"DeGon, Michael J" <michael.j.degon@xxxxxxxxx> writes: > All, > > On Friday, I installed and tested the pre- 3.7 raid5 trim kernel, > 3.6.10 kernel. > > I was able to create an xfs filesystem on a RAID5 SSD array without > the kernel panic. > > This leads me to believe that the raid5 trim feature added in kernel > 3.7 may have caused the issue I reported. It is will understand that the crash problem appeared with the TRIM patches for RAID5, so no surprise. Regards, Jes > > Regards, > > Michael > > > -----Original Message----- > From: linux-raid-owner@xxxxxxxxxxxxxxx > [mailto:linux-raid-owner@xxxxxxxxxxxxxxx] On Behalf Of Jes Sorensen > Sent: Monday, October 21, 2013 5:29 AM > To: Shaohua Li > Cc: stan@xxxxxxxxxxxxxxxxx; linux-raid@xxxxxxxxxxxxxxx; NeilBrown; Jeff Moyer > Subject: Re: raid5 trim OOPS / use after free? > > Shaohua Li <ShLi@xxxxxxxxxxxx> writes: >> On 10/18/13 2:03 PM, "Jes Sorensen" <Jes.Sorensen@xxxxxxxxxx> wrote: >> >>>Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx> writes: >>>> On 10/17/2013 4:58 PM, Jes Sorensen wrote: >>>>> Hi, >>>>> >>>>> I have been trying out the trim code in recent kernels and I am >>>>> consistently seeing crashes with the raid5 trim implementation. >>>>> >>>>> I am seeing 3-4 different OOPS outputs which are very different in >>>>>their output. This makes me suspect this is a memory corruption of >>>>>use after free problem? >>>>> >>>>> Basically I have a system with an AHCI controller and 4 SATA SSD >>>>> drives hooked up to it. I create a raid5 and then run mkfs.ext4 on >>>>> it and the fireworks display starts. >>>>> >>>>> I first saw this with an older kernel with some backports applied, >>>>>but I am able to reproduce this with the current top of tree out of >>>>>Linus' >>>>> tree. >>>>> >>>>> Any ideas? >>>> >>>> See a nearly identical problem posted to this list yesterday: >>>> >>>> http://www.spinics.net/lists/raid/msg44686.html >>> >>>Looks the same - I believe I have seen that variation of the problem >>>as well. >> >> Ok, looks we have some problems with request merge in SCSI. I just >> posted some patches to linux-raid maillist, please test and report back. > > Hi Shaohua, > > Thanks for the quick reply. I will test them as soon as I can, but it probably wont be until the end of the week. > > Regards, > Jes > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
