On Thu, Oct 24, 2013 at 6:24 PM, Outback Dingo <outbackdingo_at_gmail.com>wrote: > > > > On Thu, Oct 24, 2013 at 6:17 PM, Roger Pau Monné <roger.pau_at_citrix.com>wrote: > >> On 24/10/13 22:15, Konstantin Belousov wrote: >> > On Thu, Oct 24, 2013 at 09:45:20PM +0100, Roger Pau Monn? wrote: >> >> On 24/10/13 13:01, Outback Dingo wrote: >> >>> >> >>> >> >>> On Thu, Oct 24, 2013 at 6:16 AM, Roger Pau Monn? < >> roger.pau_at_citrix.com >> >>> <mailto:roger.pau_at_citrix.com>> wrote: >> >>> >> >>> On 24/10/13 03:02, Outback Dingo wrote: >> >>> > --- trap 0, rip = 0, rsp = 0xfffffe00002c6b70, rbp = 0 --- >> >>> > uma_zalloc_arg: zone "16" with the following non-sleepable >> locks held: >> >>> > exclusive sleep mutex balloon_lock (balloon_lock) r = 0 >> >>> > (0xffffffff816e9c58) locked _at_ >> >>> /usr/src/sys/dev/xen/balloon/balloon.c:339 >> >>> > exclusive sleep mutex balloon_mutex (balloon_mutex) r = 0 >> >>> > (0xffffffff816e9c38) locked _at_ >> >>> /usr/src/sys/dev/xen/balloon/balloon.c:373 >> >>> > KDB: stack backtrace: >> >>> > db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame >> >>> > 0xfffffe00002c67c0 >> >>> > kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe00002c6870 >> >>> > witness_warn() at witness_warn+0x4a8/frame 0xfffffe00002c6930 >> >>> > uma_zalloc_arg() at uma_zalloc_arg+0x3b/frame 0xfffffe00002c69a0 >> >>> > malloc() at malloc+0x101/frame 0xfffffe00002c69f0 >> >>> > balloon_process() at balloon_process+0x44a/frame >> 0xfffffe00002c6a70 >> >>> > fork_exit() at fork_exit+0x84/frame 0xfffffe00002c6ab0 >> >>> > fork_trampoline() at fork_trampoline+0xe/frame >> 0xfffffe00002c6ab0 >> >>> > --- trap 0, rip = 0, rsp = 0xfffffe00002c6b70, rbp = 0 --- >> >>> > uma_zalloc_arg: zone "16" with the following non-sleepable >> locks held: >> >>> > exclusive sleep mutex balloon_lock (balloon_lock) r = 0 >> >>> > (0xffffffff816e9c58) locked _at_ >> >>> /usr/src/sys/dev/xen/balloon/balloon.c:339 >> >>> > exclusive sleep mutex balloon_mutex (balloon_mutex) r = 0 >> >>> > (0xffffffff816e9c38) locked _at_ >> >>> /usr/src/sys/dev/xen/balloon/balloon.c:373 >> >>> > KDB: stack backtrace: >> >>> > db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame >> >>> > 0xfffffe00002c67c0 >> >>> > kdb_backtrace() at kdb_backtrace+0x39/frame 0xfffffe00002c6870 >> >>> > witness_warn() at witness_warn+0x4a8/frame 0xfffffe00002c6930 >> >>> > uma_zalloc_arg() at uma_zalloc_arg+0x3b/frame 0xfffffe00002c69a0 >> >>> > malloc() at malloc+0x101/frame 0xfffffe00002c69f0 >> >>> > balloon_process() at balloon_process+0x44a/frame >> 0xfffffe00002c6a70 >> >>> > fork_exit() at fork_exit+0x84/frame 0xfffffe00002c6ab0 >> >>> > fork_trampoline() at fork_trampoline+0xe/frame >> 0xfffffe00002c6ab0 >> >>> > --- trap 0, rip = 0, rsp = 0xfffffe00002c6b70, rbp = 0 --- >> >>> > uma_zalloc_arg: zone "16" with the following non-sleepable >> locks held: >> >>> >> >>> Did you do anything specific to trigger the crash? Can you >> explain the >> >>> steps needed to reproduce it? >> >>> >> >>> >> >>> just recompiled a kernel, and booted it scrolls continuously across >> the >> >>> screen >> >>> doesnt seem to ever stop. >> >> >> >> I've tried r257051 and it seems to work fine, could you please post >> your >> >> Xen version, the config file used to launch the VM and the toolstack >> used? >> > >> > Do you have witness enabled in your kernel config ? >> >> Yes, but I'm not touching balloon memory target. >> >> > There is an obvious case of calling malloc(M_WAITOK) while holding both >> > balloon_lock and balloon_mutex: >> > ballon_process->decrease_reservation->balloon_append. >> >> Yes, I'm aware of that, it's just that it shouldn't happen unless you >> actually trigger a balloon memory decrease, which should not happen >> automatically AFAIK, that's why I was asking if this was happening >> without the user specifically requesting it. >> >> Anyway, this should be clearly fixed and pulled into 10 no matter what >> triggered it. I will send a patch as soon as possible. >> >> > Yes, WITNESS was enabled, im using Kubuntu / XEN kernel / and > virt-manager.... it was fine running Current, until i ran updates this week > then encountered this. Ive since disabled WITNESS with a recompile, but the > VM still apears more sluggish then before. > > root_at_M14xR2:/home/dingo# xm info > host : M14xR2 > release : 3.11.0-12-generic > version : #19-Ubuntu SMP Wed Oct 9 16:20:46 UTC 2013 > machine : x86_64 > nr_cpus : 4 > nr_nodes : 1 > cores_per_socket : 2 > threads_per_core : 2 > cpu_mhz : 2494 > xen:/// capabilities: > <capabilities> > > <host> > <cpu> > <arch>x86_64</arch> > <features> > <pae/> > </features> > </cpu> > <power_management> > <suspend_mem/> > <suspend_disk/> > <suspend_hybrid/> > </power_management> > <migration_features> > <live/> > <uri_transports> > <uri_transport>xenmigr</uri_transport> > </uri_transports> > </migration_features> > </host> > > <guest> > <os_type>xen</os_type> > <arch name='x86_64'> > <wordsize>64</wordsize> > <emulator>qemu-dm</emulator> > <machine>xenpv</machine> > <domain type='xen'> > </domain> > </arch> > </guest> > > <guest> > <os_type>xen</os_type> > <arch name='i686'> > <wordsize>32</wordsize> > <emulator>qemu-dm</emulator> > <machine>xenpv</machine> > <domain type='xen'> > </domain> > </arch> > <features> > <pae/> > </features> > </guest> > > <guest> > <os_type>hvm</os_type> > <arch name='i686'> > <wordsize>32</wordsize> > <emulator>qemu-dm</emulator> > <loader>hvmloader</loader> > <machine>xenfv</machine> > <domain type='xen'> > </domain> > </arch> > <features> > <pae/> > <nonpae/> > <acpi default='on' toggle='yes'/> > <apic default='on' toggle='no'/> > <hap default='off' toggle='yes'/> > <viridian default='off' toggle='yes'/> > </features> > </guest> > > <guest> > <os_type>hvm</os_type> > <arch name='x86_64'> > <wordsize>64</wordsize> > <emulator>qemu-dm</emulator> > <loader>hvmloader</loader> > <machine>xenfv</machine> > <domain type='xen'> > </domain> > </arch> > <features> > <acpi default='on' toggle='yes'/> > <apic default='on' toggle='no'/> > <hap default='off' toggle='yes'/> > <viridian default='off' toggle='yes'/> > </features> > </guest> > > </capabilities> > > > > hw_caps : > bfebfbff:28100800:00000000:00007f00:77bae3bf:00000000:00000001:00000281 > virt_caps : hvm > total_memory : 8074 > free_memory : 12 > free_cpus : 0 > xen_major : 4 > xen_minor : 3 > xen_extra : .0 > xen_caps : xen-3.0-x86_64 xen-3.0-x86_32p hvm-3.0-x86_32 > hvm-3.0-x86_32p hvm-3.0-x86_64 > xen_scheduler : credit > xen_pagesize : 4096 > platform_params : virt_start=0xffff800000000000 > xen_changeset : > xen_commandline : placeholder > cc_compiler : gcc (Ubuntu/Linaro 4.8.1-10ubuntu5) 4.8.1 > cc_compile_by : stefan.bader > cc_compile_domain : canonical.com > cc_compile_date : Wed Oct 2 11:17:12 UTC 2013 > xend_config_format : 4 > root_at_M14xR2:/home/dingo# uname -a > Linux M14xR2 3.11.0-12-generic #19-Ubuntu SMP Wed Oct 9 16:20:46 UTC 2013 > x86_64 x86_64 x86_64 GNU/Linux > and it appears to be XEN 4.3 kernel from installed via Kubuntu apt-getReceived on Thu Oct 24 2013 - 20:26:47 UTC
This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:40:43 UTC