Commit 7ba03471 authored by Eric W. Biederman's avatar Eric W. Biederman
Browse files

signal: Make coredump handling explicit in complete_signal 

Ever since commit 6cd8f0ac ("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: default avatar"Eric W. Biederman" <ebiederm@xmission.com>
parent a0287db0

kernel/signal.c

+1 −1
Original line number Diff line number Diff line
@@ -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)) {

		/*