./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1499121417 <...> Warning: Permanently added '10.128.1.108' (ED25519) to the list of known hosts. [ 91.923394][ T43] cfg80211: failed to load regulatory.db execve("./syz-executor1499121417", ["./syz-executor1499121417"], 0x7ffebf068790 /* 10 vars */) = 0 brk(NULL) = 0x555574341000 brk(0x555574341d00) = 0x555574341d00 arch_prctl(ARCH_SET_FS, 0x555574341380) = 0 set_tid_address(0x555574341650) = 5839 set_robust_list(0x555574341660, 24) = 0 rseq(0x555574341ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1499121417", 4096) = 28 getrandom("\x7a\x58\xac\x17\x1e\x99\x83\x8a", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555574341d00 brk(0x555574362d00) = 0x555574362d00 brk(0x555574363000) = 0x555574363000 mprotect(0x7ff4c7da8000, 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 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5840 attached [pid 5840] set_robust_list(0x555574341660, 24 [pid 5839] <... clone resumed>, child_tidptr=0x555574341650) = 5840 [pid 5840] <... set_robust_list resumed>) = 0 [pid 5840] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5840] getppid() = 0 [pid 5840] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5840] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5840] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5840] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5840] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5840] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5840] unshare(CLONE_NEWNS) = 0 [pid 5840] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5840] unshare(CLONE_NEWIPC) = 0 [pid 5840] unshare(CLONE_NEWCGROUP) = 0 [pid 5840] unshare(CLONE_NEWUTS) = 0 [pid 5840] unshare(CLONE_SYSVSEM) = 0 [pid 5840] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5840] write(3, "16777216", 8) = 8 [pid 5840] close(3) = 0 [pid 5840] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5840] write(3, "536870912", 9) = 9 [pid 5840] close(3) = 0 [pid 5840] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5840] write(3, "1024", 4) = 4 [pid 5840] close(3) = 0 [pid 5840] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5840] write(3, "8192", 4) = 4 [pid 5840] close(3) = 0 [pid 5840] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5840] write(3, "1024", 4) = 4 [pid 5840] close(3) = 0 [pid 5840] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5840] write(3, "1024", 4) = 4 [pid 5840] close(3) = 0 [pid 5840] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5840] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5840] close(3) = 0 [pid 5840] getpid() = 1 [pid 5840] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 5842] set_robust_list(0x555574341660, 24 [pid 5840] <... clone resumed>, child_tidptr=0x555574341650) = 2 [pid 5842] <... set_robust_list resumed>) = 0 [pid 5842] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5842] setpgid(0, 0) = 0 [pid 5842] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5842] write(3, "1000", 4) = 4 [pid 5842] close(3) = 0 [pid 5842] write(1, "executing program\n", 18executing program ) = 18 [pid 5842] creat("./file0", 000) = 3 [pid 5842] pipe2([4, 5], 0) = 0 [pid 5842] 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 5842] dup(5) = 6 [pid 5842] 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 5842] 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 5842] mount(NULL, "./file0", "9p", MS_SYNCHRONOUS|MS_REC, "trans=fd,rfdno=0x0000000000000004,wfdno=0x0000000000000006,cache=mmap,k") = 