From: Greg KH <gregkh@linuxfoundation.org>
To: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Cc: hemantk@codeaurora.org, bbhatt@codeaurora.org,
linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
jarvis.w.jiang@gmail.com, loic.poulain@linaro.org,
Shujun Wang <wsj20369@163.com>
Subject: Re: [PATCH 3/3] bus: mhi: pci-generic: Fix hibernation
Date: Wed, 9 Jun 2021 19:04:35 +0200 [thread overview]
Message-ID: <YMD0o26UzZ72mdDp@kroah.com> (raw)
In-Reply-To: <20210606153741.20725-4-manivannan.sadhasivam@linaro.org>
On Sun, Jun 06, 2021 at 09:07:41PM +0530, Manivannan Sadhasivam wrote:
> From: Loic Poulain <loic.poulain@linaro.org>
>
> This patch fixes crash after resuming from hibernation. The issue
> occurs when mhi stack is builtin and so part of the 'restore-kernel',
> causing the device to be resumed from 'restored kernel' with a no
> more valid context (memory mappings etc...) and leading to spurious
> crashes.
>
> This patch fixes the issue by implementing proper freeze/restore
> callbacks.
>
> Reported-by: Shujun Wang <wsj20369@163.com>
> Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
> Reviewed-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> Link: https://lore.kernel.org/r/1622571445-4505-1-git-send-email-loic.poulain@linaro.org
> Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> ---
> drivers/bus/mhi/pci_generic.c | 36 ++++++++++++++++++++++++++++++++++-
> 1 file changed, 35 insertions(+), 1 deletion(-)
Also needs a stable link, right? I'll go add it by hand. Please be
more careful next time...
greg k-h
next prev parent reply other threads:[~2021-06-09 17:04 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-06 15:37 [PATCH 0/3] MHI fixes for v5.13 Manivannan Sadhasivam
2021-06-06 15:37 ` [PATCH 1/3] bus: mhi: pci_generic: T99W175: update channel name from AT to DUN Manivannan Sadhasivam
2021-06-06 15:37 ` [PATCH 2/3] bus: mhi: pci_generic: Fix possible use-after-free in mhi_pci_remove() Manivannan Sadhasivam
2021-06-09 16:59 ` Greg KH
2021-06-06 15:37 ` [PATCH 3/3] bus: mhi: pci-generic: Fix hibernation Manivannan Sadhasivam
2021-06-09 17:04 ` Greg KH [this message]
2021-06-09 17:44 ` Manivannan Sadhasivam
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