linux-kernel - [syzbot] [fs?] kernel BUG in submit_bh

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Message-ID: <670cb3f6.050a0220.3e960.0052.GAE@google.com>
Date: Sun, 13 Oct 2024 23:02:30 -0700
From: syzbot <syzbot+985ada84bf055a575c07@...kaller.appspotmail.com>
To: konishi.ryusuke@...il.com, linux-fsdevel@...r.kernel.org, 
	linux-kernel@...r.kernel.org, linux-nilfs@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com
Subject: [syzbot] [fs?] kernel BUG in submit_bh_wbc (3)

Hello,

syzbot found the following issue on:

HEAD commit:    6485cf5ea253 Merge tag 'hid-for-linus-2024101301' of git:/..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=142f585f980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=164d2822debd8b0d
dashboard link: https://syzkaller.appspot.com/bug?extid=985ada84bf055a575c07
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/f39f2ba63ff0/disk-6485cf5e.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1b68f3c352ce/vmlinux-6485cf5e.xz
kernel image: https://storage.googleapis.com/syzbot-assets/38070176e828/bzImage-6485cf5e.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+985ada84bf055a575c07@...kaller.appspotmail.com

------------[ cut here ]------------
kernel BUG at fs/buffer.c:2785!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 0 UID: 0 PID: 5968 Comm: syz.0.65 Not tainted 6.12.0-rc3-syzkaller-00007-g6485cf5ea253 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:submit_bh_wbc+0x556/0x560 fs/buffer.c:2785
Code: 89 fa e8 dd d7 cb 02 e9 95 fe ff ff e8 63 9b 74 ff 90 0f 0b e8 5b 9b 74 ff 90 0f 0b e8 53 9b 74 ff 90 0f 0b e8 4b 9b 74 ff 90 <0f> 0b e8 43 9b 74 ff 90 0f 0b 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000303e9f8 EFLAGS: 00010287
RAX: ffffffff82204bb5 RBX: 0000000000000154 RCX: 0000000000040000
RDX: ffffc900044b1000 RSI: 0000000000000a81 RDI: 0000000000000a82
RBP: 0000000000000100 R08: ffffffff82204779 R09: 1ffff1100ae83f79
R10: dffffc0000000000 R11: ffffed100ae83f7a R12: 0000000000000000
R13: ffff88805741fbc8 R14: 0000000000000000 R15: 1ffff1100ae83f79
FS:  00007fbfb2dcc6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f08b6361160 CR3: 000000005f354000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 submit_bh fs/buffer.c:2824 [inline]
 block_read_full_folio+0x93b/0xcd0 fs/buffer.c:2451
 do_mpage_readpage+0x1a73/0x1c80 fs/mpage.c:317
 mpage_read_folio+0x108/0x1e0 fs/mpage.c:392
 filemap_read_folio+0x14b/0x630 mm/filemap.c:2367
 do_read_cache_folio+0x3f5/0x850 mm/filemap.c:3825
 read_mapping_folio include/linux/pagemap.h:1011 [inline]
 nilfs_get_folio+0x4b/0x240 fs/nilfs2/dir.c:190
 nilfs_find_entry+0x138/0x650 fs/nilfs2/dir.c:313
 nilfs_inode_by_name+0xa8/0x210 fs/nilfs2/dir.c:393
 nilfs_lookup+0x76/0x110 fs/nilfs2/namei.c:62
 __lookup_slow+0x28c/0x3f0 fs/namei.c:1732
 lookup_slow fs/namei.c:1749 [inline]
 lookup_one_unlocked+0x1a4/0x290 fs/namei.c:2912
 ovl_lookup_positive_unlocked fs/overlayfs/namei.c:210 [inline]
 ovl_lookup_single+0x200/0xbd0 fs/overlayfs/namei.c:240
 ovl_lookup_layer+0x417/0x510 fs/overlayfs/namei.c:333
 ovl_lookup+0x5d8/0x2a60 fs/overlayfs/namei.c:1068
 lookup_open fs/namei.c:3573 [inline]
 open_last_lookups fs/namei.c:3694 [inline]
 path_openat+0x11a7/0x3590 fs/namei.c:3930
 do_filp_open+0x235/0x490 fs/namei.c:3960
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1415
 do_sys_open fs/open.c:1430 [inline]
 __do_sys_open fs/open.c:1438 [inline]
 __se_sys_open fs/open.c:1434 [inline]
 __x64_sys_open+0x225/0x270 fs/open.c:1434
 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: 0033:0x7fbfb1f7dff9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbfb2dcc038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fbfb2135f80 RCX: 00007fbfb1f7dff9
RDX: 0000000000000000 RSI: 000000000014d27e RDI: 0000000020000180
RBP: 00007fbfb1ff0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fbfb2135f80 R15: 00007ffe859206a8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:submit_bh_wbc+0x556/0x560 fs/buffer.c:2785
Code: 89 fa e8 dd d7 cb 02 e9 95 fe ff ff e8 63 9b 74 ff 90 0f 0b e8 5b 9b 74 ff 90 0f 0b e8 53 9b 74 ff 90 0f 0b e8 4b 9b 74 ff 90 <0f> 0b e8 43 9b 74 ff 90 0f 0b 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000303e9f8 EFLAGS: 00010287
RAX: ffffffff82204bb5 RBX: 0000000000000154 RCX: 0000000000040000
RDX: ffffc900044b1000 RSI: 0000000000000a81 RDI: 0000000000000a82
RBP: 0000000000000100 R08: ffffffff82204779 R09: 1ffff1100ae83f79
R10: dffffc0000000000 R11: ffffed100ae83f7a R12: 0000000000000000
R13: ffff88805741fbc8 R14: 0000000000000000 R15: 1ffff1100ae83f79
FS:  00007fbfb2dcc6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f08b6361160 CR3: 000000005f354000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


---
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