* [BUG] 2.6.25-rc8-mm1 kernel panic while bootup on powerpc
[not found] <20080401213214.8fbb6d6b.akpm@linux-foundation.org>
@ 2008-04-02 6:25 ` Kamalesh Babulal
2008-04-02 6:39 ` Andrew Morton
0 siblings, 1 reply; 10+ messages in thread
From: Kamalesh Babulal @ 2008-04-02 6:25 UTC (permalink / raw)
To: Andrew Morton; +Cc: linuxppc-dev, Balbir Singh, linux-kernel
Hi Andrew,
The 2.6.25-rc8-mm1 kernel panic's while bootup on the power machine(s).
[ 0.000000] ------------[ cut here ]------------
[ 0.000000] kernel BUG at arch/powerpc/mm/init_64.c:240!
[ 0.000000] Oops: Exception in kernel mode, sig: 5 [#1]
[ 0.000000] SMP NR_CPUS=32 NUMA PowerMac
[ 0.000000] Modules linked in:
[ 0.000000] NIP: c0000000003d1dcc LR: c0000000003d1dc4 CTR: c00000000002b6ac
[ 0.000000] REGS: c00000000049b960 TRAP: 0700 Not tainted (2.6.25-rc8-mm1-autokern1)
[ 0.000000] MSR: 9000000000021032 <ME,IR,DR> CR: 44000088 XER: 20000000
[ 0.000000] TASK = c0000000003f9c90[0] 'swapper' THREAD: c000000000498000 CPU: 0
[ 0.000000] GPR00: c0000000003d1dc4 c00000000049bbe0 c0000000004989d0 0000000000000001
[ 0.000000] GPR04: d59aca40f0000000 000000000b000000 0000000000000010 0000000000000000
[ 0.000000] GPR08: 0000000000000004 0000000000000001 c00000027e520800 c0000000004bf0f0
[ 0.000000] GPR12: c0000000004bf020 c0000000003fa900 0000000000000000 0000000000000000
[ 0.000000] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
[ 0.000000] GPR20: 0000000000000000 0000000000000000 0000000000000000 4000000001400000
[ 0.000000] GPR24: 00000000017d64b0 c0000000003d6250 0000000000000000 c000000000504000
[ 0.000000] GPR28: 0000000000000000 cf000000001f8000 0000000001000000 cf00000000000000
[ 0.000000] NIP [c0000000003d1dcc] .vmemmap_populate+0xb8/0xf4
[ 0.000000] LR [c0000000003d1dc4] .vmemmap_populate+0xb0/0xf4
[ 0.000000] Call Trace:
[ 0.000000] [c00000000049bbe0] [c0000000003d1dc4] .vmemmap_populate+0xb0/0xf4 (unreliable)
[ 0.000000] [c00000000049bc70] [c0000000003d2ee8] .sparse_mem_map_populate+0x38/0x60
[ 0.000000] [c00000000049bd00] [c0000000003c242c] .sparse_early_mem_map_alloc+0x54/0x94
[ 0.000000] [c00000000049bd90] [c0000000003c250c] .sparse_init+0xa0/0x20c
[ 0.000000] [c00000000049be50] [c0000000003ab7d0] .setup_arch+0x1ac/0x218
[ 0.000000] [c00000000049bee0] [c0000000003a36ac] .start_kernel+0xe0/0x3fc
[ 0.000000] [c00000000049bf90] [c000000000008594] .start_here_common+0x54/0xc0
[ 0.000000] Instruction dump:
[ 0.000000] 7fe3fb78 7ca02a14 4082000c 3860fff4 4800003c e92289c8 e96289c0 e9090002
[ 0.000000] e8eb0002 4bc575cd 60000000 78630fe0 <0b030000> 7ffff214 7fbfe840 7fe3fb78
[ 0.000000] ---[ end trace 31fd0ba7d8756001 ]---
[ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
--
Thanks & Regards,
Kamalesh Babulal,
Linux Technology Center,
IBM, ISTL.
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [BUG] 2.6.25-rc8-mm1 kernel panic while bootup on powerpc
2008-04-02 6:25 ` [BUG] 2.6.25-rc8-mm1 kernel panic while bootup on powerpc Kamalesh Babulal
@ 2008-04-02 6:39 ` Andrew Morton
2008-04-02 7:08 ` Kamalesh Babulal
2008-04-04 9:24 ` Andy Whitcroft
0 siblings, 2 replies; 10+ messages in thread
From: Andrew Morton @ 2008-04-02 6:39 UTC (permalink / raw)
To: Kamalesh Babulal
Cc: Badari, linux-kernel, linuxppc-dev, Pulavarty, Balbir Singh
On Wed, 02 Apr 2008 11:55:36 +0530 Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> wrote:
> Hi Andrew,
>
> The 2.6.25-rc8-mm1 kernel panic's while bootup on the power machine(s).
>
> [ 0.000000] ------------[ cut here ]------------
> [ 0.000000] kernel BUG at arch/powerpc/mm/init_64.c:240!
> [ 0.000000] Oops: Exception in kernel mode, sig: 5 [#1]
> [ 0.000000] SMP NR_CPUS=32 NUMA PowerMac
> [ 0.000000] Modules linked in:
> [ 0.000000] NIP: c0000000003d1dcc LR: c0000000003d1dc4 CTR: c00000000002b6ac
> [ 0.000000] REGS: c00000000049b960 TRAP: 0700 Not tainted (2.6.25-rc8-mm1-autokern1)
> [ 0.000000] MSR: 9000000000021032 <ME,IR,DR> CR: 44000088 XER: 20000000
> [ 0.000000] TASK = c0000000003f9c90[0] 'swapper' THREAD: c000000000498000 CPU: 0
> [ 0.000000] GPR00: c0000000003d1dc4 c00000000049bbe0 c0000000004989d0 0000000000000001
> [ 0.000000] GPR04: d59aca40f0000000 000000000b000000 0000000000000010 0000000000000000
> [ 0.000000] GPR08: 0000000000000004 0000000000000001 c00000027e520800 c0000000004bf0f0
> [ 0.000000] GPR12: c0000000004bf020 c0000000003fa900 0000000000000000 0000000000000000
> [ 0.000000] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> [ 0.000000] GPR20: 0000000000000000 0000000000000000 0000000000000000 4000000001400000
> [ 0.000000] GPR24: 00000000017d64b0 c0000000003d6250 0000000000000000 c000000000504000
> [ 0.000000] GPR28: 0000000000000000 cf000000001f8000 0000000001000000 cf00000000000000
> [ 0.000000] NIP [c0000000003d1dcc] .vmemmap_populate+0xb8/0xf4
> [ 0.000000] LR [c0000000003d1dc4] .vmemmap_populate+0xb0/0xf4
> [ 0.000000] Call Trace:
> [ 0.000000] [c00000000049bbe0] [c0000000003d1dc4] .vmemmap_populate+0xb0/0xf4 (unreliable)
> [ 0.000000] [c00000000049bc70] [c0000000003d2ee8] .sparse_mem_map_populate+0x38/0x60
> [ 0.000000] [c00000000049bd00] [c0000000003c242c] .sparse_early_mem_map_alloc+0x54/0x94
> [ 0.000000] [c00000000049bd90] [c0000000003c250c] .sparse_init+0xa0/0x20c
> [ 0.000000] [c00000000049be50] [c0000000003ab7d0] .setup_arch+0x1ac/0x218
> [ 0.000000] [c00000000049bee0] [c0000000003a36ac] .start_kernel+0xe0/0x3fc
> [ 0.000000] [c00000000049bf90] [c000000000008594] .start_here_common+0x54/0xc0
> [ 0.000000] Instruction dump:
> [ 0.000000] 7fe3fb78 7ca02a14 4082000c 3860fff4 4800003c e92289c8 e96289c0 e9090002
> [ 0.000000] e8eb0002 4bc575cd 60000000 78630fe0 <0b030000> 7ffff214 7fbfe840 7fe3fb78
> [ 0.000000] ---[ end trace 31fd0ba7d8756001 ]---
> [ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
>
int __meminit vmemmap_populate(struct page *start_page,
unsigned long nr_pages, int node)
{
unsigned long mode_rw;
unsigned long start = (unsigned long)start_page;
unsigned long end = (unsigned long)(start_page + nr_pages);
unsigned long page_size = 1 << mmu_psize_defs[mmu_linear_psize].shift;
mode_rw = _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_COHERENT | PP_RWXX;
/* Align to the page size of the linear mapping. */
start = _ALIGN_DOWN(start, page_size);
for (; start < end; start += page_size) {
int mapped;
void *p;
if (vmemmap_populated(start, page_size))
continue;
p = vmemmap_alloc_block(page_size, node);
if (!p)
return -ENOMEM;
pr_debug("vmemmap %08lx allocated at %p, physical %08lx.\n",
start, p, __pa(p));
mapped = htab_bolt_mapping(start, start + page_size,
__pa(p), mode_rw, mmu_linear_psize,
mmu_kernel_ssize);
=====> BUG_ON(mapped < 0);
}
return 0;
}
Beats me. pseries? Badari has been diddling with the bolted memory code
in git-powerpc...
