EXT4-fs (loop1): unmounting filesystem 00000000-0000-0000-0000-000000000000.
BUG: spinlock bad magic on CPU#0, syz-executor.1/6284
==================================================================
BUG: KASAN: global-out-of-bounds in string_nocheck lib/vsprintf.c:646 [inline]
BUG: KASAN: global-out-of-bounds in string+0x1dc/0x264 lib/vsprintf.c:728
Read of size 1 at addr ffff80008f0348f0 by task syz-executor.1/6284

CPU: 0 PID: 6284 Comm: syz-executor.1 Tainted: G        W          6.10.0-rc3-syzkaller-gac2193b4b460 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114
 print_address_description mm/kasan/report.c:377 [inline]
 print_report+0x198/0x538 mm/kasan/report.c:488
 kasan_report+0xd8/0x138 mm/kasan/report.c:601
 __asan_report_load1_noabort+0x20/0x2c mm/kasan/report_generic.c:378
 string_nocheck lib/vsprintf.c:646 [inline]
 string+0x1dc/0x264 lib/vsprintf.c:728
 vsnprintf+0xe9c/0x1a8c lib/vsprintf.c:2824
 vprintk_store+0x38c/0xd80 kernel/printk/printk.c:2225
 vprintk_emit+0x1a8/0x344 kernel/printk/printk.c:2326
 vprintk_default+0xa0/0xe4 kernel/printk/printk.c:2360
 vprintk+0x200/0x2d4 kernel/printk/printk_safe.c:45
 _printk+0xdc/0x128 kernel/printk/printk.c:2370
 spin_dump kernel/locking/spinlock_debug.c:64 [inline]
 spin_bug+0x114/0x1e8 kernel/locking/spinlock_debug.c:78
 debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline]
 do_raw_spin_lock+0x1d8/0x334 kernel/locking/spinlock_debug.c:115
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:120 [inline]
 _raw_spin_lock_irq+0x60/0x70 kernel/locking/spinlock.c:170
 put_pwq_unlocked kernel/workqueue.c:1662 [inline]
 destroy_workqueue+0x8d8/0xdc0 kernel/workqueue.c:5851
 ext4_put_super+0x11c/0xafc fs/ext4/super.c:1302
 generic_shutdown_super+0x128/0x2b8 fs/super.c:642
 kill_block_super+0x44/0x90 fs/super.c:1676
 ext4_kill_sb+0x68/0xa4 fs/ext4/super.c:7301
 deactivate_locked_super+0xc4/0x12c fs/super.c:473
 deactivate_super+0xe0/0x100 fs/super.c:506
 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1267
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1274
 task_work_run+0x230/0x2e0 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x178/0x1f4 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+0xac/0x168 arch/arm64/kernel/entry-common.c:713
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598

The buggy address belongs to the variable:
 dev_attr_max_active+0x50/0x120

The buggy address belongs to the virtual mapping at
 [ffff80008ef20000, ffff800093ca1000) created by:
 declare_kernel_vmas+0xa8/0xb8 arch/arm64/mm/mmu.c:772

