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Skuhra" To: Konstantin Belousov Cc: mchoo@freebsd.org, src-committers@freebsd.org, dev-commits-src-all@freebsd.org, dev-commits-src-main@freebsd.org Subject: Re: git: 64a73d1b6dc9 - main - amd64/*sigtramp.S: re-enable some cfi annotations for special registers In-Reply-To: References: <6ab176f0.41de0.58f3c642@gitrepo.freebsd.org> <87zex8ctb1.wl-herbert@gojira.at> User-Agent: Wanderlust/2.15.9 (Almost Unreal) Emacs/32.0 Mule/6.0 List-Id: Commit messages for the main branch of the src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-main List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-main@freebsd.org Sender: owner-dev-commits-src-main@FreeBSD.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Content-Type: text/plain; charset=US-ASCII X-Spamd-Bar: / X-Spamd-Result: default: False [0.00 / 15.00]; MID_CONTAINS_FROM(1.00)[]; DMARC_POLICY_ALLOW(-0.50)[gojira.at,reject]; R_DKIM_ALLOW(-0.20)[gojira.at:s=fm1,messagingengine.com:s=fm1]; R_SPF_ALLOW(-0.20)[+ip4:103.168.172.128/27:c]; MIME_GOOD(-0.10)[text/plain]; ARC_NA(0.00)[]; TO_DN_SOME(0.00)[]; MIME_TRACE(0.00)[0:+]; RCVD_VIA_SMTP_AUTH(0.00)[]; DWL_DNSWL_NONE(0.00)[messagingengine.com:dkim]; ASN(0.00)[asn:151847, ipnet:103.168.172.0/24, country:AU]; MLMMJ_DEST(0.00)[dev-commits-src-all@freebsd.org,dev-commits-src-main@freebsd.org]; RCVD_COUNT_THREE(0.00)[3]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_FIVE(0.00)[5]; FROM_EQ_ENVFROM(0.00)[]; RCVD_TLS_LAST(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; DKIM_TRACE(0.00)[gojira.at:+,messagingengine.com:+] X-Rspamd-Queue-Id: 4hqVRY3rPyz4cmj On Wed, 23 Sep 2026 10:17:37 +0200, Konstantin Belousov wrote: > > On Wed, Sep 23, 2026 at 09:37:06AM +0200, Herbert J. Skuhra wrote: > > On Mon, 21 Sep 2026 20:26:56 +0200, Konstantin Belousov wrote: > > > > > > The branch main has been updated by kib: > > > > > > URL: https://cgit.FreeBSD.org/src/commit/?id=64a73d1b6dc93d92daea1e2d0603fda1dddadf4a > > > > > > commit 64a73d1b6dc93d92daea1e2d0603fda1dddadf4a > > > Author: Konstantin Belousov > > > AuthorDate: 2026-09-19 09:46:19 +0000 > > > Commit: Konstantin Belousov > > > CommitDate: 2026-09-21 18:25:38 +0000 > > > > > > amd64/*sigtramp.S: re-enable some cfi annotations for special registers > > > > > > Also explicitly specify .cfi_sections to emit the cfi bytecode into the > > > loadable .eh_frame section. > > > > > > Reviewed by: mchoo > > > Sponsored by: The FreeBSD Foundation > > > MFC after: 1 week > > > Differential revision: https://reviews.freebsd.org/D59838 > > > --- > > > sys/amd64/amd64/sigtramp.S | 44 ++++++++++++++++++++++++++---------------- > > > sys/amd64/ia32/ia32_sigtramp.S | 19 ++++++++++++------ > > > 2 files changed, 40 insertions(+), 23 deletions(-) > > > > After this commit I get: > > > > Sep 23 09:18:52 srv01 kernel: pid 79694 (tmux), jid 0, uid 1001: exited on signal 11 (core dumped) > > Sep 23 09:18:56 srv01 sshd-session[78306]: error: mm_reap: child terminated by signal 11 > > Sep 23 09:18:57 srv01 kernel: pid 78765 (sshd-session), jid 0, uid 1001: exited on signal 11 (no core dump - sugid process denied by kern.sugid_coredump) > > Sep 23 09:18:57 srv01 kernel: pid 70073 (sshd), jid 0, uid 0: exited on signal 11 (no core dump - sugid process denied by kern.sugid_coredump) > > > > This is a (K)VM. > > How did you determined that the commit is the problem? > The change you cited did not modified a single executable instruction. 1. git bisect 2. Running main-n289555-c7b67985633c with 64a73d1b6dc9 reverted resolves the issue (no more core dumps).