[TLDR: I'm adding this report to the list of tracked Linux kernel regressions; the text you find below is based on a few templates paragraphs you might have encountered already in similar form. See link in footer if these mails annoy you.] On 18.01.23 22:24, sebastian.kloska@xxxxxxxx wrote: > > Hardware: Acer Swift-1 SF114-34-P6U1 > SD Host controller: Intel Corporation Device 4dc4 (rev 01) 8086:4dc4 > eMMC: Kingston A29128 > > * A couple of seconds after boot access to the eMMC is completely > blocked. Can be triggered by extensive I/O (e.g, with badblocks -w) > > * Tested with stable branch linux-5.14.21 vs. linux-5.15.1 > Latest highest version including the bug is a fedora 6.1.6 > > * Spiked the code with a lot of pr_debug messages. As a side effect the > driver > seems to be much more stable, so to me it appears like a timing issue > where > the driver fails to wait for a specific state change which seems to > appear > less often when slowed down by logging > > * Would love to have a decent reference documentation to the SD Controller > especially a detailed description of the behavior of the register map in > mmc/host/cqhci.h All intel documents I could find seem to describe > similar but not quite identical register maps > [...] Thanks for the report. To be sure the issue doesn't fall through the cracks unnoticed, I'm adding it to regzbot, the Linux kernel regression tracking bot: #regzbot ^introduced v5.14..v5.15 #regzbot title mmc: eMMC is completely blocked a few seconds after boot #regzbot ignore-activity This isn't a regression? This issue or a fix for it are already discussed somewhere else? It was fixed already? You want to clarify when the regression started to happen? Or point out I got the title or something else totally wrong? Then just reply and tell me -- ideally while also telling regzbot about it, as explained by the page listed in the footer of this mail. Developers: When fixing the issue, remember to add 'Link:' tags pointing to the report (the parent of this mail). See page linked in footer for details. Ciao, Thorsten (wearing his 'the Linux kernel's regression tracker' hat) -- Everything you wanna know about Linux kernel regression tracking: https://linux-regtracking.leemhuis.info/about/#tldr That page also explains what to do if mails like this annoy you.
