Extracting prog: 5m2.774837198s
Minimizing prog: 41m17.083860528s
Simplifying prog options: 9m58.995242665s
Extracting C: 2m49.673570027s
Simplifying C: 0s
extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mknod-mount
detailed listing:
executing program 0:
mknod(&(0x7f0000000200)='./file0\x00', 0x400, 0x10001)
mount(&(0x7f0000000040)=@nbd={'/dev/nbd', 0x0}, &(0x7f00000000c0)='./file0\x00', &(0x7f0000000080)='xfs\x00', 0x0, 0x0)
program did not crash
program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 6m0s
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mknod-mount
detailed listing:
executing program 0:
mknod(&(0x7f0000000200)='./file0\x00', 0x400, 0x10001)
mount(&(0x7f0000000040)=@nbd={'/dev/nbd', 0x0}, &(0x7f00000000c0)='./file0\x00', &(0x7f0000000080)='xfs\x00', 0x0, 0x0)
program crashed: WARNING in print_bfs_bug
single: successfully extracted reproducer
found reproducer with 2 syscalls
minimizing guilty program
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mknod
detailed listing:
executing program 0:
mknod(&(0x7f0000000200)='./file0\x00', 0x400, 0x10001)
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mount
detailed listing:
executing program 0:
mount(&(0x7f0000000040)=@nbd={'/dev/nbd', 0x0}, &(0x7f00000000c0)='./file0\x00', &(0x7f0000000080)='xfs\x00', 0x0, 0x0)
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mknod-mount
detailed listing:
executing program 0:
mknod(0x0, 0x400, 0x10001)
mount(&(0x7f0000000040)=@nbd={'/dev/nbd', 0x0}, &(0x7f00000000c0)='./file0\x00', &(0x7f0000000080)='xfs\x00', 0x0, 0x0)
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mknod-mount
detailed listing:
executing program 0:
mknod(&(0x7f0000000200)='./file0\x00', 0x400, 0x10001)
mount(0x0, &(0x7f00000000c0)='./file0\x00', &(0x7f0000000080)='xfs\x00', 0x0, 0x0)
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mknod-mount
detailed listing:
executing program 0:
mknod(&(0x7f0000000200)='./file0\x00', 0x400, 0x10001)
mount(&(0x7f0000000040)=@nbd={'/dev/nbd', 0x0}, 0x0, &(0x7f0000000080)='xfs\x00', 0x0, 0x0)
program did not crash
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mknod-mount
detailed listing:
executing program 0:
mknod(&(0x7f0000000200)='./file0\x00', 0x400, 0x10001)
mount(&(0x7f0000000040)=@nbd={'/dev/nbd', 0x0}, &(0x7f00000000c0)='./file0\x00', 0x0, 0x0, 0x0)
program did not crash
extracting C reproducer
testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mknod-mount
program crashed: BUG: MAX_LOCKDEP_KEYS too low!
a never seen crash title: BUG: MAX_LOCKDEP_KEYS too low!, ignore
simplifying guilty program options
testing program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mknod-mount
detailed listing:
executing program 0:
mknod(&(0x7f0000000200)='./file0\x00', 0x400, 0x10001)
mount(&(0x7f0000000040)=@nbd={'/dev/nbd', 0x0}, &(0x7f00000000c0)='./file0\x00', &(0x7f0000000080)='xfs\x00', 0x0, 0x0)
program crashed: BUG: MAX_LOCKDEP_KEYS too low!
a never seen crash title: BUG: MAX_LOCKDEP_KEYS too low!, ignore
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mknod-mount
detailed listing:
executing program 0:
mknod(&(0x7f0000000200)='./file0\x00', 0x400, 0x10001)
mount(&(0x7f0000000040)=@nbd={'/dev/nbd', 0x0}, &(0x7f00000000c0)='./file0\x00', &(0x7f0000000080)='xfs\x00', 0x0, 0x0)
program crashed: lost connection to test machine
suppressed program crash: lost connection to test machine
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mknod-mount
detailed listing:
executing program 0:
mknod(&(0x7f0000000200)='./file0\x00', 0x400, 0x10001)
mount(&(0x7f0000000040)=@nbd={'/dev/nbd', 0x0}, &(0x7f00000000c0)='./file0\x00', &(0x7f0000000080)='xfs\x00', 0x0, 0x0)
program crashed: BUG: MAX_LOCKDEP_KEYS too low!
