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| author | Sasha Levin <levinsasha928@gmail.com> | 2012-07-17 00:01:26 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-28 10:02:11 -0700 |
| commit | 7a104fcedf491fe1470dab36605f1b1d55ad893d (patch) | |
| tree | 41afdf3c948543fd0caec588a0067922e2b1e8de /fs | |
| parent | ef9fccff2f6108bd5128113d64d260d3f075eb16 (diff) | |
| download | kernel_samsung_smdk4412-7a104fcedf491fe1470dab36605f1b1d55ad893d.zip kernel_samsung_smdk4412-7a104fcedf491fe1470dab36605f1b1d55ad893d.tar.gz kernel_samsung_smdk4412-7a104fcedf491fe1470dab36605f1b1d55ad893d.tar.bz2 | |
SUNRPC: Prevent kernel stack corruption on long values of flush
commit 212ba90696ab4884e2025b0b13726d67aadc2cd4 upstream.
The buffer size in read_flush() is too small for the longest possible values
for it. This can lead to a kernel stack corruption:
[ 43.047329] Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: ffffffff833e64b4
[ 43.047329]
[ 43.049030] Pid: 6015, comm: trinity-child18 Tainted: G W 3.5.0-rc7-next-20120716-sasha #221
[ 43.050038] Call Trace:
[ 43.050435] [<ffffffff836c60c2>] panic+0xcd/0x1f4
[ 43.050931] [<ffffffff833e64b4>] ? read_flush.isra.7+0xe4/0x100
[ 43.051602] [<ffffffff810e94e6>] __stack_chk_fail+0x16/0x20
[ 43.052206] [<ffffffff833e64b4>] read_flush.isra.7+0xe4/0x100
[ 43.052951] [<ffffffff833e6500>] ? read_flush_pipefs+0x30/0x30
[ 43.053594] [<ffffffff833e652c>] read_flush_procfs+0x2c/0x30
[ 43.053596] [<ffffffff812b9a8c>] proc_reg_read+0x9c/0xd0
[ 43.053596] [<ffffffff812b99f0>] ? proc_reg_write+0xd0/0xd0
[ 43.053596] [<ffffffff81250d5b>] do_loop_readv_writev+0x4b/0x90
[ 43.053596] [<ffffffff81250fd6>] do_readv_writev+0xf6/0x1d0
[ 43.053596] [<ffffffff812510ee>] vfs_readv+0x3e/0x60
[ 43.053596] [<ffffffff812511b8>] sys_readv+0x48/0xb0
[ 43.053596] [<ffffffff8378167d>] system_call_fastpath+0x1a/0x1f
Signed-off-by: Sasha Levin <levinsasha928@gmail.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions