2.6.16-rc1-mm3
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From: Pekka Enberg on 25 Jan 2006 09:50 Hi Andy, On 1/25/06, Andy Whitcroft <apw(a)shadowen.org> wrote: > It seems that something is causing panic's on some of our test beds. At > first sight it appears to be something slab related (alloc_slabmgmt). I > had a quick look at what had been added in -mm3 (as -mm2 is ok) but the > only things that jumped out really didn't want to be backed out. > > Any suggestions as to what I should try? Does reverting the following patch make the panic go away? http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.16-rc1/2.6.16-rc1-mm3/broken-out/slab-cache_estimate-cleanup.patch If not, you can safely revert the following patches one by one in reverse order: slab-distinguish-between-object-and-buffer-size.patch slab-minor-cleanup-to-kmem_cache_alloc_node.patch slab-have-index_of-bug-at-compile-time.patch slab-cache_estimate-cleanup.patch slab-extract-slab_destroy_objs.patch slab-extract-slab_putget_obj.patch slab-reduce-inlining.patch slab-extract-virt_to_cacheslab.patch slab-rename-ac_data-to-cpu_cache_get.patch slab-replace-kmem_cache_t-with-struct-kmem_cache.patch slab-fix-kzalloc-and-kstrdup-caller-report-for-config_debug_slab.patch mm-slab-add-kernel-doc-for-one-function.patch slab-fix-sparse-warning.patch Pekka - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Nick Piggin on 25 Jan 2006 11:10 Hi, Michal Piotrowski wrote: > ------------[ cut here ]------------ > kernel BUG at /usr/src/linux-mm/include/linux/mm.h:302! > invalid opcode: 0000 [#1] > PREEMPT SMP DEBUG_PAGEALLOC > last sysfs file: /class/vc/vcsa7/dev > Modules linked in: binfmt_misc thermal fan processor ipv6 w83627hf > hwmon_vid hwmon i2c_isa snd_intel8x0 snd_ac97_codec snd_ac97_bus > sk98lin snd_pcm_oss snd_mixer_oss skge intel_agp snd_pcm snd_timer snd > soundcore i2c_i801 parport_pc parport snd_page_alloc 8250_pnp 8250 > serial_core agpgart rtc ide_cd cdrom hw_random unix > CPU: 0 > EIP: 0060:[<b013fe81>] Not tainted VLI > EFLAGS: 00210246 (2.6.16-rc1-mm3 #1) > EIP is at release_pages+0x33/0x15e Is it repeatable? If so, I'd imagine it must be a specific driver page which is not properly refcounted somewhere. A bug in generic code would have shown up elsewhere by now. Can you try something like the attached patch and see what it gives you? Thanks, Nick -- SUSE Labs, Novell Inc.
From: Andy Whitcroft on 25 Jan 2006 12:00 Pekka Enberg wrote: > Does reverting the following patch make the panic go away? > > http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.16-rc1/2.6.16-rc1-mm3/broken-out/slab-cache_estimate-cleanup.patch No luck with that one ... I'll try the others you suggested. Cheers. -apw - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Andrew Morton on 25 Jan 2006 12:30 Alexander Gran <alex(a)zodiac.dnsalias.org> wrote: > > Hi, > > mm3 is basically running ok, however it has one problem (that ocurs in mm2, > too): > My Netbeans (java-ide) debugger is to slow. It takes some ms (up to 1000 I'd > think) to step over one line, in 13-rc2-mm1 I cannot realize a delay at all. > Any Idea how to profile the kernel/my system to get an Idea. Everything else > (C, C++, java apps..) are running fine. > Strange. It might be worth checking 2.6.16-rc1-git4. If the CPU load is high (ie: 100%) during the delay, and it's mostly system time then yes, a kernel profile would be interesting. Documentation/basic_profiling.txt has details. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
From: Pekka Enberg on 25 Jan 2006 13:20
On Wed, 2006-01-25 at 16:46 +0000, Andy Whitcroft wrote: > Pekka Enberg wrote: > > Does reverting the following patch make the panic go away? > > > > http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.16-rc1/2.6.16-rc1-mm3/broken-out/slab-cache_estimate-cleanup.patch > > No luck with that one ... I'll try the others you suggested. Does vanilla 2.6.16-rc1 work for you? The oops definitely makes me think it's slab related but the other patches don't seem likely suspects. Pekka - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |