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| author | Martin KaFai Lau <kafai@fb.com> | 2020-11-16 12:01:13 -0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2020-11-16 16:46:01 -0800 |
| commit | b93ef089d35c3386dd197e85afb6399bbd54cfb3 (patch) | |
| tree | 11b857e0b9e1c1e5ffb9cd4d8b467fd20d87ccd6 /scripts/bpf_helpers_doc.py | |
| parent | 024cd2cbd1ca2d29e6df538855d52c4e5990cab7 (diff) | |
| download | linux-stable-b93ef089d35c3386dd197e85afb6399bbd54cfb3.tar.gz linux-stable-b93ef089d35c3386dd197e85afb6399bbd54cfb3.tar.bz2 linux-stable-b93ef089d35c3386dd197e85afb6399bbd54cfb3.zip | |
bpf: Fix the irq and nmi check in bpf_sk_storage for tracing usage
The intention of the current check is to avoid using bpf_sk_storage
in irq and nmi. Jakub pointed out that the current check cannot
do that. For example, in_serving_softirq() returns true
if the softirq handling is interrupted by hard irq.
Fixes: 8e4597c627fb ("bpf: Allow using bpf_sk_storage in FENTRY/FEXIT/RAW_TP")
Suggested-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20201116200113.2868539-1-kafai@fb.com
Diffstat (limited to 'scripts/bpf_helpers_doc.py')
0 files changed, 0 insertions, 0 deletions