netlink: 'syz-executor2': attribute type 39 has an invalid length. audit: type=1804 audit(1547722941.120:294): pid=26567 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor5" name="/root/syzkaller-testdir154224872/syzkaller.7t764W/1114/memory.events" dev="sda1" ino=16565 res=1 netlink: 'syz-executor2': attribute type 39 has an invalid length. ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(class_idx > MAX_LOCKDEP_KEYS) WARNING: CPU: 1 PID: 26518 at kernel/locking/lockdep.c:3315 __lock_acquire+0x14cd/0x4a30 kernel/locking/lockdep.c:3315 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 26518 Comm: syz-executor3 Not tainted 5.0.0-rc2+ #7 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1db/0x2d0 lib/dump_stack.c:113 panic+0x2cb/0x65c kernel/panic.c:214 __warn.cold+0x20/0x48 kernel/panic.c:571 report_bug+0x263/0x2b0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] fixup_bug arch/x86/kernel/traps.c:173 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271 do_invalid_op+0x37/0x50 arch/x86/kernel/traps.c:290 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:973 RIP: 0010:__lock_acquire+0x14cd/0x4a30 kernel/locking/lockdep.c:3315 Code: 8b 1d 0b ea f7 08 45 85 db 0f 85 f0 f3 ff ff 48 c7 c6 60 a2 4b 88 48 c7 c7 80 77 4b 88 44 89 9c 24 98 00 00 00 e8 63 58 e7 ff <0f> 0b 44 8b 9c 24 98 00 00 00 e9 c9 f3 ff ff 8b 0d be 94 f2 09 85 RSP: 0018:ffff888052edee90 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 00000000005d9161 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff81685456 RDI: 0000000000000006 RBP: ffff888052edf118 R08: ffff8880699b24c0 R09: fffffbfff13332f1 R10: fffffbfff13332f0 R11: ffffffff89999783 R12: ffff8880699b24c0 R13: ffff8880699b2d8a R14: 0000000000000001 R15: 00000000005d9161 lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] __queue_work+0x2d9/0x1450 kernel/workqueue.c:1417 __queue_delayed_work+0x2a9/0x390 kernel/workqueue.c:1522 mod_delayed_work_on+0xe3/0x270 kernel/workqueue.c:1596 mod_delayed_work include/linux/workqueue.h:542 [inline] addrconf_mod_dad_work+0x3f/0xa0 net/ipv6/addrconf.c:328 addrconf_dad_start+0x76/0xb0 net/ipv6/addrconf.c:3976 inet6_addr_add+0x4e4/0x970 net/ipv6/addrconf.c:2930 inet6_rtm_newaddr+0x1145/0x1b80 net/ipv6/addrconf.c:4757 rtnetlink_rcv_msg+0x481/0xc30 net/core/rtnetlink.c:5130 netlink_rcv_skb+0x17d/0x410 net/netlink/af_netlink.c:2477 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5148 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0x574/0x770 net/netlink/af_netlink.c:1336 netlink_sendmsg+0xa05/0xf90 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xdd/0x130 net/socket.c:631 __sys_sendto+0x387/0x5f0 net/socket.c:1788 __do_sys_sendto net/socket.c:1800 [inline] __se_sys_sendto net/socket.c:1796 [inline] __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1796 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x411fc3 Code: ff 0f 83 40 18 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d cd 42 64 00 00 75 17 49 89 ca b8 2c 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 11 18 00 00 c3 48 83 ec 08 e8 87 fa ff ff RSP: 002b:00007ffd8133c608 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000411fc3 RDX: 0000000000000040 RSI: 0000000000a50070 RDI: 0000000000000003 RBP: 00007ffd8133c670 R08: 00007ffd8133c610 R09: 000000000000000c R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003 R13: 0000000000413cf0 R14: 0000000000000000 R15: 0000000000000000 Kernel Offset: disabled Rebooting in 86400 seconds..