Messages in this thread |  | | | Date | Thu, 6 Mar 2008 17:14:59 +0100 | | From | Jan Kara <> | | Subject | Re: 2.6.24.2: 4KSTACKS + pcdrw + dm + mount -> stack overflow: ide-cd related? dm-related? |
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> On 24 Feb 2008, Peter Osterlund told this: > > > Nix <nix@esperi.org.uk> writes: > >> But while I'd normally blame pktcdvd there's only one pktcdvd function > >> in these tracebacks (pkt_open) and it's not got a significant stack > >> footprint. > > > > Did you verify that with "make checkstack" or just by looking at the > > source code? On my system, pkt_open() consumes 584 bytes because the > > compiler decides to inline lots of functions that would not normally > > be part of long call chains. The following patch fixes that problem on > > my system. > > I just looked at the source; I forgot `make checkstack' existed. > > On this system: > > 0xc0263e0f pkt_open [vmlinux]: 556 > > which is nearly as bad. > > (As an aside, I'm surprised I didn't oops when packet-writing as well: > > 0xc021270d udf_process_sequence [vmlinux]: 692 > 0xc020f43d udf_add_entry [vmlinux]: 628 > > owch. I guess that's called via a shorter call chain...) > > > I'll try the patch after this series of backups is done :) If you are interested, linux-next or -mm tree should contain a patch now that fixes the problem...
Honza -- Jan Kara <jack@suse.cz> SuSE CR Labs
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