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Date: Tue, 20 Dec 2022 12:03:11 +0100
From: Anders Roxell <anders.roxell@...aro.org>
To: "Michael S. Tsirkin" <mst@...hat.com>
Cc: Xuan Zhuo <xuanzhuo@...ux.alibaba.com>,
Naresh Kamboju <naresh.kamboju@...aro.org>,
Jason Wang <jasowang@...hat.com>,
Shaoqin Huang <shaoqin.huang@...el.com>,
Angus Chen <angus.chen@...uarmicro.com>,
Alex Bennée <alex.bennee@...aro.org>,
Arnd Bergmann <arnd@...db.de>,
open list <linux-kernel@...r.kernel.org>,
Linux-Next Mailing List <linux-next@...r.kernel.org>,
lkft-triage@...ts.linaro.org, regressions@...ts.linux.dev,
virtualization@...ts.linux-foundation.org, dmitry.fomichev@....com
Subject: Re: next: kernel BUG at drivers/virtio/virtio.c:122!
On Tue, 20 Dec 2022 at 11:54, Michael S. Tsirkin <mst@...hat.com> wrote:
>
> On Tue, Dec 20, 2022 at 06:27:59PM +0800, Xuan Zhuo wrote:
> > On Tue, 20 Dec 2022 14:51:54 +0530, Naresh Kamboju <naresh.kamboju@...aro.org> wrote:
> > > The qemu-x86_64 and qemu-arm64 boot failed with Linux next-20221220 tag.
> > > It is always reproducible with gcc-11/ gcc-12 and clang tool chains.
> > >
> > > Reported-by: Linux Kernel Functional Testing <lkft@...aro.org>
Thank you for the quick fix.
Tested-by: Anders Roxell <anders.roxell@...aro.org>
Cheers,
Anders
> > >
> > > <6>[ 0.000000] Booting Linux on physical CPU 0x0000000000 [0x000f0510]
> > > <5>[ 0.000000] Linux version 6.1.0-next-20221220 (tuxmake@...make)
> > > (Debian clang version 16.0.0
> > > (++20221218072110+9c1b82599dac-1~exp1~20221218072217.501), Debian LLD
> > > 16.0.0) #1 SMP PREEMPT @1671498176
> > > <5>[ 0.000000] random: crng init done
> > > <6>[ 0.000000] Machine model: linux,dummy-virt
> > > ....
> > > <6>[ 3.571098] loop: module loaded
> > > <6>[ 3.573410] virtio_blk virtio0: 1/0/0 default/read/poll queues
> > > <5>[ 3.578816] virtio_blk virtio0: [vda] 2816420 512-byte logical
> > > blocks (1.44 GB/1.34 GiB)
> > > <4>[ 3.581234] ------------[ cut here ]------------
> > > <2>[ 3.581595] kernel BUG at drivers/virtio/virtio.c:122!
