Hi Roman, [auto build test ERROR on block/for-next] [also build test ERROR on v4.7 next-20160805] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] url: https://github.com/0day-ci/linux/commits/Roman-Pen/blk-mq-fix-hang-caused-by-freeze-unfreeze-sequence/20160806-014441 base: https://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux-block.git for-next config: x86_64-randconfig-x015-201631 (attached as .config) compiler: gcc-6 (Debian 6.1.1-9) 6.1.1 20160705 reproduce: # save the attached .config to linux build tree make ARCH=x86_64 All error/warnings (new ones prefixed by >>): In file included from include/linux/mmzone.h:9:0, from include/linux/gfp.h:5, from include/linux/kmod.h:22, from include/linux/module.h:13, from block/blk-core.c:15: block/blk-core.c: In function 'blk_queue_enter': >> block/blk-core.c:661:18: error: passing argument 1 of 'atomic_read' from incompatible pointer type [-Werror=incompatible-pointer-types] !atomic_read(&q->mq_freeze_depth) || ^ include/linux/wait.h:473:8: note: in definition of macro 'wait_event_interruptible' if (!(condition)) \ ^~~~~~~~~ In file included from arch/x86/include/asm/msr.h:66:0, from arch/x86/include/asm/processor.h:20, from arch/x86/include/asm/cpufeature.h:4, from arch/x86/include/asm/thread_info.h:52, from include/linux/thread_info.h:54, from arch/x86/include/asm/preempt.h:6, from include/linux/preempt.h:59, from include/linux/spinlock.h:50, from include/linux/seqlock.h:35, from include/linux/time.h:5, from include/linux/stat.h:18, from include/linux/module.h:10, from block/blk-core.c:15: arch/x86/include/asm/atomic.h:24:28: note: expected 'const atomic_t * {aka const struct <anonymous> *}' but argument is of type 'int *' static __always_inline int atomic_read(const atomic_t *v) ^~~~~~~~~~~ In file included from include/linux/mmzone.h:9:0, from include/linux/gfp.h:5, from include/linux/kmod.h:22, from include/linux/module.h:13, from block/blk-core.c:15: >> block/blk-core.c:661:18: error: passing argument 1 of 'atomic_read' from incompatible pointer type [-Werror=incompatible-pointer-types] !atomic_read(&q->mq_freeze_depth) || ^ include/linux/wait.h:278:7: note: in definition of macro '___wait_event' if (condition) \ ^~~~~~~~~ include/linux/wait.h:474:11: note: in expansion of macro '__wait_event_interruptible' __ret = __wait_event_interruptible(wq, condition); \ ^~~~~~~~~~~~~~~~~~~~~~~~~~ >> block/blk-core.c:660:9: note: in expansion of macro 'wait_event_interruptible' ret = wait_event_interruptible(q->mq_freeze_wq, ^~~~~~~~~~~~~~~~~~~~~~~~ In file included from arch/x86/include/asm/msr.h:66:0, from arch/x86/include/asm/processor.h:20, from arch/x86/include/asm/cpufeature.h:4, from arch/x86/include/asm/thread_info.h:52, from include/linux/thread_info.h:54, from arch/x86/include/asm/preempt.h:6, from include/linux/preempt.h:59, from include/linux/spinlock.h:50, from include/linux/seqlock.h:35, from include/linux/time.h:5, from include/linux/stat.h:18, from include/linux/module.h:10, from block/blk-core.c:15: arch/x86/include/asm/atomic.h:24:28: note: expected 'const atomic_t * {aka const struct <anonymous> *}' but argument is of type 'int *' static __always_inline int atomic_read(const atomic_t *v) ^~~~~~~~~~~ cc1: some warnings being treated as errors vim +/atomic_read +661 block/blk-core.c 3ef28e83 Dan Williams 2015-10-21 654 if (percpu_ref_tryget_live(&q->q_usage_counter)) 3ef28e83 Dan Williams 2015-10-21 655 return 0; 3ef28e83 Dan Williams 2015-10-21 656 6f3b0e8b Christoph Hellwig 2015-11-26 657 if (nowait) 3ef28e83 Dan Williams 2015-10-21 658 return -EBUSY; 3ef28e83 Dan Williams 2015-10-21 659 3ef28e83 Dan Williams 2015-10-21 @660 ret = wait_event_interruptible(q->mq_freeze_wq, 3ef28e83 Dan Williams 2015-10-21 @661 !atomic_read(&q->mq_freeze_depth) || 3ef28e83 Dan Williams 2015-10-21 662 blk_queue_dying(q)); 3ef28e83 Dan Williams 2015-10-21 663 if (blk_queue_dying(q)) 3ef28e83 Dan Williams 2015-10-21 664 return -ENODEV; :::::: The code at line 661 was first introduced by commit :::::: 3ef28e83ab15799742e55fd13243a5f678b04242 block: generic request_queue reference counting :::::: TO: Dan Williams <dan.j.williams@xxxxxxxxx> :::::: CC: Jens Axboe <axboe@xxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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