syzbot

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Too BIG xdp->frame_sz = 131072
WARNING: CPU: 0 PID: 4999 at net/core/filter.c:4120 ____bpf_xdp_adjust_tail net/core/filter.c:4120 [inline]
WARNING: CPU: 0 PID: 4999 at net/core/filter.c:4120 bpf_xdp_adjust_tail+0x461/0x9a0 net/core/filter.c:4102
Modules linked in:
CPU: 0 PID: 4999 Comm: syz-executor184 Not tainted 6.4.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
RIP: 0010:____bpf_xdp_adjust_tail net/core/filter.c:4120 [inline]
RIP: 0010:bpf_xdp_adjust_tail+0x461/0x9a0 net/core/filter.c:4102
Code: ff 89 de e8 d1 80 6b f9 84 db 0f 85 59 fd ff ff e8 e4 84 6b f9 89 ee 48 c7 c7 40 ec 5e 8b c6 05 71 02 4c 06 01 e8 0f 3f 33 f9 <0f> 0b e9 38 fd ff ff e8 a3 4e be f9 e9 64 fc ff ff e8 99 4e be f9
RSP: 0018:ffffc90003a7f8f8 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffff88802841bb80 RSI: ffffffff814c03e7 RDI: 0000000000000001
RBP: 0000000000020000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffffffffffffffea
R13: ffff888075a8feef R14: 0000000000000000 R15: ffffc90003a7fab0
FS:  000055555562c300(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020010000 CR3: 0000000026f25000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 bpf_prog_4add87e5301a4105+0x1a/0x1c
 __bpf_prog_run include/linux/filter.h:600 [inline]
 bpf_prog_run_xdp include/linux/filter.h:775 [inline]
 bpf_prog_run_generic_xdp+0x578/0x1210 net/core/dev.c:4760
 netif_receive_generic_xdp+0x2e8/0x7d0 net/core/dev.c:4846
 do_xdp_generic net/core/dev.c:4905 [inline]
 do_xdp_generic+0x9a/0x1b0 net/core/dev.c:4898
 tun_get_user+0x1bf3/0x3b00 drivers/net/tun.c:1919
 tun_chr_write_iter+0xdf/0x200 drivers/net/tun.c:2043
 call_write_iter include/linux/fs.h:1868 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x945/0xd50 fs/read_write.c:584
 ksys_write+0x12b/0x250 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fbd20ed0a63
Code: 5d 41 5c 41 5d 41 5e e9 9b fd ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 55 c3 0f 1f 40 00 48 83 ec 28 48 89 54 24 18
RSP: 002b:00007ffc5a94be08 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ffc5a94be30 RCX: 00007fbd20ed0a63
RDX: 000000000000fdef RSI: 0000000020000300 RDI: 00000000000000c8
RBP: 0000000000000003 R08: bb1414ac00000050 R09: bb1414ac00000050
R10: bb1414ac00000050 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc5a94be20 R14: 00007ffc5a94be18 R15: 00007ffc5a94be14
 </TASK>