System crashed while unloading 3rd party module 'cb_appc_events_4_1_2640849'

Solution Unverified - Updated -

Issue

  • System crashed with the below invalid address access issue.
...
[7711720.433574] syscall:linkat change from cb_appc_events_4_1_2640849::dynsec_linkat -> falcon_lsm_pinned_17308::unload_network_ops_symbols
[7711720.434053] may_restore_syscallsentire_tbl_chg:0 diff:15
[7711720.438615] Exiting: cb_appc_events_4_1_2640849
[7711720.451327] Unregistering dynsec LSM...
[7711720.510780] BUG: unable to handle kernel paging request at ffffffffc08edd6b
[7711720.511539] IP: [<ffffffffc08edd6b>] 0xffffffffc08edd6b
[7711720.512201] PGD a05214067 PUD a05216067 PMD ae0ab3067 PTE 0
...

Environment

  • Red Hat Enterprise Linux 7.9
  • 3rd party module cb_appc_events_4_1_2640849 loaded

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