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In the physical machine environment, when a SRAR error occurs,
the IA32_MCG_STATUS RIPV bit is set, but qemu does not set this
bit. When qemu injects an SRAR error into virtual machine, the
virtual machine kernel just call do_machine_check() to kill the
current task, but not call memory_failure() to isolate the faulty
page, which will cause the faulty page to be allocated and used
repeatedly. If used by the virtual machine kernel, it will cause
the virtual machine to crash
Signed-off-by: luofei <luofei@unicloud.com>
Message-Id: <20220120084634.131450-1-luofei@unicloud.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Fix vCPU hot-unplug related leak reported by Valgrind:
==132362== 4,096 bytes in 1 blocks are definitely lost in loss record 8,440 of 8,549
==132362== at 0x4C3B15F: memalign (vg_replace_malloc.c:1265)
==132362== by 0x4C3B288: posix_memalign (vg_replace_malloc.c:1429)
==132362== by 0xB41195: qemu_try_memalign (memalign.c:53)
==132362== by 0xB41204: qemu_memalign (memalign.c:73)
==132362== by 0x7131CB: kvm_init_xsave (kvm.c:1601)
==132362== by 0x7148ED: kvm_arch_init_vcpu (kvm.c:2031)
==132362== by 0x91D224: kvm_init_vcpu (kvm-all.c:516)
==132362== by 0x9242C9: kvm_vcpu_thread_fn (kvm-accel-ops.c:40)
==132362== by 0xB2EB26: qemu_thread_start (qemu-thread-posix.c:556)
==132362== by 0x7EB2159: start_thread (in /usr/lib64/libpthread-2.28.so)
==132362== by 0x9D45DD2: clone (in /usr/lib64/libc-2.28.so)
Reported-by: Mark Kanda <mark.kanda@oracle.com>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Mark Kanda <mark.kanda@oracle.com>
Message-Id: <20220322120522.26200-1-philippe.mathieu.daude@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Pull request
Philippe found cases where the 0x%d format string was used, leading to
misleading output. The patches look harmless and could save people time, so I
think it's worth including them in 7.0.
# gpg: Signature made Thu 24 Mar 2022 17:15:20 GMT
# gpg: using RSA key 8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [full]
# gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>" [full]
# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35 775A 9CA4 ABB3 81AB 73C8
* tag 'block-pull-request' of https://gitlab.com/stefanha/qemu:
hw: Fix misleading hexadecimal format
block: Fix misleading hexadecimal format
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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"0x%u" format is very misleading, replace by "0x%x".
Found running:
$ git grep -E '0x%[0-9]*([lL]*|" ?PRI)[dDuU]' hw/
Inspired-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-id: 20220323114718.58714-3-philippe.mathieu.daude@gmail.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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"0x%u" format is very misleading, replace by "0x%x".
Found running:
$ git grep -E '0x%[0-9]*([lL]*|" ?PRI)[dDuU]' block/
Inspired-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Hanna Reitz <hreitz@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Denis V. Lunev <den@openvz.org>
Message-id: 20220323114718.58714-2-philippe.mathieu.daude@gmail.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
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https://gitlab.com/laurent_vivier/qemu into staging
linux-user pull request 20220324
Fix MIPS n32
Fix ppoll, epoll_wait, pselect
Fix error message in elfload.c
Implement ARM __kernel_memory_barrier/__kernel_cmpxchg/__kernel_cmpxchg64
# gpg: Signature made Thu 24 Mar 2022 08:19:57 GMT
# gpg: using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg: issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg: aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C
* tag 'linux-user-for-7.0-pull-request' of https://gitlab.com/laurent_vivier/qemu:
linux-user/arm: Implement __kernel_cmpxchg64 with host atomics
linux-user/arm: Implement __kernel_cmpxchg with host atomics
linux-user/arm: Implement __kernel_memory_barrier
linux-user: Fix missing space in error message
linux-user: Properly handle sigset arg to ppoll
linux-user: Properly handle sigset arg to epoll_pwait
linux-user: Properly handle sigset arg to pselect
linux-user: Split out helpers for sigsuspend
linux-user/alpha: Fix sigsuspend for big-endian hosts
linux-user: Fix syscall parameter handling for MIPS n32
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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If CONFIG_ATOMIC64, we can use a host cmpxchg and provide
atomicity across processes; otherwise we have no choice but
to continue using start/end_exclusive.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220323005839.94327-4-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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The existing implementation using start/end_exclusive
does not provide atomicity across processes.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220323005839.94327-3-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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This fallback syscall was stubbed out.
