syzbot


INFO: task hung in uevent_store (2)

Status: auto-obsoleted due to no activity on 2025/09/13 07:28
Subsystems: kernel
[Documentation on labels]
First crash: 95d, last: 95d
Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.19 INFO: task hung in uevent_store 1 1 981d 981d 0/1 upstream: reported on 2023/01/11 08:32
upstream INFO: task hung in uevent_store kernel 1 13 325d 510d 0/29 auto-obsoleted due to no activity on 2025/01/25 20:40

Sample crash report:
INFO: task udevd:2844 blocked for more than 143 seconds.
      Not tainted 6.16.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:udevd           state:D
 stack:24520 pid:2844  tgid:2844  ppid:1      task_flags:0x400140 flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5396 [inline]
 __schedule+0x132a/0x3b10 kernel/sched/core.c:6785
 __schedule_loop kernel/sched/core.c:6863 [inline]
 schedule+0xe7/0x3a0 kernel/sched/core.c:6878
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6935
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x6c7/0xb90 kernel/locking/mutex.c:747
 uevent_net_broadcast_untagged lib/kobject_uevent.c:317 [inline]
 kobject_uevent_net_broadcast lib/kobject_uevent.c:410 [inline]
 kobject_uevent_env+0xb36/0x1870 lib/kobject_uevent.c:608
 kobject_synth_uevent+0x7d4/0x8a0 lib/kobject_uevent.c:207
 uevent_store+0x24/0x80 drivers/base/core.c:2776
 dev_attr_store+0x58/0x80 drivers/base/core.c:2440
 sysfs_kf_write+0xef/0x150 fs/sysfs/file.c:145
 kernfs_fop_write_iter+0x354/0x510 fs/kernfs/file.c:334
 new_sync_write fs/read_write.c:593 [inline]
 vfs_write+0x6c4/0x1150 fs/read_write.c:686
 ksys_write+0x12a/0x250 fs/read_write.c:738
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd5c25db407
RSP: 002b:00007ffe40006560 EFLAGS: 00000202 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fd5c24ed880 RCX: 00007fd5c25db407
RDX: 0000000000000007 RSI: 0000561419c1e340 RDI: 000000000000000c
RBP: 0000561419c1e340 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000007
R13: 0000561419b68a10 R14: 00007fd5c2723ea0 R15: 00007ffe400068a0
 </TASK>
INFO: task syz.6.1387:12551 blocked for more than 144 seconds.
      Not tainted 6.16.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.6.1387      state:D
 stack:29448 pid:12551 tgid:12547 ppid:9938   task_flags:0x400040 flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5396 [inline]
 __schedule+0x132a/0x3b10 kernel/sched/core.c:6785
 __schedule_loop kernel/sched/core.c:6863 [inline]
 schedule+0xe7/0x3a0 kernel/sched/core.c:6878
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6935
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0x6c7/0xb90 kernel/locking/mutex.c:747
 device_lock include/linux/device.h:884 [inline]
 __device_driver_lock drivers/base/dd.c:1094 [inline]
 __driver_attach+0x278/0x580 drivers/base/dd.c:1214
 bus_for_each_dev+0x13b/0x1d0 drivers/base/bus.c:370
 bus_add_driver+0x2e9/0x690 drivers/base/bus.c:678
 driver_register+0x15c/0x4b0 drivers/base/driver.c:249
 usb_gadget_register_driver_owner+0x132/0x330 drivers/usb/gadget/udc/core.c:1700
 raw_ioctl_run drivers/usb/gadget/legacy/raw_gadget.c:595 [inline]
 raw_ioctl+0x17d0/0x2c30 drivers/usb/gadget/legacy/raw_gadget.c:1306
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl fs/ioctl.c:893 [inline]