validation run: crashed=true
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mknod-mount
detailed listing:
executing program 0:
mknod(&(0x7f0000000200)='./file0\x00', 0x400, 0x10001)
mount(&(0x7f0000000040)=@nbd={'/dev/nbd', 0x0}, &(0x7f00000000c0)='./file0\x00', &(0x7f0000000080)='xfs\x00', 0x0, 0x0)
program crashed: WARNING in print_bfs_bug
validation run: crashed=true
testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mknod-mount
detailed listing:
executing program 0:
mknod(&(0x7f0000000200)='./file0\x00', 0x400, 0x10001)
mount(&(0x7f0000000040)=@nbd={'/dev/nbd', 0x0}, &(0x7f00000000c0)='./file0\x00', &(0x7f0000000080)='xfs\x00', 0x0, 0x0)
program crashed: WARNING in print_bfs_bug
validation run: crashed=true
reproducing took 1h13m26.561913824s
repro crashed as (corrupted=false):
Increase LOCKDEP_CIRCULAR_QUEUE_BITS to avoid this warning:
------------[ cut here ]------------
lockdep bfs error:-1
WARNING: kernel/locking/lockdep.c:2059 at print_bfs_bug+0x20/0x40 kernel/locking/lockdep.c:2059, CPU#0: syz.0.976/12741
Modules linked in:
CPU: 0 UID: 0 PID: 12741 Comm: syz.0.976 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:print_bfs_bug+0x22/0x40 kernel/locking/lockdep.c:2059
Code: 90 90 90 90 90 90 90 90 55 53 89 fb e8 b7 a2 1d 03 89 c5 e8 c0 89 ff ff 85 ed 74 13 83 fb ff 74 16 48 8d 3d 50 c9 11 0e 89 de <67> 48 0f b9 3a 5b 5d c3 cc cc cc cc cc 48 c7 c7 47 a2 a0 8d e8 55
RSP: 0018:ffffc9000fbb70a8 EFLAGS: 00010046
RAX: 000000000000003b RBX: 00000000ffffffff RCX: b36e55692ff66200
RDX: 0000000040000000 RSI: 00000000ffffffff RDI: ffffffff8fb2ecc0
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52001f76dc5 R12: 000000000000003d
R13: ffffffff934eaf48 R14: ffff888059881f00 R15: ffffffff96425938
FS: 00007f18f303e6c0(0000) GS:ffff888125c46000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f623726da08 CR3: 00000000582d0000 CR4: 00000000003526f0
Call Trace:
check_irq_usage kernel/locking/lockdep.c:-1 [inline]
check_prev_add kernel/locking/lockdep.c:3169 [inline]
check_prevs_add kernel/locking/lockdep.c:3284 [inline]
validate_chain kernel/locking/lockdep.c:3908 [inline]
__lock_acquire+0x24f0/0x2ce0 kernel/locking/lockdep.c:5237
lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868
seqcount_lockdep_reader_access+0x55/0x100 include/linux/seqlock.h:73
ktime_get+0x45/0x220 kernel/time/timekeeping.c:971
clockevents_program_event+0x290/0x630 kernel/time/clockevents.c:363
hrtimer_rearm kernel/time/hrtimer.c:2141 [inline]
__hrtimer_rearm_deferred+0x26f/0x430 kernel/time/hrtimer.c:2161
hrtimer_rearm_deferred_tif include/linux/hrtimer_rearm.h:53 [inline]
hrtimer_rearm_deferred include/linux/hrtimer_rearm.h:62 [inline]
irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:505 [inline]
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:542 [inline]
irqentry_exit+0x8b7/0x8f0 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:finish_task_switch+0x417/0xc60 kernel/sched/core.c:5361
Code: 04 00 00 41 c7 84 24 20 0e 00 00 00 00 00 00 0f 1f 44 00 00 49 83 c4 48 4c 89 e7 e8 b3 58 b1 09 e8 5e bd 38 00 fb 4c 8b 65 c8 <49> 8d bc 24 e0 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0
RSP: 0018:ffffc9000fbb7500 EFLAGS: 00000202
RAX: 000000000000096d RBX: ffff8880b863c6e0 RCX: 0000000080000001
RDX: 0000000000000006 RSI: ffffffff8d882ff5 RDI: ffffffff8bca6480
RBP: ffffc9000fbb7550 R08: ffffffff8faf8af7 R09: 1ffffffff1f5f15e
R10: dffffc0000000000 R11: fffffbfff1f5f15f R12: ffff888059881f00
R13: ffff8880b863c6a8 R14: dffffc0000000000 R15: 1ffff110170c78dc
context_switch kernel/sched/core.c:5513 [inline]
__schedule+0x16e4/0x5500 kernel/sched/core.c:7234
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7556
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x8f0 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x221/0x350 kernel/locking/lockdep.c:5872
Code: ff ff ff e8 61 bc a1 09 f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 2b d7 fc 10 48 3b 44 24 58 75 33 fb 48 83 c4 60 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 d0 85 a5 09 cc 48 8d 3d b8 1d 12
RSP: 0018:ffffc9000fbb7888 EFLAGS: 00000286
RAX: b36e55692ff66200 RBX: 0000000000000000 RCX: 0000000000000046
RDX: ffffffff935dbc68 RSI: ffffffff8daf28d7 RDI: ffffffff8bca6480
RBP: ffffffff818d7b05 R08: 0000000000000008 R09: ffffffff95d14b30
R10: 00000000dbe0c897 R11: 0000000091d577b2 R12: 0000000000000000
R13: ffff88805ab4cd38 R14: 0000000000000001 R15: 0000000000000246
touch_wq_lockdep_map+0xcb/0x180 kernel/workqueue.c:4037
__flush_workqueue+0x148/0x1470 kernel/workqueue.c:4079
drain_workqueue+0xce/0x380 kernel/workqueue.c:4243
destroy_workqueue+0xbb/0xc60 kernel/workqueue.c:6068
xfs_destroy_mount_workqueues+0xad/0x100 fs/xfs/xfs_super.c:656
xfs_fs_fill_super+0x679/0x15a0 fs/xfs/xfs_super.c:1972
get_tree_bdev_flags+0x430/0x4f0 fs/super.c:1634
vfs_get_tree+0x92/0x2a0 fs/super.c:1694
fc_mount fs/namespace.c:1198 [inline]
do_new_mount_fc fs/namespace.c:3765 [inline]
do_new_mount+0x319/0xdc0 fs/namespace.c:3841
do_mount fs/namespace.c:4174 [inline]
__do_sys_mount fs/namespace.c:4390 [inline]
__se_sys_mount+0x31d/0x420 fs/namespace.c:4367
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f18f39dde99
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f18f303e028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f18f3c65fa0 RCX: 00007f18f39dde99
RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000200000000040
RBP: 00007f18f3a73eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f18f3c66038 R14: 00007f18f3c65fa0 R15: 00007ffe691b5318
----------------
Code disassembly (best guess):
0: 90 nop
1: 90 nop
2: 90 nop
3: 90 nop
4: 90 nop
5: 90 nop
6: 90 nop
7: 90 nop
8: 55 push %rbp
9: 53 push %rbx
a: 89 fb mov %edi,%ebx
c: e8 b7 a2 1d 03 call 0x31da2c8
11: 89 c5 mov %eax,%ebp
13: e8 c0 89 ff ff call 0xffff89d8
18: 85 ed test %ebp,%ebp
1a: 74 13 je 0x2f
1c: 83 fb ff cmp $0xffffffff,%ebx
1f: 74 16 je 0x37
