ci-upstream-net-kasan-gce/strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ci-upstream-net-kasan-gce/syz-executor1972720821 <...> Warning: Permanently added '10.128.1.6' (ED25519) to the list of known hosts. execve("ci-upstream-net-kasan-gce/syz-executor1972720821", ["ci-upstream-net-kasan-gce/syz-executor1972720821"], 0x7ffcaacb5df0 /* 10 vars */) = 0 brk(NULL) = 0x55556fc72000 brk(0x55556fc72d80) = 0x55556fc72d80 arch_prctl(ARCH_SET_FS, 0x55556fc72400) = 0 set_tid_address(0x55556fc726d0) = 5659 set_robust_list(0x55556fc726e0, 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-net-kasan-gce/syz-executor1972720821", 4096) = 54 getrandom("\xff\x44\x96\xa6\x6c\x3b\x3d\xe8", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556fc72d80 brk(0x55556fc93d80) = 0x55556fc93d80 brk(0x55556fc94000) = 0x55556fc94000 mprotect(0x7f250e861000, 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-net-kasan-gce/strace-static-x86_64: Process 5660 attached , child_tidptr=0x55556fc726d0) = 5660 [pid 5660] set_robust_list(0x55556fc726e0, 24) = 0 [pid 5660] rt_sigprocmask(SIG_SETMASK, [] [pid 5659] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5660] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5660] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5660] setpgid(0, 0) = 0 [pid 5660] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5660] write(3, "1000", 4) = 4 [pid 5660] close(3) = 0 [pid 5660] write(1, "executing program\n", 18) = 18 [pid 5660] socket(AF_X25, SOCK_SEQPACKET, 0) = 3 executing program [pid 5660] ioctl(3, SIOCADDRT, 0x200000000140) = 0 [pid 5660] bind(3, {sa_family=AF_X25, sx25_addr={x25_addr=" "}}, 18) = 0 [pid 5660] connect(3, {sa_family=AF_X25, sx25_addr={x25_addr="\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\x20"}}, 18 [pid 5659] kill(-5660, SIGKILL [pid 5660] <... connect resumed>) = ? [pid 5659] <... kill resumed>) = 0 [pid 5659] kill(5660, SIGKILL) = 0 [pid 5660] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5660, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=1 /* 0.01 s */} --- restart_syscall(<... resuming interrupted kill ...>) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci-upstream-net-kasan-gce/strace-static-x86_64: Process 5661 attached , child_tidptr=0x55556fc726d0) = 5661 [pid 5659] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5661] set_robust_list(0x55556fc726e0, 24) = 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 [pid 5661] write(1, "executing program\n", 18) = 18 executing program [pid 5661] socket(AF_X25, SOCK_SEQPACKET, 0) = 3 [pid 5661] ioctl(3, SIOCADDRT, 0x200000000140) = -1 EINVAL (Invalid argument) [pid 5661] bind(3, {sa_family=AF_X25, sx25_addr={x25_addr=" "}}, 18) = 0 [pid 5661] connect(3, {sa_family=AF_X25, sx25_addr={x25_addr="\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\x20"}}, 18 [pid 5659] kill(-5661, SIGKILL) = 0 [pid 5659] kill(5661, SIGKILL) = 0 [pid 5661] <... connect resumed>) = ? [pid 5661] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5661, 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|SIGCHLDci-upstream-net-kasan-gce/strace-static-x86_64: Process 5662 attached , child_tidptr=0x55556fc726d0) = 5662 [pid 5662] set_robust_list(0x55556fc726e0, 24) = 0 [pid 5659] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5662] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5662] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5662] setpgid(0, 0) = 0 [pid 5662] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5662] write(3, "1000", 4) = 4 [pid 5662] close(3) = 0 executing program [pid 5662] write(1, "executing program\n", 18) = 18 [pid 5662] socket(AF_X25, SOCK_SEQPACKET, 0) = 3 [pid 5662] ioctl(3, SIOCADDRT, 0x200000000140) = -1 EINVAL (Invalid argument) [pid 5662] bind(3, {sa_family=AF_X25, sx25_addr={x25_addr=" "}}, 18) = 0 [pid 5662] connect(3, {sa_family=AF_X25, sx25_addr={x25_addr="\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\x20"}}, 18 [pid 5659] kill(-5662, SIGKILL [pid 5662] <... connect resumed>) = ? [pid 5659] <... kill resumed>) = 0 [pid 5659] kill(5662, SIGKILL) = 0 [pid 5662] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5662, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted kill ...>) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci-upstream-net-kasan-gce/strace-static-x86_64: Process 5663 attached [pid 5663] set_robust_list(0x55556fc726e0, 24 [pid 5659] <... clone resumed>, child_tidptr=0x55556fc726d0) = 5663 [pid 5663] <... set_robust_list resumed>) = 0 [pid 5663] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5659] 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] socket(AF_X25, SOCK_SEQPACKET, 0) = 3 [pid 5663] ioctl(3, SIOCADDRT, 0x200000000140) = -1 EINVAL (Invalid argument) [pid 5663] bind(3, {sa_family=AF_X25, sx25_addr={x25_addr=" "}}, 18) = 0 [pid 5663] connect(3, {sa_family=AF_X25, sx25_addr={x25_addr="\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\x20"}}, 18 [pid 5659] kill(-5663, SIGKILL) = 0 [pid 5659] kill(5663, SIGKILL) = 0 [pid 5663] <... connect resumed>) = ? [pid 5663] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5663, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted kill ...>) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci-upstream-net-kasan-gce/strace-static-x86_64: Process 5664 attached , child_tidptr=0x55556fc726d0) = 5664 [pid 5659] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5664] set_robust_list(0x55556fc726e0, 24) = 0 [pid 5664] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5664] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5664] setpgid(0, 0) = 0 [pid 5664] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5664] write(3, "1000", 4) = 4 [pid 5664] close(3) = 0 [pid 5664] write(1, "executing program\n", 18) = 18 executing program [pid 5664] socket(AF_X25, SOCK_SEQPACKET, 0) = 3 [pid 5664] ioctl(3, SIOCADDRT, 0x200000000140) = -1 EINVAL (Invalid argument) [pid 5664] bind(3, {sa_family=AF_X25, sx25_addr={x25_addr=" "}}, 18) = 0 [pid 5664] connect(3, {sa_family=AF_X25, sx25_addr={x25_addr="\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\x20"}}, 18 [pid 5659] kill(-5664, SIGKILL) = 0 [pid 5664] <... connect resumed>) = ? [pid 5659] kill(5664, SIGKILL) = 0 [pid 5664] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5664, si_uid=0, si_status=SIGKILL, si_utime=0, si_stime=0} --- restart_syscall(<... resuming interrupted kill ...