./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2028526064 <...> Warning: Permanently added '10.128.0.40' (ED25519) to the list of known hosts. execve("./syz-executor2028526064", ["./syz-executor2028526064"], 0x7fff43467160 /* 10 vars */) = 0 brk(NULL) = 0x555556516000 brk(0x555556516d00) = 0x555556516d00 arch_prctl(ARCH_SET_FS, 0x555556516380) = 0 set_tid_address(0x555556516650) = 5051 set_robust_list(0x555556516660, 24) = 0 rseq(0x555556516ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2028526064", 4096) = 28 getrandom("\xb6\xab\x11\x93\xd0\xc6\xb4\x27", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556516d00 brk(0x555556537d00) = 0x555556537d00 brk(0x555556538000) = 0x555556538000 mprotect(0x7f76bb39d000, 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, child_tidptr=0x555556516650) = 5052 ./strace-static-x86_64: Process 5052 attached [pid 5052] set_robust_list(0x555556516660, 24) = 0 [ 76.818955][ T28] audit: type=1400 audit(1705855840.352:86): avc: denied { execmem } for pid=5051 comm="syz-executor202" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [pid 5052] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5052] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5052] setsid() = 1 [pid 5052] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5052] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5052] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5052] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5052] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5052] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5052] unshare(CLONE_NEWNS) = 0 [ 76.878022][ T28] audit: type=1400 audit(1705855840.412:87): avc: denied { mounton } for pid=5052 comm="syz-executor202" path="/sys/fs/fuse/connections" dev="fusectl" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=dir permissive=1 [ 76.902185][ T28] audit: type=1400 audit(1705855840.412:88): avc: denied { mount } for pid=5052 comm="syz-executor202" name="/" dev="fusectl" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [pid 5052] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5052] unshare(CLONE_NEWIPC) = 0 [pid 5052] unshare(CLONE_NEWCGROUP) = 0 [pid 5052] unshare(CLONE_NEWUTS) = 0 [pid 5052] unshare(CLONE_SYSVSEM) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [ 76.959654][ T28] audit: type=1400 audit(1705855840.492:89): avc: denied { mounton } for pid=5052 comm="syz-executor202" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1 [pid 5052] write(3, "16777216", 8) = 8 [pid 5052] close(3) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "536870912", 9) = 9 [pid 5052] close(3) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "1024", 4) = 4 [pid 5052] close(3) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "8192", 4) = 4 [pid 5052] close(3) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "1024", 4) = 4 [pid 5052] close(3) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "1024", 4) = 4 [pid 5052] close(3) = 0 [pid 5052] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5052] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5052] close(3) = 0 [pid 5052] getpid() = 1 [pid 5052] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5052] kill(-2, SIGKILL) = 0 [pid 5052] kill(2, SIGKILL) = 0 [pid 5052] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5052] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5052] getdents64(3, 0x5555565176f0 /* 2 entries */, 32768) = 48 [pid 5052] getdents64(3, 0x5555565176f0 /* 0 entries */, 32768) = 0 [pid 5052] close(3) = 0 [ 87.162256][ T23] cfg80211: failed to load regulatory.db [ 286.840181][ T29] INFO: task kworker/1:1:27 blocked for more than 143 seconds. [ 286.847883][ T29] Not tainted 6.7.0-syzkaller-12991-g7a396820222d #0 [ 286.855127][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.863869][ T29] task:kworker/1:1 state:D stack:26784 pid:27 tgid:27 ppid:2 flags:0x00004000 [ 286.874132][ T29] Workqueue: usb_hub_wq hub_event [ 286.879299][ T29] Call Trace: [ 286.882631][ T29] [ 286.885569][ T29] __schedule+0xf12/0x5c00 [ 286.890074][ T29] ? print_usage_bug.part.0+0x550/0x550 [ 286.895679][ T29] ? io_schedule_timeout+0x150/0x150 [ 286.901018][ T29] ? schedule+0x1fc/0x270 [ 286.905355][ T29] ? reacquire_held_locks+0x4c0/0x4c0 [ 286.910769][ T29] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.915986][ T29] ? lockdep_hardirqs_on+0x7d/0x110 [ 286.921250][ T29] schedule+0xe9/0x270 [ 286.925331][ T29] usb_kill_urb.part.0+0x1c6/0x250 [ 286.930488][ T29] ? usb_anchor_suspend_wakeups+0x40/0x40 [ 286.936238][ T29] ? prepare_to_swait_exclusive+0x240/0x240 [ 286.942194][ T29] ? preempt_count_sub+0x160/0x160 [ 286.947423][ T29] usb_kill_urb+0x83/0xa0 [ 286.951833][ T29] usb_start_wait_urb+0x251/0x4c0 [ 286.957412][ T29] ? usb_api_blocking_completion+0xa0/0xa0 [ 286.963510][ T29] usb_control_msg+0x327/0x4a0 [ 286.968368][ T29] ? usb_start_wait_urb+0x4c0/0x4c0 [ 286.973841][ T29] ? hub_resume+0x3e0/0x3e0 [ 286.978481][ T29] get_bMaxPacketSize0.constprop.0+0xa5/0x1c0 [ 286.985250][ T29] hub_port_init+0x68c/0x39e0 [ 286.989961][ T29] hub_event+0x2b61/0x4e10 [ 286.994480][ T29] ? hub_port_debounce+0x3d0/0x3d0 [ 286.999630][ T29] ? check_irq_usage+0x11f1/0x1490 [ 287.004858][ T29] ? lock_sync+0x190/0x190 [ 287.009292][ T29] ? reacquire_held_locks+0x4c0/0x4c0 [ 287.014710][ T29] process_one_work+0x886/0x15d0 [ 287.019676][ T29] ? lock_sync+0x190/0x190 [ 287.024165][ T29] ? workqueue_congested+0x300/0x300 [ 287.029644][ T29] ? assign_work+0x1a0/0x250 [ 287.034288][ T29] worker_thread+0x8b9/0x1290 [ 287.039021][ T29] ? __kthread_parkme+0x14b/0x220 [ 287.044116][ T29] ? process_one_work+0x15d0/0x15d0 [ 287.049339][ T29] kthread+0x2c6/0x3a0 [ 287.053462][ T29] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.058680][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 287.064373][ T29] ret_from_fork+0x45/0x80 [ 287.068843][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 287.074518][ T29] ret_from_fork_asm+0x11/0x20 [ 287.079321][ T29] [ 287.082490][ T29] INFO: task syz-executor202:5055 blocked for more than 143 seconds. [ 287.090603][ T29] Not tainted 6.7.0-syzkaller-12991-g7a396820222d #0 [ 287.097788][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 287.106510][ T29] task:syz-executor202 state:D stack:26752 pid:5055 tgid:5055 ppid:5052 flags:0x00004006 [ 287.116721][ T29] Call Trace: [ 287.120074][ T29] [ 287.123020][ T29] __schedule+0xf12/0x5c00 [ 287.127462][ T29] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 287.134224][ T29] ? io_schedule_timeout+0x150/0x150 [ 287.139886][ T29] ? schedule+0x1fc/0x270 [ 287.144295][ T29] ? reacquire_held_locks+0x4c0/0x4c0 [ 287.149687][ T29] ? __mutex_lock+0x5b4/0x9d0 [ 287.154402][ T29] ? __mutex_trylock_common+0x78/0x250 [ 287.159880][ T29] schedule+0xe9/0x270 [ 287.164094][ T29] schedule_preempt_disabled+0x13/0x20 [ 287.169566][ T29] __mutex_lock+0x5b9/0x9d0 [ 287.174119][ T29] ? locks_remove_posix+0x28e/0x440 [ 287.179406][ T29] ? usbdev_release+0x87/0x470 [ 287.184349][ T29] ? mutex_trylock+0x130/0x130 [ 287.189157][ T29] ? __fsnotify_update_child_dentry_flags+0x340/0x340 [ 287.195995][ T29] ? locks_remove_file+0x399/0x5a0 [ 287.201196][ T29] ? free_async+0x4e0/0x4e0 [ 287.205697][ T29] ? usbdev_release+0x87/0x470 [ 287.210507][ T29] usbdev_release+0x87/0x470 [ 287.215106][ T29] ? free_async+0x4e0/0x4e0 [ 287.219594][ T29] __fput+0x270/0xb70 [ 287.223687][ T29] __fput_sync+0x47/0x50 [ 287.227944][ T29] __x64_sys_close+0x87/0xf0 [ 287.232647][ T29] do_syscall_64+0xd3/0x250 [ 287.237238][ T29] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 287.243476][ T29] RIP: 0033:0x7f76bb3290e0 [ 287.247902][ T29] RSP: 002b:00007ffed54cc098 EFLAGS: 00000202 ORIG_RAX: 0000000000000003 [ 287.256427][ T29] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f76bb3290e0 [ 287.264467][ T29] RDX: 0000000000000007 RSI: 00007ffed54cbbd0 RDI: 0000000000000003 [ 287.272503][ T29] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 287.280722][ T29] R10: 0000000000000000 R11: 0000000000000202 R12: 00000000000f4240 [ 287.289058][ T29] R13: 00007ffed54cc348 R14: 0000000000000001 R15: 00007ffed54cc0e0 [ 287.297107][ T29] [ 287.300211][ T29] [ 287.300211][ T29] Showing all locks held in the system: [ 287.308895][ T29] 5 locks held by kworker/1:1/27: [ 287.313956][ T29] #0: ffff88801a6e6938 ((wq_completion)usb_hub_wq){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 [ 287.324850][ T29] #1: ffffc90000a2fd80 ((work_completion)(&hub->events)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 [ 287.336157][ T29] #2: ffff888022704190 (&dev->mutex){....