diff options
Diffstat (limited to 'arch/powerpc/perf/core-book3s.c')
| -rw-r--r-- | arch/powerpc/perf/core-book3s.c | 8 |
1 files changed, 1 insertions, 7 deletions
diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c index 48604625ab31..3086055bf681 100644 --- a/arch/powerpc/perf/core-book3s.c +++ b/arch/powerpc/perf/core-book3s.c @@ -415,7 +415,6 @@ static void power_pmu_sched_task(struct perf_event_context *ctx, bool sched_in) static __u64 power_pmu_bhrb_to(u64 addr) { unsigned int instr; - int ret; __u64 target; if (is_kernel_addr(addr)) { @@ -426,13 +425,8 @@ static __u64 power_pmu_bhrb_to(u64 addr) } /* Userspace: need copy instruction here then translate it */ - pagefault_disable(); - ret = __get_user_inatomic(instr, (unsigned int __user *)addr); - if (ret) { - pagefault_enable(); + if (probe_user_read(&instr, (unsigned int __user *)addr, sizeof(instr))) return 0; - } - pagefault_enable(); target = branch_target(&instr); if ((!target) || (instr & BRANCH_ABSOLUTE)) |