Date: Wed, 14 Feb 2024 19:50:20 +0000 From: bugzilla-noreply@freebsd.org To: wireless@FreeBSD.org Subject: [Bug 263613] iwlwifi0 on framework laptop crashes (kernel panic) when setting IP Message-ID: <bug-263613-21060-qIz09ODkxP@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-263613-21060@https.bugs.freebsd.org/bugzilla/> References: <bug-263613-21060@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D263613 --- Comment #37 from commit-hook@FreeBSD.org --- A commit in branch main references this bug: URL: https://cgit.FreeBSD.org/src/commit/?id=3D2ac8a2189ac6707f48f77ef2e36baf696= a0d2f40 commit 2ac8a2189ac6707f48f77ef2e36baf696a0d2f40 Author: Bjoern A. Zeeb <bz@FreeBSD.org> AuthorDate: 2024-02-03 16:33:56 +0000 Commit: Bjoern A. Zeeb <bz@FreeBSD.org> CommitDate: 2024-02-14 19:47:53 +0000 LinuxKPI: 802.11: band-aid for invalid state changes after (*iv_update_= bss) With firmware based solutions we cannot just jump from an active session to a new iv_bss node without tearing down state for the old and bringing up the new node. This likely used to work on softmac based cards/drive= rs where one could essentially set the state and fire at will. We track (*iv_update_bss) calls from net80211 and set a local flag that we are out of synch and do not allow any further operations up the state machine until we hit INIT or SCAN. That means someone will take the st= ate down, clean up firmware state and then we can join again and build up state. Apparently this problem has been "known" for a while as native iwm(4) a= nd others have similar workarounds (though less strict) and can be equally pestered into bad states. For LinuxKPI all the KASSERTs just massively brought this problem out. The solution will be some rewrites in net802= 11. Until then, try to keep us more stable at least and not die on second join1() calls triggered by service netif start wlan0 and similar. PR: 271979, 271988, 275255, 263613, 274003 Sponsored by: The FreeBSD Foundation (2023, partial) MFC after: 3 days Reviewed by: cc Differential Revision: https://reviews.freebsd.org/D43725 sys/compat/linuxkpi/common/src/linux_80211.c | 309 +++++++++++++++++++----= ---- sys/compat/linuxkpi/common/src/linux_80211.h | 2 + 2 files changed, 216 insertions(+), 95 deletions(-) --=20 You are receiving this mail because: You are on the CC list for the bug.=
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