[LTP] ❌ FAIL: Test report for kernel 5.4.21-2d636a1.cki (stable)

[Jan Stancek <jstancek@redhat.com>]

----- Original Message -----
> 
> Hello,
> 
> We ran automated tests on a recent commit from this kernel tree:
> 
>        Kernel repo:
>        git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
>             Commit: 2d636a1263be - Linux 5.4.21
> 
> The results of these automated tests are provided below.
> 
>     Overall result: FAILED (see details below)
>              Merge: OK
>            Compile: OK
>              Tests: FAILED
> 
> All kernel binaries, config files, and logs are available for download here:
> 
>   https://cki-artifacts.s3.us-east-2.amazonaws.com/index.html?prefix=datawarehouse/2020/02/19/446693
> 
> One or more kernel tests failed:
> 
>     ppc64le:
>      ? LTP

This is warning from preadv203, because it failed to clear loop device.
Kernel reports an I/O error:

[ 2338.786854] blk_update_request: I/O error, dev loop0, sector 512 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0

tst_test.c:1278: INFO: Testing on ext3
tst_mkfs.c:89: INFO: Formatting /dev/loop0 with ext3 opts='' extra opts=''
mke2fs 1.45.5 (07-Jan-2020)
tst_test.c:1215: INFO: Timeout per run is 0h 05m 00s
preadv203.c:143: INFO: Number of full_reads 425, short reads 10, zero len reads 0, EAGAIN(s) 100
preadv203.c:180: INFO: Number of writes 300
preadv203.c:194: INFO: Cache dropped 1 times
preadv203.c:223: PASS: Got some EAGAIN
tst_test.c:1278: INFO: Testing on ext4
tst_device.c:348: WARN: Failed to clear 512k block on /dev/loop0
tst_mkfs.c:87: BROK: tst_clear_device() failed

Summary:
passed   2
failed   0
skipped  0
warnings 1

but I haven't been able to reliably reproduce it so far.