1 files changed, 4 insertions, 0 deletions

diff --git a/kernel/events/core.c b/kernel/events/core.c
index abaed4f8bb7f..c80549bf82c6 100644
--- a/kernel/events/core.c
+++ b/kernel/events/core.c
@@ -5943,6 +5943,7 @@ perf_output_sample_ustack(struct perf_output_handle *handle, u64 dump_size,
                 unsigned long sp;
                 unsigned int rem;
                 u64 dyn_size;
+                mm_segment_t fs;
 
                 /*
                  * We dump:
@@ -5960,7 +5961,10 @@ perf_output_sample_ustack(struct perf_output_handle *handle, u64 dump_size,
 
                 /* Data. */
                 sp = perf_user_stack_pointer(regs);
+                fs = get_fs();
+                set_fs(USER_DS);
                 rem = __output_copy_user(handle, (void *) sp, dump_size);
+                set_fs(fs);
                 dyn_size = dump_size - rem;
 
                 perf_output_skip(handle, rem);