[linux-stable-rc:queue/5.4 9697/9999] include/linux/blk-mq.h:62:33: error: field 'kobj' has incomplete type

From: kernel test robot
Date: Mon Apr 04 2022 - 18:48:15 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git queue/5.4
head: 336570623f4c87024cb5937f243daba45774a0f0
commit: f990ca652d25eff602546c126a71b3810a21acee [9697/9999] block: don't merge across cgroup boundaries if blkcg is enabled
config: i386-tinyconfig (https://download.01.org/0day-ci/archive/20220405/202204050517.U9PdCKfa-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.2.0-19) 11.2.0
reproduce (this is a W=1 build):
# https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?id=f990ca652d25eff602546c126a71b3810a21acee
git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
git fetch --no-tags linux-stable-rc queue/5.4
git checkout f990ca652d25eff602546c126a71b3810a21acee
# save the config file to linux build tree
mkdir build_dir
make W=1 O=build_dir ARCH=i386 prepare

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

In file included from include/linux/blk-cgroup.h:25,
from include/linux/writeback.h:14,
from include/linux/memcontrol.h:22,
from include/linux/swap.h:9,
from include/linux/suspend.h:5,
from arch/x86/kernel/asm-offsets.c:13:
>> include/linux/blk-mq.h:62:33: error: field 'kobj' has incomplete type
62 | struct kobject kobj;
| ^~~~
include/linux/blk-mq.h: In function 'blk_mq_rq_from_pdu':
include/linux/blk-mq.h:352:29: error: invalid application of 'sizeof' to incomplete type 'struct request'
352 | return pdu - sizeof(struct request);
| ^~~~~~
include/linux/blk-mq.h: In function 'blk_mq_rq_to_pdu':
include/linux/blk-mq.h:356:19: error: invalid use of undefined type 'struct request'
356 | return rq + 1;
| ^
include/linux/blk-mq.h: In function 'request_to_qc_t':
include/linux/blk-mq.h:370:15: error: invalid use of undefined type 'struct request'
370 | if (rq->tag != -1)
| ^~
include/linux/blk-mq.h:371:26: error: invalid use of undefined type 'struct request'
371 | return rq->tag | (hctx->queue_num << BLK_QC_T_SHIFT);
| ^~
include/linux/blk-mq.h:373:18: error: invalid use of undefined type 'struct request'
373 | return rq->internal_tag | (hctx->queue_num << BLK_QC_T_SHIFT) |
| ^~
include/linux/blk-mq.h: In function 'blk_mq_cleanup_rq':
include/linux/blk-mq.h:379:15: error: invalid use of undefined type 'struct request'
379 | if (rq->q->mq_ops->cleanup_rq)
| ^~
include/linux/blk-mq.h:380:19: error: invalid use of undefined type 'struct request'
380 | rq->q->mq_ops->cleanup_rq(rq);
| ^~
make[2]: *** [scripts/Makefile.build:99: arch/x86/kernel/asm-offsets.s] Error 1
make[2]: Target '__build' not remade because of errors.
make[1]: *** [Makefile:1135: prepare0] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:179: sub-make] Error 2
make: Target 'prepare' not remade because of errors.

