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Message-ID: <20130528192102.20162.96295.stgit@warthog.procyon.org.uk> Date: Tue, 28 May 2013 20:21:02 +0100 From: David Howells <dhowells@...hat.com> To: torvalds@...ux-foundation.org Cc: Al Viro <viro@...IV.linux.org.uk>, linux-am33-list@...hat.com, linux-kernel@...r.kernel.org, Ken Cox <jkc@...hat.com> Subject: [PATCH 1/4] MN10300: Fix ret_from_kernel_thread [ver #2] ret_from_kernel_thread needs to set A2 to the thread_info pointer before jumping to syscall_exit. Without this, we never correctly start userspace. This was caused by the rejuggling of the fork/exec paths in commit: ddf23e87a804cbf6fa3818076b33fe023cce09fd Author: Al Viro <viro@...iv.linux.org.uk> Date: Thu Oct 11 17:32:41 2012 -0400 Subject: mn10300: switch to saner kernel_execve() semantics Reported-by: Ken Cox <jkc@...hat.com> Signed-off-by: David Howells <dhowells@...hat.com> Acked-by: Ken Cox <jkc@...hat.com> Acked-by: Al Viro <viro@...IV.linux.org.uk> --- arch/mn10300/kernel/entry.S | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/mn10300/kernel/entry.S b/arch/mn10300/kernel/entry.S index 68fcab8..9420057 100644 --- a/arch/mn10300/kernel/entry.S +++ b/arch/mn10300/kernel/entry.S @@ -60,6 +60,7 @@ ENTRY(ret_from_kernel_thread) mov (REG_D0,fp),d0 mov (REG_A0,fp),a0 calls (a0) + GET_THREAD_INFO a2 # A2 must be set on return from sys_exit() clr d0 mov d0,(REG_D0,fp) jmp syscall_exit -- 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/
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