lists.openwall.net   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  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [thread-next>] [day] [month] [year] [list]
Date:	Tue, 22 Jul 2008 18:14:16 +0200
From:	Alexander van Heukelum <heukelum@...lshack.com>
To:	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>
Cc:	Andi Kleen <andi@...stfloor.org>, heukelum@...tmail.fm
Subject: x86_64, dwarf2: push pushes 8 bytes and popf pops 8

The CFI_ADJUST_CFA_OFFSET dwarf2 annotation of a push/popf
pair in ret_from_fork wrongly used a value of 4. It should
have been 8. Fix that.

Signed-off-by: Alexander van Heukelum <heukelum@...tmail.fm>

diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S
index ae63e58..5f6cac6 100644
--- a/arch/x86/kernel/entry_64.S
+++ b/arch/x86/kernel/entry_64.S
@@ -269,9 +269,9 @@ ENTRY(native_usergs_sysret64)
 ENTRY(ret_from_fork)
 	CFI_DEFAULT_STACK
 	push kernel_eflags(%rip)
-	CFI_ADJUST_CFA_OFFSET 4
+	CFI_ADJUST_CFA_OFFSET 8
 	popf				# reset kernel eflags
-	CFI_ADJUST_CFA_OFFSET -4
+	CFI_ADJUST_CFA_OFFSET -8
 	call schedule_tail
 	GET_THREAD_INFO(%rcx)
 	testl $(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT),TI_flags(%rcx)

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