BUG: soft lockup in kvm_vcpu_release
8 views
Skip to first unread message
syzbot
Dec 5, 2018, 2:01:04 PM12/5/18
to syzkaller-upst...@googlegroups.com
Hello,
syzbot found the following crash on:
HEAD commit: 0072a0c14d5b Merge tag 'media/v4.20-4' of git://git.kernel..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=107688b3400000
kernel config: https://syzkaller.appspot.com/x/.config?x=b9cc5a440391cbfd
dashboard link: https://syzkaller.appspot.com/bug?extid=fc0c2ad2e78edf7e21a3
compiler: gcc (GCC) 8.0.1 20180413 (experimental)
CC: [linux-...@vger.kernel.org lu...@kernel.org
pet...@infradead.org ri...@surriel.com tg...@linutronix.de]
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+fc0c2a...@syzkaller.appspotmail.com
vivid-000: RDS Traffic Announcement: false inactive
vivid-000: RDS Traffic Program: false inactive
vivid-000: RDS Music: false inactive
vivid-000: ================== END STATUS ==================
watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor0:7497]
Modules linked in:
irq event stamp: 34688
hardirqs last enabled at (34687): [<ffffffff81007cd1>]
trace_hardirqs_on_thunk+0x1a/0x1c
hardirqs last disabled at (34688): [<ffffffff81007ced>]
trace_hardirqs_off_thunk+0x1a/0x1c
softirqs last enabled at (4878): [<ffffffff880007df>]
__do_softirq+0x7df/0xb7e kernel/softirq.c:319
softirqs last disabled at (4785): [<ffffffff814b055f>] invoke_softirq
kernel/softirq.c:373 [inline]
softirqs last disabled at (4785): [<ffffffff814b055f>] irq_exit+0x17f/0x1c0
kernel/softirq.c:413
CPU: 1 PID: 7497 Comm: syz-executor0 Not tainted 4.20.0-rc5+ #362
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline]
RIP: 0010:smp_call_function_single+0x351/0x660 kernel/smp.c:302
Code: 24 78 84 d2 74 09 80 fa 03 0f 8e 97 02 00 00 44 89 bc 24 e0 00 00 00
41 83 e7 01 31 ff 41 c6 04 24 f8 44 89 fe e8 5f 78 0c 00 <45> 85 ff 75 a5
e8 45 77 0c 00 e8 40 77 0c 00 bf 01 00 00 00 e8 d6
RSP: 0018:ffff88817cb173a0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: ffff88817cb17418 RCX: ffffffff81732471
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffff88817cb174f0 R08: ffff8881c368a5c0 R09: ffffed103b5c5b78
R10: ffffed103b5c5b78 R11: ffff8881dae2dbc7 R12: ffffed102f962e90
R13: 1ffff1102f962e7c R14: dffffc0000000000 R15: 0000000000000001
FS: 00000000023bb940(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0779d6d000 CR3: 00000001d915a000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
loaded_vmcs_clear arch/x86/kvm/vmx.c:2248 [inline]
vmx_vcpu_load+0x8a7/0x1030 arch/x86/kvm/vmx.c:3099
kvm_arch_vcpu_load+0x1d4/0x970 arch/x86/kvm/x86.c:3195
vcpu_load+0x35/0x70 arch/x86/kvm/../../../virt/kvm/kvm_main.c:164
kvm_unload_vcpu_mmu arch/x86/kvm/x86.c:9035 [inline]
kvm_free_vcpus arch/x86/kvm/x86.c:9050 [inline]
kvm_arch_destroy_vm+0x1f9/0x7c0 arch/x86/kvm/x86.c:9150
kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:749 [inline]
kvm_put_kvm+0x6c8/0xff0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:770
kvm_vcpu_release+0x7b/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2413
__fput+0x385/0xa30 fs/file_table.c:278
____fput+0x15/0x20 fs/file_table.c:309
task_work_run+0x1e8/0x2a0 kernel/task_work.c:113
tracehook_notify_resume include/linux/tracehook.h:188 [inline]
exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166
prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x411021
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 00 00 c3 48
83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48
89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007fff604b3e00 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000411021
RDX: 0000000000000000 RSI: 00000000007316c0 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 00007fff604b3d30 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 00000000000003d4 R15: 0000000000000000
