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| author | Al Viro <viro@zeniv.linux.org.uk> | 2010-10-11 23:35:08 -0400 |
|---|---|---|
| committer | Geert Uytterhoeven <geert@linux-m68k.org> | 2011-01-07 14:06:59 +0100 |
| commit | 089e449a82cd5ba8a858dfea88e754afb9341037 (patch) | |
| tree | c95c95611e7e75c9dafd4cb6a8dfe633b1047fab /arch/m68knommu/kernel/signal.c | |
| parent | d1574df7e01d427c2ed80ada11433a72907ca472 (diff) | |
| download | lwn-089e449a82cd5ba8a858dfea88e754afb9341037.tar.gz lwn-089e449a82cd5ba8a858dfea88e754afb9341037.zip | |
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/signal.c')
| -rw-r--r-- | arch/m68knommu/kernel/signal.c | 19 |
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(¤t->sighand->siglock); sigorsets(¤t->blocked,¤t->blocked,&ka->sa.sa_mask); @@ -710,6 +714,8 @@ handle_signal(int sig, struct k_sigaction *ka, siginfo_t *info, sigaddset(¤t->blocked,sig); recalc_sigpending(); spin_unlock_irq(¤t->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; } |