./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2148803456 <...> [ 91.755483][ T892] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.1.94' (ED25519) to the list of known hosts. execve("./syz-executor2148803456", ["./syz-executor2148803456"], 0x7ffce4d0f960 /* 10 vars */) = 0 brk(NULL) = 0x55555e84b000 brk(0x55555e84bd40) = 0x55555e84bd40 arch_prctl(ARCH_SET_FS, 0x55555e84b3c0) = 0 set_tid_address(0x55555e84b690) = 5859 set_robust_list(0x55555e84b6a0, 24) = 0 rseq(0x55555e84bce0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2148803456", 4096) = 28 getrandom("\x18\xf4\xb1\x26\xa5\x6d\x29\x11", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555e84bd40 brk(0x55555e86cd40) = 0x55555e86cd40 brk(0x55555e86d000) = 0x55555e86d000 mprotect(0x7fe74d67c000, 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, child_tidptr=0x55555e84b690) = 5860 ./strace-static-x86_64: Process 5860 attached [pid 5860] set_robust_list(0x55555e84b6a0, 24) = 0 [pid 5860] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5860] setpgid(0, 0) = 0 [pid 5860] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5860] write(3, "1000", 4) = 4 [pid 5860] close(3) = 0 executing program [pid 5860] write(1, "executing program\n", 18) = 18 [pid 5860] futex(0x7fe74d68230c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5860] rt_sigaction(SIGRT_1, {sa_handler=0x7fe74d61e1e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fe74d60f860}, NULL, 8) = 0 [pid 5860] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5860] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fe74d591000 [pid 5860] mprotect(0x7fe74d592000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5860] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5860] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fe74d5b1990, parent_tid=0x7fe74d5b1990, exit_signal=0, stack=0x7fe74d591000, stack_size=0x20300, tls=0x7fe74d5b16c0}./strace-static-x86_64: Process 5861 attached => {parent_tid=[5861]}, 88) = 5861 [pid 5860] rt_sigprocmask(SIG_SETMASK, [], [pid 5861] rseq(0x7fe74d5b1fe0, 0x20, 0, 0x53053053 [pid 5860] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5861] <... rseq resumed>) = 0 [pid 5860] futex(0x7fe74d682308, FUTEX_WAKE_PRIVATE, 1000000 [pid 5861] set_robust_list(0x7fe74d5b19a0, 24 [pid 5860] <... futex resumed>) = 0 [pid 5861] <... set_robust_list resumed>) = 0 [pid 5860] futex(0x7fe74d68230c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5861] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5861] mremap(0x2000003c9000, 8192, 8192, MREMAP_MAYMOVE|MREMAP_FIXED|MREMAP_DONTUNMAP, 0x2000001de000 [pid 5860] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5860] futex(0x7fe74d68231c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5860] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5859] kill(-5860, SIGKILL) = 0 [pid 5860] <... mmap resumed>) = ? [pid 5859] kill(5860, SIGKILL) = 0 [pid 5859] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5859] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5859] getdents64(3, 0x55555e84c730 /* 2 entries */, 32768) = 48 [pid 5859] getdents64(3, 0x55555e84c730 /* 0 entries */, 32768) = 0 [pid 5859] close(3) = 0 [ 286.315062][ T31] INFO: task syz-executor214:5860 blocked for more than 143 seconds. [ 286.323237][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 286.331402][ T31] Blocked by coredump. [ 