From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org, stable@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
alan@lxorguk.ukuu.org.uk, Stanislav Kozina <skozina@redhat.com>,
Alan Cox <alan@linux.intel.com>
Subject: [ 20/58] Remove BUG_ON from n_tty_read()
Date: Thu, 4 Oct 2012 14:19:27 -0700 [thread overview]
Message-ID: <20121004210638.002931461@linuxfoundation.org> (raw)
In-Reply-To: <20121004210635.449598766@linuxfoundation.org>
3.5-stable review patch. If anyone has any objections, please let me know.
------------------
From: Stanislav Kozina <skozina@redhat.com>
commit e9490e93c1978b6669f3e993caa3189be13ce459 upstream.
Change the BUG_ON to WARN_ON and return in case of tty->read_buf==NULL. We want to track a
couple of long standing reports of this but at the same time we can avoid killing the box.
Signed-off-by: Stanislav Kozina <skozina@redhat.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
drivers/tty/n_tty.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/drivers/tty/n_tty.c
+++ b/drivers/tty/n_tty.c
@@ -1728,7 +1728,8 @@ static ssize_t n_tty_read(struct tty_str
do_it_again:
- BUG_ON(!tty->read_buf);
+ if (WARN_ON(!tty->read_buf))
+ return -EAGAIN;
c = job_control(tty, file);
if (c < 0)
next prev parent reply other threads:[~2012-10-04 21:21 UTC|newest]
Thread overview: 59+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-04 21:19 [ 00/58] 3.5.6-stable review Greg Kroah-Hartman
2012-10-04 21:19 ` [ 01/58] vfs: dcache: fix deadlock in tree traversal Greg Kroah-Hartman
2012-10-04 21:19 ` [ 02/58] dm mpath: only retry ioctl when no paths if queue_if_no_path set Greg Kroah-Hartman
2012-10-04 21:19 ` [ 03/58] dm: handle requests beyond end of device instead of using BUG_ON Greg Kroah-Hartman
2012-10-04 21:19 ` [ 04/58] dm table: clear add_random unless all devices have it set Greg Kroah-Hartman
2012-10-04 21:19 ` [ 05/58] dm verity: fix overflow check Greg Kroah-Hartman
2012-10-04 21:19 ` [ 06/58] usb: gadget: make g_printer enumerate again Greg Kroah-Hartman
2012-10-04 21:19 ` [ 07/58] usb: gadget: initialize the strings in tcm_usb_gadget properly Greg Kroah-Hartman
2012-10-04 21:19 ` [ 08/58] USB: option: blacklist QMI interface on ZTE MF683 Greg Kroah-Hartman
2012-10-04 21:19 ` [ 09/58] USB: ftdi_sio: add TIAO USB Multi-Protocol Adapter (TUMPA) support Greg Kroah-Hartman
2012-10-04 21:19 ` [ 10/58] USB: qcaux: add Pantech vendor class match Greg Kroah-Hartman
2012-10-04 21:19 ` [ 11/58] usb: host: xhci: Fix Null pointer dereferencing with 71c731a for non-x86 systems Greg Kroah-Hartman
2012-10-04 21:19 ` [ 12/58] USB: serial: fix up bug with missing {} Greg Kroah-Hartman
2012-10-04 21:19 ` [ 13/58] staging: speakup_soft: Fix reading of init string Greg Kroah-Hartman
2012-10-04 21:19 ` [ 14/58] tty: keyboard.c: Remove locking from vt_get_leds Greg Kroah-Hartman
2012-10-04 21:19 ` [ 15/58] staging: r8712u: Do not queue cloned skb Greg Kroah-Hartman
2012-10-04 21:19 ` [ 16/58] staging: comedi: s626: dont dereference insn->data Greg Kroah-Hartman
2012-10-04 21:19 ` [ 17/58] staging: comedi: jr3_pci: fix iomem dereference Greg Kroah-Hartman
2012-10-04 21:19 ` [ 18/58] staging: comedi: dont dereference user memory for INSN_INTTRIG Greg Kroah-Hartman
2012-10-04 21:19 ` [ 19/58] staging: comedi: fix memory leak for saved channel list Greg Kroah-Hartman
2012-10-04 21:19 ` Greg Kroah-Hartman [this message]
2012-10-04 21:19 ` [ 21/58] TTY: ttyprintk, dont touch behind tty->write_buf Greg Kroah-Hartman
2012-10-04 21:19 ` [ 22/58] serial: omap: fix software flow control Greg Kroah-Hartman
