From: Christian König christian.koenig@amd.com Subject: coda: fix reference counting in coda_file_mmap error path
mmap_region() now calls fput() on the vma->vm_file.
So we need to drop the extra reference on the coda file instead of the host file.
Link: https://lkml.kernel.org/r/20210421132012.82354-1-christian.koenig@amd.com Fixes: 1527f926fd04 ("mm: mmap: fix fput in error path v2") Signed-off-by: Christian König christian.koenig@amd.com Reviewed-by: Daniel Vetter daniel.vetter@ffwll.ch Acked-by: Jan Harkes jaharkes@cs.cmu.edu Cc: Miklos Szeredi miklos@szeredi.hu Cc: Jason Gunthorpe jgg@ziepe.ca Cc: stable@vger.kernel.org [5.11+] Signed-off-by: Andrew Morton akpm@linux-foundation.org ---
fs/coda/file.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-)
--- a/fs/coda/file.c~coda-fix-reference-counting-in-coda_file_mmap-error-path +++ a/fs/coda/file.c @@ -175,10 +175,10 @@ coda_file_mmap(struct file *coda_file, s ret = call_mmap(vma->vm_file, vma);
if (ret) { - /* if call_mmap fails, our caller will put coda_file so we - * should drop the reference to the host_file that we got. + /* if call_mmap fails, our caller will put host_file so we + * should drop the reference to the coda_file that we got. */ - fput(host_file); + fput(coda_file); kfree(cvm_ops); } else { /* here we add redirects for the open/close vm_operations */ _