ci2-upstream-fs/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci2-upstream-fs/syz-executor1499217279 <...> [ 86.857862][ T10] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.1.5' (ED25519) to the list of known hosts. execve("ci2-upstream-fs/syz-executor1499217279", ["ci2-upstream-fs/syz-executor1499217279"], 0x7ffe9e360330 /* 10 vars */) = 0 brk(NULL) = 0x555575668000 brk(0x555575668d80) = 0x555575668d80 arch_prctl(ARCH_SET_FS, 0x555575668400) = 0 set_tid_address(0x5555756686d0) = 5634 set_robust_list(0x5555756686e0, 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-executor1499217279", 4096) = 44 getrandom("\xaf\x38\x9c\xc0\x67\x60\x66\xa8", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555575668d80 brk(0x555575689d80) = 0x555575689d80 brk(0x55557568a000) = 0x55557568a000 mprotect(0x7f592a86d000, 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 5635 attached , child_tidptr=0x5555756686d0) = 5635 [pid 5634] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5635] set_robust_list(0x5555756686e0, 24) = 0 [pid 5635] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5635] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5635] setpgid(0, 0) = 0 [pid 5635] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5635] write(3, "1000", 4) = 4 [pid 5635] close(3) = 0 [pid 5635] write(1, "executing program\n", 18) = 18 executing program [pid 5635] io_uring_setup(1141, {flags=IORING_SETUP_SQPOLL|IORING_SETUP_SQ_AFF|IORING_SETUP_NO_SQARRAY, sq_thread_cpu=0x1, sq_thread_idle=799, sq_entries=2048, cq_entries=4096, 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=0, 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 5635] mmap(NULL, 65600, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 3, 0) = 0x7f592a7a8000 [pid 5635] mmap(NULL, 131072, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 3, 0x10000000) = 0x7f592a788000 [pid 5635] exit_group(0) = ? [pid 5635] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5635, si_uid=0, si_status=0, si_utime=0, si_stime=2 /* 0.02 s */} --- 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 5637 attached , child_tidptr=0x5555756686d0) = 5637 [pid 5634] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5637] set_robust_list(0x5555756686e0, 24) = 0 [pid 5637] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5637] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5637] setpgid(0, 0) = 0 [pid 5637] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5637] write(3, "1000", 4) = 4 [pid 5637] close(3) = 0 executing program [pid 5637] write(1, "executing program\n", 18) = 18 [pid 5637] io_uring_setup(1141, {flags=IORING_SETUP_SQPOLL|IORING_SETUP_SQ_AFF|IORING_SETUP_NO_SQARRAY, sq_thread_cpu=0x1, sq_thread_idle=799, sq_entries=2048, cq_entries=4096, 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=0, 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 5637] mmap(NULL, 65600, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 3, 0) = 0x7f592a7a8000 [pid 5637] mmap(NULL, 131072, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 3, 0x10000000) = 0x7f592a788000 [pid 5637] exit_group(0) = ? [pid 5637] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5637, 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 5639 attached [pid 5639] set_robust_list(0x5555756686e0, 24 [pid 5634] <... clone resumed>, child_tidptr=0x5555756686d0) = 5639 [pid 