netdev - [syzbot] [net?] WARNING in bond_xdp_get_xmit

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Message-ID: <0000000000009140e4061a83cda3@google.com>
Date: Mon, 10 Jun 2024 00:07:32 -0700
From: syzbot <syzbot+c187823a52ed505b2257@...kaller.appspotmail.com>
To: andy@...yhouse.net, davem@...emloft.net, edumazet@...gle.com, 
	j.vosburgh@...il.com, kuba@...nel.org, linux-kernel@...r.kernel.org, 
	netdev@...r.kernel.org, pabeni@...hat.com, syzkaller-bugs@...glegroups.com
Subject: [syzbot] [net?] WARNING in bond_xdp_get_xmit_slave (2)

Hello,

syzbot found the following issue on:

HEAD commit:    f8f0de9d58d9 Merge branch 'mlx5-fixes'
git tree:       net
console output: https://syzkaller.appspot.com/x/log.txt?x=1638d2ce980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=b9016f104992d69c
dashboard link: https://syzkaller.appspot.com/bug?extid=c187823a52ed505b2257
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f3fd9f91ee48/disk-f8f0de9d.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/4f0153e67f84/vmlinux-f8f0de9d.xz
kernel image: https://storage.googleapis.com/syzbot-assets/6abab02f18cf/bzImage-f8f0de9d.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+c187823a52ed505b2257@...kaller.appspotmail.com

bond9: Unknown bonding mode 6 for xdp xmit
------------[ cut here ]------------
WARNING: CPU: 1 PID: 14901 at drivers/net/bonding/bond_main.c:5502 bond_xdp_get_xmit_slave+0x519/0x690 drivers/net/bonding/bond_main.c:5502
Modules linked in:
CPU: 1 PID: 14901 Comm: syz-executor.1 Not tainted 6.10.0-rc1-syzkaller-00179-gf8f0de9d58d9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:bond_xdp_get_xmit_slave+0x519/0x690 drivers/net/bonding/bond_main.c:5502
Code: be 69 13 00 00 48 c7 c2 a0 73 54 8c e8 d0 35 1e fb eb 98 e8 69 96 41 fb 4c 89 e7 48 c7 c6 80 94 54 8c 89 da e8 48 50 31 05 90 <0f> 0b 90 eb a6 e8 4d 96 41 fb 48 85 db 74 0a e8 43 96 41 fb e9 72
RSP: 0018:ffffc9000da6f6c8 EFLAGS: 00010246
RAX: 2059da9abcd8c700 RBX: 0000000000000006 RCX: 2059da9abcd8c700
RDX: ffffc9001616c000 RSI: 0000000000002218 RDI: 0000000000002219
RBP: ffff888056026038 R08: ffffffff8176812c R09: fffffbfff1c3998c
R10: dffffc0000000000 R11: fffffbfff1c3998c R12: ffff888057b5c000
R13: ffff888057b5c000 R14: ffff888057b5cca0 R15: dffffc0000000000
FS:  00007f8b32a0a6c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30d22000 CR3: 00000000629b4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 xdp_master_redirect+0x104/0x250 net/core/filter.c:4317
 bpf_prog_run_xdp include/net/xdp.h:518 [inline]
 xdp_test_run_batch net/bpf/test_run.c:313 [inline]
 bpf_test_run_xdp_live+0x15eb/0x1e60 net/bpf/test_run.c:384
 bpf_prog_test_run_xdp+0x80e/0x11b0 net/bpf/test_run.c:1275
 bpf_prog_test_run+0x33a/0x3b0 kernel/bpf/syscall.c:4291
 __sys_bpf+0x48d/0x810 kernel/bpf/syscall.c:5705
 __do_sys_bpf kernel/bpf/syscall.c:5794 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5792 [inline]
 __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5792
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8b31c7cf69
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f8b32a0a0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f8b31db4050 RCX: 00007f8b31c7cf69
RDX: 0000000000000050 RSI: 0000000020000040 RDI: 000000000000000a
RBP: 00007f8b31cda6fe R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f8b31db4050 R15: 00007fff9cacb078
 </TASK>


---
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