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [BUG] 2.6.25-rc8-mm1 kernel panic while bootup on powerpc
2008-04-02 6:39 ` Andrew Morton
@ 2008-04-02 7:08 ` Kamalesh Babulal
2008-04-02 7:17 ` Michael Ellerman
2008-04-04 9:24 ` Andy Whitcroft
1 sibling, 1 reply; 10+ messages in thread
From: Kamalesh Babulal @ 2008-04-02 7:08 UTC (permalink / raw)
To: Andrew Morton; +Cc: linuxppc-dev, Balbir Singh, Badari Pulavarty, linux-kernel
Andrew Morton wrote:
> On Wed, 02 Apr 2008 11:55:36 +0530 Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> wrote:
>
>> Hi Andrew,
>>
>> The 2.6.25-rc8-mm1 kernel panic's while bootup on the power machine(s).
>>
>> [ 0.000000] ------------[ cut here ]------------
>> [ 0.000000] kernel BUG at arch/powerpc/mm/init_64.c:240!
>> [ 0.000000] Oops: Exception in kernel mode, sig: 5 [#1]
>> [ 0.000000] SMP NR_CPUS=32 NUMA PowerMac
>> [ 0.000000] Modules linked in:
>> [ 0.000000] NIP: c0000000003d1dcc LR: c0000000003d1dc4 CTR: c00000000002b6ac
>> [ 0.000000] REGS: c00000000049b960 TRAP: 0700 Not tainted (2.6.25-rc8-mm1-autokern1)
>> [ 0.000000] MSR: 9000000000021032 <ME,IR,DR> CR: 44000088 XER: 20000000
>> [ 0.000000] TASK = c0000000003f9c90[0] 'swapper' THREAD: c000000000498000 CPU: 0
>> [ 0.000000] GPR00: c0000000003d1dc4 c00000000049bbe0 c0000000004989d0 0000000000000001
>> [ 0.000000] GPR04: d59aca40f0000000 000000000b000000 0000000000000010 0000000000000000
>> [ 0.000000] GPR08: 0000000000000004 0000000000000001 c00000027e520800 c0000000004bf0f0
>> [ 0.000000] GPR12: c0000000004bf020 c0000000003fa900 0000000000000000 0000000000000000
>> [ 0.000000] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
>> [ 0.000000] GPR20: 0000000000000000 0000000000000000 0000000000000000 4000000001400000
>> [ 0.000000] GPR24: 00000000017d64b0 c0000000003d6250 0000000000000000 c000000000504000
>> [ 0.000000] GPR28: 0000000000000000 cf000000001f8000 0000000001000000 cf00000000000000
>> [ 0.000000] NIP [c0000000003d1dcc] .vmemmap_populate+0xb8/0xf4
>> [ 0.000000] LR [c0000000003d1dc4] .vmemmap_populate+0xb0/0xf4
>> [ 0.000000] Call Trace:
>> [ 0.000000] [c00000000049bbe0] [c0000000003d1dc4] .vmemmap_populate+0xb0/0xf4 (unreliable)
>> [ 0.000000] [c00000000049bc70] [c0000000003d2ee8] .sparse_mem_map_populate+0x38/0x60
>> [ 0.000000] [c00000000049bd00] [c0000000003c242c] .sparse_early_mem_map_alloc+0x54/0x94
>> [ 0.000000] [c00000000049bd90] [c0000000003c250c] .sparse_init+0xa0/0x20c
>> [ 0.000000] [c00000000049be50] [c0000000003ab7d0] .setup_arch+0x1ac/0x218
>> [ 0.000000] [c00000000049bee0] [c0000000003a36ac] .start_kernel+0xe0/0x3fc
>> [ 0.000000] [c00000000049bf90] [c000000000008594] .start_here_common+0x54/0xc0
>> [ 0.000000] Instruction dump:
>> [ 0.000000] 7fe3fb78 7ca02a14 4082000c 3860fff4 4800003c e92289c8 e96289c0 e9090002
>> [ 0.000000] e8eb0002 4bc575cd 60000000 78630fe0 <0b030000> 7ffff214 7fbfe840 7fe3fb78
>> [ 0.000000] ---[ end trace 31fd0ba7d8756001 ]---
>> [ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
>>
>
> int __meminit vmemmap_populate(struct page *start_page,
> unsigned long nr_pages, int node)
> {
> unsigned long mode_rw;
> unsigned long start = (unsigned long)start_page;
> unsigned long end = (unsigned long)(start_page + nr_pages);
> unsigned long page_size = 1 << mmu_psize_defs[mmu_linear_psize].shift;
>
> mode_rw = _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_COHERENT | PP_RWXX;
>
> /* Align to the page size of the linear mapping. */
> start = _ALIGN_DOWN(start, page_size);
>
> for (; start < end; start += page_size) {
> int mapped;
> void *p;
>
> if (vmemmap_populated(start, page_size))
> continue;
>
> p = vmemmap_alloc_block(page_size, node);
> if (!p)
> return -ENOMEM;
>
> pr_debug("vmemmap %08lx allocated at %p, physical %08lx.\n",
> start, p, __pa(p));
>
> mapped = htab_bolt_mapping(start, start + page_size,
> __pa(p), mode_rw, mmu_linear_psize,
> mmu_kernel_ssize);
> =====> BUG_ON(mapped < 0);
> }
>
> return 0;
> }
>
> Beats me. pseries? Badari has been diddling with the bolted memory code
> in git-powerpc...
One of the machines is the Power5 and another is PowerMac G5, on which the
same kernel panic is seen.
--
Thanks & Regards,
Kamalesh Babulal,
Linux Technology Center,
IBM, ISTL.
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [BUG] 2.6.25-rc8-mm1 kernel panic while bootup on powerpc
2008-04-02 7:08 ` Kamalesh Babulal
@ 2008-04-02 7:17 ` Michael Ellerman
2008-04-02 17:09 ` Kamalesh Babulal
2008-04-02 19:22 ` Badari Pulavarty
0 siblings, 2 replies; 10+ messages in thread
From: Michael Ellerman @ 2008-04-02 7:17 UTC (permalink / raw)
To: Kamalesh Babulal
Cc: linuxppc-dev, Andrew Morton, Badari Pulavarty, linux-kernel,
Balbir Singh
[-- Attachment #1: Type: text/plain, Size: 4590 bytes --]
On Wed, 2008-04-02 at 12:38 +0530, Kamalesh Babulal wrote:
> Andrew Morton wrote:
> > On Wed, 02 Apr 2008 11:55:36 +0530 Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> wrote:
> >
> >> Hi Andrew,
> >>
> >> The 2.6.25-rc8-mm1 kernel panic's while bootup on the power machine(s).
> >>
> >> [ 0.000000] ------------[ cut here ]------------
> >> [ 0.000000] kernel BUG at arch/powerpc/mm/init_64.c:240!
> >> [ 0.000000] Oops: Exception in kernel mode, sig: 5 [#1]
> >> [ 0.000000] SMP NR_CPUS=32 NUMA PowerMac
> >> [ 0.000000] Modules linked in:
> >> [ 0.000000] NIP: c0000000003d1dcc LR: c0000000003d1dc4 CTR: c00000000002b6ac
> >> [ 0.000000] REGS: c00000000049b960 TRAP: 0700 Not tainted (2.6.25-rc8-mm1-autokern1)
> >> [ 0.000000] MSR: 9000000000021032 <ME,IR,DR> CR: 44000088 XER: 20000000
> >> [ 0.000000] TASK = c0000000003f9c90[0] 'swapper' THREAD: c000000000498000 CPU: 0
> >> [ 0.000000] GPR00: c0000000003d1dc4 c00000000049bbe0 c0000000004989d0 0000000000000001
> >> [ 0.000000] GPR04: d59aca40f0000000 000000000b000000 0000000000000010 0000000000000000
> >> [ 0.000000] GPR08: 0000000000000004 0000000000000001 c00000027e520800 c0000000004bf0f0
> >> [ 0.000000] GPR12: c0000000004bf020 c0000000003fa900 0000000000000000 0000000000000000
> >> [ 0.000000] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> >> [ 0.000000] GPR20: 0000000000000000 0000000000000000 0000000000000000 4000000001400000
> >> [ 0.000000] GPR24: 00000000017d64b0 c0000000003d6250 0000000000000000 c000000000504000
> >> [ 0.000000] GPR28: 0000000000000000 cf000000001f8000 0000000001000000 cf00000000000000
> >> [ 0.000000] NIP [c0000000003d1dcc] .vmemmap_populate+0xb8/0xf4
> >> [ 0.000000] LR [c0000000003d1dc4] .vmemmap_populate+0xb0/0xf4
> >> [ 0.000000] Call Trace:
> >> [ 0.000000] [c00000000049bbe0] [c0000000003d1dc4] .vmemmap_populate+0xb0/0xf4 (unreliable)
> >> [ 0.000000] [c00000000049bc70] [c0000000003d2ee8] .sparse_mem_map_populate+0x38/0x60
> >> [ 0.000000] [c00000000049bd00] [c0000000003c242c] .sparse_early_mem_map_alloc+0x54/0x94
> >> [ 0.000000] [c00000000049bd90] [c0000000003c250c] .sparse_init+0xa0/0x20c
> >> [ 0.000000] [c00000000049be50] [c0000000003ab7d0] .setup_arch+0x1ac/0x218
> >> [ 0.000000] [c00000000049bee0] [c0000000003a36ac] .start_kernel+0xe0/0x3fc
> >> [ 0.000000] [c00000000049bf90] [c000000000008594] .start_here_common+0x54/0xc0
> >> [ 0.000000] Instruction dump:
> >> [ 0.000000] 7fe3fb78 7ca02a14 4082000c 3860fff4 4800003c e92289c8 e96289c0 e9090002
> >> [ 0.000000] e8eb0002 4bc575cd 60000000 78630fe0 <0b030000> 7ffff214 7fbfe840 7fe3fb78
> >> [ 0.000000] ---[ end trace 31fd0ba7d8756001 ]---
> >> [ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
> >>
> >
> > int __meminit vmemmap_populate(struct page *start_page,
> > unsigned long nr_pages, int node)
> > {
> > unsigned long mode_rw;
> > unsigned long start = (unsigned long)start_page;
> > unsigned long end = (unsigned long)(start_page + nr_pages);
> > unsigned long page_size = 1 << mmu_psize_defs[mmu_linear_psize].shift;
> >
> > mode_rw = _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_COHERENT | PP_RWXX;
> >
> > /* Align to the page size of the linear mapping. */
> > start = _ALIGN_DOWN(start, page_size);
> >
> > for (; start < end; start += page_size) {
> > int mapped;
> > void *p;
> >
> > if (vmemmap_populated(start, page_size))
> > continue;
> >
> > p = vmemmap_alloc_block(page_size, node);
> > if (!p)
> > return -ENOMEM;
> >
> > pr_debug("vmemmap %08lx allocated at %p, physical %08lx.\n",
> > start, p, __pa(p));
> >
> > mapped = htab_bolt_mapping(start, start + page_size,
> > __pa(p), mode_rw, mmu_linear_psize,
> > mmu_kernel_ssize);
> > =====> BUG_ON(mapped < 0);
> > }
> >
> > return 0;
> > }
> >
> > Beats me. pseries? Badari has been diddling with the bolted memory code
> > in git-powerpc...
