ci-upstream-kasan-gce-root/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci-upstream-kasan-gce-root/syz-executor909201147 <...> Warning: Permanently added '10.128.0.67' (ED25519) to the list of known hosts. execve("ci-upstream-kasan-gce-root/syz-executor909201147", ["ci-upstream-kasan-gce-root/syz-executor909201147"], 0x7ffed4affad0 /* 10 vars */) = 0 brk(NULL) = 0x55555bd2f000 brk(0x55555bd2fd80) = 0x55555bd2fd80 arch_prctl(ARCH_SET_FS, 0x55555bd2f400) = 0 set_tid_address(0x55555bd2f6d0) = 5634 set_robust_list(0x55555bd2f6e0, 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/ci-upstream-kasan-gce-root/syz-executor909201147", 4096) = 54 getrandom("\x82\x7f\x19\x6f\x35\x83\x8a\x94", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55555bd2fd80 brk(0x55555bd50d80) = 0x55555bd50d80 brk(0x55555bd51000) = 0x55555bd51000 mprotect(0x7f2145be2000, 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|SIGCHLDci-upstream-kasan-gce-root/strace-static-x86_64: Process 5635 attached [pid 5635] set_robust_list(0x55555bd2f6e0, 24 [pid 5634] <... clone resumed>, child_tidptr=0x55555bd2f6d0) = 5635 [pid 5634] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5635] <... set_robust_list resumed>) = 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] openat(AT_FDCWD, "/dev/ptmx", O_RDWR) = 3 [pid 5635] ioctl(3, TIOCSPTLCK, [0]) = 0 [pid 5635] ioctl(3, TIOCGPTN, [0]) = 0 [pid 5635] openat(AT_FDCWD, "/dev/pts/0", O_RDWR) = 4 [pid 5635] ioctl(4, TIOCSETD, [17]) = 0 [pid 5635] socket(AF_LLC, SOCK_DGRAM, 0) = 5 [pid 5635] ioctl(5, SIOCSIFFLAGS, {ifr_name="can0", ifr_flags=IFF_UP}) = 0 [ 84.687280][ T5635] can0: slcan on pts0. [ 84.706300][ C0] ------------[ cut here ]------------ [ 84.706314][ C0] 1 [ 84.706322][ C0] WARNING: ./include/linux/skbuff.h:3003 at __netif_receive_skb_core+0x294/0x30c0, CPU#0: kworker/u8:1/13 [ 84.725848][ C0] Modules linked in: [ 84.729774][ C0] CPU: 0 UID: 0 PID: 13 Comm: kworker/u8:1 Not tainted syzkaller #0 PREEMPT(full) [ 84.739115][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2026 [ 84.749211][ C0] Workqueue: events_unbound flush_to_ldisc [ 84.755073][ C0] RIP: 0010:__netif_receive_skb_core+0x294/0x30c0 [ 84.761504][ C0] Code: f8 4d 8d b7 b8 00 00 00 4c 89 f0 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 87 2a 00 00 45 8b 36 41 29 de eb 0c e8 fd f1 12 f8 90 <0f> 0b 90 45 31 f6 48 8d 9c 24 e0 00 00 00 48 c7 84 24 b0 00 00 00 [ 84.781143][ C0] RSP: 0018:ffffc90000007a00 EFLAGS: 00010246 [pid 5635] write(3, "e1a\r", 4) = 4 [pid 5635] exit_group(0) = ? [ 84.787262][ C0] RAX: ffffffff89b4de53 RBX: 000000000000ffff RCX: ffff88801e285dc0 [ 84.795270][ C0] RDX: 8000000000000100 RSI: 0000000000000100 RDI: 000000000000ffff [ 84.803269][ C0] RBP: ffffc90000007c40 R08: 0000000000000100 R09: 1ffffffff20f47af [ 84.811247][ C0] R10: dffffc0000000000 R11: fffffbfff20f47b0 R12: 0000000000000000 [ 84.819250][ C0] R13: dffffc0000000000 R14: 0000000000000040 R15: ffff88806fca1000 [ 84.827264][ C0] FS: 0000000000000000(0000) GS:ffff888124cd1000(0000) knlGS:0000000000000000 [ 84.836261][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 84.842893][ C0] CR2: 000055f202092978 CR3: 0000000078aa4000 CR4: 0000000000350ef0 [ 84.850905][ C0] Call Trace: [ 84.854211][ C0] [ 84.857057][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 84.862717][ C0] ? register_lock_class+0x262/0x2e0 [ 84.868049][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 84.873744][ C0] ? __lock_acquire+0x747/0x2de0 [ 84.878713][ C0] ? __pfx___netif_receive_skb_core+0x10/0x10 [ 84.884813][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 84.890486][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 84.896150][ C0] ? lock_acquire+0x115/0x350 [ 84.900848][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 84.906527][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 