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| author | Dai Ngo <dai.ngo@oracle.com> | 2022-12-13 01:50:11 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-01-04 13:28:58 +0300 |
| commit | 650b69b17cfd79f51476d93c2c63bfb73280a77a (patch) | |
| tree | 97b6d69104729bf54a7cdcb6e6accd74f131be88 /Documentation | |
| parent | ba50fee6b41bcbafaeed3c51f90d37d1480ff9a0 (diff) | |
| download | linux-650b69b17cfd79f51476d93c2c63bfb73280a77a.tar.xz | |
NFSD: fix use-after-free in __nfs42_ssc_open()
[ Upstream commit 75333d48f92256a0dec91dbf07835e804fc411c0 ]
Problem caused by source's vfsmount being unmounted but remains
on the delayed unmount list. This happens when nfs42_ssc_open()
return errors.
Fixed by removing nfsd4_interssc_connect(), leave the vfsmount
for the laundromat to unmount when idle time expires.
We don't need to call nfs_do_sb_deactive when nfs42_ssc_open
return errors since the file was not opened so nfs_server->active
was not incremented. Same as in nfsd4_copy, if we fail to
launch nfsd4_do_async_copy thread then there's no need to
call nfs_do_sb_deactive
Reported-by: Xingyuan Mo <hdthky0@gmail.com>
Signed-off-by: Dai Ngo <dai.ngo@oracle.com>
Tested-by: Xingyuan Mo <hdthky0@gmail.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions