diff mbox series

[04/20] signal/sparc32: Remove unreachable do_exit in do_sparc_fault

Message ID 20211020174406.17889-4-ebiederm@xmission.com
State New
Headers show
Series exit cleanups | expand

Commit Message

Eric W. Biederman Oct. 20, 2021, 5:43 p.m. UTC
The call to do_exit in do_sparc_fault immediately follows a call to
unhandled_fault.  The function unhandled_fault never returns.  This
means the call to do_exit can never be reached.

Cc: David Miller <davem@davemloft.net>
Cc: sparclinux@vger.kernel.org
Fixes: 2.3.41
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
---
 arch/sparc/mm/fault_32.c | 1 -
 1 file changed, 1 deletion(-)

Comments

Kees Cook Oct. 21, 2021, 4:05 p.m. UTC | #1
On Wed, Oct 20, 2021 at 12:43:50PM -0500, Eric W. Biederman wrote:
> The call to do_exit in do_sparc_fault immediately follows a call to
> unhandled_fault.  The function unhandled_fault never returns.  This
> means the call to do_exit can never be reached.

Same thought: replace with unreachable() just to make this more
self-documenting? Either way:

Reviewed-by: Kees Cook <keescook@chromium.org>

> 
> Cc: David Miller <davem@davemloft.net>
> Cc: sparclinux@vger.kernel.org
> Fixes: 2.3.41
> Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
> ---
>  arch/sparc/mm/fault_32.c | 1 -
>  1 file changed, 1 deletion(-)
> 
> diff --git a/arch/sparc/mm/fault_32.c b/arch/sparc/mm/fault_32.c
> index fa858626b85b..90dc4ae315c8 100644
> --- a/arch/sparc/mm/fault_32.c
> +++ b/arch/sparc/mm/fault_32.c
> @@ -248,7 +248,6 @@ asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write,
>  	}
>  
>  	unhandled_fault(address, tsk, regs);
> -	do_exit(SIGKILL);
>  
>  /*
>   * We ran out of memory, or some other thing happened to us that made
> -- 
> 2.20.1
>
diff mbox series

Patch

diff --git a/arch/sparc/mm/fault_32.c b/arch/sparc/mm/fault_32.c
index fa858626b85b..90dc4ae315c8 100644
--- a/arch/sparc/mm/fault_32.c
+++ b/arch/sparc/mm/fault_32.c
@@ -248,7 +248,6 @@  asmlinkage void do_sparc_fault(struct pt_regs *regs, int text_fault, int write,
 	}
 
 	unhandled_fault(address, tsk, regs);
-	do_exit(SIGKILL);
 
 /*
  * We ran out of memory, or some other thing happened to us that made