286.336270][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.345226][ T31] task:syz-executor214 state:D stack:26920 pid:5860 tgid:5860 ppid:5859 task_flags:0x40044c flags:0x00004006 [ 286.357604][ T31] Call Trace: [ 286.360904][ T31] [ 286.364227][ T31] __schedule+0x1737/0x4d30 [ 286.368817][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.374135][ T31] ? schedule+0x165/0x360 [ 286.378504][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.383738][ T31] ? __pfx___schedule+0x10/0x10 [ 286.388672][ T31] ? schedule+0x91/0x360 [ 286.392952][ T31] schedule+0x165/0x360 [ 286.397640][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.403133][ T31] rwsem_down_read_slowpath+0x5fd/0x8f0 [ 286.409361][ T31] ? rwsem_down_read_slowpath+0x4b8/0x8f0 [ 286.415611][ T31] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 286.421713][ T31] ? exit_mm+0xcc/0x2c0 [ 286.426237][ T31] ? __pfx_mm_release+0x10/0x10 [ 286.431112][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.436671][ T31] down_read+0x98/0x2e0 [ 286.440861][ T31] exit_mm+0xcc/0x2c0 [ 286.445245][ T31] ? __pfx_exit_mm+0x10/0x10 [ 286.449896][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.455099][ T31] do_exit+0x648/0x2300 [ 286.459323][ T31] ? do_raw_spin_lock+0x121/0x290 [ 286.465582][ T31] ? __pfx_do_exit+0x10/0x10 [ 286.470242][ T31] do_group_exit+0x21c/0x2d0 [ 286.475280][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.480526][ T31] get_signal+0x1286/0x1340 [ 286.485459][ T31] arch_do_signal_or_restart+0x9a/0x750 [ 286.491037][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.496630][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 286.501860][ T31] ? __pfx_arch_do_signal_or_restart+0x10/0x10 [ 286.508377][ T31] ? exit_to_user_mode_loop+0x40/0x110 [ 286.514146][ T31] exit_to_user_mode_loop+0x75/0x110 [ 286.519461][ T31] do_syscall_64+0x2bd/0x3b0 [ 286.524926][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.530184][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.536608][ T31] ? clear_bhb_loop+0x60/0xb0 [ 286.541326][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.547656][ T31] RIP: 0033:0x7fe74d5f82e3 [ 286.552104][ T31] RSP: 002b:00007ffe63911c98 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 [ 286.560935][ T31] RAX: fffffffffffffffc RBX: fffffffffffff000 RCX: 00007fe74d5f82e3 [ 286.569156][ T31] RDX: 0000000000000000 RSI: 0000000000021000 RDI: 0000000000000000 [ 286.577388][ T31] RBP: 0000000000000000 R08: 00000000ffffffff R09: 0000000000000000 [ 286.585576][ T31] R10: 0000000000020022 R11: 0000000000000246 R12: 00007ffe63911e60 [ 286.593842][ T31] R13: ffffffffffffffc0 R14: 0000000000001000 R15: 0000000000000000 [ 286.601857][ T31] [ 286.605318][ T31] [ 286.605318][ T31] Showing all locks held in the system: [ 286.613046][ T31] 1 lock held by khungtaskd/31: [ 286.618362][ T31] #0: ffffffff8e53d8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 286.628538][ T31] 2 locks held by getty/5610: [ 286.633243][ T31] #0: ffff88803021a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 286.645067][ T31] #1: ffffc900036cb2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 286.655475][ T31] 1 lock held by syz-executor214/5860: [ 286.660950][ T31] #0: ffff88802878e2a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 [ 286.670234][ T31] 1 lock held by syz-executor214/5861: [ 286.675931][ T31] [ 286.678369][ T31] ============================================= [ 286.678369][ T31] [ 