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bpf/verifier: increase complexity limit to 128k 

The more detailed value tracking can reduce the effectiveness of pruning
 for some programs.  So, to avoid rejecting previously valid programs, up
 the limit to 128kinsns.  Hopefully we will be able to bring this back
 down later by improving pruning performance.

Signed-off-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
hifive-unleashed-5.1
Edward Cree 2017-08-07 15:30:30 +01:00 committed by David S. Miller
parent 0cbf474165
commit 8e17c1b162
1 changed files with 1 additions and 1 deletions
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kernel/bpf/verifier.c
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@ -140,7 +140,7 @@ struct bpf_verifier_stack_elem {
struct bpf_verifier_stack_elem *next;
};
#define BPF_COMPLEXITY_LIMIT_INSNS 98304
#define BPF_COMPLEXITY_LIMIT_INSNS 131072
#define BPF_COMPLEXITY_LIMIT_STACK 1024
#define BPF_MAP_PTR_POISON ((void *)0xeB9F + POISON_POINTER_DELTA)