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Merge tag 'nfsd-6.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux

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Pull nfsd fixes from Chuck Lever:

 - Protect NFSD writes against filesystem freezing

 - Fix a potential memory leak during server shutdown

* tag 'nfsd-6.3-2' of git://git.kernel.org/pub/scm/linux/kernel/git/cel/linux:
  SUNRPC: Fix a server shutdown leak
  NFSD: Protect against filesystem freezing
This commit is contained in:
Linus Torvalds
2023-03-10 08:45:30 -08:00
parent ae195ca1a8 9ca6705d9d
commit 92cadfcffa
2 changed files with 7 additions and 1 deletions
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2
fs/nfsd/vfs.c
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@@ -1104,7 +1104,9 @@ nfsd_vfs_write(struct svc_rqst *rqstp, struct svc_fh *fhp, struct nfsd_file *nf,
since = READ_ONCE(file->f_wb_err);
if (verf)
nfsd_copy_write_verifier(verf, nn);
file_start_write(file);
host_err = vfs_iter_write(file, &iter, &pos, flags);
file_end_write(file);
if (host_err < 0) {
nfsd_reset_write_verifier(nn);
trace_nfsd_writeverf_reset(nn, rqstp, host_err);

6
net/sunrpc/svc.c
View File

@@ -798,6 +798,7 @@ svc_start_kthreads(struct svc_serv *serv, struct svc_pool *pool, int nrservs)
static int
svc_stop_kthreads(struct svc_serv *serv, struct svc_pool *pool, int nrservs)
{
struct svc_rqst *rqstp;
struct task_struct *task;
unsigned int state = serv->sv_nrthreads-1;
@@ -806,7 +807,10 @@ svc_stop_kthreads(struct svc_serv *serv, struct svc_pool *pool, int nrservs)
task = choose_victim(serv, pool, &state);
if (task == NULL)
break;
kthread_stop(task);
rqstp = kthread_data(task);
/* Did we lose a race to svo_function threadfn? */
if (kthread_stop(task) == -EINTR)
svc_exit_thread(rqstp);
nrservs++;
} while (nrservs < 0);
return 0;