kcsan_disable_current(9)

💅 kcsan_disable_current — the kernel API manual, but make it make sense 🎀

okay bestie, so we're in the Kernel API Manual today and the star of the show is kcsan_disable_current(9). she's short, she's sweet, she does exactly one thing and she does it iconically. let's get into it ✨

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🌸 NAME 🌸

kcsan_disable_current — disable KCSAN for the current context 💅

like, for this context specifically. not everything. not forever. just here, just now. main character energy but make it scoped 🫶

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✨ SYNOPSIS ✨

void kcsan_disable_current (void );

that's the whole signature, no cap. returns void, takes void. minimalism ate 🔥

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🦋 ARGUMENTS 🦋

• void — no arguments. literally zero. nothing to pass, nothing to worry about, she don't want anything from you 😌

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💖 DESCRIPTION 💖

Supports nesting.

that's it. that's the description. and honestly? iconic. the way that a two-word description can carry so much 💀

what it means for you, bestie: you can call this more than once, and it stacks — that's the nesting thing, and it's supported, so go off 🎀

ngl the original page really said "supports nesting" and dipped. respect fr fr.

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🧚 SEE ALSO 🧚

Kernel file ./include/linux/kcsan-checks.h — that's where she lives, go say hi 🌈

and the whole squad, because KCSAN has so many friends and you should lowkey meet all of them:

• __kcsan_check_access(9)
• __kcsan_mb(9)
• __kcsan_wmb(9)
• __kcsan_rmb(9)
• __kcsan_release(9)
• kcsan_enable_current(9)
• kcsan_nestable_atomic_begin(9)
• kcsan_nestable_atomic_end(9)
• kcsan_flat_atomic_begin(9)
• kcsan_flat_atomic_end(9)
• kcsan_atomic_next(9)
• kcsan_set_access_mask(9)
• kcsan_begin_scoped_access(9)
• kcsan_end_scoped_access(9)
• __kcsan_check_read(9)
• __kcsan_check_write(9)
• __kcsan_check_read_write(9)
• kcsan_check_read(9)
• kcsan_check_write(9)
• kcsan_check_read_write(9)
• ASSERT_EXCLUSIVE_WRITER(9)
• ASSERT_EXCLUSIVE_WRITER_SCOPED(9)
• ASSERT_EXCLUSIVE_ACCESS(9)
• ASSERT_EXCLUSIVE_ACCESS_SCOPED(9)
• ASSERT_EXCLUSIVE_BITS(9)

okay that's the full roster, every single one, no skips 💜 iykyk 😭

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and that's the page!! thank you for coming to my ted talk 🫶 this little gem comes out of ./include/linux and it's dated October 2026 — so yeah, she's from the future and she's still just saying "supports nesting." queen behavior 👑 ⭐