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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-12-27 11:27:30 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2011-12-27 11:27:14 +0100 |
| commit | 207a05499bf11216ac96f76b38be728f4ee49304 (patch) | |
| tree | 89cf68c8cb41dcb29cd94e0624d33938063ad9c9 /arch/s390 | |
| parent | 77ecd06ae40d0d9532c6aebc81f3d09462f20358 (diff) | |
| download | linux-207a05499bf11216ac96f76b38be728f4ee49304.tar.gz linux-207a05499bf11216ac96f76b38be728f4ee49304.tar.bz2 linux-207a05499bf11216ac96f76b38be728f4ee49304.zip | |
[S390] return address of compat signals
A 31-bit kernel always sets the high order bit in the return address
for a signal handler.
git commit d4e81b35b882d96f "[S390] allow all addressing modes" makes
sure that the high order bit is set in the signal return address for
standard signals of a 31-bit compat process but fails to do the same
for real-time signals. To make things consistent the bit needs to be
set by setup_rt_frame32 as well.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/kernel/compat_signal.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c index 60c268b16f91..6fe78c2f95d9 100644 --- a/arch/s390/kernel/compat_signal.c +++ b/arch/s390/kernel/compat_signal.c @@ -548,9 +548,9 @@ static int setup_rt_frame32(int sig, struct k_sigaction *ka, siginfo_t *info, /* Set up to return from userspace. If provided, use a stub already in userspace. */ if (ka->sa.sa_flags & SA_RESTORER) { - regs->gprs[14] = (__u64) ka->sa.sa_restorer; + regs->gprs[14] = (__u64) ka->sa.sa_restorer | PSW32_ADDR_AMODE; } else { - regs->gprs[14] = (__u64) frame->retcode; + regs->gprs[14] = (__u64) frame->retcode | PSW32_ADDR_AMODE; err |= __put_user(S390_SYSCALL_OPCODE | __NR_rt_sigreturn, (u16 __force __user *)(frame->retcode)); } |