Date: Wed, 20 Oct 2021 16:01:01 GMT From: Brooks Davis <brooks@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 2f022558ce3d - stable/12 - selsocket: handle sopoll() errors correctly Message-ID: <202110201601.19KG115r066973@gitrepo.freebsd.org>
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The branch stable/12 has been updated by brooks: URL: https://cgit.FreeBSD.org/src/commit/?id=2f022558ce3d00eb53fd235dd87db780acd9bc25 commit 2f022558ce3d00eb53fd235dd87db780acd9bc25 Author: Brooks Davis <brooks@FreeBSD.org> AuthorDate: 2021-10-20 16:00:38 +0000 Commit: Brooks Davis <brooks@FreeBSD.org> CommitDate: 2021-10-20 16:00:38 +0000 selsocket: handle sopoll() errors correctly Without this change, unmounting smbfs filesystems with an INVARIANTS kernel would panic after 10e64782ed59727e8c9fe4a5c7e17f497903c8eb. PR: 253079 Found by: markj Reviewed by: markj, jhb Obtained from: CheriBSD Sponsored by: DARPA Differential Revision: https://reviews.freebsd.org/D32492 (cherry picked from commit 04c91ac48ad13ce0d1392cedbd69c2c0223d206f) --- sys/kern/sys_generic.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/sys/kern/sys_generic.c b/sys/kern/sys_generic.c index fcdd5604583e..0840456f582f 100644 --- a/sys/kern/sys_generic.c +++ b/sys/kern/sys_generic.c @@ -1596,10 +1596,10 @@ selsocket(struct socket *so, int events, struct timeval *tvp, struct thread *td) */ for (;;) { selfdalloc(td, NULL); - error = sopoll(so, events, NULL, td); - /* error here is actually the ready events. */ - if (error) - return (0); + if (sopoll(so, events, NULL, td) != 0) { + error = 0; + break; + } error = seltdwait(td, asbt, precision); if (error) break;
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