{"id":52142,"date":"2023-05-31T13:30:11","date_gmt":"2023-05-31T13:30:11","guid":{"rendered":"https:\/\/www.threatshub.org\/blog\/xfs-bug-in-linux-kernel-6-3-3-coincides-with-sgi-code-comeback\/"},"modified":"2023-05-31T13:30:11","modified_gmt":"2023-05-31T13:30:11","slug":"xfs-bug-in-linux-kernel-6-3-3-coincides-with-sgi-code-comeback","status":"publish","type":"post","link":"https:\/\/www.threatshub.org\/blog\/xfs-bug-in-linux-kernel-6-3-3-coincides-with-sgi-code-comeback\/","title":{"rendered":"XFS bug in Linux kernel 6.3.3 coincides with SGI code comeback"},"content":{"rendered":"<p>SGI may be no more but people are still using its code \u2013 and some more of that code may be about to enjoy a revival.<\/p>\n<p>Although <a href=\"https:\/\/www.theregister.com\/2005\/11\/02\/sgi_penny_stock\/\">Silicon Graphics was delisted back in 2005<\/a>, and <a href=\"https:\/\/www.theregister.com\/2009\/05\/11\/rackable_becomes_sgi\/\">its name taken over by Rackable in 2009<\/a>, much of its code is still very much around, in active use, and attracting interest. In December, we reported that <a href=\"https:\/\/www.theregister.com\/2022\/12\/20\/kernel_62_fs_improvements\/\">Linux kernel 6.2 would receive some bug fixes to XFS<\/a>, the filesystem from SGI&#8217;s IRIX proprietary Unix. <a href=\"https:\/\/www.theregister.com\/1999\/08\/12\/sgi_releases_xfs_file_system\/\">SGI donated the filesystem to the Linux kernel<\/a> in 1999.<\/p>\n<p>Well, if you&#8217;re on 6.2, you may want to stay there for now. A <a href=\"https:\/\/www.phoronix.com\/news\/Linux-6.3-XFS-Metadata-Corrupt\" rel=\"nofollow\">bug<\/a> in XFS in kernel 6.3.3 has <a href=\"https:\/\/www.spinics.net\/lists\/linux-xfs\/msg71084.html\" rel=\"nofollow\">shown up<\/a>. It only corrupts metadata, rather than file data itself, but that&#8217;s still nasty and can stop a system from booting even if the root partition is not on XFS. The Fedora team <a href=\"https:\/\/bugzilla.redhat.com\/show_bug.cgi?id=2208553\" rel=\"nofollow\">investigated<\/a> and traced it to a single line of code that was <a href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/fs\/xfs\/libxfs\/xfs_bmap.c?id=9419092fb2630c30e4ffeb9ef61007ef0c61827a\" rel=\"nofollow\">deleted<\/a> in an attempt to fix a different issue. So it&#8217;s been found and fixed, but as several commentators have <a href=\"https:\/\/news.ycombinator.com\/item?id=36113828\" rel=\"nofollow\">observed<\/a>, this deletion shouldn&#8217;t really have been let through at all.<\/p>\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"top\" data-raptor=\"condor\" data-xsm=\",fluid,mpu,\" data-sm=\",fluid,mpu,\" data-md=\",fluid,mpu,\"> <noscript> <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=2&amp;c=2ZHdV4WY-2TEAQYTqB5aNLQAAAEk&amp;t=ct%3Dns%26unitnum%3D2%26raptor%3Dcondor%26pos%3Dtop%26test%3D0\" target=\"_blank\" rel=\"noopener\"> <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=2&amp;c=2ZHdV4WY-2TEAQYTqB5aNLQAAAEk&amp;t=ct%3Dns%26unitnum%3D2%26raptor%3Dcondor%26pos%3Dtop%26test%3D0\" alt> <\/a> <\/noscript> <\/div>\n<p>This issue is <a href=\"https:\/\/lore.kernel.org\/lkml\/2023053044-mummified-paddle-862e@gregkh\/T\/#m2ec9689a1e82e8fd5d58eb340cbd1b350c6e52ec\" rel=\"nofollow\">fixed<\/a> in today&#8217;s kernel 6.3.5 \u2013 meaning that the kernel developers have reinstated the deleted line. XFS users should settle for nothing earlier, in the 6.3 series at least.