From: James Bottomley <James.Bottomley@HansenPartnership.com>
To: Christoph Lameter <cl@linux.com>
Cc: Pekka Enberg <penberg@kernel.org>, Michal Hocko <mhocko@suse.cz>,
Andrew Morton <akpm@linux-foundation.org>,
Hugh Dickins <hughd@google.com>,
linux-mm@kvack.org, LKML <linux-kernel@vger.kernel.org>,
linux-parisc@vger.kernel.org,
David Rientjes <rientjes@google.com>
Subject: Re: [PATCH v3] mm: make expand_downwards symmetrical to expand_upwards
Date: Tue, 19 Apr 2011 21:33:37 -0500 [thread overview]
Message-ID: <1303266817.11237.37.camel@mulgrave.site> (raw)
In-Reply-To: <alpine.DEB.2.00.1104191657030.26867@router.home>
On Tue, 2011-04-19 at 16:58 -0500, Christoph Lameter wrote:
> On Tue, 19 Apr 2011, James Bottomley wrote:
>
> > > Which part of me telling you that you will break lots of other things in
> > > the core kernel dont you get?
> >
> > I get that you tell me this ... however, the systems that, according to
> > you, should be failing to get to boot prompt do, in fact, manage it.
>
> If you dont use certain subsystems then it may work. Also do you run with
> debuggin on.
>
> The following patch is I think what would be needed to fix it.
Not really: crashes immediately on boot
[ 0.000000] FP[0] enabled: Rev 1 Model 20
[ 0.000000] The 64-bit Kernel has started...
[ 0.000000] bootconsole [ttyB0] enabled
[ 0.000000] Initialized PDC Console for debugging.
[ 0.000000] Determining PDC firmware type: 64 bit PAT.
[ 0.000000] model 00008870 00000491 00000000 00000002 3e0505e7352af710 100000f0 00000008 000000b2 000000b2
[ 0.000000] vers 00000301
[ 0.000000] CPUID vers 20 rev 4 (0x00000284)
[ 0.000000] capabilities 0x35
[ 0.000000] model 9000/800/rp3440
[ 0.000000] parisc_cache_init: Only equivalent aliasing supported!
[ 0.000000] Memory Ranges:
[ 0.000000] 0) Start 0x0000000000000000 End 0x000000003fffffff Size 1024 MB
[ 0.000000] 1) Start 0x0000004040000000 End 0x000000407fdfffff Size 1022 MB
[ 0.000000] Total Memory: 2046 MB
[ 0.000000] initrd: 7f390000-7ffedf6d
[ 0.000000] initrd: reserving 3f390000-3ffedf6d (mem_max 7fe00000)
[ 0.000000] ------------[ cut here ]------------
[ 0.000000] kernel BUG at mm/mm_init.c:127!
[ 0.000000]
[ 0.000000] YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
[ 0.000000] PSW: 00001000000001001111111100001110 Not tainted
[ 0.000000] r00-03 000000ff0804ff0e 000000004076a640 0000000040798c50 0000004080000000
[ 0.000000] r04-07 0000000040746e40 0000000004040000 0000000000000001 0000000040654150
[ 0.000000] r08-11 00000000405bd540 000000000407fe00 0000000000000001 0000000000000000
[ 0.000000] r12-15 00000000405bc740 000f000000000000 00000000000001ff 000000004076a640
[ 0.000000] r16-19 00000000000000ff 0000000000000000 2000000000000000 0000000000000000
[ 0.000000] r20-23 0000004080000000 00000000405bd908 0000000000000000 0000000004040000
[ 0.000000] r24-27 0000000000000001 0000000000000000 0000004080000000 0000000040746e40
[ 0.000000] r28-31 2000000000000000 00000000405b0610 00000000405b0640 0000000000000000
[ 0.000000] sr00-03 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[ 0.000000] sr04-07 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[ 0.000000]
