** Also affects: linux-oem-6.5 (Ubuntu)
Importance: Undecided
Status: New
** Changed in: linux-oem-6.5 (Ubuntu)
Status: New => Invalid
** Changed in: linux-oem-6.5 (Ubuntu Lunar)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/2028746
Title:
Fix UBSAN in Intel EDAC driver
Status in HWE Next:
New
Status in linux package in Ubuntu:
Fix Released
Status in linux-oem-6.1 package in Ubuntu:
Invalid
Status in linux-oem-6.5 package in Ubuntu:
Invalid
Status in linux source package in Jammy:
Won't Fix
Status in linux-oem-6.1 source package in Jammy:
Confirmed
Status in linux-oem-6.5 source package in Jammy:
New
Status in linux source package in Lunar:
Fix Committed
Status in linux-oem-6.1 source package in Lunar:
Invalid
Status in linux-oem-6.5 source package in Lunar:
Invalid
Bug description:
[Impact]
UBSAN complains shift-out-of-bounds:
[ 13.875276] UBSAN: shift-out-of-bounds in drivers/edac/skx_common.c:369:16
[ 13.875279] shift exponent -66 is negative
[Fix]
Skip the absent memory controllers so ~0 won't be used.
[Test]
Boot system with patch applied, no more UBSAN error in dmesg.
[Where problems could occur]
The fix itself is trivial, however the dependency patches may bring
behavioural changes as new platform support is also added.
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