Public bug reported:
SRU Justification
[Impact]
When stress-ng is used to run directory creation stress tests on eMMC,
the system locks up. This is highly reproducible on ext4 when discard is
enabled when mounting the filesystem (sudo DIR_WORKER_COUNT=4
run_disk_stress_ng.sh mmcblk0 60).
[Fix]
Pull the fix from upstream Raspberry Pi tree (rpi-6.18.y branch):
- 66d46640d0a54 mmc: don't reference requests after issuing them
[Test Plan]
* Compile tested
* Boot tested
* No impacts to existing features found
Install the built packages and running the same stress test should no
longer result in hangs and lockups. See attached script for testing.
[Regression potential]
Relatively low, as change is a bug fix from upstream.
** Affects: linux-raspi (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "run_disk_stress_ng.sh"
https://bugs.launchpad.net/bugs/2160602/+attachment/5981755/+files/run_disk_stress_ng.sh
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https://bugs.launchpad.net/bugs/2160602
Title:
mmc: System hangs when dir creation is stress tested on eMMC
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