On Sat, Aug 20, 2022 at 11:03 AM Sudip Mukherjee (Codethink) sudipm.mukherjee@gmail.com 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").