VisionFive2 Linux kernel

author: Oleg Nesterov <oleg@redhat.com> 2013-04-30 15:28:13 -0700 committer: Linus Torvalds <torvalds@linux-foundation.org> 2013-04-30 17:04:06 -0700 commit: acdedd99b0f3bff9b4bb2103a6b1268c03d1f963 parent: 6cd8f0acae3420afce37bf51a9ff8c2c20342af5

Commit Summary:

coredump: sanitize the setting of signal->group_exit_code

Diffstat:

1 file changed, 6 insertions, 5 deletions

diff --git a/fs/coredump.c b/fs/coredump.c
index 6fea59043532..acc4448c28e7 100644
--- a/fs/coredump.c
+++ b/fs/coredump.c
@@ -390,12 +390,14 @@ static int coredump_wait(int exit_code, struct core_state *core_state)
 	return core_waiters;
 }
 
-static void coredump_finish(struct mm_struct *mm)
+static void coredump_finish(struct mm_struct *mm, bool core_dumped)
 {
 	struct core_thread *curr, *next;
 	struct task_struct *task;
 
 	spin_lock_irq(&current->sighand->siglock);
+	if (core_dumped && !__fatal_signal_pending(current))
+		current->signal->group_exit_code |= 0x80;
 	current->signal->group_exit_task = NULL;
 	current->signal->flags = SIGNAL_GROUP_EXIT;
 	spin_unlock_irq(&current->sighand->siglock);
@@ -480,6 +482,7 @@ void do_coredump(siginfo_t *siginfo)
 	int ispipe;
 	struct files_struct *displaced;
 	bool need_nonrelative = false;
+	bool core_dumped = false;
 	static atomic_t core_dump_count = ATOMIC_INIT(0);
 	struct coredump_params cprm = {
 		.siginfo = siginfo,
@@ -638,9 +641,7 @@ void do_coredump(siginfo_t *siginfo)
 		goto close_fail;
 	if (displaced)
 		put_files_struct(displaced);
-	retval = binfmt->core_dump(&cprm);
-	if (retval)
-		current->signal->group_exit_code |= 0x80;
+	core_dumped = binfmt->core_dump(&cprm);
 
 	if (ispipe && core_pipe_limit)
 		wait_for_dump_helpers(cprm.file);
@@ -653,7 +654,7 @@ fail_dropcount:
 fail_unlock:
 	kfree(cn.corename);
 fail_corename:
-	coredump_finish(mm);
+	coredump_finish(mm, core_dumped);
 	revert_creds(old_cred);
 fail_creds:
 	put_cred(cred);