XFS (loop5): Quotacheck: Done.
==================================================================
BUG: KASAN: stack-out-of-bounds in __lock_acquire+0x114/0x764c kernel/locking/lockdep.c:4926
Read of size 8 at addr ffff800024c07618 by task syz-executor.5/9810

CPU: 1 PID: 9810 Comm: syz-executor.5 Not tainted 6.3.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
Call trace:
 dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 print_address_description mm/kasan/report.c:319 [inline]
 print_report+0x174/0x514 mm/kasan/report.c:430
 kasan_report+0xd4/0x130 mm/kasan/report.c:536
 __asan_report_load8_noabort+0x2c/0x38 mm/kasan/report_generic.c:381
 __lock_acquire+0x114/0x764c kernel/locking/lockdep.c:4926
 lock_acquire+0x2f0/0x8c8 kernel/locking/lockdep.c:5669
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x68/0x88 kernel/locking/spinlock.c:162
 down+0x3c/0xe8 kernel/locking/semaphore.c:59
 xfs_buf_lock+0x284/0xaa8 fs/xfs/xfs_buf.c:1120
 xfs_buf_delwri_submit_buffers+0x14c/0xad8 fs/xfs/xfs_buf.c:2165
 xfs_buf_delwri_submit+0xbc/0x244 fs/xfs/xfs_buf.c:2243
 xfs_qm_shrink_scan+0x17c/0x35c fs/xfs/xfs_qm.c:522
 do_shrink_slab+0x5b8/0x14cc mm/vmscan.c:853
 shrink_slab+0x1e0/0x7f0 mm/vmscan.c:1013
 drop_slab_node mm/vmscan.c:1041 [inline]
 drop_slab+0x124/0x26c mm/vmscan.c:1059
 drop_caches_sysctl_handler+0x178/0x394 fs/drop_caches.c:66
 proc_sys_call_handler+0x4cc/0x7cc fs/proc/proc_sysctl.c:604
 proc_sys_write+0x2c/0x3c fs/proc/proc_sysctl.c:630
 do_iter_write+0x534/0x964 fs/read_write.c:861
 vfs_iter_write+0x88/0xac fs/read_write.c:902
 iter_file_splice_write+0x610/0xc40 fs/splice.c:778
 do_splice_from fs/splice.c:856 [inline]
 direct_splice_actor+0xe4/0x1c0 fs/splice.c:1023
 splice_direct_to_actor+0x3c4/0x944 fs/splice.c:978
 do_splice_direct+0x1f4/0x334 fs/splice.c:1066
 do_sendfile+0x4bc/0xc70 fs/read_write.c:1255
 __do_sys_sendfile64 fs/read_write.c:1317 [inline]
 __se_sys_sendfile64 fs/read_write.c:1309 [inline]
 __arm64_sys_sendfile64+0x23c/0x3b4 fs/read_write.c:1309
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591

The buggy address belongs to the virtual mapping at
 [ffff800024c00000, ffff800024c09000) created by:
 copy_process+0x4b8/0x3808 kernel/fork.c:2100

