Bug 216389
| Summary: | net/bluetooth/l2cap_core.c fails bounds check with GCC 12.2 | ||
|---|---|---|---|
| Product: | Drivers | Reporter: | Erhard F. (erhard_f) |
| Component: | Bluetooth | Assignee: | linux-bluetooth (linux-bluetooth) |
| Status: | RESOLVED ANSWERED | ||
| Severity: | normal | CC: | luiz.dentz, marcel |
| Priority: | P1 | ||
| Hardware: | PPC-64 | ||
| OS: | Linux | ||
| Kernel Version: | 5.19.2 | Subsystem: | |
| Regression: | No | Bisected commit-id: | |
| Attachments: | kernel .config (5.19.2, Talos II Secure Workstation) | ||
This will be fixed eventually, might have already been fixed in 6.0-rc2. Removing -Werror will fix it as well. 6.0-rc2 still affected. But of course removing -Werror 'fixes' it. The following patch should fix it: https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/commit/?id=1d71d9223e4143d3638f60c7bb291844c237556c (In reply to Luiz Von Dentz from comment #3) > The following patch should fix it: > > https://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next.git/ > commit/?id=1d71d9223e4143d3638f60c7bb291844c237556c Correct. Thanks! I'll close here as 'fixed' when the patch makes it into -rc. |
Created attachment 301616 [details] kernel .config (5.19.2, Talos II Secure Workstation) I get this on my Talos II when building v5.19.2. Does not happen with GCC 11.3. # make CALL scripts/checksyscalls.sh CALL scripts/atomic/check-atomics.sh CHK include/generated/compile.h CC [M] net/bluetooth/l2cap_core.o In file included from ./include/linux/string.h:253, from ./include/linux/bitmap.h:11, from ./include/linux/cpumask.h:12, from ./include/linux/mm_types_task.h:14, from ./include/linux/mm_types.h:5, from ./include/linux/buildid.h:5, from ./include/linux/module.h:14, from net/bluetooth/l2cap_core.c:31: 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:420:16: note: in expansion of macro '__underlying_memcmp' 420 | return __underlying_memcmp(p, q, size); | ^~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors make[2]: *** [scripts/Makefile.build:249: net/bluetooth/l2cap_core.o] Fehler 1 make[1]: *** [scripts/Makefile.build:466: net/bluetooth] Fehler 2 make: *** [Makefile:1849: net] Fehler 2