./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2805699908 <...> Warning: Permanently added '10.128.0.97' (ED25519) to the list of known hosts. execve("./syz-executor2805699908", ["./syz-executor2805699908"], 0x7fffac39d4a0 /* 10 vars */) = 0 brk(NULL) = 0x555585a5b000 brk(0x555585a5bd40) = 0x555585a5bd40 arch_prctl(ARCH_SET_FS, 0x555585a5b3c0) = 0 set_tid_address(0x555585a5b690) = 5872 set_robust_list(0x555585a5b6a0, 24) = 0 rseq(0x555585a5bce0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2805699908", 4096) = 28 getrandom("\x2a\x1d\x1b\xb8\x5b\xb5\x1f\x94", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555585a5bd40 brk(0x555585a7cd40) = 0x555585a7cd40 brk(0x555585a7d000) = 0x555585a7d000 mprotect(0x7eff94b2e000, 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 , child_tidptr=0x555585a5b690) = 5873 [pid 5873] set_robust_list(0x555585a5b6a0, 24) = 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(0x7eff94b3430c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5873] rt_sigaction(SIGRT_1, {sa_handler=0x7eff94ad01e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7eff94ac1860}, 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) = 0x7eff94a43000 [pid 5873] mprotect(0x7eff94a44000, 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=0x7eff94a63990, parent_tid=0x7eff94a63990, exit_signal=0, stack=0x7eff94a43000, stack_size=0x20300, tls=0x7eff94a636c0}./strace-static-x86_64: Process 5874 attached [pid 5874] rseq(0x7eff94a63fe0, 0x20, 0, 0x53053053) = 0 [pid 5874] set_robust_list(0x7eff94a639a0, 24 [pid 5873] <... clone3 resumed> => {parent_tid=[5874]}, 88) = 5874 [pid 5874] <... set_robust_list resumed>) = 0 [pid 5873] rt_sigprocmask(SIG_SETMASK, [], [pid 5874] rt_sigprocmask(SIG_SETMASK, [], [pid 5873] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5874] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5873] futex(0x7eff94b34308, FUTEX_WAKE_PRIVATE, 1000000 [pid 5874] mremap(0x200000000000, 4096, 4096, MREMAP_MAYMOVE|MREMAP_FIXED|MREMAP_DONTUNMAP, 0x200000481000 [pid 5873] <... futex resumed>) = 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, 0x555585a5c730 /* 2 entries */, 32768) = 48 [pid 5872] getdents64(3, 0x555585a5c730 /* 0 entries */, 32768) = 0 [pid 5872] close(3) = 0 [ 429.704752][ T31] INFO: task syz-executor280:5873 blocked for more than 143 seconds. [ 429.712970][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 429.720667][ T31] Blocked by coredump. [ 429.727080][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 429.736452][ T31] task:syz-executor280 state:D stack:26920 pid:5873 tgid:5873 ppid:5872 task_flags:0x40044c flags:0x00004006 [ 429.748624][ T31] Call Trace: [ 429.751909][ T31] [ 429.755129][ T31] __schedule+0x1737/0x4d30 [ 429.759686][ T31] ? __lock_acquire+0xab9/0xd20 [ 429.764797][ T31] ? schedule+0x165/0x360 [ 429.769148][ T31] ? __lock_acquire+0xab9/0xd20 [ 429.774017][ T31] ? __pfx___schedule+0x10/0x10 [ 429.779192][ T31] ? schedule+0x91/0x360 [ 429.783447][ T31] schedule+0x165/0x360 [ 429.787920][ T31] schedule_preempt_disabled+0x13/0x30 [ 429.793385][ T31] rwsem_down_read_slowpath+0x5fd/0x8f0 [ 429.799209][ T31] ? rwsem_down_read_slowpath+0x4b8/0x8f0 [ 429.805114][ T31] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 429.811190][ T31] ? exit_mm+0xcc/0x2c0 [ 429.815609][ T31] ? __pfx_mm_release+0x10/0x10 [ 429.820466][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 429.826134][ T31] down_read+0x98/0x2e0 [ 429.830301][ T31] exit_mm+0xcc/0x2c0 [ 429.834757][ T31] ? __pfx_exit_mm+0x10/0x10 [ 429.839377][ T31] ? rcu_is_watching+0x15/0xb0 [ 429.844147][ T31] do_exit+0x648/0x2300 [ 429.848592][ T31] ? do_raw_spin_lock+0x121/0x290 [ 429.853628][ T31] ? __pfx_do_exit+0x10/0x10 [ 429.858493][ T31] ? _raw_spin_unlock_irqrestore+0x85/0x110 [ 429.864638][ T31] do_group_exit+0x21c/0x2d0 [ 429.869232][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 429.874747][ T31] get_signal+0x1286/0x1340 [ 429.879279][ T31] arch_do_signal_or_restart+0x9a/0x750 [ 429.885066][ T31] ? rcu_is_watching+0x15/0xb0 [ 429.889841][ T31] ? __pfx_arch_do_signal_or_restart+0x10/0x10 [ 429.896273][ T31] ? __bad_area_nosemaphore+0x3fb/0x780 [ 429.901839][ T31] ? local_irq_enable_exit_to_user+0x5/0x10 [ 429.907958][ T31] irqentry_exit_to_user_mode+0x81/0x120 [ 429.913606][ T31] exc_page_fault+0x9f/0xf0 [ 429.918406][ T31] asm_exc_page_fault+0x26/0x30 [ 429.923270][ T31] RIP: 0033:0x7eff94a6aa90 [ 429.927913][ T31] RSP: 002b:00007ffe2e9a2ea8 EFLAGS: 00010202 [ 429.933988][ T31] RAX: 00007eff94a6aa90 RBX: 00007eff94b3430c RCX: 00007eff94aaa2a9 [ 429.942300][ T31] RDX: 00000000000f4240 RSI: 00007ffe2e9a2ef0 RDI: 0000000000000001 [ 429.951156][ T31] RBP: 0000000000000064 R08: 00007ffe2e9a2dd7 R09: 0000000000000000 [ 429.959490][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007eff94b34300 [ 429.967714][ T31] R13: 00007ffe2e9a2f30 R14: 00007ffe2e9a2ed8 R15: 00007eff94a75de0 [ 429.975989][ T31] [ 429.979083][ T31] [ 429.979083][ T31] Showing all locks held in the system: [ 429.987265][ T31] 1 lock held by khungtaskd/31: [ 429.992114][ T31] #0: ffffffff8e53d8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 430.002807][ T31] 2 locks held by getty/5602: [ 430.007832][ T31] #0: ffff88814dda60a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 430.017895][ T31] #1: ffffc900036d42f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 430.028298][ T31] 1 lock held by syz-executor280/5873: [ 430.033841][ T31] #0: ffff8880319b4d20 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 [ 430.043093][ T31] 1 lock held by syz-executor280/5874: [ 430.048874][ T31] [ 430.051199][ T31] ============================================= [ 430.051199][ T31] [ 430.060564][ T31] NMI backtrace for cpu 0 [ 430.060586][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 430.060605][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 430.060615][ T31] Call Trace: [ 430.060622][ T31] [ 430.060628][ T31] dump_stack_lvl+0x189/0x250 [ 430.060656][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.060677][ T31] ? __pfx__printk+0x10/0x10 [ 430.060711][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 430.060734][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 430.060755][ T31] ? __pfx__printk+0x10/0x10 [ 430.060780][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 430.060801][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 430.060823][ T31] watchdog+0xf93/0xfe0 [ 430.060845][ T31] ? watchdog+0x1de/0xfe0 [ 430.060867][ T31] kthread+0x70e/0x8a0 [ 430.060892][ T31] ? __pfx_watchdog+0x10/0x10 [ 430.060908][ T31] ? __pfx_kthread+0x10/0x10 [ 430.060930][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 430.060950][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.060970][ T31] ? __pfx_kthread+0x10/0x10 [ 430.061001][ T31] ret_from_fork+0x3f9/0x770 [ 430.061023][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 430.061048][ T31] ? __switch_to_asm+0x39/0x70 [ 430.061061][ T31] ? __switch_to_asm+0x33/0x70 [ 430.061074][ T31] ? __pfx_kthread+0x10/0x10 [ 430.061096][ T31] ret_from_fork_asm+0x1a/0x30 [ 430.061126][ T31] [ 430.061132][ T31] Sending NMI from CPU 0 to CPUs 1: [ 430.208076][ C1] NMI backtrace for cpu 1 [ 430.208092][ C1] CPU: 1 UID: 0 PID: 5874 Comm: syz-executor280 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 430.208109][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 430.208118][ C1] RIP: 0010:__sanitizer_cov_trace_cmp1+0x8/0x90 [ 430.208137][ C1] Code: cc cc cc cc cc 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 14 25 08 50 e7 92 65 8b 0d 88 4e 27 11 81 e1 00 01 ff 00 [ 430.208148][ C1] RSP: 0018:ffffc900041e7278 EFLAGS: 00000246 [ 430.208162][ C1] RAX: ffffffff8b785e11 RBX: ffff8880319b4b80 RCX: ffff88803317bc00 [ 430.208173][ C1] RDX: 0000000000000000 RSI: 000000000000000d RDI: 000000000000000b [ 430.208182][ C1] RBP: ffffc900041e7450 R08: ffff88803317bc00 R09: 0000000000000003 [ 430.208192][ C1] R10: 0000000000000003 R11: 0000000000000000 R12: 000000000000000b [ 430.208200][ C1] R13: dffffc0000000000 R14: ffff88802276f200 R15: 000000000000000d [ 430.208210][ C1] FS: 