syzbot


BUG: scheduling while atomic in xfer_to_guest_mode_handle_work

Status: premoderation: reported on 2024/04/24 17:58
Reported-by: syzbot+70928404ed9d181f8e97@syzkaller.appspotmail.com
First crash: 85d, last: 85d

Sample crash report:
BUG: scheduling while atomic: syz-executor.4/8306/0x00000002
Modules linked in:
Preemption disabled at:
[<ffffffff8165eb4a>] is_module_text_address+0x1a/0x140 kernel/module.c:4811
CPU: 1 PID: 8306 Comm: syz-executor.4 Tainted: G        W         5.15.148-syzkaller-00013-gad06eaf051cd #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
 xfer_to_guest_mode_work kernel/entry/kvm.c:20 [inline]
 xfer_to_guest_mode_handle_work+0x6f/0xc0 kernel/entry/kvm.c:50
 vcpu_run arch/x86/kvm/x86.c:10160 [inline]
 kvm_arch_vcpu_ioctl_run+0xd1c/0x2270 arch/x86/kvm/x86.c:10375
 kvm_vcpu_ioctl+0x7eb/0xcf0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:3893
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:874 [inline]
 __se_sys_ioctl+0x114/0x190 fs/ioctl.c:860
 __x64_sys_ioctl+0x7b/0x90 fs/ioctl.c:860
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f89eb3ccea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f89ea1400c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f89eb4faf80 RCX: 00007f89eb3ccea9
RDX: 0000000000000000 RSI: 000000000000ae80 RDI: 000000000000000d
RBP: 00007f89eb4194a4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f89eb4faf80 R15: 00007ffe29dc4028
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/24 17:57 android13-5.15-lts ad06eaf051cd 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-5-15 BUG: scheduling while atomic in xfer_to_guest_mode_handle_work
* Struck through repros no longer work on HEAD.