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0c0214df28
The rrror handling in fanotify_init(2) is buggy and overwrites 'fd'
before calling put_unused_fd() leading to possible access beyond the end
of fd bitmap. Fix it.
Reported-by: syzbot+6a3aa63412255587b21b@syzkaller.appspotmail.com
Fixes: ebe559609d ("fs: get rid of __FMODE_NONOTIFY kludge")
Signed-off-by: Jan Kara <jack@suse.cz>