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Date: Thu, 28 Jan 2016 18:47:49 +0100
From: Jesper Dangaard Brouer <brouer@...hat.com>
To: kernel test robot <fengguang.wu@...el.com>
Cc: LKP <lkp@...org>, linux-kernel@...r.kernel.org, linux-mm@...ck.org,
Andrew Morton <akpm@...ux-foundation.org>, wfg@...ux.intel.com,
brouer@...hat.com
Subject: Re: [slab] a1fd55538c: WARNING: CPU: 0 PID: 0 at
kernel/locking/lockdep.c:2601 trace_hardirqs_on_caller()
Hi,
I cannot reproduce below problem... have enabled all kind of debugging
and also lockdep.
Can I get a version of the .config file used?
--Jesper
On Thu, 28 Jan 2016 22:52:55 +0800 kernel test robot <fengguang.wu@...el.com> wrote:
> Greetings,
>
> 0day kernel testing robot got the below dmesg and the first bad commit is
>
> https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
>
> commit a1fd55538cae9f411059c9b067a3d48c41aa876b
> Author: Jesper Dangaard Brouer <brouer@...hat.com>
> AuthorDate: Thu Jan 28 09:47:16 2016 +1100
> Commit: Stephen Rothwell <sfr@...b.auug.org.au>
> CommitDate: Thu Jan 28 09:47:16 2016 +1100
>
> slab: use slab_pre_alloc_hook in SLAB allocator shared with SLUB
>
> Deduplicate code in SLAB allocator functions slab_alloc() and
> slab_alloc_node() by using the slab_pre_alloc_hook() call, which is now
> shared between SLUB and SLAB.
>
> Signed-off-by: Jesper Dangaard Brouer <brouer@...hat.com>
> Cc: Christoph Lameter <cl@...ux.com>
> Cc: Pekka Enberg <penberg@...nel.org>
> Cc: David Rientjes <rientjes@...gle.com>
> Cc: Joonsoo Kim <iamjoonsoo.kim@....com>
> Cc: Vladimir Davydov <vdavydov@...tuozzo.com>
> Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>
>
> +-----------------------------------------------------------------+------------+------------+---------------+
> | | 074b6f53c3 | a1fd55538c | next-20160128 |
> +-----------------------------------------------------------------+------------+------------+---------------+
> | boot_successes | 40 | 0 | 0 |
> | boot_failures | 52 | 26 | 19 |
> | Kernel_panic-not_syncing:Attempted_to_kill_init!exitcode= | 52 | 26 | 14 |
> | WARNING:at_kernel/locking/lockdep.c:#trace_hardirqs_on_caller() | 0 | 26 | 19 |
> | backtrace:pcpu_mem_zalloc | 0 | 26 | 19 |
> | backtrace:percpu_init_late | 0 | 26 | 19 |
> | IP-Config:Auto-configuration_of_network_failed | 0 | 0 | 2 |
> +-----------------------------------------------------------------+------------+------------+---------------+
>
> [ 0.000000] Inode-cache hash table entries: 16384 (order: 5, 131072 bytes)
> [ 0.000000] Memory: 194224K/261624K available (10816K kernel code, 5060K rwdata, 6628K rodata, 988K init, 33076K bss, 67400K reserved, 0K cma-reserved)
> [ 0.000000] ------------[ cut here ]------------
> [ 0.000000] WARNING: CPU: 0 PID: 0 at kernel/locking/lockdep.c:2601 trace_hardirqs_on_caller+0x341/0x380()
> [ 0.000000] DEBUG_LOCKS_WARN_ON(unlikely(early_boot_irqs_disabled))
> [ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 4.5.0-rc1-00069-ga1fd555 #1
> [ 0.000000] ffffffff82403dd8 ffffffff82403d90 ffffffff813b937d ffffffff82403dc8
> [ 0.000000] ffffffff810eb4d3 ffffffff812617cc 0000000000000001 ffff88000fcc50a8
> [ 0.000000] ffff8800000984c0 00000000024000c0 ffffffff82403e28 ffffffff810eb5c7
> [ 0.000000] Call Trace:
> [ 0.000000] [<ffffffff813b937d>] dump_stack+0x27/0x3a
> [ 0.000000] [<ffffffff810eb4d3>] warn_slowpath_common+0xa3/0x100
> [ 0.000000] [<ffffffff812617cc>] ? cache_alloc_refill+0x7ac/0x910
> [ 0.000000] [<ffffffff810eb5c7>] warn_slowpath_fmt+0x57/0x70
> [ 0.000000] [<ffffffff81143e61>] trace_hardirqs_on_caller+0x341/0x380
> [ 0.000000] [<ffffffff81143ebd>] trace_hardirqs_on+0x1d/0x30
> [ 0.000000] [<ffffffff812617cc>] cache_alloc_refill+0x7ac/0x910
> [ 0.000000] [<ffffffff8121df6a>] ? pcpu_mem_zalloc+0x5a/0xc0
> [ 0.000000] [<ffffffff81261fce>] __kmalloc+0x24e/0x440
> [ 0.000000] [<ffffffff8121df6a>] pcpu_mem_zalloc+0x5a/0xc0
> [ 0.000000] [<ffffffff829213aa>] percpu_init_late+0x4d/0xbb
> [ 0.000000] [<ffffffff828f41c9>] start_kernel+0x30b/0x6e1
> [ 0.000000] [<ffffffff828f3120>] ? early_idt_handler_array+0x120/0x120
> [ 0.000000] [<ffffffff828f332f>] x86_64_start_reservations+0x46/0x4f
> [ 0.000000] [<ffffffff828f34d4>] x86_64_start_kernel+0x19c/0x1b2
> [ 0.000000] ---[ end trace cb88537fdc8fa200 ]---
> [ 0.000000] Running RCU self tests
>
> git bisect start 888c8375131656144c1605071eab2eb6ac49abc3 92e963f50fc74041b5e9e744c330dca48e04f08d --
> git bisect good f664e02a71d85691fc33f116bae3eb7f0debd194 # 17:19 17+ 13 Merge remote-tracking branch 'kbuild/for-next'
> git bisect good c7173552fb5efc15dd092d3a90b5d6ad0f3d9421 # 17:35 17+ 2 Merge remote-tracking branch 'audit/next'
> git bisect good bd605d2e3cc724606fa7c0fd3d5d90276f07e979 # 17:47 17+ 2 Merge remote-tracking branch 'extcon/extcon-next'
> git bisect good 108776431802ced1ca8ba38a9765ef81c48513de # 18:06 17+ 5 Merge remote-tracking branch 'llvmlinux/for-next'
> git bisect good 56f1389517d2470a8abdb661c97d6ef640ca8cf3 # 18:30 17+ 3 Merge remote-tracking branch 'coresight/next'
> git bisect bad 3cb196d8ee7f94b78c3d609bb91f5b175b3841d8 # 19:17 0- 8 Merge branch 'akpm-current/current'
> git bisect good 49d5623e2407b26b532ca24f49d778b5b6fedb22 # 19:48 22+ 0 Merge remote-tracking branch 'rtc/rtc-next'
> git bisect bad 8ccfb34d7450299714a9a590a764934397a818c6 # 20:06 0- 22 mm: filemap: avoid unnecessary calls to lock_page when waiting for IO to complete during a read
> git bisect good d9dc8f2de4f863bef9a303b2cbae0bbd1c9dfceb # 20:32 22+ 22 ocfs2: add feature document for online file check
> git bisect bad ebea6ceb9754b02bcab987af96c64782c665aa91 # 20:56 0- 18 mm/slab: remove object status buffer for DEBUG_SLAB_LEAK
> git bisect bad 24d88722c03b13ef63b3b631f81454a63ac26cc4 # 21:06 0- 22 mm: kmemcheck skip object if slab allocation failed
> git bisect good 1fc2d06fe0cfca10e571e2e444a4a37693495502 # 21:26 22+ 22 ocfs2/dlm: move lock to the tail of grant queue while doing in-place convert
> git bisect good 3355ee84b3d96c7c30923d0bba228b0b7aa380d2 # 21:33 21+ 8 slub: cleanup code for kmem cgroup support to kmem_cache_free_bulk
