Jose E. Marchesi 009367099e bpf: Avoid uninitialized value in BPF_CORE_READ_BITFIELD ... [Changes from V1: - Use a default branch in the switch statement to initialize `val'.] GCC warns that `val' may be used uninitialized in the BPF_CRE_READ_BITFIELD macro, defined in bpf_core_read.h as: [...] unsigned long long val; \ [...] \ switch (__CORE_RELO(s, field, BYTE_SIZE)) { \ case 1: val = *(const unsigned char *)p; break; \ case 2: val = *(const unsigned short *)p; break; \ case 4: val = *(const unsigned int *)p; break; \ case 8: val = *(const unsigned long long *)p; break; \ } \ [...] val; \ } \ This patch adds a default entry in the switch statement that sets `val' to zero in order to avoid the warning, and random values to be used in case __builtin_preserve_field_info returns unexpected values for BPF_FIELD_BYTE_SIZE. Tested in bpf-next master. No regressions. Signed-off-by: Jose E. Marchesi <jose.marchesi@oracle.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20240508101313.16662-1-jose.marchesi@oracle.com		2024-05-08 15:00:55 -07:00
..
api	tools api fs: Avoid reading whole file for a 1 byte bool	2023-11-30 19:25:19 -03:00
bpf	bpf: Avoid uninitialized value in BPF_CORE_READ_BITFIELD	2024-05-08 15:00:55 -07:00
perf	libperf evlist: Avoid out-of-bounds access	2024-02-29 13:57:02 -08:00
subcmd	tools subcmd: Add a no exec function call option	2024-02-22 09:12:25 -08:00
symbol	tools lib symbol: Add dependency test to install_headers	2022-12-14 11:16:12 -03:00
thermal	tools/lib/thermal: Fix include path for libnl3 in pkg-config file.	2023-02-15 17:29:40 +01:00
argv_split.c
bitmap.c	Bitmap patches for v6.0-rc1	2022-08-07 17:52:35 -07:00
ctype.c
find_bit.c	tools: sync find_bit() implementation	2022-09-21 12:21:44 -07:00
hweight.c
list_sort.c	tools lib: Adopt list_sort() from the kernel sources	2021-10-20 10:30:59 -03:00
rbtree.c
slab.c	tools: Move gfp.h and slab.h from radix-tree to lib	2022-02-20 08:44:37 +02:00
str_error_r.c
string.c
vsprintf.c
zalloc.c