[Bugme-new] [Bug 9214] New: panic in show_mem on when out_of_memory

[bugme-daemon at bugzilla.kernel.org]

http://bugzilla.kernel.org/show_bug.cgi?id=9214

           Summary: panic in show_mem on when out_of_memory
           Product: Memory Management
           Version: 2.5
     KernelVersion: 2.6.21.5
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Other
        AssignedTo: akpm at osdl.org
        ReportedBy: berndp at optonline.net


Most recent kernel where this bug did not occur: unknown
Distribution: Fedora Core 6 x86_64
Hardware Environment: 2 x Quad Xeon Supermicro with 4GB of memory
Software Environment: 64bit
Problem Description:
When running an application that reads a large file (8GB) into memory (4GB), a
kernel panic occurs. No output occured on the serial port, so the following
info was copied from the screen manually.

The process that caused the panic was "init".

RIP: show_mem + 0x8d/0x140


Stack:
out_of_memory + 0x75
__alloc_pages
__do_page_cache_readahead
mntput_no_expire
link_path_walk
filemap_nopage
__handle_mm_fault
do_page_fault
error_exit

This is happening on an 8-way SMP (2 quad xeon processors), supermicro 6015t-tv
Some kernel config info:

X86_64_ACPI_NUMA is switched on
no forced preemption
NUMA support is on
page migration is on
CC_STACKPROTECTOR is on
processor family is MCORE2


Steps to reproduce:

run an application that reads a large file into memory


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