netfilter: xtables: print details on size mismatch
Print which revision has been used and which size are which (kernel/user) for easier debugging. Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
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@ -366,8 +366,10 @@ int xt_check_match(struct xt_mtchk_param *par,
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* ebt_among is exempt from centralized matchsize checking
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* ebt_among is exempt from centralized matchsize checking
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* because it uses a dynamic-size data set.
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* because it uses a dynamic-size data set.
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*/
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*/
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pr_err("%s_tables: %s match: invalid size %u != %u\n",
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pr_err("%s_tables: %s.%u match: invalid size "
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"%u (kernel) != (user) %u\n",
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xt_prefix[par->family], par->match->name,
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xt_prefix[par->family], par->match->name,
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par->match->revision,
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XT_ALIGN(par->match->matchsize), size);
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XT_ALIGN(par->match->matchsize), size);
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return -EINVAL;
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return -EINVAL;
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}
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}
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@ -516,8 +518,10 @@ int xt_check_target(struct xt_tgchk_param *par,
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unsigned int size, u_int8_t proto, bool inv_proto)
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unsigned int size, u_int8_t proto, bool inv_proto)
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{
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{
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if (XT_ALIGN(par->target->targetsize) != size) {
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if (XT_ALIGN(par->target->targetsize) != size) {
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pr_err("%s_tables: %s target: invalid size %u != %u\n",
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pr_err("%s_tables: %s.%u target: invalid size "
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"%u (kernel) != (user) %u\n",
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xt_prefix[par->family], par->target->name,
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xt_prefix[par->family], par->target->name,
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par->target->revision,
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XT_ALIGN(par->target->targetsize), size);
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XT_ALIGN(par->target->targetsize), size);
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return -EINVAL;
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return -EINVAL;
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}
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}
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