|
I am analyzing the kdump in latest crash utility 8.0.4++.
I think I loaded the module symbols correctly :
crash> mod
MODULE NAME TEXT_BASE SIZE OBJECT FILE
ffff80007a7e2040 npdereference ffff80007a7e0000 12288 (not loaded) [CONFIG_KALLSYMS]
crash>
crash> mod -s npdereference /home/naveen/.repos/src/arm64/linux/drivers/naveen/npdereference.ko
MODULE NAME TEXT_BASE SIZE OBJECT FILE
ffff80007a7e2040 npdereference ffff80007a7e0000 12288 /home/naveen/.repos/src/arm64/linux/drivers/naveen/npdereference.ko
But still my backtrace doesn't say the correct symbol name :
#12 [ffff800082c6ba60] _MODULE_INIT_TEXT_START_npdereference at ffff80007a7e602c [npdereference]
The module name is "npdereference.ko" and the function where the crash is done looks like below. So I expect "null_deref_module_init" to be present instead of "_MODULE_INIT_TEXT_START_npdereference" : static int __init null_deref_module_init(void) {
// Pointer to an integer, initialized to NULL
int *null_pointer = NULL;
printk(KERN_INFO "Null dereference module loaded\n");
// Dereferencing the NULL pointer to trigger a crash
printk(KERN_INFO "Triggering null pointer dereference...\n");
*null_pointer = 1; // This line will cause a null pointer dereference
return 0; // This will never be reached
}
The "sym" command also doesn't point me to the source file : crash> sym ffff80007a7e602c
ffff80007a7e602c (m) _MODULE_INIT_TEXT_START_npdereference+44 [npdereference]
crash>
Is there a way to make this work correctly. The kernel module here is called "npdereference.ko" and is in-tree (part of kernel source repo). Regards,
Naveen
|
-- Crash-utility mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxxxxxx https://${domain_name}/admin/lists/devel.lists.crash-utility.osci.io/ Contribution Guidelines: https://github.com/crash-utility/crash/wiki
