https://github.com/torvalds/linux
Revision 333291ce5055f2039afc907badaf5b66bc1adfdc authored by Andrii Nakryiko on 12 May 2020, 23:59:25 UTC, committed by Alexei Starovoitov on 14 May 2020, 19:40:04 UTC
mmap() subsystem allows user-space application to memory-map region with
initial page offset. This wasn't taken into account in initial implementation
of BPF array memory-mapping. This would result in wrong pages, not taking into
account requested page shift, being memory-mmaped into user-space. This patch
fixes this gap and adds a test for such scenario.

Fixes: fc9702273e2e ("bpf: Add mmap() support for BPF_MAP_TYPE_ARRAY")
Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Yonghong Song <yhs@fb.com>
Link: https://lore.kernel.org/bpf/20200512235925.3817805-1-andriin@fb.com
1 parent 23ad046
History
Tip revision: 333291ce5055f2039afc907badaf5b66bc1adfdc authored by Andrii Nakryiko on 12 May 2020, 23:59:25 UTC
bpf: Fix bug in mmap() implementation for BPF array map
Tip revision: 333291c
File Mode Size
Documentation
LICENSES
arch
block
certs
crypto
drivers
fs
include
init
ipc
kernel
lib
mm
net
samples
scripts
security
sound
tools
usr
virt
.clang-format -rw-r--r-- 15.8 KB
.cocciconfig -rw-r--r-- 59 bytes
.get_maintainer.ignore -rw-r--r-- 71 bytes
.gitattributes -rw-r--r-- 62 bytes
.gitignore -rw-r--r-- 1.7 KB
.mailmap -rw-r--r-- 15.1 KB
COPYING -rw-r--r-- 496 bytes
CREDITS -rw-r--r-- 97.4 KB
Kbuild -rw-r--r-- 1.3 KB
Kconfig -rw-r--r-- 595 bytes
MAINTAINERS -rw-r--r-- 539.5 KB
Makefile -rw-r--r-- 59.9 KB
README -rw-r--r-- 727 bytes

README

back to top