INFO: task kworker/0:15:8212 blocked for more than 147 seconds.
Not tainted 5.18.0-syzkaller-13818-gd0e60d46bc03 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:15 state:D stack:24280 pid: 8212 ppid: 2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
context_switch kernel/sched/core.c:5116 [inline]
__schedule+0xa00/0x4b30 kernel/sched/core.c:6428
schedule+0xd2/0x1f0 kernel/sched/core.c:6500
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6559
__mutex_lock_common kernel/locking/mutex.c:679 [inline]
__mutex_lock+0xa70/0x1350 kernel/locking/mutex.c:747
add_early_randomness+0x1a/0x170 drivers/char/hw_random/core.c:69
hwrng_register+0x399/0x510 drivers/char/hw_random/core.c:599
chaoskey_probe+0x7b5/0xc40 drivers/usb/misc/chaoskey.c:205
usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:555 [inline]
really_probe+0x23e/0xb90 drivers/base/dd.c:634
__driver_probe_device+0x338/0x4d0 drivers/base/dd.c:764
driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:794
__device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:917
bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
__device_attach+0x1e4/0x530 drivers/base/dd.c:989
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
device_add+0xbda/0x1ea0 drivers/base/core.c:3417
usb_set_configuration+0x101e/0x1900 drivers/usb/core/message.c:2170
usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238
usb_probe_device+0xd9/0x2c0 drivers/usb/core/driver.c:293
call_driver_probe drivers/base/dd.c:555 [inline]
really_probe+0x23e/0xb90 drivers/base/dd.c:634
__driver_probe_device+0x338/0x4d0 drivers/base/dd.c:764
driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:794
__device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:917
bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
__device_attach+0x1e4/0x530 drivers/base/dd.c:989
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
device_add+0xbda/0x1ea0 drivers/base/core.c:3417
usb_new_device.cold+0x641/0x1091 drivers/usb/core/hub.c:2566
hub_port_connect drivers/usb/core/hub.c:5363 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5507 [inline]
port_event drivers/usb/core/hub.c:5663 [inline]
hub_event+0x25d5/0x4690 drivers/usb/core/hub.c:5745
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
Showing all locks held in the system:
1 lock held by pr/ttyS0/16:
1 lock held by khungtaskd/29:
#0: ffffffff8bd840e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491
1 lock held by hwrng/754:
#0: ffffffff8c82a0a8 (reading_mutex){+.+.}-{3:3}, at: hwrng_fillfn+0x141/0x370 drivers/char/hw_random/core.c:503
2 locks held by getty/3295:
#0: ffff88801eb8a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90001bf92e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xe50/0x13c0 drivers/tty/n_tty.c:2124
1 lock held by syz-executor.0/3643:
2 locks held by kworker/u4:7/3717:
3 locks held by kworker/0:9/4502:
2 locks held by kworker/u4:20/7983:
#0: ffff888011874138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888011874138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888011874138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888011874138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888011874138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888011874138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
#1: ffffc900032e7da8 ((reaper_work).work){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
6 locks held by kworker/0:15/8212:
#0: ffff8881457db938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff8881457db938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff8881457db938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff8881457db938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff8881457db938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff8881457db938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
#1: ffffc90004087da8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
#2: ffff8881476ad190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#2: ffff8881476ad190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4690 drivers/usb/core/hub.c:5691
