linux-kernel - [syzbot] WARNING in hfsplus_free

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-ID: <00000000000057fa4605ef101c4c@google.com>
Date:   Mon, 05 Dec 2022 00:02:37 -0800
From:   syzbot <syzbot+8c0bc9f818702ff75b76@...kaller.appspotmail.com>
To:     linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com, willy@...radead.org
Subject: [syzbot] WARNING in hfsplus_free_extents

Hello,

syzbot found the following issue on:

HEAD commit:    c2bf05db6c78 Merge tag 'i2c-for-6.1-rc8' of git://git.kern..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=169efe83880000
kernel config:  https://syzkaller.appspot.com/x/.config?x=2325e409a9a893e1
dashboard link: https://syzkaller.appspot.com/bug?extid=8c0bc9f818702ff75b76
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.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/4476d2eff1ae/disk-c2bf05db.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/0f4a704ffc14/vmlinux-c2bf05db.xz
kernel image: https://storage.googleapis.com/syzbot-assets/dfb09481a98b/bzImage-c2bf05db.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+8c0bc9f818702ff75b76@...kaller.appspotmail.com

------------[ cut here ]------------
WARNING: CPU: 0 PID: 4400 at fs/hfsplus/extents.c:346 hfsplus_free_extents+0x700/0xad0
Modules linked in:
CPU: 0 PID: 4400 Comm: syz-executor.2 Not tainted 6.1.0-rc7-syzkaller-00200-gc2bf05db6c78 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:hfsplus_free_extents+0x700/0xad0 fs/hfsplus/extents.c:346
Code: 0f cb 44 89 ef 89 de e8 3e 27 2f ff 41 39 dd 75 20 49 83 c7 28 e8 90 25 2f ff 41 bc 05 00 00 00 e9 e3 f9 ff ff e8 80 25 2f ff <0f> 0b e9 86 f9 ff ff 44 89 ef 89 de e8 0f 27 2f ff 41 29 dd 73 0a
RSP: 0000:ffffc90015d0f7f0 EFLAGS: 00010287
RAX: ffffffff825b74b0 RBX: ffff888075df8820 RCX: 0000000000040000
RDX: ffffc90005a7c000 RSI: 00000000000104a4 RDI: 00000000000104a5
RBP: ffff88802ea40000 R08: dffffc0000000000 R09: ffffed10055f140a
R10: ffffed10055f140a R11: 1ffff110055f1409 R12: 0000000000000124
R13: 0000000000000027 R14: 0000000000000002 R15: ffff8880685ebd18
FS:  00007f2ea3f28700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4fb2a7fc00 CR3: 000000006dd64000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfsplus_file_truncate+0x768/0xbb0 fs/hfsplus/extents.c:606
 hfsplus_write_begin+0xc2/0xd0 fs/hfsplus/inode.c:56
 cont_expand_zero fs/buffer.c:2383 [inline]
 cont_write_begin+0x2cf/0x860 fs/buffer.c:2446
 hfsplus_write_begin+0x86/0xd0 fs/hfsplus/inode.c:52
 generic_cont_expand_simple+0x151/0x250 fs/buffer.c:2347
 hfsplus_setattr+0x168/0x280 fs/hfsplus/inode.c:263
 notify_change+0xe38/0x10f0 fs/attr.c:420
 do_truncate+0x1fb/0x2e0 fs/open.c:65
 do_sys_ftruncate+0x2eb/0x380 fs/open.c:193
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2ea328c0d9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2ea3f28168 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007f2ea33abf80 RCX: 00007f2ea328c0d9
RDX: 0000000000000000 RSI: 0000000002008000 RDI: 0000000000000005
RBP: 00007f2ea32e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe834f28ff R14: 00007f2ea3f28300 R15: 0000000000022000
 </TASK>


---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@...glegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.