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hardened-sources make failure on ARM
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grant123
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Joined: 23 Mar 2005
Posts: 989

PostPosted: Fri Feb 21, 2014 10:11 pm    Post subject: hardened-sources make failure on ARM Reply with quote

I get the below atomic64_sub_return messages throughout the make until it finally fails on my ARM device. Should I file a bug?

from include/linux/time.h:5,
from include/linux/stat.h:18,
from include/linux/module.h:10,
from block/cfq-iosched.c:9:
/usr/src/linux-3.13.3-hardened-r1/arch/arm/include/asm/atomic.h: In function ‘atomic64_sub_return’:
/usr/src/linux-3.13.3-hardened-r1/arch/arm/include/asm/atomic.h:716:1: warning: no return statement in function returning non-void [-Wreturn-type]
LD block/built-in.o
CC grsecurity/grsec_chdir.o
In file included from include/linux/atomic.h:4:0,
from include/linux/debug_locks.h:5,
from include/linux/lockdep.h:23,
from include/linux/spinlock_types.h:18,
from include/linux/spinlock.h:81,
from include/linux/seqlock.h:35,
from include/linux/time.h:5,
from include/uapi/linux/timex.h:56,
from include/linux/timex.h:56,
from include/linux/sched.h:17,
from grsecurity/grsec_chdir.c:2:
/usr/src/linux-3.13.3-hardened-r1/arch/arm/include/asm/atomic.h: In function ‘atomic64_sub_return’:
/usr/src/linux-3.13.3-hardened-r1/arch/arm/include/asm/atomic.h:716:1: error: no return statement in function returning non-void [-Werror=return-type]
cc1: all warnings being treated as errors
make[1]: *** [grsecurity/grsec_chdir.o] Error 1
make: *** [grsecurity] Error 2
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Hu
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Joined: 06 Mar 2007
Posts: 13836

PostPosted: Fri Feb 21, 2014 11:09 pm    Post subject: Reply with quote

Yes. Does it work in sys-kernel/gentoo-sources?
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grant123
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Joined: 23 Mar 2005
Posts: 989

PostPosted: Fri Feb 21, 2014 11:10 pm    Post subject: Reply with quote

It works great in gentoo-sources. I'll file a bug.
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N8Fear
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Joined: 15 Apr 2013
Posts: 140
Location: Berlin (Germany)

PostPosted: Sun Feb 23, 2014 9:31 am    Post subject: Reply with quote

Are you compiling with -Werror ?

Just thinking because of
Code:
cc1: all warnings being treated as errors


If yes: first try without it: I nearly always get warnings for my kernels (also for x86_64)...
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grant123
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PostPosted: Sun Feb 23, 2014 2:25 pm    Post subject: Reply with quote

I don't have that explicitly set anywhere.
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Hu
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PostPosted: Sun Feb 23, 2014 5:49 pm    Post subject: Reply with quote

It looks like that is set by the Makefile for grsecurity-specific files. Look how when building block/cfg-iosched.c, the diagnostic is a warning, but when building grsecurity/grsec_chdir.c, the diagnostic is an error. This suggests to me that the grsecurity directory uses stricter flags.
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grant123
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Joined: 23 Mar 2005
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PostPosted: Mon Feb 24, 2014 2:52 pm    Post subject: Reply with quote

Here's the bug for reference:

https://bugs.gentoo.org/show_bug.cgi?id=502058
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