It would only matter for emulating pre-armv6.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220323005839.94327-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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Signed-off-by: Fergus Henderson <fergus@google.com>
Signed-off-by: Patrick Venture <venture@google.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220310192148.1696486-1-venture@google.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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Unblocked signals are never delivered, because we
didn't record the new mask for process_pending_signals.
Handle this with the same mechanism as sigsuspend.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220315084308.433109-6-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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Unblocked signals are never delivered, because we
didn't record the new mask for process_pending_signals.
Handle this with the same mechanism as sigsuspend.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220315084308.433109-5-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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Unblocked signals are never delivered, because we
didn't record the new mask for process_pending_signals.
Handle this with the same mechanism as sigsuspend.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/834
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220315084308.433109-4-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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Two new functions: process_sigsuspend_mask and finish_sigsuspend_mask.
Move the size check and copy-from-user code.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220315084308.433109-3-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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On alpha, the sigset argument for sigsuspend is in a register.
When we drop that into memory that happens in host-endianness,
but target_to_host_old_sigset will treat it as target-endianness.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20220315084308.433109-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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The MIPS n32 ABI is basically n64 with the address space (i.e. pointer
width) shrinked to 32 bits. Meanwhile the current code treats it as
o32-like based on TARGET_ABI_BITS, which causes problems with n32
syscalls utilizing 64-bit offsets, like pread64, affecting most (if not
all) recently built n32 binaries.
This partially solves issue #909 ("qemu-mipsn32(el) user mode emulator
fails to execute any recently built n32 binaries"); with this change
applied, the built qemu-mipsn32el is able to progress beyond the
pread64, and finish _dl_start_user for the "getting ld.so load libc.so"
case. The program later dies with SIGBUS, though, due to _dl_start_user
not maintaining stack alignment after removing ld.so itself from argv,
and qemu-user starting to enforce alignment recently, but that is
orthogonal to the issue here; the more common case of chrooting is
working, verified with my own-built Gentoo n32 sysroot. (Depending on
the exact ISA used, one may have to explicitly specify QEMU_CPU, which
is the case for my chroot.)
Buglink: https://gitlab.com/qemu-project/qemu/-/issues/909
Signed-off-by: WANG Xuerui <xen0n@gentoo.org>
Cc: Laurent Vivier <laurent@vivier.eu>
Cc: Philippe Mathieu-Daudé <f4bug@amsat.org>
Cc: Jiaxun Yang <jiaxun.yang@flygoat.com>
Cc: Andreas K. Hüttel <dilfridge@gentoo.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220320052259.1610883-1-xen0n@gentoo.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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into staging
Various fixes for 7.0
- make clean also cleans tcg tests
- fix rounding error in i386 fildl[l]
- more clean-ups to gitdm/mailmap metadata
- apply some organisation to docs/devel
- clean-up semihosting argv handling
- add custom runner for aarch32
- remove old qemu_logo.pdf
- document QEMU_PLUGIN env var
# gpg: Signature made Wed 23 Mar 2022 10:41:03 GMT
# gpg: using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8 DF35 FBD0 DB09 5A9E 2A44
* tag 'pull-fixes-for-7.0-230322-1' of https://github.com/stsquad/qemu:
docs/tcg-plugins: document QEMU_PLUGIN behaviour
docs: remove qemu_logo.pdf
gitlab: include new aarch32 job in custom-runners
semihosting: clean up handling of expanded argv
docs/devel: try and impose some organisation
mailmap/gitdm: more fixes for bad tags and authors
target/i386: force maximum rounding precision for fildl[l]
tests/Makefile.include: Let "make clean" remove the TCG tests, too
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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QEMU plugins can be loaded via command line arguments or via
the QEMU_PLUGIN environment variable. Currently, only the first method
is documented. Let's document QEMU_PLUGIN.
As drive-by cleanup, this patch fixes the path to the plugins
in the same section of the documentation.
Signed-off-by: Christoph Muellner <cmuellner@linux.com>
Message-Id: <20220316181412.1550044-1-cmuellner@linux.com>
[AJB: fixed some minor typos]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
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As far as I can tell nothing in the source tree uses this file. The
original comment mentions texi2pdf and I think that was all culled
when we switched to our rst documentation pipeline.
