tools/testing/selftests/livepatch/test-shadow-vars.sh

File Facts

System

Linux kernel

Corpus path

tools/testing/selftests/livepatch/test-shadow-vars.sh

Extension

.sh

Size

3783 bytes

Lines

80

Domain

Support Tooling And Documentation

Bucket

tools

Inferred role

Support Tooling And Documentation: tools

Status

atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

• Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
# Copyright (C) 2018 Joe Lawrence <joe.lawrence@redhat.com>

. $(dirname $0)/functions.sh

MOD_TEST=test_klp_shadow_vars

setup_config


# - load a module that exercises the shadow variable API

start_test "basic shadow variable API"

load_mod $MOD_TEST
unload_mod $MOD_TEST

check_result "% insmod test_modules/$MOD_TEST.ko
$MOD_TEST: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0
$MOD_TEST:   got expected NULL result
$MOD_TEST: shadow_ctor: PTR3 -> PTR2
$MOD_TEST: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3
$MOD_TEST: shadow_ctor: PTR6 -> PTR5
$MOD_TEST: klp_shadow_alloc(obj=PTR1, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR5 = PTR6
$MOD_TEST: shadow_ctor: PTR8 -> PTR7
$MOD_TEST: klp_shadow_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8
$MOD_TEST: shadow_ctor: PTR11 -> PTR10
$MOD_TEST: klp_shadow_alloc(obj=PTR9, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR10 = PTR11
$MOD_TEST: shadow_ctor: PTR13 -> PTR12
$MOD_TEST: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13
$MOD_TEST: shadow_ctor: PTR16 -> PTR15
$MOD_TEST: klp_shadow_alloc(obj=PTR14, id=0x1235, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR15 = PTR16
$MOD_TEST: klp_shadow_get(obj=PTR1, id=0x1234) = PTR3
$MOD_TEST:   got expected PTR3 -> PTR2 result
$MOD_TEST: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6
$MOD_TEST:   got expected PTR6 -> PTR5 result
$MOD_TEST: klp_shadow_get(obj=PTR9, id=0x1234) = PTR8
$MOD_TEST:   got expected PTR8 -> PTR7 result
$MOD_TEST: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11
$MOD_TEST:   got expected PTR11 -> PTR10 result
$MOD_TEST: klp_shadow_get(obj=PTR14, id=0x1234) = PTR13
$MOD_TEST:   got expected PTR13 -> PTR12 result
$MOD_TEST: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16
$MOD_TEST:   got expected PTR16 -> PTR15 result
$MOD_TEST: klp_shadow_get_or_alloc(obj=PTR1, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR2 = PTR3
$MOD_TEST:   got expected PTR3 -> PTR2 result
$MOD_TEST: klp_shadow_get_or_alloc(obj=PTR9, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR7 = PTR8
$MOD_TEST:   got expected PTR8 -> PTR7 result
$MOD_TEST: klp_shadow_get_or_alloc(obj=PTR14, id=0x1234, size=8, gfp_flags=GFP_KERNEL), ctor=PTR4, ctor_data=PTR12 = PTR13
$MOD_TEST:   got expected PTR13 -> PTR12 result
$MOD_TEST: shadow_dtor(obj=PTR1, shadow_data=PTR3)
$MOD_TEST: klp_shadow_free(obj=PTR1, id=0x1234, dtor=PTR17)
$MOD_TEST: klp_shadow_get(obj=PTR1, id=0x1234) = PTR0
$MOD_TEST:   got expected NULL result
$MOD_TEST: shadow_dtor(obj=PTR9, shadow_data=PTR8)
$MOD_TEST: klp_shadow_free(obj=PTR9, id=0x1234, dtor=PTR17)
$MOD_TEST: klp_shadow_get(obj=PTR9, id=0x1234) = PTR0
$MOD_TEST:   got expected NULL result
$MOD_TEST: shadow_dtor(obj=PTR14, shadow_data=PTR13)
$MOD_TEST: klp_shadow_free(obj=PTR14, id=0x1234, dtor=PTR17)
$MOD_TEST: klp_shadow_get(obj=PTR14, id=0x1234) = PTR0
$MOD_TEST:   got expected NULL result
$MOD_TEST: klp_shadow_get(obj=PTR1, id=0x1235) = PTR6
$MOD_TEST:   got expected PTR6 -> PTR5 result
$MOD_TEST: klp_shadow_get(obj=PTR9, id=0x1235) = PTR11
$MOD_TEST:   got expected PTR11 -> PTR10 result
$MOD_TEST: klp_shadow_get(obj=PTR14, id=0x1235) = PTR16
$MOD_TEST:   got expected PTR16 -> PTR15 result
$MOD_TEST: klp_shadow_free_all(id=0x1235, dtor=PTR0)

Annotation

• Atlas domain: Support Tooling And Documentation / tools.
• Implementation status: atlas-only.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.