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 90EE452F71 for ; Tue, 10 Sep 2024 07:51:56 +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=1725954716; cv=none; b=ETwo+1epgAV/wJ3/o/DARZ33IkdGNFP6lIqbxkn4nti64O2hgZGdpVVfbKdkDw/w7vAmm7d4XI1qybrZ6ol6EBndcyKQuUDQ8ds2+7AaJhbncHLQ5iy/PWFfijekSU7e+ANMr4Trhgsh93AeQXLM4nNayc6WILdlKcbCixr08NI= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725954716; c=relaxed/simple; bh=RW3Nw3J87G9SQi27sKAUqzT4P/SC9ccDDz2cFWd7NA8=; h=References:From:To:Cc:Subject:Date:In-reply-to:Message-ID: MIME-Version:Content-Type; b=nLKxnWaGMqEIpdld/7HE9wvViNXdn7Js8zXgy3A04wXzeuGIEQjGHWyrUYqT1SYPt3z21KqUcD7Xu1WCpAQ7FDRW0A75QCUpcig9da/Z6D4lJfQ3PXhiRDJ7Ky8SQVAqwSUtcz9SWaGenB2s2GyxFnjOyxqwr4LP6ik9s+NrZkI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=jjzs+wg2; 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="jjzs+wg2" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 9B32BC4CEC3; Tue, 10 Sep 2024 07:51:55 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1725954716; bh=RW3Nw3J87G9SQi27sKAUqzT4P/SC9ccDDz2cFWd7NA8=; h=References:From:To:Cc:Subject:Date:In-reply-to:From; b=jjzs+wg2Cr+iSIfPxr15oIqhwnTGAkJJrJz4PXZe3IYGHUcG0Po4KcnzctXmnih3X IbnYvmV5Bl9OK3OYjhFPmnz6h6wXuqF/vmD70/+TlL/b5apfmi0HR7qMavXPB776ar g/BVCUjgvgxLhwcvN08pmkj1r9ZbbjO9Uqb5DPQRTRBgcZNScqu3ozqJehnJGWbUw/ W+VSYKq23awmr7SNMm/VVrHVaKsM3qjoQhuqthIMz4cCHzJvwFzifoHby4FdV1Dioa 2mpXWM0vTThA3Ff0mQefjASE/8qAjQ08Zti9GYXlmHe1FkEWViBG6KPeNOH2auUlm1 kjovZVYYSTW8w== References: <87v7z586py.fsf@debian-BULLSEYE-live-builder-AMD64> <20240909-einjagen-meterhoch-45c77ca03164@brauner> <20240909-unwillig-irreal-26bd9fa085c6@brauner> <20240909-arterien-zweit-3502f11b9f50@brauner> <20240909-zumal-revision-8af9dc0593e5@brauner> User-agent: mu4e 1.10.8; emacs 29.2 From: Chandan Babu R To: Alexander Mikhalitsyn Cc: linux-next@vger.kernel.org, mszeredi@redhat.com, Christian Brauner Subject: Re: [BUG REPORT] linux-next/fs-next released on 6th September fails to boot Date: Tue, 10 Sep 2024 13:21:33 +0530 In-reply-to: Message-ID: <877cbkaque.fsf@debian-BULLSEYE-live-builder-AMD64> Precedence: bulk X-Mailing-List: linux-next@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain On Mon, Sep 09, 2024 at 05:56:11 PM +0200, Alexander Mikhalitsyn wrote: > Dear Chandan, > > Please can you check if the following patch resolves issue for your workload: > > diff --git a/fs/fuse/dev.c b/fs/fuse/dev.c > index 7885f071fa1e..f130b23d6850 100644 > --- a/fs/fuse/dev.c > +++ b/fs/fuse/dev.c > @@ -148,7 +148,7 @@ static struct fuse_req *fuse_get_req(struct > mnt_idmap *idmap, > if (for_background) > __set_bit(FR_BACKGROUND, &req->flags); > > - if ((fm->sb->s_iflags & SB_I_NOIDMAP) || idmap) { > + if (!fm->sb || (fm->sb->s_iflags & SB_I_NOIDMAP) || idmap) { > kuid_t idmapped_fsuid; > kgid_t idmapped_fsgid; > > From your call stack if looks caused by CUSE case. > It's my bad that I have not considered this use case for > fuse_get_req() and there is, obviously, > no such thing as fm->sb for CUSE scenario. > The above patch solves the problem. Thank you! -- Chandan