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Unprivileged user can crash kernel by using DRM_IOCTL_NOUVEAU_CHANNEL_ALLOC ioctl. This was reported by trinity[1] fuzzer. [ 71.073906] nouveau 0000:01:00.0: crashme[1329]: channel failed to initialise, -17 [ 71.081730] BUG: kernel NULL pointer dereference, address: 00000000000000a0 [ 71.088928] #PF: supervisor read access in kernel mode [ 71.094059] #PF: error_code(0x0000) - not-present page [ 71.099189] PGD 119590067 P4D 119590067 PUD 1054f5067 PMD 0...

...t; wrote: > > Hi, > > On Fri, Aug 28, 2020 at 11:28:46AM +0200, Frantisek Hrbata wrote: > > Unprivileged user can crash kernel by using DRM_IOCTL_NOUVEAU_CHANNEL_ALLOC > > ioctl. This was reported by trinity[1] fuzzer. > > > > [ 71.073906] nouveau 0000:01:00.0: crashme[1329]: channel failed to initialise, -17 > > [ 71.081730] BUG: kernel NULL pointer dereference, address: 00000000000000a0 > > [ 71.088928] #PF: supervisor read access in kernel mode > > [ 71.094059] #PF: error_code(0x0000) - not-present page > > [ 71.099189] PGD 119...

Hi, On Fri, Aug 28, 2020 at 11:28:46AM +0200, Frantisek Hrbata wrote: > Unprivileged user can crash kernel by using DRM_IOCTL_NOUVEAU_CHANNEL_ALLOC > ioctl. This was reported by trinity[1] fuzzer. > > [ 71.073906] nouveau 0000:01:00.0: crashme[1329]: channel failed to initialise, -17 > [ 71.081730] BUG: kernel NULL pointer dereference, address: 00000000000000a0 > [ 71.088928] #PF: supervisor read access in kernel mode > [ 71.094059] #PF: error_code(0x0000) - not-present page > [ 71.099189] PGD 119590067 P4D 119590067...

...it and don''t know why. Here is the setup: I have an action that will crash my debian sarge development box using fcgid, fastcgi and scgi running with Apache2, as well as fastcgi running with lighttpd, every time. Here is the action from the controller: ------------------- def crashme @orders = Order.find(:all, :order => "`id` ASC", :offset => 0, :limit => 200) emails_array = Array.new @orders.each{ |order| a_email = OrderMailer.create_a(order, price, pre_tax_price, sales_tax) emails_array << a_email if order.conf...

...43 in glutCreateWindow () from /usr/lib/i386-linux-gnu/libglut.so.3 #21 0x0808b6c2 in main () I could drill it down to a testcase like this: (You can view and clone the source from my github repository: https://github.com/daniel-kun/llvmcrash ) daniel at ubuntu32-dev:~/projects/llvmcrash/app$ cat crashme.cpp // Shared Library that is linked to the program "app" #include <llvm/IR/LLVMContext.h> llvm::LLVMContext c; void foo () { } daniel at ubuntu32-dev:~/projects/llvmcrash/app$ cat app.cpp // Main program that links "libcrashme.so" and initializes OpenGL // - which in t...

...bug.cgi?id=1084 2) [Installation] Fedora8 IA32e guest installation failure. http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1118 3) PV drivers can not build with RHEL5 kenrel. http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1116 4) [Stress] HVM RHEL5.1 guest crashed when running crashme. This issue should be fixed by Changeset 16485. Will retest in next changeset. 5) [Guest Test] SMP VISTA HVM guest might be blue screen when doing large I/O in dom0 http://bugzilla.xensource.com/bugzilla/show_bug.cgi?id=1117 6) [Device Model] vnif can not coexist with 8139 nic. http://bugz...

Hi all, This is today''s xen nightly test report, Xen changeset: #16492 (unstable tree).  Xen0: #325 No new issue today. 1 issue has been fixed. Fixed issue: ================================================= 1) [Stress] HVM RHEL5.1 guest crashed when running crashme. This issue should be fixed by Changeset 16485. Old issues : ================================================= 1) Booting xp and 2k3 guest will get blue or black screen on PAE Dexuan has fixed it. The changeset is in staging tree: 16518: 6706934cdf9d 2) Can not install 32bit Fedora 7 with vcpu...

Hello, I''m facing a strange issue with network card PCI passthrough on my openwrt test domU. - With network PCI passthrough, DNS lookup failed for some domains (exemple, google.com) but not for other (free.fr my ISP, or my domain jbfavre.org). I can ping an IP address without any problem. - Starting domU as a "normal" (ie without PCI passthrough), no problem. As far as I can

...not be able to access data that doesn''t belong to them, or crash the system. Efforts should be made to bound the scope of ''denial of quality of service'' attacks too. A useful tool to help test the integrity of the xen guest API would be a xen equivalent of the ''crashme'' tool used for testing the Linux process API. The tool would attempt to upset Xen by operating like a normal guest but using random numbers to perturb hypercall arguments, make ''difficult'' corruptions to pagetables and other structures etc. (e.g. mutually recusrsive page...