Fixes: 4ac2ee194b ("docs/interop: Convert qemu-qmp-ref to rST")
Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220316161038.3033723-1-alex.bennee@linaro.org>
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Without linking it in it won't be presented on the UI. Also while
doing that fix the misnamed job from 20.40 to 20.04.
Fixes: cc44a16002 ("gitlab: add a new aarch32 custom runner definition")
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220315121954.2283887-1-alex.bennee@linaro.org>
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Another cleanup patch tripped over the fact we weren't being careful
in our casting. Fix the casts, allow for a non-const and switch from
g_realloc to g_renew.
The whole semihosting argument handling could do with some tests
though.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20220315121251.2280317-8-alex.bennee@linaro.org>
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We have a growing set of developer docs but the index is currently in
order of when stuff was added. Try and make things a bit easier to
find my adding sub indexes and organising into themes.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Kashyap Chamarthy <kchamart@redhat.com>
Message-Id: <20220315121251.2280317-7-alex.bennee@linaro.org>
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I was running some historical tags for the last 10 years and got the
following warnings:
git log --use-mailmap --numstat --since "June 2010" | ~/src/gitdm.git/gitdm -n -l 5
alarson@ddci.com is an author name, probably not what you want
bad utf-8 ('utf-8' codec can't decode byte 0xe4 in position 552: invalid continuation byte) in patchm skipping
bad utf-8 ('utf-8' codec can't decode byte 0xe4 in position 342: invalid continuation byte) in patchm skipping
michael@ozlabs.org is an author name, probably not what you want
Oops...funky email nicta.com.au
bad utf-8 ('utf-8' codec can't decode byte 0xe9 in position 232: invalid continuation byte) in patchm skipping
Oops...funky email andreas.faerber
Grabbing changesets...done
Processed 76422 csets from 1902 developers
The following fixes try and alleviate that although I still get a
warning for Aaron which I think is from 9743cd5736.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20220315121251.2280317-6-alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Acked-by: Aaron Larson <alarson@ddci.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Cc: Andreas Färber <andreas.faerber@web.de>
Cc: Jason Wang <jasowang@redhat.com>
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The instruction description says "It is loaded without rounding
errors." which implies we should have the widest rounding mode
possible.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/888
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220315121251.2280317-4-alex.bennee@linaro.org>
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"make clean" should clear all binaries that have been built, but so
far it left the TCG tests still in place. Let's make sure that they
are now removed, too.
Signed-off-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220301085900.1443232-1-thuth@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
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Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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staging
* Fix stack-overflow due to recursive DMA in intel-hda (CVE-2021-3611)
* Fix heap overflow due to recursive DMA in sdhci code
# gpg: Signature made Mon 21 Mar 2022 16:14:36 GMT
# gpg: using RSA key 27B88847EEE0250118F3EAB92ED9D774FE702DB5
# gpg: issuer "thuth@redhat.com"
# gpg: Good signature from "Thomas Huth <th.huth@gmx.de>" [full]
# gpg: aka "Thomas Huth <thuth@redhat.com>" [full]
# gpg: aka "Thomas Huth <huth@tuxfamily.org>" [full]
# gpg: aka "Thomas Huth <th.huth@posteo.de>" [unknown]
# Primary key fingerprint: 27B8 8847 EEE0 2501 18F3 EAB9 2ED9 D774 FE70 2DB5
* tag 'pull-request-2022-03-21' of https://gitlab.com/thuth/qemu:
tests/qtest/fuzz-sdcard-test: Add reproducer for OSS-Fuzz (Issue 29225)
hw/sd/sdhci: Prohibit DMA accesses to devices
hw/sd/sdhci: Honor failed DMA transactions
tests/qtest/intel-hda-test: Add reproducer for issue #542
hw/audio/intel-hda: Restrict DMA engine to memories (not MMIO devices)
hw/audio/intel-hda: Do not ignore DMA overrun errors
softmmu/physmem: Introduce MemTxAttrs::memory field and MEMTX_ACCESS_ERROR
softmmu/physmem: Simplify flatview_write and address_space_access_valid
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Include the qtest reproducer provided by Alexander Bulekov
in https://gitlab.com/qemu-project/qemu/-/issues/451. Without
the previous commit, we get:
$ make check-qtest-i386
...
