Received: by 2002:ab2:7903:0:b0:1fb:b500:807b with SMTP id a3csp900708lqj; Mon, 3 Jun 2024 04:38:02 -0700 (PDT) X-Forwarded-Encrypted: i=3; AJvYcCV8UJ2WMhlB9Icvhnx4j41PeRpYngtmMgEkw5zMglePr0hcaDn9GgNS3gWB6Ce2vHcEaFwyj0cZ269r5F4TubU66moJjlagTWxpUILMVw== X-Google-Smtp-Source: AGHT+IGRFf10jdegIzfe4h0HdxW7dbcDXI5FmYpUKPch8uvebqS5zdeBd8GVA5a8UiTxHl3Pgac+ X-Received: by 2002:a17:90a:e548:b0:2c0:11d4:b2dc with SMTP id 98e67ed59e1d1-2c1dc58659dmr6923517a91.24.1717414681732; Mon, 03 Jun 2024 04:38:01 -0700 (PDT) ARC-Seal: i=2; a=rsa-sha256; t=1717414681; cv=pass; d=google.com; s=arc-20160816; b=pNibNOpNclFjiXyNhWDrLVcFz31MvbNYfgmMxMbVX1NjmDfxLBSDa8XTQ2IPm4a6/n hXbuqs1KL7ePhTuOeFIEeeQLqfQClCmKYX7CSpb8SP2OT/bBWocHpOOtsQqcM9YaFP53 ZJMuz60LcPrV5AsozxzZWKfih4iEaL4TqsR7WjMWX/JWOSu5Xd3KJsfA23bSUFbaEc42 jgmVRnbVqSUkJPa7OqqXKQyPNojv2SdpyT/BZ2DsOaXvVs7UfKSVnczNNmm1mYQzR8zc d0KkDaPt8SAGX9Btew45yFMbvmjxSNjc8tE902odlNdbnPwF2HtRbk9wrC5ZNjnL632N hBmA== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=in-reply-to:content-disposition:mime-version:list-unsubscribe :list-subscribe:list-id:precedence:references:message-id:subject:cc :to:from:date:dkim-signature:dkim-signature:dkim-signature :dkim-signature; bh=7pfFFXzKIW4SMjbgPuQqcNQPPQGz7PtcZJ46Fj089Is=; fh=HiQCI4fucI5xTqqOmTK6OaU2dVsbq83uk2cj6Iaalzo=; b=u2MhQQBLC+x90MF0ckE/nQwudXbxM0yNEQ5Ha+p3HnGN61L5mLR8hbd+ugksb4Np0w j16CBMFVWzTYA0igUK/FG7pkVfgUPNgTOSbsQUars9o7VbQAbf+PPh9db7PxAXAm7mt9 MMX3d9rZ9/g2sRGEUPW4euC9XaKsH9vq4F8Bo8RIZfmWOq2k8DDYRbiCF6wvzoTQyR0I yhe0S/7+9tHnF+owOEevuiGTjlgPKocebZSChZew19CmCDwd0kuEq6SDArpm1ZYeXATP 0x6NwgL5Pd4FL33VHm3HUNa1wWWpGUEgdGx2xj+HgKq6xddyksvnVGXOTowCJJkXVf9w YBpg==; dara=google.com ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@suse.cz header.s=susede2_rsa header.b="y6W/tjwL"; dkim=neutral (no key) header.i=@suse.cz header.s=susede2_ed25519; dkim=pass header.i=@suse.cz header.s=susede2_rsa header.b=flPfk7AO; dkim=neutral (no key) header.i=@suse.cz header.s=susede2_ed25519 header.b="FUz/Pj4g"; arc=pass (i=1 spf=pass spfdomain=suse.cz dkim=pass dkdomain=suse.cz dkim=pass dkdomain=suse.cz); spf=pass (google.com: domain of linux-ext4+bounces-2750-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.48.161 as permitted sender) smtp.mailfrom="linux-ext4+bounces-2750-linux.lists.archive=gmail.com@vger.kernel.org" Return-Path: Received: from sy.mirrors.kernel.org (sy.mirrors.kernel.org. [147.75.48.161]) by mx.google.com with ESMTPS id 98e67ed59e1d1-2c1c27ca360si6286461a91.72.2024.06.03.04.38.01 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 03 Jun 2024 04:38:01 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-ext4+bounces-2750-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.48.161 as permitted sender) client-ip=147.75.48.161; Authentication-Results: mx.google.com; dkim=pass header.i=@suse.cz header.s=susede2_rsa header.b="y6W/tjwL"; dkim=neutral (no key) header.i=@suse.cz header.s=susede2_ed25519; dkim=pass header.i=@suse.cz header.s=susede2_rsa header.b=flPfk7AO; dkim=neutral (no key) header.i=@suse.cz header.s=susede2_ed25519 header.b="FUz/Pj4g"; arc=pass (i=1 spf=pass spfdomain=suse.cz dkim=pass dkdomain=suse.cz dkim=pass dkdomain=suse.cz); spf=pass (google.com: domain of linux-ext4+bounces-2750-linux.lists.archive=gmail.com@vger.kernel.org designates 147.75.48.161 as permitted sender) smtp.mailfrom="linux-ext4+bounces-2750-linux.lists.archive=gmail.com@vger.kernel.org" Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by sy.mirrors.kernel.org (Postfix) with ESMTPS id 24D84B258A0 for ; Mon, 3 Jun 2024 11:27:22 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 8AD0684A51; Mon, 3 Jun 2024 11:27:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=suse.cz header.i=@suse.cz header.b="y6W/tjwL"; dkim=permerror (0-bit key) header.d=suse.cz header.i=@suse.cz header.b="p2RIwMKT"; dkim=pass (1024-bit key) header.d=suse.cz header.i=@suse.cz header.b="flPfk7AO"; dkim=permerror (0-bit key) header.d=suse.cz header.i=@suse.cz header.b="FUz/Pj4g" X-Original-To: linux-ext4@vger.kernel.org Received: from smtp-out1.suse.de (smtp-out1.suse.de [195.135.223.130]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7A6482C6A3; Mon, 3 Jun 2024 11:27:13 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=195.135.223.130 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717414035; cv=none; b=p8kD0k5JkZyR3doAe5gJmsVR/RbCG0MtsxjD6PVFb29dYlzVbszi4EwmjBSKGwjtPfKOtCtbGwlTlklO7MhUMk97ZHSUH1NzhAGV/MPar3xZdJcYitHeseCbT/5l3zlilZAw6LvyKBkFdgfBQrVQzazFHWiJwnESWHzPQVJ0O3w= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1717414035; c=relaxed/simple; bh=cJPnpg2hCwgHukR1vYoWJ+DVnA03/FFtOwtTCUJ8wkY=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=YMs2O09di+tB4XMzUfMUv/nXqsLLfeTKOLs4EwYrOkWKppwk7D+uRuivGFsQekBYqaX9r+tu8UdjKofIzZ5xoCPq9uCpJ+LalTB1Iy6pUFZs/lAnQlyjCrHA1BbYcEd2p+yXpi3NQYYr5rRELQAtzEE2NMeyBw51FL2L5Xe8lCA= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=suse.cz; spf=pass smtp.mailfrom=suse.cz; dkim=pass (1024-bit key) header.d=suse.cz header.i=@suse.cz header.b=y6W/tjwL; dkim=permerror (0-bit key) header.d=suse.cz header.i=@suse.cz header.b=p2RIwMKT; dkim=pass (1024-bit key) header.d=suse.cz header.i=@suse.cz header.b=flPfk7AO; dkim=permerror (0-bit key) header.d=suse.cz header.i=@suse.cz header.b=FUz/Pj4g; arc=none smtp.client-ip=195.135.223.130 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=suse.cz Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.cz Received: from imap1.dmz-prg2.suse.org (imap1.dmz-prg2.suse.org [IPv6:2a07:de40:b281:104:10:150:64:97]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by smtp-out1.suse.de (Postfix) with ESMTPS id 63A272224D; Mon, 3 Jun 2024 11:27:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1717414031; h=from:from:reply-to: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=7pfFFXzKIW4SMjbgPuQqcNQPPQGz7PtcZJ46Fj089Is=; b=y6W/tjwLyJFxYOMqAVNiil/WQmavDW8lR/py1GpPK1u/XNM6fc+gV0qTEt47HpLOW1/hh5 PxMOJvMm4dp6wluFyY5UtrEO0BIEH67CI8b0a4TdpSMtj1pS+ULuY7XCKL7hK+gy1lSLAA I6CDN8g9JIBJoxujiCClmPECcCM4g00= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1717414031; h=from:from:reply-to: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=7pfFFXzKIW4SMjbgPuQqcNQPPQGz7PtcZJ46Fj089Is=; b=p2RIwMKT1kTsj9NXcpvegHJol5lw/KUIDeHqirTbn039oAQbu8V8mzDa3yH6SBTEjIrlTa ts0FHhDL8vR+S0Bw== Authentication-Results: smtp-out1.suse.de; dkim=pass header.d=suse.cz header.s=susede2_rsa header.b=flPfk7AO; dkim=pass header.d=suse.cz header.s=susede2_ed25519 header.b="FUz/Pj4g" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_rsa; t=1717414030; h=from:from:reply-to: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=7pfFFXzKIW4SMjbgPuQqcNQPPQGz7PtcZJ46Fj089Is=; b=flPfk7AOOeYAnUfLtCpiJv36/Q16dFQN4aXjltYqF/2fKTOb1Xw4Qoxp34/tZvKvR5tb1K Pav9u71FY5VZRtJowJ4bon3w0m134DzwyfCGDFQSW6S6Msg2qSpjft255ZXFkLlexH4Sjf 8REr4OA0CUrTdkFoqT27hgkFO7z1znY= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.cz; s=susede2_ed25519; t=1717414030; h=from:from:reply-to: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=7pfFFXzKIW4SMjbgPuQqcNQPPQGz7PtcZJ46Fj089Is=; b=FUz/Pj4gT+sjqZWtu+0NyY8suUgunZRzh1/vNXe92rZEbWS7Ha0DJnNTVHro4FGrP5i/C9 29QjW+mtQUuUzOBQ== Received: from imap1.dmz-prg2.suse.