[peterz-queue:sched/wip.freezer 3/7] include/linux/ptrace.h:220:4: error: call to undeclared function 'task_set_jobctl_pending'; ISO C99 and later do not support implicit function declarations

From: kernel test robot
Date: Thu Apr 28 2022 - 23:07:58 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git sched/wip.freezer
head: a1b437cfec0d2b0060cf85538c2379c74fb63ad5
commit: 4cb4f3dc01c45f8a1621f13b55705ba4a6844081 [3/7] sched,signal,ptrace: Rework TASK_TRACED, TASK_STOPPED state
config: s390-randconfig-r044-20220428 (https://download.01.org/0day-ci/archive/20220429/202204291101.AE4DJ2gY-lkp@xxxxxxxxx/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project c59473aacce38cd7dd77eebceaf3c98c5707ab3b)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install s390 cross compiling tool for clang build
# apt-get install binutils-s390x-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git/commit/?id=4cb4f3dc01c45f8a1621f13b55705ba4a6844081
git remote add peterz-queue https://git.kernel.org/pub/scm/linux/kernel/git/peterz/queue.git
git fetch --no-tags peterz-queue sched/wip.freezer
git checkout 4cb4f3dc01c45f8a1621f13b55705ba4a6844081
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 prepare

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All errors (new ones prefixed by >>):

