[moderation] [usb?] general protection fault in mon_text_release

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 1791c390149f Merge tag 'char-misc-7.0-rc7' of git://git.ke..
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=12f30bd6580000
kernel config: https://syzkaller.appspot.com/x/.config?x=64e78d99d9bf8b4c
dashboard link: https://syzkaller.appspot.com/bug?extid=e1e97a4ad1cbac79361e
compiler: gcc (Debian 14.2.0-19) 14.2.0, GNU ld (GNU Binutils for Debian) 2.44
CC: [gre...@linuxfoundation.org linux-...@vger.kernel.org linu...@vger.kernel.org]

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

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/8f188bab312b/disk-1791c390.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/1c84a1fd4faa/vmlinux-1791c390.xz
kernel image: https://storage.googleapis.com/syzbot-assets/8639bf02df02/bzImage-1791c390.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+e1e97a...@syzkaller.appspotmail.com

Oops: general protection fault, probably for non-canonical address 0x4bffff88807aaa1f: 0000 [#1] SMP KASAN PTI
CPU: 0 UID: 8 PID: 12024 Comm: syz.6.1339 Tainted: G U L syzkaller #0 PREEMPT(full)
Tainted: [U]=USER, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
RIP: 0010:qlist_move_cache+0x64/0xe0 mm/kasan/quarantine.c:302
Code: 26 49 83 3e 00 0f 84 8d 00 00 00 49 8b 46 08 4c 89 28 4d 89 6e 08 49 c7 45 00 00 00 00 00 49 01 56 10 4d 85 ff 74 62 4d 89 fd <4d> 8b 3f 4c 89 ef e8 c1 92 45 ff 48 c1 e8 0c 48 c1 e0 06 48 03 05
RSP: 0018:ffffc90003447948 EFLAGS: 00010002
RAX: ffff888023738000 RBX: ffffc90003447980 RCX: ffff88801ce9063f
RDX: 0000000000000100 RSI: ffffffff81b986d8 RDI: ffff888029869e80
RBP: ffff8880863d0280 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 4bffff88807aaa1f R14: ffffffff9b1fdfc0 R15: 4bffff88807aaa1f
FS: 0000000000000000(0000) GS:ffff888124340000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f74161e9f00 CR3: 0000000148d5c000 CR4: 00000000003526f0
Call Trace:
<TASK>
kasan_quarantine_remove_cache+0xf7/0x170 mm/kasan/quarantine.c:370
kmem_cache_destroy mm/slab_common.c:567 [inline]
kmem_cache_destroy+0x6b/0x180 mm/slab_common.c:527
mon_text_release+0x267/0x3b0 drivers/usb/mon/mon_text.c:677
full_proxy_release+0xc0/0x140 fs/debugfs/file.c:427
__fput+0x3ff/0xb40 fs/file_table.c:469
task_work_run+0x150/0x240 kernel/task_work.c:233
exit_task_work include/linux/task_work.h:40 [inline]
do_exit+0x8b8/0x2b60 kernel/exit.c:976
do_group_exit+0xd5/0x2a0 kernel/exit.c:1118
get_signal+0x1ec7/0x21e0 kernel/signal.c:3034
arch_do_signal_or_restart+0x91/0x770 arch/x86/kernel/signal.c:337
__exit_to_user_mode_loop kernel/entry/common.c:64 [inline]
exit_to_user_mode_loop+0x86/0x4a0 kernel/entry/common.c:98
__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 include/linux/entry-common.h:325 [inline]
do_syscall_64+0x668/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3e0e99c819
Code: Unable to access opcode bytes at 0x7f3e0e99c7ef.
RSP: 002b:00007f3e0f8c80e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007f3e0ec15fa8 RCX: 00007f3e0e99c819
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f3e0ec15fac
RBP: 00007f3e0ec15fa0 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3e0ec16038 R14: 00007ffd97092f50 R15: 00007ffd97093038
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:qlist_move_cache+0x64/0xe0 mm/kasan/quarantine.c:302
Code: 26 49 83 3e 00 0f 84 8d 00 00 00 49 8b 46 08 4c 89 28 4d 89 6e 08 49 c7 45 00 00 00 00 00 49 01 56 10 4d 85 ff 74 62 4d 89 fd <4d> 8b 3f 4c 89 ef e8 c1 92 45 ff 48 c1 e8 0c 48 c1 e0 06 48 03 05
RSP: 0018:ffffc90003447948 EFLAGS: 00010002
RAX: ffff888023738000 RBX: ffffc90003447980 RCX: ffff88801ce9063f
RDX: 0000000000000100 RSI: ffffffff81b986d8 RDI: ffff888029869e80
RBP: ffff8880863d0280 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 4bffff88807aaa1f R14: ffffffff9b1fdfc0 R15: 4bffff88807aaa1f
FS: 0000000000000000(0000) GS:ffff888124340000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f74161e9f00 CR3: 0000000148d5c000 CR4: 00000000003526f0
----------------
Code disassembly (best guess):
0: 26 49 83 3e 00 es cmpq $0x0,(%r14)
5: 0f 84 8d 00 00 00 je 0x98
b: 49 8b 46 08 mov 0x8(%r14),%rax
f: 4c 89 28 mov %r13,(%rax)
12: 4d 89 6e 08 mov %r13,0x8(%r14)
16: 49 c7 45 00 00 00 00 movq $0x0,0x0(%r13)
1d: 00
1e: 49 01 56 10 add %rdx,0x10(%r14)
22: 4d 85 ff test %r15,%r15
25: 74 62 je 0x89
27: 4d 89 fd mov %r15,%r13
* 2a: 4d 8b 3f mov (%r15),%r15 <-- trapping instruction
2d: 4c 89 ef mov %r13,%rdi
30: e8 c1 92 45 ff call 0xff4592f6
35: 48 c1 e8 0c shr $0xc,%rax
39: 48 c1 e0 06 shl $0x6,%rax
3d: 48 rex.W
3e: 03 .byte 0x3
3f: 05 .byte 0x5


---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.

If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title

If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)

If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report

If you want to undo deduplication, reply with:
#syz undup