Messages in this thread | | | Date | Wed, 16 Feb 2005 15:51:42 -0800 | From | Andrew Morton <> | Subject | Re: -rc3 leaking NOT BIO [Was: Memory leak in 2.6.11-rc1?] |
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Parag Warudkar <kernel-stuff@comcast.net> wrote: > > On Wednesday 16 February 2005 12:12 am, Andrew Morton wrote: > > echo "size-4096 0 0 0" > /proc/slabinfo > > Is there a reason X86_64 doesnt have CONFIG_FRAME_POINTER anywhere in > the .config?
No good reason, I suspect.
> I tried -rc4 with Manfred's patch and with CONFIG_DEBUG_SLAB and > CONFIG_DEBUG.
Thanks.
> I get the following output from > echo "size-64 0 0 0" > /proc/slabinfo > > obj ffff81002fe80000/0: 00000000000008a8 <0x8a8> > obj ffff81002fe80000/1: 00000000000008a8 <0x8a8> > obj ffff81002fe80000/2: 00000000000008a8 <0x8a8> > : 3 > : 4 > : : > obj ffff81002fe80000/43: 00000000000008a8 <0x8a8> > obj ffff81002fe80000/44: 00000000000008a8 <0x8a8> > > How do I know what is at ffff81002fe80000? I tried the normal tricks (gdb > -c /proc/kcore vmlinux, objdump -d etc.) but none of the places list this > address.
ffff81002fe80000 is the address of the slab object. 00000000000008a8 is supposed to be the caller's text address. It appears that __builtin_return_address(0) is returning junk. Perhaps due to -fomit-frame-pointer.
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