Messages in this thread Patch in this message | | | From | Arvind Sankar <> | Date | Mon, 23 Sep 2019 13:17:54 -0400 | Subject | [PATCH] x86/purgatory: Add $(DISABLE_STACKLEAK_PLUGIN) |
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Since commit b059f801a937 ("x86/purgatory: Use CFLAGS_REMOVE rather than reset KBUILD_CFLAGS") kexec breaks is GCC_PLUGIN_STACKLEAK is enabled, as the purgatory contains undefined references to stackleak_track_stack. Attempting to load a kexec kernel results in: kexec: Undefined symbol: stackleak_track_stack kexec-bzImage64: Loading purgatory failed
Fix this by disabling the stackleak plugin for purgatory.
Fixes: b059f801a937 ("x86/purgatory: Use CFLAGS_REMOVE rather than reset KBUILD_CFLAGS") Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu> --- arch/x86/purgatory/Makefile | 1 + 1 file changed, 1 insertion(+)
diff --git a/arch/x86/purgatory/Makefile b/arch/x86/purgatory/Makefile index 527749066d31..fb4ee5444379 100644 --- a/arch/x86/purgatory/Makefile +++ b/arch/x86/purgatory/Makefile @@ -25,6 +25,7 @@ KCOV_INSTRUMENT := n PURGATORY_CFLAGS_REMOVE := -mcmodel=kernel PURGATORY_CFLAGS := -mcmodel=large -ffreestanding -fno-zero-initialized-in-bss +PURGATORY_CFLAGS += $(DISABLE_STACKLEAK_PLUGIN) # Default KBUILD_CFLAGS can have -pg option set when FTRACE is enabled. That # in turn leaves some undefined symbols like __fentry__ in purgatory and not -- 2.21.0
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