On 21/04/15 09:14AM, riteshh wrote:
> On 21/04/12 07:33PM, Qu Wenruo wrote:
> > Good news, you can fetch the subpage branch for better test results.
> >
> > Now the branch should pass all generic tests, except defrag and known
> > failures.
> > And no more random crash during the tests.
> Thanks, let me test it on PPC64 box.

I do see some failures remaining with the patch series.
However the one which is blocking my testing is the tests/generic/095
I see kernel BUG hitting with below signature.

Please let me know if this a known failure?

<xfstests config>
#:~/work-tools/xfstests$ sudo ./check -g auto
SECTION       -- btrfs_4k
FSTYP         -- btrfs
PLATFORM      -- Linux/ppc64le qemu 5.12.0-rc7-02316-g3490dae50c0 #73 SMP Thu 
Apr 15 07:29:23 CDT 2021
MKFS_OPTIONS  -- -f -s 4096 -n 4096 /dev/loop3
MOUNT_OPTIONS -- /dev/loop3 /mnt1/scratch

<kernel logs>
[ 6057.560580] BTRFS warning (device loop3): read-write for sector size 4096 
with page size 65536 is experimental
[ 6057.861383] run fstests generic/095 at 2021-04-15 14:12:10
[ 6058.345127] BTRFS info (device loop2): disk space caching is enabled
[ 6058.348910] BTRFS info (device loop2): has skinny extents
[ 6058.351930] BTRFS warning (device loop2): read-write for sector size 4096 
with page size 65536 is experimental
[ 6059.896382] BTRFS: device fsid 43ec9cdf-c124-4460-ad93-933bfd5ddbbd devid 1 
transid 5 /dev/loop3 scanned by mkfs.btrfs (739641)
[ 6060.225107] BTRFS info (device loop3): disk space caching is enabled
[ 6060.226213] BTRFS info (device loop3): has skinny extents
[ 6060.227084] BTRFS warning (device loop3): read-write for sector size 4096 
with page size 65536 is experimental
[ 6060.234537] BTRFS info (device loop3): checking UUID tree
[ 6061.375902] assertion failed: PagePrivate(page) && page->private, in 
[ 6061.378296] ------------[ cut here ]------------
[ 6061.379422] kernel BUG at fs/btrfs/ctree.h:3403!
cpu 0x5: Vector: 700 (Program Check) at [c0000000260d7490]
    pc: c000000000a9370c: assertfail.constprop.11+0x34/0x48
    lr: c000000000a93708: assertfail.constprop.11+0x30/0x48
    sp: c0000000260d7730
   msr: 800000000282b033
  current = 0xc0000000260c0080
  paca    = 0xc00000003fff8a00   irqmask: 0x03   irq_happened: 0x01
    pid   = 739712, comm = fio
kernel BUG at fs/btrfs/ctree.h:3403!
Linux version 5.12.0-rc7-02316-g3490dae50c0 (riteshh@xxxx) (gcc (Ubuntu 
8.4.0-1ubuntu1~18.04) 8.4.0, GNU ld (GNU Binutils for Ubuntu) 2.30) #73 SMP Thu 
Apr 15 07:29:23 CDT 2021
enter ? for help
[c0000000260d7790] c000000000a90280 btrfs_subpage_assert.isra.9+0x70/0x110
[c0000000260d77b0] c000000000a91064 btrfs_subpage_set_uptodate+0x54/0x110
[c0000000260d7800] c0000000009c6d0c btrfs_dirty_pages+0x1bc/0x2c0
[c0000000260d7880] c0000000009c7298 btrfs_buffered_write+0x488/0x7f0
[c0000000260d79d0] c0000000009cbeb4 btrfs_file_write_iter+0x314/0x520
[c0000000260d7a50] c00000000055fd84 do_iter_readv_writev+0x1b4/0x260
[c0000000260d7ac0] c00000000056114c do_iter_write+0xdc/0x2c0
[c0000000260d7b10] c0000000005c2d2c iter_file_splice_write+0x2ec/0x510
[c0000000260d7c30] c0000000005c1ba0 do_splice_from+0x50/0x70
[c0000000260d7c50] c0000000005c37e8 do_splice+0x5a8/0x910
[c0000000260d7cd0] c0000000005c3ce0 sys_splice+0x190/0x300
[c0000000260d7d60] c000000000039ba4 system_call_exception+0x384/0x3d0
[c0000000260d7e10] c00000000000d45c system_call_common+0xec/0x278
--- Exception: c00 (System Call) at 00007ffff72ef170


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