diff options
| author | Grant Likely <grant.likely@secretlab.ca> | 2012-12-07 17:02:47 +0000 |
|---|---|---|
| committer | Grant Likely <grant.likely@secretlab.ca> | 2012-12-07 17:02:47 +0000 |
| commit | 7730cba2a50332c194f50a58b86359ea39a82bd1 (patch) | |
| tree | 64c8d7228da1454c02288068e57a9c61f8b0acd0 /arch/s390/kernel/compat_signal.c | |
| parent | c20151dff8a6d503c0d0cc4387c33a618cdabcb7 (diff) | |
| parent | b69f0859dc8e633c5d8c06845811588fe17e68b3 (diff) | |
| download | olio-linux-3.10-7730cba2a50332c194f50a58b86359ea39a82bd1.tar.xz olio-linux-3.10-7730cba2a50332c194f50a58b86359ea39a82bd1.zip | |
Merge tag 'v3.7-rc8' into spi/next
Linux 3.7-rc8
Diffstat (limited to 'arch/s390/kernel/compat_signal.c')
| -rw-r--r-- | arch/s390/kernel/compat_signal.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c index a1e8a8694bb..593fcc9253f 100644 --- a/arch/s390/kernel/compat_signal.c +++ b/arch/s390/kernel/compat_signal.c @@ -309,6 +309,10 @@ static int restore_sigregs32(struct pt_regs *regs,_sigregs32 __user *sregs) regs->psw.mask = (regs->psw.mask & ~PSW_MASK_USER) | (__u64)(regs32.psw.mask & PSW32_MASK_USER) << 32 | (__u64)(regs32.psw.addr & PSW32_ADDR_AMODE); + /* Check for invalid user address space control. */ + if ((regs->psw.mask & PSW_MASK_ASC) >= (psw_kernel_bits & PSW_MASK_ASC)) + regs->psw.mask = (psw_user_bits & PSW_MASK_ASC) | + (regs->psw.mask & ~PSW_MASK_ASC); regs->psw.addr = (__u64)(regs32.psw.addr & PSW32_ADDR_INSN); for (i = 0; i < NUM_GPRS; i++) regs->gprs[i] = (__u64) regs32.gprs[i]; @@ -481,7 +485,10 @@ static int setup_frame32(int sig, struct k_sigaction *ka, /* Set up registers for signal handler */ regs->gprs[15] = (__force __u64) frame; - regs->psw.mask |= PSW_MASK_BA; /* force amode 31 */ + /* Force 31 bit amode and default user address space control. */ + regs->psw.mask = PSW_MASK_BA | + (psw_user_bits & PSW_MASK_ASC) | + (regs->psw.mask & ~PSW_MASK_ASC); regs->psw.addr = (__force __u64) ka->sa.sa_handler; regs->gprs[2] = map_signal(sig); @@ -549,7 +556,10 @@ static int setup_rt_frame32(int sig, struct k_sigaction *ka, siginfo_t *info, /* Set up registers for signal handler */ regs->gprs[15] = (__force __u64) frame; - regs->psw.mask |= PSW_MASK_BA; /* force amode 31 */ + /* Force 31 bit amode and default user address space control. */ + regs->psw.mask = PSW_MASK_BA | + (psw_user_bits & PSW_MASK_ASC) | + (regs->psw.mask & ~PSW_MASK_ASC); regs->psw.addr = (__u64) ka->sa.sa_handler; regs->gprs[2] = map_signal(sig); |