BUG: spinlock bad magic on CPU#0, syz-executor.4/9639
==================================================================
BUG: KASAN: slab-out-of-bounds in string_nocheck lib/vsprintf.c:646 [inline]
BUG: KASAN: slab-out-of-bounds in string+0x1dc/0x264 lib/vsprintf.c:728
Read of size 1 at addr ffff0000de9a6ec0 by task syz-executor.4/9639

CPU: 0 PID: 9639 Comm: syz-executor.4 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298
 __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:377 [inline]
 print_report+0x178/0x518 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:2187
 vprintk_emit+0x110/0x2e8 kernel/printk/printk.c:2284
 vprintk_default+0xa0/0xe4 kernel/printk/printk.c:2318
 vprintk+0x200/0x2d4 kernel/printk/printk_safe.c:45
 _printk+0xdc/0x128 kernel/printk/printk.c:2328
 spin_dump kernel/locking/spinlock_debug.c:64 [inline]
 spin_bug+0x120/0x240 kernel/locking/spinlock_debug.c:78
 debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline]
 do_raw_spin_lock+0x1f0/0x348 kernel/locking/spinlock_debug.c:115
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
 _raw_spin_lock_irqsave+0x64/0x7c kernel/locking/spinlock.c:162
 __wake_up_common_lock kernel/sched/wait.c:105 [inline]
 __wake_up+0x38/0x1b0 kernel/sched/wait.c:127
 unlock_metapage fs/jfs/jfs_metapage.c:38 [inline]
 release_metapage+0x19c/0xc4c fs/jfs/jfs_metapage.c:765
 xtTruncate+0xc78/0x2a08
 jfs_free_zero_link+0x374/0x598 fs/jfs/namei.c:759
 jfs_evict_inode+0x300/0x3f4 fs/jfs/inode.c:153
 evict+0x260/0x68c fs/inode.c:665
 iput_final fs/inode.c:1739 [inline]
 iput+0x734/0x818 fs/inode.c:1765
 dentry_unlink_inode+0x36c/0x4ac fs/dcache.c:400
 __dentry_kill+0x178/0x5e8 fs/dcache.c:603
 shrink_kill+0xd4/0x2cc fs/dcache.c:1048
 shrink_dentry_list+0x31c/0x768 fs/dcache.c:1075
 shrink_dcache_sb+0x234/0x38c fs/dcache.c:1195
 reconfigure_super+0x49c/0x7a8 fs/super.c:1049
 do_remount fs/namespace.c:2892 [inline]
 path_mount+0xc0c/0xe04 fs/namespace.c:3671
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount fs/namespace.c:3875 [inline]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3875
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598

Allocated by task 9639:
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x40/0x78 mm/kasan/common.c:68
 kasan_save_alloc_info+0x40/0x50 mm/kasan/generic.c:575
 unpoison_slab_object mm/kasan/common.c:312 [inline]
 __kasan_slab_alloc+0x74/0x8c mm/kasan/common.c:338
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook mm/slub.c:3813 [inline]
 slab_alloc_node mm/slub.c:3860 [inline]
 kmem_cache_alloc_lru+0x1e0/0x48c mm/slub.c:3879
 alloc_inode_sb include/linux/fs.h:3018 [inline]
 jfs_alloc_inode+0x2c/0x68 fs/jfs/super.c:105
 alloc_inode fs/inode.c:260 [inline]
 iget_locked+0x168/0x7a8 fs/inode.c:1278
 jfs_iget+0x30/0x364 fs/jfs/inode.c:29
 jfs_lookup+0x1e8/0x39c fs/jfs/namei.c:1469
 lookup_one_qstr_excl+0x108/0x230 fs/namei.c:1608
 do_renameat2+0x584/0xe40 fs/namei.c:4990
 __do_sys_renameat2 fs/namei.c:5074 [inline]
 __se_sys_renameat2 fs/namei.c:5071 [inline]
 __arm64_sys_renameat2+0xe0/0xfc fs/namei.c:5071
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 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 object at ffff0000de9a65c0
 which belongs to the cache jfs_ip of size 2240
The buggy address is located 64 bytes to the right of
 allocated 2240-byte region [ffff0000de9a65c0, ffff0000de9a6e80)

The buggy address belongs to the physical page:
page:0000000079108b61 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000de9a2500 pfn:0x11e9a0
head:0000000079108b61 order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff0000f4ef3b01
flags: 0x5ffc00000000840(slab|head|node=0|zone=2|lastcpupid=0x7ff)
