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[204.195.22.127]) by smtp.gmail.com with ESMTPSA id w82sm8822755pff.7.2020.08.06.08.04.59 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 06 Aug 2020 08:04:59 -0700 (PDT) Date: Thu, 6 Aug 2020 08:04:52 -0700 From: Stephen Hemminger To: netdev@vger.kernel.org Subject: Fw: [Bug 208833] New: applying HFSC causes soft lockup (probably related to pppoe) Message-ID: <20200806080452.0693f8b2@hermes.lan> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Begin forwarded message: Date: Thu, 06 Aug 2020 13:22:36 +0000 From: bugzilla-daemon@bugzilla.kernel.org To: stephen@networkplumber.org Subject: [Bug 208833] New: applying HFSC causes soft lockup (probably related to pppoe) https://bugzilla.kernel.org/show_bug.cgi?id=208833 Bug ID: 208833 Summary: applying HFSC causes soft lockup (probably related to pppoe) Product: Networking Version: 2.5 Kernel Version: 5.7 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Other Assignee: stephen@networkplumber.org Reporter: valahanovich@tut.by Regression: No Created attachment 290795 --> https://bugzilla.kernel.org/attachment.cgi?id=290795&action=edit example of my regular tc script Applying and reapplying HFSC qdisc to interface with heavy load often causes soft lockup (in random processes, in short time after applying qdisc). Stack trace was somewhat uninformative and hard to get. I mostly observe this with torrent client on PPPOE client interface when run attached script several times. Will attach dmesg as soon as i will be able to reliably get it. I tried to bisect bug, but stopped at some old kernel that won't even boot with my config. So the problem could be old but unnoticed. -- You are receiving this mail because: You are the assignee for the bug.