* + kasan-fix-sleeping-function-called-from-invalid-context-on-rt-kernel-fix.patch added to -mm tree
@ 2022-04-15 18:35 Andrew Morton
0 siblings, 0 replies; only message in thread
From: Andrew Morton @ 2022-04-15 18:35 UTC (permalink / raw)
To: mm-commits, ryabinin.a.a, qiang1.zhang, glider, dvyukov, bigeasy,
andreyknvl, akpm, akpm
The patch titled
Subject: kasan-fix-sleeping-function-called-from-invalid-context-on-rt-kernel-fix
has been added to the -mm tree. Its filename is
kasan-fix-sleeping-function-called-from-invalid-context-on-rt-kernel-fix.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/kasan-fix-sleeping-function-called-from-invalid-context-on-rt-kernel-fix.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/kasan-fix-sleeping-function-called-from-invalid-context-on-rt-kernel-fix.patch
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*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Andrew Morton <akpm@linux-foundation.org>
Subject: kasan-fix-sleeping-function-called-from-invalid-context-on-rt-kernel-fix
reduce ifdeffery
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Konovalov <andreyknvl@gmail.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Zqiang <qiang1.zhang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
--- a/mm/kasan/quarantine.c~kasan-fix-sleeping-function-called-from-invalid-context-on-rt-kernel-fix
+++ a/mm/kasan/quarantine.c
@@ -319,28 +319,37 @@ static void qlist_move_cache(struct qlis
}
}
-static void per_cpu_remove_cache(void *arg)
+#ifndef CONFIG_PREEMPT_RT
+static void __per_cpu_remove_cache(struct qlist_head *q, void *arg)
{
struct kmem_cache *cache = arg;
- struct qlist_head *q;
-#ifndef CONFIG_PREEMPT_RT
struct qlist_head to_free = QLIST_INIT;
-#else
- unsigned long flags;
- struct cpu_shrink_qlist *sq;
-#endif
- q = this_cpu_ptr(&cpu_quarantine);
-#ifndef CONFIG_PREEMPT_RT
- if (READ_ONCE(q->offline))
- return;
+
qlist_move_cache(q, &to_free, cache);
qlist_free_all(&to_free, cache);
+}
#else
+static void __per_cpu_remove_cache(struct qlist_head *q, void *arg)
+{
+ struct kmem_cache *cache = arg;
+ unsigned long flags;
+ struct cpu_shrink_qlist *sq;
+
sq = this_cpu_ptr(&shrink_qlist);
raw_spin_lock_irqsave(&sq->lock, flags);
qlist_move_cache(q, &sq->qlist, cache);
raw_spin_unlock_irqrestore(&sq->lock, flags);
+}
#endif
+
+static void per_cpu_remove_cache(void *arg)
+{
+ struct qlist_head *q;
+
+ q = this_cpu_ptr(&cpu_quarantine);
+ if (READ_ONCE(q->offline))
+ return;
+ __per_cpu_remove_cache(q, arg);
}
/* Free all quarantined objects belonging to cache. */
@@ -348,10 +357,6 @@ void kasan_quarantine_remove_cache(struc
{
unsigned long flags, i;
struct qlist_head to_free = QLIST_INIT;
-#ifdef CONFIG_PREEMPT_RT
- int cpu;
- struct cpu_shrink_qlist *sq;
-#endif
/*
* Must be careful to not miss any objects that are being moved from
@@ -363,13 +368,18 @@ void kasan_quarantine_remove_cache(struc
on_each_cpu(per_cpu_remove_cache, cache, 1);
#ifdef CONFIG_PREEMPT_RT
- for_each_online_cpu(cpu) {
- sq = per_cpu_ptr(&shrink_qlist, cpu);
- raw_spin_lock_irqsave(&sq->lock, flags);
- qlist_move_cache(&sq->qlist, &to_free, cache);
- raw_spin_unlock_irqrestore(&sq->lock, flags);
+ {
+ int cpu;
+ struct cpu_shrink_qlist *sq;
+
+ for_each_online_cpu(cpu) {
+ sq = per_cpu_ptr(&shrink_qlist, cpu);
+ raw_spin_lock_irqsave(&sq->lock, flags);
+ qlist_move_cache(&sq->qlist, &to_free, cache);
+ raw_spin_unlock_irqrestore(&sq->lock, flags);
+ }
+ qlist_free_all(&to_free, cache);
}
- qlist_free_all(&to_free, cache);
#endif
raw_spin_lock_irqsave(&quarantine_lock, flags);
_
Patches currently in -mm which might be from akpm@linux-foundation.org are
revert-fs-binfmt_elf-fix-pt_load-p_align-values-for-loaders.patch
revert-fs-binfmt_elf-use-pt_load-p_align-values-for-static-pie.patch
mm.patch
kasan-fix-sleeping-function-called-from-invalid-context-on-rt-kernel-fix.patch
mm-create-new-mm-swaph-header-file-fix.patch
mm-shmem-make-shmem_init-return-void-fix.patch
mm-khugepaged-introduce-khugepaged_enter_vma-helper-vs-maple-tree.patch
mm-check-against-orig_pte-for-finish_fault-fix-checkpatch-fixes.patch
mglru-vs-maple-tree.patch
mm-vmscan-fix-comment-for-current_may_throttle-fix.patch
ksm-count-ksm-merging-pages-for-each-process-fix.patch
mm-memory_hotplug-refactor-hotadd_init_pgdat-and-try_online_node-checkpatch-fixes.patch
proc-fix-dentry-inode-overinstantiating-under-proc-pid-net-checkpatch-fixes.patch
fs-proc-kcorec-remove-check-of-list-iterator-against-head-past-the-loop-body-fix.patch
add-fat-messages-to-printk-index-checkpatch-fixes.patch
linux-next-rejects.patch
mm-oom_killc-fix-vm_oom_kill_table-ifdeffery.patch
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2022-04-15 18:35 + kasan-fix-sleeping-function-called-from-invalid-context-on-rt-kernel-fix.patch added to -mm tree Andrew Morton
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