[v5.15] kernel BUG in ntfs_truncate

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 7e89efd3ae1c Linux 5.15.164
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=136a4913980000
kernel config: https://syzkaller.appspot.com/x/.config?x=8e7768447c833306
dashboard link: https://syzkaller.appspot.com/bug?extid=8400deac1264d4ea0e0e
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64

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

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/3d929e236949/disk-7e89efd3.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/8a76a46947c4/vmlinux-7e89efd3.xz
kernel image: https://storage.googleapis.com/syzbot-assets/12f4fa036ad7/Image-7e89efd3.gz.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+8400de...@syzkaller.appspotmail.com

loop3: detected capacity change from 0 to 4096
ntfs: volume version 3.1.
------------[ cut here ]------------
kernel BUG at fs/ntfs/inode.c:2536!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 6610 Comm: syz.3.577 Not tainted 5.15.164-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : ntfs_truncate+0x2034/0x224c fs/ntfs/inode.c:2536
lr : ntfs_truncate+0x2034/0x224c fs/ntfs/inode.c:2536
sp : ffff80001d2573d0
x29: ffff80001d2574b0 x28: dfff800000000000 x27: ffff0000ee09a990
x26: 0000000000000000 x25: ffff0000ee09a9d0 x24: 000000000000000a
x23: 0000000000000000 x22: ffff0000db516838 x21: ffff0000e0036160
x20: ffff0000ee09a9b8 x19: ffff0000ee09a940 x18: 0000000000000000
x17: 0000000000000002 x16: ffff8000095562f0 x15: 00000000ffffffde
x14: ffff0000d36a3680 x13: 0000000000ff0100 x12: 0000000000040000
x11: 000000000000903a x10: ffff80001e91d000 x9 : 000000000000903b
x8 : ffff800009557e5c x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000000 x3 : ffff80000804605c
x2 : 0000000000000000 x1 : 00000000ffffffe4 x0 : ffff0000d2105c00
Call trace:
ntfs_truncate+0x2034/0x224c fs/ntfs/inode.c:2536
ntfs_truncate_vfs fs/ntfs/inode.c:2862 [inline]
ntfs_setattr+0x260/0x320 fs/ntfs/inode.c:2914
notify_change+0xa34/0xcf8 fs/attr.c:505
do_truncate+0x1c0/0x28c fs/open.c:65
handle_truncate fs/namei.c:3265 [inline]
do_open fs/namei.c:3612 [inline]
path_openat+0x20c4/0x26cc fs/namei.c:3742
do_filp_open+0x1a8/0x3b4 fs/namei.c:3769
do_sys_openat2+0x128/0x3e0 fs/open.c:1253
do_sys_open fs/open.c:1269 [inline]
__do_sys_openat fs/open.c:1285 [inline]
__se_sys_openat fs/open.c:1280 [inline]
__arm64_sys_openat+0x1f0/0x240 fs/open.c:1280
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: 17fffe5e 97bdae1f d4210000 97bdae1d (d4210000)
---[ end trace 9826a8f32c73fae4 ]---


---
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[syzbot]

syzbot has found a reproducer for the following issue on:

HEAD commit: 7e89efd3ae1c Linux 5.15.164
git tree: linux-5.15.y

console output: https://syzkaller.appspot.com/x/log.txt?x=11bd25d3980000

kernel config: https://syzkaller.appspot.com/x/.config?x=8e7768447c833306
dashboard link: https://syzkaller.appspot.com/bug?extid=8400deac1264d4ea0e0e
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64

syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10f872f3980000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15d178ed980000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/3d929e236949/disk-7e89efd3.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/8a76a46947c4/vmlinux-7e89efd3.xz
kernel image: https://storage.googleapis.com/syzbot-assets/12f4fa036ad7/Image-7e89efd3.gz.xz

mounted in repro: https://storage.googleapis.com/syzbot-assets/8f953551fb48/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+8400de...@syzkaller.appspotmail.com

loop0: detected capacity change from 0 to 4096

ntfs: volume version 3.1.
------------[ cut here ]------------
kernel BUG at fs/ntfs/inode.c:2536!
Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
Modules linked in:

CPU: 1 PID: 4019 Comm: syz-executor942 Not tainted 5.15.164-syzkaller #0

Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : ntfs_truncate+0x2034/0x224c fs/ntfs/inode.c:2536
lr : ntfs_truncate+0x2034/0x224c fs/ntfs/inode.c:2536

sp : ffff80001cb373d0
x29: ffff80001cb374b0 x28: dfff800000000000 x27: ffff0000de3af3d0
x26: 0000000000000000 x25: ffff0000de3af410 x24: 000000000000000a
x23: 0000000000000000 x22: ffff0000cab6a038 x21: ffff0001789f4160
x20: ffff0000de3af3f8 x19: ffff0000de3af380 x18: 0000000000000000
x17: 0000000000000000 x16: ffff8000095562f0 x15: 00000000ffffffde
x14: ffff0000c9220000 x13: 0000000000ff0100 x12: ffffffffffffffff
x11: 0000000000000000 x10: 0000000000000000 x9 : ffff0000c9220000

x8 : ffff800009557e5c x7 : 0000000000000000 x6 : 0000000000000000

x5 : 0000000000000020 x4 : 0000000000000000 x3 : ffff80000804605c
x2 : 0000000000000000 x1 : 00000000ffffffe4 x0 : ffff0000c9ffbe00

Call trace:
ntfs_truncate+0x2034/0x224c fs/ntfs/inode.c:2536
ntfs_truncate_vfs fs/ntfs/inode.c:2862 [inline]
ntfs_setattr+0x260/0x320 fs/ntfs/inode.c:2914
notify_change+0xa34/0xcf8 fs/attr.c:505
do_truncate+0x1c0/0x28c fs/open.c:65
handle_truncate fs/namei.c:3265 [inline]
do_open fs/namei.c:3612 [inline]
path_openat+0x20c4/0x26cc fs/namei.c:3742
do_filp_open+0x1a8/0x3b4 fs/namei.c:3769
do_sys_openat2+0x128/0x3e0 fs/open.c:1253
do_sys_open fs/open.c:1269 [inline]
__do_sys_openat fs/open.c:1285 [inline]
__se_sys_openat fs/open.c:1280 [inline]
__arm64_sys_openat+0x1f0/0x240 fs/open.c:1280
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: 17fffe5e 97bdae1f d4210000 97bdae1d (d4210000)

---[ end trace 660b74b040783290 ]---


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