The buggy address belongs to the physical page:
page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1ad834
flags: 0x5ffc00000002000(reserved|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000002000 fffffdffc5b60d08 fffffdffc5b60d08 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff80008f034780: 00 00 00 00 00 00 00 f9 f9 f9 f9 f9 00 00 f9 f9
 ffff80008f034800: 00 00 00 f9 f9 f9 f9 f9 00 00 00 00 00 00 00 f9
>ffff80008f034880: f9 f9 f9 f9 00 00 00 00 00 00 00 f9 f9 f9 f9 f9
                                                             ^
 ffff80008f034900: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff80008f034980: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
 lock: 0xffff0000d9ef8000, .magic: ffff0000, .owner: /6445, .owner_cpu: -211026808
CPU: 0 PID: 6284 Comm: syz-executor.1 Tainted: G    B   W          6.10.0-rc3-syzkaller-gac2193b4b460 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114
 dump_stack+0x1c/0x28 lib/dump_stack.c:123
 spin_dump kernel/locking/spinlock_debug.c:70 [inline]
 spin_bug+0x118/0x1e8 kernel/locking/spinlock_debug.c:78
 debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline]
 do_raw_spin_lock+0x1d8/0x334 kernel/locking/spinlock_debug.c:115
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:120 [inline]
 _raw_spin_lock_irq+0x60/0x70 kernel/locking/spinlock.c:170
 put_pwq_unlocked kernel/workqueue.c:1662 [inline]
 destroy_workqueue+0x8d8/0xdc0 kernel/workqueue.c:5851
 ext4_put_super+0x11c/0xafc fs/ext4/super.c:1302
 generic_shutdown_super+0x128/0x2b8 fs/super.c:642
 kill_block_super+0x44/0x90 fs/super.c:1676
 ext4_kill_sb+0x68/0xa4 fs/ext4/super.c:7301
 deactivate_locked_super+0xc4/0x12c fs/super.c:473
 deactivate_super+0xe0/0x100 fs/super.c:506
 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1267
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1274
 task_work_run+0x230/0x2e0 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x178/0x1f4 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+0xac/0x168 arch/arm64/kernel/entry-common.c:713
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in kernel/locking/qspinlock.c:131:9
index 13928 is out of range for type 'unsigned long[8]'
CPU: 0 PID: 6284 Comm: syz-executor.1 Tainted: G    B   W          6.10.0-rc3-syzkaller-gac2193b4b460 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114
 dump_stack+0x1c/0x28 lib/dump_stack.c:123
 ubsan_epilogue lib/ubsan.c:231 [inline]
 __ubsan_handle_out_of_bounds+0xf8/0x148 lib/ubsan.c:429
 decode_tail kernel/locking/qspinlock.c:131 [inline]
 queued_spin_lock_slowpath+0x974/0xd00 kernel/locking/qspinlock.c:468
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x2ec/0x334 kernel/locking/spinlock_debug.c:116
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:120 [inline]
 _raw_spin_lock_irq+0x60/0x70 kernel/locking/spinlock.c:170
 put_pwq_unlocked kernel/workqueue.c:1662 [inline]
 destroy_workqueue+0x8d8/0xdc0 kernel/workqueue.c:5851
 ext4_put_super+0x11c/0xafc fs/ext4/super.c:1302
 generic_shutdown_super+0x128/0x2b8 fs/super.c:642
 kill_block_super+0x44/0x90 fs/super.c:1676
 ext4_kill_sb+0x68/0xa4 fs/ext4/super.c:7301
 deactivate_locked_super+0xc4/0x12c fs/super.c:473
 deactivate_super+0xe0/0x100 fs/super.c:506
 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1267
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1274
 task_work_run+0x230/0x2e0 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x178/0x1f4 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+0xac/0x168 arch/arm64/kernel/entry-common.c:713
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
---[ end trace ]---
Unable to handle kernel paging request at virtual address ffff80008ef0db50
KASAN: probably user-memory-access in range [0x000000047786da80-0x000000047786da87]
Mem abort info:
  ESR = 0x0000000096000047
  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 = 0x00000047, ISS2 = 0x00000000
  CM = 0, WnR = 1, TnD = 0, TagAccess = 0
  GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0
swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001ad2e1000
[ffff80008ef0db50] pgd=0000000000000000, p4d=10000001b248c003, pud=10000001b248d003, pmd=10000001b2492003, pte=0000000000000000
Internal error: Oops: 0000000096000047 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 6284 Comm: syz-executor.1 Tainted: G    B   W          6.10.0-rc3-syzkaller-gac2193b4b460 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : queued_spin_lock_slowpath+0x3cc/0xd00 kernel/locking/qspinlock.c:471
lr : decode_tail kernel/locking/qspinlock.c:131 [inline]
lr : queued_spin_lock_slowpath+0x974/0xd00 kernel/locking/qspinlock.c:468
sp : ffff800098de7880
x29: ffff800098de7920 x28: 000000000000d9a5 x27: 1ffff000131bcf1c
x26: dfff800000000000 x25: 1fffe0001b3df000 x24: 0000000000040000
x23: ffff0001b3db0e48 x22: ffff80008ef0db50 x21: ffff0001b3db0e40
x20: 1fffe000367b61c8 x19: ffff0000d9ef8000 x18: 0000000000000008
x17: 0000000000000000 x16: ffff80008aefc018 x15: ffff7000124677ec
x14: 1ffff000124677ec x13: 0000000000000004 x12: ffffffffffffffff
x11: ffff7000124677ec x10: ffff80008ef0ce40 x9 : 0000000000000001
x8 : 0000000000000000 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800098de6f98 x4 : ffff80008f094de0 x3 : ffff8000801d0830
x2 : 0000000000000001 x1 : 0000000000000004 x0 : ffff0001b3db0e48
Call trace:
 queued_spin_lock_slowpath+0x3cc/0xd00 kernel/locking/qspinlock.c:474
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x2ec/0x334 kernel/locking/spinlock_debug.c:116
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:120 [inline]
 _raw_spin_lock_irq+0x60/0x70 kernel/locking/spinlock.c:170
 put_pwq_unlocked kernel/workqueue.c:1662 [inline]
 destroy_workqueue+0x8d8/0xdc0 kernel/workqueue.c:5851
 ext4_put_super+0x11c/0xafc fs/ext4/super.c:1302
 generic_shutdown_super+0x128/0x2b8 fs/super.c:642
 kill_block_super+0x44/0x90 fs/super.c:1676
 ext4_kill_sb+0x68/0xa4 fs/ext4/super.c:7301
 deactivate_locked_super+0xc4/0x12c fs/super.c:473
 deactivate_super+0xe0/0x100 fs/super.c:506
 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1267
 __cleanup_mnt+0x20/0x30 fs/namespace.c:1274
 task_work_run+0x230/0x2e0 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 do_notify_resume+0x178/0x1f4 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+0xac/0x168 arch/arm64/kernel/entry-common.c:713
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
Code: aa1603e0 973cc04a aa1703e0 52800081 (f90002d5) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	aa1603e0 	mov	x0, x22
   4:	973cc04a 	bl	0xfffffffffcf3012c
   8:	aa1703e0 	mov	x0, x23
   c:	52800081 	mov	w1, #0x4                   	// #4
* 10:	f90002d5 	str	x21, [x22] <-- trapping instruction