Hou Tao 8a549ab672 libbpf: Handle size overflow for ringbuf mmap ... [ Upstream commit 927cbb478adf917e0a142b94baa37f06279cc466 ] The maximum size of ringbuf is 2GB on x86-64 host, so 2 * max_entries will overflow u32 when mapping producer page and data pages. Only casting max_entries to size_t is not enough, because for 32-bits application on 64-bits kernel the size of read-only mmap region also could overflow size_t. So fixing it by casting the size of read-only mmap region into a __u64 and checking whether or not there will be overflow during mmap. Fixes: bf99c936f9 ("libbpf: Add BPF ring buffer support") Signed-off-by: Hou Tao <houtao1@huawei.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20221116072351.1168938-3-houtao@huaweicloud.com Signed-off-by: Sasha Levin <sashal@kernel.org>		2022-12-08 11:23:54 +01:00
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api	libperf: Avoid counting of nonfilterable fdarray fds	2020-07-21 09:53:22 -03:00
bpf	libbpf: Handle size overflow for ringbuf mmap	2022-12-08 11:23:54 +01:00
lockdep	…
perf	perf tools: Fix segfault accessing sample_id xyarray	2022-04-27 13:53:46 +02:00
subcmd	libsubcmd: Fix use-after-free for realloc(..., 0)	2022-02-23 12:01:02 +01:00
symbol	…
traceevent	tools lib traceevent: Hide non API functions	2020-10-13 11:47:38 -03:00
argv_split.c	…
bitmap.c	…
ctype.c	…
find_bit.c	…
hweight.c	…
rbtree.c	tools/: replace HTTP links with HTTPS ones	2020-08-07 11:33:21 -07:00
str_error_r.c	…
string.c	tools lib: Adopt memchr_inv() from kernel	2021-09-26 14:08:57 +02:00
vsprintf.c	…
zalloc.c	…