BUG: spinlock bad magic on CPU#0, jfsCommit/110
 lock: 0xffff8880785e5cd8, .magic: ffffffff, .owner: /768, .owner_cpu: 768
CPU: 0 UID: 0 PID: 110 Comm: jfsCommit Not tainted 6.16.0-syzkaller-11105-ga6923c06a3b2 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline]
 do_raw_spin_lock+0x223/0x2b0 kernel/locking/spinlock_debug.c:115
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
 _raw_spin_lock_irqsave+0x42/0x60 kernel/locking/spinlock.c:162
 __wake_up_common_lock kernel/sched/wait.c:124 [inline]
 __wake_up+0x1c/0x60 kernel/sched/wait.c:146
 unlock_metapage fs/jfs/jfs_metapage.c:40 [inline]
 release_metapage+0x10c/0x880 fs/jfs/jfs_metapage.c:871
 discard_metapage fs/jfs/jfs_metapage.h:88 [inline]
 xtTruncate+0x2382/0x2ca0 fs/jfs/jfs_xtree.c:2502
 jfs_free_zero_link+0x36d/0x4e0 fs/jfs/namei.c:759
 jfs_evict_inode+0x422/0x4b0 fs/jfs/inode.c:153
 evict+0x3e6/0x920 fs/inode.c:810
 iput_final fs/inode.c:1897 [inline]
 iput fs/inode.c:1923 [inline]
 iput+0x521/0x880 fs/inode.c:1909
 txUpdateMap+0x995/0xb70 fs/jfs/jfs_txnmgr.c:2367
 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]
 jfs_lazycommit+0x5f9/0xb30 fs/jfs/jfs_txnmgr.c:2733
 kthread+0x3c5/0x780 kernel/kthread.c:464
 ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in kernel/locking/qspinlock.h:68:9
index 8954 is out of range for type 'long unsigned int [8]'
CPU: 0 UID: 0 PID: 110 Comm: jfsCommit Not tainted 6.16.0-syzkaller-11105-ga6923c06a3b2 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 ubsan_epilogue lib/ubsan.c:233 [inline]
 __ubsan_handle_out_of_bounds+0x11c/0x160 lib/ubsan.c:455
 decode_tail kernel/locking/qspinlock.h:68 [inline]
 __pv_queued_spin_lock_slowpath+0xcdb/0xcf0 kernel/locking/qspinlock.c:285
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:557 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x20e/0x2b0 kernel/locking/spinlock_debug.c:116
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:111 [inline]
 _raw_spin_lock_irqsave+0x42/0x60 kernel/locking/spinlock.c:162
 __wake_up_common_lock kernel/sched/wait.c:124 [inline]
 __wake_up+0x1c/0x60 kernel/sched/wait.c:146
 unlock_metapage fs/jfs/jfs_metapage.c:40 [inline]
 release_metapage+0x10c/0x880 fs/jfs/jfs_metapage.c:871
 discard_metapage fs/jfs/jfs_metapage.h:88 [inline]
 xtTruncate+0x2382/0x2ca0 fs/jfs/jfs_xtree.c:2502
 jfs_free_zero_link+0x36d/0x4e0 fs/jfs/namei.c:759
 jfs_evict_inode+0x422/0x4b0 fs/jfs/inode.c:153
 evict+0x3e6/0x920 fs/inode.c:810
 iput_final fs/inode.c:1897 [inline]
 iput fs/inode.c:1923 [inline]
 iput+0x521/0x880 fs/inode.c:1909
 txUpdateMap+0x995/0xb70 fs/jfs/jfs_txnmgr.c:2367
 txLazyCommit fs/jfs/jfs_txnmgr.c:2664 [inline]
 jfs_lazycommit+0x5f9/0xb30 fs/jfs/jfs_txnmgr.c:2733
 kthread+0x3c5/0x780 kernel/kthread.c:464
 ret_from_fork+0x5d7/0x6f0 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
---[ end trace ]---