Running test qtest-i386/fuzz-sdcard-test
==447470==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x61500002a080 at pc 0x564c71766d48 bp 0x7ffc126c62b0 sp 0x7ffc126c62a8
READ of size 1 at 0x61500002a080 thread T0
#0 0x564c71766d47 in sdhci_read_dataport hw/sd/sdhci.c:474:18
#1 0x564c7175f139 in sdhci_read hw/sd/sdhci.c:1022:19
#2 0x564c721b937b in memory_region_read_accessor softmmu/memory.c:440:11
#3 0x564c72171e51 in access_with_adjusted_size softmmu/memory.c:554:18
#4 0x564c7216f47c in memory_region_dispatch_read1 softmmu/memory.c:1424:16
#5 0x564c7216ebb9 in memory_region_dispatch_read softmmu/memory.c:1452:9
#6 0x564c7212db5d in flatview_read_continue softmmu/physmem.c:2879:23
#7 0x564c7212f958 in flatview_read softmmu/physmem.c:2921:12
#8 0x564c7212f418 in address_space_read_full softmmu/physmem.c:2934:18
#9 0x564c721305a9 in address_space_rw softmmu/physmem.c:2962:16
#10 0x564c7175a392 in dma_memory_rw_relaxed include/sysemu/dma.h:89:12
#11 0x564c7175a0ea in dma_memory_rw include/sysemu/dma.h:132:12
#12 0x564c71759684 in dma_memory_read include/sysemu/dma.h:152:12
#13 0x564c7175518c in sdhci_do_adma hw/sd/sdhci.c:823:27
#14 0x564c7174bf69 in sdhci_data_transfer hw/sd/sdhci.c:935:13
#15 0x564c7176aaa7 in sdhci_send_command hw/sd/sdhci.c:376:9
#16 0x564c717629ee in sdhci_write hw/sd/sdhci.c:1212:9
#17 0x564c72172513 in memory_region_write_accessor softmmu/memory.c:492:5
#18 0x564c72171e51 in access_with_adjusted_size softmmu/memory.c:554:18
#19 0x564c72170766 in memory_region_dispatch_write softmmu/memory.c:1504:16
#20 0x564c721419ee in flatview_write_continue softmmu/physmem.c:2812:23
#21 0x564c721301eb in flatview_write softmmu/physmem.c:2854:12
#22 0x564c7212fca8 in address_space_write softmmu/physmem.c:2950:18
#23 0x564c721d9a53 in qtest_process_command softmmu/qtest.c:727:9
0x61500002a080 is located 0 bytes to the right of 512-byte region [0x615000029e80,0x61500002a080)
allocated by thread T0 here:
#0 0x564c708e1737 in __interceptor_calloc (qemu-system-i386+0x1e6a737)
#1 0x7ff05567b5e0 in g_malloc0 (/lib64/libglib-2.0.so.0+0x5a5e0)
#2 0x564c71774adb in sdhci_pci_realize hw/sd/sdhci-pci.c:36:5
SUMMARY: AddressSanitizer: heap-buffer-overflow hw/sd/sdhci.c:474:18 in sdhci_read_dataport
Shadow bytes around the buggy address:
0x0c2a7fffd3c0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c2a7fffd3d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c2a7fffd3e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c2a7fffd3f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
0x0c2a7fffd400: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
=>0x0c2a7fffd410:[fa]fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
0x0c2a7fffd420: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c2a7fffd430: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c2a7fffd440: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c2a7fffd450: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
0x0c2a7fffd460: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
Shadow byte legend (one shadow byte represents 8 application bytes):
Addressable: 00
Heap left redzone: fa
Freed heap region: fd
==447470==ABORTING
Broken pipe
ERROR qtest-i386/fuzz-sdcard-test - too few tests run (expected 3, got 2)
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20211215205656.488940-4-philmd@redhat.com>
[thuth: Replaced "-m 4G" with "-m 512M"]
Signed-off-by: Thomas Huth <thuth@redhat.com>
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The issue reported by OSS-Fuzz produces the following backtrace:
==447470==ERROR: AddressSanitizer: heap-buffer-overflow
READ of size 1 at 0x61500002a080 thread T0
