bisecting fixing commit since ed4643521e6af8ab8ed1e467630a85884d2696cf building syzkaller on 89bc860804252dbacb8c2bea60b9204859f4afd7 testing commit ed4643521e6af8ab8ed1e467630a85884d2696cf compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 38061d4dd9b917e064c3ac75b4b1a4da5dd973fdb873a2ab3f76f45774b6247d run #0: basic kernel testing failed: BUG: program execution failed: executor NUM: EOF run #1: basic kernel testing failed: BUG: program execution failed: executor NUM: EOF run #2: basic kernel testing failed: failed to copy binary to VM: failed to run ["scp" "-P" "22" "-F" "/dev/null" "-o" "UserKnownHostsFile=/dev/null" "-o" "BatchMode=yes" "-o" "IdentitiesOnly=yes" "-o" "StrictHostKeyChecking=no" "-o" "ConnectTimeout=10" "/tmp/syz-executor1135357348" "root@10.128.10.24:./syz-executor1135357348"]: exit status 1 Connection timed out during banner exchange Connection to 10.128.10.24 port 22 timed out lost connection run #3: crashed: INFO: task hung in crda_timeout_work run #4: crashed: INFO: task hung in r871xu_dev_remove run #5: crashed: INFO: task hung in crda_timeout_work run #6: crashed: INFO: task hung in addrconf_dad_work run #7: crashed: INFO: task hung in crda_timeout_work run #8: crashed: INFO: task hung in r871xu_dev_remove run #9: crashed: INFO: task hung in netdev_run_todo run #10: crashed: INFO: task hung in r871xu_dev_remove run #11: crashed: INFO: task hung in r871xu_dev_remove run #12: crashed: INFO: task hung in r871xu_dev_remove run #13: crashed: INFO: task hung in r871xu_dev_remove run #14: crashed: INFO: task hung in r871xu_dev_remove run #15: crashed: INFO: task hung in r871xu_dev_remove run #16: crashed: INFO: task hung in r871xu_dev_remove run #17: crashed: INFO: task hung in r871xu_dev_remove run #18: crashed: INFO: task hung in netdev_run_todo run #19: crashed: INFO: task hung in r871xu_dev_remove testing current HEAD 0840a7914caa14315a3191178a9f72c742477860 testing commit 0840a7914caa14315a3191178a9f72c742477860 compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2 kernel signature: 15efa2860beb8011174b680675e4620078669900ce44d5a33c6a84de9aa03f23 run #0: crashed: INFO: rcu detected stall in corrupted run #1: crashed: INFO: rcu detected stall in corrupted run #2: crashed: INFO: rcu detected stall in corrupted run #3: crashed: INFO: rcu detected stall in corrupted run #4: crashed: INFO: rcu detected stall in corrupted run #5: crashed: INFO: rcu detected stall in corrupted run #6: crashed: INFO: rcu detected stall in corrupted run #7: crashed: INFO: rcu detected stall in corrupted run #8: crashed: INFO: rcu detected stall in corrupted run #9: crashed: INFO: task hung in r871xu_dev_remove revisions tested: 2, total time: 27m24.117312484s (build: 12m55.335589509s, test: 13m50.362975245s) the crash still happens on HEAD commit msg: Merge tag 'char-misc-5.19-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc crash: INFO: task hung in r871xu_dev_remove INFO: task kworker/1:1:26 blocked for more than 143 seconds. Not tainted 5.19.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:1 state:D stack:25152 pid: 26 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x9cd/0x4b20 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_timeout+0x19d/0x250 kernel/time/timer.c:1911 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x378/0x530 kernel/sched/completion.c:106 r871xu_dev_remove+0x65/0x3f0 drivers/staging/rtl8712/usb_intf.c:595 usb_unbind_interface+0x183/0x7e0 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1222 [inline] device_release_driver_internal+0x3bc/0x600 drivers/base/dd.c:1248 bus_remove_device+0x295/0x550 drivers/base/bus.c:529 device_del+0x48d/0xb80 drivers/base/core.c:3604 usb_disable_device+0x29c/0x660 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x20a/0x61d drivers/usb/core/hub.c:2228 hub_port_connect drivers/usb/core/hub.c:5207 [inline] hub_port_connect_change drivers/usb/core/hub.c:5507 [inline] port_event drivers/usb/core/hub.c:5663 [inline] hub_event+0xb46/0x39d0 drivers/usb/core/hub.c:5745 process_one_work+0x865/0x13d0 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x738/0xec0 kernel/workqueue.c:2438 kthread+0x299/0x340 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 INFO: task kworker/1:2:140 blocked for more than 143 seconds. Not tainted 5.19.