./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor4097296608 <...> Warning: Permanently added '10.128.10.38' (ED25519) to the list of known hosts. execve("./syz-executor4097296608", ["./syz-executor4097296608"], 0x7ffce6bb26d0 /* 10 vars */) = 0 brk(NULL) = 0x555556bea000 brk(0x555556bead00) = 0x555556bead00 arch_prctl(ARCH_SET_FS, 0x555556bea380) = 0 set_tid_address(0x555556bea650) = 5053 set_robust_list(0x555556bea660, 24) = 0 rseq(0x555556beaca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor4097296608", 4096) = 28 getrandom("\xbe\x11\x97\x14\xb1\xf9\xe1\xd1", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556bead00 brk(0x555556c0bd00) = 0x555556c0bd00 brk(0x555556c0c000) = 0x555556c0c000 mprotect(0x7fca40703000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5054 attached , child_tidptr=0x555556bea650) = 5054 [pid 5054] set_robust_list(0x555556bea660, 24) = 0 [pid 5054] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5054] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5054] setsid() = 1 [pid 5054] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5054] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5054] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5054] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5054] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5054] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5054] unshare(CLONE_NEWNS) = 0 [pid 5054] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5054] unshare(CLONE_NEWIPC) = 0 [pid 5054] unshare(CLONE_NEWCGROUP) = 0 [pid 5054] unshare(CLONE_NEWUTS) = 0 [pid 5054] unshare(CLONE_SYSVSEM) = 0 [pid 5054] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5054] write(3, "16777216", 8) = 8 [pid 5054] close(3) = 0 [pid 5054] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5054] write(3, "536870912", 9) = 9 [pid 5054] close(3) = 0 [pid 5054] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5054] write(3, "1024", 4) = 4 [pid 5054] close(3) = 0 [pid 5054] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5054] write(3, "8192", 4) = 4 [pid 5054] close(3) = 0 [pid 5054] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5054] write(3, "1024", 4) = 4 [pid 5054] close(3) = 0 [pid 5054] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5054] write(3, "1024", 4) = 4 [pid 5054] close(3) = 0 [pid 5054] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5054] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5054] close(3) = 0 [pid 5054] getpid() = 1 [pid 5054] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5054] kill(-2, SIGKILL) = 0 [pid 5054] kill(2, SIGKILL) = 0 [pid 5054] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5054] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5054] getdents64(3, 0x555556beb6f0 /* 2 entries */, 32768) = 48 [pid 5054] getdents64(3, 0x555556beb6f0 /* 0 entries */, 32768) = 0 [pid 5054] close(3) = 0 [ 81.765851][ T9] cfg80211: failed to load regulatory.db [ 286.563824][ T29] INFO: task kworker/0:2:780 blocked for more than 143 seconds. [ 286.571575][ T29] Not tainted 6.8.0-rc6-syzkaller-00024-ge326df53af00 #0 [ 286.579317][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.588127][ T29] task:kworker/0:2 state:D stack:24112 pid:780 tgid:780 ppid:2 flags:0x00004000 [ 286.598368][ T29] Workqueue: usb_hub_wq hub_event [ 286.603530][ T29] Call Trace: [ 286.606889][ T29] [ 286.609835][ T29] __schedule+0x177f/0x49a0 [ 286.614504][ T29] ? __pfx___schedule+0x10/0x10 [ 286.619407][ T29] ? __pfx_lock_release+0x10/0x10 [ 286.624508][ T29] ? lockdep_hardirqs_on_prepare+0x43c/0x780 [ 286.630516][ T29] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.635776][ T29] ? lockdep_hardirqs_on+0x98/0x140 [ 286.641064][ T29] ? schedule+0x8e/0x260 [ 286.645345][ T29] schedule+0x149/0x260 [ 286.649520][ T29] usb_kill_urb+0x1c9/0x300 [ 286.654117][ T29] ? __pfx_usb_kill_urb+0x10/0x10 [ 286.659159][ T29] ? __pfx_autoremove_wake_function+0x10/0x10 [ 286.665277][ T29] usb_start_wait_urb+0x1b0/0x520 [ 286.670320][ T29] ? __pfx_usb_start_wait_urb+0x10/0x10 [ 286.675928][ T29] ? usb_control_msg+0xbb/0x4c0 [ 286.680797][ T29] usb_control_msg+0x2b1/0x4c0 [ 286.685604][ T29] ? __pfx_usb_control_msg+0x10/0x10 [ 286.690902][ T29] ? hub_port_init+0x178/0x2620 [ 286.695840][ T29] ? kmalloc_trace+0x1d6/0x360 [ 286.700656][ T29] ? hub_port_init+0x178/0x2620 [ 286.705557][ T29] hub_port_init+0xc21/0x2620 [ 286.710271][ T29] hub_event+0x2908/0x50f0 [ 286.714819][ T29] ? __pfx_hub_event+0x10/0x10 [ 286.719623][ T29] ? __pfx_lock_acquire+0x10/0x10 [ 286.724699][ T29] ? lockdep_hardirqs_on_prepare+0x43c/0x780 [ 286.730703][ T29] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 286.737095][ T29] ? process_scheduled_works+0x825/0x1420 [ 286.742883][ T29] process_scheduled_works+0x913/0x1420 [ 286.748500][ T29] ? __pfx_process_scheduled_works+0x10/0x10 [ 286.754577][ T29] ? assign_work+0x364/0x3d0 [ 286.759172][ T29] worker_thread+0xa5f/0x1000 [ 286.763917][ T29] ? __pfx_worker_thread+0x10/0x10 [ 286.769050][ T29] kthread+0x2ef/0x390 [ 286.773107][ T29] ? __pfx_worker_thread+0x10/0x10 [ 286.778269][ T29] ? __pfx_kthread+0x10/0x10 [ 286.782870][ T29] ret_from_fork+0x4b/0x80 [ 286.787350][ T29] ? __pfx_kthread+0x10/0x10 [ 286.791951][ T29] ret_from_fork_asm+0x1b/0x30 [ 286.796803][ T29] [ 286.799878][ T29] INFO: task syz-executor409:5057 blocked for more than 143 seconds. [ 286.807984][ T29] Not tainted 6.8.0-rc6-syzkaller-00024-ge326df53af00 #0 [ 286.815556][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.824258][ T29] task:syz-executor409 state:D stack:24248 pid:5057 tgid:5057 ppid:5054 flags:0x00004006 [ 286.834546][ T29] Call Trace: [ 286.837837][ T29] [ 286.840765][ T29] __schedule+0x177f/0x49a0 [ 286.845379][ T29] ? __pfx___schedule+0x10/0x10 [ 286.850267][ T29] ? __pfx_lock_release+0x10/0x10 [ 286.855377][ T29] ? __mutex_trylock_common+0x91/0x2e0 [ 286.860865][ T29] ? schedule+0x8e/0x260 [ 286.865166][ T29] schedule+0x149/0x260 [ 286.869342][ T29] schedule_preempt_disabled+0x13/0x30 [ 286.874898][ T29] __mutex_lock+0x6a3/0xd70 [ 286.879423][ T29] ? __mutex_lock+0x526/0xd70 [ 286.884150][ T29] ? usbdev_release+0x7a/0x7a0 [ 286.888995][ T29] ? __pfx___mutex_lock+0x10/0x10 [ 286.894099][ T29] ? __asan_memset+0x23/0x50 [ 286.898738][ T29] ? __pfx___fsnotify_parent+0x10/0x10 [ 286.904265][ T29] usbdev_release+0x7a/0x7a0 [ 286.908877][ T29] ? __pfx_lock_release+0x10/0x10 [ 286.914086][ T29] ? __pfx_usbdev_release+0x10/0x10 [ 286.919310][ T29] __fput+0x429/0x8a0 [ 286.923337][ T29] __x64_sys_close+0x7e/0x110 [ 286.928068][ T29] do_syscall_64+0xf9/0x240 [ 286.932645][ T29] entry_SYSCALL_64_after_hwframe+0x6f/0x77 [ 286.938663][ T29] RIP: 0033:0x7fca4068f0e0 [ 286.943207][ T29] RSP: 002b:00007ffd4bd0ef78 EFLAGS: 00000202 ORIG_RAX: 0000000000000003 [ 286.951673][ T29] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007fca4068f0e0 [ 286.959737][ T29] RDX: 0000000000000007 RSI: 00007ffd4bd0eab0 RDI: 0000000000000003 [ 286.967909][ T29] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 