On Fri, Jul 24, 2009 at 02:56:24PM +0900, ?????? shin hong wrote: > Hi. I found a suspected race condition bug at fs/locks/__posix_lock_file() > in recent Linux kernel. > > This bug is similar to the one reported in ChangeLog 2.6.24 ( commit > 85c59580b30c82aa771aa33b37217a6b6851bc14 ). > > Big Kernel Lock(BKL) might be released and re-taken > at the call site of locks_delete_lock() > since Releasing-On-Block semantics of BKL. > Locks_delete_lock() may be blocked by kmem_cache_alloc() invocation. Could you explain to me how locks_delete_lock() calls kmem_cache_alloc()? > Please examine the possbility of race condition of this code > and let me know your opinion. > -- > 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 -- Matthew Wilcox Intel Open Source Technology Centre "Bill, look, we understand that you're interested in selling us this operating system, but compare it to ours. We can't possibly take such a retrograde step." -- 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