In file included from include/linux/module.h:19:
In file included from include/linux/elf.h:6:
In file included from arch/s390/include/asm/elf.h:160:
include/linux/compat.h:425:10: warning: array index 7 is past the end of the array (which contains 2 elements) [-Warray-bounds]
case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3];
^ ~
include/linux/compat.h:131:2: note: array 'sig' declared here
compat_sigset_word sig[_COMPAT_NSIG_WORDS];
^
include/linux/compat.h:425:42: warning: array index 6 is past the end of the array (which contains 2 elements) [-Warray-bounds]
case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3];
^ ~
include/linux/compat.h:131:2: note: array 'sig' declared here
compat_sigset_word sig[_COMPAT_NSIG_WORDS];
^
include/linux/compat.h:425:53: warning: array index 3 is past the end of the array (which contains 1 element) [-Warray-bounds]
case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3];
^ ~
arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here
unsigned long sig[_NSIG_WORDS];
^
In file included from arch/s390/kernel/asm-offsets.c:11:
In file included from include/linux/kvm_host.h:32:
In file included from include/linux/ftrace.h:13:
In file included from include/linux/kallsyms.h:14:
In file included from include/linux/module.h:19:
In file included from include/linux/elf.h:6:
In file included from arch/s390/include/asm/elf.h:160:
include/linux/compat.h:427:22: warning: array index 2 is past the end of the array (which contains 1 element) [-Warray-bounds]
case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2];
^ ~
arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here
unsigned long sig[_NSIG_WORDS];
^
In file included from arch/s390/kernel/asm-offsets.c:11:
In file included from include/linux/kvm_host.h:32:
In file included from include/linux/ftrace.h:13:
In file included from include/linux/kallsyms.h:14:
In file included from include/linux/module.h:19:
In file included from include/linux/elf.h:6:
In file included from arch/s390/include/asm/elf.h:160:
include/linux/compat.h:427:10: warning: array index 5 is past the end of the array (which contains 2 elements) [-Warray-bounds]
case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2];
^ ~
include/linux/compat.h:131:2: note: array 'sig' declared here
compat_sigset_word sig[_COMPAT_NSIG_WORDS];
^
include/linux/compat.h:427:42: warning: array index 4 is past the end of the array (which contains 2 elements) [-Warray-bounds]
case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2];
^ ~
include/linux/compat.h:131:2: note: array 'sig' declared here
compat_sigset_word sig[_COMPAT_NSIG_WORDS];
^
include/linux/compat.h:427:53: warning: array index 2 is past the end of the array (which contains 1 element) [-Warray-bounds]
case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2];
^ ~
arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here
unsigned long sig[_NSIG_WORDS];
^
In file included from arch/s390/kernel/asm-offsets.c:11:
In file included from include/linux/kvm_host.h:32:
In file included from include/linux/ftrace.h:13:
In file included from include/linux/kallsyms.h:14:
In file included from include/linux/module.h:19:
In file included from include/linux/elf.h:6:
In file included from arch/s390/include/asm/elf.h:160:
include/linux/compat.h:429:22: warning: array index 1 is past the end of the array (which contains 1 element) [-Warray-bounds]
case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1];
^ ~
arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here
unsigned long sig[_NSIG_WORDS];
^
In file included from arch/s390/kernel/asm-offsets.c:11:
In file included from include/linux/kvm_host.h:32:
In file included from include/linux/ftrace.h:13:
In file included from include/linux/kallsyms.h:14:
In file included from include/linux/module.h:19:
In file included from include/linux/elf.h:6:
In file included from arch/s390/include/asm/elf.h:160:
include/linux/compat.h:429:10: warning: array index 3 is past the end of the array (which contains 2 elements) [-Warray-bounds]
case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1];
^ ~
include/linux/compat.h:131:2: note: array 'sig' declared here
compat_sigset_word sig[_COMPAT_NSIG_WORDS];
^
include/linux/compat.h:429:42: warning: array index 2 is past the end of the array (which contains 2 elements) [-Warray-bounds]
case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1];
^ ~
include/linux/compat.h:131:2: note: array 'sig' declared here
compat_sigset_word sig[_COMPAT_NSIG_WORDS];
^
include/linux/compat.h:429:53: warning: array index 1 is past the end of the array (which contains 1 element) [-Warray-bounds]
case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1];
^ ~
arch/s390/include/asm/signal.h:22:9: note: array 'sig' declared here
unsigned long sig[_NSIG_WORDS];
^
In file included from arch/s390/kernel/asm-offsets.c:11:
In file included from include/linux/kvm_host.h:32:
In file included from include/linux/ftrace.h:16:
>> include/linux/ptrace.h:220:4: error: call to undeclared function 'task_set_jobctl_pending'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
task_set_jobctl_pending(child, JOBCTL_TRAP_STOP);
^
include/linux/ptrace.h:220:4: note: did you mean 'task_clear_jobctl_pending'?
include/linux/sched/jobctl.h:43:13: note: 'task_clear_jobctl_pending' declared here
extern void task_clear_jobctl_pending(struct task_struct *task, unsigned long mask);
^
In file included from arch/s390/kernel/asm-offsets.c:11:
In file included from include/linux/kvm_host.h:41:
In file included from include/linux/kvm_para.h:5:
In file included from include/uapi/linux/kvm_para.h:37:
In file included from arch/s390/include/asm/kvm_para.h:25:
In file included from arch/s390/include/asm/diag.h:12:
In file included from include/linux/if_ether.h:19:
In file included from include/linux/skbuff.h:31:
In file included from include/linux/dma-mapping.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
#define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
#define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
^
In file included from arch/s390/kernel/asm-offsets.c:11:
In file included from include/linux/kvm_host.h:41:
In file included from include/linux/kvm_para.h:5:
In file included from include/uapi/linux/kvm_para.h:37:
In file included from arch/s390/include/asm/kvm_para.h:25:
In file included from arch/s390/include/asm/diag.h:12:
In file included from include/linux/if_ether.h:19:
In file included from include/linux/skbuff.h:31:
In file included from include/linux/dma-mapping.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
#define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
#define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
^
In file included from arch/s390/kernel/asm-offsets.c:11:
In file included from include/linux/kvm_host.h:41:
In file included from include/linux/kvm_para.h:5:
In file included from include/uapi/linux/kvm_para.h:37:
In file included from arch/s390/include/asm/kvm_para.h:25:
In file included from arch/s390/include/asm/diag.h:12:
In file included from include/linux/if_ether.h:19:
In file included from include/linux/skbuff.h:31:
In file included from include/linux/dma-mapping.h:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
24 warnings and 5 errors generated.
make[2]: *** [scripts/Makefile.build:120: arch/s390/kernel/asm-offsets.s] Error 1
make[2]: Target '__build' not remade because of errors.
make[1]: *** [Makefile:1194: prepare0] Error 2
make[1]: Target 'prepare' not remade because of errors.
make: *** [Makefile:219: __sub-make] Error 2
make: Target 'prepare' not remade because of errors.

