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IABSD.fr/src/sys

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  • Author : mpi
    Date : 2025-02-17 13:28:26
    Hash : c05afcd0
    Message : Disable pagefault handling when unwinding userland stack. When collecting userland stacktraces with dt(4), the probe may run in an interrupt routine at IPL_VM or higher. Resolving pagefaults in this case might result in panic or corrupt UVM data structures. Userland stack frames cannot be trusted, a bogus frame pointer may force us into a page fault. From Christian Ludwig, ok kettenis@