linux-kernel - Re: [BUG] 2.6.23-rc3-mm1 Kernel panic - not syncing: Can't create pid

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Date:	Wed, 22 Aug 2007 19:47:07 +0530
From:	Kamalesh Babulal <kamalesh@...ux.vnet.ibm.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	linux-kernel@...r.kernel.org,
	Balbir Singh <balbir@...ux.vnet.ibm.com>
Subject: Re: [BUG] 2.6.23-rc3-mm1 Kernel panic - not syncing: Can't create
 pid_1 cachep

Kamalesh Babulal wrote:
> Hi Andrew,
>
> Following Kernel panic is raised while booting up with 2.6.23-rc3-mm1 
> kernel.
>
> ============================================================
> Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
> Initializing HighMem for node 0 (00038000:001fbe00)
> Initializing HighMem for node 1 (00200000:003fbe00)
> Initializing HighMem for node 2 (00400000:005fbe00)
> Initializing HighMem for node 3 (00600000:007fbe00)
> Memory: 32480436k/33554432k available (2146k kernel code, 278984k 
> reserved, 1203k data, 216k init, 31842304k highmem)
> virtual kernel memory layout:
>    fixmap  : 0xffe1a000 - 0xfffff000   (1940 kB)
>    pkmap   : 0xffc00000 - 0xffe00000   (2048 kB)
>    vmalloc : 0xf8800000 - 0xffbfe000   ( 115 MB)
>    lowmem  : 0xc0000000 - 0xf8000000   ( 896 MB)
>      .init : 0xc134c000 - 0xc1382000   ( 216 kB)
>      .data : 0xc12189e1 - 0xc1345758   (1203 kB)
>      .text : 0xc1000000 - 0xc12189e1   (2146 kB)
> Checking if this processor honours the WP bit even in supervisor 
> mode... Ok.
> SLUB: Genslabs=12, HWalign=32, Order=0-3, MinObjects=16, CPUs=16, 
> Nodes=16
> Calibrating delay using timer specific routine.. 1401.55 BogoMIPS 
> (lpj=2803105)
> Kernel panic - not syncing: Can't create pid_1 cachep
>
>
> Thanks & Regards,
> Kamalesh Babulal.
> -
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To add to the panic, it begin called by the __init pidmap_init
of kernel/pid.c:641
        init_pid_ns.pid_cachep = create_pid_cachep(1);
        if (init_pid_ns.pid_cachep == NULL)
                panic("Can't create pid_1 cachep\n");

Thanks & Regards
Kamalesh Babulal

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