> git bisect good 074b6f53c320a81e975c0b5dd79daa5e78a711ba # 21:39 22+ 24 mm: fault-inject take over bootstrap kmem_cache check
> git bisect bad a1fd55538cae9f411059c9b067a3d48c41aa876b # 21:49 0- 26 slab: use slab_pre_alloc_hook in SLAB allocator shared with SLUB
> # first bad commit: [a1fd55538cae9f411059c9b067a3d48c41aa876b] slab: use slab_pre_alloc_hook in SLAB allocator shared with SLUB
> git bisect good 074b6f53c320a81e975c0b5dd79daa5e78a711ba # 21:53 66+ 52 mm: fault-inject take over bootstrap kmem_cache check
> # extra tests with DEBUG_INFO
> git bisect bad a1fd55538cae9f411059c9b067a3d48c41aa876b # 22:00 0- 36 slab: use slab_pre_alloc_hook in SLAB allocator shared with SLUB
> # extra tests on HEAD of linux-next/master
> git bisect bad 888c8375131656144c1605071eab2eb6ac49abc3 # 22:00 0- 19 Add linux-next specific files for 20160128
> # extra tests on tree/branch linux-next/master
> git bisect bad 888c8375131656144c1605071eab2eb6ac49abc3 # 22:00 0- 19 Add linux-next specific files for 20160128
> # extra tests with first bad commit reverted
> git bisect good fea4cd9180f321dd12ec9a7932a9bfb32bfaf4c4 # 22:32 66+ 30 Revert "slab: use slab_pre_alloc_hook in SLAB allocator shared with SLUB"
> # extra tests on tree/branch linus/master
> git bisect good 03c21cb775a313f1ff19be59c5d02df3e3526471 # 22:52 65+ 67 Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
> # extra tests on tree/branch linux-next/master
> git bisect bad 888c8375131656144c1605071eab2eb6ac49abc3 # 22:52 0- 19 Add linux-next specific files for 20160128
>
>
> This script may reproduce the error.
>
> ----------------------------------------------------------------------------
> #!/bin/bash
>
> kernel=$1
> initrd=yocto-minimal-x86_64.cgz
>
> wget --no-clobber https://github.com/fengguang/reproduce-kernel-bug/raw/master/initrd/$initrd
>
> kvm=(
> qemu-system-x86_64
> -enable-kvm
> -cpu Haswell,+smep,+smap
> -kernel $kernel
> -initrd $initrd
> -m 256
> -smp 1
> -device e1000,netdev=net0
> -netdev user,id=net0
> -boot order=nc
> -no-reboot
> -watchdog i6300esb
> -rtc base=localtime
> -serial stdio
> -display none
> -monitor null
> )
>
> append=(
> hung_task_panic=1
> earlyprintk=ttyS0,115200
> systemd.log_level=err
> debug
> apic=debug
> sysrq_always_enabled
> rcupdate.rcu_cpu_stall_timeout=100
> panic=-1
> softlockup_panic=1
> nmi_watchdog=panic
> oops=panic
> load_ramdisk=2
> prompt_ramdisk=0
> console=ttyS0,115200
> console=tty0
> vga=normal
> root=/dev/ram0
> rw
> drbd.minor_count=8
> )
>
> "${kvm[@]}" --append "${append[*]}"
> ----------------------------------------------------------------------------
>
> ---
> 0-DAY kernel test infrastructure Open Source Technology Center
> https://lists.01.org/pipermail/lkp Intel Corporation
--
Best regards,
Jesper Dangaard Brouer
MSc.CS, Principal Kernel Engineer at Red Hat
Author of http://www.iptv-analyzer.org
LinkedIn: http://www.linkedin.com/in/brouer
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