http://bugzilla.kernel.org/show_bug.cgi?id=11800 ------- Comment #7 from anonymous@xxxxxxxxxxxxxxxxxxxx 2008-10-27 10:48 ------- Reply-To: beej@xxxxxxxxxxxx At 12:35 10/23/2008, James Bottomley wrote: >On Thu, 2008-10-23 at 12:14 -0400, Marc Bejarano wrote: >> At 17:17 10/22/2008, James Bottomley wrote: >> >On Wed, 2008-10-22 at 13:30 -0700, Andrew Morton wrote: >> >> OK, it's here: >> >> >> >> buf = kmalloc(vpd_len, GFP_KERNEL); >> >> >> >> it's a gcc bug. >> >> >> >> Please see if you can find some way to make it go away - perhaps change >> >> vpd_len's type to `int', things like that. >> >> >> >> Or use a different compiler version :( >> >> i'm not worried about compiling this. i already did a compilation >> without it and i'll be fine without SES. i just selected it on the >> off chance i'd find time to play with it. i was just doing my duty >> of reporting this to save others the trouble. >> >> >Could it be an optimisation issue? The static oversize test relies on >> >the compiler optimising away a leg that can never be reached if the size >> >is under the max. If you do a make V=1 you'll see what optimisation >> >flags the compiler is using ... if it's -O2 then yes, the compiler >> >should be optimising stuff away and it's a clear compiler problem. If >> >it's anything else, we might have a mis setting of the optimisation >> >level in the kernel build. >> >> looks to me like -Os: > >I think we have a winner: -Os is rather less well implemented in older >versions of gcc. Could you retry with -O2? > >You do this by setting the config option > >CONFIG_CC_OPTIMIZE_FOR_SIZE verified. setting CONFIG_CC_OPTIMIZE_FOR_SIZE=n in .config does allow ses.c to be compiled by gcc 3.4.5 from the CentOS 4 gcc-3.4.5-2 RPM. >If we verify this to be the root cause, we >might consider making the default for that option N if gcc version is < >4. marc -- Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
