Arnd Bergmann
c9b3b8207b
netfilter: nf_flow_table: fix big-endian integer overflow
...
In some configurations, gcc reports an integer overflow:
net/netfilter/nf_flow_table_offload.c: In function 'nf_flow_rule_match':
net/netfilter/nf_flow_table_offload.c:80:21: error: unsigned conversion from 'int' to '__be16' {aka 'short unsigned int'} changes value from '327680' to '0' [-Werror=overflow]
mask->tcp.flags = TCP_FLAG_RST | TCP_FLAG_FIN;
^~~~~~~~~~~~
From what I can tell, we want the upper 16 bits of these constants,
so they need to be shifted in cpu-endian mode.
Fixes: c29f74e0df7a ("netfilter: nf_flow_table: hardware offload support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
2019-12-20 02:12:18 +01:00
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