syzbot


INFO: task hung in ath6kl_usb_destroy (5)

Status: auto-obsoleted due to no activity on 2022/11/06 15:24
Subsystems: wireless
[Documentation on labels]
First crash: 769d, last: 599d
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream INFO: task hung in ath6kl_usb_destroy wireless 1 1453d 1453d 0/26 auto-closed as invalid on 2020/07/05 21:01
upstream INFO: task hung in ath6kl_usb_destroy (4) wireless 12 799d 922d 0/26 closed as invalid on 2022/02/07 19:19
upstream INFO: task hung in ath6kl_usb_destroy (2) wireless 1 1261d 1261d 0/26 closed as invalid on 2020/10/15 17:21
upstream INFO: task hung in ath6kl_usb_destroy (3) wireless 11 1047d 1215d 0/26 auto-closed as invalid on 2021/09/14 07:47

Sample crash report:
INFO: task kworker/0:7:3683 blocked for more than 143 seconds.
      Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:7     state:D stack:21792 pid: 3683 ppid:     2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5178 [inline]
 __schedule+0x957/0xe20 kernel/sched/core.c:6490
 schedule+0xcb/0x190 kernel/sched/core.c:6566
 schedule_timeout+0xac/0x300 kernel/time/timer.c:1911
 do_wait_for_common+0x3ea/0x560 kernel/sched/completion.c:85
 __wait_for_common kernel/sched/completion.c:106 [inline]
 wait_for_common kernel/sched/completion.c:117 [inline]
 wait_for_completion+0x46/0x60 kernel/sched/completion.c:138
 __flush_workqueue+0x76a/0x16a0 kernel/workqueue.c:2861
 ath6kl_usb_destroy+0x36/0x350 drivers/net/wireless/ath/ath6kl/usb.c:614
 ath6kl_usb_probe+0x126c/0x1310 drivers/net/wireless/ath/ath6kl/usb.c:1171
 usb_probe_interface+0x66e/0xb60 drivers/usb/core/driver.c:396
 call_driver_probe+0x96/0x250
 really_probe+0x220/0x940 drivers/base/dd.c:634
 __driver_probe_device+0x1f4/0x3f0 drivers/base/dd.c:764
 driver_probe_device+0x50/0x240 drivers/base/dd.c:794
 __device_attach_driver+0x273/0x3d0 drivers/base/dd.c:917
 bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427
 __device_attach+0x372/0x5a0 drivers/base/dd.c:989
 bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487
 device_add+0xb20/0xf90 drivers/base/core.c:3428
 usb_set_configuration+0x1a5f/0x20e0 drivers/usb/core/message.c:2170
 usb_generic_driver_probe+0x83/0x140 drivers/usb/core/generic.c:238
 usb_probe_device+0x131/0x260 drivers/usb/core/driver.c:293
 call_driver_probe+0x96/0x250
 really_probe+0x220/0x940 drivers/base/dd.c:634
 __driver_probe_device+0x1f4/0x3f0 drivers/base/dd.c:764
 driver_probe_device+0x50/0x240 drivers/base/dd.c:794
 __device_attach_driver+0x273/0x3d0 drivers/base/dd.c:917
 bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427
 __device_attach+0x372/0x5a0 drivers/base/dd.c:989
 bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487
 device_add+0xb20/0xf90 drivers/base/core.c:3428
 usb_new_device+0xbc2/0x18b0 drivers/usb/core/hub.c:2566
 hub_port_connect+0x106b/0x2930 drivers/usb/core/hub.c:5363
 hub_port_connect_change+0x619/0xbe0 drivers/usb/core/hub.c:5507
 port_event+0xeb7/0x1390 drivers/usb/core/hub.c:5663
 hub_event+0x5be/0xd70 drivers/usb/core/hub.c:5745
 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30
 </TASK>
INFO: task kworker/0:8:3684 blocked for more than 143 seconds.
      Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:8     state:D stack:24192 pid: 3684 ppid:     2 flags:0x00004000
Workqueue: events request_firmware_work_func
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5178 [inline]
 __schedule+0x957/0xe20 kernel/sched/core.c:6490
 schedule+0xcb/0x190 kernel/sched/core.c:6566
 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6625
 __mutex_lock_common+0xecf/0x26c0 kernel/locking/mutex.c:679
 __mutex_lock kernel/locking/mutex.c:747 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:799
 device_lock include/linux/device.h:835 [inline]
 ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1135 [inline]
 ath9k_hif_usb_firmware_cb+0x368/0x4d0 drivers/net/wireless/ath/ath9k/hif_usb.c:1268
 request_firmware_work_func+0x198/0x270 drivers/base/firmware_loader/main.c:1107
 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30
 </TASK>
INFO: task kworker/0:10:3911 blocked for more than 144 seconds.
      Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:kworker/0:10    state:D stack:22520 pid: 3911 ppid:     2 flags:0x00004000
Workqueue: usb_hub_wq hub_event
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5178 [inline]
 __schedule+0x957/0xe20 kernel/sched/core.c:6490
 schedule+0xcb/0x190 kernel/sched/core.c:6566
 schedule_timeout+0xac/0x300 kernel/time/timer.c:1911
 do_wait_for_common+0x3ea/0x560 kernel/sched/completion.c:85
 __wait_for_common kernel/sched/completion.c:106 [inline]
 wait_for_common kernel/sched/completion.c:117 [inline]
 wait_for_completion+0x46/0x60 kernel/sched/completion.c:138
 __flush_workqueue+0x76a/0x16a0 kernel/workqueue.c:2861
 hif_detach_htc drivers/net/wireless/ath/ath6kl/usb.c:861 [inline]
 ath6kl_usb_power_off+0x34/0x40 drivers/net/wireless/ath/ath6kl/usb.c:1060
 ath6kl_hif_power_off drivers/net/wireless/ath/ath6kl/hif-ops.h:143 [inline]
 ath6kl_core_init+0xabd/0x1110 drivers/net/wireless/ath/ath6kl/core.c:257
 ath6kl_usb_probe+0x1216/0x1310 drivers/net/wireless/ath/ath6kl/usb.c:1160
 usb_probe_interface+0x66e/0xb60 drivers/usb/core/driver.c:396
 call_driver_probe+0x96/0x250
 really_probe+0x220/0x940 drivers/base/dd.c:634
 __driver_probe_device+0x1f4/0x3f0 drivers/base/dd.c:764
 driver_probe_device+0x50/0x240 drivers/base/dd.c:794
 __device_attach_driver+0x273/0x3d0 drivers/base/dd.c:917
 bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427
 __device_attach+0x372/0x5a0 drivers/base/dd.c:989
 bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487
 device_add+0xb20/0xf90 drivers/base/core.c:3428
 usb_set_configuration+0x1a5f/0x20e0 drivers/usb/core/message.c:2170
 usb_generic_driver_probe+0x83/0x140 drivers/usb/core/generic.c:238
 usb_probe_device+0x131/0x260 drivers/usb/core/driver.c:293
 call_driver_probe+0x96/0x250
 really_probe+0x220/0x940 drivers/base/dd.c:634
 __driver_probe_device+0x1f4/0x3f0 drivers/base/dd.c:764
 driver_probe_device+0x50/0x240 drivers/base/dd.c:794
 __device_attach_driver+0x273/0x3d0 drivers/base/dd.c:917
 bus_for_each_drv+0x18a/0x210 drivers/base/bus.c:427
 __device_attach+0x372/0x5a0 drivers/base/dd.c:989
 bus_probe_device+0xb8/0x1f0 drivers/base/bus.c:487
 device_add+0xb20/0xf90 drivers/base/core.c:3428
 usb_new_device+0xbc2/0x18b0 drivers/usb/core/hub.c:2566
 hub_port_connect+0x106b/0x2930 drivers/usb/core/hub.c:5363
 hub_port_connect_change+0x619/0xbe0 drivers/usb/core/hub.c:5507
 port_event+0xeb7/0x1390 drivers/usb/core/hub.c:5663
 hub_event+0x5be/0xd70 drivers/usb/core/hub.c:5745
 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30
 </TASK>

Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
 #0: ffffffff8cb1f030 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
 #0: ffffffff8cb1f830 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x30/0xd00 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
 #0: ffffffff8cb1ee60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3282:
 #0: ffff8880271d7098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244
 #1: ffffc90002d162e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6e8/0x1e50 drivers/tty/n_tty.c:2124
5 locks held by kworker/0:7/3683:
 #0: ffff888011e2d938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
 #1: ffffc9000483fd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
 #2: ffff88814775d190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
 #2: ffff88814775d190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1bf/0xd70 drivers/usb/core/hub.c:5691
 #3: ffff88803c816190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
 #3: ffff88803c816190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x5a0 drivers/base/dd.c:964
 #4: ffff888081cd1118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
 #4: ffff888081cd1118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x5a0 drivers/base/dd.c:964
3 locks held by kworker/0:8/3684:
 #0: ffff888011c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
 #1: ffffc9000484fd00 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
 #2: ffff8881476ed190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
 #2: ffff8881476ed190 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_fail drivers/net/wireless/ath/ath9k/hif_usb.c:1135 [inline]
 #2: ffff8881476ed190 (&dev->mutex){....}-{3:3}, at: ath9k_hif_usb_firmware_cb+0x368/0x4d0 drivers/net/wireless/ath/ath9k/hif_usb.c:1268
3 locks held by udevd/3765:
 #0: ffff88807a9a6088 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:197 [inline]
 #0: ffff88807a9a6088 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x19b/0x570 fs/kernfs/file.c:236
 #1: ffff88802458b830 (kn->active#86){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:198 [inline]
 #1: ffff88802458b830 (kn->active#86){++++}-{0:0}, at: kernfs_fop_read_iter+0x1b3/0x570 fs/kernfs/file.c:236
 #2: ffff88803fcca190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:840 [inline]
 #2: ffff88803fcca190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x30/0x390 drivers/usb/core/sysfs.c:873
3 locks held by udevd/3877:
 #0: ffff888079075488 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:197 [inline]
 #0: ffff888079075488 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x19b/0x570 fs/kernfs/file.c:236
 #1: ffff88807b305490 (kn->active#86){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:198 [inline]
 #1: ffff88807b305490 (kn->active#86){++++}-{0:0}, at: kernfs_fop_read_iter+0x1b3/0x570 fs/kernfs/file.c:236
 #2: ffff88803c816190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:840 [inline]
 #2: ffff88803c816190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x30/0x390 drivers/usb/core/sysfs.c:873
5 locks held by kworker/0:10/3911:
 #0: ffff888011e2d938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x796/0xd10 kernel/workqueue.c:2262
 #1: ffffc900053cfd00 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7d0/0xd10 kernel/workqueue.c:2264
 #2: ffff8881476ed190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
 #2: ffff8881476ed190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1bf/0xd70 drivers/usb/core/hub.c:5691
 #3: ffff88803fcca190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
 #3: ffff88803fcca190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x5a0 drivers/base/dd.c:964
 #4: ffff88803fcc9118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline]
 #4: ffff88803fcc9118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x8a/0x5a0 drivers/base/dd.c:964
2 locks held by kworker/u4:22/4962:

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

NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 nmi_cpu_backtrace+0x473/0x4a0 lib/nmi_backtrace.c:111
 nmi_trigger_cpumask_backtrace+0x168/0x280 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
 watchdog+0xcd5/0xd20 kernel/hung_task.c:369
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5019 Comm: kworker/u4:23 Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Workqueue: phy4 ieee80211_iface_work
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:228 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x4/0xa0 kernel/kcov.c:283
Code: 48 c7 04 01 06 00 00 00 48 89 d0 48 83 c8 10 48 89 3c 01 48 83 ca 18 48 89 34 11 4e 89 44 c9 20 c3 0f 1f 44 00 00 4c 8b 04 24 <65> 48 8b 14 25 00 6f 02 00 65 8b 0d 64 4b 7a 7e f7 c1 00 01 ff 00
RSP: 0018:ffffc900159b75b8 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000004 RCX: dffffc0000000000
RDX: ffff888085345880 RSI: 0000000000000006 RDI: 0000000000000047
RBP: ffffc900159b7870 R08: ffffffff8998bf12 R09: fffffbfff1c07946
R10: fffffbfff1c07946 R11: 1ffffffff1c07945 R12: 0000000000000006
R13: 0000000000000028 R14: ffff88807750fc89 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000000 CR3: 000000000c88e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 cfg80211_find_elem_match net/wireless/scan.c:1234 [inline]
 cfg80211_find_elem include/net/cfg80211.h:6082 [inline]
 cfg80211_inform_bss_frame_data+0xde2/0x20e0 net/wireless/scan.c:2509
 ieee80211_bss_info_update+0x78a/0xc30 net/mac80211/scan.c:190
 ieee80211_rx_bss_info net/mac80211/ibss.c:1119 [inline]
 ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1610 [inline]
 ieee80211_ibss_rx_queued_mgmt+0x1659/0x28c0 net/mac80211/ibss.c:1639
 ieee80211_iface_process_skb net/mac80211/iface.c:1528 [inline]
 ieee80211_iface_work+0x757/0xcd0 net/mac80211/iface.c:1582
 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
 kthread+0x266/0x300 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30
 </TASK>

Crashes (7):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/08/08 15:16 upstream 200e340f2196 88e3a122 .config console log report info ci-upstream-kasan-gce-smack-root INFO: task hung in ath6kl_usb_destroy
2022/07/04 15:11 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 90557fa89d3e bff65f44 .config console log report info ci2-upstream-usb INFO: task hung in ath6kl_usb_destroy
2022/07/01 16:31 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 90557fa89d3e 1434eec0 .config console log report info ci2-upstream-usb INFO: task hung in ath6kl_usb_destroy
2022/04/26 23:38 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing ef94b2664a25 1fa34c1b .config console log report info ci2-upstream-usb INFO: task hung in ath6kl_usb_destroy
2022/03/27 17:49 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing 46d2c20b0b10 89bc8608 .config console log report info ci2-upstream-usb INFO: task hung in ath6kl_usb_destroy
2022/02/21 18:11 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing a5d847b0afd3 3cd800e4 .config console log report info ci2-upstream-usb INFO: task hung in ath6kl_usb_destroy
2022/02/19 04:37 https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb.git usb-testing a5d847b0afd3 3cd800e4 .config console log report info ci2-upstream-usb INFO: task hung in ath6kl_usb_destroy
* Struck through repros no longer work on HEAD.