From: Ard Biesheuvel <ardb@kernel.org>
To: linux-efi@vger.kernel.org, Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>
Cc: Ard Biesheuvel <ardb@kernel.org>,
linux-kernel@vger.kernel.org, Arnd Bergmann <arnd@arndb.de>,
Arvind Sankar <nivedita@alum.mit.edu>,
Guenter Roeck <linux@roeck-us.net>, Joe Perches <joe@perches.com>
Subject: [PATCH 01/15] efi/x86: Use correct size for boot_params
Date: Fri, 8 May 2020 20:01:43 +0200 [thread overview]
Message-ID: <20200508180157.1816-2-ardb@kernel.org> (raw)
In-Reply-To: <20200508180157.1816-1-ardb@kernel.org>
From: Arvind Sankar <nivedita@alum.mit.edu>
struct boot_params is only 4096 bytes, not 16384. Fix this by using
sizeof(struct boot_params) instead of hardcoding the incorrect value.
Signed-off-by: Arvind Sankar <nivedita@alum.mit.edu>
Link: https://lore.kernel.org/r/20200430182843.2510180-2-nivedita@alum.mit.edu
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
---
drivers/firmware/efi/libstub/x86-stub.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/drivers/firmware/efi/libstub/x86-stub.c b/drivers/firmware/efi/libstub/x86-stub.c
index 597793fe8d22..d4bafd7f6f9f 100644
--- a/drivers/firmware/efi/libstub/x86-stub.c
+++ b/drivers/firmware/efi/libstub/x86-stub.c
@@ -379,13 +379,14 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
image_base = efi_table_attr(image, image_base);
image_offset = (void *)startup_32 - image_base;
- status = efi_allocate_pages(0x4000, (unsigned long *)&boot_params, ULONG_MAX);
+ status = efi_allocate_pages(sizeof(struct boot_params),
+ (unsigned long *)&boot_params, ULONG_MAX);
if (status != EFI_SUCCESS) {
efi_printk("Failed to allocate lowmem for boot params\n");
efi_exit(handle, status);
}
- memset(boot_params, 0x0, 0x4000);
+ memset(boot_params, 0x0, sizeof(struct boot_params));
hdr = &boot_params->hdr;
@@ -439,7 +440,7 @@ efi_status_t __efiapi efi_pe_entry(efi_handle_t handle,
fail2:
efi_free(options_size, (unsigned long)cmdline_ptr);
fail:
- efi_free(0x4000, (unsigned long)boot_params);
+ efi_free(sizeof(struct boot_params), (unsigned long)boot_params);
efi_exit(handle, status);
}
--
2.17.1
next prev parent reply other threads:[~2020-05-08 18:02 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-08 18:01 [GIT PULL 00/15] More EFI changes for v5.8 Ard Biesheuvel
2020-05-08 18:01 ` Ard Biesheuvel [this message]
2020-05-08 18:01 ` [PATCH 02/15] efi/libstub: Add a helper function to split 64-bit values Ard Biesheuvel
2020-05-08 18:01 ` [PATCH 03/15] efi/libstub: Move pr_efi/pr_efi_err into efi namespace Ard Biesheuvel
2020-05-08 18:01 ` [PATCH 04/15] efi/x86: Use efi_err for error messages Ard Biesheuvel
2020-05-08 18:01 ` [PATCH 05/15] efi/gop: " Ard Biesheuvel
2020-05-08 18:01 ` [PATCH 06/15] efi/tpm: " Ard Biesheuvel
2020-05-08 18:01 ` [PATCH 07/15] efi/libstub: Upgrade ignored dtb= argument message to error Ard Biesheuvel
2020-05-08 18:01 ` [PATCH 08/15] efi/x86: Move command-line initrd loading to efi_main Ard Biesheuvel
2020-05-27 22:30 ` Williams, Dan J
2020-05-27 22:46 ` Arvind Sankar
2020-05-27 22:56 ` Dan Williams
2020-05-27 23:02 ` Arvind Sankar
2020-05-27 23:13 ` Dan Williams
2020-05-27 23:26 ` [PATCH] efi/x86: Don't blow away existing initrd Arvind Sankar
2020-05-28 6:34 ` Ard Biesheuvel
2020-05-08 18:01 ` [PATCH 09/15] efi/libstub: Unify initrd loading across architectures Ard Biesheuvel
2020-05-08 18:01 ` [PATCH 10/15] efi/x86: Support builtin command line Ard Biesheuvel
2020-05-08 18:01 ` [PATCH 11/15] efi/libstub: Check return value of efi_parse_options Ard Biesheuvel
2020-05-08 18:01 ` [PATCH 12/15] efi/libstub: Fix mixed mode boot issue after macro refactor Ard Biesheuvel
2020-05-08 18:01 ` [PATCH 13/15] efi/libstub/x86: Work around LLVM ELF quirk build regression Ard Biesheuvel
2020-05-08 18:01 ` [PATCH 14/15] efi/libstub: Make efi_printk() input argument const char* Ard Biesheuvel
2020-05-08 18:01 ` [PATCH 15/15] efi/libstub: Correct comment typos Ard Biesheuvel
2020-05-14 9:05 ` [GIT PULL 00/15] More EFI changes for v5.8 Ard Biesheuvel
2020-05-20 7:20 ` Ard Biesheuvel
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