286.976008][ T29] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000000f4240 [ 286.984111][ T29] R13: 00007ffd4bd0f228 R14: 0000000000000001 R15: 00007ffd4bd0efc0 [ 286.992127][ T29] [ 286.995213][ T29] [ 286.995213][ T29] Showing all locks held in the system: [ 287.002936][ T29] 1 lock held by khungtaskd/29: [ 287.007830][ T29] #0: ffffffff8e130be0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 [ 287.017795][ T29] 5 locks held by kworker/0:2/780: [ 287.022906][ T29] #0: ffff88801aac1538 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 [ 287.034390][ T29] #1: ffffc90003b4fd20 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 [ 287.046322][ T29] #2: ffff888023ac8190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1fe/0x50f0 [ 287.055466][ T29] #3: ffff888023acc510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x255f/0x50f0 [ 287.065469][ T29] #4: ffff8880238d3768 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x259d/0x50f0 [ 287.075218][ T29] 2 locks held by getty/4812: [ 287.079893][ T29] #0: ffff88802a8210a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 287.089755][ T29] #1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b4/0x1e10 [ 287.099981][ T29] 1 lock held by syz-executor409/5057: [ 287.105476][ T29] #0: ffff888023ac8190 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x7a/0x7a0 [ 287.114739][ T29] [ 287.117071][ T29] ============================================= [ 287.117071][ T29] [ 287.125512][ T29] NMI backtrace for cpu 1 [ 287.129844][ T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc6-syzkaller-00024-ge326df53af00 #0 [ 287.139645][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 287.149695][ T29] Call Trace: [ 287.152969][ T29] [ 287.155893][ T29] dump_stack_lvl+0x1e7/0x2e0 [ 287.160576][ T29] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.165773][ T29] ? __pfx__printk+0x10/0x10 [ 287.170358][ T29] ? vprintk_emit+0x607/0x720 [ 287.175032][ T29] ? __pfx_vprintk_emit+0x10/0x10 [ 287.180060][ T29] nmi_cpu_backtrace+0x49c/0x4d0 [ 287.185052][ T29] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.190510][ T29] ? _printk+0xd5/0x120 [ 287.194669][ T29] ? __pfx__printk+0x10/0x10 [ 287.199263][ T29] ? __wake_up_klogd+0xcc/0x110 [ 287.204125][ T29] ? __pfx__printk+0x10/0x10 [ 287.208723][ T29] ? __rcu_read_unlock+0xa0/0x110 [ 287.213764][ T29] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.219749][ T29] nmi_trigger_cpumask_backtrace+0x198/0x320 [ 287.225732][ T29] watchdog+0xfaf/0xff0 [ 287.229908][ T29] ? watchdog+0x1e9/0xff0 [ 287.234246][ T29] ? __pfx_watchdog+0x10/0x10 [ 287.238927][ T29] kthread+0x2ef/0x390 [ 287.242994][ T29] ? __pfx_watchdog+0x10/0x10 [ 287.247675][ T29] ? __pfx_kthread+0x10/0x10 [ 287.252262][ T29] ret_from_fork+0x4b/0x80 [ 287.256678][ T29] ? __pfx_kthread+0x10/0x10 [ 287.261266][ T29] ret_from_fork_asm+0x1b/0x30 [ 287.266045][ T29] [ 287.269143][ T29] Sending NMI from CPU 1 to CPUs 0: [ 287.274407][ C0] NMI backtrace for cpu 0 [ 287.274418][ C0] CPU: 0 PID: 12 Comm: kworker/u4:1 Not tainted 6.8.0-rc6-syzkaller-00024-ge326df53af00 #0 [ 287.274435][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 287.274445][ C0] Workqueue: 0x0 (events_unbound) [ 287.274467][ C0] RIP: 0010:worker_thread+0xa7f/0x1000 [ 287.274496][ C0] Code: 33 00 4c 89 ef e8 e1 d8 ff ff 41 80 3c 1f 00 75 0e eb 14 e8 c3 18 33 00 41 80 3c 1f 00 74 08 4c 89 f7 e8 d4 e8 91 00 49 8b 06 <4c> 39 f0 74 33 41 0f b6 04 1c 84 c0 75 14 83 7d 00 02 7d 2b e8 98 [ 287.274510][ C0] RSP: 