From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 5A351156F20 for ; Sat, 21 Feb 2026 14:10:28 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771683028; cv=none; b=bQGNguzKlF4wLrj9LnhuEnAkDAjsiIO+jon8AJCj9Q8J8rc/W296VwgPL4leFEZjvdcVHrRSBFenpSMPpsicl47m9dZV769w39SIU5Bs6MXTf1DF67259Dqrchs7QwBIahDhrVcTBZOYkvho5tErVhEKHGLpv7DMO1kSnYNdioE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1771683028; c=relaxed/simple; bh=rqthq+rpUAvYKUCj0k+7wtcGyILtP3Zgjjxo6LRxS7Y=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=PB0Luq14O1KlyyA2v6rHdS6fKimBxoA7zQvXnp8A7VGOEEdElhzK7W2GonstfxcNfUtdj/9tzZceWDyUoNxlsDVdjFgwR4ILGXrD17V+YfzOsSw9jtqtQ20zaVzS+bvpTefMyrNStA7wwtoo6hQhukR8W0DHHs7KpY6tQBfZka0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=kvr6LS0t; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="kvr6LS0t" Received: by smtp.kernel.org (Postfix) with ESMTPSA id BEE8BC4CEF7; Sat, 21 Feb 2026 14:10:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1771683027; bh=rqthq+rpUAvYKUCj0k+7wtcGyILtP3Zgjjxo6LRxS7Y=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=kvr6LS0te74pnwW1/12VgNqs3EeprC2k1X2Mt32vPuL5QRwoKcMUH03jWVf1H1HPC NRrzm37BQFTKANGXQYqPEho4pJGIbK4mqQ4W5atmqlZHdGbL5OGoQdcVNsEET+KbK6 D6ACmrR7mfZFs0/sMI9UE8o6X64fXDbpFrlOdUW+WgmjepBQv/Vmo0O+hrwSMRZXVD F451Pj3/CdFrMf4Ps2DyJTj2F863hyyHE/xwTA4XxItj72LnPdWSXG/C9VHs1iNB7o eJNWtDV1rnHTiTJo2tLR9lUY+jbgo+L/CgjbTv7RcPcZGGxhpx1zidqKhYdfuBdfq/ Ya9ghLFoeQn9Q== Received: by finisterre.sirena.org.uk (Postfix, from userid 1000) id 5DFFC1AC5849; Sat, 21 Feb 2026 14:10:25 +0000 (GMT) Date: Sat, 21 Feb 2026 14:10:25 +0000 From: Mark Brown To: Guillaume Tucker Cc: David Gow , Brendan Higgins , Rae Moar , Frederic Weisbecker , linux-kselftest@vger.kernel.org, kunit-dev@googlegroups.com Subject: Re: RCU stalls running KUnit on mainline Message-ID: References: <59e8c352-7bc8-4358-af74-fee8c29280ba@davidgow.net> <8aa71ce7-7c83-4446-b1fa-b0f862bde53f@sirena.org.uk> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="NxBSfSXpDRB4O7Us" Content-Disposition: inline In-Reply-To: X-Cookie: Think big. Pollute the Mississippi. --NxBSfSXpDRB4O7Us Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Fri, Feb 20, 2026 at 04:30:19PM +0100, Guillaume Tucker wrote: > Yes, although I've run some automated VIXI bisections and found one > reliable panic in rcu. I had to do it in two steps as the first > bisection landed on a merge commit. After a bit more investigation I > reported what I found here: > https://lore.kernel.org/all/0150e237-41d2-40ae-a857-4f97ca664468@gtucker.io/ > I can bisect the other KUnit issues separately too if that helps now > that I have a quick workaround to avoid this panic (see email). Thanks for tracking that down and reporting! Hopefully it gets fixed soon and we can turn KUnit testing back on for -next, one flaw with that check for intermittent bugs is that it's not so easy to hold back the tree introducing the problem. --NxBSfSXpDRB4O7Us Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmmZvNAACgkQJNaLcl1U h9ABXwf/RiN1GOQ6hCInR+HUHqKVscjkWTaiJC5DeRrZx1sUH7EXG718wgxjVNsZ TgWtRrl1P+RlYpbr9/128EXUXVF/yH4jJQvpnIlnLPEP27nZHNESAc5Fz/zB9/Ym 7hv85SE6SjnCHGvREFlZFXEToqfPAuogFEDvOnvsG/U9W037S5H/NqVw1GyRL0Wv C1HYWU01zQoaeyI/3MIyN/LGA3j/BpQQooQcxrUa7KD6rho405qwTmwuZ3BofpxC rRirwlqR7zLpG+ZhfFZfNoSd6pu5xZBNeOJOQ4ydhZ4vav9sCwy/JC2RWUm1dU8k 3EeAWU6iWlmGDd9bgdck1sJjd6GOYQ== =7rN2 -----END PGP SIGNATURE----- --NxBSfSXpDRB4O7Us--