./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2286207076 <...> Warning: Permanently added '10.128.1.210' (ED25519) to the list of known hosts. execve("./syz-executor2286207076", ["./syz-executor2286207076"], 0x7fff23fbf670 /* 10 vars */) = 0 brk(NULL) = 0x555563f92000 brk(0x555563f92d40) = 0x555563f92d40 arch_prctl(ARCH_SET_FS, 0x555563f923c0) = 0 set_tid_address(0x555563f92690) = 5848 set_robust_list(0x555563f926a0, 24) = 0 rseq(0x555563f92ce0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2286207076", 4096) = 28 getrandom("\xba\x4c\x9a\x83\x0e\xea\xb8\xa0", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555563f92d40 brk(0x555563fb3d40) = 0x555563fb3d40 brk(0x555563fb4000) = 0x555563fb4000 mprotect(0x7fc69c481000, 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 5851 attached , child_tidptr=0x555563f92690) = 5851 [pid 5851] set_robust_list(0x555563f926a0, 24) = 0 [pid 5851] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5851] setpgid(0, 0) = 0 [pid 5851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5851] write(3, "1000", 4) = 4 [pid 5851] close(3) = 0 executing program [pid 5851] write(1, "executing program\n", 18) = 18 [pid 5851] futex(0x7fc69c48730c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5851] rt_sigaction(SIGRT_1, {sa_handler=0x7fc69c423220, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fc69c4148a0}, NULL, 8) = 0 [pid 5851] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5851] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fc69c396000 [pid 5851] mprotect(0x7fc69c397000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5851] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5851] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fc69c3b6990, parent_tid=0x7fc69c3b6990, exit_signal=0, stack=0x7fc69c396000, stack_size=0x20300, tls=0x7fc69c3b66c0}./strace-static-x86_64: Process 5852 attached => {parent_tid=[5852]}, 88) = 5852 [pid 5852] rseq(0x7fc69c3b6fe0, 0x20, 0, 0x53053053) = 0 [pid 5852] set_robust_list(0x7fc69c3b69a0, 24) = 0 [pid 5852] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5851] rt_sigprocmask(SIG_SETMASK, [], [pid 5852] futex(0x7fc69c487308, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5851] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5851] futex(0x7fc69c487308, FUTEX_WAKE_PRIVATE, 1000000 [pid 5852] <... futex resumed>) = 0 [pid 5851] <... futex resumed>) = 1 [pid 5852] mmap(0x200000000000, 16506880, PROT_SEM, MAP_SHARED|MAP_FIXED|MAP_ANONYMOUS, -1, 0xeb0b4000) = 0x200000000000 [pid 5851] futex(0x7fc69c48730c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5852] futex(0x7fc69c48730c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5851] <... futex resumed>) = 0 [pid 5852] futex(0x7fc69c487308, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5851] futex(0x7fc69c487308, FUTEX_WAKE_PRIVATE, 1000000 [pid 5852] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5851] <... futex resumed>) = 0 [pid 5852] mremap(0x2000003c9000, 8192, 8192, MREMAP_MAYMOVE|MREMAP_FIXED|MREMAP_DONTUNMAP, 0x2000001de000 [pid 5851] futex(0x7fc69c48730c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5852] <... mremap resumed>) = -1 EINVAL (Invalid argument) [pid 5852] futex(0x7fc69c48730c, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5852] futex(0x7fc69c487308, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5851] <... futex resumed>) = 0 [pid 5851] futex(0x7fc69c487308, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5851] futex(0x7fc69c48730c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5852] <... futex resumed>) = 0 [pid 