------------[ cut here ]------------
WARNING: CPU: 0 PID: 30124 at net/rds/message.c:227 rds_message_alloc_sgs+0xe3/0x120 net/rds/message.c:227
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 30124 Comm: syz-executor.3 Not tainted 4.14.176-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x13e/0x194 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x2f/0x30 kernel/panic.c:547
 report_bug+0x20a/0x248 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:177 [inline]
 fixup_bug arch/x86/kernel/traps.c:172 [inline]
 do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295
 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:963
RIP: 0010:rds_message_alloc_sgs+0xe3/0x120 net/rds/message.c:227
RSP: 0018:ffff88819e46f868 EFLAGS: 00010216
RAX: 0000000000040000 RBX: ffff888049de8dc0 RCX: ffffc90009c75000
RDX: 0000000000000613 RSI: ffffffff85d57ff3 RDI: ffff888049de8f34
RBP: 0000000000000017 R08: 0000000000000001 R09: 0000000000000000
R10: ffff8881cb890e00 R11: ffff8881cb890580 R12: 0000000000000000
R13: ffff888049de8f30 R14: 0000000000000017 R15: 0000000000000009
 rds_cmsg_rdma_args+0x465/0x1170 net/rds/rdma.c:621
 rds_cmsg_send net/rds/send.c:943 [inline]
 rds_sendmsg+0xcaa/0x1be0 net/rds/send.c:1132
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xc5/0x100 net/socket.c:656
 ___sys_sendmsg+0x70a/0x840 net/socket.c:2062
 __sys_sendmsg+0xa3/0x120 net/socket.c:2096
 SYSC_sendmsg net/socket.c:2107 [inline]
 SyS_sendmsg+0x27/0x40 net/socket.c:2103
 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x45c889
RSP: 002b:00007f1a4d770c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f1a4d7716d4 RCX: 000000000045c889
RDX: 0000000000000000 RSI: 0000000020001600 RDI: 0000000000000004
RBP: 000000000076bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000a01 R14: 00000000004ccbdc R15: 000000000076bf0c
Kernel Offset: disabled
Rebooting in 86400 seconds..