loop0: detected capacity change from 0 to 4096
ntfs: volume version 3.1.
ntfs: (device loop0): ntfs_lookup(): ntfs_lookup_ino_by_name() failed with error code -67.
==================================================================
BUG: KASAN: null-ptr-deref in traverse_mounts fs/namei.c:1378 [inline]
BUG: KASAN: null-ptr-deref in handle_mounts fs/namei.c:1498 [inline]
BUG: KASAN: null-ptr-deref in step_into+0x164/0xc20 fs/namei.c:1806
Read of size 4 at addr 0000000000000043 by task syz-executor169/3970

CPU: 1 PID: 3970 Comm: syz-executor169 Not tainted 5.15.160-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call trace:
 dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
 __kasan_report mm/kasan/report.c:438 [inline]
 kasan_report+0x168/0x1e4 mm/kasan/report.c:451
 kasan_check_range+0x274/0x2b4 mm/kasan/generic.c:189
 __kasan_check_read+0x44/0x54 mm/kasan/shadow.c:31
 traverse_mounts fs/namei.c:1378 [inline]
 handle_mounts fs/namei.c:1498 [inline]
 step_into+0x164/0xc20 fs/namei.c:1806
 walk_component+0x214/0x4cc fs/namei.c:1982
 lookup_last fs/namei.c:2431 [inline]
 path_lookupat+0x13c/0x3d0 fs/namei.c:2455
 filename_lookup+0x1c4/0x4c8 fs/namei.c:2484
 user_path_at_empty+0x5c/0x1a4 fs/namei.c:2883
 user_path_at include/linux/namei.h:57 [inline]
 do_utimes_path fs/utimes.c:94 [inline]
 do_utimes+0x118/0x264 fs/utimes.c:144
 __do_sys_utimensat fs/utimes.c:163 [inline]
 __se_sys_utimensat fs/utimes.c:147 [inline]
 __arm64_sys_utimensat+0x144/0x238 fs/utimes.c:147
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
==================================================================
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000043
Mem abort info:
  ESR = 0x0000000096000021
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x21: alignment fault
Data abort info:
  ISV = 0, ISS = 0x00000021
  CM = 0, WnR = 0
user pgtable: 4k pages, 48-bit VAs, pgdp=0000000119412000
[0000000000000043] pgd=08000001088ab003, p4d=08000001088ab003, pud=0800000100b44003, pmd=0000000000000000
Internal error: Oops: 0000000096000021 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 3970 Comm: syz-executor169 Tainted: G    B             5.15.160-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : traverse_mounts fs/namei.c:1378 [inline]
pc : handle_mounts fs/namei.c:1498 [inline]
pc : step_into+0x164/0xc20 fs/namei.c:1806
lr : traverse_mounts fs/namei.c:1378 [inline]
lr : handle_mounts fs/namei.c:1498 [inline]
lr : step_into+0x164/0xc20 fs/namei.c:1806
sp : ffff800018e576e0
x29: ffff800018e57800 x28: 0000000000000043 x27: 0000000000000001
x26: ffff800018e577b0 x25: 1ffff000031caef7 x24: 0000000000000000
x23: dfff800000000000 x22: ffff800018e577b8 x21: 1ffff000031caf4b
x20: ffff800018e57a58 x19: ffff800018e57a20 x18: 1fffe0003690158e
x17: 1fffe0003690158e x16: ffff80001199b4bc x15: ffff8000149eec00
x14: ffff0001b480ac80 x13: ffff0001b480ac7c x12: ffff700002dec164
x11: 0000000000000000 x10: 0000000000000000 x9 : 0000000000000000
x8 : 0000000000000000 x7 : 0000000000000000 x6 : ffff800008269a3c
x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff80000819c844
x2 : 0000000000000001 x1 : 0000000000000001 x0 : 0000000000000000
Call trace:
 traverse_mounts fs/namei.c:1378 [inline]
 handle_mounts fs/namei.c:1498 [inline]
 step_into+0x164/0xc20 fs/namei.c:1806
 walk_component+0x214/0x4cc fs/namei.c:1982
 lookup_last fs/namei.c:2431 [inline]
 path_lookupat+0x13c/0x3d0 fs/namei.c:2455
 filename_lookup+0x1c4/0x4c8 fs/namei.c:2484
 user_path_at_empty+0x5c/0x1a4 fs/namei.c:2883
 user_path_at include/linux/namei.h:57 [inline]
 do_utimes_path fs/utimes.c:94 [inline]
 do_utimes+0x118/0x264 fs/utimes.c:144
 __do_sys_utimensat fs/utimes.c:163 [inline]
 __se_sys_utimensat fs/utimes.c:147 [inline]
 __arm64_sys_utimensat+0x144/0x238 fs/utimes.c:147
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181
 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608
 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626
 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Code: f9406ffc 52800081 aa1c03e0 97fc6530 (88dfff9c) 
---[ end trace c8d937c4a17e4b9a ]---
----------------
Code disassembly (best guess):
   0:	f9406ffc 	ldr	x28, [sp, #216]
   4:	52800081 	mov	w1, #0x4                   	// #4
   8:	aa1c03e0 	mov	x0, x28
   c:	97fc6530 	bl	0xfffffffffff194cc
* 10:	88dfff9c 	ldar	w28, [x28] <-- trapping instruction