From owner-freebsd-bugs@freebsd.org Sat Mar 27 20:27:19 2021 Return-Path: Delivered-To: freebsd-bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id AF13E57F3AC for ; Sat, 27 Mar 2021 20:27:19 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: from mailman.nyi.freebsd.org (mailman.nyi.freebsd.org [IPv6:2610:1c1:1:606c::50:13]) by mx1.freebsd.org (Postfix) with ESMTP id 4F79PM4PYqz4fNX for ; Sat, 27 Mar 2021 20:27:19 +0000 (UTC) (envelope-from bugzilla-noreply@freebsd.org) Received: by mailman.nyi.freebsd.org (Postfix) id 96F8B57F1BE; Sat, 27 Mar 2021 20:27:19 +0000 (UTC) Delivered-To: bugs@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 96BFF57F405 for ; Sat, 27 Mar 2021 20:27:19 +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 4F79PM3pS8z4fCV for ; Sat, 27 Mar 2021 20:27:19 +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 6AF9613727 for ; Sat, 27 Mar 2021 20:27:19 +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 12RKRJb8016247 for ; Sat, 27 Mar 2021 20:27:19 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 12RKRJ4k016246 for bugs@FreeBSD.org; Sat, 27 Mar 2021 20:27:19 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 254610] tcp_bbr broken after 69a34e8d0235c0304a28bf8ab076b931aa61835f Date: Sat, 27 Mar 2021 20:27:19 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: new 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 Some People X-Bugzilla-Who: delphij@FreeBSD.org X-Bugzilla-Status: New X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: bug_id short_desc product version rep_platform op_sys bug_status bug_severity priority component assigned_to reporter Message-ID: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 27 Mar 2021 20:27:19 -0000 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D254610 Bug ID: 254610 Summary: tcp_bbr broken after 69a34e8d0235c0304a28bf8ab076b931aa61835f Product: Base System Version: CURRENT Hardware: Any OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: delphij@FreeBSD.org After https://cgit.freebsd.org/src/commit/?id=3D69a34e8d0235c0304a28bf8ab076b931a= a61835f , a kernel configured with tcp_bbr would panic on start when a network faci= ng service starts: panic: mtx_lock() of spin mutex socket @ /usr/src/sys/kern/uipc_socket.c:36= 15 cpuid =3D 3 time =3D 1616820332 KDB: stack backtrace: db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe01f7031= 5f0 vpanic() at vpanic+0x181/frame 0xfffffe01f7031640 panic() at panic+0x43/frame 0xfffffe01f70316a0 __mtx_lock_flags() at __mtx_lock_flags+0x13b/frame 0xfffffe01f70316f0 soo_kqfilter() at soo_kqfilter+0x93/frame 0xfffffe01f7031730 kqueue_register() at kqueue_register+0x680/frame 0xfffffe01f70317c0 kqueue_kevent() at kqueue_kevent+0x103/frame 0xfffffe01f7031a90 kern_kevent_fp() at kern_kevent_fp+0x95/frame 0xfffffe01f7031ae0 kern_kevent() at kern_kevent+0x80/frame 0xfffffe01f7031b40 kern_kevent_generic() at kern_kevent_generic+0x70/frame 0xfffffe01f7031ba0 sys_kevent() at sys_kevent+0x61/frame 0xfffffe01f7031c00 amd64_syscall() at amd64_syscall+0x12e/frame 0xfffffe01f7031d30 fast_syscall_common() at fast_syscall_common+0xf8/frame 0xfffffe01f7031d30 --- syscall (560, FreeBSD ELF64, sys_kevent), rip =3D 0x800c7464a, rsp =3D 0x7fffdf9ead98, rbp =3D 0x7fffdf9eade0 --- . With the revision reverted locally (commits: e13e4fa6c4eba72de5c4685942de5dbe8f43db73, 0a4f851074a3ca74cd4859c20e7d9807b2aeca65, ab4fad4be14462e347ed24ee3663a18eacfb138e and 69a34e8d0235c0304a28bf8ab076b931aa61835f), the issue is gone. This is not reproducible if tcp_bbr is not loaded and net.inet.tcp.functions_default=3Dbbr removed from /etc/sysctl.conf, with or without these revisions reverted. --=20 You are receiving this mail because: You are the assignee for the bug.=