summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorJann Horn <jannh@google.com>2019-07-13 00:41:52 +0200
committerThomas Gleixner <tglx@linutronix.de>2019-07-17 00:42:27 +0200
commit50e04acf2990d0d93983720b0a85b11ef805df60 (patch)
tree2624aa4c5228293f73164eed6cdc3101a1a46f96
parent29e7e9664aec17b94a9c8c5a75f8d216a206aa3a (diff)
downloadlinux-stable-50e04acf2990d0d93983720b0a85b11ef805df60.tar.gz
linux-stable-50e04acf2990d0d93983720b0a85b11ef805df60.tar.bz2
linux-stable-50e04acf2990d0d93983720b0a85b11ef805df60.zip
x86/process: Delete useless check for dead process with LDT
At release_thread(), ->mm is NULL; and it is fine for the former mm to still have an LDT. Delete this check in process_64.c, similar to commit 2684927c6b93 ("[PATCH] x86: Deprecate useless bug"), which did the same in process_32.c. Signed-off-by: Jann Horn <jannh@google.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lkml.kernel.org/r/20190712224152.13129-1-jannh@google.com
-rw-r--r--arch/x86/kernel/process_64.c12
1 files changed, 1 insertions, 11 deletions
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index 250e4c4ac6d9..af64519b2695 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -143,17 +143,7 @@ void __show_regs(struct pt_regs *regs, enum show_regs_mode mode)
void release_thread(struct task_struct *dead_task)
{
- if (dead_task->mm) {
-#ifdef CONFIG_MODIFY_LDT_SYSCALL
- if (dead_task->mm->context.ldt) {
- pr_warn("WARNING: dead process %s still has LDT? <%p/%d>\n",
- dead_task->comm,
- dead_task->mm->context.ldt->entries,
- dead_task->mm->context.ldt->nr_entries);
- BUG();
- }
-#endif
- }
+ WARN_ON(dead_task->mm);
}
enum which_selector {