./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3133527328 <...> Warning: Permanently added '10.128.0.141' (ED25519) to the list of known hosts. execve("./syz-executor3133527328", ["./syz-executor3133527328"], 0x7ffd69b5ffb0 /* 10 vars */) = 0 brk(NULL) = 0x55557f55e000 brk(0x55557f55ed40) = 0x55557f55ed40 arch_prctl(ARCH_SET_FS, 0x55557f55e3c0) = 0 set_tid_address(0x55557f55e690) = 5851 set_robust_list(0x55557f55e6a0, 24) = 0 rseq(0x55557f55ece0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3133527328", 4096) = 28 getrandom("\xdf\xad\x44\x99\xa9\x72\xae\xd9", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557f55ed40 brk(0x55557f57fd40) = 0x55557f57fd40 brk(0x55557f580000) = 0x55557f580000 mprotect(0x7f46b83d2000, 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 5852 attached , child_tidptr=0x55557f55e690) = 5852 [pid 5852] set_robust_list(0x55557f55e6a0, 24) = 0 [pid 5852] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5852] setpgid(0, 0) = 0 [pid 5852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5852] write(3, "1000", 4) = 4 [pid 5852] close(3) = 0 [pid 5852] write(1, "executing program\n", 18executing program ) = 18 [pid 5852] futex(0x7f46b83d830c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5852] rt_sigaction(SIGRT_1, {sa_handler=0x7f46b83741e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f46b8365860}, NULL, 8) = 0 [pid 5852] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5852] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f46b82e7000 [pid 5852] mprotect(0x7f46b82e8000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5852] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5852] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f46b8307990, parent_tid=0x7f46b8307990, exit_signal=0, stack=0x7f46b82e7000, stack_size=0x20300, tls=0x7f46b83076c0}./strace-static-x86_64: Process 5853 attached [pid 5853] rseq(0x7f46b8307fe0, 0x20, 0, 0x53053053) = 0 [pid 5853] set_robust_list(0x7f46b83079a0, 24) = 0 [pid 5852] <... clone3 resumed> => {parent_tid=[5853]}, 88) = 5853 [pid 5853] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5852] rt_sigprocmask(SIG_SETMASK, [], [pid 5853] futex(0x7f46b83d8308, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5852] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5852] futex(0x7f46b83d8308, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5853] <... futex resumed>) = 0 [pid 5852] futex(0x7f46b83d830c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5853] mremap(0x2000003c9000, 8192, 8192, MREMAP_MAYMOVE|MREMAP_FIXED|MREMAP_DONTUNMAP, 0x2000001de000 [pid 5852] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5852] futex(0x7f46b83d831c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 92.018335][ T43] cfg80211: failed to load regulatory.db [pid 5852] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5851] kill(-5852, SIGKILL) = 0 [pid 5852] <... mmap resumed>) = ? [pid 5851] kill(5852, SIGKILL) = 0 [pid 5851] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5851] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5851] getdents64(3, 0x55557f55f730 /* 2 entries */, 32768) = 48 [pid 5851] getdents64(3, 0x55557f55f730 /* 0 entries */, 32768) = 0 [pid 5851] close(3) = 0 [ 286.579057][ T31] INFO: task syz-executor313:5852 blocked for more than 143 seconds. [ 286.587378][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 286.594611][ T31] Blocked by coredump. [ 286.600116][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.609289][ T31] task:syz-executor313 state:D stack:26408 pid:5852 tgid:5852 ppid:5851 task_flags:0x40044c flags:0x00004006 [ 286.621606][ T31] Call Trace: [ 286.624920][ T31] [ 286.628314][ T31] __schedule+0x1737/0x4d30 [ 286.633004][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.638427][ T31] ? schedule+0x165/0x360 [ 286.642822][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.648225][ T31] ? __pfx___schedule+0x10/0x10 [ 286.653316][ T31] ? schedule+0x91/0x360 [ 286.658212][ T31] schedule+0x165/0x360 [ 286.662447][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.668954][ T31] rwsem_down_read_slowpath+0x5fd/0x8f0 [ 286.674548][ T31] ? rwsem_down_read_slowpath+0x4b8/0x8f0 [ 286.680735][ T31] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 286.687204][ T31] ? exit_mm+0xcc/0x2c0 [ 286.691417][ T31] ? __pfx_mm_release+0x10/0x10 [ 286.696755][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.702007][ T31] down_read+0x98/0x2e0 [ 286.706683][ T31] exit_mm+0xcc/0x2c0 [ 286.710802][ T31] ? __pfx_exit_mm+0x10/0x10 [ 286.715439][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.720841][ T31] do_exit+0x648/0x2300 [ 286.725147][ T31] ? do_raw_spin_lock+0x121/0x290 [ 286.730721][ T31] ? __pfx_do_exit+0x10/0x10 [ 286.735380][ T31] do_group_exit+0x21c/0x2d0 [ 286.740435][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.745734][ T31] get_signal+0x1286/0x1340 [ 286.750887][ T31] arch_do_signal_or_restart+0x9a/0x750 [ 286.756788][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.762039][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 286.767810][ T31] ? __pfx_arch_do_signal_or_restart+0x10/0x10 [ 286.774033][ T31] ? exit_to_user_mode_loop+0x40/0x110 [ 286.780507][ T31] exit_to_user_mode_loop+0x75/0x110 [ 286.785843][ T31] do_syscall_64+0x2bd/0x3b0 [ 286.790976][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.796498][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.802605][ T31] ? clear_bhb_loop+0x60/0xb0 [ 286.807935][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.813875][ T31] RIP: 0033:0x7f46b834e2e3 [ 286.818784][ T31] RSP: 002b:00007ffd8291c788 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 286.827596][ T31] RAX: fffffffffffffffc RBX: fffffffffffff000 RCX: 00007f46b834e2e3 [ 286.835613][ T31] RDX: 0000000000000000 RSI: 0000000000021000 RDI: 0000000000000000 [ 286.844180][ T31] RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000 [ 286.852600][ T31] R10: 0000000000020022 R11: 0000000000000246 R12: 00007ffd8291c950 [ 286.860905][ T31] R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000 [ 286.869291][ T31] [ 286.872413][ T31] [ 286.872413][ T31] Showing all locks held in the system: [ 286.880605][ T31] 1 lock held by khungtaskd/31: [ 286.885577][ T31] #0: ffffffff8e53d8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 286.896203][ T31] 2 locks held by kworker/u8:5/1092: [ 286.901541][ T31] 2 locks held by getty/5608: [ 286.906792][ T31] #0: ffff88814de580a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 286.917036][ T31] #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 286.927518][ T31] 1 lock held by syz-executor313/5852: [ 286.933008][ T31] #0: ffff88807bae2220 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 [ 286.942235][ T31] 1 lock held by syz-executor313/5853: [ 286.948151][ T31] [ 286.950503][ T31] ============================================= [ 286.950503][ T31] [ 286.959301][ T31] NMI backtrace for cpu 0 [ 286.959328][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 286.959351][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 286.959363][ T31] Call Trace: [ 286.959371][ T31] [ 286.959380][ T31] dump_stack_lvl+0x189/0x250 [ 286.959417][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 286.959446][ T31] ? __pfx__printk+0x10/0x10 [ 286.959488][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 286.959517][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 286.959545][ T31] ? __pfx__printk+0x10/0x10 [ 286.959578][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 286.959603][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 286.959632][ T31] watchdog+0xf93/0xfe0 [ 286.959660][ T31] ? watchdog+0x1de/0xfe0 [ 286.959687][ T31] kthread+0x70e/0x8a0 [ 286.959720][ T31] ? __pfx_watchdog+0x10/0x10 [ 286.959740][ T31] ? __pfx_kthread+0x10/0x10 [ 286.959770][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.959797][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.959823][ T31] ? __pfx_kthread+0x10/0x10 [ 286.959862][ T31] ret_from_fork+0x3f9/0x770 [ 286.959890][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 286.959921][ T31] ? __switch_to_asm+0x39/0x70 [ 286.959938][ T31] ? __switch_to_asm+0x33/0x70 [ 286.959954][ T31] ? __pfx_kthread+0x10/0x10 [ 286.959983][ T31] ret_from_fork_asm+0x1a/0x30 [ 286.960018][ T31] [ 286.960026][ T31] Sending NMI from CPU 0 to CPUs 1: [ 287.107703][ C1] NMI backtrace for cpu 1 [ 287.107720][ C1] CPU: 1 UID: 0 PID: 5853 Comm: syz-executor313 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.107741][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.107751][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 [ 287.107773][ C1] 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 [ 287.107787][ C1] RSP: 0018:ffffc90003df7278 EFLAGS: 00000246 [ 287.107803][ C1] RAX: ffffffff8b782901 RBX: 0000000000000007 RCX: ffff8880330a8000 [ 287.107815][ C1] RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000000 [ 287.107824][ C1] RBP: ffffc90003df7450 R08: ffff8880330a8000 R09: 0000000000000004 [ 