syzbot


BUG: scheduling while atomic in kthreadd

Status: premoderation: reported on 2024/04/14 17:18
Reported-by: syzbot+2296a2d1a6b0b0585930@syzkaller.appspotmail.com
First crash: 89d, last: 89d

Sample crash report:
BUG: scheduling while atomic: kthreadd/2/0x00000002
Modules linked in:
Preemption disabled at:
[<ffffffff81aca9b7>] kmap_atomic include/linux/highmem-internal.h:196 [inline]
[<ffffffff81aca9b7>] clear_highpage include/linux/highmem.h:180 [inline]
[<ffffffff81aca9b7>] kernel_init_free_pages+0x47/0xf0 mm/page_alloc.c:1407
CPU: 0 PID: 2 Comm: kthreadd Not tainted 5.15.148-syzkaller-00718-g993bed180178 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x151/0x1b7 lib/dump_stack.c:106
 dump_stack+0x15/0x17 lib/dump_stack.c:113
 __schedule_bug+0x195/0x260 kernel/sched/core.c:5707
 schedule_debug kernel/sched/core.c:5734 [inline]
 __schedule+0xd19/0x1590 kernel/sched/core.c:6402
 schedule+0x11f/0x1e0 kernel/sched/core.c:6595
 kthreadd+0x245/0x490 kernel/kthread.c:703
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/14 17:17 android13-5.15-lts 993bed180178 c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: scheduling while atomic in kthreadd
* Struck through repros no longer work on HEAD.