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Check Point appliance with SAM card might crash when accessing the /dev/tilegxpci*/boot
Symptoms
  • Check Point appliance with SAM card randomly rebooted itself and vmcore file was created (per sk44186).

  • VMcore file contained the following function stack:

    #0 [...] machine_kexec at ...
    #1 [...] crash_kexec at ...
    #2 [...] kdb_main_loop at ...
    #3 [...] kdba_main_loop at ...
    #4 [...] kdb at ...
    #5 [...] kdba_entry at ...
    #6 [...] notifier_call_chain at ...
    #7 [...] __die at ...
    #8 [...] die at ...
    #9 [...] do_invalid_op at ...
    #10 [...] error_exit at ...
        [exception RIP: pci_disable_msi+...]
        ... ... ...
    #11 [...] pci_disable_msi(...) at msi.c
    #12 [...] [adpmod] tlr_generic_open(...) at tilegxpci_host.c
    #13 [...] chrdev_open(...) at char_dev.c
    #14 [...] __dentry_open(...) at open.c
    #15 [...] do_filp_open(...) at open.c
    #16 [...] do_sys_open(...) at open.c
    #17 [...] sysenter_do_call() at ...
        ... ... ...
    
Cause

Check Point appliance with SAM card might crash in specific scenario when accessing the /dev/tilegxpci*/boot for reading or writing.


Solution
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