Oleg Nesterov [oleg@xxxxxxxxxx] wrote: | Sorry for delay, I had a vacation. | | On 05/17, Linus Torvalds wrote: | > | > On Sat, 16 May 2009, Rafael J. Wysocki wrote: | > > | > > This message has been generated automatically as a part of a report | > > of recent regressions. | > > | > > The following bug entry is on the current list of known regressions | > > from 2.6.29. Please verify if it still should be listed and let me know | > > (either way). | > > | > > | > > Bug-Entry : http://bugzilla.kernel.org/show_bug.cgi?id=13107 | > > Subject : LTP 20080131 causes defunct processes w/2.6.30-rc1 | > > Submitter : Kumar Gala <galak@xxxxxxxxxxxxxxxxxxx> | > > Date : 2009-04-09 15:43 (38 days old) | > > First-Bad-Commit: http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=b3bfa0cba867f23365b81658b47efd906830879b | > > References : http://marc.info/?l=linux-kernel&m=123929187208953&w=4 | > > http://lkml.org/lkml/2009/4/10/193 | > > Handled-By : Sukadev Bhattiprolu <sukadev@xxxxxxxxxxxxxxxxxx> | > | > I think we have to revert that thing. I haven't heard of any fixes to that | > commit. | | I thought this was already resolved. Yes, so did I. We had asked for more info/confirmation before, most recently on Apr 25 http://lkml.org/lkml/2009/4/25/132, although finding the LTP test like below would have helped :-) | | And I don't think the kernel is buggy, this is expected behaviour. With | this commit (actually, there were several patches) /sbin/init respects | SIGSTOP if the caller has rights to send it, this change is intentional. | I'd even say this is fix. | | Note that even root can't stop init, SIGSTOP should be sent from the | parent namespace, or from ptracer. And ptracer could obviously ptrace_stop() | init even before this patch. | | | But, Kumar, could you please provide more info? I downloaded | ltp-full-20081130.tgz, and I see that ptrace03.c does: I beleive Kumar was running an older version of LTP (20080131) | | /* since Linux 2.6.26, it's allowed to trace init, | so just skip this test case */ | if (i == 0 && tst_kvercmp(2,6,25) > 0) { | tst_resm(TCONF, | "this kernel allows to trace init"); | continue; | } | | So, could you explain which test traces init? | | Oleg. -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
