Joerg Roedel a2bab396cb x86/sev-es: Use __copy_from_user_inatomic() ... commit bffe30dd9f1f3b2608a87ac909a224d6be472485 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
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.gitignore
atomic64_32.c
atomic64_386_32.S
atomic64_cx8_32.S
cache-smp.c
checksum_32.S
clear_page_64.S
cmdline.c
cmpxchg8b_emu.S
cmpxchg16b_emu.S
copy_mc_64.S
copy_mc.c
copy_page_64.S
copy_user_64.S
cpu.c
csum-copy_64.S
csum-partial_64.c
csum-wrappers_64.c
delay.c
error-inject.c
getuser.S
hweight.S
inat.c
insn-eval.c
insn.c
iomap_copy_64.S
iomem.c
kaslr.c
Makefile
memcpy_32.c
memcpy_64.S
memmove_64.S
memset_64.S
misc.c
mmx_32.c
msr-reg-export.c
msr-reg.S
msr-smp.c
msr.c
putuser.S
retpoline.S
string_32.c
strstr_32.c
usercopy_32.c
usercopy_64.c
usercopy.c
x86-opcode-map.txt