In message: [linux-yocto][v5.15/standard/x86 and v5.15/standard/preempt-rt/x86][PATCH 0/1] lkdtm: Disable return thunks in rodata.c on 04/08/2022 Yongxin Liu wrote:
> Hi Bruce, > > This patch from upstream can fix the following warning in kernel v5.15 for > x86. > Though LKDTM is only used for testing and this issuse is not serious, > it is nice to fix. > > Could you please help to merge? merged. Bruce > > root@intel-x86-64:~# insmod lkdtm.ko > ------------[ cut here ]------------ > missing return thunk: 0xffffffffc03ee5b0-0xffffffffc03ee5b5: e9 00 00 00 00 > WARNING: CPU: 5 PID: 643 at arch/x86/kernel/alternative.c:557 > apply_returns+0x1c1/0x1f0 > Modules linked in: > CPU: 5 PID: 643 Comm: insmod Not tainted 5.15.58-yocto-standard+ #1 > Hardware name: Supermicro SYS-5019A-FTN4/A2SDi-8C-HLN4F, BIOS 1.1c 06/25/2019 > RIP: 0010:apply_returns+0x1c1/0x1f0 > Call Trace: > <TASK> > ? apply_retpolines+0x61/0x140 > ? __this_cpu_preempt_check+0x20/0x20 > module_finalize+0x131/0x190 > load_module+0x4ee/0x870 > __do_sys_finit_module+0xb5/0x100 > __x64_sys_finit_module+0x18/0x20 > do_syscall_64+0x43/0x90 > entry_SYSCALL_64_after_hwframe+0x61/0xcb > > > Thanks, > Yongxin
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