./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3324732132 <...> DUID 00:04:e6:bc:8e:bc:c3:7a:f3:fc:35:c5:a5:4f:9b:64:01:ce forked to background, child pid 4670 [ 41.958393][ T4671] 8021q: adding VLAN 0 to HW filter on device bond0 [ 41.968630][ T4671] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.3' (ECDSA) to the list of known hosts. execve("./syz-executor3324732132", ["./syz-executor3324732132"], 0x7ffeea52df60 /* 10 vars */) = 0 brk(NULL) = 0x555557326000 brk(0x555557326c40) = 0x555557326c40 arch_prctl(ARCH_SET_FS, 0x555557326300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3324732132", 4096) = 28 brk(0x555557347c40) = 0x555557347c40 brk(0x555557348000) = 0x555557348000 mprotect(0x7f0d5ac61000, 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 5007 attached , child_tidptr=0x5555573265d0) = 5007 [pid 5007] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5007] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5007] setsid() = 1 [pid 5007] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5007] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5007] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5007] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5007] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5007] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5007] unshare(CLONE_NEWNS) = 0 [pid 5007] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5007] unshare(CLONE_NEWIPC) = 0 [pid 5007] unshare(CLONE_NEWCGROUP) = 0 [pid 5007] unshare(CLONE_NEWUTS) = 0 [pid 5007] unshare(CLONE_SYSVSEM) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "16777216", 8) = 8 [pid 5007] close(3) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "536870912", 9) = 9 [pid 5007] close(3) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "1024", 4) = 4 [pid 5007] close(3) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "8192", 4) = 4 [pid 5007] close(3) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "1024", 4) = 4 [pid 5007] close(3) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "1024", 4) = 4 [pid 5007] close(3) = 0 [pid 5007] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5007] close(3) = 0 [pid 5007] getpid() = 1 [pid 5007] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<frame_sz = 131072 [ 72.384340][ T5007] WARNING: CPU: 0 PID: 5007 at net/core/filter.c:4120 bpf_xdp_adjust_tail+0x461/0x9a0 [ 72.393942][ T5007] Modules linked in: [ 72.397828][ T5007] CPU: 0 PID: 5007 Comm: syz-executor332 Not tainted 6.4.0-rc2-next-20230515-syzkaller #0 [ 72.407754][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 72.417929][ T5007] RIP: 0010:bpf_xdp_adjust_tail+0x461/0x9a0 [ 72.423893][ T5007] Code: ff 89 de e8 f1 fd 69 f9 84 db 0f 85 59 fd ff ff e8 04 02 6a f9 89 ee 48 c7 c7 00 4e 5f 8b c6 05 51 1f 4b 06 01 e8 ff ae 31 f9 <0f> 0b e9 38 fd ff ff e8 03 02 bd f9 e9 64 fc ff ff e8 f9 01 bd f9 [ 72.443547][ T5007] RSP: 0018:ffffc90003bdf8f8 EFLAGS: 00010286 [ 72.449616][ T5007] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 72.457626][ T5007] RDX: ffff888027ce0000 RSI: ffffffff814bd247 RDI: 0000000000000001 [ 72.465682][ T5007] RBP: 0000000000020000 R08: 0000000000000001 R09: 0000000000000000 [ 72.473708][ T5007] R10: 0000000000000000 R11: 0000000000000001 