Messages in this thread | | | Date | Mon, 12 Feb 2018 11:10:26 -0500 | From | Theodore Ts'o <> | Subject | Re: ext4 iomap SEEK broken [was: [GIT PULL] ext4 updates for 4.15] |
| |
On Mon, Feb 12, 2018 at 01:14:07PM +0100, Jiri Slaby wrote: > On 02/12/2018, 11:02 AM, Jiri Slaby wrote: > > Given this happens only on 32bit kernel, I assume some 32bit overflow. > > But I am unable to see it (yet). > > Just to add, a diff of strace in good and bad kernels: > @@ -655,14 +655,4 @@ > _llseek(3, 4275568640, [4286054400], SEEK_DATA) = 0 > _llseek(3, 4286054400, [4288675840], SEEK_HOLE) = 0 > _llseek(3, 4288675840, [4299161600], SEEK_DATA) = 0 > -_llseek(3, 4299161600, [4301783040], SEEK_HOLE) = 0 > +_llseek(3, 4299161600, [4299161600], SEEK_HOLE) = 2621440 > > llseek returns a very invalid value when it comes to 0x100400000.
Thanks for the bugreport! Can you send me the output of "filefrag -v" on the file so I can make sure we can exactly replicate what you're seeing?
Thanks,
- Ted
| |