Hey Jeff, While fuzzing with trinity inside a KVM tools guest running the latest -next kernel, I've stumbled on the following spew: [ 887.078606] WARNING: CPU: 16 PID: 4296 at fs/locks.c:236 locks_free_lock_context+0x10d/0x240() [ 887.079703] Modules linked in: [ 887.080288] CPU: 16 PID: 4296 Comm: trinity-c273 Not tainted 3.19.0-rc4-next-20150112-sasha-00053-g23c147e02e-dirty #1710 [ 887.082229] 0000000000000000 0000000000000000 0000000000000000 ffff8804c9f4f8e8 [ 887.083773] ffffffff9154e0a6 0000000000000000 ffff8804cad98000 ffff8804c9f4f938 [ 887.085280] ffffffff8140a4d0 0000000000000001 ffffffff81bf0d2d ffff8804c9f4f988 [ 887.086792] Call Trace: [ 887.087320] dump_stack (lib/dump_stack.c:52) [ 887.088247] warn_slowpath_common (kernel/panic.c:447) [ 887.089342] ? locks_free_lock_context (fs/locks.c:236 (discriminator 3)) [ 887.090514] warn_slowpath_null (kernel/panic.c:481) [ 887.091629] locks_free_lock_context (fs/locks.c:236 (discriminator 3)) [ 887.092782] __destroy_inode (fs/inode.c:243) [ 887.093817] destroy_inode (fs/inode.c:268) [ 887.094833] evict (fs/inode.c:574) [ 887.095808] iput (fs/inode.c:1503) [ 887.096687] __dentry_kill (fs/dcache.c:323 fs/dcache.c:508) [ 887.097683] ? _raw_spin_trylock (kernel/locking/spinlock.c:136) [ 887.098733] ? dput (fs/dcache.c:545 fs/dcache.c:648) [ 887.099672] dput (fs/dcache.c:649) [ 887.100552] __fput (fs/file_table.c:227) [ 887.101437] ____fput (fs/file_table.c:245) [ 887.102317] task_work_run (kernel/task_work.c:125 (discriminator 1)) [ 887.103356] ? _raw_spin_unlock (./arch/x86/include/asm/preempt.h:95 include/linux/spinlock_api_smp.h:154 kernel/locking/spinlock.c:183) [ 887.104390] do_exit (kernel/exit.c:746) [ 887.105338] ? task_numa_work (kernel/sched/fair.c:2218) [ 887.106384] ? get_signal (kernel/signal.c:2207) [ 887.107492] ? _raw_spin_unlock_irq (./arch/x86/include/asm/paravirt.h:819 include/linux/spinlock_api_smp.h:170 kernel/locking/spinlock.c:199) [ 887.108610] do_group_exit (include/linux/sched.h:775 kernel/exit.c:858) [ 887.109613] get_signal (kernel/signal.c:2358) [ 887.110578] ? trace_hardirqs_off (kernel/locking/lockdep.c:2671) [ 887.111672] do_signal (arch/x86/kernel/signal.c:703) [ 887.112604] ? acct_account_cputime (kernel/tsacct.c:168) [ 887.113722] ? context_tracking_user_exit (./arch/x86/include/asm/paravirt.h:809 (discriminator 2) kernel/context_tracking.c:144 (discriminator 2)) [ 887.114937] ? trace_hardirqs_on_caller (kernel/locking/lockdep.c:2578 kernel/locking/lockdep.c:2625) [ 887.116128] ? trace_hardirqs_on (kernel/locking/lockdep.c:2633) [ 887.117160] do_notify_resume (arch/x86/kernel/signal.c:750) [ 887.118167] int_signal (arch/x86/kernel/entry_64.S:587) Thanks, Sasha -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html