Hi Ted,

On Wed, 29 May 2019 at 09:26, Theodore Ts'o tytso@mit.edu wrote:

On Wed, May 29, 2019 at 10:52:56AM +0800, kernel test robot wrote:

...

FYI, we noticed the following commit (built with gcc-7):

commit: 079f9927c7bfa026d963db1455197159ebe5b534 ("ext4: gracefully handle ext4_break_layouts() failure during truncate") https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master

I do have found this problem on linux next 20190528 on x86_64, i386, arm64 and arm architectures. But, this failure is not easy to reproduce. so thought of sharing report with steps to reproduce and got delayed.

Jan --- this is the old version of your patch, which I had dropped before sending a push request to Linus. However, I forgot to reset the dev branch so it still had the old patch on it, and so it got picked up in linux-next. Apologies for the confusion.

I've reset the dev branch on ext4.git, and the new version of your patch will show up there shortly, as I start reviewing patches for the next merge window.

However, Thanks for looking into this problem. I will keep monitoring this mmap16 failure and let you know when it will get fixed.

- Naresh