[Bug 215389] pagealloc: memory corruption at building glibc-2.33 and running its' testsuite

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=215389

--- Comment #9 from Erhard F. (erhard_f@mailbox.org) ---
Created attachment 300354
  --> https://bugzilla.kernel.org/attachment.cgi?id=300354&action=edit
dmesg (5.10-rc2 with ADB_PMU disabled, PowerMac G4 DP)

Took a little time but I double checked the results (one time using distcc '-j8
-l2', one time native '-j3') to be sure:

ADB_PMU disabled, VMAP_STACK disabled  ...  "neverending build"
ADB_PMU enabled,  VMAP_STACK disabled  ...  works ok
ADB_PMU disabled, VMAP_STACK enabled   ...  "neverending build"
ADB_PMU enabled,  VMAP_STACK enabled   ...  memory corruption

Version used was git db972a3787d12b1ce9ba7a31ec376d8a79e04c47, which is the one
before a last 'git bisect bad' ends the git bisect.

The "neverending builds" happen when I run this kernel with ADB_PMU disabled.
The G4 runs for several hours building (?) without reaching the glibc test
stage. With ADB_PMU enabled I get a pass or memory corruption much earlier.

Also without ADB_PMU I get a kernel panic when rebooting or shutting down the
G4. Also the G4 does not reboot/poweroff in this case, I need to switch it off
manually.

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