kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
CPU: 1 PID: 7618 Comm: syz-executor4 Not tainted 4.19.0-rc2+ #124
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rhashtable_walk_start_check+0xd3/0x1400 lib/rhashtable.c:717
Code: f2 c7 40 30 f2 f2 f2 f2 c7 40 34 00 f2 f2 f2 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 d4 92 0b fe 4c 89 e8 48 c1 e8 03 <80> 3c 18 00 0f 85 a4 0f 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b
RSP: 0018:ffff88019407ee98 EFLAGS: 00010246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffc90005690000
RDX: 0000000000000552 RSI: ffffffff83713c4c RDI: 0000000000000000
RBP: ffff88019407f0e0 R08: ffff8801948c6280 R09: ffffed0032647764
R10: ffffed0032647764 R11: ffff88019323bb23 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88019407f220 R15: fffffffffffff000
FS:  0000000000000000(0000) GS:ffff8801db100000(0063) knlGS:00000000f5efbb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000200002c0 CR3: 00000001cd18c000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 rhashtable_walk_start include/linux/rhashtable.h:244 [inline]
 tipc_nl_sk_walk+0x52/0x1d0 net/tipc/socket.c:3236
 tipc_nl_sk_dump+0x24/0x30 net/tipc/socket.c:3366
 __tipc_nl_compat_dumpit.isra.11+0x20b/0xad0 net/tipc/netlink_compat.c:192
 tipc_nl_compat_dumpit+0x1f4/0x440 net/tipc/netlink_compat.c:265
 tipc_nl_compat_handle net/tipc/netlink_compat.c:1142 [inline]
 tipc_nl_compat_recv+0x12b3/0x19a0 net/tipc/netlink_compat.c:1205
 genl_family_rcv_msg+0x8a3/0x1140 net/netlink/genetlink.c:601
 genl_rcv_msg+0xc6/0x168 net/netlink/genetlink.c:626
 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2454
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:637
 netlink_unicast_kernel net/netlink/af_netlink.c:1317 [inline]
 netlink_unicast+0x5a0/0x760 net/netlink/af_netlink.c:1343
 netlink_sendmsg+0xa18/0xfc0 net/netlink/af_netlink.c:1908
 sock_sendmsg_nosec net/socket.c:621 [inline]
 sock_sendmsg+0xd5/0x120 net/socket.c:631
 ___sys_sendmsg+0x7fd/0x930 net/socket.c:2114
 __sys_sendmsg+0x11d/0x290 net/socket.c:2152
 __compat_sys_sendmsg net/compat.c:754 [inline]
 __do_compat_sys_sendmsg net/compat.c:761 [inline]
 __se_compat_sys_sendmsg net/compat.c:758 [inline]
 __ia32_compat_sys_sendmsg+0x7a/0xb0 net/compat.c:758
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7effca9
Code: 55 08 8b 88 64 cd ff ff 8b 98 68 cd ff ff 89 c8 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 1c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f5efb0cc EFLAGS: 00000296 ORIG_RAX: 0000000000000172
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020000100
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
---[ end trace 599d4a0d1ba2d4d8 ]---
RIP: 0010:rhashtable_walk_start_check+0xd3/0x1400 lib/rhashtable.c:717
Code: f2 c7 40 30 f2 f2 f2 f2 c7 40 34 00 f2 f2 f2 65 48 8b 04 25 28 00 00 00 48 89 45 d0 31 c0 e8 d4 92 0b fe 4c 89 e8 48 c1 e8 03 <80> 3c 18 00 0f 85 a4 0f 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b
RSP: 0018:ffff88019407ee98 EFLAGS: 00010246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: ffffc90005690000
RDX: 0000000000000552 RSI: ffffffff83713c4c RDI: 0000000000000000
RBP: ffff88019407f0e0 R08: ffff8801948c6280 R09: ffffed0032647764
R10: ffffed0032647764 R11: ffff88019323bb23 R12: 0000000000000000
R13: 0000000000000000 R14: ffff88019407f220 R15: fffffffffffff000
FS:  0000000000000000(0000) GS:ffff8801db100000(0063) knlGS:00000000f5efbb40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000200002c0 CR3: 00000001cd18c000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400