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authorJules Irenge <jbi.octave@gmail.com>2020-03-11 04:09:01 +0300
committerDaniel Borkmann <daniel@iogearbox.net>2020-03-13 22:55:07 +0300
commitdcce11d545cc5d04c3fb529a8e2a0da987389139 (patch)
treed235ecfa4fa2b74ecdb43d8371d8fac296ec804a
parent5996a587a466fa469531272139d23a3b56e07e5c (diff)
downloadlinux-dcce11d545cc5d04c3fb529a8e2a0da987389139.tar.xz
bpf: Add missing annotations for __bpf_prog_enter() and __bpf_prog_exit()
Sparse reports a warning at __bpf_prog_enter() and __bpf_prog_exit() warning: context imbalance in __bpf_prog_enter() - wrong count at exit warning: context imbalance in __bpf_prog_exit() - unexpected unlock The root cause is the missing annotation at __bpf_prog_enter() and __bpf_prog_exit() Add the missing __acquires(RCU) annotation Add the missing __releases(RCU) annotation Signed-off-by: Jules Irenge <jbi.octave@gmail.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Link: https://lore.kernel.org/bpf/20200311010908.42366-2-jbi.octave@gmail.com
-rw-r--r--kernel/bpf/trampoline.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/bpf/trampoline.c b/kernel/bpf/trampoline.c
index f42f700c1d28..f30bca2a4d01 100644
--- a/kernel/bpf/trampoline.c
+++ b/kernel/bpf/trampoline.c
@@ -352,6 +352,7 @@ out:
* call __bpf_prog_exit
*/
u64 notrace __bpf_prog_enter(void)
+ __acquires(RCU)
{
u64 start = 0;
@@ -363,6 +364,7 @@ u64 notrace __bpf_prog_enter(void)
}
void notrace __bpf_prog_exit(struct bpf_prog *prog, u64 start)
+ __releases(RCU)
{
struct bpf_prog_stats *stats;