INFO: task kworker/0:2:2318 blocked for more than 143 seconds. Not tainted 6.2.0-syzkaller-13467-g0988a0ea7919 #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:2 state:D stack:22416 pid:2318 ppid:2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:5304 [inline] __schedule+0xacf/0x2df0 kernel/sched/core.c:6622 schedule+0xde/0x1a0 kernel/sched/core.c:6698 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6757 rwsem_down_write_slowpath+0x3e2/0x1220 kernel/locking/rwsem.c:1178 __down_write_common kernel/locking/rwsem.c:1306 [inline] __down_write kernel/locking/rwsem.c:1315 [inline] down_write+0x1d2/0x200 kernel/locking/rwsem.c:1574 usb_register_dev drivers/usb/core/file.c:187 [inline] usb_register_dev+0x19c/0x830 drivers/usb/core/file.c:156 usbtmc_probe+0xdae/0x1ad0 drivers/usb/class/usbtmc.c:2459 usb_probe_interface+0x30f/0x960 drivers/usb/core/driver.c:396 call_driver_probe drivers/base/dd.c:552 [inline] really_probe+0x240/0xca0 drivers/base/dd.c:631 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:768 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:798 __device_attach_driver+0x1d4/0x2e0 drivers/base/dd.c:926 bus_for_each_drv+0x149/0x1d0 drivers/base/bus.c:457 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:998 bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532 device_add+0x11c4/0x1c50 drivers/base/core.c:3589 usb_set_configuration+0x10ee/0x1af0 drivers/usb/core/message.c:2171 usb_generic_driver_probe+0xcf/0x130 drivers/usb/core/generic.c:238 usb_probe_device+0xd8/0x2c0 drivers/usb/core/driver.c:293 call_driver_probe drivers/base/dd.c:552 [inline] really_probe+0x240/0xca0 drivers/base/dd.c:631 __driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:768 driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:798 __device_attach_driver+0x1d4/0x2e0 drivers/base/dd.c:926 bus_for_each_drv+0x149/0x1d0 drivers/base/bus.c:457 __device_attach+0x1e4/0x4b0 drivers/base/dd.c:998 bus_probe_device+0x17c/0x1c0 drivers/base/bus.c:532 device_add+0x11c4/0x1c50 drivers/base/core.c:3589 usb_new_device+0xcb2/0x19d0 drivers/usb/core/hub.c:2575 hub_port_connect drivers/usb/core/hub.c:5407 [inline] hub_port_connect_change drivers/usb/core/hub.c:5551 [inline] port_event drivers/usb/core/hub.c:5711 [inline] hub_event+0x2e3d/0x4ed0 drivers/usb/core/hub.c:5793 process_one_work+0x9bf/0x1820 kernel/workqueue.c:2390 worker_thread+0x669/0x1090 kernel/workqueue.c:2537 kthread+0x2ee/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/11: #0: ffffffff87a9b6d0 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x31/0xd80 kernel/rcu/tasks.h:510 1 lock held by khungtaskd/25: #0: ffffffff87a9c220 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x340 kernel/locking/lockdep.c:6495 2 locks held by kworker/u4:5/1497: #0: ffff888100079138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888100079138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888100079138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888100079138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline] #0: ffff888100079138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline] #0: ffff888100079138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x86d/0x1820 kernel/workqueue.c:2361 #1: ffffc9000448fda8 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1820 kernel/workqueue.c:2365 6 locks held by kworker/0:2/2318: #0: ffff888109033d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888109033d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888109033d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888109033d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline] #0: ffff888109033d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline] #0: ffff888109033d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x86d/0x1820 