0 [pid 5842] chmod("./file0", 000) = 0 [pid 5842] open("./file0", O_WRONLY) = -1 EIO (Input/output error) [pid 5842] 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 5842] close(3) = 0 [pid 5842] close(4) = 0 [pid 5842] close(5) = 0 [pid 5842] close(6) = 0 [pid 5842] close(7) = -1 EBADF (Bad file descriptor) [pid 5842] close(8) = -1 EBADF (Bad file descriptor) [pid 5842] close(9) = -1 EBADF (Bad file descriptor) [pid 5842] close(10) = -1 EBADF (Bad file descriptor) [pid 5842] close(11) = -1 EBADF (Bad file descriptor) [pid 5842] close(12) = -1 EBADF (Bad file descriptor) [pid 5842] close(13) = -1 EBADF (Bad file descriptor) [pid 5842] close(14) = -1 EBADF (Bad file descriptor) [pid 5842] close(15) = -1 EBADF (Bad file descriptor) [pid 5842] close(16) = -1 EBADF (Bad file descriptor) [pid 5842] close(17) = -1 EBADF (Bad file descriptor) [pid 5842] close(18) = -1 EBADF (Bad file descriptor) [pid 5842] close(19) = -1 EBADF (Bad file descriptor) [pid 5842] close(20) = -1 EBADF (Bad file descriptor) [pid 5842] close(21) = -1 EBADF (Bad file descriptor) [pid 5842] close(22) = -1 EBADF (Bad file descriptor) [pid 5842] close(23) = -1 EBADF (Bad file descriptor) [pid 5842] close(24) = -1 EBADF (Bad file descriptor) [pid 5842] close(25) = -1 EBADF (Bad file descriptor) [pid 5842] close(26) = -1 EBADF (Bad file descriptor) [pid 5842] close(27) = -1 EBADF (Bad file descriptor) [pid 5842] close(28) = -1 EBADF (Bad file descriptor) [pid 5842] close(29) = -1 EBADF (Bad file descriptor) [pid 5842] exit_group(0) = ? [pid 5842] +++ exited with 0 +++ [pid 5840] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- [pid 5840] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5840] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5843 attached , child_tidptr=0x555574341650) = 3 [pid 5843] set_robust_list(0x555574341660, 24) = 0 [pid 5843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5843] setpgid(0, 0) = 0 [pid 5843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5843] write(3, "1000", 4) = 4 [pid 5843] close(3) = 0 [pid 5843] write(1, "executing program\n", 18executing program ) = 18 [pid 5843] creat("./file0", 000) = -1 EIO (Input/output error) [pid 5843] pipe2([3, 4], 0) = 0 [pid 5843] 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 5843] dup(4) = 5 [pid 5843] 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 5843] 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 5843] mount(NULL, "./file0", "9p", MS_SYNCHRONOUS|MS_REC, "trans=fd,rfdno=0x0000000000000003,wfdno=0x0000000000000005,cache=mmap,k") = 0 [pid 5843] chmod("./file0", 000) = 0 [pid 5843] open("./file0", O_WRONLY) = 6 [pid 5843] 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 5840] kill(-3, SIGKILL) = 0 [pid 5840] kill(3, SIGKILL) = 0 [pid 5840] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5840] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5840] getdents64(3, 0x5555743426f0 /* 2 entries */, 32768) = 48 [pid 5840] getdents64(3, 0x5555743426f0 /* 0 entries */, 32768) = 0 [pid 5840] close(3) = 0 [ 286.476436][ T31] INFO: task syz-executor149:5843 blocked for more than 143 seconds. [ 286.484622][ T31] Not tainted 6.16.0-syzkaller #0 [ 286.490608][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.499530][ T31] task:syz-executor149 state:D stack:25448 pid:5843 tgid:5843 ppid:5840 task_flags:0x400140 flags:0x00004006 [ 286.511655][ T31] Call Trace: [ 286.515016][ T31] [ 286.517965][ T31] __schedule+0x16aa/0x4c90 [ 286.522510][ T31] ? schedule+0x165/0x360 [ 286.526901][ T31] ? __pfx___schedule+0x10/0x10 [ 286.531797][ T31] ? schedule+0x91/0x360 [ 286.536136][ T31] schedule+0x165/0x360 [ 286.540322][ T31] io_schedule+0x81/0xe0 [ 286.544575][ T31] folio_wait_bit_common+0x6b0/0xb90 [ 286.549973][ T31] ? __pfx_folio_wait_bit_common+0x10/0x10 [ 286.555850][ T31] ? __pfx_wake_page_function+0x10/0x10 [ 286.561419][ T31] ? __pfx_filemap_get_folios_tag+0x10/0x10 [ 286.567383][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.572269][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.577126][ T31] folio_wait_writeback+0xb0/0x100 [ 286.582274][ T31] __filemap_fdatawait_range+0x147/0x230 [ 286.588046][ T31] ? __pfx___filemap_fdatawait_range+0x10/0x10 [ 286.594290][ T31] ? wbc_detach_inode+0x137/0x750 [ 286.599412][ T31] file_write_and_wait_range+0x275/0x330 [ 286.605164][ T31] ? __pfx_file_write_and_wait_range+0x10/0x10 [ 286.611431][ T31] v9fs_file_fsync+0xcf/0x1a0 [ 286.616203][ T31] ? __pfx_v9fs_file_fsync+0x10/0x10 [ 286.621547][ T31] ? __up_read+0x280/0x680 [ 286.626057][ T31] ? __pfx___up_read+0x10/0x10 [ 286.630896][ T31] ? netfs_file_write_iter+0x189/0x4a0 [ 286.636426][ T31] netfs_file_write_iter+0x3d8/0x4a0 [ 286.641757][ T31] vfs_write+0x54b/0xa90 [ 286.646129][ T31] ? __pfx_v9fs_file_write_iter+0x10/0x10 [ 286.651893][ T31] ? __pfx_vfs_write+0x10/0x10 [ 286.656738][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.661966][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 286.667262][ T31] ksys_write+0x145/0x250 [ 286.671645][ T31] ? __pfx_ksys_write+0x10/0x10 [ 286.676560][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.681375][ T31] do_syscall_64+0xfa/0x3b0 [ 286.685931][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.691160][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.697305][ T31] ? clear_bhb_loop+0x60/0xb0 [ 286.702017][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.707973][ T31] RIP: 0033:0x7ff4c7d355c9 [ 286.712432][ T31] RSP: 002b:00007fffe0030e78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 286.720922][ T31] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007ff4c7d355c9 [ 286.728970][ T31] RDX: 0000000000007fec RSI: 0000200000000300 RDI: 0000000000000006 [ 286.737034][ T31] RBP: 0030656c69662f2e R08: 0000000074342610 R09: 0000000074342610 [ 286.745093][ T31] R10: 0000000074342610 R11: 0000000000000246 R12: 0000200000000180 [ 286.753111][ T31] R13: 00007ff4c7d7e1bc R14: 00007fffe0030ea0 R15: 00007fffe0030e90 [ 286.761217][ T31] [ 286.764287][ T31] [ 286.764287][ T31] Showing all locks held in the system: [ 286.772114][ T31] 1 lock held by khungtaskd/31: [ 286.777099][ T31] #0: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 286.787080][ T31] 2 locks held by kworker/u8:5/1083: [ 286.792414][ T31] #0: ffff88801a489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 [ 286.804195][ T31] #1: ffffc90003b7fbc0 ((work_completion)(&rreq->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 [ 286.816123][ T31] 2 locks held by getty/5594: [ 286.820812][ T31] #0: ffff88803542a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 286.830661][ T31] #1: ffffc9000333b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 286.840887][ T31] 1 lock held by syz-executor149/5843: [ 286.846397][ T31] #0: ffff888076758428 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x211/0xa90 [ 286.855416][ T31] [ 286.857758][ T31] ============================================= [ 286.857758][ T31] [ 286.866269][ T31] NMI backtrace for cpu 0 [ 286.866293][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-syzkaller #0 PREEMPT(full) [ 286.866316][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 286.866327][ T31] Call Trace: [ 286.866337][ T31] [ 286.866345][ T31] dump_stack_lvl+0x189/0x250 [ 286.866371][ T31] ? __wake_up_klogd+0xd9/0x110 [ 286.866399][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 286.866420][ T31] ? __pfx__printk+0x10/0x10 [ 286.866459][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 286.866493][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 286.866521][ T31] ? _printk+0xcf/0x120 [ 286.866550][ T31] ? __pfx__printk+0x10/0x10 [ 286.866578][ T31] ? debug_show_all_locks+0x2e/0x180 [ 286.866602][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 286.866638][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 286.866674][ T31] watchdog+0xfee/0x1030 [ 286.866710][ T31] ? watchdog+0x1de/0x1030 [ 286.866814][ T31] kthread+0x70e/0x8a0 [ 286.866847][ T31] ? __pfx_watchdog+0x10/0x10 [ 286.866877][ T31] ? __pfx_kthread+0x10/0x10 [ 286.866908][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.866928][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.866949][ T31] ? __pfx_kthread+0x10/0x10 [ 286.866979][ T31] ret_from_fork+0x3fc/0x770 [ 286.867004][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 286.867038][ T31] ? __switch_to_asm+0x39/0x70 [ 286.867065][ T31] ? __switch_to_asm+0x33/0x70 [ 286.867091][ T31] ? __pfx_kthread+0x10/0x10 [ 286.867120][ T31] ret_from_fork_asm+0x1a/0x30 [ 286.867164][ T31] [ 286.867173][ T31] Sending NMI from CPU 0 to CPUs 1: [ 287.027606][ C1] NMI backtrace for cpu 1 [ 287.027624][ C1] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.16.0-syzkaller #0 PREEMPT(full) [ 287.027644][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 287.027655][ C1] RIP: 0010:sched_balance_rq+0x2b1/0x57a0 [ 287.027677][ C1] Code: 89 00 4c 89 bc 24 20 04 00 00 48 81 c3 48 01 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 82 89 89 00 0f b6 1b <48> c7 c0 08 b4 a0 8f 48 c1 e8 03 42 80 3c 28 00 74 0c 48 c7 c7 08 [ 287.027692][ C1] RSP: 0018:ffffc90000a08780 EFLAGS: 00000246 [ 287.027708][ C1] RAX: 1ffff110036dd829 RBX: 0000000000000003 RCX: 0000000000000001 [ 287.027720][ C1] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc90000a08ba0 [ 287.027731][ C1] RBP: ffffc90000a08c38 R08: ffffc90000a08ba7 R09: 0000000000000000 [ 287.027743][ C1] R10: ffffc90000a08b60 R11: fffff52000141175 R12: 1ffff110036dd809 [ 287.027756][ C1] R13: dffffc0000000000 R14: ffff8880b8723e38 R15: ffffc90000a08b98 [ 287.027770][ C1] FS: 0000000000000000(0000) GS:ffff888125d57000(0000) knlGS:0000000000000000 [ 287.027784][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.027796][ C1] CR2: 000055f46ed14168 CR3: 000000000df38000 CR4: 00000000003526f0 [ 287.027811][ C1] Call Trace: [ 287.027819][ C1] [ 287.027830][ C1] ? do_raw_spin_lock+0x121/0x290 [ 287.027856][ C1] ? __pfx_do_raw_spin_lock+0x10/0x10 [ 287.027884][ C1] ? sched_balance_rq+0x4f86/0x57a0 [ 287.027901][ C1] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.027922][ C1] ? __pfx_sched_balance_rq+0x10/0x10 [ 287.027945][ C1] ? enqueue_timer+0x4a1/0x560 [ 287.027996][ C1] ? __lock_acquire+0xab9/0xd20 [ 287.028013][ C1] ? kvm_sched_clock_read+0x11/0x20 [ 287.028029][ C1] ? sched_clock+0x3f/0x60 [ 287.028062][ C1] ? __lock_acquire+0xab9/0xd20 [ 287.028084][ C1] ? sched_clock+0x3f/0x60 [ 287.028112][ C1] sched_balance_domains+0x49f/0x9e0 [ 287.028133][ C1] ? sched_balance_domains+0x121/0x9e0 [ 287.028153][ C1] _nohz_idle_balance+0x59d/0x810 [ 287.028174][ C1] ? sched_clock+0x3f/0x60 [ 287.028203][ C1] ? __pfx__nohz_idle_balance+0x10/0x10 [ 287.028229][ C1] ? sched_balance_softirq+0x13/0x1a0 [ 287.028256][ C1] handle_softirqs+0x283/0x870 [ 287.028277][ C1] ? __irq_exit_rcu+0xca/0x1f0 [ 287.028297][ C1] ? __pfx_handle_softirqs+0x10/0x10 [ 287.028314][ C1] ? sched_clock_cpu+0x74/0x430 [ 287.028331][ C1] ? tick_do_update_jiffies64+0x54/0x310 [ 287.028356][ C1] ? irqtime_account_irq+0xb6/0x1c0 [ 287.028382][ C1] __irq_exit_rcu+0xca/0x1f0 [ 287.028399][ C1] ? __pfx___irq_exit_rcu+0x10/0x10 [ 287.028420][ C1] ? rcu_is_watching+0x15/0xb0 [ 287.028439][ C1] irq_exit_rcu+0x9/0x30 [ 287.028456][ C1] sysvec_call_function_single+0xa3/0xc0 [ 287.028473][ C1] [ 287.028479][ C1] [ 287.028485][ C1] asm_sysvec_call_function_single+0x1a/0x20 [ 287.028504][ C1] RIP: 0010:pv_native_safe_halt+0x13/0x20 [ 287.028522][ C1] Code: 53 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 d3 ad 21 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 [ 287.028536][ C1] RSP: 0018:ffffc90000197de0 EFLAGS: 000002c2 [ 287.028550][ C1] RAX: d99c2d48826b7800 RBX: ffffffff81976918 RCX: d99c2d48826b7800 [ 287.028563][ C1] RDX: 0000000000000001 RSI: ffffffff8d982fba RDI: ffffffff8be1ba40 [ 287.028588][ C1] RBP: ffffc90000197f20 R08: ffff8880b8732f5b R09: 1ffff110170e65eb [ 287.028601][ C1] R10: dffffc0000000000 R11: ffffed10170e65ec R12: ffffffff8fa0b3f0 [ 287.028614][ C1] R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff11003ad3b40 [ 287.028627][ C1] ? do_idle+0x1e8/0x510 [ 287.028651][ C1] default_idle+0x13/0x20 [ 287.028671][ C1] default_idle_call+0x74/0xb0 [ 287.028711][ C1] do_idle+0x1e8/0x510 [ 287.028734][ C1] ? __pfx_do_idle+0x10/0x10 [ 287.028763][ C1] cpu_startup_entry+0x44/0x60 [ 287.028782][ C1] start_secondary+0x101/0x110 [ 287.028809][ C1] common_startup_64+0x13e/0x147 [ 287.028842][ C1] [ 287.028850][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.244 msecs [ 287.035994][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 287.036024][ T31] CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-syzkaller #0 PREEMPT(full) [ 287.036054][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 287.036068][ T31] Call Trace: [ 287.036080][ T31] [ 287.036091][ T31] dump_stack_lvl+0x99/0x250 [ 287.036123][ T31] ? __asan_memcpy+0x40/0x70 [ 287.036161][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.036191][ T31] ? __pfx__printk+0x10/0x10 [ 287.036241][ T31] panic+0x2db/0x790 [ 287.036274][ T31] ? __pfx_panic+0x10/0x10 [ 287.036300][ T31] ? nmi_backtrace_stall_check+0x433/0x440 [ 287.036334][ T31] ? preempt_schedule_thunk+0x16/0x30 [ 287.036372][ T31] ? nmi_trigger_cpumask_backtrace+0x2b6/0x300 [ 287.036419][ T31] watchdog+0x102d/0x1030 [ 287.036460][ T31] ? watchdog+0x1de/0x1030 [ 287.036505][ T31] kthread+0x70e/0x8a0 [ 287.036543][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.036578][ T31] ? __pfx_kthread+0x10/0x10 [ 287.036613][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.036637][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.036660][ T31] ? __pfx_kthread+0x10/0x10 [ 287.036694][ T31] ret_from_fork+0x3fc/0x770 [ 287.036729][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.036761][ T31] ? __switch_to_asm+0x39/0x70 [ 287.036791][ T31] ? __switch_to_asm+0x33/0x70 [ 287.036820][ T31] ? __pfx_kthread+0x10/0x10 [ 287.036855][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.036903][ T31] [ 287.572174][ T31] Kernel Offset: disabled [ 287.576523][ T31] Rebooting in 86400 seconds..