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| author | Alexey Gladkov <gladkov.alexey@gmail.com> | 2020-06-10 20:35:49 +0200 |
|---|---|---|
| committer | Eric W. Biederman <ebiederm@xmission.com> | 2020-06-10 14:54:54 -0500 |
| commit | 058f2e4da79b23afb56ce3d03d907d6cdd36f2b8 (patch) | |
| tree | 585a18087f3ac99efdd6400ae9d09392df4732f5 /kernel/bpf | |
| parent | 9d78edeaec759f997c303f286ecd39daee166f2a (diff) | |
proc: s_fs_info may be NULL when proc_kill_sb is called
syzbot found that proc_fill_super() fails before filling up sb->s_fs_info,
deactivate_locked_super() will be called and sb->s_fs_info will be NULL.
The proc_kill_sb() does not expect fs_info to be NULL which is wrong.
Link: https://lore.kernel.org/lkml/0000000000002d7ca605a7b8b1c5@google.com
Reported-by: syzbot+4abac52934a48af5ff19@syzkaller.appspotmail.com
Fixes: fa10fed30f25 ("proc: allow to mount many instances of proc in one pid namespace")
Signed-off-by: Alexey Gladkov <gladkov.alexey@gmail.com>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Diffstat (limited to 'kernel/bpf')
0 files changed, 0 insertions, 0 deletions