diff options
| author | Tetsuo Handa <[email protected]> | 2018-04-25 20:12:31 +0900 |
|---|---|---|
| committer | Greg Kroah-Hartman <[email protected]> | 2018-04-25 15:03:44 +0200 |
| commit | bcdd0ca8cb8730573afebcaae4138f8f4c8eaa20 (patch) | |
| tree | b022d1770f2ab76607c0071636e2012daa678cdb /lib/memory-notifier-error-inject.c | |
| parent | 66dd99c2033684169f04068f66c7f83f7da229b8 (diff) | |
tty: Use __GFP_NOFAIL for tty_ldisc_get()
syzbot is reporting crashes triggered by memory allocation fault injection
at tty_ldisc_get() [1]. As an attempt to handle OOM in a graceful way, we
have tried commit 5362544bebe85071 ("tty: don't panic on OOM in
tty_set_ldisc()"). But we reverted that attempt by commit a8983d01f9b7d600
("Revert "tty: don't panic on OOM in tty_set_ldisc()"") due to reproducible
crash. We should spend resource for finding and fixing race condition bugs
rather than complicate error paths for 2 * sizeof(void *) bytes allocation
failure.
[1] https://syzkaller.appspot.com/bug?id=489d33fa386453859ead58ff5171d43772b13aa3
Signed-off-by: Tetsuo Handa <[email protected]>
Reported-by: syzbot <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Vegard Nossum <[email protected]>
Cc: Dmitry Vyukov <[email protected]>
Cc: Jiri Slaby <[email protected]>
Cc: Peter Hurley <[email protected]>
Cc: One Thousand Gnomes <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: stable <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
Diffstat (limited to 'lib/memory-notifier-error-inject.c')
0 files changed, 0 insertions, 0 deletions