device bridge5 left promiscuous mode device bridge15 entered promiscuous mode device bridge14 entered promiscuous mode kasan: CONFIG_KASAN_INLINE enabled kasan: GPF could be caused by NULL-ptr deref or user memory access general protection fault: 0000 [#1] PREEMPT SMP KASAN Modules linked in: CPU: 0 PID: 2604 Comm: syz-executor.1 Not tainted 4.14.165-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff888068ed24c0 task.stack: ffff88806dfd0000 RIP: 0010:hsr_check_carrier_and_operstate+0x3e/0x5e0 net/hsr/hsr_device.c:116 RSP: 0018:ffff88806dfd6e90 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: 0000000000000004 RCX: ffffc90009841000 RDX: 0000000000000002 RSI: ffffffff86617a4a RDI: ffff88808f1ff420 RBP: ffff88806dfd6ec8 R08: ffff888068ed24c0 R09: 0000000000000001 R10: 0000000000000000 R11: ffff888068ed24c0 R12: 0000000000000000 R13: ffff888087b28380 R14: 0000000000000010 R15: ffff8880a0754c40 FS: 00007f1170270700(0000) GS:ffff8880aec00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000071a6b4 CR3: 000000008ad5a000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: hsr_netdev_notify+0xef/0x8f0 net/hsr/hsr_main.c:51 notifier_call_chain+0x111/0x1b0 kernel/notifier.c:93 __raw_notifier_call_chain kernel/notifier.c:394 [inline] raw_notifier_call_chain+0x2e/0x40 kernel/notifier.c:401 call_netdevice_notifiers_info+0x56/0x70 net/core/dev.c:1671 netdev_state_change net/core/dev.c:1318 [inline] netdev_state_change+0xbf/0xe0 net/core/dev.c:1312 do_setlink+0x23da/0x2c20 net/core/rtnetlink.c:2280 rtnl_newlink+0x11a7/0x1700 net/core/rtnetlink.c:2651 rtnetlink_rcv_msg+0x3da/0xb70 net/core/rtnetlink.c:4306 netlink_rcv_skb+0x14f/0x3c0 net/netlink/af_netlink.c:2432 rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:4318 netlink_unicast_kernel net/netlink/af_netlink.c:1286 [inline] netlink_unicast+0x44d/0x650 net/netlink/af_netlink.c:1312 netlink_sendmsg+0x7c4/0xc60 net/netlink/af_netlink.c:1877 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xce/0x110 net/socket.c:656 ___sys_sendmsg+0x70a/0x840 net/socket.c:2062 __sys_sendmsg+0xb9/0x140 net/socket.c:2096 SYSC_sendmsg net/socket.c:2107 [inline] SyS_sendmsg+0x2d/0x50 net/socket.c:2103 do_syscall_64+0x1e8/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x45af49 RSP: 002b:00007f117026fc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045af49 RDX: 0000000000000000 RSI: 0000000020000180 RDI: 0000000000000007 RBP: 000000000075c118 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f11702706d4 R13: 00000000004cab9a R14: 00000000004e4320 R15: 00000000ffffffff Code: 10 e8 27 56 fb fa 4c 89 e7 be 04 00 00 00 e8 4a ac ff ff 4c 8d 70 10 49 89 c4 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 0d 05 00 00 48 b8 00 00 00 00 00 fc ff df 49 RIP: hsr_check_carrier_and_operstate+0x3e/0x5e0 net/hsr/hsr_device.c:116 RSP: ffff88806dfd6e90 ---[ end trace 176c66d9f57aba31 ]---