Message-ID: <00000000000036e1290603e097e0@google.com>
Date:   Sat, 26 Aug 2023 22:10:04 -0700
From:   syzbot <syzbot+d13490c82ad5353c779d@...kaller.appspotmail.com>
To:     clm@...com, dsterba@...e.com, josef@...icpanda.com,
        linux-btrfs@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com
Subject: [syzbot] [btrfs?] kernel BUG in btrfs_insert_delayed_dir_index

Hello,

syzbot found the following issue on:

HEAD commit:    a5e505a99ca7 Merge tag 'platform-drivers-x86-v6.5-5' of gi..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=15c71340680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=1b32f62c755c3a9c
dashboard link: https://syzkaller.appspot.com/bug?extid=d13490c82ad5353c779d
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/c871771378a8/disk-a5e505a9.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/754522af4822/vmlinux-a5e505a9.xz
kernel image: https://storage.googleapis.com/syzbot-assets/5bf8075fe538/bzImage-a5e505a9.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d13490c82ad5353c779d@...kaller.appspotmail.com

BTRFS error (device loop4): err add delayed dir index item(name: binderfs2) into the insertion tree of the delayed node(root id: 5, inode id: 257, errno: -17)
------------[ cut here ]------------
kernel BUG at fs/btrfs/delayed-inode.c:1504!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 7505 Comm: syz-executor.4 Not tainted 6.5.0-rc7-syzkaller-00022-ga5e505a99ca7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023
RIP: 0010:btrfs_insert_delayed_dir_index+0xc70/0xca0 fs/btrfs/delayed-inode.c:1504
Code: 43 fe 48 8b 04 24 4c 8b 08 4c 89 f7 48 c7 c6 e0 90 4b 8b 48 8b 54 24 60 48 8b 4c 24 58 49 89 e8 53 e8 d4 c9 19 07 48 83 c4 08 <0f> 0b e8 89 45 ea fd 48 c7 c7 40 90 4b 8b 48 c7 c6 a0 90 4b 8b 48
RSP: 0018:ffffc90015a87678 EFLAGS: 00010286
RAX: 296378981ff91c00 RBX: 00000000ffffffef RCX: 1ffff92002b50ea4
RDX: ffffc90006231000 RSI: 000000000001ca7c RDI: 000000000001ca7d
RBP: 0000000000000005 R08: ffffffff816f0d3c R09: 1ffff92002b50e4c
R10: dffffc0000000000 R11: fffff52002b50e4d R12: ffff88802370a1f0
R13: 1ffff1100ea2b4a9 R14: ffff888078e7c000 R15: ffff88807c4e81f7
FS:  00007f10efdfe6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe0f73af68 CR3: 000000007cb5e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 btrfs_insert_dir_item+0x47d/0x630 fs/btrfs/dir-item.c:166
 btrfs_add_link+0x287/0xc60 fs/btrfs/inode.c:6581
 btrfs_create_new_inode+0x1b27/0x2760 fs/btrfs/inode.c:6522
 btrfs_create_common+0x1f9/0x300 fs/btrfs/inode.c:6657
 vfs_mkdir+0x29d/0x450 fs/namei.c:4117
 do_mkdirat+0x264/0x520 fs/namei.c:4140
 __do_sys_mkdirat fs/namei.c:4155 [inline]
 __se_sys_mkdirat fs/namei.c:4153 [inline]
 __x64_sys_mkdirat+0x89/0xa0 fs/namei.c:4153
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f10f127cae9
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:00007f10efdfe0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f10f139bf80 RCX: 00007f10f127cae9
RDX: 00000000000001ff RSI: 0000000020000140 RDI: ffffffffffffff9c
RBP: 00007f10f12c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f10f139bf80 R15: 00007ffdc0af52a8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:btrfs_insert_delayed_dir_index+0xc70/0xca0 fs/btrfs/delayed-inode.c:1504
Code: 43 fe 48 8b 04 24 4c 8b 08 4c 89 f7 48 c7 c6 e0 90 4b 8b 48 8b 54 24 60 48 8b 4c 24 58 49 89 e8 53 e8 d4 c9 19 07 48 83 c4 08 <0f> 0b e8 89 45 ea fd 48 c7 c7 40 90 4b 8b 48 c7 c6 a0 90 4b 8b 48
RSP: 0018:ffffc90015a87678 EFLAGS: 00010286
RAX: 296378981ff91c00 RBX: 00000000ffffffef RCX: 1ffff92002b50ea4
RDX: ffffc90006231000 RSI: 000000000001ca7c RDI: 000000000001ca7d
RBP: 0000000000000005 R08: ffffffff816f0d3c R09: 1ffff92002b50e4c
R10: dffffc0000000000 R11: fffff52002b50e4d R12: ffff88802370a1f0
R13: 1ffff1100ea2b4a9 R14: ffff888078e7c000 R15: ffff88807c4e81f7
FS:  00007f10efdfe6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055966fc90008 CR3: 000000007cb5e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


---
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