Brendan Jackman 4aae6eb6af libbpf: Fix signed overflow in ringbuf_process_ring ... [ Upstream commit 2a30f9440640c418bcfbea9b2b344d268b58e0a2 ] One of our benchmarks running in (Google-internal) CI pushes data through the ringbuf faster htan than userspace is able to consume it. In this case it seems we're actually able to get >INT_MAX entries in a single ring_buffer__consume() call. ASAN detected that cnt overflows in this case. Fix by using 64-bit counter internally and then capping the result to INT_MAX before converting to the int return type. Do the same for the ring_buffer__poll(). Fixes: bf99c936f9 (libbpf: Add BPF ring buffer support) Signed-off-by: Brendan Jackman <jackmanb@google.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20210429130510.1621665-1-jackmanb@google.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-05-19 10:13:06 +02:00
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api	libperf: Avoid counting of nonfilterable fdarray fds	2020-07-21 09:53:22 -03:00
bpf	libbpf: Fix signed overflow in ringbuf_process_ring	2021-05-19 10:13:06 +02:00
lockdep	.gitignore: add SPDX License Identifier	2020-03-25 11:50:48 +01:00
perf	perf jit: Let convert_timestamp() to be backwards-compatible	2021-05-14 09:50:44 +02:00
subcmd	tools: Avoid comma separated statements	2020-10-02 10:36:36 -06:00
symbol	libsymbols kallsyms: Move hex2u64 out of header	2020-05-05 16:35:32 -03:00
traceevent	tools lib traceevent: Hide non API functions	2020-10-13 11:47:38 -03:00
argv_split.c	tools lib: Move argv_{split,free} from tools/perf/util/	2019-07-01 22:50:40 -03:00
bitmap.c	tools bitmap: Implement bitmap_equal() operation at bitmap API	2020-01-06 11:46:04 -03:00
ctype.c	tools perf: Move from sane_ctype.h obtained from git to the Linux's original	2019-06-25 21:02:47 -03:00
find_bit.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
hweight.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
rbtree.c	tools/: replace HTTP links with HTTPS ones	2020-08-07 11:33:21 -07:00
str_error_r.c	objtool, perf: Fix GCC 8 -Wrestrict error	2018-03-19 13:51:54 -03:00
string.c	tools lib: Fix builds when glibc contains strlcpy()	2020-01-06 11:46:10 -03:00
vsprintf.c	perf script: Pad DSO name for --call-trace	2019-05-28 18:37:44 -03:00
zalloc.c	tools lib: Adopt zalloc()/zfree() from tools/perf	2019-07-09 10:13:26 -03:00