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Date: Tue, 10 Oct 2023 08:41:19 +0800
From: Philip Li <philip.li@...el.com>
To: kernel test robot <lkp@...el.com>
CC: Masahiro Yamada <yamada.masahiro@...ionext.com>,
<oe-kbuild-all@...ts.linux.dev>, <linux-kernel@...r.kernel.org>
Subject: Re: arch/alpha/mm/init.c:265:1: error: no previous prototype for
'srm_paging_stop'
On Tue, Oct 10, 2023 at 03:25:25AM +0800, kernel test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
> head: 94f6f0550c625fab1f373bb86a6669b45e9748b3
> commit: b1fbfcb4a20949df08dd995927cdc5ad220c128d kbuild: make single target builds even faster
> date: 3 years, 11 months ago
> config: alpha-allnoconfig (https://download.01.org/0day-ci/archive/20231010/202310100311.WYXC5S24-lkp@intel.com/config)
> compiler: alpha-linux-gcc (GCC) 13.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231010/202310100311.WYXC5S24-lkp@intel.com/reproduce)
>
> 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 <lkp@...el.com>
> | Closes: https://lore.kernel.org/oe-kbuild-all/202310100311.WYXC5S24-lkp@intel.com/
>
> All error/warnings (new ones prefixed by >>):
Sorry for the false report, kindly ignore this one which bisects to the wrong first bad commit.
>
> >> init/main.c:494:20: warning: no previous prototype for 'arch_post_acpi_subsys_init' [-Wmissing-prototypes]
> 494 | void __init __weak arch_post_acpi_subsys_init(void) { }
> | ^~~~~~~~~~~~~~~~~~~~~~~~~~
> >> init/main.c:506:20: warning: no previous prototype for 'mem_encrypt_init' [-Wmissing-prototypes]
> 506 | void __init __weak mem_encrypt_init(void) { }
> | ^~~~~~~~~~~~~~~~
> >> init/main.c:508:20: warning: no previous prototype for 'poking_init' [-Wmissing-prototypes]
> 508 | void __init __weak poking_init(void) { }
> | ^~~~~~~~~~~
> --
> >> init/calibrate.c:261:37: warning: no previous prototype for 'calibrate_delay_is_known' [-Wmissing-prototypes]
> 261 | unsigned long __attribute__((weak)) calibrate_delay_is_known(void)
> | ^~~~~~~~~~~~~~~~~~~~~~~~
> --
> >> arch/alpha/mm/init.c:265:1: error: no previous prototype for 'srm_paging_stop' [-Werror=missing-prototypes]
> 265 | srm_paging_stop (void)
> | ^~~~~~~~~~~~~~~
> cc1: all warnings being treated as errors
> --
> >> arch/alpha/mm/fault.c:84:1: error: no previous prototype for 'do_page_fault' [-Werror=missing-prototypes]
> 84 | do_page_fault(unsigned long address, unsigned long mmcsr,
> | ^~~~~~~~~~~~~
> cc1: all warnings being treated as errors
> --
> >> kernel/fork.c:160:13: warning: no previous prototype for 'arch_release_task_struct' [-Wmissing-prototypes]
> 160 | void __weak arch_release_task_struct(struct task_struct *tsk)
> | ^~~~~~~~~~~~~~~~~~~~~~~~
> >> kernel/fork.c:752:20: warning: no previous prototype for 'arch_task_cache_init' [-Wmissing-prototypes]
> 752 | void __init __weak arch_task_cache_init(void) { }
> | ^~~~~~~~~~~~~~~~~~~~
> >> kernel/fork.c:841:12: warning: no previous prototype for 'arch_dup_task_struct' [-Wmissing-prototypes]
> 841 | int __weak arch_dup_task_struct(struct task_struct *dst,
> | ^~~~~~~~~~~~~~~~~~~~
> --
> >> kernel/exit.c:1732:13: warning: no previous prototype for 'abort' [-Wmissing-prototypes]
> 1732 | __weak void abort(void)
> | ^~~~~
> In file included from include/linux/preempt.h:11,
> from include/linux/spinlock.h:51,
> from include/linux/mmzone.h:8,
> from include/linux/gfp.h:6,
> from include/linux/mm.h:10,
> from kernel/exit.c:8:
> In function '__list_add',