#0 0x71766d47 in sdhci_read_dataport hw/sd/sdhci.c:474:18
#1 0x7175f139 in sdhci_read hw/sd/sdhci.c:1022:19
#2 0x721b937b in memory_region_read_accessor softmmu/memory.c:440:11
#3 0x72171e51 in access_with_adjusted_size softmmu/memory.c:554:18
#4 0x7216f47c in memory_region_dispatch_read1 softmmu/memory.c:1424:16
#5 0x7216ebb9 in memory_region_dispatch_read softmmu/memory.c:1452:9
#6 0x7212db5d in flatview_read_continue softmmu/physmem.c:2879:23
#7 0x7212f958 in flatview_read softmmu/physmem.c:2921:12
#8 0x7212f418 in address_space_read_full softmmu/physmem.c:2934:18
#9 0x721305a9 in address_space_rw softmmu/physmem.c:2962:16
#10 0x7175a392 in dma_memory_rw_relaxed include/sysemu/dma.h:89:12
#11 0x7175a0ea in dma_memory_rw include/sysemu/dma.h:132:12
#12 0x71759684 in dma_memory_read include/sysemu/dma.h:152:12
#13 0x7175518c in sdhci_do_adma hw/sd/sdhci.c:823:27
#14 0x7174bf69 in sdhci_data_transfer hw/sd/sdhci.c:935:13
#15 0x7176aaa7 in sdhci_send_command hw/sd/sdhci.c:376:9
#16 0x717629ee in sdhci_write hw/sd/sdhci.c:1212:9
#17 0x72172513 in memory_region_write_accessor softmmu/memory.c:492:5
#18 0x72171e51 in access_with_adjusted_size softmmu/memory.c:554:18
#19 0x72170766 in memory_region_dispatch_write softmmu/memory.c:1504:16
#20 0x721419ee in flatview_write_continue softmmu/physmem.c:2812:23
#21 0x721301eb in flatview_write softmmu/physmem.c:2854:12
#22 0x7212fca8 in address_space_write softmmu/physmem.c:2950:18
#23 0x721d9a53 in qtest_process_command softmmu/qtest.c:727:9
A DMA descriptor is previously filled in RAM. An I/O access to the
device (frames #22 to #16) start the DMA engine (frame #13). The
engine fetch the descriptor and execute the request, which itself
accesses the SDHCI I/O registers (frame #1 and #0), triggering a
re-entrancy issue.
Fix by prohibit transactions from the DMA to devices. The DMA engine
is thus restricted to memories.
Reported-by: OSS-Fuzz (Issue 36391)
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/451
Message-Id: <20211215205656.488940-3-philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
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DMA transactions might fail. The DMA API returns a MemTxResult,
indicating such failures. Do not ignore it. On failure, raise
the ADMA error flag and eventually triggering an IRQ (see spec
chapter 1.13.5: "ADMA2 States").
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20211215205656.488940-2-philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
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Include the qtest reproducer provided by Alexander Bulekov
in https://gitlab.com/qemu-project/qemu/-/issues/542.
Without the previous commit, we get:
$ make check-qtest-i386
...
Running test tests/qtest/intel-hda-test
AddressSanitizer:DEADLYSIGNAL
=================================================================
==1580408==ERROR: AddressSanitizer: stack-overflow on address 0x7ffc3d566fe0
#0 0x63d297cf in address_space_translate_internal softmmu/physmem.c:356
#1 0x63d27260 in flatview_do_translate softmmu/physmem.c:499:15
#2 0x63d27af5 in flatview_translate softmmu/physmem.c:565:15
#3 0x63d4ce84 in flatview_write softmmu/physmem.c:2850:10
#4 0x63d4cb18 in address_space_write softmmu/physmem.c:2950:18
#5 0x63d4d387 in address_space_rw softmmu/physmem.c:2960:16
#6 0x62ae12f2 in dma_memory_rw_relaxed include/sysemu/dma.h:89:12
#7 0x62ae104a in dma_memory_rw include/sysemu/dma.h:132:12
#8 0x62ae6157 in dma_memory_write include/sysemu/dma.h:173:12
#9 0x62ae5ec0 in stl_le_dma include/sysemu/dma.h:275:1
#10 0x62ae5ba2 in stl_le_pci_dma include/hw/pci/pci.h:871:1
#11 0x62ad59a6 in intel_hda_response hw/audio/intel-hda.c:372:12