2012-10-04 21:19 ` [ 23/58] serial: pl011: handle corruption at high clock speeds Greg Kroah-Hartman
2012-10-04 21:19 ` [ 24/58] serial: set correct baud_base for EXSYS EX-41092 Dual 16950 Greg Kroah-Hartman
2012-10-04 21:19 ` [ 25/58] tools/hv: Fix file handle leak Greg Kroah-Hartman
2012-10-04 21:19 ` [ 26/58] tools/hv: Fix exit() error code Greg Kroah-Hartman
2012-10-04 21:19 ` [ 27/58] tools/hv: Check for read/write errors Greg Kroah-Hartman
2012-10-04 21:19 ` [ 28/58] b43legacy: Fix crash on unload when firmware not available Greg Kroah-Hartman
2012-10-04 21:19 ` [ 29/58] firmware: Add missing attributes to EFI variable attribute print out from sysfs Greg Kroah-Hartman
2012-10-04 21:19 ` [ 30/58] xhci: Intel Panther Point BEI quirk Greg Kroah-Hartman
2012-10-04 21:19 ` [ 31/58] xHCI: add cmd_ring_state Greg Kroah-Hartman
2012-10-04 21:19 ` [ 32/58] xHCI: add aborting command ring function Greg Kroah-Hartman
2012-10-04 21:19 ` [ 33/58] xHCI: cancel command after command timeout Greg Kroah-Hartman
2012-10-04 21:19 ` [ 34/58] xHCI: handle command after aborting the command ring Greg Kroah-Hartman
2012-10-04 21:19 ` [ 35/58] Increase XHCI suspend timeout to 16ms Greg Kroah-Hartman
2012-10-04 21:19 ` [ 36/58] HID: keep dev_rdesc unmodified and use it for comparisons Greg Kroah-Hartman
2012-10-04 21:19 ` [ 37/58] ath9k: Disable ASPM only for AR9285 Greg Kroah-Hartman
2012-10-04 21:19 ` [ 38/58] xen/pciback: Restore the PCI config space after an FLR Greg Kroah-Hartman
2012-10-04 21:19 ` [ 39/58] coredump: prevent double-free on an error path in core dumper Greg Kroah-Hartman
2012-10-04 21:19 ` [ 40/58] n_gsm.c: Implement 3GPP27.010 DLC start-up procedure in MUX Greg Kroah-Hartman
2012-10-04 21:19 ` [ 41/58] n_gsm: uplink SKBs accumulate on list Greg Kroah-Hartman
2012-10-04 21:19 ` [ 42/58] n_gsm: added interlocking for gsm_data_lock for certain code paths Greg Kroah-Hartman
2012-10-04 21:19 ` [ 43/58] n_gsm: memory leak in uplink error path Greg Kroah-Hartman
2012-10-04 21:19 ` [ 44/58] UBI: fix autoresize handling in R/O mode Greg Kroah-Hartman
2012-10-04 21:19 ` [ 45/58] UBI: erase free PEB with bitflip in EC header Greg Kroah-Hartman
2012-10-04 21:19 ` [ 46/58] Yama: handle 32-bit userspace prctl Greg Kroah-Hartman
2012-10-04 21:19 ` [ 47/58] SCSI: ibmvscsi: Fix host config length field overflow Greg Kroah-Hartman
2012-10-04 21:19 ` [ 48/58] SCSI: hpsa: Use LUN reset instead of target reset Greg Kroah-Hartman
2012-10-04 21:19 ` [ 49/58] can: mscan-mpc5xxx: fix return value check in mpc512x_can_get_clock() Greg Kroah-Hartman
2012-10-04 21:19 ` [ 50/58] remoteproc: select VIRTIO to avoid build breakage Greg Kroah-Hartman
2012-10-04 21:19 ` [ 51/58] remoteproc: fix a potential NULL-dereference on cleanup Greg Kroah-Hartman
2012-10-04 21:19 ` [ 52/58] IPoIB: Fix use-after-free of multicast object Greg Kroah-Hartman
2012-10-04 21:20 ` [ 53/58] IB/srp: Fix use-after-free in srp_reset_req() Greg Kroah-Hartman
2012-10-04 21:20 ` [ 54/58] IB/srp: Avoid having aborted requests hang Greg Kroah-Hartman
2012-10-04 21:20 ` [ 55/58] isci: fix isci_pci_probe() generates warning on efi failure path Greg Kroah-Hartman
2012-10-04 21:20 ` [ 56/58] x86/alternatives: Fix p6 nops on non-modular kernels Greg Kroah-Hartman
2012-10-04 21:20 ` [ 57/58] SCSI: scsi_remove_target: fix softlockup regression on hot remove Greg Kroah-Hartman
2012-10-04 21:20 ` [ 58/58] SCSI: scsi_dh_alua: Enable STPG for unavailable ports Greg Kroah-Hartman
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