Messages in this thread | | | Date | Sat, 5 Nov 2005 00:55:00 +0100 | From | Adrian Bunk <> | Subject | Re: [PATCH resubmit] do_mount: reduce stack consumption |
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On Fri, Nov 04, 2005 at 10:27:42PM +0100, Heiko Carstens wrote: > > > See original stack back trace below and Andreas' patch and analysis > > > here: > > > http://www.ussg.iu.edu/hypermail/linux/kernel/0410.3/1844.html > > I probably should add that with "original" stack back trace a trace of > a 2.6.10 kernel was meant, if that wasn't clear, but the DM code is > still the same in 2.6.14. > > > > <4>Call Trace: > ... > > > <4> [<0000000010831380>] __map_bio+0x70/0x160 [dm_mod] > > > <4> [<000000001083173e>] __split_bio+0x1e6/0x538 [dm_mod] > > > <4> [<0000000010831ba8>] dm_request+0x118/0x25c [dm_mod] > > > <4> [<0000000000241074>] generic_make_request+0xf0/0x21c > > > <4> [<0000000010831380>] __map_bio+0x70/0x160 [dm_mod] > > > <4> [<000000001083173e>] __split_bio+0x1e6/0x538 [dm_mod] > > > <4> [<0000000010831ba8>] dm_request+0x118/0x25c [dm_mod] > > > <4> [<0000000000241074>] generic_make_request+0xf0/0x21c > > > <4> [<0000000010831380>] __map_bio+0x70/0x160 [dm_mod] > > > <4> [<000000001083173e>] __split_bio+0x1e6/0x538 [dm_mod] > > > <4> [<0000000010831ba8>] dm_request+0x118/0x25c [dm_mod] > > > <4> [<0000000000241074>] generic_make_request+0xf0/0x21c > ... > > This part of the call trace is actually good for >1500 bytes of stack > usage and is what kills us and should be fixed. > I'm surprised that there are no other bug reports regarding DM and > stack overflow with 4k stacks. >...
There were some reports of dm+xfs overflows with 4k stacks on i386.
The xfs side was sorted out, but I son't know the state of the dm part.
> Heiko
cu Adrian
--
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