0018:ffffc90000117dd8 EFLAGS: 00000046 [ 287.274523][ C0] RAX: ffff888014ca0060 RBX: dffffc0000000000 RCX: ffff888016e9d940 [ 287.274535][ C0] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 [ 287.274545][ C0] RBP: ffff888014ca005c R08: ffffffff815fcd0c R09: 0000000000000000 [ 287.274556][ C0] R10: ffff888016aef110 R11: ffffed1002d5de25 R12: 1ffff1100299400b [ 287.274568][ C0] R13: ffff888016aef100 R14: ffff888014ca0060 R15: 1ffff1100299400c [ 287.274580][ C0] FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 [ 287.274594][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.274605][ C0] CR2: 000055fda7ae9680 CR3: 000000000df32000 CR4: 00000000003506f0 [ 287.274619][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 287.274629][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 287.274639][ C0] Call Trace: [ 287.274644][ C0] [ 287.274650][ C0] ? nmi_cpu_backtrace+0x3c2/0x4d0 [ 287.274670][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 287.274696][ C0] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.274714][ C0] ? nmi_handle+0x2a/0x580 [ 287.274751][ C0] ? nmi_cpu_backtrace_handler+0xc/0x20 [ 287.274771][ C0] ? nmi_handle+0x14f/0x580 [ 287.274786][ C0] ? nmi_handle+0x2a/0x580 [ 287.274802][ C0] ? worker_thread+0xa7f/0x1000 [ 287.274831][ C0] ? default_do_nmi+0x63/0x160 [ 287.274861][ C0] ? exc_nmi+0x123/0x1f0 [ 287.274878][ C0] ? end_repeat_nmi+0xf/0x60 [ 287.274896][ C0] ? pwq_dec_nr_in_flight+0x1dc/0x3e0 [ 287.274919][ C0] ? worker_thread+0xa7f/0x1000 [ 287.274942][ C0] ? worker_thread+0xa7f/0x1000 [ 287.274966][ C0] ? worker_thread+0xa7f/0x1000 [ 287.274989][ C0] [ 287.274993][ C0] [ 287.275009][ C0] ? __pfx_worker_thread+0x10/0x10 [ 287.275031][ C0] kthread+0x2ef/0x390 [ 287.275047][ C0] ? __pfx_worker_thread+0x10/0x10 [ 287.275069][ C0] ? __pfx_kthread+0x10/0x10 [ 287.275085][ C0] ret_from_fork+0x4b/0x80 [ 287.275106][ C0] ? __pfx_kthread+0x10/0x10 [ 287.275121][ C0] ret_from_fork_asm+0x1b/0x30 [ 287.275151][ C0] [ 287.275404][ T29] Kernel panic - not syncing: hung_task: blocked tasks [ 287.541705][ T29] CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc6-syzkaller-00024-ge326df53af00 #0 [ 287.551504][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 [ 287.561552][ T29] Call Trace: [ 287.564832][ T29] [ 287.567771][ T29] dump_stack_lvl+0x1e7/0x2e0 [ 287.572458][ T29] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.577661][ T29] ? __pfx__printk+0x10/0x10 [ 287.582262][ T29] ? vscnprintf+0x5d/0x90 [ 287.586656][ T29] panic+0x349/0x860 [ 287.590556][ T29] ? nmi_trigger_cpumask_backtrace+0x244/0x320 [ 287.596710][ T29] ? __pfx_panic+0x10/0x10 [ 287.601131][ T29] ? nmi_backtrace_stall_check+0x469/0x480 [ 287.606944][ T29] ? irq_work_queue+0xd1/0x150 [ 287.611725][ T29] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.617702][ T29] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.623700][ T29] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.629677][ T29] ? nmi_trigger_cpumask_backtrace+0x251/0x320 [ 287.635830][ T29] watchdog+0xfee/0xff0 [ 287.640001][ T29] ? watchdog+0x1e9/0xff0 [ 287.644344][ T29] ? __pfx_watchdog+0x10/0x10 [ 287.649024][ T29] kthread+0x2ef/0x390 [ 287.653087][ T29] ? __pfx_watchdog+0x10/0x10 [ 287.657764][ T29] ? __pfx_kthread+0x10/0x10 [ 287.662350][ T29] ret_from_fork+0x4b/0x80 [ 287.666768][ T29] ? __pfx_kthread+0x10/0x10 [ 287.671357][ T29] ret_from_fork_asm+0x1b/0x30 [ 287.676132][ T29] [ 287.679451][ T29] Kernel Offset: disabled [ 287.683776][ T29] Rebooting in 86400 seconds..