84.912219][ C0] ? process_backlog+0x3de/0x18b0 [ 84.917256][ C0] ? process_backlog+0x3de/0x18b0 [ 84.922336][ C0] ? process_backlog+0x3de/0x18b0 [ 84.927389][ C0] process_backlog+0x727/0x18b0 [ 84.932279][ C0] ? process_backlog+0x3de/0x18b0 [ 84.937419][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 84.943101][ C0] __napi_poll+0xaa/0x330 [ 84.947448][ C0] net_rx_action+0x61d/0xf50 [ 84.952045][ C0] ? __pfx_net_rx_action+0x10/0x10 [ 84.957188][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 84.962905][ C0] ? __pfx_sched_clock_cpu+0x10/0x10 [ 84.968227][ C0] handle_softirqs+0x226/0x860 [ 84.973064][ C0] ? do_softirq+0x77/0xd0 [ 84.977450][ C0] ? netif_rx+0x7f/0xa0 [ 84.981643][ C0] do_softirq+0x77/0xd0 [ 84.985845][ C0] [ 84.988784][ C0] [ 84.991722][ C0] __local_bh_enable_ip+0x100/0x140 [ 84.996958][ C0] netif_rx+0x89/0xa0 [ 85.000974][ C0] slcan_receive_buf+0x1c5f/0x2140 [ 85.006153][ C0] ? __pfx_slcan_receive_buf+0x10/0x10 [ 85.011666][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 85.017354][ C0] ? ldsem_down_read_trylock+0x13d/0x1b0 [ 85.023039][ C0] ? tty_ldisc_ref+0x1c/0x90 [ 85.027630][ C0] ? __pfx_ldsem_down_read_trylock+0x10/0x10 [ 85.033645][ C0] ? tty_buffer_free+0x1e5/0x2f0 [ 85.038622][ C0] ? __pfx_slcan_receive_buf+0x10/0x10 [ 85.044128][ C0] tty_ldisc_receive_buf+0x119/0x160 [ 85.049443][ C0] tty_port_default_receive_buf+0x6e/0xa0 [ 85.055206][ C0] flush_to_ldisc+0x247/0x6c0 [ 85.059917][ C0] ? process_scheduled_works+0x97a/0x1630 [ 85.065673][ C0] process_scheduled_works+0xc3d/0x1630 [ 85.071269][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 85.076987][ C0] ? __pfx_process_scheduled_works+0x10/0x10 [ 85.083069][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 85.088726][ C0] ? assign_work+0x3cf/0x5d0 [ 85.093381][ C0] worker_thread+0xa47/0xfb0 [ 85.098055][ C0] kthread+0x38b/0x480 [ 85.102187][ C0] ? __pfx_worker_thread+0x10/0x10 [ 85.107326][ C0] ? __pfx_kthread+0x10/0x10 [ 85.111910][ C0] ret_from_fork+0x514/0xb70 [ 85.116528][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 85.121652][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 85.127311][ C0] ? __switch_to+0xc89/0x1420 [ 85.132015][ C0] ? __pfx_kthread+0x10/0x10 [ 85.136638][ C0] ret_from_fork_asm+0x1a/0x30 [ 85.141484][ C0] [ 85.144526][ C0] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 85.151829][ C0] CPU: 0 UID: 0 PID: 13 Comm: kworker/u8:1 Not tainted syzkaller #0 PREEMPT(full) [ 85.161093][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2026 [ 85.171134][ C0] Workqueue: events_unbound flush_to_ldisc [ 85.176941][ C0] Call Trace: [ 85.180204][ C0] [ 85.183055][ C0] vpanic+0x56d/0xa60 [ 85.187048][ C0] ? __pfx__printk+0x10/0x10 [ 85.191629][ C0] ? __pfx_vpanic+0x10/0x10 [ 85.196132][ C0] ? is_bpf_text_address+0x292/0x2b0 [ 85.201417][ C0] ? is_bpf_text_address+0x26/0x2b0 [ 85.206620][ C0] panic+0xc5/0xd0 [ 85.210362][ C0] ? __pfx_panic+0x10/0x10 [ 85.214793][ C0] ? ret_from_fork_asm+0x1a/0x30 [ 85.219749][ C0] __warn+0x315/0x4c0 [ 85.223737][ C0] ? __netif_receive_skb_core+0x294/0x30c0 [ 85.229549][ C0] ? __netif_receive_skb_core+0x294/0x30c0 [ 85.235352][ C0] __report_bug+0x276/0x570 [ 85.239862][ C0] ? __netif_receive_skb_core+0x294/0x30c0 [ 85.245667][ C0] ? __pfx___report_bug+0x10/0x10 [ 85.250699][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 85.256332][ C0] ? lock_acquire+0x115/0x350 [ 85.261009][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 85.266642][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 85.272274][ C0] ? __netif_receive_skb_core+0x294/0x30c0 [ 85.278077][ C0] report_bug+0x16b/0x220 [ 85.282405][ C0] ? __netif_receive_skb_core+0x294/0x30c0 [ 85.288204][ C0] ? __netif_receive_skb_core+0x296/0x30c0 [ 85.294008][ C0] handle_bug+0x9c/0x200 [ 85.298253][ C0] exc_invalid_op+0x1a/0x50 [ 85.302757][ C0] asm_exc_invalid_op+0x1a/0x20 [ 85.307614][ C0] RIP: 0010:__netif_receive_skb_core+0x294/0x30c0 [ 85.314024][ C0] Code: f8 4d 8d b7 b8 00 00 00 4c 89 f0 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 87 2a 00 00 45 8b 36 41 29 de eb 0c e8 fd f1 12 f8 90 <0f> 0b 90 45 31 f6 48 8d 9c 24 e0 00 00 00 48 c7 84 24 b0 00 00 00 [ 85.333623][ C0] RSP: 0018:ffffc90000007a00 EFLAGS: 00010246 [ 85.339703][ C0] RAX: ffffffff89b4de53 RBX: 000000000000ffff RCX: ffff88801e285dc0 [ 85.347668][ C0] RDX: 8000000000000100 RSI: 0000000000000100 RDI: 000000000000ffff [ 85.355638][ C0] RBP: ffffc90000007c40 R08: 0000000000000100 R09: 1ffffffff20f47af [ 85.363600][ C0] R10: dffffc0000000000 R11: fffffbfff20f47b0 R12: 0000000000000000 [ 85.371573][ C0] R13: dffffc0000000000 R14: 0000000000000040 R15: ffff88806fca1000 [ 85.379567][ C0] ? __netif_receive_skb_core+0x293/0x30c0 [ 85.385390][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 85.391025][ C0] ? register_lock_class+0x262/0x2e0 [ 85.396312][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 85.401944][ C0] ? __lock_acquire+0x747/0x2de0 [ 85.406913][ C0] ? __pfx___netif_receive_skb_core+0x10/0x10 [ 85.412977][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 85.418654][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 85.424292][ C0] ? lock_acquire+0x115/0x350 [ 85.429039][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 85.434695][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 85.440341][ C0] ? process_backlog+0x3de/0x18b0 [ 85.445365][ C0] ? process_backlog+0x3de/0x18b0 [ 85.450388][ C0] ? process_backlog+0x3de/0x18b0 [ 85.455418][ C0] process_backlog+0x727/0x18b0 [ 85.460274][ C0] ? process_backlog+0x3de/0x18b0 [ 85.465300][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 85.470947][ C0] __napi_poll+0xaa/0x330 [ 85.475277][ C0] net_rx_action+0x61d/0xf50 [ 85.479903][ C0] ? __pfx_net_rx_action+0x10/0x10 [ 85.485039][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 85.490684][ C0] ? __pfx_sched_clock_cpu+0x10/0x10 [ 85.495986][ C0] handle_softirqs+0x226/0x860 [ 85.500759][ C0] ? do_softirq+0x77/0xd0 [ 85.505094][ C0] ? netif_rx+0x7f/0xa0 [ 85.509255][ C0] do_softirq+0x77/0xd0 [ 85.513417][ C0] [ 85.516346][ C0] [ 85.519268][ C0] __local_bh_enable_ip+0x100/0x140 [ 85.524467][ C0] netif_rx+0x89/0xa0 [ 85.528456][ C0] slcan_receive_buf+0x1c5f/0x2140 [ 85.533608][ C0] ? __pfx_slcan_receive_buf+0x10/0x10 [ 85.539086][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 85.544718][ C0] ? ldsem_down_read_trylock+0x13d/0x1b0 [ 85.550358][ C0] ? tty_ldisc_ref+0x1c/0x90 [ 85.554956][ C0] ? __pfx_ldsem_down_read_trylock+0x10/0x10 [ 85.560934][ C0] ? tty_buffer_free+0x1e5/0x2f0 [ 85.565872][ C0] ? __pfx_slcan_receive_buf+0x10/0x10 [ 85.571363][ C0] tty_ldisc_receive_buf+0x119/0x160 [ 85.576650][ C0] tty_port_default_receive_buf+0x6e/0xa0 [ 85.582369][ C0] flush_to_ldisc+0x247/0x6c0 [ 85.587049][ C0] ? process_scheduled_works+0x97a/0x1630 [ 85.592771][ C0] process_scheduled_works+0xc3d/0x1630 [ 85.598323][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 85.603988][ C0] ? __pfx_process_scheduled_works+0x10/0x10 [ 85.609978][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 85.615620][ C0] ? assign_work+0x3cf/0x5d0 [ 85.620231][ C0] worker_thread+0xa47/0xfb0 [ 85.624884][ C0] kthread+0x38b/0x480 [ 85.628948][ C0] ? __pfx_worker_thread+0x10/0x10 [ 85.634061][ C0] ? __pfx_kthread+0x10/0x10 [ 85.638651][ C0] ret_from_fork+0x514/0xb70 [ 85.643236][ C0] ? __pfx_ret_from_fork+0x10/0x10 [ 85.648341][ C0] ? srso_alias_return_thunk+0x5/0xfbef5 [ 85.653968][ C0] ? __switch_to+0xc89/0x1420 [ 85.658652][ C0] ? __pfx_kthread+0x10/0x10 [ 85.663238][ C0] ret_from_fork_asm+0x1a/0x30 [ 85.668027][ C0] [ 85.671268][ C0] Kernel Offset: disabled [ 85.675576][ C0] Rebooting in 86400 seconds..