commit cf8af501dc3016c1ef0819970beedb3a5bf8360e
author liuhailong <liuhailong@oppo.com> Sat Dec 04 16:29:52 2021 +0800
committer liuhailong <liuhailong@oppo.com> Sat Dec 04 17:59:24 2021 +0800
tree 5d761cf4cfa47b1a7e6023492d9400e09bcd8735
parent 6e6d14b387c021999d3432614e45d29e27dad5e8

lmkd: Fix lowmem_minfree out of bounds

lmkd daemon launches before system_server. If lowmem_targets_size
does not initialize by system_server, the value will be zero.
Before system_server starts lmkd receives a psi event
and debug_process_killing on, the lmkd crashes here.

Bug: 209090314
Signed-off-by: liuhailong <liuhailong@oppo.com>
Change-Id: I0736a882ed1ff5eee2b07676ae590a2cb2a7721c

lmkd.cpp

diff --git a/lmkd.cpp b/lmkd.cpp
index 6911a81..fe1d32c 100644
--- a/lmkd.cpp
+++ b/lmkd.cpp
@@ -2840,7 +2840,7 @@
         }
 
         if (min_score_adj == OOM_SCORE_ADJ_MAX + 1) {
-            if (debug_process_killing) {
+            if (debug_process_killing && lowmem_targets_size) {
                 ALOGI("Ignore %s memory pressure event "
                       "(free memory=%ldkB, cache=%ldkB, limit=%ldkB)",
                       level_name[level], other_free * page_k, other_file * page_k,