tree: https://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs.git fixes head: 23d1d41583726b7f9be0d069932490db8bd6711e commit: 23d1d41583726b7f9be0d069932490db8bd6711e [2/2] aio: Fix io_pgetevents() struct __compat_aio_sigset layout config: powerpc-defconfig (attached as .config) compiler: powerpc64-linux-gcc (GCC) 7.4.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 23d1d41583726b7f9be0d069932490db8bd6711e # save the attached .config to linux build tree GCC_VERSION=7.4.0 make.cross ARCH=powerpc If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): In file included from include/uapi/linux/posix_types.h:5:0, from include/uapi/linux/types.h:14, from include/linux/types.h:6, from include/linux/limits.h:6, from include/linux/kernel.h:7, from fs/aio.c:14: fs/aio.c: In function '__do_compat_sys_io_pgetevents': >> include/linux/stddef.h:8:14: warning: initialization makes integer from pointer without a cast [-Wint-conversion] #define NULL ((void *)0) ^ >> fs/aio.c:2196:38: note: in expansion of macro 'NULL' struct __compat_aio_sigset ksig = { NULL, }; ^~~~ include/linux/stddef.h:8:14: note: (near initialization for 'ksig.sigmask') #define NULL ((void *)0) ^ >> fs/aio.c:2196:38: note: in expansion of macro 'NULL' struct __compat_aio_sigset ksig = { NULL, }; ^~~~ fs/aio.c: In function '__do_compat_sys_io_pgetevents_time64': >> include/linux/stddef.h:8:14: warning: initialization makes integer from pointer without a cast [-Wint-conversion] #define NULL ((void *)0) ^ fs/aio.c:2231:38: note: in expansion of macro 'NULL' struct __compat_aio_sigset ksig = { NULL, }; ^~~~ include/linux/stddef.h:8:14: note: (near initialization for 'ksig.sigmask') #define NULL ((void *)0) ^ fs/aio.c:2231:38: note: in expansion of macro 'NULL' struct __compat_aio_sigset ksig = { NULL, }; ^~~~ vim +/NULL +2196 fs/aio.c 7a35397f8c06bf Deepa Dinamani 2018-09-19 2187 7a074e96dee625 Christoph Hellwig 2018-05-02 2188 COMPAT_SYSCALL_DEFINE6(io_pgetevents, 7a074e96dee625 Christoph Hellwig 2018-05-02 2189 compat_aio_context_t, ctx_id, 7a074e96dee625 Christoph Hellwig 2018-05-02 2190 compat_long_t, min_nr, 7a074e96dee625 Christoph Hellwig 2018-05-02 2191 compat_long_t, nr, 7a074e96dee625 Christoph Hellwig 2018-05-02 2192 struct io_event __user *, events, 9afc5eee65ca7d Arnd Bergmann 2018-07-13 2193 struct old_timespec32 __user *, timeout, 7a074e96dee625 Christoph Hellwig 2018-05-02 2194 const struct __compat_aio_sigset __user *, usig) 7a074e96dee625 Christoph Hellwig 2018-05-02 2195 { 7a074e96dee625 Christoph Hellwig 2018-05-02 @2196 struct __compat_aio_sigset ksig = { NULL, }; 7a074e96dee625 Christoph Hellwig 2018-05-02 2197 struct timespec64 t; 97abc889ee296f Oleg Nesterov 2019-06-28 2198 bool interrupted; 7a074e96dee625 Christoph Hellwig 2018-05-02 2199 int ret; 7a074e96dee625 Christoph Hellwig 2018-05-02 2200 9afc5eee65ca7d Arnd Bergmann 2018-07-13 2201 if (timeout && get_old_timespec32(&t, timeout)) 7a074e96dee625 Christoph Hellwig 2018-05-02 2202 return -EFAULT; 7a074e96dee625 Christoph Hellwig 2018-05-02 2203 7a074e96dee625 Christoph Hellwig 2018-05-02 2204 if (usig && copy_from_user(&ksig, usig, sizeof(ksig))) 7a074e96dee625 Christoph Hellwig 2018-05-02 2205 return -EFAULT; 7a074e96dee625 Christoph Hellwig 2018-05-02 2206 23d1d41583726b Guillem Jover 2019-08-21 2207 ret = set_compat_user_sigmask(compat_ptr(ksig.sigmask), ksig.sigsetsize); ded653ccbec033 Deepa Dinamani 2018-09-19 2208 if (ret) ded653ccbec033 Deepa Dinamani 2018-09-19 2209 return ret; 7a074e96dee625 Christoph Hellwig 2018-05-02 2210 7a074e96dee625 Christoph Hellwig 2018-05-02 2211 ret = do_io_getevents(ctx_id, min_nr, nr, events, timeout ? &t : NULL); 97abc889ee296f Oleg Nesterov 2019-06-28 2212 97abc889ee296f Oleg Nesterov 2019-06-28 2213 interrupted = signal_pending(current); b772434be0891e Oleg Nesterov 2019-07-16 2214 restore_saved_sigmask_unless(interrupted); 97abc889ee296f Oleg Nesterov 2019-06-28 2215 if (interrupted && !ret) 7a074e96dee625 Christoph Hellwig 2018-05-02 2216 ret = -ERESTARTNOHAND; 7a074e96dee625 Christoph Hellwig 2018-05-02 2217 7a074e96dee625 Christoph Hellwig 2018-05-02 2218 return ret; 7a074e96dee625 Christoph Hellwig 2018-05-02 2219 } 7a074e96dee625 Christoph Hellwig 2018-05-02 2220 :::::: The code at line 2196 was first introduced by commit :::::: 7a074e96dee62586c935c80cecd931431bfdd0be aio: implement io_pgetevents :::::: TO: Christoph Hellwig <hch@xxxxxx> :::::: CC: Christoph Hellwig <hch@xxxxxx> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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