audit: type=1400 audit(1567527353.727:41): avc:  denied  { read } for  pid=6871 comm="syz-executor.0" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_generic_socket permissive=1
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: 7064 Comm: syz-executor.0 Not tainted 4.14.141 #37
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff888094490640 task.stack: ffff88808d9b8000
RIP: 0010:smc_diag_msg_common_fill net/smc/smc_diag.c:44 [inline]
RIP: 0010:__smc_diag_dump.isra.0+0x342/0x17b0 net/smc/smc_diag.c:82
RSP: 0018:ffff88808d9bf4f0 EFLAGS: 00010203
RAX: dffffc0000000000 RBX: ffff888089a92000 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000000e
RBP: ffff88808d9bf6c8 R08: 0000000000000040 R09: ffff888089a92050
R10: ffff888094490f38 R11: ffff888094490640 R12: ffff88808d9bf6a0
R13: ffff8880948a64d0 R14: ffff8880743f0c80 R15: ffff8880743f10d0
FS:  00007fcc232e4700(0000) GS:ffff8880aef00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000090b5b000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 smc_diag_dump+0x1e5/0x2a0 net/smc/smc_diag.c:170
 netlink_dump+0x3fa/0xb10 net/netlink/af_netlink.c:2202
 __netlink_dump_start+0x4ff/0x750 net/netlink/af_netlink.c:2299
 netlink_dump_start include/linux/netlink.h:217 [inline]
 smc_diag_handler_dump+0x1b7/0x200 net/smc/smc_diag.c:191
 __sock_diag_cmd net/core/sock_diag.c:231 [inline]
 sock_diag_rcv_msg+0x29e/0x3a0 net/core/sock_diag.c:263
 netlink_rcv_skb+0x14f/0x3c0 net/netlink/af_netlink.c:2432
 sock_diag_rcv+0x2b/0x40 net/core/sock_diag.c:274
 netlink_unicast_kernel net/netlink/af_netlink.c:1286 [inline]
 netlink_unicast+0x45d/0x640 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: 0033:0x459879
RSP: 002b:00007fcc232e3c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459879
RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000004
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcc232e46d4
R13: 00000000004c773e R14: 00000000004dcf58 R15: 00000000ffffffff
Code: 20 48 89 f9 48 c1 e9 03 80 3c 11 00 0f 85 b2 13 00 00 48 8b 50 20 48 b8 00 00 00 00 00 fc ff df 48 8d 7a 0e 48 89 f9 48 c1 e9 03 <0f> b6 0c 01 48 89 f8 83 e0 07 83 c0 01 38 c8 7c 08 84 c9 0f 85 
RIP: smc_diag_msg_common_fill net/smc/smc_diag.c:44 [inline] RSP: ffff88808d9bf4f0
RIP: __smc_diag_dump.isra.0+0x342/0x17b0 net/smc/smc_diag.c:82 RSP: ffff88808d9bf4f0
---[ end trace e00d34e93a4f2b2c ]---