FAULT_INJECTION: forcing a failure.
name fail_usercopy, interval 1, probability 0, space 0, times 0
======================================================
WARNING: possible circular locking dependency detected
syzkaller #0 Not tainted
------------------------------------------------------
syz.3.1572/12438 is trying to acquire lock:
ffffffff8cd241e0 (console_owner){-.-.}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:339 [inline]
ffffffff8cd241e0 (console_owner){-.-.}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:232 [inline]
ffffffff8cd241e0 (console_owner){-.-.}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:292 [inline]
ffffffff8cd241e0 (console_owner){-.-.}-{0:0}, at: console_flush_all+0x10f/0xd00 kernel/printk/printk.c:2992
but task is already holding lock:
ffff8880b8e3c018 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xad/0x140 kernel/sched/core.c:567
which lock already depends on the new lock.
the existing dependency chain (in reverse order) is:
-> #5 (&rq->__lock){-.-.}-{2:2}:
_raw_spin_lock_nested+0x32/0x50 kernel/locking/spinlock.c:378
raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:559
raw_spin_rq_lock kernel/sched/sched.h:1379 [inline]
rq_lock kernel/sched/sched.h:1688 [inline]
task_fork_fair+0x62/0x1f0 kernel/sched/fair.c:12727
sched_cgroup_fork+0x333/0x3c0 kernel/sched/core.c:4817
copy_process+0x21e4/0x3d70 kernel/fork.c:2614
kernel_clone+0x21b/0x840 kernel/fork.c:2914
user_mode_thread+0xde/0x130 kernel/fork.c:2992
rest_init+0x27/0x300 init/main.c:709
arch_call_rest_init+0xe/0x10 init/main.c:841
start_kernel+0x459/0x4e0 init/main.c:1086
x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:555
copy_bootdata+0x0/0xe0 arch/x86/kernel/head64.c:536
secondary_startup_64_no_verify+0x179/0x17b
-> #4 (&p->pi_lock){-.-.}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xa8/0xf0 kernel/locking/spinlock.c:162
class_raw_spinlock_irqsave_constructor include/linux/spinlock.h:522 [inline]
try_to_wake_up+0x60/0x1140 kernel/sched/core.c:4233
kick_pool+0x320/0x420 kernel/workqueue.c:1146
create_worker+0x5c0/0x7b0 kernel/workqueue.c:2218
workqueue_init+0x306/0x670 kernel/workqueue.c:6736
kernel_init_freeable+0x3a0/0x570 init/main.c:1550
kernel_init+0x1d/0x1c0 init/main.c:1455
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
-> #3 (&pool->lock){-.-.}-{2:2}:
__raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
_raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
__queue_work+0x69f/0x1020 kernel/workqueue.c:1764
queue_work_on+0x121/0x1e0 kernel/workqueue.c:1835
queue_work include/linux/workqueue.h:562 [inline]
rpm_suspend+0x10bc/0x1a90 drivers/base/power/runtime.c:660
__pm_runtime_idle+0x12f/0x1a0 drivers/base/power/runtime.c:1102
pm_runtime_put include/linux/pm_runtime.h:454 [inline]
__device_attach+0x33f/0x400 drivers/base/dd.c:1048
bus_probe_device+0x180/0x260 drivers/base/bus.c:534
device_add+0x85b/0xc20 drivers/base/core.c:3683
serial_base_port_add+0x2f2/0x420 drivers/tty/serial/serial_base_bus.c:178
serial_core_port_device_add drivers/tty/serial/serial_core.c:3377 [inline]
