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Ard Biesheuvel 75dde792d6 efi/x86: Free EFI memory map only when installing a new one. 
The logic in __efi_memmap_init() is shared between two different
execution flows:
- mapping the EFI memory map early or late into the kernel VA space, so
  that its entries can be accessed;
- the x86 specific cloning of the EFI memory map in order to insert new
  entries that are created as a result of making a memory reservation
  via a call to efi_mem_reserve().

In the former case, the underlying memory containing the kernel's view
of the EFI memory map (which may be heavily modified by the kernel
itself on x86) is not modified at all, and the only thing that changes
is the virtual mapping of this memory, which is different between early
and late boot.

In the latter case, an entirely new allocation is created that carries a
new, updated version of the kernel's view of the EFI memory map. When
installing this new version, the old version will no longer be
referenced, and if the memory was allocated by the kernel, it will leak
unless it gets freed.

The logic that implements this freeing currently lives on the code path
that is shared between these two use cases, but it should only apply to
the latter. So move it to the correct spot.

While at it, drop the dummy definition for non-x86 architectures, as
that is no longer needed.

Cc: <stable@vger.kernel.org>
Fixes: f0ef652347 ("efi: Fix efi_memmap_alloc() leaks")
Tested-by: Ashish Kalra <Ashish.Kalra@amd.com>
Link: https://lore.kernel.org/all/36ad5079-4326-45ed-85f6-928ff76483d3@amd.com
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
2024-06-15 10:25:02 +02:00
..
accel The usual shower of singleton fixes and minor series all over MM, 2024-05-19 09:21:03 -07:00
accessibility Char/Misc bugfix for 6.10-rc1 2024-05-24 08:43:25 -07:00
acpi Char/Misc and other driver subsystem changes for 6.10-rc1 2024-05-22 12:26:46 -07:00
amba
android
ata ata: libata-core: Add ATA_HORKAGE_NOLPM for Apacer AS340 2024-05-31 15:14:06 +02:00
atm atm/fore200e: Delete unused 'fore200e_boards' 2024-05-06 18:26:47 -07:00
auxdisplay - Fix-ups 2024-05-22 10:45:12 -07:00
base regmap-i2c: Subtract reg size from max_write 2024-05-27 01:30:33 +01:00
bcma
block null_blk: Do not allow runt zone with zone capacity smaller then zone size 2024-05-30 15:03:52 -06:00
bluetooth virtio: features, fixes, cleanups 2024-05-23 12:04:36 -07:00
bus tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
cache
cdrom cdrom: rearrange last_media_change check to avoid unintentional overflow 2024-05-15 12:59:55 -06:00
cdx
char This push fixes a new run-time warning triggered by tpm. 2024-05-29 09:12:58 -07:00
clk I'm actually surprised this time. There aren't any new Qualcomm SoC clk 2024-05-18 12:48:37 -07:00
clocksource RISC-V Patches for the 6.10 Merge Window, Part 1 2024-05-22 09:56:00 -07:00
comedi
connector
counter
cpufreq Power management fixes for 6.10-rc1 2024-05-21 11:40:49 -07:00
cpuidle pmdomain core: 2024-05-16 08:50:32 -07:00
crypto virtio: features, fixes, cleanups 2024-05-23 12:04:36 -07:00
cxl tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
dax The usual shower of singleton fixes and minor series all over MM, 2024-05-19 09:21:03 -07:00
dca
devfreq PM / devfreq: exynos: Use DEFINE_SIMPLE_DEV_PM_OPS for PM functions 2024-05-09 00:30:37 +09:00
dio
dma dmaengine updates for v6.10 2024-05-21 11:15:56 -07:00
dma-buf Merge remote-tracking branch 'drm/drm-fixes' into drm-misc-fixes 2024-05-28 22:21:34 +02:00
dpll dpll: fix return value check for kmemdup 2024-05-13 16:53:53 -07:00
edac - Have skx_edac decode error addresses belonging to SGX properly 2024-05-14 08:31:10 -07:00
eisa
extcon extcon: adc-jack: Document missing struct members 2024-05-09 01:03:39 +09:00
firewire firewire: add missing MODULE_DESCRIPTION() to test modules 2024-05-27 07:34:58 +09:00
firmware efi/x86: Free EFI memory map only when installing a new one. 2024-06-15 10:25:02 +02:00
fpga Char/Misc and other driver subsystem changes for 6.10-rc1 2024-05-22 12:26:46 -07:00
fsi
gnss
gpio virtio: features, fixes, cleanups 2024-05-23 12:04:36 -07:00
gpu Short summary of fixes pull: 2024-05-31 11:51:20 +10:00
greybus
hid - Fix-ups 2024-05-22 10:45:12 -07:00
hsi
hte
hv Char/Misc and other driver subsystem changes for 6.10-rc1 2024-05-22 12:26:46 -07:00
hwmon hwmon: (shtc1) Fix property misspelling 2024-05-30 09:05:19 -07:00
hwspinlock
hwtracing Char/Misc and other driver subsystem changes for 6.10-rc1 2024-05-22 12:26:46 -07:00
i2c I2C core removes an argument from the i2c_mux_add_adapter() call to 2024-05-20 08:55:18 -07:00
