From 0303ce17347a02863c4ddef9777a42ff0315acb6 Mon Sep 17 00:00:00 2001 From: Hailong Liu Date: Tue, 11 May 2021 22:04:29 +0800 Subject: [PATCH] samples, bpf: Suppress compiler warning While cross compiling on ARM32 , the casting from pointer to __u64 will cause warnings: samples/bpf/task_fd_query_user.c: In function 'main': samples/bpf/task_fd_query_user.c:399:23: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] 399 | uprobe_file_offset = (__u64)main - (__u64)&__executable_start; | ^ samples/bpf/task_fd_query_user.c:399:37: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast] 399 | uprobe_file_offset = (__u64)main - (__u64)&__executable_start; Workaround this by using "unsigned long" to adapt to different ARCHs. Signed-off-by: Hailong Liu Signed-off-by: Andrii Nakryiko Link: https://lore.kernel.org/bpf/20210511140429.89426-1-liuhailongg6@163.com --- samples/bpf/task_fd_query_user.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/samples/bpf/task_fd_query_user.c b/samples/bpf/task_fd_query_user.c index a78025b0026b..c9a0ca8351fd 100644 --- a/samples/bpf/task_fd_query_user.c +++ b/samples/bpf/task_fd_query_user.c @@ -396,7 +396,7 @@ int main(int argc, char **argv) * on different systems with different compilers. The right way is * to parse the ELF file. We took a shortcut here. */ - uprobe_file_offset = (__u64)main - (__u64)&__executable_start; + uprobe_file_offset = (unsigned long)main - (unsigned long)&__executable_start; CHECK_AND_RET(test_nondebug_fs_probe("uprobe", (char *)argv[0], uprobe_file_offset, 0x0, false, BPF_FD_TYPE_UPROBE,