lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Sat, 19 Jan 2008 22:20:19 +0100
From:	Sam Ravnborg <>
To:	Jeremy Fitzhardinge <>,
	Chris Wright <>
Cc:	Toralf Förster <>,,,
	WANG Cong <>
Subject: [updated PATCH] xen: fix section usage in xen-head.S and setup.c

Failing to specify "ax" in the pushsection caused ld to generate
an additional section for .init.text appending a number.

A side effect of this was a section mismatch warning because modpost
did not recognize a .init.text section named .init.text.1:
WARNING: vmlinux.o(.text.head+0x247): Section mismatch: reference to .init.text.1:start_kernel (between 'is386' and 'check_x87')

Fix this by hardcoding the "ax" in the pushsection.
Thanks to Torlaf for reporting this.

Alan Modra provided the hint that made me able to
locate the root cause of this warning.
And Mike Frysinger told me how to properly fix it
using __INIT/__FINIT.

Fix following Section mismatch warning in addition:
WARNING: vmlinux.o(.text+0x14c8): Section mismatch: reference to (between 'fiddle_vdso' and 'xen_setup_features')

fiddle_vdso was only used from a __init function - so declare it __init.

Signed-off-by: Sam Ravnborg <>
Cc: Jeremy Fitzhardinge <>
Cc: Chris Wright <>
Cc: WANG Cong <>
Cc: Toralf Förster <>

diff --git a/arch/x86/xen/setup.c b/arch/x86/xen/setup.c
index f84e772..5e24f67 100644
--- a/arch/x86/xen/setup.c
+++ b/arch/x86/xen/setup.c
@@ -59,7 +59,7 @@ static void xen_idle(void)
  * Set the bit indicating "nosegneg" library variants should be used.
-static void fiddle_vdso(void)
+static void __init fiddle_vdso(void)
 	extern u32 VDSO_NOTE_MASK; /* See ../kernel/vsyscall-note.S.  */
 	extern char vsyscall_int80_start;
diff --git a/arch/x86/xen/xen-head.S b/arch/x86/xen/xen-head.S
index f8d6937..288d587 100644
--- a/arch/x86/xen/xen-head.S
+++ b/arch/x86/xen/xen-head.S
@@ -4,16 +4,18 @@
 #ifdef CONFIG_XEN
 #include <linux/elfnote.h>
+#include <linux/init.h>
 #include <asm/boot.h>
 #include <xen/interface/elfnote.h>
-.pushsection .init.text
+	__INIT
 	movl %esi,xen_start_info
 	movl $(init_thread_union+THREAD_SIZE),%esp
 	jmp xen_start_kernel
 .pushsection .bss.page_aligned
 	.align PAGE_SIZE_asm
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

Powered by blists - more mailing lists