From: Jason Gunthorpe <jgg@nvidia.com>
To: Alexandre Ghiti <alex@ghiti.fr>,
Albert Ou <aou@eecs.berkeley.edu>,
Ard Biesheuvel <ardb@kernel.org>, Arnd Bergmann <arnd@arndb.de>,
Catalin Marinas <catalin.marinas@arm.com>,
Jonathan Corbet <corbet@lwn.net>, David Sterba <dsterba@suse.com>,
Ilias Apalodimas <ilias.apalodimas@linaro.org>,
linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-doc@vger.kernel.org, linux-efi@vger.kernel.org,
linux-riscv@lists.infradead.org,
Mark Rutland <mark.rutland@arm.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Paul Walmsley <pjw@kernel.org>,
Randy Dunlap <rdunlap@infradead.org>,
Simon Glass <sjg@chromium.org>,
Shuah Khan <skhan@linuxfoundation.org>,
Nick Terrell <terrelln@fb.com>, Will Deacon <will@kernel.org>
Cc: "Alexandre Ghiti" <alexghiti@rivosinc.com>,
"Conor Dooley" <conor.dooley@microchip.com>,
"Jonathan Cameron" <jonathan.cameron@oss.qualcomm.com>,
linux-integrity@vger.kernel.org,
"Palmer Dabbelt" <palmer@rivosinc.com>,
patches@lists.linux.dev, "Piotr Król" <piotr.krol@3mdeb.com>,
"Ross Philipson" <ross.philipson@gmail.com>,
"Sami Tolvanen" <samitolvanen@google.com>,
"Song Shuai" <songshuaishuai@tinylab.org>
Subject: [PATCH v2 02/15] efi/riscv: libstub: Don't set image_size in handle_kernel_image()
Date: Fri, 2 Oct 2026 20:31:39 -0300 [thread overview]
Message-ID: <2-v2-989a18390eb1+486-arm64_drtm_jgg@nvidia.com> (raw)
In-Reply-To: <0-v2-989a18390eb1+486-arm64_drtm_jgg@nvidia.com>
Sashiko points out the image_size should only be set if image_addr was
reassigned to some allocated memory. If image_size is not zero then the
caller will free the image_addr pointer.
efi_kaslr_relocate_kernel() never works like that, if it changes
image_addr to allocated memory the free is done through reserve_size.
Fixes: b7ac4b8ee73d ("riscv: libstub: Implement KASLR by using generic functions")
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
---
drivers/firmware/efi/libstub/riscv-stub.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/firmware/efi/libstub/riscv-stub.c b/drivers/firmware/efi/libstub/riscv-stub.c
index e7d9204baee312..725b634c517919 100644
--- a/drivers/firmware/efi/libstub/riscv-stub.c
+++ b/drivers/firmware/efi/libstub/riscv-stub.c
@@ -37,17 +37,14 @@ efi_status_t handle_kernel_image(unsigned long *image_addr,
kernel_codesize = __init_text_end - _start;
kernel_memsize = kernel_size + (_end - _edata);
*image_addr = (unsigned long)_start;
- *image_size = kernel_memsize;
- *reserve_size = *image_size;
+ *reserve_size = kernel_memsize;
status = efi_kaslr_relocate_kernel(image_addr,
reserve_addr, reserve_size,
kernel_size, kernel_codesize, kernel_memsize,
efi_kaslr_get_phys_seed(image_handle));
- if (status != EFI_SUCCESS) {
+ if (status != EFI_SUCCESS)
efi_err("Failed to relocate kernel\n");
- *image_size = 0;
- }
return status;
}
--
2.43.0
next prev parent reply other threads:[~2026-10-02 23:32 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-02 23:31 [PATCH v2 00/15] arm64: DRTM, boot portion Jason Gunthorpe
2026-10-02 23:31 ` [PATCH v2 01/15] efi/libstub: Fix error unwind freeing fdt in allocate_new_fdt_and_exit_boot() Jason Gunthorpe
2026-10-02 23:31 ` Jason Gunthorpe [this message]
2026-10-02 23:31 ` [PATCH v2 03/15] efi/libstub: Free cmdline_ptr in efi_pe_entry Jason Gunthorpe
2026-10-02 23:31 ` [PATCH v2 04/15] efi/libstub: Add a general way to get symbols from the vmlinux into zboot Jason Gunthorpe
2026-10-02 23:31 ` [PATCH v2 05/15] arm64/efi: Use CONFIG_EFI_STUB_IMAGE_INFO for code_size Jason Gunthorpe
2026-10-02 23:31 ` [PATCH v2 06/15] efi/zboot: Lift efi_cache_sync_image() from efi_zboot_decompress() Jason Gunthorpe
2026-10-02 23:31 ` [PATCH v2 07/15] efi/libstub: Add generic arch callbacks for DRTM Jason Gunthorpe
2026-10-02 23:31 ` [PATCH v2 08/15] efi/libstub: Have efi_kaslr_relocate_kernel() handle extra_size Jason Gunthorpe
2026-10-02 23:31 ` [PATCH v2 09/15] efi: Add a __efi_data_handoff section annotation Jason Gunthorpe
2026-10-02 23:31 ` [PATCH v2 10/15] efi/libstub: Put the stub's writable data in unique sections for DRTM Jason Gunthorpe
2026-10-02 23:31 ` [PATCH v2 11/15] arm64: drtm: Add macro definitions for DEN0113 Jason Gunthorpe
2026-10-02 23:31 ` [PATCH v2 12/15] arm64: drtm: Update the linker script for EFI_STUB_DRTM Jason Gunthorpe
2026-10-02 23:31 ` [PATCH v2 13/15] arm64: drtm: Add drtm_entry point to head.S Jason Gunthorpe
2026-10-02 23:31 ` [PATCH v2 14/15] arm64: drtm: Call UNPROTECT_MEMORY Jason Gunthorpe
2026-10-02 23:31 ` [PATCH v2 15/15] efi/arm64: Implement ARM64 DRTM in the stub Jason Gunthorpe
2026-10-06 10:30 ` [PATCH v2 00/15] arm64: DRTM, boot portion Ard Biesheuvel
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