I was using linux 3.14 where we had many kernel modules loaded and working fine. I applied some official patches fixing some vulnerabilities, to my existing kernel, after that the previous loadable module is failing to load.
I am getting kernel exception and going to KGDB, without any error message on the console.
logs:
bash# /sbin/insmod -f [module file]
[ 1028.720605] KGDB: Waiting for remote debugger
STACK DUMP
[ 158.670810] [<ffffffffb8c6e7ed>] dump_stack+0x45/0x56
[ 158.732379] [<ffffffffb88ae189>] kgdb_handle_exception+0x3f/0x4d
[ 158.805404] [<ffffffffb882c164>] __kgdb_notify+0xda/0xeb
[ 158.870089] [<ffffffffb882c198>] kgdb_notify+0x23/0x44
[ 158.932695] [<ffffffffb8c76073>] notifier_call_chain+0x39/0x5c
[ 159.003632] [<ffffffffb8c760b8>] atomic_notifier_call_chain+0x13/0x15
[ 159.081862] [<ffffffffb8c760f3>] notify_die+0x39/0x40
[ 159.143426] [<ffffffffb8802c14>] do_invalid_op+0x6e/0xdb
[ 159.208114] [<ffffffffb8808254>] ? apply_alternatives+0x7d/0x455
[ 159.281136] [<ffffffffb88ed937>] ? zone_statistics+0x71/0x78
[ 159.349991] [<ffffffffb8a25f97>] ? trace_hardirqs_off_thunk+0x3a/0x6c
[ 159.428221] [<ffffffffb8c73130>] ? irq_return+0xa/0xa
[ 159.489781] [<ffffffffb8c7af65>] invalid_op+0x15/0x20
[ 159.551345] [<ffffffffb8808254>] ? apply_alternatives+0x7d/0x455
[ 159.624371] [<ffffffffb889340d>] ? each_symbol_section.part.10+0x17e/0x1ba
[ 159.707811] [<ffffffffb8892243>] ? cmp_name+0xd/0xf
[ 159.767290] [<ffffffffb8a2941a>] ? bsearch+0x4b/0x7b
[ 159.827812] [<ffffffffb8892236>] ? unregister_module_notifier+0x15/0x15
[ 159.908124] [<ffffffffb889239b>] ? find_symbol_in_section+0x36/0xdc
[ 159.984270] [<ffffffffb8892365>] ? mod_find_symname+0x60/0x60
[ 160.054167] [<ffffffffb889346a>] ? each_symbol_section+0x21/0x44
[ 160.127188] [<ffffffffb8a263fc>] ? sort+0x113/0x1aa
[ 160.186669] [<ffffffffb882b860>] module_finalize+0xb8/0xf9
[ 160.253441] [<ffffffffb8894e55>] load_module+0x1335/0x1ca2
[ 160.320212] [<ffffffffb8892c6a>] ? copy_module_from_fd+0x9c/0xfc
[ 160.393237] [<ffffffffb88b5269>] ? rb_commit+0x7e/0x85
[ 160.455847] [<ffffffffb88958b8>] SyS_finit_module+0x59/0x66
[ 160.523664] [<ffffffffb88958b8>] ? SyS_finit_module+0x59/0x66
[ 160.593562] [<ffffffffb8c7b6c8>] ia32_do_call+0x1f/0x1f
Thanks in advance,
load_moduleplus immediatemodule_finalizesuggests that the module's initialization function have return an error. But without viewing the code we can only guess... [That means, you need to add your code into the question for make it answerable. It is a rule of Stack Overflow.] – Tsyvarev