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authorVincenzo Frascino <vincenzo.frascino@arm.com>2020-01-10 13:39:26 +0100
committerRussell King <rmk+kernel@armlinux.org.uk>2020-01-25 18:18:29 +0000
commitbc420c6ceefbb86cbbc8c00061bd779c17fa6997 (patch)
treea68365e2815bbef97ae567c384e5c22b34784fd9
parent76950f7162cad51d2200ebd22c620c14af38f718 (diff)
ARM: 8952/1: Disable kmemleak on XIP kernels
Kmemleak relies on specific symbols to register the read only data during init (e.g. __start_ro_after_init). Trying to build an XIP kernel on arm results in the linking error reported below because when this option is selected read only data after init are not allowed since .data is read only (.rodata). arm-linux-gnueabihf-ld: mm/kmemleak.o: in function `kmemleak_init': kmemleak.c:(.init.text+0x148): undefined reference to `__end_ro_after_init' arm-linux-gnueabihf-ld: kmemleak.c:(.init.text+0x14c): undefined reference to `__end_ro_after_init' arm-linux-gnueabihf-ld: kmemleak.c:(.init.text+0x150): undefined reference to `__start_ro_after_init' arm-linux-gnueabihf-ld: kmemleak.c:(.init.text+0x156): undefined reference to `__start_ro_after_init' arm-linux-gnueabihf-ld: kmemleak.c:(.init.text+0x162): undefined reference to `__start_ro_after_init' arm-linux-gnueabihf-ld: kmemleak.c:(.init.text+0x16a): undefined reference to `__start_ro_after_init' linux/Makefile:1078: recipe for target 'vmlinux' failed Fix the issue enabling kmemleak only on non XIP kernels. Signed-off-by: Vincenzo Frascino <vincenzo.frascino@arm.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
-rw-r--r--arch/arm/Kconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index bc99582bdc85..99a3e14e62bd 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -73,7 +73,7 @@ config ARM
select HAVE_EBPF_JIT if !CPU_ENDIAN_BE32
select HAVE_CONTEXT_TRACKING
select HAVE_C_RECORDMCOUNT
- select HAVE_DEBUG_KMEMLEAK
+ select HAVE_DEBUG_KMEMLEAK if !XIP_KERNEL
select HAVE_DMA_CONTIGUOUS if MMU
select HAVE_DYNAMIC_FTRACE if !XIP_KERNEL && !CPU_ENDIAN_BE32 && MMU
select HAVE_DYNAMIC_FTRACE_WITH_REGS if HAVE_DYNAMIC_FTRACE