------------[ cut here ]------------
WARNING: CPU: 1 PID: 29583 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: 1 PID: 29583 Comm: syz-executor.1 Not tainted 4.14.192-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+0x1b2/0x283 lib/dump_stack.c:58
 panic+0x1f9/0x42d kernel/panic.c:183
 __warn.cold+0x20/0x4b kernel/panic.c:547
 report_bug+0x208/0x249 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:964
RIP: 0010:rds_message_alloc_sgs+0xe3/0x120 net/rds/message.c:227
RSP: 0018:ffff88803c3ef898 EFLAGS: 00010216
RAX: 0000000000040000 RBX: ffff88805e408000 RCX: ffffc9000e4e3000
RDX: 0000000000001e5b RSI: ffffffff85e96c73 RDI: ffff88805e408174
RBP: 0000000000000018 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffff8880a44c6240 R12: 0000000000000000
R13: ffff88805e408170 R14: 0000000000000018 R15: 0000000000000009
 rds_cmsg_rdma_args+0x533/0x10e0 net/rds/rdma.c:621
 rds_cmsg_send net/rds/send.c:943 [inline]
 rds_sendmsg+0xc60/0x1bf0 net/rds/send.c:1132
 sock_sendmsg_nosec net/socket.c:646 [inline]
 sock_sendmsg+0xb5/0x100 net/socket.c:656
 ___sys_sendmsg+0x6c8/0x800 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+0x46/0xbb
RIP: 0033:0x45ccd9
RSP: 002b:00007f85f237bc78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 000000000002c180 RCX: 000000000045ccd9
RDX: 0000000000000000 RSI: 0000000020001600 RDI: 0000000000000005
RBP: 000000000078bf40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000078bf0c
R13: 00007ffc2203209f R14: 00007f85f237c9c0 R15: 000000000078bf0c
Kernel Offset: disabled
Rebooting in 86400 seconds..