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| author | Peter Maydell | 2021-01-06 16:55:29 +0100 |
|---|---|---|
| committer | Peter Maydell | 2021-01-06 16:55:29 +0100 |
| commit | aadac5b3d9fdce28030495f80fc76a4336e97328 (patch) | |
| tree | 4ddddf4811bb9e9bb8aecdba57f6bf3730e3a790 /util/oslib-posix.c | |
| parent | Merge remote-tracking branch 'remotes/mcayland/tags/qemu-sparc-20210106' into... (diff) | |
| parent | win32: drop fd registration to the main-loop on setting non-block (diff) | |
| download | qemu-aadac5b3d9fdce28030495f80fc76a4336e97328.tar.gz qemu-aadac5b3d9fdce28030495f80fc76a4336e97328.tar.xz qemu-aadac5b3d9fdce28030495f80fc76a4336e97328.zip | |
Merge remote-tracking branch 'remotes/bonzini-gitlab/tags/for-upstream' into staging
From Alex's pull request:
* improve cross-build KVM coverage
* new --without-default-features configure flag
* add __repr__ for ConsoleSocket for debugging
* build tcg tests with -Werror
* test 32 bit builds with fedora
* remove last traces of debian9
* hotfix for centos8 powertools repo
* Move lots of feature detection code to meson (Alex, myself)
* CFI and LTO support (Daniele)
* test-char dangling pointer (Eduardo)
* Build system and win32 fixes (Marc-André)
* Initialization fixes (myself)
* TCG include cleanup (Richard, myself)
* x86 'int N' fix (Peter)
# gpg: Signature made Wed 06 Jan 2021 09:21:25 GMT
# gpg: using RSA key F13338574B662389866C7682BFFBD25F78C7AE83
# gpg: issuer "pbonzini@redhat.com"
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>" [full]
# gpg: aka "Paolo Bonzini <pbonzini@redhat.com>" [full]
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4 E2F7 7E15 100C CD36 69B1
# Subkey fingerprint: F133 3857 4B66 2389 866C 7682 BFFB D25F 78C7 AE83
* remotes/bonzini-gitlab/tags/for-upstream: (52 commits)
win32: drop fd registration to the main-loop on setting non-block
configure: move tests/qemu-iotests/common.env generation to meson
meson.build: convert --with-default-devices to meson
libattr: convert to meson
cap_ng: convert to meson
virtfs: convert to meson
seccomp: convert to meson
zstd: convert to meson
lzfse: convert to meson
snappy: convert to meson
lzo: convert to meson
rbd: convert to meson
libnfs: convert to meson
libiscsi: convert to meson
bzip2: convert to meson
glusterfs: convert to meson
curl: convert to meson
curl: remove compatibility code, require 7.29.0
brlapi: convert to meson
configure: remove CONFIG_FILEVERSION and CONFIG_PRODUCTVERSION
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
# Conflicts:
# trace/meson.build
Diffstat (limited to 'util/oslib-posix.c')
| -rw-r--r-- | util/oslib-posix.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/util/oslib-posix.c b/util/oslib-posix.c index f15234b5c0..f1e2801b11 100644 --- a/util/oslib-posix.c +++ b/util/oslib-posix.c @@ -39,6 +39,7 @@ #include "qemu/thread.h" #include <libgen.h> #include "qemu/cutils.h" +#include "qemu/compiler.h" #ifdef CONFIG_LINUX #include <sys/syscall.h> @@ -773,6 +774,16 @@ void qemu_free_stack(void *stack, size_t sz) munmap(stack, sz); } +/* + * Disable CFI checks. + * We are going to call a signal hander directly. Such handler may or may not + * have been defined in our binary, so there's no guarantee that the pointer + * used to set the handler is a cfi-valid pointer. Since the handlers are + * stored in kernel memory, changing the handler to an attacker-defined + * function requires being able to call a sigaction() syscall, + * which is not as easy as overwriting a pointer in memory. + */ +QEMU_DISABLE_CFI void sigaction_invoke(struct sigaction *action, struct qemu_signalfd_siginfo *info) { |