Re: [syzbot] [serial?] BUG: soft lockup in debug_check_no_obj_freed

From: Edward Adam Davis
Date: Tue Oct 22 2024 - 08:02:37 EST


maybe we can insert cond_resched()

#syz test

diff --git a/lib/debugobjects.c b/lib/debugobjects.c
index 5ce473ad499b..5cc5b21ae71f 100644
--- a/lib/debugobjects.c
+++ b/lib/debugobjects.c
@@ -975,6 +975,10 @@ static void __debug_check_no_obj_freed(const void *address, unsigned long size)

repeat:
cnt = 0;
+
+ if (in_task())
+ cond_resched();
+
raw_spin_lock_irqsave(&db->lock, flags);
hlist_for_each_entry_safe(obj, tmp, &db->list, node) {
cnt++;