[patch 01/58] USB: EHCI: add software retry for transaction errors

[patch 01/58] USB: EHCI: add software retry for transaction errors

[Greg KH]

[-- Attachment #1: 0008-USB-EHCI-add-software-retry-for-transaction-errors.patch --]
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2.6.27-stable review patch.  If anyone has any objections, please let us know.

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From: Alan Stern <stern@rowland.harvard.edu>

upstream commit: a2c2706e1043c17139c2dafd171c4a5cf008ef7e

This patch (as1204) adds a software retry mechanism to ehci-hcd.  It
gets invoked when the driver encounters transaction errors on an
asynchronous endpoint.  On many systems, hardware deficiencies cause
such errors to occur if one device is unplugged while the host is
communicating with another device.  With the patch, the failed
transactions are retried and generally succeed the second or third
time through.

This is based on code originally written by Koichiro Saito.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Tested by: Koichiro Saito <Saito.Koichiro@adniss.jp>
CC: David Brownell <david-b@pacbell.net>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
---
 drivers/usb/host/ehci-q.c |   32 ++++++++++++++++++++++++++++++++
 drivers/usb/host/ehci.h   |    3 +++
 2 files changed, 35 insertions(+)

--- a/drivers/usb/host/ehci.h
+++ b/drivers/usb/host/ehci.h
@@ -500,6 +500,9 @@ struct ehci_qh {
 #define	QH_STATE_UNLINK_WAIT	4		/* LINKED and on reclaim q */
 #define	QH_STATE_COMPLETING	5		/* don't touch token.HALT */
 
+	u8			xacterrs;	/* XactErr retry counter */
+#define	QH_XACTERR_MAX		32		/* XactErr retry limit */
+
 	/* periodic schedule info */
 	u8			usecs;		/* intr bandwidth */
 	u8			gap_uf;		/* uframes split/csplit gap */
--- a/drivers/usb/host/ehci-q.c
+++ b/drivers/usb/host/ehci-q.c
@@ -333,12 +333,40 @@ qh_completions (struct ehci_hcd *ehci, s
 		token = hc32_to_cpu(ehci, qtd->hw_token);
 
 		/* always clean up qtds the hc de-activated */
+ retry_xacterr:
 		if ((token & QTD_STS_ACTIVE) == 0) {
 
 			/* on STALL, error, and short reads this urb must
 			 * complete and all its qtds must be recycled.
 			 */
 			if ((token & QTD_STS_HALT) != 0) {
+
+				/* retry transaction errors until we
+				 * reach the software xacterr limit
+				 */
+				if ((token & QTD_STS_XACT) &&
+						QTD_CERR(token) == 0 &&
+						--qh->xacterrs > 0 &&
+						!urb->unlinked) {
+					ehci_dbg(ehci,
+	"detected XactErr len %d/%d retry %d\n",
+	qtd->length - QTD_LENGTH(token), qtd->length,
+	QH_XACTERR_MAX - qh->xacterrs);
+
+					/* reset the token in the qtd and the
+					 * qh overlay (which still contains
+					 * the qtd) so that we pick up from
+					 * where we left off
+					 */
+					token &= ~QTD_STS_HALT;
+					token |= QTD_STS_ACTIVE |
+							(EHCI_TUNE_CERR << 10);
+					qtd->hw_token = cpu_to_hc32(ehci,
+							token);
+					wmb();
+					qh->hw_token = cpu_to_hc32(ehci, token);
+					goto retry_xacterr;
+				}
 				stopped = 1;
 
 			/* magic dummy for some short reads; qh won't advance.
@@ -421,6 +449,9 @@ halt:
 		/* remove qtd; it's recycled after possible urb completion */
 		list_del (&qtd->qtd_list);
 		last = qtd;
+
+		/* reinit the xacterr counter for the next qtd */
+		qh->xacterrs = QH_XACTERR_MAX;
 	}
 
 	/* last urb's completion might still need calling */
@@ -862,6 +893,7 @@ static void qh_link_async (struct ehci_h
 	head->qh_next.qh = qh;
 	head->hw_next = dma;
 
+	qh->xacterrs = QH_XACTERR_MAX;
 	qh->qh_state = QH_STATE_LINKED;
 	/* qtd completions reported later by interrupt */
 }

[patch 02/58] USB: fix USB_STORAGE_CYPRESS_ATACB

[Greg KH]

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2.6.27-stable review patch.  If anyone has any objections, please let us know.

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From: Boaz Harrosh <bharrosh@panasas.com>

upstream commit: 1f4159c1620f74377e26d8a569d10ca5907ef475

commit 64a87b24: [SCSI] Let scsi_cmnd->cmnd use request->cmd buffer
changed the scsi_eh_prep_cmnd logic by making it clear
the ->cmnd buffer. But the sat to cypress atacb translation supposed
the ->cmnd buffer wasn't modified.

This patch makes it set the ->cmnd buffer after scsi_eh_prep_cmnd call.
The problem and a fix was reported by Matthieu CASTET <castet.matthieu@free.fr>

It also removes all the hackery fiddling of scsi_cmnd and scsi_eh_save by
requesting from scsi_eh_prep_cmnd to prepare a read into ->sense_buffer,
which is much more suitable a buffer for HW transfers, then after the command
execution the regs read is copied into regs buffer before actual preparation
of sense_buffer.

Also fix an alien comment character to my utf-8 editor.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Matthieu CASTET <castet.matthieu@free.fr>
Cc: stable <stable@kernel.org>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Matthew Dharm <mdharm-kernel@one-eyed-alien.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
---
 drivers/usb/storage/cypress_atacb.c |   15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

--- a/drivers/usb/storage/cypress_atacb.c
+++ b/drivers/usb/storage/cypress_atacb.c
@@ -133,19 +133,18 @@ void cypress_atacb_passthrough(struct sc
 
 		/* build the command for
 		 * reading the ATA registers */
-		scsi_eh_prep_cmnd(srb, &ses, NULL, 0, 0);
-		srb->sdb.length = sizeof(regs);
-		sg_init_one(&ses.sense_sgl, regs, srb->sdb.length);
-		srb->sdb.table.sgl = &ses.sense_sgl;
-		srb->sc_data_direction = DMA_FROM_DEVICE;
-		srb->sdb.table.nents = 1;
+		scsi_eh_prep_cmnd(srb, &ses, NULL, 0, sizeof(regs));
+
 		/* we use the same command as before, but we set
 		 * the read taskfile bit, for not executing atacb command,
 		 * but reading register selected in srb->cmnd[4]
 		 */
+		srb->cmd_len = 16;
+		srb->cmnd = ses.cmnd;
 		srb->cmnd[2] = 1;
 
 		usb_stor_transparent_scsi_command(srb, us);
+		memcpy(regs, srb->sense_buffer, sizeof(regs));
 		tmp_result = srb->result;
 		scsi_eh_restore_cmnd(srb, &ses);
 		/* we fail to get registers, report invalid command */
@@ -162,8 +161,8 @@ void cypress_atacb_passthrough(struct sc
 
 		/* XXX we should generate sk, asc, ascq from status and error
 		 * regs
-		 * (see 11.1 Error translation ­ ATA device error to SCSI error map)
-		 * and ata_to_sense_error from libata.
+		 * (see 11.1 Error translation ATA device error to SCSI error
+		 *  map, and ata_to_sense_error from libata.)
 		 */
 
 		/* Sense data is current and format is descriptor. */

[patch 03/58] USB: usb-storage: increase max_sectors for tape drives

[Greg KH]

[-- Attachment #1: 0010-USB-usb-storage-increase-max_sectors-for-tape-driv.patch --]
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2.6.27-stable review patch.  If anyone has any objections, please let us know.

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From: Alan Stern <stern@rowland.harvard.edu>

upstream commit: 5c16034d73da2c1b663aa25dedadbc533b3d811c

This patch (as1203) increases the max_sector limit for USB tape
drives.  By default usb-storage sets max_sectors to 240 (i.e., 120 KB)
for all devices.  But tape drives need a higher limit, since tapes can
and do have very large block sizes.  Without the ability to transfer
an entire large block in a single command, such tapes can't be used.

This fixes Bugzilla #12207.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-and-tested-by: Phil Mitchell <philipm@sybase.com>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
---
 drivers/usb/storage/scsiglue.c |    6 ++++++
 1 file changed, 6 insertions(+)

--- a/drivers/usb/storage/scsiglue.c
+++ b/drivers/usb/storage/scsiglue.c
@@ -135,6 +135,12 @@ static int slave_configure(struct scsi_d
 		if (sdev->request_queue->max_sectors > max_sectors)
 			blk_queue_max_sectors(sdev->request_queue,
 					      max_sectors);
+	} else if (sdev->type == TYPE_TAPE) {
+		/* Tapes need much higher max_sector limits, so just
+		 * raise it to the maximum possible (4 GB / 512) and
+		 * let the queue segment size sort out the real limit.
+		 */
+		blk_queue_max_sectors(sdev->request_queue, 0x7FFFFF);
 	}
 
 	/* We can't put these settings in slave_alloc() because that gets

[patch 04/58] USB: gadget: fix rndis regression

[Greg KH]

[-- Attachment #1: 0011-USB-gadget-fix-rndis-regression.patch --]
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2.6.27-stable review patch.  If anyone has any objections, please let us know.

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From: David Brownell <dbrownell@users.sourceforge.net>

upstream commit: 090b90118207e786d2990310d063fda5d52cce6e

Restore some code that was wrongly dropped from the RNDIS
driver, and caused interop problems observed with OpenMoko.

The issue is with hardware which needs help conforming to part
of the USB 2.0 spec (section 8.5.3.2); some can automagically
send a ZLP in response to an unexpected IN, but not all chips
will do that.  We don't need to check the packet length ourselves
the way earlier code did, since the UDC must already check it.
But we do need to tell the UDC when it must force a short packet
termination of the data stage.

(Based on a patch from Aric D. Blumer <aric at sdgsystems.com>)

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
---
 drivers/usb/gadget/f_rndis.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/gadget/f_rndis.c
+++ b/drivers/usb/gadget/f_rndis.c
@@ -437,7 +437,7 @@ invalid:
 		DBG(cdev, "rndis req%02x.%02x v%04x i%04x l%d\n",
 			ctrl->bRequestType, ctrl->bRequest,
 			w_value, w_index, w_length);
-		req->zero = 0;
+		req->zero = (value < w_length);
 		req->length = value;
 		value = usb_ep_queue(cdev->gadget->ep0, req, GFP_ATOMIC);
 		if (value < 0)

[patch 05/58] cifs: fix buffer format byte on NT Rename/hardlink

[Greg KH]

[-- Attachment #1: 0016-cifs-fix-buffer-format-byte-on-NT-Rename-hardlink.patch --]
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2.6.27-stable review patch.  If anyone has any objections, please let us know.

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From: Jeff Layton <jlayton@tupile.poochiereds.net>

upstream commit: fcc7c09d94be7b75c9ea2beb22d0fae191c6b4b9

Discovered at Connnectathon 2009...

The buffer format byte and the pad are transposed in NT_RENAME calls
(which are used to set hardlinks). Most servers seem to ignore this
fact, but NetApp filers throw back an error due to this problem. This
patch fixes it.

CC: Stable <stable@kernel.org>
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 fs/cifs/cifssmb.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -2348,8 +2348,10 @@ winCreateHardLinkRetry:
 				     PATH_MAX, nls_codepage, remap);
 		name_len++;	/* trailing null */
 		name_len *= 2;
-		pSMB->OldFileName[name_len] = 0;	/* pad */
-		pSMB->OldFileName[name_len + 1] = 0x04;
+
+		/* protocol specifies ASCII buffer format (0x04) for unicode */
+		pSMB->OldFileName[name_len] = 0x04;
+		pSMB->OldFileName[name_len + 1] = 0x00; /* pad */
 		name_len2 =
 		    cifsConvertToUCS((__le16 *)&pSMB->OldFileName[name_len + 2],
 				     toName, PATH_MAX, nls_codepage, remap);

[patch 06/58] b43: fix b43_plcp_get_bitrate_idx_ofdm return type

[Greg KH]

[-- Attachment #1: 0019-b43-fix-b43_plcp_get_bitrate_idx_ofdm-return-type.patch --]
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2.6.27-stable review patch.  If anyone has any objections, please let us know.

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From: Lorenzo Nava <navalorenx@gmail.com>

upstream commit: a3c0b87c4f21911fb7185902dd13f0e3cd7f33f7

This patch fixes the return type of b43_plcp_get_bitrate_idx_ofdm. If
the plcp contains an error, the function return value is 255 instead
of -1, and the packet was not dropped. This causes a warning in
__ieee80211_rx function because rate idx is out of range.

Cc: stable@kernel.org
Signed-off-by: Lorenzo Nava <navalorenx@gmail.com>
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/net/wireless/b43/xmit.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/wireless/b43/xmit.c
+++ b/drivers/net/wireless/b43/xmit.c
@@ -51,7 +51,7 @@ static int b43_plcp_get_bitrate_idx_cck(
 }
 
 /* Extract the bitrate index out of an OFDM PLCP header. */
-static u8 b43_plcp_get_bitrate_idx_ofdm(struct b43_plcp_hdr6 *plcp, bool aphy)
+static int b43_plcp_get_bitrate_idx_ofdm(struct b43_plcp_hdr6 *plcp, bool aphy)
 {
 	int base = aphy ? 0 : 4;
 

[patch 07/58] CIFS: Fix memory overwrite when saving nativeFileSystem field during mount

[Greg KH]

[-- Attachment #1: 0022-CIFS-Fix-memory-overwrite-when-saving-nativeFileSys.patch --]
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2.6.27-stable review patch.  If anyone has any objections, please let us know.

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From: Steve French <sfrench@us.ibm.com>

upstream commit: b363b3304bcf68c4541683b2eff70b29f0446a5b

CIFS can allocate a few bytes to little for the nativeFileSystem field
during tree connect response processing during mount.  This can result
in a "Redzone overwritten" message to be logged.

Signed-off-by: Sridhar Vinay <vinaysridhar@in.ibm.com>
Acked-by: Shirish Pargaonkar <shirishp@us.ibm.com>
CC: Stable <stable@kernel.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>
[chrisw: minor backport to CHANGES file]
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 fs/cifs/CHANGES   |    3 +++
 fs/cifs/connect.c |    2 +-
 2 files changed, 4 insertions(+), 1 deletion(-)

--- a/fs/cifs/CHANGES
+++ b/fs/cifs/CHANGES
@@ -1,4 +1,7 @@
 Fix oops in cifs_dfs_ref.c when prefixpath is not reachable when using DFS.
+Fix "redzone overwritten" bug in cifs_put_tcon (CIFSTcon may allocate too
+little memory for the "nativeFileSystem" field returned by the server
+during mount).
 
 Version 1.54
 ------------
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -3549,7 +3549,7 @@ CIFSTCon(unsigned int xid, struct cifsSe
 			    BCC(smb_buffer_response)) {
 				kfree(tcon->nativeFileSystem);
 				tcon->nativeFileSystem =
-				    kzalloc(length + 2, GFP_KERNEL);
+				    kzalloc(2*(length + 1), GFP_KERNEL);
 				if (tcon->nativeFileSystem)
 					cifs_strfromUCS_le(
 						tcon->nativeFileSystem,

[patch 08/58] Add a missing unlock_kernel() in raw_open()

[Greg KH]

[-- Attachment #1: 0032-Add-a-missing-unlock_kernel-in-raw_open.patch --]
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2.6.27-stable review patch.  If anyone has any objections, please let us know.

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From: Dan Carpenter <error27@gmail.com>

upstream commit: 996ff68d8b358885c1de82a45517c607999947c7

Cc: stable@kernel.org
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/char/raw.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/char/raw.c
+++ b/drivers/char/raw.c
@@ -90,6 +90,7 @@ out1:
 	blkdev_put(bdev);
 out:
 	mutex_unlock(&raw_mutex);
+	unlock_kernel();
 	return err;
 }
 

[patch 09/58] x86, PAT, PCI: Change vma prot in pci_mmap to reflect inherited prot

[Greg KH]

[-- Attachment #1: 0033-x86-PAT-PCI-Change-vma-prot-in-pci_mmap-to-reflec.patch --]
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2.6.27-stable review patch.  If anyone has any objections, please let us know.

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From: Pallipadi, Venkatesh <venkatesh.pallipadi@intel.com>

upstream commit: 9cdec049389ce2c324fd1ec508a71528a27d4a07

While looking at the issue in the thread:

  http://marc.info/?l=dri-devel&m=123606627824556&w=2

noticed a bug in pci PAT code and memory type setting.

PCI mmap code did not set the proper protection in vma, when it
inherited protection in reserve_memtype. This bug only affects
the case where there exists a WC mapping before X does an mmap
with /proc or /sys pci interface. This will cause X userlevel
mmap from /proc or /sysfs to fail on fork.

Reported-by: Kevin Winchester <kjwinchester@gmail.com>
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Cc: Dave Airlie <airlied@redhat.com>
Cc: <stable@kernel.org>
LKML-Reference: <20090323190720.GA16831@linux-os.sc.intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 arch/x86/pci/i386.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/arch/x86/pci/i386.c
+++ b/arch/x86/pci/i386.c
@@ -326,6 +326,9 @@ int pci_mmap_page_range(struct pci_dev *
 			return -EINVAL;
 		}
 		flags = new_flags;
+		vma->vm_page_prot = __pgprot(
+			(pgprot_val(vma->vm_page_prot) & ~_PAGE_CACHE_MASK) |
+			flags);
 	}
 
 	if (((vma->vm_pgoff < max_low_pfn_mapped) ||

[patch 10/58] x86: mtrr: dont modify RdDram/WrDram bits of fixed MTRRs

[Greg KH]

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2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Andreas Herrmann <andreas.herrmann3@amd.com>

upstream commit: 3ff42da5048649503e343a32be37b14a6a4e8aaf

Impact: bug fix + BIOS workaround

BIOS is expected to clear the SYSCFG[MtrrFixDramModEn] on AMD CPUs
after fixed MTRRs are configured.

Some BIOSes do not clear SYSCFG[MtrrFixDramModEn] on BP (and on APs).

This can lead to obfuscation in Linux when this bit is not cleared on
BP but cleared on APs. A consequence of this is that the saved
fixed-MTRR state (from BP) differs from the fixed-MTRRs of APs --
because RdDram/WrDram bits are read as zero when
SYSCFG[MtrrFixDramModEn] is cleared -- and Linux tries to sync
fixed-MTRR state from BP to AP. This implies that Linux sets
SYSCFG[MtrrFixDramEn] and activates those bits.

More important is that (some) systems change these bits in SMM when
ACPI is enabled. Hence it is racy if Linux modifies RdMem/WrMem bits,
too.

(1) The patch modifies an old fix from Bernhard Kaindl to get
    suspend/resume working on some Acer Laptops. Bernhard's patch
    tried to sync RdMem/WrMem bits of fixed MTRR registers and that
    helped on those old Laptops. (Don't ask me why -- can't test it
    myself). But this old problem was not the motivation for the
    patch. (See http://lkml.org/lkml/2007/4/3/110)

(2) The more important effect is to fix issues on some more current systems.

    On those systems Linux panics or just freezes, see

    http://bugzilla.kernel.org/show_bug.cgi?id=11541
    (and also duplicates of this bug:
    http://bugzilla.kernel.org/show_bug.cgi?id=11737
    http://bugzilla.kernel.org/show_bug.cgi?id=11714)

    The affected systems boot only using acpi=ht, acpi=off or
    when the kernel is built with CONFIG_MTRR=n.

    The acpi options prevent full enablement of ACPI.  Obviously when
    ACPI is enabled the BIOS/SMM modfies RdMem/WrMem bits.  When
    CONFIG_MTRR=y Linux also accesses and modifies those bits when it
    needs to sync fixed-MTRRs across cores (Bernhard's fix, see (1)).
    How do you synchronize that? You can't. As a consequence Linux
    shouldn't touch those bits at all (Rationale are AMD's BKDGs which
    recommend to clear the bit that makes RdMem/WrMem accessible).
    This is the purpose of this patch. And (so far) this suffices to
    fix (1) and (2).

