Messages in this thread | | | Date | Fri, 16 Sep 2016 23:57:13 +0800 | From | kbuild test robot <> | Subject | Re: [PATCH 1/7] Apply transparent_union attribute to union semun |
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Hi Jonas,
[auto build test WARNING on linus/master] [also build test WARNING on v4.8-rc6 next-20160916] [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] [Suggest to use git(>=2.9.0) format-patch --base=<commit> (or --base=auto for convenience) to record what (public, well-known) commit your patch series was built on] [Check https://git-scm.com/docs/git-format-patch for more information]
url: https://github.com/0day-ci/linux/commits/Stafford-Horne/openrisc-Misc-fixes-from-backlog/20160916-230114 config: x86_64-randconfig-x011-09161116 (attached as .config) compiler: gcc-6 (Debian 6.2.0-3) 6.2.0 20160901 reproduce: # save the attached .config to linux build tree make ARCH=x86_64
All warnings (new ones prefixed by >>):
In file included from include/linux/sem.h:7:0, from include/linux/sched.h:35, from include/linux/utsname.h:5, from init/version.c:12: >> include/uapi/linux/sem.h:45:7: warning: union cannot be made transparent union semun { ^~~~~ -- In file included from include/linux/sem.h:7:0, from include/linux/sched.h:35, from include/linux/kasan.h:4, from kernel/sched/core.c:29: >> include/uapi/linux/sem.h:45:7: warning: union cannot be made transparent union semun { ^~~~~ In file included from include/linux/perf_event.h:47:0, from kernel/sched/core.c:42: include/linux/ftrace.h: In function 'preempt_schedule_common': include/linux/ftrace.h:703:36: warning: calling '__builtin_return_address' with a nonzero argument is unsafe [-Wframe-address] # define ftrace_return_address(n) __builtin_return_address(n) ^~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/ftrace.h:710:38: note: in expansion of macro 'ftrace_return_address' #define CALLER_ADDR1 ((unsigned long)ftrace_return_address(1)) ^~~~~~~~~~~~~~~~~~~~~ include/linux/ftrace.h:723:9: note: in expansion of macro 'CALLER_ADDR1' addr = CALLER_ADDR1; ^~~~~~~~~~~~ include/linux/ftrace.h:703:36: warning: calling '__builtin_return_address' with a nonzero argument is unsafe [-Wframe-address] # define ftrace_return_address(n) __builtin_return_address(n) ^~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/ftrace.h:711:38: note: in expansion of macro 'ftrace_return_address' #define CALLER_ADDR2 ((unsigned long)ftrace_return_address(2)) ^~~~~~~~~~~~~~~~~~~~~ include/linux/ftrace.h:726:9: note: in expansion of macro 'CALLER_ADDR2' return CALLER_ADDR2; ^~~~~~~~~~~~ include/linux/ftrace.h: In function 'preempt_count_add': include/linux/ftrace.h:703:36: warning: calling '__builtin_return_address' with a nonzero argument is unsafe [-Wframe-address] # define ftrace_return_address(n) __builtin_return_address(n) ^~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/ftrace.h:710:38: note: in expansion of macro 'ftrace_return_address' #define CALLER_ADDR1 ((unsigned long)ftrace_return_address(1)) ^~~~~~~~~~~~~~~~~~~~~ include/linux/ftrace.h:723:9: note: in expansion of macro 'CALLER_ADDR1' addr = CALLER_ADDR1; ^~~~~~~~~~~~ include/linux/ftrace.h:703:36: warning: calling '__builtin_return_address' with a nonzero argument is unsafe [-Wframe-address] # define ftrace_return_address(n) __builtin_return_address(n) ^~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/ftrace.h:711:38: note: in expansion of macro 'ftrace_return_address' #define CALLER_ADDR2 ((unsigned long)ftrace_return_address(2)) ^~~~~~~~~~~~~~~~~~~~~ include/linux/ftrace.h:726:9: note: in expansion of macro 'CALLER_ADDR2' return CALLER_ADDR2; ^~~~~~~~~~~~ include/linux/ftrace.h: In function 'preempt_schedule_notrace': include/linux/ftrace.h:703:36: warning: calling '__builtin_return_address' with a nonzero argument is unsafe [-Wframe-address] # define ftrace_return_address(n) __builtin_return_address(n) ^~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/ftrace.h:710:38: note: in expansion of macro 'ftrace_return_address' #define CALLER_ADDR1 ((unsigned long)ftrace_return_address(1)) ^~~~~~~~~~~~~~~~~~~~~ include/linux/ftrace.h:723:9: note: in expansion of macro 'CALLER_ADDR1' addr = CALLER_ADDR1; ^~~~~~~~~~~~ include/linux/ftrace.h:703:36: warning: calling '__builtin_return_address' with a nonzero argument is unsafe [-Wframe-address] # define ftrace_return_address(n) __builtin_return_address(n) ^~~~~~~~~~~~~~~~~~~~~~~~~~~ include/linux/ftrace.h:711:38: note: in expansion of macro 'ftrace_return_address' #define CALLER_ADDR2 ((unsigned long)ftrace_return_address(2)) ^~~~~~~~~~~~~~~~~~~~~ include/linux/ftrace.h:726:9: note: in expansion of macro 'CALLER_ADDR2' return CALLER_ADDR2; ^~~~~~~~~~~~
vim +45 include/uapi/linux/sem.h
607ca46e David Howells 2012-10-13 29 struct sem_queue **sem_pending_last; /* last pending operation */ 607ca46e David Howells 2012-10-13 30 struct sem_undo *undo; /* undo requests on this array */ 607ca46e David Howells 2012-10-13 31 unsigned short sem_nsems; /* no. of semaphores in array */ 607ca46e David Howells 2012-10-13 32 }; 607ca46e David Howells 2012-10-13 33 607ca46e David Howells 2012-10-13 34 /* Include the definition of semid64_ds */ 607ca46e David Howells 2012-10-13 35 #include <asm/sembuf.h> 607ca46e David Howells 2012-10-13 36 607ca46e David Howells 2012-10-13 37 /* semop system calls takes an array of these. */ 607ca46e David Howells 2012-10-13 38 struct sembuf { 607ca46e David Howells 2012-10-13 39 unsigned short sem_num; /* semaphore index in array */ 607ca46e David Howells 2012-10-13 40 short sem_op; /* semaphore operation */ 607ca46e David Howells 2012-10-13 41 short sem_flg; /* operation flags */ 607ca46e David Howells 2012-10-13 42 }; 607ca46e David Howells 2012-10-13 43 607ca46e David Howells 2012-10-13 44 /* arg for semctl system calls. */ 607ca46e David Howells 2012-10-13 @45 union semun { 607ca46e David Howells 2012-10-13 46 int val; /* value for SETVAL */ 607ca46e David Howells 2012-10-13 47 struct semid_ds __user *buf; /* buffer for IPC_STAT & IPC_SET */ 607ca46e David Howells 2012-10-13 48 unsigned short __user *array; /* array for GETALL & SETALL */ 607ca46e David Howells 2012-10-13 49 struct seminfo __user *__buf; /* buffer for IPC_INFO */ 607ca46e David Howells 2012-10-13 50 void __user *__pad; 46f40460 Jonas Bonn 2016-09-16 51 } __attribute__ ((transparent_union)); 607ca46e David Howells 2012-10-13 52 607ca46e David Howells 2012-10-13 53 struct seminfo {
:::::: The code at line 45 was first introduced by commit :::::: 607ca46e97a1b6594b29647d98a32d545c24bdff UAPI: (Scripted) Disintegrate include/linux
:::::: TO: David Howells <dhowells@redhat.com> :::::: CC: David Howells <dhowells@redhat.com>
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