./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1169763557 <...> Warning: Permanently added '10.128.10.57' (ECDSA) to the list of known hosts. execve("./syz-executor1169763557", ["./syz-executor1169763557"], 0x7ffc18afe880 /* 10 vars */) = 0 brk(NULL) = 0x555556647000 brk(0x555556647c40) = 0x555556647c40 arch_prctl(ARCH_SET_FS, 0x555556647300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor1169763557", 4096) = 28 brk(0x555556668c40) = 0x555556668c40 brk(0x555556669000) = 0x555556669000 mprotect(0x7f3b914b5000, 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 5081 attached , child_tidptr=0x5555566475d0) = 5081 [pid 5081] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 5081] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5081] setsid() = 1 [pid 5081] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 5081] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 5081] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 5081] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 5081] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 5081] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 5081] unshare(CLONE_NEWNS) = 0 [pid 5081] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 5081] unshare(CLONE_NEWIPC) = 0 [pid 5081] unshare(CLONE_NEWCGROUP) = 0 [pid 5081] unshare(CLONE_NEWUTS) = 0 [pid 5081] unshare(CLONE_SYSVSEM) = 0 [pid 5081] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5081] write(3, "16777216", 8) = 8 [pid 5081] close(3) = 0 [pid 5081] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 5081] write(3, "536870912", 9) = 9 [pid 5081] close(3) = 0 [pid 5081] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5081] write(3, "1024", 4) = 4 [pid 5081] close(3) = 0 [pid 5081] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 5081] write(3, "8192", 4) = 4 [pid 5081] close(3) = 0 [pid 5081] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 5081] write(3, "1024", 4) = 4 [pid 5081] close(3) = 0 [pid 5081] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 5081] write(3, "1024", 4) = 4 [pid 5081] close(3) = 0 [pid 5081] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 5081] write(3, "1024 1048576 500 1024", 21) = 21 [pid 5081] close(3) = 0 [pid 5081] getpid() = 1 [pid 5081] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<frame_sz = 131072 [ 42.072289][ T5081] WARNING: CPU: 0 PID: 5081 at net/core/filter.c:4094 bpf_xdp_adjust_tail+0x461/0x9a0 [ 42.081894][ T5081] Modules linked in: [ 42.085826][ T5081] CPU: 0 PID: 5081 Comm: syz-executor116 Not tainted 6.3.0-rc2-syzkaller-00006-gfc89d7fb499b #0 [ 42.096333][ T5081] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 42.106410][ T5081] RIP: 0010:bpf_xdp_adjust_tail+0x461/0x9a0 [ 42.112296][ T5081] Code: ff 89 de e8 91 5b 6a f9 84 db 0f 85 59 fd ff ff e8 74 5f 6a f9 89 ee 48 c7 c7 60 a7 5d 8b c6 05 eb 56 49 06 01 e8 ef 7b 32 f9 <0f> 0b e9 38 fd ff ff e8 93 a5 bb f9 e9 64 fc ff ff e8 89 a5 bb f9 [ 42.131930][ T5081] RSP: 0018:ffffc90003b9f8f0 EFLAGS: 00010286 [ 42.138018][ T5081] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 