On Mon, Aug 19, 2024 at 04:07:41PM +0200, Greg Kroah-Hartman wrote: > On Sun, Aug 18, 2024 at 04:17:36PM -0700, Bjorn Andersson wrote: > > Amit and Johan both reported a NULL pointer dereference in the > > pmic_glink client code during initialization, and Stephen Boyd pointed > > out the problem (race condition). > > > > While investigating, and writing the fix, I noticed that > > ucsi_unregister() is called in atomic context but tries to sleep, and I > > also noticed that the condition for when to inform the pmic_glink client > > drivers when the remote has gone down is just wrong. > > > > So, let's fix all three. > > > > As mentioned in the commit message for the UCSI fix, I have a series in > > the works that makes the GLINK callback happen in a sleepable context, > > which would remove the need for the clients list to be protected by a > > spinlock, and removing the work scheduling. This is however not -rc > > material... > > > > In addition to the NULL pointer dereference, there is the -ECANCELED > > issue reported here: > > https://lore.kernel.org/all/Zqet8iInnDhnxkT9@xxxxxxxxxxxxxxxxxxxx/ > > I have not yet been able to either reproduce this or convince myself > > that this is the same issue. > > > > Signed-off-by: Bjorn Andersson <quic_bjorande@xxxxxxxxxxx> > > What tree are these to go through? I can take them through mine, but if > someone else wants to, feel free to route them some other way. > It's primarily soc/qcom content, so I can pick them through the qcom soc tree. Regards, Bjorn > thanks, > > greg k-h >
