./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2846442574 <...> Warning: Permanently added '10.128.10.58' (ED25519) to the list of known hosts. [ 91.193838][ T24] cfg80211: failed to load regulatory.db execve("./syz-executor2846442574", ["./syz-executor2846442574"], 0x7ffdb6ddf680 /* 10 vars */) = 0 brk(NULL) = 0x555575637000 brk(0x555575637d00) = 0x555575637d00 arch_prctl(ARCH_SET_FS, 0x555575637380) = 0 set_tid_address(0x555575637650) = 5837 set_robust_list(0x555575637660, 24) = 0 rseq(0x555575637ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2846442574", 4096) = 28 getrandom("\x53\xf3\xcd\x0a\x77\xb1\x9e\xa8", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555575637d00 brk(0x555575658d00) = 0x555575658d00 brk(0x555575659000) = 0x555575659000 mprotect(0x7fcbfb881000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5838 attached , child_tidptr=0x555575637650) = 5838 [pid 5838] set_robust_list(0x555575637660, 24) = 0 [pid 5838] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5838] setpgid(0, 0) = 0 [pid 5838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5838] write(3, "1000", 4) = 4 [pid 5838] close(3) = 0 [pid 5838] write(1, "executing program\n", 18executing program ) = 18 [pid 5838] creat("./file0", 000) = 3 [pid 5838] pipe2([4, 5], 0) = 0 [pid 5838] write(5, "\x15\x00\x00\x00\x65\xff\xff\x01\x7f\x00\x0e\x08\x00\x39\x50\x32\x30\x30\x30\x00\x00", 21) = 21 [pid 5838] dup(5) = 6 [pid 5838] write(6, "\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00", 24) = 24 [pid 5838] write(6, "\xb0\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 176) = 176 [pid 5838] write(6, "\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 24) = 24 [pid 5838] write(6, "\x28\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00", 40) = 40 [pid 5838] mount(NULL, "./file0", "9p", 0, "trans=fd,rfdno=0x0000000000000004,wfdno=0x0000000000000006,") = 0 [pid 5838] openat(AT_FDCWD, "./file0", O_RDWR|O_CREAT|O_NONBLOCK|O_NOFOLLOW, 000) = 7 [pid 5838] writev(7, [{iov_base="\x14\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., iov_len=131072}, {iov_base=NULL, iov_len=0}], 2 [pid 5837] kill(-5838, SIGKILL) = 0 [pid 5837] kill(5838, SIGKILL) = 0 [pid 5837] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5837] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5837] getdents64(3, 0x5555756386f0 /* 2 entries */, 32768) = 48 [pid 5837] getdents64(3, 0x5555756386f0 /* 0 entries */, 32768) = 0 [pid 5837] close(3) = 0 [ 285.742372][ T31] INFO: task syz-executor284:5838 blocked for more than 143 seconds. [ 285.750463][ T31] Not tainted 6.16.0-rc4-syzkaller-00013-g66701750d556 #0 [ 285.758162][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 285.767070][ T31] task:syz-executor284 state:D stack:24824 pid:5838 tgid:5838 ppid:5837 task_flags:0x400140 flags:0x00004006 [ 285.779069][ T31] Call Trace: [ 285.782397][ T31] [ 285.785340][ T31] __schedule+0x16f5/0x4d00 [ 285.789860][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 285.795544][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 285.801196][ T31] ? do_raw_spin_lock+0x121/0x290 [ 285.806305][ T31] ? schedule+0x165/0x360 [ 285.810662][ T31] ? __lock_acquire+0xab9/0xd20 [ 285.815568][ T31] ? __pfx___schedule+0x10/0x10 [ 285.820460][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 285.826157][ T31] ? schedule+0x91/0x360 [ 285.830431][ T31] schedule+0x165/0x360 [ 285.834644][ T31] netfs_wait_for_request+0x1f0/0x600 [ 285.840058][ T31] ? __pfx_netfs_write_collection+0x10/0x10 [ 285.846004][ T31] ? __pfx_netfs_wait_for_request+0x10/0x10 [ 285.851922][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 285.857624][ T31] ? __pfx_autoremove_wake_function+0x10/0x10 [ 285.863770][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 285.869409][ T31] netfs_unbuffered_write_iter_locked+0x52a/0x910 [ 285.875893][ T31] netfs_unbuffered_write_iter+0x4c4/0x660 [ 285.881752][ T31] do_iter_readv_writev+0x56e/0x7f0 [ 285.887004][ T31] ? __pfx_do_iter_readv_writev+0x10/0x10 [ 285.892763][ T31] ? rcu_read_lock_any_held+0xb3/0x120 [ 285.898227][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 285.903927][ T31] vfs_writev+0x31a/0x960 [ 285.908311][ T31] ? __pfx_vfs_writev+0x10/0x10 [ 285.913272][ T31] ? _raw_spin_lock_irq+0xae/0xf0 [ 285.918343][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 285.924144][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 285.929792][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 