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Joerg Roedel bffe30dd9f x86/sev-es: Use __copy_from_user_inatomic() 
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: 5e3427a7bc432 ("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
2021-03-09 12:37:54 +01:00
..
.gitignore
.gitignore: add SPDX License Identifier
2020-03-25 11:50:48 +01:00
atomic64_32.c
…
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, libnvdimm/test: Remove COPY_MC_TEST
2020-10-26 18:08:35 +01:00
copy_mc.c
x86, libnvdimm/test: Remove COPY_MC_TEST
2020-10-26 18:08:35 +01:00
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()
2021-03-09 12:37:54 +01:00
insn.c
x86/insn: Fix vector instruction decoding on big endian cross-compiles
2021-01-13 18:13:17 -06:00
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
* Extend the recovery from MCE in kernel space also to processes which
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
2021-01-21 13:39:36 +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
smp: Cleanup smp_call_function*()
2020-11-24 16:47:49 +01:00
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
objtool: Combine UNWIND_HINT_RET_OFFSET and UNWIND_HINT_FUNC
2021-01-26 11:12:00 -06:00
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
* Extend the recovery from MCE in kernel space also to processes which
2020-10-12 10:14:38 -07:00
usercopy.c
x86/uaccess: Document copy_from_user_nmi()
2020-11-18 13:19:01 +01:00
x86-opcode-map.txt
x86/insn: Add Control-flow Enforcement (CET) instructions to the opcode map
2020-03-26 12:21:40 +01:00