[uClinux-dev] BUG: scheduling while atomic
Greg Ungerer
gerg at snapgear.com
Fri Mar 30 02:00:25 EST 2007
Hi Arnon, Assaf,
I see one problem in the modules/ixp425/net-2.1/ixp400_eth.c code.
It is using the define CONFIG_ARCH_IXDPG425 for conditionals, it
should be CONFIG_MACH_IXDPG425.
At least everything seems to work fine with no preemption after
that is fixed.
Now with preempt enabled I get all sorts of oops if I have the
IXP425 ETHDB option enabled. But it seems to run clean if I
disable that. (You can disable it in the modules options config,
in the ixp400 driver section). Is that consistent with what
you see?
So it sure looks like a problem in the EthDB handling code.
Regards
Greg
Assaf Harel wrote:
> Greg, Arnon,
>
> Any solution for this matter?
> I'm having the same problem here.
>
> Assaf
>
> -----Original Message-----
> From: uclinux-dev-bounces at uclinux.org
> [mailto:uclinux-dev-bounces at uclinux.org] On Behalf Of Arnon Meydav
> Sent: Wednesday, March 21, 2007 10:36
> To: uClinux development list
> Subject: RE: [uClinux-dev] BUG: scheduling while atomic
>
>
> We are using:
> IPL_ixp400NpeLibrary-2_1.zip
> modules-csr2.1-20061012.patch
>
> Regarding the access library, I have 2 packages:
> BSD_ixp400AccessLibrary-2_1.zip
> BSD_ixp400AccessLibrary-2_1_1.zip
>
> Any known issues with these libraries?
> Thanks,
> - Arnon
>
> -----Original Message-----
> From: uclinux-dev-bounces at uclinux.org
> [mailto:uclinux-dev-bounces at uclinux.org] On Behalf Of Greg Ungerer
> Sent: Wednesday, March 21, 2007 06:36
> To: uClinux development list
> Subject: Re: [uClinux-dev] BUG: scheduling while atomic
>
> Hi Arnon,
>
> Arnon Meydav wrote:
>> I am running snapgear-3.4.0 with a preemptive 2.6 kernel, on a
>> montejade-like board (IXP425 CPU).
>> I get the following error message when I run some apps that access the
>
>> ethernet device, e.g. ifconfig:
>
> What version of the AccessLibrary are you using?
>
> Regards
> Greg
>
>
>
>
>> BUG: scheduling while atomic: ifconfig/0x00000001/802 [<c0022dc8>]
>> (dump_stack+0x0/0x14) from [<c01dd1c0>] (schedule+0x60/0x6b8)
>> [<c01dd160>] (schedule+0x0/0x6b8) from [<c01de5fc>]
>> (schedule_timeout+0x8c/0xbc)
>> [<c01de570>] (schedule_timeout+0x0/0xbc) from [<bf01c820>]
>> (ixOsalMutexLock+0x190/0x1b4 [ixp400])
>> r8 = C0E07E0C r7 = C021D740 r6 = FFFFA7C2 r5 = C0E06000
>> r4 = BF0344B8
>> [<bf01c690>] (ixOsalMutexLock+0x0/0x1b4 [ixp400]) from [<bf00e140>]
>> (ixEthAccMibIIStatsGetClear+0x1)
>> r7 = 00E07E0C r6 = 05200000 r5 = BF0344C0 r4 = 00000000
>> [<bf00e018>] (ixEthAccMibIIStatsGetClear+0x0/0x164 [ixp400]) from
>> [<bf09da28>] (0xbf09da28) [<bf09d9d0>] (0xbf09d9d0) from [<c0170e18>]
>> (dev_seq_show+0x4c/0x134)
>> r6 = C1BAFB60 r5 = C1BAFB60 r4 = C08E4000 [<c0170dcc>]
>> (dev_seq_show+0x0/0x134) from [<c0098328>]
>> (seq_read+0x26c/0x3a4)
>> r5 = 0000007B r4 = C08E4000
>> [<c00980bc>] (seq_read+0x0/0x3a4) from [<c0074244>]
>> (vfs_read+0xc4/0x17c) [<c0074180>] (vfs_read+0x0/0x17c) from
>> [<c00745d8>] (sys_read+0x4c/0x74)
>> r8 = 00000100 r7 = 00000000 r6 = C0E07F78 r5 = C02EF580
>> r4 = C02EF5A0
>> [<c007458c>] (sys_read+0x0/0x74) from [<c001dde0>]
>> (ret_fast_syscall+0x0/0x2c)
>> r8 = C001DF84 r7 = 00000003 r6 = BE9CFB28 r5 = 00000000
>> r4 = 0001A008
>>
>> Is this a know issue? Is it OK or a real bug that needs sorting out?
>> (I don't have any experience with the preemptive patch - we've been
>> using kernel 2.4 till now)
>>
>>
>> Thanks,
>> - Arnon
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> Greg Ungerer -- Chief Software Dude EMAIL: gerg at snapgear.com
> Secure Computing Corporation PHONE: +61 7 3435 2888
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--
------------------------------------------------------------------------
Greg Ungerer -- Chief Software Dude EMAIL: gerg at snapgear.com
Secure Computing Corporation PHONE: +61 7 3435 2888
825 Stanley St, FAX: +61 7 3891 3630
Woolloongabba, QLD, 4102, Australia WEB: http://www.SnapGear.com
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