debug: Fix __bug_table[] in arch linker scripts
authorPeter Zijlstra <peterz@infradead.org>
Thu, 30 Mar 2017 15:49:27 +0000 (17:49 +0200)
committerIngo Molnar <mingo@kernel.org>
Mon, 3 Apr 2017 08:22:40 +0000 (10:22 +0200)
commitb5effd3815ccbe3df1a015a6d67d8a24a27813d5
tree297de309e13268cd225e688b1a0d35e97869ae74
parent19d436268dde95389c616bb3819da73f0a8b28a8
debug: Fix __bug_table[] in arch linker scripts

The kbuild test robot reported this build failure on a number
of architectures:

 >         make.cross ARCH=arm
 >    lib/lib.a(bug.o): In function `find_bug':
 > >> lib/bug.c:135: undefined reference to `__start___bug_table'
 > >> lib/bug.c:135: undefined reference to `__stop___bug_table'

Caused by:

  19d436268dde ("debug: Add _ONCE() logic to report_bug()")

Which moved the BUG_TABLE from RO_DATA_SECTION() to RW_DATA_SECTION(),
but a number of architectures don't use RW_DATA_SECTION(), so they
ended up with no __bug_table[] ...

Ideally all those would use RW_DATA_SECTION() in their linker scripts,
but that's for another day.

Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kbuild test robot <fengguang.wu@intel.com>
Cc: kbuild-all@01.org
Cc: tipbuild@zytor.com
Link: http://lkml.kernel.org/r/20170330154927.o6qmgfp4bdhrajbm@hirez.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/arm/kernel/vmlinux-xip.lds.S
arch/arm/kernel/vmlinux.lds.S
arch/avr32/kernel/vmlinux.lds.S
arch/blackfin/kernel/vmlinux.lds.S
arch/c6x/kernel/vmlinux.lds.S
arch/cris/kernel/vmlinux.lds.S
arch/frv/kernel/vmlinux.lds.S
arch/ia64/kernel/vmlinux.lds.S
arch/mips/kernel/vmlinux.lds.S
arch/powerpc/kernel/vmlinux.lds.S
arch/x86/kernel/vmlinux.lds.S