On Tue, Jan 7, 2025 at 10:37 PM Stephen Boyd <sboyd@xxxxxxxxxx> wrote:
>
> Quoting Lubomir Rintel (2024-12-31 11:03:35)
> > Setting the genpd's struct device's name with dev_set_name() is
> > happening within pm_genpd_init(). If it remains NULL, things can blow up
> > later, such as when crafting the devfs hierarchy for the power domain:
> >
> > 8<--- cut here --- [please do not actually cut, you'll ruin your display]
> > Unable to handle kernel NULL pointer dereference at virtual address 00000000 when read
> > ...
> > Call trace:
> > strlen from start_creating+0x90/0x138
> > start_creating from debugfs_create_dir+0x20/0x178
> > debugfs_create_dir from genpd_debug_add.part.0+0x4c/0x144
> > genpd_debug_add.part.0 from genpd_debug_init+0x74/0x90
> > genpd_debug_init from do_one_initcall+0x5c/0x244
> > do_one_initcall from kernel_init_freeable+0x19c/0x1f4
> > kernel_init_freeable from kernel_init+0x1c/0x12c
> > kernel_init from ret_from_fork+0x14/0x28
> >
> > Bisecting tracks this crash back to commit 899f44531fe6 ("pmdomain: core:
> > Add GENPD_FLAG_DEV_NAME_FW flag"), which exchanges use of genpd->name
> > with dev_name(&genpd->dev) in genpd_debug_add.part().
> >
> > Fixes: 899f44531fe6 ("pmdomain: core: Add GENPD_FLAG_DEV_NAME_FW flag")
> > Signed-off-by: Lubomir Rintel <lkundrak@xxxxx>
>
> Please tell me which author domain it is supposed to be. redhat.com or
> v3.sk?
lkundrak@xxxxx please
My apologies -- apparently gmail now insists on using a gmail
address for mail outgoing via their server, to the point it silently rewrites
it in messages. I'm also unable to use a different mail server from some
networks. Sigh. I'm sorry about this, I'll try to find a way around it
next time.
Thank you,
Lubo
