./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor249721600 <...> Warning: Permanently added '10.128.0.243' (ECDSA) to the list of known hosts. execve("./syz-executor249721600", ["./syz-executor249721600"], 0x7ffe2a03cef0 /* 10 vars */) = 0 brk(NULL) = 0x555555890000 brk(0x555555890c40) = 0x555555890c40 arch_prctl(ARCH_SET_FS, 0x555555890300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor249721600", 4096) = 27 brk(0x5555558b1c40) = 0x5555558b1c40 brk(0x5555558b2000) = 0x5555558b2000 mprotect(0x7f7e42d91000, 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_INET, SOCK_DGRAM, IPPROTO_UDPLITE) = 3 ioctl(3, SIOCSARP, 0x20000040) = 0 socket(AF_INET, SOCK_DGRAM, IPPROTO_UDPLITE) = 4 syzkaller login: [ 50.726219][ T3607] ------------[ cut here ]------------ [ 50.731796][ T3607] memcpy: detected field-spanning write (size 16) of single field "r->arp_ha.sa_data" at net/ipv4/arp.c:1128 (size 14) [ 50.744721][ T3607] WARNING: CPU: 0 PID: 3607 at net/ipv4/arp.c:1128 arp_ioctl+0x7eb/0x840 [ 50.753174][ T3607] Modules linked in: [ 50.757090][ T3607] CPU: 0 PID: 3607 Comm: syz-executor249 Not tainted 6.0.0-syzkaller-02734-g0326074ff465 #0 [ 50.767178][ T3607] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 50.777257][ T3607] RIP: 0010:arp_ioctl+0x7eb/0x840 [ 50.782295][ T3607] Code: fc ff ff e8 27 71 8e f9 b9 0e 00 00 00 4c 89 e6 48 c7 c2 40 51 02 8b 48 c7 c7 20 50 02 8b c6 05 a8 6f de 05 01 e8 e1 59 51 01 <0f> 0b e9 66 fc ff ff e8 f9 70 8e f9 41 be fa ff ff ff e8 fe 5c 6f [ 50.801944][ T3607] RSP: 0018:ffffc90003f9fa70 EFLAGS: 00010286 [ 50.808075][ T3607] RAX: 0000000000000000 RBX: ffff8880227e0828 RCX: 0000000000000000 [ 50.816062][ T3607] RDX: ffff88801c2c8000 RSI: ffffffff8160f6f8 RDI: fffff520007f3f40 [ 50.824085][ T3607] RBP: 1ffff920007f3f54 R08: 0000000000000005 R09: 0000000000000000 [ 50.832080][ T3607] R10: 0000000080000201 R11: 0000000000000000 R12: 0000000000000010 [ 50.840074][ T3607] R13: ffff8880227e0800 R14: 0000000000000000 R15: ffff8880227e0924 [ 50.848069][ T3607] FS: 0000555555890300(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 [ 50.857023][ T3607] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 50.863616][ T3607] CR2: 0000000000458e30 CR3: 000000001d33f000 CR4: 00000000003506f0 [ 50.871617][ T3607] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 50.879633][ T3607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 50.887639][ T3607] Call Trace: [ 50.890919][ T3607] [ 50.893840][ T3607] ? arp_req_delete+0x520/0x520 [ 50.898716][ T3607] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 50.904557][ T3607] ? find_held_lock+0x2d/0x110 [ 50.909366][ T3607] inet_ioctl+0x27f/0x320 [ 50.913713][ T3607] ? ipip_gro_complete+0x100/0x100 [ 50.918850][ T3607] ? lock_downgrade+0x6e0/0x6e0 [ 50.923709][ T3607] ? tomoyo_path_number_perm+0x441/0x590 [ 50.929389][ T3607] ? kfree+0xe2/0x580 [ 50.933402][ T3607] ? tomoyo_path_number_perm+0x24e/0x590 [ 50.939106][ T3607] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 50.944951][ T3607] sock_do_ioctl+0xcc/0x230 [ 50.949503][ T3607] ? get_user_ifreq+0x250/0x250 [ 50.954367][ T3607] ? vfs_fileattr_set+0xbe0/0xbe0 [ 50.959443][ T3607] sock_ioctl+0x2f1/0x640 [ 50.963784][ T3607] ? br_ioctl_call+0xa0/0xa0 [ 50.968402][ T3607] ? lock_downgrade+0x6e0/0x6e0 [ 50.973264][ T3607] ? _raw_spin_unlock_irq+0x1f/0x40 [ 50.978494][ T3607] ? bpf_lsm_file_ioctl+0x5/0x10 [ 50.983444][ T3607] ? br_ioctl_call+0xa0/0xa0 [ 50.988060][ T3607] __x64_sys_ioctl+0x193/0x200 [ 50.992838][ T3607] do_syscall_64+0x35/0xb0 [ 50.997287][ T3607] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 51.003202][ T3607] RIP: 0033:0x7f7e42d24c49 [ 51.007643][ T3607] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 51.027275][ T3607] RSP: 002b:00007fffb08fe758 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 51.035676][ T3607] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7e42d24c49 [ 