From: Greg KH <greg@kroah.com>
To: Ming Lei <ming.lei@redhat.com>
Cc: Yi Zhang <yi.zhang@redhat.com>,
linux-block <linux-block@vger.kernel.org>,
stable@vger.kernel.org
Subject: Re: [bug report] NULL pointer at blk_mq_put_rq_ref+0x20/0xb4 observed with blktests on 5.13.15
Date: Thu, 9 Sep 2021 12:07:32 +0200 [thread overview]
Message-ID: <YTnc5Ja/DKR30Euy@kroah.com> (raw)
In-Reply-To: <CAFj5m9J4sxRwQb7+nHzYOurX9QRpEgsEMCqdx4SHA4THnsJXBA@mail.gmail.com>
On Thu, Sep 09, 2021 at 05:14:18PM +0800, Ming Lei wrote:
> On Thu, Sep 9, 2021 at 4:47 PM Yi Zhang <yi.zhang@redhat.com> wrote:
> >
> > Hello
> >
> > I found this issue with blktests on[1], did we miss some patch on stable?
> > [1]
> > https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
> > queue/5.13
> >
> > [ 68.989907] run blktests block/006 at 2021-09-09 04:34:35
> > [ 69.085724] null_blk: module loaded
> > [ 74.271624] Unable to handle kernel NULL pointer dereference at
> > virtual address 00000000000002b8
> > [ 74.280414] Mem abort info:
> > [ 74.283195] ESR = 0x96000004
> > [ 74.286245] EC = 0x25: DABT (current EL), IL = 32 bits
> > [ 74.291545] SET = 0, FnV = 0
> > [ 74.294587] EA = 0, S1PTW = 0
> > [ 74.297720] Data abort info:
> > [ 74.300588] ISV = 0, ISS = 0x00000004
> > [ 74.304411] CM = 0, WnR = 0
> > [ 74.307368] user pgtable: 4k pages, 48-bit VAs, pgdp=000008004366e000
> > [ 74.313796] [00000000000002b8] pgd=0000000000000000, p4d=0000000000000000
> > [ 74.320577] Internal error: Oops: 96000004 [#1] SMP
> > [ 74.325443] Modules linked in: null_blk mlx5_ib ib_uverbs ib_core
> > rfkill sunrpc vfat fat joydev acpi_ipmi ipmi_ssif cdc_ether usbnet mii
> > mlx5_core psample ipmi_devintf mlxfw tls ipmi_msghandler arm_cmn
> > cppc_cpufreq arm_dsu_pmu acpi_tad fuse zram ip_tables xfs ast
> > i2c_algo_bit drm_vram_helper drm_kms_helper crct10dif_ce syscopyarea
> > ghash_ce sysfillrect uas sysimgblt sbsa_gwdt fb_sys_fops cec
> > drm_ttm_helper ttm nvme usb_storage nvme_core drm xgene_hwmon
> > aes_neon_bs
> > [ 74.366458] CPU: 31 PID: 2511 Comm: fio Not tainted 5.13.15+ #1
>
> Looks the fixes haven't land on linux-5.13.y:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=a9ed27a764156929efe714033edb3e9023c5f321
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=c2da19ed50554ce52ecbad3655c98371fe58599f
Now queued up. Someone could have told us they were needed :)
thanks,
greg k-h
next prev parent reply other threads:[~2021-09-09 10:07 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-09 8:47 [bug report] NULL pointer at blk_mq_put_rq_ref+0x20/0xb4 observed with blktests on 5.13.15 Yi Zhang
2021-09-09 9:14 ` Ming Lei
2021-09-09 10:07 ` Greg KH [this message]
2021-09-10 1:43 ` Ming Lei
2021-09-10 6:50 ` Greg KH
2021-09-15 10:35 ` Jack Wang
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