syzbot

XFS (loop2): Unmounting Filesystem d7dc424e-7990-42cb-9f91-9cb7200a101d
Unable to handle kernel paging request at virtual address fe9e001fffe00039
KASAN: maybe wild-memory-access in range [0xf4f400ffff0001c8-0xf4f400ffff0001cf]
Mem abort info:
  ESR = 0x0000000096000004
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x04: level 0 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
[fe9e001fffe00039] address between user and kernel address ranges
Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 UID: 0 PID: 6453 Comm: syz-executor Not tainted 6.14.0-rc7-syzkaller-ga2392f333575 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __lock_acquire+0xfc/0x7904 kernel/locking/lockdep.c:5091
lr : lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5851
sp : ffff8000a4b67620
x29: ffff8000a4b678e0 x28: ffff80008036d160 x27: 0000000000000000
x26: ffff0001b378c540 x25: 0000000000000000 x24: 0000000000000001
x23: 0000000000000000 x22: 1ffff00011f780cd x21: f4f400ffff0001cb
x20: 0000000000000001 x19: 0000000000000000 x18: 1fffe000366f1886
x17: ffff80008fbbd000 x16: ffff8000832b7b9c x15: 0000000000000001
x14: 1ffff00011f780cd x13: dfff800000000000 x12: ffff70001496ceec
x11: ffff80008046cfd0 x10: ffff80008fbc0668 x9 : 00000000000000f3
x8 : 1e9e801fffe00039 x7 : ffff80008036d160 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000000 x1 : 0000000000000000 x0 : f4f400ffff0001cb
Call trace:
 __lock_acquire+0xfc/0x7904 kernel/locking/lockdep.c:5091 (P)
 lock_acquire+0x23c/0x724 kernel/locking/lockdep.c:5851
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
 _raw_spin_lock_irq+0x58/0x70 kernel/locking/spinlock.c:170
 put_pwq_unlocked kernel/workqueue.c:1662 [inline]
 destroy_workqueue+0x8d8/0xdc0 kernel/workqueue.c:5911
 xfs_destroy_mount_workqueues+0x74/0xdc fs/xfs/xfs_super.c:607
 xfs_fs_put_super+0x11c/0x138 fs/xfs/xfs_super.c:1183
 generic_shutdown_super+0x12c/0x2bc fs/super.c:642
 kill_block_super+0x44/0x90 fs/super.c:1710
 xfs_kill_sb+0x20/0x58 fs/xfs/xfs_super.c:2115
 deactivate_locked_super+0xc4/0x12c fs/super.c:473
 deactivate_super+0xe0/0x100 fs/super.c:506
 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1413
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1420
 task_work_run+0x230/0x2e0 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x178/0x1f4 arch/arm64/kernel/entry-common.c:151
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:169 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:178 [inline]
 el0_svc+0xac/0x168 arch/arm64/kernel/entry-common.c:745
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
Code: f007ba88 b9466908 340090a8 d343fea8 (386d6908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	f007ba88 	adrp	x8, 0xf753000
   4:	b9466908 	ldr	w8, [x8, #1640]
   8:	340090a8 	cbz	w8, 0x121c
   c:	d343fea8 	lsr	x8, x21, #3
* 10:	386d6908 	ldrb	w8, [x8, x13] <-- trapping instruction