[Xen-devel] [BUG] Xen 4.13 rc1 can not boot up with new Domain0 kernel(linux5.4.0-rc3)

["Zhang, JinwenX" <jinwenx.zhang@xxxxxxxxx>]

Bug detailed description:
----------------
Can not boot up xen with new Domain0 kernel(linux5.4.0-rc3) 

Environment :
----------------
HW: Cascade Lake server 
Xen: XEN 4.13.0rc1
Dom0: Linux 5.4.0-rc3

Reproduce steps:
----------------
1. install Xen and build Dom0 kernel(5.4.0-rc3) 
2. restart host server(can not boot up)

Current result:
----------------
Can not boot up host

Base error log:
----------------
Can not boot error log(clx_serial_log.txt).

Cascade Lake server first Call Trace information:
[   53.503425] watchdog: BUG: soft lockup - CPU#2 stuck for 22s! 
[migration/2:20]
[   53.503427] Modules linked in:
[   53.503468] CPU: 2 PID: 20 Comm: migration/2 Not tainted 5.4.0-rc2 #1
[   53.503470] Hardware name: Intel Corporation S2600WFD/S2600WFD, BIOS 
SE5C620.86B.0D.01.0395.022720191340 02/27/2019
[   53.503525] RIP: e030:stop_machine_yield+0x7/0x10
[   53.503528] Code: 24 58 65 48 33 0c 25 28 00 00 00 75 10 48 8d 65 f0 5b 41 
5c 5d c3 b8 fe ff ff ff eb e0 e8 21 6d f4 ff 90 0f 1f 44 00 00 f3 90 <c3> 0f 1f 
849
[   53.503530] RSP: e02b:ffffc9000867be68 EFLAGS: 00000246
[   53.503532] RAX: 0000000000000000 RBX: ffffc900084fbdac RCX: 0000000000000000
[   53.503535] RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffffffff821dfbe0
[   53.503537] RBP: 0000000000000001 R08: aaaaaaaaaaaaaaaa R09: 000000061bb23c32
[   53.503540] R10: 0000000000007ff0 R11: 00000000000003fe R12: ffffffff821dfbe0
[   53.503542] R13: ffffc900084fbd88 R14: 0000000000000000 R15: ffff88829189e400
[   53.503718] FS:  0000000000000000(0000) GS:ffff888291880000(0000) 
knlGS:0000000000000000
[   53.503721] CS:  e030 DS: 0000 ES: 0000 CR0: 0000000080050033
[   53.503723] CR2: 0000000000000000 CR3: 000000000200a000 CR4: 0000000000040660
[   53.503727] Call Trace:
[   53.503774]  multi_cpu_stop+0x51/0x110
[   53.503805]  ? stop_machine_yield+0x10/0x10
[   53.503809]  cpu_stopper_thread+0x47/0x100
[   53.503815]  ? sort_range+0x20/0x20
[   53.503819]  smpboot_thread_fn+0xc5/0x160
[   53.503825]  kthread+0x112/0x130
[   53.503830]  ? __kthread_parkme+0x70/0x70
[   53.503837]  ret_from_fork+0x35/0x40
[   53.504062] Modules linked in:

Best Regards,
Jinwen

Attachment: clx_serial_log.txt
Description: clx_serial_log.txt

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