On Thu, Oct 8, 2015 at 1:59 AM, Peter Zijlstra <peterz@xxxxxxxxxxxxx> wrote: > On Wed, Oct 07, 2015 at 09:17:44AM -0700, tip-bot for Andy Lutomirski wrote: >> Commit-ID: 72f924783b8a87e4454516520ffb5f35e4930371 >> Gitweb: http://git.kernel.org/tip/72f924783b8a87e4454516520ffb5f35e4930371 >> Author: Andy Lutomirski <luto@xxxxxxxxxx> >> AuthorDate: Mon, 5 Oct 2015 17:47:54 -0700 >> Committer: Ingo Molnar <mingo@xxxxxxxxxx> >> CommitDate: Wed, 7 Oct 2015 11:34:07 +0200 >> >> x86/entry, locking/lockdep: Move lockdep_sys_exit() to prepare_exit_to_usermode() >> >> Rather than worrying about exactly where LOCKDEP_SYS_EXIT should >> go in the asm code, add it to prepare_exit_from_usermode() and >> remove all of the asm calls that are followed by >> prepare_exit_to_usermode(). >> >> LOCKDEP_SYS_EXIT now appears only in the syscall fast paths. > > Does that not pose a risk that something that always takes the slow path > (signals? tracing?) will leak a lock to userspace? No, because while LOCKDEP_SYS_EXIT only happens in the fast path, lockdep_sys_exit (lowercase) will get called in the other cases. --Andy -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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