Am 09.11.2013 20:07, schrieb Toralf Förster: > On 11/06/2013 10:31 PM, Richard Weinberger wrote: >> Am 06.11.2013 22:18, schrieb Toralf Förster: >>> On 11/06/2013 05:06 PM, Konstantin Khlebnikov wrote: >>>> In this case it must stop after scanning whole tree in line: >>>> /* Overflow after ~0UL */ >>>> if (!index) >>>> return NULL; >>>> >>> >>> A fresh current example with latest git tree shows that lines 769 and 770 >>> do alternate : >> >> Can you please ask gdb for the value of offset? >> >> Thanks, >> //richard >> > > Still trying to get those values. One attempt to do that was to replace -O2 > with -O0 in the Makefile, > but that resulted into this error : > > LD kernel/built-in.o > CC mm/memory.o > In function ‘zap_pmd_range’, > inlined from ‘zap_pud_range’ at mm/memory.c:1265:8, > inlined from ‘unmap_page_range’ at mm/memory.c:1290:8: > mm/memory.c:1220:23: error: call to ‘__compiletime_assert_1220’ declared with > attribute error: BUILD_BUG failed > mm/memory.c: In function ‘follow_page_mask’: > mm/memory.c:1530:18: error: call to ‘__compiletime_assert_1530’ declared with > attribute error: BUILD_BUG failed > make[1]: *** [mm/memory.o] Error 1 > make: *** [mm] Error 2 > > > With -O1 it compiled at least.
You cannot build Linux with -O1/O0. Try printing the value using printk... Thanks, //richard -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
