linux-kernel - Re: [BUG] next-20081216 - WARNING: at kernel/smp.c:333 smp_call_function

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Date:	Tue, 23 Dec 2008 13:09:56 -0800
From:	Yinghai Lu <yinghai@...nel.org>
To:	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>
CC:	Stephen Rothwell <sfr@...b.auug.org.au>,
	linux-next@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>,
	mingo@...e.hu, mel@....ul.ie
Subject: Re: [BUG] next-20081216 - WARNING: at kernel/smp.c:333	smp_call_function_mask

Kamalesh Babulal wrote:
> * Yinghai Lu <yinghai@...nel.org> [2008-12-19 13:02:40]:
> 
> 
> 	I tried testing with today's tip/master and it can be reproduced with it.
> 
> root (hd0,0)
>  Filesystem type is ext2fs, partition type 0x83
> kernel /vmlinuz-autotest root=/dev/mapper/VolGroup00-LogVol00 ro console=tty0 c
> onsole=ttyS1,19200 selinux=no debug nmi_watchdog=1 unknown_nmi_panic=1 initcall
> _debug earlyprintk=serial,ttyS1,19200 IDENT=1230036460
>    [Linux-bzImage, setup=0x3000, size=0x273c10]
> initrd /initrd-autotest
>    [Linux-initrd @ 0x37e5f000, 0x190980 bytes]
> 
> Linux version 2.6.28-rc8-autotest-tip (root@...-13.ltc.austin.ibm.com) (gcc version 4.1.1 20060525 (Red Hat 4.1.1-1)) #1 SMP Tue Dec 23 06:37:41 CST 2008
> Command line: root=/dev/mapper/VolGroup00-LogVol00 ro console=tty0 console=ttyS1,19200 selinux=no debug nmi_watchdog=1 unknown_nmi_panic=1 initcall_debug earlyprintk=serial,ttyS1,19200 IDENT=1230036460
> Built 1 zonelists in Node order, mobility grouping on.  Total pages: 256240
> Policy zone: DMA32
> Kernel command line: root=/dev/mapper/VolGroup00-LogVol00 ro console=tty0 console=ttyS1,19200 selinux=no debug nmi_watchdog=1 unknown_nmi_panic=1 initcall_debug earlyprintk=serial,ttyS1,19200 IDENT=1230036460
> Initializing CPU#0
> BUG: unable to handle kernel NULL pointer dereference at 0000000000000048
> IP: [<ffffffff8070e46a>] init_ISA_irqs+0x18/0x53
> PGD 0 

please try attached debug patch.

Thanks

YH

View attachment "sparse_irq_fix1.patch" of type "text/x-patch" (1611 bytes)