linux-kernel - Re: [syzbot] [ntfs3?] WARNING in indx_insert_into

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Message-ID: <000000000000c933dd060ae50a53@google.com>
Date:   Fri, 24 Nov 2023 04:25:04 -0800
From:   syzbot <syzbot+c5b339d16ffa61fd512d@...kaller.appspotmail.com>
To:     eadavis@...com, linux-kernel@...r.kernel.org,
        syzkaller-bugs@...glegroups.com
Subject: Re: [syzbot] [ntfs3?] WARNING in indx_insert_into_buffer

Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
WARNING in indx_insert_into_buffer

0, e: -12, h1: ffff88801d400018, h1s: ffff88801d402000, u1: 3960, 2600
------------[ cut here ]------------
memcpy: detected field-spanning write (size 3960) of single field "hdr1" at fs/ntfs3/index.c:1917 (size 16)
WARNING: CPU: 1 PID: 5567 at fs/ntfs3/index.c:1917 indx_insert_into_buffer.isra.0+0x10a2/0x1370 fs/ntfs3/index.c:1917
Modules linked in:
CPU: 1 PID: 5567 Comm: syz-executor.0 Not tainted 6.7.0-rc1-syzkaller-00344-g037266a5f723-dirty #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:indx_insert_into_buffer.isra.0+0x10a2/0x1370 fs/ntfs3/index.c:1917
Code: d4 c9 c1 fe c6 05 b6 cb 3d 0c 01 90 48 8b 74 24 78 b9 10 00 00 00 48 c7 c2 80 d0 03 8b 48 c7 c7 e0 d0 03 8b e8 9f e8 87 fe 90 <0f> 0b 90 90 e9 0d fe ff ff 48 c7 44 24 70 00 00 00 00 31 db e9 20
RSP: 0018:ffffc900036cf6e0 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 00000000fffffff4 RCX: ffffffff814ca799
RDX: ffff88801ead1340 RSI: ffffffff814ca7a6 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000005 R12: ffff88802703a000
R13: ffff88801fac1820 R14: ffff88802def8000 R15: ffff88801d400018
FS:  00007fe44fc446c0(0000) GS:ffff88806b700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe44ea20000 CR3: 0000000020a37000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 indx_insert_entry+0x1a5/0x460 fs/ntfs3/index.c:1987
 ni_add_name+0x4d9/0x820 fs/ntfs3/frecord.c:3055
 ni_rename+0xa1/0x1a0 fs/ntfs3/frecord.c:3087
 ntfs_rename+0x91f/0xec0 fs/ntfs3/namei.c:322
 vfs_rename+0x13e0/0x1c30 fs/namei.c:4844
 do_renameat2+0xc3c/0xdc0 fs/namei.c:4996
 __do_sys_rename fs/namei.c:5042 [inline]
 __se_sys_rename fs/namei.c:5040 [inline]
 __x64_sys_rename+0x81/0xa0 fs/namei.c:5040
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fe44ee7cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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:00007fe44fc440c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007fe44ef9bf80 RCX: 00007fe44ee7cae9
RDX: 0000000000000000 RSI: 0000000020000a40 RDI: 0000000020000300
RBP: 00007fe44fc44120 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 000000000000000b R14: 00007fe44ef9bf80 R15: 00007fff185517f8
 </TASK>


Tested on:

commit:         037266a5 Merge tag 'scsi-fixes' of git://git.kernel.or..
git tree:       https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
console output: https://syzkaller.appspot.com/x/log.txt?x=11dade9f680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=af04b7c4d36966d8
dashboard link: https://syzkaller.appspot.com/bug?extid=c5b339d16ffa61fd512d
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
patch:          https://syzkaller.appspot.com/x/patch.diff?x=141879cce80000