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Notable bug fixes: 

- Ensure SM_NOTIFY doesn't crash the NFS server host
 - Ensure NLM locks are cleaned up after client reboot
 - Fix a leak of internal NFSv4 lease information
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Merge tag 'nfsd-5.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

Pull nfsd fixes from Chuck Lever:
 "Notable bug fixes:

   - Ensure SM_NOTIFY doesn't crash the NFS server host

   - Ensure NLM locks are cleaned up after client reboot

   - Fix a leak of internal NFSv4 lease information"

* tag 'nfsd-5.17-1' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
  nfsd: nfsd4_setclientid_confirm mistakenly expires confirmed client.
  lockd: fix failure to cleanup client locks
  lockd: fix server crash on reboot of client holding lock
This commit is contained in:
Linus Torvalds 2022-02-02 10:14:31 -08:00
parent d5084ffbc5 ab451ea952
commit 88808fbbea
2 changed files with 13 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
fs/lockd/svcsubs.c
View File

@ -179,19 +179,21 @@ nlm_delete_file(struct nlm_file *file)
static int nlm_unlock_files(struct nlm_file *file)
{
struct file_lock lock;
struct file *f;
locks_init_lock(&lock);
lock.fl_type = F_UNLCK;
lock.fl_start = 0;
lock.fl_end = OFFSET_MAX;
for (f = file->f_file[0]; f <= file->f_file[1]; f++) {
if (f && vfs_lock_file(f, F_SETLK, &lock, NULL) < 0) {
pr_warn("lockd: unlock failure in %s:%d\n",
__FILE__, __LINE__);
return 1;
}
}
if (file->f_file[O_RDONLY] &&
vfs_lock_file(file->f_file[O_RDONLY], F_SETLK, &lock, NULL))
goto out_err;
if (file->f_file[O_WRONLY] &&
vfs_lock_file(file->f_file[O_WRONLY], F_SETLK, &lock, NULL))
goto out_err;
return 0;
out_err:
pr_warn("lockd: unlock failure in %s:%d\n", __FILE__, __LINE__);
return 1;
}
/*

4
fs/nfsd/nfs4state.c
View File

@ -4130,8 +4130,10 @@ nfsd4_setclientid_confirm(struct svc_rqst *rqstp,
status = nfserr_clid_inuse;
if (client_has_state(old)
&& !same_creds(&unconf->cl_cred,
&old->cl_cred))
&old->cl_cred)) {
old = NULL;
goto out;
}
status = mark_client_expired_locked(old);
if (status) {
old = NULL;