Unable to handle kernel paging request at virtual address ffffffff80009dec
KASAN: maybe wild-memory-access in range [0x0003fffc0004ef60-0x0003fffc0004ef67]
Mem abort info:
  ESR = 0x0000000096000005
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x05: level 1 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
swapper pgtable: 4k pages, 48-bit VAs, pgdp=0000000207145000
[ffffffff80009dec] pgd=0000000000000000, p4d=000000020aebb403, pud=0000000000000000
Internal error: Oops: 0000000096000005 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 7143 Comm: syz-executor Not tainted 6.16.0-rc5-syzkaller-00067-gec4801305969 #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : rcu_segcblist_restempty kernel/rcu/rcu_segcblist.h:105 [inline]
pc : rcu_segcblist_advance+0x84/0x368 kernel/rcu/rcu_segcblist.c:474
lr : srcu_gp_start_if_needed+0x568/0x10d0 kernel/rcu/srcutree.c:1316
sp : ffff80009dec7730
x29: ffff80009dec7730 x28: fffffdffbf6e1d00 x27: 0000000000000000
x26: dfff800000000000 x25: 1fffffbff7edc3a9 x24: dfff800000000000
x23: ffff0000d4576180 x22: ffffffff80009dec x21: fffffffffffffe70
x20: fffffdffbf6e1d48 x19: fffffdffbf6e1d40 x18: 1fffe000337d4076
x17: ffff80008f66e000 x16: ffff80008aefc568 x15: ffff700013bd8edc
x14: 1ffff00013bd8edc x13: 0000000000000004 x12: ffffffffffffffff
x11: 00000000858aab6c x10: 0000000000000003 x9 : 0000000000000000
x8 : 0000000000000000 x7 : ffff8000805a5da8 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008afc4f40
x2 : 0000000000000008 x1 : fffffffffffffe70 x0 : fffffdffbf6e1d40
Call trace:
 rcu_segcblist_restempty kernel/rcu/rcu_segcblist.h:105 [inline] (P)
 rcu_segcblist_advance+0x84/0x368 kernel/rcu/rcu_segcblist.c:474 (P)
 srcu_gp_start_if_needed+0x568/0x10d0 kernel/rcu/srcutree.c:1316
 __call_srcu kernel/rcu/srcutree.c:1389 [inline]
 __synchronize_srcu+0x2b8/0x348 kernel/rcu/srcutree.c:1441
 synchronize_srcu_expedited+0x24/0x34 kernel/rcu/srcutree.c:1467
 bch2_fs_btree_iter_exit+0x378/0x420 fs/bcachefs/btree_iter.c:3750
 __bch2_fs_free fs/bcachefs/super.c:617 [inline]
 bch2_fs_release+0x2b4/0x770 fs/bcachefs/super.c:667
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x2b0/0x438 lib/kobject.c:737
 bch2_fs_free+0x46c/0x4e0 fs/bcachefs/super.c:734
 bch2_kill_sb+0x48/0x58 fs/bcachefs/fs.c:2619
 deactivate_locked_super+0xc4/0x12c fs/super.c:474
 deactivate_super+0xe0/0x100 fs/super.c:507
 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1417
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1424
 task_work_run+0x1dc/0x260 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x174/0x1f4 arch/arm64/kernel/entry-common.c:155
 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:173 [inline]
 exit_to_user_mode arch/arm64/kernel/entry-common.c:182 [inline]
 el0_svc+0xb8/0x180 arch/arm64/kernel/entry-common.c:880
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:898
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
Code: 38786908 34000068 aa1603e0 9419b759 (f94002c8) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	38786908 	ldrb	w8, [x8, x24]
   4:	34000068 	cbz	w8, 0x10
   8:	aa1603e0 	mov	x0, x22
   c:	9419b759 	bl	0x66dd70
* 10:	f94002c8 	ldr	x8, [x22] <-- trapping instruction