Comment 40 for bug 1742675

Attached is a transcription of the latest kernel boot panic.

This is the Oops:

[ 2.620000] BUG: unable to handle kernel NULL pointer dereference at (null)
[ 2.620000] IP: __bitmap_intersects+0x10/0x70
[ 2.620000] PGD 0
[ 2.620000] P4D 0
[ 2.620000]
[ 2.620000] Oops: 0000 [#1] SMP PTI
[ 2.620000] Modules linked in:
[ 2.620000] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.13.0-45-generic #50~16.04.1-Ubuntu
[ 2.620000] Hardware name: Dell Inc. Precision WorkStation T5500 /0CRH6C, BIOS A16 05/28/2013
[ 2.620000] task: ffff989914e81600 task.stack: ffffb038c313800
[ 2.620000] RIP: 0010:__bitmap_intersects+0x10/0x70
[ 2.620000] RSP: 0000:ffffb038c313bb00 EFLAGS: 00010002
[ 2.620000] RAX: 0000000000000282 RBX: ffff989923fcb2c0 RCX: ffff989914e70780
[ 2.620000] RDX: 0000000000000040 RSI: ffffffff994603e0 RDI: 0000000000000000
[ 2.620000] RBP: ffffb038c313bb00 R08: ffff989916919000 R09: ffff989916406460
[ 2.620000] R10: 0000000000000001 R11: 0000000000000040 R12: 0000000000000000
[ 2.620000] R13: ffffb038c313bd88 R14: ffff989916906c60 R15: ffff989916906c60
[ 2.620000] FS: 0000000000000000(0000) GS:ffff989916e00000(0000) knlGS:0000000000000000
[ 2.620000] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 2.620000] CR2: 0000000000000000 CR3: 000000016240a001 CR4: 00000000000206f0
[ 2.620000] Call Trace:
[ 2.620000] assign_irq_vector+0x58/0x450
[ 2.620000] ? radix_tree_lookup+0xd/0x10
[ 2.620000] x86_vector_alloc_irqs+0x10e/0x1a0
[ 2.620000] irq_domain_alloc_irqs_parent+0x1f/0x30
[ 2.620000] intel_irq_remapping_alloc+0x79/0x7c0
[ 2.620000] ? __radix_tree_create+0x17a/0x1f0
[ 2.620000] irq_domain_alloc_irqs_parent+0x1f/0x30
[ 2.620000] mp_irqdomain_alloc+0xa0/0x2c0
[ 2.620000] __irq_domain_alloc_irqs+0x144/0x330
[ 2.620000] alloc_isa_irq_from_domain.isra.10+0xc4/0xe0
[ 2.620000] mp_map_pin_to_irq+0x195/0x2f0
[ 2.620000] pin_2_irq+0x47/0x80
[ 2.620000] setup_IO_APIC+0x101/0x1c4
[ 2.620000] apic_bsp_setup+0xb7/0xc8
[ 2.620000] native_smp_prepare_cpus+0x2bd/0x332
[ 2.620000] kernel_init_freeable+0xd2/0x23b
[ 2.620000] ? rest_init+0xc0/0xc0
[ 2.620000] kernel_init+0xe/0x101
[ 2.620000] ret_from_fork+0x35/0x40
[ 2.620000] Code: 04 d7 49 09 c1 31 c0 4d 85 c9 0f 95 c0 5d c3 45 31 c9 eb c8 0f 1f 80 00 00 00 00 41 89 d2 55 41 c1 ea 06 45 85 d2 48 89 e5 74 2b <48> 8b 07 48 85 06 75 4e 31 c0 45 31 c9 eb 13 4c 8b 44 07 08 4c
[ 2.620000] RIP: __bitmap_intersects+0x10/0x70 RSP: ffffb038c313bb00
[ 2.620000] CR2: 0000000000000000
[ 2.620000] ---[ end trace 1dc91a86fe1886bb ]---
[ 2.620000] Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009
[ 2.620000]
[ 2.620000] --[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009
[ 2.620000]