syzbot
WARNING in truncate_setsize
Status:
upstream: reported on 2026/09/29 20:16
Subsystems:
ntfs3
Labels:
prio:high
[Documentation on labels]
Reported-by: syzbot+0e70362e1726b5a7502e@syzkaller.appspotmail.com
First crash: 4d03h, last: 4d03h
Sample crash report:
ntfs3(loop0): failed to read volume at offset 0x46c00
ntfs3(loop0): failed to read volume at offset 0x46c00
ntfs3(loop0): failed to read volume at offset 0x46c00
ntfs3(loop0): failed to read volume at offset 0x46c00
ntfs3(loop0): failed to read volume at offset 0x46c00
ntfs3(loop0): failed to read volume at offset 0x46c00
ntfs3(loop0): failed to read volume at offset 0x46c00
ntfs3(loop0): failed to read volume at offset 0x46c00
ntfs3(loop0): failed to read volume at offset 0x46c00
ntfs3(loop0): failed to read volume at offset 0x46c00
------------[ cut here ]------------
ifs_is_fully_uptodate(folio, ifs) != folio_test_uptodate(folio)
WARNING: fs/iomap/buffered-io.c:295 at ifs_free+0x344/0x400 fs/iomap/buffered-io.c:294, CPU#0: syz.0.0/5321
Modules linked in:
CPU: 0 UID: 0 PID: 5321 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:ifs_free+0x344/0x400 fs/iomap/buffered-io.c:294
Code: 41 5f 5d e9 be 47 bc ff e8 e9 9b 56 ff 90 0f 0b 90 e9 d8 fe ff ff e8 db 9b 56 ff 90 0f 0b 90 e9 12 ff ff ff e8 cd 9b 56 ff 90 <0f> 0b 90 eb c7 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 0e fe ff ff
RSP: 0018:ffffc9000e557498 EFLAGS: 00010287
RAX: ffffffff82715143 RBX: 0000000000000008 RCX: 0000000000100000
RDX: ffffc90020802000 RSI: 0000000000000f7c RDI: 0000000000000f7d
RBP: 000000008271cf01 R08: ffffea00004e4607 R09: 1ffffd400009c8c0
R10: dffffc0000000000 R11: fffff9400009c8c1 R12: ffff888036fe1cc4
R13: ffff888036fe1c80 R14: ffffea00004e4600 R15: 0000000000000000
FS: 00007f2c7aed96c0(0000) GS:ffff88808c2bf000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2c7a1d58e0 CR3: 0000000012a58000 CR4: 0000000000352ef0
Call Trace:
<TASK>
folio_invalidate mm/truncate.c:140 [inline]
truncate_cleanup_folio+0xcb/0x190 mm/truncate.c:160
truncate_inode_pages_range+0x2c1/0xd80 mm/truncate.c:404
truncate_inode_pages mm/truncate.c:485 [inline]
truncate_pagecache mm/truncate.c:798 [inline]
truncate_setsize+0xcf/0xf0 mm/truncate.c:823
ntfs_setattr+0x267/0x590 fs/ntfs3/file.c:739
notify_change+0xbba/0xea0 fs/attr.c:556
do_truncate+0x1c2/0x250 fs/open.c:68
handle_truncate fs/namei.c:4300 [inline]
do_open fs/namei.c:4841 [inline]
path_openat+0x15b5/0x1d60 fs/namei.c:5000
do_file_open+0x23e/0x4a0 fs/namei.c:5029
do_sys_openat2+0x115/0x200 fs/open.c:1417
do_sys_open fs/open.c:1423 [inline]
__do_sys_openat fs/open.c:1439 [inline]
__se_sys_openat fs/open.c:1434 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1434
do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2c79f9e159
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:00007f2c7aed8fe8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f2c7a226090 RCX: 00007f2c79f9e159
RDX: 0000000000109342 RSI: 0000200000000040 RDI: ffffffffffffff9c
RBP: 00007f2c7a03506b R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2c7a226128 R14: 00007f2c7a226090 R15: 00007ffe6ba73cd8
</TASK>
* Struck through repros no longer work on HEAD.