==================================================================
BUG: KASAN: user-memory-access in instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
BUG: KASAN: user-memory-access in atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:400 [inline]
BUG: KASAN: user-memory-access in __refcount_sub_and_test include/linux/refcount.h:389 [inline]
BUG: KASAN: user-memory-access in __refcount_dec_and_test include/linux/refcount.h:432 [inline]
BUG: KASAN: user-memory-access in refcount_dec_and_test include/linux/refcount.h:450 [inline]
BUG: KASAN: user-memory-access in posix_acl_release include/linux/posix_acl.h:62 [inline]
BUG: KASAN: user-memory-access in __destroy_inode+0x48c/0x7d0 fs/inode.c:383
Write of size 4 at addr 0000000b00000000 by task syz-executor/6493

CPU: 1 UID: 0 PID: 6493 Comm: syz-executor Not tainted 6.15.0-rc2-syzkaller-gc72692105976 #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
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_write+0x20/0x30 mm/kasan/shadow.c:37
 instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
 atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:400 [inline]
 __refcount_sub_and_test include/linux/refcount.h:389 [inline]
 __refcount_dec_and_test include/linux/refcount.h:432 [inline]
 refcount_dec_and_test include/linux/refcount.h:450 [inline]
 posix_acl_release include/linux/posix_acl.h:62 [inline]
 __destroy_inode+0x48c/0x7d0 fs/inode.c:383
 destroy_inode fs/inode.c:394 [inline]
 evict+0x6bc/0x928 fs/inode.c:834
 dispose_list fs/inode.c:852 [inline]
 evict_inodes+0x650/0x6e8 fs/inode.c:906
 generic_shutdown_super+0xa0/0x2b8 fs/super.c:627
 kill_block_super+0x44/0x90 fs/super.c:1710
 deactivate_locked_super+0xc4/0x12c fs/super.c:473
 deactivate_super+0xe0/0x100 fs/super.c:506
 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1435
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1442
 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+0x178/0x1f8 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+0xb0/0x150 arch/arm64/kernel/entry-common.c:745
 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
==================================================================
Unable to handle kernel paging request at virtual address 0000000b00000000
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
user pgtable: 4k pages, 48-bit VAs, pgdp=000000012a69b000
[0000000b00000000] pgd=08000001113ca403, p4d=08000001113ca403, pud=0000000000000000
Internal error: Oops: 0000000096000005 [#1]  SMP
Modules linked in:
CPU: 1 UID: 0 PID: 6493 Comm: syz-executor Tainted: G    B               6.15.0-rc2-syzkaller-gc72692105976 #0 PREEMPT 
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __lse_atomic_fetch_add_release arch/arm64/include/asm/atomic_lse.h:62 [inline]
pc : __lse_atomic_fetch_sub_release arch/arm64/include/asm/atomic_lse.h:76 [inline]
pc : arch_atomic_fetch_sub_release arch/arm64/include/asm/atomic.h:51 [inline]
pc : raw_atomic_fetch_sub_release include/linux/atomic/atomic-arch-fallback.h:944 [inline]
pc : atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:401 [inline]
pc : __refcount_sub_and_test include/linux/refcount.h:389 [inline]
pc : __refcount_dec_and_test include/linux/refcount.h:432 [inline]
pc : refcount_dec_and_test include/linux/refcount.h:450 [inline]
pc : posix_acl_release include/linux/posix_acl.h:62 [inline]
pc : __destroy_inode+0x498/0x7d0 fs/inode.c:383
lr : __lse_atomic_fetch_add_release arch/arm64/include/asm/atomic_lse.h:62 [inline]
lr : __lse_atomic_fetch_sub_release arch/arm64/include/asm/atomic_lse.h:76 [inline]
lr : arch_atomic_fetch_sub_release arch/arm64/include/asm/atomic.h:51 [inline]
lr : raw_atomic_fetch_sub_release include/linux/atomic/atomic-arch-fallback.h:944 [inline]
lr : atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:401 [inline]
lr : __refcount_sub_and_test include/linux/refcount.h:389 [inline]
lr : __refcount_dec_and_test include/linux/refcount.h:432 [inline]
lr : refcount_dec_and_test include/linux/refcount.h:450 [inline]
lr : posix_acl_release include/linux/posix_acl.h:62 [inline]
lr : __destroy_inode+0x494/0x7d0 fs/inode.c:383
sp : ffff8000a1687910
x29: ffff8000a1687910 x28: dfff800000000000 x27: 1fffe0001df0853c
x26: ffff7000142d0f34 x25: 1fffe0001df08556 x24: dfff800000000000
x23: ffff0000ef842ac0 x22: ffff0000ca0fc068 x21: 0000000000000001
x20: 0000000000000000 x19: 0000000b00000000 x18: 1fffe000367122b6
x17: 0000000000000000 x16: ffff80008ad9af48 x15: 0000000000000001
x14: 1ffff0001254acf0 x13: 0000000000000000 x12: 0000000000000000
x11: ffff70001254acf1 x10: 0000000000ff0100 x9 : 0000000000000000
x8 : 00000000ffffffff x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff8000a1687178 x4 : ffff80008f3d4f00 x3 : ffff8000803af0c0
x2 : 0000000000000001 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 __lse_atomic_fetch_add_release arch/arm64/include/asm/atomic_lse.h:-1 [inline] (P)
 __lse_atomic_fetch_sub_release arch/arm64/include/asm/atomic_lse.h:76 [inline] (P)
 arch_atomic_fetch_sub_release arch/arm64/include/asm/atomic.h:51 [inline] (P)
 raw_atomic_fetch_sub_release include/linux/atomic/atomic-arch-fallback.h:944 [inline] (P)
 atomic_fetch_sub_release include/linux/atomic/atomic-instrumented.h:401 [inline] (P)
 __refcount_sub_and_test include/linux/refcount.h:389 [inline] (P)
 __refcount_dec_and_test include/linux/refcount.h:432 [inline] (P)
 refcount_dec_and_test include/linux/refcount.h:450 [inline] (P)
 posix_acl_release include/linux/posix_acl.h:62 [inline] (P)
 __destroy_inode+0x498/0x7d0 fs/inode.c:383 (P)
 destroy_inode fs/inode.c:394 [inline]
 evict+0x6bc/0x928 fs/inode.c:834
 dispose_list fs/inode.c:852 [inline]
 evict_inodes+0x650/0x6e8 fs/inode.c:906
 generic_shutdown_super+0xa0/0x2b8 fs/super.c:627
 kill_block_super+0x44/0x90 fs/super.c:1710
 deactivate_locked_super+0xc4/0x12c fs/super.c:473
 deactivate_super+0xe0/0x100 fs/super.c:506
 cleanup_mnt+0x31c/0x3ac fs/namespace.c:1435
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1442
 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+0x178/0x1f8 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+0xb0/0x150 arch/arm64/kernel/entry-common.c:745
 el0t_64_sync_handler+0x78/0x108 arch/arm64/kernel/entry-common.c:762
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:600
Code: 97fabbe8 d503201f 97e67d67 12800008 (b8680274) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	97fabbe8 	bl	0xffffffffffeaefa0
   4:	d503201f 	nop
   8:	97e67d67 	bl	0xffffffffff99f5a4
   c:	12800008 	mov	w8, #0xffffffff            	// #-1
* 10:	b8680274 	ldaddl	w8, w20, [x19] <-- trapping instruction