syzbot

INFO: task kworker/1:5:3679 blocked for more than 143 seconds.
      Not tainted 5.18.0-syzkaller-10139-g8291eaafed36 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/1:5     state:D stack:24752 pid: 3679 ppid:     2 flags:0x00004000
Workqueue: events request_firmware_work_func
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5116 [inline]
 __schedule+0xa00/0x4b30 kernel/sched/core.c:6431
 schedule+0xd2/0x1f0 kernel/sched/core.c:6503
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6562
 __mutex_lock_common kernel/locking/mutex.c:679 [inline]
 __mutex_lock+0xa70/0x1350 kernel/locking/mutex.c:747
 device_lock include/linux/device.h:767 [inline]
 ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1135 [inline]
 ath9k_hif_usb_firmware_cb+0x3ac/0x530 drivers/net/wireless/ath/ath9k/hif_usb.c:1268
 request_firmware_work_func+0x12c/0x230 drivers/base/firmware_loader/main.c:1039
 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
 </TASK>

Showing all locks held in the system:
1 lock held by khungtaskd/29:
 #0: ffffffff8bd868a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491
2 locks held by getty/3290:
 #0: ffff8880249a5098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
 #1: ffffc90002cd62e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcea/0x1230 drivers/tty/n_tty.c:2075
6 locks held by kworker/1:4/3678:
 #0: ffff8881458cd138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8881458cd138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8881458cd138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8881458cd138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8881458cd138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8881458cd138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
 #1: ffffc900044ffda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
 #2: ffff888148d2c220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline]
 #2: ffff888148d2c220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4680 drivers/usb/core/hub.c:5693
 #3: ffff888148d2f580 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3095 [inline]
 #3: ffff888148d2f580 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5259 [inline]
 #3: ffff888148d2f580 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5507 [inline]
 #3: ffff888148d2f580 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5665 [inline]
 #3: ffff888148d2f580 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x1ff2/0x4680 drivers/usb/core/hub.c:5747
 #4: ffff888148bb1d68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5260 [inline]
 #4: ffff888148bb1d68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5507 [inline]
 #4: ffff888148bb1d68 (hcd->address0_mutex){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5665 [inline]
 #4: ffff888148bb1d68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x201b/0x4680 drivers/usb/core/hub.c:5747
 #5: 
ffff8880b9d3a018
 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:544
3 locks held by kworker/1:5/3679:
 #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
 #1: ffffc9000450fda8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
 #2: ffff888148dbc220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline]
 #2: ffff888148dbc220 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1135 [inline]
 #2: ffff888148dbc220 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_cb+0x3ac/0x530 drivers/net/wireless/ath/ath9k/hif_usb.c:1268
6 locks held by kworker/1:7/5146:
 #0: ffff8881458cd138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff8881458cd138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff8881458cd138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff8881458cd138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff8881458cd138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff8881458cd138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
 #1: ffffc9000795fda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
 #2: ffff888148dbc220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline]
 #2: ffff888148dbc220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4680 drivers/usb/core/hub.c:5693
 #3: ffff88806fdc3220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline]
 #3: ffff88806fdc3220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:945
 #4: ffff8880476b91a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:767 [inline]
 #4: ffff8880476b91a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:945
 #5: ffffffff8bc472d0 (umhelper_sem){++++}-{3:3}, at: usermodehelper_read_trylock+0xba/0x2e0 kernel/umh.c:217
3 locks held by udevd/9489:
 #0: ffff888067d24c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:198 [inline]
 #0: ffff888067d24c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x189/0x6f0 fs/kernfs/file.c:237
 #1: ffff88807a7fdda0 (kn->active#86){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:199 [inline]
 #1: ffff88807a7fdda0 (kn->active#86){++++}-{0:0}, at: kernfs_fop_read_iter+0x1ac/0x6f0 fs/kernfs/file.c:237
 #2: ffff88806fdc3220 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:772 [inline]
 #2: ffff88806fdc3220 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x3c/0x2c0 drivers/usb/core/sysfs.c:873
2 locks held by kworker/0:9/13594:
 #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
 #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
 #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
 #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
 #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
 #0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
 #1: ffffc90005ec7da8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
2 locks held by kworker/u4:8/17085:

