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blob_to_mnt(): kern_unmount() is needed to undo kern_mount()

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plain mntput() won't do.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2022-03-02 16:11:23 -05:00
parent f6957b7191
commit 279b192c23
1 changed files with 2 additions and 2 deletions
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4
kernel/usermode_driver.c
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@@ -28,7 +28,7 @@ static struct vfsmount *blob_to_mnt(const void *data, size_t len, const char *na
file = file_open_root_mnt(mnt, name, O_CREAT | O_WRONLY, 0700); file = file_open_root_mnt(mnt, name, O_CREAT | O_WRONLY, 0700);
if (IS_ERR(file)) { if (IS_ERR(file)) {
mntput(mnt); kern_unmount(mnt);
return ERR_CAST(file); return ERR_CAST(file);
} }
@@ -38,7 +38,7 @@ static struct vfsmount *blob_to_mnt(const void *data, size_t len, const char *na
if (err >= 0) if (err >= 0)
err = -ENOMEM; err = -ENOMEM;
filp_close(file, NULL); filp_close(file, NULL);
mntput(mnt); kern_unmount(mnt);
return ERR_PTR(err); return ERR_PTR(err);
} }