Re: [PATCH] block: Wait for inflight requests in bdev_release()

[kernel test robot <yi1.lai@intel.com>]

Hello,

kernel test robot noticed "blktests.loop/003.fail" on:

commit: 7ec8033abf279c978b0e9ffcc03367e24fd6205b ("[PATCH] block: Wait for inflight requests in bdev_release()")
url: https://github.com/intel-lab-lkp/linux/commits/Tetsuo-Handa/block-Wait-for-inflight-requests-in-bdev_release/20261012-172605
base: https://git.kernel.org/cgit/linux/kernel/git/axboe/linux.git for-next patch link: https://lore.kernel.org/all/53c3ccf7-1a5e-4861-afc0-7cbfd3284655@I-love.SAKURA.ne.jp/
patch subject: [PATCH] block: Wait for inflight requests in bdev_release()

in testcase: blktests
version: blktests-x86_64-0027abd-1_20261027
with following parameters:

	test: loop-group-00


config: x86_64-rhel-9.4-func
compiler: gcc-14
test machine: 4 threads Intel(R) Core(TM) i5-6500 CPU @ 3.20GHz (Skylake) with 32G memory

(please refer to attached dmesg/kmsg for entire log/backtrace)


If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <yi1.lai@intel.com>
| Closes: https://lore.kernel.org/oe-lkp/202610300858.1721b701-lkp@intel.com


2026-10-29 13:18:00 cd /lkp/benchmarks/blktests
2026-10-29 13:18:01 sed "s:^:loop/:" /lkp/benchmarks/blktests/tests/loop-group-00
2026-10-29 13:18:01 ./check loop/001 loop/002 loop/003 loop/004 loop/005 loop/006 loop/007 loop/008 loop/009 loop/010 loop/011 loop/012 loop/013
loop/001 (scan loop device partitions)                      
loop/001 (scan loop device partitions)                       [passed]
    runtime    ...  0.439s
loop/002 (try various loop device block sizes)              
loop/002 (try various loop device block sizes)               [passed]
    runtime    ...  0.332s
loop/003 (time opening and closing an unbound loop device)  
loop/003 (time opening and closing an unbound loop device)   [failed]
    runtime    ...  8.584s
    --- tests/loop/003.out	2026-10-27 23:51:50.000000000 +0000
    +++ /lkp/benchmarks/blktests/results/nodev/loop/003.out.bad	2026-10-29 13:18:10.921226342 +0000
    @@ -1,3 +1,3 @@
     Running loop/003
    -Test took 0 seconds
    +Test took 8 seconds
     Test complete
loop/004 (combine loop direct I/O mode and a custom block size)
loop/004 (combine loop direct I/O mode and a custom block size) [passed]
    runtime    ...  14.512s
loop/005 (call LOOP_GET_STATUS{,64} with a NULL arg)        
loop/005 (call LOOP_GET_STATUS{,64} with a NULL arg)         [passed]
    runtime    ...  0.057s
loop/006 (change loop backing file while creating/removing another loop device)
loop/006 (change loop backing file while creating/removing another loop device) [failed]
    runtime    ...  89.048s
    --- tests/loop/006.out	2026-10-27 23:51:50.000000000 +0000
    +++ /lkp/benchmarks/blktests/results/nodev/loop/006.out.bad	2026-10-29 13:19:54.981232346 +0000
    @@ -1,2 +1,3 @@
     Running loop/006
    +ioctl: Operation not supported
     Test complete
loop/007 (update loop device capacity with filesystem)      
loop/007 (update loop device capacity with filesystem)       [passed]
    runtime    ...  0.223s
loop/008 (setup GPT and ESP on a raw disk image)            
loop/008 (setup GPT and ESP on a raw disk image)             [passed]
    runtime    ...  0.497s
loop/009 (check that LOOP_CONFIGURE sends uevents for partitions)
loop/009 (check that LOOP_CONFIGURE sends uevents for partitions) [passed]
    runtime    ...  0.442s
loop/010 (check stale loop partition)                       
loop/010 (check stale loop partition)                        [passed]
    runtime    ...  92.316s
loop/011 (Make sure unsupported backing file fallocate does not fill dmesg with errors)
loop/011 (Make sure unsupported backing file fallocate does not fill dmesg with errors) [passed]
    runtime    ...  0.276s
loop/012 (check for spurious partition removal when partscan is enabled)
loop/012 (check for spurious partition removal when partscan is enabled) [not run]
    systemd version is older than 259
loop/013 (remove manually added partitions before loop device reuse)
loop/013 (remove manually added partitions before loop device reuse) [passed]
    runtime    ...  0.740s



The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20261030/202610300858.1721b701-lkp@intel.com


--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki