netlink: 'syz-executor.0': attribute type 1 has an invalid length. netlink: 'syz-executor.0': attribute type 6 has an invalid length. ------------[ cut here ]------------ lockdep bfs error:-1 WARNING: CPU: 3 PID: 26538 at kernel/locking/lockdep.c:1696 print_bfs_bug+0x5c/0x80 kernel/locking/lockdep.c:1696 Kernel panic - not syncing: panic_on_warn set ... CPU: 3 PID: 26538 Comm: syz-executor.0 Not tainted 5.5.0-rc6-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:221 __warn.cold+0x2f/0x3e kernel/panic.c:582 report_bug+0x289/0x300 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:174 [inline] fixup_bug arch/x86/kernel/traps.c:169 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:print_bfs_bug+0x5c/0x80 kernel/locking/lockdep.c:1696 Code: 08 00 74 2d 48 c7 c7 40 d2 61 8b e8 d2 5e 01 00 66 90 85 db 75 05 5b 41 5c 5d c3 44 89 e6 48 c7 c7 e0 80 2b 88 e8 83 a1 eb ff <0f> 0b 5b 41 5c 5d c3 0f 0b 48 c7 c7 50 36 93 89 e8 3f b1 58 00 eb RSP: 0018:ffffc9002810f138 EFLAGS: 00010086 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: 0000000000006e8b RSI: ffffffff815e5396 RDI: fffff52005021e19 RBP: ffffc9002810f148 R08: ffff8880456d8240 R09: ffffed1005a645c9 R10: ffffed1005a645c8 R11: ffff88802d322e43 R12: 00000000ffffffff R13: ffff8880456d8ad8 R14: ffffc9002810f1c0 R15: 0000000000000198 check_path+0x36/0x40 kernel/locking/lockdep.c:1772 check_noncircular+0x16d/0x3e0 kernel/locking/lockdep.c:1797 check_prev_add kernel/locking/lockdep.c:2476 [inline] check_prevs_add kernel/locking/lockdep.c:2581 [inline] validate_chain kernel/locking/lockdep.c:2971 [inline] __lock_acquire+0x2596/0x4a00 kernel/locking/lockdep.c:3955 lock_acquire+0x190/0x410 kernel/locking/lockdep.c:4485 __mutex_lock_common kernel/locking/mutex.c:956 [inline] __mutex_lock+0x156/0x13c0 kernel/locking/mutex.c:1103 mutex_lock_nested+0x16/0x20 kernel/locking/mutex.c:1118 rtnl_lock+0x17/0x20 net/core/rtnetlink.c:72 nl80211_pre_doit+0x3fb/0x650 net/wireless/nl80211.c:13823 genl_family_rcv_msg_doit net/netlink/genetlink.c:667 [inline] genl_family_rcv_msg net/netlink/genetlink.c:717 [inline] genl_rcv_msg+0x63e/0xea0 net/netlink/genetlink.c:734 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477 genl_rcv+0x29/0x40 net/netlink/genetlink.c:745 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0x58c/0x7d0 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x91c/0xea0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg+0xd7/0x130 net/socket.c:659 ____sys_sendmsg+0x753/0x880 net/socket.c:2330 ___sys_sendmsg+0x100/0x170 net/socket.c:2384 __sys_sendmsg+0x105/0x1d0 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg net/socket.c:2424 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2424 do_syscall_64+0xfa/0x790 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45afd9 Code: bd b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 8b b1 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f92e7080c88 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000072bf00 RCX: 000000000045afd9 RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000003 RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f92e70816d4 R13: 00000000004b1ac8 R14: 00000000006f83d8 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds..