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[S390] ptrace: dont abuse PT_PTRACED

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Nobody except ptrace itself should use task->ptrace or PT_PTRACED
directly, change arch/s390/kernel/traps.c to use the helper.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Oleg Nesterov 2009-12-18 17:43:24 +01:00 committed by Martin Schwidefsky
parent d302e1a5db
commit ca633fd006
1 changed files with 3 additions and 3 deletions
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6
arch/s390/kernel/traps.c
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@ -18,7 +18,7 @@
#include <linux/kernel.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/ptrace.h>
#include <linux/tracehook.h>
#include <linux/timer.h>
#include <linux/mm.h>
#include <linux/smp.h>
@ -382,7 +382,7 @@ void __kprobes do_single_step(struct pt_regs *regs)
SIGTRAP) == NOTIFY_STOP){
return;
}
if ((current->ptrace & PT_PTRACED) != 0)
if (tracehook_consider_fatal_signal(current, SIGTRAP))
force_sig(SIGTRAP, current);
}
@ -483,7 +483,7 @@ static void illegal_op(struct pt_regs * regs, long interruption_code)
if (get_user(*((__u16 *) opcode), (__u16 __user *) location))
return;
if (*((__u16 *) opcode) == S390_BREAKPOINT_U16) {
if (current->ptrace & PT_PTRACED)
if (tracehook_consider_fatal_signal(current, SIGTRAP))
force_sig(SIGTRAP, current);
else
signal = SIGILL;