21: 48 8d 3d 50 c9 11 0e lea 0xe11c950(%rip),%rdi # 0xe11c978
28: 89 de mov %ebx,%esi
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: 5b pop %rbx
30: 5d pop %rbp
31: c3 ret
32: cc int3
33: cc int3
34: cc int3
35: cc int3
36: cc int3
37: 48 c7 c7 47 a2 a0 8d mov $0xffffffff8da0a247,%rdi
3e: e8 .byte 0xe8
3f: 55 push %rbp
final repro crashed as (corrupted=false):
Increase LOCKDEP_CIRCULAR_QUEUE_BITS to avoid this warning:
------------[ cut here ]------------
lockdep bfs error:-1
WARNING: kernel/locking/lockdep.c:2059 at print_bfs_bug+0x20/0x40 kernel/locking/lockdep.c:2059, CPU#0: syz.0.976/12741
Modules linked in:
CPU: 0 UID: 0 PID: 12741 Comm: syz.0.976 Not tainted syzkaller #0 PREEMPT_{RT,(full)}
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:print_bfs_bug+0x22/0x40 kernel/locking/lockdep.c:2059
Code: 90 90 90 90 90 90 90 90 55 53 89 fb e8 b7 a2 1d 03 89 c5 e8 c0 89 ff ff 85 ed 74 13 83 fb ff 74 16 48 8d 3d 50 c9 11 0e 89 de <67> 48 0f b9 3a 5b 5d c3 cc cc cc cc cc 48 c7 c7 47 a2 a0 8d e8 55
RSP: 0018:ffffc9000fbb70a8 EFLAGS: 00010046
RAX: 000000000000003b RBX: 00000000ffffffff RCX: b36e55692ff66200
RDX: 0000000040000000 RSI: 00000000ffffffff RDI: ffffffff8fb2ecc0
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffff52001f76dc5 R12: 000000000000003d
R13: ffffffff934eaf48 R14: ffff888059881f00 R15: ffffffff96425938
FS: 00007f18f303e6c0(0000) GS:ffff888125c46000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f623726da08 CR3: 00000000582d0000 CR4: 00000000003526f0
Call Trace:
check_irq_usage kernel/locking/lockdep.c:-1 [inline]
check_prev_add kernel/locking/lockdep.c:3169 [inline]
check_prevs_add kernel/locking/lockdep.c:3284 [inline]
validate_chain kernel/locking/lockdep.c:3908 [inline]
__lock_acquire+0x24f0/0x2ce0 kernel/locking/lockdep.c:5237
lock_acquire+0x106/0x350 kernel/locking/lockdep.c:5868
seqcount_lockdep_reader_access+0x55/0x100 include/linux/seqlock.h:73
ktime_get+0x45/0x220 kernel/time/timekeeping.c:971
clockevents_program_event+0x290/0x630 kernel/time/clockevents.c:363
hrtimer_rearm kernel/time/hrtimer.c:2141 [inline]
__hrtimer_rearm_deferred+0x26f/0x430 kernel/time/hrtimer.c:2161
hrtimer_rearm_deferred_tif include/linux/hrtimer_rearm.h:53 [inline]
hrtimer_rearm_deferred include/linux/hrtimer_rearm.h:62 [inline]
irqentry_exit_to_kernel_mode_after_preempt include/linux/irq-entry-common.h:505 [inline]
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:542 [inline]
irqentry_exit+0x8b7/0x8f0 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:finish_task_switch+0x417/0xc60 kernel/sched/core.c:5361
Code: 04 00 00 41 c7 84 24 20 0e 00 00 00 00 00 00 0f 1f 44 00 00 49 83 c4 48 4c 89 e7 e8 b3 58 b1 09 e8 5e bd 38 00 fb 4c 8b 65 c8 <49> 8d bc 24 e0 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0
RSP: 0018:ffffc9000fbb7500 EFLAGS: 00000202
RAX: 000000000000096d RBX: ffff8880b863c6e0 RCX: 0000000080000001
RDX: 0000000000000006 RSI: ffffffff8d882ff5 RDI: ffffffff8bca6480
