./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2086552192 <...> Warning: Permanently added '10.128.1.158' (ED25519) to the list of known hosts. execve("./syz-executor2086552192", ["./syz-executor2086552192"], 0x7ffda5b13470 /* 10 vars */) = 0 brk(NULL) = 0x55556f06f000 brk(0x55556f06fd00) = 0x55556f06fd00 arch_prctl(ARCH_SET_FS, 0x55556f06f380) = 0 set_tid_address(0x55556f06f650) = 5229 set_robust_list(0x55556f06f660, 24) = 0 rseq(0x55556f06fca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2086552192", 4096) = 28 getrandom("\xce\xc2\x51\xd7\x87\xcf\x83\xe7", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556f06fd00 brk(0x55556f090d00) = 0x55556f090d00 brk(0x55556f091000) = 0x55556f091000 mprotect(0x7f80364b5000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5230 attached [pid 5230] set_robust_list(0x55556f06f660, 24 [pid 5229] <... clone resumed>, child_tidptr=0x55556f06f650) = 5230 [pid 5230] <... set_robust_list resumed>) = 0 [pid 5230] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5230] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5230] setsid() = 1 [pid 5230] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5230] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5230] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5230] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5230] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5230] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5230] unshare(CLONE_NEWNS) = 0 [pid 5230] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5230] unshare(CLONE_NEWIPC) = 0 [pid 5230] unshare(CLONE_NEWCGROUP) = 0 [pid 5230] unshare(CLONE_NEWUTS) = 0 [pid 5230] unshare(CLONE_SYSVSEM) = 0 [pid 5230] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5230] write(3, "16777216", 8) = 8 [pid 5230] close(3) = 0 [pid 5230] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5230] write(3, "536870912", 9) = 9 [pid 5230] close(3) = 0 [pid 5230] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5230] write(3, "1024", 4) = 4 [pid 5230] close(3) = 0 [pid 5230] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5230] write(3, "8192", 4) = 4 [pid 5230] close(3) = 0 [pid 5230] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5230] write(3, "1024", 4) = 4 [pid 5230] close(3) = 0 [pid 5230] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5230] write(3, "1024", 4) = 4 [pid 5230] close(3) = 0 [pid 5230] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5230] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5230] close(3) = 0 [pid 5230] getpid() = 1 [pid 5230] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b 90 90 e9 76 ff ff ff e8 f8 88 e3 fc c6 05 50 7d 31 0b 01 90 [ 84.947985][ C0] RSP: 0018:ffffc900001574e0 EFLAGS: 00010246 [ 84.954065][ C0] RAX: d94e22139a4e7d00 RBX: ffff88802904f5e4 RCX: ffff8880176dda00 [ 84.962104][ C0] RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 [ 84.970172][ C0] RBP: 0000000000000003 R08: ffffffff81559432 R09: fffffbfff1cb9f88 [ 84.978235][ C0] R10: dffffc0000000000 R11: fffffbfff1cb9f88 R12: ffff88802327c068 [ 84.986299][ C0] R13: ffff88802904f5e4 R14: 1ffff1100464f818 R15: ffff88802327c000 [ 84.994309][ C0] FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 [ 85.003460][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 85.010227][ C0] CR2: 0000000020000000 