5852] mremap(0x2000003c9000, 8192, 8192, MREMAP_MAYMOVE|MREMAP_FIXED|MREMAP_DONTUNMAP, 0x2000001de000 [pid 5851] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5851] exit_group(0) = ? [ 91.914071][ T983] cfg80211: failed to load regulatory.db [pid 5848] kill(-5851, SIGKILL) = 0 [pid 5848] kill(5851, SIGKILL) = 0 [pid 5848] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5848] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5848] getdents64(3, 0x555563f93730 /* 2 entries */, 32768) = 48 [pid 5848] getdents64(3, 0x555563f93730 /* 0 entries */, 32768) = 0 [pid 5848] close(3) = 0 [ 286.475595][ T31] INFO: task syz-executor228:5851 blocked for more than 143 seconds. [ 286.483910][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 286.491052][ T31] Blocked by coredump. [ 286.496279][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.505323][ T31] task:syz-executor228 state:D stack:26920 pid:5851 tgid:5851 ppid:5848 task_flags:0x40004c flags:0x00004002 [ 286.517705][ T31] Call Trace: [ 286.521017][ T31] [ 286.524617][ T31] __schedule+0x1737/0x4d30 [ 286.529215][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.535227][ T31] ? schedule+0x165/0x360 [ 286.539603][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.544936][ T31] ? __pfx___schedule+0x10/0x10 [ 286.549859][ T31] ? schedule+0x91/0x360 [ 286.554649][ T31] schedule+0x165/0x360 [ 286.558860][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.564793][ T31] rwsem_down_read_slowpath+0x5fd/0x8f0 [ 286.570384][ T31] ? rwsem_down_read_slowpath+0x4b8/0x8f0 [ 286.576639][ T31] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 286.583029][ T31] ? exit_mm+0xcc/0x2c0 [ 286.587236][ T31] ? __pfx_mm_release+0x10/0x10 [ 286.593043][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.598314][ T31] down_read+0x98/0x2e0 [ 286.602929][ T31] exit_mm+0xcc/0x2c0 [ 286.606959][ T31] ? __pfx_exit_mm+0x10/0x10 [ 286.611591][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.617014][ T31] do_exit+0x648/0x2300 [ 286.621244][ T31] ? __pfx_do_exit+0x10/0x10 [ 286.626165][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.631406][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.637243][ T31] do_group_exit+0x21c/0x2d0 [ 286.642421][ T31] __x64_sys_exit_group+0x3f/0x40 [ 286.647481][ T31] x64_sys_call+0x21f7/0x2200 [ 286.652962][ T31] do_syscall_64+0xfa/0x3b0 [ 286.657519][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.663132][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.669228][ T31] ? clear_bhb_loop+0x60/0xb0 [ 286.674370][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.680310][ T31] RIP: 0033:0x7fc69c3fb349 [ 286.685206][ T31] RSP: 002b:00007ffd86561478 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 286.694010][ T31] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc69c3fb349 [ 286.702341][ T31] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 286.710360][ T31] RBP: 00007fc69c4872b0 R08: ffffffffffffffb0 R09: 7fffffffffffffff [ 286.718979][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc69c4872b0 [ 286.727375][ T31] R13: 0000000000000000 R14: 00007fc69c487e40 R15: 00007fc69c3c9160 [ 286.735749][ T31] [ 286.738851][ T31] [ 286.738851][ T31] Showing all locks held in the system: [ 286.747101][ T31] 1 lock held by khungtaskd/31: [ 286.752260][ T31] #0: ffffffff8e53d8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 286.762963][ T31] 2 locks held by getty/5606: [ 286.767667][ T31] #0: ffff88802fea50a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 286.777902][ T31] #1: ffffc900036c32f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 