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Message-ID: <20071003002646.GD9814@bakeyournoodle.com> Date: Wed, 3 Oct 2007 10:26:46 +1000 From: tony@...eyournoodle.com (Tony Breeds) To: Linas Vepstas <linas@...tin.ibm.com> Cc: Andy Whitcroft <apw@...dowen.org>, linuxppc-dev@...abs.org, Andrew Morton <akpm@...ux-foundation.org>, linux-kernel@...r.kernel.org Subject: Re: 2.6.23-rc7-mm1 -- powerpc rtas panic On Tue, Oct 02, 2007 at 06:28:19PM -0500, Linas Vepstas wrote: > On Mon, Sep 24, 2007 at 01:35:31PM +0100, Andy Whitcroft wrote: > > Seeing the following from an older power LPAR, pretty sure we had > > this in the previous -mm also: > > I haven't forgetten about this ... and am looking at it now. > Seems that whenever I go to reserve the machine pSeries-102, > someone else is using it :-) This panic is caused by "[POWERPC] pseries: Fix jumbled no_logging flag." (79c0108d1b9db4864ab77b2a95dfa04f2dcf264c), in the powerpc/for-2.6.24 branch. It looks to me that we have logging enabled too early now. I think the following is a reasonable fix? --- Explicitly enable RTAS error logging, when it should be ready. Signed-off-by: Tony Breeds <tony@...eyournoodle.com> --- arch/powerpc/platforms/pseries/rtasd.c | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletions(-) diff --git a/arch/powerpc/platforms/pseries/rtasd.c b/arch/powerpc/platforms/pseries/rtasd.c index 30925d2..0df5d0d 100644 --- a/arch/powerpc/platforms/pseries/rtasd.c +++ b/arch/powerpc/platforms/pseries/rtasd.c @@ -54,7 +54,10 @@ static unsigned int rtas_event_scan_rate; static int full_rtas_msgs = 0; /* Stop logging to nvram after first fatal error */ -static int no_more_logging; +static int no_more_logging = 1; /* Until we initialize everything, + * make sure we don't try logging + * anything */ + static int error_log_cnt; @@ -414,6 +417,8 @@ static int rtasd(void *unused) memset(logdata, 0, rtas_error_log_max); rc = nvram_read_error_log(logdata, rtas_error_log_max, &err_type, &error_log_cnt); + /* We can use rtas_log_buf now */ + no_more_logging = 0; if (!rc) { if (err_type != ERR_FLAG_ALREADY_LOGGED) { Yours Tony linux.conf.au http://linux.conf.au/ || http://lca2008.linux.org.au/ Jan 28 - Feb 02 2008 The Australian Linux Technical Conference! - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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