skbuff: skb_over_panic: text:ffffffff88f4ca61 len:4096 put:4096 head:ffff88801df83400 data:ffff88801df83400 tail:0x1000 end:0xc0 dev: ------------[ cut here ]------------ kernel BUG at net/core/skbuff.c:111! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 19 Comm: ksoftirqd/1 Not tainted 5.14.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:skb_panic+0x14d/0x150 net/core/skbuff.c:107 Code: 48 8b 74 24 08 48 8b 54 24 10 8b 0c 24 44 8b 44 24 04 49 89 e9 b8 00 00 00 00 53 41 55 41 54 41 57 e8 1f f8 76 f9 48 83 c4 20 <0f> 0b 90 55 41 57 41 56 41 55 41 54 53 48 83 ec 70 4c 89 cb 4c 89 RSP: 0018:ffffc90000d97610 EFLAGS: 00010282 RAX: 000000000000008b RBX: ffffffff8b54ab60 RCX: ed1a8f4057501c00 RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000 RBP: ffff88801df83400 R08: ffffffff81663b82 R09: ffffed10173a9798 R10: ffffed10173a9798 R11: 0000000000000000 R12: 0000000000001000 R13: 00000000000000c0 R14: dffffc0000000000 R15: ffff88801df83400 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000541198 CR3: 0000000082f4e000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: skb_over_panic+0x25/0x30 net/core/skbuff.c:116 skb_put+0x1e0/0x1e0 net/core/skbuff.c:1923 isotp_rcv_cf net/can/isotp.c:570 [inline] isotp_rcv+0x1d21/0x2790 net/can/isotp.c:668 deliver net/can/af_can.c:574 [inline] can_rcv_filter+0x61e/0x800 net/can/af_can.c:635 can_receive+0x2e8/0x410 net/can/af_can.c:665 can_rcv+0xda/0x1f0 net/can/af_can.c:696 __netif_receive_skb_one_core net/core/dev.c:5486 [inline] __netif_receive_skb+0x1d1/0x500 net/core/dev.c:5600 process_backlog+0x4d8/0x940 net/core/dev.c:6480 __napi_poll+0xba/0x4f0 net/core/dev.c:7035 napi_poll net/core/dev.c:7102 [inline] net_rx_action+0x62c/0xf30 net/core/dev.c:7189 __do_softirq+0x372/0x783 kernel/softirq.c:558 run_ksoftirqd+0xa2/0x100 kernel/softirq.c:920 smpboot_thread_fn+0x533/0x9d0 kernel/smpboot.c:164 kthread+0x453/0x480 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Modules linked in: ---[ end trace fbcda064e6dc8fc8 ]--- RIP: 0010:skb_panic+0x14d/0x150 net/core/skbuff.c:107 Code: 48 8b 74 24 08 48 8b 54 24 10 8b 0c 24 44 8b 44 24 04 49 89 e9 b8 00 00 00 00 53 41 55 41 54 41 57 e8 1f f8 76 f9 48 83 c4 20 <0f> 0b 90 55 41 57 41 56 41 55 41 54 53 48 83 ec 70 4c 89 cb 4c 89 RSP: 0018:ffffc90000d97610 EFLAGS: 00010282 RAX: 000000000000008b RBX: ffffffff8b54ab60 RCX: ed1a8f4057501c00 RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000 RBP: ffff88801df83400 R08: ffffffff81663b82 R09: ffffed10173a9798 R10: ffffed10173a9798 R11: 0000000000000000 R12: 0000000000001000 R13: 00000000000000c0 R14: dffffc0000000000 R15: ffff88801df83400 FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000541198 CR3: 0000000082f4e000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400