>) = 0 rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci-upstream-net-kasan-gce/strace-static-x86_64: Process 5665 attached , child_tidptr=0x55556fc726d0) = 5665 [pid 5665] set_robust_list(0x55556fc726e0, 24) = 0 [pid 5659] rt_sigprocmask(SIG_SETMASK, [] [pid 5665] rt_sigprocmask(SIG_SETMASK, [] [pid 5659] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5665] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5665] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5665] setpgid(0, 0) = 0 [pid 5665] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5665] write(3, "1000", 4) = 4 [pid 5665] close(3) = 0 [pid 5665] write(1, "executing program\n", 18) = 18 executing program [pid 5665] socket(AF_X25, SOCK_SEQPACKET, 0) = 3 [pid 5665] ioctl(3, SIOCADDRT, 0x200000000140) = -1 EINVAL (Invalid argument) [pid 5665] bind(3, {sa_family=AF_X25, sx25_addr={x25_addr=" "}}, 18) = 0 [pid 5665] connect(3, {sa_family=AF_X25, sx25_addr={x25_addr="\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\x20"}}, 18 [pid 5659] kill(-5665, SIGKILL) = 0 [pid 5659] kill(5665, SIGKILL) = 0 [pid 5665] <... connect resumed>) = ? [pid 5665] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5665, 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|SIGCHLDci-upstream-net-kasan-gce/strace-static-x86_64: Process 5666 attached , child_tidptr=0x55556fc726d0) = 5666 [pid 5659] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5666] set_robust_list(0x55556fc726e0, 24) = 0 [pid 5666] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5666] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5666] setpgid(0, 0) = 0 [pid 5666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5666] write(3, "1000", 4) = 4 [pid 5666] close(3) = 0 [pid 5666] write(1, "executing program\n", 18) = 18 executing program [pid 5666] socket(AF_X25, SOCK_SEQPACKET, 0) = 3 [pid 5666] ioctl(3, SIOCADDRT, 0x200000000140) = -1 EINVAL (Invalid argument) [pid 5666] bind(3, {sa_family=AF_X25, sx25_addr={x25_addr=" "}}, 18) = 0 [ 152.777182][ C0] [ 152.779572][ C0] ================================ [ 152.784676][ C0] WARNING: inconsistent lock state [ 152.789787][ C0] syzkaller #0 Not tainted [ 152.794176][ C0] -------------------------------- [ 152.799274][ C0] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 152.806098][ C0] swapper/0/0 [HC0[0]:SC1[1]:HE1:SE0] takes: [ 152.812067][ C0] ffff888012134260 (sk_lock-AF_X25){+.?.}-{0:0}, at: x25_kill_by_neigh+0x10d/0x250 [ 152.821380][ C0] {SOFTIRQ-ON-W} state was registered at: [ 152.827087][ C0] lock_acquire+0x115/0x350 [ 152.831655][ C0] lock_sock_nested+0x41/0x100 [ 152.836485][ C0] x25_bind+0x209/0x450 [ 152.840726][ C0] __sys_bind+0x2e3/0x410 [ 152.845121][ C0] __x64_sys_bind+0x7a/0x90 [ 152.849691][ C0] do_syscall_64+0x166/0x520 [ 152.854463][ C0] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 152.860438][ C0] irq event stamp: 959832 [ 152.864738][ C0] hardirqs last enabled at (959832): [] __local_bh_enable_ip+0xd6/0x140 [ 152.874695][ C0] hardirqs last disabled at (959831): [] __local_bh_enable_ip+0x72/0x140 [ 152.884657][ C0] softirqs last enabled at (959634): [] __irq_exit_rcu+0xcb/0x220 [ 152.894106][ C0] softirqs last disabled at (959689): [] __irq_exit_rcu+0xcb/0x220 [ 152.903560][ C0] [ 152.903560][ C0] other info that might help us debug this: [ 152.911607][ C0] Possible unsafe locking scenario: [ 152.911607][ C0] [ 152.919035][ C0] CPU0 [ 152.922298][ C0] ---- [ 152.925554][ C0] lock(sk_lock-AF_X25); [ 152.929860][ C0] [ 152.933293][ C0] lock(sk_lock-AF_X25); [ 152.937772][ C0] [ 152.937772][ C0] *** DEADLOCK *** [ 152.937772][ C0] [ 152.945890][ C0] locks held by swapper/0/0: 1, last CPU#0: [ 152.951756][ C0] #0: ffffffff8ed5c6e0 (rcu_read_lock){....}-{1:3}, at: netif_receive_skb_core+0x33/0x2b0 [ 152.961738][ C0] [ 152.961738][ C0] stack backtrace: [ 152.967626][ C0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) [ 152.976627][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 152.986676][ C0] Call Trace: [ 152.989961][ C0] [ 152.992793][ C0] dump_stack_lvl+0xe8/0x150 [ 152.997391][ C0] print_usage_bug+0x28c/0x2e0 [ 153.002133][ C0] valid_state+0xbe/0xf0 [ 153.006373][ C0] mark_lock_irq+0x36/0x380 [ 153.010860][ C0] mark_lock+0x117/0x190 [ 153.015083][ C0] __lock_acquire+0x6b7/0x2e50 [ 153.019845][ C0] ? kasan_quarantine_put+0xbb/0x1f0 [ 153.025205][ C0] ? do_raw_spin_lock+0x12b/0x2f0 [ 153.030225][ C0] ? lock_acquire+0x115/0x350 [ 153.034881][ C0] lock_acquire+0x115/0x350 [ 153.039390][ C0] ? x25_kill_by_neigh+0x10d/0x250 [ 153.044485][ C0] ? x25_kill_by_neigh+0x103/0x250 [ 153.049597][ C0] lock_sock_nested+0x41/0x100 [ 153.054346][ C0] ? x25_kill_by_neigh+0x10d/0x250 [ 153.059445][ C0] x25_kill_by_neigh+0x10d/0x250 [ 153.064368][ C0] x25_lapb_receive_frame+0x1b0/0xfb0 [ 153.069727][ C0] ? netif_receive_skb_core+0x33/0x2b0 [ 153.075172][ C0] ? netif_receive_skb_core+0x33/0x2b0 [ 153.080610][ C0] ? __pfx_x25_lapb_receive_frame+0x10/0x10 [ 153.086501][ C0] netif_receive_skb_core+0x2a6/0x2b0 [ 153.091860][ C0] lapbeth_napi_poll+0x42/0x90 [ 153.096612][ C0] __napi_poll+0xaa/0x330 [ 153.100924][ C0] net_rx_action+0x61d/0xf50 [ 153.105502][ C0] ? __pfx_net_rx_action+0x10/0x10 [ 153.110600][ C0] handle_softirqs+0x226/0x860 [ 153.115347][ C0] ? __irq_exit_rcu+0xcb/0x220 [ 153.120102][ C0] __irq_exit_rcu+0xcb/0x220 [ 153.124670][ C0] irq_exit_rcu+0x9/0x30 [ 153.128891][ C0] sysvec_apic_timer_interrupt+0xa6/0xc0 [ 153.134507][ C0] [ 153.137416][ C0] [ 153.140326][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 153.146284][ C0] RIP: 0010:pv_native_safe_halt+0xf/0x20 [ 153.151899][ C0] Code: 5c 91 02 c3 cc cc cc cc 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 90 26 00 fb f4 0c 07 03 00 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 [ 153.171511][ C0] RSP: 0018:ffffffff8ea07ca0 EFLAGS: 00000242 [ 153.177559][ C0] RAX: 00000000000ea4c7 RBX: ffffffff819b9d40 RCX: 8000000000000001 [ 153.185525][ C0] RDX: 0000000000000001 RSI: ffffffff8e473125 RDI: ffffffff8c6d8b80 [ 153.193476][ C0] RBP: ffffffff8ea07d78 R08: ffff8880b8633a1b R09: 1ffff110170c6743 [ 153.201439][ C0] R10: dffffc0000000000 R11: ffffed10170c6744 R12: 0000000000000000 [ 153.209393][ C0] R13: 1ffffffff1d51df0 R14: 1ffffffff1d40f9c R15: dffffc0000000000 [ 153.217353][ C0] ? do_idle+0x2e0/0x540 [ 153.221582][ C0] default_idle+0x9/0x20 [ 153.225830][ C0] default_idle_call+0x72/0xb0 [ 153.230577][ C0] do_idle+0x2e0/0x540 [ 153.234644][ C0] ? __pfx_do_idle+0x10/0x10 [ 153.239216][ C0] cpu_startup_entry+0x43/0x60 [ 153.243999][ C0] rest_init+0x378/0x3a0 [ 153.248219][ C0] ? __pfx_rest_init+0x10/0x10 [ 153.252962][ C0] ? __pfx_kernel_init+0x10/0x10 [ 153.257875][ C0] ? __pfx_acpi_hw_get_mode+0x10/0x10 [ 153.263231][ C0] ? acpi_ut_status_exit+0x120/0x1f0 [ 153.268500][ C0] ? acpi_ut_status_exit+0x120/0x1f0 [ 153.273768][ C0] ? acpi_enable_subsystem+0x286/0x3c0 [pid 5666] connect(3, {sa_family=AF_X25, sx25_addr={x25_addr="\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\x20"}}, 18) = -1 ENETUNREACH (Network is unreachable) [pid 5666] exit_group(0) = ? [pid 5666] +++ exited with 0 +++ [ 153.279222][ C0] start_kernel+0x392/0x3e0 [ 153.283707][ C0] x86_64_start_reservations+0x24/0x30 [ 153.289162][ C0] x86_64_start_kernel+0x137/0x1b0 [ 153.294253][ C0] common_startup_64+0x13e/0x157 [ 153.299193][ C0] [ 153.302381][ C0] BUG: sleeping function called from invalid context at net/core/sock.c:3829 [ 153.302406][ C0] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 0, name: swapper/0 [ 153.302425][ C0] preempt_count: 101, expected: 0 --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5666, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLDci-upstream-net-kasan-gce/strace-static-x86_64: Process 5667 attached , child_tidptr=0x55556fc726d0) = 5667 [pid 5659] rt_sigprocmask(SIG_SETMASK, [] [pid 5667] set_robust_list(0x55556fc726e0, 24 [pid 5659] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5667] <... set_robust_list resumed>) = 0 [ 153.302436][ C0] RCU nest depth: 1, expected: 0 [ 153.302446][ C0] INFO: lockdep is turned off. [ 153.302454][ C0] Preemption disabled at: [ 153.302461][ C0] [] schedule_preempt_disabled+0x1d/0x30 [ 153.302504][ C0] CPU: 0 UID: 0 PID: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) [ 153.302527][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 [ 153.302539][ C0] Call Trace: [ 153.302547][ C0] [ 153.302555][ C0] dump_stack_lvl+0xe8/0x150 [pid 5667] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 5667] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5667] setpgid(0, 0) = 0 [pid 5667] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5667] write(3, "1000", 4) = 4 [pid 5667] close(3) = 0 [pid 5667] write(1, "executing program\n", 18) = 18 executing program [pid 5667] socket(AF_X25, SOCK_SEQPACKET, 0) = 3 [pid 5667] ioctl(3, SIOCADDRT, 0x200000000140) = -1 EINVAL (Invalid argument) [pid 5667] bind(3, {sa_family=AF_X25, sx25_addr={x25_addr=" "}}, 18) = 0 [ 153.302586][ C0] __might_resched+0x36a/0x4c0 [ 153.302615][ C0] ? schedule_preempt_disabled+0x1d/0x30 [ 153.302643][ C0] lock_sock_nested+0x56/0x100 [ 153.302665][ C0] x25_kill_by_neigh+0x10d/0x250 [ 153.302698][ C0] x25_lapb_receive_frame+0x1b0/0xfb0 [ 153.302733][ C0] ? netif_receive_skb_core+0x33/0x2b0 [ 153.302760][ C0] ? netif_receive_skb_core+0x33/0x2b0 [ 153.302782][ C0] ? __pfx_x25_lapb_receive_frame+0x10/0x10 [ 153.302806][ C0] netif_receive_skb_core+0x2a6/0x2b0 [ 153.302827][ C0] lapbeth_napi_poll+0x42/0x90 [ 153.302845][ C0] __napi_poll+0xaa/0x330 [ 153.302867][ C0] net_rx_action+0x61d/0xf50 [ 153.302894][ C0] ? __pfx_net_rx_action+0x10/0x10 [ 153.302932][ C0] handle_softirqs+0x226/0x860 [ 153.302960][ C0] ? __irq_exit_rcu+0xcb/0x220 [ 153.302988][ C0] __irq_exit_rcu+0xcb/0x220 [ 153.303014][ C0] irq_exit_rcu+0x9/0x30 [ 153.303038][ C0] sysvec_apic_timer_interrupt+0xa6/0xc0 [ 153.303064][ C0] [ 153.303071][ C0] [ 153.303078][ C0] asm_sysvec_apic_timer_interrupt+0x1a/0x20 [ 153.303100][ C0] RIP: 0010:pv_native_safe_halt+0xf/0x20 [ 153.303133][ C0] Code: 5c 91 02 c3 cc cc cc cc 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 90 26 00 fb f4 0c 07 03 00 cc cc cc cc cc cc cc cc cc cc cc cc 90 90 90 90 90 [ 153.303218][ C0] RSP: 0018:ffffffff8ea07ca0 EFLAGS: 00000242 [ 153.303236][ C0] RAX: 00000000000ea4c7 RBX: ffffffff819b9d40 RCX: 8000000000000001 [ 153.303251][ C0] RDX: 0000000000000001 RSI: ffffffff8e473125 RDI: ffffffff8c6d8b80 [ 153.303265][ C0] RBP: ffffffff8ea07d78 R08: ffff8880b8633a1b R09: 1ffff110170c6743 [ 153.303280][ C0] R10: dffffc0000000000 R11: ffffed10170c6744 R12: 0000000000000000 [ 153.303295][ C0] R13: 1ffffffff1d51df0 R14: 1ffffffff1d40f9c R15: dffffc0000000000 [ 153.303314][ C0] ? do_idle+0x2e0/0x540 [ 153.303352][ C0] default_idle+0x9/0x20 [ 153.303381][ C0] default_idle_call+0x72/0xb0 [ 153.303411][ C0] do_idle+0x2e0/0x540 [ 153.303441][ C0] ? __pfx_do_idle+0x10/0x10 [ 153.303474][ C0] cpu_startup_entry+0x43/0x60 [ 153.303504][ C0] rest_init+0x378/0x3a0 [ 153.303522][ C0] ? __pfx_rest_init+0x10/0x10 [ 153.303542][ C0] ? __pfx_kernel_init+0x10/0x10 [ 153.303561][ C0] ? __pfx_acpi_hw_get_mode+0x10/0x10 [ 153.303585][ C0] ? acpi_ut_status_exit+0x120/0x1f0 [ 153.303616][ C0] ? acpi_ut_status_exit+0x120/0x1f0 [ 153.303643][ C0] ? acpi_enable_subsystem+0x286/0x3c0 [ 153.303673][ C0] start_kernel+0x392/0x3e0 [ 153.303702][ C0] x86_64_start_reservations+0x24/0x30 [ 153.303724][ C0] x86_64_start_kernel+0x137/0x1b0 [ 153.303746][ C0] common_startup_64+0x13e/0x157 [ 153.303777][ C0] [pid 5667] connect(3, {sa_family=AF_X25, sx25_addr={x25_addr="\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\xcc\x20"}}, 18 [pid 5659] kill(-5667, SIGKILL) = 0 [pid 5667] <... connect resumed>) = ? [pid 5659] kill(5667, SIGKILL) = 0 [pid 5667] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=5667, 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|SIGCHLDci-upstream-net-kasan-gce/strace-static-x86_64: Process 5668 attached , child_tidptr=0x55556fc726d0) = 5668 [pid 5668] set_robust_list(0x55556fc726e0, 24) = 0 [pid 5659] rt_sigprocmask(SIG_SETMASK, [] [pid 5668] rt_sigprocmask(SIG_SETMASK, [] [pid 5659] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5668] <... rt_sigprocmask resumed>, NULL, 8) = 0 [pid 5668] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5668] setpgid(0, 0) = 0 [pid 5668] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5668] write(3, "1000", 4) = 4 executing program [pid 5668] close(3) = 0 [pid 5668] write(1, "executing program\n", 18) = 18 [pid 5668] socket(AF_X25, SOCK_SEQPACKET, 0) = 3 [pid 5668] ioctl(3, SIOCADDRT, 0x200000000140) = -1 EINVAL (Invalid argument) [pid 5668] bind(3, {sa_family=AF_X25, sx25_addr={x25_addr=" "}}, 18) = 0