syzbot


kernel BUG in ocfs2_truncate_file

Status: upstream: reported on 2024/09/22 23:08
Subsystems: ocfs2
[Documentation on labels]
Reported-by: syzbot+b93b65ee321c97861072@syzkaller.appspotmail.com
First crash: 63d, last: 11d
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [ocfs2?] kernel BUG in ocfs2_truncate_file 0 (1) 2024/09/22 23:08

Sample crash report:
loop0: detected capacity change from 0 to 32768
=======================================================
WARNING: The mand mount option has been deprecated and
         and is ignored by this kernel. Remove the mand
         option from the mount to silence this warning.
=======================================================
ocfs2: Mounting device (7,0) on (node local, slot 0) with ordered data mode.
syz.0.0: attempt to access beyond end of device
loop0: rw=34817, sector=10576, nr_sectors = 578 limit=0
(syz.0.0,5323,0):ocfs2_dio_end_io:2424 ERROR: Direct IO failed, bytes = -5
syz.0.0: attempt to access beyond end of device
loop0: rw=2049, sector=11344, nr_sectors = 128 limit=0
loop0: detected capacity change from 0 to 32767
OCFS2: ERROR (device loop0): int ocfs2_validate_inode_block(struct super_block *, struct buffer_head *): Invalid dinode #17061: signature = 
On-disk corruption discovered. Please run fsck.ocfs2 once the filesystem is unmounted.
OCFS2: File system is now read-only.
(syz.0.0,5323,0):ocfs2_assign_bh:2416 ERROR: status = -30
(syz.0.0,5323,0):ocfs2_inode_lock_full_nested:2511 ERROR: status = -30
(syz.0.0,5323,0):ocfs2_inode_lock_tracker:2695 ERROR: status = -30
(syz.0.0,5323,0):ocfs2_xattr_get:1335 ERROR: status = -30
(syz.0.0,5323,0):ocfs2_truncate_file:460 ERROR: bug expression: le64_to_cpu(fe->i_size) != i_size_read(inode)
(syz.0.0,5323,0):ocfs2_truncate_file:460 ERROR: Inode 17061, inode i_size = 65191 != di i_size = 0, i_flags = 0x0
------------[ cut here ]------------
kernel BUG at fs/ocfs2/file.c:460!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted 6.12.0-rc6-syzkaller-00272-gda4373fbcf00 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:ocfs2_truncate_file+0x1381/0x1560 fs/ocfs2/file.c:454
Code: 40 01 00 00 48 c7 c6 27 c9 12 8e ba cc 01 00 00 48 c7 c1 60 6e 49 8c 4d 89 e8 4d 89 f9 50 41 56 e8 74 35 18 00 48 83 c4 10 90 <0f> 0b e8 78 b0 3b 08 f3 0f 1e fa 65 44 8b 3d 88 21 78 7c bf 07 00
RSP: 0018:ffffc9000d37f280 EFLAGS: 00010282
RAX: 83443fb4ee86dd00 RBX: ffff888050c9fa2c RCX: 83443fb4ee86dd00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc9000d37f4b0 R08: ffffffff8174a18c R09: 1ffff92001a6fdbc
R10: dffffc0000000000 R11: fffff52001a6fdbd R12: 1ffff1100a193f44
R13: 00000000000042a5 R14: 0000000000000000 R15: 000000000000fea7
FS:  00007f637250e6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001000 CR3: 0000000043b88000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ocfs2_setattr+0x1890/0x1f00 fs/ocfs2/file.c:1212
 notify_change+0xbca/0xe90 fs/attr.c:503
 do_truncate+0x220/0x310 fs/open.c:65
 handle_truncate fs/namei.c:3395 [inline]
 do_open fs/namei.c:3778 [inline]
 path_openat+0x2e1e/0x3590 fs/namei.c:3933
 do_filp_open+0x235/0x490 fs/namei.c:3960
 do_sys_openat2+0x13e/0x1d0 fs/open.c:1415
 do_sys_open fs/open.c:1430 [inline]
 __do_sys_openat fs/open.c:1446 [inline]
 __se_sys_openat fs/open.c:1441 [inline]
 __x64_sys_openat+0x247/0x2a0 fs/open.c:1441
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f637177e719
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f637250e038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f6371935f80 RCX: 00007f637177e719
RDX: 000000000000275a RSI: 00000000200010c0 RDI: ffffffffffffff9c
RBP: 00007f63717f139e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f6371935f80 R15: 00007ffefc82e328
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ocfs2_truncate_file+0x1381/0x1560 fs/ocfs2/file.c:454
Code: 40 01 00 00 48 c7 c6 27 c9 12 8e ba cc 01 00 00 48 c7 c1 60 6e 49 8c 4d 89 e8 4d 89 f9 50 41 56 e8 74 35 18 00 48 83 c4 10 90 <0f> 0b e8 78 b0 3b 08 f3 0f 1e fa 65 44 8b 3d 88 21 78 7c bf 07 00
RSP: 0018:ffffc9000d37f280 EFLAGS: 00010282
RAX: 83443fb4ee86dd00 RBX: ffff888050c9fa2c RCX: 83443fb4ee86dd00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: ffffc9000d37f4b0 R08: ffffffff8174a18c R09: 1ffff92001a6fdbc
R10: dffffc0000000000 R11: fffff52001a6fdbd R12: 1ffff1100a193f44
R13: 00000000000042a5 R14: 0000000000000000 R15: 000000000000fea7
FS:  00007f637250e6c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001000 CR3: 0000000043b88000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400

Crashes (7):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/11/09 23:29 upstream da4373fbcf00 6b856513 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_truncate_file
2024/10/26 07:37 upstream c71f8fb4dc91 65e8686b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_truncate_file
2024/10/10 14:54 upstream d3d1556696c1 d44647df .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_truncate_file
2024/10/07 21:41 upstream 8cf0b93919e1 d7906eff .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_truncate_file
2024/09/23 08:06 upstream af9c191ac2a0 6f888b75 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_truncate_file
2024/09/22 00:43 upstream 1ec6d097897a 6f888b75 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_truncate_file
2024/09/18 23:03 upstream 4a39ac5b7d62 c673ca06 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root kernel BUG in ocfs2_truncate_file
* Struck through repros no longer work on HEAD.