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authorRussell King <rmk+kernel@armlinux.org.uk>2017-11-24 23:54:22 +0000
committerRussell King <rmk+kernel@armlinux.org.uk>2017-12-17 22:14:21 +0000
commitc608906165355089a4de3c9133c72e81e011096c (patch)
treecc1a76bc86bdcc8f0e69e4e3cb7874dcfccd26d2 /arch/arm/kernel/vmlinux-xip.lds.S
parent75fea300d73ae5b18957949a53ec770daaeb6fc2 (diff)
ARM: probes: avoid adding kprobes to sensitive kernel-entry/exit code
Avoid adding kprobes to any of the kernel entry/exit or startup assembly code, or code in the identity-mapped region. This code does not conform to the standard C conventions, which means that the expectations of the kprobes code is not forfilled. Placing kprobes at some of these locations results in the kernel trying to return to userspace addresses while retaining the CPU in kernel mode. Tested-by: Naresh Kamboju <naresh.kamboju@linaro.org> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'arch/arm/kernel/vmlinux-xip.lds.S')
-rw-r--r--arch/arm/kernel/vmlinux-xip.lds.S6
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/arm/kernel/vmlinux-xip.lds.S b/arch/arm/kernel/vmlinux-xip.lds.S
index ec4b3f94ad80..12b87591eb7c 100644
--- a/arch/arm/kernel/vmlinux-xip.lds.S
+++ b/arch/arm/kernel/vmlinux-xip.lds.S
@@ -96,9 +96,9 @@ SECTIONS
.text : { /* Real text segment */
_stext = .; /* Text and read-only data */
IDMAP_TEXT
- __exception_text_start = .;
- *(.exception.text)
- __exception_text_end = .;
+ __entry_text_start = .;
+ *(.entry.text)
+ __entry_text_end = .;
IRQENTRY_TEXT
TEXT_TEXT
SCHED_TEXT