./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor663634864 <...> Warning: Permanently added '10.128.1.34' (ED25519) to the list of known hosts. execve("./syz-executor663634864", ["./syz-executor663634864"], 0x7ffe70304690 /* 10 vars */) = 0 brk(NULL) = 0x5555560b7000 brk(0x5555560b7d00) = 0x5555560b7d00 arch_prctl(ARCH_SET_FS, 0x5555560b7380) = 0 set_tid_address(0x5555560b7650) = 5047 set_robust_list(0x5555560b7660, 24) = 0 rseq(0x5555560b7ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor663634864", 4096) = 27 getrandom("\x56\xa9\xa4\xdf\x74\x3a\x88\x04", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555560b7d00 brk(0x5555560d8d00) = 0x5555560d8d00 brk(0x5555560d9000) = 0x5555560d9000 mprotect(0x7fb7a5459000, 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 socket(AF_NETLINK, SOCK_RAW, NETLINK_ROUTE) = 3 write(3, "#! ./file0\n", 11) = 11 openat(AT_FDCWD, "/dev/net/tun", O_RDONLY) = 4 socket(AF_NETLINK, SOCK_RAW|SOCK_NONBLOCK, NETLINK_ROUTE) = 5 sendmsg(5, {msg_name=NULL, msg_namelen=919, msg_iov=[{iov_base=NULL, iov_len=65424}], msg_iovlen=1, msg_controllen=0, msg_flags=0}, 0) = -1 EFAULT (Bad address) getsockname(5, {sa_family=AF_NETLINK, sa_data="\x00\x00\x56\xae\x79\xa7\x00\x00"}, [10 => 12]) = 0 ioctl(4, TUNSETIFINDEX, 0x20000040) = 0 [ 92.778279][ T5047] ------------[ cut here ]------------ [ 92.784063][ T5047] WARNING: CPU: 0 PID: 5047 at net/core/dev.c:9600 dev_index_reserve+0x1a2/0x1c0 [ 92.793266][ T5047] Modules linked in: [ 92.797164][ T5047] CPU: 0 PID: 5047 Comm: syz-executor663 Not tainted 6.6.0-rc5-syzkaller-00157-ge8c127b05766 #0 [ 92.807648][ T5047] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 [ 92.817788][ T5047] RIP: 0010:dev_index_reserve+0x1a2/0x1c0 [ 92.823627][ T5047] Code: 00 31 d2 4d 8d 45 50 b9 ff ff ff 7f 48 8d 74 24 20 e8 02 4f 03 02 4c 89 e7 89 c3 e8 c8 58 12 02 e9 48 ff ff ff e8 fe 7b 56 f9 <0f> 0b bb ea ff ff ff e9 52 ff ff ff e8 bd a0 0e 02 66 66 2e 0f 1f [ 92.843310][ T5047] RSP: 0018:ffffc900039efc30 EFLAGS: 00010293 [ 92.849387][ T5047] RAX: 0000000000000000 RBX: 00000000a779ae56 RCX: 0000000000000000 [ 92.857416][ T5047] RDX: ffff88801caf0000 RSI: ffffffff88314ac2 RDI: 0000000000000005 [ 92.865518][ T5047] RBP: 1ffff9200073df86 R08: 0000000000000005 R09: 0000000000000000 [ 92.873551][ T5047] R10: 00000000a779ae56 R11: ffffffff910d1250 R12: ffff888027174010 [ 92.881556][ T5047] R13: ffffffff9260f200 R14: ffff888027174000 R15: ffff8880271740f8 [ 92.889605][ T5047] FS: 00005555560b7380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 [ 92.898594][ T5047] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 92.905271][ T5047] CR2: 00000000005fdeb8 CR3: 0000000072ff4000 CR4: 00000000003506f0 [ 92.913322][ T5047] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 92.921312][ T5047] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 92.929377][ T5047] Call Trace: [ 92.932706][ T5047] [ 92.935649][ T5047] ? show_regs+0x8f/0xa0 [ 92.939907][ T5047] ? __warn+0xe6/0x380 [ 92.944075][ T5047] ? dev_index_reserve+0x1a2/0x1c0 [ 92.949241][ T5047] ? report_bug+0x3bc/0x580 [ 92.953838][ T5047] ? handle_bug+0x3c/0x70 [ 92.958220][ T5047] ? exc_invalid_op+0x17/0x40 [ 92.963008][ T5047] ? asm_exc_invalid_op+0x1a/0x20 [ 92.968519][ T5047] ? dev_index_reserve+0x1a2/0x1c0 [ 92.973714][ T5047] ? dev_index_reserve+0x1a2/0x1c0 [ 92.978869][ T5047] ? tc_run+0x530/0x530 [ 92.983111][ T5047] ? tun_net_init+0x4f2/0x6d0 [ 92.987826][ T5047] ? tun_attach.isra.0+0x1790/0x1790 [ 92.993178][ T5047] register_netdevice+0x69a/0x1490 [ 92.998327][ T5047] ? unregister_netdevice_queue+0x3c0/0x3c0 [ 93.004303][ T5047] ? alloc_netdev_mqs+0xee6/0x1290 [ 93.009461][ T5047] __tun_chr_ioctl+0x3091/0x4700 [ 93.014476][ T5047] ? tun_chr_read_iter+0x290/0x290 [ 93.019643][ T5047] ? bpf_lsm_file_ioctl+0x9/0x10 [ 93.024662][ T5047] ? tun_chr_compat_ioctl+0x30/0x30 [ 93.029938][ T5047] __x64_sys_ioctl+0x18f/0x210 [ 93.034771][ T5047] do_syscall_64+0x38/0xb0 [ 93.039228][ T5047] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 93.045217][ T5047] RIP: 0033:0x7fb7a53e6469 [ 93.049667][ T5047] Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 93.069374][ T5047] RSP: 002b:00007ffc31ae90c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 93.077876][ T5047] RAX: ffffffffffffffda RBX: 00007ffc31ae9298 RCX: 00007fb7a53e6469 [ 93.085949][ T5047] RDX: 0000000020000200 RSI: 00000000400454ca RDI: 0000000000000004 [ 93.093996][ T5047] RBP: 00007fb7a5459610 R08: 00007ffc31ae9298 R09: 00007ffc31ae9298 [ 93.102078][ T5047] R10: 00007ffc31ae9298 R11: 0000000000000246 R12: 0000000000000001 [ 93.110065][ T5047] R13: 00007ffc31ae9288 R14: 0000000000000001 R15: 0000000000000001 [ 93.118116][ T5047] [ 93.121159][ T5047] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 93.128441][ T5047] CPU: 0 PID: 5047 Comm: syz-executor663 Not tainted 6.6.0-rc5-syzkaller-00157-ge8c127b05766 #0 [ 93.138860][ T5047] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 [ 93.148920][ T5047] Call Trace: [ 93.152201][ T5047] [ 93.155136][ T5047] dump_stack_lvl+0xd9/0x1b0 [ 93.159739][ T5047] panic+0x6a6/0x750 [ 93.163650][ T5047] ? panic_smp_self_stop+0xa0/0xa0 [ 93.168790][ T5047] ? dev_index_reserve+0x1a2/0x1c0 [ 93.173918][ T5047] check_panic_on_warn+0xab/0xb0 [ 93.178873][ T5047] __warn+0xf2/0x380 [ 93.182781][ T5047] ? dev_index_reserve+0x1a2/0x1c0 [ 93.187921][ T5047] report_bug+0x3bc/0x580 [ 93.192266][ T5047] handle_bug+0x3c/0x70 [ 93.196438][ T5047] exc_invalid_op+0x17/0x40 [ 93.200954][ T5047] asm_exc_invalid_op+0x1a/0x20 [ 93.205822][ T5047] RIP: 0010:dev_index_reserve+0x1a2/0x1c0 [ 93.211559][ T5047] Code: 00 31 d2 4d 8d 45 50 b9 ff ff ff 7f 48 8d 74 24 20 e8 02 4f 03 02 4c 89 e7 89 c3 e8 c8 58 12 02 e9 48 ff ff ff e8 fe 7b 56 f9 <0f> 0b bb ea ff ff ff e9 52 ff ff ff e8 bd a0 0e 02 66 66 2e 0f 1f [ 93.231200][ T5047] RSP: 0018:ffffc900039efc30 EFLAGS: 00010293 [ 93.237294][ T5047] RAX: 0000000000000000 RBX: 00000000a779ae56 RCX: 0000000000000000 [ 93.245279][ T5047] RDX: ffff88801caf0000 RSI: ffffffff88314ac2 RDI: 0000000000000005 [ 93.253271][ T5047] RBP: 1ffff9200073df86 R08: 0000000000000005 R09: 0000000000000000 [ 93.261269][ T5047] R10: 00000000a779ae56 R11: ffffffff910d1250 R12: ffff888027174010 [ 93.269260][ T5047] R13: ffffffff9260f200 R14: ffff888027174000 R15: ffff8880271740f8 [ 93.277261][ T5047] ? dev_index_reserve+0x1a2/0x1c0 [ 93.282407][ T5047] ? tc_run+0x530/0x530 [ 93.286586][ T5047] ? tun_net_init+0x4f2/0x6d0 [ 93.291285][ T5047] ? tun_attach.isra.0+0x1790/0x1790 [ 93.296601][ T5047] register_netdevice+0x69a/0x1490 [ 93.301737][ T5047] ? unregister_netdevice_queue+0x3c0/0x3c0 [ 93.307656][ T5047] ? alloc_netdev_mqs+0xee6/0x1290 [ 93.312801][ T5047] __tun_chr_ioctl+0x3091/0x4700 [ 93.317808][ T5047] ? tun_chr_read_iter+0x290/0x290 [ 93.322968][ T5047] ? bpf_lsm_file_ioctl+0x9/0x10 [ 93.327936][ T5047] ? tun_chr_compat_ioctl+0x30/0x30 [ 93.333197][ T5047] __x64_sys_ioctl+0x18f/0x210 [ 93.338002][ T5047] do_syscall_64+0x38/0xb0 [ 93.342460][ T5047] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 93.348386][ T5047] RIP: 0033:0x7fb7a53e6469 [ 93.352841][ T5047] Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 93.372475][ T5047] RSP: 002b:00007ffc31ae90c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 93.380908][ T5047] RAX: ffffffffffffffda RBX: 00007ffc31ae9298 RCX: 00007fb7a53e6469 [ 93.388897][ T5047] RDX: 0000000020000200 RSI: 00000000400454ca RDI: 0000000000000004 [ 93.396888][ T5047] RBP: 00007fb7a5459610 R08: 00007ffc31ae9298 R09: 00007ffc31ae9298 [ 93.404876][ T5047] R10: 00007ffc31ae9298 R11: 0000000000000246 R12: 0000000000000001 [ 93.412865][ T5047] R13: 00007ffc31ae9288 R14: 0000000000000001 R15: 0000000000000001 [ 93.420876][ T5047] [ 93.424228][ T5047] Kernel Offset: disabled [ 93.428657][ T5047] Rebooting in 86400 seconds..