5639] <... set_robust_list resumed>) = 0 [pid 5639] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5634] rt_sigprocmask(SIG_SETMASK, [] [pid 5639] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5634] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5639] <... prctl resumed>) = 0 [pid 5639] setpgid(0, 0) = 0 [pid 5639] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5639] write(3, "1000", 4) = 4 [pid 5639] close(3) = 0 [pid 5639] write(1, "executing program\n", 18) = 18 executing program [pid 5639] io_uring_setup(1141, {flags=IORING_SETUP_SQPOLL|IORING_SETUP_SQ_AFF|IORING_SETUP_NO_SQARRAY, sq_thread_cpu=0x1, sq_thread_idle=799, sq_entries=2048, cq_entries=4096, 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=0, 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 5639] mmap(NULL, 65600, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 3, 0) = 0x7f592a7a8000 [pid 5639] mmap(NULL, 131072, PROT_READ|PROT_WRITE, MAP_SHARED|MAP_POPULATE, 3, 0x10000000) = 0x7f592a788000 [pid 5639] exit_group(0) = ? [pid 5639] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5639, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted rt_sigprocmask ...>) = 0 [ 91.950448][ T2221] ------------[ cut here ]------------ [ 91.950459][ T2221] test_bit(IO_SQ_THREAD_SHOULD_STOP, &sqd->state) [ 91.950465][ T2221] WARNING: io_uring/sqpoll.c:88 at io_sq_thread_stop+0x17e/0x1a0, CPU#0: kworker/u8:16/2221 [ 91.973729][ T2221] Modules linked in: [ 91.977707][ T2221] CPU: 0 UID: 0 PID: 2221 Comm: kworker/u8:16 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 91.987837][ T2221] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026 [ 91.997924][ T2221] Workqueue: iou_exit io_ring_exit_work [ 92.003542][ T2221] RIP: 0010:io_sq_thread_stop+0x17e/0x1a0 [ 92.009274][ T2221] 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 [ 92.029194][ T2221] RSP: 0018:ffffc90007747890 EFLAGS: 00010293 [ 92.035301][ T2221] RAX: ffffffff84d5061d RBX: ffff888034c8ec00 RCX: ffff88802d081f40 [ 92.043319][ T2221] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 92.051351][ T2221] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 92.059443][ T2221] R10: dffffc0000000000 R11: ffffed1006991dab R12: 0000000000000001 [ 92.067464][ T2221] R13: 0000000000000000 R14: ffff888034c8ed50 R15: dffffc0000000000 [ 92.075669][ T2221] FS: 0000000000000000(0000) GS:ffff888124718000(0000) knlGS:0000000000000000 [ 92.084653][ T2221] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 92.091289][ T2221] CR2: 00007fff16a7e000 CR3: 000000003d798000 CR4: 00000000003526f0 [ 92.099289][ T2221] Call Trace: [ 92.102673][ T2221] [ 92.105624][ T2221] io_put_sq_data+0x8a/0x150 [ 92.110288][ T2221] io_sq_thread_finish+0x1fd/0x240 [ 92.115528][ T2221] io_ring_ctx_free+0x2d/0x5e0 [ 92.120368][ T2221] io_ring_exit_work+0x5b1/0x640 [ 92.125319][ T2221] ? __pfx_io_ring_exit_work+0x10/0x10 [ 92.130892][ T2221] ? __pfx_io_tctx_exit_cb+0x10/0x10 [ 92.136196][ T2221] ? rcu_is_watching+0x16/0xb0 [ 92.141012][ T2221] ? process_scheduled_works+0x97a/0x1630 [ 92.146737][ T2221] process_scheduled_works+0xc3d/0x1630 [ 92.152344][ T2221] ? __pfx_process_scheduled_works+0x10/0x10 [ 92.158325][ T2221] ? assign_work+0x3cf/0x5d0 [ 92.162968][ T2221] worker_thread+0xa47/0xfb0 [ 92.167563][ T2221] kthread+0x38b/0x470 [ 92.171658][ T2221] ? __pfx_worker_thread+0x10/0x10 [ 92.176761][ T2221] ? __pfx_kthread+0x10/0x10 [ 92.181375][ T2221] ret_from_fork+0x514/0xb70 [ 92.185980][ T2221] ? __pfx_ret_from_fork+0x10/0x10 [ 92.191138][ T2221] ? __switch_to+0xc78/0x1410 [ 92.195804][ T2221] ? __pfx_kthread+0x10/0x10 [ 92.200442][ T2221] ret_from_fork_asm+0x1a/0x30 [ 92.205207][ T2221] [ 92.208230][ T2221] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 92.215553][ T2221] CPU: 0 UID: 0 PID: 2221 Comm: kworker/u8:16 Not tainted syzkaller #0 PREEMPT_{RT,(full)} [ 92.225612][ T2221] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026 [ 92.235676][ T2221] Workqueue: iou_exit io_ring_exit_work [ 92.241222][ T2221] Call Trace: [ 92.244500][ T2221] [ 92.247441][ T2221] vpanic+0x26f/0x710 [ 92.251413][ T2221] panic+0xc5/0xd0 [ 92.255124][ T2221] ? __pfx_panic+0x10/0x10 [ 92.259579][ T2221] ? ret_from_fork_asm+0x1a/0x30 [ 92.264530][ T2221] __warn+0x315/0x4c0 [ 92.268526][ T2221] ? io_sq_thread_stop+0x17e/0x1a0 [ 92.273638][ T2221] ? io_sq_thread_stop+0x17e/0x1a0 [ 92.278759][ T2221] __report_bug+0x276/0x570 [ 92.283287][ T2221] ? io_sq_thread_stop+0x17e/0x1a0 [ 92.288426][ T2221] ? __pfx___report_bug+0x10/0x10 [ 92.293464][ T2221] ? _raw_spin_unlock_irqrestore+0x30/0x80 [ 92.299275][ T2221] ? rt_mutex_slowunlock+0x4ee/0xa30 [ 92.304587][ T2221] ? io_sq_thread_stop+0x17e/0x1a0 [ 92.309721][ T2221] report_bug+0x16b/0x220 [ 92.314103][ T2221] ? io_sq_thread_stop+0x17e/0x1a0 [ 92.319223][ T2221] ? io_sq_thread_stop+0x180/0x1a0 [ 92.324341][ T2221] handle_bug+0x9c/0x200 [ 92.328686][ T2221] exc_invalid_op+0x1a/0x50 [ 92.333208][ T2221] asm_exc_invalid_op+0x1a/0x20 [ 92.338066][ T2221] RIP: 0010:io_sq_thread_stop+0x17e/0x1a0 [ 92.343791][ T2221] 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 [ 92.363454][ T2221] RSP: 0018:ffffc90007747890 EFLAGS: 00010293 [ 92.369539][ T2221] RAX: ffffffff84d5061d RBX: ffff888034c8ec00 RCX: ffff88802d081f40 [ 92.377507][ T2221] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 92.385515][ T2221] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 92.393495][ T2221] R10: dffffc0000000000 R11: ffffed1006991dab R12: 0000000000000001 [ 92.401474][ T2221] R13: 0000000000000000 R14: ffff888034c8ed50 R15: dffffc0000000000 [ 92.409475][ T2221] ? io_sq_thread_stop+0x17d/0x1a0 [ 92.414619][ T2221] io_put_sq_data+0x8a/0x150 [ 92.419262][ T2221] io_sq_thread_finish+0x1fd/0x240 [ 92.424426][ T2221] io_ring_ctx_free+0x2d/0x5e0 [ 92.429198][ T2221] io_ring_exit_work+0x5b1/0x640 [ 92.434148][ T2221] ? __pfx_io_ring_exit_work+0x10/0x10 [ 92.439624][ T2221] ? __pfx_io_tctx_exit_cb+0x10/0x10 [ 92.444922][ T2221] ? rcu_is_watching+0x16/0xb0 [ 92.449689][ T2221] ? process_scheduled_works+0x97a/0x1630 [ 92.455429][ T2221] process_scheduled_works+0xc3d/0x1630 [ 92.461014][ T2221] ? __pfx_process_scheduled_works+0x10/0x10 [ 92.467033][ T2221] ? assign_work+0x3cf/0x5d0 [ 92.471670][ T2221] worker_thread+0xa47/0xfb0 [ 92.476296][ T2221] kthread+0x38b/0x470 [ 92.480384][ T2221] ? __pfx_worker_thread+0x10/0x10 [ 92.485490][ T2221] ? __pfx_kthread+0x10/0x10 [ 92.490124][ T2221] ret_from_fork+0x514/0xb70 [ 92.494811][ T2221] ? __pfx_ret_from_fork+0x10/0x10 [ 92.499914][ T2221] ? __switch_to+0xc78/0x1410 [ 92.504590][ T2221] ? __pfx_kthread+0x10/0x10 [ 92.509182][ T2221] ret_from_fork_asm+0x1a/0x30 [ 92.513986][ T2221] [ 92.517298][ T2221] Kernel Offset: disabled [ 92.521635][ T2221] Rebooting in 86400 seconds..