Joerg Roedel a2bab396cb x86/sev-es: Use __copy_from_user_inatomic() ...

commit bffe30dd9f upstream.

The #VC handler must run in atomic context and cannot sleep. This is a
problem when it tries to fetch instruction bytes from user-space via
copy_from_user().

Introduce a insn_fetch_from_user_inatomic() helper which uses
__copy_from_user_inatomic() to safely copy the instruction bytes to
kernel memory in the #VC handler.

Fixes: 5e3427a7bc ("x86/sev-es: Handle instruction fetches from user-space")
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: stable@vger.kernel.org # v5.10+
Link: https://lkml.kernel.org/r/20210303141716.29223-6-joro@8bytes.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2021-03-17 17:06:36 +01:00

..

.gitignore

.gitignore: add SPDX License Identifier

2020-03-25 11:50:48 +01:00

atomic64_32.c

x86: Adjust asm constraints in atomic64 wrappers

2012-01-20 17:29:31 -08:00

atomic64_386_32.S

x86/asm/32: Change all ENTRY+ENDPROC to SYM_FUNC_*

2019-10-18 12:03:43 +02:00

atomic64_cx8_32.S

x86/asm/32: Change all ENTRY+ENDPROC to SYM_FUNC_*

2019-10-18 12:03:43 +02:00

cache-smp.c

smp: Remove smp_call_function() and on_each_cpu() return values

2019-06-23 14:26:26 +02:00

checksum_32.S

i386: propagate the calling conventions change down to csum_partial_copy_generic()

2020-08-20 15:45:18 -04:00

clear_page_64.S

x86/asm: Change all ENTRY+ENDPROC to SYM_FUNC_*

2019-10-18 11:58:33 +02:00

cmdline.c

treewide: Use fallthrough pseudo-keyword

2020-08-23 17:36:59 -05:00

cmpxchg8b_emu.S

x86/asm: Change all ENTRY+ENDPROC to SYM_FUNC_*

2019-10-18 11:58:33 +02:00

cmpxchg16b_emu.S

x86/asm: Change all ENTRY+ENDPROC to SYM_FUNC_*

2019-10-18 11:58:33 +02:00

copy_mc_64.S

x86/copy_mc: Introduce copy_mc_enhanced_fast_string()

2020-10-06 11:37:36 +02:00

copy_mc.c

x86/copy_mc: Introduce copy_mc_enhanced_fast_string()

2020-10-06 11:37:36 +02:00

copy_page_64.S

x86/asm: Change all ENTRY+ENDPROC to SYM_FUNC_*

2019-10-18 11:58:33 +02:00

copy_user_64.S

x86/mce: Avoid tail copy when machine check terminated a copy from user

2020-10-07 11:26:56 +02:00

cpu.c

x86/lib/cpu: Address missing prototypes warning

2019-08-08 08:25:53 +02:00

csum-copy_64.S

amd64: switch csum_partial_copy_generic() to new calling conventions

2020-08-20 15:45:22 -04:00

csum-partial_64.c

x86/lib: Fix indentation issue, remove extra tab

2019-03-21 12:24:38 +01:00

csum-wrappers_64.c

amd64: switch csum_partial_copy_generic() to new calling conventions

2020-08-20 15:45:22 -04:00

delay.c

x86/delay: Introduce TPAUSE delay

2020-05-07 16:06:20 +02:00

error-inject.c

x86/asm: Mark all top level asm statements as .text

2019-04-19 17:46:55 +02:00

getuser.S

Merge branch 'work.set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2020-10-22 09:59:21 -07:00

hweight.S

x86/asm: Change all ENTRY+ENDPROC to SYM_FUNC_*

2019-10-18 11:58:33 +02:00

inat.c

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156

2019-05-30 11:26:35 -07:00

insn-eval.c

x86/sev-es: Use __copy_from_user_inatomic()

2021-03-17 17:06:36 +01:00

insn.c

x86: xen: insn: Decode Xen and KVM emulate-prefix signature

2019-10-17 21:31:57 +02:00

iomap_copy_64.S

x86/asm: Change all ENTRY+ENDPROC to SYM_FUNC_*

2019-10-18 11:58:33 +02:00

iomem.c

x86: explicitly align IO accesses in memcpy_{to,from}io

2019-02-01 09:07:48 -08:00

kaslr.c

x86/kaslr: Fix incorrect i8254 outb() parameters

2019-01-11 21:35:47 +01:00

Makefile

Merge tag 'ras_updates_for_v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2020-10-12 10:14:38 -07:00

memcpy_32.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

memcpy_64.S

x86/lib: Change .weak to SYM_FUNC_START_WEAK for arch/x86/lib/mem*_64.S

2020-11-04 12:30:20 +01:00

memmove_64.S

x86/lib: Change .weak to SYM_FUNC_START_WEAK for arch/x86/lib/mem*_64.S

2020-11-04 12:30:20 +01:00

memset_64.S

x86/lib: Change .weak to SYM_FUNC_START_WEAK for arch/x86/lib/mem*_64.S

2020-11-04 12:30:20 +01:00

misc.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

mmx_32.c

x86/mmx: Use KFPU_387 for MMX string operations

2021-01-27 11:55:13 +01:00

msr-reg-export.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

msr-reg.S

x86/asm: Change all ENTRY+ENDPROC to SYM_FUNC_*

2019-10-18 11:58:33 +02:00

msr-smp.c

x86/msr: Make rdmsrl_safe_on_cpu() scheduling safe as well

2018-03-28 10:34:13 +02:00

msr.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

putuser.S

Merge branch 'work.set_fs' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2020-10-22 09:59:21 -07:00

retpoline.S

x86/retpoline: Fix retpoline unwind

2020-04-30 20:14:34 +02:00

string_32.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

strstr_32.c

License cleanup: add SPDX GPL-2.0 license identifier to files with no license

2017-11-02 11:10:55 +01:00

usercopy_32.c

docs/core-api/mm: fix user memory accessors formatting

2019-03-05 21:07:20 -08:00

usercopy_64.c

Merge tag 'ras_updates_for_v5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

2020-10-12 10:14:38 -07:00

usercopy.c

x86/nmi: Fix NMI uaccess race against CR3 switching

2018-08-31 17:08:22 +02:00

x86-opcode-map.txt

x86/insn: Add Control-flow Enforcement (CET) instructions to the opcode map

2020-03-26 12:21:40 +01:00