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Message-ID: <20140804145751.GA14134@localhost>
Date: Mon, 4 Aug 2014 22:57:51 +0800
From: Fengguang Wu <fengguang.wu@...el.com>
To: Artem Fetishev <Artem_Fetishev@...m.com>
Cc: Jet Chen <jet.chen@...el.com>, Su Tao <tao.su@...el.com>,
Yuanhan Liu <yuanhan.liu@...el.com>, LKP <lkp@...org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [x86] BUG: unable to handle kernel paging request at
ffff880012770000
Hi Artem,
On Mon, Aug 04, 2014 at 12:20:45PM +0000, Artem Fetishev wrote:
> Are we talking about error in rapl_pmu_init()? I ran your script on v3.14 and the error (in rapl_pmu_init) did not appear. Once again, for 3.14-rc8 the error does show up. My patch was merged between v3.14-rc8 and v3.14. The purpose of the patch was fixing that GPF in rapl_pmu_init. So I doubt the bisect is correct.
> +-----------------------------------------------------------+------------+------------+---------------+
> | | d9060742fb | 825600c0f2 | next-20140723 |
> +-----------------------------------------------------------+------------+------------+---------------+
> | boot_successes | 167 | 48 | 9 |
> | boot_failures | 97 | 18 | 2 |
> | BUG:unable_to_handle_kernel_NULL_pointer_dereference | 97 | 14 | 2 |
> | Oops | 97 | 3 | 2 |
> | RIP:rapl_pmu_init | 97 | | |
> | Kernel_panic-not_syncing:Attempted_to_kill_init_exitcode= | 97 | | |
> | backtrace:rapl_pmu_init | 97 | | |
The rapl_pmu_init bug is confirmed to be fixed judging from the above
3 lines.
> | backtrace:kernel_init_freeable | 97 | 3 | |
However the below BUGs are new in commit 825600c0f2:
> | BUG:unable_to_handle_kernel_paging_request | 0 | 17 | 2 |
> | BUG:unable_to_handle_kernel_NULL_pointer | 0 | 1 | |
> | RIP:slob_page_alloc | 0 | 3 | |
> | backtrace:proc_create_data | 0 | 3 | |
> | backtrace:init_timer_list_procfs | 0 | 3 | |
> | BUG:unable_to_handle | 0 | 1 | |
> | BUG:unable_to_handl | 0 | 1 | |
> | BUG:unable_to_handle_ker | 0 | 1 | |
> | BUG:kernel_boot_hang | 0 | 1 | |
> | RIP:memset | 0 | 0 | 2 |
> | RIP:__rmqueue | 0 | 0 | 2 |
> | backtrace:cryptomgr_test | 0 | 0 | 2 |
> | backtrace:do_fork | 0 | 0 | 2 |
> +-----------------------------------------------------------+------------+------------+---------------+
BUT I find cryptomgr_test showing up in the dmesg, which is very good
at producing all kinds of bug messages. So please ignore this bug
report -- it has too strong noises and may not be correct.
> [ 1.026545] cryptomgr_test (20) used greatest stack depth: 5632 bytes left
> [ 1.030491] AVX version of gcm_enc/dec engaged.
> [ 1.033812] alg: No test for __gcm-aes-aesni (__driver-gcm-aes-aesni)
> [ 1.038806] BUG: unable to handle kernel paging request at ffff880012770000
Thanks,
Fengguang
> [ 1.040058] IP: [<ffffffff8161d18f>] memset+0x1f/0xb0
> [ 1.040058] PGD 4170067 PUD 4171067 PMD 13bee067 PTE 8000000012770060
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] BUG: unable to handle kernel paging request at ffff880012776440
> [ 1.040058] IP: [<ffffffff810fb846>] match_held_lock+0x16/0x2f0
> [ 1.040058] PGD 4170067 PUD 4171067 PMD 13bee067 PTE 8000000012776060
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000068
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 0000000000000072
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
> [ 1.040058] IP: [<ffffffff820d66f6>] no_context+0x34e/0x3f4
> [ 1.040058] PGD 0
> [ 1.040058] BUG: unable to handle kernel NULL pointer dereference at 000000000000006a
>
> git bisect start v3.14 v3.13 --
> git bisect good 494479038d97f1b9f76fc633a360a681acdf035c # 20:32 66+ 28 Merge tag 'pinctrl-v3.14-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
> git bisect good 751a03c3728ed393287374078b98c3094a0b3bd2 # 20:36 66+ 67 Merge tag 'pm+acpi-3.14-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
> git bisect good 18f2af2d68815e1c4d5c275ebd030e27ef627582 # 20:43 66+ 55 Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
> git bisect good 708f04d2abf4e90abee61d9ffb1f165038017ecf # 20:46 66+ 58 block: free q->flush_rq in blk_init_allocated_queue error paths
> git bisect good 75c5a52da3fc2a06abb6c6192bdf5d680e56d37d # 20:48 66+ 31 vfs: Allocate anon_inode_inode in anon_inode_init()
> git bisect bad 0f2776e6151a123552fd06b666fe755fa780a967 # 20:48 0- 18 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client
> git bisect good 1fac1fa965a9fbdb38d8a4b945db3521f801c946 # 20:57 66+ 26 Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
> git bisect bad bc53267e97e4942e7f22c31cd8cf87840796accb # 21:01 1- 5 Merge branch 'akpm' (patches from Andrew Morton)
> git bisect good 2946369ee277fa9fcc3372aabddc9c15dfabf744 # 21:11 66+ 0 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
> git bisect bad 825600c0f20e595daaa7a6dd8970f84fa2a2ee57 # 21:30 0- 7 x86: fix boot on uniprocessor systems
> git bisect good d9060742fbf630fe31951dfc10b798deb2813f01 # 22:39 66+ 29 ocfs2: check if cluster name exists before deref
> # first bad commit: [825600c0f20e595daaa7a6dd8970f84fa2a2ee57] x86: fix boot on uniprocessor systems
> git bisect good d9060742fbf630fe31951dfc10b798deb2813f01 # 22:49 198+ 97 ocfs2: check if cluster name exists before deref
> git bisect bad 5eb00b037d9bb650b18b8f331bb9fb7a66559b5f # 22:51 0- 2 Add linux-next specific files for 20140723
> git bisect bad 82e13c71bc655b6dc7110da4e164079dadb44892 # 23:12 0- 77 Merge branch 'for-3.16' of git://linux-nfs.org/~bfields/linux
> git bisect bad 1a58d9909611972fd1c081bb04a9f7dc2571e612 # 23:23 2- 1 Add linux-next specific files for 20140724
>
>
> This script may reproduce the error.
>
> ----------------------------------------------------------------------------
> #!/bin/bash
>
> kernel=$1
> initrd=yocto-minimal-x86_64.cgz
>
> wget --no-clobber https://github.com/fengguang/reproduce-kernel-bug/blob/master/initrd/$initrd
>
> kvm=(
> qemu-system-x86_64
> -enable-kvm
> -cpu Haswell,+smep,+smap
> -kernel $kernel
> -initrd $initrd
> -m 320
> -smp 1
> -net nic,vlan=1,model=e1000
> -net user,vlan=1
> -boot order=nc
> -no-reboot
> -watchdog i6300esb
> -rtc base=localtime
> -serial stdio
> -display none
> -monitor null
> )
>
> append=(
> hung_task_panic=1
> earlyprintk=ttyS0,115200
> debug
> apic=debug
> sysrq_always_enabled
> rcupdate.rcu_cpu_stall_timeout=100
> panic=10
> softlockup_panic=1
> nmi_watchdog=panic
> prompt_ramdisk=0
> console=ttyS0,115200
> console=tty0
> vga=normal
> root=/dev/ram0
> rw
> drbd.minor_count=8
> )
>
> "${kvm[@]}" --append "${append[*]}"
> ----------------------------------------------------------------------------
>
> Thanks,
> Fengguang
--
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