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OvmfPkg/X86QemuLoadImageLib: plug cmdline blob leak on success

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When QemuLoadKernelImage() ends successfully, the command-line blob is
not freed, even though it is not used elsewhere (its content is already
copied to KernelLoadedImage->LoadOptions).  The memory leak bug was
introduced in commit 7c47d89003a6 ("OvmfPkg: implement QEMU loader
library for X86 with legacy fallback", 2020-03-05).

Cc: Ard Biesheuvel <ardb+tianocore@kernel.org>
Cc: Jordan Justen <jordan.l.justen@intel.com>
Cc: James Bottomley <jejb@linux.ibm.com>
Cc: Tobin Feldman-Fitzthum <tobin@linux.ibm.com>
Reported-by: Laszlo Ersek <lersek@redhat.com>
Fixes: 7c47d89003a6f8f7f6f0ce8ca7d3e87c630d14cc
Signed-off-by: Dov Murik <dovmurik@linux.ibm.com>
Message-Id: <20210628105110.379951-3-dovmurik@linux.ibm.com>
Reviewed-by: Laszlo Ersek <lersek@redhat.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
This commit is contained in:
Dov Murik 2021-06-28 10:51:07 +00:00 committed by mergify[bot]
parent 5a2e030f73
commit 932449710c
1 changed files with 4 additions and 2 deletions
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6
OvmfPkg/Library/X86QemuLoadImageLib/X86QemuLoadImageLib.c
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@ -446,14 +446,16 @@ QemuLoadKernelImage (
}
*ImageHandle = KernelImageHandle;
return EFI_SUCCESS;
Status = EFI_SUCCESS;
FreeCommandLine:
if (CommandLineSize > 0) {
FreePool (CommandLine);
}
UnloadImage:
gBS->UnloadImage (KernelImageHandle);
if (EFI_ERROR (Status)) {
gBS->UnloadImage (KernelImageHandle);
}
return Status;
}