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 6288 Comm: kworker/0:3 Not tainted 4.20.0-rc5+ #362
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Workqueue: rcu_gp process_srcu
RIP: 0010:iterate_chain_key kernel/locking/lockdep.c:314 [inline]
RIP: 0010:__lock_acquire+0x7d2/0x4c20 kernel/locking/lockdep.c:3336
Code: 8d 1c 2e 44 29 e8 41 c1 c5 06 48 8b bc 24 90 00 00 00 41 31 c5 44 89
e8 45 29 ee 41 01 dd c1 c0 08 41 31 c6 44 89 f0 44 29 f3 <45> 01 ee c1 c0
10 44 89 f2 31 c3 89 d8 41 29 dd 44 01 f3 c1 c8 0d
RSP: 0018:ffff888184f5efc0 EFLAGS: 00000002
RAX: 000000002e4b23bc RBX: 00000000194fd7f2 RCX: ffff888184f52a00
RDX: 0000000022302fcb RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff888184f5f348 R08: ffff888184f52a70 R09: 0000000000000008
R10: 0000000000000050 R11: ffff888184f52180 R12: 0000000000000000
R13: 00000000dc357426 R14: 000000002e4b23bc R15: ffff888184f52a50
FS: 0000000000000000(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001bfde9000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
_raw_spin_lock_irq+0x61/0x80 kernel/locking/spinlock.c:160
spin_lock_irq include/linux/spinlock.h:354 [inline]
srcu_reschedule+0x24/0x130 kernel/rcu/srcutree.c:1231
process_srcu+0x316/0x980 kernel/rcu/srcutree.c:1257
process_one_work+0xc90/0x1c40 kernel/workqueue.c:2153
worker_thread+0x17f/0x1390 kernel/workqueue.c:2296
kthread+0x35a/0x440 kernel/kthread.c:246
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with
syzbot.
syzbot found the following crash on:
HEAD commit: 0072a0c14d5b Merge tag 'media/v4.20-4' of git://git.kernel..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=107688b3400000
kernel config: https://syzkaller.appspot.com/x/.config?x=b9cc5a440391cbfd
dashboard link: https://syzkaller.appspot.com/bug?extid=fc0c2ad2e78edf7e21a3
compiler: gcc (GCC) 8.0.1 20180413 (experimental)
CC: [linux-...@vger.kernel.org lu...@kernel.org
pet...@infradead.org ri...@surriel.com tg...@linutronix.de]
Unfortunately, I don't have any reproducer for this crash yet.
IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+fc0c2a...@syzkaller.appspotmail.com
vivid-000: RDS Traffic Announcement: false inactive
vivid-000: RDS Traffic Program: false inactive
vivid-000: RDS Music: false inactive
vivid-000: ================== END STATUS ==================
watchdog: BUG: soft lockup - CPU#1 stuck for 123s! [syz-executor0:7497]
Modules linked in:
irq event stamp: 34688
hardirqs last enabled at (34687): [<ffffffff81007cd1>]
trace_hardirqs_on_thunk+0x1a/0x1c
hardirqs last disabled at (34688): [<ffffffff81007ced>]
trace_hardirqs_off_thunk+0x1a/0x1c
softirqs last enabled at (4878): [<ffffffff880007df>]
__do_softirq+0x7df/0xb7e kernel/softirq.c:319
softirqs last disabled at (4785): [<ffffffff814b055f>] invoke_softirq
kernel/softirq.c:373 [inline]
softirqs last disabled at (4785): [<ffffffff814b055f>] irq_exit+0x17f/0x1c0
kernel/softirq.c:413
CPU: 1 PID: 7497 Comm: syz-executor0 Not tainted 4.20.0-rc5+ #362
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
RIP: 0010:csd_lock_wait kernel/smp.c:108 [inline]
RIP: 0010:smp_call_function_single+0x351/0x660 kernel/smp.c:302
Code: 24 78 84 d2 74 09 80 fa 03 0f 8e 97 02 00 00 44 89 bc 24 e0 00 00 00
41 83 e7 01 31 ff 41 c6 04 24 f8 44 89 fe e8 5f 78 0c 00 <45> 85 ff 75 a5
e8 45 77 0c 00 e8 40 77 0c 00 bf 01 00 00 00 e8 d6
RSP: 0018:ffff88817cb173a0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: ffff88817cb17418 RCX: ffffffff81732471
RDX: 0000000000000001 RSI: 0000000000000000 RDI: 0000000000000005
RBP: ffff88817cb174f0 R08: ffff8881c368a5c0 R09: ffffed103b5c5b78
R10: ffffed103b5c5b78 R11: ffff8881dae2dbc7 R12: ffffed102f962e90
R13: 1ffff1102f962e7c R14: dffffc0000000000 R15: 0000000000000001