[ 0.000000] IASQ: 0000000000000000 0000000000000000 IAOQ: 0000000040798fac 0000000040798fb0
[ 0.000000] IIR: 03ffe01f ISR: 0000000010350000 IOR: 0000010000000000
[ 0.000000] CPU: 0 CR30: 00000000405b0000 CR31: fffffff0f0e098e0
[ 0.000000] ORIG_R28: 000000000003fe00
[ 0.000000] IAOQ[0]: mminit_verify_page_links+0x84/0xa0
[ 0.000000] IAOQ[1]: mminit_verify_page_links+0x88/0xa0
[ 0.000000] RP(r2): memmap_init_zone+0x148/0x2a0
[ 0.000000] Backtrace:
[ 0.000000] [<0000000040798c50>] memmap_init_zone+0x148/0x2a0
[ 0.000000] [<0000000040777ca8>] free_area_init_node+0x3c8/0x518
[ 0.000000] [<000000004076fde0>] paging_init+0x928/0xb20
[ 0.000000] [<0000000040770a48>] setup_arch+0xe8/0x120
[ 0.000000] [<000000004076c9a0>] start_kernel+0xf0/0x830
[ 0.000000] [<000000004011f4fc>] start_parisc+0xa4/0xb8
[ 0.000000] [<00000000404b0f0c>] packet_ioctl+0x1e4/0x208
[ 0.000000] [<00000000404a79d0>] unix_ioctl+0x70/0x168
[ 0.000000] [<0000000040482d24>] ip_mc_gsfget+0x14c/0x200
[ 0.000000] [<000000004046cc20>] raw_ioctl+0xe8/0x118
[ 0.000000] [<000000004044f524>] do_tcp_getsockopt+0x5c4/0x5d0
[ 0.000000] [<0000000040432d64>] netlink_getsockopt+0x15c/0x178
[ 0.000000]
[ 0.000000] Backtrace:
[ 0.000000] [<000000004011f984>] show_stack+0x14/0x20
[ 0.000000] [<000000004011f9a8>] dump_stack+0x18/0x28
[ 0.000000] [<000000004012022c>] die_if_kernel+0x194/0x258
[ 0.000000] [<0000000040120b30>] handle_interruption+0x840/0x8f8
[ 0.000000] [<0000000040798fac>] mminit_verify_page_links+0x84/0xa0
[ 0.000000]
[ 0.000000] ---[ end trace 139ce121c98e96c9 ]---
[ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
[ 0.000000] Backtrace:
[ 0.000000] [<000000004011f984>] show_stack+0x14/0x20
[ 0.000000] [<000000004011f9a8>] dump_stack+0x18/0x28
[ 0.000000] [<000000004015945c>] panic+0xd4/0x368
[ 0.000000] [<000000004015f054>] do_exit+0x89c/0x9d8
[ 0.000000] [<00000000401202d4>] die_if_kernel+0x23c/0x258
[ 0.000000] [<0000000040120b30>] handle_interruption+0x840/0x8f8
[ 0.000000] [<0000000040798fac>] mminit_verify_page_links+0x84/0xa0
[ 0.000000]
There's a lot more to discontigmem than just page_to_nid ... there's the
whole pfn_to_nid() thing as well
James
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next prev parent reply other threads:[~2011-04-20 2:33 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-04-15 13:51 [PATCH] mm: make expand_downwards symmetrical to expand_upwards Michal Hocko
2011-04-18 3:00 ` Hugh Dickins
2011-04-18 10:01 ` [PATCH v2] " Michal Hocko
2011-04-18 20:56 ` Andrew Morton
[not found] ` <20110419091022.GA21689@tiehlicka.suse.cz>
2011-04-19 11:09 ` [PATCH followup] mm: get rid of CONFIG_STACK_GROWSUP || CONFIG_IA64 Michal Hocko
2011-04-20 0:33 ` KOSAKI Motohiro
2011-04-20 6:59 ` Michal Hocko
2011-04-20 7:08 ` KOSAKI Motohiro
2011-04-26 7:59 ` Michal Hocko
2011-04-19 11:10 ` [PATCH v3] mm: make expand_downwards symmetrical to expand_upwards Michal Hocko
2011-04-19 15:46 ` James Bottomley
2011-04-19 16:06 ` [PATCH v3] mm: make expand_downwards symmetrical to John David Anglin
2011-04-19 16:59 ` James Bottomley
2011-04-19 16:07 ` [PATCH v3] mm: make expand_downwards symmetrical to expand_upwards James Bottomley
2011-04-19 17:05 ` Pekka Enberg
2011-04-19 17:11 ` James Bottomley
2011-04-19 17:15 ` Christoph Lameter
2011-04-19 17:48 ` James Bottomley
2011-04-19 18:10 ` Christoph Lameter
2011-04-19 18:20 ` James Bottomley
2011-04-19 18:35 ` Christoph Lameter
2011-04-19 19:49 ` James Bottomley
2011-04-19 20:56 ` Christoph Lameter
2011-04-19 21:21 ` James Bottomley
2011-04-19 21:39 ` Christoph Lameter
2011-04-19 21:48 ` James Bottomley
2011-04-19 21:58 ` Christoph Lameter
2011-04-20 1:23 ` KOSAKI Motohiro
2011-04-20 2:48 ` James Bottomley
2011-04-20 2:57 ` KOSAKI Motohiro
2011-04-20 13:50 ` Christoph Lameter
2011-04-21 13:32 ` Tejun Heo
2011-04-20 5:53 ` Pekka Enberg
2011-04-20 7:15 ` KOSAKI Motohiro
2011-04-20 7:34 ` Pekka Enberg
2011-04-20 8:40 ` KOSAKI Motohiro
2011-04-20 16:32 ` James Bottomley
2011-04-20 16:50 ` Christoph Lameter
2011-04-20 18:09 ` James Bottomley
2011-04-20 21:18 ` David Rientjes
2011-04-20 22:15 ` James Bottomley
2011-04-20 23:12 ` David Rientjes
2011-04-21 13:16 ` KOSAKI Motohiro
2011-04-21 16:37 ` James Bottomley
2011-04-21 18:33 ` Christoph Lameter
2011-04-21 18:45 ` Dave Hansen
2011-04-22 18:19 ` James Bottomley
2011-04-22 20:24 ` Dave Hansen
2011-04-22 20:35 ` James Bottomley
2011-04-22 21:33 ` James Bottomley
2011-04-23 18:34 ` [PATCH] convert parisc to sparsemem (was Re: [PATCH v3] mm: make expand_downwards symmetrical to expand_upwards) James Bottomley
2011-04-24 16:27 ` John David Anglin
2011-04-26 0:32 ` KOSAKI Motohiro
2011-04-27 16:36 ` Dave Hansen
2011-04-21 20:05 ` [PATCH v3] mm: make expand_downwards symmetrical to expand_upwards James Bottomley
2011-04-21 21:07 ` Christoph Lameter
2011-04-21 21:22 ` James Bottomley
2011-04-21 19:33 ` David Rientjes
2011-04-22 0:34 ` KOSAKI Motohiro
2011-04-21 13:03 ` KOSAKI Motohiro
2011-04-21 19:38 ` David Rientjes
2011-04-21 20:02 ` Christoph Lameter
2011-04-21 21:19 ` David Rientjes
2011-04-21 21:24 ` James Bottomley
2011-04-21 21:34 ` David Rientjes
2011-04-21 21:49 ` James Bottomley
2011-04-21 22:12 ` David Rientjes
2011-04-22 8:02 ` Pekka Enberg
2011-04-22 13:49 ` James Bottomley
2011-04-22 17:00 ` Pekka Enberg
2011-04-22 17:03 ` James Bottomley
2011-04-21 21:41 ` [patch] mm: always set nodes with regular memory in N_NORMAL_MEMORY David Rientjes
2011-04-22 0:36 ` KOSAKI Motohiro
2011-04-20 21:05 ` [PATCH v3] mm: make expand_downwards symmetrical to expand_upwards David Rientjes
2011-04-20 11:20 ` Matthew Wilcox
2011-04-20 11:28 ` Pekka Enberg
2011-04-20 14:15 ` James Bottomley
2011-04-20 14:50 ` Christoph Lameter
2011-04-20 15:02 ` James Bottomley
2011-04-20 15:22 ` Christoph Lameter
2011-04-20 19:25 ` Matthew Wilcox
2011-04-20 21:42 ` David Rientjes
2011-04-21 16:06 ` James Bottomley
2011-04-21 22:19 ` David Rientjes
2011-04-21 22:31 ` James Bottomley
2011-04-20 13:58 ` Christoph Lameter
2011-04-20 21:34 ` David Rientjes
2011-04-20 14:07 ` Christoph Lameter
2011-04-20 2:33 ` James Bottomley [this message]
2011-04-19 17:12 ` Christoph Lameter
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