Konstantin Belousov 5fc9e11c42 Save lower root vnode in nullfs mnt data instead of upper. ... Nullfs needs to know the root vnode of the lower fs during the operation. Currently it caches the upper vnode of it, which is also the root of the nullfs mount. On unmount, nullfs calls vflush() with rootrefs == 1, and aborts non-forced unmount if there are any more vnodes instantiated during vflush(). This means that the reference to the root vnode after failed non-forced unmount could be lost and nullm_rootvp points to the freed memory. Fix it by storing the reference for lower vnode instead, which is kept intact during vflush(). nullfs_root() now instantiates the upper vnode of lower root. Care about VV_ROOT flag in null_nodeget(). Reported and tested by: pho Sponsored by: The FreeBSD Foundation MFC after: 1 week		2020-01-28 11:29:06 +00:00
..
autofs	vfs: drop the mostly unused flags argument from VOP_UNLOCK	2020-01-03 22:29:58 +00:00
cd9660	vfs: drop the mostly unused flags argument from VOP_UNLOCK	2020-01-03 22:29:58 +00:00
cuse	Free all allocated unit IDs in cuse(3) after the client character	2019-06-25 11:46:01 +00:00
deadfs	vfs: flatten vop vectors	2019-12-16 00:06:22 +00:00
devfs	vfs: drop the mostly unused flags argument from VOP_UNLOCK	2020-01-03 22:29:58 +00:00
ext2fs	vfs: drop the mostly unused flags argument from VOP_UNLOCK	2020-01-03 22:29:58 +00:00
fdescfs	vfs: drop the mostly unused flags argument from VOP_UNLOCK	2020-01-03 22:29:58 +00:00
fifofs	vfs: drop the mostly unused flags argument from VOP_UNLOCK	2020-01-03 22:29:58 +00:00
fuse	fusefs: add missing CLTFLAG_MPSAFE annotation	2020-01-15 01:31:28 +00:00
msdosfs	Allow bootstrapping makefs on older FreeBSD hosts and Linux/macOS	2020-01-27 12:02:41 +00:00
nfs	Add missing comma in nfsv4_errstr	2020-01-13 21:49:27 +00:00
nfsclient	vfs: drop the mostly unused flags argument from VOP_UNLOCK	2020-01-03 22:29:58 +00:00
nfsserver	Fix a crash in the NFSv4 server.	2020-01-26 17:59:05 +00:00
nullfs	Save lower root vnode in nullfs mnt data instead of upper.	2020-01-28 11:29:06 +00:00
procfs	Define macro VM_MAP_ENTRY_FOREACH for enumerating the entries in a vm_map.	2019-10-08 07:14:21 +00:00
pseudofs	vfs: drop the mostly unused flags argument from VOP_UNLOCK	2020-01-03 22:29:58 +00:00
smbfs	vfs: drop the mostly unused flags argument from VOP_UNLOCK	2020-01-03 22:29:58 +00:00
tmpfs	Don't hold the object lock while calling getpages.	2020-01-19 23:47:32 +00:00
udf	vfs: drop the mostly unused flags argument from VOP_UNLOCK	2020-01-03 22:29:58 +00:00
unionfs	vfs: provide F_ISUNIONSTACK as a kludge for libc	2020-01-17 14:42:25 +00:00