> Add more debugging information I guess. Let's see if something like the > following helps This is the trace from your patch. I tested without any additional patches this time. kworker/3:4-6865 [003] .... 326.253052: mem_cgroup_css_offline: memcg:ffffc9001e5ff000 is going offline now kworker/3:4-6865 [003] .... 326.267446: mem_cgroup_css_offline: memcg:ffffc9001e5ff000 is offline now kworker/10:1-414 [010] .... 326.562382: mem_cgroup_css_offline: memcg:ffffc9001e603000 is going offline now kworker/10:1-414 [010] .... 326.568337: mem_cgroup_css_offline: memcg:ffffc9001e603000 is offline now kworker/9:10-7239 [009] .... 326.568365: mem_cgroup_css_offline: memcg:ffffc9001e60b000 is going offline now kworker/9:10-7239 [009] .... 326.574326: mem_cgroup_css_offline: memcg:ffffc9001e60b000 is offline now kworker/3:4-6865 [003] .... 326.635898: mem_cgroup_css_offline: memcg:ffffc9001e58f000 is going offline now kworker/3:4-6865 [003] .... 326.643935: mem_cgroup_css_offline: memcg:ffffc9001e58f000 is offline now kworker/3:5-6867 [003] .... 326.643946: mem_cgroup_css_offline: memcg:ffffc9001e58b000 is going offline now kworker/3:5-6867 [003] .... 326.659264: mem_cgroup_css_offline: memcg:ffffc9001e58b000 is offline now kworker/10:0-161 [010] .... 326.723844: mem_cgroup_css_offline: memcg:ffffc9001e597000 is going offline now kworker/10:0-161 [010] .... 326.728909: mem_cgroup_css_offline: memcg:ffffc9001e597000 is offline now kworker/10:1-414 [010] .... 326.728922: mem_cgroup_css_offline: memcg:ffffc9001e593000 is going offline now kworker/10:1-414 [010] .... 326.738232: mem_cgroup_css_offline: memcg:ffffc9001e593000 is offline now kworker/10:3-7203 [010] .... 326.738244: mem_cgroup_css_offline: memcg:ffffc9001e59f000 is going offline now kworker/10:3-7203 [010] .... 326.743857: mem_cgroup_css_offline: memcg:ffffc9001e59f000 is offline now kworker/10:2-3071 [010] .... 326.743893: mem_cgroup_css_offline: memcg:ffffc9001e59b000 is going offline now kworker/10:2-3071 [010] .... 326.753218: mem_cgroup_css_offline: memcg:ffffc9001e59b000 is offline now kworker/9:11-7240 [009] .... 326.753246: mem_cgroup_css_offline: memcg:ffffc9001e5a7000 is going offline now kworker/9:11-7240 [009] .... 326.755855: mem_cgroup_css_offline: memcg:ffffc9001e5a7000 is offline now kworker/9:12-7241 [009] .... 326.755866: mem_cgroup_css_offline: memcg:ffffc9001e5a3000 is going offline now kworker/9:12-7241 [009] .... 326.762211: mem_cgroup_css_offline: memcg:ffffc9001e5a3000 is offline now kworker/0:4-7314 [000] .... 328.775898: mem_cgroup_css_offline: memcg:ffffc9001e613000 is going offline now kworker/0:4-7314 [000] .... 328.784328: mem_cgroup_css_offline: memcg:ffffc9001e613000 is offline now kworker/0:1-200 [000] .... 328.920820: mem_cgroup_css_offline: memcg:ffffc9001e5b7000 is going offline now kworker/0:1-200 [000] .... 328.928921: mem_cgroup_css_offline: memcg:ffffc9001e5b7000 is offline now kworker/0:4-7314 [000] .... 328.928929: mem_cgroup_css_offline: memcg:ffffc9001e5b3000 is going offline now kworker/0:4-7314 [000] .... 328.941245: mem_cgroup_css_offline: memcg:ffffc9001e5b3000 is offline now kworker/3:5-6867 [003] .... 339.851929: mem_cgroup_css_offline: memcg:ffffc9001e67d000 is going offline now kworker/3:5-6867 [003] .... 339.863333: mem_cgroup_css_offline: memcg:ffffc9001e67d000 is offline now kworker/4:1-201 [004] .... 340.228760: mem_cgroup_css_offline: memcg:ffffc9001e675000 is going offline now kworker/4:1-201 [004] .... 340.238803: mem_cgroup_css_offline: memcg:ffffc9001e675000 is offline now kworker/4:6-7253 [004] .... 340.238812: mem_cgroup_css_offline: memcg:ffffc9001e671000 is going offline now kworker/4:6-7253 [004] .... 340.251156: mem_cgroup_css_offline: memcg:ffffc9001e671000 is offline now kworker/8:5-7224 [008] .... 340.262765: mem_cgroup_css_offline: memcg:ffffc9001e689000 is going offline now kworker/8:5-7224 [008] .... 340.272181: mem_cgroup_css_offline: memcg:ffffc9001e689000 is offline now kworker/8:7-7232 [008] .... 340.505639: mem_cgroup_css_offline: memcg:ffffc9001e66d000 is going offline now kworker/8:7-7232 [008] .... 340.521665: mem_cgroup_css_offline: memcg:ffffc9001e66d000 is offline now kworker/8:5-7224 [008] .... 340.521673: mem_cgroup_css_offline: memcg:ffffc9001e669000 is going offline now kworker/8:5-7224 [008] .... 340.536024: mem_cgroup_css_offline: memcg:ffffc9001e669000 is offline now kworker/9:12-7241 [009] .... 354.575345: mem_cgroup_css_offline: memcg:ffffc9001e623000 is going offline now kworker/9:12-7241 [009] .... 354.582758: mem_cgroup_css_offline: memcg:ffffc9001e623000 is offline now kworker/9:10-7239 [009] .... 354.582808: mem_cgroup_css_offline: memcg:ffffc9001e5d7000 is going offline now kworker/9:10-7239 [009] .... 354.594402: mem_cgroup_css_offline: memcg:ffffc9001e5d7000 is offline now kworker/9:13-7242 [009] .... 354.594411: mem_cgroup_css_offline: memcg:ffffc9001e5d3000 is going offline now kworker/9:13-7242 [009] .... 354.609388: mem_cgroup_css_offline: memcg:ffffc9001e5d3000 is offline now kworker/8:7-7232 [008] .... 354.610288: mem_cgroup_css_offline: memcg:ffffc9001e5f7000 is going offline now kworker/8:7-7232 [008] .... 354.633525: mem_cgroup_css_offline: memcg:ffffc9001e5f7000 is offline now ##### CPU 11 buffer started #### kworker/11:11-7257 [011] .... 395.484996: mem_cgroup_reparent_charges: memcg:ffffc9001e5c3000 u:393216 k:0 tasks:0 kworker/11:11-7257 [011] .... 395.487995: mem_cgroup_reparent_charges: memcg:ffffc9001e5c3000 u:393216 k:0 tasks:0 kworker/11:11-7257 [011] .... 395.490991: mem_cgroup_reparent_charges: memcg:ffffc9001e5c3000 u:393216 k:0 tasks:0 kworker/11:11-7257 [011] .... 395.493988: mem_cgroup_reparent_charges: memcg:ffffc9001e5c3000 u:393216 k:0 tasks:0 kworker/11:11-7257 [011] .... 395.496991: mem_cgroup_reparent_charges: memcg:ffffc9001e5c3000 u:393216 k:0 tasks:0 < ... > -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html