./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor298779239 <...> Warning: Permanently added '10.128.0.90' (ED25519) to the list of known hosts. execve("./syz-executor298779239", ["./syz-executor298779239"], 0x7ffec42feba0 /* 10 vars */) = 0 brk(NULL) = 0x5555879e9000 brk(0x5555879e9d40) = 0x5555879e9d40 arch_prctl(ARCH_SET_FS, 0x5555879e93c0) = 0 set_tid_address(0x5555879e9690) = 5872 set_robust_list(0x5555879e96a0, 24) = 0 rseq(0x5555879e9ce0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor298779239", 4096) = 27 getrandom("\x5d\xdb\x89\x60\x98\x4e\xab\xbe", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555879e9d40 brk(0x555587a0ad40) = 0x555587a0ad40 brk(0x555587a0b000) = 0x555587a0b000 mprotect(0x7f463554f000, 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 5873 attached [pid 5873] set_robust_list(0x5555879e96a0, 24 [pid 5872] <... clone resumed>, child_tidptr=0x5555879e9690) = 5873 [pid 5873] <... set_robust_list resumed>) = 0 [pid 5873] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5873] setpgid(0, 0) = 0 [pid 5873] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5873] write(3, "1000", 4) = 4 [pid 5873] close(3) = 0 [pid 5873] write(1, "executing program\n", 18executing program ) = 18 [pid 5873] futex(0x7f463555530c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5873] rt_sigaction(SIGRT_1, {sa_handler=0x7f46354f1260, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f46354e28e0}, NULL, 8) = 0 [pid 5873] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5873] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f4635464000 [pid 5873] mprotect(0x7f4635465000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5873] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5873] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f4635484990, parent_tid=0x7f4635484990, exit_signal=0, stack=0x7f4635464000, stack_size=0x20300, tls=0x7f46354846c0}./strace-static-x86_64: Process 5874 attached => {parent_tid=[5874]}, 88) = 5874 [pid 5874] rseq(0x7f4635484fe0, 0x20, 0, 0x53053053 [pid 5873] rt_sigprocmask(SIG_SETMASK, [], [pid 5874] <... rseq resumed>) = 0 [pid 5873] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5874] set_robust_list(0x7f46354849a0, 24 [pid 5873] futex(0x7f4635555308, FUTEX_WAKE_PRIVATE, 1000000 [pid 5874] <... set_robust_list resumed>) = 0 [pid 5874] rt_sigprocmask(SIG_SETMASK, [], [pid 5873] <... futex resumed>) = 0 [pid 5874] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5873] futex(0x7f463555530c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5874] clone(child_stack=NULL, flags=CLONE_PIDFD|CLONE_THREAD|CLONE_CHILD_CLEARTID|CLONE_NEWCGROUP, parent_tid=NULL, child_tidptr=NULL) = -1 EINVAL (Invalid argument) [pid 5874] futex(0x7f463555530c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5874] futex(0x7f4635555308, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5873] <... futex resumed>) = 0 [pid 5873] futex(0x7f4635555308, FUTEX_WAKE_PRIVATE, 1000000 [pid 5874] <... futex resumed>) = 0 [pid 5873] <... futex resumed>) = 1 [pid 5874] mremap(0x200000000000, 6291458, 6291458, MREMAP_MAYMOVE|MREMAP_FIXED|MREMAP_DONTUNMAP, 0x200000a00000 [pid 5873] futex(0x7f463555530c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5873] exit_group(0) = ? [pid 5872] kill(-5873, SIGKILL) = 0 [pid 5872] kill(5873, SIGKILL) = 0 [pid 5872] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5872] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5872] getdents64(3, 0x5555879ea730 /* 2 entries */, 32768) = 48 [pid 5872] getdents64(3, 0x5555879ea730 /* 0 entries */, 32768) = 0 [pid 5872] close(3) = 0 [ 429.884865][ T31] INFO: task syz-executor298:5873 blocked for more than 143 seconds. [ 429.893035][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 429.901139][ T31] Blocked by coredump. [ 429.910479][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 429.919561][ T31] task:syz-executor298 state:D stack:26920 pid:5873 tgid:5873 ppid:5872 task_flags:0x40004c flags:0x00004002 [ 429.931942][ T31] Call Trace: [ 429.935641][ T31] [ 429.938613][ T31] __schedule+0x1737/0x4d30 [ 429.943208][ T31] ? __lock_acquire+0xab9/0xd20 [ 429.948556][ T31] ? schedule+0x165/0x360 [ 429.952935][ T31] ? __lock_acquire+0xab9/0xd20 [ 429.958362][ T31] ? __pfx___schedule+0x10/0x10 [ 429.963274][ T31] ? schedule+0x91/0x360 [ 429.968041][ T31] schedule+0x165/0x360 [ 429.972254][ T31] schedule_preempt_disabled+0x13/0x30 [ 429.978218][ T31] rwsem_down_read_slowpath+0x5fd/0x8f0 [ 429.983797][ T31] ? rwsem_down_read_slowpath+0x4b8/0x8f0 [ 429.989948][ T31] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 429.996405][ T31] ? exit_mm+0xcc/0x2c0 [ 430.000615][ T31] ? __pfx_mm_release+0x10/0x10 [ 430.005921][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.011172][ T31] down_read+0x98/0x2e0 [ 430.015836][ T31] exit_mm+0xcc/0x2c0 [ 430.019869][ T31] ? __pfx_exit_mm+0x10/0x10 [ 430.024499][ T31] ? rcu_is_watching+0x15/0xb0 [ 430.029844][ T31] do_exit+0x648/0x2300 [ 430.034066][ T31] ? __pfx_do_exit+0x10/0x10 [ 430.039169][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 430.044417][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.050064][ T31] do_group_exit+0x21c/0x2d0 [ 430.055046][ T31] __x64_sys_exit_group+0x3f/0x40 [ 430.060143][ T31] x64_sys_call+0x21f7/0x2200 [ 430.065271][ T31] do_syscall_64+0xfa/0x3b0 [ 430.069820][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.075535][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.081639][ T31] ? clear_bhb_loop+0x60/0xb0 [ 430.086776][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.092711][ T31] RIP: 0033:0x7f46354c9389 [ 430.097671][ T31] RSP: 002b:00007ffd7521a648 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 430.106401][ T31] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f46354c9389 [ 430.114408][ T31] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 430.122862][ T31] RBP: 00007f46355552b0 R08: ffffffffffffffb0 R09: 7fffffffffffffff [ 430.131223][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f46355552b0 [ 430.139588][ T31] R13: 0000000000000000 R14: 00007f4635555e40 R15: 00007f46354971a0 [ 430.147916][ T31] [ 430.151047][ T31] [ 430.151047][ T31] Showing all locks held in the system: [ 430.159334][ T31] 2 locks held by ksoftirqd/0/15: [ 430.164395][ T31] #0: ffff8880b8639f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 [ 430.175204][ T31] #1: ffff8880b8624008 (per_cpu_ptr(&psi_seq, cpu)){-.-.}-{0:0}, at: psi_task_switch+0x53/0x880 [ 430.186111][ T31] 1 lock held by khungtaskd/31: [ 430.190990][ T31] #0: ffffffff8e53d8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 430.201370][ T31] 2 locks held by getty/5609: [ 430.206344][ T31] #0: ffff88814d1fd0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 430.216480][ T31] #1: ffffc900036c32f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 430.227182][ T31] 1 lock held by syz-executor298/5873: [ 430.232680][ T31] #0: ffff8880217fd7e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 [ 430.242723][ T31] 2 locks held by syz-executor298/5874: [ 430.248672][ T31] [ 430.251030][ T31] ============================================= [ 430.251030][ T31] [ 430.262333][ T31] NMI backtrace for cpu 1 [ 430.262371][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 430.262395][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 430.262406][ T31] Call Trace: [ 430.262414][ T31] [ 430.262422][ T31] dump_stack_lvl+0x189/0x250 [ 430.262464][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.262509][ T31] ? __pfx__printk+0x10/0x10 [ 430.262552][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 430.262581][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 430.262608][ T31] ? __pfx__printk+0x10/0x10 [ 430.262642][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 430.262668][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 430.262696][ T31] watchdog+0xf93/0xfe0 [ 430.262724][ T31] ? watchdog+0x1de/0xfe0 [ 430.262751][ T31] kthread+0x70e/0x8a0 [ 430.262784][ T31] ? __pfx_watchdog+0x10/0x10 [ 430.262804][ T31] ? __pfx_kthread+0x10/0x10 [ 430.262836][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 430.262862][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.262889][ T31] ? __pfx_kthread+0x10/0x10 [ 430.262919][ T31] ret_from_fork+0x3f9/0x770 [ 430.262947][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 430.262979][ T31] ? __switch_to_asm+0x39/0x70 [ 430.262996][ T31] ? __switch_to_asm+0x33/0x70 [ 430.263012][ T31] ? __pfx_kthread+0x10/0x10 [ 430.263043][ T31] ret_from_fork_asm+0x1a/0x30 [ 430.263078][ T31] [ 430.263085][ T31] Sending NMI from CPU 1 to CPUs 0: [ 430.410905][ C0] NMI backtrace for cpu 0 [ 430.410922][ C0] CPU: 0 UID: 0 PID: 5874 Comm: syz-executor298 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 430.410942][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 430.410952][ C0] RIP: 0010:lock_acquire+0x94/0x360 [ 430.410976][ C0] Code: 0f 84 d7 01 00 00 83 3d 19 4d 46 0e 00 0f 84 f0 00 00 00 48 8b b4 24 90 00 00 00 4c 89 ef e8 83 73 85 00 83 3d fc 4c 46 0e 00 <0f> 84 fa 00 00 00 65 8b 05 af dc 49 11 85 c0 0f 85 eb 00 00 00 65 [ 430.410991][ C0] RSP: 0018:ffffc90004217138 EFLAGS: 00000202 [ 430.411006][ C0] RAX: 0000000000000001 RBX: 0000000000000000 RCX: cdfdc9e4b60aee00 [ 430.411017][ C0] RDX: 0000000000000000 RSI: ffffffff817301b2 RDI: 1ffffffff1ca7b14 [ 430.411029][ C0] RBP: ffffffff81730195 R08: 0000000000000000 R09: 0000000000000000 [ 430.411039][ C0] R10: ffffc900042172f8 R11: ffffffff81ac9660 R12: 0000000000000002 [ 430.411051][ C0] R13: ffffffff8e53d8a0 R14: 0000000000000000 R15: 0000000000000000 [ 430.411062][ C0] FS: 00007f46354846c0(0000) GS:ffff8881257ab000(0000) knlGS:0000000000000000 [ 430.411076][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 430.411087][ C0] CR2: 00007fffed0fff19 CR3: 0000000075b22000 CR4: 00000000003526f0 [ 430.411102][ C0] Call Trace: [ 430.411108][ C0] [ 430.411117][ C0] ? unwind_next_frame+0xa5/0x2390 [ 430.411140][ C0] ? unwind_next_frame+0x19ae/0x2390 [ 430.411163][ C0] ? stack_trace_save+0x9c/0xe0 [ 430.411194][ C0] ? unwind_next_frame+0xa5/0x2390 [ 430.411215][ C0] unwind_next_frame+0xc2/0x2390 [ 430.411237][ C0] ? unwind_next_frame+0xa5/0x2390 [ 430.411257][ C0] ? arch_stack_walk+0xe4/0x150 [ 430.411285][ C0] ? __unwind_start+0x5b9/0x760 [ 430.411310][ C0] ? __pfx_stack_trace_consume_entry+0x10/0x10 [ 430.411347][ C0] arch_stack_walk+0x11c/0x150 [ 430.411372][ C0] ? stack_trace_save+0x9c/0xe0 [ 430.411398][ C0] stack_trace_save+0x9c/0xe0 [ 430.411421][ C0] ? __pfx_stack_trace_save+0x10/0x10 [ 430.411448][ C0] ? unlink_anon_vmas+0x650/0x670 [ 430.411469][ C0] kasan_save_track+0x3e/0x80 [ 430.411512][ C0] __kasan_kmalloc+0x93/0xb0 [ 430.411529][ C0] __kmalloc_cache_noprof+0x230/0x3d0 [ 430.411547][ C0] ? kmem_cache_free+0x166/0x400 [ 430.411566][ C0] ? vms_complete_munmap_vmas+0x626/0x8a0 [ 430.411590][ C0] kmem_cache_free+0x166/0x400 [ 430.411610][ C0] vms_complete_munmap_vmas+0x626/0x8a0 [ 430.411641][ C0] do_vmi_align_munmap+0x358/0x420 [ 430.411673][ C0] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 430.411712][ C0] do_vmi_munmap+0x253/0x2e0 [ 430.411737][ C0] do_munmap+0xe1/0x140 [ 430.411756][ C0] ? __pfx_do_munmap+0x10/0x10 [ 430.411776][ C0] ? bpf_lsm_mmap_addr+0x9/0x20 [ 430.411792][ C0] ? security_mmap_addr+0x71/0x270 [ 430.411816][ C0] mremap_to+0x2df/0x7a0 [ 430.411843][ C0] ? __pfx_mremap_to+0x10/0x10 [ 430.411868][ C0] ? check_prep_vma+0x740/0xae0 [ 430.411897][ C0] __se_sys_mremap+0xa0b/0xef0 [ 430.411930][ C0] ? __pfx___se_sys_mremap+0x10/0x10 [ 430.411956][ C0] ? __pfx_ptrace_notify+0x10/0x10 [ 430.411983][ C0] ? __x64_sys_mremap+0x20/0xc0 [ 430.412007][ C0] do_syscall_64+0xfa/0x3b0 [ 430.412031][ C0] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.412053][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.412069][ C0] ? clear_bhb_loop+0x60/0xb0 [ 430.412087][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.412102][ C0] RIP: 0033:0x7f46354cb329 [ 430.412116][ C0] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 [ 430.412129][ C0] RSP: 002b:00007f4635484228 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 [ 430.412144][ C0] RAX: ffffffffffffffda RBX: 00007f4635555308 RCX: 00007f46354cb329 [ 430.412156][ C0] RDX: 0000000000600002 RSI: 0000000000600002 RDI: 0000200000000000 [ 430.412166][ C0] RBP: 00007f4635555300 R08: 0000200000a00000 R09: 00007f46354846c0 [ 430.412185][ C0] R10: 0000000000000007 R11: 0000000000000246 R12: 00007f463555530c [ 430.412195][ C0] R13: 0000200000000000 R14: 0000200000000140 R15: 00007ffd7521a5c8 [ 430.412216][ C0] [ 430.412223][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.319 msecs [ 430.826892][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 430.833775][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 430.845082][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 430.855164][ T31] Call Trace: [ 430.858469][ T31] [ 430.861450][ T31] dump_stack_lvl+0x99/0x250 [ 430.866096][ T31] ? __asan_memcpy+0x40/0x70 [ 430.870736][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.875978][ T31] ? __pfx__printk+0x10/0x10 [ 430.880625][ T31] vpanic+0x281/0x750 [ 430.884639][ T31] ? __pfx_vpanic+0x10/0x10 [ 430.889175][ T31] ? preempt_schedule+0xae/0xc0 [ 430.894067][ T31] ? preempt_schedule_common+0x83/0xd0 [ 430.899567][ T31] panic+0xb9/0xc0 [ 430.903324][ T31] ? __pfx_panic+0x10/0x10 [ 430.907774][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 430.913212][ T31] ? nmi_trigger_cpumask_backtrace+0x2bb/0x300 [ 430.919398][ T31] watchdog+0xfd2/0xfe0 [ 430.923587][ T31] ? watchdog+0x1de/0xfe0 [ 430.927950][ T31] kthread+0x70e/0x8a0 [ 430.932069][ T31] ? __pfx_watchdog+0x10/0x10 [ 430.936772][ T31] ? __pfx_kthread+0x10/0x10 [ 430.941398][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 430.946625][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.951854][ T31] ? __pfx_kthread+0x10/0x10 [ 430.956480][ T31] ret_from_fork+0x3f9/0x770 [ 430.961104][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 430.966358][ T31] ? __switch_to_asm+0x39/0x70 [ 430.971156][ T31] ? __switch_to_asm+0x33/0x70 [ 430.975944][ T31] ? __pfx_kthread+0x10/0x10 [ 430.980568][ T31] ret_from_fork_asm+0x1a/0x30 [ 430.985382][ T31] [ 430.988698][ T31] Kernel Offset: disabled [ 430.993043][ T31] Rebooting in 86400 seconds..