Re: [PATCH] selftests/x86: Fix malformed src_offset initialization

Borislav Petkov
2020-11-18T11:44:53Z

On Wed, Nov 18, 2020 at 12:18:00PM +0100, Jethro Beekman wrote:
> Just to double check, since you didn't show the /dev mount line: that
> is also not mounted noexec?

Yes:

udev on /dev type devtmpfs (rw,nosuid,noexec,relatime,size=8021332k,nr_inodes=2005333,mode=755,inode64)

but this is how udev mounts it by default. Now I did:

# mount /dev -o remount,exec

and I got

udev on /dev type devtmpfs (rw,nosuid,relatime,size=8021332k,nr_inodes=2005333,mode=755,inode64)

and now it fails differently:

0x0000000000000000 0x0000000000002000 0x03
0x0000000000002000 0x0000000000001000 0x05
0x0000000000003000 0x0000000000003000 0x03
encl_load: encl->nr_segments: 3
encl_load: seg2 offset: 0x3000, seg2 size: 12288
encl_load: encl_size: 32768, src_size: 24576
encl_map_area: encl_size: 32768
encl_map_area: area: 0x0x7feae0db2000
encl_map_area: encl_base: 0x7feae0db8000
SGX_IOC_ENCLAVE_INIT failed: errno=1

--
Regards/Gruss,
Boris.