IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready
device syz_tun entered promiscuous mode
device batadv_slave_0 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: 1 PID: 8209 Comm: syz-executor406 Not tainted 4.14.300-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
task: ffff8880afe58240 task.stack: ffff8880afc28000
RIP: 0010:hsr_check_carrier_and_operstate+0x3f/0x710 net/hsr/hsr_device.c:116
RSP: 0018:ffff8880afc2f0d0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880a1b585c0 RCX: 0000000000000001
RDX: 0000000000000002 RSI: 0000000000000004 RDI: ffff88809d672ca0
RBP: ffff888094b66cc0 R08: 0000000000000000 R09: 0000000000000001
R10: 0000000000000000 R11: ffff8880afe58240 R12: 0000000000000001
R13: ffff888094b66cc0 R14: 0000000000000000 R15: 0000000000000004
FS: 00007ff27a37d700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff27a37d718 CR3: 00000000abafe000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
hsr_netdev_notify+0x201/0x8b0 net/hsr/hsr_main.c:51
notifier_call_chain+0x108/0x1a0 kernel/notifier.c:93
call_netdevice_notifiers_info net/core/dev.c:1667 [inline]
netdev_state_change net/core/dev.c:1314 [inline]
netdev_state_change+0xca/0xf0 net/core/dev.c:1308
do_setlink+0x2508/0x2bf0 net/core/rtnetlink.c:2280
rtnl_group_changelink net/core/rtnetlink.c:2512 [inline]
rtnl_newlink+0xc9d/0x1830 net/core/rtnetlink.c:2668
rtnetlink_rcv_msg+0x3be/0xb10 net/core/rtnetlink.c:4322
netlink_rcv_skb+0x125/0x390 net/netlink/af_netlink.c:2454
netlink_unicast_kernel net/netlink/af_netlink.c:1296 [inline]
netlink_unicast+0x437/0x610 net/netlink/af_netlink.c:1322
netlink_sendmsg+0x648/0xbc0 net/netlink/af_netlink.c:1893
sock_sendmsg_nosec net/socket.c:646 [inline]
sock_sendmsg+0xb5/0x100 net/socket.c:656
___sys_sendmsg+0x6c8/0x800 net/socket.c:2062
__sys_sendmsg+0xa3/0x120 net/socket.c:2096
SYSC_sendmsg net/socket.c:2107 [inline]
SyS_sendmsg+0x27/0x40 net/socket.c:2103
do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
entry_SYSCALL_64_after_hwframe+0x5e/0xd3
Code: 59 fa be 04 00 00 00 48 89 ef e8 0d b0 ff ff 49 89 c6 48 83 c0 10 48 89 c2 48 89 04 24 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 67 06 00 00 48 b8 00 00 00 00 00 fc ff df 49
RIP: hsr_check_carrier_and_operstate+0x3f/0x710 net/hsr/hsr_device.c:116 RSP: ffff8880afc2f0d0
---[ end trace a73c399d470ba580 ]---
----------------
Code disassembly (best guess):
0: 59 pop %rcx
1: fa cli
2: be 04 00 00 00 mov $0x4,%esi
7: 48 89 ef mov %rbp,%rdi
a: e8 0d b0 ff ff callq 0xffffb01c
f: 49 89 c6 mov %rax,%r14
12: 48 83 c0 10 add $0x10,%rax
16: 48 89 c2 mov %rax,%rdx
19: 48 89 04 24 mov %rax,(%rsp)
1d: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
24: fc ff df
27: 48 c1 ea 03 shr $0x3,%rdx
* 2b: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2f: 0f 85 67 06 00 00 jne 0x69c
35: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
3c: fc ff df
3f: 49 rex.WB