CR3: 000000002d80c000 CR4: 00000000003506f0 [ 85.018548][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 85.026615][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 85.034610][ C0] Call Trace: [ 85.037950][ C0] [ 85.040908][ C0] ? __warn+0x163/0x4e0 [ 85.045071][ C0] ? refcount_warn_saturate+0x15a/0x1d0 [ 85.050692][ C0] ? report_bug+0x2b3/0x500 [ 85.055326][ C0] ? refcount_warn_saturate+0x15a/0x1d0 [ 85.060964][ C0] ? handle_bug+0x3e/0x70 [ 85.065342][ C0] ? exc_invalid_op+0x1a/0x50 [ 85.070100][ C0] ? asm_exc_invalid_op+0x1a/0x20 [ 85.075187][ C0] ? __warn_printk+0x292/0x360 [ 85.080026][ C0] ? refcount_warn_saturate+0x15a/0x1d0 [ 85.085605][ C0] j1939_session_put+0x1e7/0x440 [ 85.090619][ C0] j1939_tp_recv+0x7fe/0x1050 [ 85.095337][ C0] j1939_can_recv+0x732/0xb20 [ 85.100092][ C0] ? __pfx_j1939_can_recv+0x10/0x10 [ 85.105325][ C0] ? __lock_acquire+0x137a/0x2040 [ 85.110424][ C0] ? __pfx_j1939_can_recv+0x10/0x10 [ 85.115654][ C0] can_rcv_filter+0x359/0x7f0 [ 85.120421][ C0] ? can_receive+0x1cd/0x470 [ 85.125132][ C0] can_receive+0x31c/0x470 [ 85.129625][ C0] can_rcv+0x144/0x260 [ 85.133724][ C0] ? __pfx_can_rcv+0x10/0x10 [ 85.138401][ C0] __netif_receive_skb+0x2e0/0x650 [ 85.143549][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 85.148646][ C0] ? __pfx___netif_receive_skb+0x10/0x10 [ 85.154310][ C0] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 85.160375][ C0] ? __pfx_lock_release+0x10/0x10 [ 85.165437][ C0] ? _raw_spin_lock_irq+0xdf/0x120 [ 85.170635][ C0] process_backlog+0x662/0x15b0 [ 85.175524][ C0] ? process_backlog+0x33b/0x15b0 [ 85.180629][ C0] ? __pfx_process_backlog+0x10/0x10 [ 85.185993][ C0] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 85.192011][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 85.198416][ C0] __napi_poll+0xcb/0x490 [ 85.202777][ C0] net_rx_action+0x89b/0x1240 [ 85.207547][ C0] ? __pfx_net_rx_action+0x10/0x10 [ 85.212692][ C0] ? rcu_qs+0xf1/0x190 [ 85.216861][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 85.223289][ C0] handle_softirqs+0x2c4/0x970 [ 85.228127][ C0] ? run_ksoftirqd+0xca/0x130 [ 85.232943][ C0] ? __pfx_handle_softirqs+0x10/0x10 [ 85.238321][ C0] run_ksoftirqd+0xca/0x130 [ 85.242873][ C0] ? __pfx_run_ksoftirqd+0x10/0x10 [ 85.248068][ C0] ? __pfx_run_ksoftirqd+0x10/0x10 [ 85.253221][ C0] smpboot_thread_fn+0x544/0xa30 [ 85.258227][ C0] ? smpboot_thread_fn+0x4e/0xa30 [ 85.263294][ C0] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 85.268821][ C0] kthread+0x2f0/0x390 [ 85.272919][ C0] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 85.278437][ C0] ? __pfx_kthread+0x10/0x10 [ 85.283053][ C0] ret_from_fork+0x4b/0x80 [ 85.287535][ C0] ? __pfx_kthread+0x10/0x10 [ 85.292160][ C0] ret_from_fork_asm+0x1a/0x30 [ 85.297011][ C0] [ 85.300053][ C0] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 85.307329][ C0] CPU: 0 UID: 0 PID: 16 Comm: ksoftirqd/0 Not tainted 6.10.0-syzkaller-12610-g743ff02152bc #0 [ 85.317570][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 [ 85.327637][ C0] Call Trace: [ 85.330931][ C0] [ 85.333858][ C0] dump_stack_lvl+0x241/0x360 [ 85.338542][ C0] ? __pfx_dump_stack_lvl+0x10/0x10 [ 85.343747][ C0] ? __pfx__printk+0x10/0x10 [ 85.348363][ C0] ? vscnprintf+0x5d/0x90 [ 85.352697][ C0] panic+0x349/0x860 [ 85.356600][ C0] ? __warn+0x172/0x4e0 [ 85.360762][ C0] ? __pfx_panic+0x10/0x10 [ 85.365187][ C0] ? ret_from_fork_asm+0x1a/0x30 [ 85.370135][ C0] __warn+0x346/0x4e0 [ 85.374116][ C0] ? refcount_warn_saturate+0x15a/0x1d0 [ 85.379677][ C0] report_bug+0x2b3/0x500 [ 85.384016][ C0] ? refcount_warn_saturate+0x15a/0x1d0 [ 85.389593][ C0] handle_bug+0x3e/0x70 [ 85.393779][ C0] exc_invalid_op+0x1a/0x50 [ 85.398290][ C0] asm_exc_invalid_op+0x1a/0x20 [ 85.403152][ C0] RIP: 0010:refcount_warn_saturate+0x15a/0x1d0 [ 85.409319][ C0] Code: 00 17 40 8c e8 67 97 a5 fc 90 0f 0b 90 90 eb 99 e8 1b 89 e3 fc c6 05 76 7d 31 0b 01 90 48 c7 c7 60 17 40 8c e8 47 97 a5 fc 90 <0f> 0b 90 90 e9 76 ff ff ff e8 f8 88 e3 fc c6 05 50 7d 31 0b 01 90 [ 85.429025][ C0] RSP: 0018:ffffc900001574e0 EFLAGS: 00010246 [ 85.435125][ C0] RAX: d94e22139a4e7d00 RBX: ffff88802904f5e4 RCX: ffff8880176dda00 [ 85.443102][ C0] RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 [ 85.451075][ C0] RBP: 0000000000000003 R08: ffffffff81559432 R09: fffffbfff1cb9f88 [ 85.459072][ C0] R10: dffffc0000000000 R11: fffffbfff1cb9f88 R12: ffff88802327c068 [ 85.467083][ C0] R13: ffff88802904f5e4 R14: 1ffff1100464f818 R15: ffff88802327c000 [ 85.475093][ C0] ? __warn_printk+0x292/0x360 [ 85.479908][ C0] j1939_session_put+0x1e7/0x440 [ 85.484863][ C0] j1939_tp_recv+0x7fe/0x1050 [ 85.489556][ C0] j1939_can_recv+0x732/0xb20 [ 85.494305][ C0] ? __pfx_j1939_can_recv+0x10/0x10 [ 85.499561][ C0] ? __lock_acquire+0x137a/0x2040 [ 85.504641][ C0] ? __pfx_j1939_can_recv+0x10/0x10 [ 85.509881][ C0] can_rcv_filter+0x359/0x7f0 [ 85.514590][ C0] ? can_receive+0x1cd/0x470 [ 85.519205][ C0] can_receive+0x31c/0x470 [ 85.523678][ C0] can_rcv+0x144/0x260 [ 85.527797][ C0] ? __pfx_can_rcv+0x10/0x10 [ 85.532431][ C0] __netif_receive_skb+0x2e0/0x650 [ 85.537575][ C0] ? __pfx_lock_acquire+0x10/0x10 [ 85.542612][ C0] ? __pfx___netif_receive_skb+0x10/0x10 [ 85.548272][ C0] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 85.554306][ C0] ? __pfx_lock_release+0x10/0x10 [ 85.559383][ C0] ? _raw_spin_lock_irq+0xdf/0x120 [ 85.564561][ C0] process_backlog+0x662/0x15b0 [ 85.569443][ C0] ? process_backlog+0x33b/0x15b0 [ 85.574487][ C0] ? __pfx_process_backlog+0x10/0x10 [ 85.579776][ C0] ? lockdep_hardirqs_on_prepare+0x43d/0x780 [ 85.585768][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 85.592119][ C0] __napi_poll+0xcb/0x490 [ 85.596553][ C0] net_rx_action+0x89b/0x1240 [ 85.601259][ C0] ? __pfx_net_rx_action+0x10/0x10 [ 85.606499][ C0] ? rcu_qs+0xf1/0x190 [ 85.610632][ C0] ? __pfx_lockdep_hardirqs_on_prepare+0x10/0x10 [ 85.617002][ C0] handle_softirqs+0x2c4/0x970 [ 85.621805][ C0] ? run_ksoftirqd+0xca/0x130 [ 85.626494][ C0] ? __pfx_handle_softirqs+0x10/0x10 [ 85.631800][ C0] run_ksoftirqd+0xca/0x130 [ 85.636338][ C0] ? __pfx_run_ksoftirqd+0x10/0x10 [ 85.641467][ C0] ? __pfx_run_ksoftirqd+0x10/0x10 [ 85.646593][ C0] smpboot_thread_fn+0x544/0xa30 [ 85.651540][ C0] ? smpboot_thread_fn+0x4e/0xa30 [ 85.656602][ C0] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 85.662071][ C0] kthread+0x2f0/0x390 [ 85.666142][ C0] ? __pfx_smpboot_thread_fn+0x10/0x10 [ 85.671609][ C0] ? __pfx_kthread+0x10/0x10 [ 85.676199][ C0] ret_from_fork+0x4b/0x80 [ 85.680626][ C0] ? __pfx_kthread+0x10/0x10 [ 85.685222][ C0] ret_from_fork_asm+0x1a/0x30 [ 85.690008][ C0] [ 85.693286][ C0] Kernel Offset: disabled [ 85.697652][ C0] Rebooting in 86400 seconds..