INFO: task kworker/0:32:15035 blocked for more than 143 seconds. Not tainted 5.15.0-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:kworker/0:32 state:D stack:26640 pid:15035 ppid: 2 flags:0x00004000 Workqueue: usb_hub_wq hub_event Call Trace: context_switch kernel/sched/core.c:4969 [inline] __schedule+0xa9a/0x4940 kernel/sched/core.c:6250 schedule+0xd2/0x260 kernel/sched/core.c:6323 usb_kill_urb.part.0+0x19a/0x220 drivers/usb/core/urb.c:720 usb_kill_urb+0x7f/0xa0 drivers/usb/core/urb.c:715 usb_start_wait_urb+0x24a/0x4c0 drivers/usb/core/message.c:64 usb_internal_control_msg drivers/usb/core/message.c:102 [inline] usb_control_msg+0x31c/0x4a0 drivers/usb/core/message.c:153 hub_port_init+0x82e/0x2f10 drivers/usb/core/hub.c:4829 hub_port_connect drivers/usb/core/hub.c:5280 [inline] hub_port_connect_change drivers/usb/core/hub.c:5488 [inline] port_event drivers/usb/core/hub.c:5634 [inline] hub_event+0x2190/0x4330 drivers/usb/core/hub.c:5716 process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298 worker_thread+0x658/0x11f0 kernel/workqueue.c:2445 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8b983a20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6461 2 locks held by kswapd1/99: 1 lock held by systemd-journal/2928: #0: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:4585 [inline] #0: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:4609 [inline] #0: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath.constprop.0+0xa1e/0x20d0 mm/page_alloc.c:5007 1 lock held by systemd-udevd/2945: #0: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:4585 [inline] #0: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:4609 [inline] #0: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath.constprop.0+0xa1e/0x20d0 mm/page_alloc.c:5007 1 lock held by in:imklog/6186: 3 locks held by kworker/u4:3/25201: 5 locks held by kworker/0:32/15035: #0: ffff888013d84d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888013d84d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888013d84d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1198 [inline] #0: ffff888013d84d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:635 [inline] #0: ffff888013d84d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:662 [inline] #0: ffff888013d84d38 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x896/0x1690 kernel/workqueue.c:2269 #1: ffffc9000516fdb0 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x8ca/0x1690 kernel/workqueue.c:2273 #2: ffff88801dcd8220 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:760 [inline] #2: ffff88801dcd8220 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4330 drivers/usb/core/hub.c:5662 #3: ffff88801dcdb5c0 (&port_dev->status_lock){+.+.}-{3:3}, at: usb_lock_port drivers/usb/core/hub.c:3086 [inline] #3: ffff88801dcdb5c0 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect drivers/usb/core/hub.c:5279 [inline] #3: ffff88801dcdb5c0 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_port_connect_change drivers/usb/core/hub.c:5488 [inline] #3: ffff88801dcdb5c0 (&port_dev->status_lock){+.+.}-{3:3}, at: port_event drivers/usb/core/hub.c:5634 [inline] #3: ffff88801dcdb5c0 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x2178/0x4330 drivers/usb/core/hub.c:5716 #4: ffff88801d9cfb68 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_port_init+0x1b5/0x2f10 drivers/usb/core/hub.c:4703 1 lock held by systemd-udevd/28019: #0: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:4585 [inline] #0: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:4609 [inline] #0: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath.constprop.0+0xa1e/0x20d0 mm/page_alloc.c:5007 1 lock held by syz-executor.0/28448: #0: ffff888079f73228 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline] #0: