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From: Qu Wenruo <quwenruo.btrfs@gmx.com>
To: Anand Jain <anand.jain@oracle.com>, Qu Wenruo <wqu@suse.com>,
	linux-btrfs@vger.kernel.org
Subject: Re: [bug report] Unable to handle kernel paging request
Date: Tue, 2 Feb 2021 18:23:45 +0800	[thread overview]
Message-ID: <d55afd47-189f-e0a6-5577-0e89dab9e37d@gmx.com> (raw)
In-Reply-To: <5afbf08b-a93d-5633-8212-0e540625594a@oracle.com>



On 2021/2/2 下午5:21, Anand Jain wrote:
>
> Qu,
>
>   fstests ran fine on an aarch64 kvm with this patch set.

Do you mean subpage patchset?

With 4K sector size?

No way it can run fine...
Long enough fsstress can crash the kernel with btrfs_csum_one_bio()
unable to locate the corresponding ordered extent.


>
>   Further, I was running few hand tests as below, and it fails
>   with - Unable to handle kernel paging.
>
>   Test case looks something like..
>
>   On x86_64 create btrfs on a file 11g
>   copy /usr into /test-mnt stops at enospc
>   set compression property on the root sunvol
>   run defrag with -czstd

I don't even consider compression a supported feature for subpage.

Are you really talking about the subpage patchset with 4K sector size,
on 64K page size AArch64?

If really so, I appreciate your effort on testing very much, it means
the patchset is doing way better than it is.
But I don't really believe it's even true to pass fstests....

Thanks,
Qu

>   truncate a large file 4gb
>   punch holes on it
>   truncate couple of smaller files
>   unmount
>   send file to an aarch64 (64k pagesize) kvm
>   mount -o ro
>   run sha256sum on all the files
>
> ---------------------
> [37012.027764] BTRFS warning (device loop0): csum failed root 5 ino 611
> off 228659200 csum 0x1dcefc2d expected csum 0x69412d2a mirror 1
> [37012.030971] BTRFS error (device loop0): bdev /dev/loop0 errs: wr 0,
> rd 0, flush 0, corrupt 9, gen 0
> [37012.036223] BTRFS warning (device loop0): csum failed root 5 ino 616
> off 228724736 csum 0x73f63661 expected csum 0xaf922a6f mirror 1
> [37012.036250] BTRFS error (device loop0): bdev /dev/loop0 errs: wr 0,
> rd 0, flush 0, corrupt 10, gen 0
> [37012.123917] Unable to handle kernel paging request at virtual address
> 0061d1f66c080000
> [37012.126104] Mem abort info:
> [37012.126951]   ESR = 0x96000004
> [37012.127791]   EC = 0x25: DABT (current EL), IL = 32 bits
> [37012.129207]   SET = 0, FnV = 0
> [37012.130043]   EA = 0, S1PTW = 0
> [37012.131269] Data abort info:
> [37012.132165]   ISV = 0, ISS = 0x00000004
> [37012.133211]   CM = 0, WnR = 0
> [37012.134014] [0061d1f66c080000] address between user and kernel
> address ranges
> [37012.136050] Internal error: Oops: 96000004 [#1] PREEMPT SMP
> [37012.137567] Modules linked in: btrfs blake2b_generic xor xor_neon
> zstd_compress raid6_pq crct10dif_ce ip_tables x_tables ipv6
> [37012.140742] CPU: 0 PID: 289001 Comm: kworker/u64:3 Not tainted
> 5.11.0-rc5+ #10
> [37012.142839] Hardware name: QEMU KVM Virtual Machine, BIOS 0.0.0
> 02/06/2015
> [37012.144787] Workqueue: btrfs-endio btrfs_work_helper [btrfs]
> [37012.146474] pstate: 20000005 (nzCv daif -PAN -UAO -TCO BTYPE=--)
> [37012.148175] pc : __crc32c_le+0x84/0xe8
> [37012.149266] lr : chksum_digest+0x24/0x40
> [37012.150420] sp : ffff80001638f8f0
> [37012.151491] x29: ffff80001638f8f0 x28: ffff0000c7bb0000
> [37012.152982] x27: ffff0000d1a27000 x26: ffff0002f21b56e0
> [37012.154565] x25: ffff800011df3948 x24: 0000004000000000
> [37012.156063] x23: ffff000000000000 x22: ffff80001638fa00
> [37012.157570] x21: 0000000000000004 x20: ffff0000c7bb0050
> [37012.159145] x19: ffff80001638fc88 x18: 0000000000000000
> [37012.160684] x17: 0000000000000000 x16: 0000000000000000
> [37012.162190] x15: 0000051d5454c764 x14: 000000000000017a
> [37012.163774] x13: 0000000000000145 x12: 0000000000000001
> [37012.165282] x11: 0000000000000000 x10: 00000000000009d0
> [37012.166849] x9 : ffff0000ca305564 x8 : 0000000000000000
> [37012.168395] x7 : 0000000000000000 x6 : ffff800011f23980
> [37012.169883] x5 : 00000000006f6964 x4 : ffff8000105dd7a8
> [37012.171476] x3 : ffff80001638fc88 x2 : 0000000000010000
> [37012.172997] x1 : bc61d1f66c080000 x0 : 00000000ffffffff
> [37012.174642] Call trace:
> [37012.175427]  __crc32c_le+0x84/0xe8
> [37012.176419]  crypto_shash_digest+0x34/0x58
> [37012.177616]  check_compressed_csum+0xd0/0x2b0 [btrfs]
> [37012.179160]  end_compressed_bio_read+0xb8/0x308 [btrfs]
> [37012.180731]  bio_endio+0x12c/0x1d8
> [37012.181712]  end_workqueue_fn+0x3c/0x60 [btrfs]
> [37012.183161]  btrfs_work_helper+0xf4/0x5a8 [btrfs]
> [37012.184570]  process_one_work+0x1ec/0x4c0
> [37012.185727]  worker_thread+0x48/0x478
> [37012.186823]  kthread+0x158/0x160
> [37012.187768]  ret_from_fork+0x10/0x34
> [37012.188791] Code: 9ac55c08 9ac65d08 1a880000 b4000122 (a8c21023)
> [37012.190486] ---[ end trace 4f73e813d058b84c ]---
> [37019.180684] note: kworker/u64:3[289001] exited with preempt_count 1
> ---------------
>
>   Could you please take a look?
>
> Thanks, Anand

