Hi Chandan, On Thu, Nov 29, 2018 at 04:08:31PM +0530, Chandan Rajendra wrote: > On Monday, November 26, 2018 11:04:35 PM IST Theodore Y. Ts'o wrote: > > On Sun, Nov 25, 2018 at 11:00:38PM -0500, Theodore Y. Ts'o wrote: > > > > > > It might be that the simplest way to solve things is to merge the f2fs > > > dev branch up to 79c66e75720c. This will have the net effect of > > > including the five patches listed above onto the fscrypt git tree. So > > > long you don't plan to rebase or otherwise change these five patches, > > > it should avoid any merge conflicts. > > > > I've set up a git branch which has the f2fs dev branch, 4.20-rc4, the > > fsverity patches, and part of Chandan's patch series here: > > > > git://git.kernel.org/pub/scm/linux/kernel/git/tytso/fscrypt.git test-working > > > > There is a minor conflict when I did a trial merge with f2fs.git's dev > > branch, but it's pretty obvious to how to resolve it. > > > > Jaegeuk, Eric, Chandan, please take a look and let me know what you > > think. > > Ted, > > I have addressed the review comments provided by Eric. Hence three out of > the four patches in the test-working branch have new changes. I also got > UBIFS to use CONFIG_FS_ENCRYPTION instead of the per-filesystem config > symbol. > > I am currently executing fstests to verify the changes. > > > Eric, > > When executing generic/900, I noticed that sometimes xfs_io would get stuck > for an indefinite period. /proc/<pid of xfs_io>/stack showed that the task was > stuck in tty_read() inside the kernel. The following change fixed it, > > diff --git a/tests/generic/900 b/tests/generic/900 > index 290889ce..0831eed4 100755 > --- a/tests/generic/900 > +++ b/tests/generic/900 > @@ -83,7 +83,7 @@ _fsv_create_enable_file $fsv_file >> $seqres.full > echo "* reading" > $XFS_IO_PROG -r $fsv_file -c '' > echo "* xfs_io writing, should be O_RDWR" > -$XFS_IO_PROG $fsv_file |& _filter_scratch > +$XFS_IO_PROG -c '' $fsv_file 2>&1 | _filter_scratch > echo "* bash >>, should be O_APPEND" > bash -c "echo >> $fsv_file" |& _filter_scratch > echo "* bash >, should be O_WRONLY|O_CREAT|O_TRUNC" > > xfs_io gets into interactive mode when invoked without a "-c cmd" string. > > However, I am not able recreate the scenario once again without the above > changes applied. I am not sure about what changed. > The test is opening a verity file for read+write access, which should fail. But it's incorrectly succeeding, hence the test is right to not pass. Did you add the missing call to ext4_set_inode_flags() in ext4_set_verity() as I suggested? (But I'll make the suggested change to the test too, so it fails cleanly in this case rather than hangs reading from stdin.) - Eric