kernel/workqueue.c:2361 #1: ffffc90006ecfda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1820 kernel/workqueue.c:2365 #2: ffff88810ea40190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #2: ffff88810ea40190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c0/0x4ed0 drivers/usb/core/hub.c:5739 #3: ffff88811591e190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #3: ffff88811591e190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x4b0 drivers/base/dd.c:973 #4: ffff888114701118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #4: ffff888114701118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x4b0 drivers/base/dd.c:973 #5: ffffffff88448550 (minor_rwsem){++++}-{3:3}, at: usb_register_dev drivers/usb/core/file.c:187 [inline] #5: ffffffff88448550 (minor_rwsem){++++}-{3:3}, at: usb_register_dev+0x19c/0x830 drivers/usb/core/file.c:156 2 locks held by getty/2413: #0: ffff888108254098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc900000452f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177 2 locks held by kworker/u4:6/2491: #0: ffff888100079138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888100079138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888100079138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888100079138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline] #0: ffff888100079138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline] #0: ffff888100079138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x86d/0x1820 kernel/workqueue.c:2361 #1: ffffc900015a7da8 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1820 kernel/workqueue.c:2365 6 locks held by kworker/0:3/5268: #0: ffff888109033d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888109033d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888109033d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888109033d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:639 [inline] #0: ffff888109033d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:666 [inline] #0: ffff888109033d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x86d/0x1820 kernel/workqueue.c:2361 #1: ffffc90001e3fda8 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1820 kernel/workqueue.c:2365 #2: ffff88810eb2d190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #2: ffff88810eb2d190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c0/0x4ed0 drivers/usb/core/hub.c:5739 #3: ffff88811d777190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #3: ffff88811d777190 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x4b0 drivers/base/dd.c:973 #4: ffff888115918118 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:832 [inline] #4: ffff888115918118 (&dev->mutex){....}-{3:3}, at: __device_attach+0x76/0x4b0 drivers/base/dd.c:973 #5: ffffffff88448550 (minor_rwsem){++++}-{3:3}, at: usb_register_dev drivers/usb/core/file.c:187 [inline] #5: ffffffff88448550 (minor_rwsem){++++}-{3:3}, at: usb_register_dev+0x19c/0x830 drivers/usb/core/file.c:156 2 locks held by syz-executor.0/28463: #0: ffffffff88448550 (minor_rwsem){++++}-{3:3}, at: usb_open+0x28/0x2e0 drivers/usb/core/file.c:39 #1: ffff88810c6db8d0 (&(sisusb->lock)){+.+.}-{3:3}, at: sisusb_open+0xb6/0x4e0 drivers/usb/misc/sisusbvga/sisusbvga.c:2213 2 locks held by syz-executor.2/28550: #0: ffffffff88448550 (minor_rwsem){++++}-{3:3}, at: usb_open+0x28/0x2e0 drivers/usb/core/file.c:39 #1: ffff88810c6db8d0 (&(sisusb->lock)){+.+.