Re: [PATCH] block: stack zoned resource limits

Hello,

kernel test robot noticed "blktests.zbd/011.fail" on:

commit: c17db973b5faf59694eda2e4ea164b29b69c8973 ("[PATCH] block: stack zoned resource limits")
url: https://github.com/intel-lab-lkp/linux/commits/Yao-Sang/block-stack-zoned-resource-limits/20260520-174028
base: https://git.kernel.org/cgit/linux/kernel/git/axboe/linux.git for-next
patch link: https://lore.kernel.org/all/[email protected]/
patch subject: [PATCH] block: stack zoned resource limits

in testcase: blktests
version: blktests-x86_64-9131687-1_20260529
with following parameters:

	test: zbd-011


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 <[email protected]>
| Closes: https://lore.kernel.org/oe-lkp/[email protected]


2026-05-29 09:25:41 cd /lkp/benchmarks/blktests
Defaulting to policy_version 2 because kernel supports it.
Customizing passphrase hashing difficulty for this system...
Created global config file at "/etc/fscrypt.conf".
Allow users other than root to create fscrypt metadata on the root filesystem?
(See https://github.com/google/fscrypt#setting-up-fscrypt-on-a-filesystem) [y/N] Metadata directories created at "/.fscrypt", writable by root only.
2026-05-29 09:25:47 echo zbd/011
2026-05-29 09:25:47 ./check zbd/011
zbd/011 (DM zone resource limits stacking)                  
zbd/011 (DM zone resource limits stacking)                   [failed]
    runtime    ...  6.852s
    --- tests/zbd/011.out	2026-05-29 06:56:18.000000000 +0000
    +++ /lkp/benchmarks/blktests/results/nodev/zbd/011.out.bad	2026-05-29 09:25:54.319411071 +0000
    @@ -1,2 +1,13 @@
     Running zbd/011
    +Invalid max active zones limit: 64 should be 0
    +Test 9 failed: Map 32 CNV zones of the 1st nullb and all SWR zones of the 2nd nullb
    +Invalid max active zones limit: 64 should be 0
    +Test 11 failed: Map 32 SWR zones of the 1st nullb and all SWR zones of the 2nd nullb
    +Invalid max open zones limit: 48 should be 64
    +Test 12 failed: Map 128 SWR zones of the 1st nullb and 16 SWR zones of the 2nd nullb
    ...
    (Run 'diff -u tests/zbd/011.out /lkp/benchmarks/blktests/results/nodev/zbd/011.out.bad' to see the entire diff)



The kernel config and materials to reproduce are available at:
https://download.01.org/0day-ci/archive/20260531/[email protected]



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https://github.com/intel/lkp-tests/wiki