R12: ffffffffffffffea [ 72.481729][ T5007] R13: ffff88807dc2feef R14: 0000000000000000 R15: ffffc90003bdfab0 [ 72.489725][ T5007] FS: 0000555557326300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 72.498722][ T5007] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 72.505355][ T5007] CR2: 0000000020010000 CR3: 000000002bb7d000 CR4: 00000000003506f0 [ 72.513377][ T5007] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 72.521370][ T5007] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 72.529407][ T5007] Call Trace: [ 72.532726][ T5007] [ 72.535685][ T5007] ? skb_free_head+0x110/0x1b0 [ 72.540468][ T5007] ? skb_headers_offset_update+0x129/0x260 [ 72.546336][ T5007] bpf_prog_4add87e5301a4105+0x1a/0x1c [ 72.551842][ T5007] bpf_prog_run_generic_xdp+0x578/0x1210 [ 72.557503][ T5007] netif_receive_generic_xdp+0x2e8/0x630 [ 72.563197][ T5007] do_xdp_generic+0x9a/0x1b0 [ 72.567826][ T5007] ? __netif_receive_skb_list_core+0x8f0/0x8f0 [ 72.574071][ T5007] tun_get_user+0x1bb9/0x39c0 [ 72.578799][ T5007] ? ref_tracker_alloc+0x2cf/0x580 [ 72.583972][ T5007] ? tun_build_skb+0x1230/0x1230 [ 72.588952][ T5007] ? lock_downgrade+0x690/0x690 [ 72.593883][ T5007] tun_chr_write_iter+0xdf/0x200 [ 72.598860][ T5007] vfs_write+0x945/0xd50 [ 72.603171][ T5007] ? kernel_write+0x670/0x670 [ 72.607887][ T5007] ? recalc_sigpending_tsk+0x18b/0x1d0 [ 72.613438][ T5007] ? find_held_lock+0x2d/0x110 [ 72.618254][ T5007] ? lock_downgrade+0x690/0x690 [ 72.623172][ T5007] ? __fget_light+0x20a/0x270 [ 72.627881][ T5007] ksys_write+0x12b/0x250 [ 72.632269][ T5007] ? __ia32_sys_read+0xb0/0xb0 [ 72.637059][ T5007] ? lockdep_hardirqs_on+0x7d/0x100 [ 72.642314][ T5007] ? _raw_spin_unlock_irq+0x2e/0x50 [ 72.647547][ T5007] ? ptrace_notify+0xfe/0x140 [ 72.652285][ T5007] do_syscall_64+0x39/0xb0 [ 72.656750][ T5007] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 72.662700][ T5007] RIP: 0033:0x7f0d5abaea63 [ 72.667134][ T5007] Code: 5d 41 5c 41 5d 41 5e e9 9b fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18 [ 72.686778][ T5007] RSP: 002b:00007ffeec23f6d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 72.695238][ T5007] RAX: ffffffffffffffda RBX: 00007ffeec23f700 RCX: 00007f0d5abaea63 [ 72.703268][ T5007] RDX: 000000000000fdef RSI: 0000000020000300 RDI: 00000000000000c8 [ 72.711259][ T5007] RBP: 0000000000000003 R08: bb1414acec23f707 R09: bb1414acec23f707 [ 72.719280][ T5007] R10: bb1414acec23f707 R11: 0000000000000246 R12: 0000000000000000 [ 72.727286][ T5007] R13: 00007ffeec23f6f0 R14: 00007ffeec23f6e8 R15: 00007ffeec23f6e4 [ 72.735329][ T5007] [ 72.738366][ T5007] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 72.745648][ T5007] CPU: 0 PID: 5007 Comm: syz-executor332 Not tainted 6.4.0-rc2-next-20230515-syzkaller #0 [ 72.755543][ T5007] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 [ 72.765598][ T5007] Call Trace: [ 72.768874][ T5007] [ 72.771805][ T5007] dump_stack_lvl+0xd9/0x150 [ 72.776436][ T5007] panic+0x686/0x730 [ 72.780356][ T5007] ? panic_smp_self_stop+0xa0/0xa0 [ 72.785490][ T5007] ? show_trace_log_lvl+0x285/0x390 [ 72.790732][ T5007] ? bpf_xdp_adjust_tail+0x461/0x9a0 [ 72.796032][ T5007] check_panic_on_warn+0xb1/0xc0 [ 72.800998][ T5007] __warn+0xf2/0x390 [ 72.804912][ T5007] ? __wake_up_klogd.part.0+0x99/0xf0 [ 72.810306][ T5007] ? bpf_xdp_adjust_tail+0x461/0x9a0 [ 72.815613][ T5007] report_bug+0x2da/0x500 [ 72.819975][ T5007] handle_bug+0x3c/0x70 [ 72.824138][ T5007] exc_invalid_op+0x18/0x50 [ 72.828647][ T5007] asm_exc_invalid_op+0x1a/0x20 [ 72.833538][ T5007] RIP: 0010:bpf_xdp_adjust_tail+0x461/0x9a0 [ 72.839445][ T5007] Code: ff 89 de e8 f1 fd 69 f9 84 db 0f 85 59 fd ff ff e8 04 02 6a f9 89 ee 48 c7 c7 00 4e 5f 8b c6 05 51 1f 4b 06 01 e8 ff ae 31 f9 <0f> 0b e9 38 fd ff ff e8 03 02 bd f9 e9 64 fc ff ff e8 f9 01 bd f9 [ 72.859061][ T5007] RSP: 0018:ffffc90003bdf8f8 EFLAGS: 00010286 [ 72.865137][ T5007] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 72.873111][ T5007] RDX: ffff888027ce0000 RSI: ffffffff814bd247 RDI: 0000000000000001 [ 72.881083][ T5007] RBP: 0000000000020000 R08: 0000000000000001 R09: 0000000000000000 [ 72.889059][ T5007] R10: 0000000000000000 R11: 0000000000000001 R12: ffffffffffffffea [ 72.897032][ T5007] R13: ffff88807dc2feef R14: 0000000000000000 R15: ffffc90003bdfab0 [ 72.905016][ T5007] ? __warn_printk+0x187/0x310 [ 72.909807][ T5007] ? bpf_xdp_adjust_tail+0x461/0x9a0 [ 72.915109][ T5007] ? skb_free_head+0x110/0x1b0 [ 72.919893][ T5007] ? skb_headers_offset_update+0x129/0x260 [ 72.925724][ T5007] bpf_prog_4add87e5301a4105+0x1a/0x1c [ 72.931187][ T5007] bpf_prog_run_generic_xdp+0x578/0x1210 [ 72.936855][ T5007] netif_receive_generic_xdp+0x2e8/0x630 [ 72.942513][ T5007] do_xdp_generic+0x9a/0x1b0 [ 72.947123][ T5007] ? __netif_receive_skb_list_core+0x8f0/0x8f0 [ 72.953309][ T5007] tun_get_user+0x1bb9/0x39c0 [ 72.958009][ T5007] ? ref_tracker_alloc+0x2cf/0x580 [ 72.963141][ T5007] ? tun_build_skb+0x1230/0x1230 [ 72.968100][ T5007] ? lock_downgrade+0x690/0x690 [ 72.972983][ T5007] tun_chr_write_iter+0xdf/0x200 [ 72.977939][ T5007] vfs_write+0x945/0xd50 [ 72.982201][ T5007] ? kernel_write+0x670/0x670 [ 72.986887][ T5007] ? recalc_sigpending_tsk+0x18b/0x1d0 [ 72.992359][ T5007] ? find_held_lock+0x2d/0x110 [ 72.997142][ T5007] ? lock_downgrade+0x690/0x690 [ 73.002015][ T5007] ? __fget_light+0x20a/0x270 [ 73.006706][ T5007] ksys_write+0x12b/0x250 [ 73.011047][ T5007] ? __ia32_sys_read+0xb0/0xb0 [ 73.015822][ T5007] ? lockdep_hardirqs_on+0x7d/0x100 [ 73.021030][ T5007] ? _raw_spin_unlock_irq+0x2e/0x50 [ 73.026245][ T5007] ? ptrace_notify+0xfe/0x140 [ 73.030955][ T5007] do_syscall_64+0x39/0xb0 [ 73.035396][ T5007] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 73.041308][ T5007] RIP: 0033:0x7f0d5abaea63 [ 73.045729][ T5007] Code: 5d 41 5c 41 5d 41 5e e9 9b fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18 [ 73.065340][ T5007] RSP: 002b:00007ffeec23f6d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 73.073765][ T5007] RAX: ffffffffffffffda RBX: 00007ffeec23f700 RCX: 00007f0d5abaea63 [ 73.081747][ T5007] RDX: 000000000000fdef RSI: 0000000020000300 RDI: 00000000000000c8 [ 73.089723][ T5007] RBP: 0000000000000003 R08: bb1414acec23f707 R09: bb1414acec23f707 [ 73.097703][ T5007] R10: bb1414acec23f707 R11: 0000000000000246 R12: 0000000000000000 [ 73.105681][ T5007] R13: 00007ffeec23f6f0 R14: 00007ffeec23f6e8 R15: 00007ffeec23f6e4 [ 73.113676][ T5007] [ 73.116995][ T5007] Kernel Offset: disabled [ 73.121400][ T5007] Rebooting in 86400 seconds..