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authorAl Viro <viro@zeniv.linux.org.uk>2010-10-11 23:35:08 -0400
committerGeert Uytterhoeven <geert@linux-m68k.org>2011-01-07 14:06:59 +0100
commit089e449a82cd5ba8a858dfea88e754afb9341037 (patch)
treec95c95611e7e75c9dafd4cb6a8dfe633b1047fab /arch/m68knommu/kernel
parentd1574df7e01d427c2ed80ada11433a72907ca472 (diff)
downloadlinux-089e449a82cd5ba8a858dfea88e754afb9341037.tar.bz2
m68knommu: Don't lose state if sigframe setup fails
exact parallel to m68k analog Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Acked-by: Greg Ungerer <gerg@uclinux.org> Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Diffstat (limited to 'arch/m68knommu/kernel')
-rw-r--r--arch/m68knommu/kernel/signal.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/arch/m68knommu/kernel/signal.c b/arch/m68knommu/kernel/signal.c
index c070f3f64255..e00f1bb12b8a 100644
--- a/arch/m68knommu/kernel/signal.c
+++ b/arch/m68knommu/kernel/signal.c
@@ -528,7 +528,7 @@ get_sigframe(struct k_sigaction *ka, struct pt_regs *regs, size_t frame_size)
return (void *)((usp - frame_size) & -8UL);
}
-static void setup_frame (int sig, struct k_sigaction *ka,
+static int setup_frame (int sig, struct k_sigaction *ka,
sigset_t *set, struct pt_regs *regs)
{
struct sigframe *frame;
@@ -582,14 +582,14 @@ adjust_stack:
tregs->pc = regs->pc;
tregs->sr = regs->sr;
}
- return;
+ return err;
give_sigsegv:
force_sigsegv(sig, current);
goto adjust_stack;
}
-static void setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info,
+static int setup_rt_frame (int sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *set, struct pt_regs *regs)
{
struct rt_sigframe *frame;
@@ -646,7 +646,7 @@ adjust_stack:
tregs->pc = regs->pc;
tregs->sr = regs->sr;
}
- return;
+ return err;
give_sigsegv:
force_sigsegv(sig, current);
@@ -693,6 +693,7 @@ static void
handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info,
sigset_t *oldset, struct pt_regs *regs)
{
+ int err;
/* are we from a system call? */
if (regs->orig_d0 >= 0)
/* If so, check system call restarting.. */
@@ -700,9 +701,12 @@ handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info,
/* set up the stack frame */
if (ka->sa.sa_flags & SA_SIGINFO)
- setup_rt_frame(sig, ka, info, oldset, regs);
+ err = setup_rt_frame(sig, ka, info, oldset, regs);
else
- setup_frame(sig, ka, oldset, regs);
+ err = setup_frame(sig, ka, oldset, regs);
+
+ if (err)
+ return;
spin_lock_irq(&current->sighand->siglock);
sigorsets(&current->blocked,&current->blocked,&ka->sa.sa_mask);
@@ -710,6 +714,8 @@ handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info,
sigaddset(&current->blocked,sig);
recalc_sigpending();
spin_unlock_irq(&current->sighand->siglock);
+
+ clear_thread_flag(TIF_RESTORE_SIGMASK);
}
/*
@@ -742,7 +748,6 @@ asmlinkage void do_signal(struct pt_regs *regs)
if (signr > 0) {
/* Whee! Actually deliver the signal. */
handle_signal(signr, &ka, &info, oldset, regs);
- clear_thread_flag(TIF_RESTORE_SIGMASK);
return;
}