https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102361
Bug ID: 102361
Summary: Errors compiling Linux kernel 5.14.4 with
CONFIG_FORTIFY=y
Product: gcc
Version: 12.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: c
Assignee: unassigned at gcc dot gnu.org
Reporter: dac324 at yahoo dot de
Target Milestone: ---
GCC version: gcc (GCC) 12.0.0 20210910 (experimental)
With this version, it is not possible to compile the Linux kernel sources
(tested with both 5.14.1 and 5.14.4).
Problem is that GCC 12 conflicts with CONFIG_FORTIFY=y.
Errors thrown with the 5.14.1 kernel sources:
In function 'memset',
inlined from 'init_rock_state.part.0' at fs/isofs/rock.c:74:2:
./include/linux/fortify-string.h:172:17: error: call to '__write_overflow'
declared with attribute error: detected write beyond size of object passed as
1st parameter
172 | __write_overflow();
| ^~~~~~~~~~~~~~~~~~
make[2]: *** [scripts/Makefile.build:271: fs/isofs/rock.o] Error 1
make[1]: *** [scripts/Makefile.build:514: fs/isofs] Error 2
In function 'memcpy',
inlined from 'tl_to_darg.part.0' at fs/ext4/fast_commit.c:1295:2:
./include/linux/fortify-string.h:187:25: error: call to '__read_overflow2'
declared with attribute error: detected read beyond size of object passed as
2nd parameter
187 | __read_overflow2();
| ^~~~~~~~~~~~~~~~~~
make[2]: *** [scripts/Makefile.build:271: fs/ext4/fast_commit.o] Error 1
make[1]: *** [scripts/Makefile.build:514: fs/ext4] Error 2
Error thrown with the 5.14.4 kernel sources:
In Function »memcpy«,
inserted from von »tl_to_darg.part.0« bei fs/ext4/fast_commit.c:1295:2:
./include/linux/fortify-string.h:187:25: Error: call to »__read_overflow2«
declared with attribute error: detected read beyond size of object passed as
2nd parameter
187 | __read_overflow2();
| ^~~~~~~~~~~~~~~~~~
With GCC 11, these errors do not occur. Hence, I must assume that they are
related to the compiler version.