i3c i3c: dw: Add hot-join support. 2024-05-23 00:29:19 +02:00
idle
iio Char/Misc and other driver subsystem changes for 6.10-rc1 2024-05-22 12:26:46 -07:00
infiniband tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
input Input updates for v6.10-rc0 2024-05-24 09:01:21 -07:00
interconnect tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
iommu tracing: Remove second argument of __assign_str() 2024-05-23 12:28:01 -07:00
ipack
irqchip irqchip: riscv-imsic: Fixup riscv_ipi_set_virq_range() conflict 2024-05-23 04:48:40 -07:00
isdn
leds
macintosh powerpc updates for 6.10 2024-05-17 09:05:46 -07:00
mailbox mailbox: zynqmp-ipi: drop irq_to_desc() call 2024-05-31 12:39:15 -05:00
mcb
md bcache: code cleanup in __bch_bucket_alloc_set() 2024-05-28 06:55:59 -06:00
media tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
memory ARM development updates for v6.10-rc1 2024-05-17 08:53:47 -07:00
memstick
message SCSI misc on 20240514 2024-05-14 18:25:53 -07:00
mfd pci-v6.10-changes 2024-05-21 10:09:28 -07:00
misc tracing: Remove second argument of __assign_str() 2024-05-23 12:28:01 -07:00
mmc MMC core: 2024-05-16 08:56:49 -07:00
most
mtd bd_inode series 2024-05-21 09:51:42 -07:00
mux
net ipvlan: Dont Use skb->sk in ipvlan_process_v{4,6}_outbound 2024-05-30 12:05:52 +02:00
nfc nfc/nci: Add the inconsistency check between the input data length and count 2024-05-29 13:08:31 +01:00
ntb
nubus
nvdimm virtio: features, fixes, cleanups 2024-05-23 12:04:36 -07:00
nvme nvmet: fix a possible leak when destroy a ctrl during qp establishment 2024-05-28 10:01:52 -07:00
nvmem
of I2C core removes an argument from the i2c_mux_add_adapter() call to 2024-05-20 08:55:18 -07:00
opp OPP Updates for 6.10 2024-05-17 13:01:24 +02:00
parisc
parport
pci pci-v6.10-changes 2024-05-21 10:09:28 -07:00
pcmcia
peci
perf arm64 fixes for -rc1 2024-05-23 12:09:22 -07:00
phy phy-for-6.10 2024-05-21 11:19:18 -07:00
pinctrl - New Device Support 2024-05-22 10:41:14 -07:00
platform platform/x86: touchscreen_dmi: Add info for the EZpad 6s Pro 2024-05-27 11:43:03 +02:00
pmdomain pmdomain providers: 2024-05-27 08:18:31 -07:00
pnp
power I2C core removes an argument from the i2c_mux_add_adapter() call to 2024-05-20 08:55:18 -07:00
powercap
pps
ps3
ptp Networking changes for 6.10. 2024-05-14 19:42:24 -07:00
pwm pwm: pca9685: Drop explicit initialization of struct i2c_device_id::driver_data to 0 2024-05-10 07:30:27 +02:00
rapidio rapidio: remove choice for enumeration 2024-05-14 23:36:19 +09:00
ras
regulator regulator: rtq2208: Fix invalid memory access when devm_of_regulator_put_matches is called 2024-05-28 13:22:54 +01:00
remoteproc remoteproc: k3-r5: Jump to error handling labels in start/stop errors 2024-05-06 13:34:12 -06:00
reset I'm actually surprised this time. There aren't any new Qualcomm SoC clk 2024-05-18 12:48:37 -07:00
rpmsg virtio: features, fixes, cleanups 2024-05-23 12:04:36 -07:00
rtc pcf8563: add wakeup-source support 2024-05-07 23:40:46 +02:00
s390 more s390 updates for 6.10 merge window 2024-05-21 12:09:36 -07:00
sbus
scsi hardening fixes for v6.10-rc2-take2 2024-06-02 09:15:28 -07:00
sh
siox
slimbus Linux 6.9-rc7 2024-05-08 19:21:51 +01:00
soc tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
soundwire soundwire updates for 6.10 2024-05-21 11:23:36 -07:00
spi spi: stm32: Don't warn about spurious interrupts 2024-05-29 19:12:09 +01:00
spmi spmi: pmic-arb: Add multi bus support 2024-05-08 19:46:11 +01:00
ssb
staging Staging driver changes for 6.10-rc1 2024-05-22 12:11:48 -07:00
target Assorted commits that had missed the last merge window... 2024-05-21 13:11:44 -07:00
tc
tee
thermal tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
thunderbolt thunderbolt: Changes for v6.10 merge window 2024-05-10 10:25:22 +01:00
tty TTY/Serial fixes for 6.10-rc1 2024-05-24 08:38:28 -07:00
ufs SCSI misc on 20240514 2024-05-14 18:25:53 -07:00
uio
usb tracing/treewide: Remove second parameter of __assign_str() 2024-05-22 20:14:47 -04:00
vdpa Merge tag 'stable/vduse-virtio-net' into vhost 2024-05-22 08:32:48 -04:00
vfio VFIO updates for v6.10-rc1 2024-05-20 14:56:50 -07:00
vhost virtio: features, fixes, cleanups 2024-05-23 12:04:36 -07:00
video - Fix-ups 2024-05-22 10:45:12 -07:00
virt The usual shower of singleton fixes and minor series all over MM, 2024-05-19 09:21:03 -07:00
virtio virtio: features, fixes, cleanups 2024-05-23 12:04:36 -07:00
w1
watchdog watchdog: LENOVO_SE10_WDT should depend on X86 && DMI 2024-05-11 11:32:06 +02:00
xen xen: branch for v6.10-rc1 2024-05-24 10:24:49 -07:00
zorro
Kconfig
Makefile kbuild: use $(src) instead of $(srctree)/$(src) for source directory 2024-05-10 04:34:52 +09:00