I suggest not to touch RdDram/WrDram bits of fixed-MTRRs and
SYSCFG[MtrrFixDramEn] and to clear SYSCFG[MtrrFixDramModEn] as
suggested by AMD K8, and AMD family 10h/11h BKDGs.
BIOS is expected to do this anyway. This should avoid that
Linux and SMM tread on each other's toes ...

Signed-off-by: Andreas Herrmann <andreas.herrmann3@amd.com>
Cc: trenn@suse.de
Cc: Yinghai Lu <yinghai@kernel.org>
LKML-Reference: <20090312163937.GH20716@alberich.amd.com>
Cc: <stable@kernel.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 arch/x86/kernel/cpu/mtrr/generic.c |   51 +++++++++++++++++++++----------------
 1 file changed, 30 insertions(+), 21 deletions(-)

--- a/arch/x86/kernel/cpu/mtrr/generic.c
+++ b/arch/x86/kernel/cpu/mtrr/generic.c
@@ -45,6 +45,32 @@ u64 mtrr_tom2;
 static int mtrr_show;
 module_param_named(show, mtrr_show, bool, 0);
 
+/**
+ * BIOS is expected to clear MtrrFixDramModEn bit, see for example
+ * "BIOS and Kernel Developer's Guide for the AMD Athlon 64 and AMD
+ * Opteron Processors" (26094 Rev. 3.30 February 2006), section
+ * "13.2.1.2 SYSCFG Register": "The MtrrFixDramModEn bit should be set
+ * to 1 during BIOS initalization of the fixed MTRRs, then cleared to
+ * 0 for operation."
+ */
+static inline void k8_check_syscfg_dram_mod_en(void)
+{
+	u32 lo, hi;
+
+	if (!((boot_cpu_data.x86_vendor == X86_VENDOR_AMD) &&
+	      (boot_cpu_data.x86 >= 0x0f)))
+		return;
+
+	rdmsr(MSR_K8_SYSCFG, lo, hi);
+	if (lo & K8_MTRRFIXRANGE_DRAM_MODIFY) {
+		printk(KERN_ERR "MTRR: CPU %u: SYSCFG[MtrrFixDramModEn]"
+		       " not cleared by BIOS, clearing this bit\n",
+		       smp_processor_id());
+		lo &= ~K8_MTRRFIXRANGE_DRAM_MODIFY;
+		mtrr_wrmsr(MSR_K8_SYSCFG, lo, hi);
+	}
+}
+
 /*
  * Returns the effective MTRR type for the region
  * Error returns:
@@ -178,6 +204,8 @@ get_fixed_ranges(mtrr_type * frs)
 	unsigned int *p = (unsigned int *) frs;
 	int i;
 
+	k8_check_syscfg_dram_mod_en();
+
 	rdmsr(MTRRfix64K_00000_MSR, p[0], p[1]);
 
 	for (i = 0; i < 2; i++)
@@ -312,27 +340,10 @@ void mtrr_wrmsr(unsigned msr, unsigned a
 }
 
 /**
- * Enable and allow read/write of extended fixed-range MTRR bits on K8 CPUs
- * see AMD publication no. 24593, chapter 3.2.1 for more information
- */
-static inline void k8_enable_fixed_iorrs(void)
-{
-	unsigned lo, hi;
-
-	rdmsr(MSR_K8_SYSCFG, lo, hi);
-	mtrr_wrmsr(MSR_K8_SYSCFG, lo
-				| K8_MTRRFIXRANGE_DRAM_ENABLE
-				| K8_MTRRFIXRANGE_DRAM_MODIFY, hi);
-}
-
-/**
  * set_fixed_range - checks & updates a fixed-range MTRR if it differs from the value it should have
  * @msr: MSR address of the MTTR which should be checked and updated
  * @changed: pointer which indicates whether the MTRR needed to be changed
  * @msrwords: pointer to the MSR values which the MSR should have
- *
- * If K8 extentions are wanted, update the K8 SYSCFG MSR also.
- * See AMD publication no. 24593, chapter 7.8.1, page 233 for more information.
  */
 static void set_fixed_range(int msr, bool *changed, unsigned int *msrwords)
 {
@@ -341,10 +352,6 @@ static void set_fixed_range(int msr, boo
 	rdmsr(msr, lo, hi);
 
 	if (lo != msrwords[0] || hi != msrwords[1]) {
-		if (boot_cpu_data.x86_vendor == X86_VENDOR_AMD &&
-		    (boot_cpu_data.x86 >= 0x0f && boot_cpu_data.x86 <= 0x11) &&
-		    ((msrwords[0] | msrwords[1]) & K8_MTRR_RDMEM_WRMEM_MASK))
-			k8_enable_fixed_iorrs();
 		mtrr_wrmsr(msr, msrwords[0], msrwords[1]);
 		*changed = true;
 	}
@@ -428,6 +435,8 @@ static int set_fixed_ranges(mtrr_type * 
 	bool changed = false;
 	int block=-1, range;
 
+	k8_check_syscfg_dram_mod_en();
+
 	while (fixed_range_blocks[++block].ranges)
 	    for (range=0; range < fixed_range_blocks[block].ranges; range++)
 		set_fixed_range(fixed_range_blocks[block].base_msr + range,

[patch 11/58] bas_gigaset: correctly allocate USB interrupt transfer buffer

[Greg KH]

[-- Attachment #1: bas_gigaset-correctly-allocate-usb-interrupt-transfer-buffer.patch --]
[-- Type: text/plain, Size: 2717 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Tilman Schmidt <tilman@imap.cc>

[ Upstream commit 170ebf85160dd128e1c4206cc197cce7d1424705 ]

Every USB transfer buffer has to be allocated individually by kmalloc.

Impact: bugfix, no functional change

Signed-off-by: Tilman Schmidt <tilman@imap.cc>
Tested-by: Kolja Waschk <kawk@users.sourceforge.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/isdn/gigaset/bas-gigaset.c |   16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

--- a/drivers/isdn/gigaset/bas-gigaset.c
+++ b/drivers/isdn/gigaset/bas-gigaset.c
@@ -46,6 +46,9 @@ MODULE_PARM_DESC(cidmode, "Call-ID mode"
 /* length limit according to Siemens 3070usb-protokoll.doc ch. 2.1 */
 #define IF_WRITEBUF 264
 
+/* interrupt pipe message size according to ibid. ch. 2.2 */
+#define IP_MSGSIZE 3
+
 /* Values for the Gigaset 307x */
 #define USB_GIGA_VENDOR_ID      0x0681
 #define USB_3070_PRODUCT_ID     0x0001
@@ -110,7 +113,7 @@ struct bas_cardstate {
 	unsigned char		*rcvbuf;	/* AT reply receive buffer */
 
 	struct urb		*urb_int_in;	/* URB for interrupt pipe */
-	unsigned char		int_in_buf[3];
+	unsigned char		*int_in_buf;
 
 	spinlock_t		lock;		/* locks all following */
 	int			basstate;	/* bitmap (BS_*) */
@@ -657,7 +660,7 @@ static void read_int_callback(struct urb
 	}
 
 	/* drop incomplete packets even if the missing bytes wouldn't matter */
-	if (unlikely(urb->actual_length < 3)) {
+	if (unlikely(urb->actual_length < IP_MSGSIZE)) {
 		dev_warn(cs->dev, "incomplete interrupt packet (%d bytes)\n",
 			 urb->actual_length);
 		goto resubmit;
@@ -2127,6 +2130,7 @@ static void gigaset_reinitbcshw(struct b
 static void gigaset_freecshw(struct cardstate *cs)
 {
 	/* timers, URBs and rcvbuf are disposed of in disconnect */
+	kfree(cs->hw.bas->int_in_buf);
 	kfree(cs->hw.bas);
 	cs->hw.bas = NULL;
 }
@@ -2232,6 +2236,12 @@ static int gigaset_probe(struct usb_inte
 		}
 		hostif = interface->cur_altsetting;
 	}
+	ucs->int_in_buf = kmalloc(IP_MSGSIZE, GFP_KERNEL);
+	if (!ucs->int_in_buf) {
+		kfree(ucs);
+		pr_err("out of memory\n");
+		return 0;
+	}
 
 	/* Reject application specific interfaces
 	 */
@@ -2290,7 +2300,7 @@ static int gigaset_probe(struct usb_inte
 	usb_fill_int_urb(ucs->urb_int_in, udev,
 			 usb_rcvintpipe(udev,
 					(endpoint->bEndpointAddress) & 0x0f),
-			 ucs->int_in_buf, 3, read_int_callback, cs,
+			 ucs->int_in_buf, IP_MSGSIZE, read_int_callback, cs,
 			 endpoint->bInterval);
 	if ((rc = usb_submit_urb(ucs->urb_int_in, GFP_KERNEL)) != 0) {
 		dev_err(cs->dev, "could not submit interrupt URB: %s\n",

[patch 12/58] bonding: Fix updating of speed/duplex changes

[Greg KH]

[-- Attachment #1: bonding-fix-updating-of-speed-duplex-changes.patch --]
[-- Type: text/plain, Size: 2406 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Jay Vosburgh <fubar@us.ibm.com>

[ Upstream commit 17d04500e2528217de5fe967599f98ee84348a9c ]

	This patch corrects an omission from the following commit:

commit f0c76d61779b153dbfb955db3f144c62d02173c2
Author: Jay Vosburgh <fubar@us.ibm.com>
Date:   Wed Jul 2 18:21:58 2008 -0700

    bonding: refactor mii monitor

	The un-refactored code checked the link speed and duplex of
every slave on every pass; the refactored code did not do so.

	The 802.3ad and balance-alb/tlb modes utilize the speed and
duplex information, and require it to be kept up to date.  This patch
adds a notifier check to perform the appropriate updating when the slave
device speed changes.

Signed-off-by: Jay Vosburgh <fubar@us.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/net/bonding/bond_main.c |   25 ++++++++++++++++++++-----
 drivers/net/bonding/bonding.h   |    6 ++++++
 2 files changed, 26 insertions(+), 5 deletions(-)

--- a/drivers/net/bonding/bonding.h
+++ b/drivers/net/bonding/bonding.h
@@ -248,6 +248,12 @@ static inline struct bonding *bond_get_b
 	return (struct bonding *)slave->dev->master->priv;
 }
 
+static inline bool bond_is_lb(const struct bonding *bond)
+{
+        return bond->params.mode == BOND_MODE_TLB
+                || bond->params.mode == BOND_MODE_ALB;
+}
+
 #define BOND_FOM_NONE			0
 #define BOND_FOM_ACTIVE			1
 #define BOND_FOM_FOLLOW			2
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -3516,11 +3516,26 @@ static int bond_slave_netdev_event(unsig
 		}
 		break;
 	case NETDEV_CHANGE:
-		/*
-		 * TODO: is this what we get if somebody
-		 * sets up a hierarchical bond, then rmmod's
-		 * one of the slave bonding devices?
-		 */
+		if (bond->params.mode == BOND_MODE_8023AD || bond_is_lb(bond)) {
+			struct slave *slave;
+
+			slave = bond_get_slave_by_dev(bond, slave_dev);
+			if (slave) {
+				u16 old_speed = slave->speed;
+				u16 old_duplex = slave->duplex;
+
+				bond_update_speed_duplex(slave);
+
+				if (bond_is_lb(bond))
+					break;
+
+				if (old_speed != slave->speed)
+					bond_3ad_adapter_speed_changed(slave);
+				if (old_duplex != slave->duplex)
+					bond_3ad_adapter_duplex_changed(slave);
+			}
+		}
+
 		break;
 	case NETDEV_DOWN:
 		/*

[patch 13/58] bridge: bad error handling when adding invalid ether address

[Greg KH]

[-- Attachment #1: bridge-bad-error-handling-when-adding-invalid-ether-address.patch --]
[-- Type: text/plain, Size: 1038 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Stephen Hemminger <shemminger@vyatta.com>

[ Upstream commit cda6d377ec6b2ee2e58d563d0bd7eb313e0165df ]

This fixes an crash when empty bond device is added to a bridge.
If an interface with invalid ethernet address (all zero) is added
to a bridge, then bridge code detects it when setting up the forward
databas entry. But the error unwind is broken, the bridge port object
can get freed twice: once when ref count went to zeo, and once by kfree.
Since object is never really accessible, just free it.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 net/bridge/br_if.c |    1 -
 1 file changed, 1 deletion(-)

--- a/net/bridge/br_if.c
+++ b/net/bridge/br_if.c
@@ -419,7 +419,6 @@ err2:
 err1:
 	kobject_del(&p->kobj);
 err0:
-	kobject_put(&p->kobj);
 	dev_set_promiscuity(dev, -1);
 put_back:
 	dev_put(dev);

[patch 14/58] ipv6: dont use tw net when accounting for recycled tw

[Greg KH]

[-- Attachment #1: ipv6-don-t-use-tw-net-when-accounting-for-recycled-tw.patch --]
[-- Type: text/plain, Size: 1250 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Pavel Emelyanov <xemul@openvz.org>

[ Upstream commit 3f53a38131a4e7a053c0aa060aba0411242fb6b9 ]

We already have a valid net in that place, but this is not just a
cleanup - the tw pointer can be NULL there sometimes, thus causing
an oops in NET_NS=y case.

The same place in ipv4 code already works correctly using existing
net, rather than tw's one.

The bug exists since 2.6.27.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 net/ipv6/inet6_hashtables.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/net/ipv6/inet6_hashtables.c
+++ b/net/ipv6/inet6_hashtables.c
@@ -210,11 +210,11 @@ unique:
 
 	if (twp != NULL) {
 		*twp = tw;
-		NET_INC_STATS_BH(twsk_net(tw), LINUX_MIB_TIMEWAITRECYCLED);
+		NET_INC_STATS_BH(net, LINUX_MIB_TIMEWAITRECYCLED);
 	} else if (tw != NULL) {
 		/* Silly. Should hash-dance instead... */
 		inet_twsk_deschedule(tw, death_row);
-		NET_INC_STATS_BH(twsk_net(tw), LINUX_MIB_TIMEWAITRECYCLED);
+		NET_INC_STATS_BH(net, LINUX_MIB_TIMEWAITRECYCLED);
 
 		inet_twsk_put(tw);
 	}

[patch 15/58] ipv6: Plug sk_buff leak in ipv6_rcv (net/ipv6/ip6_input.c)

[Greg KH]

[-- Attachment #1: ipv6-plug-sk_buff-leak-in-ipv6_rcv.patch --]
[-- Type: text/plain, Size: 1674 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Jesper Nilsson <jesper.nilsson@axis.com>

[ Upstream commit 71f6f6dfdf7c7a67462386d9ea05c1095a89c555 ]

Commit 778d80be52699596bf70e0eb0761cf5e1e46088d
(ipv6: Add disable_ipv6 sysctl to disable IPv6 operaion on specific interface)
seems to have introduced a leak of sk_buff's for ipv6 traffic,
at least in some configurations where idev is NULL, or when ipv6
is disabled via sysctl.

The problem is that if the first condition of the if-statement
returns non-NULL, it returns an skb with only one reference,
and when the other conditions apply, execution jumps to the "out"
label, which does not call kfree_skb for it.

To plug this leak, change to use the "drop" label instead.
(this relies on it being ok to call kfree_skb on NULL)
This also allows us to avoid calling rcu_read_unlock here,
and removes the only user of the "out" label.

Signed-off-by: Jesper Nilsson <jesper.nilsson@axis.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 net/ipv6/ip6_input.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- a/net/ipv6/ip6_input.c
+++ b/net/ipv6/ip6_input.c
@@ -74,8 +74,7 @@ int ipv6_rcv(struct sk_buff *skb, struct
 	if ((skb = skb_share_check(skb, GFP_ATOMIC)) == NULL ||
 	    !idev || unlikely(idev->cnf.disable_ipv6)) {
 		IP6_INC_STATS_BH(idev, IPSTATS_MIB_INDISCARDS);
-		rcu_read_unlock();
-		goto out;
+		goto drop;
 	}
 
 	memset(IP6CB(skb), 0, sizeof(struct inet6_skb_parm));
@@ -145,7 +144,6 @@ err:
 drop:
 	rcu_read_unlock();
 	kfree_skb(skb);
-out:
 	return 0;
 }
 

[patch 16/58] netfilter: nf_conntrack_tcp: fix unaligned memory access in tcp_sack

[Greg KH]

[-- Attachment #1: netfilter-nf_conntrack_tcp-fix-unaligned-memory-access-in-tcp_sack.patch --]
[-- Type: text/plain, Size: 1347 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Mark H. Weaver <mhw@netris.org>

[ Upstream commit 534f81a5068799799e264fd162e9488a129f98d4 ]

This patch fixes an unaligned memory access in tcp_sack while reading
sequence numbers from TCP selective acknowledgement options.  Prior to
applying this patch, upstream linux-2.6.27.20 was occasionally
generating messages like this on my sparc64 system:

  [54678.532071] Kernel unaligned access at TPC[6b17d4] tcp_packet+0xcd4/0xd00

Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 net/netfilter/nf_conntrack_proto_tcp.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/net/netfilter/nf_conntrack_proto_tcp.c
+++ b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -15,6 +15,7 @@
 #include <linux/skbuff.h>
 #include <linux/ipv6.h>
 #include <net/ip6_checksum.h>
+#include <asm/unaligned.h>
 
 #include <net/tcp.h>
 
@@ -466,7 +467,7 @@ static void tcp_sack(const struct sk_buf
 				for (i = 0;
 				     i < (opsize - TCPOLEN_SACK_BASE);
 				     i += TCPOLEN_SACK_PERBLOCK) {
-					tmp = ntohl(*((__be32 *)(ptr+i)+1));
+					tmp = get_unaligned_be32((__be32 *)(ptr+i)+1);
 
 					if (after(tmp, *sack))
 						*sack = tmp;

[patch 17/58] net: fix sctp breakage

[Greg KH]

[-- Attachment #1: net-fix-sctp-breakage.patch --]
[-- Type: text/plain, Size: 980 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Al Viro <viro@zeniv.linux.org.uk>

[ Upstream commit cb0dc77de0d23615a845e45844a2e22fc224d7fe ]

broken by commit 5e739d1752aca4e8f3e794d431503bfca3162df4; AFAICS should
be -stable fodder as well...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Aced-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 net/sctp/endpointola.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/net/sctp/endpointola.c
+++ b/net/sctp/endpointola.c
@@ -111,7 +111,8 @@ static struct sctp_endpoint *sctp_endpoi
 		if (sctp_addip_enable) {
 			auth_chunks->chunks[0] = SCTP_CID_ASCONF;
 			auth_chunks->chunks[1] = SCTP_CID_ASCONF_ACK;
-			auth_chunks->param_hdr.length += htons(2);
+			auth_chunks->param_hdr.length =
+					htons(sizeof(sctp_paramhdr_t) + 2);
 		}
 	}
 

[patch 18/58] security/smack: fix oops when setting a size 0 SMACK64 xattr

[Greg KH]

[-- Attachment #1: 0001-security-smack-fix-oops-when-setting-a-size-0-SMACK.patch --]
[-- Type: text/plain, Size: 1333 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Etienne Basset <etienne.basset@numericable.fr>

upstream commit: 4303154e86597885bc3cbc178a48ccbc8213875f

this patch fix an oops in smack when setting a size 0 SMACK64 xattr eg
attr -S -s SMACK64  -V '' somefile
This oops because smk_import_entry treats a 0 length as SMK_MAXLEN

Signed-off-by: Etienne Basset <etienne.basset@numericable.fr>
Reviewed-by: James Morris <jmorris@namei.org>
Acked-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 security/smack/smack_lsm.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/security/smack/smack_lsm.c
+++ b/security/smack/smack_lsm.c
@@ -604,6 +604,8 @@ static int smack_inode_setxattr(struct d
 	    strcmp(name, XATTR_NAME_SMACKIPOUT) == 0) {
 		if (!capable(CAP_MAC_ADMIN))
 			rc = -EPERM;
+		if (size == 0)
+			rc = -EINVAL;
 	} else
 		rc = cap_inode_setxattr(dentry, name, value, size, flags);
 
@@ -1360,7 +1362,7 @@ static int smack_inode_setsecurity(struc
 	struct socket *sock;
 	int rc = 0;
 
-	if (value == NULL || size > SMK_LABELLEN)
+	if (value == NULL || size > SMK_LABELLEN || size == 0)
 		return -EACCES;
 
 	sp = smk_import(value, size);

[patch 19/58] x86, setup: mark %esi as clobbered in E820 BIOS call

[Greg KH]

[-- Attachment #1: 0011-x86-setup-mark-esi-as-clobbered-in-E820-BIOS-call.patch --]
[-- Type: text/plain, Size: 1613 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Michael K. Johnson <johnsonm@rpath.com>

upstream commit: 01522df346f846906eaf6ca57148641476209909

Jordan Hargrave diagnosed a BIOS clobbering %esi in the E820 call.
That particular BIOS has been fixed, but there is a possibility that
this is responsible for other occasional reports of early boot
failure, and it does not hurt to add %esi to the clobbers.