42.146009][ T5081] RDX: ffff888022d557c0 RSI: ffffffff814bf3a7 RDI: 0000000000000001 [ 42.153999][ T5081] RBP: 0000000000020000 R08: 0000000000000001 R09: 0000000000000000 [ 42.161974][ T5081] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffffffffffea [ 42.169978][ T5081] R13: ffff888072fefeef R14: 0000000000000000 R15: ffffc90003b9faa8 [ 42.177978][ T5081] FS: 0000555556647300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 42.186936][ T5081] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.193641][ T5081] CR2: 0000000020011000 CR3: 0000000072f53000 CR4: 0000000000350ef0 [ 42.201669][ T5081] Call Trace: [ 42.205124][ T5081] [ 42.208067][ T5081] ? skb_free_head+0x108/0x1a0 [ 42.212829][ T5081] ? skb_headers_offset_update+0x129/0x250 [ 42.218673][ T5081] bpf_prog_4add87e5301a4105+0x1a/0x1c [ 42.224183][ T5081] bpf_prog_run_generic_xdp+0x578/0x1210 [ 42.229867][ T5081] netif_receive_generic_xdp+0x2e8/0x8b0 [ 42.235572][ T5081] do_xdp_generic+0x9a/0x1b0 [ 42.240185][ T5081] ? __netif_receive_skb_list_core+0x8f0/0x8f0 [ 42.246416][ T5081] tun_get_user+0x21f0/0x3950 [ 42.251107][ T5081] ? tun_build_skb+0x1230/0x1230 [ 42.256114][ T5081] ? lock_downgrade+0x690/0x690 [ 42.260980][ T5081] tun_chr_write_iter+0xdf/0x200 [ 42.266048][ T5081] vfs_write+0x9ed/0xe10 [ 42.270293][ T5081] ? kernel_write+0x670/0x670 [ 42.275021][ T5081] ? find_held_lock+0x2d/0x110 [ 42.279801][ T5081] ? lock_downgrade+0x690/0x690 [ 42.284678][ T5081] ? __fget_light+0x20a/0x270 [ 42.289375][ T5081] ksys_write+0x12b/0x250 [ 42.293686][ T5081] ? __ia32_sys_read+0xb0/0xb0 [ 42.298466][ T5081] ? lockdep_hardirqs_on+0x7d/0x100 [ 42.303679][ T5081] ? _raw_spin_unlock_irq+0x2e/0x50 [ 42.308986][ T5081] ? ptrace_notify+0xfe/0x140 [ 42.313673][ T5081] do_syscall_64+0x39/0xb0 [ 42.318114][ T5081] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 42.324039][ T5081] RIP: 0033:0x7f3b91402c33 [ 42.328436][ T5081] 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 [ 42.348081][ T5081] RSP: 002b:00007fff975c5ec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 42.356539][ T5081] RAX: ffffffffffffffda RBX: 00007fff975c5ef0 RCX: 00007f3b91402c33 [ 42.364557][ T5081] RDX: 000000000000fdef RSI: 0000000020001600 RDI: 00000000000000c8 [ 42.372536][ T5081] RBP: 00007fff975c5f50 R08: 0000000000000000 R09: 0000000000000000 [ 42.380551][ T5081] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 [ 42.388543][ T5081] R13: 00007fff975c5f00 R14: 00007fff975c5f20 R15: 00007fff975c5ee8 [ 42.396557][ T5081] [ 42.399574][ T5081] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 42.406835][ T5081] CPU: 0 PID: 5081 Comm: syz-executor116 Not tainted 6.3.0-rc2-syzkaller-00006-gfc89d7fb499b #0 [ 42.417258][ T5081] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [ 42.427293][ T5081] Call Trace: [ 42.430569][ T5081] [ 42.433478][ T5081] dump_stack_lvl+0xd9/0x150 [ 42.438060][ T5081] panic+0x688/0x730 [ 42.441939][ T5081] ? panic_smp_self_stop+0x90/0x90 [ 42.447032][ T5081] ? show_trace_log_lvl+0x285/0x390 [ 42.452232][ T5081] ? bpf_xdp_adjust_tail+0x461/0x9a0 [ 42.457585][ T5081] check_panic_on_warn+0xb1/0xc0 [ 42.462507][ T5081] __warn+0xf2/0x460 [ 42.466384][ T5081] ? bpf_xdp_adjust_tail+0x461/0x9a0 [ 42.471656][ T5081] report_bug+0x2da/0x500 [ 42.475979][ T5081] handle_bug+0x3c/0x70 [ 42.480153][ T5081] exc_invalid_op+0x18/0x50 [ 42.484652][ T5081] asm_exc_invalid_op+0x1a/0x20 [ 42.489501][ T5081] RIP: 0010:bpf_xdp_adjust_tail+0x461/0x9a0 [ 42.495387][ T5081] Code: ff 89 de e8 91 5b 6a f9 84 db 0f 85 59 fd ff ff e8 74 5f 6a f9 89 ee 48 c7 c7 60 a7 5d 8b c6 05 eb 56 49 06 01 e8 ef 7b 32 f9 <0f> 0b e9 38 fd ff ff e8 93 a5 bb f9 e9 64 fc ff ff e8 89 a5 bb f9 [ 42.515105][ T5081] RSP: 0018:ffffc90003b9f8f0 EFLAGS: 00010286 [ 42.521166][ T5081] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 42.529154][ T5081] RDX: ffff888022d557c0 RSI: ffffffff814bf3a7 RDI: 0000000000000001 [ 42.537383][ T5081] RBP: 0000000000020000 R08: 0000000000000001 R09: 0000000000000000 [ 42.545345][ T5081] R10: 0000000000000000 R11: 0000000000000000 R12: ffffffffffffffea [ 42.553335][ T5081] R13: ffff888072fefeef R14: 0000000000000000 R15: ffffc90003b9faa8 [ 42.561389][ T5081] ? __warn_printk+0x187/0x310 [ 42.566162][ T5081] ? skb_free_head+0x108/0x1a0 [ 42.570925][ T5081] ? skb_headers_offset_update+0x129/0x250 [ 42.576833][ T5081] bpf_prog_4add87e5301a4105+0x1a/0x1c [ 42.582283][ T5081] bpf_prog_run_generic_xdp+0x578/0x1210 [ 42.588070][ T5081] netif_receive_generic_xdp+0x2e8/0x8b0 [ 42.593737][ T5081] do_xdp_generic+0x9a/0x1b0 [ 42.598334][ T5081] ? __netif_receive_skb_list_core+0x8f0/0x8f0 [ 42.604506][ T5081] tun_get_user+0x21f0/0x3950 [ 42.609195][ T5081] ? tun_build_skb+0x1230/0x1230 [ 42.614216][ T5081] ? lock_downgrade+0x690/0x690 [ 42.619073][ T5081] tun_chr_write_iter+0xdf/0x200 [ 42.624110][ T5081] vfs_write+0x9ed/0xe10 [ 42.628346][ T5081] ? kernel_write+0x670/0x670 [ 42.633109][ T5081] ? find_held_lock+0x2d/0x110 [ 42.637903][ T5081] ? lock_downgrade+0x690/0x690 [ 42.642791][ T5081] ? __fget_light+0x20a/0x270 [ 42.647499][ T5081] ksys_write+0x12b/0x250 [ 42.651824][ T5081] ? __ia32_sys_read+0xb0/0xb0 [ 42.656669][ T5081] ? lockdep_hardirqs_on+0x7d/0x100 [ 42.661868][ T5081] ? _raw_spin_unlock_irq+0x2e/0x50 [ 42.667155][ T5081] ? ptrace_notify+0xfe/0x140 [ 42.671851][ T5081] do_syscall_64+0x39/0xb0 [ 42.676391][ T5081] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 42.682296][ T5081] RIP: 0033:0x7f3b91402c33 [ 42.686797][ T5081] 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 [ 42.706438][ T5081] RSP: 002b:00007fff975c5ec8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 [ 42.714850][ T5081] RAX: ffffffffffffffda RBX: 00007fff975c5ef0 RCX: 00007f3b91402c33 [ 42.722816][ T5081] RDX: 000000000000fdef RSI: 0000000020001600 RDI: 00000000000000c8 [ 42.730783][ T5081] RBP: 00007fff975c5f50 R08: 0000000000000000 R09: 0000000000000000 [ 42.738747][ T5081] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 [ 42.746729][ T5081] R13: 00007fff975c5f00 R14: 00007fff975c5f20 R15: 00007fff975c5ee8 [ 42.754708][ T5081] [ 42.758401][ T5081] Kernel Offset: disabled [ 42.762779][ T5081] Rebooting in 86400 seconds..