x86/paravirt: Make BUG_func() usable by non-GPL modules

jgross1 · bp3tk0v · commit f7cfe7017b53 · 2024-01-22T15:51:07.000+01:00
Several inlined functions subject to paravirt patching are referencing BUG_func() after the recent switch to the alternative patching mechanism. As those functions can legally be used by non-GPL modules, BUG_func() must be usable by those modules, too. So use EXPORT_SYMBOL() when exporting BUG_func(). Fixes: 9824b00 ("x86/paravirt: Move some functions and defines to alternative.c") Signed-off-by: Juergen Gross <jgross@suse.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20240109082232.22657-1-jgross@suse.com
diff --git a/arch/x86/kernel/alternative.c b/arch/x86/kernel/alternative.c
@@ -403,7 +403,7 @@ noinstr void BUG_func(void)
 {
 	BUG();
 }
-EXPORT_SYMBOL_GPL(BUG_func);
+EXPORT_SYMBOL(BUG_func);
 
 #define CALL_RIP_REL_OPCODE	0xff
 #define CALL_RIP_REL_MODRM	0x15

Original file line number	Diff line number	Diff line change
`@@ -403,7 +403,7 @@ noinstr void BUG_func(void)`
`403`	`403`	`{`
`404`	`404`	`BUG();`
`405`	`405`	`}`
`406`		`-EXPORT_SYMBOL_GPL(BUG_func);`
	`406`	`+EXPORT_SYMBOL(BUG_func);`
`407`	`407`
`408`	`408`	`#define CALL_RIP_REL_OPCODE 0xff`
`409`	`409`	`#define CALL_RIP_REL_MODRM 0x15`