<\/p>\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"top\" data-raptor=\"falcon\" data-xmd=\",fluid,mpu,leaderboard,\" data-lg=\",fluid,mpu,leaderboard,\" data-xlg=\",fluid,billboard,superleaderboard,mpu,leaderboard,\" data-xxlg=\",fluid,billboard,superleaderboard,brandwidth,brandimpact,leaderboard,mpu,\"> <noscript> <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44ZHdV4WY-2TEAQYTqB5aNLQAAAEk&amp;t=ct%3Dns%26unitnum%3D4%26raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" target=\"_blank\" rel=\"noopener\"> <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=4&amp;c=44ZHdV4WY-2TEAQYTqB5aNLQAAAEk&amp;t=ct%3Dns%26unitnum%3D426raptor%3Dfalcon%26pos%3Dmid%26test%3D0\" alt> <\/a> <\/noscript> <\/div>\n<div class=\"adun_eagle_desktop_story_wrapper\">\n<div aria-hidden=\"true\" class=\"adun\" data-pos=\"mid\" data-raptor=\"eagle\" data-xxlg=\",mpu,dmpu,\"> <noscript> <a href=\"https:\/\/pubads.g.doubleclick.net\/gampad\/jump?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=3&amp;c=33ZHdV4WY-2TEAQYTqB5aNLQAAAEk&amp;t=ct%3Dns%26unitnum%3D3%26raptor%3Deagle%26pos%3Dmid%26test%3D0\" target=\"_blank\" rel=\"noopener\"> <img decoding=\"async\" src=\"https:\/\/pubads.g.doubleclick.net\/gampad\/ad?co=1&amp;iu=\/6978\/reg_security\/front&amp;sz=300x50%7C300x100%7C300x250%7C300x251%7C300x252%7C300x600%7C300x601&amp;tile=3&amp;c=33ZHdV4WY-2TEAQYTqB5aNLQAAAEk&amp;t=ct%3Dns%26unitnum%3D3%26raptor%3Deagle%26pos%3Dmid%26test%3D0\" alt> <\/a> <\/noscript> <\/div>\n<\/p><\/div>\n<p>XFS has faded somewhat into obscurity in recent years, but in the past it has been the default filesystem in more than one enterprise distro. It&#8217;s also the basis of <a href=\"https:\/\/www.theregister.com\/2022\/10\/24\/daos_22_stratis_33\/\">Red Hat&#8217;s next-generation Stratis storage engine<\/a>, which combines the XFS disk format with ZFS-style enhanced volume management. (<em>The Reg<\/em> FOSS desk hasn&#8217;t used either logical-volume management system in anger in years, but distantly recalls preferring the <a href=\"https:\/\/evms.sourceforge.net\/\" rel=\"nofollow\">EVMS<\/a> tooling to the alternative <a href=\"https:\/\/sourceware.org\/lvm2\/\" rel=\"nofollow\">LVM2<\/a> system, which <a href=\"https:\/\/lwn.net\/Articles\/14714\/\" rel=\"nofollow\">won<\/a> the favor of the kernel developers and got built in instead.)<\/p>\n<p>In other SGI-related matters, OSNews <a href=\"https:\/\/www.osnews.com\/story\/136178\/irix-community-proposes-to-reverse-engineer-the-last-32-bit-irix-kernel\/\" rel=\"nofollow\">reports<\/a> that a surprising project went public last week: an <a href=\"https:\/\/forums.irixnet.org\/thread-3941.html\" rel=\"nofollow\">effort<\/a> to reverse engineer the 32-bit version of Silicon Graphics&#8217; IRIX kernel. The final 32-bit version of IRIX was version 5.3, and this is what the team hopes to recreate in open source form. Although IRIX then went 64-bit and made it to release 6.5.30, the team points out that the 32-bit version was approximately one-third of the size and complexity, as well as offering better backwards compatibility, including with IRIX 4.x. Better still, the project already has a commercial sponsorship, to the tune of some $6,500. The project lead estimates a time frame of 18 to 24 months. We fear that both the timeline and the budget strike us as extremely optimistic.