}-{3:3}, at: sisusb_open+0xb6/0x4e0 drivers/usb/misc/sisusbvga/sisusbvga.c:2213 1 lock held by syz-executor.0/29825: #0: ffffffff88448550 (minor_rwsem){++++}-{3:3}, at: usb_open+0x28/0x2e0 drivers/usb/core/file.c:39 1 lock held by syz-executor.2/29924: #0: ffffffff88448550 (minor_rwsem){++++}-{3:3}, at: usb_open+0x28/0x2e0 drivers/usb/core/file.c:39 1 lock held by modprobe/30756: 2 locks held by modprobe/30757: #0: ffff8881f6839218 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:539 [inline] #0: ffff8881f6839218 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock kernel/sched/sched.h:1366 [inline] #0: ffff8881f6839218 (&rq->__lock){-.-.}-{2:2}, at: rq_lock kernel/sched/sched.h:1653 [inline] #0: ffff8881f6839218 (&rq->__lock){-.-.}-{2:2}, at: __schedule+0x265/0x2df0 kernel/sched/core.c:6539 #1: ffff88810f941298 (&sighand->siglock){....}-{2:2}, at: do_notify_parent+0x779/0xf40 kernel/signal.c:2088 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 25 Comm: khungtaskd Not tainted 6.2.0-syzkaller-13467-g0988a0ea7919 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd9/0x150 lib/dump_stack.c:106 nmi_cpu_backtrace+0x316/0x3e0 lib/nmi_backtrace.c:113 nmi_trigger_cpumask_backtrace+0x333/0x440 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline] watchdog+0xe94/0x11e0 kernel/hung_task.c:379 kthread+0x2ee/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 30760 Comm: modprobe Not tainted 6.2.0-syzkaller-13467-g0988a0ea7919 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 RIP: 0010:__read_once_word_nocheck+0x3/0x10 include/asm-generic/rwonce.h:68 Code: 00 e9 cb fd ff ff e8 1c a1 6c 00 e9 80 fd ff ff e8 12 a1 6c 00 e9 4d fd ff ff e8 08 a1 6c 00 e9 05 fd ff ff 0f 1f 00 48 8b 07 66 66 2e 0f 1f 84 00 00 00 00 00 90 41 57 89 d0 41 56 41 55 41 RSP: 0018:ffffc90000597600 EFLAGS: 00000a06 RAX: ffffffff8620008b RBX: 0000000000000001 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: 1ffff920000b2ed8 RDI: ffffc90000597f50 RBP: ffffc900005976c0 R08: ffffffff89912e38 R09: ffffc900005976ac R10: 0000000080000000 R11: ffffc90000597f50 R12: ffffc900005976c8 R13: ffffc90000597678 R14: ffffc90000597f58 R15: ffffffff89912e3c FS: 0000000000000000(0000) GS:ffff8881f6800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f55903671d0 CR3: 0000000110d20000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: deref_stack_reg arch/x86/kernel/unwind_orc.c:379 [inline] unwind_next_frame+0xafb/0x1ef0 arch/x86/kernel/unwind_orc.c:560 arch_stack_walk+0x81/0xf0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x90/0xc0 kernel/stacktrace.c:122 kasan_save_stack+0x22/0x40 mm/kasan/common.c:45 kasan_set_track+0x25/0x30 mm/kasan/common.c:52 __kasan_slab_alloc+0x55/0x60 mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:186 [inline] slab_post_alloc_hook mm/slab.h:769 [inline] kmem_cache_alloc_bulk+0x430/0x830 mm/slub.c:4034 mt_alloc_bulk lib/maple_tree.c:164 [inline] mas_alloc_nodes+0x276/0x8a0 lib/maple_tree.c:1263 mas_node_count_gfp lib/maple_tree.c:1318 [inline] mas_preallocate+0x1bb/0x360 lib/maple_tree.c:5731 vma_iter_prealloc mm/internal.h:972 [inline] __split_vma+0x1b7/0x7e0 mm/mmap.c:2177 split_vma+0xc6/0x110 mm/mmap.c:2242 mprotect_fixup+0x7ae/0x9b0 mm/mprotect.c:663 do_mprotect_pkey+0x926/0xbe0 mm/mprotect.c:831 __do_sys_mprotect mm/mprotect.c:852 [inline] __se_sys_mprotect mm/mprotect.c:849 [inline] __x64_sys_mprotect+0x78/0xb0 mm/mprotect.c:849 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f5590388297 Code: 44 00 00 b8 0b 00 00 00 0f 05 48 3d 01 f0 ff ff 73 01 c3 48 8d 0d 21 1f 01 00 f7 d8 89 01 48 83 c8 ff c3 b8 0a 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8d 0d 01 1f 01 00 f7 d8 89 01 48 83 RSP: 002b:00007ffcd3724a38 EFLAGS: 00000206 ORIG_RAX: 000000000000000a RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f5590388297 RDX: 0000000000000000 RSI: 000000000001c000 RDI: 00007f55900aa000 RBP: 00007ffcd3724da0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000802 R11: 0000000000000206 R12: 00007ffcd3724a40 R13: 0000000000000000 R14: 0000000000000001 R15: 00007f5590366f00