Date: Thu, 21 Nov 2024 22:05:59 GMT From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: e6ec41fa86d8 - main - amd64 efi rt: handle #BP Message-ID: <202411212205.4ALM5x9F072385@gitrepo.freebsd.org>
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The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=e6ec41fa86d88f80bd663e55455a6844619a9b24 commit e6ec41fa86d88f80bd663e55455a6844619a9b24 Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2024-11-21 04:57:58 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> CommitDate: 2024-11-21 22:05:28 +0000 amd64 efi rt: handle #BP PR: 282860 Reviewed by: markj Sponsored by: The FreeBSD Foundation MFC after: 1 week Differential revision: https://reviews.freebsd.org/D47694 --- sys/amd64/amd64/trap.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/sys/amd64/amd64/trap.c b/sys/amd64/amd64/trap.c index a6d6c792ee92..6ceeea41ea91 100644 --- a/sys/amd64/amd64/trap.c +++ b/sys/amd64/amd64/trap.c @@ -598,6 +598,18 @@ trap(struct trapframe *frame) * FALLTHROUGH (TRCTRAP kernel mode, kernel address) */ case T_BPTFLT: + /* + * Most likely, EFI RT hitting INT3. This + * check prevents kdb from handling + * breakpoints set on the BIOS text, if such + * option is ever needed. + */ + if ((td->td_pflags & TDP_EFIRT) != 0 && + curpcb->pcb_onfault != NULL) { + frame->tf_rip = (long)curpcb->pcb_onfault; + return; + } + /* * If KDB is enabled, let it handle the debugger trap. * Otherwise, debugger traps "can't happen".
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