m68k: add missing SOFTIRQENTRY_TEXT linker section

Commit be7635e7287e ("arch, ftrace: for KASAN put hard/soft IRQ entries
into separate sections") added a new linker section, SOFTIRQENTRY_TEXT,
to the linker scripts for most architectures. It didn't add it to any of
the linker scripts for the m68k architecture. This was not really a problem
because it is only defined if either of CONFIG_FUNCTION_GRAPH_TRACER or
CONFIG_KASAN are enabled - which can never be true for m68k.

However commit 229a71860547 ("irq: Make the irqentry text section
unconditional") means that SOFTIRQENTRY_TEXT is now always defined. So on
m68k we now end up with a separate ELF section for .softirqentry.text
instead of it being part of the .text section. On some m68k targets in some
configurations this can also cause a fatal link error:

  LD      vmlinux
/usr/local/bin/../m68k-uclinux/bin/ld.real: section .softirqentry.text loaded at [0000000010de10c0,0000000010de12dd] overlaps section .rodata loaded at [0000000010de10c0,0000000010e0fd67]

To fix add in the missing SOFTIRQENTRY_TEXT section into the m68k linker
scripts. I noticed that m68k is also missing the IRQENTRY_TEXT section,
so this patch also adds an entry for that too.

Signed-off-by: Greg Ungerer <gerg@linux-m68k.org>

diff --git a/arch/m68k/kernel/vmlinux-nommu.lds b/arch/m68k/kernel/vmlinux-nommu.lds
index 3aa571a513b5dfa1f48bf2e17c120289f1a0d246..cf6edda389719535e25d505dfdc31d885995cffb 100644 (file)
--- a/arch/m68k/kernel/vmlinux-nommu.lds
+++ b/arch/m68k/kernel/vmlinux-nommu.lds
@@ -45,6 +45,8 @@ SECTIONS {
        .text : {
                HEAD_TEXT
                TEXT_TEXT
+               IRQENTRY_TEXT
+               SOFTIRQENTRY_TEXT
                SCHED_TEXT
                CPUIDLE_TEXT
                LOCK_TEXT

diff --git a/arch/m68k/kernel/vmlinux-std.lds b/arch/m68k/kernel/vmlinux-std.lds
index 89172b8974b95444f4def01ce4104b664391eaea..625a5785804faf8d706442150e6cdcac0ee117c3 100644 (file)
--- a/arch/m68k/kernel/vmlinux-std.lds
+++ b/arch/m68k/kernel/vmlinux-std.lds
@@ -16,6 +16,8 @@ SECTIONS
   .text : {
        HEAD_TEXT
        TEXT_TEXT
+       IRQENTRY_TEXT
+       SOFTIRQENTRY_TEXT
        SCHED_TEXT
        CPUIDLE_TEXT
        LOCK_TEXT

diff --git a/arch/m68k/kernel/vmlinux-sun3.lds b/arch/m68k/kernel/vmlinux-sun3.lds
index 293990efc9173288d38313e22c81e2c93aea0909..9868270b0984487c5a83100514cd88e8ddd743cd 100644 (file)
--- a/arch/m68k/kernel/vmlinux-sun3.lds
+++ b/arch/m68k/kernel/vmlinux-sun3.lds
@@ -16,6 +16,8 @@ SECTIONS
   .text : {
        HEAD_TEXT
        TEXT_TEXT
+       IRQENTRY_TEXT
+       SOFTIRQENTRY_TEXT
        SCHED_TEXT
        CPUIDLE_TEXT
        LOCK_TEXT