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| author | Tushar Dave <tushar.n.dave@oracle.com> | 2018-09-12 23:15:29 +0300 |
|---|---|---|
| committer | Daniel Borkmann <daniel@iogearbox.net> | 2018-09-13 00:47:28 +0300 |
| commit | 4c3d795cb012a378855543a775408fba1ccff6f2 (patch) | |
| tree | 05b7ab8eac84d394f4c9688a7e2ced12af525b25 /tools/perf/scripts/python/check-perf-trace.py | |
| parent | dd066823db2ac4e22f721ec85190817b58059a54 (diff) | |
| download | linux-4c3d795cb012a378855543a775408fba1ccff6f2.tar.xz | |
bpf: use __GFP_COMP while allocating page
Helper bpg_msg_pull_data() can allocate multiple pages while
linearizing multiple scatterlist elements into one shared page.
However, if the shared page has size > PAGE_SIZE, using
copy_page_to_iter() causes below warning.
e.g.
[ 6367.019832] WARNING: CPU: 2 PID: 7410 at lib/iov_iter.c:825
page_copy_sane.part.8+0x0/0x8
To avoid above warning, use __GFP_COMP while allocating multiple
contiguous pages.
Fixes: 015632bb30da ("bpf: sk_msg program helper bpf_sk_msg_pull_data")
Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions