Bug#1050622: linux-source-6.4: regression found upstream making AVX instructions unusable
Package: linux-source-6.4
Version: 6.4.4-3~bpo12+1
Severity: normal
Dear Maintainer,
a certain patch leads to a significant regression making AVX instructions
unusable in the CPUs having them:
https://lore.kernel.org/lkml/202307192135.203ac24e-oliver.sang@intel.com/
a fix is available upstream:
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/arch/x86/kernel/fpu/xstate.c?id=2c66ca3949dc701da7f4c9407f2140ae425683a5
Of course, this fix will be included in the upstream kernel eventually, but
knowing Debian's long release cycle, I think including it as a distribution
patch would make sense.
-- System Information:
Debian Release: 12.1
APT prefers stable-updates
APT policy: (991, 'stable-updates'), (991, 'stable-security'), (991, 'stable'), (99, 'testing'), (90, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 6.4.4-bootes2-p-1000 (SMP w/16 CPU threads; PREEMPT)
Kernel taint flags: TAINT_PROPRIETARY_MODULE, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_DK.UTF-8, LC_CTYPE=en_DK.UTF-8 (charmap=UTF-8), LANGUAGE=en_GB:en_US
Shell: /bin/sh linked to /usr/bin/dash
Init: sysvinit (via /sbin/init)
LSM: AppArmor: enabled
Versions of packages linux-source-6.4 depends on:
ii binutils 2.40-2
ii xz-utils 5.4.1-0.2
Versions of packages linux-source-6.4 recommends:
ii bc 1.07.1-3+b1
ii bison 2:3.8.2+dfsg-1+b1
ii build-essential 12.9
ii cpio 2.13+dfsg-7.1
ii flex 2.6.4-8.2
ii kmod 30+20221128-1
ii libelf-dev 0.188-2.1
ii libssl-dev 3.0.9-1
ii linux-config-6.4 6.4.4-3~bpo12+1
ii rsync 3.2.7-1
Versions of packages linux-source-6.4 suggests:
ii libncurses-dev [ncurses-dev] 6.4-4
ii pkgconf [pkg-config] 1.8.1-1
ii qtbase5-dev 5.15.8+dfsg-11
-- no debconf information
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