SELinux: unrecognized netlink message: protocol=4 nlmsg_type=0 sclass=netlink_tcpdiag_socket pig=8768 comm=syz-executor.2 SELinux: unrecognized netlink message: protocol=4 nlmsg_type=0 sclass=netlink_tcpdiag_socket pig=8772 comm=syz-executor.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: 0 PID: 8933 Comm: syz-executor.3 Not tainted 4.14.173-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff8880a052a0c0 task.stack: ffff888079f80000 RIP: 0010:smc_diag_msg_common_fill net/smc/smc_diag.c:46 [inline] RIP: 0010:__smc_diag_dump.isra.4+0x322/0x1670 net/smc/smc_diag.c:81 RSP: 0018:ffff888079f87328 EFLAGS: 00010203 RAX: dffffc0000000000 RBX: ffff888079f87500 RCX: 0000000000000000 RDX: 0000000000000001 RSI: ffff8880a1840a7c RDI: 000000000000000e RBP: ffff888079f87528 R08: ffffed1014308152 R09: ffff8880a1840a50 R10: ffffed1014308151 R11: ffff8880a1840a8f R12: ffff888094e7c200 R13: ffff8880a1840a40 R14: ffff888095e1a5d0 R15: 0000000000000000 FS: 00007f6dac1da700(0000) GS:ffff8880aee00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020400000 CR3: 00000000a8ff6000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: smc_diag_dump+0x1dc/0x2a0 net/smc/smc_diag.c:169 netlink_dump+0x3bf/0xb70 net/netlink/af_netlink.c:2203 __netlink_dump_start+0x4c2/0x780 net/netlink/af_netlink.c:2300 netlink_dump_start include/linux/netlink.h:217 [inline] smc_diag_handler_dump+0x197/0x220 net/smc/smc_diag.c:190 __sock_diag_cmd net/core/sock_diag.c:231 [inline] sock_diag_rcv_msg+0x252/0x350 net/core/sock_diag.c:263 netlink_rcv_skb+0x133/0x370 net/netlink/af_netlink.c:2433 sock_diag_rcv+0x25/0x40 net/core/sock_diag.c:274 netlink_unicast_kernel net/netlink/af_netlink.c:1287 [inline] netlink_unicast+0x40d/0x5f0 net/netlink/af_netlink.c:1313 netlink_sendmsg+0x730/0xbd0 net/netlink/af_netlink.c:1878 sock_sendmsg_nosec net/socket.c:646 [inline] sock_sendmsg+0xb5/0xf0 net/socket.c:656 kernel_sendmsg+0x26/0x30 net/socket.c:664 sock_no_sendpage+0xf7/0x130 net/core/sock.c:2569 kernel_sendpage+0x60/0xd0 net/socket.c:3407 sock_sendpage+0x6d/0xd0 net/socket.c:871 pipe_to_sendpage+0x206/0x420 fs/splice.c:451 splice_from_pipe_feed fs/splice.c:502 [inline] __splice_from_pipe+0x2cb/0x720 fs/splice.c:626 splice_from_pipe+0xb5/0x110 fs/splice.c:661 generic_splice_sendpage+0x10/0x20 fs/splice.c:832 do_splice_from fs/splice.c:851 [inline] do_splice fs/splice.c:1147 [inline] SYSC_splice fs/splice.c:1402 [inline] SyS_splice+0x6e9/0x1580 fs/splice.c:1382 do_syscall_64+0x1c7/0x5b0 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x459879 RSP: 002b:00007f6dac1d9c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 0000000000459879 RDX: 0000000000000006 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 000000000075c070 R08: 0000000080000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f6dac1da6d4 R13: 00000000004c907b R14: 00000000004df4f0 R15: 00000000ffffffff Code: df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 2c 12 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 7f 20 49 8d 7f 0e 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 01 38 d0 7c 08 84 d2 0f 85 RIP: smc_diag_msg_common_fill net/smc/smc_diag.c:46 [inline] RSP: ffff888079f87328 RIP: __smc_diag_dump.isra.4+0x322/0x1670 net/smc/smc_diag.c:81 RSP: ffff888079f87328 ---[ end trace e2cd7e646d4c5302 ]---