Public bug reported: When selecting Memtest86+ on latest pre-prod NVL system with following log:
!!!! X64 Exception Type - 0E(#PF - Page-Fault) CPU Apic ID - 00000010 !!!! ExceptionData - 0000000000000003 I:0 R:0 U:0 W:1 P:1 PK:0 SS:0 SGX:0 RIP - 000000005E221318, CS - 0000000000000038, RFLAGS - 0000000000210046 RAX - 0000000000000030, RCX - 000000005D97C7E0, RDX - 0000000000000001 RBX - 0000000000000000, RSP - 00000000626AC380, RBP - 00000000626AC3B0 RSI - 000000005E3CDE3E, RDI - 000000005D96BEE0 R8 - 000000005D97C7E0, R9 - 0000000000000000, R10 - 000000005E3C7DE8 R11 - 0000000000000012, R12 - 0000000000000048, R13 - 000000005DF0EB20 R14 - 000000005E21E8D7, R15 - 000000005EAC5000 DS - 0000000000000030, ES - 0000000000000030, FS - 0000000000000030 GS - 0000000000000030, SS - 0000000000000030 CR0 - 0000000080010033, CR2 - 000000005E21E8EA, CR3 - 0000000061401000 CR4 - 0000000000040668, CR8 - 0000000000000000 DR0 - 0000000000000000, DR1 - 0000000000000000, DR2 - 0000000000000000 DR3 - 0000000000000000, DR6 - 00000000FFFF0FF0, DR7 - 0000000000000400 GDTR - 0000000064CFA000 0000000000000057, LDTR - 0000000000000000 IDTR - 0000000060AD3018 0000000000000FFF, TR - 0000000000000048 FXSAVE_STATE - 0000000064CF9460 !!!! Can't find image information. !!!! __________ In future platforms, EFI implements EFI_MEMORY_ATTRIBUTE_PROTOCOL ( https://github.com/tianocore/edk2/commit/2d69507a4dde02f1abf20c7eb3a43d1d3ef6b98f ) which is being taken in latest Grub 2.14 from Ubuntu26, ubuntu24 uses legacy path which does not use these memory attributes and hence not seen in ubuntu24. The fix is already in upstream grub: https://gitlab.freedesktop.org/gnu-grub/grub/-/commit/62289192bb45bd90f5917c53fd29083d9a9672b1 This patch needs to be backported and released to ubuntu26 grub. ** Affects: grub2 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2158502 Title: Memtest86+ fails with pagefault on Ubuntu26.04 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/2158502/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
