> Why not just build the driver into the kernel?
Deliver it as a module when it all works.
I think that it is more simple to rebuild, reload, test only kernel
module than
rebuild whole kernel, reboot and test.
Hello,
how to display kernel symbol list and other details from /dev/ksyms ?
Does exist command line utility for this purpose ?
Peter
Hello,
How can I retrieve kernel module's addresses of .text .data .bss
sections from crash dump in gdb ?
Peter
On 27-Mar-25 10:22 AM, Paul Goyette wrote:
See src/sys/kern/subr_kobj.c (kern_module.c which calls some of
the kobj routines.)
I looked on it. If I want to retrieve .text module base address I found that
modctl() is able to provide .text base address of kernel module to
userspace and utility m
Hello,
I found that global variable of type kmutex_t is on many places defined
like:
kmutex_t variable_name __cacheline_aligned;
Two questions,
1. Is __cacheline_aligned mandatory for global/static variables of type
kmutex in kernel space ?
2. Regarding to alignment what are requirements for k
Update:
When I use address from gdb bt output:
...
#4 0x8023c185 in trap (frame=0xb80384d5ae90) at /usr/src/
sys/arch/amd64/amd64/trap.c:326
...
and display content of memory then I can find error 2 and trap number 6
in down of output below. In accordance with struct trapframe for
Update:
When I use address from gdb bt output:
...
#4 0x8023c185 in trap (frame=0xb80384d5ae90) at /usr/src/
sys/arch/amd64/amd64/trap.c:326
...
and display content of memory then I can find error 2 and trap number 6
in down of output below. In accordance with struct trapframe for
Hello,
I am trying to analyze crash in kernel module. I already know C code
line which is reason of crash but I am not able to find how to switch to
stack which made trap like it is displayed in /var/log/message
(mutex_enter()...) for investigating it's local argument.
If I understand good I
Hello,
I am calling ioctl() with control code created with __IOWR() macro and
third argument contains address of user-mode structure.
When module's d_ioctl() returns non-zero value then user-mode ioctl()
returns always -1 and structure in user mode does not contain data
filled by module.
Are
Hello,
I am trying to read MAC address of network interface in kernel from
member of struct ifnet:
struct ifaddr *if_hwdl;
When I try to cycle through interfaces and I read first member of
if_hwdl (struct sockaddr *ifa_addr) the result for ethernet is:
sa_family: 18, sa_len: 17,
sa_data:
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