./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1188150920 <...> Warning: Permanently added '10.128.1.141' (ED25519) to the list of known hosts. execve("./syz-executor1188150920", ["./syz-executor1188150920"], 0x7ffef99db940 /* 10 vars */) = 0 brk(NULL) = 0x55558de9e000 brk(0x55558de9ed40) = 0x55558de9ed40 arch_prctl(ARCH_SET_FS, 0x55558de9e3c0) = 0 set_tid_address(0x55558de9e690) = 5874 set_robust_list(0x55558de9e6a0, 24) = 0 rseq(0x55558de9ece0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1188150920", 4096) = 28 getrandom("\xf3\xb5\x45\x07\x87\x53\x14\x27", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558de9ed40 brk(0x55558debfd40) = 0x55558debfd40 brk(0x55558dec0000) = 0x55558dec0000 mprotect(0x7fa666922000, 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 5875 attached [pid 5875] set_robust_list(0x55558de9e6a0, 24 [pid 5874] <... clone resumed>, child_tidptr=0x55558de9e690) = 5875 [pid 5875] <... set_robust_list resumed>) = 0 [pid 5875] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5875] setpgid(0, 0) = 0 [pid 5875] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5875] write(3, "1000", 4) = 4 [pid 5875] close(3executing program ) = 0 [pid 5875] write(1, "executing program\n", 18) = 18 [pid 5875] futex(0x7fa66692830c, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5875] rt_sigaction(SIGRT_1, {sa_handler=0x7fa6668c41e0, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7fa6668b5860}, NULL, 8) = 0 [pid 5875] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5875] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7fa666837000 [pid 5875] mprotect(0x7fa666838000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5875] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5875] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7fa666857990, parent_tid=0x7fa666857990, exit_signal=0, stack=0x7fa666837000, stack_size=0x20300, tls=0x7fa6668576c0}./strace-static-x86_64: Process 5876 attached => {parent_tid=[5876]}, 88) = 5876 [pid 5876] rseq(0x7fa666857fe0, 0x20, 0, 0x53053053 [pid 5875] rt_sigprocmask(SIG_SETMASK, [], [pid 5876] <... rseq resumed>) = 0 [pid 5875] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5876] set_robust_list(0x7fa6668579a0, 24 [pid 5875] futex(0x7fa666928308, FUTEX_WAKE_PRIVATE, 1000000 [pid 5876] <... set_robust_list resumed>) = 0 [pid 5875] <... futex resumed>) = 0 [pid 5876] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5876] mremap(0x200000000000, 4096, 4096, MREMAP_MAYMOVE|MREMAP_FIXED|MREMAP_DONTUNMAP, 0x200000481000 [pid 5875] futex(0x7fa66692830c, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5875] exit_group(0) = ? [pid 5874] kill(-5875, SIGKILL) = 0 [pid 5874] kill(5875, SIGKILL) = 0 [pid 5874] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5874] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5874] getdents64(3, 0x55558de9f730 /* 2 entries */, 32768) = 48 [pid 5874] getdents64(3, 0x55558de9f730 /* 0 entries */, 32768) = 0 [pid 5874] close(3) = 0 [ 286.509862][ T31] INFO: task syz-executor118:5875 blocked for more than 143 seconds. [ 286.518173][ T31] Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 [ 286.525494][ T31] Blocked by coredump. [ 286.530559][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.539472][ T31] task:syz-executor118 state:D stack:26920 pid:5875 tgid:5875 ppid:5874 task_flags:0x40004c flags:0x00004002 [ 286.551624][ T31] Call Trace: [ 286.554908][ T31] [ 286.558534][ T31] __schedule+0x1737/0x4d30 [ 286.563096][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.568193][ T31] ? schedule+0x165/0x360 [ 286.572533][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.578126][ T31] ? __pfx___schedule+0x10/0x10 [ 286.583009][ T31] ? schedule+0x91/0x360 [ 286.587500][ T31] schedule+0x165/0x360 [ 286.591670][ T31] schedule_preempt_disabled+0x13/0x30 [ 286.597134][ T31] rwsem_down_read_slowpath+0x5fd/0x8f0 [ 286.603015][ T31] ? rwsem_down_read_slowpath+0x4b8/0x8f0 [ 286.608930][ T31] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 286.615011][ T31] ? exit_mm+0xcc/0x2c0 [ 286.619450][ T31] ? __pfx_mm_release+0x10/0x10 [ 286.624311][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.629765][ T31] down_read+0x98/0x2e0 [ 286.633930][ T31] exit_mm+0xcc/0x2c0 [ 286.638242][ T31] ? __pfx_exit_mm+0x10/0x10 [ 286.642856][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.647867][ T31] do_exit+0x648/0x2300 [ 286.652051][ T31] ? __pfx_do_exit+0x10/0x10 [ 286.656655][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.662250][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.668070][ T31] do_group_exit+0x21c/0x2d0 [ 286.672685][ T31] __x64_sys_exit_group+0x3f/0x40 [ 286.677981][ T31] x64_sys_call+0x21f7/0x2200 [ 286.682672][ T31] do_syscall_64+0xfa/0x3b0 [ 286.687179][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.692677][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.698999][ T31] ? clear_bhb_loop+0x60/0xb0 [ 286.703687][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.709815][ T31] RIP: 0033:0x7fa66689c309 [ 286.714253][ T31] RSP: 002b:00007fffe03e4608 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 286.722960][ T31] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fa66689c309 [ 286.731130][ T31] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 286.739384][ T31] RBP: 00007fa6669282b0 R08: ffffffffffffffb0 R09: 7fffffffffffffff [ 286.747534][ T31] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fa6669282b0 [ 286.755509][ T31] R13: 0000000000000000 R14: 00007fa666928e40 R15: 00007fa66686a120 [ 286.763818][ T31] [ 286.766932][ T31] [ 286.766932][ T31] Showing all locks held in the system: [ 286.774953][ T31] 1 lock held by khungtaskd/31: [ 286.780529][ T31] #0: ffffffff8e13d8a0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 286.790687][ T31] 2 locks held by getty/5612: [ 286.795398][ T31] #0: ffff88803006b0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 286.805477][ T31] #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 286.815835][ T31] 1 lock held by syz-executor118/5875: [ 286.821615][ T31] #0: ffff88807c7f1760 (&mm->mmap_lock){++++}-{4:4}, at: exit_mm+0xcc/0x2c0 [ 286.830662][ T31] 1 lock held by syz-executor118/5876: [ 286.836183][ T31] [ 286.838740][ T31] ============================================= [ 286.838740][ T31] [ 286.847188][ T31] NMI backtrace for cpu 0 [ 286.847213][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 286.847229][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 286.847237][ T31] Call Trace: [ 286.847245][ T31] [ 286.847253][ T31] dump_stack_lvl+0x189/0x250 [ 286.847281][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 286.847300][ T31] ? __pfx__printk+0x10/0x10 [ 286.847331][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 286.847364][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 286.847386][ T31] ? __pfx__printk+0x10/0x10 [ 286.847409][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 286.847434][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 286.847456][ T31] watchdog+0xf93/0xfe0 [ 286.847482][ T31] ? watchdog+0x1de/0xfe0 [ 286.847507][ T31] kthread+0x70e/0x8a0 [ 286.847528][ T31] ? __pfx_watchdog+0x10/0x10 [ 286.847547][ T31] ? __pfx_kthread+0x10/0x10 [ 286.847567][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.847587][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.847607][ T31] ? __pfx_kthread+0x10/0x10 [ 286.847625][ T31] ret_from_fork+0x3f9/0x770 [ 286.847644][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 286.847665][ T31] ? __switch_to_asm+0x39/0x70 [ 286.847682][ T31] ? __switch_to_asm+0x33/0x70 [ 286.847699][ T31] ? __pfx_kthread+0x10/0x10 [ 286.847717][ T31] ret_from_fork_asm+0x1a/0x30 [ 286.847749][ T31] [ 286.988961][ T31] Sending NMI from CPU 0 to CPUs 1: [ 286.994202][ C1] NMI backtrace for cpu 1 [ 286.994217][ C1] CPU: 1 UID: 0 PID: 5876 Comm: syz-executor118 Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 286.994235][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 286.994244][ C1] RIP: 0010:__sanitizer_cov_trace_pc+0x37/0x70 [ 286.994268][ C1] Code: 08 d0 a3 92 65 8b 15 08 1f e4 10 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 3c 16 00 00 00 74 2c 8b 91 18 16 00 00 <83> fa 02 75 21 48 8b 91 20 16 00 00 48 8b 32 48 8d 7e 01 8b 89 1c [ 286.994280][ C1] RSP: 0018:ffffc900043ff278 EFLAGS: 00000246 [ 286.994294][ C1] RAX: ffffffff8b70ca58 RBX: 0000000000000005 RCX: ffff888025905a00 [ 286.994304][ C1] RDX: 0000000000000000 RSI: 00001feb0a978fff RDI: 00001feb0697cfff [ 286.994314][ C1] RBP: ffffc900043ff450 R08: ffff888025905a00 R09: 0000000000000004 [ 286.994325][ C1] R10: 0000000000000003 R11: 0000000000000000 R12: ffff88807f600030 [ 