./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor814728154 <...> Warning: Permanently added '10.128.0.67' (ED25519) to the list of known hosts. execve("./syz-executor814728154", ["./syz-executor814728154"], 0x7ffc300abfe0 /* 10 vars */) = 0 brk(NULL) = 0x555556e2a000 brk(0x555556e2ad00) = 0x555556e2ad00 arch_prctl(ARCH_SET_FS, 0x555556e2a380) = 0 set_tid_address(0x555556e2a650) = 5053 set_robust_list(0x555556e2a660, 24) = 0 rseq(0x555556e2aca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor814728154", 4096) = 27 getrandom("\x7f\xe5\xba\x3f\xfb\xef\x19\xa9", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556e2ad00 brk(0x555556e4bd00) = 0x555556e4bd00 brk(0x555556e4c000) = 0x555556e4c000 mprotect(0x7f9e6bf94000, 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5054 attached [pid 5054] set_robust_list(0x555556e2a660, 24) = 0 [pid 5054] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5053] <... clone resumed>, child_tidptr=0x555556e2a650) = 5054 [pid 5054] <... prctl resumed>) = 0 [pid 5054] setpgid(0, 0) = 0 [pid 5054] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5054] write(3, "1000", 4) = 4 [pid 5054] close(3) = 0 [pid 5054] openat(AT_FDCWD, "/dev/nbd0", O_RDONLY) = 3 [pid 5054] socket(AF_AX25, SOCK_DGRAM, 0 /* AX25_P_??? */) = 4 [ 77.120503][ T28] audit: type=1400 audit(1706397578.900:86): avc: denied { execmem } for pid=5053 comm="syz-executor814" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [pid 5054] dup(4) = 5 [ 77.153136][ T28] audit: type=1400 audit(1706397578.930:87): avc: denied { read } for pid=5054 comm="syz-executor814" name="nbd0" dev="devtmpfs" ino=664 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 77.177328][ T28] audit: type=1400 audit(1706397578.930:88): avc: denied { open } for pid=5054 comm="syz-executor814" path="/dev/nbd0" dev="devtmpfs" ino=664 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 5054] ioctl(3, NBD_SET_SOCK, 5) = 0 [ 77.202176][ T28] audit: type=1400 audit(1706397578.930:89): avc: denied { create } for pid=5054 comm="syz-executor814" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=ax25_socket permissive=1 [ 77.222013][ T28] audit: type=1400 audit(1706397578.960:90): avc: denied { ioctl } for pid=5054 comm="syz-executor814" path="/dev/nbd0" dev="devtmpfs" ino=664 ioctlcmd=0xab00 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 5054] ioctl(3, NBD_DO_IT [pid 5053] kill(-5054, SIGKILL) = 0 [pid 5053] kill(5054, SIGKILL) = 0 [ 82.130407][ T5054] block nbd0: shutting down sockets [pid 5053] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5053] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5053] getdents64(3, 0x555556e2b6f0 /* 2 entries */, 32768) = 48 [pid 5053] getdents64(3, 0x555556e2b6f0 /* 0 entries */, 32768) = 0 [pid 5053] close(3) = 0 [ 87.278205][ T1781] cfg80211: failed to load regulatory.db [ 286.955779][ T29] INFO: task syz-executor814:5054 blocked for more than 143 seconds. [ 286.966217][ T29] Not tainted 6.8.0-rc1-syzkaller-00311-g3a5879d495b2 #0 [ 286.975355][ T29] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.985120][ T29] task:syz-executor814 state:D stack:27648 pid:5054 tgid:5054 ppid:5053 flags:0x00004006 [ 286.996866][ T29] Call Trace: [ 287.002291][ T29] [ 287.005216][ T29] __schedule+0xf12/0x5c00 [ 287.009890][ T29] ? lockdep_hardirqs_on_prepare+0x420/0x420 [ 287.015979][ T29] ? hlock_class+0x4e/0x130 [ 287.020487][ T29] ? io_schedule_timeout+0x150/0x150 [ 287.025814][ T29] ? schedule+0x1fc/0x270 [ 287.030205][ T29] ? reacquire_held_locks+0x4c0/0x4c0 [ 287.035687][ T29] schedule+0xe9/0x270 [ 287.039804][ T29] schedule_timeout+0x257/0x290 [ 287.044656][ T29] ? usleep_range_state+0x1a0/0x1a0 [ 287.049926][ T29] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.055215][ T29] __wait_for_common+0x3e0/0x5f0 [ 287.060314][ T29] ? usleep_range_state+0x1a0/0x1a0 [ 287.065645][ T29] ? out_of_line_wait_on_bit_timeout+0x170/0x170 [ 287.071978][ T29] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.077229][ T29] ? flush_workqueue_prep_pwqs+0x28f/0x4f0 [ 287.083101][ T29] ? check_flush_dependency+0x86/0x460 [ 287.088614][ T29] __flush_workqueue+0x3e0/0x1340 [ 287.093659][ T29] ? blk_mq_run_hw_queue+0x2b1/0x9a0 [ 287.099076][ T29] ? apply_wqattrs_cleanup.part.0+0x2b0/0x2b0 [ 287.105177][ T29] ? blk_mq_run_hw_queues+0x1fb/0x290 [ 287.110866][ T29] ? nbd_ioctl+0x308/0xd60 [ 287.115466][ T29] nbd_ioctl+0x308/0xd60 [ 287.119781][ T29] ? nbd_start_device+0xe00/0xe00 [ 287.124841][ T29] ? prepare_to_swait_exclusive+0x240/0x240 [ 287.130834][ T29] ? nbd_start_device+0xe00/0xe00 [ 287.135908][ T29] blkdev_ioctl+0x2f3/0x760 [ 287.140403][ T29] ? blkdev_common_ioctl+0x1cc0/0x1cc0 [ 287.145977][ T29] ? selinux_file_ioctl+0xb5/0x270 [ 287.151218][ T29] ? blkdev_common_ioctl+0x1cc0/0x1cc0 [ 287.156824][ T29] __x64_sys_ioctl+0x18f/0x210 [ 287.161654][ T29] do_syscall_64+0xd3/0x250 [ 287.166348][ T29] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 287.172315][ T29] RIP: 0033:0x7f9e6bf21879 [ 287.176780][ T29] RSP: 002b:00007fffbf638dc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 287.185206][ T29] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9e6bf21879 [ 287.193337][ T29] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000003 [ 287.201438][ T29] RBP: 00007f9e6bf945f0 R08: 0000000000000006 R09: 0000000000000006 [ 287.211205][ T29] R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000001 [ 287.219333][ T29] R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001 [ 287.227386][ T29] [ 287.230441][ T29] [ 287.230441][ T29] Showing all locks held in the system: [ 287.238570][ T29] 1 lock held by khungtaskd/29: [ 287.243976][ T29] #0: ffffffff8d1a9120 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 [ 287.255034][ T29] 2 locks held by kworker/u4:12/2912: [ 287.260476][ T29] 2 locks held by kworker/u5:1/4446: [ 287.265801][ T29] #0: ffff88801e6d4538 ((wq_completion)nbd0-recv){+.+.}-{0:0}, at: process_one_work+0x789/0x15d0 [ 287.276463][ T29] #1: ffffc9000d6d7d80 ((work_completion)(&args->work)){+.+.}-{0:0}, at: process_one_work+0x7eb/0x15d0 [ 287.287866][ T29] 2 locks held by getty/4805: [ 287.292531][ T29] #0: ffff888029a370a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 [ 287.302497][ T29] #1: ffffc900015b02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfc6/0x1490 [ 287.312704][ T29] [ 287.315022][ T29] ============================================= [ 287.315022][ T29] [ 287.323486][ T29] NMI backtrace for cpu 0 [ 287.327835][ T29] CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc1-syzkaller-00311-g3a5879d495b2 #0 [ 287.337646][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 287.347706][ T29] Call Trace: [ 287.351336][ T29] [ 287.354469][ T29] dump_stack_lvl+0xd9/0x1b0 [ 287.359225][ T29] nmi_cpu_backtrace+0x277/0x390 [ 287.364319][ T29] ? lapic_can_unplug_cpu+0xa0/0xa0 [ 287.370158][ T29] nmi_trigger_cpumask_backtrace+0x299/0x300 [ 287.378163][ T29] watchdog+0xf87/0x1210 [ 287.384044][ T29] ? proc_dohung_task_timeout_secs+0x90/0x90 [ 287.392106][ T29] ? lockdep_hardirqs_on+0x7d/0x110 [ 287.398295][ T29] ? __kthread_parkme+0x14b/0x220 [ 287.403341][ T29] ? proc_dohung_task_timeout_secs+0x90/0x90 [ 287.409333][ T29] kthread+0x2c6/0x3a0 [ 287.413413][ T29] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.418622][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 287.424260][ T29] ret_from_fork+0x45/0x80 [ 287.428710][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 287.434446][ T29] ret_from_fork_asm+0x11/0x20 [ 287.439243][ T29] [ 287.443599][ T29] Sending NMI from CPU 0 to CPUs 1: [ 287.448882][ C1] NMI backtrace for cpu 1 [ 287.448892][ C1] CPU: 1 PID: 4492 Comm: klogd Not tainted 6.8.0-rc1-syzkaller-00311-g3a5879d495b2 #0 [ 287.448914][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 287.448925][ C1] RIP: 0010:unwind_next_frame+0x310/0x2390 [ 287.448952][ C1] Code: 76 c4 4c 00 8b 54 24 34 48 8d 14 52 48 8d 94 12 4c 93 bf 8f 48 81 fa ac 1e 76 90 0f 87 e8 09 00 00 e8 54 c4 4c 00 8b 54 24 34 <4c> 89 e1 4c 89 ee 8b 44 24 28 4a 8d 3c b5 0c e1 45 8f 29 c2 e8 c7 [ 287.448971][ C1] RSP: 0018:ffffc90003447458 EFLAGS: 00000293 [ 287.448988][ C1] RAX: 0000000000000000 RBX: ffffc900034474d8 RCX: ffffffff813a4741 [ 287.449001][ C1] RDX: 0000000000176cb7 RSI: ffffffff813a481c RDI: ffffffff9093e00c [ 287.449015][ C1] RBP: 0000000000000001 R08: 0000000000000004 R09: 0000000000077057 [ 287.449027][ C1] R10: 000000000009c000 R11: 0000000000000200 R12: ffffffff887057e4 [ 287.449040][ C1] R13: ffffffff904c1f90 R14: 0000000000176cb6 R15: ffffc9000344750d [ 287.449054][ C1] FS: 00007f37378a6380(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 [ 287.449075][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.449089][ C1] CR2: 0000564465ab3680 CR3: 000000002b915000 CR4: 00000000003506f0 [ 287.449102][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 287.449114][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 287.449126][ C1] Call Trace: [ 287.449132][ C1] [ 287.449138][ C1] ? show_regs+0x8f/0xa0 [ 287.449163][ C1] ? nmi_cpu_backtrace+0x1d4/0x390 [ 287.449189][ C1] ? nmi_cpu_backtrace_handler+0xc/0x10 [ 287.449220][ C1] ? nmi_handle+0x1a6/0x570 [ 287.449245][ C1] ? unwind_next_frame+0x310/0x2390 [ 287.449264][ C1] ? default_do_nmi+0x6a/0x160 [ 287.449284][ C1] ? exc_nmi+0x186/0x200 [ 287.449302][ C1] ? end_repeat_nmi+0xf/0x2a [ 287.449328][ C1] ? __sys_sendto+0x224/0x310 [ 287.449434][ C1] ? unwind_next_frame+0x231/0x2390 [ 287.449453][ C1] ? unwind_next_frame+0x30c/0x2390 [ 287.449472][ C1] ? unwind_next_frame+0x310/0x2390 [ 287.449492][ C1] ? unwind_next_frame+0x310/0x2390 [ 287.449512][ C1] ? unwind_next_frame+0x310/0x2390 [ 287.449532][ C1] [ 287.449537][ C1] [ 287.449543][ C1] ? __sys_sendto+0x225/0x310 [ 287.449566][ C1] ? write_profile+0x450/0x450 [ 287.449586][ C1] arch_stack_walk+0xfa/0x170 [ 287.449609][ C1] ? __sys_sendto+0x225/0x310 [ 287.449633][ C1] stack_trace_save+0x96/0xd0 [ 287.449653][ C1] ? filter_irq_stacks+0x90/0x90 [ 287.449674][ C1] kasan_save_stack+0x33/0x50 [ 287.449707][ C1] ? kasan_save_stack+0x33/0x50 [ 287.449733][ C1] ? kasan_save_track+0x14/0x30 [ 287.449758][ C1] ? __kasan_kmalloc+0xa2/0xb0 [ 287.449783][ C1] ? __kmalloc_node_track_caller+0x219/0x460 [ 287.449811][ C1] ? kmalloc_reserve+0xef/0x260 [ 287.449836][ C1] ? __alloc_skb+0x12b/0x330 [ 287.449858][ C1] ? alloc_skb_with_frags+0xe4/0x710 [ 287.449884][ C1] ? sock_alloc_send_pskb+0x7e4/0x970 [ 287.449915][ C1] ? unix_dgram_sendmsg+0x464/0x1ca0 [ 287.449980][ C1] ? __sock_sendmsg+0xd5/0x180 [ 287.450000][ C1] ? __sys_sendto+0x225/0x310 [ 287.450031][ C1] kasan_save_track+0x14/0x30 [ 287.450058][ C1] __kasan_kmalloc+0xa2/0xb0 [ 287.450084][ C1] __kmalloc_node_track_caller+0x219/0x460 [ 287.450108][ C1] ? __alloc_skb+0x12b/0x330 [ 287.450131][ C1] kmalloc_reserve+0xef/0x260 [ 287.450153][ C1] __alloc_skb+0x12b/0x330 [ 287.450175][ C1] ? __napi_build_skb+0x50/0x50 [ 287.450198][ C1] ? __lock_acquire+0x1502/0x3b30 [ 287.450230][ C1] alloc_skb_with_frags+0xe4/0x710 [ 287.450258][ C1] sock_alloc_send_pskb+0x7e4/0x970 [ 287.450290][ C1] ? lock_acquire+0x1ae/0x520 [ 287.450320][ C1] ? sock_wmalloc+0x120/0x120 [ 287.450348][ C1] ? reacquire_held_locks+0x4c0/0x4c0 [ 287.450383][ C1] ? do_raw_spin_lock+0x12e/0x2b0 [ 287.450401][ C1] ? spin_bug+0x1d0/0x1d0 [ 287.450420][ C1] unix_dgram_sendmsg+0x464/0x1ca0 [ 287.450452][ C1] ? tomoyo_socket_bind_permission+0x340/0x340 [ 287.450530][ C1] ? unix_stream_recvmsg+0x1b0/0x1b0 [ 287.450562][ C1] ? unix_stream_recvmsg+0x1b0/0x1b0 [ 287.450593][ C1] __sock_sendmsg+0xd5/0x180 [ 287.450614][ C1] __sys_sendto+0x225/0x310 [ 287.450638][ C1] ? __ia32_sys_getpeername+0xb0/0xb0 [ 287.450663][ C1] ? reacquire_held_locks+0x4c0/0x4c0 [ 287.450695][ C1] ? rcu_is_watching+0x12/0xb0 [ 287.450721][ C1] ? folio_memcg_unlock+0x240/0x240 [ 287.450753][ C1] __x64_sys_sendto+0xe0/0x1b0 [ 287.450777][ C1] ? do_syscall_64+0x93/0x250 [ 287.450806][ C1] ? lockdep_hardirqs_on+0x7d/0x110 [ 287.450828][ C1] do_syscall_64+0xd3/0x250 [ 287.450858][ C1] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 287.450884][ C1] RIP: 0033:0x7f3737a089b5 [ 287.450899][ C1] Code: 8b 44 24 08 48 83 c4 28 48 98 c3 48 98 c3 41 89 ca 64 8b 04 25 18 00 00 00 85 c0 75 26 45 31 c9 45 31 c0 b8 2c 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 7a 48 8b 15 44 c4 0c 00 f7 d8 64 89 02 48 83 [ 287.450918][ C1] RSP: 002b:00007ffd1222db88 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 287.450936][ C1] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f3737a089b5 [ 287.450949][ C1] RDX: 0000000000000088 RSI: 0000557fe5423880 RDI: 0000000000000003 [ 287.450962][ C1] RBP: 0000557fe541d2c0 R08: 0000000000000000 R09: 0000000000000000 [ 287.450974][ C1] R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000013 [ 287.450986][ C1] R13: 00007f3737b96212 R14: 00007ffd1222dc88 R15: 0000000000000000 [ 287.451002][ C1] [ 287.451009][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.127 msecs [ 287.451951][ T29] Kernel panic - not syncing: hung_task: blocked tasks [ 288.035583][ T29] CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.8.0-rc1-syzkaller-00311-g3a5879d495b2 #0 [ 288.045389][ T29] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 288.055549][ T29] Call Trace: [ 288.058842][ T29] [ 288.061788][ T29] dump_stack_lvl+0xd9/0x1b0 [ 288.066402][ T29] panic+0x6dc/0x790 [ 288.070451][ T29] ? panic_smp_self_stop+0xa0/0xa0 [ 288.075595][ T29] ? preempt_schedule_thunk+0x1a/0x30 [ 288.080993][ T29] ? lapic_can_unplug_cpu+0xa0/0xa0 [ 288.086203][ T29] ? preempt_schedule_thunk+0x1a/0x30 [ 288.091586][ T29] ? watchdog+0xd3e/0x1210 [ 288.096006][ T29] ? watchdog+0xd31/0x1210 [ 288.100438][ T29] watchdog+0xd4f/0x1210 [ 288.104772][ T29] ? proc_dohung_task_timeout_secs+0x90/0x90 [ 288.110846][ T29] ? lockdep_hardirqs_on+0x7d/0x110 [ 288.116053][ T29] ? __kthread_parkme+0x14b/0x220 [ 288.121083][ T29] ? proc_dohung_task_timeout_secs+0x90/0x90 [ 288.127070][ T29] kthread+0x2c6/0x3a0 [ 288.131142][ T29] ? _raw_spin_unlock_irq+0x23/0x50 [ 288.136352][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 288.141987][ T29] ret_from_fork+0x45/0x80 [ 288.146410][ T29] ? kthread_complete_and_exit+0x40/0x40 [ 288.152049][ T29] ret_from_fork_asm+0x11/0x20 [ 288.156825][ T29] [ 288.160138][ T29] Kernel Offset: disabled [ 288.164477][ T29] Rebooting in 86400 seconds..