> > > <0>[ 3.582906] Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
> > > <4>[ 3.583672] Modules linked in:
> > > <4>[ 3.584905] CPU: 0 PID: 1 Comm: swapper/0 Not tainted
> > > 6.1.0-next-20221220 #1
> > > <4>[ 3.585801] Hardware name: linux,dummy-virt (DT)
> > > <4>[ 3.586591] pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT
> > > -SSBS BTYPE=--)
> > > <4>[ 3.587349] pc : virtio_check_driver_offered_feature+0x60/0x6c
> > > <4>[ 3.588613] lr : virtblk_probe+0x7cc/0x8f0
> > > <4>[ 3.588915] sp : ffff80000802b840
> > > <4>[ 3.589314] x29: ffff80000802b850 x28: 0000000000000000 x27:
> > > 0000000000000001
> > > <4>[ 3.590509] x26: 0000000000000001 x25: 0000000000000200 x24:
> > > ffff0000c1699b00
> > > <4>[ 3.590832] x23: 00000000000000fe x22: ffff0000c0313c30 x21:
> > > ffff0000c0313c00
> > > <4>[ 3.591568] x20: ffff0000c02f4080 x19: 0000000000000000 x18:
> > > ffffffffffffffff
> > > <4>[ 3.592056] x17: 00000000ffffffea x16: 00000000fffffffe x15:
> > > 0000000000000004
> > > <4>[ 3.592632] x14: 0000000000000fff x13: ffff800008028000 x12:
> > > ffff80000802c000
> > > <4>[ 3.593157] x11: 000000000000000f x10: 000000000000000f x9 :
> > > ffffae66eee314d8
> > > <4>[ 3.594048] x8 : 0000000000000000 x7 : 3631383837352e33 x6 :
> > > 202020205b3e353c
> > > <4>[ 3.594429] x5 : 0000000000000001 x4 : 0000000000000000 x3 :
> > > ffff80000802b780
> > > <4>[ 3.594956] x2 : ffff80000802b6f8 x1 : 0000000000000011 x0 :
> > > ffff0000c02f4080
> > > <4>[ 3.595811] Call trace:
> > > <4>[ 3.596120] virtio_check_driver_offered_feature+0x60/0x6c
> > > <4>[ 3.596632] virtio_dev_probe+0x274/0x320
> > > <4>[ 3.597064] really_probe+0x178/0x418
> > > <4>[ 3.597547] __driver_probe_device+0x120/0x188
> > > <4>[ 3.597820] driver_probe_device+0x48/0x22c
> > > <4>[ 3.598189] __driver_attach+0xf8/0x250
> > > <4>[ 3.598656] bus_for_each_dev+0x8c/0xd8
> > > <4>[ 3.599151] driver_attach+0x30/0x3c
> > > <4>[ 3.599321] bus_add_driver+0x11c/0x22c
> > > <4>[ 3.599684] driver_register+0x84/0x120
> > > <4>[ 3.600175] register_virtio_driver+0x38/0x48
> > > <4>[ 3.600575] virtio_blk_init+0x6c/0xb4
> > > <4>[ 3.600759] do_one_initcall+0xe0/0x2f8
> > > <4>[ 3.601197] do_initcall_level+0xa8/0x150
> > > <4>[ 3.601703] do_initcalls+0x60/0xa0
> > > <4>[ 3.601892] do_basic_setup+0x28/0x34
> > > <4>[ 3.602229] kernel_init_freeable+0x100/0x178
> > > <4>[ 3.602706] kernel_init+0x2c/0x1b4
> > > <4>[ 3.603162] ret_from_fork+0x10/0x20
> > > <0>[ 3.604398] Code: 540000a0 91001129 f1000508 54ffff61 (d4210000)
> > > <4>[ 3.606108] ---[ end trace 0000000000000000 ]---
> > > <6>[ 3.606714] note: swapper/0[1] exited with preempt_count 1
> > > <0>[ 3.608155] Kernel panic - not syncing: Attempted to kill init!
> > > exitcode=0x0000000b
> > > <2>[ 3.609173] SMP: stopping secondary CPUs
> > > <0>[ 3.610506] Kernel Offset: 0x2e66e4800000 from 0xffff800008000000
> > > <0>[ 3.610970] PHYS_OFFSET: 0x40000000
> > > <0>[ 3.611428] CPU features: 0x00000,003a612f,cd22773f
> > > <0>[ 3.612277] Memory Limit: none
> > > <0>[ 3.613192] ---[ end Kernel panic - not syncing: Attempted to
> > > kill init! exitcode=0x0000000b ]---
> > >
> > > Ref Links,
> > > https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20221220/testrun/13764099/suite/log-parser-test/test/check-kernel-bug/details/
> > > https://qa-reports.linaro.org/lkft/linux-next-master/build/next-20221220/testrun/13766814/suite/boot/test/clang-nightly-lkftconfig/details/
> > > https://storage.tuxsuite.com/public/linaro/lkft/builds/2J9l3qxSBmPWVa1S2uWn0Xuwl1J/config
> > >
> >
> >
> > I think there is a bug, VIRTIO_BLK_F_ZONED depends the CONFIG_BLK_DEV_ZONE, but
> > checking its code in virtblk_probe does not depend on this config.
