Dick Streefland <d...@streefland.net> writes: > On Friday 2017-06-16 12:03, Eric W. Biederman wrote: > | Interesting... > | > | Can you test this on a stock 4.11 kernel? > | > | I definitely need a little bit more information to solve this. That > | commit did not add any new error condidtions so I need to understand > | what state you are getting yourself into that is affected by this > | commit. > | > | Is there a chance you can post /proc/self/mountinfo from when this is > | happening? > > I've installed the mainline 4.11 kernel from: > > http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.11/ > > and this kernel works correctly! > > So either this issue was fixed in the meantime, or it is something > specific to the Ubuntu kernel. I guess I should file a bug report > with Ubuntu then?
Please. > I've also looked at /proc/self/mountinfo before and directly after the > mount attempt. Here are the ext4 and autofs entries for the failing 4.4 > kernel: Thank you. I am definitely out of my depth on the autofs portion of this. As things are working with 4.11 and failing with my test of 4.4 with a much older kernel. I will leave this with you and the ubuntu folks to sort out. Good Luck, Eric > before: > 23 0 8:2 / / rw,relatime shared:1 - ext4 /dev/sda2 > rw,errors=remount-ro,data=ordered > 41 19 0:34 / /proc/sys/fs/binfmt_misc rw,relatime shared:24 - autofs > systemd-1 rw,fd=34,pgrp=1,timeout=0,minproto=5,maxproto=5,direct > 46 23 8:4 / /loc rw,nosuid,nodev,noatime shared:30 - ext4 /dev/sda4 > rw,block_validity,delalloc,barrier,user_xattr,acl > 202 23 0:44 / /net rw,relatime shared:160 - autofs /etc/auto.net > rw,fd=6,pgrp=1724,timeout=120,minproto=5,maxproto=5,indirect > > after: > 23 0 8:2 / / rw,relatime shared:1 - ext4 /dev/sda2 > rw,errors=remount-ro,data=ordered > 41 19 0:34 / /proc/sys/fs/binfmt_misc rw,relatime shared:24 - autofs > systemd-1 rw,fd=34,pgrp=1,timeout=0,minproto=5,maxproto=5,direct > 46 162 8:4 / /loc rw,nosuid,nodev,noatime shared:30 - ext4 /dev/sda4 > rw,block_validity,delalloc,barrier,user_xattr,acl > 202 23 0:44 / /net rw,relatime shared:160 - autofs /etc/auto.net > rw,fd=6,pgrp=1724,timeout=120,minproto=5,maxproto=5,indirect > 157 202 8:2 / /net/localhost rw,relatime shared:1 - ext4 /dev/sda2 > rw,errors=remount-ro,data=ordered > 161 157 0:47 / /net/localhost/loc rw,relatime shared:119 - autofs > /etc/auto.net rw,fd=6,pgrp=1724,timeout=120,minproto=5,maxproto=5,offset > 162 23 0:47 / /loc rw,relatime shared:119 - autofs /etc/auto.net > rw,fd=6,pgrp=1724,timeout=120,minproto=5,maxproto=5,offset > > And here the info for the working mainline 4.11 kernel: > > before: > 23 0 8:2 / / rw,relatime shared:1 - ext4 /dev/sda2 > rw,errors=remount-ro,data=ordered > 74 19 0:36 / /proc/sys/fs/binfmt_misc rw,relatime shared:56 - autofs > systemd-1 > rw,fd=35,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=12754 > 45 23 8:4 / /loc rw,nosuid,nodev,noatime shared:28 - ext4 /dev/sda4 > rw,block_validity,delalloc,barrier,user_xattr,acl > 208 23 0:46 / /net rw,relatime shared:164 - autofs /etc/auto.net > rw,fd=6,pgrp=1545,timeout=120,minproto=5,maxproto=5,indirect,pipe_ino=26555 > > after: > 23 0 8:2 / / rw,relatime shared:1 - ext4 /dev/sda2 > rw,errors=remount-ro,data=ordered > 74 19 0:36 / /proc/sys/fs/binfmt_misc rw,relatime shared:56 - autofs > systemd-1 > rw,fd=35,pgrp=1,timeout=0,minproto=5,maxproto=5,direct,pipe_ino=12754 > 45 175 8:4 / /loc rw,nosuid,nodev,noatime shared:28 - ext4 /dev/sda4 > rw,block_validity,delalloc,barrier,user_xattr,acl > 208 23 0:46 / /net rw,relatime shared:164 - autofs /etc/auto.net > rw,fd=6,pgrp=1545,timeout=120,minproto=5,maxproto=5,indirect,pipe_ino=26555 > 162 208 8:2 / /net/localhost rw,relatime shared:1 - ext4 /dev/sda2 > rw,errors=remount-ro,data=ordered > 166 162 0:48 / /net/localhost/loc rw,relatime shared:122 - autofs > /etc/auto.net > rw,fd=6,pgrp=1545,timeout=120,minproto=5,maxproto=5,offset,pipe_ino=26555 > 167 23 0:48 / /loc rw,relatime shared:122 - autofs /etc/auto.net > rw,fd=6,pgrp=1545,timeout=120,minproto=5,maxproto=5,offset,pipe_ino=26555 > 174 166 8:4 / /net/localhost/loc rw,nosuid,nodev,noatime shared:28 - ext4 > /dev/sda4 rw,block_validity,delalloc,barrier,user_xattr,acl > 175 167 8:4 / /loc rw,nosuid,nodev,noatime shared:28 - ext4 /dev/sda4 > rw,block_validity,delalloc,barrier,user_xattr,acl