-stable candidate patch.

Cc: Justin Forbes <jmforbes@linuxtx.org>
Signed-off-by: Michael K Johnson <johnsonm@rpath.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: stable@kernel.org
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 arch/x86/boot/memory.c |    7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

--- a/arch/x86/boot/memory.c
+++ b/arch/x86/boot/memory.c
@@ -27,13 +27,14 @@ static int detect_memory_e820(void)
 	do {
 		size = sizeof(struct e820entry);
 
-		/* Important: %edx is clobbered by some BIOSes,
-		   so it must be either used for the error output
+		/* Important: %edx and %esi are clobbered by some BIOSes,
+		   so they must be either used for the error output
 		   or explicitly marked clobbered. */
 		asm("int $0x15; setc %0"
 		    : "=d" (err), "+b" (next), "=a" (id), "+c" (size),
 		      "=m" (*desc)
-		    : "D" (desc), "d" (SMAP), "a" (0xe820));
+		    : "D" (desc), "d" (SMAP), "a" (0xe820)
+		    : "esi");
 
 		/* BIOSes which terminate the chain with CF = 1 as opposed
 		   to %ebx = 0 don't always report the SMAP signature on

[patch 20/58] mm: do_xip_mapping_read: fix length calculation

[Greg KH]

[-- Attachment #1: 0031-mm-do_xip_mapping_read-fix-length-calculation.patch --]
[-- Type: text/plain, Size: 1023 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Martin Schwidefsky <schwidefsky@de.ibm.com>

upstream commit: 58984ce21d315b70df1a43644df7416ea7c9bfd8

The calculation of the value nr in do_xip_mapping_read is incorrect.  If
the copy required more than one iteration in the do while loop the copies
variable will be non-zero.  The maximum length that may be passed to the
call to copy_to_user(buf+copied, xip_mem+offset, nr) is len-copied but the
check only compares against (nr > len).

This bug is the cause for the heap corruption Carsten has been chasing
for so long:

---
 mm/filemap_xip.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/mm/filemap_xip.c
+++ b/mm/filemap_xip.c
@@ -89,8 +89,8 @@ do_xip_mapping_read(struct address_space
 			}
 		}
 		nr = nr - offset;
-		if (nr > len)
-			nr = len;
+		if (nr > len - copied)
+			nr = len - copied;
 
 		error = mapping->a_ops->get_xip_mem(mapping, index, 0,
 							&xip_mem, &xip_pfn);

[patch 21/58] vfs: skip I_CLEAR state inodes

[Greg KH]

[-- Attachment #1: 0034-vfs-skip-I_CLEAR-state-inodes.patch --]
[-- Type: text/plain, Size: 3624 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Wu Fengguang <fengguang.wu@intel.com>

upstream commit: b6fac63cc1f52ec27f29fe6c6c8494a2ffac33fd

clear_inode() will switch inode state from I_FREEING to I_CLEAR, and do so
_outside_ of inode_lock.  So any I_FREEING testing is incomplete without a
coupled testing of I_CLEAR.

So add I_CLEAR tests to drop_pagecache_sb(), generic_sync_sb_inodes() and
add_dquot_ref().

Masayoshi MIZUMA discovered the bug in drop_pagecache_sb() and Jan Kara
reminds fixing the other two cases.

Masayoshi MIZUMA has a nice panic flow:

=====================================================================
            [process A]               |        [process B]
 |                                    |
 |    prune_icache()                  | drop_pagecache()
 |      spin_lock(&inode_lock)        |   drop_pagecache_sb()
 |      inode->i_state |= I_FREEING;  |       |
 |      spin_unlock(&inode_lock)      |       V
 |          |                         |     spin_lock(&inode_lock)
 |          V                         |         |
 |      dispose_list()                |         |
 |        list_del()                  |         |
 |        clear_inode()               |         |
 |          inode->i_state = I_CLEAR  |         |
 |            |                       |         V
 |            |                       |      if (inode->i_state & (I_FREEING|I_WILL_FREE))
 |            |                       |              continue;           <==== NOT MATCH
 |            |                       |
 |            |                       | (DANGER from here on! Accessing disposing inode!)
 |            |                       |
 |            |                       |      __iget()
 |            |                       |        list_move() <===== PANIC on poisoned list !!
 V            V                       |
(time)
=====================================================================

Reported-by: Masayoshi MIZUMA <m.mizuma@jp.fujitsu.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Wu Fengguang <fengguang.wu@intel.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
[chrisw: backport to 2.6.29]
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 fs/dquot.c        |    2 +-
 fs/drop_caches.c  |    2 +-
 fs/fs-writeback.c |    3 ++-
 3 files changed, 4 insertions(+), 3 deletions(-)

--- a/fs/dquot.c
+++ b/fs/dquot.c
@@ -726,7 +726,7 @@ static void add_dquot_ref(struct super_b
 			continue;
 		if (!dqinit_needed(inode, type))
 			continue;
-		if (inode->i_state & (I_FREEING|I_WILL_FREE))
+		if (inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE))
 			continue;
 
 		__iget(inode);
--- a/fs/drop_caches.c
+++ b/fs/drop_caches.c
@@ -18,7 +18,7 @@ static void drop_pagecache_sb(struct sup
 
 	spin_lock(&inode_lock);
 	list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
-		if (inode->i_state & (I_FREEING|I_WILL_FREE))
+		if (inode->i_state & (I_FREEING|I_CLEAR|I_WILL_FREE))
 			continue;
 		if (inode->i_mapping->nrpages == 0)
 			continue;
--- a/fs/fs-writeback.c
+++ b/fs/fs-writeback.c
@@ -538,7 +538,8 @@ void generic_sync_sb_inodes(struct super
 		list_for_each_entry(inode, &sb->s_inodes, i_sb_list) {
 			struct address_space *mapping;
 
-			if (inode->i_state & (I_FREEING|I_WILL_FREE|I_NEW))
+			if (inode->i_state &
+					(I_FREEING|I_CLEAR|I_WILL_FREE|I_NEW))
 				continue;
 			mapping = inode->i_mapping;
 			if (mapping->nrpages == 0)

[patch 22/58] af_rose/x25: Sanity check the maximum user frame size

[Greg KH]

[-- Attachment #1: 0043-af_rose-x25-Sanity-check-the-maximum-user-frame-siz.patch --]
[-- Type: text/plain, Size: 1934 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Alan Cox <alan@lxorguk.ukuu.org.uk>

upstream commit: 83e0bbcbe2145f160fbaa109b0439dae7f4a38a9

CVE-2009-0795.

Otherwise we can wrap the sizes and end up sending garbage.

Closes #10423

Signed-off-by: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 net/netrom/af_netrom.c |    6 +++++-
 net/rose/af_rose.c     |    4 ++++
 net/x25/af_x25.c       |    6 ++++++
 3 files changed, 15 insertions(+), 1 deletion(-)

--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -1082,7 +1082,11 @@ static int nr_sendmsg(struct kiocb *iocb
 
 	SOCK_DEBUG(sk, "NET/ROM: sendto: Addresses built.\n");
 
-	/* Build a packet */
+	/* Build a packet - the conventional user limit is 236 bytes. We can
+	   do ludicrously large NetROM frames but must not overflow */
+	if (len > 65536)
+		return -EMSGSIZE;
+
 	SOCK_DEBUG(sk, "NET/ROM: sendto: building packet.\n");
 	size = len + NR_NETWORK_LEN + NR_TRANSPORT_LEN;
 
--- a/net/rose/af_rose.c
+++ b/net/rose/af_rose.c
@@ -1120,6 +1120,10 @@ static int rose_sendmsg(struct kiocb *io
 
 	/* Build a packet */
 	SOCK_DEBUG(sk, "ROSE: sendto: building packet.\n");
+	/* Sanity check the packet size */
+	if (len > 65535)
+		return -EMSGSIZE;
+
 	size = len + AX25_BPQ_HEADER_LEN + AX25_MAX_HEADER_LEN + ROSE_MIN_LEN;
 
 	if ((skb = sock_alloc_send_skb(sk, size, msg->msg_flags & MSG_DONTWAIT, &err)) == NULL)
--- a/net/x25/af_x25.c
+++ b/net/x25/af_x25.c
@@ -1037,6 +1037,12 @@ static int x25_sendmsg(struct kiocb *ioc
 		sx25.sx25_addr   = x25->dest_addr;
 	}
 
+	/* Sanity check the packet size */
+	if (len > 65535) {
+		rc = -EMSGSIZE;
+		goto out;
+	}
+
 	SOCK_DEBUG(sk, "x25_sendmsg: sendto: Addresses built.\n");
 
 	/* Build a packet */

[patch 23/58] net/netrom: Fix socket locking

[Greg KH]

[-- Attachment #1: 0044-net-netrom-Fix-socket-locking.patch --]
[-- Type: text/plain, Size: 1199 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Jean Delvare <jdelvare@suse.de>

upstream commit: cc29c70dd581f85ee7a3e7980fb031f90b90a2ab

Patch "af_rose/x25: Sanity check the maximum user frame size"
(commit 83e0bbcbe2145f160fbaa109b0439dae7f4a38a9) from Alan Cox got
locking wrong. If we bail out due to user frame size being too large,
we must unlock the socket beforehand.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 net/netrom/af_netrom.c |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/net/netrom/af_netrom.c
+++ b/net/netrom/af_netrom.c
@@ -1084,8 +1084,10 @@ static int nr_sendmsg(struct kiocb *iocb
 
 	/* Build a packet - the conventional user limit is 236 bytes. We can
 	   do ludicrously large NetROM frames but must not overflow */
-	if (len > 65536)
-		return -EMSGSIZE;
+	if (len > 65536) {
+		err = -EMSGSIZE;
+		goto out;
+	}
 
 	SOCK_DEBUG(sk, "NET/ROM: sendto: building packet.\n");
 	size = len + NR_NETWORK_LEN + NR_TRANSPORT_LEN;

[patch 24/58] netfilter: {ip, ip6, arp}_tables: fix incorrect loop detection

[Greg KH]

[-- Attachment #1: 0048-netfilter-ip-ip6-arp-_tables-fix-incorrect-loop.patch --]
[-- Type: text/plain, Size: 2647 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Patrick McHardy <kaber@trash.net>

upstream commit: 1f9352ae2253a97b07b34dcf16ffa3b4ca12c558

Commit e1b4b9f ([NETFILTER]: {ip,ip6,arp}_tables: fix exponential worst-case
search for loops) introduced a regression in the loop detection algorithm,
causing sporadic incorrectly detected loops.

When a chain has already been visited during the check, it is treated as
having a standard target containing a RETURN verdict directly at the
beginning in order to not check it again. The real target of the first
rule is then incorrectly treated as STANDARD target and checked not to
contain invalid verdicts.

Fix by making sure the rule does actually contain a standard target.

Based on patch by Francis Dupont <Francis_Dupont@isc.org>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 net/ipv4/netfilter/arp_tables.c |    4 +++-
 net/ipv4/netfilter/ip_tables.c  |    4 +++-
 net/ipv6/netfilter/ip6_tables.c |    4 +++-
 3 files changed, 9 insertions(+), 3 deletions(-)

--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -372,7 +372,9 @@ static int mark_source_chains(struct xt_
 			    && unconditional(&e->arp)) || visited) {
 				unsigned int oldpos, size;
 
-				if (t->verdict < -NF_MAX_VERDICT - 1) {
+				if ((strcmp(t->target.u.user.name,
+					    ARPT_STANDARD_TARGET) == 0) &&
+				    t->verdict < -NF_MAX_VERDICT - 1) {
 					duprintf("mark_source_chains: bad "
 						"negative verdict (%i)\n",
 								t->verdict);
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -502,7 +502,9 @@ mark_source_chains(struct xt_table_info 
 			    && unconditional(&e->ip)) || visited) {
 				unsigned int oldpos, size;
 
-				if (t->verdict < -NF_MAX_VERDICT - 1) {
+				if ((strcmp(t->target.u.user.name,
+			    		    IPT_STANDARD_TARGET) == 0) &&
+				    t->verdict < -NF_MAX_VERDICT - 1) {
 					duprintf("mark_source_chains: bad "
 						"negative verdict (%i)\n",
 								t->verdict);
--- a/net/ipv6/netfilter/ip6_tables.c
+++ b/net/ipv6/netfilter/ip6_tables.c
@@ -529,7 +529,9 @@ mark_source_chains(struct xt_table_info 
 			    && unconditional(&e->ipv6)) || visited) {
 				unsigned int oldpos, size;
 
-				if (t->verdict < -NF_MAX_VERDICT - 1) {
+				if ((strcmp(t->target.u.user.name,
+					    IP6T_STANDARD_TARGET) == 0) &&
+				    t->verdict < -NF_MAX_VERDICT - 1) {
 					duprintf("mark_source_chains: bad "
 						"negative verdict (%i)\n",
 								t->verdict);

[patch 25/58] splice: fix deadlock in splicing to file

[Greg KH]

[-- Attachment #1: 0049-splice-fix-deadlock-in-splicing-to-file.patch --]
[-- Type: text/plain, Size: 3970 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Miklos Szeredi <mszeredi@suse.cz>

upstream commit: 7bfac9ecf0585962fe13584f5cf526d8c8e76f17

There's a possible deadlock in generic_file_splice_write(),
splice_from_pipe() and ocfs2_file_splice_write():

 - task A calls generic_file_splice_write()
 - this calls inode_double_lock(), which locks i_mutex on both
   pipe->inode and target inode
 - ordering depends on inode pointers, can happen that pipe->inode is
   locked first
 - __splice_from_pipe() needs more data, calls pipe_wait()
 - this releases lock on pipe->inode, goes to interruptible sleep
 - task B calls generic_file_splice_write(), similarly to the first
 - this locks pipe->inode, then tries to lock inode, but that is
   already held by task A
 - task A is interrupted, it tries to lock pipe->inode, but fails, as
   it is already held by task B
 - ABBA deadlock

Fix this by explicitly ordering locks: the outer lock must be on
target inode and the inner lock (which is later unlocked and relocked)
must be on pipe->inode.  This is OK, pipe inodes and target inodes
form two nonoverlapping sets, generic_file_splice_write() and friends
are not called with a target which is a pipe.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Acked-by: Mark Fasheh <mfasheh@suse.com>
Acked-by: Jens Axboe <jens.axboe@oracle.com>
Cc: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 fs/ocfs2/file.c |    8 ++++++--
 fs/splice.c     |   25 ++++++++++++++++++++-----
 2 files changed, 26 insertions(+), 7 deletions(-)

--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -2089,7 +2089,7 @@ static ssize_t ocfs2_file_splice_write(s
 		   out->f_path.dentry->d_name.len,
 		   out->f_path.dentry->d_name.name);
 
-	inode_double_lock(inode, pipe->inode);
+	mutex_lock_nested(&inode->i_mutex, I_MUTEX_PARENT);
 
 	ret = ocfs2_rw_lock(inode, 1);
 	if (ret < 0) {
@@ -2104,12 +2104,16 @@ static ssize_t ocfs2_file_splice_write(s
 		goto out_unlock;
 	}
 
+	if (pipe->inode)
+		mutex_lock_nested(&pipe->inode->i_mutex, I_MUTEX_CHILD);
 	ret = generic_file_splice_write_nolock(pipe, out, ppos, len, flags);
+	if (pipe->inode)
+		mutex_unlock(&pipe->inode->i_mutex);
 
 out_unlock:
 	ocfs2_rw_unlock(inode, 1);
 out:
-	inode_double_unlock(inode, pipe->inode);
+	mutex_unlock(&inode->i_mutex);
 
 	mlog_exit(ret);
 	return ret;
--- a/fs/splice.c
+++ b/fs/splice.c
@@ -735,10 +735,19 @@ ssize_t splice_from_pipe(struct pipe_ino
 	 * ->commit_write. Most of the time, these expect i_mutex to
 	 * be held. Since this may result in an ABBA deadlock with
 	 * pipe->inode, we have to order lock acquiry here.
+	 *
+	 * Outer lock must be inode->i_mutex, as pipe_wait() will
+	 * release and reacquire pipe->inode->i_mutex, AND inode must
+	 * never be a pipe.
 	 */
-	inode_double_lock(inode, pipe->inode);
+	WARN_ON(S_ISFIFO(inode->i_mode));
+	mutex_lock_nested(&inode->i_mutex, I_MUTEX_PARENT);
+	if (pipe->inode)
+		mutex_lock_nested(&pipe->inode->i_mutex, I_MUTEX_CHILD);
 	ret = __splice_from_pipe(pipe, &sd, actor);
-	inode_double_unlock(inode, pipe->inode);
+	if (pipe->inode)
+		mutex_unlock(&pipe->inode->i_mutex);
+	mutex_unlock(&inode->i_mutex);
 
 	return ret;
 }
@@ -829,11 +838,17 @@ generic_file_splice_write(struct pipe_in
 	};
 	ssize_t ret;
 
-	inode_double_lock(inode, pipe->inode);
+	WARN_ON(S_ISFIFO(inode->i_mode));
+	mutex_lock_nested(&inode->i_mutex, I_MUTEX_PARENT);
 	ret = file_remove_suid(out);
-	if (likely(!ret))
+	if (likely(!ret)) {
+		if (pipe->inode)
+			mutex_lock_nested(&pipe->inode->i_mutex, I_MUTEX_CHILD);
 		ret = __splice_from_pipe(pipe, &sd, pipe_to_file);
-	inode_double_unlock(inode, pipe->inode);
+		if (pipe->inode)
+			mutex_unlock(&pipe->inode->i_mutex);
+	}
+	mutex_unlock(&inode->i_mutex);
 	if (ret > 0) {
 		unsigned long nr_pages;
 

[patch 26/58] ALSA: hda - add missing comma in ad1884_slave_vols

[Greg KH]

[-- Attachment #1: 0050-ALSA-hda-add-missing-comma-in-ad1884_slave_vols.patch --]
[-- Type: text/plain, Size: 838 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Akinobu Mita <akinobu.mita@gmail.com>

upstream commit: bca68467b59a24396554d8dd5979ee363c174854

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 sound/pci/hda/patch_analog.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/sound/pci/hda/patch_analog.c
+++ b/sound/pci/hda/patch_analog.c
@@ -3220,7 +3220,7 @@ static const char *ad1884_slave_vols[] =
 	"Mic Playback Volume",
 	"CD Playback Volume",
 	"Internal Mic Playback Volume",
-	"Docking Mic Playback Volume"
+	"Docking Mic Playback Volume",
 	"Beep Playback Volume",
 	"IEC958 Playback Volume",
 	NULL

[patch 27/58] SCSI: libiscsi: fix iscsi pool error path

[Greg KH]

[-- Attachment #1: 0052-SCSI-libiscsi-fix-iscsi-pool-error-path.patch --]
[-- Type: text/plain, Size: 1599 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Jean Delvare <jdelvare@suse.de>

upstream commit: f474a37bc48667595b5653a983b635c95ed82a3b

Memory freeing in iscsi_pool_free() looks wrong to me. Either q->pool
can be NULL and this should be tested before dereferencing it, or it
can't be NULL and it shouldn't be tested at all. As far as I can see,
the only case where q->pool is NULL is on early error in
iscsi_pool_init(). One possible way to fix the bug is thus to not
call iscsi_pool_free() in this case (nothing needs to be freed anyway)
and then we can get rid of the q->pool check.

