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kcsan: Use GFP_ATOMIC under spin lock

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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>
This commit is contained in:
Wei Yongjun 2020-04-17 02:58:37 +00:00 committed by Paul E. McKenney
parent eba9c444d3
commit 52785b6ae8
1 changed files with 2 additions and 2 deletions
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4
kernel/kcsan/debugfs.c
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@ -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 */