From: Chris Bainbridge <chris.bainbridge@gmail.com>
To: emmanuel.grumbach@intel.com
Cc: johannes.berg@intel.com, miriam.rachel.korenblit@intel.com,
linux-wireless@vger.kernel.org, regressions@lists.linux.dev
Subject: [REGRESSION] iwlwifi IO_PAGE_FAULT and Master Disable Timed Out
Date: Fri, 31 Jul 2026 18:04:54 +0100 [thread overview]
Message-ID: <amzVtgQb2p-_nShU@debian.local> (raw)
Hi,
0eaa1f245ac0 ("wifi: iwlwifi: mvm: don't support the reset handshake for
old firmwares") introduced an intermittent boot regression on my laptop:
[ 15.974991] iwlwifi 0000:01:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x000a address=0xbe9f5000 flags=0x0000]
[ 15.976184] iwlwifi 0000:01:00.0: AMD-Vi: Event logged [IO_PAGE_FAULT domain=0x000a address=0xbe9f5400 flags=0x0000]
[ 15.978501] iwlwifi 0000:01:00.0: Master Disable Timed Out, 100 usec
The commit only contains:
+ /* Those firmware versions claim to support the fw_reset_handshake
+ * but they are buggy.
+ */
+ if (IWL_UCODE_MAJOR(mvm->fw->ucode_ver) <= 77)
+ trans->conf.fw_reset_handshake = false;
The if condition is evaluating true on my laptop despite using firmware
ty-a0-gf-a0-89.ucode. So I suspect this is not the correct way to check
the firmware version?
Also comment #21 on bugzilla.kernel.org bug #220600 (which this commit
was supposed to fix) reports the same "Master Disable Timed Out" error
(although no IO_PAGE_FAULTS, probably the bad memory access is not
caught without iommu=strict).
#regzbot introduced: 0eaa1f245ac03ed0c6394159360532726f666811
reply other threads:[~2026-07-31 17:04 UTC|newest]
Thread overview: [no followups] expand[flat|nested] mbox.gz Atom feed
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=amzVtgQb2p-_nShU@debian.local \
--to=chris.bainbridge@gmail.com \
--cc=emmanuel.grumbach@intel.com \
--cc=johannes.berg@intel.com \
--cc=linux-wireless@vger.kernel.org \
--cc=miriam.rachel.korenblit@intel.com \
--cc=regressions@lists.linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox