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authorWei Yongjun <weiyongjun1@huawei.com>2020-04-17 04:58:37 +0200
committerPaul E. McKenney <paulmck@kernel.org>2020-04-27 20:10:10 +0200
commit52785b6ae8eded7ac99d65c92d989b702e5b4376 (patch)
treea9934deb29022a7cdb18f3aca9eff7adcb00b80a /kernel/kcsan
parentImprove KCSAN documentation a bit (diff)
downloadlinux-52785b6ae8eded7ac99d65c92d989b702e5b4376.tar.xz
linux-52785b6ae8eded7ac99d65c92d989b702e5b4376.zip
kcsan: Use GFP_ATOMIC under spin lock
A spin lock is held in insert_report_filterlist(), so the krealloc() should use GFP_ATOMIC. This commit therefore makes this change. Reviewed-by: Marco Elver <elver@google.com> Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Diffstat (limited to 'kernel/kcsan')
-rw-r--r--kernel/kcsan/debugfs.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/kcsan/debugfs.c b/kernel/kcsan/debugfs.c
index 1a08664a7fab..023e49c58d55 100644
--- a/kernel/kcsan/debugfs.c
+++ b/kernel/kcsan/debugfs.c
@@ -230,7 +230,7 @@ static ssize_t insert_report_filterlist(const char *func)
/* initial allocation */
report_filterlist.addrs =
kmalloc_array(report_filterlist.size,
- sizeof(unsigned long), GFP_KERNEL);
+ sizeof(unsigned long), GFP_ATOMIC);
if (report_filterlist.addrs == NULL) {
ret = -ENOMEM;
goto out;
@@ -240,7 +240,7 @@ static ssize_t insert_report_filterlist(const char *func)
size_t new_size = report_filterlist.size * 2;
unsigned long *new_addrs =
krealloc(report_filterlist.addrs,
- new_size * sizeof(unsigned long), GFP_KERNEL);
+ new_size * sizeof(unsigned long), GFP_ATOMIC);
if (new_addrs == NULL) {
/* leave filterlist itself untouched */