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um: wrong sigmask saved in case of multiple sigframes

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we can't just find oldmask once; if there are multiple signals
and we loop building sigframes for those, ->saved_mask will be
definitely wrong for all but the first one.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2012-04-26 23:25:06 -04:00
parent d50349b0c3
commit 5a30a798fb
1 changed files with 5 additions and 6 deletions
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5
arch/um/kernel/signal.c
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@@ -74,15 +74,14 @@ static int kern_do_signal(struct pt_regs *regs)
{ {
struct k_sigaction ka_copy; struct k_sigaction ka_copy;
siginfo_t info; siginfo_t info;
sigset_t *oldset;
int sig, handled_sig = 0; int sig, handled_sig = 0;
while ((sig = get_signal_to_deliver(&info, &ka_copy, regs, NULL)) > 0) {
sigset_t *oldset;
if (test_thread_flag(TIF_RESTORE_SIGMASK)) if (test_thread_flag(TIF_RESTORE_SIGMASK))
oldset = &current->saved_sigmask; oldset = &current->saved_sigmask;
else else
oldset = &current->blocked; oldset = &current->blocked;
while ((sig = get_signal_to_deliver(&info, &ka_copy, regs, NULL)) > 0) {
handled_sig = 1; handled_sig = 1;
/* Whee! Actually deliver the signal. */ /* Whee! Actually deliver the signal. */
if (!handle_signal(regs, sig, &ka_copy, &info, oldset)) { if (!handle_signal(regs, sig, &ka_copy, &info, oldset)) {