XFS (loop4): Quotacheck: Done.
==================================================================
BUG: KASAN: stack-out-of-bounds in __lock_acquire+0x114/0x75f0 kernel/locking/lockdep.c:4942
Read of size 8 at addr ffff80001f697618 by task syz-executor.4/7204

CPU: 1 PID: 7204 Comm: syz-executor.4 Not tainted 6.4.0-rc3-syzkaller-geb0f1697d729 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233
 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240
 __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:351 [inline]
 print_report+0x174/0x514 mm/kasan/report.c:462
 kasan_report+0xd4/0x130 mm/kasan/report.c:572
 __asan_report_load8_noabort+0x20/0x2c mm/kasan/report_generic.c:381
 __lock_acquire+0x114/0x75f0 kernel/locking/lockdep.c:4942
 lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5691
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162
 down+0x3c/0xe8 kernel/locking/semaphore.c:59
 xfs_buf_lock+0x178/0x624 fs/xfs/xfs_buf.c:1119
 xfs_buf_delwri_submit_buffers+0x12c/0x87c fs/xfs/xfs_buf.c:2164
 xfs_buf_delwri_submit+0xbc/0x244 fs/xfs/xfs_buf.c:2242
 xfs_qm_shrink_scan+0x17c/0x35c fs/xfs/xfs_qm.c:522
 do_shrink_slab+0x4d4/0x10a8 mm/vmscan.c:912
 shrink_slab+0x1f8/0x970 mm/vmscan.c:1075
 drop_slab_node mm/vmscan.c:1098 [inline]
 drop_slab+0x124/0x26c mm/vmscan.c:1116
 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+0x65c/0xa80 fs/read_write.c:860
 vfs_iter_write+0x88/0xac fs/read_write.c:901
 iter_file_splice_write+0x610/0xc40 fs/splice.c:795
 do_splice_from fs/splice.c:873 [inline]
 direct_splice_actor+0xe4/0x1c0 fs/splice.c:1039
 splice_direct_to_actor+0x3c4/0x944 fs/splice.c:994
 do_splice_direct+0x1f4/0x334 fs/splice.c:1082
 do_sendfile+0x4bc/0xc70 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1316 [inline]
 __se_sys_sendfile64 fs/read_write.c:1308 [inline]
 __arm64_sys_sendfile64+0x23c/0x3b4 fs/read_write.c:1308
 __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+0x4c/0x15c 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
 [ffff80001f690000, ffff80001f699000) created by:
 copy_process+0x488/0x3514 kernel/fork.c:2333

The buggy address belongs to the physical page:
page:00000000390a5919 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10eee5
memcg:ffff0000ea588502
flags: 0x5ffc00000000000(node=0|zone=2|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 05ffc00000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff ffff0000ea588502
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff80001f697500: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff80001f697580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff80001f697600: f3 f3 f3 f3 f3 f3 f3 f3 00 00 00 00 00 00 00 00
                            ^
 ffff80001f697680: 00 00 00 00 00 00 00 00 00 00 00 00 f1 f1 f1 f1
 ffff80001f697700: 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 ffff70000475538b
KASAN: maybe wild-memory-access in range [0xffff800023aa9c58-0xffff800023aa9c5f]
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, ISS2 = 0x00000000
  CM = 0, WnR = 0, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001b0232000
[ffff70000475538b] pgd=000000023ea4f003, p4d=000000023ea4f003, pud=000000023ea4e003, pmd=100000010cd6d003, pte=0000000000000000
Internal error: Oops: 0000000096000007 [#1] PREEMPT SMP
Modules linked in:
CPU: 1 PID: 7204 Comm: syz-executor.4 Tainted: G    B              6.4.0-rc3-syzkaller-geb0f1697d729 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/28/2023
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+0xc20/0x75f0 kernel/locking/lockdep.c:5044
lr : mark_usage kernel/locking/lockdep.c:4572 [inline]
lr : __lock_acquire+0xbd4/0x75f0 kernel/locking/lockdep.c:5028
sp : ffff80001f686780
x29: ffff80001f686a20 x28: 0000000000000002 x27: ffff0000c82b0000
x26: ffff0000c82b0a58 x25: 1fffe0001905615a x24: ffff0000c82b0ad0
x23: ffff0000c82b0ab0 x22: 00000000000006c2 x21: 0000000000000000
x20: 0000000000000000 x19: ffff800023aa9c58 x18: ffff80001f6865b8
x17: 0000000000000000 x16: ffff800012381170 x15: 0000000000000002
x14: 0000000000000001 x13: dfff800000000000 x12: dfff800000000000
x11: 0000000000080000 x10: ffff800019041780 x9 : ffff800019041780
x8 : 1ffff0000475538b x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff80001f685f98 x4 : ffff800015f9e800 x3 : ffff800008315920
x2 : 0000000000000008 x1 : ffff0000c82b0ab0 x0 : 0000000000000001
Call trace:
 generic_test_bit include/asm-generic/bitops/generic-non-atomic.h:128 [inline]
 __lock_acquire+0xc20/0x75f0 kernel/locking/lockdep.c:5044
 lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5691
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0x5c/0x7c kernel/locking/spinlock.c:162
 down+0x3c/0xe8 kernel/locking/semaphore.c:59
 xfs_buf_lock+0x178/0x624 fs/xfs/xfs_buf.c:1119
 xfs_buf_delwri_submit_buffers+0x12c/0x87c fs/xfs/xfs_buf.c:2164
 xfs_buf_delwri_submit+0xbc/0x244 fs/xfs/xfs_buf.c:2242
 xfs_qm_shrink_scan+0x17c/0x35c fs/xfs/xfs_qm.c:522
 do_shrink_slab+0x4d4/0x10a8 mm/vmscan.c:912
 shrink_slab+0x1f8/0x970 mm/vmscan.c:1075
 drop_slab_node mm/vmscan.c:1098 [inline]
 drop_slab+0x124/0x26c mm/vmscan.c:1116
 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+0x65c/0xa80 fs/read_write.c:860
 vfs_iter_write+0x88/0xac fs/read_write.c:901
 iter_file_splice_write+0x610/0xc40 fs/splice.c:795
 do_splice_from fs/splice.c:873 [inline]
 direct_splice_actor+0xe4/0x1c0 fs/splice.c:1039
 splice_direct_to_actor+0x3c4/0x944 fs/splice.c:994
 do_splice_direct+0x1f4/0x334 fs/splice.c:1082
 do_sendfile+0x4bc/0xc70 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1316 [inline]
 __se_sys_sendfile64 fs/read_write.c:1308 [inline]
 __arm64_sys_sendfile64+0x23c/0x3b4 fs/read_write.c:1308
 __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+0x4c/0x15c 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