#3: ffff88806f672190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#3: ffff88806f672190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x530 drivers/base/dd.c:964
#4: ffff888020cb2118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
#4: ffff888020cb2118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x530 drivers/base/dd.c:964
#5: ffffffff8c82a0a8 (reading_mutex){+.+.}-{3:3}, at: add_early_randomness+0x1a/0x170 drivers/char/hw_random/core.c:69
3 locks held by udevd/13747:
#0: ffff88802733a888 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:197 [inline]
#0: ffff88802733a888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x189/0x6e0 fs/kernfs/file.c:236
#1: ffff888071c13048 (kn->active#56){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:198 [inline]
#1: ffff888071c13048 (kn->active#56){++++}-{0:0}, at: kernfs_fop_read_iter+0x1ac/0x6e0 fs/kernfs/file.c:236
#2: ffff88806f672190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:840 [inline]
#2: ffff88806f672190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873
4 locks held by syz-executor.2/16270:
1 lock held by syz-executor.2/16285:
4 locks held by syz-executor.4/16283:
1 lock held by syz-executor.1/16287:
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 5.18.0-syzkaller-13818-gd0e60d46bc03 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1e6/0x230 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xc22/0xf90 kernel/hung_task.c:378
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 16283 Comm: syz-executor.4 Not tainted 5.18.0-syzkaller-13818-gd0e60d46bc03 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:106 [inline]
RIP: 0010:lock_is_held_type+0x51/0x140 kernel/locking/lockdep.c:5704
Code: 8b 76 85 c0 0f 85 ca 00 00 00 65 4c 8b 24 25 80 6f 02 00 41 8b 94 24 5c 0a 00 00 85 d2 0f 85 b1 00 00 00 48 89 fd 41 89 f6 9c <8f> 04 24 fa 48 c7 c7 80 67 cc 89 31 db e8 dd 0d 00 00 41 8b 84 24
RSP: 0018:ffffc900032c78e0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8bd84020
RBP: ffffffff8bd84020 R08: 0000000000000000 R09: ffffffff8dbacf57
R10: fffffbfff1b759ea R11: 0000000000000001 R12: ffff888037ae6180
R13: 00000000ffffffff R14: 00000000ffffffff R15: 0000000020285580
FS: 00007f7fae102700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020285030 CR3: 0000000021e54000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_is_held include/linux/lockdep.h:279 [inline]
rcu_read_lock_sched_held+0x3a/0x70 kernel/rcu/update.c:125
trace_lock_release include/trace/events/lock.h:69 [inline]
lock_release+0x560/0x780 kernel/locking/lockdep.c:5676
__might_fault mm/memory.c:5558 [inline]
__might_fault+0x142/0x170 mm/memory.c:5551
_copy_from_user+0x25/0x170 lib/usercopy.c:13
copy_from_user include/linux/uaccess.h:152 [inline]
__copy_msghdr_from_user+0x91/0x4b0 net/socket.c:2374
copy_msghdr_from_user net/socket.c:2425 [inline]
recvmsg_copy_msghdr net/socket.c:2677 [inline]
___sys_recvmsg+0xd5/0x200 net/socket.c:2749
do_recvmmsg+0x254/0x6d0 net/socket.c:2847
__sys_recvmmsg net/socket.c:2926 [inline]
__do_sys_recvmmsg net/socket.c:2949 [inline]
__se_sys_recvmmsg net/socket.c:2942 [inline]
__x64_sys_recvmmsg+0x20b/0x260 net/socket.c:2942
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: 0033:0x7f7fad089109
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:00007f7fae102168 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f7fad19c030 RCX: 00007f7fad089109
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000004
RBP: 00007f7fad0e308d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe04e868cf R14: 00007f7fae102300 R15: 0000000000022000
----------------
Code disassembly (best guess):
0: 8b 76 85 mov -0x7b(%rsi),%esi
3: c0 0f 85 rorb $0x85,(%rdi)
6: ca 00 00 lret $0x0
9: 00 65 4c add %ah,0x4c(%rbp)
c: 8b 24 25 80 6f 02 00 mov 0x26f80,%esp
13: 41 8b 94 24 5c 0a 00 mov 0xa5c(%r12),%edx
1a: 00
1b: 85 d2 test %edx,%edx
1d: 0f 85 b1 00 00 00 jne 0xd4
23: 48 89 fd mov %rdi,%rbp
26: 41 89 f6 mov %esi,%r14d
29: 9c pushfq
* 2a: 8f 04 24 popq (%rsp) <-- trapping instruction
2d: fa cli
2e: 48 c7 c7 80 67 cc 89 mov $0xffffffff89cc6780,%rdi
35: 31 db xor %ebx,%ebx
37: e8 dd 0d 00 00 callq 0xe19
3c: 41 rex.B
3d: 8b .byte 0x8b
3e: 84 .byte 0x84
3f: 24 .byte 0x24