./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1780325468 <...> Warning: Permanently added '10.128.1.120' (ED25519) to the list of known hosts. execve("./syz-executor1780325468", ["./syz-executor1780325468"], 0x7fff888e5bb0 /* 10 vars */) = 0 brk(NULL) = 0x55558b097000 brk(0x55558b097d00) = 0x55558b097d00 arch_prctl(ARCH_SET_FS, 0x55558b097380) = 0 set_tid_address(0x55558b097650) = 5892 set_robust_list(0x55558b097660, 24) = 0 rseq(0x55558b097ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1780325468", 4096) = 28 getrandom("\x33\xde\x98\x79\x66\xdc\x23\xe5", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558b097d00 brk(0x55558b0b8d00) = 0x55558b0b8d00 brk(0x55558b0b9000) = 0x55558b0b9000 mprotect(0x7fa311fc0000, 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=0x55558b097650) = 5893 ./strace-static-x86_64: Process 5893 attached [pid 5893] set_robust_list(0x55558b097660, 24) = 0 [pid 5893] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5893] setpgid(0, 0) = 0 [pid 5893] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5893] write(3, "1000", 4) = 4 [pid 5893] close(3) = 0 executing program [pid 5893] write(1, "executing program\n", 18) = 18 [pid 5893] creat("./file0", 000) = 3 [pid 5893] pipe2([4, 5], 0) = 0 [pid 5893] write(5, "\x15\x00\x00\x00\x65\xff\xff\x04\x80\x00\x00\x08\x00\x39\x50\x32\x30\x30\x30\x00\x00", 21) = 21 [pid 5893] dup(5) = 6 [pid 5893] write(6, "\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 24) = 24 [pid 5893] write(6, "\x4c\x01\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 311) = 311 [pid 5893] mount(NULL, "./file0", "9p", MS_SYNCHRONOUS|MS_REC, "trans=fd,rfdno=0x0000000000000004,wfdno=0x0000000000000006,cache=mmap,k") = 0 [pid 5893] chmod("./file0", 000) = 0 [pid 5893] open("./file0", O_WRONLY) = -1 EIO (Input/output error) [pid 5893] write(-1, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32748) = -1 EBADF (Bad file descriptor) [pid 5893] exit_group(0) = ? [pid 5893] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5893, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted clone ...>) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5895 attached , child_tidptr=0x55558b097650) = 5895 [pid 5895] set_robust_list(0x55558b097660, 24) = 0 [pid 5895] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5895] setpgid(0, 0) = 0 [pid 5895] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5895] write(3, "1000", 4) = 4 [pid 5895] close(3) = 0 executing program [pid 5895] write(1, "executing program\n", 18) = 18 [pid 5895] creat("./file0", 000) = -1 EIO (Input/output error) [pid 5895] pipe2([3, 4], 0) = 0 [pid 5895] write(4, "\x15\x00\x00\x00\x65\xff\xff\x04\x80\x00\x00\x08\x00\x39\x50\x32\x30\x30\x30\x00\x00", 21) = 21 [pid 5895] dup(4) = 5 [pid 5895] write(5, "\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00", 24) = 24 [pid 5895] write(5, "\x4c\x01\x00\x00\x05\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x18\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 311) = 311 [pid 5895] mount(NULL, "./file0", "9p", MS_SYNCHRONOUS|MS_REC, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000005,cache=mmap,k") = 0 [pid 5895] chmod("./file0", 000) = 0 [pid 5895] open("./file0", O_WRONLY) = 6 [pid 5895] write(6, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 32748 [pid 5892] kill(-5895, SIGKILL) = 0 [pid 5892] kill(5895, SIGKILL) = 0 [pid 5892] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5892] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5892] getdents64(3, 0x55558b0986f0 /* 2 entries */, 32768) = 48 [pid 5892] getdents64(3, 0x55558b0986f0 /* 0 entries */, 32768) = 0 [pid 5892] close(3) = 0 [ 286.737354][ T31] INFO: task syz-executor178:5895 blocked for more than 143 seconds. [ 286.745636][ T31] Not tainted 6.17.0-rc1-next-20250814-syzkaller #0 [ 286.752764][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.761533][ T31] task:syz-executor178 state:D stack:25704 pid:5895 tgid:5895 ppid:5892 task_flags:0x400140 flags:0x00004006 [ 286.773644][ T31] Call Trace: [ 286.777006][ T31] [ 