<\/p>\n<p>The problem with trying to reimplement any part of IRIX that wasn&#8217;t expressly published as open source is that somebody still owns it. SGI, as in The Company Formerly Known As Rackable, <a href=\"https:\/\/www.theregister.com\/2016\/08\/11\/hpe_buys_sgi\/\">has been part of HP Enterprise<\/a> since 2016. HPE also owns its own UNIX, HP-UX, but that has no future as recent versions <em>only<\/em> run on Itanium. HPE did <a href=\"https:\/\/www.theregister.com\/2012\/05\/23\/hp_project_blackbird_redwood_hp_ux\/\">have a plan to port HP-UX to x86-64<\/a>, but axed &#8220;Project Redwood&#8221; over a decade ago. As <a href=\"https:\/\/www.theregister.com\/2021\/07\/30\/end_of_itanium_shipments\/\">there is no new hardware being made<\/a> that the OS can run on, HP-UX is effectively as dead as IRIX.<\/p>\n<p>Unlike Itanic, at least one derivative of IRIX&#8217;s native platform still survives. SGI used MIPS processors, and <a href=\"https:\/\/www.theregister.com\/2022\/11\/21\/chinese_loongson_chips\/\">the Chinese Loongson architecture<\/a> is extremely close to MIPS. We wish the IRIX-32 project all possible luck\u2026 but its argument that it&#8217;s out of patent and is therefore safe to recreate sounds less than totally watertight to us. We&#8217;ve asked HPE for its view.<\/p>\n<div class=\"CaptionedImage Center\" readability=\"7\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/regmedia.co.uk\/2017\/06\/05\/maxx_desktop.jpg?x=442&amp;y=293&amp;infer_y=1\" alt=\"Maxx Desktop SGI Indigo Magic Desktop clone for Linux\" title=\"Maxx Desktop SGI Indigo Magic Desktop clone for Linux\" height=\"293\" width=\"442\"><\/p>\n<p class=\"text_center\">Maxx Desktop SGI Indigo Magic Desktop clone for Linux<\/p>\n<\/div>\n<p>There&#8217;s a great deal of nostalgia for Silicon Graphics and its products out there. As we covered a while ago, there is also a project which has <a href=\"https:\/\/www.theregister.com\/2017\/06\/05\/maxx_interactive_desktop_revives_sgi_irix_and_magic_desktop\/\">reimplemented SGI&#8217;s Magic desktop on Linux<\/a>, under the name <a href=\"https:\/\/docs.maxxinteractive.com\/\" rel=\"nofollow\">Maxx Interactive Desktop<\/a>. Since the last time that <em>The Reg<\/em> FOSS Desk looked at it, the project&#8217;s website has been updated, and it has installation instructions for versions of Ubuntu recent enough to still be in support. We hope to take a look at it soon. \u00ae<\/p>\n<h3 class=\"crosshead\">Bootnote<\/h3>\n<p>This <a href=\"https:\/\/www.theregister.com\/2015\/03\/18\/sir_terry_pratchett_http_header\/\">use of G.N.U.<\/a> \u2013 no, not <em>that<\/em> <a href=\"https:\/\/www.gnu.org\/\" rel=\"nofollow\">GNU<\/a> \u2013 is a small tribute to the late great Sir Terry Pratchett.<\/p>\n<p> READ MORE <a href=\"https:\/\/go.theregister.com\/feed\/www.theregister.com\/2023\/05\/31\/bugs_in_ex_sgi_xfs\/\">HERE<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>G.N.U. Silicon Graphics: a company is not dead while its name is still spoken SGI may be no more but people are still using its code \u2013 and some more of that code may be about to enjoy a revival.\u2026 READ MORE HERE&#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_layout":"default_layout","footnotes":""},"categories":[63],"tags":[],"class_list":["post-52142","post","type-post","status-publish","format-standard","hentry","category-the-register"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>XFS bug in Linux kernel 6.3.3 coincides with SGI code comeback 2026 | ThreatsHub Cybersecurity News<\/title>\n<meta name=\"description\" content=\"ThreatsHub Cybersecurity News | ThreatsHub.org | Cloud Security &amp; Cyber Threats Analysis Hub. 100% Free OSINT Threat Intelligent 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