On Tue 29-12-15 18:03:02, Guido Trentalancia wrote: > Hello. > > I am getting an unrecoverable Out Of Memory error on kernel 4.3.1, > while compiling Firefox 43.0.3. The system becomes unresponsive, the > hard-disk is continuously busy and a hard-reboot must be forced. > > Here is the report from the kernel: [...] > Dec 29 12:28:25 vortex kernel: Mem-Info: > Dec 29 12:28:25 vortex kernel: active_anon:716916 inactive_anon:199483 isolated_anon:0 > Dec 29 12:28:25 vortex kernel: active_file:3108 inactive_file:3160 isolated_file:32 > Dec 29 12:28:25 vortex kernel: unevictable:4316 dirty:3173 writeback:55 unstable:0 > Dec 29 12:28:25 vortex kernel: slab_reclaimable:16548 slab_unreclaimable:9058 > Dec 29 12:28:25 vortex kernel: mapped:4037 shmem:13351 pagetables:6846 bounce:0 > Dec 29 12:28:25 vortex kernel: free:7058 free_pcp:295 free_cma:0 [...] > Dec 29 12:28:25 vortex kernel: Free swap = 0kB > Dec 29 12:28:25 vortex kernel: Total swap = 16380kB Your swap space is full and basically all the memory is eaten by the anonymous memory which cannot be reclaimed. [...] > Dec 29 12:28:25 vortex kernel: Killed process 10197 (cc1plus) total-vm:969632kB, anon-rss:809184kB, file-rss:9308kB This task is consuming a lot of memory so killing it should help to release the memory pressure. It would be interesting to see whether the task has died or not. Are there any follow up messages in the log? Maybe the target task is stuck behind some lock which is blocked because of a memory allocation. We have seen deadlocks like that in the past. The current linux-next has some measures to reduce the probability of such a deadlock so you might give it a try. Especially if this is reproducible. -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>