286.788370][ T31] 1 lock held by syz-executor228/5851: [ 286.794136][ T31] #0: ffff8880321c62a0 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 [ 286.803281][ T31] 1 lock held by syz-executor228/5852: [ 286.808812][ T31] [ 286.811149][ T31] ============================================= [ 286.811149][ T31] [ 286.820183][ T31] NMI backtrace for cpu 0 [ 286.820207][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 286.820230][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 286.820242][ T31] Call Trace: [ 286.820250][ T31] [ 286.820258][ T31] dump_stack_lvl+0x189/0x250 [ 286.820331][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 286.820360][ T31] ? __pfx__printk+0x10/0x10 [ 286.820401][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 286.820428][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 286.820455][ T31] ? __pfx__printk+0x10/0x10 [ 286.820486][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 286.820512][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 286.820538][ T31] watchdog+0xf93/0xfe0 [ 286.820565][ T31] ? watchdog+0x1de/0xfe0 [ 286.820592][ T31] kthread+0x70e/0x8a0 [ 286.820623][ T31] ? __pfx_watchdog+0x10/0x10 [ 286.820643][ T31] ? __pfx_kthread+0x10/0x10 [ 286.820672][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.820697][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.820722][ T31] ? __pfx_kthread+0x10/0x10 [ 286.820751][ T31] ret_from_fork+0x3f9/0x770 [ 286.820777][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 286.820807][ T31] ? __switch_to_asm+0x39/0x70 [ 286.820823][ T31] ? __switch_to_asm+0x33/0x70 [ 286.820838][ T31] ? __pfx_kthread+0x10/0x10 [ 286.820867][ T31] ret_from_fork_asm+0x1a/0x30 [ 286.820900][ T31] [ 286.820907][ T31] Sending NMI from CPU 0 to CPUs 1: [ 286.968826][ C1] NMI backtrace for cpu 1 [ 286.968929][ C1] CPU: 1 UID: 0 PID: 5852 Comm: syz-executor228 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 286.968950][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 286.968960][ C1] RIP: 0010:mt_validate+0xc63/0x4380 [ 286.968991][ C1] Code: 4d 39 f5 0f 82 e8 01 00 00 e8 d9 d6 47 f6 4c 8b b4 24 38 01 00 00 4c 89 ef 4c 89 f6 e8 26 d9 47 f6 4d 39 f5 0f 87 43 02 00 00 b8 d6 47 f6 4c 3b ac 24 38 01 00 00 0f 84 2d 04 00 00 e8 a5 d6 [ 286.969005][ C1] RSP: 0018:ffffc90003f57280 EFLAGS: 00000287 [ 286.969020][ C1] RAX: ffffffff8b782a4a RBX: 0000000000000007 RCX: ffff888026ef3c00 [ 286.969031][ C1] RDX: 0000000000000000 RSI: 00001fd82bf2bfff RDI: 00001fd829597fff [ 286.969042][ C1] RBP: ffffc90003f57450 R08: ffff888026ef3c00 R09: 0000000000000004 [ 286.969053][ C1] R10: 0000000000000003 R11: 0000000000000000 R12: ffff88807127a440 [ 286.969064][ C1] R13: 00001fd829597fff R14: 00001fd82bf2bfff R15: 0000000000000001 [ 286.969074][ C1] FS: 00007fc69c3b66c0(0000) GS:ffff8881258ab000(0000) knlGS:0000000000000000 [ 286.969088][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 286.969099][ C1] CR2: 000055b64fe4b168 CR3: 0000000075362000 CR4: 00000000003526f0 [ 286.969113][ C1] Call Trace: [ 286.969119][ C1] [ 286.969133][ C1] ? __pfx_mt_validate+0x10/0x10 [ 286.969156][ C1] ? __kasan_slab_alloc+0x6c/0x80 [ 286.969175][ C1] ? kmem_cache_alloc_bulk_noprof+0x4fd/0x790 [ 286.969208][ C1] validate_mm+0xb6/0x4b0 [ 286.969233][ C1] ? __pfx_validate_mm+0x10/0x10 [ 286.969261][ C1] ? up_write+0x1c4/0x420 [ 286.969283][ C1] ? __pfx_vma_interval_tree_augment_rotate+0x10/0x10 [ 286.969310][ C1] vma_link+0x366/0x450 [ 286.969335][ C1] ? __pfx_vma_link+0x10/0x10 [ 286.969362][ C1] ? anon_vma_clone+0x49b/0x4f0 [ 286.969380][ C1] ? anon_vma_name+0x87/0xf0 [ 