linux-kernel - [syzbot] kernel BUG in ext4_ind_remove

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Message-ID: <000000000000183d9e05d7f0c0ee@google.com>
Date:   Sun, 13 Feb 2022 17:58:18 -0800
From:   syzbot <syzbot+fcc629d1a1ae8d3fe8a5@...kaller.appspotmail.com>
To:     adilger.kernel@...ger.ca, linux-ext4@...r.kernel.org,
        linux-kernel@...r.kernel.org, syzkaller-bugs@...glegroups.com,
        tytso@....edu
Subject: [syzbot] kernel BUG in ext4_ind_remove_space

Hello,

syzbot found the following issue on:

HEAD commit:    ef6b35306dd8 Add linux-next specific files for 20220204
git tree:       linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=1602d71c700000
kernel config:  https://syzkaller.appspot.com/x/.config?x=e0431e0b00810b4f
dashboard link: https://syzkaller.appspot.com/bug?extid=fcc629d1a1ae8d3fe8a5
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=11d31674700000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+fcc629d1a1ae8d3fe8a5@...kaller.appspotmail.com

EXT4-fs warning (device sda1): ext4_block_to_path:105: block 1074791436 > max in inode 1187
------------[ cut here ]------------
kernel BUG at fs/ext4/indirect.c:1244!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 3853 Comm: syz-executor.0 Not tainted 5.17.0-rc2-next-20220204-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:ext4_ind_remove_space+0xfde/0x1400 fs/ext4/indirect.c:1244
Code: 00 0f 85 36 03 00 00 48 8b 0b 4c 89 fe 44 8b 4c 24 20 48 8b 7c 24 10 48 83 c1 04 e8 6c bb ff ff e9 02 f6 ff ff e8 12 c3 5f ff <0f> 0b 4c 8b 7c 24 50 e9 8e f9 ff ff e8 01 c3 5f ff 48 8b 7c 24 10
RSP: 0018:ffffc90003647ab8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff88807acdba80 RSI: ffffffff8218e5de RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: ffffffff8218d85a R11: 0000000000000000 R12: 0000000000001000
R13: ffffc90003647b68 R14: ffffc90003647b88 R15: ffff88806ccc2a80
FS:  00007f2b2de3d700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2961b6f090 CR3: 000000006d02e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_punch_hole+0xf3e/0x1110 fs/ext4/inode.c:4044
 ext4_fallocate+0x1194/0x3ed0 fs/ext4/extents.c:4694
 vfs_fallocate+0x48d/0xe10 fs/open.c:310
 ksys_fallocate fs/open.c:333 [inline]
 __do_sys_fallocate fs/open.c:341 [inline]
 __se_sys_fallocate fs/open.c:339 [inline]
 __x64_sys_fallocate+0xcf/0x140 fs/open.c:339
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f2b2e6c8059
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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:00007f2b2de3d168 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 00007f2b2e7daf60 RCX: 00007f2b2e6c8059
RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000005
RBP: 00007f2b2e72208d R08: 0000000000000000 R09: 0000000000000000
R10: 00000ffeffeff000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcd330bbaf R14: 00007f2b2de3d300 R15: 0000000000022000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_ind_remove_space+0xfde/0x1400 fs/ext4/indirect.c:1244
Code: 00 0f 85 36 03 00 00 48 8b 0b 4c 89 fe 44 8b 4c 24 20 48 8b 7c 24 10 48 83 c1 04 e8 6c bb ff ff e9 02 f6 ff ff e8 12 c3 5f ff <0f> 0b 4c 8b 7c 24 50 e9 8e f9 ff ff e8 01 c3 5f ff 48 8b 7c 24 10
RSP: 0018:ffffc90003647ab8 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff88807acdba80 RSI: ffffffff8218e5de RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: ffffffff8218d85a R11: 0000000000000000 R12: 0000000000001000
R13: ffffc90003647b68 R14: ffffc90003647b88 R15: ffff88806ccc2a80
FS:  00007f2b2de3d700(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020200000 CR3: 000000006d02e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400


---
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