syzbot


WARNING in kthread_bind_mask
Status: upstream: reported on 2022/02/20 18:27
Reported-by: syzbot+087b7effddeec0697c66@syzkaller.appspotmail.com
First crash: 99d, last: 3d05h

Sample crash report:
WARNING: CPU: 0 PID: 7628 at kernel/kthread.c:524 __kthread_bind_mask kernel/kthread.c:524 [inline]
WARNING: CPU: 0 PID: 7628 at kernel/kthread.c:524 kthread_bind_mask+0x35/0xc0 kernel/kthread.c:542
Modules linked in:
CPU: 0 PID: 7628 Comm: syz-executor.3 Not tainted 5.18.0-syzkaller-01157-g143a6252e1b8 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
RIP: 0010:__kthread_bind_mask kernel/kthread.c:524 [inline]
RIP: 0010:kthread_bind_mask+0x35/0xc0 kernel/kthread.c:542
Code: fb e8 af 52 2a 00 be 02 00 00 00 48 89 df e8 d2 d2 03 00 31 ff 48 89 c5 48 89 c6 e8 25 55 2a 00 48 85 ed 75 12 e8 8b 52 2a 00 <0f> 0b 5b 5d 41 5c 41 5d e9 7e 52 2a 00 e8 79 52 2a 00 4c 8d ab 80
RSP: 0018:ffffc9000488fc00 EFLAGS: 00010212
RAX: 00000000000021ce RBX: ffff8880684ae100 RCX: ffffc900039ab000
RDX: 0000000000040000 RSI: ffffffff814e3a45 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff814e3a3b R11: 0000000000000001 R12: ffffffff8db91d58
R13: ffff8880119e6640 R14: ffff888019d34020 R15: ffff888019d34000
FS:  00007f796b55b700(0000) GS:ffff88802cb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00a0b3000 CR3: 0000000046005000 CR4: 0000000000152ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 init_rescuer kernel/workqueue.c:4273 [inline]
 init_rescuer+0x141/0x1d0 kernel/workqueue.c:4252
 alloc_workqueue+0xbf7/0xf00 kernel/workqueue.c:4340
 kvm_mmu_init_tdp_mmu+0x8e/0x230 arch/x86/kvm/mmu/tdp_mmu.c:24
 kvm_mmu_init_vm+0x128/0x210 arch/x86/kvm/mmu/mmu.c:5804
 kvm_arch_init_vm+0x64/0x680 arch/x86/kvm/x86.c:11692
 kvm_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:1136 [inline]
 kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:4778 [inline]
 kvm_dev_ioctl+0xbfb/0x1c70 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4833
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl fs/ioctl.c:856 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0
RIP: 0033:0x7f796a4890f9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f796b55b168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f796a59bf60 RCX: 00007f796a4890f9
RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000003
RBP: 00007f796a4e308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd76a43c6f R14: 00007f796b55b300 R15: 0000000000022000
 </TASK>

Crashes (11):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci-qemu-upstream 2022/05/24 12:45 upstream 143a6252e1b8 fcfad4ff .config log report info WARNING in kthread_bind_mask
ci-upstream-kasan-gce-selinux-root 2022/05/22 13:00 upstream eaea45fc0e7b 7268fa62 .config log report info WARNING in kthread_bind_mask
ci-qemu-upstream 2022/05/12 13:24 upstream feb9c5e19e91 9ad6612a .config log report info WARNING in kthread_bind_mask
ci-upstream-kasan-gce 2022/04/30 07:11 upstream 8013d1d3d2e3 ad6b95d8 .config log report info WARNING in kthread_bind_mask
ci-upstream-kasan-gce 2022/04/22 23:59 upstream d569e86915b7 131df97d .config log report info WARNING in kthread_bind_mask
ci-upstream-kasan-gce 2022/04/18 20:13 upstream b2d229d4ddb1 8bcc32a6 .config log report info WARNING in kthread_bind_mask
ci-upstream-kasan-gce 2022/04/17 15:13 upstream a2c29ccd9477 8bcc32a6 .config log report info WARNING in kthread_bind_mask
ci-upstream-kasan-gce 2022/04/04 14:06 upstream 312310928417 5915c2cb .config log report info WARNING in kthread_bind_mask
ci-upstream-kasan-gce-selinux-root 2022/02/16 18:25 upstream c5d9ae265b10 8b9ca619 .config log report info WARNING in kthread_bind_mask
ci-upstream-linux-next-kasan-gce-root 2022/05/11 02:32 linux-next 38a288f5941e 8d7b3b67 .config log report info WARNING in kthread_bind_mask
ci-upstream-linux-next-kasan-gce-root 2022/03/27 19:16 linux-next fd4fbb998102 89bc8608 .config log report info WARNING in kthread_bind_mask