Hello: This patch was applied to bpf/bpf.git (master) by Alexei Starovoitov <ast@xxxxxxxxxx>: On Sat, 24 Dec 2022 21:31:46 +0800 you wrote: > In the scenario where livepatch and kretfunc coexist, the pageattr of > im->image is rox after arch_prepare_bpf_trampoline in > bpf_trampoline_update, and then modify_fentry or register_fentry returns > -EAGAIN from bpf_tramp_ftrace_ops_func, the BPF_TRAMP_F_ORIG_STACK flag > will be configured, and arch_prepare_bpf_trampoline will be re-executed. > > At this time, because the pageattr of im->image is rox, > arch_prepare_bpf_trampoline will read and write im->image, which causes > a fault. as follows: > > [...] Here is the summary with links: - bpf: Fix panic due to wrong pageattr of im->image https://git.kernel.org/bpf/bpf/c/9ed1d9aeef58 You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html