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| author | Eduard Zingerman <eddyz87@gmail.com> | 2026-09-04 17:05:56 -0700 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-09-04 18:17:30 -0700 |
| commit | 506ada89629ec7059b96ecfb0dc7d33ece0103ca (patch) | |
| tree | 0b07297409b68d2333fb4f0eae7f3b072eb68d4c /drivers/dibs/Kconfig | |
| download | linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.tar.gz linux-stable-506ada89629ec7059b96ecfb0dc7d33ece0103ca.zip | |
bpf: mark a NULL kfunc argument precisegrafted
check_kfunc_arg() allows bpf_register_is_null() for nullable arguments
w/o marking the underlying scalar register precise. Hence a checkpoint
created on such a path would prune against arbitrary scalar value.
Fixes: 3bda08b63670 ("bpf: Allow NULL buffers in bpf_dynptr_slice(_rw)")
Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20260904-register-is-null-precise-fixes-v1-5-0f5a360ff15d@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'drivers/dibs/Kconfig')
| -rw-r--r-- | drivers/dibs/Kconfig | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/dibs/Kconfig b/drivers/dibs/Kconfig new file mode 100644 index 000000000..8f41e5622 --- /dev/null +++ b/drivers/dibs/Kconfig @@ -0,0 +1,23 @@ +# SPDX-License-Identifier: GPL-2.0 +config DIBS + tristate "Direct Internal Buffer Sharing support" + default n + help + Direct Internal Buffer Sharing (DIBS) is a communication method that + uses common physical (internal) memory for synchronous direct access + into a remote buffer. + + Select this option to provide the abstraction layer between + dibs devices and dibs clients like the SMC protocol. + The module name is dibs. + +config DIBS_LO + bool "Intra-OS shortcut with dibs loopback" + depends on DIBS + default n + help + DIBS_LO enables the creation of an software-emulated dibs device + named lo which can be used for transferring data when communication + occurs within the same OS. This helps in convenient testing of + dibs clients, since dibs loopback is independent of architecture or + hardware. |