should_fail_alloc_page mm/page_alloc.c:3082 [inline]
 prepare_alloc_pages mm/page_alloc.c:4322 [inline]
 __alloc_pages_nodemask+0x34e/0xd70 mm/page_alloc.c:4358
BUG: unable to handle kernel paging request
 alloc_pages_current+0x10c/0x210 mm/mempolicy.c:2093
 alloc_pages include/linux/gfp.h:492 [inline]
 __get_free_pages+0xf/0x40 mm/page_alloc.c:4412
 at fffffc0000000000
 get_zeroed_page+0x11/0x20 mm/page_alloc.c:4421
PGD 0 
 rds_cong_from_addr+0x16d/0x520 net/rds/cong.c:152
P4D 0 
Oops: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
 rds_cong_get_maps+0x46/0x140 net/rds/cong.c:205
Modules linked in:
 __rds_conn_create+0x5c7/0x1ce0 net/rds/connection.c:189
CPU: 0 PID: 10021 Comm: syz-executor4 Not tainted 4.17.0-rc3+ #28
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:bytes_is_nonzero mm/kasan/kasan.c:166 [inline]
RIP: 0010:memory_is_nonzero mm/kasan/kasan.c:184 [inline]
RIP: 0010:memory_is_poisoned_n mm/kasan/kasan.c:210 [inline]
RIP: 0010:memory_is_poisoned mm/kasan/kasan.c:241 [inline]
RIP: 0010:check_memory_region_inline mm/kasan/kasan.c:257 [inline]
RIP: 0010:check_memory_region+0x126/0x1b0 mm/kasan/kasan.c:267
RSP: 0018:ffff880191ea72d0 EFLAGS: 00010212
RAX: fffffc0000000000 RBX: fffffc0000000000 RCX: ffffffff873f6fea
RDX: 0000000000000001 RSI: 0000000000000040 RDI: ffffffffffffffd8
RBP: ffff880191ea72e8 R08: dffffc0000000003 R09: fffffbfffffffffb
R10: dffffc0000000002 R11: 0000000000000017 R12: dffffc0000000003
R13: 0000000000000000 R14: ffffffffffffffd8 R15: 0000000000000000
FS:  00007f04064c0700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: fffffc0000000000 CR3: 00000001cae1b000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 memset+0x23/0x40 mm/kasan/kasan.c:285
 memset include/linux/string.h:330 [inline]
 smc_ib_remember_port_attr+0x8a/0x370 net/smc/smc_ib.c:421
 rds_conn_create_outgoing+0x3b/0x50 net/rds/connection.c:309
 rds_sendmsg+0xd29/0x2a30 net/rds/send.c:1161
 smc_pnet_add+0xb9b/0xec0 net/smc/smc_pnet.c:354
 genl_family_rcv_msg+0x889/0x1120 net/netlink/genetlink.c:599
 sock_sendmsg_nosec net/socket.c:629 [inline]
 sock_sendmsg+0xd5/0x120 net/socket.c:639
 __sys_sendto+0x3d7/0x670 net/socket.c:1789
 genl_rcv_msg+0xc6/0x170 net/netlink/genetlink.c:624
 netlink_rcv_skb+0x172/0x440 net/netlink/af_netlink.c:2448
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:635
 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline]
 netlink_unicast+0x58b/0x740 net/netlink/af_netlink.c:1336
 __do_sys_sendto net/socket.c:1801 [inline]
 __se_sys_sendto net/socket.c:1797 [inline]
 __x64_sys_sendto+0xe1/0x1a0 net/socket.c:1797
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 netlink_sendmsg+0x9f0/0xfa0 net/netlink/af_netlink.c:1901
 sock_sendmsg_nosec net/socket.c:629 [inline]
 sock_sendmsg+0xd5/0x120 net/socket.c:639
 ___sys_sendmsg+0x805/0x940 net/socket.c:2117
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455979
RSP: 002b:00007faee12b6c68 EFLAGS: 00000246
 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00007faee12b76d4 RCX: 0000000000455979
RDX: 0000000000000000 RSI: 00000000209ef000 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 000000002069affb R09: 0000000000000010
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000014
R13: 0000000000000545 R14: 00000000006fbf18 R15: 0000000000000004
 __sys_sendmsg+0x115/0x270 net/socket.c:2155
 __do_sys_sendmsg net/socket.c:2164 [inline]
 __se_sys_sendmsg net/socket.c:2162 [inline]
 __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2162
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455979
RSP: 002b:00007f04064bfc68 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f04064c06d4 RCX: 0000000000455979
RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000013
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 000000000000053d R14: 00000000006fbe58 R15: 0000000000000000
Code: ff ff ff 4d 85 c0 74 ba 48 b8 01 00 00 00 00 fc ff df 4d 01 c8 48 01 d8 41 80 39 00 74 08 e9 8c 00 00 00 48 89 d8 4c 39 c0 74 97 <80> 38 00 48 8d 58 01 74 ef eb 87 4c 89 c0 49 39 c2 74 59 e8 22 
RIP: bytes_is_nonzero mm/kasan/kasan.c:166 [inline] RSP: ffff880191ea72d0
RIP: memory_is_nonzero mm/kasan/kasan.c:184 [inline] RSP: ffff880191ea72d0
RIP: memory_is_poisoned_n mm/kasan/kasan.c:210 [inline] RSP: ffff880191ea72d0
RIP: memory_is_poisoned mm/kasan/kasan.c:241 [inline] RSP: ffff880191ea72d0
RIP: check_memory_region_inline mm/kasan/kasan.c:257 [inline] RSP: ffff880191ea72d0
RIP: check_memory_region+0x126/0x1b0 mm/kasan/kasan.c:267 RSP: ffff880191ea72d0
CR2: fffffc0000000000
---[ end trace 2e997057b04a6cfa ]---