./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor398974180 <...> Warning: Permanently added '10.128.0.85' (ECDSA) to the list of known hosts. execve("./syz-executor398974180", ["./syz-executor398974180"], 0x7fffa530ca50 /* 10 vars */) = 0 brk(NULL) = 0x555555576000 brk(0x555555576c40) = 0x555555576c40 arch_prctl(ARCH_SET_FS, 0x555555576300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor398974180", 4096) = 27 brk(0x555555597c40) = 0x555555597c40 brk(0x555555598000) = 0x555555598000 mprotect(0x7f3f54944000, 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 5009 attached , child_tidptr=0x5555555765d0) = 5009 [pid 5009] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5009] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5009] setsid() = 1 [pid 5009] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5009] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5009] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5009] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5009] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5009] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5009] unshare(CLONE_NEWNS) = 0 [pid 5009] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5009] unshare(CLONE_NEWIPC) = 0 [pid 5009] unshare(CLONE_NEWCGROUP) = 0 [pid 5009] unshare(CLONE_NEWUTS) = 0 [pid 5009] unshare(CLONE_SYSVSEM) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "16777216", 8) = 8 [pid 5009] close(3) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "536870912", 9) = 9 [pid 5009] close(3) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "1024", 4) = 4 [pid 5009] close(3) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "8192", 4) = 4 [pid 5009] close(3) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "1024", 4) = 4 [pid 5009] close(3) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "1024", 4) = 4 [pid 5009] close(3) = 0 [pid 5009] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5009] close(3) = 0 [pid 5009] getpid() = 1 [pid 5009] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<frame_sz = 131072 [ 78.245698][ T5009] WARNING: CPU: 0 PID: 5009 at net/core/filter.c:4120 bpf_xdp_adjust_tail+0x461/0x9a0 [ 78.255357][ T5009] Modules linked in: [ 78.259309][ T5009] CPU: 0 PID: 5009 Comm: syz-executor398 Not tainted 6.4.0-rc6-syzkaller-00201-g4aaf2c52834b #0 [ 78.269785][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 78.279928][ T5009] RIP: 0010:bpf_xdp_adjust_tail+0x461/0x9a0 [ 78.285866][ T5009] Code: ff 89 de e8 11 3b 6b f9 84 db 0f 85 59 fd ff ff e8 24 3f 6b f9 89 ee 48 c7 c7 80 f6 5e 8b c6 05 b7 d5 4b 06 01 e8 5f fa 32 f9 <0f> 0b e9 38 fd ff ff e8 a3 09 be f9 e9 64 fc ff ff e8 99 09 be f9 [ 78.305883][ T5009] RSP: 0018:ffffc90003b3f8f8 EFLAGS: 00010286 [ 78.312051][ T5009] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 78.320121][ T5009] RDX: ffff88802a1fd940 RSI: ffffffff814c03b7 RDI: 0000000000000001 [ 78.328179][ T5009] RBP: 0000000000020000 R08: 0000000000000001 R09: 0000000000000000 [ 78.336344][ T5009] R10: 0000000000000000 R11: 0000000000000001 R12: ffffffffffffffea [ 78.344450][ T5009] R13: ffff88807248feef R14: 0000000000000000 R15: ffffc90003b3fab0 [ 78.352548][ T5009] FS: 0000555555576300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 78.361614][ T5009] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 