 __x64_sys_ioctl+0x18b/0x210 fs/ioctl.c:893
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9ef6c0e52b
RSP: 002b:00007f9ef5253f10 EFLAGS: 00000246
 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f9ef6c0e52b
RDX: 0000000000000000 RSI: 0000000000005501 RDI: 0000000000000004
RBP: 00007f9ef5254fe0 R08: 0000000000000000 R09: 00362e6364755f79
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9ef5253fb0 R14: 0000200000000000 R15: 00007f9ef6f60b88
 </TASK>

Showing all locks held in the system:
4 locks held by kworker/u8:0/12:
 #0: ffff888100ac3948
 (
(wq_completion)netns
){+.+.}-{0:0}
, at: process_one_work+0x12a2/0x1b70 kernel/workqueue.c:3213
 #1: 
ffffc900000cfd10 (
net_cleanup_work
){+.+.}-{0:0}
, at: process_one_work+0x929/0x1b70 kernel/workqueue.c:3214
 #2: ffffffff8a3be810
 (
pernet_ops_rwsem
){++++}-{4:4}
, at: cleanup_net+0xad/0x890 net/core/net_namespace.c:662
 #3: 
ffffffff890d3378
 (rcu_state.exp_mutex
){+.+.}-{4:4}
, at: exp_funnel_lock+0x284/0x3c0 kernel/rcu/tree_exp.h:304
1 lock held by khungtaskd/30:
 #0: ffffffff890c7d80
 (
rcu_read_lock
){....}-{1:3}
, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
, at: debug_show_all_locks+0x36/0x1c0 kernel/locking/lockdep.c:6770
5 locks held by kworker/0:2/698:
2 locks held by getty/2908:
 #0: ffff8881123030a0
 (
&tty->ldisc_sem
){++++}-{0:0}
, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
 #1: 
ffffc900000432f0
 (&ldata->atomic_read_lock
){+.+.}-{4:4}
, at: n_tty_read+0x41b/0x14f0 drivers/tty/n_tty.c:2222
3 locks held by kworker/1:3/5236:
 #0: 
ffff888100080d48
 ((wq_completion)events){+.+.}-{0:0}
, at: process_one_work+0x12a2/0x1b70 kernel/workqueue.c:3213
 #1: ffffc900022afd10
 (free_ipc_work
){+.+.}-{0:0}
, at: process_one_work+0x929/0x1b70 kernel/workqueue.c:3214
 #2: ffffffff890d3378 (rcu_state.exp_mutex
){+.+.}-{4:4}
, at: exp_funnel_lock+0x1a3/0x3c0 kernel/rcu/tree_exp.h:336
3 locks held by kworker/0:5/5287:
6 locks held by kworker/0:6/5288:
 #0: 
ffff8881066eb948
 (
(wq_completion)usb_hub_wq
){+.+.}-{0:0}
, at: process_one_work+0x12a2/0x1b70 kernel/workqueue.c:3213
 #1: 
ffffc9000247fd10
 (
(work_completion)(&hub->events)
){+.+.}-{0:0}
, at: process_one_work+0x929/0x1b70 kernel/workqueue.c:3214
 #2: 
ffff88810bb4f198
 (
&dev->mutex
){....}-{4:4}
, at: device_lock include/linux/device.h:884 [inline]
, at: hub_event+0x1be/0x5030 drivers/usb/core/hub.c:5863
 #3: 
ffff888133259198
 (
&dev->mutex){....}-{4:4}
, at: device_lock include/linux/device.h:884 [inline]
, at: usb_disconnect+0x10a/0x920 drivers/usb/core/hub.c:2307
 #4: ffff8881221a9160
 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:884 [inline]
 (&dev->mutex){....}-{4:4}, at: __device_driver_lock drivers/base/dd.c:1094 [inline]
 (&dev->mutex){....}-{4:4}, at: device_release_driver_internal+0xa4/0x620 drivers/base/dd.c:1292
 #5: 
ffffffff89e0bb08 (input_mutex){+.+.}-{4:4}
, at: class_mutex_constructor include/linux/mutex.h:225 [inline]
, at: __input_unregister_device+0x156/0x470 drivers/input/input.c:2221
3 locks held by kworker/1:6/5339:
5 locks held by kworker/0:0/8204:
 #0: 
ffff8881066eb948 ((wq_completion)usb_hub_wq){+.+.}-{0:0}
, at: process_one_work+0x12a2/0x1b70 kernel/workqueue.c:3213
