From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mx5.sberdevices.ru (mx5.sberdevices.ru [95.181.183.35]) (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 D704A2FF170 for ; Fri, 10 Apr 2026 10:31:32 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.181.183.35 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775817094; cv=none; b=uuo7QyU6Tc4iYIsnj/PUySejXy9Nh9emL3jZL9EoQejU6LD6woOFjc1F9o2ZSfyoUlnIzW6loOmhz4oHGV9YhVQmqb1YRHKiCMJ9jMkfJJtktzOwRvMabwVQ/PSfxXrHCUNK2F05lkn9qzsjySPutNmIlXnc+KWyacZXxh7ZsAk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775817094; c=relaxed/simple; bh=X+ynukjBcYvK7z7yOx1UG4dcwRWJBXfCxyMHRrNDww8=; h=Message-ID:Date:MIME-Version:Subject:To:CC:References:From: In-Reply-To:Content-Type; b=uhrkJtp2I+RS1HeHP4dY1InIOnbyj0Kul7XD4wZTrQBNf8E3dIDYLYQXokP6lyccArDkurYSYj/BUz8e5hME34XcWQHCcBFAJlzp3fWk4/4ouyAY+8nxeesDuTKILBYTRF9KTcPJNCOznQ2DJeEjfDAkjH0X7+pqj4GsHvuRWiQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=salutedevices.com; spf=pass smtp.mailfrom=salutedevices.com; dkim=pass (2048-bit key) header.d=salutedevices.com header.i=@salutedevices.com header.b=ABDkcFX9; arc=none smtp.client-ip=95.181.183.35 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=salutedevices.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=salutedevices.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=salutedevices.com header.i=@salutedevices.com header.b="ABDkcFX9" Received: from p-antispam-ksmg-gc-msk01.sberdevices.ru (localhost [127.0.0.1]) by mx5.sberdevices.ru (Postfix) with ESMTP id 19633240005; Fri, 10 Apr 2026 13:31:31 +0300 (MSK) DKIM-Filter: OpenDKIM Filter v2.11.0 mx5.sberdevices.ru 19633240005 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=salutedevices.com; s=post; t=1775817091; bh=IXyHCd9AOYXYmxHIgzgKNjoBsLYDJipecz3jjYfSl30=; h=Message-ID:Date:MIME-Version:Subject:To:From:Content-Type:From; b=ABDkcFX9EjAkN3KnLdB+49ujm4uZA9vxWxUNT+zXsWL+zKo+A+yrOzkq6cdvwVcDJ j1n5FTu6rFcp9uJYs0v4K5gdBMqWX4u9rM4kf21vzbAo72CJtqjGvyP6y7q+eCLheo zQ4THXmbym1OfXWoOoiytex5280O3wKTFEwt1uEvoCGs72uDqkQaydZYZqCrCiMfGk GkbW9X1IyvdnN/5Hp4Lw9wQH8OyWkL320IUHyoWzc6rLIyRW6rxf/3pGPGxx2+ZuBF D9h8otp/TAJWTxnUZzUhXY1xfISnEgqHHuI14P2Gs86IHtFHsnkmvj67R4D1faKFiR mm6GUfoqsqtXw== Received: from smtp.sberdevices.ru (p-exch-cas-a-m1.sberdevices.ru [172.24.201.216]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "sberdevices.ru", Issuer "R12" (not verified)) by mx5.sberdevices.ru (Postfix) with ESMTPS; Fri, 10 Apr 2026 13:31:30 +0300 (MSK) Message-ID: <4bf410a7-1e06-4f29-bcb7-2bc14874493d@salutedevices.com> Date: Fri, 10 Apr 2026 13:31:29 +0300 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: erofs pointer corruption and kernel crash Content-Language: ru To: Gao Xiang CC: , , , References: <4a2f3801-fac1-42fe-ae75-da315822e088@salutedevices.com> <9d8a073a-982e-4c7b-9445-623941a16b05@salutedevices.com> <16ea58e8-43b7-439b-91db-9f87d2fb2b84@linux.alibaba.com> <5301be8f-4b2e-4f1d-a90b-91da00f98994@salutedevices.com> <198c23d4-6b8b-4d13-a090-9b01c5d97698@linux.alibaba.com> From: