[syzbot] [ocfs2?] kernel BUG in ocfs2_truncate_file (2)

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 2e6803928193 Merge tag 'tracefs-v7.1-2' of git://git.kerne..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=152aecce580000
kernel config: https://syzkaller.appspot.com/x/.config?x=893fe4d237c86ed2
dashboard link: https://syzkaller.appspot.com/bug?extid=83b3e2bb16ee8eaf0e68
compiler: Debian clang version 21.1.8 (++20251221033036+2078da43e25a-1~exp1~20251221153213.50), Debian LLD 21.1.8

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/d900f083ada3/non_bootable_disk-2e680392.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/c172e9d12fe6/vmlinux-2e680392.xz
kernel image: https://storage.googleapis.com/syzbot-assets/27e7e7afc115/bzImage-2e680392.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+83b3e2...@syzkaller.appspotmail.com

Buffer I/O error on dev loop0, logical block 19904, async page read
Buffer I/O error on dev loop0, logical block 19905, async page read
Buffer I/O error on dev loop0, logical block 19906, async page read
Buffer I/O error on dev loop0, logical block 19907, async page read
Buffer I/O error on dev loop0, logical block 19908, async page read
Buffer I/O error on dev loop0, logical block 19909, async page read
Buffer I/O error on dev loop0, logical block 19910, async page read
Buffer I/O error on dev loop0, logical block 19911, async page read
(syz.0.0,5344,0):ocfs2_truncate_file:461 ERROR: bug expression: le64_to_cpu(fe->i_size) != i_size_read(inode)
(syz.0.0,5344,0):ocfs2_truncate_file:461 ERROR: Inode 17058, inode i_size = 1048576 != di i_size = 983040, i_flags = 0x2001
------------[ cut here ]------------
kernel BUG at fs/ocfs2/file.c:461!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5344 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:ocfs2_truncate_file+0x1313/0x14e0 fs/ocfs2/file.c:455
Code: d8 12 8c 49 89 d8 4d 89 f9 50 41 54 e8 c6 cb 17 00 48 83 c4 10 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 20 c6 44 01 18 f8 90 <0f> 0b 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 5c f8 ff ff 48 89 df e8
RSP: 0018:ffffc9000df872e0 EFLAGS: 00010282
RAX: dffffc0000000000 RBX: 00000000000042a2 RCX: 1ffff92001bf0e6c
RDX: ffffc90020011000 RSI: 0000000000018631 RDI: 0000000000018632
RBP: ffffc9000df87510 R08: ffff88801fc247d3 R09: 1ffff11003f848fa
R10: dffffc0000000000 R11: ffffed1003f848fb R12: 00000000000f0000
R13: ffff8880004c842c R14: ffffc9000df87420 R15: 0000000000100000
FS: 00007fc100fc96c0(0000) GS:ffff88808c809000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc10040d6b8 CR3: 0000000041e52000 CR4: 0000000000352ef0
Call Trace:
<TASK>
ocfs2_setattr+0x15e5/0x1ca0 fs/ocfs2/file.c:1219
notify_change+0xc1a/0xf40 fs/attr.c:556
do_truncate+0x1c2/0x250 fs/open.c:68
handle_truncate fs/namei.c:4307 [inline]
do_open fs/namei.c:4703 [inline]
path_openat+0x2f89/0x3860 fs/namei.c:4858
do_file_open+0x23e/0x4a0 fs/namei.c:4887
do_sys_openat2+0x113/0x200 fs/open.c:1364
do_sys_open fs/open.c:1370 [inline]
__do_sys_open fs/open.c:1378 [inline]
__se_sys_open fs/open.c:1374 [inline]
__x64_sys_open+0x11e/0x150 fs/open.c:1374
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc10019c819
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc100fc8fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fc100416090 RCX: 00007fc10019c819
RDX: 0000000000000111 RSI: 000000000014937e RDI: 0000200000000180
RBP: 00007fc100232c91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fc100416128 R14: 00007fc100416090 R15: 00007fff135c7a78
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_truncate_file+0x1313/0x14e0 fs/ocfs2/file.c:455
Code: d8 12 8c 49 89 d8 4d 89 f9 50 41 54 e8 c6 cb 17 00 48 83 c4 10 48 b8 00 00 00 00 00 fc ff df 48 8b 4c 24 20 c6 44 01 18 f8 90 <0f> 0b 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 5c f8 ff ff 48 89 df e8
RSP: 0018:ffffc9000df872e0 EFLAGS: 00010282
RAX: dffffc0000000000 RBX: 00000000000042a2 RCX: 1ffff92001bf0e6c
RDX: ffffc90020011000 RSI: 0000000000018631 RDI: 0000000000018632
RBP: ffffc9000df87510 R08: ffff88801fc247d3 R09: 1ffff11003f848fa
R10: dffffc0000000000 R11: ffffed1003f848fb R12: 00000000000f0000
R13: ffff8880004c842c R14: ffffc9000df87420 R15: 0000000000100000
FS: 00007fc100fc96c0(0000) GS:ffff88808c809000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f11c872aa30 CR3: 0000000041e52000 CR4: 0000000000352ef0


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