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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/crypto/ccp/sfs.h | |
| 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/crypto/ccp/sfs.h')
| -rw-r--r-- | drivers/crypto/ccp/sfs.h | 47 |
1 files changed, 47 insertions, 0 deletions
diff --git a/drivers/crypto/ccp/sfs.h b/drivers/crypto/ccp/sfs.h new file mode 100644 index 000000000..97704c210 --- /dev/null +++ b/drivers/crypto/ccp/sfs.h @@ -0,0 +1,47 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * AMD Platform Security Processor (PSP) Seamless Firmware (SFS) Support. + * + * Copyright (C) 2025 Advanced Micro Devices, Inc. + * + * Author: Ashish Kalra <ashish.kalra@amd.com> + */ + +#ifndef __SFS_H__ +#define __SFS_H__ + +#include <uapi/linux/psp-sfs.h> + +#include <linux/device.h> +#include <linux/miscdevice.h> +#include <linux/psp-sev.h> +#include <linux/psp-platform-access.h> +#include <linux/set_memory.h> + +#include "psp-dev.h" + +struct sfs_misc_dev { + struct kref refcount; + struct miscdevice misc; +}; + +struct sfs_command { + struct psp_ext_req_buffer_hdr hdr; + u8 buf[PAGE_SIZE - sizeof(struct psp_ext_req_buffer_hdr)]; + u8 sfs_buffer[]; +} __packed; + +struct sfs_device { + struct device *dev; + struct psp_device *psp; + + struct page *page; + struct sfs_command *command_buf; + + struct sfs_misc_dev *misc; +}; + +void sfs_dev_destroy(struct psp_device *psp); +int sfs_dev_init(struct psp_device *psp); + +#endif /* __SFS_H__ */ |