Get the staus of task from the pointer of proc inode directly is not safe. The function get_proc_task make it happen in RCU protection.
Signed-off-by: Yahu Gao <[email protected]> --- fs/proc/base.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/proc/base.c b/fs/proc/base.c index 1bc9bcdef09f..05f33bb35067 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -1994,7 +1994,7 @@ static int pid_revalidate(struct dentry *dentry, unsigned int flags) static inline bool proc_inode_is_dead(struct inode *inode) { - return !proc_pid(inode)->tasks[PIDTYPE_PID].first; + return !get_proc_task(inode); } int pid_delete_dentry(const struct dentry *dentry) -- 2.25.1
