diff options
| -rw-r--r-- | arch/x86/ia32/ia32_signal.c | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/signal_64.c | 11 |
2 files changed, 7 insertions, 8 deletions
diff --git a/arch/x86/ia32/ia32_signal.c b/arch/x86/ia32/ia32_signal.c index 0866104..bbed3a2 100644 --- a/arch/x86/ia32/ia32_signal.c +++ b/arch/x86/ia32/ia32_signal.c @@ -499,8 +499,6 @@ int ia32_setup_frame(int sig, struct k_sigaction *ka, regs->cs = __USER32_CS; regs->ss = __USER32_DS; - set_fs(USER_DS); - #if DEBUG_SIG printk(KERN_DEBUG "SIG deliver (%s:%d): sp=%p pc=%lx ra=%u\n", current->comm, current->pid, frame, regs->ip, frame->pretcode); @@ -596,8 +594,6 @@ int ia32_setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, regs->cs = __USER32_CS; regs->ss = __USER32_DS; - set_fs(USER_DS); - #if DEBUG_SIG printk(KERN_DEBUG "SIG deliver (%s:%d): sp=%p pc=%lx ra=%u\n", current->comm, current->pid, frame, regs->ip, frame->pretcode); diff --git a/arch/x86/kernel/signal_64.c b/arch/x86/kernel/signal_64.c index 3a76702..ccb2a45 100644 --- a/arch/x86/kernel/signal_64.c +++ b/arch/x86/kernel/signal_64.c @@ -285,10 +285,6 @@ static int setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info, even if the handler happens to be interrupting 32-bit code. */ regs->cs = __USER_CS; - /* This, by contrast, has nothing to do with segment registers - - see include/asm-x86_64/uaccess.h for details. */ - set_fs(USER_DS); - return 0; give_sigsegv: @@ -377,6 +373,13 @@ handle_signal(unsigned long sig, siginfo_t *info, struct k_sigaction *ka, if (ret == 0) { /* + * This has nothing to do with segment registers, + * despite the name. This magic affects uaccess.h + * macros' behavior. Reset it to the normal setting. + */ + set_fs(USER_DS); + + /* * Clear the direction flag as per the ABI for function entry. */ regs->flags &= ~X86_EFLAGS_DF; |