286.994334][ C1] R13: 00001feb0697cfff R14: 00001feb0a978fff R15: 0000000000000001 [ 286.994344][ C1] FS: 00007fa6668576c0(0000) GS:ffff888125ce3000(0000) knlGS:0000000000000000 [ 286.994357][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 286.994366][ C1] CR2: 0000559270351168 CR3: 000000001bec0000 CR4: 00000000003526f0 [ 286.994380][ C1] Call Trace: [ 286.994387][ C1] [ 286.994393][ C1] mt_validate+0xc68/0x4380 [ 286.994417][ C1] ? __pfx_mt_validate+0x10/0x10 [ 286.994450][ C1] validate_mm+0xb6/0x4b0 [ 286.994467][ C1] ? __pfx_validate_mm+0x10/0x10 [ 286.994490][ C1] vma_link+0x366/0x450 [ 286.994507][ C1] ? __pfx_vma_link+0x10/0x10 [ 286.994525][ C1] ? anon_vma_clone+0x49b/0x4f0 [ 286.994543][ C1] ? anon_vma_name+0x87/0xf0 [ 286.994561][ C1] ? vm_area_dup+0x4f5/0x680 [ 286.994576][ C1] copy_vma+0x70c/0x940 [ 286.994596][ C1] ? __pfx_copy_vma+0x10/0x10 [ 286.994613][ C1] ? __pfx_move_page_tables+0x10/0x10 [ 286.994628][ C1] ? irqentry_exit+0x74/0x90 [ 286.994651][ C1] move_vma+0x81f/0x1840 [ 286.994666][ C1] ? __lock_acquire+0xab9/0xd20 [ 286.994692][ C1] ? arch_get_unmapped_area_topdown+0x251/0xbc0 [ 286.994707][ C1] ? __pfx_move_vma+0x10/0x10 [ 286.994726][ C1] ? __pfx_arch_get_unmapped_area_topdown+0x10/0x10 [ 286.994745][ C1] ? cap_mmap_addr+0xb0/0x100 [ 286.994764][ C1] ? bpf_lsm_mmap_addr+0x9/0x20 [ 286.994780][ C1] ? security_mmap_addr+0x71/0x270 [ 286.994801][ C1] mremap_to+0x6d6/0x7a0 [ 286.994819][ C1] ? __pfx_mremap_to+0x10/0x10 [ 286.994837][ C1] ? check_prep_vma+0x740/0xae0 [ 286.994856][ C1] __se_sys_mremap+0xa0b/0xef0 [ 286.994881][ C1] ? __pfx___se_sys_mremap+0x10/0x10 [ 286.994899][ C1] ? __pfx_ptrace_notify+0x10/0x10 [ 286.994924][ C1] ? __x64_sys_mremap+0x20/0xc0 [ 286.994940][ C1] do_syscall_64+0xfa/0x3b0 [ 286.994954][ C1] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.994968][ C1] ? __switch_to_asm+0x39/0x70 [ 286.994984][ C1] ? clear_bhb_loop+0x60/0xb0 [ 286.995000][ C1] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.995014][ C1] RIP: 0033:0x7fa66689e2a9 [ 286.995026][ 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 [ 286.995037][ C1] RSP: 002b:00007fa666857238 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 [ 286.995051][ C1] RAX: ffffffffffffffda RBX: 00007fa666928308 RCX: 00007fa66689e2a9 [ 286.995062][ C1] RDX: 0000000000001000 RSI: 0000000000001000 RDI: 0000200000000000 [ 286.995071][ C1] RBP: 00007fa666928300 R08: 0000200000481000 R09: 00007fa6668576c0 [ 286.995081][ C1] R10: 0000000000000007 R11: 0000000000000246 R12: 0000200000000000 [ 286.995091][ C1] R13: 0000000000000000 R14: 00007fffe03e44a0 R15: 00007fffe03e4588 [ 286.995107][ C1] [ 286.995979][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 287.365473][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250718-syzkaller #0 PREEMPT(full) [ 287.376737][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 287.386776][ T31] Call Trace: [ 287.390043][ T31] [ 287.392963][ T31] dump_stack_lvl+0x99/0x250 [ 287.397543][ T31] ? __asan_memcpy+0x40/0x70 [ 287.402119][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.407299][ T31] ? __pfx__printk+0x10/0x10 [ 287.411883][ T31] vpanic+0x281/0x750 [ 287.415852][ T31] ? __pfx_vpanic+0x10/0x10 [ 287.420339][ T31] ? preempt_schedule+0xae/0xc0 [ 287.425182][ T31] ? preempt_schedule_common+0x83/0xd0 [ 287.430633][ T31] panic+0xb9/0xc0 [ 287.434340][ T31] ? __pfx_panic+0x10/0x10 [ 287.438740][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 287.444103][ T31] ? nmi_trigger_cpumask_backtrace+0x2bb/0x300 [ 287.450250][ T31] watchdog+0xfd2/0xfe0 [ 287.454402][ T31] ? watchdog+0x1de/0xfe0 [ 287.458725][ T31] kthread+0x70e/0x8a0 [ 287.462782][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.467443][ T31] ? __pfx_kthread+0x10/0x10 [ 287.472019][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.477205][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.482393][ T31] ? __pfx_kthread+0x10/0x10 [ 287.486970][ T31] ret_from_fork+0x3f9/0x770 [ 287.491545][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.496664][ T31] ? __switch_to_asm+0x39/0x70 [ 287.501416][ T31] ? __switch_to_asm+0x33/0x70 [ 287.506175][ T31] ? __pfx_kthread+0x10/0x10 [ 287.510752][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.515513][ T31] [ 287.518783][ T31] Kernel Offset: disabled [ 287.523096][ T31] Rebooting in 86400 seconds..