netdev - [syzbot] [wireguard?] WARNING: locking bug in wg_packet_decrypt

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Message-ID: <00000000000089d850061a15d886@google.com>
Date: Tue, 04 Jun 2024 12:56:29 -0700
From: syzbot <syzbot+9f1d21c20c7306ca9417@...kaller.appspotmail.com>
To: Jason@...c4.com, davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org, 
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org, pabeni@...hat.com, 
	syzkaller-bugs@...glegroups.com, wireguard@...ts.zx2c4.com
Subject: [syzbot] [wireguard?] WARNING: locking bug in wg_packet_decrypt_worker

Hello,

syzbot found the following issue on:

HEAD commit:    83814698cf48 Merge tag 'powerpc-6.10-2' of git://git.kerne..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=16746d3a980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=733cc7a95171d8e7
dashboard link: https://syzkaller.appspot.com/bug?extid=9f1d21c20c7306ca9417
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: i386

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

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-83814698.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/7042fdcb685d/vmlinux-83814698.xz
kernel image: https://storage.googleapis.com/syzbot-assets/9f795e13834f/bzImage-83814698.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+9f1d21c20c7306ca9417@...kaller.appspotmail.com

------------[ cut here ]------------
DEBUG_LOCKS_WARN_ON(1)
WARNING: CPU: 0 PID: 10 at kernel/locking/lockdep.c:232 hlock_class kernel/locking/lockdep.c:232 [inline]
WARNING: CPU: 0 PID: 10 at kernel/locking/lockdep.c:232 hlock_class+0xfa/0x130 kernel/locking/lockdep.c:221
Modules linked in:
CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 6.10.0-rc1-syzkaller-00304-g83814698cf48 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: wg-crypt-wg0 wg_packet_decrypt_worker
RIP: 0010:hlock_class kernel/locking/lockdep.c:232 [inline]
RIP: 0010:hlock_class+0xfa/0x130 kernel/locking/lockdep.c:221
Code: b6 14 11 38 d0 7c 04 84 d2 75 43 8b 05 b3 39 77 0e 85 c0 75 19 90 48 c7 c6 00 bd 2c 8b 48 c7 c7 a0 b7 2c 8b e8 97 47 e5 ff 90 <0f> 0b 90 90 90 31 c0 eb 9e e8 88 f7 7f 00 e9 1c ff ff ff 48 c7 c7
RSP: 0018:ffffc900003c7a00 EFLAGS: 00010082
RAX: 0000000000000000 RBX: 0000000000000f2b RCX: ffffffff81510229
RDX: ffff888015f38000 RSI: ffffffff81510236 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 000000002d2d2d2d R12: 0000000000000000
R13: 0000000000000000 R14: ffff888015f38b30 R15: 0000000000000f2b
FS:  0000000000000000(0000) GS:ffff88802c000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000f743fb94 CR3: 000000005ff86000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 check_wait_context kernel/locking/lockdep.c:4773 [inline]
 __lock_acquire+0x3f2/0x3b30 kernel/locking/lockdep.c:5087
 lock_acquire kernel/locking/lockdep.c:5754 [inline]
 lock_acquire+0x1b1/0x560 kernel/locking/lockdep.c:5719
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
 _raw_spin_lock_bh+0x33/0x40 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 ptr_ring_consume_bh include/linux/ptr_ring.h:365 [inline]
 wg_packet_decrypt_worker+0x2aa/0x530 drivers/net/wireguard/receive.c:499
 process_one_work+0x958/0x1ad0 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x6c8/0xf70 kernel/workqueue.c:3393
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>


---
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