The branch main has been updated by zec:
URL:
https://cgit.FreeBSD.org/src/commit/?id=eb3148cc4d256c20b5c7c9052539139b6f57f58b
commit eb3148cc4d256c20b5c7c9052539139b6f57f58b
Author: Marko Zec <z...@freebsd.org>
AuthorDate: 2021-09-16 14:34:05 +0000
Commit: Marko Zec <z...@freebsd.org>
CommitDate: 2021-09-16 14:34:05 +0000
[fib algo][dxr] Fix division by zero.
A division by zero would occur if DXR would be activated on a vnet
with no IP addresses configured on any interfaces.
PR: 257965
MFC after: 3 days
Reported by: Raul Munoz
---
sys/netinet/in_fib_dxr.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/sys/netinet/in_fib_dxr.c b/sys/netinet/in_fib_dxr.c
index 3c4e5700cd6c..3aa357cadedc 100644
--- a/sys/netinet/in_fib_dxr.c
+++ b/sys/netinet/in_fib_dxr.c
@@ -982,7 +982,9 @@ dxr2_try_squeeze:
FIB_PRINTF(LOG_INFO, da->fd, "D%dR, %d prefixes, %d nhops (max)",
DXR_D, rinfo.num_prefixes, rinfo.num_nhops);
#endif
- i = dxr_tot_size * 100 / rinfo.num_prefixes;
+ i = dxr_tot_size * 100;
+ if (rinfo.num_prefixes)
+ i /= rinfo.num_prefixes;
FIB_PRINTF(LOG_INFO, da->fd, "%d.%02d KBytes, %d.%02d Bytes/prefix",
dxr_tot_size / 1024, dxr_tot_size * 100 / 1024 % 100,
i / 100, i % 100);
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