syzbot


WARNING in ntfs_put_super

Status: upstream: reported C repro on 2025/10/29 00:12
Subsystems: ntfs3
[Documentation on labels]
Reported-by: syzbot+cc433e4cd6d54736bf80@syzkaller.appspotmail.com
First crash: 13d, last: now
Cause bisection: introduced by (bisect log) :
commit 02f312754c873efe076888a2fdca982e56617929
Author: YangWen <anmuxixixi@gmail.com>
Date: Wed Sep 10 15:17:08 2025 +0000

  ntfs3: fix use-after-free of sbi->options in cmp_fnames

Crash: WARNING in ntfs_put_super (log)
Repro: C syz .config
  
Duplicate bugs (1)
duplicates (1):
Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
WARNING in ntfs_fill_super (2) ntfs3 -1 C done 598 7h47m 12d 0/29 closed as dup on 2025/11/03 13:28
Discussions (3)
Title Replies (including bot) Last reply
[PATCH] [PATCH] ntfs3: fix double free of sbi->options->nls and clarify ownership of fc->fs_private 1 (1) 2025/10/30 16:20
[syzbot] [ntfs3?] WARNING in ntfs_put_super 0 (2) 2025/10/29 15:25
[PATCH next] ntfs3: Remove redundant nls free 1 (1) 2025/10/29 06:03

Sample crash report:
------------[ cut here ]------------
WARNING: mm/slub.c:6760 at free_large_kmalloc+0x15c/0x1f0 mm/slub.c:6760, CPU#1: syz-executor/5932
Modules linked in:
CPU: 1 UID: 0 PID: 5932 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:free_large_kmalloc+0x15c/0x1f0 mm/slub.c:6760
Code: 44 89 f6 e8 06 d1 fc ff 65 48 8b 05 8e d0 58 10 48 3b 44 24 08 75 57 48 83 c4 10 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc cc 90 <0f> 0b 90 65 48 8b 05 69 d0 58 10 48 3b 44 24 08 75 32 48 89 df 48
RSP: 0018:ffffc90003b7fc48 EFLAGS: 00010206
RAX: 00000000ff000000 RBX: ffffea0000389040 RCX: ffffea0000389048
RDX: 0000000000000000 RSI: ffffffff8e241d40 RDI: ffffea0000389040
RBP: 1ffff1100f31c943 R08: ffffffff8f7da977 R09: 1ffffffff1efb52e
R10: dffffc0000000000 R11: fffffbfff1efb52f R12: 1ffff1100f31c936
R13: dffffc0000000000 R14: ffff8880798e49b0 R15: ffff88802f0976c8
FS:  000055557bdf2500(0000) GS:ffff888125fc2000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffca4f6ffd8 CR3: 0000000079d34000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 ntfs_put_super+0x15b/0x1b0 fs/ntfs3/super.c:709
 generic_shutdown_super+0x135/0x2c0 fs/super.c:643
 kill_block_super+0x44/0x90 fs/super.c:1723
 ntfs3_kill_sb+0x44/0x1b0 fs/ntfs3/super.c:1848
 deactivate_locked_super+0xbc/0x130 fs/super.c:474
 cleanup_mnt+0x425/0x4c0 fs/namespace.c:1317
 task_work_run+0x1d4/0x260 kernel/task_work.c:233
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 __exit_to_user_mode_loop kernel/entry/common.c:44 [inline]
 exit_to_user_mode_loop+0xff/0x4f0 kernel/entry/common.c:75
 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
 syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:159 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:194 [inline]
 do_syscall_64+0x2e9/0xfa0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2de39909f7
Code: a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 b8
RSP: 002b:00007ffca4f70788 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 00007f2de3a11d7d RCX: 00007f2de39909f7
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffca4f70840
RBP: 00007ffca4f70840 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffca4f718d0
R13: 00007f2de3a11d7d R14: 000000000001ab36 R15: 00007ffca4f71910
 </TASK>

Crashes (31954):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/11/07 22:44 linux-next 9c0826a5d9aa 4e1406b4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/07 21:49 linux-next 9c0826a5d9aa 4e1406b4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/06 04:13 linux-next 84d39fb9d529 a6c9c731 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/02 08:32 linux-next 98bd8b16ae57 2c50b6a9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/01 03:59 linux-next 98bd8b16ae57 2c50b6a9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/01 03:16 linux-next 98bd8b16ae57 2c50b6a9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/01 02:32 linux-next 98bd8b16ae57 2c50b6a9 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/10/29 02:22 linux-next f7d2388eeec2 fd2207e7 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/10/29 01:15 linux-next f7d2388eeec2 fd2207e7 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/10/28 23:48 linux-next f7d2388eeec2 fd2207e7 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/10/28 22:21 linux-next f7d2388eeec2 fd2207e7 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 11:09 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 11:02 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 10:48 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 10:38 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 10:30 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 10:24 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 10:14 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 10:05 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 09:56 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 09:47 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 09:40 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 09:34 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 09:25 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 09:18 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 09:10 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 09:02 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 08:52 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 08:46 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 08:40 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 08:28 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 08:21 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 08:15 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 08:07 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 08:01 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 07:54 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 07:48 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 07:42 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 07:36 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 07:28 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 07:22 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 07:16 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 07:09 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 07:03 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 06:54 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 06:49 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 06:43 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 06:37 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 06:31 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 06:24 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 06:18 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 06:13 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
2025/11/10 06:06 linux-next ab40c92c74c6 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-linux-next-kasan-gce-root WARNING in ntfs_put_super
* Struck through repros no longer work on HEAD.