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bpf: Prevent increasing bpf_jit_limit above max

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[ Upstream commit fadb7ff1a6c2c565af56b4aacdd086b067eed440 ]

Restrict bpf_jit_limit to the maximum supported by the arch's JIT.

Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20211014142554.53120-4-lmb@cloudflare.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Lorenz Bauer
2021-10-14 15:25:53 +01:00
committed by Greg Kroah-Hartman
parent a3564fb7b0
commit b92ac0a9ca
3 changed files with 5 additions and 2 deletions
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2
net/core/sysctl_net_core.c
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@@ -419,7 +419,7 @@ static struct ctl_table net_core_table[] = {
.mode = 0600,
.proc_handler = proc_dolongvec_minmax_bpf_restricted,
.extra1 = &long_one,
.extra2 = &long_max,
.extra2 = &bpf_jit_limit_max,
},
#endif
{