/asm-x86/fixmap_32.h: fix_to_virt () function is used to calculate the virtual address based on the fixed_addresses constant of the fixed ing
static __always_inline unsigned long fix_to_virt(const unsigned int idx){ if(idx >= __end_of_fixed_addresses) __this_fixmap_does_not_exist(); return __fix_to_virt(idx);}
If idx is larger than the maximum possible value, an error occurs. The kernel access
The following error occurred when compiling kernel was encountered:1# patchutils isNeeded by kernel-2.6. +-431.29.2. el6.x86_642# Xmlto isNeeded by kernel-2.6. +-431.29.2. el6.x86_643# AsciiDoc isNeeded by kernel-2.6. +-431.29.2. el6.x86_644# Elfutils-libelf-devel isNeeded b
I encountered a problem when loading the device driver.
$ sudo insmod Dev_hello.koThen there is a problem:Error: could not insert module Dev_hello.ko: Invalid module formatCheck the *. Ko file vermagic and kernel version number:[lgw@localhost shareArm]$ sudo modinfo Dev_hello.ko [sudo] password for lgw: filename: /home/lgw/shareArm/Dev_hello.ko depends: vermagic: 3.5.0-2.fc17.i686 SMP mod_unload 686
lgw@localhost shareArm]$ uname -r 3.5.0-2
URL: http://blog.csdn.net/pottichu/archive/2007/11/19/1892203.aspx
Environment: VMWare + fedora8;GCC version 20070925 (Red Hat 4.1.2-33 );Kernel source is installed with a kernel-2.6.23.1-42.fc8.src.rpm;Uname-R is 2.6.23.1-42. fc8;
Problem: The driver module I wrote can be compiled normally, but the error "insmod: Error
subscribe linux-kernel [email protected] and send back [email protected](4) Get reply emailWelcome to the Linux-kernel mailing list! Congratulations, you have successfully subscribed to the Linux kernel maillist(5) Unsubscribe emailif you want to unsubscribe from the mail, please email [Email protected]content:unsubscribe linux-
An error occurred while cross-compiling the kernel ~ For more information, see Linux general technology-Linux programming and kernel. [Root @ Tim linux-2.6.29] # make
Scripts/kconfig/conf-s arch/arm/Kconfig
CHK include/linux/version. h
Make [1]: "include/asm-arm/mach-types.h" is up to date.
CHK include/linux/utsrelease. h
SYMLINK include/asm-> include/asm-ar
Nbsp; The ERR_PTR, IS_ERR, and PTR_ERR inline functions are often seen in kernel code and drivers. Many kernel functions need to return a pointer, but the function call may fail. in this case, we usually return a NULL pointer, just as malloc or kmalloc does not get the specified
We often see ERR_PTR, IS_ERR, and PTR_ERR inline functions in kernel code and drivers
Linux Study Notes: An error occurred while compiling the kernel-Linux general technology-Linux programming and kernel information. For details, refer to the following section. From 2.6.9.13 to 2.6.16, the compilation was successful, but an error occurred while restarting the computer.
Enforcing mode requested but no
Kernel: TCP: Time wait bucket table overflow error Solution
The following error is reported in the message log:
Feb 27 10:53:36 web kernel: _ ratelimit: 5 callbacks suppressed
Feb 27 10:53:36 web kernel: TCP: Time wait bucket table OverflowFeb 27 10:53:36 web
When compiling the 2.6.38 kernel, the following error occurs:
ARCH/x86/kernel/entry_32.s: assembler messages:
ARCH/x86/kernel/entry_32.s: 1422: Error:. Size expression for apf_page_fault does not evaluate to a constantMake [2]: *** [ARCH/x86/
Article title: Solve the initramfs error after Kernel upgrade. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
The following error occurs when initramfs cannot find/root/host or 43
Article Title: about pointers and error values in the Linux operating system kernel. Linux is a technology channel of the IT lab in China. Includes basic categories such as desktop applications, Linux system management, kernel research, embedded systems, and open source.
We often see ERR_PTR, IS_ERR, and PTR_ERR inline functions in
We often see ERR_PTR, IS_ERR, and PTR_ERR inline functions in kernel code and drivers.
Many kernel functions need to return a pointer, but the function call may fail. In this case, we usually return a NULL pointer, it is like the return value of malloc or kmalloc when the specified space application is not obtained. However, sometimes we want to know the cause of function failure, but returning NULL is not
Many error codes are defined in Linux, such as:-enomem,-EINTR, etc. These error codes are essentially negative integers.However, in the actual code process, the return value of some functions is pointer type, there are some integer type.For example, the following function:struct Kfifo * Kfifo_init (){struct KFIFO *kfifo;Kfifo = kmalloc (sizeof (struct kfifo), gfp_kernel);if (!KFIFO)Return-enomem;}The return
Linux kernel update error, update-initramfs: failedb Solution
Environment:
Win7 and Ubuntu dual systems.
Background and solution:
Two days ago, I found that the/home directory was full, and then I used gparted tool in Ubuntu to re-partition the system. After partitioning, the/boot and Windows 7 drive C are mounted to the same partition/sda1, therefore, an error i
During Linux kernel compilation, a warning is displayed:
Check
Clock error detected. Your creation may be incomplete.
Cause:
I paused once during kernel compilation, modified the system time, and changed the system time to the previous time, for example, the system time during kernel compilation.
It was, and I c
An error occurred while porting the uclinux2.6 kernel to B0! Help! -- Linux general technology-Linux programming and kernel information. The following is a detailed description. I use the kernel 2.6.14 and u-boot for loading. I will list the problems and my understanding during the porting of the uclinux2.6
After a shared directory is installed with the host machine in VMware work station 7.1.0, the shared directory cannot be found in/mnt/hgfs of the centos system, A problem occurred in the title when you reinstall vmtools! It took a lot of time to solve this problem and it was very bad!
Finally, get some inspiration in this article: http://www.linuxidc.com/Linux/2011-05/36337.htm
1. First confirm that the local GCC, kernel, and
An error occurred while compiling the linux kernel! -- Linux general technology-Linux programming and kernel information. The following is a detailed description. Make mrproper, make menuconfig, make dep, and then make bzImage has an error. The error message is as follows. P
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