Re: [PATCH 2/2] Revert "arm64: Enable vmalloc-huge with ptdump"

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TO: Lorenzo Stoakes <[email protected]>
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CC: Lorenzo Stoakes <[email protected]>

Hi Lorenzo,

kernel test robot noticed the following build warnings:

[auto build test WARNING on a635d6748234582ea287c5ffeae28b9b23f91c7e]

url:    https://github.com/intel-lab-lkp/linux/commits/Lorenzo-Stoakes/mm-vmalloc-acquire-init_mm-read-lock-on-huge-vmap-promotion/20260710-185124
base:   a635d6748234582ea287c5ffeae28b9b23f91c7e
patch link:    https://lore.kernel.org/r/20260710-series-vmap-race-fix-v1-2-5b3794c113fe%40kernel.org
patch subject: [PATCH 2/2] Revert "arm64: Enable vmalloc-huge with ptdump"
:::::: branch date: 10 hours ago
:::::: commit date: 10 hours ago
config: mips-randconfig-r073-20260710 (https://download.01.org/0day-ci/archive/20260711/[email protected]/config)
compiler: mips-linux-gcc (GCC) 12.5.0
smatch: v0.5.0-9185-gbcc58b9c

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]>
| Reported-by: Dan Carpenter <[email protected]>
| Closes: https://lore.kernel.org/r/[email protected]/

smatch warnings:
include/linux/mmap_lock.h:624 class_mmap_read_lock_try_constructor() warn: passing zero to 'ERR_PTR'

vim +/ERR_PTR +624 include/linux/mmap_lock.h

9740ca4e95b43b Michel Lespinasse 2020-06-08  621  
c042c505210dc3 Peter Zijlstra    2025-04-16  622  DEFINE_GUARD(mmap_read_lock, struct mm_struct *,
c042c505210dc3 Peter Zijlstra    2025-04-16  623  	     mmap_read_lock(_T), mmap_read_unlock(_T))
b5a299112e7d1e Lorenzo Stoakes   2026-07-10 @624  DEFINE_GUARD_COND(mmap_read_lock, _try, mmap_read_trylock(_T))
c042c505210dc3 Peter Zijlstra    2025-04-16  625  

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