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From: axel.lin@ingics.com (Axel Lin)
To: linux-arm-kernel@lists.infradead.org
Subject: Build error for nommu if CONFIG_DEBUG_ATOMIC_SLEEP is selected
Date: Fri, 18 Oct 2013 17:27:55 +0800	[thread overview]
Message-ID: <1382088475.16935.4.camel@phoenix> (raw)

Hi Michael,

I got below build error for nommu if CONFIG_DEBUG_ATOMIC_SLEEP is selected.
Also got the same build error if CONFIG_PROVE_LOCKING is selected.

Seems this issue is introduced by commit 662bbcb2747c2
"mm, sched: Allow uaccess in atomic with pagefault_disable()".

arch/arm/kernel/built-in.o: In function `arch_ptrace':
arch/arm/kernel/ptrace.c:852: undefined reference to `might_fault'
arch/arm/kernel/built-in.o: In function `restore_sigframe':
arch/arm/kernel/signal.c:173: undefined reference to `might_fault'
arch/arm/kernel/signal.c:174: undefined reference to `might_fault'
arch/arm/kernel/signal.c:175: undefined reference to `might_fault'
arch/arm/kernel/signal.c:176: undefined reference to `might_fault'
arch/arm/kernel/built-in.o:arch/arm/kernel/signal.c:177: more undefined references to `might_fault' follow
make: *** [vmlinux] Error 1

Regards,
Axel

WARNING: multiple messages have this Message-ID (diff)
From: Axel Lin <axel.lin@ingics.com>
To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
	Peter Zijlstra <peterz@infradead.org>,
	"Michael S. Tsirkin" <mst@redhat.com>
Subject: Build error for nommu if CONFIG_DEBUG_ATOMIC_SLEEP is selected
Date: Fri, 18 Oct 2013 17:27:55 +0800	[thread overview]
Message-ID: <1382088475.16935.4.camel@phoenix> (raw)

Hi Michael,

I got below build error for nommu if CONFIG_DEBUG_ATOMIC_SLEEP is selected.
Also got the same build error if CONFIG_PROVE_LOCKING is selected.

Seems this issue is introduced by commit 662bbcb2747c2
"mm, sched: Allow uaccess in atomic with pagefault_disable()".

arch/arm/kernel/built-in.o: In function `arch_ptrace':
arch/arm/kernel/ptrace.c:852: undefined reference to `might_fault'
arch/arm/kernel/built-in.o: In function `restore_sigframe':
arch/arm/kernel/signal.c:173: undefined reference to `might_fault'
arch/arm/kernel/signal.c:174: undefined reference to `might_fault'
arch/arm/kernel/signal.c:175: undefined reference to `might_fault'
arch/arm/kernel/signal.c:176: undefined reference to `might_fault'
arch/arm/kernel/built-in.o:arch/arm/kernel/signal.c:177: more undefined references to `might_fault' follow
make: *** [vmlinux] Error 1

Regards,
Axel


             reply	other threads:[~2013-10-18  9:27 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-10-18  9:27 Axel Lin [this message]
2013-10-18  9:27 ` Build error for nommu if CONFIG_DEBUG_ATOMIC_SLEEP is selected Axel Lin
2013-10-18 14:12 ` Michael S. Tsirkin
2013-10-18 14:12   ` Michael S. Tsirkin
2013-10-18 14:21   ` Axel Lin
2013-10-18 14:21     ` Axel Lin
2013-10-18 15:30     ` Michael S. Tsirkin
2013-10-18 15:30       ` Michael S. Tsirkin

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