Re: Mbuf double-free guilty party detection patch

From: Andrey Chernov (ache_at_freebsd.org)
Date: 06/26/05

  • Next message: Mike Silbersack: "Re: Mbuf double-free guilty party detection patch" 
    Date: Sun, 26 Jun 2005 06:17:30 +0400
To: Mike Silbersack <silby@silby.com>

    On Sat, Jun 25, 2005 at 05:13:18PM -0500, Mike Silbersack wrote:
    > Here's a fixed version of the patch that should return the correct

    I got lots of:

    Jun 26 05:22:44 pobrecita kernel: This memory last freed by: c04d7a88
    Jun 26 05:22:44 pobrecita kernel: Memory modified after free 0xc2458900(256) val=0 @ 0xc2458930

    with "@ 0xc2458930" part changed and "last freed" addresses are:
    c04d7a88, c04dbe9d, c04dc490, c04dffff, c04e02bc

    kgdb /sys/i386/compile/POBRECITA/kernel.debug /dev/mem
    (kgdb) x 0xc04d7a88
    0xc04d7a88 <m_freem+24>: 0xf475c085
    (kgdb) x 0xc04dffff
    0xc04dffff <sbcompress+431>: 0x66ebc389
    (kgdb) x 0xc04dc490
    0xc04dc490 <soreceive+2640>: 0x8908558b
    (kgdb) x 0xc04e02bc
    0xc04e02bc <sbdrop_locked+236>: 0xdb85c189
    (kgdb) x 0xc04dbe9d
    0xc04dbe9d <soreceive+1117>: 0x8908558b

    Is it helps? 

    -- 
http://ache.pp.ru/
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