diff options
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/percpu.h | 2 | ||||
| -rw-r--r-- | arch/s390/kernel/dumpstack.c | 2 | ||||
| -rw-r--r-- | arch/s390/kernel/kprobes.c | 4 | ||||
| -rw-r--r-- | arch/s390/kernel/nmi.c | 2 | ||||
| -rw-r--r-- | arch/s390/kernel/ptrace.c | 8 | ||||
| -rw-r--r-- | arch/s390/kernel/setup.c | 1 | ||||
| -rw-r--r-- | arch/s390/kernel/vmlinux.lds.S | 1 | ||||
| -rw-r--r-- | arch/s390/lib/uaccess.c | 2 | ||||
| -rw-r--r-- | arch/s390/mm/maccess.c | 16 |
9 files changed, 21 insertions, 17 deletions
diff --git a/arch/s390/include/asm/percpu.h b/arch/s390/include/asm/percpu.h index 50f6661ba..026a94b03 100644 --- a/arch/s390/include/asm/percpu.h +++ b/arch/s390/include/asm/percpu.h @@ -31,7 +31,7 @@ pcp_op_T__ *ptr__; \ preempt_disable_notrace(); \ ptr__ = raw_cpu_ptr(&(pcp)); \ - prev__ = *ptr__; \ + prev__ = READ_ONCE(*ptr__); \ do { \ old__ = prev__; \ new__ = old__ op (val); \ diff --git a/arch/s390/kernel/dumpstack.c b/arch/s390/kernel/dumpstack.c index 5b23c4f6e..7b2101909 100644 --- a/arch/s390/kernel/dumpstack.c +++ b/arch/s390/kernel/dumpstack.c @@ -187,5 +187,5 @@ void die(struct pt_regs *regs, const char *str) if (panic_on_oops) panic("Fatal exception: panic_on_oops"); oops_exit(); - do_exit(SIGSEGV); + make_task_dead(SIGSEGV); } diff --git a/arch/s390/kernel/kprobes.c b/arch/s390/kernel/kprobes.c index 7c0a095e9..b52ca21be 100644 --- a/arch/s390/kernel/kprobes.c +++ b/arch/s390/kernel/kprobes.c @@ -254,6 +254,7 @@ static void pop_kprobe(struct kprobe_ctlblk *kcb) { __this_cpu_write(current_kprobe, kcb->prev_kprobe.kp); kcb->kprobe_status = kcb->prev_kprobe.status; + kcb->prev_kprobe.kp = NULL; } NOKPROBE_SYMBOL(pop_kprobe); @@ -508,12 +509,11 @@ static int post_kprobe_handler(struct pt_regs *regs) if (!p) return 0; + resume_execution(p, regs); if (kcb->kprobe_status != KPROBE_REENTER && p->post_handler) { kcb->kprobe_status = KPROBE_HIT_SSDONE; p->post_handler(p, regs, 0); } - - resume_execution(p, regs); pop_kprobe(kcb); preempt_enable_no_resched(); diff --git a/arch/s390/kernel/nmi.c b/arch/s390/kernel/nmi.c index 8c867b43c..471a965ae 100644 --- a/arch/s390/kernel/nmi.c +++ b/arch/s390/kernel/nmi.c @@ -179,7 +179,7 @@ void s390_handle_mcck(void) "malfunction (code 0x%016lx).\n", mcck.mcck_code); printk(KERN_EMERG "mcck: task: %s, pid: %d.\n", current->comm, current->pid); - do_exit(SIGSEGV); + make_task_dead(SIGSEGV); } } EXPORT_SYMBOL_GPL(s390_handle_mcck); diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c index 3ffa2847c..c36289a3a 100644 --- a/arch/s390/kernel/ptrace.c +++ b/arch/s390/kernel/ptrace.c @@ -503,9 +503,7 @@ long arch_ptrace(struct task_struct *child, long request, } return 0; case PTRACE_GET_LAST_BREAK: - put_user(child->thread.last_break, - (unsigned long __user *) data); - return 0; + return put_user(child->thread.last_break, (unsigned long __user *)data); case PTRACE_ENABLE_TE: if (!MACHINE_HAS_TE) return -EIO; @@ -857,9 +855,7 @@ long compat_arch_ptrace(struct task_struct *child, compat_long_t request, } return 0; case PTRACE_GET_LAST_BREAK: - put_user(child->thread.last_break, - (unsigned int __user *) data); - return 0; + return put_user(child->thread.last_break, (unsigned int __user *)data); } return compat_ptrace_request(child, request, addr, data); } diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index bfd6c01a6..f54f5bfd8 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -909,6 +909,7 @@ void __init setup_arch(char **cmdline_p) if (IS_ENABLED(CONFIG_EXPOLINE_AUTO)) nospec_auto_detect(); + jump_label_init(); parse_early_param(); #ifdef CONFIG_CRASH_DUMP /* Deactivate elfcorehdr= kernel parameter */ diff --git a/arch/s390/kernel/vmlinux.lds.S b/arch/s390/kernel/vmlinux.lds.S index 160a05c6c..04c3e56da 100644 --- a/arch/s390/kernel/vmlinux.lds.S +++ b/arch/s390/kernel/vmlinux.lds.S @@ -153,5 +153,6 @@ SECTIONS DISCARDS /DISCARD/ : { *(.eh_frame) + *(.interp) } } diff --git a/arch/s390/lib/uaccess.c b/arch/s390/lib/uaccess.c index 0267405ab..fcfd78f99 100644 --- a/arch/s390/lib/uaccess.c +++ b/arch/s390/lib/uaccess.c @@ -339,7 +339,7 @@ static inline unsigned long clear_user_mvcos(void __user *to, unsigned long size "4: slgr %0,%0\n" "5:\n" EX_TABLE(0b,2b) EX_TABLE(3b,5b) - : "+a" (size), "+a" (to), "+a" (tmp1), "=a" (tmp2) + : "+&a" (size), "+&a" (to), "+a" (tmp1), "=&a" (tmp2) : "a" (empty_zero_page), "d" (reg0) : "cc", "memory"); return size; } diff --git a/arch/s390/mm/maccess.c b/arch/s390/mm/maccess.c index 7be064758..a40739ea3 100644 --- a/arch/s390/mm/maccess.c +++ b/arch/s390/mm/maccess.c @@ -58,13 +58,19 @@ static notrace long s390_kernel_write_odd(void *dst, const void *src, size_t siz */ void notrace s390_kernel_write(void *dst, const void *src, size_t size) { + unsigned long flags; long copied; - while (size) { - copied = s390_kernel_write_odd(dst, src, size); - dst += copied; - src += copied; - size -= copied; + flags = arch_local_save_flags(); + if (!(flags & PSW_MASK_DAT)) { + memcpy(dst, src, size); + } else { + while (size) { + copied = s390_kernel_write_odd(dst, src, size); + dst += copied; + src += copied; + size -= copied; + } } } |