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:2 state:D stack:24872 pid: 140 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x9cd/0x4b20 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_timeout+0x19d/0x250 kernel/time/timer.c:1911 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x378/0x530 kernel/sched/completion.c:106 r871xu_dev_remove+0x65/0x3f0 drivers/staging/rtl8712/usb_intf.c:595 usb_unbind_interface+0x183/0x7e0 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1222 [inline] device_release_driver_internal+0x3bc/0x600 drivers/base/dd.c:1248 bus_remove_device+0x295/0x550 drivers/base/bus.c:529 device_del+0x48d/0xb80 drivers/base/core.c:3604 usb_disable_device+0x29c/0x660 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x20a/0x61d drivers/usb/core/hub.c:2228 hub_port_connect drivers/usb/core/hub.c:5207 [inline] hub_port_connect_change drivers/usb/core/hub.c:5507 [inline] port_event drivers/usb/core/hub.c:5663 [inline] hub_event+0xb46/0x39d0 drivers/usb/core/hub.c:5745 process_one_work+0x865/0x13d0 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x738/0xec0 kernel/workqueue.c:2438 kthread+0x299/0x340 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 INFO: task kworker/1:3:2935 blocked for more than 143 seconds. Not tainted 5.19.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:3 state:D stack:24016 pid: 2935 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x9cd/0x4b20 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6589 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa70/0x1350 kernel/locking/mutex.c:747 unregister_netdev+0x9/0x20 net/core/dev.c:10897 r871xu_dev_remove+0x222/0x3f0 drivers/staging/rtl8712/usb_intf.c:597 usb_unbind_interface+0x183/0x7e0 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1222 [inline] device_release_driver_internal+0x3bc/0x600 drivers/base/dd.c:1248 bus_remove_device+0x295/0x550 drivers/base/bus.c:529 device_del+0x48d/0xb80 drivers/base/core.c:3604 usb_disable_device+0x29c/0x660 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x20a/0x61d drivers/usb/core/hub.c:2228 hub_port_connect drivers/usb/core/hub.c:5207 [inline] hub_port_connect_change drivers/usb/core/hub.c:5507 [inline] port_event drivers/usb/core/hub.c:5663 [inline] hub_event+0xb46/0x39d0 drivers/usb/core/hub.c:5745 process_one_work+0x865/0x13d0 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x738/0xec0 kernel/workqueue.c:2438 kthread+0x299/0x340 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 INFO: task kworker/0:3:3614 blocked for more than 144 seconds. Not tainted 5.19.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:3 state:D stack:25136 pid: 3614 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x9cd/0x4b20 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_timeout+0x19d/0x250 kernel/time/timer.c:1911 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x378/0x530 kernel/sched/completion.c:106 r871xu_dev_remove+0x65/0x3f0 drivers/staging/rtl8712/usb_intf.c:595 usb_unbind_interface+0x183/0x7e0 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1222 [inline] device_release_driver_internal+0x3bc/0x600 drivers/base/dd.c:1248 bus_remove_device+0x295/0x550 drivers/base/bus.c:529 device_del+0x48d/0xb80 drivers/base/core.c:3604 usb_disable_device+0x29c/0x660 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x20a/0x61d drivers/usb/core/hub.c:2228 hub_port_connect drivers/usb/core/hub.c:5207 [inline] hub_port_connect_change drivers/usb/core/hub.c:5507 [inline] port_event drivers/usb/core/hub.c:5663 [inline] hub_event+0xb46/0x39d0 drivers/usb/core/hub.c:5745 process_one_work+0x865/0x13d0 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x738/0xec0 kernel/workqueue.c:2438 kthread+0x299/0x340 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 INFO: task kworker/0:5:3616 blocked for more than 144 seconds. Not tainted 5.19.