linux-kernel - Re: [bug] Re: [PATCH 00/35] cpumask: Replace cpumask

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Message-ID: <490088BD.1060606@sgi.com>
Date:	Thu, 23 Oct 2008 07:22:53 -0700
From:	Mike Travis <travis@....com>
To:	Ingo Molnar <mingo@...e.hu>
CC:	Rusty Russell <rusty@...tcorp.com.au>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org
Subject: Re: [bug] Re: [PATCH 00/35] cpumask: Replace cpumask_t with struct
 cpumask

Ingo Molnar wrote:
> ok, the new cpumask code blew up in -tip testing, with various sorts of 
> slab corruptions during scheduler init:
> 
...
Curious thing happens here.  I created the tree as you suggested (branch tip/cpus4096-v2)
and copied in your .config file.  Running it through "silentoldconfig" (choosing only
the defaults), I get the following changes.  This makes me suspect that I'm not testing
the same thing as you are...?  Perhaps my git setup was not correct?

	git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
+	git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip.git
+	branch tip/cpus4096-v2

-CONFIG_BOOTPARAM_SUPPORT_NOT_WANTED=y
-CONFIG_BROKEN_BOOT_ALLOWED4=y
-CONFIG_BROKEN_BOOT_ALLOWED3=y
-# CONFIG_BROKEN_BOOT_ALLOWED2 is not set
-CONFIG_BROKEN_BOOT_EUROPE=y
-CONFIG_BROKEN_BOOT_TITAN=y
-CONFIG_LOCALVERSION=""
+CONFIG_LOCALVERSION="-ingo-config-test-1023-1"
-# CONFIG_SMP_SUPPORT is not set
+CONFIG_SMP=y
-# CONFIG_UP_WANTED_1 is not set
-CONFIG_SMP=y
-# CONFIG_X86_PTRACE_BTS is not set
-CONFIG_X86_REROUTE_FOR_BROKEN_BOOT_IRQS=y
-# CONFIG_DIRECT_GBPAGES is not set
-CONFIG_ILLEGAL_POINTER_VALUE=0xdead000000000000
-CONFIG_CC_STACKPROTECTOR_ALL=y
-CONFIG_CC_STACKPROTECTOR=y
+# CONFIG_CMDLINE_OVERRIDE is not set
+# CONFIG_NET_9P is not set
+# CONFIG_MTD is not set
+# CONFIG_IDE is not set
+# CONFIG_SCSI_SAS_LIBSAS is not set
+# CONFIG_SCSI_AIC94XX is not set
+# CONFIG_SCSI_MVSAS is not set
+# CONFIG_SCSI_DEBUG is not set
+# CONFIG_I2O_CONFIG is not set
-CONFIG_VORTEX=y
+# CONFIG_MISDN is not set
+# CONFIG_PHONE_IXJ is not set
+# CONFIG_I2C_NFORCE2_S4985 is not set
+# CONFIG_EUROTECH_WDT is not set
+# CONFIG_MFD_WM8400 is not set
+# CONFIG_MFD_WM8350_I2C is not set
+# CONFIG_VIDEO_CX88 is not set
+# CONFIG_FB_CIRRUS is not set
+# CONFIG_FB_VGA16 is not set
+# CONFIG_FB_RADEON is not set
+# CONFIG_FB_VIRTUAL is not set
+# CONFIG_FRAMEBUFFER_CONSOLE is not set
+# CONFIG_USB_GADGET is not set
+# CONFIG_STAGING is not set
+# CONFIG_ECRYPT_FS is not set
+# CONFIG_ROOT_NFS is not set
-CONFIG_ALLOW_WARNINGS=y
+# CONFIG_DEBUG_KOBJECT is not set
+# CONFIG_DEBUG_INFO is not set
-CONFIG_DEBUG_NOTIFIERS=y
+# CONFIG_DEBUG_BLOCK_EXT_DEVT is not set
-CONFIG_HAVE_FUNCTION_TRACER=y
+CONFIG_HAVE_FTRACE=y
-
-#
-# Tracers
-#
-CONFIG_FUNCTION_TRACER=y
+CONFIG_FTRACE=y
+# CONFIG_KGDB_TESTS_ON_BOOT is not set
+# CONFIG_DIRECT_GBPAGES is not set
+# CONFIG_SECURITY_ROOTPLUG is not set
+# CONFIG_SECURITY_SELINUX_ENABLE_SECMARK_DEFAULT is not set
+# CONFIG_SECURITY_SMACK is not set
-CONFIG_FORCE_SUCCESSFUL_BUILD=y
-CONFIG_FORCE_MINIMAL_CONFIG=y
-CONFIG_FORCE_MINIMAL_CONFIG_64=y
-CONFIG_FORCE_MINIMAL_CONFIG_PHYS=y


> 
> i suspect it's due to:
> 
> 01b8bd9: sched: cpumask: get rid of boutique sched.c allocations, use cpumask_va
> 
> note, CONFIG_MAXSMP is set in the .config, so this is with the dynamic 
> cpumask_t.
> 
> 	Ingo
> 

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