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Date: Mon, 3 Apr 2017 01:27:49 -0700
From: tip-bot for Peter Zijlstra <tipbot@...or.com>
To: linux-tip-commits@...r.kernel.org
Cc: torvalds@...ux-foundation.org, linux-kernel@...r.kernel.org,
mingo@...nel.org, tglx@...utronix.de, fengguang.wu@...el.com,
hpa@...or.com, peterz@...radead.org
Subject: [tip:x86/asm] debug: Fix __bug_table[] in arch linker scripts
Commit-ID: b5effd3815ccbe3df1a015a6d67d8a24a27813d5
Gitweb: http://git.kernel.org/tip/b5effd3815ccbe3df1a015a6d67d8a24a27813d5
Author: Peter Zijlstra <peterz@...radead.org>
AuthorDate: Thu, 30 Mar 2017 17:49:27 +0200
Committer: Ingo Molnar <mingo@...nel.org>
CommitDate: Mon, 3 Apr 2017 10:22:40 +0200
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@...radead.org>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: kbuild test robot <fengguang.wu@...el.com>
Cc: kbuild-all@...org
Cc: tipbuild@...or.com
Link: http://lkml.kernel.org/r/20170330154927.o6qmgfp4bdhrajbm@hirez.programming.kicks-ass.net
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
arch/arm/kernel/vmlinux-xip.lds.S | 2 ++
arch/arm/kernel/vmlinux.lds.S | 2 ++
arch/avr32/kernel/vmlinux.lds.S | 1 +
arch/blackfin/kernel/vmlinux.lds.S | 2 ++
arch/c6x/kernel/vmlinux.lds.S | 2 ++
arch/cris/kernel/vmlinux.lds.S | 2 ++
arch/frv/kernel/vmlinux.lds.S | 2 ++
arch/ia64/kernel/vmlinux.lds.S | 2 ++
arch/mips/kernel/vmlinux.lds.S | 1 +
arch/powerpc/kernel/vmlinux.lds.S | 2 ++
arch/x86/kernel/vmlinux.lds.S | 1 +
11 files changed, 19 insertions(+)
diff --git a/arch/arm/kernel/vmlinux-xip.lds.S b/arch/arm/kernel/vmlinux-xip.lds.S
index 37b2a11..8265b11 100644
--- a/arch/arm/kernel/vmlinux-xip.lds.S
+++ b/arch/arm/kernel/vmlinux-xip.lds.S
@@ -242,6 +242,8 @@ SECTIONS
}
_edata_loc = __data_loc + SIZEOF(.data);
+ BUG_TABLE
+
#ifdef CONFIG_HAVE_TCM
/*
* We align everything to a page boundary so we can
diff --git a/arch/arm/kernel/vmlinux.lds.S b/arch/arm/kernel/vmlinux.lds.S
index ce18007..c83a7ba 100644
--- a/arch/arm/kernel/vmlinux.lds.S
+++ b/arch/arm/kernel/vmlinux.lds.S
@@ -262,6 +262,8 @@ SECTIONS
}
_edata_loc = __data_loc + SIZEOF(.data);
+ BUG_TABLE
+
#ifdef CONFIG_HAVE_TCM
/*
* We align everything to a page boundary so we can
diff --git a/arch/avr32/kernel/vmlinux.lds.S b/arch/avr32/kernel/vmlinux.lds.S
index 17f2730..623d18d 100644
--- a/arch/avr32/kernel/vmlinux.lds.S
+++ b/arch/avr32/kernel/vmlinux.lds.S
@@ -75,6 +75,7 @@ SECTIONS
_edata = .;
}
+ BUG_TABLE
BSS_SECTION(0, 8, 8)
_end = .;
diff --git a/arch/blackfin/kernel/vmlinux.lds.S b/arch/blackfin/kernel/vmlinux.lds.S
