On Sat, Aug 20, 2022 at 11:32:36AM +0100, Sudip Mukherjee wrote:
> On Sat, Aug 20, 2022 at 11:03 AM Sudip Mukherjee (Codethink)
> <sudipm.mukherjee@xxxxxxxxx> wrote:
> >
> > Hi Greg,
> >
> > On Fri, Aug 19, 2022 at 05:40:12PM +0200, Greg Kroah-Hartman wrote:
> > > -------------------
> > > NOTE, this is the LAST 5.18.y stable release. This tree will be
> > > end-of-life after this one. Please move to 5.19.y at this point in time
> > > or let us know why that is not possible.
> > > -------------------
> > >
> > > This is the start of the stable review cycle for the 5.18.19 release.
> > > There are 6 patches in this series, all will be posted as a response
> > > to this one. If anyone has any issues with these being applied, please
> > > let me know.
> > >
> > > Responses should be made by Sun, 21 Aug 2022 15:36:59 +0000.
> > > Anything received after that time might be too late.
> >
>
> <snip>
>
> >
> > powerpc failure is not seen in mainline. Same error as csky and mips.
> >
> > In function 'memcmp',
> > inlined from 'bacmp' at ./include/net/bluetooth/bluetooth.h:302:9,
> > inlined from 'l2cap_global_chan_by_psm' at net/bluetooth/l2cap_core.c:2002:15:
> > ./include/linux/fortify-string.h:44:33: error: '__builtin_memcmp' specified bound 6 exceeds source size 0 [-Werror=stringop-overread]
> > 44 | #define __underlying_memcmp __builtin_memcmp
> > | ^
> > ./include/linux/fortify-string.h:404:16: note: in expansion of macro '__underlying_memcmp'
> > 404 | return __underlying_memcmp(p, q, size);
> > | ^~~~~~~~~~~~~~~~~~~
> > In function 'memcmp',
> > inlined from 'bacmp' at ./include/net/bluetooth/bluetooth.h:302:9,
> > inlined from 'l2cap_global_chan_by_psm' at net/bluetooth/l2cap_core.c:2003:15:
> > ./include/linux/fortify-string.h:44:33: error: '__builtin_memcmp' specified bound 6 exceeds source size 0 [-Werror=stringop-overread]
> > 44 | #define __underlying_memcmp __builtin_memcmp
> > | ^
> > ./include/linux/fortify-string.h:404:16: note: in expansion of macro '__underlying_memcmp'
> > 404 | return __underlying_memcmp(p, q, size);
> > | ^~~~~~~~~~~~~~~~~~~
> >
> > I am bisecting now to find out what caused it.
>
> Introduced in v5.18.18 due to 11e008e59970 ("Bluetooth: L2CAP: Fix
> l2cap_global_chan_by_psm regression").
> But v5.19.y and mainline does not show the build failure as they also
> have 41b7a347bf14 ("powerpc: Book3S 64-bit outline-only KASAN
> support").
Ick, that's a mess. This is going to be the last 5.18 tree, so I'm just
going to leave this alone...
thanks,
greg k-h