> inlined from 'list_add' at include/linux/list.h:79:2,
> inlined from 'exit_notify' at kernel/exit.c:677:3:
> include/linux/list.h:65:19: warning: storing the address of local variable 'dead' in '((struct list_head *)tsk)[44].prev' [-Wdangling-pointer=]
> 65 | new->prev = prev;
> | ~~~~~~~~~~^~~~~~
> kernel/exit.c: In function 'exit_notify':
> kernel/exit.c:653:19: note: 'dead' declared here
> 653 | LIST_HEAD(dead);
> | ^~~~
> include/linux/list.h:24:26: note: in definition of macro 'LIST_HEAD'
> 24 | struct list_head name = LIST_HEAD_INIT(name)
> | ^~~~
> kernel/exit.c:649:45: note: 'tsk' declared here
> 649 | static void exit_notify(struct task_struct *tsk, int group_dead)
> | ~~~~~~~~~~~~~~~~~~~~^~~
> --
> >> kernel/kallsyms.c:450:12: warning: no previous prototype for 'arch_get_kallsym' [-Wmissing-prototypes]
> 450 | int __weak arch_get_kallsym(unsigned int symnum, unsigned long *value,
> | ^~~~~~~~~~~~~~~~
> --
> >> kernel/iomem.c:9:22: warning: no previous prototype for 'ioremap_cache' [-Wmissing-prototypes]
> 9 | __weak void __iomem *ioremap_cache(resource_size_t offset, unsigned long size)
> | ^~~~~~~~~~~~~
> --
> >> fs/open.c:870: warning: Excess function parameter 'opened' description in 'finish_open'
> >> fs/open.c:912: warning: Excess function parameter 'cred' description in 'vfs_open'
> --
> >> fs/read_write.c:88: warning: Function parameter or member 'maxsize' not described in 'generic_file_llseek_size'
> >> fs/read_write.c:88: warning: Excess function parameter 'size' description in 'generic_file_llseek_size'
> --
> >> fs/d_path.c:311:7: warning: no previous prototype for 'simple_dname' [-Wmissing-prototypes]
> 311 | char *simple_dname(struct dentry *dentry, char *buffer, int buflen)
> | ^~~~~~~~~~~~
> ..
>
>
> vim +/srm_paging_stop +265 arch/alpha/mm/init.c
>
> ^1da177e4c3f4152 Linus Torvalds 2005-04-16 262
> ^1da177e4c3f4152 Linus Torvalds 2005-04-16 263 #if defined(CONFIG_ALPHA_GENERIC) || defined(CONFIG_ALPHA_SRM)
> ^1da177e4c3f4152 Linus Torvalds 2005-04-16 264 void
> ^1da177e4c3f4152 Linus Torvalds 2005-04-16 @265 srm_paging_stop (void)
> ^1da177e4c3f4152 Linus Torvalds 2005-04-16 266 {
> ^1da177e4c3f4152 Linus Torvalds 2005-04-16 267 /* Move the vptb back to where the SRM console expects it. */
> ^1da177e4c3f4152 Linus Torvalds 2005-04-16 268 swapper_pg_dir[1] = swapper_pg_dir[1023];
> ^1da177e4c3f4152 Linus Torvalds 2005-04-16 269 tbia();
> ^1da177e4c3f4152 Linus Torvalds 2005-04-16 270 wrvptptr(0x200000000UL);
> ^1da177e4c3f4152 Linus Torvalds 2005-04-16 271 hwrpb->vptb = 0x200000000UL;
> ^1da177e4c3f4152 Linus Torvalds 2005-04-16 272 hwrpb_update_checksum(hwrpb);
> ^1da177e4c3f4152 Linus Torvalds 2005-04-16 273
> ^1da177e4c3f4152 Linus Torvalds 2005-04-16 274 /* Reload the page tables that the console had in use. */
> ^1da177e4c3f4152 Linus Torvalds 2005-04-16 275 load_PCB(&original_pcb);
> ^1da177e4c3f4152 Linus Torvalds 2005-04-16 276 tbia();
> ^1da177e4c3f4152 Linus Torvalds 2005-04-16 277 }
> ^1da177e4c3f4152 Linus Torvalds 2005-04-16 278 #endif
> ^1da177e4c3f4152 Linus Torvalds 2005-04-16 279
>
> :::::: The code at line 265 was first introduced by commit
> :::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2
>
> :::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
> :::::: CC: Linus Torvalds <torvalds@...970.osdl.org>
>
> --
> 0-DAY CI Kernel Test Service
> https://github.com/intel/lkp-tests/wiki
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