Signed-off-by: Jean Delvare <jdelvare@suse.de>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/scsi/libiscsi.c |    5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -1807,7 +1807,7 @@ iscsi_pool_init(struct iscsi_pool *q, in
 		num_arrays++;
 	q->pool = kzalloc(num_arrays * max * sizeof(void*), GFP_KERNEL);
 	if (q->pool == NULL)
-		goto enomem;
+		return -ENOMEM;
 
 	q->queue = kfifo_init((void*)q->pool, max * sizeof(void*),
 			      GFP_KERNEL, NULL);
@@ -1842,8 +1842,7 @@ void iscsi_pool_free(struct iscsi_pool *
 
 	for (i = 0; i < q->max; i++)
 		kfree(q->pool[i]);
-	if (q->pool)
-		kfree(q->pool);
+	kfree(q->pool);
 	kfree(q->queue);
 }
 EXPORT_SYMBOL_GPL(iscsi_pool_free);

[patch 28/58] SCSI: libiscsi: fix iscsi pool error path again

[Greg KH]

[-- Warning: decoded text below may be mangled, UTF-8 assumed --]
[-- Attachment #1: 0053-SCSI-libiscsi-fix-iscsi-pool-error-path.patch --]
[-- Type: text/plain, Size: 1600 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Jean Delvare <jdelvare@suse.de>

upstream commit: fd6e1c14b73dbab89cb76af895d5612e4a8b5522

Le lundi 30 mars 2009, Chris Wright a écrit :
> q->queue could be ERR_PTR(-ENOMEM) which will break unwinding
> on error.  Make iscsi_pool_free more defensive.
>

Making the freeing of q->queue dependent on q->pool being set looks
really weird (although it is correct at the moment. But this seems
to be fixable in a much simpler way.

With the benefit that only the error case is slowed down. In both
cases we have a problem if q->queue contains an error value but it's
not -ENOMEM. Apparently this can't happen today, but it doesn't feel
right to assume this will always be true. Maybe it's the right time
to fix this as well.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
[chrisw: this is a fixlet to f474a37b, also in -stable]
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/scsi/libiscsi.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -1811,8 +1811,10 @@ iscsi_pool_init(struct iscsi_pool *q, in
 
 	q->queue = kfifo_init((void*)q->pool, max * sizeof(void*),
 			      GFP_KERNEL, NULL);
-	if (q->queue == ERR_PTR(-ENOMEM))
+	if (IS_ERR(q->queue)) {
+		q->queue = NULL;
 		goto enomem;
+	}
 
 	for (i = 0; i < max; i++) {
 		q->pool[i] = kzalloc(item_size, GFP_KERNEL);

[patch 29/58] sched: do not count frozen tasks toward load

[Greg KH]

[-- Attachment #1: 0060-sched-do-not-count-frozen-tasks-toward-load.patch --]
[-- Type: text/plain, Size: 2088 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Nathan Lynch <ntl@pobox.com>

upstream commit: e3c8ca8336707062f3f7cb1cd7e6b3c753baccdd

Freezing tasks via the cgroup freezer causes the load average to climb
because the freezer's current implementation puts frozen tasks in
uninterruptible sleep (D state).

Some applications which perform job-scheduling functions consult the
load average when making decisions.  If a cgroup is frozen, the load
average does not provide a useful measure of the system's utilization
to such applications.  This is especially inconvenient if the job
scheduler employs the cgroup freezer as a mechanism for preempting low
priority jobs.  Contrast this with using SIGSTOP for the same purpose:
the stopped tasks do not count toward system load.

Change task_contributes_to_load() to return false if the task is
frozen.  This results in /proc/loadavg behavior that better meets
users' expectations.

Signed-off-by: Nathan Lynch <ntl@pobox.com>
Acked-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Nigel Cunningham <nigel@tuxonice.net>
Tested-by: Nigel Cunningham <nigel@tuxonice.net>
Cc: containers@lists.linux-foundation.org
Cc: linux-pm@lists.linux-foundation.org
Cc: Matt Helsley <matthltc@us.ibm.com>
LKML-Reference: <20090408194512.47a99b95@manatee.lan>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 include/linux/sched.h |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -201,7 +201,8 @@ extern unsigned long long time_sync_thre
 #define task_is_stopped_or_traced(task)	\
 			((task->state & (__TASK_STOPPED | __TASK_TRACED)) != 0)
 #define task_contributes_to_load(task)	\
-				((task->state & TASK_UNINTERRUPTIBLE) != 0)
+				((task->state & TASK_UNINTERRUPTIBLE) != 0 && \
+				 (task->flags & PF_FROZEN) == 0)
 
 #define __set_task_state(tsk, state_value)		\
 	do { (tsk)->state = (state_value); } while (0)

[patch 30/58] add some long-missing capabilities to fs_mask

[Greg KH]

[-- Attachment #1: 0063-add-some-long-missing-capabilities-to-fs_mask.patch --]
[-- Type: text/plain, Size: 3005 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Serge E. Hallyn <serue@us.ibm.com>

upstream commit: 0ad30b8fd5fe798aae80df6344b415d8309342cc

When POSIX capabilities were introduced during the 2.1 Linux
cycle, the fs mask, which represents the capabilities which having
fsuid==0 is supposed to grant, did not include CAP_MKNOD and
CAP_LINUX_IMMUTABLE.  However, before capabilities the privilege
to call these did in fact depend upon fsuid==0.

This patch introduces those capabilities into the fsmask,
restoring the old behavior.

See the thread starting at http://lkml.org/lkml/2009/3/11/157 for
reference.

Note that if this fix is deemed valid, then earlier kernel versions (2.4
and 2.2) ought to be fixed too.

Changelog:
	[Mar 23] Actually delete old CAP_FS_SET definition...
	[Mar 20] Updated against J. Bruce Fields's patch

Reported-by: Igor Zhbanov <izh1979@gmail.com>
Signed-off-by: Serge E. Hallyn <serue@us.ibm.com>
Cc: stable@kernel.org
Cc: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 include/linux/capability.h |   23 +++++++++++++++++++----
 1 file changed, 19 insertions(+), 4 deletions(-)

--- a/include/linux/capability.h
+++ b/include/linux/capability.h
@@ -366,7 +366,21 @@ typedef struct kernel_cap_struct {
 #define CAP_FOR_EACH_U32(__capi)  \
 	for (__capi = 0; __capi < _KERNEL_CAPABILITY_U32S; ++__capi)
 
+/*
+ * CAP_FS_MASK and CAP_NFSD_MASKS:
+ *
+ * The fs mask is all the privileges that fsuid==0 historically meant.
+ * At one time in the past, that included CAP_MKNOD and CAP_LINUX_IMMUTABLE.
+ *
+ * It has never meant setting security.* and trusted.* xattrs.
+ *
+ * We could also define fsmask as follows:
+ *   1. CAP_FS_MASK is the privilege to bypass all fs-related DAC permissions
+ *   2. The security.* and trusted.* xattrs are fs-related MAC permissions
+ */
+
 # define CAP_FS_MASK_B0     (CAP_TO_MASK(CAP_CHOWN)		\
+			    | CAP_TO_MASK(CAP_MKNOD)		\
 			    | CAP_TO_MASK(CAP_DAC_OVERRIDE)	\
 			    | CAP_TO_MASK(CAP_DAC_READ_SEARCH)	\
 			    | CAP_TO_MASK(CAP_FOWNER)		\
@@ -381,11 +395,12 @@ typedef struct kernel_cap_struct {
 # define CAP_EMPTY_SET    ((kernel_cap_t){{ 0, 0 }})
 # define CAP_FULL_SET     ((kernel_cap_t){{ ~0, ~0 }})
 # define CAP_INIT_EFF_SET ((kernel_cap_t){{ ~CAP_TO_MASK(CAP_SETPCAP), ~0 }})
-# define CAP_FS_SET       ((kernel_cap_t){{ CAP_FS_MASK_B0, CAP_FS_MASK_B1 } })
+# define CAP_FS_SET       ((kernel_cap_t){{ CAP_FS_MASK_B0 \
+				    | CAP_TO_MASK(CAP_LINUX_IMMUTABLE), \
+				    CAP_FS_MASK_B1 } })
 # define CAP_NFSD_SET     ((kernel_cap_t){{ CAP_FS_MASK_B0 \
-					    | CAP_TO_MASK(CAP_SYS_RESOURCE) \
-					    | CAP_TO_MASK(CAP_MKNOD), \
-					    CAP_FS_MASK_B1 } })
+				    | CAP_TO_MASK(CAP_SYS_RESOURCE), \
+				    CAP_FS_MASK_B1 } })
 
 #endif /* _KERNEL_CAPABILITY_U32S != 2 */
 

[patch 31/58] powerpc: Fix data-corrupting bug in __futex_atomic_op

[Greg KH]

[-- Attachment #1: 0068-powerpc-Fix-data-corrupting-bug-in-__futex_atomic_o.patch --]
[-- Type: text/plain, Size: 2191 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Paul Mackerras <paulus@samba.org>

upstream commit: 306a82881b14d950d59e0b59a55093a07d82aa9a

Richard Henderson pointed out that the powerpc __futex_atomic_op has a
bug: it will write the wrong value if the stwcx. fails and it has to
retry the lwarx/stwcx. loop, since 'oparg' will have been overwritten
by the result from the first time around the loop.  This happens
because it uses the same register for 'oparg' (an input) as it uses
for the result.

This fixes it by using separate registers for 'oparg' and 'ret'.

Cc: stable@kernel.org
Signed-off-by: Paul Mackerras <paulus@samba.org>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 arch/powerpc/include/asm/futex.h |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

--- a/arch/powerpc/include/asm/futex.h
+++ b/arch/powerpc/include/asm/futex.h
@@ -27,7 +27,7 @@
 	PPC_LONG "1b,4b,2b,4b\n" \
 	".previous" \
 	: "=&r" (oldval), "=&r" (ret) \
-	: "b" (uaddr), "i" (-EFAULT), "1" (oparg) \
+	: "b" (uaddr), "i" (-EFAULT), "r" (oparg) \
 	: "cr0", "memory")
 
 static inline int futex_atomic_op_inuser (int encoded_op, int __user *uaddr)
@@ -47,19 +47,19 @@ static inline int futex_atomic_op_inuser
 
 	switch (op) {
 	case FUTEX_OP_SET:
-		__futex_atomic_op("", ret, oldval, uaddr, oparg);
+		__futex_atomic_op("mr %1,%4\n", ret, oldval, uaddr, oparg);
 		break;
 	case FUTEX_OP_ADD:
-		__futex_atomic_op("add %1,%0,%1\n", ret, oldval, uaddr, oparg);
+		__futex_atomic_op("add %1,%0,%4\n", ret, oldval, uaddr, oparg);
 		break;
 	case FUTEX_OP_OR:
-		__futex_atomic_op("or %1,%0,%1\n", ret, oldval, uaddr, oparg);
+		__futex_atomic_op("or %1,%0,%4\n", ret, oldval, uaddr, oparg);
 		break;
 	case FUTEX_OP_ANDN:
-		__futex_atomic_op("andc %1,%0,%1\n", ret, oldval, uaddr, oparg);
+		__futex_atomic_op("andc %1,%0,%4\n", ret, oldval, uaddr, oparg);
 		break;
 	case FUTEX_OP_XOR:
-		__futex_atomic_op("xor %1,%0,%1\n", ret, oldval, uaddr, oparg);
+		__futex_atomic_op("xor %1,%0,%4\n", ret, oldval, uaddr, oparg);
 		break;
 	default:
 		ret = -ENOSYS;

[patch 32/58] hpt366: fix HPT370 DMA timeouts

[Greg KH]

[-- Attachment #1: 0069-hpt366-fix-HPT370-DMA-timeouts.patch --]
[-- Type: text/plain, Size: 1620 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Sergei Shtylyov <sshtylyov@ru.mvista.com>

upstream commit: c018f1ee5cf81e58b93d9e93a2ee39cad13dc1ac

The big driver change in 2.4.19-rc1 introduced a regression for many HPT370[A]
chips -- DMA stopped to work completely, only causing endless timeouts...

The culprit has been identified (at last!): it turned to be the code resetting
the DMA state machine before each transfer. Stop doing it now as this counter-
measure has clearly caused more harm than good.

This should fix the kernel.org bug #7703.

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/ide/pci/hpt366.c |    4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -114,6 +114,8 @@
  *   the register setting lists into the table indexed by the clock selected
  * - set the correct hwif->ultra_mask for each individual chip
  * - add Ultra and MW DMA mode filtering for the HPT37[24] based SATA cards
+ * - stop resetting HPT370's state machine before each DMA transfer as that has
+ *   caused more harm than good
  *	Sergei Shtylyov, <sshtylyov@ru.mvista.com> or <source@mvista.com>
  */
 
@@ -134,7 +136,7 @@
 #define DRV_NAME "hpt366"
 
 /* various tuning parameters */
-#define HPT_RESET_STATE_ENGINE
+#undef	HPT_RESET_STATE_ENGINE
 #undef	HPT_DELAY_INTERRUPT
 #define HPT_SERIALIZE_IO	0
 

[patch 33/58] pata_hpt37x: fix HPT370 DMA timeouts

[Greg KH]

[-- Attachment #1: 0070-pata_hpt37x-fix-HPT370-DMA-timeouts.patch --]
[-- Type: text/plain, Size: 2224 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Sergei Shtylyov <sshtylyov@ru.mvista.com>

upstream commit: 265b7215aed36941620b65ecfff516200fb190c1

The libata driver has copied the code from the IDE driver which caused a post
2.4.18 regression on many HPT370[A] chips -- DMA stopped to work completely,
only causing timeouts.  Now remove hpt370_bmdma_start() for good...

Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/ata/pata_hpt37x.c |   22 ++--------------------
 1 file changed, 2 insertions(+), 20 deletions(-)

--- a/drivers/ata/pata_hpt37x.c
+++ b/drivers/ata/pata_hpt37x.c
@@ -8,7 +8,7 @@
  * Copyright (C) 1999-2003		Andre Hedrick <andre@linux-ide.org>
  * Portions Copyright (C) 2001	        Sun Microsystems, Inc.
  * Portions Copyright (C) 2003		Red Hat Inc
- * Portions Copyright (C) 2005-2007	MontaVista Software, Inc.
+ * Portions Copyright (C) 2005-2009	MontaVista Software, Inc.
  *
  * TODO
  *	Look into engine reset on timeout errors. Should not be	required.
@@ -24,7 +24,7 @@
 #include <linux/libata.h>
 
 #define DRV_NAME	"pata_hpt37x"
-#define DRV_VERSION	"0.6.11"
+#define DRV_VERSION	"0.6.12"
 
 struct hpt_clock {
 	u8	xfer_speed;
@@ -445,23 +445,6 @@ static void hpt370_set_dmamode(struct at
 }
 
 /**
- *	hpt370_bmdma_start		-	DMA engine begin
- *	@qc: ATA command
- *
- *	The 370 and 370A want us to reset the DMA engine each time we
- *	use it. The 372 and later are fine.
- */
-
-static void hpt370_bmdma_start(struct ata_queued_cmd *qc)
-{
-	struct ata_port *ap = qc->ap;
-	struct pci_dev *pdev = to_pci_dev(ap->host->dev);
-	pci_write_config_byte(pdev, 0x50 + 4 * ap->port_no, 0x37);
-	udelay(10);
-	ata_bmdma_start(qc);
-}
-
-/**
  *	hpt370_bmdma_end		-	DMA engine stop
  *	@qc: ATA command
  *
@@ -598,7 +581,6 @@ static struct scsi_host_template hpt37x_
 static struct ata_port_operations hpt370_port_ops = {
 	.inherits	= &ata_bmdma_port_ops,
 
-	.bmdma_start 	= hpt370_bmdma_start,
 	.bmdma_stop	= hpt370_bmdma_stop,
 
 	.mode_filter	= hpt370_filter,

[patch 34/58] usb gadget: fix ethernet link reports to ethtool

[Greg KH]

[-- Attachment #1: 0077-usb-gadget-fix-ethernet-link-reports-to-ethtool.patch --]
[-- Type: text/plain, Size: 1684 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Jonathan McDowell <noodles@earth.li>

upstream commit: 237e75bf1e558f7330f8deb167fa3116405bef2c

The g_ether USB gadget driver currently decides whether or not there's a
link to report back for eth_get_link based on if the USB link speed is
set. The USB gadget speed is however often set even before the device is
enumerated. It seems more sensible to only report a "link" if we're
actually connected to a host that wants to talk to us. The patch below
does this for me - tested with the PXA27x UDC driver.

Signed-off-by: Jonathan McDowell <noodles@earth.li>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
---
 drivers/usb/gadget/u_ether.c |    8 +-------
 1 file changed, 1 insertion(+), 7 deletions(-)

--- a/drivers/usb/gadget/u_ether.c
+++ b/drivers/usb/gadget/u_ether.c
@@ -175,12 +175,6 @@ static void eth_get_drvinfo(struct net_d
 	strlcpy(p->bus_info, dev_name(&dev->gadget->dev), sizeof p->bus_info);
 }
 
-static u32 eth_get_link(struct net_device *net)
-{
-	struct eth_dev	*dev = netdev_priv(net);
-	return dev->gadget->speed != USB_SPEED_UNKNOWN;
-}
-
 /* REVISIT can also support:
  *   - WOL (by tracking suspends and issuing remote wakeup)
  *   - msglevel (implies updated messaging)
@@ -189,7 +183,7 @@ static u32 eth_get_link(struct net_devic
 
 static struct ethtool_ops ops = {
 	.get_drvinfo = eth_get_drvinfo,
-	.get_link = eth_get_link
+	.get_link = ethtool_op_get_link,
 };
 
 static void defer_kevent(struct eth_dev *dev, int flag)

[patch 35/58] USB: ftdi_sio: add vendor/project id for JETI specbos 1201 spectrometer

[Greg KH]

[-- Attachment #1: 0078-USB-ftdi_sio-add-vendor-project-id-for-JETI-specbo.patch --]
[-- Type: text/plain, Size: 1250 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Peter Korsgaard <jacmet@sunsite.dk>

upstream commit: ae27d84351f1f3568118318a8c40ff3a154bd629

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
---
 drivers/usb/serial/ftdi_sio.c |    1 +
 drivers/usb/serial/ftdi_sio.h |    7 +++++++
 2 files changed, 8 insertions(+)

--- a/drivers/usb/serial/ftdi_sio.c
+++ b/drivers/usb/serial/ftdi_sio.c
@@ -662,6 +662,7 @@ static struct usb_device_id id_table_com
 	{ USB_DEVICE(DE_VID, WHT_PID) },
 	{ USB_DEVICE(ADI_VID, ADI_GNICE_PID),
 		.driver_info = (kernel_ulong_t)&ftdi_jtag_quirk },
+	{ USB_DEVICE(JETI_VID, JETI_SPC1201_PID) },
 	{ },					/* Optional parameter entry */
 	{ }					/* Terminating entry */
 };
--- a/drivers/usb/serial/ftdi_sio.h
+++ b/drivers/usb/serial/ftdi_sio.h
@@ -890,6 +890,13 @@
 #define ADI_GNICE_PID 		0xF000
 
 /*
+ * JETI SPECTROMETER SPECBOS 1201
+ * http://www.jeti.com/products/sys/scb/scb1201.php
+ */
+#define JETI_VID		0x0c6c
+#define JETI_SPC1201_PID	0x04b2
+
+/*
  *   BmRequestType:  1100 0000b
  *   bRequest:       FTDI_E2_READ
  *   wValue:         0

[patch 36/58] USB: fix oops in cdc-wdm in case of malformed descriptors

[Greg KH]

[-- Attachment #1: 0079-USB-fix-oops-in-cdc-wdm-in-case-of-malformed-descri.patch --]
[-- Type: text/plain, Size: 782 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Oliver Neukum <oliver@neukum.org>

upstream commit: e13c594f3a1fc2c78e7a20d1a07974f71e4b448f

cdc-wdm needs to ignore extremely malformed descriptors.