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

NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 5.18.0-syzkaller-10139-g8291eaafed36 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <TASK>
 __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
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3640 Comm: syz-executor.0 Not tainted 5.18.0-syzkaller-10139-g8291eaafed36 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:hash_64_generic include/linux/hash.h:78 [inline]
RIP: 0010:lookup_chain_cache kernel/locking/lockdep.c:3719 [inline]
RIP: 0010:lookup_chain_cache_add kernel/locking/lockdep.c:3742 [inline]
RIP: 0010:validate_chain kernel/locking/lockdep.c:3797 [inline]
RIP: 0010:__lock_acquire+0x1646/0x5660 kernel/locking/lockdep.c:5053
Code: 20 66 81 e3 ff 1f 0f b7 db be 08 00 00 00 48 89 d8 48 c1 f8 06 48 8d 3c c5 80 e8 0a 90 e8 32 2c 69 00 48 0f a3 1d 7a e5 ac 0e <48> bd eb 83 b5 80 46 86 c8 61 0f 92 c0 49 0f af ef 48 c1 ed 30 84
RSP: 0018:ffffc9000311f880 EFLAGS: 00000047
RAX: 0000000000000001 RBX: 000000000000002c RCX: ffffffff815e02fe
RDX: fffffbfff2015d11 RSI: 0000000000000008 RDI: ffffffff900ae880
RBP: ffff88807e022802 R08: 0000000000000000 R09: ffffffff900ae887
R10: fffffbfff2015d10 R11: 0000000000000001 R12: ffff88807e0227e0
R13: ffff88807e021d80 R14: 0000000000000001 R15: d571924241b8be1b
FS:  0000555555e5c400(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3ae9b691b8 CR3: 0000000048bf0000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire kernel/locking/lockdep.c:5665 [inline]
 lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630
 finish_lock_switch kernel/sched/core.c:4874 [inline]
 finish_task_switch.isra.0+0x195/0xb80 kernel/sched/core.c:4994
 context_switch kernel/sched/core.c:5119 [inline]
 __schedule+0xa08/0x4b30 kernel/sched/core.c:6431
 schedule+0xd2/0x1f0 kernel/sched/core.c:6503
 freezable_schedule include/linux/freezer.h:172 [inline]
 do_nanosleep+0x24e/0x690 kernel/time/hrtimer.c:2044
 hrtimer_nanosleep+0x1f9/0x4a0 kernel/time/hrtimer.c:2097
 common_nsleep+0xa2/0xc0 kernel/time/posix-timers.c:1227
 __do_sys_clock_nanosleep kernel/time/posix-timers.c:1267 [inline]
 __se_sys_clock_nanosleep kernel/time/posix-timers.c:1245 [inline]
 __x64_sys_clock_nanosleep+0x2f4/0x430 kernel/time/posix-timers.c:1245
 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: 0033:0x7fa5e4aade31
Code: 24 0c 89 3c 24 48 89 4c 24 18 e8 aa e7 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 8b 74 24 0c 8b 3c 24 b8 e6 00 00 00 0f 05 <44> 89 c7 48 89 04 24 e8 e3 e7 ff ff 48 8b 04 24 eb 97 66 2e 0f 1f
RSP: 002b:00007fa5e50cfd10 EFLAGS: 00000293 ORIG_RAX: 00000000000000e6
RAX: ffffffffffffffda RBX: 00000000000005b4 RCX: 00007fa5e4aade31
RDX: 00007fa5e50cfd50 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007fa5e50cfddc R08: 0000000000000000 R09: 00007ffc323a1080
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000032
R13: 00000000000dda17 R14: 0000000000000000 R15: 00007fa5e50cfe40
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	66 81 e3 ff 1f       	and    $0x1fff,%bx
   5:	0f b7 db             	movzwl %bx,%ebx
   8:	be 08 00 00 00       	mov    $0x8,%esi
   d:	48 89 d8             	mov    %rbx,%rax
  10:	48 c1 f8 06          	sar    $0x6,%rax
  14:	48 8d 3c c5 80 e8 0a 	lea    -0x6ff51780(,%rax,8),%rdi
  1b:	90
  1c:	e8 32 2c 69 00       	callq  0x692c53
  21:	48 0f a3 1d 7a e5 ac 	bt     %rbx,0xeace57a(%rip)        # 0xeace5a3
  28:	0e
* 29:	48 bd eb 83 b5 80 46 	movabs $0x61c8864680b583eb,%rbp <-- trapping instruction
  30:	86 c8 61
  33:	0f 92 c0             	setb   %al
  36:	49 0f af ef          	imul   %r15,%rbp
  3a:	48 c1 ed 30          	shr    $0x30,%rbp
  3e:	84                   	.byte 0x84