The buggy address belongs to the physical page:
page:00000000fa254fe9 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10feda
memcg:ffff0000c9bf0b02
flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff ffff0000c9bf0b02
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff800024c07500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff800024c07580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff800024c07600: f3 f3 f3 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00
                            ^
 ffff800024c07680: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1
 ffff800024c07700: 00 00 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
Unable to handle kernel paging request at virtual address ffff7000046ce8c6
KASAN: maybe wild-memory-access in range [0xffff800023674630-0xffff800023674637]
Mem abort info:
  ESR = 0x0000000096000007
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x07: level 3 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000007
  CM = 0, WnR = 0
swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001ace6f000
[ffff7000046ce8c6] pgd=000000023f02e003, p4d=000000023f02e003, pud=000000023f02d003, pmd=100000010d0fb003, pte=0000000000000000
Internal error: Oops: 0000000096000007 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 9810 Comm: syz-executor.5 Tainted: G    B              6.3.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : generic_test_bit include/asm-generic/bitops/generic-non-atomic.h:128 [inline]
pc : __lock_acquire+0xc8c/0x764c kernel/locking/lockdep.c:5026
lr : mark_usage kernel/locking/lockdep.c:4556 [inline]
lr : __lock_acquire+0xc40/0x764c kernel/locking/lockdep.c:5010
sp : ffff80001ef267a0
x29: ffff80001ef26a40 x28: ffff0000deae2508 x27: ffff0000deae1b40
x26: ffff0000deae2580 x25: 0000000000000002 x24: 1fffe0001bd5c4b0
x23: ffff0000deae2560 x22: 0000000000000099 x21: 0000000000000000
x20: 0000000000000000 x19: ffff800023674630 x18: 1fffe000368995b6
x17: 0000000000000000 x16: ffff80001246250c x15: 0000000000000000
x14: 0000000000000000 x13: dfff800000000000 x12: dfff800000000000
x11: ffff0000deae2510 x10: ffff800018c0b620 x9 : ffff800018c0b620
x8 : 1ffff000046ce8c6 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80001ef25fb8 x4 : ffff800015dc52c0 x3 : ffff800008318ee4
x2 : 0000000000000008 x1 : ffff0000deae2560 x0 : 0000000000000001
Call trace:
 generic_test_bit include/asm-generic/bitops/generic-non-atomic.h:128 [inline]
 __lock_acquire+0xc8c/0x764c kernel/locking/lockdep.c:5026
 lock_acquire+0x2f0/0x8c8 kernel/locking/lockdep.c:5669
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x68/0x88 kernel/locking/spinlock.c:162
 down+0x3c/0xe8 kernel/locking/semaphore.c:59
 xfs_buf_lock+0x284/0xaa8 fs/xfs/xfs_buf.c:1120
 xfs_buf_delwri_submit_buffers+0x14c/0xad8 fs/xfs/xfs_buf.c:2165
 xfs_buf_delwri_submit+0xbc/0x244 fs/xfs/xfs_buf.c:2243
 xfs_qm_shrink_scan+0x17c/0x35c fs/xfs/xfs_qm.c:522
 do_shrink_slab+0x5b8/0x14cc mm/vmscan.c:853
 shrink_slab+0x1e0/0x7f0 mm/vmscan.c:1013
 drop_slab_node mm/vmscan.c:1041 [inline]
 drop_slab+0x124/0x26c mm/vmscan.c:1059
 drop_caches_sysctl_handler+0x178/0x394 fs/drop_caches.c:66
 proc_sys_call_handler+0x4cc/0x7cc fs/proc/proc_sysctl.c:604
 proc_sys_write+0x2c/0x3c fs/proc/proc_sysctl.c:630
 do_iter_write+0x534/0x964 fs/read_write.c:861
 vfs_iter_write+0x88/0xac fs/read_write.c:902
 iter_file_splice_write+0x610/0xc40 fs/splice.c:778
 do_splice_from fs/splice.c:856 [inline]
 direct_splice_actor+0xe4/0x1c0 fs/splice.c:1023
 splice_direct_to_actor+0x3c4/0x944 fs/splice.c:978
 do_splice_direct+0x1f4/0x334 fs/splice.c:1066
 do_sendfile+0x4bc/0xc70 fs/read_write.c:1255
 __do_sys_sendfile64 fs/read_write.c:1317 [inline]
 __se_sys_sendfile64 fs/read_write.c:1309 [inline]
 __arm64_sys_sendfile64+0x23c/0x3b4 fs/read_write.c:1309
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:193
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591
Code: d343fd08 927de508 8b080133 d343fe68 (386d6908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	d343fd08 	lsr	x8, x8, #3
   4:	927de508 	and	x8, x8, #0x1ffffffffffffff8
   8:	8b080133 	add	x19, x9, x8
   c:	d343fe68 	lsr	x8, x19, #3
* 10:	386d6908 	ldrb	w8, [x8, x13] <-- trapping instruction