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| author |   Florent Revest <revest@chromium.org> | 2021-04-27 13:29:58 +0200 |
|---|---|---|
| committer |   Alexei Starovoitov <ast@kernel.org> | 2021-04-27 08:04:34 -0700 |
| commit | 38d26d89b31d0766d431471572cc9b007ca19c98 (patch) | |
| tree | 2a4348b2fd79659c65fdade471284cd6108b58ff /kernel/nsproxy.c | |
| parent | Merge branch 'CO-RE relocation selftests fixes' (diff) | |
| download | linux-dev-38d26d89b31d0766d431471572cc9b007ca19c98.tar.xz linux-dev-38d26d89b31d0766d431471572cc9b007ca19c98.zip | |
bpf: Lock bpf_trace_printk's tmp buf before it is written to
bpf_trace_printk uses a shared static buffer to hold strings before they
are printed. A recent refactoring moved the locking of that buffer after
it gets filled by mistake.
Fixes: d9c9e4db186a ("bpf: Factorize bpf_trace_printk and bpf_seq_printf")
Reported-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Signed-off-by: Florent Revest <revest@chromium.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210427112958.773132-1-revest@chromium.org
Diffstat (limited to 'kernel/nsproxy.c')
0 files changed, 0 insertions, 0 deletions