df78da2726
Fix few issues found when building and running test_progs in release mode. First, potentially uninitialized idx variable in xskxceiver, force-initialize to zero to satisfy compiler. Few instances of defining uprobe trigger functions break in release mode unless marked as noinline, due to being static. Add noinline to make sure everything works. Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Hao Luo <haoluo@google.com> Link: https://lore.kernel.org/bpf/20220816001929.369487-5-andrii@kernel.org
51 lines
1.2 KiB
C
51 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
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#define _GNU_SOURCE
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#include <test_progs.h>
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#include "test_task_pt_regs.skel.h"
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/* uprobe attach point */
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static noinline void trigger_func(void)
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{
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asm volatile ("");
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}
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void test_task_pt_regs(void)
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{
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struct test_task_pt_regs *skel;
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struct bpf_link *uprobe_link;
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ssize_t uprobe_offset;
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bool match;
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uprobe_offset = get_uprobe_offset(&trigger_func);
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if (!ASSERT_GE(uprobe_offset, 0, "uprobe_offset"))
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return;
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skel = test_task_pt_regs__open_and_load();
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if (!ASSERT_OK_PTR(skel, "skel_open"))
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return;
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if (!ASSERT_OK_PTR(skel->bss, "check_bss"))
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goto cleanup;
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uprobe_link = bpf_program__attach_uprobe(skel->progs.handle_uprobe,
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false /* retprobe */,
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0 /* self pid */,
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"/proc/self/exe",
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uprobe_offset);
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if (!ASSERT_OK_PTR(uprobe_link, "attach_uprobe"))
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goto cleanup;
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skel->links.handle_uprobe = uprobe_link;
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/* trigger & validate uprobe */
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trigger_func();
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if (!ASSERT_EQ(skel->bss->uprobe_res, 1, "check_uprobe_res"))
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goto cleanup;
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match = !memcmp(&skel->bss->current_regs, &skel->bss->ctx_regs,
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sizeof(skel->bss->current_regs));
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ASSERT_TRUE(match, "check_regs_match");
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cleanup:
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test_task_pt_regs__destroy(skel);
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}
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