From 2b97956af60810cd382b86b9ce9aea421b889861 Mon Sep 17 00:00:00 2001 From: Nuoqi Gui Date: Fri, 4 Sep 2026 12:41:55 +0200 Subject: selftests/bpf: Test rhtab kptr cancellation semantics Resizable hash-map updates and deletions must not perform full special-field destruction in their caller context. In particular, a referenced kptr must remain attached to the allocation until the memory allocator destructor can release it safely. Add separate coverage for both affected paths. The update test stores a task kptr, replaces the ordinary value bytes with BPF_EXIST, and verifies that the kptr survived. The delete test removes an element and exchanges its kptr through the still-valid map-value pointer before the allocation is reclaimed. Both cases observe a NULL kptr when rhtab uses bpf_obj_free_fields(). They recover and release the reference after rhtab switches to cancellation semantics. Signed-off-by: Nuoqi Gui [ kkd: Split update and delete coverage and rewrote the commit log ] Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20260904104203.345917-5-memxor@gmail.com Signed-off-by: Alexei Starovoitov --- samples/rust/Makefile | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) create mode 100644 samples/rust/Makefile (limited to 'samples/rust/Makefile') diff --git a/samples/rust/Makefile b/samples/rust/Makefile new file mode 100644 index 000000000..b986b681c --- /dev/null +++ b/samples/rust/Makefile @@ -0,0 +1,23 @@ +# SPDX-License-Identifier: GPL-2.0 +ccflags-y += -I$(src) # needed for trace events + +obj-$(CONFIG_SAMPLE_RUST_MINIMAL) += rust_minimal.o +obj-$(CONFIG_SAMPLE_RUST_MISC_DEVICE) += rust_misc_device.o +obj-$(CONFIG_SAMPLE_RUST_PRINT) += rust_print.o +obj-$(CONFIG_SAMPLE_RUST_DEBUGFS) += rust_debugfs.o +obj-$(CONFIG_SAMPLE_RUST_DEBUGFS_SCOPED) += rust_debugfs_scoped.o +obj-$(CONFIG_SAMPLE_RUST_DMA) += rust_dma.o +obj-$(CONFIG_SAMPLE_RUST_DRIVER_I2C) += rust_driver_i2c.o +obj-$(CONFIG_SAMPLE_RUST_I2C_CLIENT) += rust_i2c_client.o +obj-$(CONFIG_SAMPLE_RUST_DRIVER_PCI) += rust_driver_pci.o +obj-$(CONFIG_SAMPLE_RUST_DRIVER_PLATFORM) += rust_driver_platform.o +obj-$(CONFIG_SAMPLE_RUST_DRIVER_USB) += rust_driver_usb.o +obj-$(CONFIG_SAMPLE_RUST_DRIVER_FAUX) += rust_driver_faux.o +obj-$(CONFIG_SAMPLE_RUST_DRIVER_AUXILIARY) += rust_driver_auxiliary.o +obj-$(CONFIG_SAMPLE_RUST_DRIVER_SERDEV) += rust_driver_serdev.o +obj-$(CONFIG_SAMPLE_RUST_CONFIGFS) += rust_configfs.o +obj-$(CONFIG_SAMPLE_RUST_SOC) += rust_soc.o + +rust_print-y := rust_print_main.o rust_print_events.o + +subdir-$(CONFIG_SAMPLE_RUST_HOSTPROGS) += hostprogs -- cgit v1.3.1