> Date: Thu, 09 Oct 2025 09:46:27 -0700 [thread overview]
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit: ec714e371f22 Merge tag 'perf-tools-for-v6.18-1-2025-10-08'..
> git tree: upstream
> console output: https://syzkaller.appspot.com/x/log.txt?x=174a4b34580000
> kernel config: https://syzkaller.appspot.com/x/.config?x=db9c80a8900dca57
> dashboard link: https://syzkaller.appspot.com/bug?extid=665739f456b28f32b23d
> compiler: Debian clang version 20.1.8
> (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
> syz repro: https://syzkaller.appspot.com/x/repro.syz?x=140e0dcd980000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1581452f980000
Test Alexei's fix.
#syz test
--- a/mm/page_owner.c
+++ b/mm/page_owner.c
@@ -168,6 +168,9 @@ static void add_stack_record_to_list(struct stack_record
*stack_record,
unsigned long flags;
struct stack *stack;
+ if (!gfpflags_allow_spinning(gfp_mask))
+ return;
+
set_current_in_page_owner();
stack = kmalloc(sizeof(*stack), gfp_nested_mask(gfp_mask));
if (!stack) {
--