  reply	other threads:[~2021-02-02 10:25 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-01-26  8:33 [PATCH v5 00/18] btrfs: add read-only support for subpage sector size Qu Wenruo
2021-01-26  8:33 ` [PATCH v5 01/18] btrfs: merge PAGE_CLEAR_DIRTY and PAGE_SET_WRITEBACK to PAGE_START_WRITEBACK Qu Wenruo
2021-01-27 15:56   ` Josef Bacik
2021-01-26  8:33 ` [PATCH v5 02/18] btrfs: set UNMAPPED bit early in btrfs_clone_extent_buffer() for subpage support Qu Wenruo
2021-01-27 15:56   ` Josef Bacik
2021-01-26  8:33 ` [PATCH v5 03/18] btrfs: introduce the skeleton of btrfs_subpage structure Qu Wenruo
2021-01-26  8:33 ` [PATCH v5 04/18] btrfs: make attach_extent_buffer_page() handle subpage case Qu Wenruo
2021-01-27 16:01   ` Josef Bacik
2021-01-26  8:33 ` [PATCH v5 05/18] btrfs: make grab_extent_buffer_from_page() " Qu Wenruo
2021-01-27 16:20   ` Josef Bacik
2021-01-26  8:33 ` [PATCH v5 06/18] btrfs: support subpage for extent buffer page release Qu Wenruo
2021-01-27 16:21   ` Josef Bacik
2021-02-01 15:32     ` David Sterba
2021-01-26  8:33 ` [PATCH v5 07/18] btrfs: attach private to dummy extent buffer pages Qu Wenruo
2021-01-27 16:21   ` Josef Bacik
2021-01-26  8:33 ` [PATCH v5 08/18] btrfs: introduce helpers for subpage uptodate status Qu Wenruo
2021-01-27 16:34   ` Josef Bacik
2021-01-26  8:33 ` [PATCH v5 09/18] btrfs: introduce helpers for subpage error status Qu Wenruo
2021-01-27 16:34   ` Josef Bacik
2021-01-26  8:33 ` [PATCH v5 10/18] btrfs: support subpage in set/clear_extent_buffer_uptodate() Qu Wenruo
2021-01-27 16:35   ` Josef Bacik
2021-01-26  8:33 ` [PATCH v5 11/18] btrfs: support subpage in btrfs_clone_extent_buffer Qu Wenruo
2021-01-27 16:35   ` Josef Bacik
2021-01-26  8:33 ` [PATCH v5 12/18] btrfs: support subpage in try_release_extent_buffer() Qu Wenruo
2021-01-27 16:37   ` Josef Bacik
2021-01-26  8:33 ` [PATCH v5 13/18] btrfs: introduce read_extent_buffer_subpage() Qu Wenruo
2021-01-27 16:39   ` Josef Bacik
2021-01-26  8:33 ` [PATCH v5 14/18] btrfs: support subpage in endio_readpage_update_page_status() Qu Wenruo
2021-01-27 16:42   ` Josef Bacik
2021-01-26  8:33 ` [PATCH v5 15/18] btrfs: introduce subpage metadata validation check Qu Wenruo
2021-01-27 16:47   ` Josef Bacik
2021-01-26  8:34 ` [PATCH v5 16/18] btrfs: introduce btrfs_subpage for data inodes Qu Wenruo
2021-01-27 16:56   ` Josef Bacik
2021-02-01 15:42     ` David Sterba
2021-01-26  8:34 ` [PATCH v5 17/18] btrfs: integrate page status update for data read path into begin/end_page_read() Qu Wenruo
2021-01-27 17:13   ` Josef Bacik
2021-02-01 15:47     ` David Sterba
2021-01-26  8:34 ` [PATCH v5 18/18] btrfs: allow RO mount of 4K sector size fs on 64K page system Qu Wenruo
2021-01-27 17:13   ` Josef Bacik
2021-02-01 15:49   ` David Sterba
2021-01-27 16:17 ` [PATCH v5 00/18] btrfs: add read-only support for subpage sector size Josef Bacik
2021-01-28  0:30   ` Qu Wenruo
2021-01-28 10:34     ` David Sterba
2021-01-28 10:51       ` Qu Wenruo
2021-02-01 14:50         ` David Sterba
2021-02-01 15:55 ` David Sterba
2021-02-02  9:21 ` [bug report] Unable to handle kernel paging request Anand Jain
2021-02-02 10:23   ` Qu Wenruo [this message]
2021-02-02 11:28     ` Anand Jain
2021-02-02 13:37       ` Anand Jain
2021-02-04  5:13         ` Qu Wenruo
2021-02-03 13:20 ` [PATCH v5 00/18] btrfs: add read-only support for subpage sector size David Sterba

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