From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=180.181.231.80 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793771893; b=axQtgLO8YUrxiYrwqOpQ/oSSwko4vU89paZaGtPcAS6EB9RxZQwI2uOpkYPj68rcP/Hv dwm7mNj3lKX5ml6wFC6rgMrvBqleABNG3ZxL/EXi0/A/t6fUa04Y78uT2PkmS4TgaVIVV 1h2m5QfUPuDoTgvcJg1ViQhZ8S6dzpC3KvhRtTkmnHvf+sN6wtIjY2/Nv0bFEZ1TRzKDd 5yj/l3OIUlk2tDNbObxD1DtfqKVG/tjqe9NzTS7AWouTUUjm87WomEKYydocvyFG0wbRW v/sfSekQnn8MpHhdqtyWiNKX2ChwjnlHT5nWCrFhLeN9SRNZPIN5hhAAcw9W5qmCJfA== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793771893; h=DMARC-Filter:DKIM-Signature:Received:Received:Date:From:To:Cc: Subject:Message-ID:References:MIME-Version:Content-Type: Content-Disposition:In-Reply-To; bh=GuMgcgXi2d8E9GAegF23L5yqInpKNepyztEiRzZzVFY=; b=LXFi7uljD7TW2q5DuSQifGEGblCXhir29e4N/ZmjyZrPKogzpJSXnUGJuxQ9ixdAq9bH zqYKTIW2tgAD7Uhf9SVnVuUwNe43RezB2nzr57RTzCNVvzRM/Ysln45gaMLo52OYVOz7+ 1RzaXfHpjKPbn9EF3RVxEeYEDHLfkkvt2pu1repyZlHe7tJtEyOLVsgNd8o+0r6EmbKcL fBxb94yYwSjBinJVDqRsVJKK9Vdb+VP+dEW2FrNh0iuClt+B5zYgx4MgyzLIiKjz7BSOH Ao78lqoq1y+fFU8SDpqSVWtBs62/+YfA/cHwtFSUK9UsvjFjcsUgOyUSaDUldqVRNnw== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=gondor.apana.org.au; spf=pass smtp.mailfrom=gondor.apana.org.au; dkim=pass header.d=gondor.apana.org.au header.i=@gondor.apana.org.au header.a=rsa-sha256 header.s=h01 header.b=nKNhpjXt; arc=none smtp.remote-ip=180.181.231.80 Received: from abb.hmeau.com (abb.hmeau.com [180.181.231.80]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id B317F606A328; Wed, 4 Nov 2026 05:58:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org B317F606A328 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=gondor.apana.org.au Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gondor.apana.org.au Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key, unprotected) header.d=gondor.apana.org.au header.i=@gondor.apana.org.au header.a=rsa-sha256 header.s=h01 header.b=nKNhpjXt DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gondor.apana.org.au; s=h01; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:cc:to:subject:message-id:date: from:content-type:reply-to; bh=GuMgcgXi2d8E9GAegF23L5yqInpKNepyztEiRzZzVFY=; b=nKNhpjXtNFPq3RPGi6Z3gnojYnP7E9wP8YpuIKrmvFVH9l758u0Z2rhJDSDgSCm6+owCN0gKm3Q wSMC9l9y9ZHRsw+HtyemNhMuTKV2aSYs8iccdsfHA4+09FuaAXGjPpmJtncoSiwlMorNl1NAO0Mol WDM04nQVzydHwNsEojj9PVyNGoPhm24p4i14e9NI3qQvnvvpMU0cyHWwhj6s8MIatcCvJDPZcM/5g fAqdX2giQB8BmTQoPALJXawvKupLSiQ51WcQZzIkEDNecXkW3yQ2Ob+kNh6lX73ziNnpXftTo8+NP 9Ds7ZSeaaTHFcLIa6C+fEFpi2IQ+kFqTi/Pw==; Received: from loth.rohan.me.apana.org.au ([192.168.167.2]) by formenos.hmeau.com with smtp (Exim 4.98.2 #2 (Debian)) id 1xOU0V-0000000AkBq-1V5g; Wed, 04 Nov 2026 13:58:00 +0800 Received: by loth.rohan.me.apana.org.au (sSMTP sendmail emulation); Wed, 04 Nov 2026 13:57:59 +0800 Date: Wed, 4 Nov 2026 13:57:59 +0800 From: Herbert Xu To: Linus Torvalds Cc: "Liam R. Howlett (Google)" , Davidlohr Bueso , Uladzislau Rezki , Michal Hocko , Baoquan He , Alexander Potapenko , Andrey Ryabinin , Marco Elver , Michal Hocko , Linux Crypto Mailing List , Andrew Morton , Thomas Graf , linux-mm@kvack.org, linux-kernel@vger.kernel.org, maple-tree@lists.infradead.org, Lorenzo Stoakes , Chris Mason , Alice Ryhl , Andrew Ballance , stable@vger.kernel.org, "David Hildenbrand (Arm)" Subject: Re: [PATCH 4/4] rhashtable: fix vmalloc() deadlock in atomic rehash Message-ID: References: X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: On Tue, Nov 03, 2026 at 09:39:03PM -0800, Linus Torvalds wrote: > > None of that says why. It only repeats what I already said: it seems > to be due to kmsan doing bad things. Fair enough. When I was told that folks needed vmalloc under GFP_ATOMIC I didn't question it any further: https://lore.kernel.org/all/aeiHkG7X_dieMdw5@milan/ Looking back, it does look like it was never explained who these folks are. Ulazislau, so who needs vmalloc GFP_ATOMIC support in the kernel? Or is it only used by out-of-kernel code? Thanks, -- Email: Herbert Xu Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt