kunit_kmalloc(9)

💅 kunit_kmalloc

okay so bestie, this is kunit_kmalloc(9) — the kernel API manual page, and yes the manual name goes right up there, we're not copying the header line, we're folding it in like a cute little hair clip 🎀

It does exactly what kmalloc() does… except the allocation is test managed. Periodt. ✨

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✨ SYNOPSIS ✨

void * kunit_kmalloc (struct kunit *test , size_t size , gfp_t gfp );

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🫶 ARGUMENTS 🫶

• test — the test context object. your main character of the operation ngl.
• size — the size, in bytes, of the memory you want. how much memory is it giving? that much. 💅
• gfp — the flags handed straight down to the underlying kmalloc.

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🌸 DESCRIPTION 🌸

Like, kmalloc() but the allocation is test managed, so you don't have to stress about cleaning it up yourself. Iconic behavior honestly.

For the full lore, go see kmalloc and kunit_kmalloc_array — they've got more info for you.

⚠️ heads up bestie: some internal context data is also allocated with GFP_KERNEL, no matter what gfp you pass in. so your flags aren't the whole story, iykyk 🙈

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🦋 SEE ALSO 🦋

The whole friend group, fr fr — all of these live in the kernel file ./include/kunit/test.h:

• enum kunit_status(9), struct kunit_case(9)
• KUNIT_CASE(9), KUNIT_CASE_ATTR(9), KUNIT_CASE_SLOW(9), KUNIT_CASE_PARAM(9), KUNIT_CASE_PARAM_ATTR(9), KUNIT_CASE_PARAM_WITH_INIT(9)
• struct kunit_suite(9), struct kunit(9), kunit_test_suites(9), kunit_test_init_section_suites(9)
• kunit_kmalloc_array(9), kunit_kfree(9), kunit_kzalloc(9), kunit_kcalloc(9), kunit_kfree_const(9), kunit_kstrdup(9), kunit_kstrdup_const(9), kunit_attach_mm(9), kunit_vm_mmap(9)
• kunit_mark_skipped(9), kunit_skip(9), kunit_info(9), kunit_warn(9), kunit_err(9), KUNIT_SUCCEED(9), KUNIT_FAIL(9)
• KUNIT_EXPECT_TRUE(9), KUNIT_EXPECT_FALSE(9), KUNIT_EXPECT_EQ(9), KUNIT_EXPECT_PTR_EQ(9), KUNIT_EXPECT_NE(9), KUNIT_EXPECT_PTR_NE(9), KUNIT_EXPECT_LT(9), KUNIT_EXPECT_LE(9), KUNIT_EXPECT_GT(9), KUNIT_EXPECT_GE(9), KUNIT_EXPECT_STREQ(9), KUNIT_EXPECT_STRNEQ(9), KUNIT_EXPECT_MEMEQ(9), KUNIT_EXPECT_MEMNEQ(9), KUNIT_EXPECT_NULL(9), KUNIT_EXPECT_NOT_NULL(9), KUNIT_EXPECT_NOT_ERR_OR_NULL(9)
• KUNIT_FAIL_AND_ABORT(9), KUNIT_ASSERT_TRUE(9), KUNIT_ASSERT_FALSE(9), KUNIT_ASSERT_EQ(9), KUNIT_ASSERT_PTR_EQ(9), KUNIT_ASSERT_NE(9), KUNIT_ASSERT_PTR_NE(9), KUNIT_ASSERT_LT(9), KUNIT_ASSERT_LE(9), KUNIT_ASSERT_GT(9), KUNIT_ASSERT_GE(9), KUNIT_ASSERT_STREQ(9), KUNIT_ASSERT_STRNEQ(9), KUNIT_ASSERT_MEMEQ(9), KUNIT_ASSERT_MEMNEQ(9), KUNIT_ASSERT_NULL(9), KUNIT_ASSERT_NOT_NULL(9), KUNIT_ASSERT_NOT_ERR_OR_NULL(9)
• KUNIT_ARRAY_PARAM(9), KUNIT_ARRAY_PARAM_DESC(9), kunit_register_params_array(9), kunit_warning_suppress(9), KUNIT_SUPPRESSED_WARNING_COUNT(9), KUNIT_EXPECT_SUPPRESSED_WARNING_COUNT(9), KUNIT_ASSERT_SUPPRESSED_WARNING_COUNT(9)

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and that's the whole page, bestie 💖 this one's sourced from ./include/kunit, dated October 2026, and it's filed under kunit_kmalloc(9) — slay, go write some tests, mwah 🧚‍♀️✨