linux-kernel - [syzbot] [nilfs?] [btrfs?] WARNING in filemap_unaccount

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Message-ID: <0000000000005c66ec061902110a@google.com>
Date: Tue, 21 May 2024 19:55:32 -0700
From: syzbot <syzbot+026119922c20a8915631@...kaller.appspotmail.com>
To: brauner@...nel.org, clm@...com, dsterba@...e.com, jack@...e.cz, 
	josef@...icpanda.com, konishi.ryusuke@...il.com, linux-btrfs@...r.kernel.org, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	linux-nilfs@...r.kernel.org, syzkaller-bugs@...glegroups.com, 
	viro@...iv.linux.org.uk
Subject: [syzbot] [nilfs?] [btrfs?] WARNING in filemap_unaccount_folio

Hello,

syzbot found the following issue on:

HEAD commit:    b6394d6f7159 Merge tag 'pull-misc' of git://git.kernel.org..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=142a7cb2980000
kernel config:  https://syzkaller.appspot.com/x/.config?x=713476114e57eef3
dashboard link: https://syzkaller.appspot.com/bug?extid=026119922c20a8915631
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=14d43f84980000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=11d4fadc980000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/e8e1377d4772/disk-b6394d6f.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/19fbbb3b6dd5/vmlinux-b6394d6f.xz
kernel image: https://storage.googleapis.com/syzbot-assets/4dcce16af95d/bzImage-b6394d6f.xz
mounted in repro #1: https://storage.googleapis.com/syzbot-assets/e197bb1019a1/mount_0.gz
mounted in repro #2: https://storage.googleapis.com/syzbot-assets/1c62d475ecf4/mount_2.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+026119922c20a8915631@...kaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 1 PID: 5096 at mm/filemap.c:217 filemap_unaccount_folio+0x6be/0xe40 mm/filemap.c:216
Modules linked in:
CPU: 1 PID: 5096 Comm: syz-executor306 Not tainted 6.9.0-syzkaller-10729-gb6394d6f7159 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:filemap_unaccount_folio+0x6be/0xe40 mm/filemap.c:216
Code: 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 0f b6 04 08 84 c0 0f 85 e5 00 00 00 8b 6d 00 ff c5 e9 45 fa ff ff e8 c3 66 ca ff 90 <0f> 0b 90 48 b8 00 00 00 00 00 fc ff df 41 80 3c 06 00 74 0a 48 8b
RSP: 0018:ffffc9000382f1f8 EFLAGS: 00010093
RAX: ffffffff81cbd3ad RBX: ffff888079ef0380 RCX: ffff88802d4f5a00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000003 R08: ffffffff81cbd2c9 R09: 1ffffd40000c1ec8
R10: dffffc0000000000 R11: fffff940000c1ec9 R12: 1ffffd40000c1ec8
R13: ffffea000060f640 R14: 1ffff1100f3de070 R15: ffffea000060f648
FS:  00007f13ab0c76c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000002ca92000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 delete_from_page_cache_batch+0x173/0xc70 mm/filemap.c:341
 truncate_inode_pages_range+0x364/0xfc0 mm/truncate.c:359
 truncate_inode_pages mm/truncate.c:439 [inline]
 truncate_pagecache mm/truncate.c:732 [inline]
 truncate_setsize+0xcf/0xf0 mm/truncate.c:757
 simple_setattr+0xbe/0x110 fs/libfs.c:886
 notify_change+0xbb4/0xe70 fs/attr.c:499
 do_truncate+0x220/0x310 fs/open.c:65
 handle_truncate fs/namei.c:3308 [inline]
 do_open fs/namei.c:3654 [inline]
 path_openat+0x2a3d/0x3280 fs/namei.c:3807
 do_filp_open+0x235/0x490 fs/namei.c:3834
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1405
 do_sys_open fs/open.c:1420 [inline]
 __do_sys_creat fs/open.c:1496 [inline]
 __se_sys_creat fs/open.c:1490 [inline]
 __x64_sys_creat+0x123/0x170 fs/open.c:1490
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f13ab131c99
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 18 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:00007f13ab0c7198 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f13ab1bf6d8 RCX: 00007f13ab131c99
RDX: 00007f13ab131c99 RSI: 0000000000000000 RDI: 00000000200001c0
RBP: 00007f13ab1bf6d0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f13ab18c160
R13: 000000000000006e R14: 0030656c69662f2e R15: 00007f13ab186bc0
 </TASK>


---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
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If the report is already addressed, let syzbot know by replying with:
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