==================================================================
BUG: KASAN: user-memory-access in instrument_atomic_read include/linux/instrumented.h:68 [inline]
BUG: KASAN: user-memory-access in atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
BUG: KASAN: user-memory-access in jfs_statfs+0x1f8/0x484 fs/jfs/super.c:140
Read of size 4 at addr 00000000000050c0 by task syz.2.48/7751

CPU: 0 UID: 0 PID: 7751 Comm: syz.2.48 Not tainted 6.16.0-rc1-syzkaller-g19272b37aa4f #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:466 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 print_report+0x58/0x84 mm/kasan/report.c:524
 kasan_report+0xb0/0x110 mm/kasan/report.c:634
 check_region_inline mm/kasan/generic.c:-1 [inline]
 kasan_check_range+0x264/0x2a4 mm/kasan/generic.c:189
 __kasan_check_read+0x20/0x30 mm/kasan/shadow.c:31
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
 jfs_statfs+0x1f8/0x484 fs/jfs/super.c:140
 statfs_by_dentry fs/statfs.c:66 [inline]
 vfs_statfs+0x13c/0x2b0 fs/statfs.c:90
 user_statfs+0xc4/0x188 fs/statfs.c:105
 __do_sys_statfs fs/statfs.c:193 [inline]
 __se_sys_statfs fs/statfs.c:190 [inline]
 __arm64_sys_statfs+0xc8/0x148 fs/statfs.c:190
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767
 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
==================================================================
Unable to handle kernel paging request at virtual address dfff800000000a18
KASAN: probably user-memory-access in range [0x00000000000050c0-0x00000000000050c7]
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
[dfff800000000a18] address between user and kernel address ranges
Internal error: Oops: 0000000096000005 [#1]  SMP
Modules linked in:
CPU: 0 UID: 0 PID: 7751 Comm: syz.2.48 Tainted: G    B               6.16.0-rc1-syzkaller-g19272b37aa4f #0 PREEMPT 
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline]
pc : atomic_read include/linux/atomic/atomic-instrumented.h:33 [inline]
pc : jfs_statfs+0x1fc/0x484 fs/jfs/super.c:140
lr : instrument_atomic_read include/linux/instrumented.h:68 [inline]
lr : atomic_read include/linux/atomic/atomic-instrumented.h:32 [inline]
lr : jfs_statfs+0x1f8/0x484 fs/jfs/super.c:140
sp : ffff80009c7c7b00
x29: ffff80009c7c7b10 x28: 0000000000000a18 x27: 1fffe0001b2f6f94
x26: 0000000000005000 x25: 0000000000000000 x24: dfff800000000000
x23: dfff800000000000 x22: ffff80009c7c7ca0 x21: ffff0000d97b7ca0
x20: 00000000000050c0 x19: ffff80009c7c7c80 x18: 1fffe00033802c76
x17: 0000000000000000 x16: ffff80008adbe648 x15: 0000000000000001
x14: 1ffff000125af4f8 x13: 0000000000000000 x12: 0000000000000000
x11: ffff7000125af4f9 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : 0000000000000000 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80009c7c7378 x4 : ffff80008f657060 x3 : ffff8000803b38c8
x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline] (P)
 atomic_read include/linux/atomic/atomic-instrumented.h:33 [inline] (P)
 jfs_statfs+0x1fc/0x484 fs/jfs/super.c:140 (P)
 statfs_by_dentry fs/statfs.c:66 [inline]
 vfs_statfs+0x13c/0x2b0 fs/statfs.c:90
 user_statfs+0xc4/0x188 fs/statfs.c:105
 __do_sys_statfs fs/statfs.c:193 [inline]
 __se_sys_statfs fs/statfs.c:190 [inline]
 __arm64_sys_statfs+0xc8/0x148 fs/statfs.c:190
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x58/0x17c arch/arm64/kernel/entry-common.c:767
 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:786
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
Code: 52800081 aa1403e0 97c36bdc d343fe9c (38f76b88) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	52800081 	mov	w1, #0x4                   	// #4
   4:	aa1403e0 	mov	x0, x20
   8:	97c36bdc 	bl	0xffffffffff0daf78
   c:	d343fe9c 	lsr	x28, x20, #3
* 10:	38f76b88 	ldrsb	w8, [x28, x23] <-- trapping instruction