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authorAlexey Gladkov <gladkov.alexey@gmail.com>2020-06-10 20:35:49 +0200
committerEric W. Biederman <ebiederm@xmission.com>2020-06-10 14:54:54 -0500
commit058f2e4da79b23afb56ce3d03d907d6cdd36f2b8 (patch)
tree585a18087f3ac99efdd6400ae9d09392df4732f5 /fs/proc/internal.h
parent9d78edeaec759f997c303f286ecd39daee166f2a (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 'fs/proc/internal.h')
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