index 68069a1..334ef81 100644
--- a/arch/blackfin/kernel/vmlinux.lds.S
+++ b/arch/blackfin/kernel/vmlinux.lds.S
@@ -115,6 +115,8 @@ SECTIONS
__data_lma = LOADADDR(.data);
__data_len = SIZEOF(.data);
+ BUG_TABLE
+
/* The init section should be last, so when we free it, it goes into
* the general memory pool, and (hopefully) will decrease fragmentation
* a tiny bit. The init section has a _requirement_ that it be
diff --git a/arch/c6x/kernel/vmlinux.lds.S b/arch/c6x/kernel/vmlinux.lds.S
index a1a5c16..29ebea4 100644
--- a/arch/c6x/kernel/vmlinux.lds.S
+++ b/arch/c6x/kernel/vmlinux.lds.S
@@ -128,6 +128,8 @@ SECTIONS
. = ALIGN(8);
}
+ BUG_TABLE
+
_edata = .;
__bss_start = .;
diff --git a/arch/cris/kernel/vmlinux.lds.S b/arch/cris/kernel/vmlinux.lds.S
index 9795862..867f237 100644
--- a/arch/cris/kernel/vmlinux.lds.S
+++ b/arch/cris/kernel/vmlinux.lds.S
@@ -68,6 +68,8 @@ SECTIONS
__edata = . ; /* End of data section. */
_edata = . ;
+ BUG_TABLE
+
INIT_TASK_DATA_SECTION(PAGE_SIZE)
. = ALIGN(PAGE_SIZE); /* Init code and data. */
diff --git a/arch/frv/kernel/vmlinux.lds.S b/arch/frv/kernel/vmlinux.lds.S
index aa6e573..3f44dcb 100644
--- a/arch/frv/kernel/vmlinux.lds.S
+++ b/arch/frv/kernel/vmlinux.lds.S
@@ -102,6 +102,8 @@ SECTIONS
_edata = .; /* End of data section */
+ BUG_TABLE
+
/* GP section */
. = ALIGN(L1_CACHE_BYTES);
_gp = . + 2048;
diff --git a/arch/ia64/kernel/vmlinux.lds.S b/arch/ia64/kernel/vmlinux.lds.S
index f89d20c..798026d 100644
--- a/arch/ia64/kernel/vmlinux.lds.S
+++ b/arch/ia64/kernel/vmlinux.lds.S
@@ -192,6 +192,8 @@ SECTIONS {
CONSTRUCTORS
}
+ BUG_TABLE
+
. = ALIGN(16); /* gp must be 16-byte aligned for exc. table */
.got : AT(ADDR(.got) - LOAD_OFFSET) {
*(.got.plt)
diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S
index f0a0e6d..8ca2371 100644
--- a/arch/mips/kernel/vmlinux.lds.S
+++ b/arch/mips/kernel/vmlinux.lds.S
@@ -97,6 +97,7 @@ SECTIONS
DATA_DATA
CONSTRUCTORS
}
+ BUG_TABLE
_gp = . + 0x8000;
.lit8 : {
*(.lit8)
diff --git a/arch/powerpc/kernel/vmlinux.lds.S b/arch/powerpc/kernel/vmlinux.lds.S
index 7394b77..1c24c89 100644
--- a/arch/powerpc/kernel/vmlinux.lds.S
+++ b/arch/powerpc/kernel/vmlinux.lds.S
@@ -312,6 +312,8 @@ SECTIONS
NOSAVE_DATA
}
+ BUG_TABLE
+
. = ALIGN(PAGE_SIZE);
_edata = .;
PROVIDE32 (edata = .);
diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S
index c74ae9c..c8a3b61 100644
--- a/arch/x86/kernel/vmlinux.lds.S
+++ b/arch/x86/kernel/vmlinux.lds.S
@@ -146,6 +146,7 @@ SECTIONS
_edata = .;
} :data
+ BUG_TABLE
. = ALIGN(PAGE_SIZE);
__vvar_page = .;
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