From 7ba03471ac4ad2432e5ccf67d9d4ab03c177578a Mon Sep 17 00:00:00 2001 From: "Eric W. Biederman" Date: Sat, 8 Jan 2022 11:01:12 -0600 Subject: signal: Make coredump handling explicit in complete_signal Ever since commit 6cd8f0acae34 ("coredump: ensure that SIGKILL always kills the dumping thread") it has been possible for a SIGKILL received during a coredump to set SIGNAL_GROUP_EXIT and trigger a process shutdown (for a second time). Update the logic to explicitly allow coredumps so that coredumps can set SIGNAL_GROUP_EXIT and shutdown like an ordinary process. Link: https://lkml.kernel.org/r/87zgo6ytyf.fsf_-_@email.froward.int.ebiederm.org Signed-off-by: "Eric W. Biederman" --- kernel/signal.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'kernel/signal.c') diff --git a/kernel/signal.c b/kernel/signal.c index f95a4423519d..0706c1345a71 100644 --- a/kernel/signal.c +++ b/kernel/signal.c @@ -1032,7 +1032,7 @@ static void complete_signal(int sig, struct task_struct *p, enum pid_type type) * then start taking the whole group down immediately. */ if (sig_fatal(p, sig) && - !(signal->flags & SIGNAL_GROUP_EXIT) && + (signal->core_state || !(signal->flags & SIGNAL_GROUP_EXIT)) && !sigismember(&t->real_blocked, sig) && (sig == SIGKILL || !p->ptrace)) { /* -- cgit v1.2.3-58-ga151