================================================================================ UBSAN: object-size-mismatch in ./include/linux/skbuff.h:2021:28 member access within address 000000002c1825a5 with insufficient space for an object of type 'struct sk_buff' CPU: 1 PID: 9846 Comm: syz-executor.1 Not tainted 5.10.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x137/0x1be lib/dump_stack.c:120 ubsan_epilogue lib/ubsan.c:148 [inline] handle_object_size_mismatch lib/ubsan.c:297 [inline] ubsan_type_mismatch_common+0x1e2/0x390 lib/ubsan.c:310 __ubsan_handle_type_mismatch_v1+0x41/0x50 lib/ubsan.c:339 __skb_queue_before include/linux/skbuff.h:2021 [inline] __skb_queue_tail include/linux/skbuff.h:2054 [inline] tipc_sk_filter_rcv+0x2bf/0x2330 net/tipc/socket.c:2342 tipc_sk_enqueue net/tipc/socket.c:2438 [inline] tipc_sk_rcv+0x3d9/0xf80 net/tipc/socket.c:2490 tipc_node_xmit+0x285/0xb10 net/tipc/node.c:1689 __tipc_sendmsg+0x1cbe/0x2f90 net/tipc/socket.c:1524 tipc_sendmsg+0x51/0x70 net/tipc/socket.c:1409 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xc1/0xf0 net/socket.c:672 ____sys_sendmsg+0x4b3/0x840 net/socket.c:2336 ___sys_sendmsg net/socket.c:2390 [inline] __sys_sendmmsg+0x3de/0x860 net/socket.c:2480 __do_sys_sendmmsg net/socket.c:2509 [inline] __se_sys_sendmmsg net/socket.c:2506 [inline] __x64_sys_sendmmsg+0x9c/0xb0 net/socket.c:2506 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e149 Code: 0d b4 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f20231a6c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 000000000045e149 RDX: 0000000000000002 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 000000000119bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000119bf8c R13: 00007ffd81950ccf R14: 00007f20231a79c0 R15: 000000000119bf8c ================================================================================