./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3883412549 <...> Warning: Permanently added '10.128.1.113' (ED25519) to the list of known hosts. execve("./syz-executor3883412549", ["./syz-executor3883412549"], 0x7fff86e05b70 /* 10 vars */) = 0 brk(NULL) = 0x55559164c000 brk(0x55559164cd40) = 0x55559164cd40 arch_prctl(ARCH_SET_FS, 0x55559164c3c0) = 0 set_tid_address(0x55559164c690) = 5854 set_robust_list(0x55559164c6a0, 24) = 0 rseq(0x55559164cce0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3883412549", 4096) = 28 getrandom("\x27\x07\x48\x49\x3a\x58\x9b\xd7", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55559164cd40 brk(0x55559166dd40) = 0x55559166dd40 brk(0x55559166e000) = 0x55559166e000 mprotect(0x7fb3b6b97000, 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 5855 attached , child_tidptr=0x55559164c690) = 5855 [pid 5855] set_robust_list(0x55559164c6a0, 24) = 0 [pid 5855] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5855] setpgid(0, 0) = 0 [pid 5855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5855] write(3, "1000", 4) = 4 [pid 5855] close(3) = 0 [pid 5855] write(1, "executing program\n", 18executing program ) = 18 [pid 5855] futex(0x7fb3b6b9d30c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5855] rt_sigaction(SIGRT_1, {sa_handler=0x7fb3b6b39220, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fb3b6b2a8a0}, NULL, 8) = 0 [pid 5855] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5855] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fb3b6aac000 [pid 5855] mprotect(0x7fb3b6aad000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5855] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5855] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fb3b6acc990, parent_tid=0x7fb3b6acc990, exit_signal=0, stack=0x7fb3b6aac000, stack_size=0x20300, tls=0x7fb3b6acc6c0}./strace-static-x86_64: Process 5857 attached [pid 5857] rseq(0x7fb3b6accfe0, 0x20, 0, 0x53053053) = 0 [pid 5855] <... clone3 resumed> => {parent_tid=[5857]}, 88) = 5857 [pid 5857] set_robust_list(0x7fb3b6acc9a0, 24 [pid 5855] rt_sigprocmask(SIG_SETMASK, [], [pid 5857] <... set_robust_list resumed>) = 0 [pid 5855] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5857] rt_sigprocmask(SIG_SETMASK, [], [pid 5855] futex(0x7fb3b6b9d308, FUTEX_WAKE_PRIVATE, 1000000 [pid 5857] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5855] <... futex resumed>) = 0 [pid 5857] ioctl(-1, UFFDIO_API, {api=0xaa, features=0 [pid 5855] futex(0x7fb3b6b9d30c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5857] <... ioctl resumed>}) = -1 EBADF (Bad file descriptor) [pid 5857] futex(0x7fb3b6b9d30c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5857] futex(0x7fb3b6b9d308, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5855] <... futex resumed>) = 0 [pid 5855] futex(0x7fb3b6b9d308, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5857] <... futex resumed>) = 0 [pid 5855] futex(0x7fb3b6b9d30c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5857] mremap(0x200000000000, 6291458, 6291458, MREMAP_MAYMOVE|MREMAP_FIXED|MREMAP_DONTUNMAP, 0x200000a00000 [pid 5855] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5855] exit_group(0) = ? [ 91.921316][ T24] cfg80211: failed to load regulatory.db [pid 5854] kill(-5855, SIGKILL) = 0 [pid 5854] kill(5855, SIGKILL) = 0 [pid 5854] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5854] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5854] getdents64(3, 0x55559164d730 /* 2 entries */, 32768) = 48 [pid 5854] getdents64(3, 0x55559164d730 /* 0 entries */, 32768) = 0 [pid 5854] close(3) = 0 [ 286.481105][ T31] INFO: task syz-executor388:5855 blocked for more than 143 seconds. [ 286.489787][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 286.496925][ T31] Blocked by coredump. [ 286.501897][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.510802][ T31] task:syz-executor388 state:D stack:26920 pid:5855 tgid:5855 ppid:5854 task_flags:0x40004c flags:0x00004002 [ 286.523161][ T31] Call Trace: [ 286.526474][ T31] [ 286.529652][ T31] __schedule+0x1737/0x4d30 [ 286.534233][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.539125][ T31] ? schedule+0x165/0x360 [ 286.544252][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.549143][ T31] ? __pfx___schedule+0x10/0x10 [ 286.554286][ T31] ? schedule+0x91/0x360 [ 286.558572][ T31] schedule+0x165/0x360 [ 286.563034][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.568541][ T31] rwsem_down_read_slowpath+0x5fd/0x8f0 [ 286.574363][ T31] ? rwsem_down_read_slowpath+0x4b8/0x8f0 [ 286.580372][ T31] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 286.586480][ T31] ? exit_mm+0xcc/0x2c0 [ 286.590908][ T31] ? __pfx_mm_release+0x10/0x10 [ 286.595802][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.601779][ T31] down_read+0x98/0x2e0 [ 286.605976][ T31] exit_mm+0xcc/0x2c0 [ 286.610220][ T31] ? __pfx_exit_mm+0x10/0x10 [ 286.614852][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.619897][ T31] do_exit+0x648/0x2300 [ 286.624106][ T31] ? __pfx_do_exit+0x10/0x10 [ 286.628738][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.634250][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.639721][ T31] do_group_exit+0x21c/0x2d0 [ 286.644344][ T31] __x64_sys_exit_group+0x3f/0x40 [ 286.649642][ T31] x64_sys_call+0x21f7/0x2200 [ 286.654358][ T31] do_syscall_64+0xfa/0x3b0 [ 286.658898][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.664519][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.670805][ T31] ? clear_bhb_loop+0x60/0xb0 [ 286.675520][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.681719][ T31] RIP: 0033:0x7fb3b6b11349 [ 286.686185][ T31] RSP: 002b:00007fff256aa7f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 286.694864][ T31] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb3b6b11349 [ 286.703099][ T31] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 286.711725][ T31] RBP: 00007fb3b6b9d2b0 R08: ffffffffffffffb0 R09: 7fffffffffffffff [ 286.720165][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb3b6b9d2b0 [ 286.728255][ T31] R13: 0000000000000000 R14: 00007fb3b6b9de40 R15: 00007fb3b6adf170 [ 286.736493][ T31] [ 286.739800][ T31] [ 286.739800][ T31] Showing all locks held in the system: [ 286.747529][ T31] 1 lock held by khungtaskd/31: [ 286.752948][ T31] #0: ffffffff8e53d8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 286.763101][ T31] 2 locks held by getty/5612: [ 286.767972][ T31] #0: ffff88814df930a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 286.778079][ T31] #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 286.788492][ T31] 1 lock held by syz-executor388/5855: [ 286.794162][ T31] #0: ffff8880782a01e0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 [ 286.803241][ T31] 1 lock held by syz-executor388/5857: [ 286.808781][ T31] [ 286.811379][ T31] ============================================= [ 286.811379][ T31] [ 286.820572][ T31] NMI backtrace for cpu 1 [ 286.820596][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 286.820630][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 286.820641][ T31] Call Trace: [ 286.820649][ T31] [ 286.820657][ T31] dump_stack_lvl+0x189/0x250 [ 286.820691][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 286.820719][ T31] ? __pfx__printk+0x10/0x10 [ 286.820759][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 286.820786][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 286.820813][ T31] ? __pfx__printk+0x10/0x10 [ 286.820845][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 286.820871][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 286.820897][ T31] watchdog+0xf93/0xfe0 [ 286.820922][ T31] ? watchdog+0x1de/0xfe0 [ 286.820946][ T31] kthread+0x70e/0x8a0 [ 286.820977][ T31] ? __pfx_watchdog+0x10/0x10 [ 286.820997][ T31] ? __pfx_kthread+0x10/0x10 [ 286.821027][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.821053][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.821078][ T31] ? __pfx_kthread+0x10/0x10 [ 286.821125][ T31] ret_from_fork+0x3f9/0x770 [ 286.821152][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 286.821181][ T31] ? __switch_to_asm+0x39/0x70 [ 286.821197][ T31] ? __switch_to_asm+0x33/0x70 [ 286.821220][ T31] ? __pfx_kthread+0x10/0x10 [ 286.821250][ T31] ret_from_fork_asm+0x1a/0x30 [ 286.821285][ T31] [ 286.821292][ T31] Sending NMI from CPU 1 to CPUs 0: [ 286.968972][ C0] NMI backtrace for cpu 0 [ 286.968988][ C0] CPU: 0 UID: 0 PID: 5857 Comm: syz-executor388 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 286.969007][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 286.969017][ C0] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 [ 286.969038][ C0] Code: 89 fb e8 23 00 00 00 48 8b 3d e4 43 29 0c 48 89 de 5b e9 b3 84 58 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 08 50 e7 92 65 8b 15 08 4f [ 286.969051][ C0] RSP: 0018:ffffc90004257478 EFLAGS: 00000202 [ 286.969066][ C0] RAX: ffffffff8b775785 RBX: 0000000000000001 RCX: 0000000000000000 [ 286.969076][ C0] RDX: ffff8880314a5a00 RSI: 0000000000000001 RDI: 0000000000000000 [ 286.969086][ C0] RBP: 0000000000000001 R08: ffff8880314a5a00 R09: 0000000000000004 [ 286.969096][ C0] R10: 0000000000000003 R11: 0000000000000000 R12: dffffc0000000000 [ 286.969106][ C0] R13: ffff88802e517000 R14: ffff88807c98fc80 R15: ffffffffffffffff [ 286.969118][ C0] FS: 00007fb3b6acc6c0(0000) GS:ffff8881257ab000(0000) knlGS:0000000000000000 [ 286.969132][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 286.969143][ C0] CR2: 0000558ce6125168 CR3: 00000000739b4000 CR4: 00000000003526f0 [ 286.969157][ C0] Call Trace: [ 286.969163][ C0] [ 286.969169][ C0] mas_next_slot+0x98e/0xcf0 [ 286.969203][ C0] mas_find+0xb0e/0xd30 [ 286.969234][ C0] validate_mm+0xe1/0x4b0 [ 286.969263][ C0] ? __pfx_validate_mm+0x10/0x10 [ 286.969291][ C0] ? mas_find+0xb40/0xd30 [ 286.969315][ C0] vms_complete_munmap_vmas+0x6aa/0x8a0 [ 286.969346][ C0] do_vmi_align_munmap+0x358/0x420 [ 286.969379][ C0] ? __pfx_do_vmi_align_munmap+0x10/0x10 [ 286.969418][ C0] do_vmi_munmap+0x253/0x2e0 [ 286.969444][ C0] do_munmap+0xe1/0x140 [ 286.969462][ C0] ? __pfx_do_munmap+0x10/0x10 [ 286.969483][ C0] ? bpf_lsm_mmap_addr+0x9/0x20 [ 286.969498][ C0] ? security_mmap_addr+0x71/0x270 [ 286.969524][ C0] mremap_to+0x2df/0x7a0 [ 286.969551][ C0] ? __pfx_mremap_to+0x10/0x10 [ 286.969576][ C0] ? check_prep_vma+0x740/0xae0 [ 286.969604][ C0] __se_sys_mremap+0xa0b/0xef0 [ 286.969638][ C0] ? __pfx___se_sys_mremap+0x10/0x10 [ 286.969664][ C0] ? __pfx_ptrace_notify+0x10/0x10 [ 286.969691][ C0] ? __x64_sys_mremap+0x20/0xc0 [ 286.969714][ C0] do_syscall_64+0xfa/0x3b0 [ 286.969738][ C0] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.969760][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.969776][ C0] ? clear_bhb_loop+0x60/0xb0 [ 286.969794][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.969809][ C0] RIP: 0033:0x7fb3b6b132e9 [ 286.969824][ 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 [ 286.969837][ C0] RSP: 002b:00007fb3b6acc228 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 [ 286.969852][ C0] RAX: ffffffffffffffda RBX: 00007fb3b6b9d308 RCX: 00007fb3b6b132e9 [ 286.969864][ C0] RDX: 0000000000600002 RSI: 0000000000600002 RDI: 0000200000000000 [ 286.969874][ C0] RBP: 00007fb3b6b9d300 R08: 0000200000a00000 R09: 00007fb3b6acc6c0 [ 286.969885][ C0] R10: 0000000000000007 R11: 0000000000000246 R12: 00007fb3b6b9d30c [ 286.969895][ C0] R13: 0000200000000000 R14: 00002000000000c0 R15: 00007fff256aa778 [ 286.969915][ C0] [ 287.295761][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 287.302643][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.314037][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.324116][ T31] Call Trace: [ 287.327433][ T31] [ 287.330385][ T31] dump_stack_lvl+0x99/0x250 [ 287.335013][ T31] ? __asan_memcpy+0x40/0x70 [ 287.339642][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.344934][ T31] ? __pfx__printk+0x10/0x10 [ 287.349765][ T31] vpanic+0x281/0x750 [ 287.353791][ T31] ? __pfx_vpanic+0x10/0x10 [ 287.358413][ T31] ? preempt_schedule+0xae/0xc0 [ 287.363298][ T31] ? preempt_schedule_common+0x83/0xd0 [ 287.368788][ T31] panic+0xb9/0xc0 [ 287.372533][ T31] ? __pfx_panic+0x10/0x10 [ 287.376976][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 287.382378][ T31] ? nmi_trigger_cpumask_backtrace+0x2bb/0x300 [ 287.388647][ T31] watchdog+0xfd2/0xfe0 [ 287.392831][ T31] ? watchdog+0x1de/0xfe0 [ 287.397199][ T31] kthread+0x70e/0x8a0 [ 287.401302][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.406007][ T31] ? __pfx_kthread+0x10/0x10 [ 287.410643][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.415877][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.421102][ T31] ? __pfx_kthread+0x10/0x10 [ 287.425823][ T31] ret_from_fork+0x3f9/0x770 [ 287.430452][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.435632][ T31] ? __switch_to_asm+0x39/0x70 [ 287.440677][ T31] ? __switch_to_asm+0x33/0x70 [ 287.445461][ T31] ? __pfx_kthread+0x10/0x10 [ 287.450192][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.454999][ T31] [ 287.458452][ T31] Kernel Offset: disabled [ 287.462787][ T31] Rebooting in 86400 seconds..