[Bug 291120] iwlwifi: iwl_opmode_register panic

From: <bugzilla-noreply_at_freebsd.org>
Date: Fri, 06 Mar 2026 02:52:02 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=291120

--- Comment #2 from commit-hook@FreeBSD.org ---
A commit in branch main references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=551c4cb74a807ceae55288bf273f5cfeb37c7c91

commit 551c4cb74a807ceae55288bf273f5cfeb37c7c91
Author:     Bjoern A. Zeeb <bz@FreeBSD.org>
AuthorDate: 2026-03-05 12:41:46 +0000
Commit:     Bjoern A. Zeeb <bz@FreeBSD.org>
CommitDate: 2026-03-06 02:49:07 +0000

    iwlwifi: mld: move module_init() to SI_ORDER_SECOND

    In FreeBSD the iwlwifi driver is a single kernel module.
    As for iwlwifi/mvm we need to make sure the common "iwlwifi drv" code
    is initialized before trying to register the mld sub-driver
    in order for lists, etc. in the registration code to be initialized.
    We do this by using an extended (FreeBSD specific) version of
    module_init which overrides the order parameter of the SYSINIT.
    Otherwise we can randomly (depending on SYSINIT run order) run into
    a NULL pointer deref panic.

    Sponsored by:   The FreeBSD Foundation
    PR:             291120
    MFC after:      3 days

 sys/contrib/dev/iwlwifi/mld/mld.c | 4 ++++
 1 file changed, 4 insertions(+)

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