I have a memory leak process which cause OOM kill to other process. The OOM log below:
[3669.400 s]4,1153,3669403826,-;test_process: vmalloc: allocation failure, allocated 102400 of 135168 bytes, mode:0x6000c1(GFP_KERNEL|GFP_DMA), nodemask=(null)
[3669.400 s]6,1154,3669403836,-;test_process cpuset=/ mems_allowed=0
[3669.400 s]4,1155,3669403950,-;CPU: 0 PID: 346 Comm: test_process Tainted: G O 4.19.73 #1
[3669.400 s]4,1156,3669403956,-;Hardware name: Generic DRA74X (Flattened Device Tree)
[3669.400 s]4,1157,3669403962,-;Backtrace:
[3669.400 s]4,1158,3669403974,-;Function entered at [<c020c974>] from [<c020cc9c>]
[3669.400 s]4,1159,3669403984,-; r7:ffffe000 r6:60030013 r5:00000000 r4:c0e45958
[3669.400 s]4,1160,3669403990,-;Function entered at [<c020cc84>] from [<c0834980>]
[3669.400 s]4,1161,3669403995,-;Function entered at [<c08348f0>] from [<c02f8498>]
[3669.400 s]4,1162,3669404003,-; r7:ffffe000 r6:c0a8f28c r5:00000000 r4:c0e04c48
[3669.400 s]4,1163,3669404009,-;Function entered at [<c02f83d4>] from [<c0330e9c>]
[3669.400 s]4,1164,3669404016,-; r3:00019000 r2:c0a8f28c
[3669.400 s]4,1165,3669404023,-; r7:ffffffff r6:006000c1 r5:00000019 r4:ce342800
[3669.400 s]4,1166,3669404029,-;Function entered at [<c0330d50>] from [<c0330fec>]
[3669.400 s]4,1167,3669404037,-; r9:00000000 r8:00020000 r7:00020000 r6:02024200 r5:bf031f18 r4:cd53fc00
[3669.400 s]4,1168,3669404043,-;Function entered at [<c0330f9c>] from [<bf0052c4>]
[3669.400 s]4,1169,3669404049,-;Function entered at [<bf00523c>] from [<bf005388>]
[3669.400 s]4,1170,3669404055,-;Function entered at [<bf00533c>] from [<bf0009b4>]
[3669.400 s]4,1171,3669404063,-; r8:00020000 r7:02024200 r6:00020000 r5:c0e04c48 r4:02024200
[3669.400 s]4,1172,3669404068,-;Function entered at [<bf0008bc>] from [<bf008b84>]
[3669.400 s]4,1173,3669404074,-; r6:d7da1f80 r5:c0e04c48 r4:00000000
[3669.400 s]4,1174,3669404080,-;Function entered at [<bf0088c8>] from [<bf01316c>]
[3669.400 s]4,1175,3669404090,-; r10:bf0088c8 r9:d7679bdc r8:00000000 r7:00020000 r6:00001000 r5:c0e04c48
[3669.400 s]4,1176,3669404095,-; r4:d7eaf700
[3669.400 s]4,1177,3669404101,-;Function entered at [<bf013094>] from [<bf008f74>]
[3669.400 s]4,1178,3669404110,-; r10:0000020b r9:d7eaf700 r8:ce342100 r7:d7da1f80 r6:00000040 r5:c0e04c48
[3669.400 s]4,1179,3669404115,-; r4:00000000
[3669.400 s]4,1180,3669404120,-;Function entered at [<bf008e74>] from [<bf009790>]
[3669.400 s]4,1181,3669404129,-; r10:d7da1f80 r9:0000000b r8:00020000 r7:d7679cb0 r6:d07ed100 r5:00000000
[3669.400 s]4,1182,3669404133,-; r4:c0e04c48
[3669.400 s]4,1183,3669404139,-;Function entered at [<bf0096b8>] from [<bf00a074>]
[3669.400 s]4,1184,3669404147,-; r10:d7679d10 r9:d8a6d700 r8:d7da1f80 r7:00000000 r6:00000000 r5:0000000b
[3669.400 s]4,1185,3669404152,-; r4:c0e04c48
[3669.400 s]4,1186,3669404157,-;Function entered at [<bf009f88>] from [<bf0157cc>]
[3669.401 s]4,1187,3669404165,-; r10:d7679e2c r9:00000000 r8:d762e180 r7:f1eec000 r6:c0e04c48 r5:00000000
[3669.401 s]4,1188,3669404170,-; r4:f1eeb000
[3669.401 s]4,1189,3669404176,-;Function entered at [<bf015650>] from [<bf017b04>]
[3669.401 s]4,1190,3669404184,-; r9:0000015a r8:f1eeb000 r7:f1eec000 r6:bf015650 r5:d762e180 r4:d7679e2c
[3669.401 s]4,1191,3669404190,-;Function entered at [<bf017a70>] from [<bf0048e8>]
[3669.401 s]4,1192,3669404198,-; r8:d762e180 r7:d7eaff00 r6:c0e04c48 r5:c01c6707 r4:d7679e2c
[3669.401 s]4,1193,3669404204,-;Function entered at [<bf004808>] from [<c0590564>]
[3669.401 s]4,1194,3669404212,-; r9:bf004808 r8:00000030 r7:00000000 r6:d865b800 r5:d7eaff00 r4:c0e04c48
[3669.401 s]4,1195,3669404217,-;Function entered at [<c05904b4>] from [<c05909b4>]
[3669.401 s]4,1196,3669404225,-; r10:bf0312b0 r9:00000000 r8:bea3cc2c r7:401c6440 r6:d7eaff00 r5:d7edc240
[3669.401 s]4,1197,3669404230,-; r4:c0e04c48
[3669.401 s]4,1198,3669404235,-;Function entered at [<c059070c>] from [<c0366f4c>]
[3669.401 s]4,1199,3669404243,-; r10:d8646f60 r9:d7678000 r8:bea3cc2c r7:00000013 r6:d7edc240 r5:bea3cc2c
[3669.401 s]4,1200,3669404248,-; r4:c0e04c48
[3669.401 s]4,1201,3669404253,-;Function entered at [<c0366e94>] from [<c0367690>]
[3669.401 s]4,1202,3669404261,-; r10:00000036 r9:d7678000 r8:bea3cc2c r7:401c6440 r6:00000013 r5:d7edc240
[3669.401 s]4,1203,3669404266,-; r4:d7edc241
[3669.401 s]4,1204,3669404272,-;Function entered at [<c0367654>] from [<c03676cc>]
[3669.401 s]4,1205,3669404280,-; r9:d7678000 r8:c0201204 r7:00000036 r6:401c6440 r5:bea3cc2c r4:c01c6707
[3669.401 s]4,1206,3669404285,-;Function entered at [<c03676bc>] from [<c0201000>]
[3669.401 s]4,1207,3669404291,-;Exception stack(0xd7679fa8 to 0xd7679ff0)
[3669.401 s]4,1208,3669404299,-;9fa0: c01c6707 bea3cc2c 00000013 401c6440 bea3cc2c 0000001c
[3669.401 s]4,1209,3669404307,-;9fc0: c01c6707 bea3cc2c 401c6440 00000036 0000000b 010b8b80 00000040 00000004
[3669.401 s]4,1210,3669404314,-;9fe0: b6447094 bea3cc04 b643219b b4c2815c
[3669.401 s]6,1211,3669404603,-;PVR_K:(Error): NewVMallocLinuxMemArea: failed!