 #1: ffffc90001d4fd10 ((work_completion)(&hub->events)){+.+.}-{0:0}
, at: process_one_work+0x929/0x1b70 kernel/workqueue.c:3214
 #2: ffff88810bb38198 (&dev->mutex){....}-{4:4}
, at: device_lock include/linux/device.h:884 [inline]
, at: hub_event+0x1be/0x5030 drivers/usb/core/hub.c:5863
 #3: ffff88810bb3a508 (&port_dev->status_lock){+.+.}-{4:4}
, at: usb_lock_port drivers/usb/core/hub.c:3220 [inline]
, at: hub_port_connect drivers/usb/core/hub.c:5432 [inline]
, at: hub_port_connect_change drivers/usb/core/hub.c:5675 [inline]
, at: port_event drivers/usb/core/hub.c:5835 [inline]
, at: hub_event+0x29da/0x5030 drivers/usb/core/hub.c:5917
 #4: ffff88810b3c1c68
 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_port_connect drivers/usb/core/hub.c:5433 [inline]
 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_port_connect_change drivers/usb/core/hub.c:5675 [inline]
 (hcd->address0_mutex){+.+.}-{4:4}, at: port_event drivers/usb/core/hub.c:5835 [inline]
 (hcd->address0_mutex){+.+.}-{4:4}, at: hub_event+0x2a00/0x5030 drivers/usb/core/hub.c:5917
4 locks held by udevd/12228:
 #0: ffff888126d43c30 (&p->lock){+.+.}-{4:4}
, at: seq_read_iter+0xe1/0x12c0 fs/seq_file.c:182
 #1: ffff88811dec9488 (&of->mutex#2){+.+.}-{4:4}
, at: kernfs_seq_start+0x4d/0x240 fs/kernfs/file.c:154
 #2: ffff88812830c788 (kn->active#23
){++++}-{0:0}
, at: kernfs_seq_start+0x71/0x240 fs/kernfs/file.c:155
 #3: 
ffff888133259198 (&dev->mutex){....}-{4:4}, at: device_lock_interruptible include/linux/device.h:889 [inline]
ffff888133259198 (&dev->mutex){....}-{4:4}, at: manufacturer_show+0x26/0xa0 drivers/usb/core/sysfs.c:142
1 lock held by syz-executor/12559:
 #0: ffffffff8a3be810 (pernet_ops_rwsem){++++}-{4:4}
, at: copy_net_ns+0x286/0x5f0 net/core/net_namespace.c:570
1 lock held by syz-executor/12561:
 #0: ffffffff8a3be810 (
pernet_ops_rwsem
){++++}-{4:4}, at: copy_net_ns+0x286/0x5f0 net/core/net_namespace.c:570
1 lock held by syz-executor/12563:
 #0: ffffffff8a3be810 (pernet_ops_rwsem){++++}-{4:4}
, at: copy_net_ns+0x286/0x5f0 net/core/net_namespace.c:570
1 lock held by syz-executor/12566:
 #0: ffffffff8a3be810
 (
pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x286/0x5f0 net/core/net_namespace.c:570
1 lock held by syz-executor/12571:
 #0: ffffffff8a3be810 (pernet_ops_rwsem
){++++}-{4:4}
, at: copy_net_ns+0x286/0x5f0 net/core/net_namespace.c:570
1 lock held by syz-executor/12609:
 #0: ffffffff8a3be810
 (
pernet_ops_rwsem
){++++}-{4:4}
, at: copy_net_ns+0x286/0x5f0 net/core/net_namespace.c:570
1 lock held by syz-executor/12611:
 #0: ffffffff8a3be810
 (
pernet_ops_rwsem
){++++}-{4:4}
, at: copy_net_ns+0x286/0x5f0 net/core/net_namespace.c:570
1 lock held by syz-executor/12613:
 #0: 
ffffffff8a3be810
 (pernet_ops_rwsem
){++++}-{4:4}, at: copy_net_ns+0x286/0x5f0 net/core/net_namespace.c:570
1 lock held by syz-executor/12616:
 #0: 
ffffffff8a3be810
 (pernet_ops_rwsem
){++++}-{4:4}
, at: copy_net_ns+0x286/0x5f0 net/core/net_namespace.c:570
2 locks held by syz-executor/12619:
 #0: ffffffff8a3be810
 (pernet_ops_rwsem
){++++}-{4:4}
, at: copy_net_ns+0x286/0x5f0 net/core/net_namespace.c:570
 #1: 
ffffffff8a3d47a8
 (
rtnl_mutex){+.+.}-{4:4}
, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
, at: register_netdevice_notifier_net+0x23/0xb0 net/core/dev.c:2083
