ci2-upstream-fs/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-upstream-fs/syz-executor994619372 <...> Warning: Permanently added '10.128.0.35' (ED25519) to the list of known hosts. execve("ci2-upstream-fs/syz-executor994619372", ["ci2-upstream-fs/syz-executor994619372"], 0x7ffd18326230 /* 10 vars */) = 0 brk(NULL) = 0x555577d4f000 brk(0x555577d4fd80) = 0x555577d4fd80 arch_prctl(ARCH_SET_FS, 0x555577d4f400) = 0 set_tid_address(0x555577d4f6d0) = 5658 set_robust_list(0x555577d4f6e0, 24) = 0 rseq({cpu_id_start=0, cpu_id=RSEQ_CPU_ID_UNINITIALIZED, rseq_cs=NULL, flags=0, node_id=0, mm_cid=0, slice_ctrl={request=0, granted=0, __reserved=0}, __reserved=0}, 33, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlinkat(AT_FDCWD, "/proc/self/exe", "/root/ci2-upstream-fs/syz-executor994619372", 4096) = 43 getrandom("\x8f\x42\x16\xec\x53\x83\x01\x09", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555577d4fd80 brk(0x555577d70d80) = 0x555577d70d80 brk(0x555577d71000) = 0x555577d71000 mprotect(0x7f7b7877a000, 20480, 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 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5659 attached , child_tidptr=0x555577d4f6d0) = 5659 [pid 5659] set_robust_list(0x555577d4f6e0, 24 [pid 5658] rt_sigprocmask(SIG_SETMASK, [] [pid 5659] <... set_robust_list resumed>) = 0 [pid 5658] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5658] openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC [pid 5659] rt_sigprocmask(SIG_SETMASK, [] [pid 5658] <... openat resumed>) = 3 [pid 5659] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5658] write(3, "10000000000", 11) = 11 [pid 5658] close(3) = 0 [pid 5658] openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "20", 2) = 2 [pid 5658] close(3) = 0 [pid 5658] openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "1", 1) = 1 [pid 5658] close(3) = 0 [pid 5658] openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "0", 1) = 1 [pid 5658] close(3) = 0 [pid 5658] openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "0", 1) = 1 [pid 5658] close(3) = 0 [pid 5658] openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "1", 1) = 1 [pid 5658] close(3) = 0 [pid 5658] openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "100", 3) = 3 [pid 5658] close(3) = 0 [pid 5658] openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "0", 1) = 1 [pid 5658] close(3) = 0 [pid 5658] openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "0", 1) = 1 [pid 5658] close(3) = 0 [pid 5658] openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "7 4 1 3", 7) = 7 [pid 5658] close(3) = 0 [pid 5658] openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "1", 1) = 1 [pid 5658] close(3) = 0 [pid 5658] openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "1", 1) = 1 [pid 5658] close(3) = 0 [pid 5658] openat(AT_FDCWD, "/sys/kernel/debug/failslab/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "Y", 1) = 1 [pid 5658] close(3) = 0 [pid 5658] openat(AT_FDCWD, "/sys/kernel/debug/fail_page_alloc/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "Y", 1) = 1 [pid 5658] close(3) = 0 [pid 5658] openat(AT_FDCWD, "/sys/kernel/debug/fail_futex/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "Y", 1) = 1 [pid 5658] close(3) = 0 [pid 5658] openat(AT_FDCWD, "/sys/kernel/debug/fail_usercopy/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "Y", 1) = 1 [pid 5658] close(3) = 0 [pid 