linux-kernel - Re: BUG: spinlock bad magic on CPU#1, irq/39-firewire/245 (v6.18-rc4, ppc64)

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Message-ID: <f197fe16-1ef2-4d00-93a4-1db68deade37@mailbox.org>
Date: Sat, 15 Nov 2025 00:54:52 +0100
From: Erhard Furtner <erhard_f@...lbox.org>
To: linux-kernel@...r.kernel.org, linux1394-devel@...ts.sourceforge.net
Cc: ville.syrjala@...ux.intel.com, o-takashi@...amocchi.jp
Subject: Re: BUG: spinlock bad magic on CPU#1, irq/39-firewire/245 (v6.18-rc4,
 ppc64)

On 11/14/25 15:27, Takashi Sakamoto wrote:
 > Hi,
 >
 > Thanks for your sending the patch. I completely overlooked the lack of
 > initialization... Your patch fixes the same issue reported by Erhard
 > Furtner[1].
 >
 > On Fri, Nov 14, 2025 at 12:25:31AM +0200, Ville Syrjala wrote:
 >> Cc: linux1394-devel@...ts.sourceforge.net
 >> Cc: Takashi Sakamoto <o-takashi@...amocchi.jp>
 >> Fixes: 7d138cb269db ("firewire: core: use spin lock specific to 
topology map")
 >> Signed-off-by: Ville Syrjälä <ville.syrjala@...ux.intel.com>
 >> ---
 >>   drivers/firewire/core-card.c | 2 ++
 >>   1 file changed, 2 insertions(+)
 >
 > Applied to for-linus branch. I will send it to upstream as a part of
 > fixes for v6.18-rc6 kernel.
 >
 > [1] 
https://lore.kernel.org/lkml/992eaf94-6fbb-4611-9a29-2db2e2148965@mailbox.org/

I can confirm the patch from 
https://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394.git/commit/?h=for-linus&id=2ea68aed6b0d327c78755c954827f25452e42f3f 
applies on v6.18-rc5 and fixes my problem.

Thanks!

Regards,
Erhard