On Tue, 2019-02-26 at 10:33 -0800, Tony Lindgren wrote: > Hi, > > * Trond Myklebust <trondmy@xxxxxxxxxxxxxxx> [700101 00:00]: > > On Mon, 2019-02-25 at 22:27 +0000, Jon Hunter wrote: > > > On 25/02/2019 21:03, Trond Myklebust wrote: > > > This is nfsroot. I don't specify any particular NFS version from > > > the kernel cmdline, but this is seen with ARM kernel configs > > > tegra_defconfig and multi_v7_defconfig. > > > > > > Looking at the logs I am seeing the following crash which appears > > > to point to UDP ... > > > > > > [ 8.032956] Unable to handle kernel NULL pointer dereference > > > at > > > virtual address 00000024 > > > [ 8.041137] pgd = (ptrval) > > > [ 8.043858] [00000024] *pgd=00000000 > > > [ 8.047437] Internal error: Oops: 5 [#1] SMP ARM > > > [ 8.052049] Modules linked in: > > > [ 8.055104] CPU: 1 PID: 100 Comm: kworker/u9:2 Not tainted > > > 5.0.0- > > > rc7-next-20190222-g94a4752 #1 > > > [ 8.063699] Hardware name: NVIDIA Tegra SoC (Flattened Device > > > Tree) > > > [ 8.069960] Workqueue: xprtiod xs_udp_data_receive_workfn > > > [ 8.075353] PC is at udp_poll+0x30/0x64 > > > [ 8.079178] LR is at udp_poll+0x10/0x64 > > > > Thanks! I see what the issue is now and I'll be fixing it ASAP. > > I'm seeing this also with NFSroot. I can test the fix when available, > that is if you can please Cc me on the fix. > > Thanks, > > Tony I've applied the following patch to my 'testing' branch: http://git.linux-nfs.org/?p=trondmy/linux-nfs.git;a=patch;h=a73881c96d73ee72b7dbbd38a6eeef66182a8ef7 It has so far stood up to testing on my side, so I'm expecting to push it to linux-next this evening. Cheers Trond -- Trond Myklebust Linux NFS client maintainer, Hammerspace trond.myklebust@xxxxxxxxxxxxxxx
