similar to: [makedumpfile] extract vmcoreinfo from /proc/vmcore for Xen

vmcoreinfo file could exists under /sys/kernel (valid on baremetal only) and/or under /sys/hypervisor (valid when Xen dom0 is running). Read only one of them. It means that only one PT_NOTE will be always created. Remove extra code for second PT_NOTE creation. Signed-off-by: Daniel Kiper <daniel.kiper@oracle.com> --- kexec/crashdump-elf.c | 33 +++++++-------------------------- 1 files

With pretty trivial user mode programs being able to crash the kernel due to the ref counter widths in Xen being more narrow than in Linux, I started an attempt to put together a kernel side fix. While addressing the plain hypercalls is pretty strait forward, dealing with multicalls (both when using them for lazy mmu mode batching and when explicitly using them in e.g. netback - the backends are

This patch series includes a series of bugs related to p2m, ept, and PoD code which were found as part of our XenServer product testing. Each of these fixes actual bugs, and the 3.4-based version of the patch has been tested thoroughly. (There may be bugs in porting the patches, but most of them are simple enough as to make it unlikely.) Each patch is conceptually independent, so they can each

Moritz Muehlenhoff writes ("Re: Xen package security updates for jessie 4.4, XSA-213, XSA-214"): > On Thu, May 04, 2017 at 05:06:07PM +0100, Ian Jackson wrote: > > I have fixed these in stretch but the jessie package remains unfixed. > > I think I may be able to find some backports somewhere. Would that be > > useful ? Is anyone else working on this ? > >

This patch is for kexec-tools-testing-20080324. --- kexec/crashdump.c.org 2008-03-25 11:51:51.000000000 +0900 +++ kexec/crashdump.c 2008-03-26 09:29:20.000000000 +0900 @@ -110,10 +110,8 @@ return 0; } -/* Returns the physical address of start of crash notes buffer for a kernel. */ -int get_kernel_vmcoreinfo(uint64_t *addr, uint64_t *len) +static int get_vmcoreinfo(char *kdump_info, uint64_t

As far as I can tell, exceptions work just fine without RTTI when using gcc 3.4.2. dynamic_cast, on the hand, crashes without RTTI (no compilation error or warning is generated). Jeff Cohen wrote: > This may be the case with GCC, but VC++ allows exception handling to > be enabled while RTTI is disabled. According to VC++ documentation, > RTTI is needed only to support

Hi, I sent the following e-mail to kexec-mailing list (kexec@lists.infradead.org) since subjects of makedumpfile are discussed on the mailing list. I want to inform this to xen developers since I think this function is useful for xen developers. Thanks. Itsuro Oda (see https://sourceforge.net/projects/makedumpfile/ about makedumpfile command.) Forwarded by Itsuro ODA

Moritz Muehlenhoff writes ("Re: Xen package security updates for jessie 4.4, XSA-213, XSA-214"): > Yes, the distribution line should be jessie-security, but please send > a debdiff to team at security.debian.org for a quick review before > uploading (I have no idea whether dgit supports security-master). Here is the proposed debdiff (actually, a git diff) for xen in jessie. My

My understanding is that EH works fine without RTTI. However, we use typeid in LLVM in a few limited spots like lib/VMCore/Pass.cpp Reid. On Sat, 2005-04-23 at 20:12 -0700, Jeff Cohen wrote: > As far as I can tell, exceptions work just fine without RTTI when using > gcc 3.4.2. dynamic_cast, on the hand, crashes without RTTI (no > compilation error or warning is generated). > >

Hi, V6: The only change from V5 is in patch #6: - changed comment to reflect autoxlate - removed a redundant ASSERT - reworked logic a bit so that get_page_from_gfn() is called with NULL for p2m type as before. arm has ASSERT wanting it to be NULL. Tim: patch 4 needs your approval. Daniel: patch 5 needs your approval. These patches implement PVH dom0. Patches 1 and 2

Hi, I''ve not tried pv_ops for a long time but just got a new system (Supermicro X9DRL-iF) so decided to try 3.5.0 with the latest Xen 4.2-unstable, unfortunately the system crashes immediately after loading dom0: traps.c:486:d0 Unhandled invalid opcode fault/trap [#6] on VCPU 0 [ec=0000] I''ve tried loading both bzImage and vmlinuz (gzip compressed vmlinuz) with the same

In hvm enviroment, acpi failed. why? centos5.1 =================================================== [root@hvm001 ~]# xm dmesg __ __ _____ _ ____ ___ ____ _ ____ \ \/ /___ _ __ |___ / / | |___ \ / _ \___ \ ___| | ___| \ // _ \ \047_ \ |_ \ | | __) |_| (_) |__) | / _ \ |___ \ / \ __/ | | | ___) || |_ / __/|__\__, / __/ | __/ |___) | /_/\_\___|_| |_| |____(_)_(_)_____| /_/_____(_)___|_|____/

Hello, This series has been split into two patches, one for arm and one for x86. I figured that this was easier than doing it as a single combined patch, especially as the changes are functionally independent. x86 has been boot tested, but arm has not even been compile tested as I lack a suitable cross compiler. However, the changes are just text replacement, so I dont expect any issues. The

During our testing, we found this code path where xen attempts to grab the shadow_lock, while holding it - leading to a deadlock. >> free_dom_mem-> >> shadow_sync_and_drop_references-> >> shadow_lock -> ..................... first lock >> shadow_remove_all_access-> >> remove_all_access_in_page-> >> put_page-> >>

When booting a recently compiled Xen 4.2 on Ubuntu 12.04, dom0 crashes. I''ve included a serial console log below. I''ve used: Xen 4.2 unstable rev. 25483, compiled on the same machine. I had to apply the AT_EMPTY_PATH patch from http://lists.gnu.org/archive/html/qemu-devel/2012-02/msg03460.html to get it to compile. Linux 3.2.0-25, which is the default kernel in Ubuntu''s

Hi all, I had posted about MCA support for Intel64 before. It had only a function to log the MCA error data received from hypervisor. http://lists.xensource.com/archives/html/xen-devel/2008-09/msg00876.html I attach patches that support not only error logging but also Page Offlining function. The page where an MCA occurs will offline and not reuse. A new flag ''PGC_reserved''

Hi, I did a git pull on pv_ops tree this morning and now get a crash when eth0 is started, here is the full boot log: Booting ''Xen 3.4 / Linux 2.6.29-rc6-tip'' root (hd0,0) Filesystem type is ext2fs, partition type 0x83 kernel /xen.gz com1=115200,8n1 console=com1,vga iommu=1 [Multiboot-elf, <0x100000:0x131748:0x8e8b8>, shtab=0x2c0078, entry=0x100000] module

u.inuse.type_info is at the end of the pfn_info structure, and is u32 for both x86_32 and x86_64--in this location it can also be the last 32 bits of a page. several functions use bitopts.h functions to manipulate this member, and on x86_64 these functions use u64 instructions, which will overflow the page boundary, and possibly the end of memory as we see here: (XEN)

Hi! From other people posting to this list, I know that there has been a bug related to the issue described in Xen Security Advisory 36 that disables iommu for some AMD users like me. However, even when passing "iommu=no-amd-iommu-perdev-intremap" it still disables i/o virtualisatoin. Related Xen dmesg output: (XEN) IVHD Error: Invalid IO-APIC 0 (XEN) AMD-Vi: Error initialization

Hi Everyone I have sorted out the initial issues I''ve had and decided to give Xen another go. I''m trying to run Xen using kernel 2.6.37-rc3 (previous attempt with rc1 failed, and when I gave it a second go, rc3 was already out). As previously, 2.6.37-rc3 boots fine natively. 2.6.32 boots natively and under Xen as dom0, but I have reservations against running 2.6.32,