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:5 state:D stack:25136 pid: 3616 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x9cd/0x4b20 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_timeout+0x19d/0x250 kernel/time/timer.c:1911 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x378/0x530 kernel/sched/completion.c:106 r871xu_dev_remove+0x65/0x3f0 drivers/staging/rtl8712/usb_intf.c:595 usb_unbind_interface+0x183/0x7e0 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1222 [inline] device_release_driver_internal+0x3bc/0x600 drivers/base/dd.c:1248 bus_remove_device+0x295/0x550 drivers/base/bus.c:529 device_del+0x48d/0xb80 drivers/base/core.c:3604 usb_disable_device+0x29c/0x660 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x20a/0x61d drivers/usb/core/hub.c:2228 hub_port_connect drivers/usb/core/hub.c:5207 [inline] hub_port_connect_change drivers/usb/core/hub.c:5507 [inline] port_event drivers/usb/core/hub.c:5663 [inline] hub_event+0xb46/0x39d0 drivers/usb/core/hub.c:5745 process_one_work+0x865/0x13d0 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x738/0xec0 kernel/workqueue.c:2438 kthread+0x299/0x340 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 INFO: task kworker/1:5:4081 blocked for more than 144 seconds. Not tainted 5.19.0-rc3-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/1:5 state:D stack:22224 pid: 4081 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5146 [inline] __schedule+0x9cd/0x4b20 kernel/sched/core.c:6458 schedule+0xd2/0x1f0 kernel/sched/core.c:6530 schedule_timeout+0x19d/0x250 kernel/time/timer.c:1911 do_wait_for_common kernel/sched/completion.c:85 [inline] __wait_for_common+0x378/0x530 kernel/sched/completion.c:106 r871xu_dev_remove+0x65/0x3f0 drivers/staging/rtl8712/usb_intf.c:595 usb_unbind_interface+0x183/0x7e0 drivers/usb/core/driver.c:458 __device_release_driver drivers/base/dd.c:1222 [inline] device_release_driver_internal+0x3bc/0x600 drivers/base/dd.c:1248 bus_remove_device+0x295/0x550 drivers/base/bus.c:529 device_del+0x48d/0xb80 drivers/base/core.c:3604 usb_disable_device+0x29c/0x660 drivers/usb/core/message.c:1419 usb_disconnect.cold+0x20a/0x61d drivers/usb/core/hub.c:2228 hub_port_connect drivers/usb/core/hub.c:5207 [inline] hub_port_connect_change drivers/usb/core/hub.c:5507 [inline] port_event drivers/usb/core/hub.c:5663 [inline] hub_event+0xb46/0x39d0 drivers/usb/core/hub.c:5745 process_one_work+0x865/0x13d0 kernel/workqueue.c:2289 process_scheduled_works kernel/workqueue.c:2352 [inline] worker_thread+0x738/0xec0 kernel/workqueue.c:2438 kthread+0x299/0x340 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 Showing all locks held in the system: 3 locks held by kworker/0:0/6: #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x13d0 kernel/workqueue.c:2260 #1: ffffc900000b7db8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7b7/0x13d0 kernel/workqueue.c:2264 #2: ffffffff8c6a91a8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xb/0x30 net/core/dev.c:10171 3 locks held by kworker/0:1/14: #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x13d0 kernel/workqueue.c:2260 #1: ffffc90000137db8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7b7/0x13d0 kernel/workqueue.c:2264 #2: ffffffff8c6a91a8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xb/0x30 net/core/dev.c:10171 3 locks held by kworker/1:0/22: #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x13d0 kernel/workqueue.c:2260 #1: ffffc900001c7db8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7b7/0x13d0 kernel/workqueue.c:2264 #2: ffffffff8c6a91a8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xb/0x30 net/core/dev.c:10171 5 locks held by kworker/1:1/26: #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x78a/0x13d0 kernel/workqueue.c:2260 #1: ffffc90000a1fdb8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7b7/0x13d0 kernel/workqueue.c:2264 #2: ffff88801ef86190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #2: ffff88801ef86190 (&dev->mutex){....