|
 |
f0ad2aa |
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
|
f0ad2aa |
From: Chris Coulson <chris.coulson@canonical.com>
|
|
|
f0ad2aa |
Date: Tue, 3 May 2022 09:47:35 +0200
|
|
|
f0ad2aa |
Subject: [PATCH] loader/i386/efi/linux: Fix a memory leak in the initrd
|
|
|
f0ad2aa |
command
|
|
|
f0ad2aa |
|
|
|
f0ad2aa |
Subsequent invocations of the initrd command result in the previous
|
|
|
f0ad2aa |
initrd being leaked, so fix that.
|
|
|
f0ad2aa |
|
|
|
f0ad2aa |
Signed-off-by: Chris Coulson <chris.coulson@canonical.com>
|
|
|
f0ad2aa |
(cherry picked from commit d98af31ce1e31bb22163960d53f5eb28c66582a0)
|
|
|
f0ad2aa |
---
|
|
|
f0ad2aa |
grub-core/loader/i386/efi/linux.c | 21 ++++++++++++---------
|
|
|
f0ad2aa |
1 file changed, 12 insertions(+), 9 deletions(-)
|
|
|
f0ad2aa |
|
|
|
f0ad2aa |
diff --git a/grub-core/loader/i386/efi/linux.c b/grub-core/loader/i386/efi/linux.c
|
|
|
f0ad2aa |
index e3c2d6fe0b..9e5c11ac69 100644
|
|
|
f0ad2aa |
--- a/grub-core/loader/i386/efi/linux.c
|
|
|
f0ad2aa |
+++ b/grub-core/loader/i386/efi/linux.c
|
|
|
f0ad2aa |
@@ -209,6 +209,7 @@ grub_cmd_initrd (grub_command_t cmd, int argc, char *argv[])
|
|
|
f0ad2aa |
grub_uint8_t *ptr;
|
|
|
f0ad2aa |
struct grub_linuxefi_context *context = (struct grub_linuxefi_context *) cmd->data;
|
|
|
f0ad2aa |
struct linux_kernel_params *params;
|
|
|
f0ad2aa |
+ void *initrd_mem = 0;
|
|
|
f0ad2aa |
|
|
|
f0ad2aa |
if (argc == 0)
|
|
|
f0ad2aa |
{
|
|
|
f0ad2aa |
@@ -241,19 +242,19 @@ grub_cmd_initrd (grub_command_t cmd, int argc, char *argv[])
|
|
|
f0ad2aa |
}
|
|
|
f0ad2aa |
}
|
|
|
f0ad2aa |
|
|
|
f0ad2aa |
- context->initrd_mem = kernel_alloc(size, N_("can't allocate initrd"));
|
|
|
f0ad2aa |
- if (context->initrd_mem == NULL)
|
|
|
f0ad2aa |
+ initrd_mem = kernel_alloc(size, N_("can't allocate initrd"));
|
|
|
f0ad2aa |
+ if (initrd_mem == NULL)
|
|
|
f0ad2aa |
goto fail;
|
|
|
f0ad2aa |
- grub_dprintf ("linux", "initrd_mem = %p\n", context->initrd_mem);
|
|
|
f0ad2aa |
+ grub_dprintf ("linux", "initrd_mem = %p\n", initrd_mem);
|
|
|
f0ad2aa |
|
|
|
f0ad2aa |
params->ramdisk_size = LOW_U32(size);
|
|
|
f0ad2aa |
- params->ramdisk_image = LOW_U32(context->initrd_mem);
|
|
|
f0ad2aa |
+ params->ramdisk_image = LOW_U32(initrd_mem);
|
|
|
f0ad2aa |
#if defined(__x86_64__)
|
|
|
f0ad2aa |
params->ext_ramdisk_size = HIGH_U32(size);
|
|
|
f0ad2aa |
- params->ext_ramdisk_image = HIGH_U32(context->initrd_mem);
|
|
|
f0ad2aa |
+ params->ext_ramdisk_image = HIGH_U32(initrd_mem);
|
|
|
f0ad2aa |
#endif
|
|
|
f0ad2aa |
|
|
|
f0ad2aa |
- ptr = context->initrd_mem;
|
|
|
f0ad2aa |
+ ptr = initrd_mem;
|
|
|
f0ad2aa |
|
|
|
f0ad2aa |
for (i = 0; i < nfiles; i++)
|
|
|
f0ad2aa |
{
|
|
|
f0ad2aa |
@@ -270,6 +271,9 @@ grub_cmd_initrd (grub_command_t cmd, int argc, char *argv[])
|
|
|
f0ad2aa |
ptr += ALIGN_UP_OVERHEAD (cursize, 4);
|
|
|
f0ad2aa |
}
|
|
|
f0ad2aa |
|
|
|
f0ad2aa |
+ kernel_free(context->initrd_mem, params->ramdisk_size);
|
|
|
f0ad2aa |
+
|
|
|
f0ad2aa |
+ context->initrd_mem = initrd_mem;
|
|
|
f0ad2aa |
params->ramdisk_size = size;
|
|
|
f0ad2aa |
|
|
|
f0ad2aa |
fail:
|
|
|
f0ad2aa |
@@ -277,9 +281,8 @@ grub_cmd_initrd (grub_command_t cmd, int argc, char *argv[])
|
|
|
f0ad2aa |
grub_file_close (files[i]);
|
|
|
f0ad2aa |
grub_free (files);
|
|
|
f0ad2aa |
|
|
|
f0ad2aa |
- if (context->initrd_mem && grub_errno)
|
|
|
f0ad2aa |
- grub_efi_free_pages ((grub_efi_physical_address_t)(grub_addr_t)context->initrd_mem,
|
|
|
f0ad2aa |
- BYTES_TO_PAGES(size));
|
|
|
f0ad2aa |
+ if (initrd_mem && grub_errno)
|
|
|
f0ad2aa |
+ kernel_free (initrd_mem, size);
|
|
|
f0ad2aa |
|
|
|
f0ad2aa |
return grub_errno;
|
|
|
f0ad2aa |
}
|