Signed-off-by: Oliver Neukum <oliver@neukum.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
---
 drivers/usb/class/cdc-wdm.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/usb/class/cdc-wdm.c
+++ b/drivers/usb/class/cdc-wdm.c
@@ -641,7 +641,7 @@ next_desc:
 
 	iface = &intf->altsetting[0];
 	ep = &iface->endpoint[0].desc;
-	if (!usb_endpoint_is_int_in(ep)) {
+	if (!ep || !usb_endpoint_is_int_in(ep)) {
 		rv = -EINVAL;
 		goto err;
 	}

[patch 37/58] USB: usb-storage: augment unusual_devs entry for Simple Tech/Datafab

[Greg KH]

[-- Attachment #1: 0080-USB-usb-storage-augment-unusual_devs-entry-for-Sim.patch --]
[-- Type: text/plain, Size: 1378 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Alan Stern <stern@rowland.harvard.edu>

upstream commit: e4813eec8d47c8299d968bd5349dc881fa481c26

This patch (as1227) adds the MAX_SECTORS_64 flag to the unusual_devs
entry for the Simple Tech/Datafab controller.  This fixes Bugzilla
#12882.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Reported-and-tested-by: binbin <binbinsh@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
---
 drivers/usb/storage/unusual_devs.h |    6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -1241,12 +1241,14 @@ UNUSUAL_DEV(  0x07c4, 0xa400, 0x0000, 0x
 		US_SC_DEVICE, US_PR_DEVICE, NULL,
 		US_FL_FIX_INQUIRY ),
 
-/* Reported by Rauch Wolke <rauchwolke@gmx.net> */
+/* Reported by Rauch Wolke <rauchwolke@gmx.net>
+ * and augmented by binbin <binbinsh@gmail.com> (Bugzilla #12882)
+ */
 UNUSUAL_DEV(  0x07c4, 0xa4a5, 0x0000, 0xffff,
 		"Simple Tech/Datafab",
 		"CF+SM Reader",
 		US_SC_DEVICE, US_PR_DEVICE, NULL,
-		US_FL_IGNORE_RESIDUE ),
+		US_FL_IGNORE_RESIDUE | US_FL_MAX_SECTORS_64 ),
 
 /* Casio QV 2x00/3x00/4000/8000 digital still cameras are not conformant
  * to the USB storage specification in two ways:

[patch 38/58] agp: zero pages before sending to userspace

[Greg KH]

[-- Attachment #1: 0093-agp-zero-pages-before-sending-to-userspace.patch --]
[-- Type: text/plain, Size: 926 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

upstream commit: 59de2bebabc5027f93df999d59cc65df591c3e6e

CVE-2009-1192

AGP pages might be mapped into userspace finally, so the pages should be
set to zero before userspace can use it. Otherwise there is potential
information leakage.

Signed-off-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/char/agp/generic.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/char/agp/generic.c
+++ b/drivers/char/agp/generic.c
@@ -1207,7 +1207,7 @@ void *agp_generic_alloc_page(struct agp_
 {
 	struct page * page;
 
-	page = alloc_page(GFP_KERNEL | GFP_DMA32);
+	page = alloc_page(GFP_KERNEL | GFP_DMA32 | __GFP_ZERO);
 	if (page == NULL)
 		return NULL;
 

[patch 39/58] hugetlbfs: return negative error code for bad mount option

[Greg KH]

[-- Attachment #1: 0096-hugetlbfs-return-negative-error-code-for-bad-mount.patch --]
[-- Type: text/plain, Size: 1390 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Akinobu Mita <akinobu.mita@gmail.com>

upstream commit: c12ddba09394c60e1120e6997794fa6ed52da884

This fixes the following BUG:

  # mount -o size=MM -t hugetlbfs none /huge
  hugetlbfs: Bad value 'MM' for mount option 'size=MM'
  ------------[ cut here ]------------
  kernel BUG at fs/super.c:996!

Due to

	BUG_ON(!mnt->mnt_sb);

in vfs_kern_mount().

Also, remove unused #include <linux/quotaops.h>

Cc: William Irwin <wli@holomorphy.com>
Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 fs/hugetlbfs/inode.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/fs/hugetlbfs/inode.c
+++ b/fs/hugetlbfs/inode.c
@@ -26,7 +26,6 @@
 #include <linux/pagevec.h>
 #include <linux/parser.h>
 #include <linux/mman.h>
-#include <linux/quotaops.h>
 #include <linux/slab.h>
 #include <linux/dnotify.h>
 #include <linux/statfs.h>
@@ -838,7 +837,7 @@ hugetlbfs_parse_options(char *options, s
 bad_val:
  	printk(KERN_ERR "hugetlbfs: Bad value '%s' for mount option '%s'\n",
 	       args[0].from, p);
- 	return 1;
+ 	return -EINVAL;
 }
 
 static int

[patch 40/58] kprobes: Fix locking imbalance in kretprobes

[Greg KH]

[-- Attachment #1: kprobes-fix-locking-imbalance-in-kretprobes.patch --]
[-- Type: text/plain, Size: 2992 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Ananth N Mavinakayanahalli <ananth@in.ibm.com>

commit f02b8624fedca39886b0eef770dca70c2f0749b3 upstream.

Fix locking imbalance in kretprobes:

=====================================
[ BUG: bad unlock balance detected! ]
-------------------------------------
kthreadd/2 is trying to release lock (&rp->lock) at:
[<c06b3080>] pre_handler_kretprobe+0xea/0xf4
but there are no more locks to release!

other info that might help us debug this:
1 lock held by kthreadd/2:
 #0:  (rcu_read_lock){..--}, at: [<c06b2b24>] __atomic_notifier_call_chain+0x0/0x5a

stack backtrace:
Pid: 2, comm: kthreadd Not tainted 2.6.29-rc8 #1
Call Trace:
 [<c06ae498>] ? printk+0xf/0x17
 [<c06b3080>] ? pre_handler_kretprobe+0xea/0xf4
 [<c044ce6c>] print_unlock_inbalance_bug+0xc3/0xce
 [<c0444d4b>] ? clocksource_read+0x7/0xa
 [<c04450a4>] ? getnstimeofday+0x5f/0xf6
 [<c044a9ca>] ? register_lock_class+0x17/0x293
 [<c044b72c>] ? mark_lock+0x1e/0x30b
 [<c0448956>] ? tick_dev_program_event+0x4a/0xbc
 [<c0498100>] ? __slab_alloc+0xa5/0x415
 [<c06b2fbe>] ? pre_handler_kretprobe+0x28/0xf4
 [<c06b3080>] ? pre_handler_kretprobe+0xea/0xf4
 [<c044cf1b>] lock_release_non_nested+0xa4/0x1a5
 [<c06b3080>] ? pre_handler_kretprobe+0xea/0xf4
 [<c044d15d>] lock_release+0x141/0x166
 [<c06b07dd>] _spin_unlock_irqrestore+0x19/0x50
 [<c06b3080>] pre_handler_kretprobe+0xea/0xf4
 [<c06b20b5>] kprobe_exceptions_notify+0x1c9/0x43e
 [<c06b2b02>] notifier_call_chain+0x26/0x48
 [<c06b2b5b>] __atomic_notifier_call_chain+0x37/0x5a
 [<c06b2b24>] ? __atomic_notifier_call_chain+0x0/0x5a
 [<c06b2b8a>] atomic_notifier_call_chain+0xc/0xe
 [<c0442d0d>] notify_die+0x2d/0x2f
 [<c06b0f9c>] do_int3+0x1f/0x71
 [<c06b0e84>] int3+0x2c/0x34
 [<c042d476>] ? do_fork+0x1/0x288
 [<c040221b>] ? kernel_thread+0x71/0x79
 [<c043ed1b>] ? kthread+0x0/0x60
 [<c043ed1b>] ? kthread+0x0/0x60
 [<c04040b8>] ? kernel_thread_helper+0x0/0x10
 [<c043ec7f>] kthreadd+0xac/0x148
 [<c043ebd3>] ? kthreadd+0x0/0x148
 [<c04040bf>] kernel_thread_helper+0x7/0x10

Signed-off-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Tested-by: Bharata B Rao <bharata@linux.vnet.ibm.com>
Cc: Masami Hiramatsu <mhiramat@redhat.com>
Cc: Jim Keniston <jkenisto@us.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
LKML-Reference: <20090318113621.GB4129@in.ibm.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 kernel/kprobes.c |    4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

--- a/kernel/kprobes.c
+++ b/kernel/kprobes.c
@@ -890,10 +890,8 @@ static int __kprobes pre_handler_kretpro
 		ri->rp = rp;
 		ri->task = current;
 
-		if (rp->entry_handler && rp->entry_handler(ri, regs)) {
-			spin_unlock_irqrestore(&rp->lock, flags);
+		if (rp->entry_handler && rp->entry_handler(ri, regs))
 			return 0;
-		}
 
 		arch_prepare_kretprobe(ri, regs);
 

[patch 41/58] block: revert part of 18ce3751ccd488c78d3827e9f6bf54e6322676fb

[Greg KH]

[-- Attachment #1: block-revert-part-of-18ce3751ccd488c78d3827e9f6bf54e6322676fb.patch --]
[-- Type: text/plain, Size: 1955 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Jens Axboe <jens.axboe@oracle.com>

commit 78f707bfc723552e8309b7c38a8d0cc51012e813 upstream.

The above commit added WRITE_SYNC and switched various places to using
that for committing writes that will be waited upon immediately after
submission. However, this causes a performance regression with AS and CFQ
for ext3 at least, since sync_dirty_buffer() will submit some writes with
WRITE_SYNC while ext3 has sumitted others dependent writes without the sync
flag set. This causes excessive anticipation/idling in the IO scheduler
because sync and async writes get interleaved, causing a big performance
regression for the below test case (which is meant to simulate sqlite
like behaviour).

---- test case ----

int main(int argc, char **argv)
{

	int fdes, i;
	FILE *fp;
	struct timeval start;
	struct timeval end;
	struct timeval res;

	gettimeofday(&start, NULL);
	for (i=0; i<ROWS; i++) {
		fp = fopen("test_file", "a");
		fprintf(fp, "Some Text Data\n");
		fdes = fileno(fp);
		fsync(fdes);
		fclose(fp);
	}
	gettimeofday(&end, NULL);

	timersub(&end, &start, &res);
	fprintf(stdout, "time to write %d lines is %ld(msec)\n", ROWS,
			(res.tv_sec*1000000 + res.tv_usec)/1000);

	return 0;
}

-------------------

Thanks to Sean.White@APCC.com for tracking down this performance
regression and providing a test case.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 fs/buffer.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/buffer.c
+++ b/fs/buffer.c
@@ -3042,7 +3042,7 @@ int sync_dirty_buffer(struct buffer_head
 	if (test_clear_buffer_dirty(bh)) {
 		get_bh(bh);
 		bh->b_end_io = end_buffer_write_sync;
-		ret = submit_bh(WRITE_SYNC, bh);
+		ret = submit_bh(WRITE, bh);
 		wait_on_buffer(bh);
 		if (buffer_eopnotsupp(bh)) {
 			clear_buffer_eopnotsupp(bh);

[patch 42/58] r8169: Dont update statistics counters when interface is down

[Greg KH]

[-- Attachment #1: r8169-don-t-update-statistics-counters-when-interface-is-down.patch --]
[-- Type: text/plain, Size: 5583 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Francois Romieu <romieu@fr.zoreil.com>

Upstream as 355423d0849f4506bc71ab2738d38cb74429aaef (post 2.6.28).

Some Realtek chips (RTL8169sb/8110sb in my case) are unable to retrieve
ethtool statistics when the interface is down. The process stays in
endless loop in rtl8169_get_ethtool_stats. This is because these chips
need to have receiver enabled (CmdRxEnb bit in ChipCmd register) that is
cleared when the interface is going down. It's better to update statistics
only when the interface is up and otherwise return copy of statistics
grabbed when the interface was up (in rtl8169_close).

It is interesting that PCI-E NICs (like 8168b/8111b...) are not affected.

Signed-off-by: Ivan Vecera <ivecera@redhat.com>
Acked-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/net/r8169.c |   93 ++++++++++++++++++++++++++++++++--------------------
 1 file changed, 58 insertions(+), 35 deletions(-)

--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -375,6 +375,22 @@ enum features {
 	RTL_FEATURE_GMII	= (1 << 2),
 };
 
+struct rtl8169_counters {
+	__le64	tx_packets;
+	__le64	rx_packets;
+	__le64	tx_errors;
+	__le32	rx_errors;
+	__le16	rx_missed;
+	__le16	align_errors;
+	__le32	tx_one_collision;
+	__le32	tx_multi_collision;
+	__le64	rx_unicast;
+	__le64	rx_broadcast;
+	__le32	rx_multicast;
+	__le16	tx_aborted;
+	__le16	tx_underun;
+};
+
 struct rtl8169_private {
 	void __iomem *mmio_addr;	/* memory map physical address */
 	struct pci_dev *pci_dev;	/* Index of PCI device */
@@ -416,6 +432,7 @@ struct rtl8169_private {
 	unsigned features;
 
 	struct mii_if_info mii;
+	struct rtl8169_counters counters;
 };
 
 MODULE_AUTHOR("Realtek and the Linux r8169 crew <netdev@vger.kernel.org>");
@@ -960,22 +977,6 @@ static const char rtl8169_gstrings[][ETH
 	"tx_underrun",
 };
 
-struct rtl8169_counters {
-	__le64	tx_packets;
-	__le64	rx_packets;
-	__le64	tx_errors;
-	__le32	rx_errors;
-	__le16	rx_missed;
-	__le16	align_errors;
-	__le32	tx_one_collision;
-	__le32	tx_multi_collision;
-	__le64	rx_unicast;
-	__le64	rx_broadcast;
-	__le32	rx_multicast;
-	__le16	tx_aborted;
-	__le16	tx_underun;
-};
-
 static int rtl8169_get_sset_count(struct net_device *dev, int sset)
 {
 	switch (sset) {
@@ -986,16 +987,21 @@ static int rtl8169_get_sset_count(struct
 	}
 }
 
-static void rtl8169_get_ethtool_stats(struct net_device *dev,
-				      struct ethtool_stats *stats, u64 *data)
+static void rtl8169_update_counters(struct net_device *dev)
 {
 	struct rtl8169_private *tp = netdev_priv(dev);
 	void __iomem *ioaddr = tp->mmio_addr;
 	struct rtl8169_counters *counters;
 	dma_addr_t paddr;
 	u32 cmd;
+	int wait = 1000;
 
-	ASSERT_RTNL();
+	/*
+	 * Some chips are unable to dump tally counters when the receiver
+	 * is disabled.
+	 */
+	if ((RTL_R8(ChipCmd) & CmdRxEnb) == 0)
+		return;
 
 	counters = pci_alloc_consistent(tp->pci_dev, sizeof(*counters), &paddr);
 	if (!counters)
@@ -1006,31 +1012,45 @@ static void rtl8169_get_ethtool_stats(st
 	RTL_W32(CounterAddrLow, cmd);
 	RTL_W32(CounterAddrLow, cmd | CounterDump);
 
-	while (RTL_R32(CounterAddrLow) & CounterDump) {
-		if (msleep_interruptible(1))
+	while (wait--) {
+		if ((RTL_R32(CounterAddrLow) & CounterDump) == 0) {
+			/* copy updated counters */
+			memcpy(&tp->counters, counters, sizeof(*counters));
 			break;
+		}
+		udelay(10);
 	}
 
 	RTL_W32(CounterAddrLow, 0);
 	RTL_W32(CounterAddrHigh, 0);
 
-	data[0] = le64_to_cpu(counters->tx_packets);
-	data[1] = le64_to_cpu(counters->rx_packets);
-	data[2] = le64_to_cpu(counters->tx_errors);
-	data[3] = le32_to_cpu(counters->rx_errors);
-	data[4] = le16_to_cpu(counters->rx_missed);
-	data[5] = le16_to_cpu(counters->align_errors);
-	data[6] = le32_to_cpu(counters->tx_one_collision);
-	data[7] = le32_to_cpu(counters->tx_multi_collision);
-	data[8] = le64_to_cpu(counters->rx_unicast);
-	data[9] = le64_to_cpu(counters->rx_broadcast);
-	data[10] = le32_to_cpu(counters->rx_multicast);
-	data[11] = le16_to_cpu(counters->tx_aborted);
-	data[12] = le16_to_cpu(counters->tx_underun);
-
 	pci_free_consistent(tp->pci_dev, sizeof(*counters), counters, paddr);
 }
 
+static void rtl8169_get_ethtool_stats(struct net_device *dev,
+				      struct ethtool_stats *stats, u64 *data)
+{
+	struct rtl8169_private *tp = netdev_priv(dev);
+
+	ASSERT_RTNL();
+
+	rtl8169_update_counters(dev);
+
+	data[0] = le64_to_cpu(tp->counters.tx_packets);
+	data[1] = le64_to_cpu(tp->counters.rx_packets);
+	data[2] = le64_to_cpu(tp->counters.tx_errors);
+	data[3] = le32_to_cpu(tp->counters.rx_errors);
+	data[4] = le16_to_cpu(tp->counters.rx_missed);
+	data[5] = le16_to_cpu(tp->counters.align_errors);
+	data[6] = le32_to_cpu(tp->counters.tx_one_collision);
+	data[7] = le32_to_cpu(tp->counters.tx_multi_collision);
+	data[8] = le64_to_cpu(tp->counters.rx_unicast);
+	data[9] = le64_to_cpu(tp->counters.rx_broadcast);
+	data[10] = le32_to_cpu(tp->counters.rx_multicast);
+	data[11] = le16_to_cpu(tp->counters.tx_aborted);
+	data[12] = le16_to_cpu(tp->counters.tx_underun);
+}
+
 static void rtl8169_get_strings(struct net_device *dev, u32 stringset, u8 *data)
 {
 	switch(stringset) {
@@ -2979,6 +2999,9 @@ static int rtl8169_close(struct net_devi
 	struct rtl8169_private *tp = netdev_priv(dev);
 	struct pci_dev *pdev = tp->pci_dev;
 
+	/* update counters before going down */
+	rtl8169_update_counters(dev);
+
 	rtl8169_down(dev);
 
 	free_irq(dev->irq, dev);

[patch 43/58] r8169: use hardware auto-padding.

[Greg KH]

[-- Attachment #1: r8169-use-hardware-auto-padding.patch --]
[-- Type: text/plain, Size: 1062 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Francois Romieu <romieu@fr.zoreil.com>

Upstream as 97d477a914b146e7e6722ded21afa79886ae8ccd (post 2.6.28).

It shortens the code and fixes the current pci_unmap leak with
padded skb reported by Dave Jones.

Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/net/r8169.c |    8 --------
 1 file changed, 8 deletions(-)

--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -2549,13 +2549,6 @@ static int rtl8169_start_xmit(struct sk_
 		opts1 |= FirstFrag;
 	} else {
 		len = skb->len;
-
-		if (unlikely(len < ETH_ZLEN)) {
-			if (skb_padto(skb, ETH_ZLEN))
-				goto err_update_stats;
-			len = ETH_ZLEN;
-		}
-
 		opts1 |= FirstFrag | LastFrag;
 		tp->tx_skb[entry].skb = skb;
 	}
@@ -2593,7 +2586,6 @@ out:
 err_stop:
 	netif_stop_queue(dev);
 	ret = NETDEV_TX_BUSY;
-err_update_stats:
 	dev->stats.tx_dropped++;
 	goto out;
 }

[patch 44/58] r8169: reset IntrStatus after chip reset

[Greg KH]

[-- Attachment #1: r8169-reset-intrstatus-after-chip-reset.patch --]
[-- Type: text/plain, Size: 1753 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Francois Romieu <romieu@fr.zoreil.com>

Upstream as d78ad8cbfe73ad568de38814a75e9c92ad0a907c (post 2.6.29).

Original comment (Karsten):
On a MSI MS-6702E mainboard, when in rtl8169_init_one() for the first time
after BIOS has run, IntrStatus reads 5 after chip has been reset.
IntrStatus should equal 0 there, so patch changes IntrStatus reset to happen
after chip reset instead of before.

Remark (Francois):
Assuming that the loglevel of the driver is increased above NETIF_MSG_INTR,
the bug reveals itself with a typical "interrupt 0025 in poll" message
at startup. In retrospect, the message should had been read as an hint of
an unexpected hardware state several months ago :o(

Fixes (at least part of) https://bugzilla.redhat.com/show_bug.cgi?id=460747

Signed-off-by: Karsten Wiese <fzu@wemgehoertderstaat.de>
Signed-off-by: Francois Romieu <romieu@fr.zoreil.com>
Tested-by: Josep <josep.puigdemont@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/net/r8169.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- a/drivers/net/r8169.c
+++ b/drivers/net/r8169.c
@@ -1687,8 +1687,7 @@ rtl8169_init_one(struct pci_dev *pdev, c
 		goto err_out_free_res_4;
 	}
 
-	/* Unneeded ? Don't mess with Mrs. Murphy. */
-	rtl8169_irq_mask_and_ack(ioaddr);
+	RTL_W16(IntrMask, 0x0000);
 
 	/* Soft reset the chip. */
 	RTL_W8(ChipCmd, CmdReset);
@@ -1700,6 +1699,8 @@ rtl8169_init_one(struct pci_dev *pdev, c
 		msleep_interruptible(1);
 	}
 
+	RTL_W16(IntrStatus, 0xffff);
+
 	/* Identify chip attached to board */
 	rtl8169_get_mac_version(tp, ioaddr);
 

[patch 45/58] mm: check for no mmaps in exit_mmap()

[Greg KH]

[-- Attachment #1: mm-check-for-no-mmaps-in-exit_mmap.patch --]
[-- Type: text/plain, Size: 1295 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Johannes Weiner <hannes@cmpxchg.org>

commit dcd4a049b9751828c516c59709f3fdf50436df85 upstream.

When dup_mmap() ooms we can end up with mm->mmap == NULL.  The error
path does mmput() and unmap_vmas() gets a NULL vma which it
dereferences.

In exit_mmap() there is nothing to do at all for this case, we can
cancel the callpath right there.

[akpm@linux-foundation.org: add sorely-needed comment]
Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Reported-by: Akinobu Mita <akinobu.mita@gmail.com>
Cc: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Reported-by: Kir Kolyshkin <kir@openvz.org>
Tested-by: Kir Kolyshkin <kir@openvz.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 mm/mmap.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2068,6 +2068,9 @@ void exit_mmap(struct mm_struct *mm)
 	arch_exit_mmap(mm);
 	mmu_notifier_release(mm);
 
+	if (!mm->mmap)	/* Can happen if dup_mmap() received an OOM */
+		return;
+
 	lru_add_drain();
 	flush_cache_mm(mm);
 	tlb = tlb_gather_mmu(mm, 1);

[patch 46/58] powerpc: Sanitize stack pointer in signal handling code

[Greg KH]

[-- Attachment #1: powerpc-sanitize-stack-pointer-in-signal-handling-code.patch --]
[-- Type: text/plain, Size: 3977 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Josh Boyer <jwboyer@linux.vnet.ibm.com>

This has been backported to 2.6.27.x from commit efbda86098 in Linus' tree.

On powerpc64 machines running 32-bit userspace, we can get garbage bits in the
stack pointer passed into the kernel.  Most places handle this correctly, but
the signal handling code uses the passed value directly for allocating signal
stack frames.

This fixes the issue by introducing a get_clean_sp function that returns a
sanitized stack pointer.  For 32-bit tasks on a 64-bit kernel, the stack
pointer is masked correctly.  In all other cases, the stack pointer is simply
returned.

Additionally, we pass an 'is_32' parameter to get_sigframe now in order to
get the properly sanitized stack.  The callers are know to be 32 or 64-bit
statically.

Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 arch/powerpc/include/asm/processor.h |   19 +++++++++++++++++++
 arch/powerpc/kernel/signal.c         |    4 ++--
 arch/powerpc/kernel/signal.h         |    2 +-
 arch/powerpc/kernel/signal_32.c      |    4 ++--
 arch/powerpc/kernel/signal_64.c      |    2 +-
 5 files changed, 25 insertions(+), 6 deletions(-)

--- a/arch/powerpc/include/asm/processor.h
+++ b/arch/powerpc/include/asm/processor.h
@@ -309,6 +309,25 @@ static inline void prefetchw(const void 
 #define HAVE_ARCH_PICK_MMAP_LAYOUT
 #endif
 
+#ifdef CONFIG_PPC64
+static inline unsigned long get_clean_sp(struct pt_regs *regs, int is_32)
+{
+	unsigned long sp;
+
+	if (is_32)
+		sp = regs->gpr[1] & 0x0ffffffffUL;
+	else
+		sp = regs->gpr[1];
+
+	return sp;
+}
+#else
+static inline unsigned long get_clean_sp(struct pt_regs *regs, int is_32)
+{
+	return regs->gpr[1];
+}
+#endif
+
 #endif /* __KERNEL__ */
 #endif /* __ASSEMBLY__ */
 #endif /* _ASM_POWERPC_PROCESSOR_H */
--- a/arch/powerpc/kernel/signal_32.c
+++ b/arch/powerpc/kernel/signal_32.c
@@ -836,7 +836,7 @@ int handle_rt_signal32(unsigned long sig
 
 	/* Set up Signal Frame */
 	/* Put a Real Time Context onto stack */
-	rt_sf = get_sigframe(ka, regs, sizeof(*rt_sf));
+	rt_sf = get_sigframe(ka, regs, sizeof(*rt_sf), 1);
 	addr = rt_sf;
 	if (unlikely(rt_sf == NULL))
 		goto badframe;
@@ -1170,7 +1170,7 @@ int handle_signal32(unsigned long sig, s
 	unsigned long newsp = 0;
 
 	/* Set up Signal Frame */
-	frame = get_sigframe(ka, regs, sizeof(*frame));
+	frame = get_sigframe(ka, regs, sizeof(*frame), 1);
 	if (unlikely(frame == NULL))
 		goto badframe;
 	sc = (struct sigcontext __user *) &frame->sctx;
--- a/arch/powerpc/kernel/signal_64.c
+++ b/arch/powerpc/kernel/signal_64.c
@@ -404,7 +404,7 @@ int handle_rt_signal64(int signr, struct
 	unsigned long newsp = 0;
 	long err = 0;
 
-	frame = get_sigframe(ka, regs, sizeof(*frame));
+	frame = get_sigframe(ka, regs, sizeof(*frame), 0);
 	if (unlikely(frame == NULL))
 		goto badframe;
 
--- a/arch/powerpc/kernel/signal.c
+++ b/arch/powerpc/kernel/signal.c
@@ -26,12 +26,12 @@ int show_unhandled_signals = 0;
  * Allocate space for the signal frame
  */
 void __user * get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
-			   size_t frame_size)
+			   size_t frame_size, int is_32)
 {
         unsigned long oldsp, newsp;
 
         /* Default to using normal stack */
-        oldsp = regs->gpr[1];
+        oldsp = get_clean_sp(regs, is_32);
 
 	/* Check for alt stack */
 	if ((ka->sa.sa_flags & SA_ONSTACK) &&
--- a/arch/powerpc/kernel/signal.h
+++ b/arch/powerpc/kernel/signal.h
@@ -13,7 +13,7 @@
 #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
 
 extern void __user * get_sigframe(struct k_sigaction *ka, struct pt_regs *regs,
-				  size_t frame_size);
+				  size_t frame_size, int is_32);
 extern void restore_sigmask(sigset_t *set);
 
 extern int handle_signal32(unsigned long sig, struct k_sigaction *ka,

[patch 47/58] ath9k: implement IO serialization

[Greg KH]

[-- Attachment #1: ath9k-implement-io-serialization.patch --]
[-- Type: text/plain, Size: 4491 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Luis R. Rodriguez <lrodriguez@atheros.com>

This is a port of:
commit SHA1 6158425be398936af1fd04451f78ffad01529cb0
for 2.6.27

All 802.11n PCI devices (Cardbus, PCI, mini-PCI) require
serialization of IO when on non-uniprocessor systems. PCI
express devices not not require this.

This should fix our only last standing open ath9k kernel.org
bugzilla bug report:

http://bugzilla.kernel.org/show_bug.cgi?id=12110

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/net/wireless/ath9k/ath9k.h |    4 ++--
 drivers/net/wireless/ath9k/core.c  |    1 +
 drivers/net/wireless/ath9k/core.h  |   33 +++++++++++++++++++++++++++++++++
 drivers/net/wireless/ath9k/hw.c    |   19 +++++++++++++++++++
 4 files changed, 55 insertions(+), 2 deletions(-)

--- a/drivers/net/wireless/ath9k/ath9k.h
+++ b/drivers/net/wireless/ath9k/ath9k.h
@@ -591,8 +591,8 @@ struct ath9k_country_entry {
 	u8 iso[3];
 };
 
-#define REG_WRITE(_ah, _reg, _val) iowrite32(_val, _ah->ah_sh + _reg)
-#define REG_READ(_ah, _reg) ioread32(_ah->ah_sh + _reg)
+#define REG_WRITE(_ah, _reg, _val) ath9k_iowrite32((_ah), (_reg), (_val))
+#define REG_READ(_ah, _reg) ath9k_ioread32((_ah), (_reg))
 
 #define SM(_v, _f)  (((_v) << _f##_S) & _f)
 #define MS(_v, _f)  (((_v) & _f) >> _f##_S)
--- a/drivers/net/wireless/ath9k/core.c
+++ b/drivers/net/wireless/ath9k/core.c
@@ -1120,6 +1120,7 @@ int ath_init(u16 devid, struct ath_softc
 	sc->sc_cachelsz = csz << 2;	/* convert to bytes */
 
 	spin_lock_init(&sc->sc_resetlock);
+	spin_lock_init(&sc->sc_serial_rw);
 
 	ah = ath9k_hw_attach(devid, sc, sc->mem, &status);
 	if (ah == NULL) {
--- a/drivers/net/wireless/ath9k/core.h
+++ b/drivers/net/wireless/ath9k/core.h
@@ -1022,6 +1022,7 @@ struct ath_softc {
 	spinlock_t sc_rxbuflock;
 	spinlock_t sc_txbuflock;
 	spinlock_t sc_resetlock;
+	spinlock_t sc_serial_rw;
 	spinlock_t node_lock;
 };
 
@@ -1069,4 +1070,36 @@ void ath_skb_unmap_single(struct ath_sof
 void ath_mcast_merge(struct ath_softc *sc, u32 mfilt[2]);
 enum ath9k_ht_macmode ath_cwm_macmode(struct ath_softc *sc);
 
+/*
+ * Read and write, they both share the same lock. We do this to serialize
+ * reads and writes on Atheros 802.11n PCI devices only. This is required
+ * as the FIFO on these devices can only accept sanely 2 requests. After
+ * that the device goes bananas. Serializing the reads/writes prevents this
+ * from happening.
+ */
+
+static inline void ath9k_iowrite32(struct ath_hal *ah, u32 reg_offset, u32 val)
+{
+	if (ah->ah_config.serialize_regmode == SER_REG_MODE_ON) {
+		unsigned long flags;
+		spin_lock_irqsave(&ah->ah_sc->sc_serial_rw, flags);
+		iowrite32(val, ah->ah_sc->mem + reg_offset);
+		spin_unlock_irqrestore(&ah->ah_sc->sc_serial_rw, flags);
+	} else
+		iowrite32(val, ah->ah_sc->mem + reg_offset);
+}
+
+static inline unsigned int ath9k_ioread32(struct ath_hal *ah, u32 reg_offset)
+{
+	u32 val;
+	if (ah->ah_config.serialize_regmode == SER_REG_MODE_ON) {
+		unsigned long flags;
+		spin_lock_irqsave(&ah->ah_sc->sc_serial_rw, flags);
+		val = ioread32(ah->ah_sc->mem + reg_offset);
+		spin_unlock_irqrestore(&ah->ah_sc->sc_serial_rw, flags);
+	} else
+		val = ioread32(ah->ah_sc->mem + reg_offset);
+	return val;
+}
+
 #endif /* CORE_H */
--- a/drivers/net/wireless/ath9k/hw.c
+++ b/drivers/net/wireless/ath9k/hw.c
@@ -369,6 +369,25 @@ static void ath9k_hw_set_defaults(struct
 	}
 
 	ah->ah_config.intr_mitigation = 0;
+
+	/*
+	 * We need this for PCI devices only (Cardbus, PCI, miniPCI)
+	 * _and_ if on non-uniprocessor systems (Multiprocessor/HT).
+	 * This means we use it for all AR5416 devices, and the few
+	 * minor PCI AR9280 devices out there.
+	 *
+	 * Serialization is required because these devices do not handle
+	 * well the case of two concurrent reads/writes due to the latency
+	 * involved. During one read/write another read/write can be issued
+	 * on another CPU while the previous read/write may still be working
+	 * on our hardware, if we hit this case the hardware poops in a loop.
+	 * We prevent this by serializing reads and writes.
+	 *
+	 * This issue is not present on PCI-Express devices or pre-AR5416
+	 * devices (legacy, 802.11abg).
+	 */
+       if (num_possible_cpus() > 1)
+               ah->ah_config.serialize_regmode = SER_REG_MODE_AUTO;
 }
 
 static inline void ath9k_hw_override_ini(struct ath_hal *ah,

[patch 48/58] ath9k: AR9280 PCI devices must serialize IO as well

[Greg KH]

[-- Attachment #1: ath9k-ar9280-pci-devices-must-serialize-io-as-well.patch --]
[-- Type: text/plain, Size: 886 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Luis R. Rodriguez <lrodriguez@atheros.com>

This is a port of:
commit SHA1 5ec905a8df3fa877566ba98298433fbfb3d688cc
for 2.6.27

Signed-off-by: Luis R. Rodriguez <lrodriguez@atheros.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
 drivers/net/wireless/ath9k/hw.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

--- a/drivers/net/wireless/ath9k/hw.c
+++ b/drivers/net/wireless/ath9k/hw.c
@@ -3313,7 +3313,8 @@ static struct ath_hal *ath9k_hw_do_attac
 	}
 
 	if (ah->ah_config.serialize_regmode == SER_REG_MODE_AUTO) {
-		if (ah->ah_macVersion == AR_SREV_VERSION_5416_PCI) {
+		if (ah->ah_macVersion == AR_SREV_VERSION_5416_PCI ||
+		    (AR_SREV_9280(ah) && !ah->ah_isPciExpress)) {
 			ah->ah_config.serialize_regmode =
 				SER_REG_MODE_ON;
 		} else {

[patch 49/58] b44: Use kernel DMA addresses for the kernel DMA API

[Greg KH]

[-- Attachment #1: b44-use-kernel-dma-addresses-for-the-kernel-dma-api.patch --]
[-- Type: text/plain, Size: 1033 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Michael Buesch <mb@bu3sch.de>

commit 37efa239901493694a48f1d6f59f8de17c2c4509 upstream.

We must not use the device DMA addresses for the kernel DMA API, because
device DMA addresses have an additional offset added for the SSB translation.

Use the original dma_addr_t for the sync operation.

Cc: stable@kernel.org
Signed-off-by: Michael Buesch <mb@bu3sch.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/net/b44.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/b44.c
+++ b/drivers/net/b44.c
@@ -750,7 +750,7 @@ static void b44_recycle_rx(struct b44 *b
 					     dest_idx * sizeof(dest_desc),
 					     DMA_BIDIRECTIONAL);
 
-	ssb_dma_sync_single_for_device(bp->sdev, le32_to_cpu(src_desc->addr),
+	ssb_dma_sync_single_for_device(bp->sdev, dest_map->mapping,
 				       RX_PKT_BUF_SZ,
 				       DMA_FROM_DEVICE);
 }

[patch 50/58] crypto: ixp4xx - Fix handling of chained sg buffers

[Greg KH]

[-- Attachment #1: crypto-ixp4xx-fix-handling-of-chained-sg-buffers.patch --]
[-- Type: text/plain, Size: 12235 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Christian Hohnstaedt <chohnstaedt@innominate.com>

commit 0d44dc59b2b434b29aafeae581d06f81efac7c83 upstream.

 - keep dma functions away from chained scatterlists.
   Use the existing scatterlist iteration inside the driver
   to call dma_map_single() for each chunk and avoid dma_map_sg().

Signed-off-by: Christian Hohnstaedt <chohnstaedt@innominate.com>
Tested-By:  Karl Hiramoto <karl@hiramoto.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/crypto/ixp4xx_crypto.c |  184 ++++++++++++++---------------------------
 1 file changed, 64 insertions(+), 120 deletions(-)

--- a/drivers/crypto/ixp4xx_crypto.c
+++ b/drivers/crypto/ixp4xx_crypto.c
@@ -101,6 +101,7 @@ struct buffer_desc {
 	u32 phys_addr;
 	u32 __reserved[4];
 	struct buffer_desc *next;
+	enum dma_data_direction dir;
 };
 
 struct crypt_ctl {
@@ -132,14 +133,10 @@ struct crypt_ctl {
 struct ablk_ctx {
 	struct buffer_desc *src;
 	struct buffer_desc *dst;
-	unsigned src_nents;
-	unsigned dst_nents;
 };
 
 struct aead_ctx {
 	struct buffer_desc *buffer;
-	unsigned short assoc_nents;
-	unsigned short src_nents;
 	struct scatterlist ivlist;
 	/* used when the hmac is not on one sg entry */
 	u8 *hmac_virt;
@@ -312,7 +309,7 @@ static struct crypt_ctl *get_crypt_desc_
 	}
 }
 
-static void free_buf_chain(struct buffer_desc *buf, u32 phys)
+static void free_buf_chain(struct device *dev, struct buffer_desc *buf,u32 phys)
 {
 	while (buf) {
 		struct buffer_desc *buf1;
@@ -320,6 +317,7 @@ static void free_buf_chain(struct buffer
 
 		buf1 = buf->next;
 		phys1 = buf->phys_next;
+		dma_unmap_single(dev, buf->phys_next, buf->buf_len, buf->dir);
 		dma_pool_free(buffer_pool, buf, phys);
 		buf = buf1;
 		phys = phys1;
@@ -348,7 +346,6 @@ static void one_packet(dma_addr_t phys)
 	struct crypt_ctl *crypt;
 	struct ixp_ctx *ctx;
 	int failed;
-	enum dma_data_direction src_direction = DMA_BIDIRECTIONAL;
 
 	failed = phys & 0x1 ? -EBADMSG : 0;
 	phys &= ~0x3;
@@ -358,13 +355,8 @@ static void one_packet(dma_addr_t phys)
 	case CTL_FLAG_PERFORM_AEAD: {
 		struct aead_request *req = crypt->data.aead_req;
 		struct aead_ctx *req_ctx = aead_request_ctx(req);
-		dma_unmap_sg(dev, req->assoc, req_ctx->assoc_nents,
-				DMA_TO_DEVICE);
-		dma_unmap_sg(dev, &req_ctx->ivlist, 1, DMA_BIDIRECTIONAL);
-		dma_unmap_sg(dev, req->src, req_ctx->src_nents,
-				DMA_BIDIRECTIONAL);
 
-		free_buf_chain(req_ctx->buffer, crypt->src_buf);
+		free_buf_chain(dev, req_ctx->buffer, crypt->src_buf);
 		if (req_ctx->hmac_virt) {
 			finish_scattered_hmac(crypt);
 		}
@@ -374,16 +366,11 @@ static void one_packet(dma_addr_t phys)
 	case CTL_FLAG_PERFORM_ABLK: {
 		struct ablkcipher_request *req = crypt->data.ablk_req;
 		struct ablk_ctx *req_ctx = ablkcipher_request_ctx(req);
-		int nents;
+
 		if (req_ctx->dst) {
-			nents = req_ctx->dst_nents;
-			dma_unmap_sg(dev, req->dst, nents, DMA_FROM_DEVICE);
-			free_buf_chain(req_ctx->dst, crypt->dst_buf);
-			src_direction = DMA_TO_DEVICE;
-		}
-		nents = req_ctx->src_nents;
-		dma_unmap_sg(dev, req->src, nents, src_direction);
-		free_buf_chain(req_ctx->src, crypt->src_buf);
+			free_buf_chain(dev, req_ctx->dst, crypt->dst_buf);
+		}
+		free_buf_chain(dev, req_ctx->src, crypt->src_buf);
 		req->base.complete(&req->base, failed);
 		break;
 	}
@@ -748,56 +735,35 @@ static int setup_cipher(struct crypto_tf
 	return 0;
 }
 
-static int count_sg(struct scatterlist *sg, int nbytes)
-{
-	int i;
-	for (i = 0; nbytes > 0; i++, sg = sg_next(sg))
-		nbytes -= sg->length;
-	return i;
-}
-
-static struct buffer_desc *chainup_buffers(struct scatterlist *sg,
-			unsigned nbytes, struct buffer_desc *buf, gfp_t flags)
+static struct buffer_desc *chainup_buffers(struct device *dev,
+		struct scatterlist *sg,	unsigned nbytes,
+		struct buffer_desc *buf, gfp_t flags,
+		enum dma_data_direction dir)
 {
-	int nents = 0;
-
-	while (nbytes > 0) {
+	for (;nbytes > 0; sg = scatterwalk_sg_next(sg)) {
+		unsigned len = min(nbytes, sg->length);
 		struct buffer_desc *next_buf;
 		u32 next_buf_phys;
-		unsigned len = min(nbytes, sg_dma_len(sg));
+		void *ptr;
 
-		nents++;
 		nbytes -= len;
-		if (!buf->phys_addr) {
-			buf->phys_addr = sg_dma_address(sg);
-			buf->buf_len = len;
-			buf->next = NULL;
-			buf->phys_next = 0;
-			goto next;
-		}
-		/* Two consecutive chunks on one page may be handled by the old
-		 * buffer descriptor, increased by the length of the new one
-		 */
-		if (sg_dma_address(sg) == buf->phys_addr + buf->buf_len) {
-			buf->buf_len += len;
-			goto next;
-		}
+		ptr = page_address(sg_page(sg)) + sg->offset;
 		next_buf = dma_pool_alloc(buffer_pool, flags, &next_buf_phys);
-		if (!next_buf)
-			return NULL;
+		if (!next_buf) {
+			buf = NULL;
+			break;
+		}
+		sg_dma_address(sg) = dma_map_single(dev, ptr, len, dir);
 		buf->next = next_buf;
 		buf->phys_next = next_buf_phys;
-
 		buf = next_buf;
-		buf->next = NULL;
-		buf->phys_next = 0;
+
 		buf->phys_addr = sg_dma_address(sg);
 		buf->buf_len = len;
-next:
-		if (nbytes > 0) {
-			sg = sg_next(sg);
-		}
+		buf->dir = dir;
 	}
+	buf->next = NULL;
+	buf->phys_next = 0;
 	return buf;
 }
 
@@ -858,12 +824,12 @@ static int ablk_perform(struct ablkciphe
 	struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req);
 	struct ixp_ctx *ctx = crypto_ablkcipher_ctx(tfm);
 	unsigned ivsize = crypto_ablkcipher_ivsize(tfm);
-	int ret = -ENOMEM;
 	struct ix_sa_dir *dir;
 	struct crypt_ctl *crypt;
-	unsigned int nbytes = req->nbytes, nents;
+	unsigned int nbytes = req->nbytes;
 	enum dma_data_direction src_direction = DMA_BIDIRECTIONAL;
 	struct ablk_ctx *req_ctx = ablkcipher_request_ctx(req);
+	struct buffer_desc src_hook;
 	gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ?
 				GFP_KERNEL : GFP_ATOMIC;
 
@@ -876,7 +842,7 @@ static int ablk_perform(struct ablkciphe
 
 	crypt = get_crypt_desc();
 	if (!crypt)
-		return ret;
+		return -ENOMEM;
 
 	crypt->data.ablk_req = req;
 	crypt->crypto_ctx = dir->npe_ctx_phys;
@@ -889,53 +855,41 @@ static int ablk_perform(struct ablkciphe
 	BUG_ON(ivsize && !req->info);
 	memcpy(crypt->iv, req->info, ivsize);
 	if (req->src != req->dst) {
+		struct buffer_desc dst_hook;
 		crypt->mode |= NPE_OP_NOT_IN_PLACE;
-		nents = count_sg(req->dst, nbytes);
 		/* This was never tested by Intel
 		 * for more than one dst buffer, I think. */
-		BUG_ON(nents != 1);
-		req_ctx->dst_nents = nents;
-		dma_map_sg(dev, req->dst, nents, DMA_FROM_DEVICE);
-		req_ctx->dst = dma_pool_alloc(buffer_pool, flags,&crypt->dst_buf);
-		if (!req_ctx->dst)
-			goto unmap_sg_dest;
-		req_ctx->dst->phys_addr = 0;
-		if (!chainup_buffers(req->dst, nbytes, req_ctx->dst, flags))
+		BUG_ON(req->dst->length < nbytes);
+		req_ctx->dst = NULL;
+		if (!chainup_buffers(dev, req->dst, nbytes, &dst_hook,
+					flags, DMA_FROM_DEVICE))
 			goto free_buf_dest;
 		src_direction = DMA_TO_DEVICE;
+		req_ctx->dst = dst_hook.next;
+		crypt->dst_buf = dst_hook.phys_next;
 	} else {
 		req_ctx->dst = NULL;
-		req_ctx->dst_nents = 0;
 	}
-	nents = count_sg(req->src, nbytes);
-	req_ctx->src_nents = nents;
-	dma_map_sg(dev, req->src, nents, src_direction);
-
-	req_ctx->src = dma_pool_alloc(buffer_pool, flags, &crypt->src_buf);
-	if (!req_ctx->src)
-		goto unmap_sg_src;
-	req_ctx->src->phys_addr = 0;
-	if (!chainup_buffers(req->src, nbytes, req_ctx->src, flags))
+	req_ctx->src = NULL;
+	if (!chainup_buffers(dev, req->src, nbytes, &src_hook,
+				flags, src_direction))
 		goto free_buf_src;
 
+	req_ctx->src = src_hook.next;
+	crypt->src_buf = src_hook.phys_next;
 	crypt->ctl_flags |= CTL_FLAG_PERFORM_ABLK;
 	qmgr_put_entry(SEND_QID, crypt_virt2phys(crypt));
 	BUG_ON(qmgr_stat_overflow(SEND_QID));
 	return -EINPROGRESS;
 
 free_buf_src:
-	free_buf_chain(req_ctx->src, crypt->src_buf);
-unmap_sg_src:
-	dma_unmap_sg(dev, req->src, req_ctx->src_nents, src_direction);
+	free_buf_chain(dev, req_ctx->src, crypt->src_buf);
 free_buf_dest:
 	if (req->src != req->dst) {
-		free_buf_chain(req_ctx->dst, crypt->dst_buf);
-unmap_sg_dest:
-		dma_unmap_sg(dev, req->src, req_ctx->dst_nents,
-			DMA_FROM_DEVICE);
+		free_buf_chain(dev, req_ctx->dst, crypt->dst_buf);
 	}
 	crypt->ctl_flags = CTL_FLAG_UNUSED;
-	return ret;
+	return -ENOMEM;
 }
 
 static int ablk_encrypt(struct ablkcipher_request *req)
@@ -983,7 +937,7 @@ static int hmac_inconsistent(struct scat
 			break;
 
 		offset += sg->length;
-		sg = sg_next(sg);
+		sg = scatterwalk_sg_next(sg);
 	}
 	return (start + nbytes > offset + sg->length);
 }
@@ -995,11 +949,10 @@ static int aead_perform(struct aead_requ
 	struct ixp_ctx *ctx = crypto_aead_ctx(tfm);
 	unsigned ivsize = crypto_aead_ivsize(tfm);
 	unsigned authsize = crypto_aead_authsize(tfm);
-	int ret = -ENOMEM;
 	struct ix_sa_dir *dir;
 	struct crypt_ctl *crypt;
-	unsigned int cryptlen, nents;
-	struct buffer_desc *buf;
+	unsigned int cryptlen;
+	struct buffer_desc *buf, src_hook;
 	struct aead_ctx *req_ctx = aead_request_ctx(req);
 	gfp_t flags = req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP ?
 				GFP_KERNEL : GFP_ATOMIC;
@@ -1020,7 +973,7 @@ static int aead_perform(struct aead_requ
 	}
 	crypt = get_crypt_desc();
 	if (!crypt)
-		return ret;
+		return -ENOMEM;
 
 	crypt->data.aead_req = req;
 	crypt->crypto_ctx = dir->npe_ctx_phys;
@@ -1039,31 +992,27 @@ static int aead_perform(struct aead_requ
 		BUG(); /* -ENOTSUP because of my lazyness */
 	}
 
-	req_ctx->buffer = dma_pool_alloc(buffer_pool, flags, &crypt->src_buf);
-	if (!req_ctx->buffer)
-		goto out;
-	req_ctx->buffer->phys_addr = 0;
 	/* ASSOC data */
-	nents = count_sg(req->assoc, req->assoclen);
-	req_ctx->assoc_nents = nents;
-	dma_map_sg(dev, req->assoc, nents, DMA_TO_DEVICE);
-	buf = chainup_buffers(req->assoc, req->assoclen, req_ctx->buffer,flags);
+	buf = chainup_buffers(dev, req->assoc, req->assoclen, &src_hook,
+		flags, DMA_TO_DEVICE);
+	req_ctx->buffer = src_hook.next;
+	crypt->src_buf = src_hook.phys_next;
 	if (!buf)
-		goto unmap_sg_assoc;
+		goto out;
 	/* IV */
 	sg_init_table(&req_ctx->ivlist, 1);
 	sg_set_buf(&req_ctx->ivlist, iv, ivsize);
-	dma_map_sg(dev, &req_ctx->ivlist, 1, DMA_BIDIRECTIONAL);
-	buf = chainup_buffers(&req_ctx->ivlist, ivsize, buf, flags);
+	buf = chainup_buffers(dev, &req_ctx->ivlist, ivsize, buf, flags,
+			DMA_BIDIRECTIONAL);
 	if (!buf)
-		goto unmap_sg_iv;
+		goto free_chain;
 	if (unlikely(hmac_inconsistent(req->src, cryptlen, authsize))) {
 		/* The 12 hmac bytes are scattered,
 		 * we need to copy them into a safe buffer */
 		req_ctx->hmac_virt = dma_pool_alloc(buffer_pool, flags,
 				&crypt->icv_rev_aes);
 		if (unlikely(!req_ctx->hmac_virt))
-			goto unmap_sg_iv;
+			goto free_chain;
 		if (!encrypt) {
 			scatterwalk_map_and_copy(req_ctx->hmac_virt,
 				req->src, cryptlen, authsize, 0);
@@ -1073,33 +1022,28 @@ static int aead_perform(struct aead_requ
 		req_ctx->hmac_virt = NULL;
 	}
 	/* Crypt */
-	nents = count_sg(req->src, cryptlen + authsize);
-	req_ctx->src_nents = nents;
-	dma_map_sg(dev, req->src, nents, DMA_BIDIRECTIONAL);
-	buf = chainup_buffers(req->src, cryptlen + authsize, buf, flags);
+	buf = chainup_buffers(dev, req->src, cryptlen + authsize, buf, flags,
+			DMA_BIDIRECTIONAL);
 	if (!buf)
-		goto unmap_sg_src;
+		goto free_hmac_virt;
 	if (!req_ctx->hmac_virt) {
 		crypt->icv_rev_aes = buf->phys_addr + buf->buf_len - authsize;
 	}
+
 	crypt->ctl_flags |= CTL_FLAG_PERFORM_AEAD;
 	qmgr_put_entry(SEND_QID, crypt_virt2phys(crypt));
 	BUG_ON(qmgr_stat_overflow(SEND_QID));
 	return -EINPROGRESS;
-unmap_sg_src:
-	dma_unmap_sg(dev, req->src, req_ctx->src_nents, DMA_BIDIRECTIONAL);
+free_hmac_virt:
 	if (req_ctx->hmac_virt) {
 		dma_pool_free(buffer_pool, req_ctx->hmac_virt,
 				crypt->icv_rev_aes);
 	}
-unmap_sg_iv:
-	dma_unmap_sg(dev, &req_ctx->ivlist, 1, DMA_BIDIRECTIONAL);
-unmap_sg_assoc:
-	dma_unmap_sg(dev, req->assoc, req_ctx->assoc_nents, DMA_TO_DEVICE);
-	free_buf_chain(req_ctx->buffer, crypt->src_buf);
+free_chain:
+	free_buf_chain(dev, req_ctx->buffer, crypt->src_buf);
 out:
 	crypt->ctl_flags = CTL_FLAG_UNUSED;
-	return ret;
+	return -ENOMEM;
 }
 
 static int aead_setup(struct crypto_aead *tfm, unsigned int authsize)

[patch 51/58] exit_notify: kill the wrong capable(CAP_KILL) check (CVE-2009-1337)

[Greg KH]

[-- Attachment #1: exit_notify-kill-the-wrong-capable-check.patch --]
[-- Type: text/plain, Size: 1191 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Oleg Nesterov <oleg@redhat.com>

CVE-2009-1337

commit 432870dab85a2f69dc417022646cb9a70acf7f94 upstream.

The CAP_KILL check in exit_notify() looks just wrong, kill it.

Whatever logic we have to reset ->exit_signal, the malicious user
can bypass it if it execs the setuid application before exiting.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Serge Hallyn <serue@us.ibm.com>
Acked-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 kernel/exit.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/kernel/exit.c
+++ b/kernel/exit.c
@@ -938,8 +938,7 @@ static void exit_notify(struct task_stru
 	 */
 	if (tsk->exit_signal != SIGCHLD && !task_detached(tsk) &&
 	    (tsk->parent_exec_id != tsk->real_parent->self_exec_id ||
-	     tsk->self_exec_id != tsk->parent_exec_id) &&
-	    !capable(CAP_KILL))
+	     tsk->self_exec_id != tsk->parent_exec_id))
 		tsk->exit_signal = SIGCHLD;
 
 	signal = tracehook_notify_death(tsk, &cookie, group_dead);

[patch 52/58] fix ptrace slowness

[Greg KH]

[-- Attachment #1: fix-ptrace-slowness.patch --]
[-- Type: text/plain, Size: 1830 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Miklos Szeredi <mszeredi@suse.cz>

commit 53da1d9456fe7f87a920a78fdbdcf1225d197cb7 upstream.

This patch fixes bug #12208:

  Bug-Entry       : http://bugzilla.kernel.org/show_bug.cgi?id=12208
  Subject         : uml is very slow on 2.6.28 host

This turned out to be not a scheduler regression, but an already
existing problem in ptrace being triggered by subtle scheduler
changes.

The problem is this:

 - task A is ptracing task B
 - task B stops on a trace event
 - task A is woken up and preempts task B
 - task A calls ptrace on task B, which does ptrace_check_attach()
 - this calls wait_task_inactive(), which sees that task B is still on the runq
 - task A goes to sleep for a jiffy
 - ...

Since UML does lots of the above sequences, those jiffies quickly add
up to make it slow as hell.

This patch solves this by not rescheduling in read_unlock() after
ptrace_stop() has woken up the tracer.

Thanks to Oleg Nesterov and Ingo Molnar for the feedback.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
CC: stable@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 kernel/signal.c |    8 ++++++++
 1 file changed, 8 insertions(+)

--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -1549,7 +1549,15 @@ static void ptrace_stop(int exit_code, i
 	read_lock(&tasklist_lock);
 	if (may_ptrace_stop()) {
 		do_notify_parent_cldstop(current, CLD_TRAPPED);
+		/*
+		 * Don't want to allow preemption here, because
+		 * sys_ptrace() needs this task to be inactive.
+		 *
+		 * XXX: implement read_unlock_no_resched().
+		 */
+		preempt_disable();
 		read_unlock(&tasklist_lock);
+		preempt_enable_no_resched();
 		schedule();
 	} else {
 		/*

[patch 53/58] fs core fixes

[Greg KH]

[-- Attachment #1: fs-core-fixes.patch --]
[-- Type: text/plain, Size: 5208 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Hugh Dickins <hugh@veritas.com>

Please add the following 4 commits to 2.6.27-stable and 2.6.28-stable.
However, there has been a lot of change here between 2.6.28 and 2.6.29:
in particular, fs/exec.c's unsafe_exec() grew into the more complicated
check_unsafe_exec().  So applying the original patches gives too many
rejects: at the bottom is the diffstat and the combined patch required.

1
Commit: 53e9309e01277ec99c38e84e0ca16921287cf470
Author: Hugh Dickins <hugh@veritas.com>
Date: Sat, 28 Mar 2009 23:16:03 +0000 (+0000)
Subject: [patch 53/58] compat_do_execve should unshare_files

2
Commit: e426b64c412aaa3e9eb3e4b261dc5be0d5a83e78
Author: Hugh Dickins <hugh@veritas.com>
Date: Sat, 28 Mar 2009 23:20:19 +0000 (+0000)
Subject: [patch 53/58] fix setuid sometimes doesn't

3
Commit: 7c2c7d993044cddc5010f6f429b100c63bc7dffb
Author: Hugh Dickins <hugh@veritas.com>
Date: Sat, 28 Mar 2009 23:21:27 +0000 (+0000)
Subject: [patch 53/58] fix setuid sometimes wouldn't

4
Commit: f1191b50ec11c8e2ca766d6d99eb5bb9d2c084a3
Author: Al Viro <viro@zeniv.linux.org.uk>
Date: Mon, 30 Mar 2009 11:35:18 +0000 (-0400)
Subject: [patch 53/58] check_unsafe_exec() doesn't care about signal handlers sharing

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 fs/compat.c    |   12 +++++++++++-
 fs/exec.c      |    4 +---
 fs/proc/base.c |   50 ++++++++++++++++----------------------------------
 3 files changed, 28 insertions(+), 38 deletions(-)

--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1353,12 +1353,17 @@ int compat_do_execve(char * filename,
 {
 	struct linux_binprm *bprm;
 	struct file *file;
+	struct files_struct *displaced;
 	int retval;
 
+	retval = unshare_files(&displaced);
+	if (retval)
+		goto out_ret;
+
 	retval = -ENOMEM;
 	bprm = kzalloc(sizeof(*bprm), GFP_KERNEL);
 	if (!bprm)
-		goto out_ret;
+		goto out_files;
 
 	file = open_exec(filename);
 	retval = PTR_ERR(file);
@@ -1410,6 +1415,8 @@ int compat_do_execve(char * filename,
 		security_bprm_free(bprm);
 		acct_update_integrals(current);
 		free_bprm(bprm);
+		if (displaced)
+			put_files_struct(displaced);
 		return retval;
 	}
 
@@ -1430,6 +1437,9 @@ out_file:
 out_kfree:
 	free_bprm(bprm);
 
+out_files:
+	if (displaced)
+		reset_files_struct(displaced);
 out_ret:
 	return retval;
 }
--- a/fs/exec.c
+++ b/fs/exec.c
@@ -1089,9 +1089,7 @@ static int unsafe_exec(struct task_struc
 {
 	int unsafe = tracehook_unsafe_exec(p);
 
-	if (atomic_read(&p->fs->count) > 1 ||
-	    atomic_read(&p->files->count) > 1 ||
-	    atomic_read(&p->sighand->count) > 1)
+	if (atomic_read(&p->fs->count) > 1)
 		unsafe |= LSM_UNSAFE_SHARE;
 
 	return unsafe;
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -151,15 +151,22 @@ static unsigned int pid_entry_count_dirs
 int maps_protect;
 EXPORT_SYMBOL(maps_protect);
 
-static struct fs_struct *get_fs_struct(struct task_struct *task)
+static int get_fs_path(struct task_struct *task, struct path *path, bool root)
 {
 	struct fs_struct *fs;
+	int result = -ENOENT;
+
 	task_lock(task);
 	fs = task->fs;
-	if(fs)
-		atomic_inc(&fs->count);
+	if (fs) {
+		read_lock(&fs->lock);
+		*path = root ? fs->root : fs->pwd;
+		path_get(path);
+		read_unlock(&fs->lock);
+		result = 0;
+	}
 	task_unlock(task);
-	return fs;
+	return result;
 }
 
 static int get_nr_threads(struct task_struct *tsk)
@@ -178,42 +185,24 @@ static int get_nr_threads(struct task_st
 static int proc_cwd_link(struct inode *inode, struct path *path)
 {
 	struct task_struct *task = get_proc_task(inode);
-	struct fs_struct *fs = NULL;
 	int result = -ENOENT;
 
 	if (task) {
-		fs = get_fs_struct(task);
+		result = get_fs_path(task, path, 0);
 		put_task_struct(task);
 	}
-	if (fs) {
-		read_lock(&fs->lock);
-		*path = fs->pwd;
-		path_get(&fs->pwd);
-		read_unlock(&fs->lock);
-		result = 0;
-		put_fs_struct(fs);
-	}
 	return result;
 }
 
 static int proc_root_link(struct inode *inode, struct path *path)
 {
 	struct task_struct *task = get_proc_task(inode);
-	struct fs_struct *fs = NULL;
 	int result = -ENOENT;
 
 	if (task) {
-		fs = get_fs_struct(task);
+		result = get_fs_path(task, path, 1);
 		put_task_struct(task);
 	}
-	if (fs) {
-		read_lock(&fs->lock);
-		*path = fs->root;
-		path_get(&fs->root);
-		read_unlock(&fs->lock);
-		result = 0;
-		put_fs_struct(fs);
-	}
 	return result;
 }
 
@@ -575,7 +564,6 @@ static int mounts_open_common(struct ino
 	struct task_struct *task = get_proc_task(inode);
 	struct nsproxy *nsp;
 	struct mnt_namespace *ns = NULL;
-	struct fs_struct *fs = NULL;
 	struct path root;
 	struct proc_mounts *p;
 	int ret = -EINVAL;
@@ -589,22 +577,16 @@ static int mounts_open_common(struct ino
 				get_mnt_ns(ns);
 		}
 		rcu_read_unlock();
-		if (ns)
-			fs = get_fs_struct(task);
+		if (ns && get_fs_path(task, &root, 1) == 0)
+			ret = 0;
 		put_task_struct(task);
 	}
 
 	if (!ns)
 		goto err;
-	if (!fs)
+	if (ret)
 		goto err_put_ns;
 
-	read_lock(&fs->lock);
-	root = fs->root;
-	path_get(&root);
-	read_unlock(&fs->lock);
-	put_fs_struct(fs);
-
 	ret = -ENOMEM;
 	p = kmalloc(sizeof(struct proc_mounts), GFP_KERNEL);
 	if (!p)

[patch 54/58] PCI: fix incorrect mask of PM No_Soft_Reset bit

[Greg KH]

[-- Attachment #1: pci-fix-incorrect-mask-of-pm-no_soft_reset-bit.patch --]
[-- Type: text/plain, Size: 1106 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Yu Zhao <yu.zhao@intel.com>

commit 998dd7c719f62dcfa91d7bf7f4eb9c160e03d817 upstream.

