linux-kernel - Re: stable-rc 5.4: libhugetlbfs fallocate_stress.sh: Unable to handle kernel paging request at virtual address ffff00006772f000

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Date:   Thu, 14 May 2020 08:40:39 +0200
From:   Michal Hocko <mhocko@...nel.org>
To:     Naresh Kamboju <naresh.kamboju@...aro.org>
Cc:     linux- stable <stable@...r.kernel.org>,
        open list <linux-kernel@...r.kernel.org>,
        linux-mm <linux-mm@...ck.org>, Hugh Dickins <hughd@...gle.com>,
        Naoya Horiguchi <n-horiguchi@...jp.nec.com>,
        "Aneesh Kumar K . V" <aneesh.kumar@...ux.vnet.ibm.com>,
        Andrea Arcangeli <aarcange@...hat.com>,
        "Kirill A . Shutemov" <kirill.shutemov@...ux.intel.com>,
        Davidlohr Bueso <dave@...olabs.net>,
        Prakash Sangappa <prakash.sangappa@...cle.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Mike Kravetz <mike.kravetz@...cle.com>,
        lkft-triage@...ts.linaro.org, Arnd Bergmann <arnd@...db.de>,
        John Stultz <john.stultz@...aro.org>
Subject: Re: stable-rc 5.4: libhugetlbfs fallocate_stress.sh: Unable to
 handle kernel paging request at virtual address ffff00006772f000

On Wed 13-05-20 23:11:40, Naresh Kamboju wrote:
> While running libhugetlbfs fallocate_stress.sh on stable-rc 5.4 branch kernel
> on arm64 hikey device. The following kernel Internal error: Oops:
> crash dump noticed.

Is the same problem reproducible on vanilla 5.4 without any stable
patches?

> 
> fallocate_stress.sh (2M: 64):
> [  129.706506] Unable to handle kernel paging request at virtual
> address ffff00006772f000
> [  129.714638] Mem abort info:
> [  129.717553]   ESR = 0x96000047
> [  129.720726]   EC = 0x25: DABT (current EL), IL = 32 bits
> [  129.726188]   SET = 0, FnV = 0
> [  129.729338]   EA = 0, S1PTW = 0
> [  129.732573] Data abort info:
> [  129.735546]   ISV = 0, ISS = 0x00000047
> [  129.739493]   CM = 0, WnR = 1
> [  129.742534] swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000000013ad000
> [  129.749409] [ffff00006772f000] pgd=0000000077ff7003,
> pud=0000000077e0d003, pmd=0000000077cd1003, pte=006800006772f713
> [  129.760294] Internal error: Oops: 96000047 [#1] PREEMPT SMP
> [  129.765988] Modules linked in: wl18xx wlcore mac80211 cfg80211
> hci_uart snd_soc_audio_graph_card adv7511 crct10dif_ce wlcore_sdio
> btbcm snd_soc_simple_card_utils cec kirin_drm bluetooth drm_kms_helper
> dw_drm_dsi rfkill drm fuse
> [  129.786626] CPU: 1 PID: 1263 Comm: fallocate_stres Not tainted
> 5.4.41-rc1-00091-g132220af41e6 #1
> [  129.795601] Hardware name: HiKey Development Board (DT)
> [  129.800940] pstate: 80000005 (Nzcv daif -PAN -UAO)
> [  129.805847] pc : clear_page+0x10/0x24
> [  129.809594] lr : __cpu_clear_user_page+0xc/0x18
> [  129.814225] sp : ffff800012a1bbe0
> [  129.817609] x29: ffff800012a1bbe0 x28: fffffe00017d8000
> [  129.823039] x27: ffff000073070268 x26: ffff800011adf000
> [  129.828466] x25: ffff800011ae06c8 x24: 0000000000001000
> [  129.833893] x23: 0000000000000000 x22: fffffe00017d8000
> [  129.839320] x21: 0000000000000000 x20: 0000000006a00000
> [  129.844747] x19: ffff000037945400 x18: 0000000000000000
> [  129.850174] x17: 0000000000000000 x16: 0000000000000000
> [  129.855602] x15: 0000000000000000 x14: 0000000000000000
> [  129.861031] x13: 0000000000000000 x12: 0000000000000000
> [  129.866458] x11: 0000000000000000 x10: ffff800012a1bbd0
> [  129.871886] x9 : 0000000000000200 x8 : 0ffff00000010000
> [  129.877314] x7 : 0000000000000000 x6 : 0000000000000080
> [  129.882741] x5 : 0000000000000036 x4 : 0000020000200000
> [  129.888170] x3 : 0000000000004bc0 x2 : 0000000000000004
> [  129.893597] x1 : 0000000000000040 x0 : ffff00006772f000
> [  129.899025] Call trace:
> [  129.901530]  clear_page+0x10/0x24
> [  129.904926]  clear_subpage+0x54/0x90
> [  129.908580]  clear_huge_page+0x6c/0x208
> [  129.912503]  hugetlbfs_fallocate+0x2e0/0x4a0
> [  129.916869]  vfs_fallocate+0x1b8/0x2e0
> [  129.920699]  ksys_fallocate+0x44/0x90
> [  129.924446]  __arm64_sys_fallocate+0x1c/0x28
> [  129.928811]  el0_svc_common.constprop.0+0x68/0x160
> [  129.933708]  el0_svc_handler+0x20/0x80
> [  129.937539]  el0_svc+0x8/0xc
> [  129.940488] Code: d53b00e1 12000c21 d2800082 9ac12041 (d50b7420)
> [  129.946719] ---[ end trace df98e92a449be749 ]---
> [  129.959274] note: fallocate_stres[1263] exited with preempt_count 1
> 
> ref:
> https://qa-reports.linaro.org/lkft/linux-stable-rc-5.4-oe/build/v5.4.40-91-g132220af41e6/testrun/1428986/log
> https://qa-reports.linaro.org/lkft/linux-stable-rc-5.4-oe/build/v5.4.40-91-g132220af41e6/testrun/1428986/
> 
> kernel config:
> https://builds.tuxbuild.com/SqvcoklXmvQsC70j6rfcgA/kernel.config
> 
> -- 
> Linaro LKFT
> https://lkft.linaro.org

-- 
Michal Hocko
SUSE Labs