page_type: 0xffffffff()
raw: 05ffc00000000840 ffff0000c43b8c80 dead000000000122 0000000000000000
raw: ffff0000de9a2500 00000000800d0005 00000001ffffffff ffff0000f4ef3b01
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000de9a6d80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000de9a6e00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff0000de9a6e80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                           ^
 ffff0000de9a6f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000de9a6f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
==================================================================
 lock: 0xffff0000de9a6668, .magic: ffff8000, .owner: /0, .owner_cpu: 512
CPU: 0 PID: 9639 Comm: syz-executor.4 Tainted: G    B              6.8.0-rc7-syzkaller-g707081b61156 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 dump_stack+0x1c/0x28 lib/dump_stack.c:113
 spin_dump kernel/locking/spinlock_debug.c:70 [inline]
 spin_bug+0x124/0x240 kernel/locking/spinlock_debug.c:78
 debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline]
 do_raw_spin_lock+0x1f0/0x348 kernel/locking/spinlock_debug.c:115
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
 _raw_spin_lock_irqsave+0x64/0x7c kernel/locking/spinlock.c:162
 __wake_up_common_lock kernel/sched/wait.c:105 [inline]
 __wake_up+0x38/0x1b0 kernel/sched/wait.c:127
 unlock_metapage fs/jfs/jfs_metapage.c:38 [inline]
 release_metapage+0x19c/0xc4c fs/jfs/jfs_metapage.c:765
 xtTruncate+0xc78/0x2a08
 jfs_free_zero_link+0x374/0x598 fs/jfs/namei.c:759
 jfs_evict_inode+0x300/0x3f4 fs/jfs/inode.c:153
 evict+0x260/0x68c fs/inode.c:665
 iput_final fs/inode.c:1739 [inline]
 iput+0x734/0x818 fs/inode.c:1765
 dentry_unlink_inode+0x36c/0x4ac fs/dcache.c:400
 __dentry_kill+0x178/0x5e8 fs/dcache.c:603
 shrink_kill+0xd4/0x2cc fs/dcache.c:1048
 shrink_dentry_list+0x31c/0x768 fs/dcache.c:1075
 shrink_dcache_sb+0x234/0x38c fs/dcache.c:1195
 reconfigure_super+0x49c/0x7a8 fs/super.c:1049
 do_remount fs/namespace.c:2892 [inline]
 path_mount+0xc0c/0xe04 fs/namespace.c:3671
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount fs/namespace.c:3875 [inline]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3875
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 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 8904 is out of range for type 'unsigned long[8]'
CPU: 0 PID: 9639 Comm: syz-executor.4 Tainted: G    B              6.8.0-rc7-syzkaller-g707081b61156 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call trace:
 dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106
 dump_stack+0x1c/0x28 lib/dump_stack.c:113
 ubsan_epilogue lib/ubsan.c:217 [inline]
 __ubsan_handle_out_of_bounds+0xf8/0x148 lib/ubsan.c:347
 decode_tail kernel/locking/qspinlock.c:131 [inline]
 queued_spin_lock_slowpath+0x944/0xcf8 kernel/locking/qspinlock.c:471
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x320/0x348 kernel/locking/spinlock_debug.c:116
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
 _raw_spin_lock_irqsave+0x64/0x7c kernel/locking/spinlock.c:162
 __wake_up_common_lock kernel/sched/wait.c:105 [inline]
 __wake_up+0x38/0x1b0 kernel/sched/wait.c:127
 unlock_metapage fs/jfs/jfs_metapage.c:38 [inline]
 release_metapage+0x19c/0xc4c fs/jfs/jfs_metapage.c:765
 xtTruncate+0xc78/0x2a08
 jfs_free_zero_link+0x374/0x598 fs/jfs/namei.c:759
 jfs_evict_inode+0x300/0x3f4 fs/jfs/inode.c:153
 evict+0x260/0x68c fs/inode.c:665
 iput_final fs/inode.c:1739 [inline]
 iput+0x734/0x818 fs/inode.c:1765
 dentry_unlink_inode+0x36c/0x4ac fs/dcache.c:400
 __dentry_kill+0x178/0x5e8 fs/dcache.c:603
 shrink_kill+0xd4/0x2cc fs/dcache.c:1048
 shrink_dentry_list+0x31c/0x768 fs/dcache.c:1075