Reviewed-by: Matthew Wilcox <matthew@wil.cx>
Signed-off-by: Yu Zhao <yu.zhao@intel.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 include/linux/pci_regs.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/include/linux/pci_regs.h
+++ b/include/linux/pci_regs.h
@@ -234,7 +234,7 @@
 #define  PCI_PM_CAP_PME_SHIFT	11	/* Start of the PME Mask in PMC */
 #define PCI_PM_CTRL		4	/* PM control and status register */
 #define  PCI_PM_CTRL_STATE_MASK	0x0003	/* Current power state (D0 to D3) */
-#define  PCI_PM_CTRL_NO_SOFT_RESET	0x0004	/* No reset for D3hot->D0 */
+#define  PCI_PM_CTRL_NO_SOFT_RESET	0x0008	/* No reset for D3hot->D0 */
 #define  PCI_PM_CTRL_PME_ENABLE	0x0100	/* PME pin enable */
 #define  PCI_PM_CTRL_DATA_SEL_MASK	0x1e00	/* Data select (??) */
 #define  PCI_PM_CTRL_DATA_SCALE_MASK	0x6000	/* Data scale (??) */

[patch 55/58] thinkpad-acpi: fix LED blinking through timer trigger

[Greg KH]

[-- Attachment #1: thinkpad-acpi-fix-led-blinking-through-timer-trigger.patch --]
[-- Type: text/plain, Size: 3925 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Henrique de Moraes Holschuh <hmh@hmh.eng.br>

commit 75bd3bf2ade9d548be0d2bde60b5ee0fdce0b127 upstream.

The set_blink hook code in the LED subdriver would never manage to get
a LED to blink, and instead it would just turn it on.  The consequence
of this is that the "timer" trigger would not cause the LED to blink
if given default parameters.

This problem exists since 2.6.26-rc1.

To fix it, switch the deferred LED work handling to use the
thinkpad-acpi-specific LED status (off/on/blink) directly.

This also makes the code easier to read, and to extend later.

Signed-off-by: Henrique de Moraes Holschuh <hmh@hmh.eng.br>
Cc: stable@kernel.org
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/misc/thinkpad_acpi.c |   41 +++++++++++++++++++----------------------
 1 file changed, 19 insertions(+), 22 deletions(-)

--- a/drivers/misc/thinkpad_acpi.c
+++ b/drivers/misc/thinkpad_acpi.c
@@ -282,11 +282,17 @@ static u32 dbg_level;
 
 static struct workqueue_struct *tpacpi_wq;
 
+enum led_status_t {
+	TPACPI_LED_OFF = 0,
+	TPACPI_LED_ON,
+	TPACPI_LED_BLINK,
+};
+
 /* Special LED class that can defer work */
 struct tpacpi_led_classdev {
 	struct led_classdev led_classdev;
 	struct work_struct work;
-	enum led_brightness new_brightness;
+	enum led_status_t new_state;
 	unsigned int led;
 };
 
@@ -3478,7 +3484,7 @@ static void light_set_status_worker(stru
 			container_of(work, struct tpacpi_led_classdev, work);
 
 	if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
-		light_set_status((data->new_brightness != LED_OFF));
+		light_set_status((data->new_state != TPACPI_LED_OFF));
 }
 
 static void light_sysfs_set(struct led_classdev *led_cdev,
@@ -3488,7 +3494,8 @@ static void light_sysfs_set(struct led_c
 		container_of(led_cdev,
 			     struct tpacpi_led_classdev,
 			     led_classdev);
-	data->new_brightness = brightness;
+	data->new_state = (brightness != LED_OFF) ?
+				TPACPI_LED_ON : TPACPI_LED_OFF;
 	queue_work(tpacpi_wq, &data->work);
 }
 
@@ -3995,12 +4002,6 @@ enum {	/* For TPACPI_LED_OLD */
 	TPACPI_LED_EC_HLMS = 0x0e,	/* EC reg to select led to command */
 };
 
-enum led_status_t {
-	TPACPI_LED_OFF = 0,
-	TPACPI_LED_ON,
-	TPACPI_LED_BLINK,
-};
-
 static enum led_access_mode led_supported;
 
 TPACPI_HANDLE(led, ec, "SLED",	/* 570 */
@@ -4094,23 +4095,13 @@ static int led_set_status(const unsigned
 	return rc;
 }
 
-static void led_sysfs_set_status(unsigned int led,
-				 enum led_brightness brightness)
-{
-	led_set_status(led,
-			(brightness == LED_OFF) ?
-			TPACPI_LED_OFF :
-			(tpacpi_led_state_cache[led] == TPACPI_LED_BLINK) ?
-				TPACPI_LED_BLINK : TPACPI_LED_ON);
-}
-
 static void led_set_status_worker(struct work_struct *work)
 {
 	struct tpacpi_led_classdev *data =
 		container_of(work, struct tpacpi_led_classdev, work);
 
 	if (likely(tpacpi_lifecycle == TPACPI_LIFE_RUNNING))
-		led_sysfs_set_status(data->led, data->new_brightness);
+		led_set_status(data->led, data->new_state);
 }
 
 static void led_sysfs_set(struct led_classdev *led_cdev,
@@ -4119,7 +4110,13 @@ static void led_sysfs_set(struct led_cla
 	struct tpacpi_led_classdev *data = container_of(led_cdev,
 			     struct tpacpi_led_classdev, led_classdev);
 
-	data->new_brightness = brightness;
+	if (brightness == LED_OFF)
+		data->new_state = TPACPI_LED_OFF;
+	else if (tpacpi_led_state_cache[data->led] != TPACPI_LED_BLINK)
+		data->new_state = TPACPI_LED_ON;
+	else
+		data->new_state = TPACPI_LED_BLINK;
+
 	queue_work(tpacpi_wq, &data->work);
 }
 
@@ -4137,7 +4134,7 @@ static int led_sysfs_blink_set(struct le
 	} else if ((*delay_on != 500) || (*delay_off != 500))
 		return -EINVAL;
 
-	data->new_brightness = TPACPI_LED_BLINK;
+	data->new_state = TPACPI_LED_BLINK;
 	queue_work(tpacpi_wq, &data->work);
 
 	return 0;

[patch 56/58] ACPI: EC: Add some basic check for ECDT data

[Greg KH]

[-- Attachment #1: acpi-ec-add-some-basic-check-for-ecdt-data.patch --]
[-- Type: text/plain, Size: 2764 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Alexey Starikovskiy <astarikovskiy@suse.de>

commit c5279dee26c0e8d7c4200993bfc4b540d2469598 upstream.

One more ASUS comes with empty ECDT, add a guard for it...

http://bugzilla.kernel.org/show_bug.cgi?id=11880

Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/acpi/ec.c |   43 ++++++++++++++++++++++---------------------
 1 file changed, 22 insertions(+), 21 deletions(-)

--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -968,7 +968,6 @@ static const struct acpi_device_id ec_de
 
 int __init acpi_ec_ecdt_probe(void)
 {
-	int ret;
 	acpi_status status;
 	struct acpi_table_ecdt *ecdt_ptr;
 
@@ -996,30 +995,32 @@ int __init acpi_ec_ecdt_probe(void)
 		boot_ec->gpe = ecdt_ptr->gpe;
 		boot_ec->handle = ACPI_ROOT_OBJECT;
 		acpi_get_handle(ACPI_ROOT_OBJECT, ecdt_ptr->id, &boot_ec->handle);
-	} else {
-		/* This workaround is needed only on some broken machines,
-		 * which require early EC, but fail to provide ECDT */
-		acpi_handle x;
-		printk(KERN_DEBUG PREFIX "Look up EC in DSDT\n");
-		status = acpi_get_devices(ec_device_ids[0].id, ec_parse_device,
-						boot_ec, NULL);
-		/* Check that acpi_get_devices actually find something */
-		if (ACPI_FAILURE(status) || !boot_ec->handle)
-			goto error;
-		/* We really need to limit this workaround, the only ASUS,
-		 * which needs it, has fake EC._INI method, so use it as flag.
-		 * Keep boot_ec struct as it will be needed soon.
-		 */
-		if (ACPI_FAILURE(acpi_get_handle(boot_ec->handle, "_INI", &x)))
-			return -ENODEV;
+		/* Add some basic check against completely broken table */
+		if (boot_ec->data_addr != boot_ec->command_addr)
+			goto install;
+	/* fall through */
 	}
-
-	ret = ec_install_handlers(boot_ec);
-	if (!ret) {
+	/* This workaround is needed only on some broken machines,
+	 * which require early EC, but fail to provide ECDT */
+	acpi_handle x;
+	printk(KERN_DEBUG PREFIX "Look up EC in DSDT\n");
+	status = acpi_get_devices(ec_device_ids[0].id, ec_parse_device,
+					boot_ec, NULL);
+	/* Check that acpi_get_devices actually find something */
+	if (ACPI_FAILURE(status) || !boot_ec->handle)
+		goto error;
+	/* We really need to limit this workaround, the only ASUS,
+	 * which needs it, has fake EC._INI method, so use it as flag.
+	 * Keep boot_ec struct as it will be needed soon.
+	 */
+	if (ACPI_FAILURE(acpi_get_handle(boot_ec->handle, "_INI", &x)))
+		return -ENODEV;
+install:
+	if (!ec_install_handlers(boot_ec)) {
 		first_ec = boot_ec;
 		return 0;
 	}
-      error:
+error:
 	kfree(boot_ec);
 	boot_ec = NULL;
 	return -ENODEV;

[patch 57/58] ACPI: EC: fix compilation warning

[Greg KH]

[-- Attachment #1: acpi-ec-fix-compilation-warning.patch --]
[-- Type: text/plain, Size: 1711 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Hannes Eder <hannes@hanneseder.net>

commit 3e54048691bce3f323fd5460695273be379803b9 upstream.

Fix the warning introduced in commit c5279dee26c0e8d7c4200993bfc4b540d2469598,
and give the dummy variable a more verbose name.

  drivers/acpi/ec.c: In function 'acpi_ec_ecdt_probe':
  drivers/acpi/ec.c:1015: warning: ISO C90 forbids mixed declarations and code

Signed-off-by: Hannes Eder <hannes@hanneseder.net>
Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 drivers/acpi/ec.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/acpi/ec.c
+++ b/drivers/acpi/ec.c
@@ -970,6 +970,7 @@ int __init acpi_ec_ecdt_probe(void)
 {
 	acpi_status status;
 	struct acpi_table_ecdt *ecdt_ptr;
+	acpi_handle dummy;
 
 	boot_ec = make_acpi_ec();
 	if (!boot_ec)
@@ -1002,7 +1003,6 @@ int __init acpi_ec_ecdt_probe(void)
 	}
 	/* This workaround is needed only on some broken machines,
 	 * which require early EC, but fail to provide ECDT */
-	acpi_handle x;
 	printk(KERN_DEBUG PREFIX "Look up EC in DSDT\n");
 	status = acpi_get_devices(ec_device_ids[0].id, ec_parse_device,
 					boot_ec, NULL);
@@ -1013,7 +1013,7 @@ int __init acpi_ec_ecdt_probe(void)
 	 * which needs it, has fake EC._INI method, so use it as flag.
 	 * Keep boot_ec struct as it will be needed soon.
 	 */
-	if (ACPI_FAILURE(acpi_get_handle(boot_ec->handle, "_INI", &x)))
+	if (ACPI_FAILURE(acpi_get_handle(boot_ec->handle, "_INI", &dummy)))
 		return -ENODEV;
 install:
 	if (!ec_install_handlers(boot_ec)) {

[patch 58/58] unreached code in selinux_ip_postroute_iptables_compat() (CVE-2009-1184)

[Greg KH]

[-- Attachment #1: unreached-code-in-selinux_ip_postroute_iptables_compat.patch --]
[-- Type: text/plain, Size: 931 bytes --]

2.6.27-stable review patch.  If anyone has any objections, please let us know.

------------------

From: Eugene Teo <eteo@redhat.com>

Not upstream in 2.6.30, as the function was removed there, making this a
non-issue.

Node and port send checks can skip in the compat_net=1 case. This bug
was introduced in commit effad8d.

Signed-off-by: Eugene Teo <eugeneteo@kernel.sg>
Reported-by: Dan Carpenter <error27@gmail.com>
Acked-by: James Morris <jmorris@namei.org>
Acked-by: Paul Moore <paul.moore@hp.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
 security/selinux/hooks.c |    1 +
 1 file changed, 1 insertion(+)

--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -4467,6 +4467,7 @@ static int selinux_ip_postroute_iptables
 	if (err)
 		return err;
 	err = avc_has_perm(sk_sid, if_sid, SECCLASS_NETIF, netif_perm, ad);
+	if (err)
 		return err;
 
 	err = sel_netnode_sid(addrp, family, &node_sid);

[patch 00/58] 2.6.27-stable review

[Greg KH]

This is the start of the stable review cycle for the 2.6.27.22 release.
There are 58 patches in this series, all will be posted as a response to
this one.  If anyone has any issues with these being applied, please let
us know.  If anyone is a maintainer of the proper subsystem, and wants
to add a Signed-off-by: line to the patch, please respond with it.

These patches are sent out with a number of different people on the Cc:
line.  If you wish to be a reviewer, please email stable@kernel.org to
add your name to the list.  If you want to be off the reviewer list,
also email us.

Responses should be made by Friday, May 1, 20:00:00 UTC.  Anything
received after that time might be too late.

The whole patch series can be found in one patch at:
	kernel.org/pub/linux/kernel/v2.6/stable-review/patch-2.6.27.22-rc1.gz
and the diffstat can be found below.


thanks,

greg k-h


 Makefile                               |    2 +-
 arch/powerpc/include/asm/futex.h       |   12 +-
 arch/powerpc/include/asm/processor.h   |   19 ++++
 arch/powerpc/kernel/signal.c           |    4 +-
 arch/powerpc/kernel/signal.h           |    2 +-
 arch/powerpc/kernel/signal_32.c        |    4 +-
 arch/powerpc/kernel/signal_64.c        |    2 +-
 arch/x86/boot/memory.c                 |    7 +-
 arch/x86/kernel/cpu/mtrr/generic.c     |   51 +++++----
 arch/x86/pci/i386.c                    |    3 +
 drivers/acpi/ec.c                      |   43 ++++----
 drivers/ata/pata_hpt37x.c              |   22 +----
 drivers/char/agp/generic.c             |    2 +-
 drivers/char/raw.c                     |    1 +
 drivers/crypto/ixp4xx_crypto.c         |  182 +++++++++++---------------------
 drivers/ide/pci/hpt366.c               |    4 +-
 drivers/isdn/gigaset/bas-gigaset.c     |   16 +++-
 drivers/misc/thinkpad_acpi.c           |   41 ++++----
 drivers/net/b44.c                      |    2 +-
 drivers/net/bonding/bond_main.c        |   25 ++++-
 drivers/net/bonding/bonding.h          |    6 +
 drivers/net/r8169.c                    |  106 +++++++++++--------
 drivers/net/wireless/ath9k/ath9k.h     |    4 +-
 drivers/net/wireless/ath9k/core.c      |    1 +
 drivers/net/wireless/ath9k/core.h      |   33 ++++++
 drivers/net/wireless/ath9k/hw.c        |   22 ++++-
 drivers/net/wireless/b43/xmit.c        |    2 +-
 drivers/scsi/libiscsi.c                |    9 +-
 drivers/usb/class/cdc-wdm.c            |    2 +-
 drivers/usb/gadget/f_rndis.c           |    2 +-
 drivers/usb/gadget/u_ether.c           |    8 +--
 drivers/usb/host/ehci-q.c              |   32 ++++++
 drivers/usb/host/ehci.h                |    3 +
 drivers/usb/serial/ftdi_sio.c          |    1 +
 drivers/usb/serial/ftdi_sio.h          |    7 ++
 drivers/usb/storage/cypress_atacb.c    |   15 ++--
 drivers/usb/storage/scsiglue.c         |    6 +
 drivers/usb/storage/unusual_devs.h     |    6 +-
 fs/buffer.c                            |    2 +-
 fs/cifs/CHANGES                        |    3 +
 fs/cifs/cifssmb.c                      |    6 +-
 fs/cifs/connect.c                      |    2 +-
 fs/compat.c                            |   12 ++-
 fs/dquot.c                             |    2 +-
 fs/drop_caches.c                       |    2 +-
 fs/exec.c                              |    4 +-
 fs/fs-writeback.c                      |    3 +-
 fs/hugetlbfs/inode.c                   |    3 +-
 fs/ocfs2/file.c                        |    8 +-
 fs/proc/base.c                         |   50 +++------
 fs/splice.c                            |   25 ++++-
 include/linux/capability.h             |   23 ++++-
 include/linux/pci_regs.h               |    2 +-
 include/linux/sched.h                  |    3 +-
 kernel/exit.c                          |    3 +-
 kernel/kprobes.c                       |    4 +-
 kernel/signal.c                        |    8 ++
 mm/filemap_xip.c                       |    4 +-
 mm/mmap.c                              |    3 +
 net/bridge/br_if.c                     |    1 -
 net/ipv4/netfilter/arp_tables.c        |    4 +-
 net/ipv4/netfilter/ip_tables.c         |    4 +-
 net/ipv6/inet6_hashtables.c            |    4 +-
 net/ipv6/ip6_input.c                   |    4 +-
 net/ipv6/netfilter/ip6_tables.c        |    4 +-
 net/netfilter/nf_conntrack_proto_tcp.c |    3 +-
 net/netrom/af_netrom.c                 |    8 ++-
 net/rose/af_rose.c                     |    4 +
 net/sctp/endpointola.c                 |    3 +-
 net/x25/af_x25.c                       |    6 +
 security/selinux/hooks.c               |    1 +
 security/smack/smack_lsm.c             |    4 +-
 sound/pci/hda/patch_analog.c           |    2 +-
 73 files changed, 550 insertions(+), 383 deletions(-)