ffff888079f73228 (&mm->mmap_lock#2){++++}-{3:3}, at: vm_mmap_pgoff+0x15c/0x290 mm/util.c:517 1 lock held by syz-executor.4/28449: #0: ffff888079f77128 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline] #0: ffff888079f77128 (&mm->mmap_lock#2){++++}-{3:3}, at: vm_mmap_pgoff+0x15c/0x290 mm/util.c:517 2 locks held by syz-executor.4/28454: #0: ffff888079f77128 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff888079f77128 (&mm->mmap_lock#2){++++}-{3:3}, at: __mm_populate+0x264/0x3e0 mm/gup.c:1581 #1: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:4585 [inline] #1: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:4609 [inline] #1: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath.constprop.0+0xa1e/0x20d0 mm/page_alloc.c:5007 1 lock held by syz-executor.1/28450: #0: ffff888079f70f28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline] #0: ffff888079f70f28 (&mm->mmap_lock#2){++++}-{3:3}, at: vm_mmap_pgoff+0x15c/0x290 mm/util.c:517 2 locks held by syz-executor.1/28456: #0: ffff888079f70f28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff888079f70f28 (&mm->mmap_lock#2){++++}-{3:3}, at: __mm_populate+0x264/0x3e0 mm/gup.c:1581 #1: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:4585 [inline] #1: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:4609 [inline] #1: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath.constprop.0+0xa1e/0x20d0 mm/page_alloc.c:5007 2 locks held by syz-executor.0/28453: #0: ffff888079f73228 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff888079f73228 (&mm->mmap_lock#2){++++}-{3:3}, at: __mm_populate+0x264/0x3e0 mm/gup.c:1581 #1: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:4585 [inline] #1: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:4609 [inline] #1: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath.constprop.0+0xa1e/0x20d0 mm/page_alloc.c:5007 1 lock held by syz-executor.5/28480: #0: ffff888079f74e28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline] #0: ffff888079f74e28 (&mm->mmap_lock#2){++++}-{3:3}, at: vm_mmap_pgoff+0x15c/0x290 mm/util.c:517 2 locks held by syz-executor.5/28491: #0: ffffffff8ba57f70 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mmap kernel/fork.c:497 [inline] #0: ffffffff8ba57f70 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mm+0x108/0x13e0 kernel/fork.c:1450 #1: ffff888079f74e28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline] #1: ffff888079f74e28 (&mm->mmap_lock#2){++++}-{3:3}, at: dup_mmap kernel/fork.c:498 [inline] #1: ffff888079f74e28 (&mm->mmap_lock#2){++++}-{3:3}, at: dup_mm+0x12e/0x13e0 kernel/fork.c:1450 1 lock held by syz-executor.3/28481: #0: ffff88816ff5ab28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline] #0: ffff88816ff5ab28 (&mm->mmap_lock#2){++++}-{3:3}, at: vm_mmap_pgoff+0x15c/0x290 mm/util.c:517 2 locks held by syz-executor.3/28506: #0: ffff88816ff5ab28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff88816ff5ab28 (&mm->mmap_lock#2){++++}-{3:3}, at: __mm_populate+0x264/0x3e0 mm/gup.c:1581 #1: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:4585 [inline] #1: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:4609 [inline] #1: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath.constprop.0+0xa1e/0x20d0 mm/page_alloc.c:5007 1 lock held by syz-executor.3/28528: #0: ffff88816ff5ab28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff88816ff5ab28 (&mm->mmap_lock#2){++++}-{3:3}, at: do_user_addr_fault+0x9d6/0x11c0 arch/x86/mm/fault.c:1348 2 locks held by syz-executor.5/28490: #0: ffff888079f74e28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff888079f74e28 (&mm->mmap_lock#2){++++}-{3:3}, at: __mm_populate+0x264/0x3e0 mm/gup.c:1581 #1: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:4585 [inline] #1: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:4609 [inline] #1: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath.constprop.0+0xa1e/0x20d0 mm/page_alloc.c:5007 2 locks held by syz-executor.3/28507: #0: ffffffff8ba57f70 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mmap kernel/fork.c:497 [inline] #0: ffffffff8ba57f70 (dup_mmap_sem){.