Arseniy Krasnov In-Reply-To: <198c23d4-6b8b-4d13-a090-9b01c5d97698@linux.alibaba.com> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8bit X-ClientProxiedBy: p-exch-cas-a-m2.sberdevices.ru (172.24.201.210) To p-exch-cas-a-m1.sberdevices.ru (172.24.201.216) X-KSMG-AntiPhishing: NotDetected X-KSMG-AntiSpam-Auth: dkim=none X-KSMG-AntiSpam-Envelope-From: avkrasnov@salutedevices.com X-KSMG-AntiSpam-Info: LuaCore: 98 0.3.98 ca9d2f3beca9ca2a85e178af9d8e97d5fa2c38a3, {Tracking_from_domain_doesnt_match_to}, salutedevices.com:7.1.1;127.0.0.199:7.1.2;d41d8cd98f00b204e9800998ecf8427e.com:7.1.1;smtp.sberdevices.ru:7.1.1,5.0.1, FromAlignment: s X-KSMG-AntiSpam-Interceptor-Info: scan successful X-KSMG-AntiSpam-Lua-Profiles: 202171 [Apr 10 2026] X-KSMG-AntiSpam-Method: none X-KSMG-AntiSpam-Rate: 0 X-KSMG-AntiSpam-Status: not_detected X-KSMG-AntiSpam-Version: 6.1.1.22 X-KSMG-AntiVirus: Kaspersky Secure Mail Gateway, version 2.1.1.8310, bases: 2026/04/09 21:06:00 #28382314 X-KSMG-AntiVirus-Status: NotDetected, skipped X-KSMG-KATA-Status: Not Scanned X-KSMG-LinksScanning: NotDetected X-KSMG-Message-Action: skipped X-KSMG-Rule-ID: 5 10.04.2026 13:22, Gao Xiang пишет: > > > On 2026/4/10 18:10, Arseniy Krasnov wrote: >> >> >> 10.04.2026 13:06, Gao Xiang пишет: >>> >>> >>> On 2026/4/10 18:03, Arseniy Krasnov wrote: >>>> >>>> >>>> 10.04.2026 13:01, Gao Xiang пишет: >>>>> >>>>> >>>>> On 2026/4/10 17:59, Arseniy Krasnov wrote: >>>>>> >>>>>> >>>>>> 10.04.2026 12:20, Gao Xiang wrote: >>>>>>> >>>>>>> >>>>>>> On 2026/4/10 16:55, Arseniy Krasnov wrote: >>>>>>>> >>>>>>>> >>>>>>> >>>>>>> ... >>>>>>> >>>>>>>>>> >>>>>>>>>> BR2_TARGET_ROOTFS_EROFS=y >>>>>>>>>> BR2_TARGET_ROOTFS_EROFS_CUSTOM_COMPRESSION=y >>>>>>>>>> BR2_TARGET_ROOTFS_EROFS_COMPRESSION_ALGORITHMS="zstd,22 --max-extent-bytes 65536 -E48bit" >>>>>>> >>>>>>> btw, may I ask what's the erofs-utils version? >>>>>>> erofs-utils 1.9? >>>>>> >>>>>> We have 1.8.5 erofs-utils >>>>> >>>>> 1.8.5 shouldn't have `-E48bit` support, that is my question. >>>> >>>> You mean to try to reproduce with 1.9 utils ? >>> >>> Nope, I meant >>> >>> BR2_TARGET_ROOTFS_EROFS_COMPRESSION_ALGORITHMS="zstd,22 --max-extent-bytes 65536 -E48bit" >>> >>> is invalid in erofs-utils 1.8.5. >>> >>> If you were using erofs-utils 1.9+, that may be due to >>> the new `-E48bit`; >>> >>> but you said you are using erofs-utils 1.8.5, that makes >>> me feel confused. >>> >> >> Ah, ok, so need to debug it at kernel side as we talked before. > > Sigh, you don't answer my questions: > > 1. so are you using `-E48bit` and newer erofs-utils verison? > Here is exact version which is built in buildroot: > bin/mkfs.erofs erofs: missing argument: FILE mkfs.erofs 1.8.10 Try 'bin/mkfs.erofs --help' for more information. > 2. Is "EXPERIMENTAL 48-bit layout support in use. Use at your >    own risk!" shown when mounting? Yes > dmesg | grep EXP [ 3.003188][ T1] erofs (device dm-0): EXPERIMENTAL 48-bit layout support in use. Use at your own risk! Thanks > > Thanks, > Gao Xiang