diff options
| author | Russell King <rmk+kernel@armlinux.org.uk> | 2018-01-13 17:38:18 -0500 |
|---|---|---|
| committer | Russell King <rmk+kernel@armlinux.org.uk> | 2018-01-17 14:38:07 -0500 |
| commit | 02088d9b392f605c892894b46aa8c83e3abd0115 (patch) | |
| tree | 7dd2b1eb8b47f46e6d621a81a745d4158a002182 /tools/perf/scripts/python/check-perf-trace.py | |
| parent | 0005e55a79cfda88199e41a406a829c88d708c67 (diff) | |
ARM: net: bpf: fix register saving
When an eBPF program tail-calls another eBPF program, it enters it after
the prologue to avoid having complex stack manipulations. This can lead
to kernel oopses, and similar.
Resolve this by always using a fixed stack layout, a CPU register frame
pointer, and using this when reloading registers before returning.
Fixes: 39c13c204bb1 ("arm: eBPF JIT compiler")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'tools/perf/scripts/python/check-perf-trace.py')
0 files changed, 0 insertions, 0 deletions