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author | Juergen Gross <jgross@suse.com> | 2018-12-03 13:38:11 +0300 |
---|---|---|
committer | Ingo Molnar <mingo@kernel.org> | 2018-12-03 13:56:37 +0300 |
commit | 182ddd16194cd082f25fa1b063dae3c7c5cce384 (patch) | |
tree | 35dcc5ea763f432dc9da0d12c08b80af07abfa46 /arch/x86/include/asm/bootparam_utils.h | |
parent | 2595646791c319cadfdbf271563aac97d0843dc7 (diff) | |
download | linux-182ddd16194cd082f25fa1b063dae3c7c5cce384.tar.xz |
x86/boot: Clear RSDP address in boot_params for broken loaders
Gunnar Krueger reported a systemd-boot failure and bisected it down to:
e6e094e053af75 ("x86/acpi, x86/boot: Take RSDP address from boot params if available")
In case a broken boot loader doesn't clear its 'struct boot_params', clear
rsdp_addr in sanitize_boot_params().
Reported-by: Gunnar Krueger <taijian@posteo.de>
Tested-by: Gunnar Krueger <taijian@posteo.de>
Signed-off-by: Juergen Gross <jgross@suse.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: bp@alien8.de
Cc: sstabellini@kernel.org
Fixes: e6e094e053af75 ("x86/acpi, x86/boot: Take RSDP address from boot params if available")
Link: http://lkml.kernel.org/r/20181203103811.17056-1-jgross@suse.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/bootparam_utils.h')
-rw-r--r-- | arch/x86/include/asm/bootparam_utils.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/x86/include/asm/bootparam_utils.h b/arch/x86/include/asm/bootparam_utils.h index a07ffd23e4dd..f6f6ef436599 100644 --- a/arch/x86/include/asm/bootparam_utils.h +++ b/arch/x86/include/asm/bootparam_utils.h @@ -36,6 +36,7 @@ static void sanitize_boot_params(struct boot_params *boot_params) */ if (boot_params->sentinel) { /* fields in boot_params are left uninitialized, clear them */ + boot_params->acpi_rsdp_addr = 0; memset(&boot_params->ext_ramdisk_image, 0, (char *)&boot_params->efi_info - (char *)&boot_params->ext_ramdisk_image); |