diff options
Diffstat (limited to 'arch/sparc')
| -rw-r--r-- | arch/sparc/include/asm/switch_to_64.h | 3 | ||||
| -rw-r--r-- | arch/sparc/kernel/process_64.c | 25 | ||||
| -rw-r--r-- | arch/sparc/kernel/rtrap_64.S | 1 | ||||
| -rw-r--r-- | arch/sparc/kernel/signal32.c | 12 | ||||
| -rw-r--r-- | arch/sparc/kernel/signal_64.c | 6 | ||||
| -rw-r--r-- | arch/sparc/mm/init_64.c | 1 | ||||
| -rw-r--r-- | arch/sparc/mm/ultra.S | 4 |
7 files changed, 40 insertions, 12 deletions
diff --git a/arch/sparc/include/asm/switch_to_64.h b/arch/sparc/include/asm/switch_to_64.h index 4ff29b1406a9..b1d4e2e3210f 100644 --- a/arch/sparc/include/asm/switch_to_64.h +++ b/arch/sparc/include/asm/switch_to_64.h @@ -67,6 +67,7 @@ do { save_and_clear_fpu(); \ } while(0) void synchronize_user_stack(void); -void fault_in_user_windows(void); +struct pt_regs; +void fault_in_user_windows(struct pt_regs *); #endif /* __SPARC64_SWITCH_TO_64_H */ diff --git a/arch/sparc/kernel/process_64.c b/arch/sparc/kernel/process_64.c index 318efd784a0b..5640131e2abf 100644 --- a/arch/sparc/kernel/process_64.c +++ b/arch/sparc/kernel/process_64.c @@ -36,6 +36,7 @@ #include <linux/sysrq.h> #include <linux/nmi.h> #include <linux/context_tracking.h> +#include <linux/signal.h> #include <linux/uaccess.h> #include <asm/page.h> @@ -528,7 +529,12 @@ static void stack_unaligned(unsigned long sp) force_sig_info(SIGBUS, &info, current); } -void fault_in_user_windows(void) +static const char uwfault32[] = KERN_INFO \ + "%s[%d]: bad register window fault: SP %08lx (orig_sp %08lx) TPC %08lx O7 %08lx\n"; +static const char uwfault64[] = KERN_INFO \ + "%s[%d]: bad register window fault: SP %016lx (orig_sp %016lx) TPC %08lx O7 %016lx\n"; + +void fault_in_user_windows(struct pt_regs *regs) { struct thread_info *t = current_thread_info(); unsigned long window; @@ -541,9 +547,9 @@ void fault_in_user_windows(void) do { struct reg_window *rwin = &t->reg_window[window]; int winsize = sizeof(struct reg_window); - unsigned long sp; + unsigned long sp, orig_sp; - sp = t->rwbuf_stkptrs[window]; + orig_sp = sp = t->rwbuf_stkptrs[window]; if (test_thread_64bit_stack(sp)) sp += STACK_BIAS; @@ -554,8 +560,16 @@ void fault_in_user_windows(void) stack_unaligned(sp); if (unlikely(copy_to_user((char __user *)sp, - rwin, winsize))) + rwin, winsize))) { + if (show_unhandled_signals) + printk_ratelimited(is_compat_task() ? + uwfault32 : uwfault64, + current->comm, current->pid, + sp, orig_sp, + regs->tpc, + regs->u_regs[UREG_I7]); goto barf; + } } while (window--); } set_thread_wsaved(0); @@ -563,8 +577,7 @@ void fault_in_user_windows(void) barf: set_thread_wsaved(window + 1); - user_exit(); - do_exit(SIGILL); + force_sig(SIGSEGV, current); } asmlinkage long sparc_do_fork(unsigned long clone_flags, diff --git a/arch/sparc/kernel/rtrap_64.S b/arch/sparc/kernel/rtrap_64.S index 0b21042ab181..ad88d60bb740 100644 --- a/arch/sparc/kernel/rtrap_64.S +++ b/arch/sparc/kernel/rtrap_64.S @@ -30,6 +30,7 @@ __handle_preemption: wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate __handle_user_windows: + add %sp, PTREGS_OFF, %o0 call fault_in_user_windows wrpr %g0, RTRAP_PSTATE, %pstate ba,pt %xcc, __handle_preemption_continue diff --git a/arch/sparc/kernel/signal32.c b/arch/sparc/kernel/signal32.c index 5c572de64c74..879f8d86bc21 100644 --- a/arch/sparc/kernel/signal32.c +++ b/arch/sparc/kernel/signal32.c @@ -442,7 +442,11 @@ static int setup_frame32(struct ksignal *ksig, struct pt_regs *regs, get_sigframe(ksig, regs, sigframe_size); if (invalid_frame_pointer(sf, sigframe_size)) { - do_exit(SIGILL); + if (show_unhandled_signals) + pr_info("%s[%d] bad frame in setup_frame32: %08lx TPC %08lx O7 %08lx\n", + current->comm, current->pid, (unsigned long)sf, + regs->tpc, regs->u_regs[UREG_I7]); + force_sigsegv(ksig->sig, current); return -EINVAL; } @@ -573,7 +577,11 @@ static int setup_rt_frame32(struct ksignal *ksig, struct pt_regs *regs, get_sigframe(ksig, regs, sigframe_size); if (invalid_frame_pointer(sf, sigframe_size)) { - do_exit(SIGILL); + if (show_unhandled_signals) + pr_info("%s[%d] bad frame in setup_rt_frame32: %08lx TPC %08lx O7 %08lx\n", + current->comm, current->pid, (unsigned long)sf, + regs->tpc, regs->u_regs[UREG_I7]); + force_sigsegv(ksig->sig, current); return -EINVAL; } diff --git a/arch/sparc/kernel/signal_64.c b/arch/sparc/kernel/signal_64.c index 20426a1c28f2..2d0a50bde3f9 100644 --- a/arch/sparc/kernel/signal_64.c +++ b/arch/sparc/kernel/signal_64.c @@ -373,7 +373,11 @@ setup_rt_frame(struct ksignal *ksig, struct pt_regs *regs) get_sigframe(ksig, regs, sf_size); if (invalid_frame_pointer (sf)) { - do_exit(SIGILL); /* won't return, actually */ + if (show_unhandled_signals) + pr_info("%s[%d] bad frame in setup_rt_frame: %016lx TPC %016lx O7 %016lx\n", + current->comm, current->pid, (unsigned long)sf, + regs->tpc, regs->u_regs[UREG_I7]); + force_sigsegv(ksig->sig, current); return -EINVAL; } diff --git a/arch/sparc/mm/init_64.c b/arch/sparc/mm/init_64.c index 984e9d65ea0d..76977296dc9c 100644 --- a/arch/sparc/mm/init_64.c +++ b/arch/sparc/mm/init_64.c @@ -1383,6 +1383,7 @@ int __node_distance(int from, int to) } return numa_latency[from][to]; } +EXPORT_SYMBOL(__node_distance); static int __init find_best_numa_node_for_mlgroup(struct mdesc_mlgroup *grp) { diff --git a/arch/sparc/mm/ultra.S b/arch/sparc/mm/ultra.S index d245f89d1395..d220b6848746 100644 --- a/arch/sparc/mm/ultra.S +++ b/arch/sparc/mm/ultra.S @@ -587,7 +587,7 @@ xcall_flush_tlb_kernel_range: /* 44 insns */ sub %g7, %g1, %g3 srlx %g3, 18, %g2 brnz,pn %g2, 2f - add %g2, 1, %g2 + sethi %hi(PAGE_SIZE), %g2 sub %g3, %g2, %g3 or %g1, 0x20, %g1 ! Nucleus 1: stxa %g0, [%g1 + %g3] ASI_DMMU_DEMAP @@ -751,7 +751,7 @@ __cheetah_xcall_flush_tlb_kernel_range: /* 44 insns */ sub %g7, %g1, %g3 srlx %g3, 18, %g2 brnz,pn %g2, 2f - add %g2, 1, %g2 + sethi %hi(PAGE_SIZE), %g2 sub %g3, %g2, %g3 or %g1, 0x20, %g1 ! Nucleus 1: stxa %g0, [%g1 + %g3] ASI_DMMU_DEMAP |