Merge: fs/proc/kcore.c: Clear ret value in read_kcore_iter after successful iov_iter_zero

CKI KWF Bot · CKI KWF Bot · commit 815c4b37dabc · 2025-07-24T20:09:56.000-04:00
MR: https://gitlab.com/redhat/centos-stream/src/kernel/centos-stream-10/-/merge_requests/1207 JIRA: https://issues.redhat.com/browse/RHEL-83630 This fix a bug when makedumpfile read /proc/kcore. Signed-off-by: Lichen Liu <lichliu@redhat.com> Approved-by: Brian Foster <bfoster@redhat.com> Approved-by: Baoquan He <5820488-baoquan_he@users.noreply.gitlab.com> Approved-by: CKI KWF Bot <cki-ci-bot+kwf-gitlab-com@redhat.com> Merged-by: CKI GitLab Kmaint Pipeline Bot <26919896-cki-kmaint-pipeline-bot@users.noreply.gitlab.com>
diff --git a/fs/proc/kcore.c b/fs/proc/kcore.c
@@ -600,6 +600,7 @@ static ssize_t read_kcore_iter(struct kiocb *iocb, struct iov_iter *iter)
 					ret = -EFAULT;
 					goto out;
 				}
+				ret = 0;
 			/*
 			 * We know the bounce buffer is safe to copy from, so
 			 * use _copy_to_iter() directly.

Original file line number	Diff line number	Diff line change
`@@ -600,6 +600,7 @@ static ssize_t read_kcore_iter(struct kiocb iocb, struct iov_iter iter)`
`600`	`600`	`ret = -EFAULT;`
`601`	`601`	`goto out;`
`602`	`602`	`}`
	`603`	`+ ret = 0;`
`603`	`604`	`/*`
`604`	`605`	`* We know the bounce buffer is safe to copy from, so`
`605`	`606`	`* use _copy_to_iter() directly.`