#12 0x62ad2afb in hda_codec_response hw/audio/intel-hda.c:107:5
#13 0x62aec4e1 in hda_audio_command hw/audio/hda-codec.c:655:5
#14 0x62ae05d9 in intel_hda_send_command hw/audio/intel-hda.c:307:5
#15 0x62adff54 in intel_hda_corb_run hw/audio/intel-hda.c:342:9
#16 0x62adc13b in intel_hda_set_corb_wp hw/audio/intel-hda.c:548:5
#17 0x62ae5942 in intel_hda_reg_write hw/audio/intel-hda.c:977:9
#18 0x62ada10a in intel_hda_mmio_write hw/audio/intel-hda.c:1054:5
#19 0x63d8f383 in memory_region_write_accessor softmmu/memory.c:492:5
#20 0x63d8ecc1 in access_with_adjusted_size softmmu/memory.c:554:18
#21 0x63d8d5d6 in memory_region_dispatch_write softmmu/memory.c:1504:16
#22 0x63d5e85e in flatview_write_continue softmmu/physmem.c:2812:23
#23 0x63d4d05b in flatview_write softmmu/physmem.c:2854:12
#24 0x63d4cb18 in address_space_write softmmu/physmem.c:2950:18
#25 0x63d4d387 in address_space_rw softmmu/physmem.c:2960:16
#26 0x62ae12f2 in dma_memory_rw_relaxed include/sysemu/dma.h:89:12
#27 0x62ae104a in dma_memory_rw include/sysemu/dma.h:132:12
#28 0x62ae6157 in dma_memory_write include/sysemu/dma.h:173:12
#29 0x62ae5ec0 in stl_le_dma include/sysemu/dma.h:275:1
#30 0x62ae5ba2 in stl_le_pci_dma include/hw/pci/pci.h:871:1
#31 0x62ad59a6 in intel_hda_response hw/audio/intel-hda.c:372:12
#32 0x62ad2afb in hda_codec_response hw/audio/intel-hda.c:107:5
#33 0x62aec4e1 in hda_audio_command hw/audio/hda-codec.c:655:5
#34 0x62ae05d9 in intel_hda_send_command hw/audio/intel-hda.c:307:5
#35 0x62adff54 in intel_hda_corb_run hw/audio/intel-hda.c:342:9
#36 0x62adc13b in intel_hda_set_corb_wp hw/audio/intel-hda.c:548:5
#37 0x62ae5942 in intel_hda_reg_write hw/audio/intel-hda.c:977:9
#38 0x62ada10a in intel_hda_mmio_write hw/audio/intel-hda.c:1054:5
#39 0x63d8f383 in memory_region_write_accessor softmmu/memory.c:492:5
#40 0x63d8ecc1 in access_with_adjusted_size softmmu/memory.c:554:18
#41 0x63d8d5d6 in memory_region_dispatch_write softmmu/memory.c:1504:16
#42 0x63d5e85e in flatview_write_continue softmmu/physmem.c:2812:23
#43 0x63d4d05b in flatview_write softmmu/physmem.c:2854:12
#44 0x63d4cb18 in address_space_write softmmu/physmem.c:2950:18
#45 0x63d4d387 in address_space_rw softmmu/physmem.c:2960:16
#46 0x62ae12f2 in dma_memory_rw_relaxed include/sysemu/dma.h:89:12
#47 0x62ae104a in dma_memory_rw include/sysemu/dma.h:132:12
#48 0x62ae6157 in dma_memory_write include/sysemu/dma.h:173:12
...
SUMMARY: AddressSanitizer: stack-overflow softmmu/physmem.c:356 in address_space_translate_internal
==1580408==ABORTING
Broken pipe
Aborted (core dumped)
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Acked-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20211218160912.1591633-4-philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
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Issue #542 reports a reentrancy problem when the DMA engine accesses
the HDA controller I/O registers. Fix by restricting the DMA engine
to memories regions (forbidding MMIO devices such the HDA controller).
Reported-by: OSS-Fuzz (Issue 28435)
Reported-by: Alexander Bulekov <alxndr@bu.edu>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/542
CVE: CVE-2021-3611
Message-Id: <20211218160912.1591633-3-philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
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Per the "High Definition Audio Specification" manual (rev. 1.0a),
section "3.3.30 Offset 5Dh: RIRBSTS - RIRB Status":
Response Overrun Interrupt Status (RIRBOIS):
Hardware sets this bit to a 1 when an overrun occurs in the RIRB.
An interrupt may be generated if the Response Overrun Interrupt
Control bit is set.