vim +/kobj +62 include/linux/blk-mq.h

320ae51feed5c2 Jens Axboe 2013-10-24 11
fe644072dfee06 Linus Walleij 2018-04-20 12 /**
fe644072dfee06 Linus Walleij 2018-04-20 13 * struct blk_mq_hw_ctx - State for a hardware queue facing the hardware block device
fe644072dfee06 Linus Walleij 2018-04-20 14 */
320ae51feed5c2 Jens Axboe 2013-10-24 15 struct blk_mq_hw_ctx {
320ae51feed5c2 Jens Axboe 2013-10-24 16 struct {
320ae51feed5c2 Jens Axboe 2013-10-24 17 spinlock_t lock;
320ae51feed5c2 Jens Axboe 2013-10-24 18 struct list_head dispatch;
8d354f133e86dd Jens Axboe 2016-08-25 19 unsigned long state; /* BLK_MQ_S_* flags */
320ae51feed5c2 Jens Axboe 2013-10-24 20 } ____cacheline_aligned_in_smp;
320ae51feed5c2 Jens Axboe 2013-10-24 21
9f993737906b30 Jens Axboe 2017-04-10 22 struct delayed_work run_work;
e4043dcf30811f Jens Axboe 2014-04-09 23 cpumask_var_t cpumask;
506e931f92defd Jens Axboe 2014-05-07 24 int next_cpu;
506e931f92defd Jens Axboe 2014-05-07 25 int next_cpu_batch;
320ae51feed5c2 Jens Axboe 2013-10-24 26
320ae51feed5c2 Jens Axboe 2013-10-24 27 unsigned long flags; /* BLK_MQ_F_* flags */
320ae51feed5c2 Jens Axboe 2013-10-24 28
bd166ef183c263 Jens Axboe 2017-01-17 29 void *sched_data;
320ae51feed5c2 Jens Axboe 2013-10-24 30 struct request_queue *queue;
f70ced09170761 Ming Lei 2014-09-25 31 struct blk_flush_queue *fq;
320ae51feed5c2 Jens Axboe 2013-10-24 32
320ae51feed5c2 Jens Axboe 2013-10-24 33 void *driver_data;
320ae51feed5c2 Jens Axboe 2013-10-24 34
88459642cba452 Omar Sandoval 2016-09-17 35 struct sbitmap ctx_map;
1429d7c9467e1e Jens Axboe 2014-05-19 36
b347689ffbca74 Ming Lei 2017-10-14 37 struct blk_mq_ctx *dispatch_from;
6e768717304bdb Ming Lei 2018-07-03 38 unsigned int dispatch_busy;
b347689ffbca74 Ming Lei 2017-10-14 39
f31967f0e455d0 Jens Axboe 2018-10-29 40 unsigned short type;
f31967f0e455d0 Jens Axboe 2018-10-29 41 unsigned short nr_ctx;
6e768717304bdb Ming Lei 2018-07-03 42 struct blk_mq_ctx **ctxs;
4bb659b156996f Jens Axboe 2014-05-09 43
5815839b3ca16b Ming Lei 2018-06-25 44 spinlock_t dispatch_wait_lock;
ac6424b981bce1 Ingo Molnar 2017-06-20 45 wait_queue_entry_t dispatch_wait;
8537b12034cf1f Alexander Gordeev 2014-06-17 46 atomic_t wait_index;
320ae51feed5c2 Jens Axboe 2013-10-24 47
320ae51feed5c2 Jens Axboe 2013-10-24 48 struct blk_mq_tags *tags;
bd166ef183c263 Jens Axboe 2017-01-17 49 struct blk_mq_tags *sched_tags;
320ae51feed5c2 Jens Axboe 2013-10-24 50
320ae51feed5c2 Jens Axboe 2013-10-24 51 unsigned long queued;
320ae51feed5c2 Jens Axboe 2013-10-24 52 unsigned long run;
8d354f133e86dd Jens Axboe 2016-08-25 53 #define BLK_MQ_MAX_DISPATCH_ORDER 7
320ae51feed5c2 Jens Axboe 2013-10-24 54 unsigned long dispatched[BLK_MQ_MAX_DISPATCH_ORDER];
320ae51feed5c2 Jens Axboe 2013-10-24 55
320ae51feed5c2 Jens Axboe 2013-10-24 56 unsigned int numa_node;
17ded320706c63 Jens Axboe 2015-01-07 57 unsigned int queue_num;
320ae51feed5c2 Jens Axboe 2013-10-24 58
0d2602ca30e410 Jens Axboe 2014-05-13 59 atomic_t nr_active;
0d2602ca30e410 Jens Axboe 2014-05-13 60
9467f85960a31d Thomas Gleixner 2016-09-22 61 struct hlist_node cpuhp_dead;
320ae51feed5c2 Jens Axboe 2013-10-24 @62 struct kobject kobj;
05229beeddf7e7 Jens Axboe 2015-11-05 63
6e219353afa1f6 Stephen Bates 2016-09-13 64 unsigned long poll_considered;
05229beeddf7e7 Jens Axboe 2015-11-05 65 unsigned long poll_invoked;
05229beeddf7e7 Jens Axboe 2015-11-05 66 unsigned long poll_success;
9c1051aacde828 Omar Sandoval 2017-05-04 67

:::::: The code at line 62 was first introduced by commit
:::::: 320ae51feed5c2f13664aa05a76bec198967e04d blk-mq: new multi-queue block IO queueing mechanism

:::::: TO: Jens Axboe <axboe@xxxxxxxxx>
:::::: CC: Jens Axboe <axboe@xxxxxxxxx>

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0-DAY CI Kernel Test Service
https://01.org/lkp

Next message: Matteo Croce: "[PATCH] bpf: make unprivileged BPF a compile time choice"
Previous message: Stephen Rothwell: "linux-next: Fixes tag needs some work in the scmi tree"
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