skbuff: skb_over_panic: text:ffffffff8616ce7f len:20 put:20 head:0000000000000000 data:0000000000000000 tail:0x14 end:0x0 dev: ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:122! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 5167 Comm: kworker/1:3 Not tainted 6.2.0-rc7-next-20230208-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Workqueue: events nsim_dev_trap_report_work RIP: 0010:skb_panic+0x152/0x1d0 net/core/skbuff.c:122 Code: 0f b6 04 01 84 c0 74 04 3c 03 7e 20 8b 4b 70 41 56 45 89 e8 48 c7 c7 40 3a 5c 8b 41 57 56 48 89 ee 52 4c 89 e2 e8 de 42 5d f9 <0f> 0b 4c 89 4c 24 10 48 89 54 24 08 48 89 34 24 e8 29 81 c8 f9 4c RSP: 0018:ffffc90004857bc0 EFLAGS: 00010286 RAX: 0000000000000084 RBX: ffff8880751643c0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8168db7c RDI: 0000000000000005 RBP: ffffffff8b5c4880 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000090 R12: ffffffff8616ce7f R13: 0000000000000014 R14: ffffffff8b5c3a00 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32c2d000 CR3: 0000000049eff000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_over_panic net/core/skbuff.c:127 [inline] skb_put+0x16f/0x1a0 net/core/skbuff.c:2263 nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:764 [inline] nsim_dev_trap_report drivers/net/netdevsim/dev.c:808 [inline] nsim_dev_trap_report_work+0x4df/0xc80 drivers/net/netdevsim/dev.c:853 process_one_work+0x9bf/0x1820 kernel/workqueue.c:2390 worker_thread+0x669/0x1090 kernel/workqueue.c:2537 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:skb_panic+0x152/0x1d0 net/core/skbuff.c:122 Code: 0f b6 04 01 84 c0 74 04 3c 03 7e 20 8b 4b 70 41 56 45 89 e8 48 c7 c7 40 3a 5c 8b 41 57 56 48 89 ee 52 4c 89 e2 e8 de 42 5d f9 <0f> 0b 4c 89 4c 24 10 48 89 54 24 08 48 89 34 24 e8 29 81 c8 f9 4c RSP: 0018:ffffc90004857bc0 EFLAGS: 00010286 RAX: 0000000000000084 RBX: ffff8880751643c0 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffffffff8168db7c RDI: 0000000000000005 RBP: ffffffff8b5c4880 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000090 R12: ffffffff8616ce7f R13: 0000000000000014 R14: ffffffff8b5c3a00 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32c2d000 CR3: 0000000049eff000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400