FS: 00000000023bb940(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0779d6d000 CR3: 00000001d915a000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
loaded_vmcs_clear arch/x86/kvm/vmx.c:2248 [inline]
vmx_vcpu_load+0x8a7/0x1030 arch/x86/kvm/vmx.c:3099
kvm_arch_vcpu_load+0x1d4/0x970 arch/x86/kvm/x86.c:3195
vcpu_load+0x35/0x70 arch/x86/kvm/../../../virt/kvm/kvm_main.c:164
kvm_unload_vcpu_mmu arch/x86/kvm/x86.c:9035 [inline]
kvm_free_vcpus arch/x86/kvm/x86.c:9050 [inline]
kvm_arch_destroy_vm+0x1f9/0x7c0 arch/x86/kvm/x86.c:9150
kvm_destroy_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:749 [inline]
kvm_put_kvm+0x6c8/0xff0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:770
kvm_vcpu_release+0x7b/0xa0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:2413
__fput+0x385/0xa30 fs/file_table.c:278
____fput+0x15/0x20 fs/file_table.c:309
task_work_run+0x1e8/0x2a0 kernel/task_work.c:113
tracehook_notify_resume include/linux/tracehook.h:188 [inline]
exit_to_usermode_loop+0x318/0x380 arch/x86/entry/common.c:166
prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline]
syscall_return_slowpath arch/x86/entry/common.c:268 [inline]
do_syscall_64+0x6be/0x820 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x411021
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 34 19 00 00 c3 48
83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48
89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007fff604b3e00 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000411021
RDX: 0000000000000000 RSI: 00000000007316c0 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 00007fff604b3d30 R11: 0000000000000293 R12: 0000000000000000
R13: 0000000000000001 R14: 00000000000003d4 R15: 0000000000000000
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 6288 Comm: kworker/0:3 Not tainted 4.20.0-rc5+ #362
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
Google 01/01/2011
Workqueue: rcu_gp process_srcu
RIP: 0010:iterate_chain_key kernel/locking/lockdep.c:314 [inline]
RIP: 0010:__lock_acquire+0x7d2/0x4c20 kernel/locking/lockdep.c:3336
Code: 8d 1c 2e 44 29 e8 41 c1 c5 06 48 8b bc 24 90 00 00 00 41 31 c5 44 89
e8 45 29 ee 41 01 dd c1 c0 08 41 31 c6 44 89 f0 44 29 f3 <45> 01 ee c1 c0
10 44 89 f2 31 c3 89 d8 41 29 dd 44 01 f3 c1 c8 0d
RSP: 0018:ffff888184f5efc0 EFLAGS: 00000002
RAX: 000000002e4b23bc RBX: 00000000194fd7f2 RCX: ffff888184f52a00
RDX: 0000000022302fcb RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffff888184f5f348 R08: ffff888184f52a70 R09: 0000000000000008
R10: 0000000000000050 R11: ffff888184f52180 R12: 0000000000000000
R13: 00000000dc357426 R14: 000000002e4b23bc R15: ffff888184f52a50
FS: 0000000000000000(0000) GS:ffff8881dae00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 00000001bfde9000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x1ed/0x520 kernel/locking/lockdep.c:3844
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline]
_raw_spin_lock_irq+0x61/0x80 kernel/locking/spinlock.c:160
spin_lock_irq include/linux/spinlock.h:354 [inline]
srcu_reschedule+0x24/0x130 kernel/rcu/srcutree.c:1231
process_srcu+0x316/0x980 kernel/rcu/srcutree.c:1257
process_one_work+0xc90/0x1c40 kernel/workqueue.c:2153
worker_thread+0x17f/0x1390 kernel/workqueue.c:2296
kthread+0x35a/0x440 kernel/kthread.c:246
ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
---
This bug is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this bug report. See:
https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with
syzbot.
syzbot
Oct 24, 2019, 5:52:04 AM10/24/19
to syzkaller-upst...@googlegroups.com
Auto-closing this bug as obsolete.
Crashes did not happen for a while, no reproducer and no activity.
Crashes did not happen for a while, no reproducer and no activity.
Reply all
Reply to author
Forward
0 new messages