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
CPU: 1 PID: 9607 Comm: syz-executor745 Not tainted 5.5.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:strlen+0x1f/0xa0 lib/string.c:527
Code: 00 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 e5 48 c1 ea 03 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 24
RSP: 0018:ffffc9000625ee90 EFLAGS: 00010286
RAX: dffffc0000000000 RBX: ffff8880a71dcc18 RCX: 1ffffffff1503ff6
RDX: 0000000000000022 RSI: ffffffff86732411 RDI: 0000000000000114
RBP: ffffc9000625eea8 R08: ffff888094420200 R09: ffffed1014e3b983
R10: ffffed1014e3b982 R11: ffff8880a71dcc17 R12: 0000000000000114
R13: 0000000000000104 R14: ffff8880a6f6c200 R15: ffff8880a71dcc00
FS:  0000000001a09880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000046 CR3: 00000000a79d8000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 strlen include/linux/string.h:302 [inline]
 ip_set_comment_free+0x69/0xe0 net/netfilter/ipset/ip_set_core.c:402
 ip_set_ext_destroy include/linux/netfilter/ipset/ip_set.h:275 [inline]
 ip_set_ext_destroy include/linux/netfilter/ipset/ip_set.h:267 [inline]
 hash_net4_add+0x1b9a/0x2200 net/netfilter/ipset/ip_set_hash_gen.h:766
 hash_net4_uadt+0x596/0x940 net/netfilter/ipset/ip_set_hash_net.c:195
 call_ad+0x1a0/0x5a0 net/netfilter/ipset/ip_set_core.c:1716
 ip_set_ad.isra.0+0x572/0xb20 net/netfilter/ipset/ip_set_core.c:1804
 ip_set_uadd+0x37/0x50 net/netfilter/ipset/ip_set_core.c:1829
 nfnetlink_rcv_msg+0xcf2/0xfb0 net/netfilter/nfnetlink.c:229
 netlink_rcv_skb+0x177/0x450 net/netlink/af_netlink.c:2477
 nfnetlink_rcv+0x1ba/0x460 net/netfilter/nfnetlink.c:563
 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: 0033:0x4406b9
Code: 23 02 00 85 c0 b8 00 00 00 00 48 0f 44 c3 5b c3 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 9b 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc205a1318 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000009 RCX: 00000000004406b9
RDX: 0000000000000000 RSI: 0000000020000d00 RDI: 0000000000000004
RBP: 00000000006cb018 R08: 0000000000000008 R09: 6c616b7a79732f2e
R10: 000000000000000c R11: 0000000000000246 R12: 0000000000401ee0
R13: 0000000000401f70 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace 17d4e836a42ad83a ]---
RIP: 0010:strlen+0x1f/0xa0 lib/string.c:527
Code: 00 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 e5 48 c1 ea 03 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 24
RSP: 0018:ffffc9000625ee90 EFLAGS: 00010286
RAX: dffffc0000000000 RBX: ffff8880a71dcc18 RCX: 1ffffffff1503ff6
RDX: 0000000000000022 RSI: ffffffff86732411 RDI: 0000000000000114
RBP: ffffc9000625eea8 R08: ffff888094420200 R09: ffffed1014e3b983
R10: ffffed1014e3b982 R11: ffff8880a71dcc17 R12: 0000000000000114
R13: 0000000000000104 R14: ffff8880a6f6c200 R15: ffff8880a71dcc00
FS:  0000000001a09880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000046 CR3: 00000000a79d8000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400