+.+}-{0:0}, at: dup_mm+0x108/0x13e0 kernel/fork.c:1450 #1: ffff88816ff5ab28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline] #1: ffff88816ff5ab28 (&mm->mmap_lock#2){++++}-{3:3}, at: dup_mmap kernel/fork.c:498 [inline] #1: ffff88816ff5ab28 (&mm->mmap_lock#2){++++}-{3:3}, at: dup_mm+0x12e/0x13e0 kernel/fork.c:1450 1 lock held by syz-executor.2/28551: #0: ffff88804e18a428 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline] #0: ffff88804e18a428 (&mm->mmap_lock#2){++++}-{3:3}, at: vm_mmap_pgoff+0x15c/0x290 mm/util.c:517 2 locks held by syz-executor.2/28553: #0: ffff88804e18a428 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline] #0: ffff88804e18a428 (&mm->mmap_lock#2){++++}-{3:3}, at: __mm_populate+0x264/0x3e0 mm/gup.c:1581 #1: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __perform_reclaim mm/page_alloc.c:4585 [inline] #1: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_direct_reclaim mm/page_alloc.c:4609 [inline] #1: ffffffff8baa7f00 (fs_reclaim){+.+.}-{0:0}, at: __alloc_pages_slowpath.constprop.0+0xa1e/0x20d0 mm/page_alloc.c:5007 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.0-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+0xcd/0x134 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline] watchdog+0xc1d/0xf50 kernel/hung_task.c:295 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 1541 Comm: kworker/u4:17 Not tainted 5.15.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: events_unbound toggle_allocation_gate RIP: 0010:update_load_avg+0x168/0x1830 kernel/sched/fair.c:3812 Code: 4c 8d a5 c0 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 80 3c 02 00 0f 85 d3 11 00 00 48 83 bd c0 00 00 00 00 <74> 18 4c 89 cf 48 89 ea 48 89 de 4c 89 4c 24 08 e8 e3 50 06 00 4c RSP: 0018:ffffc900051ff908 EFLAGS: 00000006 RAX: dffffc0000000000 RBX: ffff8880b9d39b40 RCX: 0000000000000001 RDX: 1ffff110021ce3c8 RSI: 0000000000000002 RDI: ffff8880b9d39cf8 RBP: ffff888010e71d80 R08: ffff8880b9d39b40 R09: 000001fd7558178f R10: 000000000000000c R11: 0000000000000000 R12: ffff888010e71e40 R13: ffff8880b9d39cb0 R14: ffff8880b9d39b88 R15: ffff8880b9d39b80 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9b92eef8b0 CR3: 000000000b68e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: set_next_entity+0x344/0x5e0 kernel/sched/fair.c:4437 pick_next_task_fair+0x6ab/0xe00 kernel/sched/fair.c:7309 __pick_next_task kernel/sched/core.c:5590 [inline] pick_next_task kernel/sched/core.c:5662 [inline] __schedule+0x3e8/0x4940 kernel/sched/core.c:6214 schedule+0xd2/0x260 kernel/sched/core.c:6323 schedule_timeout+0x14a/0x2a0 kernel/time/timer.c:1881 toggle_allocation_gate mm/kfence/core.c:739 [inline] toggle_allocation_gate+0x305/0x390 mm/kfence/core.c:724 process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298 worker_thread+0x658/0x11f0 kernel/workqueue.c:2445 kthread+0x405/0x4f0 kernel/kthread.c:327 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 ---------------- Code disassembly (best guess): 0: 4c 8d a5 c0 00 00 00 lea 0xc0(%rbp),%r12 7: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax e: fc ff df 11: 4c 89 e2 mov %r12,%rdx 14: 48 c1 ea 03 shr $0x3,%rdx 18: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 1c: 0f 85 d3 11 00 00 jne 0x11f5 22: 48 83 bd c0 00 00 00 cmpq $0x0,0xc0(%rbp) 29: 00 * 2a: 74 18 je 0x44 <-- trapping instruction 2c: 4c 89 cf mov %r9,%rdi 2f: 48 89 ea mov %rbp,%rdx 32: 48 89 de mov %rbx,%rsi 35: 4c 89 4c 24 08 mov %r9,0x8(%rsp) 3a: e8 e3 50 06 00 callq 0x65122 3f: 4c rex.WR