./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor446680297 <...> Warning: Permanently added '10.128.0.86' (ED25519) to the list of known hosts. execve("./syz-executor446680297", ["./syz-executor446680297"], 0x7ffef49ff8d0 /* 10 vars */) = 0 brk(NULL) = 0x555594fe4000 brk(0x555594fe4d40) = 0x555594fe4d40 arch_prctl(ARCH_SET_FS, 0x555594fe43c0) = 0 set_tid_address(0x555594fe4690) = 5882 set_robust_list(0x555594fe46a0, 24) = 0 rseq(0x555594fe4ce0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor446680297", 4096) = 27 getrandom("\x16\xdd\x12\x64\x4b\x76\x80\xca", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555594fe4d40 brk(0x555595005d40) = 0x555595005d40 brk(0x555595006000) = 0x555595006000 mprotect(0x7f6da5c0c000, 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 5883 attached [pid 5883] set_robust_list(0x555594fe46a0, 24 [pid 5882] <... clone resumed>, child_tidptr=0x555594fe4690) = 5883 [pid 5883] <... set_robust_list resumed>) = 0 [pid 5883] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5883] setpgid(0, 0) = 0 [pid 5883] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5883] write(3, "1000", 4) = 4 [pid 5883] close(3) = 0 executing program [pid 5883] write(1, "executing program\n", 18) = 18 [pid 5883] futex(0x7f6da5c123ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5883] rt_sigaction(SIGRT_1, {sa_handler=0x7f6da5bae760, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f6da5b9fde0}, NULL, 8) = 0 [pid 5883] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 5883] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f6da5b21000 [pid 5883] mprotect(0x7f6da5b22000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5883] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5883] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f6da5b41990, parent_tid=0x7f6da5b41990, exit_signal=0, stack=0x7f6da5b21000, stack_size=0x20300, tls=0x7f6da5b416c0}./strace-static-x86_64: Process 5884 attached => {parent_tid=[5884]}, 88) = 5884 [pid 5884] rseq(0x7f6da5b41fe0, 0x20, 0, 0x53053053 [pid 5883] rt_sigprocmask(SIG_SETMASK, [], [pid 5884] <... rseq resumed>) = 0 [pid 5883] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5884] set_robust_list(0x7f6da5b419a0, 24) = 0 [pid 5883] futex(0x7f6da5c123e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5884] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5883] <... futex resumed>) = 0 [pid 5884] mkdir("./file0", 000 [pid 5883] futex(0x7f6da5c123ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5884] <... mkdir resumed>) = 0 [pid 5884] futex(0x7f6da5c123ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5883] <... futex resumed>) = 0 [pid 5884] futex(0x7f6da5c123e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5883] futex(0x7f6da5c123e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5884] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5883] <... futex resumed>) = 0 [pid 5884] pipe2( [pid 5883] futex(0x7f6da5c123ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5884] <... pipe2 resumed>[3, 4], 0) = 0 [pid 5884] futex(0x7f6da5c123ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5884] futex(0x7f6da5c123e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5883] <... futex resumed>) = 0 [pid 5884] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5883] futex(0x7f6da5c123e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5884] write(4, "\x15\x00\x00\x00\x65\xff\xff\x00\x10\x00\x00\x08\x00\x39\x50\x32\x30\x30\x30\x00\x00", 21 [pid 5883] <... futex resumed>) = 0 [pid 5884] <... write resumed>) = 21 [pid 5883] futex(0x7f6da5c123ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5884] futex(0x7f6da5c123ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5883] <... futex resumed>) = 0 [pid 5884] futex(0x7f6da5c123e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5883] futex(0x7f6da5c123e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5884] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5883] <... futex resumed>) = 0 [pid 5884] dup(4 [pid 5883] futex(0x7f6da5c123ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5884] <... dup resumed>) = 5 [pid 5884] futex(0x7f6da5c123ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5883] <... futex resumed>) = 0 [pid 