linux/drivers/firmware/efi
Ard Biesheuvel 464fb126d9 efi/libstub/file: Merge file name buffers to reduce stack usage
Arnd reports that commit

  9302c1bb8e ("efi/libstub: Rewrite file I/O routine")

reworks the file I/O routines in a way that triggers the following
warning:

  drivers/firmware/efi/libstub/file.c:240:1: warning: the frame size
            of 1200 bytes is larger than 1024 bytes [-Wframe-larger-than=]

We can work around this issue dropping an instance of efi_char16_t[256]
from the stack frame, and reusing the 'filename' field of the file info
struct that we use to obtain file information from EFI (which contains
the file name even though we already know it since we used it to open
the file in the first place)

Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20200409130434.6736-8-ardb@kernel.org
2020-04-14 08:32:15 +02:00
..
libstub efi/libstub/file: Merge file name buffers to reduce stack usage 2020-04-14 08:32:15 +02:00
test efi/efi_test: Lock down /dev/efi_test and require CAP_SYS_ADMIN 2019-10-31 09:40:21 +01:00
Kconfig efi: Add embedded peripheral firmware support 2020-03-03 10:28:00 +01:00
Makefile efi/libstub: Avoid linking libstub/lib-ksyms.o into vmlinux 2020-03-08 10:00:06 +01:00
apple-properties.c efi/dev-path-parser: Add struct definition for vendor type device path nodes 2020-02-23 21:59:42 +01:00
arm-init.c Merge branch 'efi-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2020-03-30 16:13:08 -07:00
arm-runtime.c efi/arm: Drop unnecessary references to efi.systab 2020-02-23 21:59:42 +01:00
capsule-loader.c efi/capsule-loader: Drop superfluous assignment 2020-02-23 21:58:31 +01:00
capsule.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
cper-arm.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
cper-x86.c efi: Decode IA32/X64 Context Info structure 2018-05-14 08:57:48 +02:00
cper.c efi/cper: Use scnprintf() for avoiding potential buffer overflow 2020-04-14 08:32:11 +02:00
dev-path-parser.c efi/dev-path-parser: Add struct definition for vendor type device path nodes 2020-02-23 21:59:42 +01:00
earlycon.c efi/earlycon: Fix write-combine mapping on x86 2019-12-25 10:46:06 +01:00
efi-bgrt.c efi/bgrt: Accept BGRT tables with a version of 0 2020-02-22 23:37:37 +01:00
efi-pstore.c efi: Fix a mistype in comments mentioning efivar_entry_iter_begin() 2020-03-08 10:00:07 +01:00
efi.c Stable shared branch between EFI and driver tree 2020-03-20 14:50:48 +01:00
efibc.c efibc: Replace variable set function in notifier call 2019-06-22 10:24:57 +02:00
efivars.c Merge branch 'efi/urgent' into efi/core, to pick up fixes 2020-03-08 09:57:58 +01:00
embedded-firmware.c platform/x86: touchscreen_dmi: Add EFI embedded firmware info support 2020-03-20 14:57:54 +01:00
esrt.c efi/esrt: Clean up efi_esrt_init 2020-02-23 21:57:59 +01:00
fake_mem.c efi: Fix handling of multiple efi_fake_mem= entries 2020-01-20 08:14:29 +01:00
fake_mem.h x86/efi: Add efi_fake_mem support for EFI_MEMORY_SP 2019-11-07 15:44:23 +01:00
fdtparams.c efi/arm: Rewrite FDT param discovery routines 2020-02-23 21:59:42 +01:00
memattr.c efi: Move mem_attr_table out of struct efi 2020-02-23 21:59:42 +01:00
memmap.c efi: Fix handling of multiple efi_fake_mem= entries 2020-01-20 08:14:29 +01:00
rci2-table.c efi: Don't attempt to map RCI2 config table if it doesn't exist 2019-12-10 12:13:02 +01:00
reboot.c efi: Use EFI ResetSystem only when available 2020-02-23 21:59:42 +01:00
runtime-map.c efi: Replace GPL license boilerplate with SPDX headers 2019-02-04 08:27:25 +01:00
runtime-wrappers.c efi: Add 'runtime' pointer to struct efi 2020-02-23 21:59:42 +01:00
tpm.c efi/tpm: Return -EINVAL when determining tpm final events log size fails 2019-10-31 09:40:17 +01:00
vars.c efi: Fix a mistype in comments mentioning efivar_entry_iter_begin() 2020-03-08 10:00:07 +01:00
x86_fake_mem.c x86/efi: Add efi_fake_mem support for EFI_MEMORY_SP 2019-11-07 15:44:23 +01:00