From: Sachin Sant <sachinp@in.ibm.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>,
linux-next@vger.kernel.org, linuxppc-dev@ozlabs.org
Subject: Re: Next July 29 : Hugetlb test failure (OOPS free_hugepte_range)
Date: Wed, 05 Aug 2009 16:13:03 +0530 [thread overview]
Message-ID: <4A796237.6070302@in.ibm.com> (raw)
In-Reply-To: <1248957028.1509.85.camel@pasglop>
Benjamin Herrenschmidt wrote:
> Thanks. I'll have a look next week. I think when I changed the indices
> I may have forgotten to update something.
>
Ben,
I can recreate this issue with today's next.
Let me know if i can help in any way to fix this issue.
Thanks
-Sachin
>> : ------------[ cut here ]------------
>> cpu 0x0: Vector: 700 (Program Check) at [c000000038923560]
>> pc: c0000000000486d4: .free_hugepte_range+0x68/0xa0
>> lr: c000000000048954: .hugetlb_free_pgd_range+0x248/0x38c
>> sp: c0000000389237e0
>> msr: 8000000000029032
>> current = 0xc00000003b1d7780
>> paca = 0xc000000001002400
>> pid = 2839, comm = readback
>> kernel BUG at /home/linux-2.6.31-rc4/arch/powerpc/include/asm/pgalloc.h:36!
>> enter ? for help
>> [c000000038923880] c000000000048954 .hugetlb_free_pgd_range+0x248/0x38c
>> [c000000038923970] c000000000165a48 .free_pgtables+0xa0/0x154
>> [c000000038923a30] c000000000167f78 .exit_mmap+0x13c/0x1cc
>> [c000000038923ae0] c0000000000997ec .mmput+0x68/0x14c
>> [c000000038923b70] c00000000009f1d4 .exit_mm+0x190/0x1b8
>> [c000000038923c20] c0000000000a16e8 .do_exit+0x214/0x784
>> [c000000038923d00] c0000000000a1d1c .do_group_exit+0xc4/0xf8
>> [c000000038923da0] c0000000000a1d7c .SyS_exit_group+0x2c/0x48
>> [c000000038923e30] c0000000000085b4 syscall_exit+0x0/0x40
>> --- Exception: c01 (System Call) at 000000000fe15038
>> SP (ffb8e030) is in userspace
>> 0:mon> e
>> cpu 0x0: Vector: 700 (Program Check) at [c000000038923560]
>> pc: c0000000000486d4: .free_hugepte_range+0x68/0xa0
>> lr: c000000000048954: .hugetlb_free_pgd_range+0x248/0x38c
>> sp: c0000000389237e0
>> msr: 8000000000029032
>> current = 0xc00000003b1d7780
>> paca = 0xc000000001002400
>> pid = 2839, comm = readback
>> kernel BUG at /home/linux-2.6.31-rc4/arch/powerpc/include/asm/pgalloc.h:36!
>> 0:mon> r
>> R00 = 0000000000000001 R16 = 0000000000000000
>> R01 = c0000000389237e0 R17 = 0000000000000001
>> R02 = c000000000f165a8 R18 = 000000003fffffff
>> R03 = c0000000014504d0 R19 = 0000000000000000
>> R04 = c000000039390001 R20 = 0000000000000000
>> R05 = 0000000000000007 R21 = 0000010000000000
>> R06 = 0000000000000000 R22 = 0000000040000000
>> R07 = 0000000040000000 R23 = c0000000014504d0
>> R08 = c00000003d708188 R24 = 000000003fffffff
>> R09 = c00000003eb40000 R25 = 0000000000000007
>> R10 = c00000003d708188 R26 = c00000003ebd41b8
>> R11 = 0000000000000018 R27 = c0000000014504d0
>> R12 = 0000000040000448 R28 = c00000003eb40018
>> R13 = c000000001002400 R29 = 0000000000000008
>> R14 = 00000000ffffffff R30 = 0000000040000000
>> R15 = 00000000ffffffff R31 = c0000000389237e0
>> pc = c0000000000486d4 .free_hugepte_range+0x68/0xa0
>> lr = c000000000048954 .hugetlb_free_pgd_range+0x248/0x38c
>> msr = 8000000000029032 cr = 20042444
>> ctr = 800000000000b6f4 xer = 0000000000000001 trap = 700
>> 0:mon>
>>
>> Line 36 of arch/powerpc/include/asm/pgalloc.h corresponds to
>>
>> BUG_ON(cachenum > PGF_CACHENUM_MASK);
>>
>> May be something to do with number of elements in huge_pgtable_cache_name ??
>>
>> Thanks
>> -Sachin
--
---------------------------------
Sachin Sant
IBM Linux Technology Center
India Systems and Technology Labs
Bangalore, India
---------------------------------
next prev parent reply other threads:[~2009-08-05 10:43 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20090729173611.b82478cd.sfr@canb.auug.org.au>
2009-07-29 15:04 ` Next July 29 : Hugetlb test failure (OOPS free_hugepte_range) Sachin Sant
2009-07-30 12:25 ` Sachin Sant
2009-07-30 12:30 ` Benjamin Herrenschmidt
2009-08-05 10:43 ` Sachin Sant [this message]
2009-08-06 3:52 ` Benjamin Herrenschmidt
2009-08-06 4:40 ` Sachin Sant
2009-08-05 14:35 ` Kumar Gala
2009-08-05 15:33 ` Sachin Sant
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