INFO: task syz-executor.3:22963 blocked for more than 143 seconds. Not tainted 5.15.0-rc6-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.3 state:D stack:25848 pid:22963 ppid: 6554 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:4940 [inline] __schedule+0xb72/0x1460 kernel/sched/core.c:6287 schedule+0x14b/0x210 kernel/sched/core.c:6366 schedule_timeout+0xac/0x300 kernel/time/timer.c:1857 do_wait_for_common+0x2da/0x480 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_timeout+0x46/0x60 kernel/sched/completion.c:157 usb_start_wait_urb+0x160/0x530 drivers/usb/core/message.c:63 do_proc_bulk+0x970/0x1060 drivers/usb/core/devio.c:1236 proc_bulk drivers/usb/core/devio.c:1273 [inline] usbdev_do_ioctl drivers/usb/core/devio.c:2547 [inline] usbdev_ioctl+0x36b9/0x6d00 drivers/usb/core/devio.c:2713 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:874 [inline] __se_sys_ioctl+0xfb/0x170 fs/ioctl.c:860 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x44/0xd0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7fcbd318ca39 RSP: 002b:00007fcbd0702188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fcbd328ff60 RCX: 00007fcbd318ca39 RDX: 0000000020000000 RSI: 00000000c0185502 RDI: 0000000000000003 RBP: 00007fcbd31e6e8f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd7c20502f R14: 00007fcbd0702300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by khungtaskd/27: #0: ffffffff8c91c980 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 1 lock held by in:imklog/6197: 3 locks held by kworker/u4:9/13397: #0: ffff8880b9d31558 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x25/0x110 kernel/sched/core.c:474 #1: ffff8880b9d1f888 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x46c/0x780 kernel/sched/psi.c:871 #2: ffff8880b9d200d8 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x12a/0x270 kernel/time/timer.c:946 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.0-rc6-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+0x1dc/0x2d8 lib/dump_stack.c:106 nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0x16a/0x280 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+0xc82/0xcd0 kernel/hung_task.c:295 kthread+0x453/0x480 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 159 Comm: kworker/u4:3 Not tainted 5.15.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: phy10 ieee80211_iface_work RIP: 0010:match_held_lock+0x0/0xb0 kernel/locking/lockdep.c:5073 Code: db 48 c7 c7 c0 ec 4e 8a 48 c7 c6 00 ed 4e 8a 31 c0 e8 94 3e 53 f7 0f 0b eb 8b 0f 0b eb 87 e8 c7 fa ff ff 0f 1f 80 00 00 00 00 <55> 53 bd 01 00 00 00 48 39 77 10 74 67 48 89 fb 81 7f 20 00 00 10 RSP: 0018:ffffc90001bff290 EFLAGS: 00000083 RAX: 0000000000000004 RBX: ffff888018878a48 RCX: 0000000080000001 RDX: 0000000000000000 RSI: ffffffff8c91c8e0 RDI: ffff888018878a48 RBP: 0000000000000001 R08: dffffc0000000000 R09: ffffed10173a64a2 R10: ffffed10173a64a2 R11: 0000000000000000 R12: 0000000000000246 R13: ffff888018878000 R14: 00000000ffffffff R15: ffffffff8c91c8e0 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f19b78b9000 CR3: 000000000c68e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __lock_is_held kernel/locking/lockdep.c:5368 [inline] lock_is_held_type+0xb1/0x190 kernel/locking/lockdep.c:5668 lock_is_held include/linux/lockdep.h:283 [inline] rcu_read_lock_sched_held+0x89/0x130 kernel/rcu/update.c:125 trace_lock_release+0x4f/0x150 include/trace/events/lock.h:58 lock_release+0x82/0x810 kernel/locking/lockdep.c:5636 rcu_read_unlock include/linux/rcupdate.h:720 [inline] ieee80211_update_sta_info net/mac80211/ibss.c:1097 [inline] ieee80211_rx_bss_info net/mac80211/ibss.c:1117 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1608 [inline] ieee80211_ibss_rx_queued_mgmt+0x16e8/0x2b40 net/mac80211/ibss.c:1635 ieee80211_iface_process_skb net/mac80211/iface.c:1439 [inline] ieee80211_iface_work+0x709/0xc90 net/mac80211/iface.c:1493 process_one_work+0x853/0x1140 kernel/workqueue.c:2297 worker_thread+0xac1/0x1320 kernel/workqueue.c:2444 kthread+0x453/0x480 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 ---------------- Code disassembly (best guess): 0: db 48 c7 fisttpl -0x39(%rax) 3: c7 c0 ec 4e 8a 48 mov $0x488a4eec,%eax 9: c7 c6 00 ed 4e 8a mov $0x8a4eed00,%esi f: 31 c0 xor %eax,%eax 11: e8 94 3e 53 f7 callq 0xf7533eaa 16: 0f 0b ud2 18: eb 8b jmp 0xffffffa5 1a: 0f 0b ud2 1c: eb 87 jmp 0xffffffa5 1e: e8 c7 fa ff ff callq 0xfffffaea 23: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) * 2a: 55 push %rbp <-- trapping instruction 2b: 53 push %rbx 2c: bd 01 00 00 00 mov $0x1,%ebp 31: 48 39 77 10 cmp %rsi,0x10(%rdi) 35: 74 67 je 0x9e 37: 48 89 fb mov %rdi,%rbx 3a: 81 .byte 0x81 3b: 7f 20 jg 0x5d 3d: 00 00 add %al,(%rax) 3f: 10 .byte 0x10