Unlock vmcore_mutex when returning -EBUSY.
Cc: David Hildenbrand <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Michael S. Tsirkin <[email protected]>
Fixes: 0f3b1c40c652 ("fs/proc/vmcore: disallow vmcore modifications while the
vmcore is open")
Signed-off-by: Bart Van Assche <[email protected]>
---
fs/proc/vmcore.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index a00120a3c099..10d01eb09c43 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -1524,7 +1524,7 @@ int vmcore_add_device_dump(struct vmcoredd_data *data)
pr_warn_once("Unexpected adding of device dump\n");
if (vmcore_open) {
ret = -EBUSY;
- goto out_err;
+ goto unlock;
}
list_add_tail(&dump->list, &vmcoredd_list);
@@ -1532,6 +1532,9 @@ int vmcore_add_device_dump(struct vmcoredd_data *data)
mutex_unlock(&vmcore_mutex);
return 0;
+unlock:
+ mutex_unlock(&vmcore_mutex);
+
out_err:
vfree(buf);
vfree(dump);
