From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 851EB22126C for ; Thu, 27 Aug 2026 13:01:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787835728; cv=none; b=JoCv1W+uuGHPcr2wiqqRc/9xxw0AHSIbq+ReCUdAvQAPP7ujTitYq4b+vUxMlkXItXIXbODFzL+hRdarzjfdjJc3W0lPYDmHbCVBXpvb3MDCA+CaD1xLARpLAUmoWRQ+Et1lzBqBgInE2Jgu1Yer2s7NuNEaXuIu+KfhQtEeb/Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787835728; c=relaxed/simple; bh=Y8RgurfPgkToB5qMXabE2bBvnM3Q8FiXTDqO2IyEqa0=; h=From:Subject:To:Cc:In-Reply-To:References:Content-Type:Date: Message-Id; b=t3rQhRLnjeuBnhxGOdbc4mI3YhR9YaEqo+VlU+piA2Bo/o+JxqbijI9b2QgP28KAfAC68KlLwP2h5DhIWAa3XaBsV2FSp3I3HlJRgTMjE6Nq53z/Nd8SZ02PYq/hxvDxkaHgcZtyOJ4AQqDIr1KZ973LpGo/WouoIbiwFqhgY5U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=OecAgXz/; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="OecAgXz/" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C5A911F000E9; Thu, 27 Aug 2026 13:01:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1787835718; bh=YdfpP6ySX49rYP5/u6cm4keUyyS50dFYDrmTVZtzD/k=; h=From:Subject:Reply-To:To:Cc:In-Reply-To:References:Date; b=OecAgXz/cXIrm+EXiDc67MRF7NlImzqS12MyE8mWIAWMxLERXMnf9K4uM14p11e3r dFl9VcmtVu6at23/+izP+M0NarJ+tuPMxi+i1JLOP5W4kD1AbjI7xl21MA+mgp08H6 atdZs/jTqLtvogNPYe63x3aAncduVp1cPElgWcKYwFxyyvXFVbGERErTiXJ0QeVT1+ Yh0sDTlDQrC69RUXu8RDYRltVh4Y8cT3lgUSWXw8M25Iy5iwszCodQBE2nYbINxHZb bI6UHDSgm0QZAwPQFphi/ssAFB1eTQJgahjZLQiQDQOiViSL85x14ySmthLEyZ85w+ wBWqq57LKzUYw== From: sashiko-bot@kernel.org Subject: Re: [PATCH] fs/ext4: fix ABBA deadlock in ext4_rmdir() Reply-To: sashiko-reviews@lists.linux.dev To: "Sergey Senozhatsky" Cc: linux-ext4@vger.kernel.org, tytso@mit.edu In-Reply-To: <20260827125158.4030598-1-senozhatsky@chromium.org> References: <20260827125158.4030598-1-senozhatsky@chromium.org> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Date: Thu, 27 Aug 2026 13:01:57 +0000 Message-Id: <20260827130157.C5A911F000E9@smtp.kernel.org> Precedence: bulk X-Mailing-List: linux-ext4@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: > We observe the following ABBA deadlock (casefolding enabled): >=20 > INFO: task jbd2/dm-13-8:447 blocked for more than 720 seconds. > task:jbd2/dm-13-8 state:D stack:0 pid:447 tgid:447 ppid:2 > Call Trace: > > __schedule+0xc2c/0xe60 > schedule+0x40/0xe0 > jbd2_journal_wait_updates+0x8f/0xf0 > jbd2_journal_commit_transaction+0x321/0x1850 > kjournald2+0xa9/0x230 > kthread+0x226/0x2a0 > ret_from_fork+0x101/0x1e0 > ret_from_fork_asm+0x1a/0x30 >=20 > [ ... ] >=20 > Fixes: b886ee3e778e ("ext4: Support case-insensitive file name lookups") > Co-developed-by: Sarthak Kukreti > Signed-off-by: Sarthak Kukreti > Signed-off-by: Sergey Senozhatsky Sashiko has reviewed this patch and found no issues. It looks great! --=20 Sashiko AI review =C2=B7 https://sashiko.dev/#/patchset/20260827125158.4030= 598-1-senozhatsky@chromium.org?part=3D1