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[204.195.22.127]) by smtp.gmail.com with ESMTPSA id r3sm1120619pfg.145.2020.02.20.20.23.24 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 20 Feb 2020 20:23:24 -0800 (PST) Date: Thu, 20 Feb 2020 20:23:14 -0800 From: Stephen Hemminger To: netdev@vger.kernel.org Subject: Fw: [Bug 206615] New: WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:447 dev_watchdog+0x232/0x240 Message-ID: <20200220202314.32be327f@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 This looks like both a hardware/driver issue and a more generic problem with the use of warnings in the network stack. The network code has a lot of warnings that should really be notices, to prevent issues with panic on warn. Begin forwarded message: Date: Fri, 21 Feb 2020 01:06:57 +0000 From: bugzilla-daemon@bugzilla.kernel.org To: stephen@networkplumber.org Subject: [Bug 206615] New: WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:447 dev_watchdog+0x232/0x240 https://bugzilla.kernel.org/show_bug.cgi?id=206615 Bug ID: 206615 Summary: WARNING: CPU: 1 PID: 0 at net/sched/sch_generic.c:447 dev_watchdog+0x232/0x240 Product: Networking Version: 2.5 Kernel Version: 5.4.19 Hardware: All OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Other Assignee: stephen@networkplumber.org Reporter: alec@onelabs.com Regression: No Created attachment 287525 --> https://bugzilla.kernel.org/attachment.cgi?id=287525&action=edit kernel panic on warn message Hi, After a few hours/minutes/days (incredibly random) one of my servers keeps crashing (panic_on_warn is enabled for security purposes.) I have tried adding `acpi=off` `pcie_aspm=off` and `nowatchdog` to the kernel params but nothing solves it for good. I disabled SMP in the BIOS as well, CPU is an AMD Athlon II X2 B28. Panic trace attached, server is a minimal Slackware system, nothing fancy. This problem just started happening recently, server has been up for the past year with no issue. Same problem occurs on kernel version 5.4.20 as well. Thanks! Alec -- You are receiving this mail because: You are the assignee for the bug.