>
> One of the machines is the Power5 and another is PowerMac G5, on which the
> same kernel panic is seen.
Can you enable DEBUG_LOW in arch/powerpc/platforms/pseries/lpar.c, that
should show what's happening in hpte_insert().
cheers
--
Michael Ellerman
OzLabs, IBM Australia Development Lab
wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)
We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person
[-- Attachment #2: This is a digitally signed message part --]
[-- Type: application/pgp-signature, Size: 189 bytes --]
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [BUG] 2.6.25-rc8-mm1 kernel panic while bootup on powerpc
2008-04-02 7:17 ` Michael Ellerman
@ 2008-04-02 17:09 ` Kamalesh Babulal
2008-04-02 18:15 ` Badari Pulavarty
2008-04-02 19:22 ` Badari Pulavarty
1 sibling, 1 reply; 10+ messages in thread
From: Kamalesh Babulal @ 2008-04-02 17:09 UTC (permalink / raw)
To: michael
Cc: linuxppc-dev, Andrew Morton, Badari Pulavarty, linux-kernel,
Balbir Singh
Michael Ellerman wrote:
> On Wed, 2008-04-02 at 12:38 +0530, Kamalesh Babulal wrote:
>> Andrew Morton wrote:
>>> On Wed, 02 Apr 2008 11:55:36 +0530 Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> wrote:
>>>
>>>> Hi Andrew,
>>>>
>>>> The 2.6.25-rc8-mm1 kernel panic's while bootup on the power machine(s).
>>>>
>>>> [ 0.000000] ------------[ cut here ]------------
>>>> [ 0.000000] kernel BUG at arch/powerpc/mm/init_64.c:240!
>>>> [ 0.000000] Oops: Exception in kernel mode, sig: 5 [#1]
>>>> [ 0.000000] SMP NR_CPUS=32 NUMA PowerMac
>>>> [ 0.000000] Modules linked in:
>>>> [ 0.000000] NIP: c0000000003d1dcc LR: c0000000003d1dc4 CTR: c00000000002b6ac
>>>> [ 0.000000] REGS: c00000000049b960 TRAP: 0700 Not tainted (2.6.25-rc8-mm1-autokern1)
>>>> [ 0.000000] MSR: 9000000000021032 <ME,IR,DR> CR: 44000088 XER: 20000000
>>>> [ 0.000000] TASK = c0000000003f9c90[0] 'swapper' THREAD: c000000000498000 CPU: 0
>>>> [ 0.000000] GPR00: c0000000003d1dc4 c00000000049bbe0 c0000000004989d0 0000000000000001
>>>> [ 0.000000] GPR04: d59aca40f0000000 000000000b000000 0000000000000010 0000000000000000
>>>> [ 0.000000] GPR08: 0000000000000004 0000000000000001 c00000027e520800 c0000000004bf0f0
>>>> [ 0.000000] GPR12: c0000000004bf020 c0000000003fa900 0000000000000000 0000000000000000
>>>> [ 0.000000] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
>>>> [ 0.000000] GPR20: 0000000000000000 0000000000000000 0000000000000000 4000000001400000
>>>> [ 0.000000] GPR24: 00000000017d64b0 c0000000003d6250 0000000000000000 c000000000504000
>>>> [ 0.000000] GPR28: 0000000000000000 cf000000001f8000 0000000001000000 cf00000000000000
>>>> [ 0.000000] NIP [c0000000003d1dcc] .vmemmap_populate+0xb8/0xf4
>>>> [ 0.000000] LR [c0000000003d1dc4] .vmemmap_populate+0xb0/0xf4
>>>> [ 0.000000] Call Trace:
>>>> [ 0.000000] [c00000000049bbe0] [c0000000003d1dc4] .vmemmap_populate+0xb0/0xf4 (unreliable)
>>>> [ 0.000000] [c00000000049bc70] [c0000000003d2ee8] .sparse_mem_map_populate+0x38/0x60
>>>> [ 0.000000] [c00000000049bd00] [c0000000003c242c] .sparse_early_mem_map_alloc+0x54/0x94
>>>> [ 0.000000] [c00000000049bd90] [c0000000003c250c] .sparse_init+0xa0/0x20c
>>>> [ 0.000000] [c00000000049be50] [c0000000003ab7d0] .setup_arch+0x1ac/0x218
>>>> [ 0.000000] [c00000000049bee0] [c0000000003a36ac] .start_kernel+0xe0/0x3fc
>>>> [ 0.000000] [c00000000049bf90] [c000000000008594] .start_here_common+0x54/0xc0
>>>> [ 0.000000] Instruction dump:
>>>> [ 0.000000] 7fe3fb78 7ca02a14 4082000c 3860fff4 4800003c e92289c8 e96289c0 e9090002
>>>> [ 0.000000] e8eb0002 4bc575cd 60000000 78630fe0 <0b030000> 7ffff214 7fbfe840 7fe3fb78
>>>> [ 0.000000] ---[ end trace 31fd0ba7d8756001 ]---
>>>> [ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
>>>>
>>> int __meminit vmemmap_populate(struct page *start_page,
>>> unsigned long nr_pages, int node)
>>> {
>>> unsigned long mode_rw;
>>> unsigned long start = (unsigned long)start_page;
>>> unsigned long end = (unsigned long)(start_page + nr_pages);
>>> unsigned long page_size = 1 << mmu_psize_defs[mmu_linear_psize].shift;
>>>
>>> mode_rw = _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_COHERENT | PP_RWXX;
>>>
>>> /* Align to the page size of the linear mapping. */
>>> start = _ALIGN_DOWN(start, page_size);
>>>
>>> for (; start < end; start += page_size) {
>>> int mapped;
>>> void *p;
>>>
>>> if (vmemmap_populated(start, page_size))
>>> continue;
>>>
>>> p = vmemmap_alloc_block(page_size, node);
>>> if (!p)
>>> return -ENOMEM;
>>>
>>> pr_debug("vmemmap %08lx allocated at %p, physical %08lx.\n",
>>> start, p, __pa(p));
>>>
>>> mapped = htab_bolt_mapping(start, start + page_size,
>>> __pa(p), mode_rw, mmu_linear_psize,
>>> mmu_kernel_ssize);
>>> =====> BUG_ON(mapped < 0);
>>> }
>>>
>>> return 0;
>>> }
>>>
>>> Beats me. pseries? Badari has been diddling with the bolted memory code
>>> in git-powerpc...
>> One of the machines is the Power5 and another is PowerMac G5, on which the
>> same kernel panic is seen.
>
> Can you enable DEBUG_LOW in arch/powerpc/platforms/pseries/lpar.c, that
> should show what's happening in hpte_insert().
