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Sun, 26 Jan 2025 20:10:41 GMT (envelope-from bugzilla-noreply@freebsd.org) Received: (from www@localhost) by kenobi.freebsd.org (8.15.2/8.15.2/Submit) id 50QKAf5f069795 for wireless@FreeBSD.org; Sun, 26 Jan 2025 20:10:41 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: wireless@FreeBSD.org Subject: [Bug 280546] iwlwifi panic in BT COEX code Date: Sun, 26 Jan 2025 20:10:42 +0000 X-Bugzilla-Reason: CC X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: wireless X-Bugzilla-Version: 15.0-CURRENT X-Bugzilla-Keywords: X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: robin.haberkorn@googlemail.com X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bz@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Discussions List-Archive: https://lists.freebsd.org/archives/freebsd-wireless List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-wireless@freebsd.org Sender: owner-freebsd-wireless@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D280546 Robin Haberkorn changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |robin.haberkorn@googlemail. | |com --- Comment #10 from Robin Haberkorn --- I just had the same crash apparently and will upload my logs as well. It happened on 14.2-RELEASE. And yes, I do use Bluetooth and there are quite a= few Bluetooth devices around. kgdb quickly reveals a NULL-pointer dereference (chanctx_conf->def.chan =3D= =3D NULL). But I will spare you the details since bz@freebsd.org did already gu= ess it from the previous report. I will happily do some more debugging with my vmcore on your request. I am not really willing to share the vmcore file, though. I don't understand this code enough to see whether it is valid that this pointer can be NULL. At least it is checked in other functions like iwl_mvm_bt_coex_notif_handle(). So I would suggest to simply add another NULL-pointer check to the existing if-statement in iwl_mvm_bt_notif_per_lin= k(). And I would add the same to iwl_get_coex_type() as well. On the other hand, this pointer becoming NULL might have a deeper meaning a= nd point to another problem. But even then, it could make sense to add an assertion after fixing the underlying problem. --=20 You are receiving this mail because: You are on the CC list for the bug.=