serial_core_register_port+0x36d/0x2320 drivers/tty/serial/serial_core.c:3418
serial8250_register_8250_port+0x15ec/0x1f10 drivers/tty/serial/8250/8250_core.c:1142
serial_pnp_probe+0x549/0x730 drivers/tty/serial/8250/8250_pnp.c:478
pnp_device_probe+0x305/0x4b0 drivers/pnp/driver.c:111
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x25b/0xb40 drivers/base/dd.c:658
__driver_probe_device+0x18c/0x330 drivers/base/dd.c:800
driver_probe_device+0x4f/0x420 drivers/base/dd.c:830
__driver_attach+0x44e/0x6f0 drivers/base/dd.c:1216
bus_for_each_dev+0x22d/0x2a0 drivers/base/bus.c:370
bus_add_driver+0x340/0x640 drivers/base/bus.c:675
driver_register+0x23a/0x310 drivers/base/driver.c:246
serial8250_init+0x9a/0x170 drivers/tty/serial/8250/8250_core.c:1243
do_one_initcall+0x1fd/0x750 init/main.c:1250
do_initcall_level+0x137/0x1f0 init/main.c:1312
do_initcalls+0x69/0xd0 init/main.c:1328
kernel_init_freeable+0x3d2/0x570 init/main.c:1565
kernel_init+0x1d/0x1c0 init/main.c:1455
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
-> #2 (&dev->power.lock){-...}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xa8/0xf0 kernel/locking/spinlock.c:162
__pm_runtime_resume+0x10f/0x170 drivers/base/power/runtime.c:1169
pm_runtime_get include/linux/pm_runtime.h:402 [inline]
__uart_start+0x171/0x3e0 drivers/tty/serial/serial_core.c:148
uart_write+0x449/0x5d0 drivers/tty/serial/serial_core.c:633
process_output_block drivers/tty/n_tty.c:580 [inline]
n_tty_write+0xd27/0x11d0 drivers/tty/n_tty.c:2395
iterate_tty_write drivers/tty/tty_io.c:1017 [inline]
file_tty_write+0x54b/0x980 drivers/tty/tty_io.c:1088
call_write_iter include/linux/fs.h:2018 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x43b/0x940 fs/read_write.c:584
ksys_write+0x147/0x250 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
-> #1 (&port_lock_key){-.-.}-{2:2}:
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xa8/0xf0 kernel/locking/spinlock.c:162
serial8250_console_write+0x16d/0x17a0 drivers/tty/serial/8250/8250_port.c:3433
console_emit_next_record kernel/printk/printk.c:2944 [inline]
console_flush_all+0x6cd/0xd00 kernel/printk/printk.c:3000
console_unlock+0xae/0x340 kernel/printk/printk.c:3069
vprintk_emit+0x477/0x600 kernel/printk/printk.c:2341
_printk+0xd0/0x110 kernel/printk/printk.c:2366
register_console+0x91b/0xe60 kernel/printk/printk.c:3583
univ8250_console_init+0x45/0x50 drivers/tty/serial/8250/8250_core.c:717
console_init+0x17b/0x5e0 kernel/printk/printk.c:3726
start_kernel+0x2c0/0x4e0 init/main.c:1022
x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:555
copy_bootdata+0x0/0xe0 arch/x86/kernel/head64.c:536
secondary_startup_64_no_verify+0x179/0x17b
-> #0 (console_owner){-.-.}-{0:0}:
check_prev_add kernel/locking/lockdep.c:3134 [inline]
check_prevs_add kernel/locking/lockdep.c:3253 [inline]
validate_chain kernel/locking/lockdep.c:3869 [inline]
__lock_acquire+0x2ddb/0x7c80 kernel/locking/lockdep.c:5137
lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754