287.107836][ C1] R10: 0000000000000003 R11: 0000000000000000 R12: ffff888076ba8440 [ 287.107847][ C1] R13: 00001fd24cd51fff R14: 00001fd24cd4ffff R15: ffff888076ba8401 [ 287.107859][ C1] FS: 00007f46b83076c0(0000) GS:ffff8881258ab000(0000) knlGS:0000000000000000 [ 287.107873][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.107885][ C1] CR2: 00005627ff940330 CR3: 0000000071538000 CR4: 00000000003526f0 [ 287.107900][ C1] Call Trace: [ 287.107907][ C1] [ 287.107913][ C1] mt_validate+0xc09/0x4380 [ 287.107947][ C1] ? __pfx_mt_validate+0x10/0x10 [ 287.107988][ C1] validate_mm+0xb6/0x4b0 [ 287.108015][ C1] ? __pfx_validate_mm+0x10/0x10 [ 287.108048][ C1] vma_link+0x366/0x450 [ 287.108073][ C1] ? __pfx_vma_link+0x10/0x10 [ 287.108101][ C1] ? anon_vma_clone+0x49b/0x4f0 [ 287.108120][ C1] ? anon_vma_name+0x87/0xf0 [ 287.108138][ C1] ? vm_area_dup+0x4f5/0x680 [ 287.108161][ C1] copy_vma+0x70c/0x940 [ 287.108189][ C1] ? __pfx_copy_vma+0x10/0x10 [ 287.108217][ C1] ? __pfx_move_page_tables+0x10/0x10 [ 287.108240][ C1] ? irqentry_exit+0x74/0x90 [ 287.108277][ C1] move_vma+0x81f/0x1840 [ 287.108299][ C1] ? __lock_acquire+0xab9/0xd20 [ 287.108328][ C1] ? arch_get_unmapped_area_topdown+0x251/0xbc0 [ 287.108352][ C1] ? __pfx_move_vma+0x10/0x10 [ 287.108378][ C1] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 287.108407][ C1] ? cap_mmap_addr+0xb0/0x100 [ 287.108428][ C1] ? bpf_lsm_mmap_addr+0x9/0x20 [ 287.108443][ C1] ? security_mmap_addr+0x71/0x270 [ 287.108468][ C1] mremap_to+0x6d6/0x7a0 [ 287.108496][ C1] ? __pfx_mremap_to+0x10/0x10 [ 287.108522][ C1] ? check_prep_vma+0x740/0xae0 [ 287.108551][ C1] __se_sys_mremap+0xa0b/0xef0 [ 287.108600][ C1] ? __pfx___se_sys_mremap+0x10/0x10 [ 287.108628][ C1] ? __pfx_ptrace_notify+0x10/0x10 [ 287.108656][ C1] ? __x64_sys_mremap+0x20/0xc0 [ 287.108681][ C1] do_syscall_64+0xfa/0x3b0 [ 287.108706][ C1] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.108722][ C1] ? __switch_to_asm+0x39/0x70 [ 287.108737][ C1] ? clear_bhb_loop+0x60/0xb0 [ 287.108756][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 287.108772][ C1] RIP: 0033:0x7f46b834e2a9 [ 287.108786][ C1] 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 [ 287.108800][ C1] RSP: 002b:00007f46b8307238 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 [ 287.108816][ C1] RAX: ffffffffffffffda RBX: 00007f46b83d8308 RCX: 00007f46b834e2a9 [ 287.108828][ C1] RDX: 0000000000002000 RSI: 0000000000002000 RDI: 00002000003c9000 [ 287.108839][ C1] RBP: 00007f46b83d8300 R08: 00002000001de000 R09: 00007f46b83076c0 [ 287.108851][ C1] R10: 0000000000000007 R11: 0000000000000246 R12: 00002000003c9000 [ 287.108862][ C1] R13: 0000000000000000 R14: 00007ffd8291c700 R15: 00007ffd8291c7e8 [ 287.108882][ C1] [ 287.108889][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.187 msecs [ 287.109781][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 287.490278][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.501657][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.511723][ T31] Call Trace: [ 287.515010][ T31] [ 287.517977][ T31] dump_stack_lvl+0x99/0x250 [ 287.522597][ T31] ? __asan_memcpy+0x40/0x70 [ 287.527294][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.532508][ T31] ? __pfx__printk+0x10/0x10 [ 287.537119][ T31] vpanic+0x281/0x750 [ 287.541113][ T31] ? __pfx_vpanic+0x10/0x10 [ 287.545625][ T31] ? __x2apic_send_IPI_mask+0x1e4/0x260 [ 287.551202][ T31] ? preempt_schedule+0xae/0xc0 [ 287.556089][ T31] ? preempt_schedule_common+0x83/0xd0 [ 287.561596][ T31] panic+0xb9/0xc0 [ 287.565331][ T31] ? __pfx_panic+0x10/0x10 [ 287.569768][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 287.575155][ T31] ? nmi_trigger_cpumask_backtrace+0x2bb/0x300 [ 287.581324][ T31] watchdog+0xfd2/0xfe0 [ 287.585596][ T31] ? watchdog+0x1de/0xfe0 [ 287.589941][ T31] kthread+0x70e/0x8a0 [ 287.594029][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.598727][ T31] ? __pfx_kthread+0x10/0x10 [ 287.603377][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.608697][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.613913][ T31] ? __pfx_kthread+0x10/0x10 [ 287.618515][ T31] ret_from_fork+0x3f9/0x770 [ 287.623126][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.628251][ T31] ? __switch_to_asm+0x39/0x70 [ 287.633017][ T31] ? __switch_to_asm+0x33/0x70 [ 287.637782][ T31] ? __pfx_kthread+0x10/0x10 [ 287.642404][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.647215][ T31] [ 287.650679][ T31] Kernel Offset: disabled [ 287.655018][ T31] Rebooting in 86400 seconds..