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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2006-09-20 15:58:54 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2006-09-20 15:58:54 +0200 |
| commit | 8427082a506f7ae0abf82ce0047a045ec4309e59 (patch) | |
| tree | ddd756abcf3fe2241ce4a8d322a11e0404fb345f /arch | |
| parent | 39b083fe1c3c7b88939f6fa1b0b96e579f12e96f (diff) | |
| download | linux-8427082a506f7ae0abf82ce0047a045ec4309e59.tar.gz | |
[S390] fix syscall restart handling.
If do_signal() gets called several times before returning to user space
and no signal is pending (e.g. cancelled by a debugger) syscall restart
handling could be done several times. This would change the user space
PSW to an address prior to the syscall instruction.
Fix this by making sure that syscall restart handling is only done once.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/s390/kernel/signal.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/kernel/signal.c b/arch/s390/kernel/signal.c index a887b686f2792..dd05423f87a84 100644 --- a/arch/s390/kernel/signal.c +++ b/arch/s390/kernel/signal.c @@ -457,6 +457,7 @@ void do_signal(struct pt_regs *regs) case -ERESTART_RESTARTBLOCK: regs->gprs[2] = -EINTR; } + regs->trap = -1; /* Don't deal with this again. */ } /* Get signal to deliver. When running under ptrace, at this point |