On Sun, Jul 11, 2021 at 07:44:41PM +0300, Andrew Gabbasov wrote:

Hello Greg,

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-----Original Message-----
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Sent: Sunday, July 11, 2021 7:07 PM
To: Gabbasov, Andrew <redacted>
Cc: Macpaul Lin <macpaul.lin@mediatek.com>; Eugeniu Rosca <redacted>; linux-usb@vger.kernel.org;
linux-kernel@vger.kernel.org; stable@vger.kernel.org; Felipe Balbi [off-list ref]; Eugeniu Rosca
[off-list ref]; Eddie Hung [off-list ref]
Subject: Re: [PATCH v4.14] usb: gadget: f_fs: Fix setting of device and driver data cross-references

On Sun, Jul 11, 2021 at 10:51:30AM -0500, Andrew Gabbasov wrote:

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commit ecfbd7b9054bddb12cea07fda41bb3a79a7b0149 upstream.

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Fixes: 4b187fceec3c ("usb: gadget: FunctionFS: add devices management code")
Fixes: 3262ad824307 ("usb: gadget: f_fs: Stop ffs_closed NULL pointer dereference")
Fixes: cdafb6d8b8da ("usb: gadget: f_fs: Fix use-after-free in ffs_free_inst")
Reported-by: Bhuvanesh Surachari <redacted>
Tested-by: Eugeniu Rosca <redacted>
Reviewed-by: Eugeniu Rosca <redacted>
Signed-off-by: Andrew Gabbasov <redacted>
Link: https://lore.kernel.org/r/20210603171507.22514-1-andrew_gabbasov@mentor.com (local)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[agabbasov: Backported to earlier mount API, resolved context conflicts]
---
 drivers/usb/gadget/function/f_fs.c | 67 ++++++++++++++----------------
 1 file changed, 32 insertions(+), 35 deletions(-)

I also need a 4.19 version of this commit, as you do not want to upgrade
to a newer kernel and regress.  Can you also provide that?

If I correctly understand, this particular file has a very minor difference
between 4.14 and 4.19. So, this same patch for 4.14 can be just applied / cherry-picked
cleanly on top of latest stable 4.19.

Now queued up, thanks.

greg k-h