forked from Minki/linux
c317d306d5
The function try_to_clear_window_buffer is only called from rtrap_32.c. After it is called the signal pending state is retested, and signals are handled if TIF_SIGPENDING is set. This allows try_to_clear_window_buffer to call force_fatal_signal and then rely on the signal being delivered to kill the process, without any danger of returning to userspace, or otherwise using possible corrupt state on failure. The functional difference between force_fatal_sig and do_exit is that do_exit will only terminate a single thread, and will never trigger a core-dump. A multi-threaded program for which a single thread terminates unexpectedly is hard to reason about. Calling force_fatal_sig does not give userspace a chance to catch the signal, but otherwise is an ordinary fatal signal exit, and it will trigger a coredump of the offending process if core dumps are enabled. Cc: David Miller <davem@davemloft.net> Cc: sparclinux@vger.kernel.org Link: https://lkml.kernel.org/r/20211020174406.17889-15-ebiederm@xmission.com Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> |
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| .. | ||
| boot | ||
| configs | ||
| crypto | ||
| include | ||
| kernel | ||
| lib | ||
| math-emu | ||
| mm | ||
| net | ||
| power | ||
| prom | ||
| vdso | ||
| Kbuild | ||
| Kconfig | ||
| Kconfig.debug | ||
| Makefile | ||