286.687243][ T31] NMI backtrace for cpu 1 [ 286.687266][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 286.687287][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 286.687297][ T31] Call Trace: [ 286.687304][ T31] [ 286.687311][ T31] dump_stack_lvl+0x189/0x250 [ 286.687361][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 286.687389][ T31] ? __pfx__printk+0x10/0x10 [ 286.687429][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 286.687456][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 286.687482][ T31] ? __pfx__printk+0x10/0x10 [ 286.687513][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 286.687538][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 286.687564][ T31] watchdog+0xf93/0xfe0 [ 286.687590][ T31] ? watchdog+0x1de/0xfe0 [ 286.687615][ T31] kthread+0x70e/0x8a0 [ 286.687647][ T31] ? __pfx_watchdog+0x10/0x10 [ 286.687666][ T31] ? __pfx_kthread+0x10/0x10 [ 286.687696][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.687733][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.687775][ T31] ? __pfx_kthread+0x10/0x10 [ 286.687805][ T31] ret_from_fork+0x3f9/0x770 [ 286.687832][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 286.687863][ T31] ? __switch_to_asm+0x39/0x70 [ 286.687879][ T31] ? __switch_to_asm+0x33/0x70 [ 286.687895][ T31] ? __pfx_kthread+0x10/0x10 [ 286.687925][ T31] ret_from_fork_asm+0x1a/0x30 [ 286.687966][ T31] [ 286.687973][ T31] Sending NMI from CPU 1 to CPUs 0: [ 286.835359][ C0] NMI backtrace for cpu 0 [ 286.835374][ C0] CPU: 0 UID: 0 PID: 5861 Comm: syz-executor214 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 286.835391][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 286.835400][ C0] RIP: 0010:lock_is_held_type+0x6d/0x190 [ 286.835426][ C0] Code: 2c 25 08 50 e7 92 41 83 bd ec 0a 00 00 00 0f 85 d8 00 00 00 89 f5 49 89 fe 48 c7 04 24 00 00 00 00 9c 8f 04 24 4c 8b 24 24 fa <48> c7 c7 e5 dd c7 8d e8 17 17 00 00 65 ff 05 80 17 68 07 41 83 bd [ 286.835438][ C0] RSP: 0018:ffffc90004147238 EFLAGS: 00000046 [ 286.835451][ C0] RAX: 0000000000000000 RBX: 00000000ffffffff RCX: ffff888033d95a00 [ 286.835461][ C0] RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffff88802878e2a0 [ 286.835470][ C0] RBP: 00000000ffffffff R08: 0000000000000003 R09: 0000000000000004 [ 286.835478][ C0] R10: dffffc0000000000 R11: fffffbfff34924ec R12: 0000000000000246 [ 286.835488][ C0] R13: ffff888033d95a00 R14: ffff88802878e2a0 R15: ffff88802878e2a0 [ 286.835499][ C0] FS: 00007fe74d5b16c0(0000) GS:ffff8881257ab000(0000) knlGS:0000000000000000 [ 286.835511][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 286.835520][ C0] CR2: 00005610c92ac168 CR3: 000000007acd4000 CR4: 00000000003526f0 [ 286.835532][ C0] Call Trace: [ 286.835538][ C0] [ 286.835546][ C0] mt_validate+0x74f/0x4380 [ 286.835575][ C0] ? __pfx_mt_validate+0x10/0x10 [ 286.835609][ C0] validate_mm+0xb6/0x4b0 [ 286.835632][ C0] ? __pfx_validate_mm+0x10/0x10 [ 286.835659][ C0] vma_link+0x366/0x450 [ 286.835681][ C0] ? __pfx_vma_link+0x10/0x10 [ 286.835722][ C0] ? anon_vma_clone+0x49b/0x4f0 [ 286.835738][ C0] ? anon_vma_name+0x87/0xf0 [ 286.835754][ C0] ? vm_area_dup+0x4f5/0x680 [ 286.835774][ C0] copy_vma+0x70c/0x940 [ 286.835798][ C0] ? __pfx_copy_vma+0x10/0x10 [ 286.835822][ C0] ? __pfx_move_page_tables+0x10/0x10 [ 286.835841][ C0] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.835872][ C0] move_vma+0x81f/0x1840 [ 286.835897][ C0] ? __lock_acquire+0xab9/0xd20 [ 286.835921][ C0] ? arch_get_unmapped_area_topdown+0x251/0xbc0 [ 286.835941][ C0] ? __pfx_move_vma+0x10/0x10 [ 286.835965][ C0] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 286.835989][ C0] ? cap_mmap_addr+0xb0/0x100 [ 286.836007][ C0] ? bpf_lsm_mmap_addr+0x9/0x20 [ 286.836021][ C0] ? security_mmap_addr+0x71/0x270 [ 286.836042][ C0] mremap_to+0x6d6/0x7a0 [ 286.836066][ C0] ? __pfx_mremap_to+0x10/0x10 [ 286.836089][ C0] ? check_prep_vma+0x740/0xae0 [ 286.836114][ C0] __se_sys_mremap+0xa0b/0xef0 [ 286.836143][ C0] ? __pfx___se_sys_mremap+0x10/0x10 [ 286.836166][ C0] ? __pfx_ptrace_notify+0x10/0x10 [ 286.836189][ C0] ? __x64_sys_mremap+0x20/0xc0 [ 286.836210][ C0] do_syscall_64+0xfa/0x3b0 [ 286.836232][ C0] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.836245][ C0] ? __switch_to_asm+0x39/0x70 [ 286.836258][ C0] ? clear_bhb_loop+0x60/0xb0 [ 286.836274][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.836287][ C0] RIP: 0033:0x7fe74d5f82a9 [ 286.836299][ 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 [ 286.836310][ C0] RSP: 002b:00007fe74d5b1238 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 [ 286.836324][ C0] RAX: ffffffffffffffda RBX: 00007fe74d682308 RCX: 00007fe74d5f82a9 [ 286.836334][ C0] RDX: 0000000000002000 RSI: 0000000000002000 RDI: 00002000003c9000 [ 286.836343][ C0] RBP: 00007fe74d682300 R08: 00002000001de000 R09: 00007fe74d5b16c0 [ 286.836353][ C0] R10: 0000000000000007 R11: 0000000000000246 R12: 00002000003c9000 [ 286.836362][ C0] R13: 0000000000000000 R14: 00007ffe63911c10 R15: 00007ffe63911cf8 [ 286.836378][ C0] [ 286.836385][ C0] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.026 msecs [ 286.837405][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 287.217489][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.228779][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.238848][ T31] Call Trace: [ 287.242140][ T31] [ 287.245087][ T31] dump_stack_lvl+0x99/0x250 [ 287.249693][ T31] ? __asan_memcpy+0x40/0x70 [ 287.254293][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.259504][ T31] ? __pfx__printk+0x10/0x10 [ 287.264118][ T31] vpanic+0x281/0x750 [ 287.268111][ T31] ? __pfx_vpanic+0x10/0x10 [ 287.272625][ T31] ? __x2apic_send_IPI_mask+0x1e4/0x260 [ 287.278202][ T31] ? preempt_schedule+0xae/0xc0 [ 287.283146][ T31] ? preempt_schedule_common+0x83/0xd0 [ 287.288621][ T31] panic+0xb9/0xc0 [ 287.292354][ T31] ? __pfx_panic+0x10/0x10 [ 287.296770][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 287.302144][ T31] ? nmi_trigger_cpumask_backtrace+0x2bb/0x300 [ 287.308306][ T31] watchdog+0xfd2/0xfe0 [ 287.312474][ T31] ? watchdog+0x1de/0xfe0 [ 287.316807][ T31] kthread+0x70e/0x8a0 [ 287.320904][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.325580][ T31] ? __pfx_kthread+0x10/0x10 [ 287.330183][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.335476][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.340680][ T31] ? __pfx_kthread+0x10/0x10 [ 287.345296][ T31] ret_from_fork+0x3f9/0x770 [ 287.349893][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.355037][ T31] ? __switch_to_asm+0x39/0x70 [ 287.359816][ T31] ? __switch_to_asm+0x33/0x70 [ 287.364581][ T31] ? __pfx_kthread+0x10/0x10 [ 287.369185][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.373962][ T31] [ 287.377313][ T31] Kernel Offset: disabled [ 287.381642][ T31] Rebooting in 86400 seconds..