[PATCH] 2.6.22.6 user-mode linux: fix error in check_sysemu

From: lepton
Date: Sun Sep 23 2007 - 08:28:04 EST


it is a error do count++ here, it will let the following compare (after 8 lines) " if (!count)" always be false.

Signed-off-by: Lepton Wu <ytht.net@xxxxxxxxx>

diff -X linux-2.6.22.6/Documentation/dontdiff -pr -U 8 linux-2.6.22.6/arch/um/os-Linux/start_up.c linux-2.6.22.6-uml/arch/um/os-Linux/start_up.c
--- linux-2.6.22.6/arch/um/os-Linux/start_up.c 2007-09-14 17:41:10.000000000 +0800
+++ linux-2.6.22.6-uml/arch/um/os-Linux/start_up.c 2007-09-23 20:14:08.000000000 +0800
@@ -250,17 +250,16 @@ static void __init check_sysemu(void)
non_fatal("Checking advanced syscall emulation patch for ptrace...");
pid = start_ptraced_child(&stack);

if((ptrace(PTRACE_OLDSETOPTIONS, pid, 0,
(void *) PTRACE_O_TRACESYSGOOD) < 0))
fatal_perror("check_ptrace: PTRACE_OLDSETOPTIONS failed");

while(1){
- count++;
if(ptrace(PTRACE_SYSEMU_SINGLESTEP, pid, 0, 0) < 0)
goto fail;
CATCH_EINTR(n = waitpid(pid, &status, WUNTRACED));
if(n < 0)
fatal_perror("check_ptrace : wait failed");

if(WIFSTOPPED(status) && (WSTOPSIG(status) == (SIGTRAP|0x80))){
if (!count)
-
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