RBP: ffffc9000fbb7550 R08: ffffffff8faf8af7 R09: 1ffffffff1f5f15e
R10: dffffc0000000000 R11: fffffbfff1f5f15f R12: ffff888059881f00
R13: ffff8880b863c6a8 R14: dffffc0000000000 R15: 1ffff110170c78dc
context_switch kernel/sched/core.c:5513 [inline]
__schedule+0x16e4/0x5500 kernel/sched/core.c:7234
preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7556
irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:539 [inline]
irqentry_exit+0x14f/0x8f0 kernel/entry/common.c:167
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:lock_acquire+0x221/0x350 kernel/locking/lockdep.c:5872
Code: ff ff ff e8 61 bc a1 09 f7 44 24 08 00 02 00 00 0f 84 3a ff ff ff 65 48 8b 05 2b d7 fc 10 48 3b 44 24 58 75 33 fb 48 83 c4 60 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 d0 85 a5 09 cc 48 8d 3d b8 1d 12
RSP: 0018:ffffc9000fbb7888 EFLAGS: 00000286
RAX: b36e55692ff66200 RBX: 0000000000000000 RCX: 0000000000000046
RDX: ffffffff935dbc68 RSI: ffffffff8daf28d7 RDI: ffffffff8bca6480
RBP: ffffffff818d7b05 R08: 0000000000000008 R09: ffffffff95d14b30
R10: 00000000dbe0c897 R11: 0000000091d577b2 R12: 0000000000000000
R13: ffff88805ab4cd38 R14: 0000000000000001 R15: 0000000000000246
touch_wq_lockdep_map+0xcb/0x180 kernel/workqueue.c:4037
__flush_workqueue+0x148/0x1470 kernel/workqueue.c:4079
drain_workqueue+0xce/0x380 kernel/workqueue.c:4243
destroy_workqueue+0xbb/0xc60 kernel/workqueue.c:6068
xfs_destroy_mount_workqueues+0xad/0x100 fs/xfs/xfs_super.c:656
xfs_fs_fill_super+0x679/0x15a0 fs/xfs/xfs_super.c:1972
get_tree_bdev_flags+0x430/0x4f0 fs/super.c:1634
vfs_get_tree+0x92/0x2a0 fs/super.c:1694
fc_mount fs/namespace.c:1198 [inline]
do_new_mount_fc fs/namespace.c:3765 [inline]
do_new_mount+0x319/0xdc0 fs/namespace.c:3841
do_mount fs/namespace.c:4174 [inline]
__do_sys_mount fs/namespace.c:4390 [inline]
__se_sys_mount+0x31d/0x420 fs/namespace.c:4367
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f18f39dde99
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f18f303e028 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f18f3c65fa0 RCX: 00007f18f39dde99
RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 0000200000000040
RBP: 00007f18f3a73eaf R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f18f3c66038 R14: 00007f18f3c65fa0 R15: 00007ffe691b5318
----------------
Code disassembly (best guess):
0: 90 nop
1: 90 nop
2: 90 nop
3: 90 nop
4: 90 nop
5: 90 nop
6: 90 nop
7: 90 nop
8: 55 push %rbp
9: 53 push %rbx
a: 89 fb mov %edi,%ebx
c: e8 b7 a2 1d 03 call 0x31da2c8
11: 89 c5 mov %eax,%ebp
13: e8 c0 89 ff ff call 0xffff89d8
18: 85 ed test %ebp,%ebp
1a: 74 13 je 0x2f
1c: 83 fb ff cmp $0xffffffff,%ebx
1f: 74 16 je 0x37
21: 48 8d 3d 50 c9 11 0e lea 0xe11c950(%rip),%rdi # 0xe11c978
28: 89 de mov %ebx,%esi
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: 5b pop %rbx
30: 5d pop %rbp
31: c3 ret
32: cc int3
33: cc int3
34: cc int3
35: cc int3
36: cc int3
37: 48 c7 c7 47 a2 a0 8d mov $0xffffffff8da0a247,%rdi
3e: e8 .byte 0xe8
3f: 55 push %rbp