syzbot

Unable to handle kernel paging request at virtual address fbd5200000000021
KASAN: maybe wild-memory-access in range [0xdead000000000108-0xdead00000000010f]
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
[fbd5200000000021] address between user and kernel address ranges
Internal error: Oops: 0000000096000004 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 100 Comm: jfsCommit Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/03/2025
pstate: 834000c5 (Nzcv daIF +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : __list_add_valid_or_report+0x3c/0x148 lib/list_debug.c:29
lr : __list_add_valid include/linux/list.h:96 [inline]
lr : __list_add include/linux/list.h:158 [inline]
lr : list_add include/linux/list.h:177 [inline]
lr : diUpdatePMap+0x4e8/0xb90 fs/jfs/jfs_imap.c:2831
sp : ffff800099e67b50
x29: ffff800099e67b50 x28: dfff800000000000 x27: 00000000c0000000
x26: 0000000000000000 x25: dead000000000100 x24: 1bd5a00000000021
x23: dfff800000000000 x22: dead000000000108 x21: ffff0000e21152f8
x20: ffff80009b403120 x19: dead000000000100 x18: 0000000000000000
x17: ffff80010ca0e000 x16: ffff800080536ef4 x15: ffff7000133ccf58
x14: 1ffff000133ccf58 x13: 0000000000000004 x12: ffffffffffffffff
x11: ffff7000133ccf58 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : 0000000000000000 x7 : ffff800081c11594 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff80008053700c
x2 : dead000000000100 x1 : ffff80009b403120 x0 : ffff0000e21152f8
Call trace:
 __list_add_valid_or_report+0x3c/0x148 lib/list_debug.c:29 (P)
 __list_add_valid include/linux/list.h:96 [inline]
 __list_add include/linux/list.h:158 [inline]
 list_add include/linux/list.h:177 [inline]
 diUpdatePMap+0x4e8/0xb90 fs/jfs/jfs_imap.c:2831
 txUpdateMap+0x708/0x8d0 fs/jfs/jfs_txnmgr.c:2357
 txLazyCommit fs/jfs/jfs_txnmgr.c:2665 [inline]
 jfs_lazycommit+0x394/0x94c fs/jfs/jfs_txnmgr.c:2734
 kthread+0x5fc/0x75c kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844
Code: aa0103f4 d343fed8 f2fbfff7 aa0003f5 (38776b08) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	aa0103f4 	mov	x20, x1
   4:	d343fed8 	lsr	x24, x22, #3
   8:	f2fbfff7 	movk	x23, #0xdfff, lsl #48
   c:	aa0003f5 	mov	x21, x0
* 10:	38776b08 	ldrb	w8, [x24, x23] <-- trapping instruction