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 Vincent
[ 300.632313] kernel BUG at /build/linux-GSgHvp/linux-3.16.39/kernel/timer.c:946! [ 300.632320] invalid opcode: 0000 [#1] SMP [ 300.632326] Modules linked in: fuse btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs vfat msdos fat jfs xfs libcrc32c crc32c_generic dm_mod x86_pkg_temp_thermal thermal_sys intel_rapl coretemp crc32_pclmul evdev aesni_intel aes_x86_64 lrw gf128mul glue_helper pcspkr ablk_helper cryptd autofs4 ext4 crc16 mbcache jbd2 crct10dif_pclmul crct10dif_common xen_netfront xen_blkfront crc32c_intel [ 300.632389] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W 3.16.0-4-amd64 #1 Debian 3.16.39-1+deb8u2 [ 300.632396] task: ffffffff8181a460 ti: ffffffff81800000 task.ti: ffffffff81800000 [ 300.632403] RIP: e030:[<ffffffff8107581a>] [<ffffffff8107581a>] add_timer_on+0xea/0x100 [ 300.632415] RSP: e02b:ffff88003f603e78 EFLAGS: 00010282 [ 300.632422] RAX: 0000000000000000 RBX: ffffffff81a66e00 RCX: 00000001000125c4 [ 300.632428] RDX: ffff88003f600000 RSI: 0000000000000000 RDI: ffff88003f60ca00 [ 300.632434] RBP: ffff88003f60ca00 R08: 000000010000009f R09: ffff88003f603de0 [ 300.632441] R10: ffff88003f603de4 R11: 00000000dfbfefff R12: ffffffff81a66e00 [ 300.632448] R13: ffffffff81038a30 R14: 0000000000000000 R15: 0000000000000000 [ 300.632462] FS: 0000000000000000(0000) GS:ffff88003f600000(0000) knlGS:ffff88003f600000 [ 300.632469] CS: e033 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 300.632476] CR2: 0000000001bf6808 CR3: 0000000000080000 CR4: 0000000000042660 [ 300.632483] Stack: [ 300.632487] ffffffff81a66e00 ffff88003f7eca00 0000000000000100 ffffffff81038a30 [ 300.632499] 000000000000000f 0000000000000000 ffffffff81073ea1 ffffffff81a66e00 [ 300.632509] ffff88003f7eca00 0000000000000001 ffffffff81038a30 000000000000000f [ 300.632521] Call Trace: [ 300.632525] <IRQ> [ 300.632530] [<ffffffff81038a30>] ? mce_cpu_restart+0x40/0x40 [ 300.632543] [<ffffffff81073ea1>] ? call_timer_fn+0x31/0x140 [ 300.632553] [<ffffffff81038a30>] ? mce_cpu_restart+0x40/0x40 [ 300.632563] [<ffffffff81075559>] ? run_timer_softirq+0x1e9/0x2f0 [ 300.632570] [<ffffffff8106d911>] ? __do_softirq+0xf1/0x2d0 [ 300.632577] [<ffffffff8106dd25>] ? irq_exit+0x95/0xa0 [ 300.632584] [<ffffffff8135cca5>] ? xen_evtchn_do_upcall+0x35/0x50 [ 300.632595] [<ffffffff8151cade>] ? xen_do_hypervisor_callback+0x1e/0x30 [ 300.632600] <EOI> [ 300.632603] [<ffffffff810013ac>] ? xen_hypercall_sched_op+0xc/0x20 [ 300.632614] [<ffffffff810013ac>] ? xen_hypercall_sched_op+0xc/0x20 [ 300.632623] [<ffffffff8100ad3c>] ? xen_safe_halt+0xc/0x20 [ 300.632631] [<ffffffff8101da69>] ? default_idle+0x19/0xd0 [ 300.632640] [<ffffffff810a9b74>] ? cpu_startup_entry+0x374/0x470 [ 300.632650] [<ffffffff81903076>] ? start_kernel+0x497/0x4a2 [ 300.632657] [<ffffffff81902a04>] ? set_init_arg+0x4e/0x4e [ 300.632665] [<ffffffff81904f91>] ? xen_start_kernel+0x569/0x573 [ 300.632674] Code: a6 85 00 48 85 db 74 21 48 8b 03 66 0f 1f 44 00 00 48 8b 7b 08 48 83 c3 10 4c 89 ea 48 89 ee ff d0 48 8b 03 48 85 c0 75 e8 eb 87 <0f> 0b 48 8b 74 24 30 e8 3a fe ff ff e9 3e ff ff ff 0f 1f 44 00 [ 300.632756] RIP [<ffffffff8107581a>] add_timer_on+0xea/0x100 [ 300.632766] RSP <ffff88003f603e78> [ 300.632779] ---[ end trace 77fe5db1be9d3b29 ]--- [ 300.632790] Kernel panic - not syncing: Fatal exception in interrupt [ 300.632803] Kernel Offset: 0x0 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffff9fffffff)
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