>
> cheers
>
Just define DEBUG_LOW did not fetch and debug information, so added some printk to
htab_bolt_mapping () and pSeries_lpar_hpte_insert ()
[boot]0012 Setup Arch
htab_bolt_mapping (vstart cf00000000000000, vend cf00000001000000, pstart 3000000,mode 190, psize 4, ssize 0)
htab_bolt_mapping: calling c000000000888f00
_hpte_insert(group=252078, va=d59aca40f0000000, pa=0000000003000000, rflags=194, vflags=10, psize=4 ssize=0)
htab_bolt_mapping (vstart cf00000000000000, vend cf00000001000000, pstart 4000000,mode 190, psize 4, ssize 0)
htab_bolt_mapping: calling c000000000888f00
_hpte_insert(group=252078, va=d59aca40f0000000, pa=0000000004000000, rflags=194, vflags=10, psize=4 ssize=0)
htab_bolt_mapping (vstart cf00000000000000, vend cf00000001000000, pstart 5000000,mode 190, psize 4, ssize 0)
htab_bolt_mapping: calling c000000000888f00
_hpte_insert(group=252078, va=d59aca40f0000000, pa=0000000005000000, rflags=194, vflags=10, psize=4 ssize=0)
htab_bolt_mapping (vstart cf00000000000000, vend cf00000001000000, pstart 6000000,mode 190, psize 4, ssize 0)
htab_bolt_mapping: calling c000000000888f00
_hpte_insert(group=252078, va=d59aca40f0000000, pa=0000000006000000, rflags=194, vflags=10, psize=4 ssize=0)
htab_bolt_mapping (vstart cf00000000000000, vend cf00000001000000, pstart 8000000,mode 190, psize 4, ssize 0)
htab_bolt_mapping: calling c000000000888f00
_hpte_insert(group=252078, va=d59aca40f0000000, pa=0000000008000000, rflags=194, vflags=10, psize=4 ssize=0)
htab_bolt_mapping (vstart cf00000000000000, vend cf00000001000000, pstart 9000000,mode 190, psize 4, ssize 0)
htab_bolt_mapping: calling c000000000888f00
_hpte_insert(group=252078, va=d59aca40f0000000, pa=0000000009000000, rflags=194, vflags=10, psize=4 ssize=0)
htab_bolt_mapping (vstart cf00000000000000, vend cf00000001000000, pstart a000000,mode 190, psize 4, ssize 0)
htab_bolt_mapping: calling c000000000888f00
_hpte_insert(group=252078, va=d59aca40f0000000, pa=000000000a000000, rflags=194, vflags=10, psize=4 ssize=0)
htab_bolt_mapping (vstart cf00000000000000, vend cf00000001000000, pstart b000000,mode 190, psize 4, ssize 0)
htab_bolt_mapping: calling c000000000888f00
_hpte_insert(group=252078, va=d59aca40f0000000, pa=000000000b000000, rflags=194, vflags=10, psize=4 ssize=0)
htab_bolt_mapping (vstart cf00000000000000, vend cf00000001000000, pstart c000000,mode 190, psize 4, ssize 0)
htab_bolt_mapping: calling c000000000888f00
_hpte_insert(group=252078, va=d59aca40f0000000, pa=000000000c000000, rflags=194, vflags=10, psize=4 ssize=0)
------------[ cut here ]------------
kernel BUG at arch/powerpc/mm/init_64.c:240!
Oops: Exception in kernel mode, sig: 5 [#1]
SMP NR_CPUS=128 NUMA pSeries
Modules linked in:
NIP: c000000000774b88 LR: c000000000774b80 CTR: 0000000000000000
REGS: c0000000008f7950 TRAP: 0700 Not tainted (2.6.25-rc8-mm1-autotest)
MSR: 8000000000021032 <ME,IR,DR> CR: 24000088 XER: 00000001
TASK = c0000000007dffd0[0] 'swapper' THREAD: c0000000008f4000 CPU: 0
GPR00: c000000000774b80 c0000000008f7bd0 c0000000008f6c00 0000000000000001
GPR04: fffffffffffffffa 000000000000005f 000000000000005e 0000000000000477
GPR08: 00000009b346bb78 8000000006520800 fffffffffffffffa ffffffffffffffff
GPR12: 0000000024000082 c0000000007e0980 0000000000000000 c00000000069ab58
GPR16: 4000000001c00000 c0000000006993e8 0000000000000000 00000000002b1000
GPR20: 000000000237b450 c00000000077b450 000000000237b6c0 c00000000077b6c0
GPR24: c00000000069a5a0 0000000002700000 c0000000009b0000 0000000000000000
GPR28: cf000000001f8000 cf00000001000000 0000000001000000 cf00000000000000
NIP [c000000000774b88] .vmemmap_populate+0xbc/0x100
LR [c000000000774b80] .vmemmap_populate+0xb4/0x100
Call Trace:
[c0000000008f7bd0] [c000000000774b80] .vmemmap_populate+0xb4/0x100 (unreliable)
[c0000000008f7c70] [c0000000007757e4] .sparse_mem_map_populate+0x38/0x5c
[c0000000008f7d00] [c000000000762f14] .sparse_early_mem_map_alloc+0x54/0x94
[c0000000008f7d90] [c000000000763348] .sparse_init+0x1e8/0x224
[c0000000008f7e50] [c00000000074f428] .setup_arch+0x1ac/0x218
[c0000000008f7ee0] [c0000000007466bc] .start_kernel+0xe0/0x414
[c0000000008f7f90] [c000000000008594] .start_here_common+0x54/0xc0
Instruction dump:
7fe3fb78 7ca02a14 4082000c 3860fff4 48000040 e9228980 e9628988 e8e90002
e90b0002 4b8b712d 60000000 78630fe0 <0b030000> 7ffff214 7fbdf214 7fbfe040
---[ end trace 31fd0ba7d8756001 ]---
Kernel panic - not syncing: Attempted to kill the idle task!
--
Thanks & Regards,
Kamalesh Babulal,
Linux Technology Center,
IBM, ISTL.
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [BUG] 2.6.25-rc8-mm1 kernel panic while bootup on powerpc
2008-04-02 17:09 ` Kamalesh Babulal
@ 2008-04-02 18:15 ` Badari Pulavarty
0 siblings, 0 replies; 10+ messages in thread
From: Badari Pulavarty @ 2008-04-02 18:15 UTC (permalink / raw)
To: Kamalesh Babulal; +Cc: linuxppc-dev, Andrew Morton, lkml, Balbir Singh
On Wed, 2008-04-02 at 22:39 +0530, Kamalesh Babulal wrote:
> Michael Ellerman wrote:
> > On Wed, 2008-04-02 at 12:38 +0530, Kamalesh Babulal wrote:
> >> Andrew Morton wrote:
> >>> On Wed, 02 Apr 2008 11:55:36 +0530 Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> wrote:
> >>>
> >>>> Hi Andrew,
> >>>>
> >>>> The 2.6.25-rc8-mm1 kernel panic's while bootup on the power machine(s).
> >>>>
> >>>> [ 0.000000] ------------[ cut here ]------------
> >>>> [ 0.000000] kernel BUG at arch/powerpc/mm/init_64.c:240!
> >>>> [ 0.000000] Oops: Exception in kernel mode, sig: 5 [#1]
> >>>> [ 0.000000] SMP NR_CPUS=32 NUMA PowerMac
> >>>> [ 0.000000] Modules linked in:
> >>>> [ 0.000000] NIP: c0000000003d1dcc LR: c0000000003d1dc4 CTR: c00000000002b6ac
> >>>> [ 0.000000] REGS: c00000000049b960 TRAP: 0700 Not tainted (2.6.25-rc8-mm1-autokern1)
> >>>> [ 0.000000] MSR: 9000000000021032 <ME,IR,DR> CR: 44000088 XER: 20000000
> >>>> [ 0.000000] TASK = c0000000003f9c90[0] 'swapper' THREAD: c000000000498000 CPU: 0
> >>>> [ 0.000000] GPR00: c0000000003d1dc4 c00000000049bbe0 c0000000004989d0 0000000000000001
> >>>> [ 0.000000] GPR04: d59aca40f0000000 000000000b000000 0000000000000010 0000000000000000
> >>>> [ 0.000000] GPR08: 0000000000000004 0000000000000001 c00000027e520800 c0000000004bf0f0
> >>>> [ 0.000000] GPR12: c0000000004bf020 c0000000003fa900 0000000000000000 0000000000000000
> >>>> [ 0.000000] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> >>>> [ 0.000000] GPR20: 0000000000000000 0000000000000000 0000000000000000 4000000001400000
> >>>> [ 0.000000] GPR24: 00000000017d64b0 c0000000003d6250 0000000000000000 c000000000504000
> >>>> [ 0.000000] GPR28: 0000000000000000 cf000000001f8000 0000000001000000 cf00000000000000
> >>>> [ 0.000000] NIP [c0000000003d1dcc] .vmemmap_populate+0xb8/0xf4
> >>>> [ 0.000000] LR [c0000000003d1dc4] .vmemmap_populate+0xb0/0xf4
> >>>> [ 0.000000] Call Trace:
> >>>> [ 0.000000] [c00000000049bbe0] [c0000000003d1dc4] .vmemmap_populate+0xb0/0xf4 (unreliable)
> >>>> [ 0.000000] [c00000000049bc70] [c0000000003d2ee8] .sparse_mem_map_populate+0x38/0x60
> >>>> [ 0.000000] [c00000000049bd00] [c0000000003c242c] .sparse_early_mem_map_alloc+0x54/0x94
> >>>> [ 0.000000] [c00000000049bd90] [c0000000003c250c] .sparse_init+0xa0/0x20c
> >>>> [ 0.000000] [c00000000049be50] [c0000000003ab7d0] .setup_arch+0x1ac/0x218
> >>>> [ 0.000000] [c00000000049bee0] [c0000000003a36ac] .start_kernel+0xe0/0x3fc
> >>>> [ 0.000000] [c00000000049bf90] [c000000000008594] .start_here_common+0x54/0xc0
> >>>> [ 0.000000] Instruction dump:
> >>>> [ 0.000000] 7fe3fb78 7ca02a14 4082000c 3860fff4 4800003c e92289c8 e96289c0 e9090002
> >>>> [ 0.000000] e8eb0002 4bc575cd 60000000 78630fe0 <0b030000> 7ffff214 7fbfe840 7fe3fb78
> >>>> [ 0.000000] ---[ end trace 31fd0ba7d8756001 ]---
> >>>> [ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
> >>>>
> >>> int __meminit vmemmap_populate(struct page *start_page,
> >>> unsigned long nr_pages, int node)
> >>> {
> >>> unsigned long mode_rw;
> >>> unsigned long start = (unsigned long)start_page;
> >>> unsigned long end = (unsigned long)(start_page + nr_pages);
> >>> unsigned long page_size = 1 << mmu_psize_defs[mmu_linear_psize].shift;
> >>>
> >>> mode_rw = _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_COHERENT | PP_RWXX;
> >>>
> >>> /* Align to the page size of the linear mapping. */
> >>> start = _ALIGN_DOWN(start, page_size);
> >>>
> >>> for (; start < end; start += page_size) {
> >>> int mapped;
> >>> void *p;
> >>>
> >>> if (vmemmap_populated(start, page_size))
> >>> continue;
> >>>
> >>> p = vmemmap_alloc_block(page_size, node);
> >>> if (!p)
> >>> return -ENOMEM;
> >>>
> >>> pr_debug("vmemmap %08lx allocated at %p, physical %08lx.\n",
> >>> start, p, __pa(p));
> >>>
> >>> mapped = htab_bolt_mapping(start, start + page_size,
> >>> __pa(p), mode_rw, mmu_linear_psize,
> >>> mmu_kernel_ssize);
> >>> =====> BUG_ON(mapped < 0);
> >>> }
> >>>
> >>> return 0;
> >>> }
> >>>
> >>> Beats me. pseries? Badari has been diddling with the bolted memory code
> >>> in git-powerpc...
