On Thu, Apr 13, 2017 at 11:41:37PM +0100, Ben Hutchings wrote : > Control: tag -1 moreinfo > > On Thu, 2017-04-13 at 11:18 +0200, Vincent Legout wrote: > > Package: src:linux > > Version: 3.16.39-1+deb8u2 > > Severity: normal > > > > Hi, > > > > A xen jessie domU crashes around 5 minutes after the boot with the > > attached backtrace (at every boot). dom0 is also a Debian jessie running > > Xen 4.8. > > > > It only happens when the guest is in pv mode, it works fine with pvhvm. > > > > It also crashes with older 3.16 kernels and 4.0.2-1, but not with > > 4.2.1-1 (last 2 kernels from snapshot.debian.org). > > > > # uname -a > > 3.16.0-4-amd64 #1 SMP Debian 3.16.39-1+deb8u2 (2017-03-07) x86_64 GNU/Linux > > From the crash log: > > > [ 300.632389] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W > > 3.16.0-4-amd64 #1 Debian 3.16.39-1+deb8u2 > > This indicates there was an earlier WARNING message; what was that?
Thanks for the answer. I got this WARNING after I increased verbosity in the command line: [ 300.636063] ------------[ cut here ]------------ [ 300.636102] WARNING: CPU: 0 PID: 0 at /build/linux-GSgHvp/linux-3.16.39/arch/x86/kernel/cpu/mcheck/mce.c:1307 mce_timer_fn+0x132/0x140() [ 300.636116] Modules linked in: x86_pkg_temp_thermal thermal_sys intel_rapl coretemp crc32_pclmul evdev aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper pcspkr cryptd autofs4 ext4 crc16 mbcache jbd2 xen_netfront xen_blkfront crct10dif_pclmul crct10dif_common crc32c_intel [ 300.636167] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 3.16.0-4-amd64 #1 Debian 3.16.39-1+deb8u2 [ 300.636178] 0000000000000000 ffffffff81514c81 0000000000000000 0000000000000009 [ 300.636188] ffffffff81068867 ffff88003f80ca00 ffff88003f9eca00 0000000000000100 [ 300.636199] ffffffff81038a30 000000000000000f ffffffff81038b62 ffffffff81a66e00 [ 300.636211] Call Trace: [ 300.636216] <IRQ> [<ffffffff81514c81>] ? dump_stack+0x5d/0x78 [ 300.636242] [<ffffffff81068867>] ? warn_slowpath_common+0x77/0x90 [ 300.636250] [<ffffffff81038a30>] ? mce_cpu_restart+0x40/0x40 [ 300.636257] [<ffffffff81038b62>] ? mce_timer_fn+0x132/0x140 [ 300.636267] [<ffffffff81073ea1>] ? call_timer_fn+0x31/0x140 [ 300.636274] [<ffffffff81038a30>] ? mce_cpu_restart+0x40/0x40 [ 300.636284] [<ffffffff81075559>] ? run_timer_softirq+0x1e9/0x2f0 [ 300.636292] [<ffffffff8106d911>] ? __do_softirq+0xf1/0x2d0 [ 300.636299] [<ffffffff8106dd25>] ? irq_exit+0x95/0xa0 [ 300.636309] [<ffffffff8135cca5>] ? xen_evtchn_do_upcall+0x35/0x50 [ 300.636319] [<ffffffff8151cade>] ? xen_do_hypervisor_callback+0x1e/0x30 [ 300.636324] <EOI> [<ffffffff810013ac>] ? xen_hypercall_sched_op+0xc/0x20 [ 300.636339] [<ffffffff810013ac>] ? xen_hypercall_sched_op+0xc/0x20 [ 300.636349] [<ffffffff8100ad3c>] ? xen_safe_halt+0xc/0x20 [ 300.636360] [<ffffffff8101da69>] ? default_idle+0x19/0xd0 [ 300.636370] [<ffffffff810a9b74>] ? cpu_startup_entry+0x374/0x470 [ 300.636384] [<ffffffff81903076>] ? start_kernel+0x497/0x4a2 [ 300.636392] [<ffffffff81902a04>] ? set_init_arg+0x4e/0x4e [ 300.636400] [<ffffffff81904f91>] ? xen_start_kernel+0x569/0x573 [ 300.636413] ---[ end trace 7131ef713ca84161 ]--- Then, the same BUG as before. It always happens after 300 seconds. Vincent
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