 shrink_dcache_sb+0x234/0x38c fs/dcache.c:1195
 reconfigure_super+0x49c/0x7a8 fs/super.c:1049
 do_remount fs/namespace.c:2892 [inline]
 path_mount+0xc0c/0xe04 fs/namespace.c:3671
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount fs/namespace.c:3875 [inline]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3875
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 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 ffff7e6e7f860e20
KASAN: probably wild-memory-access in range [0xfffff373fc307100-0xfffff373fc307107]
Mem abort info:
  ESR = 0x0000000096000004
  EC = 0x25: DABT (current EL), IL = 32 bits
  SET = 0, FnV = 0
  EA = 0, S1PTW = 0
  FSC = 0x04: level 0 translation fault
Data abort info:
  ISV = 0, ISS = 0x00000004, 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=00000001adbd5000
[ffff7e6e7f860e20] pgd=0000000000000000, p4d=0000000000000000
Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP
Modules linked in:
CPU: 0 PID: 9639 Comm: syz-executor.4 Tainted: G    B              6.8.0-rc7-syzkaller-g707081b61156 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : queued_spin_lock_slowpath+0x3b0/0xcf8 kernel/locking/qspinlock.c:474
lr : decode_tail kernel/locking/qspinlock.c:131 [inline]
lr : queued_spin_lock_slowpath+0x944/0xcf8 kernel/locking/qspinlock.c:471
sp : ffff800097857060
x29: ffff800097857100 x28: 0000000000008b25 x27: 1ffff00012f0ae18
x26: dfff800000000000 x25: 1fffe0001bd34ccd x24: 0000000000040000
x23: ffff0001b4014d88 x22: fffff373fc307104 x21: ffff0001b4014d80
x20: 1fffe000368029b0 x19: ffff0000de9a6668 x18: 1fffe000367fff96
x17: 0000000000000000 x16: ffff80008ad6b09c x15: ffff7000123e3bf0
x14: 1ffff000123e3bf0 x13: 0000000000000004 x12: ffffffffffffffff
x11: 0000000000040000 x10: ffff80008ec00d80 x9 : 0000000000000001
x8 : 1ffffe6e7f860e20 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800097856918 x4 : ffff80008ed822c0 x3 : ffff8000801c14f0
x2 : 0000000000000001 x1 : 0000000000000002 x0 : 00000000ffffffff
Call trace:
 queued_spin_lock_slowpath+0x3b0/0xcf8 kernel/locking/qspinlock.c:474
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x320/0x348 kernel/locking/spinlock_debug.c:116
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
 _raw_spin_lock_irqsave+0x64/0x7c kernel/locking/spinlock.c:162
 __wake_up_common_lock kernel/sched/wait.c:105 [inline]
 __wake_up+0x38/0x1b0 kernel/sched/wait.c:127
 unlock_metapage fs/jfs/jfs_metapage.c:38 [inline]
 release_metapage+0x19c/0xc4c fs/jfs/jfs_metapage.c:765
 xtTruncate+0xc78/0x2a08
 jfs_free_zero_link+0x374/0x598 fs/jfs/namei.c:759
 jfs_evict_inode+0x300/0x3f4 fs/jfs/inode.c:153
 evict+0x260/0x68c fs/inode.c:665
 iput_final fs/inode.c:1739 [inline]
 iput+0x734/0x818 fs/inode.c:1765
 dentry_unlink_inode+0x36c/0x4ac fs/dcache.c:400
 __dentry_kill+0x178/0x5e8 fs/dcache.c:603
 shrink_kill+0xd4/0x2cc fs/dcache.c:1048
 shrink_dentry_list+0x31c/0x768 fs/dcache.c:1075
 shrink_dcache_sb+0x234/0x38c fs/dcache.c:1195
 reconfigure_super+0x49c/0x7a8 fs/super.c:1049
 do_remount fs/namespace.c:2892 [inline]
 path_mount+0xc0c/0xe04 fs/namespace.c:3671
 do_mount fs/namespace.c:3692 [inline]
 __do_sys_mount fs/namespace.c:3898 [inline]
 __se_sys_mount fs/namespace.c:3875 [inline]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3875
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 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: f94002c8 8b190116 f9400bf9 d343fec8 (387a6908) 
---[ end trace 0000000000000000 ]---
----------------
Code disassembly (best guess):
   0:	f94002c8 	ldr	x8, [x22]
   4:	8b190116 	add	x22, x8, x25
   8:	f9400bf9 	ldr	x25, [sp, #16]
   c:	d343fec8 	lsr	x8, x22, #3
* 10:	387a6908 	ldrb	w8, [x8, x26] <-- trapping instruction