diff options
| author | Rabin Vincent <rabin@rab.in> | 2016-01-12 22:17:08 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-01-12 23:55:39 +0300 |
| commit | 06928b3870d213cb42b00e2949419f2d44b9d45f (patch) | |
| tree | d1427c587b190b02f7d2e5b842c1804f38386128 /tools | |
| parent | 03d84a5f83a67e692af00a3d3901e7820e3e84d5 (diff) | |
| download | linux-06928b3870d213cb42b00e2949419f2d44b9d45f.tar.xz | |
net: bpf: reject invalid shifts
On ARM64, a BUG() is triggered in the eBPF JIT if a filter with a
constant shift that can't be encoded in the immediate field of the
UBFM/SBFM instructions is passed to the JIT. Since these shifts
amounts, which are negative or >= regsize, are invalid, reject them in
the eBPF verifier and the classic BPF filter checker, for all
architectures.
Signed-off-by: Rabin Vincent <rabin@rab.in>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools')
0 files changed, 0 insertions, 0 deletions