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Message-ID: <20170913072300.GA22742@yexl-desktop>
Date: Wed, 13 Sep 2017 15:23:00 +0800
From: kernel test robot <xiaolong.ye@...el.com>
To: David Howells <dhowells@...hat.com>
Cc: LKML <linux-kernel@...r.kernel.org>,
David Howells <dhowells@...hat.com>, lkp@...org
Subject: [lkp-robot] [hugetlbfs] a2c595105f:
BUG_hugetlbfs_inode_cache(Not_tainted):Objects_remaining_in_hugetlbfs_inode_cache_on__kmem_cache_shutdown()
FYI, we noticed the following commit:
commit: a2c595105f94f0db0b19f5ce47de7afb1abecae6 ("hugetlbfs: Convert to fs_context")
https://git.kernel.org/cgit/linux/kernel/git/dhowells/linux-fs.git mount-context
in testcase: trinity
with following parameters:
runtime: 300s
test-description: Trinity is a linux system call fuzz tester.
test-url: http://codemonkey.org.uk/projects/trinity/
on test machine: qemu-system-x86_64 -enable-kvm -smp 2 -m 512M
caused below changes (please refer to attached dmesg/kmsg for entire log/backtrace):
+-------------------------------------------------------------------------------------------------------------+------------+------------+
| | 89e689f267 | a2c595105f |
+-------------------------------------------------------------------------------------------------------------+------------+------------+
| boot_successes | 0 | 0 |
| boot_failures | 23 | 14 |
| BUG:stack_guard_page_was_hit_at#(stack_is#..#) | 23 | |
| Kernel_panic-not_syncing:Fatal_exception | 23 | |
| BUG_hugetlbfs_inode_cache(Not_tainted):Objects_remaining_in_hugetlbfs_inode_cache_on__kmem_cache_shutdown() | 0 | 14 |
| INFO:Slab#objects=#used=#fp=#flags= | 0 | 14 |
| INFO:Object#@...set= | 0 | 14 |
+-------------------------------------------------------------------------------------------------------------+------------+------------+
[ 0.236004] hpet0: 3 comparators, 64-bit 100.000000 MHz counter
[ 0.241031] clocksource: Switched to clocksource kvm-clock
[ 0.270032] VFS: Disk quotas dquot_6.6.0
[ 0.271542] VFS: Dquot-cache hash table entries: 512 (order 0, 4096 bytes)
[ 0.273625] =============================================================================
[ 0.274561] BUG hugetlbfs_inode_cache (Not tainted): Objects remaining in hugetlbfs_inode_cache on __kmem_cache_shutdown()
[ 0.274561] -----------------------------------------------------------------------------
[ 0.274561]
[ 0.274561] Disabling lock debugging due to kernel taint
[ 0.274561] INFO: Slab 0xffffea0000415480 objects=13 used=1 fp=0xffff880010553ce0 flags=0xfffffc0008100
[ 0.274561] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G B 4.13.0-rc1-00021-ga2c5951 #1
[ 0.274561] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 0.274561] Call Trace:
[ 0.274561] dump_stack+0x63/0x86
[ 0.274561] slab_err+0x9e/0xb0
[ 0.274561] ? free_cpumask_var+0x9/0x10
[ 0.274561] ? on_each_cpu_cond+0xc4/0x170
[ 0.274561] ? __kmalloc+0x1cd/0x200
[ 0.274561] __kmem_cache_shutdown+0x1b7/0x3d0
[ 0.274561] shutdown_cache+0x20/0x1c0
[ 0.274561] kmem_cache_destroy+0x1ce/0x200
[ 0.274561] init_hugetlbfs_fs+0x92/0x163
[ 0.274561] ? init_ramfs_fs+0x25/0x25
[ 0.274561] ? set_debug_rodata+0x17/0x17
[ 0.274561] do_one_initcall+0x43/0x170
[ 0.274561] ? set_debug_rodata+0x17/0x17
[ 0.274561] kernel_init_freeable+0x198/0x220
[ 0.274561] ? rest_init+0xe0/0xe0
[ 0.274561] kernel_init+0xe/0x101
[ 0.274561] ret_from_fork+0x25/0x30
[ 0.274561] INFO: Object 0xffff880010552000 @offset=0
[ 0.320432] kmem_cache_destroy hugetlbfs_inode_cache: Slab cache still has objects
[ 0.323278] CPU: 0 PID: 1 Comm: swapper/0 Tainted: G B 4.13.0-rc1-00021-ga2c5951 #1
[ 0.324269] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.9.3-20161025_171302-gandalf 04/01/2014
[ 0.324269] Call Trace:
[ 0.324269] dump_stack+0x63/0x86
[ 0.324269] kmem_cache_destroy+0x1ec/0x200
[ 0.324269] init_hugetlbfs_fs+0x92/0x163
[ 0.324269] ? init_ramfs_fs+0x25/0x25
[ 0.324269] ? set_debug_rodata+0x17/0x17
[ 0.324269] do_one_initcall+0x43/0x170
[ 0.324269] ? set_debug_rodata+0x17/0x17
[ 0.324269] kernel_init_freeable+0x198/0x220
[ 0.324269] ? rest_init+0xe0/0xe0
[ 0.324269] kernel_init+0xe/0x101
[ 0.324269] ret_from_fork+0x25/0x30
[ 0.346020] pnp: PnP ACPI init
[ 0.347410] pnp 00:00: Plug and Play ACPI device, IDs PNP0b00 (active)
[ 0.349348] pnp 00:01: Plug and Play ACPI device, IDs PNP0303 (active)
[ 0.351372] pnp 00:02: Plug and Play ACPI device, IDs PNP0f13 (active)
[ 0.353293] pnp 00:03: [dma 2]
To reproduce:
git clone https://github.com/intel/lkp-tests.git
cd lkp-tests
bin/lkp qemu -k <bzImage> job-script # job-script is attached in this email
Thanks,
Xiaolong
View attachment "config-4.13.0-rc1-00021-ga2c5951" of type "text/plain" (160954 bytes)
Download attachment "dmesg.xz" of type "application/x-xz" (10928 bytes)
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