5884] futex(0x7f6da5c123e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5883] futex(0x7f6da5c123e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5884] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5883] <... futex resumed>) = 0 [pid 5884] 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 [pid 5883] futex(0x7f6da5c123ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5884] <... write resumed>) = 24 [pid 5884] futex(0x7f6da5c123ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5883] <... futex resumed>) = 0 [pid 5884] futex(0x7f6da5c123e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5883] futex(0x7f6da5c123e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5884] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5883] <... futex resumed>) = 0 [pid 5884] write(5, "\x58\x00\x00\x00\x00\x00\x00\x00\x9f\xed\x27\x88\xc5\x53\x29\x94\x41\x4b\x47\x03\x48\x01\xd5\x24\xfa\xf4\x16\x63\x82\x17\xff\xff\xff\xff\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", 63 [pid 5883] futex(0x7f6da5c123ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5884] <... write resumed>) = 63 [pid 5884] futex(0x7f6da5c123ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5883] <... futex resumed>) = 0 [pid 5884] futex(0x7f6da5c123e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5883] futex(0x7f6da5c123e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5884] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5883] <... futex resumed>) = 0 [pid 5883] futex(0x7f6da5c123ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5884] mount(NULL, "./file0", "9p", 0, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000004") = 0 [pid 5884] futex(0x7f6da5c123ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 5883] <... futex resumed>) = 0 [pid 5884] <... futex resumed>) = 1 [pid 5883] futex(0x7f6da5c123e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5884] chdir("./file0" [pid 5883] <... futex resumed>) = 0 [pid 5883] futex(0x7f6da5c123ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5884] <... chdir resumed>) = 0 [pid 5884] futex(0x7f6da5c123ec, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5883] <... futex resumed>) = 0 [pid 5884] futex(0x7f6da5c123e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5883] futex(0x7f6da5c123e8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5884] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5883] <... futex resumed>) = 0 [pid 5884] openat(AT_FDCWD, "net_prio.prioidx", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_APPEND|FASYNC|0x18, 000 [pid 5883] futex(0x7f6da5c123ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5883] futex(0x7f6da5c123fc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5883] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f6da5b00000 [pid 5883] mprotect(0x7f6da5b01000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5883] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 5883] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7f6da5b20990, parent_tid=0x7f6da5b20990, exit_signal=0, stack=0x7f6da5b00000, stack_size=0x20300, tls=0x7f6da5b206c0}./strace-static-x86_64: Process 5886 attached [pid 5886] rseq(0x7f6da5b20fe0, 0x20, 0, 0x53053053) = 0 [pid 5886] set_robust_list(0x7f6da5b209a0, 24) = 0 [pid 5883] <... clone3 resumed> => {parent_tid=[5886]}, 88) = 5886 [pid 5886] rt_sigprocmask(SIG_SETMASK, [], [pid 5883] rt_sigprocmask(SIG_SETMASK, [], [pid 5886] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5883] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 5886] futex(0x7f6da5c123f8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5883] futex(0x7f6da5c123f8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5886] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5883] <... futex resumed>) = 0 [pid 5886] mount(NULL, "./cgroup", NULL, MS_RELATIME, NULL [pid 5883] futex(0x7f6da5c123fc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 ETIMEDOUT (Connection timed out) [pid 5883] exit_group(0) = ? [pid 5882] kill(-5883, SIGKILL) = 0 [pid 5882] kill(5883, SIGKILL) = 0 [pid 5882] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5882] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5882] getdents64(3, 0x555594fe5730 /* 2 entries */, 32768) = 48 [pid 5882] getdents64(3, 0x555594fe5730 /* 0 entries */, 32768) = 0 [pid 5882] close(3) = 0 [ 430.005177][ T31] INFO: task syz-executor446:5886 