286.969401][ C1] copy_vma+0x70c/0x940 [ 286.969429][ C1] ? __pfx_copy_vma+0x10/0x10 [ 286.969455][ C1] ? __pfx_move_page_tables+0x10/0x10 [ 286.969478][ C1] ? irqentry_exit+0x74/0x90 [ 286.969513][ C1] move_vma+0x81f/0x1840 [ 286.969539][ C1] ? arch_get_unmapped_area_topdown+0x251/0xbc0 [ 286.969572][ C1] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 286.969594][ C1] ? __pfx_move_vma+0x10/0x10 [ 286.969620][ C1] ? mm_get_unmapped_area+0xa7/0xd0 [ 286.969642][ C1] ? cap_mmap_addr+0xb0/0x100 [ 286.969663][ C1] ? bpf_lsm_mmap_addr+0x9/0x20 [ 286.969678][ C1] ? security_mmap_addr+0x71/0x270 [ 286.969702][ C1] mremap_to+0x6d6/0x7a0 [ 286.969729][ C1] ? __pfx_mremap_to+0x10/0x10 [ 286.969754][ C1] ? check_prep_vma+0x740/0xae0 [ 286.969782][ C1] __se_sys_mremap+0xa0b/0xef0 [ 286.969816][ C1] ? __pfx___se_sys_mremap+0x10/0x10 [ 286.969842][ C1] ? __pfx_ptrace_notify+0x10/0x10 [ 286.969869][ C1] ? __x64_sys_mremap+0x20/0xc0 [ 286.969893][ C1] do_syscall_64+0xfa/0x3b0 [ 286.969917][ C1] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.969933][ C1] ? __switch_to_asm+0x39/0x70 [ 286.969947][ C1] ? clear_bhb_loop+0x60/0xb0 [ 286.969965][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.969980][ C1] RIP: 0033:0x7fc69c3fd2e9 [ 286.969995][ 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 [ 286.970007][ C1] RSP: 002b:00007fc69c3b6228 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 [ 286.970022][ C1] RAX: ffffffffffffffda RBX: 00007fc69c487308 RCX: 00007fc69c3fd2e9 [ 286.970034][ C1] RDX: 0000000000002000 RSI: 0000000000002000 RDI: 00002000003c9000 [ 286.970044][ C1] RBP: 00007fc69c487300 R08: 00002000001de000 R09: 00007fc69c3b66c0 [ 286.970056][ C1] R10: 0000000000000007 R11: 0000000000000246 R12: 00007fc69c48730c [ 286.970066][ C1] R13: 00002000003c9000 R14: 0000200000000000 R15: 00007ffd865613f8 [ 286.970085][ C1] [ 286.970093][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.268 msecs [ 287.357442][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 287.364321][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.375644][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 287.385724][ T31] Call Trace: [ 287.389018][ T31] [ 287.391984][ T31] dump_stack_lvl+0x99/0x250 [ 287.396612][ T31] ? __asan_memcpy+0x40/0x70 [ 287.401232][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.406462][ T31] ? __pfx__printk+0x10/0x10 [ 287.411108][ T31] vpanic+0x281/0x750 [ 287.415119][ T31] ? __pfx_vpanic+0x10/0x10 [ 287.419642][ T31] ? preempt_schedule+0xae/0xc0 [ 287.424519][ T31] ? preempt_schedule_common+0x83/0xd0 [ 287.429996][ T31] panic+0xb9/0xc0 [ 287.433734][ T31] ? __pfx_panic+0x10/0x10 [ 287.438172][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 287.443579][ T31] ? nmi_trigger_cpumask_backtrace+0x2bb/0x300 [ 287.449788][ T31] watchdog+0xfd2/0xfe0 [ 287.453965][ T31] ? watchdog+0x1de/0xfe0 [ 287.458315][ T31] kthread+0x70e/0x8a0 [ 287.462412][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.467120][ T31] ? __pfx_kthread+0x10/0x10 [ 287.471736][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.476966][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.482195][ T31] ? __pfx_kthread+0x10/0x10 [ 287.486815][ T31] ret_from_fork+0x3f9/0x770 [ 287.491431][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.496573][ T31] ? __switch_to_asm+0x39/0x70 [ 287.501350][ T31] ? __switch_to_asm+0x33/0x70 [ 287.506128][ T31] ? __pfx_kthread+0x10/0x10 [ 287.510746][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.515545][ T31] [ 287.518923][ T31] Kernel Offset: disabled [ 287.523257][ T31] Rebooting in 86400 seconds..