Hi Dave, Tried with the latest tip and I still observe the issue. I tried 2G, 4G and 8G sized requests and as before, 2GB size requests works fine but 4GB and 8GB requests failed. Commit I have applied my test patch: commit 038ef9928e1acb37bbe808c23a421189f1fd96cb (origin/x86/sgx) Merge: e0a5915f1cca e0dccc3b76fb Author: Ingo Molnar <mingo@xxxxxxxxxx> Date: Tue Jul 26 09:14:28 2022 +0200 Merge tag 'v5.19-rc8' into x86/sgx, to resolve conflicts Kernel version: Linux sdp 5.19.0-rc8-custom #1 SMP PREEMPT_DYNAMIC Fri Jul 29 10:28:25 PDT 2022 x86_64 x86_64 x86_64 GNU/Linux Thanks, -Vijay > -----Original Message----- > From: Hansen, Dave <dave.hansen@xxxxxxxxx> > Sent: Friday, July 29, 2022 9:38 AM > To: Dhanraj, Vijay <vijay.dhanraj@xxxxxxxxx>; Chatre, Reinette > <reinette.chatre@xxxxxxxxx>; dave.hansen@xxxxxxxxxxxxxxx; > jarkko@xxxxxxxxxx; linux-sgx@xxxxxxxxxxxxxxx > Cc: Huang, Haitao <haitao.huang@xxxxxxxxx> > Subject: Re: Support SGX2 V5: Seg-fault with EACCEPT for large number of > EPC pages > > On 7/29/22 09:01, Dhanraj, Vijay wrote: > > Huang, Haitao and I created a simple patch to repro this issue using the SGX > selftests and we do see the issue when using V5 (5.18.0-rc5) but cannot > repro the issue in V4 (5.18.0-rc2). Not sure if this is a driver issue or kernel, > can you please check? > > Thanks for the report. > > Could you please try the code that's going to go to Linus shortly? It's really > the only version that matters at this point? > > https://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git/log/?h=x86/sgx