78.368377][ T5009] CR2: 0000000020010000 CR3: 0000000075b88000 CR4: 00000000003506f0 [ 78.376436][ T5009] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 78.384430][ T5009] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 78.392503][ T5009] Call Trace: [ 78.395809][ T5009] [ 78.398815][ T5009] ? __warn+0xe6/0x390 [ 78.402945][ T5009] ? __wake_up_klogd.part.0+0x99/0xf0 [ 78.408417][ T5009] ? bpf_xdp_adjust_tail+0x461/0x9a0 [ 78.413758][ T5009] ? report_bug+0x2da/0x500 [ 78.418365][ T5009] ? handle_bug+0x3c/0x70 [ 78.422748][ T5009] ? exc_invalid_op+0x18/0x50 [ 78.427517][ T5009] ? asm_exc_invalid_op+0x1a/0x20 [ 78.432611][ T5009] ? __warn_printk+0x187/0x310 [ 78.437488][ T5009] ? bpf_xdp_adjust_tail+0x461/0x9a0 [ 78.442840][ T5009] ? bpf_xdp_adjust_tail+0x461/0x9a0 [ 78.448246][ T5009] ? skb_free_head+0x110/0x1b0 [ 78.453064][ T5009] ? skb_headers_offset_update+0x129/0x260 [ 78.458967][ T5009] bpf_prog_4add87e5301a4105+0x1a/0x1c [ 78.464465][ T5009] bpf_prog_run_generic_xdp+0x578/0x1210 [ 78.470208][ T5009] netif_receive_generic_xdp+0x2e8/0x7d0 [ 78.475891][ T5009] do_xdp_generic+0x9a/0x1b0 [ 78.480557][ T5009] ? __netif_receive_skb_list_core+0x8f0/0x8f0 [ 78.486859][ T5009] tun_get_user+0x1bf3/0x3b00 [ 78.491569][ T5009] ? ref_tracker_alloc+0x2cf/0x580 [ 78.496759][ T5009] ? tun_build_skb+0x1230/0x1230 [ 78.501756][ T5009] ? lock_downgrade+0x690/0x690 [ 78.506710][ T5009] tun_chr_write_iter+0xdf/0x200 [ 78.511694][ T5009] vfs_write+0x945/0xd50 [ 78.515951][ T5009] ? kernel_write+0x670/0x670 [ 78.520693][ T5009] ? recalc_sigpending_tsk+0x18b/0x1d0 [ 78.526286][ T5009] ? find_held_lock+0x2d/0x110 [ 78.531077][ T5009] ? lock_downgrade+0x690/0x690 [ 78.535950][ T5009] ? __fget_light+0x20a/0x270 [ 78.540725][ T5009] ksys_write+0x12b/0x250 [ 78.545096][ T5009] ? __ia32_sys_read+0xb0/0xb0 [ 78.550820][ T5009] ? lockdep_hardirqs_on+0x7d/0x100 [ 78.556130][ T5009] ? _raw_spin_unlock_irq+0x2e/0x50 [ 78.561393][ T5009] ? ptrace_notify+0xfe/0x140 [ 78.566168][ T5009] do_syscall_64+0x39/0xb0 [ 78.570634][ T5009] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 78.576638][ T5009] RIP: 0033:0x7f3f54891be3 [ 78.581083][ T5009] 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 [ 78.600763][ T5009] RSP: 002b:00007fffae566fd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 78.609246][ T5009] RAX: ffffffffffffffda RBX: 00007fffae567000 RCX: 00007f3f54891be3 [ 78.617281][ T5009] RDX: 000000000000fdef RSI: 0000000020000580 RDI: 00000000000000c8 [ 78.625297][ T5009] RBP: 0000000000000003 R08: bb1414acae567007 R09: bb1414acae567007 [ 78.633338][ T5009] R10: bb1414acae567007 R11: 0000000000000246 R12: 0000000000000000 [ 78.641374][ T5009] R13: 00007fffae566ff0 R14: 00007fffae566fe8 R15: 00007fffae566fe4 [ 78.649434][ T5009] [ 78.652489][ T5009] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 78.659773][ T5009] CPU: 0 PID: 5009 Comm: syz-executor398 Not tainted 6.4.0-rc6-syzkaller-00201-g4aaf2c52834b #0 [ 78.670196][ T5009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 [ 78.680260][ T5009] Call Trace: [ 78.683546][ T5009] [ 78.686486][ T5009] dump_stack_lvl+0xd9/0x150 [ 78.691109][ T5009] panic+0x686/0x730 [ 78.695034][ T5009] ? panic_smp_self_stop+0xa0/0xa0 [ 78.700190][ T5009] ? show_trace_log_lvl+0x284/0x390 [ 78.705426][ T5009] ? bpf_xdp_adjust_tail+0x461/0x9a0 [ 78.710742][ T5009] check_panic_on_warn+0xb1/0xc0 [ 78.715721][ T5009] __warn+0xf2/0x390 [ 78.719652][ T5009] ? __wake_up_klogd.part.0+0x99/0xf0 [ 78.725060][ T5009] ? bpf_xdp_adjust_tail+0x461/0x9a0 [ 78.730383][ T5009] report_bug+0x2da/0x500 [ 78.734760][ T5009] handle_bug+0x3c/0x70 [ 78.738938][ T5009] exc_invalid_op+0x18/0x50 [ 78.743465][ T5009] asm_exc_invalid_op+0x1a/0x20 [ 78.748356][ T5009] RIP: 0010:bpf_xdp_adjust_tail+0x461/0x9a0 [ 78.754287][ T5009] Code: ff 89 de e8 11 3b 6b f9 84 db 0f 85 59 fd ff ff e8 24 3f 6b f9 89 ee 48 c7 c7 80 f6 5e 8b c6 05 b7 d5 4b 06 01 e8 5f fa 32 f9 <0f> 0b e9 38 fd ff ff e8 a3 09 be f9 e9 64 fc ff ff e8 99 09 be f9 [ 78.773946][ T5009] RSP: 0018:ffffc90003b3f8f8 EFLAGS: 00010286 [ 78.780041][ T5009] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 78.788039][ T5009] RDX: ffff88802a1fd940 RSI: ffffffff814c03b7 RDI: 0000000000000001 [ 78.796041][ T5009] RBP: 0000000000020000 R08: 0000000000000001 R09: 0000000000000000 [ 78.804032][ T5009] R10: 0000000000000000 R11: 0000000000000001 R12: ffffffffffffffea [ 78.812021][ T5009] R13: ffff88807248feef R14: 0000000000000000 R15: ffffc90003b3fab0 [ 78.820069][ T5009] ? __warn_printk+0x187/0x310 [ 78.824881][ T5009] ? bpf_xdp_adjust_tail+0x461/0x9a0 [ 78.830202][ T5009] ? skb_free_head+0x110/0x1b0 [ 78.835003][ T5009] ? skb_headers_offset_update+0x129/0x260 [ 78.840848][ T5009] bpf_prog_4add87e5301a4105+0x1a/0x1c [ 78.846334][ T5009] bpf_prog_run_generic_xdp+0x578/0x1210 [ 78.852059][ T5009] netif_receive_generic_xdp+0x2e8/0x7d0 [ 78.857732][ T5009] do_xdp_generic+0x9a/0x1b0 [ 78.862364][ T5009] ? __netif_receive_skb_list_core+0x8f0/0x8f0 [ 78.869604][ T5009] tun_get_user+0x1bf3/0x3b00 [ 78.874327][ T5009] ? ref_tracker_alloc+0x2cf/0x580 [ 78.879478][ T5009] ? tun_build_skb+0x1230/0x1230 [ 78.884450][ T5009] ? lock_downgrade+0x690/0x690 [ 78.889352][ T5009] tun_chr_write_iter+0xdf/0x200 [ 78.894318][ T5009] vfs_write+0x945/0xd50 [ 78.898607][ T5009] ? kernel_write+0x670/0x670 [ 78.903302][ T5009] ? recalc_sigpending_tsk+0x18b/0x1d0 [ 78.908788][ T5009] ? find_held_lock+0x2d/0x110 [ 78.913592][ T5009] ? lock_downgrade+0x690/0x690 [ 78.918614][ T5009] ? __fget_light+0x20a/0x270 [ 78.923335][ T5009] ksys_write+0x12b/0x250 [ 78.927686][ T5009] ? __ia32_sys_read+0xb0/0xb0 [ 78.932468][ T5009] ? lockdep_hardirqs_on+0x7d/0x100 [ 78.937698][ T5009] ? _raw_spin_unlock_irq+0x2e/0x50 [ 78.942931][ T5009] ? ptrace_notify+0xfe/0x140 [ 78.947640][ T5009] do_syscall_64+0x39/0xb0 [ 78.952078][ T5009] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 78.958025][ T5009] RIP: 0033:0x7f3f54891be3 [ 78.962459][ T5009] 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 [ 78.982089][ T5009] RSP: 002b:00007fffae566fd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 78.990529][ T5009] RAX: ffffffffffffffda RBX: 00007fffae567000 RCX: 00007f3f54891be3 [ 78.998524][ T5009] RDX: 000000000000fdef RSI: 0000000020000580 RDI: 00000000000000c8 [ 79.006513][ T5009] RBP: 0000000000000003 R08: bb1414acae567007 R09: bb1414acae567007 [ 79.014505][ T5009] R10: bb1414acae567007 R11: 0000000000000246 R12: 0000000000000000 [ 79.022581][ T5009] R13: 00007fffae566ff0 R14: 00007fffae566fe8 R15: 00007fffae566fe4 [ 79.030587][ T5009] [ 79.033834][ T5009] Kernel Offset: disabled [ 79.038246][ T5009] Rebooting in 86400 seconds..