linux-kernel - [syzbot] BUG: looking up invalid subclass: ADDR

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Message-ID: <0000000000001ee18405e929dc7f@google.com>
Date:   Tue, 20 Sep 2022 23:14:39 -0700
From:   syzbot <syzbot+39d19414bd6553c23c40@...kaller.appspotmail.com>
To:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com, viro@...iv.linux.org.uk
Subject: [syzbot] BUG: looking up invalid subclass: ADDR

Hello,

syzbot found the following issue on:

HEAD commit:    6879c2d3b960 Merge tag 'pinctrl-v6.0-2' of git://git.kerne..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=154d7fbf080000
kernel config:  https://syzkaller.appspot.com/x/.config?x=9e66520f224211a2
dashboard link: https://syzkaller.appspot.com/bug?extid=39d19414bd6553c23c40
compiler:       Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2

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

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+39d19414bd6553c23c40@...kaller.appspotmail.com

BUG: looking up invalid subclass: 4294967295
turning off the locking correctness validator.
CPU: 0 PID: 23921 Comm: syz-executor.4 Not tainted 6.0.0-rc5-syzkaller-00089-g6879c2d3b960 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 look_up_lock_class+0xdf/0x120 kernel/locking/lockdep.c:900
 register_lock_class+0xfe/0x9b0 kernel/locking/lockdep.c:1287
 __lock_acquire+0xe4/0x1f60 kernel/locking/lockdep.c:4932
 lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5666
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:349 [inline]
 iput_final fs/inode.c:1737 [inline]
 iput+0x3ee/0x760 fs/inode.c:1774
 ntfs_fill_super+0x3c6c/0x4420 fs/ntfs3/super.c:1190
 get_tree_bdev+0x400/0x620 fs/super.c:1323
 vfs_get_tree+0x88/0x270 fs/super.c:1530
 do_new_mount+0x289/0xad0 fs/namespace.c:3040
 do_mount fs/namespace.c:3383 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3568
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc89668a93a
Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc8977aef88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007fc89668a93a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fc8977aefe0
RBP: 00007fc8977af020 R08: 00007fc8977af020 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 00007fc8977aefe0 R15: 0000000020003580
 </TASK>
================================================================================
UBSAN: array-index-out-of-bounds in kernel/locking/lockdep.c:1298:27
index 4294967295 is out of range for type 'struct lockdep_subclass_key [8]'
CPU: 0 PID: 23921 Comm: syz-executor.4 Not tainted 6.0.0-rc5-syzkaller-00089-g6879c2d3b960 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
 ubsan_epilogue lib/ubsan.c:151 [inline]
 __ubsan_handle_out_of_bounds+0x107/0x150 lib/ubsan.c:283
 register_lock_class+0x9a6/0x9b0 kernel/locking/lockdep.c:1298
 __lock_acquire+0xe4/0x1f60 kernel/locking/lockdep.c:4932
 lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5666
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:349 [inline]
 iput_final fs/inode.c:1737 [inline]
 iput+0x3ee/0x760 fs/inode.c:1774
 ntfs_fill_super+0x3c6c/0x4420 fs/ntfs3/super.c:1190
 get_tree_bdev+0x400/0x620 fs/super.c:1323
 vfs_get_tree+0x88/0x270 fs/super.c:1530
 do_new_mount+0x289/0xad0 fs/namespace.c:3040
 do_mount fs/namespace.c:3383 [inline]
 __do_sys_mount fs/namespace.c:3591 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3568
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fc89668a93a
Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc8977aef88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 0000000020000200 RCX: 00007fc89668a93a
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 00007fc8977aefe0
RBP: 00007fc8977af020 R08: 00007fc8977af020 R09: 0000000020000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000020000000
R13: 0000000020000100 R14: 00007fc8977aefe0 R15: 0000000020003580
 </TASK>
================================================================================


---
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