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| author | Al Viro <viro@ftp.linux.org.uk> | 2010-09-20 16:13:25 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2010-09-20 19:44:38 +0200 |
| commit | ed1cde68365c1251b920900c51e73675ff38dc66 (patch) | |
| tree | 7f43fcfef76bc3d715db22ab575efadeefaf8739 | |
| parent | frv: handling of restart into restart_syscall is fscked (diff) | |
| download | linux-ed1cde68365c1251b920900c51e73675ff38dc66.tar.xz linux-ed1cde68365c1251b920900c51e73675ff38dc66.zip | |
frv: double syscall restarts, syscall restart in sigreturn()
We need to make sure that only the first do_signal() to be handled on
the way out syscall will bother with syscall restarts; additionally, the
check on the "signal has user handler" path had been wrong - compare
with restart prevention in sigreturn()...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | arch/frv/kernel/signal.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/frv/kernel/signal.c b/arch/frv/kernel/signal.c index bd13b57a5c9b..bab01298b58e 100644 --- a/arch/frv/kernel/signal.c +++ b/arch/frv/kernel/signal.c @@ -446,7 +446,7 @@ static int handle_signal(unsigned long sig, siginfo_t *info, int ret; /* Are we from a system call? */ - if (in_syscall(__frame)) { + if (__frame->syscallno != -1) { /* If so, check system call restarting.. */ switch (__frame->gr8) { case -ERESTART_RESTARTBLOCK: @@ -465,6 +465,7 @@ static int handle_signal(unsigned long sig, siginfo_t *info, __frame->gr8 = __frame->orig_gr8; __frame->pc -= 4; } + __frame->syscallno = -1; } /* Set up the stack frame */ @@ -551,6 +552,7 @@ no_signal: __frame->pc -= 4; break; } + __frame->syscallno = -1; } /* if there's no signal to deliver, we just put the saved sigmask |