From mboxrd@z Thu Jan 1 00:00:00 1970 Received: by ug-out-1314.google.com with SMTP id c2so35542ugf for ; Mon, 23 Jul 2007 13:18:52 -0700 (PDT) Message-ID: <29495f1d0707231318n5e76d141t5f81431ead007b53@mail.gmail.com> Date: Mon, 23 Jul 2007 13:18:48 -0700 From: "Nish Aravamudan" Subject: Re: hugepage test failures In-Reply-To: <20070723120409.477a1c31.randy.dunlap@oracle.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20070723120409.477a1c31.randy.dunlap@oracle.com> Sender: owner-linux-mm@kvack.org Return-Path: To: Randy Dunlap Cc: linux-mm@kvack.org List-ID: On 7/23/07, Randy Dunlap wrote: > Hi, > > I'm a few hundred linux-mm emails behind, so maybe this has been > addressed already. I hope so. > > I run hugepage-mmap and hugepage-shm tests (from Doc/vm/hugetlbpage.txt) > on a regular basis. Lately they have been failing, usually with -ENOMEM, > but sometimes the mmap() succeeds and hugepage-mmap gets a SIGBUS: Would it be possible for you instead to run the libhugetlbfs tests? They are kept uptodate, at least. > open("/mnt/hugetlbfs/hugepagefile", O_RDWR|O_CREAT, 0755) = 3 > mmap(NULL, 268435456, PROT_READ|PROT_WRITE, MAP_SHARED, 3, 0) = 0x2af31d2c3000 > fstat(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 1), ...}) = 0 > mmap(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x2af32d2c3000 > write(1, "Returned address is 0x2af31d2c30"..., 35) = 35 > --- SIGBUS (Bus error) @ 0 (0) --- > +++ killed by SIGBUS +++ > > > and: > > # ./hugepage-shm > shmget: Cannot allocate memory > > > I added printk()s in many mm/mmap.c and mm/hugetlb.c error return > locations and got this: > > hugetlb_reserve_pages: -ENOMEM > > which comes from mm/hugetlb.c::hugetlb_reserve_pages(): > > if (chg > cpuset_mems_nr(free_huge_pages_node)) { > printk(KERN_DEBUG "%s: -ENOMEM\n", __func__); > return -ENOMEM; > } > > I had CONFIG_CPUSETS=y so I disabled it, but the same error > still happens. As in the same cpusets_mems_nr() check fails? > Suggestions? Fixex? Which kernel is this? Thanks, Nish -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org