zd1211rw 4-1:0.176: error ioread32(CR_REG1): -11 ============================================ WARNING: possible recursive locking detected 5.14.0-rc7-syzkaller #0 Not tainted -------------------------------------------- kworker/1:5/7442 is trying to acquire lock: ffff888101bf5e70 (&chip->mutex){+.+.}-{3:3}, at: zd_chip_disable_rxtx+0x1c/0x40 drivers/net/wireless/zydas/zd1211rw/zd_chip.c:1465 but task is already holding lock: ffff8881107f5e70 (&chip->mutex){+.+.}-{3:3}, at: pre_reset+0x217/0x290 drivers/net/wireless/zydas/zd1211rw/zd_usb.c:1504 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&chip->mutex); lock(&chip->mutex); *** DEADLOCK *** May be due to missing lock nesting notation 6 locks held by kworker/1:5/7442: #0: ffff88810a1ca538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff88810a1ca538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic64_set include/asm-generic/atomic-instrumented.h:620 [inline] #0: ffff88810a1ca538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/asm-generic/atomic-long.h:41 [inline] #0: ffff88810a1ca538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:617 [inline] #0: ffff88810a1ca538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:644 [inline] #0: ffff88810a1ca538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x871/0x15b0 kernel/workqueue.c:2247 #1: ffffc90005e9fdb0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a5/0x15b0 kernel/workqueue.c:2251 #2: ffff88810f9ed220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #2: ffff88810f9ed220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5662 #3: ffff88810e292220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #3: ffff88810e292220 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:940 #4: ffff88811b3d91a8 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:756 [inline] #4: ffff88811b3d91a8 (&dev->mutex){....}-{3:3}, at: __device_attach+0x7a/0x4a0 drivers/base/dd.c:940 #5: ffff8881107f5e70 (&chip->mutex){+.+.}-{3:3}, at: pre_reset+0x217/0x290 drivers/net/wireless/zydas/zd1211rw/zd_usb.c:1504 stack backtrace: CPU: 1 PID: 7442 Comm: kworker/1:5 Not tainted 5.14.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:105 print_deadlock_bug kernel/locking/lockdep.c:2944 [inline] check_deadlock kernel/locking/lockdep.c:2987 [inline] validate_chain kernel/locking/lockdep.c:3776 [inline] __lock_acquire.cold+0x149/0x3ab kernel/locking/lockdep.c:5015 lock_acquire kernel/locking/lockdep.c:5625 [inline] lock_acquire+0x19d/0x4d0 kernel/locking/lockdep.c:5590 __mutex_lock_common kernel/locking/mutex.c:959 [inline] __mutex_lock+0x125/0x1060 kernel/locking/mutex.c:1104 zd_chip_disable_rxtx+0x1c/0x40 drivers/net/wireless/zydas/zd1211rw/zd_chip.c:1465 zd_op_stop+0x60/0x190 drivers/net/wireless/zydas/zd1211rw/zd_mac.c:343 zd_usb_stop drivers/net/wireless/zydas/zd1211rw/zd_usb.c:1479 [inline] pre_reset+0x19d/0x290 drivers/net/wireless/zydas/zd1211rw/zd_usb.c:1502 usb_reset_device+0x37d/0x9a0 drivers/usb/core/hub.c:6089 probe+0x10f/0x590 drivers/net/wireless/zydas/zd1211rw/zd_usb.c:1371 usb_probe_interface+0x315/0x7f0 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:517 [inline] really_probe+0x23c/0xcd0 drivers/base/dd.c:595 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:747 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:777 __device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:894 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x228/0x4a0 drivers/base/dd.c:965 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xc2f/0x2180 drivers/base/core.c:3355 usb_set_configuration+0x113f/0x1910 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:517 [inline] really_probe+0x23c/0xcd0 drivers/base/dd.c:595 __driver_probe_device+0x338/0x4d0 drivers/base/dd.c:747 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:777 __device_attach_driver+0x20b/0x2f0 drivers/base/dd.c:894 bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427 __device_attach+0x228/0x4a0 drivers/base/dd.c:965 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487 device_add+0xc2f/0x2180 drivers/base/core.c:3355 usb_new_device.cold+0x63f/0x108e drivers/usb/core/hub.c:2563 hub_port_connect drivers/usb/core/hub.c:5348 [inline] hub_port_connect_change drivers/usb/core/hub.c:5488 [inline] port_event drivers/usb/core/hub.c:5634 [inline] hub_event+0x2357/0x4330 drivers/usb/core/hub.c:5716 process_one_work+0x98d/0x15b0 kernel/workqueue.c:2276 process_scheduled_works kernel/workqueue.c:2338 [inline] worker_thread+0x85c/0x11f0 kernel/workqueue.c:2424 kthread+0x3c0/0x4a0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 zd1211rw 4-1:0.44: error ioread32(CR_REG1): -11 usb 4-1: reset high-speed USB device number 