285.935048][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 285.940699][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 285.946381][ T31] do_writev+0x14d/0x2d0 [ 285.950645][ T31] ? __pfx_do_writev+0x10/0x10 [ 285.955448][ T31] ? rcu_is_watching+0x15/0xb0 [ 285.960241][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 285.965915][ T31] do_syscall_64+0xfa/0x3b0 [ 285.970447][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 285.975702][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 285.981784][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 285.987467][ T31] ? exc_page_fault+0x9f/0xf0 [ 285.992222][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 285.998131][ T31] RIP: 0033:0x7fcbfb80df39 [ 286.002591][ T31] RSP: 002b:00007ffd3addffb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 286.011037][ T31] RAX: ffffffffffffffda RBX: 0030656c69662f2e RCX: 00007fcbfb80df39 [ 286.019061][ T31] RDX: 0000000000000002 RSI: 0000200000000000 RDI: 0000000000000007 [ 286.027076][ T31] RBP: 00002000000002c0 R08: 0000000000000006 R09: 0000000000000006 [ 286.035093][ T31] R10: 0000000000000006 R11: 0000000000000246 R12: 0000200000000400 [ 286.043212][ T31] R13: 00007fcbfb85704e R14: 0000000000000001 R15: 0000000000000001 [ 286.051224][ T31] [ 286.054302][ T31] [ 286.054302][ T31] Showing all locks held in the system: [ 286.062025][ T31] 7 locks held by kworker/u8:1/13: [ 286.067180][ T31] #0: ffff8880b8639f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 [ 286.077215][ T31] #1: ffff8880b8623f08 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x314/0x6d0 [ 286.088672][ T31] #2: ffffffff99ceede0 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_deactivate+0x9a/0x250 [ 286.099230][ T31] #3: ffffffff99d1e2b8 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_activate+0xbb/0x420 [ 286.109575][ T31] #4: ffffffff8dfea608 (text_mutex){+.+.}-{4:4}, at: arch_jump_label_transform_apply+0x17/0x30 [ 286.120108][ T31] #5: ffffffff8e13ee20 (rcu_read_lock){....}-{1:3}, at: ___pte_offset_map+0x29/0x2c0 [ 286.129734][ T31] #6: ffff88801a46d078 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: __pte_offset_map_lock+0x13e/0x210 [ 286.140453][ T31] 1 lock held by khungtaskd/31: [ 286.145328][ T31] #0: ffffffff8e13ee20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 286.155299][ T31] 2 locks held by getty/5592: [ 286.159966][ T31] #0: ffff888030df70a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 286.169787][ T31] #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 286.179993][ T31] 2 locks held by syz-executor284/5838: [ 286.185633][ T31] #0: ffff88807990e428 (sb_writers#8){.+.+}-{0:0}, at: vfs_writev+0x288/0x960 [ 286.194712][ T31] #1: ffff888076d68148 (&sb->s_type->i_mutex_key#15){++++}-{4:4}, at: netfs_start_io_direct+0x1ef/0x230 [ 286.206070][ T31] [ 286.208405][ T31] ============================================= [ 286.208405][ T31] [ 286.216853][ T31] NMI backtrace for cpu 1 [ 286.216869][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc4-syzkaller-00013-g66701750d556 #0 PREEMPT(full) [ 286.216897][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 286.216912][ T31] Call Trace: [ 286.216921][ T31] [ 286.216931][ T31] dump_stack_lvl+0x189/0x250 [ 286.216980][ T31] ? __wake_up_klogd+0xd9/0x110 [ 286.217009][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 286.217042][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 286.217083][ T31] ? __pfx__printk+0x10/0x10 [ 286.217127][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 286.217161][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 286.217187][ T31] ? _printk+0xcf/0x120 [ 286.217220][ T31] ? __pfx__printk+0x10/0x10 [ 286.217251][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 286.217289][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 286.217324][ T31] watchdog+0xfee/0x1030 [ 286.217361][ T31] ? watchdog+0x1de/0x1030 [ 286.217405][ T31] kthread+0x711/0x8a0 [ 286.217438][ T31] ? __pfx_watchdog+0x10/0x10 [ 286.217471][ T31] ? __pfx_kthread+0x10/0x10 [ 286.217495][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 286.217529][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.217562][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 286.217591][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.217626][ T31] ? __pfx_kthread+0x10/0x10 [ 286.217656][ T31] ret_from_fork+0x3fc/0x770 [ 286.217695][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 