https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99113
Bug ID: 99113
Summary: SHF_GNU_RETAIN doesn't work with Linux kernel
Product: gcc
Version: 11.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: target
Assignee: unassigned at gcc dot gnu.org
Reporter: hjl.tools at gmail dot com
CC: jozef.l at somniumtech dot com
Target Milestone: ---
when building Linux kernel, ld in ninutils 2.36 with GCC 11 generates
thousands of
ld: warning: orphan section `.data.event_initcall_finish' from `init/main.o'
bei
ng placed in section `.data.event_initcall_finish'
ld: warning: orphan section `.data.event_initcall_start' from `init/main.o'
bein
g placed in section `.data.event_initcall_start'
ld: warning: orphan section `.data.event_initcall_level' from `init/main.o'
bein
g placed in section `.data.event_initcall_level'
Since these sections are marked with SHF_GNU_RETAIN, they are placed in
separate sections. They become orphan sections since they aren't expected
in the Linux kernel linker script. But orphan sections normally don't work
well with the Linux kernel linker script and the resulting kernel crashed.
