Messages in this thread | | | Date | Fri, 12 Aug 2022 13:44:44 +0200 | Subject | Re: mainline build failure due to 332f1795ca20 ("Bluetooth: L2CAP: Fix l2cap_global_chan_by_psm regression") | From | Paul Menzel <> |
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Dear Sudip,
Am 12.08.22 um 13:25 schrieb Sudip Mukherjee (Codethink):
> The latest mainline kernel branch fails to build csky and mips allmodconfig > with gcc-12. > > mips error is: > > In function 'memcmp', > inlined from 'bacmp' at ./include/net/bluetooth/bluetooth.h:347:9, > 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:420:16: note: in expansion of macro '__underlying_memcmp' > 420 | return __underlying_memcmp(p, q, size); > | ^~~~~~~~~~~~~~~~~~~ > In function 'memcmp', > inlined from 'bacmp' at ./include/net/bluetooth/bluetooth.h:347:9, > inlined from 'l2cap_global_chan_by_psm' at net/bluetooth/l2cap_core.c:2004:15: > ./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:420:16: note: in expansion of macro '__underlying_memcmp' > 420 | return __underlying_memcmp(p, q, size); > | ^~~~~~~~~~~~~~~~~~~ > > > csky error is: > > In file included from net/bluetooth/l2cap_core.c:37: > In function 'bacmp', > inlined from 'l2cap_global_chan_by_psm' at net/bluetooth/l2cap_core.c:2003:15: > ./include/net/bluetooth/bluetooth.h:347:16: error: 'memcmp' specified bound 6 exceeds source size 0 [-Werror=stringop-overread] > 347 | return memcmp(ba1, ba2, sizeof(bdaddr_t)); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > In function 'bacmp', > inlined from 'l2cap_global_chan_by_psm' at net/bluetooth/l2cap_core.c:2004:15: > ./include/net/bluetooth/bluetooth.h:347:16: error: 'memcmp' specified bound 6 exceeds source size 0 [-Werror=stringop-overread] > 347 | return memcmp(ba1, ba2, sizeof(bdaddr_t)); > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > > > git bisect pointed to 332f1795ca20 ("Bluetooth: L2CAP: Fix l2cap_global_chan_by_psm regression"). > And, reverting that commit has fixed the build failure. > > Already reported at https://lore.kernel.org/lkml/YvVQEDs75pxSgxjM@debian/ > and Jacub is looking at a fix, but this is just my usual build failure > mail of mainline branch for Linus's information.
Does *[PATCH] Bluetooth: L2CAP: Elide a string overflow warning* [1] fix it?
Kind regards,
Paul
PS:
> -- > Regards > Sudip
Only if you care, your signature delimiter is missing a trailing space [2].
[1]: https://lore.kernel.org/linux-bluetooth/20220812055249.8037-1-palmer@rivosinc.com/T/#t [2]: https://en.wikipedia.org/wiki/Signature_block#Standard_delimiter
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