Hi Al,
FYI, kernel build failed on
tree: git://git.kernel.org/pub/scm/linux/kernel/git/viro/signal.git for-next
head: 4fa20776ca79059c34f4660c8bdb0d7c1603e872
commit: f45a47e7f1d9668458ecd1e88b285c6348c5aa3e [79/81] x86, um: convert to saner kernel_execve() semantics
config: um-defconfig # make ARCH=um defconfig
All error/warnings:
init/main.c: In function 'run_init_process':
init/main.c:794:2: error: implicit declaration of function 'current_pt_regs' [-Werror=implicit-function-declaration]
init/main.c:794:2: warning: passing argument 4 of 'do_execve' makes pointer from integer without a cast [enabled by default]
In file included from include/linux/pid_namespace.h:4:0,
from include/linux/perf_event.h:604,
from include/linux/ftrace_event.h:8,
from include/trace/syscall.h:6,
from include/linux/syscalls.h:78,
from init/main.c:16:
include/linux/sched.h:2323:12: note: expected 'struct pt_regs *' but argument is of type 'int'
cc1: some warnings being treated as errors
--
kernel/kmod.c: In function '____call_usermodehelper':
kernel/kmod.c:221:2: error: implicit declaration of function 'current_pt_regs' [-Werror=implicit-function-declaration]
kernel/kmod.c:221:2: warning: passing argument 4 of 'do_execve' makes pointer from integer without a cast [enabled by default]
In file included from kernel/kmod.c:22:0:
include/linux/sched.h:2323:12: note: expected 'struct pt_regs *' but argument is of type 'int'
cc1: some warnings being treated as errors
vim +794 init/main.c
b99b87f7 Peter Oberparleiter 2009-06-17 778 do_ctors();
d5767c53 Linus Torvalds 2011-09-28 779 usermodehelper_enable();
b0f84374 wangyanqing 2011-09-29 780 do_initcalls();
^1da177e Linus Torvalds 2005-04-16 781 }
^1da177e Linus Torvalds 2005-04-16 782
7babe8db Eduard - Gabriel Munteanu 2008-07-25 783 static void __init do_pre_smp_initcalls(void)
c2147a50 Eduard - Gabriel Munteanu 2008-07-25 784 {
196a15b4 H Hartley Sweeten 2009-12-14 785 initcall_t *fn;
c2147a50 Eduard - Gabriel Munteanu 2008-07-25 786
026cee00 Pawel Moll 2012-03-26 787 for (fn = __initcall_start; fn < __initcall0_start; fn++)
196a15b4 H Hartley Sweeten 2009-12-14 788 do_one_initcall(*fn);
c2147a50 Eduard - Gabriel Munteanu 2008-07-25 789 }
c2147a50 Eduard - Gabriel Munteanu 2008-07-25 790
7c2b93d4 Al Viro 2012-10-10 791 static int run_init_process(const char *init_filename)
^1da177e Linus Torvalds 2005-04-16 792 {
^1da177e Linus Torvalds 2005-04-16 793 argv_init[0] = init_filename;
7c2b93d4 Al Viro 2012-10-10 @794 return kernel_execve(init_filename, argv_init, envp_init);
^1da177e Linus Torvalds 2005-04-16 795 }
^1da177e Linus Torvalds 2005-04-16 796
d6b21238 Al Viro 2012-10-10 797 static void __init kernel_init_freeable(void);
d6b21238 Al Viro 2012-10-10 798
d6b21238 Al Viro 2012-10-10 799 static int __ref kernel_init(void *unused)
ee5bfa64 Vivek Goyal 2007-02-13 800 {
d6b21238 Al Viro 2012-10-10 801 kernel_init_freeable();
22a9d645 Arjan van de Ven 2009-01-07 802 /* need to finish all async __init code before freeing the memory */
The code at line 794 was first introduced by commit:
7c2b93d infrastructure for saner ret_from_kernel_thread semantics
---
0-DAY kernel build testing backend Open Source Technology Center
Fengguang Wu, Yuanhan Liu Intel Corporation
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