kcsan_check_read_write(9)

💅 kcsan_check_read_write(9) 💅

okay bestie, welcome to the Kernel API Manual — this one is a whole vibe check for memory access, stay with me 🫶

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✨ NAME ✨

kcsan_check_read_write — check regular read-write access for races 🔥

like, it's literally the function that goes "hey bestie, is anyone else touching this memory rn?" 👀

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🌸 SYNOPSIS 🌸

kcsan_check_read_write (ptr , size );

that's it. that's the whole call. iconic. 💅

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🎀 ARGUMENTS 🎀

• ptr — address of access 📍 like, where the memory lives, the actual spot bestie
• size — size of access 📏 how many bytes we're looking at, no cap

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🦋 SEE ALSO 🦋

this family is huge, okay, it's giving extended universe 🌈 so buckle up:

The Kernel file ./include/linux/kcsan-checks.h plus:

• __kcsan_check_access(9)
• __kcsan_mb(9)
• __kcsan_wmb(9)
• __kcsan_rmb(9)
• __kcsan_release(9)
• kcsan_disable_current(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)
• ASSERT_EXCLUSIVE_WRITER(9)
• ASSERT_EXCLUSIVE_WRITER_SCOPED(9)
• ASSERT_EXCLUSIVE_ACCESS(9)
• ASSERT_EXCLUSIVE_ACCESS_SCOPED(9)
• ASSERT_EXCLUSIVE_BITS(9)

go read the whole squad, iykyk 😌

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okay that's the page!! mwah 💖 this one shipped from ./include/linux, dated October 2026, and it's the kcsan_check_read_write(9) manual entry — slay, bye bestie 🎀✨