linux-kernel - 4.15-rc6+ hang

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Date:   Thu, 4 Jan 2018 19:12:08 -0700
From:   Tom Hromatka <tom.hromatka@...cle.com>
To:     linux-kernel@...r.kernel.org
Cc:     Dhaval Giani <dhaval.giani@...cle.com>, gregkh@...uxfoundation.org,
        torvalds@...ux-foundation.org, peterz@...radead.org,
        mingo@...nel.org, tglx@...utronix.de
Subject: 4.15-rc6+ hang

I am seeing a hang running kernel 4.15-rc6+ on a vanilla VirtualBox VM.
(VirtualBox version 5.0.40)

I am running Linus' main git branch as of this commit, and my config is
attached.
     commit e1915c8195b38393005be9b74bfa6a3a367c83b3
     Merge: 00a5ae2 abb62c4
     Author: Linus Torvalds <torvalds@...ux-foundation.org>
     Date:   Thu Jan 4 11:14:36 2018 -0800

My kernel command line:
BOOT_IMAGE=/vmlinuz-4.15.0-rc6+ root=/dev/mapper/ol-root ro
     crashkernel=auto rd.lvm.lv=ol/root rd.lvm.lv=ol/swap
     LANG=en_US.UTF-8 console=tty0 console=ttyS0,115200n8

When I boot this kernel, it hangs and falls back into dracut. Here's
the boot log immediately prior to the hang:
[    8.195533] Segment Routing with IPv6
[    8.195545] NET: Registered protocol family 17
[    8.420746] sched_clock: Marking stable (8420621166, 
0)->(18132394441, -9711773275)
[    8.642271] input: ImExPS/2 Generic Explorer Mouse as 
/devices/platform/i8042/serio1/input/input4
[  OK  ] Reached target System Initialization.
[  OK  ] Started Show Plymouth Boot Screen.
[  OK  ] Reached target Paths.
[  OK  ] Reached target Basic System.
[  145.607869] dracut-initqueue[314]: Warning: dracut-initqueue timeout 
- starting timeout scripts
[  146.185075] dracut-initqueue[314]: Warning: dracut-initqueue timeout 
- starting timeout scripts

And here's a snippet from dmesg in dracut:
dracut:/# dmesg | less
[    0.000000] Linux version 4.15.0-rc6+ (kernel@...cleL460) (gcc 
version 5.4.0 20160609 (Ubuntu 5.4.0-68
[    0.000000] Command line: BOOT_IMAGE=/vmlinuz-4.15.0-rc6+ 
root=/dev/mapper/ol-root ro crashkernel=auo8
[    0.000000] ------------[ cut here ]------------
[    0.000000] XSAVE consistency problem, dumping leaves
[    0.000000] WARNING: CPU: 0 PID: 0 at 
arch/x86/kernel/fpu/xstate.c:614 fpu__init_system_xstate+0x374/b
[    0.000000] Modules linked in:
[    0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.15.0-rc6+ #10
[    0.000000] RIP: 0010:fpu__init_system_xstate+0x374/0x8bb
[    0.000000] RSP: 0000:ffffffff82003de0 EFLAGS: 00010086 ORIG_RAX: 
0000000000000000
[    0.000000] RAX: 0000000000000000 RBX: ffffffff82003e0c RCX: 
ffffffff82061868
[    0.000000] RDX: 0000000000000001 RSI: 0000000000000092 RDI: 
0000000000000002
[    0.000000] RBP: 000000000000000a R08: 657661656c20676e R09: 
0000000000000003
[    0.000000] R10: ffffffff8221dd00 R11: 69706d7564202c6d R12: 
0000000000000100
[    0.000000] R13: 0000000000000340 R14: 0000000000000440 R15: 
ffffffff82003e00
[    0.000000] FS:  0000000000000000(0000) GS:ffffffff8254f000(0000) 
knlGS:0000000000000000
[    0.000000] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[    0.000000] CR2: ffff8800000945a0 CR3: 00000000025e6000 CR4: 
00000000000406a0
[    0.000000] Call Trace:
[    0.000000]  ? fpu__init_system+0x224/0x27c
[    0.000000]  ? intel_detect_tlb+0x480/0x4b0
[    0.000000]  ? early_init_intel+0xe8/0x320
[    0.000000]  ? setup_arch+0xb7/0xc8d
[    0.000000]  ? setup_arch+0xb7/0xc8d
[    0.000000]  ? start_kernel+0x69/0x4a6
[    0.000000]  ? x86_family+0x5/0x20
[    0.000000]  ? load_ucode_bsp+0x118/0x134
[    0.000000]  ? secondary_startup_64+0xa5/0xb0
  3d 2e 97 aa ff 00 74 05 e8 7b 56 ab fe 48 8b 35 20 b2
x50 with crng_init=0
[    0.000000] ---[ end trace 6ecf7087f2750797 ]---


I scraped the screen and have attached the kernel's dmesg as well.

Thanks.

Tom



View attachment "dmesg" of type "text/plain" (45588 bytes)

View attachment "config-4.15-rc6+" of type "text/plain" (174732 bytes)