hi,
in net/bpf.c, bpfdetach(), stuct bpf_if *bp is used in a for loop, that,
if not terminated by break before, leaves bp == NULL.
evaluating (bp->bif_ifp == NULL) two lines later will cause a NULL pointer
dereference, resulting in trap 12.
please apply the attached patch.
best,
christian
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----------------------------
Index: bpf.c
===================================================================
RCS file: /usr/cvs/src/sys/net/bpf.c,v
retrieving revision 1.80
diff -r1.80 bpf.c
1267c1267
< if (bp->bif_ifp == NULL) {
---
> if (bp == NULL || bp->bif_ifp == NULL) {
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