blocked for more than 143 seconds. [ 430.013415][ T31] Not tainted 6.16.0-rc6-next-20250714-syzkaller #0 [ 430.020656][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 430.029478][ T31] task:syz-executor446 state:D stack:29480 pid:5886 tgid:5883 ppid:5882 task_flags:0x400040 flags:0x00004006 [ 430.041488][ T31] Call Trace: [ 430.045024][ T31] [ 430.047953][ T31] __schedule+0x16f5/0x4d00 [ 430.052462][ T31] ? __lock_acquire+0xab9/0xd20 [ 430.057341][ T31] ? schedule+0x165/0x360 [ 430.061732][ T31] ? __pfx___schedule+0x10/0x10 [ 430.066636][ T31] ? schedule+0x91/0x360 [ 430.070880][ T31] schedule+0x165/0x360 [ 430.075071][ T31] schedule_preempt_disabled+0x13/0x30 [ 430.080531][ T31] rwsem_down_read_slowpath+0x5fd/0x8f0 [ 430.086157][ T31] ? rwsem_down_read_slowpath+0x4b8/0x8f0 [ 430.091892][ T31] ? __pfx_rwsem_down_read_slowpath+0x10/0x10 [ 430.098007][ T31] down_read+0x98/0x2e0 [ 430.102175][ T31] lookup_slow+0x46/0x70 [ 430.106462][ T31] walk_component+0x2d2/0x400 [ 430.111157][ T31] ? path_lookupat+0x156/0x430 [ 430.115959][ T31] path_lookupat+0x163/0x430 [ 430.120557][ T31] filename_lookup+0x212/0x570 [ 430.125369][ T31] ? __pfx_filename_lookup+0x10/0x10 [ 430.130709][ T31] ? strncpy_from_user+0x150/0x290 [ 430.135913][ T31] ? getname_flags+0x1e5/0x540 [ 430.140696][ T31] user_path_at+0x3a/0x60 [ 430.145077][ T31] __se_sys_mount+0x2d3/0x410 [ 430.149780][ T31] ? __pfx___se_sys_mount+0x10/0x10 [ 430.155030][ T31] ? rcu_is_watching+0x15/0xb0 [ 430.159801][ T31] ? __x64_sys_mount+0x20/0xc0 [ 430.164552][ T31] do_syscall_64+0xfa/0x3b0 [ 430.169096][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.175201][ T31] ? __switch_to_asm+0x39/0x70 [ 430.180195][ T31] ? clear_bhb_loop+0x60/0xb0 [ 430.184963][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 430.190883][ T31] RIP: 0033:0x7f6da5b88829 [ 430.195377][ T31] RSP: 002b:00007f6da5b20218 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 430.203792][ T31] RAX: ffffffffffffffda RBX: 00007f6da5c123f8 RCX: 00007f6da5b88829 [ 430.211812][ T31] RDX: 0000000000000000 RSI: 0000200000000040 RDI: 0000000000000000 [ 430.219828][ T31] RBP: 00007f6da5c123f0 R08: 0000000000000000 R09: 0000000000000000 [ 430.227854][ T31] R10: 0000000000200000 R11: 0000000000000246 R12: 00007f6da5bdf07c [ 430.235914][ T31] R13: 0000200000000100 R14: 0000200000000040 R15: 00007ffd552e08e8 [ 430.243887][ T31] [ 430.246958][ T31] [ 430.246958][ T31] Showing all locks held in the system: [ 430.254671][ T31] 1 lock held by khungtaskd/31: [ 430.259553][ T31] #0: ffffffff8e53eca0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 430.269513][ T31] 2 locks held by getty/5614: [ 430.274199][ T31] #0: ffff888033c3e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 430.283994][ T31] #1: ffffc9000332b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 430.294281][ T31] 2 locks held by syz-executor446/5884: [ 430.299930][ T31] #0: ffff88803274c428 (sb_writers#8){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 [ 430.309189][ T31] #1: ffff88806f1c0148 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: path_openat+0x8da/0x3830 [ 430.319445][ T31] 1 lock held by syz-executor446/5886: [ 430.324965][ T31] #0: ffff88806f1c0148 (&type->i_mutex_dir_key#6){++++}-{4:4}, at: lookup_slow+0x46/0x70 [ 430.334975][ T31] [ 430.337289][ T31] ============================================= [ 430.337289][ T31] [ 430.345946][ T31] NMI backtrace for cpu 1 [ 430.345969][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250714-syzkaller #0 PREEMPT(full) [ 430.345986][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 430.345995][ T31] Call Trace: [ 430.346005][ T31] [ 430.346013][ T31] dump_stack_lvl+0x189/0x250 [ 430.346039][ T31] ? __wake_up_klogd+0xd9/0x110 [ 430.346057][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.346075][ T31] ? __pfx__printk+0x10/0x10 [ 430.346100][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 430.346132][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 430.346148][ T31] ? _printk+0xcf/0x120 [ 430.346171][ T31] ? __pfx__printk+0x10/0x10 [ 430.346191][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 430.346210][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 430.346233][ T31] watchdog+0xfee/0x1030 [ 430.346248][ T31] ? watchdog+0x1de/0x1030 [ 430.346270][ T31] kthread+0x70e/0x8a0 [ 430.346288][ T31] ? __pfx_watchdog+0x10/0x10 [ 430.346303][ T31] ? __pfx_kthread+0x10/0x10 [ 430.346319][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 430.346334][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.346350][ T31] ? __pfx_kthread+0x10/0x10 [ 430.346363][ T31] ret_from_fork+0x3f9/0x770 [ 430.346385][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 430.346406][ T31] ? __switch_to_asm+0x39/0x70 [ 430.346419][ T31] ? __switch_to_asm+0x33/0x70 [ 430.346430][ T31] ? __pfx_kthread+0x10/0x10 [ 430.346446][ T31] ret_from_fork_asm+0x1a/0x30 [ 430.346475][ T31] [ 430.346481][ T31] Sending NMI from CPU 1 to CPUs 0: [ 430.502693][ C0] NMI backtrace for cpu 0 [ 430.502709][ C0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.16.0-rc6-next-20250714-syzkaller #0 PREEMPT(full) [ 430.502728][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 430.502738][ C0] RIP: 0010:pv_native_safe_halt+0x13/0x20 [ 430.502759][ C0] Code: d3 de 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 93 aa 29 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 [ 430.502771][ C0] RSP: 0018:ffffffff8e207d80 EFLAGS: 000002c6 [ 430.502786][ C0] RAX: a6b5958bf2936f00 RBX: ffffffff81972dc8 RCX: a6b5958bf2936f00 [ 430.502798][ C0] RDX: 0000000000000001 RSI: ffffffff8dc6695d RDI: ffffffff8c04dfc0 [ 430.502809][ C0] RBP: ffffffff8e207ea8 R08: ffff8880b8632f5b R09: 1ffff110170c65eb [ 430.502821][ C0] R10: dffffc0000000000 R11: ffffed10170c65ec R12: ffffffff8fe3bf30 [ 430.502832][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: 1ffffffff1c52a58 [ 430.502842][ C0] FS: 0000000000000000(0000) GS:ffff8881257b4000(0000) knlGS:0000000000000000 [ 430.502855][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 430.502866][ C0] CR2: 000055ce0cc59168 CR3: 000000000e338000 CR4: 00000000003526f0 [ 430.502881][ C0] Call Trace: [ 430.502890][ C0] [ 430.502895][ C0] default_idle+0x13/0x20 [ 430.502914][ C0] default_idle_call+0x74/0xb0 [ 430.502933][ C0] do_idle+0x1e8/0x510 [ 430.502956][ C0] ? __pfx_do_idle+0x10/0x10 [ 430.502975][ C0] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.502991][ C0] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 430.503006][ C0] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 430.503024][ C0] cpu_startup_entry+0x44/0x60 [ 430.503043][ C0] rest_init+0x2de/0x300 [ 430.503061][ C0] ? __pfx_x86_late_time_init+0x10/0x10 [ 430.503085][ C0] start_kernel+0x47d/0x500 [ 430.503102][ C0] x86_64_start_reservations+0x24/0x30 [ 430.503123][ C0] x86_64_start_kernel+0x143/0x1c0 [ 430.503143][ C0] common_startup_64+0x13e/0x147 [ 430.503166][ C0] [ 430.503664][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 430.503677][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-rc6-next-20250714-syzkaller #0 PREEMPT(full) [ 430.503696][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 430.503706][ T31] Call Trace: [ 430.503713][ T31] [ 430.503720][ T31] dump_stack_lvl+0x99/0x250 [ 430.503746][ T31] ? __asan_memcpy+0x40/0x70 [ 430.503767][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 430.503789][ T31] ? __pfx__printk+0x10/0x10 [ 430.503824][ T31] vpanic+0x281/0x750 [ 430.503846][ T31] ? __pfx_vpanic+0x10/0x10 [ 430.503862][ T31] ? __x2apic_send_IPI_mask+0x1e4/0x260 [ 430.503887][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.503913][ T31] panic+0xb9/0xc0 [ 430.503932][ T31] ? __pfx_panic+0x10/0x10 [ 430.503953][ T31] ? irq_work_queue+0xc3/0x140 [ 430.503975][ T31] ? nmi_trigger_cpumask_backtrace+0x234/0x300 [ 430.504001][ T31] watchdog+0x102d/0x1030 [ 430.504021][ T31] ? watchdog+0x1de/0x1030 [ 430.504045][ T31] kthread+0x70e/0x8a0 [ 430.504064][ T31] ? __pfx_watchdog+0x10/0x10 [ 430.504080][ T31] ? __pfx_kthread+0x10/0x10 [ 430.504104][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 430.504119][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 430.504134][ T31] ? __pfx_kthread+0x10/0x10 [ 430.504150][ T31] ret_from_fork+0x3f9/0x770 [ 430.504173][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 430.504197][ T31] ? __switch_to_asm+0x39/0x70 [ 430.504211][ T31] ? __switch_to_asm+0x33/0x70 [ 430.504225][ T31] ? __pfx_kthread+0x10/0x10 [ 430.504241][ T31] ret_from_fork_asm+0x1a/0x30 [ 430.504270][ T31] [ 430.861322][ T31] Kernel Offset: disabled [ 430.865640][ T31] Rebooting in 86400 seconds..