Using the Ubuntu 18.04.1 LTS default kernel 4.15.0-32-generic system hangs/stalls during boot displaying the error shown below, kernels 4.13 and 4.17 don't show this bug. This seem to be an extended APIC issue in the kernel on certain xeon skylake models and was already patched, see https://lkml.org/lkml/2018/5/1/422 in effect disabling extended APIC in the bios allows to boot.
[ 3528.284002] watchdog: BUG: soft lockup - CPU#12 stuck for 22s! [swapper/0:1]
[ 3528.292000] Modules linked in:
[ 3528.292002] CPU: 12 PID: 1 Comm: swapper/0 Tainted: G L 4.15.0-24-generic #26-Ubuntu
[ 3528.304000] Hardware name: Supermicro SYS-1019P-WTR-01-ME028/X11SPW-TF, BIOS 2.0a 12/06/2017
[ 3528.312000] RIP: 0010:smp_call_function_many+0x229/0x250
[ 3528.316002] RSP: 0000:ffffa89c000cfa00 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff11
[ 3528.324002] RAX: 0000000000000004 RBX: ffff9552209238c0 RCX: 0000000000000001
[ 3528.332000] RDX: ffff955220728c80 RSI: 0000000000000000 RDI: ffff955220041a20
[ 3528.336001] RBP: ffffa89c000cfa38 R08: fffffffffffffffe R09: 0000000000000ff1
[ 3528.344000] R10: ffffe0161f62ee00 R11: 0000000000000000 R12: 0000000000000010
[ 3528.352001] R13: 0000000000023880 R14: ffffffff95c46cb0 R15: ffff955220004c00
[ 3528.360000] FS: 0000000000000000(0000) GS:ffff955220900000(0000) knlGS:0000000000000000
[ 3528.368001] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 3528.372002] CR2: 0000000000000000 CR3: 000000131020a001 CR4: 00000000007606e0
[ 3528.380002] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 3528.388002] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 3528.396000] PKRU: 00000000
[ 3528.396002] Call Trace:
[ 3528.400001] ? slub_cpu_dead+0xc0/0xc0
[ 3528.404002] on_each_cpu_mask+0x28/0x60
[ 3528.408000] ? ksm_migrate_page+0x60/0x60
[ 3528.412000] on_each_cpu_cond+0xb1/0x140
[ 3528.416000] ? slub_cpu_dead+0xc0/0xc0
[ 3528.420000] ? acpi_sleep_proc_init+0x2a/0x2a
[ 3528.424000] ? set_debug_rodata+0x17/0x17
[ 3528.428002] __kmem_cache_shrink+0x5f/0x2d0
[ 3528.432001] ? acpi_ns_check_object_type+0xed/0x1cc
[ 3528.436002] ? acpi_ut_trace+0x26/0x66
[ 3528.440000] ? acpi_ut_trace_ptr+0x2c/0x74
[ 3528.444002] ? acpi_os_release_object+0xe/0x20
[ 3528.448001] ? acpi_ut_delete_object_desc+0x9f/0xa2
[ 3528.452002] ? acpi_ut_update_ref_count.part.1+0x4ed/0x6e1
[ 3528.460000] ? acpi_ut_update_object_reference+0x185/0x20e
[ 3528.464001] ? __slab_free+0x14d/0x2c0
[ 3528.468002] ? __slab_free+0x14d/0x2c0
[ 3528.472000] ? acpi_ns_walk_namespace+0x238/0x278
[ 3528.476002] ? acpi_ns_initialize_devices+0x25b/0x338
[ 3528.480002] ? set_debug_rodata+0x17/0x17
[ 3528.484002] ? kfree+0x165/0x180
[ 3528.488000] ? kfree+0x165/0x180
[ 3528.492002] ? acpi_sleep_proc_init+0x2a/0x2a
[ 3528.496001] ? set_debug_rodata+0x17/0x17
[ 3528.500002] kmem_cache_shrink+0x1f/0x30
[ 3528.504000] ? kmem_cache_shrink+0x1f/0x30
[ 3528.508002] acpi_os_purge_cache+0xe/0x20
[ 3528.512001] acpi_purge_cached_objects+0x32/0x7a
[ 3528.516002] acpi_initialize_objects+0xa4/0xd5
[ 3528.520000] acpi_init+0xda/0x35e
[ 3528.524002] ? dmi_add_platform_ipmi+0x3ec/0x3ec
[ 3528.528001] ? dmi_add_platform_ipmi+0x3ec/0x3ec
[ 3528.536000] do_one_initcall+0x52/0x19f
[ 3528.540000] kernel_init_freeable+0x1af/0x251
[ 3528.544000] ? rest_init+0xb0/0xb0
[ 3528.544001] kernel_init+0xe/0x110
[ 3528.548002] ret_from_fork+0x35/0x40
[ 3528.552000] Code: 89 c7 e8 4b 39 85 00 3b 05 19 dc 53 01 0f 83 5c fe ff ff 48 63 c8 48 8b 13 48 03 14 cd 40 74 ba 96 8b 4a 18 83 e1 01 74 0a f3 90 <8b> 4a 18 83 e1 01 75 f6 eb c7 48 c7 c2 60 d6 05 97 4c 89 e6 89
This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1788616
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.