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D57814.id180522.diff
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D57814.id180522.diff
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diff --git a/sys/netinet/tcp_stacks/sack_filter.c b/sys/netinet/tcp_stacks/sack_filter.c
--- a/sys/netinet/tcp_stacks/sack_filter.c
+++ b/sys/netinet/tcp_stacks/sack_filter.c
@@ -662,7 +662,8 @@
/* <or> */
/* sf-blk |---------| */
sf->sf_bits = sack_blk_clr(sf, i);
- sf->sf_used--;
+ if (sf->sf_used > 0)
+ sf->sf_used--;
}
continue;
}
@@ -678,7 +679,8 @@
/* <or> */
/* sf-blk |----------| */
sf->sf_bits = sack_blk_clr(sf, i);
- sf->sf_used--;
+ if (sf->sf_used > 0)
+ sf->sf_used--;
}
continue;
}
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D57814.id180522.diff (1020 B)
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D57814: sack_filter: sack_filter_reject underflow guard
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