CVSROOT: /cvs
Module name: src
Changes by: kette...@cvs.openbsd.org 2023/01/13 16:02:44
Modified files:
sys/kern : kern_exec.c exec_elf.c
sys/uvm : uvm_unix.c
Log message:
Since the signal trampoline is now execute-only we no longer write it
into core dumps. As a result backtraces through signal handlers no
longer work in gdb and other debuggers.
Fix this by keeping a read-only mapping of the signal trampoline in the
kernel and writing it into the core dump at the virtual address where it
is mapped in the process.
ok deraadt@, tb@
