netdev - [syzbot] [net?] BUG: MAX_LOCKDEP_CHAIN

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Message-ID: <66e55308.050a0220.1f4381.0004.GAE@google.com>
Date: Sat, 14 Sep 2024 02:10:32 -0700
From: syzbot <syzbot+74f79df25c37437e4d5a@...kaller.appspotmail.com>
To: chao@...nel.org, jaegeuk@...nel.org, 
	linux-f2fs-devel@...ts.sourceforge.net, linux-kernel@...r.kernel.org, 
	netdev@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: [syzbot] [net?] BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low! (7)

Hello,

syzbot found the following issue on:

HEAD commit:    5f5673607153 Merge branch 'for-next/core' into for-kernelci
git tree:       git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci
console output: https://syzkaller.appspot.com/x/log.txt?x=141567c7980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=dedbcb1ff4387972
dashboard link: https://syzkaller.appspot.com/bug?extid=74f79df25c37437e4d5a
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64

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

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/40172aed5414/disk-5f567360.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/58372f305e9d/vmlinux-5f567360.xz
kernel image: https://storage.googleapis.com/syzbot-assets/d2aae6fa798f/Image-5f567360.gz.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+74f79df25c37437e4d5a@...kaller.appspotmail.com

F2FS-fs (loop3): Disable nat_bits due to incorrect cp_ver (10241045589465957861, 39874397669)
F2FS-fs (loop3): Try to recover 1th superblock, ret: 0
F2FS-fs (loop3): Mounted with checkpoint version = 48b305e5
BUG: MAX_LOCKDEP_CHAIN_HLOCKS too low!
turning off the locking correctness validator.
CPU: 0 UID: 0 PID: 8464 Comm: syz.3.313 Not tainted 6.11.0-rc7-syzkaller-g5f5673607153 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:319
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:326
 __dump_stack lib/dump_stack.c:93 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:119
 dump_stack+0x1c/0x28 lib/dump_stack.c:128
 lookup_chain_cache_add kernel/locking/lockdep.c:3815 [inline]
 validate_chain kernel/locking/lockdep.c:3836 [inline]
 __lock_acquire+0x1fa0/0x779c kernel/locking/lockdep.c:5142
 lock_acquire+0x240/0x728 kernel/locking/lockdep.c:5759
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162
 sb_mark_inode_writeback+0x80/0x47c fs/fs-writeback.c:1306
 __folio_start_writeback+0x630/0xac0 mm/page-writeback.c:3150
 set_page_writeback+0x5c/0x78 mm/folio-compat.c:45
 __write_node_page+0xa90/0x1ba0 fs/f2fs/node.c:1687
 f2fs_sync_node_pages+0x11ec/0x1a88 fs/f2fs/node.c:2057
 block_operations fs/f2fs/checkpoint.c:1290 [inline]
 f2fs_write_checkpoint+0xa5c/0x16f4 fs/f2fs/checkpoint.c:1665
 f2fs_issue_checkpoint+0x284/0x3b4
 f2fs_sync_fs+0x1f0/0x540 fs/f2fs/super.c:1708
 f2fs_create+0x3d8/0x494 fs/f2fs/namei.c:389
 lookup_open fs/namei.c:3578 [inline]
 open_last_lookups fs/namei.c:3647 [inline]
 path_openat+0xfb4/0x29f8 fs/namei.c:3883
 do_filp_open+0x1bc/0x3cc fs/namei.c:3913
 do_sys_openat2+0x124/0x1b8 fs/open.c:1416
 do_sys_open fs/open.c:1431 [inline]
 __do_sys_openat fs/open.c:1447 [inline]
 __se_sys_openat fs/open.c:1442 [inline]
 __arm64_sys_openat+0x1f0/0x240 fs/open.c:1442
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598

---
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