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Adrian Hunter 7cd34dd3c9 efi/unaccepted: do not let /proc/vmcore try to access unaccepted memory 
Patch series "Do not try to access unaccepted memory", v2.

Support for unaccepted memory was added recently, refer commit
dcdfdd40fa ("mm: Add support for unaccepted memory"), whereby
a virtual machine may need to accept memory before it can be used.

Plug a few gaps where RAM is exposed without checking if it is
unaccepted memory.


This patch (of 2):

Support for unaccepted memory was added recently, refer commit
dcdfdd40fa ("mm: Add support for unaccepted memory"), whereby a virtual
machine may need to accept memory before it can be used.

Do not let /proc/vmcore try to access unaccepted memory because it can
cause the guest to fail.

For /proc/vmcore, which is read-only, this means a read or mmap of
unaccepted memory will return zeros.

Link: https://lkml.kernel.org/r/20230911112114.91323-1-adrian.hunter@intel.com
Link: https://lkml.kernel.org/r/20230911112114.91323-2-adrian.hunter@intel.com
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Cc: Baoquan He <bhe@redhat.com>
Cc: Borislav Petkov (AMD) <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Lorenzo Stoakes <lstoakes@gmail.com>
Cc: Mike Rapoport <rppt@linux.ibm.com>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: Vivek Goyal <vgoyal@redhat.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-10-04 10:32:22 -07:00
..
arm_ffa
firmware: arm_ffa: Don't set the memory region attributes for MEM_LEND
2023-09-25 19:43:49 +01:00
arm_scmi
firmware: arm_scmi: Fixup perf power-cost/microwatt support
2023-09-11 10:34:05 +01:00
broadcom
MIPS: BCM47XX: remove MODULE_LICENSE in non-modules
2023-04-13 13:13:51 -07:00
cirrus
firmware: cirrus: cs_dsp: Only log list of algorithms in debug build
2023-09-13 18:50:32 +01:00
efi
efi/unaccepted: do not let /proc/vmcore try to access unaccepted memory
2023-10-04 10:32:22 -07:00
google
firmware: coreboot: framebuffer: Allow building with simpledrm
2023-08-04 16:31:32 +02:00
imx
firmware: imx-dsp: Fix an error handling path in imx_dsp_setup_channels()
2023-09-19 14:12:04 +02:00
meson
firmware: meson_sm: fix to avoid potential NULL pointer dereference
2023-08-04 15:19:01 +02:00
psci
firmware/psci: demote suspend-mode warning to info level
2023-04-14 13:48:56 +02:00
smccc
firmware: smccc: Fix use of uninitialised results structure
2023-07-18 10:08:05 +01:00
tegra
firmware: Explicitly include correct DT includes
2023-08-12 10:31:01 +02:00
xilinx
Merge tag 'pinctrl-v6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
2023-08-30 19:36:19 -07:00
arm_scpi.c
firmware: arm_scpi: Ensure scpi_info is not assigned if the probe fails
2022-07-04 14:28:42 +01:00
arm_sdei.c
arm64: sdei: abort running SDEI handlers during crash
2023-08-04 17:35:33 +01:00
dmi_scan.c
firmware: dmi: Fortify entry point length checks
2022-09-23 14:53:14 +02:00
dmi-id.c
driver core: make struct class.dev_uevent() take a const *
2022-11-24 17:12:15 +01:00
dmi-sysfs.c
firmware: dmi-sysfs: handle HAS_IOPORT=n
2023-05-31 19:17:29 +01:00
edd.c
edd: make kobj_type structure constant
2023-03-09 18:07:33 +01:00
iscsi_ibft_find.c
iscsi_ibft: Fix finding the iBFT under Xen Dom 0
2023-06-26 07:47:11 +02:00
iscsi_ibft.c
iscsi_ibft: Fix isa_bus_to_virt not working under ARM
2021-09-02 16:22:00 -04:00
Kconfig
Merge tag 'sound-5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
2022-05-25 16:55:16 -07:00
Makefile
Merge tag 'efi-next-for-v5.19-2' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi
2022-06-03 13:39:30 -07:00
memmap.c
firmware: memmap: use default_groups in kobj_type
2022-01-05 19:17:29 +01:00
mtk-adsp-ipc.c
firmware: Explicitly include correct DT includes
2023-08-12 10:31:01 +02:00
pcdp.c
…
pcdp.h
…
qcom_scm-legacy.c
firmware: qcom_scm: Move qcom_scm.h to include/linux/firmware/qcom/
2023-02-08 19:15:16 -08:00
qcom_scm-smc.c
firmware: qcom_scm: Move qcom_scm.h to include/linux/firmware/qcom/
2023-02-08 19:15:16 -08:00
qcom_scm.c
firmware: qcom_scm: Convert all symbols to EXPORT_SYMBOL_GPL
2023-07-27 20:29:06 -07:00
qcom_scm.h
firmware: qcom: scm: Add wait-queue handling logic
2023-01-18 21:14:40 -06:00
qemu_fw_cfg.c
firmware: qemu_fw_cfg: remove sysfs entries explicitly
2022-01-14 18:50:52 -05:00
raspberrypi.c
firmware: Explicitly include correct DT includes
2023-08-12 10:31:01 +02:00
scpi_pm_domain.c
firmware: Explicitly include correct DT includes
2023-08-12 10:31:01 +02:00
stratix10-rsu.c
Merge tag 'char-misc-6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
2023-09-01 09:53:54 -07:00
stratix10-svc.c
firmware: stratix10-svc: Generic Mailbox Command
2023-08-04 16:31:37 +02:00
sysfb_simplefb.c
firmware/sysfb: Fix VESA format selection
2023-04-21 14:27:31 +02:00
sysfb.c
drivers/firmware: Move sysfb_init() from device_initcall to subsys_initcall_sync
2023-05-15 13:36:30 +02:00
ti_sci.c
firmware: ti_sci: Fixup documentation errors
2023-07-11 13:04:14 -05:00
ti_sci.h
…
trusted_foundations.c
…
turris-mox-rwtm.c
firmware: turris-mox-rwtm: make kobj_type structure constant
2023-04-07 17:17:00 +02:00