286.217737][ T31] ? __switch_to_asm+0x39/0x70 [ 286.217762][ T31] ? __switch_to_asm+0x33/0x70 [ 286.217786][ T31] ? __pfx_kthread+0x10/0x10 [ 286.217815][ T31] ret_from_fork_asm+0x1a/0x30 [ 286.217858][ T31] [ 286.217868][ T31] Sending NMI from CPU 1 to CPUs 0: [ 286.391227][ C0] NMI backtrace for cpu 0 [ 286.391248][ C0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.16.0-rc4-syzkaller-00013-g66701750d556 #0 PREEMPT(full) [ 286.391274][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 286.391287][ C0] RIP: 0010:pv_native_safe_halt+0x13/0x20 [ 286.391325][ C0] Code: 6e 4c a9 f5 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 63 35 21 00 f3 0f 1e fa fb f4 43 4c a9 f5 cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 [ 286.391343][ C0] RSP: 0018:ffffffff8de07d80 EFLAGS: 00000282 [ 286.391362][ C0] RAX: 3a2dd383de135b00 RBX: ffffffff81974d88 RCX: 3a2dd383de135b00 [ 286.391379][ C0] RDX: 0000000000000001 RSI: ffffffff8d982066 RDI: ffffffff8be28cc0 [ 286.391395][ C0] RBP: ffffffff8de07ea8 R08: ffff8880b8632f5b R09: 1ffff110170c65eb [ 286.391411][ C0] R10: dffffc0000000000 R11: ffffed10170c65ec R12: ffffffff8fa104f0 [ 286.391428][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: 1ffffffff1bd2a50 [ 286.391444][ C0] FS: 0000000000000000(0000) GS:ffff888125c50000(0000) knlGS:0000000000000000 [ 286.391462][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 286.391477][ C0] CR2: 0000555867937168 CR3: 000000000df38000 CR4: 0000000000350ef0 [ 286.391493][ C0] Call Trace: [ 286.391502][ C0] [ 286.391510][ C0] default_idle+0x13/0x20 [ 286.391531][ C0] default_idle_call+0x74/0xb0 [ 286.391553][ C0] do_idle+0x1e8/0x510 [ 286.391576][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 286.391606][ C0] ? __pfx_do_idle+0x10/0x10 [ 286.391626][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 286.391653][ C0] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.391688][ C0] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 286.391720][ C0] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 286.391758][ C0] cpu_startup_entry+0x44/0x60 [ 286.391779][ C0] rest_init+0x2de/0x300 [ 286.391810][ C0] ? __pfx_x86_late_time_init+0x10/0x10 [ 286.391857][ C0] start_kernel+0x47d/0x500 [ 286.391883][ C0] x86_64_start_reservations+0x24/0x30 [ 286.391914][ C0] x86_64_start_kernel+0x143/0x1c0 [ 286.391944][ C0] common_startup_64+0x13e/0x147 [ 286.391983][ C0] [ 286.392267][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 286.392286][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc4-syzkaller-00013-g66701750d556 #0 PREEMPT(full) [ 286.392316][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 286.392332][ T31] Call Trace: [ 286.392343][ T31] [ 286.392354][ T31] dump_stack_lvl+0x99/0x250 [ 286.392399][ T31] ? __asan_memcpy+0x40/0x70 [ 286.392438][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 286.392481][ T31] ? __pfx__printk+0x10/0x10 [ 286.392520][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 286.392557][ T31] panic+0x2db/0x790 [ 286.392598][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 286.392635][ T31] ? __pfx_panic+0x10/0x10 [ 286.392674][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 286.392702][ T31] ? nmi_backtrace_stall_check+0x433/0x440 [ 286.392745][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 286.392773][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 286.392807][ T31] ? nmi_trigger_cpumask_backtrace+0x2b6/0x300 [ 286.392841][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 286.392874][ T31] watchdog+0x102d/0x1030 [ 286.392910][ T31] ? watchdog+0x1de/0x1030 [ 286.392961][ T31] kthread+0x711/0x8a0 [ 286.392993][ T31] ? __pfx_watchdog+0x10/0x10 [ 286.393025][ T31] ? __pfx_kthread+0x10/0x10 [ 286.393050][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 286.393083][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.393114][ T31] ? srso_alias_return_thunk+0x5/0xfbef5 [ 286.393142][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.393175][ T31] ? __pfx_kthread+0x10/0x10 [ 286.393205][ T31] ret_from_fork+0x3fc/0x770 [ 286.393243][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 286.393285][ T31] ? __switch_to_asm+0x39/0x70 [ 286.393310][ T31] ? __switch_to_asm+0x33/0x70 [ 286.393334][ T31] ? __pfx_kthread+0x10/0x10 [ 286.393363][ T31] ret_from_fork_asm+0x1a/0x30 [ 286.393407][ T31] [ 286.789286][ T31] Kernel Offset: disabled [ 286.793599][ T31] Rebooting in 86400 seconds..