Gianluca Borello f0318d01b6 bpf: allow adjusted map element values to spill ... commit 484611357c ("bpf: allow access into map value arrays") introduces the ability to do pointer math inside a map element value via the PTR_TO_MAP_VALUE_ADJ register type. The current support doesn't handle the case where a PTR_TO_MAP_VALUE_ADJ is spilled into the stack, limiting several use cases, especially when generating bpf code from a compiler. Handle this case by explicitly enabling the register type PTR_TO_MAP_VALUE_ADJ to be spilled. Also, make sure that min_value and max_value are reset just for BPF_LDX operations that don't result in a restore of a spilled register from stack. Signed-off-by: Gianluca Borello <g.borello@gmail.com> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-01-09 16:56:27 -05:00
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.gitignore	bpf: Preserve const register type on const OR alu ops	2016-12-05 13:40:05 -05:00
bpf_sys.h	bpf: add initial suite for selftests	2016-10-18 11:35:55 -04:00
bpf_util.h	bpf: fix multiple issues in selftest suite and samples	2016-11-27 20:38:47 -05:00
config	bpf: add initial suite for selftests	2016-10-18 11:35:55 -04:00
Makefile	bpf: Add tests for the LRU bpf_htab	2016-11-15 11:50:43 -05:00
test_kmod.sh	bpf: add initial suite for selftests	2016-10-18 11:35:55 -04:00
test_lru_map.c	bpf: fix multiple issues in selftest suite and samples	2016-11-27 20:38:47 -05:00
test_maps.c	bpf: fix multiple issues in selftest suite and samples	2016-11-27 20:38:47 -05:00
test_verifier.c	bpf: allow adjusted map element values to spill	2017-01-09 16:56:27 -05:00