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| author | Kumar Kartikeya Dwivedi <memxor@gmail.com> | 2026-09-04 10:43:19 +0200 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-09-04 07:58:36 -0700 |
| commit | 6668ed271eaefaa63e686bdfbedaeb7b8e492722 (patch) | |
| tree | 58e8288fead484f6755ad0815fc74c3742663761 /sound/isa/gus/Makefile | |
| download | linux-stable-6668ed271eaefaa63e686bdfbedaeb7b8e492722.tar.gz linux-stable-6668ed271eaefaa63e686bdfbedaeb7b8e492722.zip | |
selftests/bpf: Reject graph kptr use after RCU unlockgrafted
Add a sleepable verifier test that loads a graph-node local kptr in an
explicit RCU read-side critical section, then passes its node to
bpf_rbtree_remove() after the section ends.
Before the verifier fix, the stale NON_OWN_REF flag makes the node look like
a live borrowed reference and the program is accepted. After the fix, the
pointer is demoted without NON_OWN_REF and the graph kfunc argument is
rejected.
Also exercise a graph kptr loaded while a spin lock provides implicit RCU
protection. The pointer must be invalidated when the lock is released, which
guards the required ordering between non-owning-reference invalidation and
RCU demotion.
Update the existing fault-protected load test state description. The
post-unlock pointer no longer carries NON_OWN_REF, but remains readable
because the load is rewritten to use BPF_PROBE_MEM.
Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20260904084325.52250-7-memxor@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'sound/isa/gus/Makefile')
| -rw-r--r-- | sound/isa/gus/Makefile | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/sound/isa/gus/Makefile b/sound/isa/gus/Makefile new file mode 100644 index 000000000..4924c1904 --- /dev/null +++ b/sound/isa/gus/Makefile @@ -0,0 +1,25 @@ +# SPDX-License-Identifier: GPL-2.0 +# +# Makefile for ALSA +# Copyright (c) 2001 by Jaroslav Kysela <perex@perex.cz> +# + +snd-gus-lib-y := gus_main.o \ + gus_io.o gus_irq.o gus_timer.o \ + gus_mem.o gus_mem_proc.o gus_dram.o gus_dma.o gus_volume.o \ + gus_pcm.o gus_mixer.o \ + gus_uart.o \ + gus_reset.o + +snd-gusclassic-y := gusclassic.o +snd-gusextreme-y := gusextreme.o +snd-gusmax-y := gusmax.o +snd-interwave-y := interwave.o +snd-interwave-stb-y := interwave-stb.o + +# Toplevel Module Dependency +obj-$(CONFIG_SND_GUSCLASSIC) += snd-gusclassic.o snd-gus-lib.o +obj-$(CONFIG_SND_GUSMAX) += snd-gusmax.o snd-gus-lib.o +obj-$(CONFIG_SND_GUSEXTREME) += snd-gusextreme.o snd-gus-lib.o +obj-$(CONFIG_SND_INTERWAVE) += snd-interwave.o snd-gus-lib.o +obj-$(CONFIG_SND_INTERWAVE_STB) += snd-interwave-stb.o snd-gus-lib.o |