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| author | Jann Horn <jannh@google.com> | 2019-07-13 00:41:52 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2019-07-17 00:42:27 +0200 |
| commit | 50e04acf2990d0d93983720b0a85b11ef805df60 (patch) | |
| tree | 2624aa4c5228293f73164eed6cdc3101a1a46f96 | |
| parent | 29e7e9664aec17b94a9c8c5a75f8d216a206aa3a (diff) | |
| download | linux-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.c | 12 |
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 { |