linux-kernel - [linux-next:master] [fs] 51a146e059: BUG:kernel_hang_in_boot

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Message-ID: <202512230315.1717476b-lkp@intel.com>
Date: Tue, 23 Dec 2025 10:36:19 +0800
From: kernel test robot <oliver.sang@...el.com>
To: Eric Sandeen <sandeen@...hat.com>
CC: <oe-lkp@...ts.linux.dev>, <lkp@...el.com>, Christian Brauner
	<brauner@...nel.org>, <linux-fsdevel@...r.kernel.org>,
	<linux-doc@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<oliver.sang@...el.com>
Subject: [linux-next:master] [fs]  51a146e059: BUG:kernel_hang_in_boot_stage



Hello,


we don't have enough knowledge to analyze the connection between the issue and
this change. just observed the issue is quite persistent on 51a146e059 and
clean on its parent.


=========================================================================================
tbox_group/testcase/rootfs/kconfig/compiler/sleep:
  vm-snb-i386/boot/debian-11.1-i386-20220923.cgz/i386-randconfig-2006-20250804/gcc-14/1

d5bc4e31f2a3f301 51a146e0595c638c58097a1660f
---------------- ---------------------------
       fail:runs  %reproduction    fail:runs
           |             |             |
           :200        100%         200:200   last_state.booting
           :200        100%         200:200   last_state.is_incomplete_run
           :200        100%         200:200   dmesg.BUG:kernel_hang_in_boot_stage


we cannot spot out useful information from dmesg which is uploaded to [1]. also
attached one dmesg from parent commit (d5bc4e31f2) FYI.


kernel test robot noticed "BUG:kernel_hang_in_boot_stage" on:

commit: 51a146e0595c638c58097a1660ff6b6e7d3b72f3 ("fs: Remove internal old mount API code")
https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master

[test failed on linux-next/master cc3aa43b44bdb43dfbac0fcb51c56594a11338a8]

in testcase: boot

config: i386-randconfig-2006-20250804
compiler: gcc-14
test machine: qemu-system-i386 -enable-kvm -cpu SandyBridge -smp 2 -m 4G

(please refer to attached dmesg/kmsg for entire log/backtrace)



If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <oliver.sang@...el.com>
| Closes: https://lore.kernel.org/oe-lkp/202512230315.1717476b-lkp@intel.com


[   15.178608][    T1] signal: max sigframe size: 1760
[   15.669386][    T1] rcu: Hierarchical SRCU implementation.
[   15.785114][    T1] rcu: 	Max phase no-delay instances is 1000.
[  104.130757][    C0] workqueue: round-robin CPU selection forced, expect performance impact
[  110.182304][    C0] random: crng init done
BUG: kernel hang in boot stage



The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20251223/202512230315.1717476b-lkp@intel.com [1]



-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki


Download attachment "dmesg-d5bc4e31f2.xz" of type "application/x-xz" (11712 bytes)