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| author | Chao Yu <chao2.yu@samsung.com> | 2014-07-07 03:39:32 +0200 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2014-07-09 14:59:55 +0200 |
| commit | 50e1f8d22199b557337b3d1ec8520e4c5aa5c76e (patch) | |
| tree | efae0ff87090bc8c6707eb2385ef2374f1ec256f /fs/sync.c | |
| parent | f2fs: check bdi->dirty_exceeded when trying to skip data writes (diff) | |
| download | linux-50e1f8d22199b557337b3d1ec8520e4c5aa5c76e.tar.xz linux-50e1f8d22199b557337b3d1ec8520e4c5aa5c76e.zip | |
f2fs: avoid to access NULL pointer in issue_flush_thread
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=75861
Denis 2014-05-10 11:28:59 UTC reported:
"F2FS-fs (mmcblk0p28): mounting..
Unable to handle kernel NULL pointer dereference at virtual address 00000018
...
[<c0a2f678>] (_raw_spin_lock+0x3c/0x70) from [<c03a0330>] (issue_flush_thread+0x50/0x17c)
[<c03a0330>] (issue_flush_thread+0x50/0x17c) from [<c01b4064>] (kthread+0x98/0xa4)
[<c01b4064>] (kthread+0x98/0xa4) from [<c0108060>] (kernel_thread_exit+0x0/0x8)"
This patch assign cmd_control_info in sm_info before issue_flush_thread is being
created, so this make sure that issue flush thread will have no chance to access
invalid info in fcc.
Signed-off-by: Chao Yu <chao2.yu@samsung.com>
Reviewed-by: Gu Zheng <guz.fnst@cn.fujitsu.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/sync.c')
0 files changed, 0 insertions, 0 deletions