[3669.401 s]6,1212,3669404617,-;PVR_K:(Error): BM_ImportMemory: OSAllocPages(0x20000) failed
[3669.401 s]6,1213,3669404667,-;PVR_K:(Error): AllocMemory: RA_Alloc(0x20000) FAILED
[3669.401 s]6,1214,3669404679,-;PVR_K:(Error): BM_Alloc: AllocMemory FAILED
[3669.401 s]6,1215,3669404689,-;PVR_K:(Error): AllocDeviceMem: BM_Alloc Failed
[3669.401 s]6,1216,3669404702,-;PVR_K:(Error): PVRSRVAllocDeviceMemBW: PVRSRVAllocDeviceMemKM failed with eError = 1
[3669.514 s]4,1217,3669518796,-;test_process invoked oom-killer: gfp_mask=0x6000c0(GFP_KERNEL), nodemask=(null), order=0, oom_score_adj=0
[3669.514 s]6,1218,3669518809,-;test_process cpuset=/ mems_allowed=0
[3669.514 s]4,1219,3669519201,-;CPU: 0 PID: 346 Comm: test_process Tainted: G O 4.19.73 #1
[3669.514 s]4,1220,3669519208,-;Hardware name: Generic DRA74X (Flattened Device Tree)
[3669.514 s]4,1221,3669519215,-;Backtrace:
[3669.514 s]4,1222,3669519231,-;Function entered at [<c020c974>] from [<c020cc9c>]
[3669.514 s]4,1223,3669519241,-; r7:d758bb44 r6:60030013 r5:00000000 r4:c0e45958
[3669.514 s]4,1224,3669519247,-;Function entered at [<c020cc84>] from [<c0834980>]
[3669.514 s]4,1225,3669519253,-;Function entered at [<c08348f0>] from [<c02f3dac>]
[3669.514 s]4,1226,3669519262,-; r7:d758bb44 r6:d7679df4 r5:d758b600 r4:d7679df4
[3669.514 s]4,1227,3669519269,-;Function entered at [<c02f3d34>] from [<c02f3194>]
[3669.514 s]4,1228,3669519280,-; r10:00000000 r9:0000015b r8:c0a8cae0 r7:d758bb44 r6:d7679df4 r5:d758b608
[3669.514 s]4,1229,3669519285,-; r4:d758b600
[3669.514 s]4,1230,3669519290,-;Function entered at [<c02f30cc>] from [<c02f3ac0>]
[3669.514 s]4,1231,3669519300,-; r10:00000000 r9:0000112c r8:c0e04e44 r7:c0e080c0 r6:c0e04c48 r5:d7679df4
[3669.514 s]4,1232,3669519306,-; r4:d758b600
[3669.514 s]4,1233,3669519313,-;Function entered at [<c02f3954>] from [<c02f90fc>]
[3669.514 s]4,1234,3669519321,-; r7:00000002 r6:c0e04c7c r5:00404100 r4:00000000
[3669.514 s]4,1235,3669519328,-;Function entered at [<c02f85e4>] from [<c02f94c8>]
[3669.514 s]4,1236,3669519337,-; r10:02065e48 r9:00000025 r8:d7679f60 r7:d7ebb200 r6:c0e04c48 r5:d758b600
[3669.514 s]4,1237,3669519343,-; r4:bea3de64
[3669.514 s]4,1238,3669519349,-;Function entered at [<c02f94ac>] from [<c03b771c>]
[3669.514 s]4,1239,3669519356,-;Function entered at [<c03b755c>] from [<c03537d0>]
[3669.514 s]4,1240,3669519365,-; r10:00000003 r9:00000000 r8:d7679f60 r7:34dae64e r6:c03b755c r5:d7f4acc0
[3669.514 s]4,1241,3669519371,-; r4:c0e04c48
[3669.514 s]4,1242,3669519378,-;Function entered at [<c0353790>] from [<c0353984>]
[3669.514 s]4,1243,3669519387,-; r9:00000000 r8:00000001 r7:d7679f60 r6:02065e48 r5:d7f4acc0 r4:00000400
[3669.514 s]4,1244,3669519394,-;Function entered at [<c03538f4>] from [<c0353ee0>]
[3669.514 s]4,1245,3669519404,-; r9:00000000 r8:00000000 r7:02065e48 r6:d7f4acc3 r5:c0e04c48 r4:d7f4acc0
[3669.514 s]4,1246,3669519410,-;Function entered at [<c0353e74>] from [<c0353f64>]
[3669.514 s]4,1247,3669519418,-; r9:d7678000 r8:c0201204 r7:00000003 r6:0000002b r5:02065e48 r4:00000400
[3669.514 s]4,1248,3669519425,-;Function entered at [<c0353f54>] from [<c0201000>]
