Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf updates from Thomas Gleixner:
 "A larger set of perf updates.

  Not all of them are strictly fixes, but that's solely the tip
  maintainers fault as they let the timely -rc1 pull request fall
  through the cracks for various reasons including travel. So I'm
  sending this nevertheless because rebasing and distangling fixes and
  updates would be a mess and risky as well. As of tomorrow, a strict
  fixes separation is happening again. Sorry for the slip-up.

  Kernel:

   - Handle RECORD_MMAP vs. RECORD_MMAP2 correctly so different
     consumers of the mmap event get what they requested.

  Tools:

   - A larger set of updates to perf record/report/scripts vs. time
     stamp handling

   - More Python3 fixups

   - A pile of memory leak plumbing

   - perf BPF improvements and fixes

   - Finalize the perf.data directory storage"

[ Note: the kernel part is strictly a fix, the updates are purely to
  tooling       - Linus ]

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (75 commits)
  perf bpf: Show more BPF program info in print_bpf_prog_info()
  perf bpf: Extract logic to create program names from perf_event__synthesize_one_bpf_prog()
  perf tools: Save bpf_prog_info and BTF of new BPF programs
  perf evlist: Introduce side band thread
  perf annotate: Enable annotation of BPF programs
  perf build: Check what binutils's 'disassembler()' signature to use
  perf bpf: Process PERF_BPF_EVENT_PROG_LOAD for annotation
  perf symbols: Introduce DSO_BINARY_TYPE__BPF_PROG_INFO
  perf feature detection: Add -lopcodes to feature-libbfd
  perf top: Add option --no-bpf-event
  perf bpf: Save BTF information as headers to perf.data
  perf bpf: Save BTF in a rbtree in perf_env
  perf bpf: Save bpf_prog_info information as headers to perf.data
  perf bpf: Save bpf_prog_info in a rbtree in perf_env
  perf bpf: Make synthesize_bpf_events() receive perf_session pointer instead of perf_tool
  perf bpf: Synthesize bpf events with bpf_program__get_prog_info_linear()
  bpftool: use bpf_program__get_prog_info_linear() in prog.c:do_dump()
  tools lib bpf: Introduce bpf_program__get_prog_info_linear()
  perf record: Replace option --bpf-event with --no-bpf-event
  perf tests: Fix a memory leak in test__perf_evsel__tp_sched_test()
  ...

1 files changed, 7 insertions, 3 deletions

diff --git a/tools/perf/ui/browser.c b/tools/perf/ui/browser.c
index 4f75561424ed..4ad37d8c7d6a 100644
--- a/tools/perf/ui/browser.c
+++ b/tools/perf/ui/browser.c
@@ -611,14 +611,16 @@ void ui_browser__argv_seek(struct ui_browser *browser, off_t offset, int whence)
 		browser->top = browser->entries;
 		break;
 	case SEEK_CUR:
-		browser->top = browser->top + browser->top_idx + offset;
+		browser->top = (char **)browser->top + offset;
 		break;
 	case SEEK_END:
-		browser->top = browser->top + browser->nr_entries - 1 + offset;
+		browser->top = (char **)browser->entries + browser->nr_entries - 1 + offset;
 		break;
 	default:
 		return;
 	}
+	assert((char **)browser->top < (char **)browser->entries + browser->nr_entries);
+	assert((char **)browser->top >= (char **)browser->entries);
 }
 
 unsigned int ui_browser__argv_refresh(struct ui_browser *browser)
@@ -630,7 +632,9 @@ unsigned int ui_browser__argv_refresh(struct ui_browser *browser)
 		browser->top = browser->entries;
 
 	pos = (char **)browser->top;
-	while (idx < browser->nr_entries) {
+	while (idx < browser->nr_entries &&
+	       row < (unsigned)SLtt_Screen_Rows - 1) {
+		assert(pos < (char **)browser->entries + browser->nr_entries);
 		if (!browser->filter || !browser->filter(browser, *pos)) {
 			ui_browser__gotorc(browser, row, 0);
 			browser->write(browser, pos, row);