2 locks held by syz-executor/12656:
 #0: 
ffffffff8a3be810
 (pernet_ops_rwsem
){++++}-{4:4}
, at: copy_net_ns+0x286/0x5f0 net/core/net_namespace.c:570
 #1: 
ffffffff8a3d47a8
 (
rtnl_mutex
){+.+.}-{4:4}
, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
, at: register_netdevice_notifier_net+0x23/0xb0 net/core/dev.c:2083
2 locks held by syz-executor/12658:
 #0: ffffffff8a3be810
 (
pernet_ops_rwsem){++++}-{4:4}
, at: copy_net_ns+0x286/0x5f0 net/core/net_namespace.c:570
 #1: 
ffffffff8a3d47a8
 (
rtnl_mutex
){+.+.}-{4:4}
, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
, at: register_netdevice_notifier_net+0x23/0xb0 net/core/dev.c:2083
2 locks held by syz-executor/12677:
 #0: ffffffff8a3be810
 (pernet_ops_rwsem
){++++}-{4:4}
, at: copy_net_ns+0x286/0x5f0 net/core/net_namespace.c:570
 #1: ffffffff8a3d47a8
 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
 (rtnl_mutex){+.+.}-{4:4}, at: register_netdevice_notifier_net+0x23/0xb0 net/core/dev.c:2083
2 locks held by syz-executor/12679:
 #0: 
ffffffff8a3be810
 (pernet_ops_rwsem
){++++}-{4:4}
, at: copy_net_ns+0x286/0x5f0 net/core/net_namespace.c:570
 #1: ffffffff8a3d47a8
 (
rtnl_mutex
){+.+.}-{4:4}
, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
, at: register_netdevice_notifier_net+0x23/0xb0 net/core/dev.c:2083
2 locks held by syz-executor/12682:
 #0: 
ffffffff8a3be810 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x286/0x5f0 net/core/net_namespace.c:570
 #1: ffffffff8a3d47a8
 (rtnl_mutex
){+.+.}-{4:4}
, at: rtnl_net_lock include/linux/rtnetlink.h:130 [inline]
, at: register_netdevice_notifier_net+0x23/0xb0 net/core/dev.c:2083

=============================================

NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.16.0-rc1-syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:307 [inline]
 watchdog+0xf70/0x12c0 kernel/hung_task.c:470
 kthread+0x3c5/0x780 kernel/kthread.c:464
 ret_from_fork+0x5b3/0x6c0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
raw-gadget.2 gadget.6: ignoring, device is not running
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 2832 Comm: klogd Not tainted 6.16.0-rc1-syzkaller #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:get_current arch/x86/include/asm/current.h:25 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:216
Code: e9 fd 12 55 00 be 03 00 00 00 5b e9 72 e9 08 01 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 34 24 <65> 48 8b 15 d8 e2 ed 0a 65 8b 05 e9 e2 ed 0a a9 00 01 ff 00 74 1d
RSP: 0018:ffffc90000007168 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff872ba50a
RDX: ffff888116b11d00 RSI: ffffffff872ba538 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 00000000003a9c38 R12: 0000000000000000
R13: 0000000000000004 R14: 0000000000000004 R15: ffffc90000007320
FS:  00007fa36b832c80(0000) GS:ffff888269165000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000561419b49be0 CR3: 0000000116a52000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 convert_num_spec.isra.0+0x78/0x90 lib/vsprintf.c:2759
 vsnprintf+0xdc5/0x1160 lib/vsprintf.c:2835
 snprintf+0xc7/0x100 lib/vsprintf.c:2968
 print_caller kernel/printk/printk.c:1390 [inline]
 info_print_prefix+0x134/0x350 kernel/printk/printk.c:1409