00007eff94a636c0(0000) GS:ffff8881258ab000(0000) knlGS:0000000000000000 [ 430.208223][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 430.208233][ C1] CR2: 00007ffdcde7cf19 CR3: 00000000293b4000 CR4: 00000000003526f0 [ 430.208246][ C1] Call Trace: [ 430.208253][ C1] [ 430.208258][ C1] mt_validate+0x4021/0x4380 [ 430.208285][ C1] ? __pfx_mt_validate+0x10/0x10 [ 430.208316][ C1] validate_mm+0xb6/0x4b0 [ 430.208336][ C1] ? __pfx_validate_mm+0x10/0x10 [ 430.208361][ C1] vma_link+0x366/0x450 [ 430.208380][ C1] ? __pfx_vma_link+0x10/0x10 [ 430.208401][ C1] ? anon_vma_clone+0x49b/0x4f0 [ 430.208416][ C1] ? anon_vma_name+0x87/0xf0 [ 430.208431][ C1] ? vm_area_dup+0x4f5/0x680 [ 430.208449][ C1] copy_vma+0x70c/0x940 [ 430.208470][ C1] ? __pfx_copy_vma+0x10/0x10 [ 430.208490][ C1] ? __pfx_move_page_tables+0x10/0x10 [ 430.208519][ C1] move_vma+0x81f/0x1840 [ 430.208536][ C1] ? __lock_acquire+0xab9/0xd20 [ 430.208559][ C1] ? arch_get_unmapped_area_topdown+0x251/0xbc0 [ 430.208576][ C1] ? __pfx_move_vma+0x10/0x10 [ 430.208596][ C1] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 430.208618][ C1] ? cap_mmap_addr+0xb0/0x100 [ 430.208634][ C1] ? bpf_lsm_mmap_addr+0x9/0x20 [ 430.208648][ C1] ? security_mmap_addr+0x71/0x270 [ 430.208668][ C1] mremap_to+0x6d6/0x7a0 [ 430.208689][ C1] ? __pfx_mremap_to+0x10/0x10 [ 430.208708][ C1] ? check_prep_vma+0x740/0xae0 [ 430.208730][ C1] __se_sys_mremap+0xa0b/0xef0 [ 430.208757][ C1] ? __pfx___se_sys_mremap+0x10/0x10 [ 430.208777][ C1] ? __pfx_ptrace_notify+0x10/0x10 [ 430.208800][ C1] ? __x64_sys_mremap+0x20/0xc0 [ 430.208818][ C1] do_syscall_64+0xfa/0x3b0 [ 430.208837][ C1] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.208850][ C1] ? __switch_to_asm+0x39/0x70 [ 430.208863][ C1] ? clear_bhb_loop+0x60/0xb0 [ 430.208879][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.208892][ C1] RIP: 0033:0x7eff94aaa2a9 [ 430.208905][ 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 [ 430.208916][ C1] RSP: 002b:00007eff94a63238 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 [ 430.208930][ C1] RAX: ffffffffffffffda RBX: 00007eff94b34308 RCX: 00007eff94aaa2a9 [ 430.208940][ C1] RDX: 0000000000001000 RSI: 0000000000001000 RDI: 0000200000000000 [ 430.208950][ C1] RBP: 00007eff94b34300 R08: 0000200000481000 R09: 00007eff94a636c0 [ 430.208960][ C1] R10: 0000000000000007 R11: 0000000000000246 R12: 0000200000000000 [ 430.208975][ C1] R13: 0000000000000000 R14: 00007ffe2e9a2cf0 R15: 00007ffe2e9a2dd8 [ 430.208992][ C1] [ 430.212081][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 430.577519][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 430.588808][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 430.598862][ T31] Call Trace: [ 430.602140][ T31] [ 430.605073][ T31] dump_stack_lvl+0x99/0x250 [ 430.609668][ T31] ? __asan_memcpy+0x40/0x70 [ 430.614262][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.619462][ T31] ? __pfx__printk+0x10/0x10 [ 430.624084][ T31] vpanic+0x281/0x750 [ 430.628073][ T31] ? rcu_is_watching+0x15/0xb0 [ 430.632840][ T31] ? __pfx_vpanic+0x10/0x10 [ 430.637341][ T31] ? preempt_schedule_irq+0xde/0x150 [ 430.642629][ T31] ? __pfx_preempt_schedule_irq+0x10/0x10 [ 430.648362][ T31] panic+0xb9/0xc0 [ 430.652082][ T31] ? __pfx_panic+0x10/0x10 [ 430.656506][ T31] ? panic+0x4/0xc0 [ 430.660318][ T31] watchdog+0xfd2/0xfe0 [ 430.664478][ T31] ? watchdog+0x1de/0xfe0 [ 430.668817][ T31] kthread+0x70e/0x8a0 [ 430.673062][ T31] ? __pfx_watchdog+0x10/0x10 [ 430.677736][ T31] ? __pfx_kthread+0x10/0x10 [ 430.682346][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 430.687556][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.692762][ T31] ? __pfx_kthread+0x10/0x10 [ 430.697360][ T31] ret_from_fork+0x3f9/0x770 [ 430.701960][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 430.707076][ T31] ? __switch_to_asm+0x39/0x70 [ 430.711838][ T31] ? __switch_to_asm+0x33/0x70 [ 430.716773][ T31] ? __pfx_kthread+0x10/0x10 [ 430.721368][ T31] ret_from_fork_asm+0x1a/0x30 [ 430.726143][ T31] [ 430.729414][ T31] Kernel Offset: disabled [ 430.733726][ T31] Rebooting in 86400 seconds..