tipc: Started in network mode tipc: Node identity 5e9377e8cc82, cluster identity 4711 tipc: tipc_buf_acquire skbuff: skb_over_panic: text:ffffffff8fe53c01 len:76 put:76 head:0000000000000000 data:00000000000000d0 tail:0x11c end:0x0 dev: ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:212! Oops: invalid opcode: 0000 [#1] SMP PTI CPU: 0 UID: 0 PID: 6600 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(none) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:skb_panic+0x2d3/0x340 net/core/skbuff.c:212 Code: d0 44 8b 45 cc 4c 8b 8d 58 ff ff ff 41 52 ff b5 70 ff ff ff ff b5 68 ff ff ff ff b5 60 ff ff ff e8 d2 5d ee ff 48 83 c4 20 90 <0f> 0b e8 c6 8f 69 01 48 83 7d a0 00 0f 84 6a ff ff ff 48 8b 7d c0 RSP: 0018:ffff88801f8cf0e8 EFLAGS: 00010286 RAX: 0000000000000085 RBX: ffff88811718cda0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: ffff88801f8cf1a0 R08: ffffea000000000f R09: 0000000000000000 R10: ffff888237c7e028 R11: ffff88823f278d40 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f26537fe6c0(0000) GS:ffff8881aaf8d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2654574620 CR3: 0000000049ab8000 CR4: 00000000003526f0 Call Trace: skb_over_panic net/core/skbuff.c:217 [inline] skb_put+0x1f5/0x250 net/core/skbuff.c:2583 tipc_buf_acquire+0x141/0x1b0 net/tipc/msg.c:77 tipc_disc_create+0x12f/0x870 net/tipc/discover.c:359 tipc_enable_bearer net/tipc/bearer.c:348 [inline] __tipc_nl_bearer_enable+0x1f61/0x2a00 net/tipc/bearer.c:1047 __tipc_nl_compat_doit net/tipc/netlink_compat.c:371 [inline] tipc_nl_compat_doit+0x67b/0xa10 net/tipc/netlink_compat.c:393 tipc_nl_compat_handle net/tipc/netlink_compat.c:-1 [inline] tipc_nl_compat_recv+0x1007/0x1670 net/tipc/netlink_compat.c:1321 genl_family_rcv_msg_doit+0x338/0x3f0 net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0xacf/0xc10 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x54d/0x680 net/netlink/af_netlink.c:2552 genl_rcv+0x41/0x60 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0xf04/0x12b0 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x10b3/0x1250 net/netlink/af_netlink.c:1896 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg+0x333/0x3d0 net/socket.c:742 ____sys_sendmsg+0x7e0/0xd80 net/socket.c:2630 ___sys_sendmsg+0x271/0x3b0 net/socket.c:2684 __sys_sendmsg net/socket.c:2716 [inline] __do_sys_sendmsg net/socket.c:2721 [inline] __se_sys_sendmsg net/socket.c:2719 [inline] __x64_sys_sendmsg+0x211/0x3e0 net/socket.c:2719 x64_sys_call+0x1dfd/0x3e30 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xd9/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f265458eb69 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f26537fe038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f26547b5fa0 RCX: 00007f265458eb69 RDX: 0000000000000000 RSI: 00002000000002c0 RDI: 0000000000000006 RBP: 00007f2654611df1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f26547b5fa0 R15: 00007ffe744cefd8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:skb_panic+0x2d3/0x340 net/core/skbuff.c:212 Code: d0 44 8b 45 cc 4c 8b 8d 58 ff ff ff 41 52 ff b5 70 ff ff ff ff b5 68 ff ff ff ff b5 60 ff ff ff e8 d2 5d ee ff 48 83 c4 20 90 <0f> 0b e8 c6 8f 69 01 48 83 7d a0 00 0f 84 6a ff ff ff 48 8b 7d c0 RSP: 0018:ffff88801f8cf0e8 EFLAGS: 00010286 RAX: 0000000000000085 RBX: ffff88811718cda0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: ffff88801f8cf1a0 R08: ffffea000000000f R09: 0000000000000000 R10: ffff888237c7e028 R11: ffff88823f278d40 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f26537fe6c0(0000) GS:ffff8881aaf8d000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f2654574620 CR3: 0000000049ab8000 CR4: 00000000003526f0