The branch main has been updated by rmacklem: URL: https://cgit.FreeBSD.org/src/commit/?id=148a227bf80e9716ee26a8a6747961b5a639918b
commit 148a227bf80e9716ee26a8a6747961b5a639918b Author: Rick Macklem <[email protected]> AuthorDate: 2021-01-10 21:50:15 +0000 Commit: Rick Macklem <[email protected]> CommitDate: 2021-01-10 21:50:15 +0000 nfsd: add KASSERTs to nfsm_trimtrailing() for M_EXTPG mbufs Add KASSERTS to nfsm_trimtrailing() to confirm the sanity of the arguments for the M_EXTPG case. Suggested by: kib Reviewed by: kib Differential Revision: https://reviews.freebsd.org/D28053 --- sys/fs/nfsserver/nfs_nfsdport.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/sys/fs/nfsserver/nfs_nfsdport.c b/sys/fs/nfsserver/nfs_nfsdport.c index 727a83005fa0..8336a0b8fab2 100644 --- a/sys/fs/nfsserver/nfs_nfsdport.c +++ b/sys/fs/nfsserver/nfs_nfsdport.c @@ -6581,6 +6581,12 @@ nfsm_trimtrailing(struct nfsrv_descript *nd, struct mbuf *mb, char *bpos, mb->m_next = NULL; } if ((mb->m_flags & M_EXTPG) != 0) { + KASSERT(bextpg >= 0 && bextpg < mb->m_epg_npgs, + ("nfsm_trimtrailing: bextpg out of range")); + KASSERT(bpos == (char *)(void *) + PHYS_TO_DMAP(mb->m_epg_pa[bextpg]) + PAGE_SIZE - bextpgsiz, + ("nfsm_trimtrailing: bextpgsiz bad!")); + /* First, get rid of any pages after this position. */ for (i = mb->m_epg_npgs - 1; i > bextpg; i--) { pg = PHYS_TO_VM_PAGE(mb->m_epg_pa[i]); _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/dev-commits-src-all To unsubscribe, send any mail to "[email protected]"
