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Bug#1104460: [regression 6.1.y] discard/TRIM through RAID10 blocking (was: Re: Bug#1104460: linux-image-6.1.0-34-powerpc64le: Discard broken) with RAID10: BUG: kernel tried to execute user page (0) - exploit attempt?

From Moritz Mühlenhoff <jmm@inutil.org>
Newsgroups linux.debian.bugs.dist, linux.debian.kernel
Subject Bug#1104460: [regression 6.1.y] discard/TRIM through RAID10 blocking (was: Re: Bug#1104460: linux-image-6.1.0-34-powerpc64le: Discard broken) with RAID10: BUG: kernel tried to execute user page (0) - exploit attempt?
Date 2025-05-05 14:00 +0200
Message-ID <KJ2Eh-U4I-1@gated-at.bofh.it> (permalink)
References <KHh4J-hmHh-5@gated-at.bofh.it> <KHi0N-hnio-1@gated-at.bofh.it> <KHh4J-hmHh-5@gated-at.bofh.it> <KHi0N-hnio-1@gated-at.bofh.it>
Organization linux.* mail to news gateway

Cross-posted to 2 groups.

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Am Wed, Apr 30, 2025 at 05:55:20PM +0200 schrieb Salvatore Bonaccorso:
> Hi
> 
> We got a regression report in Debian after the update from 6.1.133 to
> 6.1.135. Melvin is reporting that discard/trimm trhough a RAID10 array
> stalls idefintively. The full report is inlined below and originates
> from https://bugs.debian.org/1104460 .

JFTR, we ran into the same problem with a few Wikimedia servers running
6.1.135 and RAID 10: The servers started to lock up once fstrim.service
got started. Full oops messages are available at
https://phabricator.wikimedia.org/P75746

Cheers,
        Moritz

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Bug#1104460: [regression 6.1.y] discard/TRIM through RAID10 blocking (was: Re: Bug#1104460: linux-image-6.1.0-34-powerpc64le: Discard broken) with RAID10: BUG: kernel tried to execute user page (0) - exploit attempt? Salvatore Bonaccorso <carnil@debian.org> - 2025-04-30 18:00 +0200
  Bug#1104460: [regression 6.1.y] discard/TRIM through RAID10 blocking (was: Re: Bug#1104460: linux-image-6.1.0-34-powerpc64le: Discard broken) with RAID10: BUG: kernel tried to execute user page (0) - exploit attempt? Moritz Mühlenhoff <jmm@inutil.org> - 2025-05-05 14:00 +0200
    Bug#1104460: [regression 6.1.y] discard/TRIM through RAID10 blocking (was: Re: Bug#1104460: linux-image-6.1.0-34-powerpc64le: Discard broken) with RAID10: BUG: kernel tried to execute user page (0) - exploit attempt? Salvatore Bonaccorso <carnil@debian.org> - 2025-05-05 18:10 +0200
      Bug#1104460: [regression 6.1.y] discard/TRIM through RAID10 blocking (was: Re: Bug#1104460: linux-image-6.1.0-34-powerpc64le: Discard broken) with RAID10: BUG: kernel tried to execute user page (0) - exploit attempt? Antoine Beaupré <anarcat@debian.org> - 2025-05-05 21:00 +0200
        Bug#1104460: [regression 6.1.y] discard/TRIM through RAID10 blocking (was: Re: Bug#1104460: linux-image-6.1.0-34-powerpc64le: Discard broken) with RAID10: BUG: kernel tried to execute user page (0) - exploit attempt? Salvatore Bonaccorso <carnil@debian.org> - 2025-05-05 22:40 +0200
          Bug#1104460: [regression 6.1.y] discard/TRIM through RAID10 blocking (was: Re: Bug#1104460: linux-image-6.1.0-34-powerpc64le: Discard broken) with RAID10: BUG: kernel tried to execute user page (0) - exploit attempt? Antoine Beaupré <anarcat@debian.org> - 2025-05-05 23:10 +0200
            Bug#1104460: [regression 6.1.y] discard/TRIM through RAID10 blocking Yu Kuai <yukuai1@huaweicloud.com> - 2025-05-06 03:40 +0200
              Bug#1104460: [regression 6.1.y] discard/TRIM through RAID10 blocking Salvatore Bonaccorso <carnil@debian.org> - 2025-05-06 08:10 +0200
                Bug#1104460: [regression 6.1.y] discard/TRIM through RAID10 blocking Antoine Beaupré <anarcat@debian.org> - 2025-05-06 15:20 +0200
    Bug#1104460: [regression 6.1.y] discard/TRIM through RAID10 blocking (was: Re: Bug#1104460: linux-image-6.1.0-34-powerpc64le: Discard broken) with RAID10: BUG: kernel tried to execute user page (0) - exploit attempt? Moritz Mühlenhoff <jmm@inutil.org> - 2025-05-05 19:50 +0200
  Bug#1104460: [regression 6.1.y] discard/TRIM through RAID10 blocking Yu Kuai <yukuai1@huaweicloud.com> - 2025-05-06 03:30 +0200
  Bug#1104460: [regression 6.1.y] discard/TRIM through RAID10 blocking Yu Kuai <yukuai1@huaweicloud.com> - 2025-05-06 03:40 +0200
  Bug#1104460: [regression 6.1.y] discard/TRIM through RAID10 blocking (was: Re: Bug#1104460: linux-image-6.1.0-34-powerpc64le: Discard broken) with RAID10: BUG: kernel tried to execute user page (0) - exploit attempt? Melvin Vermeeren <vermeeren@vermwa.re> - 2025-05-06 17:30 +0200

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