}-{3:3}, at: hub_event+0x127/0x39d0 drivers/usb/core/hub.c:5691 #3: ffff88807f84f190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #3: ffff88807f84f190 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x61d drivers/usb/core/hub.c:2219 #4: ffff888021205118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #4: ffff888021205118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1054 [inline] #4: ffff888021205118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x88/0x600 drivers/base/dd.c:1245 1 lock held by khungtaskd/28: #0: ffffffff8af7c660 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6491 5 locks held by kworker/1:2/140: #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x78a/0x13d0 kernel/workqueue.c:2260 #1: ffffc9000259fdb8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7b7/0x13d0 kernel/workqueue.c:2264 #2: ffff88801ef9e190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #2: ffff88801ef9e190 (&dev->mutex){....}-{3:3}, at: hub_event+0x127/0x39d0 drivers/usb/core/hub.c:5691 #3: ffff88807f84e190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #3: ffff88807f84e190 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x61d drivers/usb/core/hub.c:2219 #4: ffff888021207118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #4: ffff888021207118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1054 [inline] #4: ffff888021207118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x88/0x600 drivers/base/dd.c:1245 3 locks held by kworker/0:2/917: #0: ffff888023e5f938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888023e5f938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888023e5f938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888023e5f938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888023e5f938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888023e5f938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x78a/0x13d0 kernel/workqueue.c:2260 #1: ffffc90004987db8 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b7/0x13d0 kernel/workqueue.c:2264 #2: ffffffff8c6a91a8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x9/0x20 net/ipv6/addrconf.c:4620 6 locks held by kworker/1:3/2935: #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x78a/0x13d0 kernel/workqueue.c:2260 #1: ffffc9000b4afdb8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7b7/0x13d0 kernel/workqueue.c:2264 #2: ffff88814791e190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #2: ffff88814791e190 (&dev->mutex){....}-{3:3}, at: hub_event+0x127/0x39d0 drivers/usb/core/hub.c:5691 #3: ffff88801b77c190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #3: ffff88801b77c190 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x61d drivers/usb/core/hub.c:2219 #4: ffff888079652118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #4: ffff888079652118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1054 [inline] #4: ffff888079652118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x88/0x600 drivers/base/dd.c:1245 #5: ffffffff8c6a91a8 (rtnl_mutex){+.+.}-{3:3}, at: unregister_netdev+0x9/0x20 net/core/dev.c:10897 2 locks held by dhcpcd/3183: #0: ffffffff8c6a91a8 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x175/0x16c0 net/ipv4/devinet.c:1070 #1: ffff88806785cdf0 (&padapter->mutex_start){+.+.}-{3:3}, at: netdev_open+0x30/0x5e0 drivers/staging/rtl8712/os_intfs.c:374 2 locks held by getty/3282: #0: ffff8880245be098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x1f/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc900029162e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xb14/0x1040 drivers/tty/n_tty.c:2124 5 locks held by kworker/0:3/3614: #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x78a/0x13d0 kernel/workqueue.c:2260 #1: ffffc90002ddfdb8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7b7/0x13d0 kernel/workqueue.c:2264 #2: ffff88814796e190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #2: ffff88814796e190 (&dev->mutex){....