./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1104925848 <...> Warning: Permanently added '10.128.1.232' (ED25519) to the list of known hosts. execve("./syz-executor1104925848", ["./syz-executor1104925848"], 0x7fff978de3f0 /* 10 vars */) = 0 brk(NULL) = 0x555570f8c000 brk(0x555570f8cd00) = 0x555570f8cd00 arch_prctl(ARCH_SET_FS, 0x555570f8c380) = 0 set_tid_address(0x555570f8c650) = 5847 set_robust_list(0x555570f8c660, 24) = 0 rseq(0x555570f8cca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1104925848", 4096) = 28 getrandom("\x2e\x45\x9b\x41\x89\x31\x33\xdb", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555570f8cd00 brk(0x555570fadd00) = 0x555570fadd00 brk(0x555570fae000) = 0x555570fae000 mprotect(0x7f7e203c1000, 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 5848 attached , child_tidptr=0x555570f8c650) = 5848 [pid 5848] set_robust_list(0x555570f8c660, 24) = 0 [pid 5848] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5848] setpgid(0, 0) = 0 [pid 5848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5848] write(3, "1000", 4) = 4 [pid 5848] close(3) = 0 executing program [pid 5848] write(1, "executing program\n", 18) = 18 [pid 5848] creat("./file0", 000) = 3 [pid 5848] pipe2([4, 5], 0) = 0 [pid 5848] 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 5848] dup(5) = 6 [pid 5848] 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 5848] 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 5848] mount(NULL, "./file0", "9p", MS_SYNCHRONOUS|MS_REC, "trans=fd,rfdno=0x0000000000000004,wfdno=0x0000000000000006,cache=mmap,k") = 0 [pid 5848] chmod("./file0", 000) = 0 [pid 5848] open("./file0", O_WRONLY) = 7 [ 86.876240][ T981] cfg80211: failed to load regulatory.db [pid 5848] write(7, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\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 5847] kill(-5848, SIGKILL) = 0 [pid 5847] kill(5848, SIGKILL) = 0 [pid 5847] openat(AT_FDCWD, "/sys/fs/fuse/connections", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 [pid 5847] newfstatat(3, "", {st_mode=S_IFDIR|0755, st_size=0, ...}, AT_EMPTY_PATH) = 0 [pid 5847] getdents64(3, 0x555570f8d6f0 /* 2 entries */, 32768) = 48 [pid 5847] getdents64(3, 0x555570f8d6f0 /* 0 entries */, 32768) = 0 [pid 5847] close(3) = 0 [ 286.556244][ T31] INFO: task syz-executor110:5848 blocked for more than 143 seconds. [ 286.564503][ T31] Not tainted 6.16.0-syzkaller #0 [ 286.570047][ T31] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 286.578840][ T31] task:syz-executor110 state:D stack:24664 pid:5848 tgid:5848 ppid:5847 task_flags:0x400140 flags:0x00004006 [ 286.590944][ T31] Call Trace: [ 286.594326][ T31] [ 286.597275][ T31] __schedule+0x16aa/0x4c90 [ 286.601813][ T31] ? schedule+0x165/0x360 [ 286.606213][ T31] ? __pfx___schedule+0x10/0x10 [ 286.611084][ T31] ? schedule+0x91/0x360 [ 286.615394][ T31] schedule+0x165/0x360 [ 286.619565][ T31] io_schedule+0x81/0xe0 [ 286.623809][ T31] folio_wait_bit_common+0x6b0/0xb90 [ 286.629186][ T31] ? __pfx_folio_wait_bit_common+0x10/0x10 [ 286.635076][ T31] ? __pfx_wake_page_function+0x10/0x10 [ 286.640651][ T31] ? __pfx_filemap_get_folios_tag+0x10/0x10 [ 286.646587][ T31] ? __lock_acquire+0xab9/0xd20 [ 286.651463][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.656309][ T31] folio_wait_writeback+0xb0/0x100 [ 286.661961][ T31] __filemap_fdatawait_range+0x147/0x230 [ 286.667675][ T31] ? __pfx___filemap_fdatawait_range+0x10/0x10 [ 286.673869][ T31] ? wbc_detach_inode+0x137/0x750 [ 286.678970][ T31] file_write_and_wait_range+0x275/0x330 [ 286.684664][ T31] ? __pfx_file_write_and_wait_range+0x10/0x10 [ 286.690853][ T31] v9fs_file_fsync+0xcf/0x1a0 [ 286.695625][ T31] ? __pfx_v9fs_file_fsync+0x10/0x10 [ 286.700951][ T31] ? __up_read+0x280/0x680 [ 286.705438][ T31] ? __pfx___up_read+0x10/0x10 [ 286.710224][ T31] ? netfs_file_write_iter+0x189/0x4a0 [ 286.715796][ T31] netfs_file_write_iter+0x3d8/0x4a0 [ 286.721116][ T31] vfs_write+0x54b/0xa90 [ 286.725451][ T31] ? __pfx_v9fs_file_write_iter+0x10/0x10 [ 286.731193][ T31] ? __pfx_vfs_write+0x10/0x10 [ 286.736045][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.741267][ T31] ? _raw_spin_unlock_irq+0x2e/0x50 [ 286.746530][ T31] ksys_write+0x145/0x250 [ 286.750871][ T31] ? __pfx_ksys_write+0x10/0x10 [ 286.755782][ T31] ? rcu_is_watching+0x15/0xb0 [ 286.760562][ T31] do_syscall_64+0xfa/0x3b0 [ 286.765116][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.770324][ T31] ? entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.776456][ T31] ? clear_bhb_loop+0x60/0xb0 [ 286.781182][ T31] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 286.787138][ T31] RIP: 0033:0x7f7e2034def9 [ 286.791571][ T31] RSP: 002b:00007fff1345bf28 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 286.800116][ T31] RAX: ffffffffffffffda RBX: 0000200000000140 RCX: 00007f7e2034def9 [ 286.808163][ T31] RDX: 0000000000007fec RSI: 0000200000000300 RDI: 0000000000000007 [ 286.816206][ T31] RBP: 0030656c69662f2e R08: 0000000000000006 R09: 0000000000000006 [ 286.824227][ T31] R10: 0000000000000006 R11: 0000000000000246 R12: 0000200000000180 [ 286.832194][ T31] R13: 00007f7e2039704e R14: 0000000000000001 R15: 0000000000000001 [ 286.840704][ T31] [ 286.843756][ T31] [ 286.843756][ T31] Showing all locks held in the system: [ 286.851534][ T31] 1 lock held by khungtaskd/31: [ 286.856492][ T31] #0: ffffffff8e13f0e0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 [ 286.866431][ T31] 2 locks held by kworker/u8:8/3531: [ 286.871732][ T31] #0: ffff88801a489148 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_scheduled_works+0x9b4/0x17b0 [ 286.883492][ T31] #1: ffffc9000c957bc0 ((work_completion)(&rreq->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ef/0x17b0 [ 286.895351][ T31] 2 locks held by getty/5600: [ 286.900039][ T31] #0: ffff888034c120a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 [ 286.909901][ T31] #1: ffffc9000333b2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 [ 286.920101][ T31] 1 lock held by syz-executor110/5848: [ 286.925593][ T31] #0: ffff888023720428 (sb_writers#8){.+.+}-{0:0}, at: vfs_write+0x211/0xa90 [ 286.934564][ T31] [ 286.936877][ T31] ============================================= [ 286.936877][ T31] [ 286.945345][ T31] NMI backtrace for cpu 1 [ 286.945366][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-syzkaller #0 PREEMPT(full) [ 286.945387][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 286.945396][ T31] Call Trace: [ 286.945403][ T31] [ 286.945410][ T31] dump_stack_lvl+0x189/0x250 [ 286.945430][ T31] ? __wake_up_klogd+0xd9/0x110 [ 286.945454][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 286.945473][ T31] ? __pfx__printk+0x10/0x10 [ 286.945504][ T31] nmi_cpu_backtrace+0x39e/0x3d0 [ 286.945532][ T31] ? __pfx_nmi_cpu_backtrace+0x10/0x10 [ 286.945551][ T31] ? _printk+0xcf/0x120 [ 286.945572][ T31] ? __pfx__printk+0x10/0x10 [ 286.945593][ T31] ? debug_show_all_locks+0x2e/0x180 [ 286.945610][ T31] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10 [ 286.945636][ T31] nmi_trigger_cpumask_backtrace+0x17a/0x300 [ 286.945663][ T31] watchdog+0xfee/0x1030 [ 286.945708][ T31] ? watchdog+0x1de/0x1030 [ 286.945743][ T31] kthread+0x70e/0x8a0 [ 286.945769][ T31] ? __pfx_watchdog+0x10/0x10 [ 286.945792][ T31] ? __pfx_kthread+0x10/0x10 [ 286.945817][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 286.945835][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 286.945852][ T31] ? __pfx_kthread+0x10/0x10 [ 286.945876][ T31] ret_from_fork+0x3fc/0x770 [ 286.945898][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 286.945922][ T31] ? __switch_to_asm+0x39/0x70 [ 286.945942][ T31] ? __switch_to_asm+0x33/0x70 [ 286.945963][ T31] ? __pfx_kthread+0x10/0x10 [ 286.945987][ T31] ret_from_fork_asm+0x1a/0x30 [ 286.946019][ T31] [ 286.946026][ T31] Sending NMI from CPU 1 to CPUs 0: [ 287.106271][ C0] NMI backtrace for cpu 0 [ 287.106289][ C0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted 6.16.0-syzkaller #0 PREEMPT(full) [ 287.106308][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 287.106318][ C0] RIP: 0010:pv_native_safe_halt+0x13/0x20 [ 287.106340][ C0] 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 [ 287.106354][ C0] RSP: 0018:ffffffff8de07d80 EFLAGS: 000002c2 [ 287.106369][ C0] RAX: 7109c15a2ea2c800 RBX: ffffffff81976918 RCX: 7109c15a2ea2c800 [ 287.106382][ C0] RDX: 0000000000000001 RSI: ffffffff8d982fba RDI: ffffffff8be1ba40 [ 287.106394][ C0] RBP: ffffffff8de07ea8 R08: ffff8880b8632f5b R09: 1ffff110170c65eb [ 287.106406][ C0] R10: dffffc0000000000 R11: ffffed10170c65ec R12: ffffffff8fa0b3f0 [ 287.106418][ C0] R13: 0000000000000000 R14: 0000000000000000 R15: 1ffffffff1bd2a50 [ 287.106429][ C0] FS: 0000000000000000(0000) GS:ffff888125c57000(0000) knlGS:0000000000000000 [ 287.106442][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 287.106453][ C0] CR2: 00005619f6cc1660 CR3: 000000000df38000 CR4: 00000000003526f0 [ 287.106468][ C0] Call Trace: [ 287.106477][ C0] [ 287.106483][ C0] default_idle+0x13/0x20 [ 287.106503][ C0] default_idle_call+0x74/0xb0 [ 287.106523][ C0] do_idle+0x1e8/0x510 [ 287.106545][ C0] ? __pfx_do_idle+0x10/0x10 [ 287.106561][ C0] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.106578][ C0] ? _raw_spin_unlock_irqrestore+0xad/0x110 [ 287.106603][ C0] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10 [ 287.106630][ C0] cpu_startup_entry+0x44/0x60 [ 287.106648][ C0] rest_init+0x2de/0x300 [ 287.106667][ C0] ? __pfx_x86_late_time_init+0x10/0x10 [ 287.106705][ C0] start_kernel+0x47d/0x500 [ 287.106726][ C0] x86_64_start_reservations+0x24/0x30 [ 287.106749][ C0] x86_64_start_kernel+0x143/0x1c0 [ 287.106770][ C0] common_startup_64+0x13e/0x147 [ 287.106798][ C0] [ 287.107246][ T31] Kernel panic - not syncing: hung_task: blocked tasks [ 287.107268][ T31] CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.16.0-syzkaller #0 PREEMPT(full) [ 287.107289][ T31] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 287.107300][ T31] Call Trace: [ 287.107309][ T31] [ 287.107317][ T31] dump_stack_lvl+0x99/0x250 [ 287.107340][ T31] ? __asan_memcpy+0x40/0x70 [ 287.107367][ T31] ? __pfx_dump_stack_lvl+0x10/0x10 [ 287.107388][ T31] ? __pfx__printk+0x10/0x10 [ 287.107424][ T31] panic+0x2db/0x790 [ 287.107449][ T31] ? __pfx_panic+0x10/0x10 [ 287.107469][ T31] ? nmi_backtrace_stall_check+0x433/0x440 [ 287.107495][ T31] ? irq_work_queue+0xc3/0x140 [ 287.107531][ T31] watchdog+0x102d/0x1030 [ 287.107560][ T31] ? watchdog+0x1de/0x1030 [ 287.107594][ T31] kthread+0x70e/0x8a0 [ 287.107622][ T31] ? __pfx_watchdog+0x10/0x10 [ 287.107648][ T31] ? __pfx_kthread+0x10/0x10 [ 287.107674][ T31] ? _raw_spin_unlock_irq+0x23/0x50 [ 287.107692][ T31] ? lockdep_hardirqs_on+0x9c/0x150 [ 287.107709][ T31] ? __pfx_kthread+0x10/0x10 [ 287.107734][ T31] ret_from_fork+0x3fc/0x770 [ 287.107761][ T31] ? __pfx_ret_from_fork+0x10/0x10 [ 287.107785][ T31] ? __switch_to_asm+0x39/0x70 [ 287.107807][ T31] ? __switch_to_asm+0x33/0x70 [ 287.107828][ T31] ? __pfx_kthread+0x10/0x10 [ 287.107854][ T31] ret_from_fork_asm+0x1a/0x30 [ 287.107892][ T31] [ 287.442583][ T31] Kernel Offset: disabled [ 287.446895][ T31] Rebooting in 86400 seconds..