search for: slub_debug

...it is not visible. In all cases, the machine becomes unresponsive, except for the MagicSysRq combo which works as expected. The problem occurs also with the new kernel 3.5.0-rc2. I never observed it with kernel 3.3.7 or older. The problem disappears if any of these conditions is met: * the "slub_debug" kernel option is enabled, or * the SLAB memory manager is used instead of SLUB, or * the nouveau.ko module is disabled. When the nouveau.ko module is disabled, the machine passes the whole boot into text mode, and after nouveau is loaded manually with modprobe, it stays working until X is st...

...instead >> >> ten to fifteen) than with 1.3, please see trace below: >> >> >> >> http://xdel.ru/downloads/oops-old-qemu.txt >> > >> > Single bit memory error, apparently. Try: >> > >> > 1. memtest86. >> > 2. Boot with slub_debug=ZFPU kernel parameter. >> > 3. Reproduce on different machine >> > >> > >> >> Hi Marcelo, >> >> I always follow the rule - if some weird bug exists, check it on >> ECC-enabled machine and check IPMI logs too before start complaining >>...

...BUG_SG is used, because it makes the DMA API layer > > verify the addresses passed to it, and so the user will get a reliable > > stacktrace. > > Why not just do it unconditionally? Sounds better than "50% of the time > this will catch bugs". Because kmalloc (with slub_debug) detects buffer overflows better than vmalloc. vmalloc detects buffer overflows only at a page boundary. This is intended for debugging kernels and debugging kernels should detect as many bugs as possible. Mikulas

https://bugs.freedesktop.org/show_bug.cgi?id=50375 Bug #: 50375 Summary: NV11: KMS/fbcon accel failing after scrolling/tty switch Classification: Unclassified Product: xorg Version: unspecified Platform: x86 (IA32) OS/Version: Linux (All) Status: NEW Severity: normal Priority:

...attachment.cgi?id=599&action=edit nfqueue tester Hi! Some users have reported kernel OOPs [0][1] using opensnitch, an app that uses libnetfilter_queue to allow or deny connections. These users configured several hardening parameters of the kernel, and the one that is causing this problem is: slub_debug=FZP The versions of libnetfilter_queue used are 1.0.3 (Debian/GNU) and 1.0.5 (ArchLinux). I've narrowed the problem down to nfq_set_verdict(), and only when allowing a connection. I've also reproduced it with the tester attached, a minimal version of this one: https://raw.githubuserconte...

On Mon 23-04-18 10:06:08, Mikulas Patocka wrote: > > > On Sat, 21 Apr 2018, Matthew Wilcox wrote: > > > On Fri, Apr 20, 2018 at 05:21:26PM -0400, Mikulas Patocka wrote: > > > On Fri, 20 Apr 2018, Matthew Wilcox wrote: > > > > On Fri, Apr 20, 2018 at 04:54:53PM -0400, Mikulas Patocka wrote: > > > > > On Fri, 20 Apr 2018, Michal Hocko wrote:

On Mon 23-04-18 10:06:08, Mikulas Patocka wrote: > > > On Sat, 21 Apr 2018, Matthew Wilcox wrote: > > > On Fri, Apr 20, 2018 at 05:21:26PM -0400, Mikulas Patocka wrote: > > > On Fri, 20 Apr 2018, Matthew Wilcox wrote: > > > > On Fri, Apr 20, 2018 at 04:54:53PM -0400, Mikulas Patocka wrote: > > > > > On Fri, 20 Apr 2018, Michal Hocko wrote:

https://bugs.freedesktop.org/show_bug.cgi?id=61953 Priority: medium Bug ID: 61953 Assignee: nouveau at lists.freedesktop.org Summary: arbitrary memory access corrupts kernel memory, eventually crashing the kernel QA Contact: xorg-team at lists.x.org Severity: major Classification: Unclassified OS:

...4.3 kernel, a bisect does not feel like the best start. What is that 02fc method which fbcon is probably triggering as hardware-acceleration on nouveau side. Thanks, Bruno Below, a grep for nouveau on kernel log: Nov 24 18:27:27 zeus kernel: Kernel command line: BOOT_IMAGE=5.3.12 ro root=802 slub_debug=FZP nouveau.runpm=1 nouveau.debug=debug console=ttyS0,115200 nouveau.agpmode=0 Nov 24 18:27:27 zeus kernel: nouveau 0000:01:00.0: NVIDIA NV04 (20044001) Nov 24 18:27:27 zeus kernel: nouveau 0000:01:00.0: bios: trying PRAMIN... Nov 24 18:27:27 zeus kernel: nouveau 0000:01:00.0: bios: 00000260: NPDE...

...hould help confirm that's it's indeed fbcon causing this stuff. I think at least, not a nouveau expert. -Daniel > > Thanks, > Bruno > > > > Below, a grep for nouveau on kernel log: > > Nov 24 18:27:27 zeus kernel: Kernel command line: BOOT_IMAGE=5.3.12 ro root=802 slub_debug=FZP nouveau.runpm=1 nouveau.debug=debug console=ttyS0,115200 nouveau.agpmode=0 > Nov 24 18:27:27 zeus kernel: nouveau 0000:01:00.0: NVIDIA NV04 (20044001) > Nov 24 18:27:27 zeus kernel: nouveau 0000:01:00.0: bios: trying PRAMIN... > Nov 24 18:27:27 zeus kernel: nouveau 0000:01:00.0: bios:...

Hi, With 3.13-rc1 and 3.13-rc2 kernel crashes/BUGs while loading nouveau: [ 657.654915] ACPI Warning: \_SB_.PCI0.IXVE.IGPU._DSM: Argument #4 type mismatch - Found [Integer], ACPI requires [Package] (20131115/nsarguments-95) [ 657.655099] ACPI Warning: \_SB_.PCI0.IXVE.IGPU._DSM: Argument #4 type mismatch - Found [Buffer], ACPI requires [Package] (20131115/nsarguments-95) [ 657.655270] checking

...sr/bin/Xorg -noreset -nolisten tcp -verbose vt7): X.Org X Server 1.15.0 Release Date: 2013-12-27 X Protocol Version 11, Revision 0 Build Operating System: Linux 3.17.0-kvm x86_64 Gentoo Current Operating System: Linux sisyphe 3.18.0-kvm #1 SMP Mon Dec 8 19:05:52 CET 2014 x86_64 Kernel command line: slub_debug=FZP root=/dev/sda2 iommu=1 Build Date: 26 October 2014 07:21:14PM Current version of pixman: 0.32.4 Before reporting problems, check http://wiki.x.org to make sure that you have the latest version. Markers: (--) probed, (**) from config file, (==) default setting, (++) fr...