Hi,

I'm running Fedora 28 in a Xen DomU on a Debian Stretch Dom0. This used
to work fine but kernel 4.19.5 crashes on boot (see console output
below) - 4.19.4 and earlier don't show any problems.
Is anyone else seeing this? Is there a workaround?

Regards
  mks

Output of
# xl create /etc/xen/fedora.cfg -c
>  ┌────────────────────────────────────────────────────────────────────────┐
>  │ Fedora (4.19.5-200.fc28.x86_64) 28 (Twenty Eight)                      │
>  │ Fedora (4.19.4-200.fc28.x86_64) 28 (Twenty Eight)                      │
>  │ Fedora (4.19.3-200.fc28.x86_64) 28 (Twenty Eight)                      │
>  │ Fedora (0-rescue-ff8e39e06b0946d4b8aef0daeb33efb0) 28 (Twenty Eight)   │
>  │                                                                        │
>  │                                                                        │
>  │                                                                        │
>  │                                                                        │
>  └────────────────────────────────────────────────────────────────────────┘
>      Use the ^ and ┴ keys to select which entry is highlighted.
>      Press enter to boot the selected OS, 'e' to edit the
>      commands before booting, 'a' to modify the kernel arguments
>      before booting, or 'c' for a command line.
> 
> 
> 
> 
>      Will boot selected entry in  1 seconds
> 
> 
> [    1.919053] BUG: unable to handle kernel paging request at ffff88884b969000
> [    1.919061] PGD 220c067 P4D 220c067 PUD 0 
> [    1.919067] Oops: 0000 [#1] SMP NOPTI
> [    1.919072] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 
> 4.19.5-200.fc28.x86_64 #1
> [    1.919080] RIP: e030:ptdump_walk_pgd_level_core+0x21a/0x4f0
> [    1.919085] Code: b8 00 00 00 00 00 40 00 00 49 83 c7 08 49 01 c5 4c 3b 7c 
> 24 40 0f 84 c2 02 00 00 4c 89 e8 48 c1 f8 10 48 89 84 24 80 00 00 00 <49> 8b 
> 3f 48 f7 c7 9f ff ff ff 0f 85 22 ff ff ff 41 b8 03 00 00 00
> [    1.919094] RSP: e02b:ffffc90000717e68 EFLAGS: 00010286
> [    1.919099] RAX: ffff800000000000 RBX: ffffffff8191c029 RCX: 
> 0000000000000000
> [    1.919104] RDX: 0000000000000101 RSI: ffffffff8220a000 RDI: 
> 000000084b969067
> [    1.919109] RBP: 0000000000000000 R08: 0000000000000001 R09: 
> 0000000000000000
> [    1.919114] R10: 0000000000000000 R11: 0000000000000000 R12: 
> 0000000000000000
> [    1.919118] R13: 8000000000000000 R14: 0000000000000000 R15: 
> ffff88884b969000
> [    1.919128] FS:  0000000000000000(0000) GS:ffff88807d400000(0000) 
> knlGS:0000000000000000
> [    1.919133] CS:  e033 DS: 0000 ES: 0000 CR0: 0000000080050033
> [    1.919137] CR2: ffff88884b969000 CR3: 000000000220a000 CR4: 
> 0000000000042660
> [    1.919144] Call Trace:
> [    1.919151]  ? printk+0x58/0x6f
> [    1.919157]  ? rest_init+0xaa/0xaa
> [    1.919161]  kernel_init+0x31/0x107
> [    1.919166]  ret_from_fork+0x35/0x40
> [    1.919170] Modules linked in:
> [    1.919175] CR2: ffff88884b969000
> [    1.919179] ---[ end trace a85adfe208024c43 ]---
> [    1.919185] RIP: e030:ptdump_walk_pgd_level_core+0x21a/0x4f0
> [    1.919190] Code: b8 00 00 00 00 00 40 00 00 49 83 c7 08 49 01 c5 4c 3b 7c 
> 24 40 0f 84 c2 02 00 00 4c 89 e8 48 c1 f8 10 48 89 84 24 80 00 00 00 <49> 8b 
> 3f 48 f7 c7 9f ff ff ff 0f 85 22 ff ff ff 41 b8 03 00 00 00
> [    1.919199] RSP: e02b:ffffc90000717e68 EFLAGS: 00010286
> [    1.919204] RAX: ffff800000000000 RBX: ffffffff8191c029 RCX: 
> 0000000000000000
> [    1.919209] RDX: 0000000000000101 RSI: ffffffff8220a000 RDI: 
> 000000084b969067
> [    1.919214] RBP: 0000000000000000 R08: 0000000000000001 R09: 
> 0000000000000000
> [    1.919218] R10: 0000000000000000 R11: 0000000000000000 R12: 
> 0000000000000000
> [    1.919223] R13: 8000000000000000 R14: 0000000000000000 R15: 
> ffff88884b969000
> [    1.919231] FS:  0000000000000000(0000) GS:ffff88807d400000(0000) 
> knlGS:0000000000000000
> [    1.919237] CS:  e033 DS: 0000 ES: 0000 CR0: 0000000080050033
> [    1.919241] CR2: ffff88884b969000 CR3: 000000000220a000 CR4: 
> 0000000000042660
> [    1.919261] Kernel panic - not syncing: Attempted to kill init! 
> exitcode=0x00000009
> [    1.919261] 
> [    1.919269] Kernel Offset: disabled
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