------------[ cut here ]------------
kernel BUG at net/core/gro.c:426!
invalid opcode: 0000 [#1] PREEMPT SMP PTI
CPU: 1 PID: 3398 Comm: syz-executor.0 Not tainted 6.9.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:gro_pull_from_frag0 net/core/gro.c:426 [inline]
RIP: 0010:gro_try_pull_from_frag0 net/core/gro.c:448 [inline]
RIP: 0010:dev_gro_receive+0x7ae/0x7b0 net/core/gro.c:574
Code: 49 39 c3 75 1a e8 92 a6 1a 00 e9 4f fe ff ff 48 89 df 4c 89 fe e8 72 07 00 00 e9 f6 fe ff ff 41 ff d3 66 90 e9 35 fe ff ff 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa
RSP: 0018:ffffc900000e0e48 EFLAGS: 00010297
RAX: 0000000000000004 RBX: 000000000000000a RCX: ffff888112e8c1d0
RDX: 0000000000000000 RSI: ffffffff83b1dd4f RDI: 00000000000000bc
RBP: 00000000000000c0 R08: 0000000000000002 R09: ffffe8ffffd0c478
R10: 000000000000000e R11: ffff888112e8c1d0 R12: ffff888112e8c100
R13: 0000000000000c00 R14: 0000000000000003 R15: ffffe8ffffd0c438
FS:  00007fad0fc236c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fad0eedd1a8 CR3: 000000017badc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 napi_gro_receive+0xd6/0x2e0 net/core/gro.c:642
 gro_cell_poll+0x51/0x80 net/core/gro_cells.c:61
 __napi_poll+0x28/0x160 net/core/dev.c:6722
 napi_poll net/core/dev.c:6791 [inline]
 net_rx_action+0x196/0x370 net/core/dev.c:6907
 handle_softirqs+0x12b/0x3b0 kernel/softirq.c:554
 do_softirq+0x86/0xf0 kernel/softirq.c:455
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x7d/0x80 kernel/softirq.c:382
 tun_rx_batched+0x1cb/0x200
 tun_get_user+0xf67/0x1310 drivers/net/tun.c:2002
 tun_chr_write_iter+0x5a/0xc0 drivers/net/tun.c:2048
 call_write_iter include/linux/fs.h:2110 [inline]
 new_sync_write fs/read_write.c:497 [inline]
 vfs_write+0x3a6/0x430 fs/read_write.c:590
 ksys_write+0x70/0xe0 fs/read_write.c:643
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xe2/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fad0ee7bc2f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 b9 80 02 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 0c 81 02 00 48
RSP: 002b:00007fad0fc23090 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fad0efabf80 RCX: 00007fad0ee7bc2f
RDX: 000000000000007c RSI: 0000000020000080 RDI: 00000000000000c8
RBP: 00007fad0eec949e R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000007c R11: 0000000000000293 R12: 0000000000000000
R13: 000000000000000b R14: 00007fad0efabf80 R15: 00007ffd347c5528
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:gro_pull_from_frag0 net/core/gro.c:426 [inline]
RIP: 0010:gro_try_pull_from_frag0 net/core/gro.c:448 [inline]
RIP: 0010:dev_gro_receive+0x7ae/0x7b0 net/core/gro.c:574
Code: 49 39 c3 75 1a e8 92 a6 1a 00 e9 4f fe ff ff 48 89 df 4c 89 fe e8 72 07 00 00 e9 f6 fe ff ff 41 ff d3 66 90 e9 35 fe ff ff 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa
RSP: 0018:ffffc900000e0e48 EFLAGS: 00010297
RAX: 0000000000000004 RBX: 000000000000000a RCX: ffff888112e8c1d0
RDX: 0000000000000000 RSI: ffffffff83b1dd4f RDI: 00000000000000bc
RBP: 00000000000000c0 R08: 0000000000000002 R09: ffffe8ffffd0c478
R10: 000000000000000e R11: ffff888112e8c1d0 R12: ffff888112e8c100
R13: 0000000000000c00 R14: 0000000000000003 R15: ffffe8ffffd0c438
FS:  00007fad0fc236c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fad0eedd1a8 CR3: 000000017badc000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400