}-{3:3}, at: hub_event+0x127/0x39d0 drivers/usb/core/hub.c:5691 #3: ffff88801edf5190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #3: ffff88801edf5190 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x61d drivers/usb/core/hub.c:2219 #4: ffff88801edf6118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #4: ffff88801edf6118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1054 [inline] #4: ffff88801edf6118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x88/0x600 drivers/base/dd.c:1245 3 locks held by kworker/0:4/3615: #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x13d0 kernel/workqueue.c:2260 #1: ffffc90002defdb8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7b7/0x13d0 kernel/workqueue.c:2264 #2: ffffffff8c6a91a8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xb/0x30 net/core/dev.c:10171 5 locks held by kworker/0:5/3616: #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x78a/0x13d0 kernel/workqueue.c:2260 #1: ffffc90002e0fdb8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7b7/0x13d0 kernel/workqueue.c:2264 #2: ffff888147986190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #2: ffff888147986190 (&dev->mutex){....}-{3:3}, at: hub_event+0x127/0x39d0 drivers/usb/core/hub.c:5691 #3: ffff88801edf4190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #3: ffff88801edf4190 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x61d drivers/usb/core/hub.c:2219 #4: ffff88807e2dc118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #4: ffff88807e2dc118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1054 [inline] #4: ffff88807e2dc118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x88/0x600 drivers/base/dd.c:1245 3 locks held by kworker/1:4/3617: #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x13d0 kernel/workqueue.c:2260 #1: ffffc90002e1fdb8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7b7/0x13d0 kernel/workqueue.c:2264 #2: ffffffff8c6a91a8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xb/0x30 net/core/dev.c:10171 3 locks held by udevd/4029: #0: ffff88801b2a4c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:197 [inline] #0: ffff88801b2a4c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x15f/0x640 fs/kernfs/file.c:236 #1: ffff88801ba352c0 (kn->active#53){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:198 [inline] #1: ffff88801ba352c0 (kn->active#53){++++}-{0:0}, at: kernfs_fop_read_iter+0x182/0x640 fs/kernfs/file.c:236 #2: ffff88801edf4190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:840 [inline] #2: ffff88801edf4190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x36/0x310 drivers/usb/core/sysfs.c:873 3 locks held by udevd/4036: #0: ffff88807f360c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:197 [inline] #0: ffff88807f360c88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x15f/0x640 fs/kernfs/file.c:236 #1: ffff88806c945918 (kn->active#53){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:198 [inline] #1: ffff88806c945918 (kn->active#53){++++}-{0:0}, at: kernfs_fop_read_iter+0x182/0x640 fs/kernfs/file.c:236 #2: ffff888070447190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:840 [inline] #2: ffff888070447190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x36/0x310 drivers/usb/core/sysfs.c:873 5 locks held by kworker/1:5/4081: #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888140a87138 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x78a/0x13d0 kernel/workqueue.c:2260 #1: ffffc90002d3fdb8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7b7/0x13d0 kernel/workqueue.c:2264 #2: ffff888147956190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #2: ffff888147956190 (&dev->mutex){....}-{3:3}, at: hub_event+0x127/0x39d0 drivers/usb/core/hub.c:5691 #3: ffff888070447190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #3: ffff888070447190 (&dev->mutex){....}-{3:3}, at: usb_disconnect.cold+0x43/0x61d drivers/usb/core/hub.c:2219 #4: ffff88806f1dc118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:835 [inline] #4: ffff88806f1dc118 (&dev->mutex){....}-{3:3}, at: __device_driver_lock drivers/base/dd.c:1054 [inline] #4: ffff88806f1dc118 (&dev->mutex){....}-{3:3}, at: device_release_driver_internal+0x88/0x600 drivers/base/dd.c:1245 3 locks held by kworker/1:6/4102: #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x13d0 kernel/workqueue.c:2260 #1: ffffc90002f8fdb8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7b7/0x13d0 kernel/workqueue.c:2264 #2: ffffffff8c6a91a8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xb/0x30 net/core/dev.c:10171 3 locks held by kworker/1:7/4103: #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x13d0 kernel/workqueue.c:2260 #1: ffffc90002c3fdb8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7b7/0x13d0 kernel/workqueue.c:2264 #2: ffffffff8c6a91a8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xb/0x30 net/core/dev.c:10171 3 locks held by udevd/4157: #0: ffff88802332c888 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:197 [inline] #0: ffff88802332c888 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x15f/0x640 fs/kernfs/file.c:236 #1: ffff88801db4b490 (kn->active#53){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:198 [inline] #1: ffff88801db4b490 (kn->active#53){++++}-{0:0}, at: kernfs_fop_read_iter+0x182/0x640 fs/kernfs/file.c:236 #2: ffff88801b77c190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:840 [inline] #2: ffff88801b77c190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x36/0x310 drivers/usb/core/sysfs.c:873 3 locks held by kworker/1:8/4159: #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x13d0 kernel/workqueue.c:2260 #1: ffffc9000306fdb8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7b7/0x13d0 kernel/workqueue.c:2264 #2: ffffffff8c6a91a8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xb/0x30 net/core/dev.c:10171 3 locks held by kworker/1:9/4160: #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x13d0 kernel/workqueue.c:2260 #1: ffffc9000301fdb8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7b7/0x13d0 kernel/workqueue.c:2264 #2: ffffffff8c6a91a8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xb/0x30 net/core/dev.c:10171 3 locks held by kworker/0:8/4176: #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010064d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x78a/0x13d0 kernel/workqueue.c:2260 #1: ffffc900031c7db8 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x7b7/0x13d0 kernel/workqueue.c:2264 #2: ffffffff8c6a91a8 (rtnl_mutex){+.+.}-{3:3}, at: register_netdev+0xb/0x30 net/core/dev.c:10171 3 locks held by udevd/4681: #0: ffff88806c2ddc88 (&of->mutex){+.+.}-{3:3}, at: kernfs_file_read_iter fs/kernfs/file.c:197 [inline] #0: ffff88806c2ddc88 (&of->mutex){+.+.}-{3:3}, at: kernfs_fop_read_iter+0x15f/0x640 fs/kernfs/file.c:236 #1: ffff88807dcac660 (kn->active#53){++++}-{0:0}, at: kernfs_file_read_iter fs/kernfs/file.c:198 [inline] #1: ffff88807dcac660 (kn->active#53){++++}-{0:0}, at: kernfs_fop_read_iter+0x182/0x640 fs/kernfs/file.c:236 #2: ffff88807f84e190 (&dev->mutex){....}-{3:3}, at: device_lock_interruptible include/linux/device.h:840 [inline] #2: ffff88807f84e190 (&dev->mutex){....}-{3:3}, at: read_descriptors+0x36/0x310 drivers/usb/core/sysfs.c:873 3 locks held by kworker/1:10/4735: #0: ffff888010065d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888010065d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888010065d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888010065d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888010065d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888010065d38 ((wq_completion)events_power_efficient){+.