> >> One of the machines is the Power5 and another is PowerMac G5, on which the
> >> same kernel panic is seen.
> >
> > Can you enable DEBUG_LOW in arch/powerpc/platforms/pseries/lpar.c, that
> > should show what's happening in hpte_insert().
> >
> > cheers
> >
> Just define DEBUG_LOW did not fetch and debug information, so added some printk to
> htab_bolt_mapping () and pSeries_lpar_hpte_insert ()
>
> [boot]0012 Setup Arch
> htab_bolt_mapping (vstart cf00000000000000, vend cf00000001000000, pstart 3000000,mode 190, psize 4, ssize 0)
> htab_bolt_mapping: calling c000000000888f00
> _hpte_insert(group=252078, va=d59aca40f0000000, pa=0000000003000000, rflags=194, vflags=10, psize=4 ssize=0)
> htab_bolt_mapping (vstart cf00000000000000, vend cf00000001000000, pstart 4000000,mode 190, psize 4, ssize 0)
> htab_bolt_mapping: calling c000000000888f00
> _hpte_insert(group=252078, va=d59aca40f0000000, pa=0000000004000000, rflags=194, vflags=10, psize=4 ssize=0)
> htab_bolt_mapping (vstart cf00000000000000, vend cf00000001000000, pstart 5000000,mode 190, psize 4, ssize 0)
> htab_bolt_mapping: calling c000000000888f00
> _hpte_insert(group=252078, va=d59aca40f0000000, pa=0000000005000000, rflags=194, vflags=10, psize=4 ssize=0)
> htab_bolt_mapping (vstart cf00000000000000, vend cf00000001000000, pstart 6000000,mode 190, psize 4, ssize 0)
> htab_bolt_mapping: calling c000000000888f00
> _hpte_insert(group=252078, va=d59aca40f0000000, pa=0000000006000000, rflags=194, vflags=10, psize=4 ssize=0)
> htab_bolt_mapping (vstart cf00000000000000, vend cf00000001000000, pstart 8000000,mode 190, psize 4, ssize 0)
> htab_bolt_mapping: calling c000000000888f00
> _hpte_insert(group=252078, va=d59aca40f0000000, pa=0000000008000000, rflags=194, vflags=10, psize=4 ssize=0)
> htab_bolt_mapping (vstart cf00000000000000, vend cf00000001000000, pstart 9000000,mode 190, psize 4, ssize 0)
> htab_bolt_mapping: calling c000000000888f00
> _hpte_insert(group=252078, va=d59aca40f0000000, pa=0000000009000000, rflags=194, vflags=10, psize=4 ssize=0)
> htab_bolt_mapping (vstart cf00000000000000, vend cf00000001000000, pstart a000000,mode 190, psize 4, ssize 0)
> htab_bolt_mapping: calling c000000000888f00
> _hpte_insert(group=252078, va=d59aca40f0000000, pa=000000000a000000, rflags=194, vflags=10, psize=4 ssize=0)
> htab_bolt_mapping (vstart cf00000000000000, vend cf00000001000000, pstart b000000,mode 190, psize 4, ssize 0)
> htab_bolt_mapping: calling c000000000888f00
> _hpte_insert(group=252078, va=d59aca40f0000000, pa=000000000b000000, rflags=194, vflags=10, psize=4 ssize=0)
> htab_bolt_mapping (vstart cf00000000000000, vend cf00000001000000, pstart c000000,mode 190, psize 4, ssize 0)
> htab_bolt_mapping: calling c000000000888f00
> _hpte_insert(group=252078, va=d59aca40f0000000, pa=000000000c000000, rflags=194, vflags=10, psize=4 ssize=0)
>
> ------------[ cut here ]------------
> kernel BUG at arch/powerpc/mm/init_64.c:240!
> Oops: Exception in kernel mode, sig: 5 [#1]
> SMP NR_CPUS=128 NUMA pSeries
> Modules linked in:
> NIP: c000000000774b88 LR: c000000000774b80 CTR: 0000000000000000
> REGS: c0000000008f7950 TRAP: 0700 Not tainted (2.6.25-rc8-mm1-autotest)
> MSR: 8000000000021032 <ME,IR,DR> CR: 24000088 XER: 00000001
> TASK = c0000000007dffd0[0] 'swapper' THREAD: c0000000008f4000 CPU: 0
>
> GPR00: c000000000774b80 c0000000008f7bd0 c0000000008f6c00 0000000000000001
> GPR04: fffffffffffffffa 000000000000005f 000000000000005e 0000000000000477
> GPR08: 00000009b346bb78 8000000006520800 fffffffffffffffa ffffffffffffffff
> GPR12: 0000000024000082 c0000000007e0980 0000000000000000 c00000000069ab58
> GPR16: 4000000001c00000 c0000000006993e8 0000000000000000 00000000002b1000
> GPR20: 000000000237b450 c00000000077b450 000000000237b6c0 c00000000077b6c0
> GPR24: c00000000069a5a0 0000000002700000 c0000000009b0000 0000000000000000
> GPR28: cf000000001f8000 cf00000001000000 0000000001000000 cf00000000000000
>
> NIP [c000000000774b88] .vmemmap_populate+0xbc/0x100
> LR [c000000000774b80] .vmemmap_populate+0xb4/0x100
>
> Call Trace:
> [c0000000008f7bd0] [c000000000774b80] .vmemmap_populate+0xb4/0x100 (unreliable)
> [c0000000008f7c70] [c0000000007757e4] .sparse_mem_map_populate+0x38/0x5c
> [c0000000008f7d00] [c000000000762f14] .sparse_early_mem_map_alloc+0x54/0x94
> [c0000000008f7d90] [c000000000763348] .sparse_init+0x1e8/0x224
> [c0000000008f7e50] [c00000000074f428] .setup_arch+0x1ac/0x218
> [c0000000008f7ee0] [c0000000007466bc] .start_kernel+0xe0/0x414
> [c0000000008f7f90] [c000000000008594] .start_here_common+0x54/0xc0
>
> Instruction dump:
> 7fe3fb78 7ca02a14 4082000c 3860fff4 48000040 e9228980 e9628988 e8e90002
> e90b0002 4b8b712d 60000000 78630fe0 <0b030000> 7ffff214 7fbdf214 7fbfe040
> ---[ end trace 31fd0ba7d8756001 ]---
> Kernel panic - not syncing: Attempted to kill the idle task!
>
Kamalesh,
With your config, I am able to reproduce the problem. I haven't touched
that part of code. I can take a look at it. It looks like we are trying
to create mapping for same "vaddr" multiple times and we get failures
after few creates. I am not sure why we are trying to create so many
times with same vaddr.
Thanks,
Badari
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [BUG] 2.6.25-rc8-mm1 kernel panic while bootup on powerpc
2008-04-02 7:17 ` Michael Ellerman
2008-04-02 17:09 ` Kamalesh Babulal
@ 2008-04-02 19:22 ` Badari Pulavarty
2008-04-02 21:57 ` Yinghai Lu
2008-04-02 22:24 ` Yinghai Lu
1 sibling, 2 replies; 10+ messages in thread
From: Badari Pulavarty @ 2008-04-02 19:22 UTC (permalink / raw)
To: michael, yhlu.kernel
Cc: linuxppc-dev, Andrew Morton, Balbir Singh, lkml, Kamalesh Babulal
On Wed, 2008-04-02 at 18:17 +1100, Michael Ellerman wrote:
> On Wed, 2008-04-02 at 12:38 +0530, Kamalesh Babulal wrote:
> > Andrew Morton wrote:
> > > On Wed, 02 Apr 2008 11:55:36 +0530 Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> wrote:
> > >
> > >> Hi Andrew,
> > >>
> > >> The 2.6.25-rc8-mm1 kernel panic's while bootup on the power machine(s).
> > >>
> > >> [ 0.000000] ------------[ cut here ]------------
> > >> [ 0.000000] kernel BUG at arch/powerpc/mm/init_64.c:240!
> > >> [ 0.000000] Oops: Exception in kernel mode, sig: 5 [#1]
> > >> [ 0.000000] SMP NR_CPUS=32 NUMA PowerMac
> > >> [ 0.000000] Modules linked in:
> > >> [ 0.000000] NIP: c0000000003d1dcc LR: c0000000003d1dc4 CTR: c00000000002b6ac
> > >> [ 0.000000] REGS: c00000000049b960 TRAP: 0700 Not tainted (2.6.25-rc8-mm1-autokern1)
> > >> [ 0.000000] MSR: 9000000000021032 <ME,IR,DR> CR: 44000088 XER: 20000000
> > >> [ 0.000000] TASK = c0000000003f9c90[0] 'swapper' THREAD: c000000000498000 CPU: 0
> > >> [ 0.000000] GPR00: c0000000003d1dc4 c00000000049bbe0 c0000000004989d0 0000000000000001
> > >> [ 0.000000] GPR04: d59aca40f0000000 000000000b000000 0000000000000010 0000000000000000
> > >> [ 0.000000] GPR08: 0000000000000004 0000000000000001 c00000027e520800 c0000000004bf0f0
> > >> [ 0.000000] GPR12: c0000000004bf020 c0000000003fa900 0000000000000000 0000000000000000
> > >> [ 0.000000] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> > >> [ 0.000000] GPR20: 0000000000000000 0000000000000000 0000000000000000 4000000001400000
> > >> [ 0.000000] GPR24: 00000000017d64b0 c0000000003d6250 0000000000000000 c000000000504000
> > >> [ 0.000000] GPR28: 0000000000000000 cf000000001f8000 0000000001000000 cf00000000000000
> > >> [ 0.000000] NIP [c0000000003d1dcc] .vmemmap_populate+0xb8/0xf4
> > >> [ 0.000000] LR [c0000000003d1dc4] .vmemmap_populate+0xb0/0xf4
> > >> [ 0.000000] Call Trace:
> > >> [ 0.000000] [c00000000049bbe0] [c0000000003d1dc4] .vmemmap_populate+0xb0/0xf4 (unreliable)
> > >> [ 0.000000] [c00000000049bc70] [c0000000003d2ee8] .sparse_mem_map_populate+0x38/0x60
> > >> [ 0.000000] [c00000000049bd00] [c0000000003c242c] .sparse_early_mem_map_alloc+0x54/0x94
> > >> [ 0.000000] [c00000000049bd90] [c0000000003c250c] .sparse_init+0xa0/0x20c
> > >> [ 0.000000] [c00000000049be50] [c0000000003ab7d0] .setup_arch+0x1ac/0x218
> > >> [ 0.000000] [c00000000049bee0] [c0000000003a36ac] .start_kernel+0xe0/0x3fc
> > >> [ 0.000000] [c00000000049bf90] [c000000000008594] .start_here_common+0x54/0xc0
> > >> [ 0.000000] Instruction dump:
> > >> [ 0.000000] 7fe3fb78 7ca02a14 4082000c 3860fff4 4800003c e92289c8 e96289c0 e9090002
> > >> [ 0.000000] e8eb0002 4bc575cd 60000000 78630fe0 <0b030000> 7ffff214 7fbfe840 7fe3fb78
> > >> [ 0.000000] ---[ end trace 31fd0ba7d8756001 ]---
> > >> [ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
> > >>
> > >
> > > int __meminit vmemmap_populate(struct page *start_page,
> > > unsigned long nr_pages, int node)
> > > {
> > > unsigned long mode_rw;
> > > unsigned long start = (unsigned long)start_page;
> > > unsigned long end = (unsigned long)(start_page + nr_pages);
> > > unsigned long page_size = 1 << mmu_psize_defs[mmu_linear_psize].shift;
> > >
> > > mode_rw = _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_COHERENT | PP_RWXX;
> > >
> > > /* Align to the page size of the linear mapping. */
> > > start = _ALIGN_DOWN(start, page_size);
> > >
> > > for (; start < end; start += page_size) {
> > > int mapped;
> > > void *p;
> > >
> > > if (vmemmap_populated(start, page_size))
> > > continue;
> > >
> > > p = vmemmap_alloc_block(page_size, node);
> > > if (!p)
> > > return -ENOMEM;
> > >
> > > pr_debug("vmemmap %08lx allocated at %p, physical %08lx.\n",
> > > start, p, __pa(p));
> > >
> > > mapped = htab_bolt_mapping(start, start + page_size,
> > > __pa(p), mode_rw, mmu_linear_psize,
> > > mmu_kernel_ssize);
> > > =====> BUG_ON(mapped < 0);
> > > }
> > >
> > > return 0;
> > > }
> > >
> > > Beats me. pseries? Badari has been diddling with the bolted memory code
> > > in git-powerpc...
> >
> > One of the machines is the Power5 and another is PowerMac G5, on which the
> > same kernel panic is seen.
>
> Can you enable DEBUG_LOW in arch/powerpc/platforms/pseries/lpar.c, that
> should show what's happening in hpte_insert().
>
> cheers
>
Okay. Found it.
Root cause is:
mm-make-mem_map-allocation-continuous.patch
and its friends in -mm.
You have to call sparse_init_one_section() on each pmap and usemap
as we allocate - since valid_section() depends on it (which is needed
by vmemmap_populate() to check if the section is populated or not).
On ppc, we need to call htab_bolted_mapping() on each section and
we need to skip existing sections.
These patches tried to group all allocations together and then later
calls sparse_init_one_section() - which is not good :(
Please let me know, if its doesn't make sense - I will try to explain
better :)
Thanks,
Badari
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [BUG] 2.6.25-rc8-mm1 kernel panic while bootup on powerpc
2008-04-02 19:22 ` Badari Pulavarty
@ 2008-04-02 21:57 ` Yinghai Lu
2008-04-02 22:24 ` Yinghai Lu
1 sibling, 0 replies; 10+ messages in thread
From: Yinghai Lu @ 2008-04-02 21:57 UTC (permalink / raw)
To: Badari Pulavarty
Cc: lkml, Kamalesh Babulal, linuxppc-dev, Andrew Morton, Balbir Singh
On Wed, Apr 2, 2008 at 12:22 PM, Badari Pulavarty <pbadari@us.ibm.com> wrote:
>
> On Wed, 2008-04-02 at 18:17 +1100, Michael Ellerman wrote:
> > On Wed, 2008-04-02 at 12:38 +0530, Kamalesh Babulal wrote:
> > > Andrew Morton wrote:
> > > > On Wed, 02 Apr 2008 11:55:36 +0530 Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> wrote:
> > > >
> > > >> Hi Andrew,
> > > >>
> > > >> The 2.6.25-rc8-mm1 kernel panic's while bootup on the power machine(s).
> > > >>
> > > >> [ 0.000000] ------------[ cut here ]------------
> > > >> [ 0.000000] kernel BUG at arch/powerpc/mm/init_64.c:240!
