[PATCH] D106056: [CVP] processSwitch: Remove default case when switch cover all possible values.

[Nathan Chancellor via Phabricator via llvm-commits]

nathanchance added a comment.

I do not think that is the issue here. Adding `-mllvm -trap-unreachable` to the kernel's build flags does not silence `objtool` nor allows the kernel to boot. I switched over to `CONFIG_UNWINDER_FRAME_POINTER` instead of `CONFIG_UNWINDER_ORC` so `objtool` should only be running checks, not doing any sort of binary modifications, and I see the same warning. If the warning is not valid, then I can bring that up to the tool's author but it seems valid, given that it is pointing to the exact function that @junparser already identified as problematic.

  + tools/objtool/objtool check --duplicate --vmlinux --no-unreachable --retpoline --uaccess vmlinux.o
  vmlinux.o: warning: objtool: cfg80211_edmg_chandef_valid()+0x16e: can't find jump dest instruction at .text.cfg80211_edmg_chandef_valid+0x180


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https://reviews.llvm.org/D106056