+.}-{0:0}, at: process_one_work+0x78a/0x13d0 kernel/workqueue.c:2260 #1: ffffc900046c7db8 ((reg_check_chans).work){+.+.}-{0:0}, at: process_one_work+0x7b7/0x13d0 kernel/workqueue.c:2264 #2: ffffffff8c6a91a8 (rtnl_mutex){+.+.}-{3:3}, at: reg_check_chans_work+0x74/0xad0 net/wireless/reg.c:2461 3 locks held by kworker/1:12/4737: #0: ffff888023e5f938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888023e5f938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888023e5f938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888023e5f938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888023e5f938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888023e5f938 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work+0x78a/0x13d0 kernel/workqueue.c:2260 #1: ffffc900046ffdb8 ((work_completion)(&(&net->ipv6.addr_chk_work)->work)){+.+.}-{0:0}, at: process_one_work+0x7b7/0x13d0 kernel/workqueue.c:2264 #2: ffffffff8c6a91a8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_verify_work+0x9/0x20 net/ipv6/addrconf.c:4620 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 28 Comm: khungtaskd Not tainted 5.19.0-rc3-syzkaller #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+0x57/0x7d lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x30/0xc0 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x140/0x170 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+0x88c/0xbf0 kernel/hung_task.c:369 kthread+0x299/0x340 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: 11 Comm: kworker/u4:1 Not tainted 5.19.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: phy8 ieee80211_iface_work RIP: 0010:__kasan_check_read+0x0/0x10 mm/kasan/shadow.c:31 Code: 39 c7 73 0b 0f 0b 48 83 c4 60 5b 5d 41 5c c3 48 05 00 80 00 00 48 89 fb 48 39 c7 0f 82 3b db a6 06 eb e1 cc cc cc cc cc cc cc <48> 8b 0c 24 89 f6 31 d2 e9 b3 fa ff ff 0f 1f 00 48 8b 0c 24 89 f6 RSP: 0018:ffffc900001076b0 EFLAGS: 00000002 RAX: 000000000000000d RBX: 1ffff92000020ede RCX: 0000000000000006 RDX: 0000000000000341 RSI: 0000000000000008 RDI: ffffffff8f15b968 RBP: 0000000000000040 R08: 0000000000000000 R09: ffffffff8f15b96f R10: 0000000000000001 R11: 0000000000000001 R12: ffff88801034c530 R13: 0000000000000006 R14: 0000000000000341 R15: ffff88801034c550 FS: 0000000000000000(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcf5038b110 CR3: 000000001db6b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: instrument_atomic_read include/linux/instrumented.h:71 [inline] test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] hlock_class kernel/locking/lockdep.c:227 [inline] mark_lock.part.0+0xee/0x19a0 kernel/locking/lockdep.c:4610 mark_lock kernel/locking/lockdep.c:4596 [inline] mark_usage kernel/locking/lockdep.c:4545 [inline] __lock_acquire+0x8ba/0x55d0 kernel/locking/lockdep.c:5007 lock_acquire kernel/locking/lockdep.c:5665 [inline] lock_acquire+0x1ab/0x570 kernel/locking/lockdep.c:5630 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x12f/0x1350 kernel/locking/mutex.c:747 sdata_lock net/mac80211/ieee80211_i.h:1040 [inline] ieee80211_ibss_work+0x8a/0xcd0 net/mac80211/ibss.c:1681 process_one_work+0x865/0x13d0 kernel/workqueue.c:2289 worker_thread+0x598/0xec0 kernel/workqueue.c:2436 kthread+0x299/0x340 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:302 ---------------- Code disassembly (best guess): 0: 39 c7 cmp %eax,%edi 2: 73 0b jae 0xf 4: 0f 0b ud2 6: 48 83 c4 60 add $0x60,%rsp a: 5b pop %rbx b: 5d pop %rbp c: 41 5c pop %r12 e: c3 retq f: 48 05 00 80 00 00 add $0x8000,%rax 15: 48 89 fb mov %rdi,%rbx 18: 48 39 c7 cmp %rax,%rdi 1b: 0f 82 3b db a6 06 jb 0x6a6db5c 21: eb e1 jmp 0x4 23: cc int3 24: cc int3 25: cc int3 26: cc int3 27: cc int3 28: cc int3 29: cc int3 * 2a: 48 8b 0c 24 mov (%rsp),%rcx <-- trapping instruction 2e: 89 f6 mov %esi,%esi 30: 31 d2 xor %edx,%edx 32: e9 b3 fa ff ff jmpq 0xfffffaea 37: 0f 1f 00 nopl (%rax) 3a: 48 8b 0c 24 mov (%rsp),%rcx 3e: 89 f6 mov %esi,%esi