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bh=8bBYSTZpcRwKvIkblTZvAnTSurmf8yAiPann+WMyjBQ=; b=eK4w4i7lYj7DJFTnZu+4u/xtfibAeUVwOCGmq28M6sv/FW7HGnKxpF0hv3K1NhBMU5JGO8 yd6Bni0OIPp+rssxWbW6f8aEPOKLfQw9xomuwPvK+5fU3fItddhPKJQVMhOEdSMvtSWRfg V3VamnBKS9UxD7I2ejvhfuj5jXwmdsX2XnSnyz6j9WairOFbJM3BoAkCB/6WLXrUROM4aK QgtjFS8cQI3auT/EBLlOHx7iy45BKHBxxu0IwSEgrurubfawpexT1Sk3Lp20R6qvjs8OaV 8LmVxZ5Azpl1uBJCELw0h0kjfkSvyNpWWitpc3UTx1/Qvgq/L/zIBAff6LL4BA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1753774077; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=8bBYSTZpcRwKvIkblTZvAnTSurmf8yAiPann+WMyjBQ=; b=8P2C9jOTMPv3/SiXxbOC2HqnDfEuJZYCBPU5j0I5WryKLddPUv4BpvbMwSrbtQDpDb6WG2 mUr6nKY0LXmtDzBA== To: Oliver Sang Cc: Peter Zijlstra , oe-lkp@lists.linux.dev, lkp@intel.com, linux-kernel@vger.kernel.org, x86@kernel.org, Sebastian Andrzej Siewior , linux-mm@kvack.org, ltp@lists.linux.it, oliver.sang@intel.com Subject: Re: [tip:locking/futex] [futex] 56180dd20c: BUG:sleeping_function_called_from_invalid_context_at_kernel/nsproxy.c In-Reply-To: References: <202507231021.dcf24373-lkp@intel.com> <87a54usty4.ffs@tglx> <87seikp94v.ffs@tglx> Date: Tue, 29 Jul 2025 09:27:56 +0200 Message-ID: <87wm7ro3r7.ffs@tglx> MIME-Version: 1.0 Content-Type: text/plain X-Stat-Signature: zbbb19a6756jupsm56a8uz5igiqb64r4 X-Rspam-User: X-Rspamd-Queue-Id: A865140011 X-Rspamd-Server: rspam02 X-HE-Tag: 1753774079-571300 X-HE-Meta: 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 twnd7DZ9 nTNwbaQoIKmdVr7lNxTgd68Ba2nDmPrSH3LkuyIZ4Q+vNRewiPKwcQzFSTVFo6kfOCNa6hThnfRzK3O4mLDBlw5g637mMs6+yD9sGnNcB5F/Yi9oSSKfrm9Vtgm3vX1n/jJ7AHm8o7sgyTBb/MB4RveC7nIfse8IIjWqDX/lNBqQ/fckv04obJK725FZMgYnNDcIe2Nor9TWNNIE7pVXuKj4VaYDR6sQpqRJJGJnp3lUQwtI= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Oliver! On Tue, Jul 29 2025 at 08:22, Oliver Sang wrote: > On Fri, Jul 25, 2025 at 05:45:04PM +0200, Thomas Gleixner wrote: >> Can you please enable CONFIG_PREEMPT_TRACER and add >> >> 'trace_event=preemptirq:preempt_disable,preemptirq:preempt_enable ftrace_dump_on_oops' >> >> to the kernel command line. The latter will dump the recorded >> preempt_enable/disable events and we can pinpoint the function which is >> responsible for that. > > the config with CONFIG_PREEMPT_TRACER enabled is attached as > config-6.16.0-rc5-00002-g56180dd20c19 > > by this config, we still see random > WARNING:at_kernel/sched/core.c:#preempt_count_sub ... > but bot seems not be able to capture other new dmesg stats. Ah. The tracer does not dump on warnings by default. You need 'panic_on_warn' on the command line as well. Forgot about that earlier. Thanks, tglx