 record_print_text+0x140/0x400 kernel/printk/printk.c:1456
 printk_get_next_message+0x2d1/0x6d0 kernel/printk/printk.c:3024
 console_emit_next_record kernel/printk/printk.c:3092 [inline]
 console_flush_all+0x6ea/0xc60 kernel/printk/printk.c:3226
 __console_flush_and_unlock kernel/printk/printk.c:3285 [inline]
 console_unlock+0xd8/0x210 kernel/printk/printk.c:3325
 vprintk_emit+0x418/0x6d0 kernel/printk/printk.c:2450
 dev_vprintk_emit drivers/base/core.c:4917 [inline]
 dev_printk_emit+0xfa/0x140 drivers/base/core.c:4928
 __dev_printk+0xf5/0x270 drivers/base/core.c:4940
 _dev_err+0xe4/0x120 drivers/base/core.c:4983
 gadget_setup+0x283/0x410 drivers/usb/gadget/legacy/raw_gadget.c:345
 dummy_timer+0x19dd/0x3a20 drivers/usb/gadget/udc/dummy_hcd.c:1927
 __run_hrtimer kernel/time/hrtimer.c:1761 [inline]
 __hrtimer_run_queues+0x202/0xad0 kernel/time/hrtimer.c:1825
 hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1842
 handle_softirqs+0x205/0x8d0 kernel/softirq.c:579
 __do_softirq kernel/softirq.c:613 [inline]
 invoke_softirq kernel/softirq.c:453 [inline]
 __irq_exit_rcu+0xfa/0x160 kernel/softirq.c:680
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:rep_movs_alternative+0x0/0x90 arch/x86/lib/copy_user_64.S:36
Code: 76 40 75 b6 48 8b 1c 24 4c 8b 64 24 08 48 83 c4 10 e9 14 af 03 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <48> 83 f9 40 73 44 83 f9 08 73 25 85 c9 74 0f 8a 06 88 07 48 ff c7
RSP: 0018:ffffc9000140fbf0 EFLAGS: 00040246
RAX: 0000000000000001 RBX: 0000000000000074 RCX: 0000000000000074
RDX: ffffed1026ad980f RSI: ffff8881356cc000 RDI: 00007fa36bb9c640
RBP: 00007fa36bb9c640 R08: 0000000000000000 R09: ffffed1026ad980e
R10: ffff8881356cc073 R11: 0000000000000001 R12: ffff8881356cc000
R13: 00007fa36bb9c6b4 R14: 00007ffffffff000 R15: 0000000000000000
 copy_user_generic arch/x86/include/asm/uaccess_64.h:126 [inline]
 raw_copy_to_user arch/x86/include/asm/uaccess_64.h:147 [inline]
 _inline_copy_to_user include/linux/uaccess.h:197 [inline]
 _copy_to_user+0xbb/0xd0 lib/usercopy.c:26
 copy_to_user include/linux/uaccess.h:225 [inline]
 syslog_print+0x35e/0x620 kernel/printk/printk.c:1684
 do_syslog+0x3dc/0x6c0 kernel/printk/printk.c:1785
 __do_sys_syslog kernel/printk/printk.c:1877 [inline]
 __se_sys_syslog kernel/printk/printk.c:1875 [inline]
 __x64_sys_syslog+0x74/0xb0 kernel/printk/printk.c:1875
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa36b9fca37
Code: 73 01 c3 48 8b 0d c1 f3 0c 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 67 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 91 f3 0c 00 f7 d8 64 89 01 48
RSP: 002b:00007ffd994fa428 EFLAGS: 00000206 ORIG_RAX: 0000000000000067
RAX: ffffffffffffffda RBX: 00007fa36bb9c490 RCX: 00007fa36b9fca37
RDX: 00000000000003ff RSI: 00007fa36bb9c490 RDI: 0000000000000002
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000004000 R11: 0000000000000206 R12: 00007fa36bb9c490
R13: 00007fa36bb79dfe R14: 00007fa36bb9c502 R15: 00007fa36bb9c502
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/06/15 07:21 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 19272b37aa4f 5f4b362d .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-usb INFO: task hung in uevent_store
* Struck through repros no longer work on HEAD.