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| author | Liu Shixin via Jfs-discussion <jfs-discussion@lists.sourceforge.net> | 2022-11-03 11:01:59 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-03-11 16:31:55 +0100 |
| commit | f57fb23fcc51de51476217339627ec0fd5cb02bd (patch) | |
| tree | b1d61d71964db532c6664bb98e710616f742b038 /drivers/pwm/pwm-stm32-lp.c | |
| parent | 01d0d2b8b4e3cf2110baba9371c0c3d04ad5c77b (diff) | |
fs/jfs: fix shift exponent db_agl2size negative
[ Upstream commit fad376fce0af58deebc5075b8539dc05bf639af3 ]
As a shift exponent, db_agl2size can not be less than 0. Add the missing
check to fix the shift-out-of-bounds bug reported by syzkaller:
UBSAN: shift-out-of-bounds in fs/jfs/jfs_dmap.c:2227:15
shift exponent -744642816 is negative
Reported-by: syzbot+0be96567042453c0c820@syzkaller.appspotmail.com
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Liu Shixin <liushixin2@huawei.com>
Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/pwm/pwm-stm32-lp.c')
0 files changed, 0 insertions, 0 deletions