console_lock_spinning_enable kernel/printk/printk.c:1871 [inline]
console_emit_next_record kernel/printk/printk.c:2938 [inline]
console_flush_all+0x693/0xd00 kernel/printk/printk.c:3000
console_unlock+0xae/0x340 kernel/printk/printk.c:3069
vprintk_emit+0x477/0x600 kernel/printk/printk.c:2341
_printk+0xd0/0x110 kernel/printk/printk.c:2366
fail_dump lib/fault-inject.c:45 [inline]
should_fail_ex+0x37e/0x4d0 lib/fault-inject.c:153
strncpy_from_user+0x36/0x2e0 lib/strncpy_from_user.c:118
strncpy_from_user_nofault+0x71/0x140 mm/maccess.c:186
bpf_trace_copy_string kernel/bpf/helpers.c:755 [inline]
bpf_bprintf_prepare+0xb9b/0x1400 kernel/bpf/helpers.c:980
____bpf_trace_printk kernel/trace/bpf_trace.c:381 [inline]
bpf_trace_printk+0xdc/0x190 kernel/trace/bpf_trace.c:371
bpf_prog_7c77c7e0f6645ad8+0x3d/0x3f
bpf_dispatcher_nop_func include/linux/bpf.h:1224 [inline]
__bpf_prog_run include/linux/filter.h:616 [inline]
bpf_prog_run include/linux/filter.h:623 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2322 [inline]
bpf_trace_run2+0x1d1/0x3e0 kernel/trace/bpf_trace.c:2361
__bpf_trace_contention_begin+0xdd/0x130 include/trace/events/lock.h:95
trace_contention_begin+0xe9/0x110 include/trace/events/lock.h:95
__pv_queued_spin_lock_slowpath+0xe0/0x9d0 kernel/locking/qspinlock.c:405
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:586 [inline]
queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock+0x24e/0x2c0 kernel/locking/spinlock_debug.c:115
raw_spin_rq_lock_nested+0xad/0x140 kernel/sched/core.c:567
raw_spin_rq_lock kernel/sched/sched.h:1379 [inline]
rq_lock kernel/sched/sched.h:1688 [inline]
__schedule+0x2dd/0x44d0 kernel/sched/core.c:6614
preempt_schedule_irq+0xb5/0x140 kernel/sched/core.c:7010
irqentry_exit+0x67/0x70 kernel/entry/common.c:438
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:692
lock_release+0x57c/0x8b0 kernel/locking/lockdep.c:5778
might_alloc include/linux/sched/mm.h:303 [inline]
slab_pre_alloc_hook+0x2a/0x310 mm/slab.h:714
slab_alloc_node mm/slub.c:3477 [inline]
kmem_cache_alloc_node+0x60/0x330 mm/slub.c:3540
kmalloc_reserve+0x95/0x240 net/core/skbuff.c:562
__alloc_skb+0x138/0x2c0 net/core/skbuff.c:653
alloc_skb include/linux/skbuff.h:1284 [inline]
netlink_alloc_large_skb net/netlink/af_netlink.c:1184 [inline]
netlink_sendmsg+0x65b/0xbe0 net/netlink/af_netlink.c:1869
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0x5bf/0x950 net/socket.c:2594
___sys_sendmsg+0x220/0x290 net/socket.c:2648
__sys_sendmsg net/socket.c:2677 [inline]
__do_sys_sendmsg net/socket.c:2686 [inline]
__se_sys_sendmsg+0x1a5/0x270 net/socket.c:2684
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
other info that might help us debug this:
Chain exists of:
console_owner --> &p->pi_lock --> &rq->__lock
Possible unsafe locking scenario:
CPU0 CPU1
---- ----
lock(&rq->__lock);
lock(&p->pi_lock);
lock(&rq->__lock);
lock(console_owner);
*** DEADLOCK ***
5 locks held by syz.3.1572/12438:
#0: ffffffff8ce14b20 (fs_reclaim){+.+.}-{0:0}, at: might_alloc include/linux/sched/mm.h:303 [inline]
#0: ffffffff8ce14b20 (fs_reclaim){+.+.}-{0:0}, at: slab_pre_alloc_hook+0x2a/0x310 mm/slab.h:714
#1: ffff8880b8e3c018 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xad/0x140 kernel/sched/core.c:567
#2: ffffffff8cd2ffa0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#2: ffffffff8cd2ffa0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
#2: ffffffff8cd2ffa0 (rcu_read_lock){....}-{1:2}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2321 [inline]
#2: ffffffff8cd2ffa0 (rcu_read_lock){....}-{1:2}, at: bpf_trace_run2+0xde/0x3e0 kernel/trace/bpf_trace.c:2361
#3: ffffffff8cd242c0 (console_lock){+.+.}-{0:0}, at: _printk+0xd0/0x110 kernel/printk/printk.c:2366
#4: ffffffff8cc0bad0 (console_srcu){....}-{0:0}, at: rcu_try_lock_acquire include/linux/rcupdate.h:339 [inline]
#4: ffffffff8cc0bad0 (console_srcu){....}-{0:0}, at: srcu_read_lock_nmisafe include/linux/srcu.h:232 [inline]
#4: ffffffff8cc0bad0 (console_srcu){....}-{0:0}, at: console_srcu_read_lock kernel/printk/printk.c:292 [inline]
#4: ffffffff8cc0bad0 (console_srcu){....}-{0:0}, at: console_flush_all+0x10f/0xd00 kernel/printk/printk.c:2992
stack backtrace:
CPU: 0 PID: 12438 Comm: syz.3.1572 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106
check_noncircular+0x2bd/0x3c0 kernel/locking/lockdep.c:2187
check_prev_add kernel/locking/lockdep.c:3134 [inline]
check_prevs_add kernel/locking/lockdep.c:3253 [inline]
validate_chain kernel/locking/lockdep.c:3869 [inline]
__lock_acquire+0x2ddb/0x7c80 kernel/locking/lockdep.c:5137
lock_acquire+0x197/0x410 kernel/locking/lockdep.c:5754
console_lock_spinning_enable kernel/printk/printk.c:1871 [inline]
console_emit_next_record kernel/printk/printk.c:2938 [inline]
console_flush_all+0x693/0xd00 kernel/printk/printk.c:3000
console_unlock+0xae/0x340 kernel/printk/printk.c:3069
vprintk_emit+0x477/0x600 kernel/printk/printk.c:2341
_printk+0xd0/0x110 kernel/printk/printk.c:2366
fail_dump lib/fault-inject.c:45 [inline]
should_fail_ex+0x37e/0x4d0 lib/fault-inject.c:153
strncpy_from_user+0x36/0x2e0 lib/strncpy_from_user.c:118
strncpy_from_user_nofault+0x71/0x140 mm/maccess.c:186
bpf_trace_copy_string kernel/bpf/helpers.c:755 [inline]
bpf_bprintf_prepare+0xb9b/0x1400 kernel/bpf/helpers.c:980
____bpf_trace_printk kernel/trace/bpf_trace.c:381 [inline]
bpf_trace_printk+0xdc/0x190 kernel/trace/bpf_trace.c:371
bpf_prog_7c77c7e0f6645ad8+0x3d/0x3f
bpf_dispatcher_nop_func include/linux/bpf.h:1224 [inline]
__bpf_prog_run include/linux/filter.h:616 [inline]
bpf_prog_run include/linux/filter.h:623 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2322 [inline]
bpf_trace_run2+0x1d1/0x3e0 kernel/trace/bpf_trace.c:2361
__bpf_trace_contention_begin+0xdd/0x130 include/trace/events/lock.h:95
trace_contention_begin+0xe9/0x110 include/trace/events/lock.h:95
__pv_queued_spin_lock_slowpath+0xe0/0x9d0 kernel/locking/qspinlock.c:405
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:586 [inline]
queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock+0x24e/0x2c0 kernel/locking/spinlock_debug.c:115
raw_spin_rq_lock_nested+0xad/0x140 kernel/sched/core.c:567
raw_spin_rq_lock kernel/sched/sched.h:1379 [inline]
rq_lock kernel/sched/sched.h:1688 [inline]
__schedule+0x2dd/0x44d0 kernel/sched/core.c:6614
preempt_schedule_irq+0xb5/0x140 kernel/sched/core.c:7010
irqentry_exit+0x67/0x70 kernel/entry/common.c:438
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:692
RIP: 0010:lock_release+0x57c/0x8b0 kernel/locking/lockdep.c:5778
Code: 00 00 00 00 9c 8f 84 24 80 00 00 00 f6 84 24 81 00 00 00 02 75 75 f7 44 24 50 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 2f 00 00 00 00 66 43 c7 44 2f 09 00 00 43 c6 44 2f 0b 00
RSP: 0018:ffffc90004e2f6c0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 42d842b9ed229711 RCX: 75e915d8f2c8f500
RDX: 0000000000000001 RSI: ffffffff8aaace60 RDI: ffffffff8afc73a0
RBP: ffffc90004e2f7d0 R08: ffffffff8e4a39ef R09: 1ffffffff1c9473d
R10: dffffc0000000000 R11: fffffbfff1c9473e R12: ffff888021eaa908
R13: dffffc0000000000 R14: ffff888021eaa8d0 R15: 1ffff920009c5ee4
might_alloc include/linux/sched/mm.h:303 [inline]
slab_pre_alloc_hook+0x2a/0x310 mm/slab.h:714
slab_alloc_node mm/slub.c:3477 [inline]
kmem_cache_alloc_node+0x60/0x330 mm/slub.c:3540
kmalloc_reserve+0x95/0x240 net/core/skbuff.c:562
__alloc_skb+0x138/0x2c0 net/core/skbuff.c:653
alloc_skb include/linux/skbuff.h:1284 [inline]
netlink_alloc_large_skb net/netlink/af_netlink.c:1184 [inline]
netlink_sendmsg+0x65b/0xbe0 net/netlink/af_netlink.c:1869
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0x5bf/0x950 net/socket.c:2594
___sys_sendmsg+0x220/0x290 net/socket.c:2648
__sys_sendmsg net/socket.c:2677 [inline]
__do_sys_sendmsg net/socket.c:2686 [inline]
__se_sys_sendmsg+0x1a5/0x270 net/socket.c:2684
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3c1058f749
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3c1137a038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f3c107e6180 RCX: 00007f3c1058f749
RDX: 0000000000000000 RSI: 0000200000003e00 RDI: 0000000000000008
RBP: 00007f3c1137a090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f3c107e6218 R14: 00007f3c107e6180 R15: 00007ffd27302508
CPU: 0 PID: 12438 Comm: syz.3.1572 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
dump_stack_lvl+0x16c/0x230 lib/dump_stack.c:106
fail_dump lib/fault-inject.c:52 [inline]
should_fail_ex+0x39d/0x4d0 lib/fault-inject.c:153
strncpy_from_user+0x36/0x2e0 lib/strncpy_from_user.c:118
strncpy_from_user_nofault+0x71/0x140 mm/maccess.c:186
bpf_trace_copy_string kernel/bpf/helpers.c:755 [inline]
bpf_bprintf_prepare+0xb9b/0x1400 kernel/bpf/helpers.c:980
____bpf_trace_printk kernel/trace/bpf_trace.c:381 [inline]
bpf_trace_printk+0xdc/0x190 kernel/trace/bpf_trace.c:371
bpf_prog_7c77c7e0f6645ad8+0x3d/0x3f
bpf_dispatcher_nop_func include/linux/bpf.h:1224 [inline]
__bpf_prog_run include/linux/filter.h:616 [inline]
bpf_prog_run include/linux/filter.h:623 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:2322 [inline]
bpf_trace_run2+0x1d1/0x3e0 kernel/trace/bpf_trace.c:2361
__bpf_trace_contention_begin+0xdd/0x130 include/trace/events/lock.h:95
trace_contention_begin+0xe9/0x110 include/trace/events/lock.h:95
__pv_queued_spin_lock_slowpath+0xe0/0x9d0 kernel/locking/qspinlock.c:405
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:586 [inline]
queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock+0x24e/0x2c0 kernel/locking/spinlock_debug.c:115
raw_spin_rq_lock_nested+0xad/0x140 kernel/sched/core.c:567
raw_spin_rq_lock kernel/sched/sched.h:1379 [inline]
rq_lock kernel/sched/sched.h:1688 [inline]
__schedule+0x2dd/0x44d0 kernel/sched/core.c:6614
preempt_schedule_irq+0xb5/0x140 kernel/sched/core.c:7010
irqentry_exit+0x67/0x70 kernel/entry/common.c:438
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:692
RIP: 0010:lock_release+0x57c/0x8b0 kernel/locking/lockdep.c:5778
Code: 00 00 00 00 9c 8f 84 24 80 00 00 00 f6 84 24 81 00 00 00 02 75 75 f7 44 24 50 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 2f 00 00 00 00 66 43 c7 44 2f 09 00 00 43 c6 44 2f 0b 00
RSP: 0018:ffffc90004e2f6c0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 42d842b9ed229711 RCX: 75e915d8f2c8f500
RDX: 0000000000000001 RSI: ffffffff8aaace60 RDI: ffffffff8afc73a0
RBP: ffffc90004e2f7d0 R08: ffffffff8e4a39ef R09: 1ffffffff1c9473d
R10: dffffc0000000000 R11: fffffbfff1c9473e R12: ffff888021eaa908
R13: dffffc0000000000 R14: ffff888021eaa8d0 R15: 1ffff920009c5ee4
might_alloc include/linux/sched/mm.h:303 [inline]
slab_pre_alloc_hook+0x2a/0x310 mm/slab.h:714
slab_alloc_node mm/slub.c:3477 [inline]
kmem_cache_alloc_node+0x60/0x330 mm/slub.c:3540
kmalloc_reserve+0x95/0x240 net/core/skbuff.c:562
__alloc_skb+0x138/0x2c0 net/core/skbuff.c:653
alloc_skb include/linux/skbuff.h:1284 [inline]
netlink_alloc_large_skb net/netlink/af_netlink.c:1184 [inline]
netlink_sendmsg+0x65b/0xbe0 net/netlink/af_netlink.c:1869
sock_sendmsg_nosec net/socket.c:730 [inline]
__sock_sendmsg net/socket.c:745 [inline]
____sys_sendmsg+0x5bf/0x950 net/socket.c:2594
___sys_sendmsg+0x220/0x290 net/socket.c:2648
__sys_sendmsg net/socket.c:2677 [inline]
__do_sys_sendmsg net/socket.c:2686 [inline]
__se_sys_sendmsg+0x1a5/0x270 net/socket.c:2684
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3c1058f749
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3c1137a038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f3c107e6180 RCX: 00007f3c1058f749
RDX: 0000000000000000 RSI: 0000200000003e00 RDI: 0000000000000008
RBP: 00007f3c1137a090 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 00007f3c107e6218 R14: 00007f3c107e6180 R15: 00007ffd27302508
----------------
Code disassembly (best guess):
0: 00 00 add %al,(%rax)
2: 00 00 add %al,(%rax)
4: 9c pushf
5: 8f 84 24 80 00 00 00 pop 0x80(%rsp)
c: f6 84 24 81 00 00 00 testb $0x2,0x81(%rsp)
13: 02
14: 75 75 jne 0x8b
16: f7 44 24 50 00 02 00 testl $0x200,0x50(%rsp)
1d: 00
1e: 74 01 je 0x21
20: fb sti
21: 48 c7 44 24 60 0e 36 movq $0x45e0360e,0x60(%rsp)
28: e0 45
* 2a: 4b c7 04 2f 00 00 00 movq $0x0,(%r15,%r13,1) <-- trapping instruction
31: 00
32: 66 43 c7 44 2f 09 00 movw $0x0,0x9(%r15,%r13,1)
39: 00
3a: 43 c6 44 2f 0b 00 movb $0x0,0xb(%r15,%r13,1)