5658] openat(AT_FDCWD, "/sys/kernel/debug/fail_make_request/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "Y", 1) = 1 [pid 5658] close(3) = 0 [pid 5658] openat(AT_FDCWD, "/sys/kernel/debug/fail_io_timeout/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "Y", 1) = 1 [pid 5658] close(3) = 0 [pid 5658] openat(AT_FDCWD, "/sys/kernel/debug/fail_iommufd/task-filter", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "Y", 1) = 1 [pid 5658] close(3) = 0 [pid 5658] openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "0", 1) = 1 [pid 5658] close(3) = 0 [pid 5658] openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 [pid 5658] write(3, "5659", 4) = 4 [pid 5658] close(3) = 0 [pid 5658] kill(5659, SIGKILL) = 0 [pid 5659] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5659, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5661 attached [pid 5661] set_robust_list(0x555577d4f6e0, 24 [pid 5658] <... clone resumed>, child_tidptr=0x555577d4f6d0) = 5661 [pid 5658] rt_sigprocmask(SIG_SETMASK, [] [pid 5661] <... set_robust_list resumed>) = 0 [pid 5658] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5661] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5661] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5661] setpgid(0, 0) = 0 [pid 5661] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5661] write(3, "1000", 4) = 4 [pid 5661] close(3) = 0 executing program [pid 5661] write(1, "executing program\n", 18) = 18 [pid 5661] io_uring_setup(3837, {flags=IORING_SETUP_SQPOLL, sq_thread_cpu=0x3, sq_thread_idle=85, sq_entries=4096, cq_entries=8192, features=IORING_FEAT_SINGLE_MMAP|IORING_FEAT_NODROP|IORING_FEAT_SUBMIT_STABLE|IORING_FEAT_RW_CUR_POS|IORING_FEAT_CUR_PERSONALITY|IORING_FEAT_FAST_POLL|IORING_FEAT_POLL_32BITS|IORING_FEAT_SQPOLL_NONFIXED|IORING_FEAT_EXT_ARG|IORING_FEAT_NATIVE_WORKERS|IORING_FEAT_RSRC_TAGS|IORING_FEAT_CQE_SKIP|IORING_FEAT_LINKED_FILE|IORING_FEAT_REG_REG_RING|IORING_FEAT_RECVSEND_BUNDLE|IORING_FEAT_MIN_TIMEOUT|IORING_FEAT_RW_ATTR|IORING_FEAT_NO_IOWAIT, sq_off={head=0, tail=4, ring_mask=16, ring_entries=24, flags=36, dropped=32, array=131136, user_addr=0}, cq_off={head=8, tail=12, ring_mask=20, ring_entries=28, overflow=44, cqes=64, flags=40, user_addr=0}}) = 3 [pid 5661] mmap(NULL, 147520, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 3, 0) = 0x7f7b786a1000 [pid 5661] mmap(NULL, 262144, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 3, 0x10000000) = 0x7f7b78661000 [pid 5661] exit_group(0) = ? [pid 5661] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5661, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci2-upstream-fs/strace-static-x86_64: Process 5663 attached , child_tidptr=0x555577d4f6d0) = 5663 [pid 5658] rt_sigprocmask(SIG_SETMASK, [] [pid 5663] set_robust_list(0x555577d4f6e0, 24 [pid 5658] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5663] <... set_robust_list resumed>) = 0 [pid 5663] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5663] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5663] setpgid(0, 0) = 0 [pid 5663] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5663] write(3, "1000", 4) = 4 [pid 5663] close(3) = 0 [pid 5663] write(1, "executing program\n", 18) = 18 executing program [pid 