Public bug reported:

During 22.04 boot, a 2P 192core system(family 1Ah) system shows the
following vmalloc error message. Booting 24.04 does not exibit this
problem.

[   12.152128] audit: type=1400 audit(1723755871.099:11): apparmor="STATUS" 
operation="profile_load" profile="unconfined" 
name="/usr/lib/NetworkManager/nm-dhcp-helper" pid=8216 comm="apparmor_parser"
[   12.164407] systemd-udevd: vmalloc error: size 1036288, vm_struct allocation 
failed, mode:0xcc0(GFP_KERNEL), nodemask=(null),cpuset=/,mems_allowed=0-1
[   12.164420] CPU: 492 PID: 8257 Comm: systemd-udevd Not tainted 
5.15.0-117-generic #127-Ubuntu


This was fixed by a patch series from David Hildenbrand upstream:

https://lore.kernel.org/all/20230414050836.1984746-1-mcg...@kernel.org/T/#u


(youngest commit first)
064f4536d139 module: avoid allocation if module is already present and ready
df3e764d8e5c module: add debug stats to help identify memory pressure
f71afa6a4201 module: extract patient module check into helper
430bb0d1c337 module: fix kmemleak annotations for non init ELF sections


https://lore.kernel.org/all/20230524213620.3509138-1-mcg...@kernel.org/T/#u

(youngest commit first)
8660484ed1cf module: add debugging auto-load duplicate module support
df3e764d8e5c module: add debug stats to help identify memory pressure

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/2080663

Title:
  Ubuntu 22.04 generic kernel exhibits vmalloc error and exc_page_fault

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