skbuff: skb_over_panic: text:ffffffff8422f100 len:428 put:172 head:ffff8881123d0c00 data:ffff8881123d0c00 tail:0x1ac end:0x140 dev: ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:205! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 PID: 4073 Comm: dhcpcd Not tainted 6.10.0-rc2-syzkaller-00024-g5821bf2dffbe #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 RIP: 0010:skb_panic+0x157/0x1d0 net/core/skbuff.c:205 Code: b6 04 01 84 c0 74 04 3c 03 7e 21 8b 4b 70 41 56 45 89 e8 48 c7 c7 60 3e 81 87 41 57 56 48 89 ee 52 4c 89 e2 e8 aa 86 b3 fb 90 <0f> 0b 4c 89 4c 24 10 48 89 54 24 08 48 89 34 24 e8 34 34 25 fc 4c RSP: 0018:ffffc90002d2f2a8 EFLAGS: 00010286 RAX: 0000000000000089 RBX: ffff888109f0d140 RCX: ffffffff813405b9 RDX: 0000000000000000 RSI: ffffffff81349306 RDI: 0000000000000005 RBP: ffffffff878150a0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000403 R11: 0000000000000001 R12: ffffffff8422f100 R13: 00000000000000ac R14: ffffffff87813e20 R15: 0000000000000140 FS: 00007fce54b32740(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd2162fa38 CR3: 000000011b768000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_over_panic net/core/skbuff.c:210 [inline] skb_put+0x174/0x1b0 net/core/skbuff.c:2579 skb_put_zero include/linux/skbuff.h:2677 [inline] cdc_ncm_ndp16 drivers/net/usb/cdc_ncm.c:1135 [inline] cdc_ncm_fill_tx_frame+0x2930/0x38b0 drivers/net/usb/cdc_ncm.c:1310 cdc_ncm_tx_fixup+0xed/0x140 drivers/net/usb/cdc_ncm.c:1537 usbnet_start_xmit+0x15f/0x2440 drivers/net/usb/usbnet.c:1365 __netdev_start_xmit include/linux/netdevice.h:4882 [inline] netdev_start_xmit include/linux/netdevice.h:4896 [inline] xmit_one net/core/dev.c:3578 [inline] dev_hard_start_xmit+0x143/0x790 net/core/dev.c:3594 sch_direct_xmit+0x18e/0x840 net/sched/sch_generic.c:343 __dev_xmit_skb net/core/dev.c:3807 [inline] __dev_queue_xmit+0x12af/0x4130 net/core/dev.c:4359 dev_queue_xmit include/linux/netdevice.h:3095 [inline] packet_xmit+0x246/0x360 net/packet/af_packet.c:276 packet_snd net/packet/af_packet.c:3080 [inline] packet_sendmsg+0x24c0/0x5200 net/packet/af_packet.c:3112 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] sock_write_iter+0x50a/0x5c0 net/socket.c:1160 do_iter_readv_writev+0x504/0x780 fs/read_write.c:741 vfs_writev+0x36f/0xde0 fs/read_write.c:971 do_writev+0x287/0x370 fs/read_write.c:1018 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fce54c00e03 Code: 89 c7 48 89 44 24 08 e8 6a f2 f9 ff 48 8b 44 24 08 48 83 c4 28 c3 c3 64 8b 04 25 18 00 00 00 85 c0 75 20 b8 14 00 00 00 0f 05 <48> 3d 00 f0 ff ff 76 6d 48 8b 15 f6 5f 0d 00 f7 d8 64 89 02 48 83 RSP: 002b:00007ffd2162f9d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007ffd2163fc88 RCX: 00007fce54c00e03 RDX: 0000000000000002 RSI: 00007ffd2162f9f0 RDI: 0000000000000005 RBP: 00005598ab4289c7 R08: 0000000042424242 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00005598ca306000 R14: 00007ffd2162fa88 R15: 00007ffd2162fa38 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:skb_panic+0x157/0x1d0 net/core/skbuff.c:205 Code: b6 04 01 84 c0 74 04 3c 03 7e 21 8b 4b 70 41 56 45 89 e8 48 c7 c7 60 3e 81 87 41 57 56 48 89 ee 52 4c 89 e2 e8 aa 86 b3 fb 90 <0f> 0b 4c 89 4c 24 10 48 89 54 24 08 48 89 34 24 e8 34 34 25 fc 4c RSP: 0018:ffffc90002d2f2a8 EFLAGS: 00010286 RAX: 0000000000000089 RBX: ffff888109f0d140 RCX: ffffffff813405b9 RDX: 0000000000000000 RSI: ffffffff81349306 RDI: 0000000000000005 RBP: ffffffff878150a0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000080000403 R11: 0000000000000001 R12: ffffffff8422f100 R13: 00000000000000ac R14: ffffffff87813e20 R15: 0000000000000140 FS: 00007fce54b32740(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd2162fa38 CR3: 000000011b768000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400