From 836b2fe544a5e9b5ce116622cb36fba33838c6fd Mon Sep 17 00:00:00 2001 From: Eduard Zingerman Date: Fri, 4 Sep 2026 01:33:23 -0700 Subject: selftests/bpf: Check that JMP32 pointer vs zero jumps are not predicted Add jmp32_ptr_vs_zero_jne: the fall-through of the 32-bit compare, which the verifier used to skip, contains an out of bounds map value access, hence w/o the previous patch the program is accepted. See previous patch for detailed description. Reported-by: Nicholas Carlini Suggested-by: Nicholas Carlini Signed-off-by: Eduard Zingerman Link: https://lore.kernel.org/bpf/20260904083325.2083493-6-eddyz87@gmail.com Signed-off-by: Kumar Kartikeya Dwivedi --- tools/perf/ui/progress.c | 47 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 47 insertions(+) create mode 100644 tools/perf/ui/progress.c (limited to 'tools/perf/ui/progress.c') diff --git a/tools/perf/ui/progress.c b/tools/perf/ui/progress.c new file mode 100644 index 000000000..99d60223c --- /dev/null +++ b/tools/perf/ui/progress.c @@ -0,0 +1,47 @@ +// SPDX-License-Identifier: GPL-2.0 +#include +#include "progress.h" + +static void null_progress__update(struct ui_progress *p __maybe_unused) +{ +} + +static struct ui_progress_ops null_progress__ops = +{ + .update = null_progress__update, +}; + +struct ui_progress_ops *ui_progress__ops = &null_progress__ops; + +void ui_progress__update(struct ui_progress *p, u64 adv) +{ + u64 last = p->curr; + + p->curr += adv; + + if (p->curr >= p->next) { + u64 nr = DIV_ROUND_UP(p->curr - last, p->step); + + p->next += nr * p->step; + ui_progress__ops->update(p); + } +} + +void __ui_progress__init(struct ui_progress *p, u64 total, + const char *title, bool size) +{ + p->curr = 0; + p->next = p->step = total / 16 ?: 1; + p->total = total; + p->title = title; + p->size = size; + + if (ui_progress__ops->init) + ui_progress__ops->init(p); +} + +void ui_progress__finish(void) +{ + if (ui_progress__ops->finish) + ui_progress__ops->finish(); +} -- cgit v1.3.1