Launchpad has imported 5 comments from the remote bug at https://bugzilla.kernel.org/show_bug.cgi?id=218049.
If you reply to an imported comment from within Launchpad, your comment will be sent to the remote bug automatically. Read more about Launchpad's inter-bugtracker facilities at https://help.launchpad.net/InterBugTracking. ------------------------------------------------------------------------ On 2023-10-27T13:53:48+00:00 colin.i.king wrote: Created attachment 305300 C reproducer of the problem. Run it on a tmpfs file system mounted on /mnt/tmpfs creating a file on tmpfs with open(filename, O_RDWR | O_DIRECT | O_CREAT, 0666) reports an open failure error EINVAL, but still creates the file. The file should not be created if we hit such an error. Tested this on 6.6.0-rc7 and 6.1.0-13 mainline kernels, x86-64. mkdir /mnt/tmpfs sudo mount -t tmpfs -o size=1G,nr_inodes=10k,mode=777 tmpfs /mnt/tmpfs sudo chmod 666 /mnt/tmpfs Run the attached program. It reports an open failure (errno 22, EINVAL) but still manages to create the file. Note this was original discovered by running stress-ng on tmpfs with the open stressor: stress-ng --open 1 Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2041670/comments/0 ------------------------------------------------------------------------ On 2023-10-27T14:30:36+00:00 colin.i.king wrote: See also: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2041670 Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2041670/comments/3 ------------------------------------------------------------------------ On 2023-10-27T14:36:29+00:00 colin.i.king wrote: Also occurs on ramfs too. Seems to occur on kernels from 4.4.x to current 6.6-rc6 (not tested anything newer). Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2041670/comments/4 ------------------------------------------------------------------------ On 2023-10-27T14:48:49+00:00 aros wrote: Confirming and CC'ing Christian Brauner. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2041670/comments/5 ------------------------------------------------------------------------ On 2023-10-27T14:50:39+00:00 aros wrote: Actually Hugh Dickins added O_DIRECT support, CC'ing him as well. Reply at: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2041670/comments/6 ** Changed in: linux Status: Unknown => Confirmed ** Changed in: linux Importance: Unknown => Medium -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/2041670 Title: tmpfs: O_DIRECT | O_CREATE open reports open failure but actually creates a file. Status in Linux: Confirmed Status in linux package in Ubuntu: New Bug description: creating a file on tmpfs with open(filename, O_RDWR | O_DIRECT | O_CREAT, 0666) reports an open failure error EINVAL, but still creates the file. The file should not be created if we hit such an error. Tested and fails on: mantic amd64: 6.5.0-10-generic lunar amd64: 6.2.0-35-generic jammie amd64: 5.15.0-generic focal: 5.4.0-165-generic bionic: 4.15.0-213-generic trusty: 4.4.0-148-generic sudo mkdir /mnt/tmpfs sudo mount -t tmpfs -o size=1G,nr_inodes=10k,mode=777 tmpfs /mnt/tmpfs sudo chmod 666 /mnt/tmpfs gcc reproducer.c -o reproducer sudo ./reproducer Run the attached program. It reports an open failure (errno 22, EINVAL) but still manages to create the file. Note this was original discovered by running stress-ng on tmpfs with the open stressor: stress-ng --open 1 To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/2041670/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
