WARNING: CPU: 1 PID: 6904 at net/rds/message.c:316 rds_message_alloc_sgs+0x10c/0x160 net/rds/message.c:316 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 6904 Comm: syz-executor2 Not tainted 4.20.0-rc5+ #141 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x244/0x39d lib/dump_stack.c:113 panic+0x2ad/0x55c kernel/panic.c:188 kobject: 'kvm' (000000000802c9da): kobject_uevent_env kobject: 'kvm' (000000000802c9da): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (0000000035167682): kobject_uevent_env __warn.cold.8+0x20/0x45 kernel/panic.c:540 kobject: 'loop5' (0000000035167682): fill_kobj_path: path = '/devices/virtual/block/loop5' report_bug+0x254/0x2d0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:178 [inline] do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:271 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:290 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:969 RIP: 0010:rds_message_alloc_sgs+0x10c/0x160 net/rds/message.c:316 Code: c0 74 04 3c 03 7e 6c 44 01 ab 78 01 00 00 e8 8b 21 2a fa 4c 89 e0 48 83 c4 08 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 74 21 2a fa <0f> 0b 31 ff 44 89 ee e8 78 22 2a fa 45 85 ed 75 1b e8 5e 21 2a fa RSP: 0018:ffff8881d96ef460 EFLAGS: 00010216 RAX: 0000000000040000 RBX: ffff88817b5d0cc0 RCX: ffffc90009e8a000 RDX: 00000000000010b5 RSI: ffffffff87557a4c RDI: 0000000000000004 RBP: ffff8881d96ef490 R08: ffff8881ac048380 R09: ffffed103b5e5b5f R10: ffffed103b5e5b5f R11: ffff8881daf2dafb R12: 0000000000000000 R13: 0000000000000791 R14: 0000000000000791 R15: 0000000000000089 rds_cmsg_rdma_args+0x82d/0x1510 net/rds/rdma.c:623 rds_cmsg_send net/rds/send.c:971 [inline] rds_sendmsg+0x19a2/0x3180 net/rds/send.c:1273 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg+0xd5/0x120 net/socket.c:631 ___sys_sendmsg+0x7fd/0x930 net/socket.c:2116 __sys_sendmsg+0x11d/0x280 net/socket.c:2154 __do_sys_sendmsg net/socket.c:2163 [inline] __se_sys_sendmsg net/socket.c:2161 [inline] __x64_sys_sendmsg+0x78/0xb0 net/socket.c:2161 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x457569 Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f2c16f47c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000000000000 RSI: 0000000020001600 RDI: 0000000000000006 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2c16f486d4 R13: 00000000004c4037 R14: 00000000004d6880 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds..