From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
stable@vger.kernel.org,
Stanislav Kinsbursky <skinsbursky@parallels.com>,
Linus Torvalds <torvalds@linux-foundation.org>
Subject: [ 11/27] ipc: set msg back to -EAGAIN if copy wasnt performed
Date: Sun, 14 Apr 2013 19:43:10 -0700 [thread overview]
Message-ID: <20130415024232.197618863@linuxfoundation.org> (raw)
In-Reply-To: <20130415024231.351969241@linuxfoundation.org>
3.8-stable review patch. If anyone has any objections, please let me know.
------------------
From: Stanislav Kinsbursky <skinsbursky@parallels.com>
commit 2dc958fa2fe6987e7ab106bd97029a09a82fcd8d upstream.
Make sure that msg pointer is set back to error value in case of
MSG_COPY flag is set and desired message to copy wasn't found. This
garantees that msg is either a error pointer or a copy address.
Otherwise the last message in queue will be freed without unlinking from
the queue (which leads to memory corruption) and the dummy allocated
copy won't be released.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
ipc/msg.c | 1 +
1 file changed, 1 insertion(+)
--- a/ipc/msg.c
+++ b/ipc/msg.c
@@ -872,6 +872,7 @@ long do_msgrcv(int msqid, void __user *b
goto out_unlock;
break;
}
+ msg = ERR_PTR(-EAGAIN);
} else
break;
msg_counter++;
next prev parent reply other threads:[~2013-04-15 2:47 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-15 2:42 [ 00/27] 3.8.8-stable review Greg Kroah-Hartman
2013-04-15 2:43 ` [ 01/27] ALSA: usb-audio: fix endianness bug in snd_nativeinstruments_* Greg Kroah-Hartman
2013-04-15 2:43 ` [ 02/27] ASoC: core: Fix to check return value of snd_soc_update_bits_locked() Greg Kroah-Hartman
2013-04-15 2:43 ` [ 03/27] ASoC: wm5102: Correct lookup of arizona struct in SYSCLK event Greg Kroah-Hartman
2013-04-15 2:43 ` [ 04/27] ASoC: wm8903: Fix the bypass to HP/LINEOUT when no DAC or ADC is running Greg Kroah-Hartman
2013-04-15 2:43 ` [ 05/27] tracing: Fix double free when function profile init failed Greg Kroah-Hartman
2013-04-15 2:43 ` [ 06/27] ARM: Kirkwood: Fix typo in the definition of ix2-200 rebuild LED Greg Kroah-Hartman
2013-04-15 2:43 ` [ 07/27] ARM: imx35 Bugfix admux clock Greg Kroah-Hartman
2013-04-15 2:43 ` [ 08/27] dmaengine: omap-dma: Start DMA without delay for cyclic channels Greg Kroah-Hartman
2013-04-15 2:43 ` [ 09/27] PM / reboot: call syscore_shutdown() after disable_nonboot_cpus() Greg Kroah-Hartman
2013-04-15 2:43 ` [ 10/27] Revert "brcmsmac: support 4313iPA" Greg Kroah-Hartman
2013-04-15 2:43 ` Greg Kroah-Hartman [this message]
2013-04-15 2:43 ` [ 12/27] GFS2: Fix unlock of fcntl locks during withdrawn state Greg Kroah-Hartman
2013-04-15 2:43 ` [ 13/27] GFS2: return error if malloc failed in gfs2_rs_alloc() Greg Kroah-Hartman
2013-04-15 2:43 ` [ 14/27] SCSI: libsas: fix handling vacant phy in sas_set_ex_phy() Greg Kroah-Hartman
2013-04-15 2:43 ` [ 15/27] cifs: Allow passwords which begin with a delimitor Greg Kroah-Hartman
2013-04-15 2:43 ` [ 16/27] target: Fix incorrect fallthrough of ALUA Standby/Offline/Transition CDBs Greg Kroah-Hartman
2013-04-15 2:43 ` [ 17/27] vfs: Revert spurious fix to spinning prevention in prune_icache_sb Greg Kroah-Hartman
2013-04-15 2:43 ` [ 18/27] kobject: fix kset_find_obj() race with concurrent last kobject_put() Greg Kroah-Hartman
2013-04-15 2:43 ` [ 19/27] gpio: fix wrong checking condition for gpio range Greg Kroah-Hartman
2013-04-15 2:43 ` [ 20/27] x86-32: Fix possible incomplete TLB invalidate with PAE pagetables Greg Kroah-Hartman
2013-04-15 2:43 ` [ 21/27] tracing: Fix possible NULL pointer dereferences Greg Kroah-Hartman
2013-04-15 2:43 ` [ 22/27] udl: handle EDID failure properly Greg Kroah-Hartman
2013-04-15 2:43 ` [ 23/27] ftrace: Move ftrace_filter_lseek out of CONFIG_DYNAMIC_FTRACE section Greg Kroah-Hartman
2013-04-15 2:43 ` [ 24/27] sched_clock: Prevent 64bit inatomicity on 32bit systems Greg Kroah-Hartman
2013-04-15 2:43 ` [ 25/27] x86, mm, paravirt: Fix vmalloc_fault oops during lazy MMU updates Greg Kroah-Hartman
2013-04-15 2:43 ` [ 26/27] x86, mm: Patch out arch_flush_lazy_mmu_mode() when running on bare metal Greg Kroah-Hartman
2013-04-15 2:43 ` [ 27/27] tty: dont deadlock while flushing workqueue Greg Kroah-Hartman
2013-04-15 19:37 ` Peter Hurley
2013-04-15 19:50 ` Greg Kroah-Hartman
2013-04-15 14:05 ` [ 00/27] 3.8.8-stable review Shuah Khan
2013-04-15 16:07 ` Greg Kroah-Hartman
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