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id 59687139CB; Mon, 3 Jun 2024 11:27:10 +0000 (UTC) Received: from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167]) by imap1.dmz-prg2.suse.org with ESMTPSA id nr/PFY6oXWb/JwAAD6G6ig (envelope-from ); Mon, 03 Jun 2024 11:27:10 +0000 Received: by quack3.suse.cz (Postfix, from userid 1000) id 0799EA087F; Mon, 3 Jun 2024 13:27:05 +0200 (CEST) Date: Mon, 3 Jun 2024 13:27:05 +0200 From: Jan Kara To: syzbot Cc: brauner@kernel.org, jack@suse.cz, linux-ext4@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk Subject: Re: [syzbot] [ext4?] INFO: task hung in vfs_rmdir (2) Message-ID: <20240603112705.hafr4gh5foxccw7f@quack3> References: <00000000000054d8540619f43b86@google.com> Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <00000000000054d8540619f43b86@google.com> X-Rspamd-Action: no action X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Spam-Level: X-Spamd-Result: default: False [-0.92 / 50.00]; BAYES_HAM(-2.41)[97.28%]; SUSPICIOUS_RECIPS(1.50)[]; URI_HIDDEN_PATH(1.00)[https://syzkaller.appspot.com/x/.config?x=47d282ddffae809f]; NEURAL_HAM_LONG(-1.00)[-1.000]; MID_RHS_NOT_FQDN(0.50)[]; R_DKIM_ALLOW(-0.20)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; MIME_GOOD(-0.10)[text/plain]; MX_GOOD(-0.01)[]; RCVD_COUNT_THREE(0.00)[3]; MIME_TRACE(0.00)[0:+]; TO_DN_SOME(0.00)[]; FUZZY_BLOCKED(0.00)[rspamd.com]; ARC_NA(0.00)[]; RBL_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:104:10:150:64:97:from]; DKIM_SIGNED(0.00)[suse.cz:s=susede2_rsa,suse.cz:s=susede2_ed25519]; RCVD_TLS_LAST(0.00)[]; DBL_BLOCKED_OPENRESOLVER(0.00)[suse.cz:dkim,imap1.dmz-prg2.suse.org:helo,imap1.dmz-prg2.suse.org:rdns,suse.com:email]; SPAMHAUS_XBL(0.00)[2a07:de40:b281:104:10:150:64:97:from]; RCPT_COUNT_SEVEN(0.00)[8]; FROM_EQ_ENVFROM(0.00)[]; FROM_HAS_DN(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; RECEIVED_SPAMHAUS_BLOCKED_OPENRESOLVER(0.00)[2a07:de40:b281:106:10:150:64:167:received]; RCVD_VIA_SMTP_AUTH(0.00)[]; TAGGED_RCPT(0.00)[42986aeeddfd7ed93c8b]; DKIM_TRACE(0.00)[suse.cz:+]; MISSING_XM_UA(0.00)[]; SUBJECT_HAS_QUESTION(0.00)[] X-Rspamd-Queue-Id: 63A272224D X-Spam-Flag: NO X-Spam-Score: -0.92 X-Spamd-Bar: / On Sun 02-06-24 20:50:18, syzbot wrote: > syzbot found the following issue on: > > HEAD commit: 4a4be1ad3a6e Revert "vfs: Delete the associated dentry whe.. > git tree: upstream > console+strace: https://syzkaller.appspot.com/x/log.txt?x=1466269a980000 > kernel config: https://syzkaller.appspot.com/x/.config?x=47d282ddffae809f > dashboard link: https://syzkaller.appspot.com/bug?extid=42986aeeddfd7ed93c8b > compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12a5b3ec980000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=103820f2980000 Based on strace (and also the reproducer) this looks purely in exfat driver. So: #syz set subsystems: exfat Honza -- Jan Kara SUSE Labs, CR