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Tetsuo Handa
bcdd0ca8cb
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 commit5362544beb("tty: don't panic on OOM in tty_set_ldisc()"). But we reverted that attempt by commita8983d01f9("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]>