BUG: spinlock bad magic on CPU#0, jfsCommit/98
==================================================================
BUG: KASAN: slab-out-of-bounds in string_nocheck lib/vsprintf.c:653 [inline]
BUG: KASAN: slab-out-of-bounds in string+0x200/0x290 lib/vsprintf.c:735
Read of size 1 at addr ffff0000ed54c9c0 by task jfsCommit/98

CPU: 0 UID: 0 PID: 98 Comm: jfsCommit Not tainted 6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/18/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 print_address_description+0xa8/0x238 mm/kasan/report.c:378
 print_report+0x68/0x84 mm/kasan/report.c:482
 kasan_report+0xb0/0x110 mm/kasan/report.c:595
 __asan_report_load1_noabort+0x20/0x2c mm/kasan/report_generic.c:378
 string_nocheck lib/vsprintf.c:653 [inline]
 string+0x200/0x290 lib/vsprintf.c:735
 vsnprintf+0x814/0xd60 lib/vsprintf.c:2926
 vprintk_store+0x308/0xac8 kernel/printk/printk.c:2279
 vprintk_emit+0x224/0x430 kernel/printk/printk.c:2426
 vprintk_default+0x54/0x80 kernel/printk/printk.c:2465
 vprintk+0x90/0x128 kernel/printk/printk_safe.c:82
 _printk+0xd0/0x118 kernel/printk/printk.c:2475
 spin_dump+0x100/0x1ec kernel/locking/spinlock_debug.c:64
 spin_bug kernel/locking/spinlock_debug.c:78 [inline]
 debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline]
 do_raw_spin_lock+0x1c4/0x2cc 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:124 [inline]
 __wake_up+0x40/0x1a8 kernel/sched/wait.c:146
 unlock_metapage fs/jfs/jfs_metapage.c:40 [inline]
 release_metapage+0x164/0xa3c fs/jfs/jfs_metapage.c:871
 xtTruncate+0xbe4/0x27ac fs/jfs/jfs_xtree.c:-1
 jfs_free_zero_link+0x2a4/0x410 fs/jfs/namei.c:759
 jfs_evict_inode+0x2f4/0x3e8 fs/jfs/inode.c:153
 evict+0x414/0x928 fs/inode.c:810
 iput_final fs/inode.c:1897 [inline]
 iput+0x6e4/0x83c fs/inode.c:1923
 txUpdateMap+0x798/0x8d0 fs/jfs/jfs_txnmgr.c:2367
 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]
 jfs_lazycommit+0x394/0x94c fs/jfs/jfs_txnmgr.c:2733
 kthread+0x5fc/0x75c kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844

The buggy address belongs to the object at ffff0000ed54c9c0
 which belongs to the cache jfs_ip of size 2232
The buggy address is located 0 bytes inside of
 allocated 2232-byte region [ffff0000ed54c9c0, ffff0000ed54d278)

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x12d548
head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0
memcg:ffff0000e0a17401
flags: 0x5ffc00000000040(head|node=0|zone=2|lastcpupid=0x7ff)
page_type: f5(slab)
raw: 05ffc00000000040 ffff0000c4933780 dead000000000122 0000000000000000
raw: 0000000000000000 00000000800d000d 00000000f5000000 ffff0000e0a17401
head: 05ffc00000000040 ffff0000c4933780 dead000000000122 0000000000000000
head: 0000000000000000 00000000800d000d 00000000f5000000 ffff0000e0a17401
head: 05ffc00000000003 fffffdffc3b55201 00000000ffffffff 00000000ffffffff
head: ffffffffffffffff 0000000000000000 00000000ffffffff 0000000000000008
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff0000ed54c880: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 ffff0000ed54c900: 00 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc
>ffff0000ed54c980: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
                                           ^
 ffff0000ed54ca00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff0000ed54ca80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
 lock: 0xffff0000ed54c130, .magic: ffff8000, .owner: /-313211720, .owner_cpu: 768
CPU: 0 UID: 0 PID: 98 Comm: jfsCommit Tainted: G    B               6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT 
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/18/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 spin_dump+0x104/0x1ec kernel/locking/spinlock_debug.c:70
 spin_bug kernel/locking/spinlock_debug.c:78 [inline]
 debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline]
 do_raw_spin_lock+0x1c4/0x2cc 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:124 [inline]
 __wake_up+0x40/0x1a8 kernel/sched/wait.c:146
 unlock_metapage fs/jfs/jfs_metapage.c:40 [inline]
 release_metapage+0x164/0xa3c fs/jfs/jfs_metapage.c:871
 xtTruncate+0xbe4/0x27ac fs/jfs/jfs_xtree.c:-1
 jfs_free_zero_link+0x2a4/0x410 fs/jfs/namei.c:759
 jfs_evict_inode+0x2f4/0x3e8 fs/jfs/inode.c:153
 evict+0x414/0x928 fs/inode.c:810
 iput_final fs/inode.c:1897 [inline]
 iput+0x6e4/0x83c fs/inode.c:1923
 txUpdateMap+0x798/0x8d0 fs/jfs/jfs_txnmgr.c:2367
 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]
 jfs_lazycommit+0x394/0x94c fs/jfs/jfs_txnmgr.c:2733
 kthread+0x5fc/0x75c kernel/kthread.c:463
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:844
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in kernel/locking/qspinlock.h:68:9
index 8912 is out of range for type 'unsigned long[8]'
CPU: 0 UID: 0 PID: 98 Comm: jfsCommit Tainted: G    B               6.17.0-rc1-syzkaller-g8f5ae30d69d7 #0 PREEMPT 
Tainted: [B]=BAD_PAGE
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/18/2025
Call trace:
 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:499 (C)
 __dump_stack+0x30/0x40 lib/dump_stack.c:94
 dump_stack_lvl+0xd8/0x12c lib/dump_stack.c:120
 dump_stack+0x1c/0x28 lib/dump_stack.c:129
 ubsan_epilogue+0x14/0x48 lib/ubsan.c:233
 __ubsan_handle_out_of_bounds+0xd0/0xfc lib/ubsan.c:455
 decode_tail kernel/locking/qspinlock.h:68 [inline]
 queued_spin_lock_slowpath+0x9f4/0xaec kernel/locking/qspinlock.c:285
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x2a8/0x2cc 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:124 [inline]
 __wake_up+0x40/0x1a8 kernel/sched/wait.c:146
 unlock_metapage fs/jfs/jfs_metapage.c:40 [inline]
 release_metapage+0x164/0xa3c fs/jfs/jfs_metapage.c:871
 xtTruncate+0xbe4/0x27ac fs/jfs/jfs_xtree.c:-1
 jfs_free_zero_link+0x2a4/0x410 fs/jfs/namei.c:759
 jfs_evict_inode+0x2f4/0x3e8 fs/jfs/inode.c:153
 evict+0x414/0x928 fs/inode.c:810
 iput_final fs/inode.c:1897 [inline]
 iput+0x6e4/0x83c fs/inode.c:1923