96 using dummy_hcd usb 4-1: Using ep0 maxpacket: 32 usb 4-1: device firmware changed zd1211rw 4-1:0.0: couldn't reset usb device. Error number -19 usb 4-1: USB disconnect, device number 96 usb 4-1: new high-speed USB device number 97 using dummy_hcd usb 4-1: Using ep0 maxpacket: 32 usb 4-1: config 0 has an invalid interface number: 176 but max is 2 usb 4-1: config 0 contains an unexpected descriptor of type 0x2, skipping usb 4-1: config 0 has an invalid interface number: 44 but max is 2 usb 4-1: config 0 contains an unexpected descriptor of type 0x2, skipping usb 4-1: config 0 contains an unexpected descriptor of type 0x1, skipping usb 4-1: config 0 has no interface number 1 usb 4-1: config 0 has no interface number 2 usb 4-1: config 0 interface 176 altsetting 128 endpoint 0x8 has invalid maxpacket 1463, setting to 64 usb 4-1: config 0 interface 176 altsetting 128 endpoint 0x7 has invalid maxpacket 512, setting to 64 usb 4-1: config 0 interface 176 altsetting 128 endpoint 0xB has invalid maxpacket 1023, setting to 64 usb 4-1: config 0 interface 176 altsetting 128 has a duplicate endpoint with address 0xB, skipping usb 4-1: config 0 interface 176 altsetting 128 endpoint 0x4 has invalid maxpacket 1023, setting to 64 usb 4-1: config 0 interface 176 altsetting 128 endpoint 0x6 has invalid maxpacket 1023, setting to 64 usb 4-1: config 0 interface 44 altsetting 8 has 0 endpoint descriptors, different from the interface descriptor's value: 11 usb 4-1: config 0 interface 0 altsetting 4 has an invalid endpoint with address 0x0, skipping usb 4-1: config 0 interface 0 altsetting 4 has an invalid endpoint with address 0x0, skipping usb 4-1: config 0 interface 0 altsetting 4 has a duplicate endpoint with address 0xA, skipping usb 4-1: config 0 interface 176 has no altsetting 0 usb 4-1: config 0 interface 44 has no altsetting 0 usb 4-1: config 0 interface 0 has no altsetting 0 usb 4-1: New USB device found, idVendor=0471, idProduct=1237, bcdDevice=a3.52 usb 4-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 4-1: Product: ࠚ usb 4-1: Manufacturer: ࠇ usb 4-1: SerialNumber: syz usb 4-1: config 0 descriptor?? usb 4-1: reset high-speed USB device number 97 using dummy_hcd usb 4-1: device descriptor read/64, error -71 usb 4-1: Using ep0 maxpacket: 32 usb 4-1: read over firmware interface failed: -71 usb 4-1: reset high-speed USB device number 97 using dummy_hcd usb 4-1: Using ep0 maxpacket: 32 usb 4-1: device firmware changed zd1211rw: probe of 4-1:0.176 failed with error -71 zd1211rw 4-1:0.44: couldn't reset usb device. Error number -22 zd1211rw: probe of 4-1:0.44 failed with error -22 zd1211rw 4-1:0.0: couldn't reset usb device. Error number -22 zd1211rw: probe of 4-1:0.0 failed with error -22 usb 4-1: USB disconnect, device number 97 usb 4-1: new high-speed USB device number 98 using dummy_hcd usb 4-1: Using ep0 maxpacket: 32 usb 4-1: config 0 has an invalid interface number: 176 but max is 2 usb 4-1: config 0 contains an unexpected descriptor of type 0x2, skipping usb 4-1: config 0 has an invalid interface number: 44 but max is 2 usb 4-1: config 0 contains an unexpected descriptor of type 0x2, skipping usb 4-1: config 0 contains an unexpected descriptor of type 0x1, skipping usb 4-1: config 0 has no interface number 1 usb 4-1: config 0 has no interface number 2 usb 4-1: config 0 interface 176 altsetting 128 endpoint 0x8 has invalid maxpacket 1463, setting to 64 usb 4-1: config 0 interface 176 altsetting 128 endpoint 0x7 has invalid maxpacket 512, setting to 64 usb 4-1: config 0 interface 176 altsetting 128 endpoint 0xB has invalid maxpacket 1023, setting to 64 usb 4-1: config 0 interface 176 altsetting 128 has a duplicate endpoint with address 0xB, skipping usb 4-1: config 0 interface 176 altsetting 128 endpoint 0x4 has invalid maxpacket 1023, setting to 64 usb 4-1: config 0 interface 176 altsetting 128 endpoint 0x6 has invalid maxpacket 1023, setting to 64 usb 4-1: config 0 interface 44 altsetting 8 has 0 endpoint descriptors, different from the interface descriptor's value: 11 usb 4-1: config 0 interface 0 altsetting 4 has an invalid endpoint with address 0x0, skipping usb 4-1: config 0 interface 0 altsetting 4 has an invalid endpoint with address 0x0, skipping usb 4-1: config 0 interface 176 has no altsetting 0 usb 4-1: config 0 interface 44 has no altsetting 0 usb 4-1: config 0 interface 0 has no altsetting 0 usb 4-1: New USB device found, idVendor=0471, idProduct=1237, bcdDevice=a3.52 usb 4-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3 usb 4-1: Product: ࠚ usb 4-1: Manufacturer: ࠇ usb 4-1: SerialNumber: syz usb 4-1: config 0 descriptor?? usb 4-1: reset high-speed USB device number 98 using dummy_hcd