One of the original concern is still unanswered. I understood the bakctrace is expected to
have " _MODULE_INIT_TEXT_START_" because compiler re-arranged code for the init
function. However, the sym doesn't point us to the source file. Is that also
expected?
#12 [ffff800082c1ba60] _MODULE_INIT_TEXT_START_npdereference at ffff80007a7e602c
[npdereference]
#13 [ffff800082c1bac0] do_one_initcall at ffff800080014db0
#14 [ffff800082c1baf0] do_init_module at ffff80008011ee14
#15 [ffff800082c1bc30] load_module at ffff800080120ed8
crash> sym ffff80007a7e602c
ffff80007a7e602c (m) _MODULE_INIT_TEXT_START_npdereference+44 [npdereference]
crash> sym null_deref_module_exit
Is this expected?