51.043671][ T3607] RDX: 0000000020000040 RSI: 0000000000008954 RDI: 0000000000000004 [ 51.051685][ T3607] RBP: 00007f7e42ce8df0 R08: 0000000000000000 R09: 0000000000000000 [ 51.059697][ T3607] R10: 00000000000000ff R11: 0000000000000246 R12: 00007f7e42ce8e80 [ 51.067715][ T3607] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 51.075703][ T3607] [ 51.078749][ T3607] Kernel panic - not syncing: panic_on_warn set ... [ 51.085330][ T3607] CPU: 0 PID: 3607 Comm: syz-executor249 Not tainted 6.0.0-syzkaller-02734-g0326074ff465 #0 [ 51.095379][ T3607] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 51.105417][ T3607] Call Trace: [ 51.108682][ T3607] [ 51.111603][ T3607] dump_stack_lvl+0xcd/0x134 [ 51.116188][ T3607] panic+0x2c8/0x627 [ 51.120073][ T3607] ? panic_print_sys_info.part.0+0x10b/0x10b [ 51.126049][ T3607] ? __warn.cold+0x248/0x2c4 [ 51.130628][ T3607] ? arp_ioctl+0x7eb/0x840 [ 51.135037][ T3607] __warn.cold+0x259/0x2c4 [ 51.139442][ T3607] ? __wake_up_klogd.part.0+0x99/0xf0 [ 51.144800][ T3607] ? arp_ioctl+0x7eb/0x840 [ 51.149206][ T3607] report_bug+0x1bc/0x210 [ 51.153529][ T3607] handle_bug+0x3c/0x70 [ 51.157671][ T3607] exc_invalid_op+0x14/0x40 [ 51.162161][ T3607] asm_exc_invalid_op+0x16/0x20 [ 51.167004][ T3607] RIP: 0010:arp_ioctl+0x7eb/0x840 [ 51.172016][ T3607] Code: fc ff ff e8 27 71 8e f9 b9 0e 00 00 00 4c 89 e6 48 c7 c2 40 51 02 8b 48 c7 c7 20 50 02 8b c6 05 a8 6f de 05 01 e8 e1 59 51 01 <0f> 0b e9 66 fc ff ff e8 f9 70 8e f9 41 be fa ff ff ff e8 fe 5c 6f [ 51.191615][ T3607] RSP: 0018:ffffc90003f9fa70 EFLAGS: 00010286 [ 51.197694][ T3607] RAX: 0000000000000000 RBX: ffff8880227e0828 RCX: 0000000000000000 [ 51.205666][ T3607] RDX: ffff88801c2c8000 RSI: ffffffff8160f6f8 RDI: fffff520007f3f40 [ 51.213638][ T3607] RBP: 1ffff920007f3f54 R08: 0000000000000005 R09: 0000000000000000 [ 51.221611][ T3607] R10: 0000000080000201 R11: 0000000000000000 R12: 0000000000000010 [ 51.229587][ T3607] R13: ffff8880227e0800 R14: 0000000000000000 R15: ffff8880227e0924 [ 51.237573][ T3607] ? vprintk+0x88/0x90 [ 51.241660][ T3607] ? arp_req_delete+0x520/0x520 [ 51.246520][ T3607] ? _raw_spin_unlock_irqrestore+0x50/0x70 [ 51.252360][ T3607] ? find_held_lock+0x2d/0x110 [ 51.257146][ T3607] inet_ioctl+0x27f/0x320 [ 51.261488][ T3607] ? ipip_gro_complete+0x100/0x100 [ 51.266612][ T3607] ? lock_downgrade+0x6e0/0x6e0 [ 51.271468][ T3607] ? tomoyo_path_number_perm+0x441/0x590 [ 51.277112][ T3607] ? kfree+0xe2/0x580 [ 51.281112][ T3607] ? tomoyo_path_number_perm+0x24e/0x590 [ 51.286757][ T3607] ? tomoyo_execute_permission+0x4a0/0x4a0 [ 51.292586][ T3607] sock_do_ioctl+0xcc/0x230 [ 51.297099][ T3607] ? get_user_ifreq+0x250/0x250 [ 51.301956][ T3607] ? vfs_fileattr_set+0xbe0/0xbe0 [ 51.307016][ T3607] sock_ioctl+0x2f1/0x640 [ 51.311353][ T3607] ? br_ioctl_call+0xa0/0xa0 [ 51.315949][ T3607] ? lock_downgrade+0x6e0/0x6e0 [ 51.320810][ T3607] ? _raw_spin_unlock_irq+0x1f/0x40 [ 51.326026][ T3607] ? bpf_lsm_file_ioctl+0x5/0x10 [ 51.330973][ T3607] ? br_ioctl_call+0xa0/0xa0 [ 51.335577][ T3607] __x64_sys_ioctl+0x193/0x200 [ 51.340352][ T3607] do_syscall_64+0x35/0xb0 [ 51.344787][ T3607] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 51.350694][ T3607] RIP: 0033:0x7f7e42d24c49 [ 51.355113][ T3607] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 51.374724][ T3607] RSP: 002b:00007fffb08fe758 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 51.383142][ T3607] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f7e42d24c49 [ 51.391146][ T3607] RDX: 0000000020000040 RSI: 0000000000008954 RDI: 0000000000000004 [ 51.399133][ T3607] RBP: 00007f7e42ce8df0 R08: 0000000000000000 R09: 0000000000000000 [ 51.407115][ T3607] R10: 00000000000000ff R11: 0000000000000246 R12: 00007f7e42ce8e80 [ 51.415109][ T3607] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 51.423368][ T3607] [ 51.426642][ T3607] Kernel Offset: disabled [ 51.431036][ T3607] Rebooting in 86400 seconds..