This bit will be set if the RIRB DMA engine is not able to write
the incoming responses to memory before additional incoming
responses overrun the internal FIFO.
When hardware detects an overrun, it will drop the responses which
overrun the buffer and set the RIRBOIS status bit to indicate the
error condition. Optionally, if the RIRBOIC is set, the hardware
will also generate an error to alert software to the problem.
QEMU emulates the DMA engine with the stl_le_pci_dma() calls. This
function returns a MemTxResult indicating whether the DMA access
was successful.
Handle any MemTxResult error as "DMA engine is not able to write the
incoming responses to memory" and raise the Overrun Interrupt flag
when this case occurs.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211218160912.1591633-2-philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
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Add the 'memory' bit to the memory attributes to restrict bus
controller accesses to memories.
Introduce flatview_access_allowed() to check bus permission
before running any bus transaction.
Have read/write accessors return MEMTX_ACCESS_ERROR if an access is
restricted.
There is no change for the default case where 'memory' is not set.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211215182421.418374-4-philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
[thuth: Replaced MEMTX_BUS_ERROR with MEMTX_ACCESS_ERROR, remove "inline"]
Signed-off-by: Thomas Huth <thuth@redhat.com>
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Remove unuseful local 'result' variables.
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Alexander Bulekov <alxndr@bu.edu>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20211215182421.418374-3-philmd@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
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Fixes and cleanups for 7.0
Hi,
A collection of fixes & cleanup patches that should be safe for 7.0 inclusion.
# gpg: Signature made Tue 22 Mar 2022 12:11:30 GMT
# gpg: using RSA key 87A9BD933F87C606D276F62DDAE8E10975969CE5
# gpg: issuer "marcandre.lureau@redhat.com"
# gpg: Good signature from "Marc-André Lureau <marcandre.lureau@redhat.com>" [full]
# gpg: aka "Marc-André Lureau <marcandre.lureau@gmail.com>" [full]
# Primary key fingerprint: 87A9 BD93 3F87 C606 D276 F62D DAE8 E109 7596 9CE5
* tag 'fixes-pull-request' of gitlab.com:marcandre.lureau/qemu: (21 commits)
qapi: remove needless include
Remove trailing ; after G_DEFINE_AUTO macro
tests: remove needless include
error: use GLib to remember the program name
qga: remove bswap.h include
qapi: remove needless include
meson: fix CONFIG_ATOMIC128 check
meson: move int128 checks from configure
qapi: remove needless include
util: remove the net/net.h dependency
util: remove needless includes
scripts/modinfo-collect: remove unused/dead code
Move HOST_LONG_BITS to compiler.h
Simplify HOST_LONG_BITS
compiler.h: replace QEMU_SENTINEL with G_GNUC_NULL_TERMINATED
compiler.h: replace QEMU_WARN_UNUSED_RESULT with G_GNUC_WARN_UNUSED_RESULT
Replace GCC_FMT_ATTR with G_GNUC_PRINTF
Drop qemu_foo() socket API wrapper
m68k/nios2-semi: fix gettimeofday() result check
vl: typo fix in a comment
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
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The macro doesn't need it.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
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Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
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Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
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Apparently not needed anymore.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
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Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
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The current testing code isn't correct and matching QEMU usage:
testfile.c: In function 'main':
testfile.c:5:11: error: incorrect number of arguments to function '__atomic_load'
5 | y = __atomic_load(&x, 0);
| ^~~~~~~~~~~~~
testfile.c:6:7: error: argument 2 of '__atomic_store' must be a pointer type
6 | __atomic_store(&x, y, 0);
| ^~~~~~~~~~~~~~
testfile.c:7:7: error: argument 3 of '__atomic_compare_exchange' must be a pointer type
7 | __atomic_compare_exchange(&x, &y, x, 0, 0, 0);
| ^~~~~~~~~~~~~~~~~~~~~~~~~
Replace the test with common atomics test for u64 and u128 that matches
better QEMU needs.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
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(note: the test isn't working as intended, the next patches fixes it)
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
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Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
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Move qemu_ether_ntoa() which is only needed in net/.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
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Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
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Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Acked-by: John Snow <jsnow@redhat.com>
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This will help to make common code independent.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
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Simplify the macro, not depending on headers defines, but compiler
predefined __SIZEOF__POINTER__ only.
Available since gcc 4.3 and clang 2.8.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
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