vim +/task_set_jobctl_pending +220 include/linux/ptrace.h

4e52365f279564 Matthew Dempsky 2014-06-06 196
09a05394fe2448 Roland McGrath 2008-07-25 197 /**
09a05394fe2448 Roland McGrath 2008-07-25 198 * ptrace_init_task - initialize ptrace state for a new child
09a05394fe2448 Roland McGrath 2008-07-25 199 * @child: new child task
09a05394fe2448 Roland McGrath 2008-07-25 200 * @ptrace: true if child should be ptrace'd by parent's tracer
09a05394fe2448 Roland McGrath 2008-07-25 201 *
09a05394fe2448 Roland McGrath 2008-07-25 202 * This is called immediately after adding @child to its parent's children
09a05394fe2448 Roland McGrath 2008-07-25 203 * list. @ptrace is false in the normal case, and true to ptrace @child.
09a05394fe2448 Roland McGrath 2008-07-25 204 *
09a05394fe2448 Roland McGrath 2008-07-25 205 * Called with current's siglock and write_lock_irq(&tasklist_lock) held.
09a05394fe2448 Roland McGrath 2008-07-25 206 */
09a05394fe2448 Roland McGrath 2008-07-25 207 static inline void ptrace_init_task(struct task_struct *child, bool ptrace)
09a05394fe2448 Roland McGrath 2008-07-25 208 {
09a05394fe2448 Roland McGrath 2008-07-25 209 INIT_LIST_HEAD(&child->ptrace_entry);
09a05394fe2448 Roland McGrath 2008-07-25 210 INIT_LIST_HEAD(&child->ptraced);
6634ae1033ceae Oleg Nesterov 2011-07-08 211 child->jobctl = 0;
09a05394fe2448 Roland McGrath 2008-07-25 212 child->ptrace = 0;
6634ae1033ceae Oleg Nesterov 2011-07-08 213 child->parent = child->real_parent;
6634ae1033ceae Oleg Nesterov 2011-07-08 214
6634ae1033ceae Oleg Nesterov 2011-07-08 215 if (unlikely(ptrace) && current->ptrace) {
09a05394fe2448 Roland McGrath 2008-07-25 216 child->ptrace = current->ptrace;
c70d9d809fdeec Eric W. Biederman 2017-05-22 217 __ptrace_link(child, current->parent, current->ptracer_cred);
dcace06cc29df9 Oleg Nesterov 2011-07-08 218
d184d6eb1dc3c9 Oleg Nesterov 2011-07-08 219 if (child->ptrace & PT_SEIZED)
d184d6eb1dc3c9 Oleg Nesterov 2011-07-08 @220 task_set_jobctl_pending(child, JOBCTL_TRAP_STOP);
d184d6eb1dc3c9 Oleg Nesterov 2011-07-08 221 else
dcace06cc29df9 Oleg Nesterov 2011-07-08 222 sigaddset(&child->pending.signal, SIGSTOP);
09a05394fe2448 Roland McGrath 2008-07-25 223 }
c70d9d809fdeec Eric W. Biederman 2017-05-22 224 else
c70d9d809fdeec Eric W. Biederman 2017-05-22 225 child->ptracer_cred = NULL;
09a05394fe2448 Roland McGrath 2008-07-25 226 }
09a05394fe2448 Roland McGrath 2008-07-25 227

:::::: The code at line 220 was first introduced by commit
:::::: d184d6eb1dc3c9869e25a8e422be5c55ab0db4ac ptrace: dont send SIGSTOP on auto-attach if PT_SEIZED

:::::: TO: Oleg Nesterov <oleg@xxxxxxxxxx>
:::::: CC: Oleg Nesterov <oleg@xxxxxxxxxx>

--
0-DAY CI Kernel Test Service
https://01.org/lkp

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