__kcsan_rmb(9)

💅 __kcsan_rmb(9) — read memory barrier instrumentation 💅

okay bestie, this is __kcsan_rmb(9) from the Kernel API Manual, and it is literally the function for read memory barrier instrumentation. No cap. 🫶

✨ NAME ✨

• __kcsan_rmb — read memory barrier instrumentation. That’s the whole vibe. Iconic. 💅

🌸 SYNOPSIS 🌸

The signature is exactly this, character for character, don’t @ me:

void __kcsan_rmb (void );

🎀 ARGUMENTS 🎀

• void — no arguments, bestie. Not one. Zero. The void-est void. 🫶

🦋 SEE ALSO 🦋

Kernel file: ./include/linux/kcsan-checks.h. The whole bestie squad is right here:

• __kcsan_check_access(9)
• __kcsan_mb(9)
• __kcsan_wmb(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)
• 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)

Signed off from the ./include/linux corner of the world, dated October 2026, wearing the __kcsan_rmb(9) tag. Mwah 💋🫶