From: Greg KH <gregkh@suse.de>
To: linux-kernel@vger.kernel.org, stable@kernel.org
Cc: Justin Forbes <jmforbes@linuxtx.org>,
Zwane Mwaikambo <zwane@arm.linux.org.uk>,
"Theodore Ts'o" <tytso@mit.edu>,
Randy Dunlap <rdunlap@xenotime.net>,
Dave Jones <davej@redhat.com>,
Chuck Wolber <chuckw@quantumlinux.com>,
Chris Wedgwood <reviews@ml.cw.f00f.org>,
Michael Krufky <mkrufky@linuxtv.org>,
Chuck Ebbert <cebbert@redhat.com>,
torvalds@linux-foundation.org, akpm@linux-foundation.org,
alan@lxorguk.ukuu.org.uk, James.Bottomley@SteelEye.com,
Douglas Gilbert <dougg@torque.net>
Subject: [patch 13/20] Fix bug 7994 sleeping function called from invalid context
Date: Fri, 9 Mar 2007 22:18:10 -0800 [thread overview]
Message-ID: <20070310061810.GN31412@kroah.com> (raw)
In-Reply-To: <20070310061603.GA31412@kroah.com>
[-- Attachment #1: fix-bug-7994-sleeping-function-called-from-invalid-context.patch --]
[-- Type: text/plain, Size: 2152 bytes --]
-stable review patch. If anyone has any objections, please let us know.
------------------
From: Douglas Gilbert <dougg@torque.net>
- addresses the reported bug (with GFP_KERNEL -> GFP_ATOMIC)
- improves error checking, and
- is a subset of the changes to scsi_debug in lk 2.6.21-rc*
Compiled and lightly tested (in lk 2.6.21-rc2 environment).
Signed-off-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/scsi/scsi_debug.c | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
--- a/drivers/scsi/scsi_debug.c
+++ b/drivers/scsi/scsi_debug.c
@@ -954,7 +954,9 @@ static int resp_inquiry(struct scsi_cmnd
int alloc_len, n, ret;
alloc_len = (cmd[3] << 8) + cmd[4];
- arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_KERNEL);
+ arr = kzalloc(SDEBUG_MAX_INQ_ARR_SZ, GFP_ATOMIC);
+ if (! arr)
+ return DID_REQUEUE << 16;
if (devip->wlun)
pq_pdt = 0x1e; /* present, wlun */
else if (scsi_debug_no_lun_0 && (0 == devip->lun))
@@ -1217,7 +1219,9 @@ static int resp_report_tgtpgs(struct scs
alen = ((cmd[6] << 24) + (cmd[7] << 16) + (cmd[8] << 8)
+ cmd[9]);
- arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_KERNEL);
+ arr = kzalloc(SDEBUG_MAX_TGTPGS_ARR_SZ, GFP_ATOMIC);
+ if (! arr)
+ return DID_REQUEUE << 16;
/*
* EVPD page 0x88 states we have two ports, one
* real and a fake port with no device connected.
@@ -1996,6 +2000,8 @@ static int scsi_debug_slave_configure(st
if (sdp->host->max_cmd_len != SCSI_DEBUG_MAX_CMD_LEN)
sdp->host->max_cmd_len = SCSI_DEBUG_MAX_CMD_LEN;
devip = devInfoReg(sdp);
+ if (NULL == devip)
+ return 1; /* no resources, will be marked offline */
sdp->hostdata = devip;
if (sdp->host->cmd_per_lun)
scsi_adjust_queue_depth(sdp, SDEBUG_TAGGED_QUEUING,
@@ -2044,7 +2050,7 @@ static struct sdebug_dev_info * devInfoR
}
}
if (NULL == open_devip) { /* try and make a new one */
- open_devip = kzalloc(sizeof(*open_devip),GFP_KERNEL);
+ open_devip = kzalloc(sizeof(*open_devip),GFP_ATOMIC);
if (NULL == open_devip) {
printk(KERN_ERR "%s: out of memory at line %d\n",
__FUNCTION__, __LINE__);
--
next prev parent reply other threads:[~2007-03-10 6:21 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20070310061234.465093436@mini.kroah.org>
2007-03-10 6:16 ` [patch 00/20] 2.6.20-stable review Greg KH
2007-03-10 6:16 ` [patch 01/20] conntrack: fix {nf, ip}_ct_iterate_cleanup endless loops Greg KH
2007-03-10 6:16 ` [patch 02/20] nf_conntrack/nf_nat: fix incorrect config ifdefs Greg KH
2007-03-10 6:16 ` [patch 03/20] tcp conntrack: accept SYN|URG as valid Greg KH
2007-03-10 6:17 ` [patch 04/20] nfnetlink_log: fix reference leak Greg KH
2007-03-10 6:17 ` [patch 05/20] nfnetlink_log: fix use after free Greg KH
2007-03-10 6:17 ` [patch 06/20] nfnetlink_log: fix NULL pointer dereference Greg KH
2007-03-10 6:17 ` [patch 07/20] nfnetlink_log: fix possible " Greg KH
2007-03-10 6:17 ` [patch 08/20] ip6_route_me_harder should take into account mark Greg KH
2007-03-10 6:17 ` [patch 09/20] nf_conntrack: fix incorrect classification of IPv6 fragments as ESTABLISHED Greg KH
2007-03-10 6:17 ` [patch 10/20] nfnetlink_log: zero-terminate prefix Greg KH
2007-03-10 6:17 ` [patch 11/20] nfnetlink_log: fix crash on bridged packet Greg KH
2007-03-10 6:18 ` [patch 12/20] nfnetlink_log: fix reference counting Greg KH
2007-03-10 9:14 ` [stable] " Greg KH
2007-03-13 15:45 ` Patrick McHardy
2007-03-10 6:18 ` Greg KH [this message]
2007-03-10 6:18 ` [patch 14/20] bcm43xx: Fix problem with >1 GB RAM Greg KH
2007-03-10 6:18 ` [patch 15/20] Fix compat_getsockopt Greg KH
2007-03-10 6:18 ` [patch 16/20] fix for bugzilla #7544 (keyspan USB-to-serial converter) Greg KH
2007-03-10 6:18 ` [patch 17/20] Fix callback bug in connector Greg KH
2007-03-10 6:18 ` [patch 18/20] Fix sparc64 device register probing Greg KH
2007-03-10 6:18 ` [patch 19/20] Fix timewait jiffies Greg KH
2007-03-10 6:19 ` [patch 20/20] Fix UDP header pointer after pskb_trim_rcsum() Greg KH
2007-03-10 6:23 ` [patch 00/20] 2.6.20-stable review Greg KH
2007-03-10 21:43 ` Chuck Ebbert
2007-03-10 21:49 ` Greg KH
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