}-{3:3}, at: hub_event+0x1c1/0x4e10 [ 287.345119][ T29] #3: ffff888022778510 (&port_dev->status_lock){+.+.}-{3:3}, at: hub_event+0x27fe/0x4e10 [ 287.355107][ T29] #4: ffff8880225d9e38 (hcd->address0_mutex){+.+.}-{3:3}, at: hub_event+0x2827/0x4e10 [ 287.364882][ T29] 1 lock held by khungtaskd/29: [ 287.369724][ T29] #0: ffffffff8d1a9120 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 [ 287.381249][ T29] 2 locks held by getty/4805: [ 287.385926][ T29] #0: ffff88802954b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 [ 287.395820][ T29] #1: ffffc900015d02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc6/0x1490 [ 287.406011][ T29] 1 lock held by syz-executor202/5055: [ 287.411530][ T29] #0: ffff888022704190 (&dev->mutex){....}-{3:3}, at: usbdev_release+0x87/0x470 [ 287.420765][ T29] [ 287.423090][ T29] ============================================= [ 287.423090][ T29] [ 287.431549][ T29] NMI backtrace for cpu 0 [ 287.435878][ T29] CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.7.0-syzkaller-12991-g7a396820222d #0 [ 287.445326][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 287.455390][ T29] Call Trace: [ 287.458747][ T29] [ 287.461668][ T29] dump_stack_lvl+0xd9/0x1b0 [ 287.466339][ T29] nmi_cpu_backtrace+0x277/0x390 [ 287.471269][ T29] ? lapic_can_unplug_cpu+0xa0/0xa0 [ 287.476468][ T29] nmi_trigger_cpumask_backtrace+0x299/0x300 [ 287.482438][ T29] watchdog+0xf87/0x1210 [ 287.486691][ T29] ? proc_dohung_task_timeout_secs+0x90/0x90 [ 287.492671][ T29] ? lockdep_hardirqs_on+0x7d/0x110 [ 287.497879][ T29] ? __kthread_parkme+0x14b/0x220 [ 287.502976][ T29] ? proc_dohung_task_timeout_secs+0x90/0x90 [ 287.509571][ T29] kthread+0x2c6/0x3a0 [ 287.513628][ T29] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.518832][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 287.524458][ T29] ret_from_fork+0x45/0x80 [ 287.528863][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 287.534482][ T29] ret_from_fork_asm+0x11/0x20 [ 287.539240][ T29] [ 287.542419][ T29] Sending NMI from CPU 0 to CPUs 1: [ 287.547656][ C1] NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x1b/0x20 [ 287.548695][ T29] Kernel panic - not syncing: hung_task: blocked tasks [ 287.564438][ T29] CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.7.0-syzkaller-12991-g7a396820222d #0 [ 287.574504][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 287.584558][ T29] Call Trace: [ 287.588841][ T29] [ 287.591879][ T29] dump_stack_lvl+0xd9/0x1b0 [ 287.596483][ T29] panic+0x6dc/0x790 [ 287.600386][ T29] ? panic_smp_self_stop+0xa0/0xa0 [ 287.605500][ T29] ? preempt_schedule_thunk+0x1a/0x30 [ 287.610881][ T29] ? lapic_can_unplug_cpu+0xa0/0xa0 [ 287.616089][ T29] ? preempt_schedule_thunk+0x1a/0x30 [ 287.621471][ T29] ? watchdog+0xd3e/0x1210 [ 287.625890][ T29] ? watchdog+0xd31/0x1210 [ 287.630312][ T29] watchdog+0xd4f/0x1210 [ 287.634650][ T29] ? proc_dohung_task_timeout_secs+0x90/0x90 [ 287.640639][ T29] ? lockdep_hardirqs_on+0x7d/0x110 [ 287.645843][ T29] ? __kthread_parkme+0x14b/0x220 [ 287.651098][ T29] ? proc_dohung_task_timeout_secs+0x90/0x90 [ 287.657179][ T29] kthread+0x2c6/0x3a0 [ 287.661253][ T29] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.666456][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 287.672089][ T29] ret_from_fork+0x45/0x80 [ 287.676509][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 287.682149][ T29] ret_from_fork_asm+0x11/0x20 [ 287.686938][ T29] [ 287.690133][ T29] Kernel Offset: disabled [ 287.694454][ T29] Rebooting in 86400 seconds..