[Devel] invalid victim pointer in oom context

Hi guys, We're seeing kernel crashes while dumping kernel stack durring OOM timeout. Here we see that the victim pointer is not valid. Is it known issue? [2725959.095523] RIP: 0010:[] [] dump_trace+0x1df/0x2d0 [2725959.096079] RSP: :8803020abcb0 EFLAGS: 00010283 [2725959.096741] RAX:

Re: [Devel] lockdep_assert_held is triggering with the shrinker counter

On 1/9/18, Kirill Tkhai <ktk...@virtuozzo.com> wrote: > Hi, Denis, > > Feel free to CC commit author in the future ;) > > On 06.01.2018 21:44, Denis Kirjanov wrote: >> Hi guys, >> >> the following commit triggers the splat in dmesg: >> >> >

[Devel] lockdep_assert_held is triggering with the shrinker counter

Hi guys, the following commit triggers the splat in dmesg: The commit is pushed to "branch-rh7-3.10.0-514.26.1.vz7.35.x-ovz" and will appear at https://src.openvz.org/scm/ovz/vzkernel.git after rh7-3.10.0-514.26.1.vz7.35.5 --> commit 6fd774dbf6fd05eca8cfa192753bf35dac694368 Author: Kirill

Re: [Devel] double faults in Virtuozzo KVM

>> > > _Some_ of them related to the fact that during the faults RSP points >> > > to userspace and it leads to double-fault scenario. >> > >> > The postmortem you quote doesn't support that. >> >> >> I'll post a relevant trace Here it is: [32065.459255] double fault: [#1] SMP

Re: [Devel] double faults in Virtuozzo KVM

On Thursday, September 28, 2017, Roman Kagan <rka...@virtuozzo.com> wrote: > On Thu, Sep 28, 2017 at 05:55:51PM +0300, Denis Kirjanov wrote: > > Hi, we're seeing double faults in async_page_fault. > > async_page_fault is the #PF handler in KVM guests. It filters out >

[Devel] double faults in Virtuozzo KVM

Hi, we're seeing double faults in async_page_fault. _Some_ of them related to the fact that during the faults RSP points to userspace and it leads to double-fault scenario. Is it known problem? Thanks! [11587.895394] Hardware name: Virtuozzo KVM, BIOS 1.9.1-5.3.2.vz7.6 04/01/2014 [11587.895394]

[Devel] BUG with __destroy_inode. dirtied_ub is not NULL

Hi, with the kernel 2.6.32-042stab123.3 we're seeing a following bug: PID: 126TASK: 880816f2d260 CPU: 1 COMMAND: "kswapd0" #0 [880816f33870] machine_kexec at 8103e3c9 #1 [880816f338d0] crash_kexec at 810e42d2 #2 [880816f339a0] oops_end at 8154c0a0

Re: [Devel] WARNING at mm/slub.c

On 3/16/17, Denis Kirjanov <dkirja...@cloudlinux.com> wrote: > Hi guys, > > with the kernel rh7-3.10.0-327.36.1.vz7.18.7 we're seeing the > following WARNING while running LTP test suite: > > [11796.576981] WARNING: at mm/slub.c:1252 > slab_pre_alloc_hoo

[Devel] WARNING at mm/slub.c

Hi guys, with the kernel rh7-3.10.0-327.36.1.vz7.18.7 we're seeing the following WARNING while running LTP test suite: [11796.576981] WARNING: at mm/slub.c:1252 slab_pre_alloc_hook.isra.42.part.43+0x15/0x17() [11796.591008] Call Trace: [11796.592065] [] dump_stack+0x19/0x1b [11796.593076] []