From nobody Mon Mar 21 18:11:16 2022 X-Original-To: bugs@mlmmj.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mlmmj.nyi.freebsd.org (Postfix) with ESMTP id C6564191738F for ; Mon, 21 Mar 2022 18:11:16 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4KMjNh4Rmjz3hWC for ; Mon, 21 Mar 2022 18:11:16 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org (kenobi.freebsd.org [IPv6:2610:1c1:1:606c::50:1d]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 7821A201C6 for ; Mon, 21 Mar 2022 18:11:16 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from kenobi.freebsd.org ([127.0.1.5]) by kenobi.freebsd.org (8.15.2/8.15.2) with ESMTP id 22LIBGV1066380 for ; Mon, 21 Mar 2022 18:11:16 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 22LIBGXg066379 for bugs@FreeBSD.org; Mon, 21 Mar 2022 18:11:16 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 262587] panic: lock (sleep mutex) umtxql not locked @ /usr/src/sys/sys/umtxvar.h:262 on 14-current master-n253798-8cdecdecb43 Date: Mon, 21 Mar 2022 18:11:16 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: dchagin@FreeBSD.org X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-bugs@freebsd.org MIME-Version: 1.0 ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=freebsd.org; s=dkim; t=1647886276; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=0/UnEJ0Ozr5e4Goond/3w0JWEgkeW+SIgPGL+AXHKlo=; b=SUhnY1RRcm30JCeh59YY9CJoOIXvGxlDSNjIUgWC2MeGiTR/7CH/1YiukMKQ1S9WhZKPVT yIa+9LKzJ1XNrrRIChKho2xnEq+XthB4nUDlcfcJSBamSl1pYx7TGMBAdyl7abI5dANvIS N2Vkh/bNqKl/Brk0byQ2wGDHbsZppxJR3H5eFzhHFTC98DnyYmgCvKR0d3dOMEI34+PDM1 rh+3GT9LE02YOKUEAzMf3+QkFlqWoyFTDCvww32aP3QgYdbiwAwE76CGnBX+9euB4upf/B RggTPbGCb9EYpZNI2MQt+Qo14KIt71MGZPODMn+MTweFVUMdB9eyHCLKIkKEHw== ARC-Seal: i=1; s=dkim; d=freebsd.org; t=1647886276; a=rsa-sha256; cv=none; b=TUKSGwiQRnYBNF9GFTwDG/azo4pFCp24+gWf3vFZAy2gLyGuN9jY7Z+Sfl4oOrAmw014x+ LTc3wz6LFm/YauFZnG94RMqQcuL3JJiLCDyvnUsXLwUdZj//6NrA3/RWt3PCEzfydbTpxq HjNIG3cUPMU7Wr8cbFsvbCNNRtfNlVVx4Uzia2+RF03t2ZwvyyGw7gyi2B1p6lzE5jCixv 9D2huhAZr+u6VG3QGp8e1/UGFpG/P/ef3h8LHINLcLOmoQiH5u1Q9PPr5nMabeXgBEmPMA Gm/diCzKjf1hHPOFUWfLIhr++Ax79zztUtJM3EbIkjOoAKkv/rrDeFxsrcgsBg== ARC-Authentication-Results: i=1; mx1.freebsd.org; none X-ThisMailContainsUnwantedMimeParts: N https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D262587 --- Comment #17 from Dmitry Chagin --- Hi, Alexander! Yes, umtxq_requeue() relies on previous behaviour of umtxq_sleep(), where the lock dropped and reacquired, as umtxq_requeue() replaces the lock. A year ago, we discussed this block with kib@ and decided that it was safe = to drop/acuire it. --=20 You are receiving this mail because: You are the assignee for the bug.=