[3669.514 s]4,1249,3669519432,-;Exception stack(0xd7679fa8 to 0xd7679ff0)
[3669.514 s]4,1250,3669519441,-;9fa0: 00000400 02065e48 0000002b 02065e48 00000400 00000000
[3669.514 s]4,1251,3669519452,-;9fc0: 00000400 02065e48 0000002b 00000003 00000002 02065ac8 bea3d2f4 b4f0980c
[3669.515 s]4,1252,3669519461,-;9fe0: 00000000 bea3d000 b2dd94d0 b4c1f1a4
[3669.515 s]4,1253,3669519622,-;Mem-Info:
[3669.515 s]4,1254,3669519643,-;active_anon:48392 inactive_anon:3552 isolated_anon:0\x0a active_file:10973 inactive_file:3258 isolated_file:0\x0a unevictable:0 dirty:16 writeback:0 unstable:0\x0a slab_reclaimable:1389 slab_unreclaimable:3786\x0a mapped:45654 shmem:3559 pagetables:949 bounce:0\x0a free:13805 free_pcp:94 free_cma:12383
[3669.515 s]4,1255,3669519656,-;Node 0 active_anon:193568kB inactive_anon:14208kB active_file:43892kB inactive_file:13032kB unevictable:0kB isolated(anon):0kB isolated(file):0kB mapped:182616kB dirty:64kB writeback:0kB shmem:14236kB writeback_tmp:0kB unstable:0kB all_unreclaimable? yes
[3669.515 s]4,1256,3669519671,c;DMA free:17316kB min:2016kB low:2520kB high:3024kB active_anon:77820kB inactive_anon:8168kB active_file:92kB inactive_file:68kB unevictable:0kB writepending:0kB present:687104kB managed:437000kB mlocked:0kB kernel_stack:2872kB pagetables:1216kB bounce:0kB free_pcp:260kB local_pcp:252kB free_cma:15480kB
[3669.515 s]4,1257,3669519677,-;lowmem_reserve[]: 0 0 125 125
[3669.515 s]4,1258,3669519714,c;HighMem free:37904kB min:128kB low:380kB high:632kB active_anon:115748kB inactive_anon:6040kB active_file:43812kB inactive_file:12884kB unevictable:0kB writepending:156kB present:259072kB managed:259072kB mlocked:0kB kernel_stack:0kB pagetables:2580kB bounce:0kB free_pcp:116kB local_pcp:100kB free_cma:34052kB
[3669.515 s]4,1259,3669519754,-;lowmem_reserve[]: 0 0 0 0
[3669.515 s]4,1260,3669519784,c;DMA: 658*4kB (UMEC) 365*8kB (UMEC) 184*16kB (UMC) 102*32kB (MC) 61*64kB (C) 11*128kB (C) 2*256kB (C) 0*512kB 0*1024kB 0*2048kB 0*4096kB = 17584kB
[3669.515 s]4,1261,3669519923,c;HighMem: 1791*4kB (UMC) 1291*8kB (UMC) 438*16kB (UMC) 74*32kB (C) 7*64kB (C) 1*128kB (C) 1*256kB (C) 0*512kB 2*1024kB (C) 2*2048kB (C) 1*4096kB (C) = 37940kB
[3669.515 s]4,1262,3669520074,-;17794 total pagecache pages
[3669.515 s]4,1263,3669520080,-;0 pages in swap cache
[3669.515 s]4,1264,3669520088,-;Swap cache stats: add 0, delete 0, find 0/0
[3669.515 s]4,1265,3669520158,-;Free swap = 0kB
[3669.515 s]4,1266,3669520168,-;Total swap = 0kB
[3669.515 s]4,1267,3669520178,-;236544 pages RAM
[3669.515 s]4,1268,3669520185,-;64768 pages HighMem/MovableOnly
[3669.515 s]4,1269,3669520191,-;62526 pages reserved
[3669.515 s]4,1270,3669520199,-;77824 pages cma reserved
[3669.515 s]6,1271,3669520208,-;Tasks state (memory values in pages):
[3669.515 s]6,1272,3669520218,-;[ pid ] uid tgid total_vm rss pgtables_bytes swapents oom_score_adj name
[3669.515 s]6,1273,3669520281,-;[ 101] 0 101 2930 329 32768 0 -1000 systemd-udevd
[3669.515 s]6,1274,3669520295,-;[ 111] 0 111 13068 4913 118784 0 0 weston
[3669.515 s]6,1275,3669520305,-;[ 133] 0 133 2496 787 40960 0 0 weston-keyboard
[3669.515 s]6,1276,3669520314,-;[ 134] 0 134 3556 1877 53248 0 0 weston-desktop-
[3669.515 s]6,1277,3669520325,-;[ 135] 0 135 1719 957 36864 0 0 superman
[3669.515 s]6,1278,3669520336,-;[ 137] 0 137 7647 1067 53248 0 0 hal
[3669.515 s]6,1279,3669520344,-;[ 140] 0 140 1380 699 28672 0 0 keyman
[3669.515 s]6,1280,3669520353,-;[ 141] 0 141 5670 1102 73728 0 0 mediaservice
[3669.515 s]6,1281,3669520375,-;[ 142] 0 142 6358 1081 73728 0 0 inforbroker
[3669.515 s]6,1282,3669520410,-;[ 143] 0 143 4216 931 36864 0 0 diagman
[3669.515 s]6,1283,3669520421,-;[ 144] 0 144 1706 953 32768 0 0 appman
[3669.515 s]6,1284,3669520431,-;[ 149] 0 149 178696 2000 675840 0 0 apps.out
[3669.515 s]6,1285,3669520440,-;[ 150] 0 150 42577 12144 229376 0 0 mediaplayer
[3669.515 s]6,1286,3669520449,-;[ 151] 0 151 2523 1422 40960 0 0 mediaplayer
[3669.515 s]6,1287,3669520458,-;[ 152] 0 152 2523 1434 36864 0 0 mediaplayer
[3669.515 s]6,1288,3669520467,-;[ 155] 0 155 2523 1422 40960 0 0 mediaplayer
[3669.515 s]6,1289,3669520476,-;[ 156] 0 156 2523 1424 36864 0 0 mediaplayer
[3669.515 s]6,1290,3669520485,-;[ 158] 0 158 61243 8169 393216 0 0 mediaplayer
[3669.515 s]6,1291,3669520493,-;[ 159] 0 159 11884 1874 77824 0 0 mediaplayer
[3669.515 s]6,1292,3669520543,-;[ 162] 0 162 33177 5213 143360 0 0 mediaplayer
[3669.515 s]6,1293,3669520552,-;[ 163] 0 163 2523 1416 40960 0 0 mediaplayer
[3669.515 s]6,1294,3669520563,-;[ 165] 0 165 2523 1416 40960 0 0 mediaplayer
[3669.515 s]6,1295,3669520571,-;[ 211] 0 211 27478 723 237568 0 0 thrive_storm
[3669.516 s]6,1296,3669520584,-;[ 339] 0 339 15930 1335 77824 0 0 avm_controller
[3669.524 s]6,1297,3669520593,-;[ 346] 0 346 178977 60276 970752 0 0 test_process
[3669.524 s]6,1298,3669520604,-;[ 486] 0 486 587 183 28672 0 0 dropbear
[3669.524 s]6,1299,3669520612,-;[ 487] 0 487 1172 306 32768 0 0 login
[3669.524 s]6,1300,3669520625,-;[ 488] 0 488 57375 1248 176128 0 0 cvf_new_app
[3669.524 s]6,1301,3669520670,-;[ 516] 0 516 7820 932 61440 0 0 cvf_controller
[3669.524 s]6,1302,3669520682,-;[ 523] 0 523 1410 719 32768 0 0 installman
[3669.524 s]6,1303,3669520689,-;[ 524] 0 524 28712 1844 118784 0 0 dvr
[3669.524 s]6,1304,3669520700,-;[ 567] 0 567 708 363 28672 0 0 sh
[3669.524 s]6,1305,3669520710,-;[ 11642] 0 11642 590 297 24576 0 0 tail
[3669.524 s]3,1306,3669520720,-;Out of memory: Kill process 346 (test_process) score 347 or sacrifice child
[3669.524 s]3,1307,3669520882,-;Killed process 346 (test_process) total-vm:715908kB, anon-rss:82476kB, file-rss:153224kB, shmem-rss:5404kB
[3669.580 s]6,1308,3669577721,-;oom_reaper: reaped process 346 (test_process), now anon-rss:0kB, file-rss:138388kB, shmem-rss:5404kB
[3669.619 s]connection closed
From log, it shows vmalloc with (GFP_KERNEL|GFP_DMA) mode get 135168 bytes size memory failed then triggered OOM kill.
But from "Mem-Info", it shows DMA free have 17316kB which is should have enough size for this vmalloc.
So if it possible that DMA zone have no continuous memory now? Or what others would possible trigger this kill?
Thanks a lot!
BR/Tim