5663] io_uring_setup(3837, {flags=IORING_SETUP_SQPOLL, sq_thread_cpu=0x3, sq_thread_idle=85, sq_entries=4096, cq_entries=8192, features=IORING_FEAT_SINGLE_MMAP|IORING_FEAT_NODROP|IORING_FEAT_SUBMIT_STABLE|IORING_FEAT_RW_CUR_POS|IORING_FEAT_CUR_PERSONALITY|IORING_FEAT_FAST_POLL|IORING_FEAT_POLL_32BITS|IORING_FEAT_SQPOLL_NONFIXED|IORING_FEAT_EXT_ARG|IORING_FEAT_NATIVE_WORKERS|IORING_FEAT_RSRC_TAGS|IORING_FEAT_CQE_SKIP|IORING_FEAT_LINKED_FILE|IORING_FEAT_REG_REG_RING|IORING_FEAT_RECVSEND_BUNDLE|IORING_FEAT_MIN_TIMEOUT|IORING_FEAT_RW_ATTR|IORING_FEAT_NO_IOWAIT, sq_off={head=0, tail=4, ring_mask=16, ring_entries=24, flags=36, dropped=32, array=131136, user_addr=0}, cq_off={head=8, tail=12, ring_mask=20, ring_entries=28, overflow=44, cqes=64, flags=40, user_addr=0}}) = 3 [pid 5663] mmap(NULL, 147520, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 3, 0) = 0x7f7b786a1000 [pid 5663] mmap(NULL, 262144, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 3, 0x10000000) = 0x7f7b78661000 [pid 5663] exit_group(0) = ? [pid 5663] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5663, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [ 81.937514][ T3000] ------------[ cut here ]------------ [ 81.937527][ T3000] test_bit(IO_SQ_THREAD_SHOULD_STOP, &sqd->state) [ 81.937532][ T3000] WARNING: io_uring/sqpoll.c:88 at io_sq_thread_stop+0x17e/0x1a0, CPU#1: kworker/u8:40/3000 [ 81.959560][ T3000] Modules linked in: [ 81.963461][ T3000] CPU: 1 UID: 0 PID: 3000 Comm: kworker/u8:40 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 81.973550][ T3000] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026 [ 81.983628][ T3000] Workqueue: iou_exit io_ring_exit_work [ 81.989200][ T3000] RIP: 0010:io_sq_thread_stop+0x17e/0x1a0 [ 81.994907][ T3000] Code: c6 05 cb df e9 0b 01 48 c7 c7 a0 da ea 8b be 26 00 00 00 48 c7 c2 e0 da ea 8b e8 dd 05 ce fc e9 4f ff ff ff e8 e3 d8 f2 fc 90 <0f> 0b 90 e9 e1 fe ff ff e8 d5 d8 f2 fc 90 0f 0b 90 e9 6e ff ff ff [ 82.014542][ T3000] RSP: 0018:ffffc9000f21f890 EFLAGS: 00010293 [ 82.020618][ T3000] RAX: ffffffff84d5061d RBX: ffff888031721400 RCX: ffff8880340b1f40 [ 82.028607][ T3000] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 82.036562][ T3000] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 82.044551][ T3000] R10: dffffc0000000000 R11: ffffed10062e42ab R12: 0000000000000001 [ 82.052541][ T3000] R13: 0000000000000000 R14: ffff888031721550 R15: dffffc0000000000 [ 82.060518][ T3000] FS: 0000000000000000(0000) GS:ffff888124818000(0000) knlGS:0000000000000000 [ 82.069458][ T3000] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.076022][ T3000] CR2: 00007f7b7874ea7c CR3: 000000002c936000 CR4: 00000000003526f0 [ 82.084001][ T3000] Call Trace: [ 82.087297][ T3000] [ 82.090230][ T3000] io_put_sq_data+0x8a/0x150 [ 82.094803][ T3000] io_sq_thread_finish+0x1fd/0x240 [ 82.099922][ T3000] io_ring_ctx_free+0x2d/0x5e0 [ 82.104669][ T3000] io_ring_exit_work+0x5b1/0x640 [ 82.109622][ T3000] ? __pfx_io_ring_exit_work+0x10/0x10 [ 82.115088][ T3000] ? __pfx_io_tctx_exit_cb+0x10/0x10 [ 82.120397][ T3000] ? rcu_is_watching+0x16/0xb0 [ 82.125147][ T3000] ? process_scheduled_works+0x97a/0x1630 [ 82.130874][ T3000] process_scheduled_works+0xc3d/0x1630 [ 82.136440][ T3000] ? __pfx_process_scheduled_works+0x10/0x10 [ 82.142430][ T3000] ? assign_work+0x3cf/0x5d0 [ 82.147035][ T3000] worker_thread+0xa47/0xfb0 [ 82.151646][ T3000] ? __kthread_parkme+0x71/0x1f0 [ 82.156566][ T3000] kthread+0x38b/0x470 [ 82.160667][ T3000] ? __pfx_worker_thread+0x10/0x10 [ 82.165757][ T3000] ? __pfx_kthread+0x10/0x10 [ 82.170358][ T3000] ret_from_fork+0x514/0xb70 [ 82.174935][ T3000] ? __pfx_ret_from_fork+0x10/0x10 [ 82.180060][ T3000] ? __switch_to+0xc78/0x1410 [ 82.184716][ T3000] ? __pfx_kthread+0x10/0x10 [ 82.189312][ T3000] ret_from_fork_asm+0x1a/0x30 [ 82.194067][ T3000] [ 82.197112][ T3000] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 82.204385][ T3000] CPU: 1 UID: 0 PID: 3000 Comm: kworker/u8:40 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 82.214420][ T3000] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026 [ 82.224468][ T3000] Workqueue: iou_exit io_ring_exit_work [ 82.230000][ T3000] Call Trace: [ 82.233259][ T3000] [ 82.236171][ T3000] vpanic+0x26f/0x710 [ 82.240134][ T3000] panic+0xc5/0xd0 [ 82.243836][ T3000] ? __pfx_panic+0x10/0x10 [ 82.248231][ T3000] ? ret_from_fork_asm+0x1a/0x30 [ 82.253166][ T3000] __warn+0x315/0x4c0 [ 82.257128][ T3000] ? io_sq_thread_stop+0x17e/0x1a0 [ 82.262237][ T3000] ? io_sq_thread_stop+0x17e/0x1a0 [ 82.267339][ T3000] __report_bug+0x276/0x570 [ 82.271850][ T3000] ? io_sq_thread_stop+0x17e/0x1a0 [ 82.276945][ T3000] ? __pfx___report_bug+0x10/0x10 [ 82.281958][ T3000] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 82.287749][ T3000] ? rt_mutex_slowunlock+0x4ee/0xa30 [ 82.293022][ T3000] ? io_sq_thread_stop+0x17e/0x1a0 [ 82.298117][ T3000] report_bug+0x16b/0x220 [ 82.302433][ T3000] ? io_sq_thread_stop+0x17e/0x1a0 [ 82.307524][ T3000] ? io_sq_thread_stop+0x180/0x1a0 [ 82.312621][ T3000] handle_bug+0x9c/0x200 [ 82.316851][ T3000] exc_invalid_op+0x1a/0x50 [ 82.321336][ T3000] asm_exc_invalid_op+0x1a/0x20 [ 82.326171][ T3000] RIP: 0010:io_sq_thread_stop+0x17e/0x1a0 [ 82.331878][ T3000] Code: c6 05 cb df e9 0b 01 48 c7 c7 a0 da ea 8b be 26 00 00 00 48 c7 c2 e0 da ea 8b e8 dd 05 ce fc e9 4f ff ff ff e8 e3 d8 f2 fc 90 <0f> 0b 90 e9 e1 fe ff ff e8 d5 d8 f2 fc 90 0f 0b 90 e9 6e ff ff ff [ 82.351492][ T3000] RSP: 0018:ffffc9000f21f890 EFLAGS: 00010293 [ 82.357669][ T3000] RAX: ffffffff84d5061d RBX: ffff888031721400 RCX: ffff8880340b1f40 [ 82.365625][ T3000] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 82.373597][ T3000] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 82.381570][ T3000] R10: dffffc0000000000 R11: ffffed10062e42ab R12: 0000000000000001 [ 82.389539][ T3000] R13: 0000000000000000 R14: ffff888031721550 R15: dffffc0000000000 [ 82.397543][ T3000] ? io_sq_thread_stop+0x17d/0x1a0 [ 82.402673][ T3000] io_put_sq_data+0x8a/0x150 [ 82.407279][ T3000] io_sq_thread_finish+0x1fd/0x240 [ 82.412402][ T3000] io_ring_ctx_free+0x2d/0x5e0 [ 82.417180][ T3000] io_ring_exit_work+0x5b1/0x640 [ 82.422102][ T3000] ? __pfx_io_ring_exit_work+0x10/0x10 [ 82.427542][ T3000] ? __pfx_io_tctx_exit_cb+0x10/0x10 [ 82.432812][ T3000] ? rcu_is_watching+0x16/0xb0 [ 82.437557][ T3000] ? process_scheduled_works+0x97a/0x1630 [ 82.443257][ T3000] process_scheduled_works+0xc3d/0x1630 [ 82.448797][ T3000] ? __pfx_process_scheduled_works+0x10/0x10 [ 82.454761][ T3000] ? assign_work+0x3cf/0x5d0 [ 82.459337][ T3000] worker_thread+0xa47/0xfb0 [ 82.463916][ T3000] ? __kthread_parkme+0x71/0x1f0 [ 82.468860][ T3000] kthread+0x38b/0x470 [ 82.472912][ T3000] ? __pfx_worker_thread+0x10/0x10 [ 82.478003][ T3000] ? __pfx_kthread+0x10/0x10 [ 82.482573][ T3000] ret_from_fork+0x514/0xb70 [ 82.487147][ T3000] ? __pfx_ret_from_fork+0x10/0x10 [ 82.492257][ T3000] ? __switch_to+0xc78/0x1410 [ 82.496929][ T3000] ? __pfx_kthread+0x10/0x10 [ 82.501513][ T3000] ret_from_fork_asm+0x1a/0x30 [ 82.506269][ T3000] [ 82.509439][ T3000] Kernel Offset: disabled [ 82.513817][ T3000] Rebooting in 86400 seconds..