286.779966][ T31] __schedule+0x1798/0x4cc0 [ 286.784490][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.789441][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.794233][ T31] ? __pfx_call_function_single_prep_ipi+0x10/0x10 [ 286.800804][ T31] ? __pfx___schedule+0x10/0x10 [ 286.805714][ T31] ? do_raw_spin_lock+0x121/0x290 [ 286.810937][ T31] ? schedule+0x91/0x360 [ 286.815278][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.820081][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.824931][ T31] ? lock_release+0x4b/0x3e0 [ 286.829543][ T31] schedule+0x165/0x360 [ 286.833707][ T31] io_schedule+0x80/0xd0 [ 286.838002][ T31] folio_wait_bit_common+0x6b0/0xb90 [ 286.843326][ T31] ? folio_try_get+0x1c/0x340 [ 286.848067][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.852868][ T31] ? __pfx_folio_wait_bit_common+0x10/0x10 [ 286.858724][ T31] ? __pfx_wake_page_function+0x10/0x10 [ 286.864338][ T31] ? __pfx_filemap_get_folios_tag+0x10/0x10 [ 286.870349][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.875249][ T31] folio_wait_writeback+0xb0/0x100 [ 286.880401][ T31] __filemap_fdatawait_range+0x147/0x230 [ 286.886151][ T31] ? __pfx___filemap_fdatawait_range+0x10/0x10 [ 286.892352][ T31] ? wbc_detach_inode+0x137/0x750 [ 286.897477][ T31] file_write_and_wait_range+0x28a/0x340 [ 286.903129][ T31] ? __pfx_file_write_and_wait_range+0x10/0x10 [ 286.909361][ T31] v9fs_file_fsync+0xcf/0x1a0 [ 286.914082][ T31] ? __pfx_v9fs_file_fsync+0x10/0x10 [ 286.919435][ T31] ? __up_read+0x280/0x680 [ 286.923881][ T31] ? __pfx___up_read+0x10/0x10 [ 286.928729][ T31] ? lock_release+0x4b/0x3e0 [ 286.933423][ T31] netfs_file_write_iter+0x3d8/0x4a0 [ 286.939071][ T31] vfs_write+0x5c6/0xb30 [ 286.943353][ T31] ? __pfx_v9fs_file_write_iter+0x10/0x10 [ 286.949153][ T31] ? __pfx_vfs_write+0x10/0x10 [ 286.953981][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.958850][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 286.964087][ T31] ksys_write+0x145/0x250 [ 286.968483][ T31] ? __pfx_ksys_write+0x10/0x10 [ 286.973361][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.978189][ T31] do_syscall_64+0xfa/0x3b0 [ 286.982721][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.988850][ T31] ? clear_bhb_loop+0x60/0xb0 [ 286.993546][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.999502][ T31] RIP: 0033:0x7fa311f4cef9 [ 287.003963][ T31] RSP: 002b:00007ffcf71f0098 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 287.012531][ T31] RAX: ffffffffffffffda RBX: 0000200000000140 RCX: 00007fa311f4cef9 [ 287.020580][ T31] RDX: 0000000000007fec RSI: 0000200000000300 RDI: 0000000000000006 [ 287.028656][ T31] RBP: 0030656c69662f2e R08: 0000000000000006 R09: 0000000000000006 [ 287.036687][ T31] R10: 0000000000000006 R11: 0000000000000246 R12: 0000200000000180 [ 287.044744][ T31] R13: 00007fa311f9604e R14: 0000000000000001 R15: 0000000000000001 [ 287.052778][ T31] [ 287.055885][ T31] INFO: lockdep is turned off. [ 287.060669][ T31] NMI backtrace for cpu 0 [ 287.060687][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.17.0-rc1-next-20250814-syzkaller #0 PREEMPT(full) [ 287.060704][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 287.060713][ T31] Call Trace: [ 287.060720][ T31] [ 287.060726][ T31] dump_stack_lvl+0x189/0x250 [ 287.060754][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.060775][ T31] ? __pfx__printk+0x10/0x10 [ 287.060805][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 287.060828][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 287.060849][ T31] ? __pfx__printk+0x10/0x10 [ 287.060870][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 287.060889][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 287.060911][ T31] watchdog+0xf60/0xfa0 [ 287.060928][ T31] ? watchdog+0x1e2/0xfa0 [ 287.060943][ T31] kthread+0x711/0x8a0 [ 287.060957][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.060970][ T31] ? __pfx_kthread+0x10/0x10 [ 287.060992][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.061015][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.061030][ T31] ? __pfx_kthread+0x10/0x10 [ 287.061051][ T31] ret_from_fork+0x3f9/0x770 [ 287.061071][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.061091][ T31] ? __switch_to_asm+0x39/0x70 [ 287.061103][ T31] ? __switch_to_asm+0x33/0x70 [ 287.061116][ T31] ? __pfx_kthread+0x10/0x10 [ 287.061137][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.061156][ T31] [ 287.061161][ T31] Sending NMI from CPU 0 to CPUs 1: [ 287.209443][ C1] NMI backtrace for cpu 1 [ 287.209464][ C1] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.17.0-rc1-next-20250814-syzkaller #0 PREEMPT(full) [ 287.209484][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 287.209496][ C1] RIP: 0010:pv_native_safe_halt+0x13/0x20 [ 287.209522][ C1] Code: 53 e8 02 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 33 1a 25 00 f3 0f 1e fa fb f4 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 90 90 90 90 [ 287.209536][ C1] RSP: 0018:ffffc90000197de0 EFLAGS: 000002c6 [ 287.209553][ C1] RAX: bae1e718b0ace000 RBX: ffffffff8196d368 RCX: bae1e718b0ace000 [ 287.209567][ C1] RDX: 0000000000000001 RSI: ffffffff8c04d960 RDI: ffffffff8196d368 [ 287.209578][ C1] RBP: ffffc90000197f20 R08: ffff8880b8732f9b R09: 1ffff110170e65f3 [ 287.209591][ C1] R10: dffffc0000000000 R11: ffffed10170e65f4 R12: ffffffff8fe4db30 [ 287.209603][ C1] R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff11003ad8b40 [ 287.209614][ C1] FS: 0000000000000000(0000) GS:ffff8881258d6000(0000) knlGS:0000000000000000 [ 287.209628][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.209640][ C1] CR2: 000055c5da47c660 CR3: 000000000e336000 CR4: 00000000003526f0 [ 287.209655][ C1] Call Trace: [ 287.209665][ C1] [ 287.209672][ C1] default_idle+0x13/0x20 [ 287.209693][ C1] default_idle_call+0x74/0xb0 [ 287.209716][ C1] do_idle+0x1e8/0x510 [ 287.209740][ C1] ? __pfx_do_idle+0x10/0x10 [ 287.209759][ C1] ? _raw_spin_unlock_irqrestore+0x85/0x110 [ 287.209787][ C1] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.209804][ C1] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 287.209831][ C1] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 287.209860][ C1] cpu_startup_entry+0x44/0x60 [ 287.209881][ C1] start_secondary+0x101/0x110 [ 287.209900][ C1] common_startup_64+0x13e/0x147 [ 287.209924][ C1] [ 287.215797][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 287.215830][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.17.0-rc1-next-20250814-syzkaller #0 PREEMPT(full) [ 287.215860][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 287.215875][ T31] Call Trace: [ 287.215884][ T31] [ 287.215894][ T31] dump_stack_lvl+0x99/0x250 [ 287.215936][ T31] ? __asan_memcpy+0x40/0x70 [ 287.215971][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.216005][ T31] ? __pfx__printk+0x10/0x10 [ 287.216044][ T31] vpanic+0x281/0x750 [ 287.216075][ T31] ? __pfx_vpanic+0x10/0x10 [ 287.216101][ T31] ? rcu_is_watching+0x15/0xb0 [ 287.216130][ T31] ? preempt_schedule+0xae/0xc0 [ 287.216155][ T31] ? preempt_schedule_common+0x83/0xd0 [ 287.216179][ T31] panic+0xb9/0xc0 [ 287.216205][ T31] ? __pfx_panic+0x10/0x10 [ 287.216233][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 287.216264][ T31] ? nmi_trigger_cpumask_backtrace+0x2bb/0x300 [ 287.216299][ T31] watchdog+0xf9f/0xfa0 [ 287.216326][ T31] ? watchdog+0x1e2/0xfa0 [ 287.216352][ T31] kthread+0x711/0x8a0 [ 287.216376][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.216398][ T31] ? __pfx_kthread+0x10/0x10 [ 287.216433][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.216467][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.216488][ T31] ? __pfx_kthread+0x10/0x10 [ 287.216523][ T31] ret_from_fork+0x3f9/0x770 [ 287.216555][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.216586][ T31] ? __switch_to_asm+0x39/0x70 [ 287.216608][ T31] ? __switch_to_asm+0x33/0x70 [ 287.216628][ T31] ? __pfx_kthread+0x10/0x10 [ 287.216663][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.216693][ T31] [ 287.560139][ T31] Kernel Offset: disabled [ 287.564471][ T31] Rebooting in 86400 seconds..