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[PATCH] ppc64: fix seccomp with 32-bit userland 

The seccomp check has to happen when entering the syscall and not when
exiting it or regs->gpr[0] contains garabge during signal handling in
ppc64_rt_sigreturn (this actually might be a bug too, but an orthogonal
one, since we really have to run the check before invoking the syscall and
not after it).

Signed-off-by: Andrea Arcangeli <andrea@cpushare.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andrea Arcangeli 2005-06-23 22:00:45 -07:00 committed by Linus Torvalds
parent 16822e6205
commit 7286aa9b9a
1 changed files with 2 additions and 2 deletions
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4
arch/ppc64/kernel/ptrace.c
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@ -305,6 +305,8 @@ static void do_syscall_trace(void)
void do_syscall_trace_enter(struct pt_regs *regs)
{
secure_computing(regs->gpr[0]);
if (test_thread_flag(TIF_SYSCALL_TRACE)
&& (current->ptrace & PT_PTRACED))
do_syscall_trace();
@ -320,8 +322,6 @@ void do_syscall_trace_enter(struct pt_regs *regs)
void do_syscall_trace_leave(struct pt_regs *regs)
{
secure_computing(regs->gpr[0]);
if (unlikely(current->audit_context))
audit_syscall_exit(current,
(regs->ccr&0x1000)?AUDITSC_FAILURE:AUDITSC_SUCCESS,