Messages in this thread Patch in this message | | | From | Jia-Ju Bai <> | Subject | [PATCH] fs: proc: fix error return code of proc_map_files_readdir() | Date | Tue, 9 Mar 2021 01:55:27 -0800 |
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When get_task_mm() returns NULL to mm, no error return code of proc_map_files_readdir() is assigned. To fix this bug, ret is assigned with -ENOENT in this case.
Fixes: f0c3b5093add ("[readdir] convert procfs") Reported-by: TOTE Robot <oslab@tsinghua.edu.cn> Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com> --- fs/proc/base.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/proc/base.c b/fs/proc/base.c index 3851bfcdba56..254cc6ac65fb 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -2332,8 +2332,10 @@ proc_map_files_readdir(struct file *file, struct dir_context *ctx) goto out_put_task; mm = get_task_mm(task); - if (!mm) + if (!mm) { + ret = -ENOENT; goto out_put_task; + } ret = mmap_read_lock_killable(mm); if (ret) { -- 2.17.1
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