> > > >> [ 0.000000] Oops: Exception in kernel mode, sig: 5 [#1]
> > > >> [ 0.000000] SMP NR_CPUS=32 NUMA PowerMac
> > > >> [ 0.000000] Modules linked in:
> > > >> [ 0.000000] NIP: c0000000003d1dcc LR: c0000000003d1dc4 CTR: c00000000002b6ac
> > > >> [ 0.000000] REGS: c00000000049b960 TRAP: 0700 Not tainted (2.6.25-rc8-mm1-autokern1)
> > > >> [ 0.000000] MSR: 9000000000021032 <ME,IR,DR> CR: 44000088 XER: 20000000
> > > >> [ 0.000000] TASK = c0000000003f9c90[0] 'swapper' THREAD: c000000000498000 CPU: 0
> > > >> [ 0.000000] GPR00: c0000000003d1dc4 c00000000049bbe0 c0000000004989d0 0000000000000001
> > > >> [ 0.000000] GPR04: d59aca40f0000000 000000000b000000 0000000000000010 0000000000000000
> > > >> [ 0.000000] GPR08: 0000000000000004 0000000000000001 c00000027e520800 c0000000004bf0f0
> > > >> [ 0.000000] GPR12: c0000000004bf020 c0000000003fa900 0000000000000000 0000000000000000
> > > >> [ 0.000000] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> > > >> [ 0.000000] GPR20: 0000000000000000 0000000000000000 0000000000000000 4000000001400000
> > > >> [ 0.000000] GPR24: 00000000017d64b0 c0000000003d6250 0000000000000000 c000000000504000
> > > >> [ 0.000000] GPR28: 0000000000000000 cf000000001f8000 0000000001000000 cf00000000000000
> > > >> [ 0.000000] NIP [c0000000003d1dcc] .vmemmap_populate+0xb8/0xf4
> > > >> [ 0.000000] LR [c0000000003d1dc4] .vmemmap_populate+0xb0/0xf4
> > > >> [ 0.000000] Call Trace:
> > > >> [ 0.000000] [c00000000049bbe0] [c0000000003d1dc4] .vmemmap_populate+0xb0/0xf4 (unreliable)
> > > >> [ 0.000000] [c00000000049bc70] [c0000000003d2ee8] .sparse_mem_map_populate+0x38/0x60
> > > >> [ 0.000000] [c00000000049bd00] [c0000000003c242c] .sparse_early_mem_map_alloc+0x54/0x94
> > > >> [ 0.000000] [c00000000049bd90] [c0000000003c250c] .sparse_init+0xa0/0x20c
> > > >> [ 0.000000] [c00000000049be50] [c0000000003ab7d0] .setup_arch+0x1ac/0x218
> > > >> [ 0.000000] [c00000000049bee0] [c0000000003a36ac] .start_kernel+0xe0/0x3fc
> > > >> [ 0.000000] [c00000000049bf90] [c000000000008594] .start_here_common+0x54/0xc0
> > > >> [ 0.000000] Instruction dump:
> > > >> [ 0.000000] 7fe3fb78 7ca02a14 4082000c 3860fff4 4800003c e92289c8 e96289c0 e9090002
> > > >> [ 0.000000] e8eb0002 4bc575cd 60000000 78630fe0 <0b030000> 7ffff214 7fbfe840 7fe3fb78
> > > >> [ 0.000000] ---[ end trace 31fd0ba7d8756001 ]---
> > > >> [ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
> > > >>
> > > >
> > > > int __meminit vmemmap_populate(struct page *start_page,
> > > > unsigned long nr_pages, int node)
> > > > {
> > > > unsigned long mode_rw;
> > > > unsigned long start = (unsigned long)start_page;
> > > > unsigned long end = (unsigned long)(start_page + nr_pages);
> > > > unsigned long page_size = 1 << mmu_psize_defs[mmu_linear_psize].shift;
> > > >
> > > > mode_rw = _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_COHERENT | PP_RWXX;
> > > >
> > > > /* Align to the page size of the linear mapping. */
> > > > start = _ALIGN_DOWN(start, page_size);
> > > >
> > > > for (; start < end; start += page_size) {
> > > > int mapped;
> > > > void *p;
> > > >
> > > > if (vmemmap_populated(start, page_size))
> > > > continue;
> > > >
> > > > p = vmemmap_alloc_block(page_size, node);
> > > > if (!p)
> > > > return -ENOMEM;
> > > >
> > > > pr_debug("vmemmap %08lx allocated at %p, physical %08lx.\n",
> > > > start, p, __pa(p));
> > > >
> > > > mapped = htab_bolt_mapping(start, start + page_size,
> > > > __pa(p), mode_rw, mmu_linear_psize,
> > > > mmu_kernel_ssize);
> > > > =====> BUG_ON(mapped < 0);
> > > > }
> > > >
> > > > return 0;
> > > > }
> > > >
> > > > Beats me. pseries? Badari has been diddling with the bolted memory code
> > > > in git-powerpc...
> > >
> > > One of the machines is the Power5 and another is PowerMac G5, on which the
> > > same kernel panic is seen.
> >
> > Can you enable DEBUG_LOW in arch/powerpc/platforms/pseries/lpar.c, that
> > should show what's happening in hpte_insert().
> >
> > cheers
> >
>
> Okay. Found it.
>
> Root cause is:
>
> mm-make-mem_map-allocation-continuous.patch
> and its friends in -mm.
>
> You have to call sparse_init_one_section() on each pmap and usemap
> as we allocate - since valid_section() depends on it (which is needed
> by vmemmap_populate() to check if the section is populated or not).
> On ppc, we need to call htab_bolted_mapping() on each section and
> we need to skip existing sections.
>
> These patches tried to group all allocations together and then later
> calls sparse_init_one_section() - which is not good :(
>
will send you patch workaround it...
YH
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [BUG] 2.6.25-rc8-mm1 kernel panic while bootup on powerpc
2008-04-02 19:22 ` Badari Pulavarty
2008-04-02 21:57 ` Yinghai Lu
@ 2008-04-02 22:24 ` Yinghai Lu
1 sibling, 0 replies; 10+ messages in thread
From: Yinghai Lu @ 2008-04-02 22:24 UTC (permalink / raw)
To: Badari Pulavarty
Cc: lkml, Kamalesh Babulal, linuxppc-dev, Andrew Morton, Balbir Singh
On Wed, Apr 2, 2008 at 12:22 PM, Badari Pulavarty <pbadari@us.ibm.com> wrote:
>
> On Wed, 2008-04-02 at 18:17 +1100, Michael Ellerman wrote:
> > On Wed, 2008-04-02 at 12:38 +0530, Kamalesh Babulal wrote:
> > > Andrew Morton wrote:
> > > > On Wed, 02 Apr 2008 11:55:36 +0530 Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> wrote:
> > > >
> > > >> Hi Andrew,
> > > >>
> > > >> The 2.6.25-rc8-mm1 kernel panic's while bootup on the power machine(s).
> > > >>
> > > >> [ 0.000000] ------------[ cut here ]------------
> > > >> [ 0.000000] kernel BUG at arch/powerpc/mm/init_64.c:240!
> > > >> [ 0.000000] Oops: Exception in kernel mode, sig: 5 [#1]
> > > >> [ 0.000000] SMP NR_CPUS=32 NUMA PowerMac
> > > >> [ 0.000000] Modules linked in:
> > > >> [ 0.000000] NIP: c0000000003d1dcc LR: c0000000003d1dc4 CTR: c00000000002b6ac
> > > >> [ 0.000000] REGS: c00000000049b960 TRAP: 0700 Not tainted (2.6.25-rc8-mm1-autokern1)
> > > >> [ 0.000000] MSR: 9000000000021032 <ME,IR,DR> CR: 44000088 XER: 20000000
> > > >> [ 0.000000] TASK = c0000000003f9c90[0] 'swapper' THREAD: c000000000498000 CPU: 0
> > > >> [ 0.000000] GPR00: c0000000003d1dc4 c00000000049bbe0 c0000000004989d0 0000000000000001
> > > >> [ 0.000000] GPR04: d59aca40f0000000 000000000b000000 0000000000000010 0000000000000000
> > > >> [ 0.000000] GPR08: 0000000000000004 0000000000000001 c00000027e520800 c0000000004bf0f0
> > > >> [ 0.000000] GPR12: c0000000004bf020 c0000000003fa900 0000000000000000 0000000000000000
> > > >> [ 0.000000] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> > > >> [ 0.000000] GPR20: 0000000000000000 0000000000000000 0000000000000000 4000000001400000
> > > >> [ 0.000000] GPR24: 00000000017d64b0 c0000000003d6250 0000000000000000 c000000000504000
> > > >> [ 0.000000] GPR28: 0000000000000000 cf000000001f8000 0000000001000000 cf00000000000000
> > > >> [ 0.000000] NIP [c0000000003d1dcc] .vmemmap_populate+0xb8/0xf4
> > > >> [ 0.000000] LR [c0000000003d1dc4] .vmemmap_populate+0xb0/0xf4
> > > >> [ 0.000000] Call Trace:
> > > >> [ 0.000000] [c00000000049bbe0] [c0000000003d1dc4] .vmemmap_populate+0xb0/0xf4 (unreliable)
> > > >> [ 0.000000] [c00000000049bc70] [c0000000003d2ee8] .sparse_mem_map_populate+0x38/0x60
> > > >> [ 0.000000] [c00000000049bd00] [c0000000003c242c] .sparse_early_mem_map_alloc+0x54/0x94
> > > >> [ 0.000000] [c00000000049bd90] [c0000000003c250c] .sparse_init+0xa0/0x20c
> > > >> [ 0.000000] [c00000000049be50] [c0000000003ab7d0] .setup_arch+0x1ac/0x218
> > > >> [ 0.000000] [c00000000049bee0] [c0000000003a36ac] .start_kernel+0xe0/0x3fc
> > > >> [ 0.000000] [c00000000049bf90] [c000000000008594] .start_here_common+0x54/0xc0
> > > >> [ 0.000000] Instruction dump:
> > > >> [ 0.000000] 7fe3fb78 7ca02a14 4082000c 3860fff4 4800003c e92289c8 e96289c0 e9090002
> > > >> [ 0.000000] e8eb0002 4bc575cd 60000000 78630fe0 <0b030000> 7ffff214 7fbfe840 7fe3fb78
> > > >> [ 0.000000] ---[ end trace 31fd0ba7d8756001 ]---
> > > >> [ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
> > > >>
> > > >
> > > > int __meminit vmemmap_populate(struct page *start_page,
> > > > unsigned long nr_pages, int node)
> > > > {
> > > > unsigned long mode_rw;
> > > > unsigned long start = (unsigned long)start_page;
> > > > unsigned long end = (unsigned long)(start_page + nr_pages);
> > > > unsigned long page_size = 1 << mmu_psize_defs[mmu_linear_psize].shift;
> > > >
> > > > mode_rw = _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_COHERENT | PP_RWXX;
> > > >
> > > > /* Align to the page size of the linear mapping. */
> > > > start = _ALIGN_DOWN(start, page_size);
> > > >
> > > > for (; start < end; start += page_size) {
> > > > int mapped;
> > > > void *p;
> > > >
> > > > if (vmemmap_populated(start, page_size))
> > > > continue;
> > > >
> > > > p = vmemmap_alloc_block(page_size, node);
> > > > if (!p)
> > > > return -ENOMEM;
> > > >
> > > > pr_debug("vmemmap %08lx allocated at %p, physical %08lx.\n",
> > > > start, p, __pa(p));
> > > >
> > > > mapped = htab_bolt_mapping(start, start + page_size,
> > > > __pa(p), mode_rw, mmu_linear_psize,
> > > > mmu_kernel_ssize);
> > > > =====> BUG_ON(mapped < 0);
> > > > }
> > > >
> > > > return 0;
> > > > }
> > > >
> > > > Beats me. pseries? Badari has been diddling with the bolted memory code
> > > > in git-powerpc...
