search for: mo1fjvdog6e8_smb_1

On 2020-04-29 00:40, Jeremy Allison via samba wrote: > On Mon, Apr 27, 2020 at 11:21:35PM +0200, A L wrote: >> I set up the following test case: >> * Linux 5.7-rc3 (with the patch from previous mail) >> * samba-4.12.1 >> * gcc-9.3.0 >> * liburing-0.6 >> * glibc-2.30-r8 >> >> ================================= >> Test 1) >> Copy 10 10GB

...the corrupt file started to contain only binary zero. > At position 0x800000 the zeroes ended and correct data continued. To me it > sound like some wrong memory is copied somehow. > > These two files shows the difference as shown in a hex-editor. > https://paste.tnonline.net/files/MO1FJvDOG6E8_smb_1 > https://paste.tnonline.net/files/Rglite4KWmU8_smb_2 Is it always the same area in the file that is corrupt ? The fact that it's on a 4K page-aligned boundary is interesting. If you can corrolate I'd love to see the SMB2 traffic on the wire that corresponds to the corrupted data write/...

...e. At position 0x7A0000 the corrupt file started to contain only binary zero. At position 0x800000 the zeroes ended and correct data continued. To me it sound like some wrong memory is copied somehow. These two files shows the difference as shown in a hex-editor. https://paste.tnonline.net/files/MO1FJvDOG6E8_smb_1 https://paste.tnonline.net/files/Rglite4KWmU8_smb_2 I will redo the tests with different Windows clients and see if that shows different results.

...tarted to contain only binary zero. >> At position 0x800000 the zeroes ended and correct data continued. To me it >> sound like some wrong memory is copied somehow. >> >> These two files shows the difference as shown in a hex-editor. >> https://paste.tnonline.net/files/MO1FJvDOG6E8_smb_1 >> https://paste.tnonline.net/files/Rglite4KWmU8_smb_2 > Is it always the same area in the file that is corrupt ? > The fact that it's on a 4K page-aligned boundary is > interesting. If you can corrolate I'd love to see > the SMB2 traffic on the wire that corresponds to th...