> >
> > This option in your config file is indeed not opened.
> >
> >
> > static int virtblk_probe(struct virtio_device *vdev){
> > .....
> > virtblk_update_capacity(vblk, false);
> > virtio_device_ready(vdev);
> >
> > if (virtio_has_feature(vdev, VIRTIO_BLK_F_ZONED)) {
> > err = virtblk_probe_zoned_device(vdev, vblk, q);
> > if (err)
> > goto out_cleanup_disk;
> > }
> >
> > dev_info(&vdev->dev, "blk config size: %zu\n",
> > sizeof(struct virtio_blk_config));
> >
> > ....
> >
> > static unsigned int features[] = {
> > VIRTIO_BLK_F_SEG_MAX, VIRTIO_BLK_F_SIZE_MAX, VIRTIO_BLK_F_GEOMETRY,
> > VIRTIO_BLK_F_RO, VIRTIO_BLK_F_BLK_SIZE,
> > VIRTIO_BLK_F_FLUSH, VIRTIO_BLK_F_TOPOLOGY, VIRTIO_BLK_F_CONFIG_WCE,
> > VIRTIO_BLK_F_MQ, VIRTIO_BLK_F_DISCARD, VIRTIO_BLK_F_WRITE_ZEROES,
> > VIRTIO_BLK_F_SECURE_ERASE, VIRTIO_BLK_F_LIFETIME,
> > #ifdef CONFIG_BLK_DEV_ZONED
> > VIRTIO_BLK_F_ZONED,
> > #endif /* CONFIG_BLK_DEV_ZONED */
> > }
> >
> >
> > Thanks.
>
> Oh you are right, I wanted to test it so of course I enabled it.
>
> Testing this fixup now:
>
> commit f9503d0fd839b59e0f48b00c20635437c41420ed
> Author: Michael S. Tsirkin <mst@...hat.com>
> Date: Tue Dec 20 05:53:41 2022 -0500
>
> fixup! virtio-blk: add support for zoned block devices
>
> diff --git a/drivers/block/virtio_blk.c b/drivers/block/virtio_blk.c
> index ff49052e26f7..d8cdaeb51d1c 100644
> --- a/drivers/block/virtio_blk.c
> +++ b/drivers/block/virtio_blk.c
> @@ -775,6 +775,10 @@ static int virtblk_probe_zoned_device(struct virtio_device *vdev,
> return ret;
> }
>
> +static inline bool virtblk_has_zoned_feature(struct virtio_device *vdev)
> +{
> + return virtio_has_feature(vdev, VIRTIO_BLK_F_ZONED);
> +}
> #else
>
> /*
> @@ -790,6 +794,11 @@ static inline int virtblk_probe_zoned_device(struct virtio_device *vdev,
> {
> return -EOPNOTSUPP;
> }
> +
> +static inline bool virtblk_has_zoned_feature(struct virtio_device *vdev)
> +{
> + return false;
> +}
> #endif /* CONFIG_BLK_DEV_ZONED */
>
> /* return id (s/n) string for *disk to *id_str
> @@ -1576,11 +1585,11 @@ static int virtblk_probe(struct virtio_device *vdev)
> else
> q->limits.discard_granularity = blk_size;
> }
>
> virtblk_update_capacity(vblk, false);
> virtio_device_ready(vdev);
>
> - if (virtio_has_feature(vdev, VIRTIO_BLK_F_ZONED)) {
> + if (virtblk_has_zoned_feature(vdev)) {
> err = virtblk_probe_zoned_device(vdev, vblk, q);
> if (err)
> goto out_cleanup_disk;
> --
> MST
>
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