> > >
> > > One of the machines is the Power5 and another is PowerMac G5, on which the
> > > same kernel panic is seen.
> >
> > Can you enable DEBUG_LOW in arch/powerpc/platforms/pseries/lpar.c, that
> > should show what's happening in hpte_insert().
> >
> > cheers
> >
>
> Okay. Found it.
>
> Root cause is:
>
> mm-make-mem_map-allocation-continuous.patch
> and its friends in -mm.
>
> You have to call sparse_init_one_section() on each pmap and usemap
> as we allocate - since valid_section() depends on it (which is needed
> by vmemmap_populate() to check if the section is populated or not).
> On ppc, we need to call htab_bolted_mapping() on each section and
> we need to skip existing sections.
>
> These patches tried to group all allocations together and then later
> calls sparse_init_one_section() - which is not good :(
>
http://lkml.org/lkml/2008/4/2/592
Thanks
YH
^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [BUG] 2.6.25-rc8-mm1 kernel panic while bootup on powerpc
2008-04-02 6:39 ` Andrew Morton
2008-04-02 7:08 ` Kamalesh Babulal
@ 2008-04-04 9:24 ` Andy Whitcroft
1 sibling, 0 replies; 10+ messages in thread
From: Andy Whitcroft @ 2008-04-04 9:24 UTC (permalink / raw)
To: Andrew Morton
Cc: linuxppc-dev, Balbir Singh, Badari Pulavarty, linux-kernel,
Kamalesh Babulal
On Tue, Apr 01, 2008 at 11:39:09PM -0700, Andrew Morton wrote:
> On Wed, 02 Apr 2008 11:55:36 +0530 Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> wrote:
>
> > Hi Andrew,
> >
> > The 2.6.25-rc8-mm1 kernel panic's while bootup on the power machine(s).
> >
> > [ 0.000000] ------------[ cut here ]------------
> > [ 0.000000] kernel BUG at arch/powerpc/mm/init_64.c:240!
> > [ 0.000000] Oops: Exception in kernel mode, sig: 5 [#1]
> > [ 0.000000] SMP NR_CPUS=32 NUMA PowerMac
> > [ 0.000000] Modules linked in:
> > [ 0.000000] NIP: c0000000003d1dcc LR: c0000000003d1dc4 CTR: c00000000002b6ac
> > [ 0.000000] REGS: c00000000049b960 TRAP: 0700 Not tainted (2.6.25-rc8-mm1-autokern1)
> > [ 0.000000] MSR: 9000000000021032 <ME,IR,DR> CR: 44000088 XER: 20000000
> > [ 0.000000] TASK = c0000000003f9c90[0] 'swapper' THREAD: c000000000498000 CPU: 0
> > [ 0.000000] GPR00: c0000000003d1dc4 c00000000049bbe0 c0000000004989d0 0000000000000001
> > [ 0.000000] GPR04: d59aca40f0000000 000000000b000000 0000000000000010 0000000000000000
> > [ 0.000000] GPR08: 0000000000000004 0000000000000001 c00000027e520800 c0000000004bf0f0
> > [ 0.000000] GPR12: c0000000004bf020 c0000000003fa900 0000000000000000 0000000000000000
> > [ 0.000000] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000
> > [ 0.000000] GPR20: 0000000000000000 0000000000000000 0000000000000000 4000000001400000
> > [ 0.000000] GPR24: 00000000017d64b0 c0000000003d6250 0000000000000000 c000000000504000
> > [ 0.000000] GPR28: 0000000000000000 cf000000001f8000 0000000001000000 cf00000000000000
> > [ 0.000000] NIP [c0000000003d1dcc] .vmemmap_populate+0xb8/0xf4
> > [ 0.000000] LR [c0000000003d1dc4] .vmemmap_populate+0xb0/0xf4
> > [ 0.000000] Call Trace:
> > [ 0.000000] [c00000000049bbe0] [c0000000003d1dc4] .vmemmap_populate+0xb0/0xf4 (unreliable)
> > [ 0.000000] [c00000000049bc70] [c0000000003d2ee8] .sparse_mem_map_populate+0x38/0x60
> > [ 0.000000] [c00000000049bd00] [c0000000003c242c] .sparse_early_mem_map_alloc+0x54/0x94
> > [ 0.000000] [c00000000049bd90] [c0000000003c250c] .sparse_init+0xa0/0x20c
> > [ 0.000000] [c00000000049be50] [c0000000003ab7d0] .setup_arch+0x1ac/0x218
> > [ 0.000000] [c00000000049bee0] [c0000000003a36ac] .start_kernel+0xe0/0x3fc
> > [ 0.000000] [c00000000049bf90] [c000000000008594] .start_here_common+0x54/0xc0
> > [ 0.000000] Instruction dump:
> > [ 0.000000] 7fe3fb78 7ca02a14 4082000c 3860fff4 4800003c e92289c8 e96289c0 e9090002
> > [ 0.000000] e8eb0002 4bc575cd 60000000 78630fe0 <0b030000> 7ffff214 7fbfe840 7fe3fb78
> > [ 0.000000] ---[ end trace 31fd0ba7d8756001 ]---
> > [ 0.000000] Kernel panic - not syncing: Attempted to kill the idle task!
> >
>
> int __meminit vmemmap_populate(struct page *start_page,
> unsigned long nr_pages, int node)
> {
> unsigned long mode_rw;
> unsigned long start = (unsigned long)start_page;
> unsigned long end = (unsigned long)(start_page + nr_pages);
> unsigned long page_size = 1 << mmu_psize_defs[mmu_linear_psize].shift;
>
> mode_rw = _PAGE_ACCESSED | _PAGE_DIRTY | _PAGE_COHERENT | PP_RWXX;
>
> /* Align to the page size of the linear mapping. */
> start = _ALIGN_DOWN(start, page_size);
>
> for (; start < end; start += page_size) {
> int mapped;
> void *p;
>
> if (vmemmap_populated(start, page_size))
> continue;
>
> p = vmemmap_alloc_block(page_size, node);
> if (!p)
> return -ENOMEM;
>
> pr_debug("vmemmap %08lx allocated at %p, physical %08lx.\n",
> start, p, __pa(p));
>
> mapped = htab_bolt_mapping(start, start + page_size,
> __pa(p), mode_rw, mmu_linear_psize,
> mmu_kernel_ssize);
> =====> BUG_ON(mapped < 0);
> }
>
> return 0;
> }
>
> Beats me. pseries? Badari has been diddling with the bolted memory code
> in git-powerpc...
It does look like this is resolved with the patch below, if my testing
is to be believed (results out on TKO):
[PATCH] mm: allocate usemap at first instead of mem_map in sparse_init
From: Yinghai Lu <yhlu.kernel@gmail.com>
Andrew, I believe you just sucked that up into -mm.
-apw
^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2008-04-04 9:27 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz follow: Atom feed
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2008-04-02 6:25 ` [BUG] 2.6.25-rc8-mm1 kernel panic while bootup on powerpc Kamalesh Babulal
2008-04-02 6:39 ` Andrew Morton
2008-04-02 7:08 ` Kamalesh Babulal
2008-04-02 7:17 ` Michael Ellerman
2008-04-02 17:09 ` Kamalesh Babulal
2008-04-02 18:15 ` Badari Pulavarty
2008-04-02 19:22 ` Badari Pulavarty
2008-04-02 21:57 ` Yinghai Lu
2008-04-02 22:24 ` Yinghai Lu
2008-04-04 9:24 ` Andy Whitcroft
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