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net/sfc: fix double free on encap transfer flow rule path

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Don't free the outer match spec by its pointer in the parsing context
if it has already been tracked by an entry in the outer rule registry.

Fixes: dadff13793 ("net/sfc: support encap flow items in transfer rules")

Signed-off-by: Ivan Malov <ivan.malov@oktetlabs.ru>
Acked-by: Andrew Rybchenko <andrew.rybchenko@oktetlabs.ru>
This commit is contained in:
Ivan Malov 2020-11-16 22:23:03 +03:00 committed by Ferruh Yigit
parent aba2af9936
commit 450b53f3f2
1 changed files with 5 additions and 1 deletions
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6
drivers/net/sfc/sfc_mae.c
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@ -1607,6 +1607,9 @@ sfc_mae_rule_process_outer(struct sfc_adapter *sa,
}
}
/* The spec has now been tracked by the outer rule entry. */
ctx->match_spec_outer = NULL;
/*
* Depending on whether we reuse an existing outer rule or create a
* new one (see above), outer rule ID is either a valid value or
@ -1717,7 +1720,8 @@ sfc_mae_rule_encap_parse_fini(struct sfc_adapter *sa,
if (ctx->encap_type == EFX_TUNNEL_PROTOCOL_NONE)
return;
efx_mae_match_spec_fini(sa->nic, ctx->match_spec_outer);
if (ctx->match_spec_outer != NULL)
efx_mae_match_spec_fini(sa->nic, ctx->match_spec_outer);
}
int