From: syzbot <syzbot+f4582777a19ec422b517@syzkaller.appspotmail.com>
To: adilger.kernel@dilger.ca, linux-ext4@vger.kernel.org,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
syzkaller-bugs@googlegroups.com, tytso@mit.edu
Subject: Re: [syzbot] [ext4?] kernel BUG in ext4_write_inline_data
Date: Mon, 22 May 2023 13:07:51 -0700 [thread overview]
Message-ID: <00000000000056edfa05fc4dd3ba@google.com> (raw)
In-Reply-To: <000000000000dfd6a105f71001d7@google.com>
syzbot has found a reproducer for the following issue on:
HEAD commit: 44c026a73be8 Linux 6.4-rc3
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1028b7a1280000
kernel config: https://syzkaller.appspot.com/x/.config?x=f389ffdf4e9ba3f0
dashboard link: https://syzkaller.appspot.com/bug?extid=f4582777a19ec422b517
compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=162a1a8e280000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12eb0691280000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8c94fba58ffe/disk-44c026a7.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/fc04d8a50461/vmlinux-44c026a7.xz
kernel image: https://storage.googleapis.com/syzbot-assets/4d861756bf1a/bzImage-44c026a7.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/f43e36084b2b/mount_0.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+f4582777a19ec422b517@syzkaller.appspotmail.com
------------[ cut here ]------------
kernel BUG at fs/ext4/inline.c:235!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 5070 Comm: syz-executor189 Not tainted 6.4.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
RIP: 0010:ext4_write_inline_data+0x344/0x3e0 fs/ext4/inline.c:235
Code: 5f e9 80 76 59 ff e8 7b 76 59 ff 45 8d 64 2c c4 41 bd 3c 00 00 00 41 29 ed e9 e8 fe ff ff e8 63 76 59 ff 0f 0b e8 5c 76 59 ff <0f> 0b e8 25 40 ac ff e9 fe fd ff ff 4c 89 ff e8 18 40 ac ff e9 99
RSP: 0018:ffffc90003e7f950 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88807497c8b0 RCX: 0000000000000000
RDX: ffff888020bb1dc0 RSI: ffffffff822acc74 RDI: 0000000000000006
RBP: 0000000000000054 R08: 0000000000000006 R09: 0000000000000060
R10: 0000000000000054 R11: 0000000000000000 R12: 000000000000000c
R13: 0000000000000060 R14: ffffc90003e7f9e8 R15: ffff88807497ce6a
FS: 00007f4e59eb8700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f4e59e71000 CR3: 000000002bdc2000 CR4: 0000000000350ee0
Call Trace:
<TASK>
ext4_write_inline_data_end+0x2b3/0xd20 fs/ext4/inline.c:775
ext4_da_write_end+0x3d0/0xad0 fs/ext4/inode.c:2985
generic_perform_write+0x316/0x570 mm/filemap.c:3934
ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:289
ext4_file_write_iter+0xbe0/0x1740 fs/ext4/file.c:710
call_write_iter include/linux/fs.h:1868 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x945/0xd50 fs/read_write.c:584
ksys_write+0x12b/0x250 fs/read_write.c:637
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f4e62256399
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4e59eb82f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000000003a RCX: 00007f4e62256399
RDX: 000000000000000c RSI: 00000000200002c0 RDI: 0000000000000004
RBP: 00007f4e622d37a8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f4e622d37a0
R13: 00007f4e622a08f8 R14: 0000000020001200 R15: 0030656c69662f2e
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_write_inline_data+0x344/0x3e0 fs/ext4/inline.c:235
Code: 5f e9 80 76 59 ff e8 7b 76 59 ff 45 8d 64 2c c4 41 bd 3c 00 00 00 41 29 ed e9 e8 fe ff ff e8 63 76 59 ff 0f 0b e8 5c 76 59 ff <0f> 0b e8 25 40 ac ff e9 fe fd ff ff 4c 89 ff e8 18 40 ac ff e9 99
RSP: 0018:ffffc90003e7f950 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff88807497c8b0 RCX: 0000000000000000
RDX: ffff888020bb1dc0 RSI: ffffffff822acc74 RDI: 0000000000000006
RBP: 0000000000000054 R08: 0000000000000006 R09: 0000000000000060
R10: 0000000000000054 R11: 0000000000000000 R12: 000000000000000c
R13: 0000000000000060 R14: ffffc90003e7f9e8 R15: ffff88807497ce6a
FS: 00007f4e59eb8700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555a6837b238 CR3: 000000002bdc2000 CR4: 0000000000350ee0
---
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
next prev parent reply other threads:[~2023-05-22 20:07 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-17 3:16 [syzbot] [ext4?] kernel BUG in ext4_write_inline_data syzbot
2023-05-22 20:07 ` syzbot [this message]
2023-09-06 8:46 ` [syzbot] " syzbot
2023-09-20 8:47 ` syzbot
2023-10-04 8:47 ` syzbot
2023-10-18 8:48 ` syzbot
2023-11-01 8:49 ` syzbot
2023-11-15 8:50 ` syzbot
2023-11-29 8:51 ` syzbot
2023-12-13 8:52 ` syzbot
2023-12-13 11:12 ` [syzbot] [syzbot] [ext4?] " syzbot
2023-12-15 3:26 ` syzbot
2023-12-29 3:40 ` [syzbot] " syzbot
2024-01-12 3:40 ` syzbot
2024-01-26 3:41 ` syzbot
2024-02-09 3:41 ` syzbot
2024-02-23 3:42 ` syzbot
2024-03-08 3:42 ` syzbot
2024-03-22 3:43 ` syzbot
2024-04-05 3:43 ` syzbot
2024-04-19 3:44 ` syzbot
2024-05-03 3:44 ` syzbot
[not found] <tencent_2D190DCF9D0DA225C98D87922ADDA1DD8607@qq.com>
2023-12-13 11:56 ` [syzbot] [ext4?] " syzbot
[not found] <tencent_B483AC64585766776E66C9B36FA36A496905@qq.com>
2023-12-15 3:40 ` syzbot
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=00000000000056edfa05fc4dd3ba@google.com \
--to=syzbot+f4582777a19ec422b517@syzkaller.appspotmail.com \
--cc=adilger.kernel@dilger.ca \
--cc=linux-ext4@vger.kernel.org \
--cc=linux-fsdevel@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=syzkaller-bugs@googlegroups.com \
--cc=tytso@mit.edu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.