We have a couple of PC_COMPAT_3_0, so we should have 3.1 PC machines,
and update the 3.0 machines to make use of those.
Fixes a "Known issue" from https://wiki.qemu.org/Planning/3.1.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Eduardo Habkost <ehabkost@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Message-Id: <20181120132604.22854-1-marcandre.lureau@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
misbehaving guest. This is a follow-up to commit:
commit 5b76ef50f6
Author: Greg Kurz <groug@kaod.org>
Date: Wed Nov 7 01:00:04 2018 +0100
9p: write lock path in v9fs_co_open2()
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Merge remote-tracking branch 'remotes/gkurz/tags/for-upstream' into staging
Fixes yet another use-after-free issue that could be triggered by a
misbehaving guest. This is a follow-up to commit:
commit 5b76ef50f6
Author: Greg Kurz <groug@kaod.org>
Date: Wed Nov 7 01:00:04 2018 +0100
9p: write lock path in v9fs_co_open2()
# gpg: Signature made Tue 20 Nov 2018 12:01:07 GMT
# gpg: using RSA key 71D4D5E5822F73D6
# gpg: Good signature from "Greg Kurz <groug@kaod.org>"
# gpg: aka "Gregory Kurz <gregory.kurz@free.fr>"
# gpg: aka "[jpeg image of size 3330]"
# Primary key fingerprint: B482 8BAF 9431 40CE F2A3 4910 71D4 D5E5 822F 73D6
* remotes/gkurz/tags/for-upstream:
9p: take write lock on fid path updates (CVE-2018-19364)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Recent commit 5b76ef50f6 fixed a race where v9fs_co_open2() could
possibly overwrite a fid path with v9fs_path_copy() while it is being
accessed by some other thread, ie, use-after-free that can be detected
by ASAN with a custom 9p client.
It turns out that the same can happen at several locations where
v9fs_path_copy() is used to set the fid path. The fix is again to
take the write lock.
Fixes CVE-2018-19364.
Cc: P J P <ppandit@redhat.com>
Reported-by: zhibin hu <noirfate@gmail.com>
Reviewed-by: Prasad J Pandit <pjp@fedoraproject.org>
Signed-off-by: Greg Kurz <groug@kaod.org>
Record the command line that was used to start QEMU. This can be
useful for debugging.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
[thuth: removed trailing \n from the message string]
Signed-off-by: Thomas Huth <thuth@redhat.com>
Seabios 1.12 has been released yesterday. Update
our snapshot builds to the final release.
git shortlog
============
Kevin O'Connor (2):
shadow: Rework bios copy code to prevent gcc array-bounds warning
docs: Note v1.12.0 release
Shmuel Eiderman (1):
pvscsi: Scan all 64 possible targets
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Once a test has finished, the pcibus structure should be freed, to
avoid leaking memory and to make sure that the structure is properly
re-initialized when the next test starts.
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
test_qmp_missing_any_arg() is about a bug in infrastructure used by
the QMP core, fixed in commit c489780203. We covered the bug in
infrastructure unit tests (commit bce3035a44). Let's test
it at the QMP level as well.
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[thuth: Tweaked the commit message according to Markus' suggestion]
Signed-off-by: Thomas Huth <thuth@redhat.com>
Add iotest coverage for NBD connections using TLS, including
a couple of code fixes that it pointed out
- Mao Zhongyi: 0/3 Do some cleaning work in qemu-iotests
- Daniel P. Berrangé: io: return 0 for EOF in TLS session read after shutdown
- Daniel P. Berrangé: 0/6 Misc fixes to NBD
- Eric Blake: iotests: Drop use of bash keyword 'function'
-----BEGIN PGP SIGNATURE-----
Comment: Public key at http://people.redhat.com/eblake/eblake.gpg
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Merge remote-tracking branch 'remotes/ericb/tags/pull-nbd-2018-11-19' into staging
nbd patches for 2018-11-19
Add iotest coverage for NBD connections using TLS, including
a couple of code fixes that it pointed out
- Mao Zhongyi: 0/3 Do some cleaning work in qemu-iotests
- Daniel P. Berrangé: io: return 0 for EOF in TLS session read after shutdown
- Daniel P. Berrangé: 0/6 Misc fixes to NBD
- Eric Blake: iotests: Drop use of bash keyword 'function'
# gpg: Signature made Mon 19 Nov 2018 17:43:32 GMT
# gpg: using RSA key A7A16B4A2527436A
# gpg: Good signature from "Eric Blake <eblake@redhat.com>"
# gpg: aka "Eric Blake (Free Software Programmer) <ebb9@byu.net>"
# gpg: aka "[jpeg image of size 6874]"
# Primary key fingerprint: 71C2 CC22 B1C4 6029 27D2 F3AA A7A1 6B4A 2527 436A
* remotes/ericb/tags/pull-nbd-2018-11-19:
iotests: Drop use of bash keyword 'function'
iotests: Also test I/O over NBD TLS
tests: exercise NBD server in TLS mode
tests: add iotests helpers for dealing with TLS certificates
tests: check if qemu-nbd is still alive before waiting
tests: pull qemu-nbd iotest helpers into common.nbd file
io: return 0 for EOF in TLS session read after shutdown
nbd/server: Ignore write errors when replying to NBD_OPT_ABORT
nbd: fix whitespace in server error message
qemu-iotests: Modern shell scripting (use $() instead of ``)
qemu-iotests: convert `pwd` and $(pwd) to $PWD
qemu-iotests: remove unused variable 'here'
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Bash allows functions to be declared with or without the leading
keyword 'function'; but including the keyword does not comply with
POSIX syntax, and is confusing to ksh users where the use of the
keyword changes the scoping rules for functions. Stick to the
POSIX form through iotests.
Done mechanically with:
sed -i 's/^function //' $(git ls-files tests/qemu-iotests)
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20181116215002.2124581-1-eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Enhance test 233 to also perform I/O beyond the initial handshake.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20181118022403.2211483-1-eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Add tests that validate it is possible to connect to an NBD server
running TLS mode. Also test mis-matched TLS vs non-TLS connections
correctly fail.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20181116155325.22428-7-berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Tested-by: Eric Blake <eblake@redhat.com>
[eblake: rebase to iotests shell cleanups, use ss instead of socat for
port probing, sanitize port number in expected output]
Signed-off-by: Eric Blake <eblake@redhat.com>
Add helpers to common.tls for creating TLS certificates for a CA,
server and client.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20181116155325.22428-6-berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[eblake: spelling and quoting touchups]
Signed-off-by: Eric Blake <eblake@redhat.com>
If the qemu-nbd UNIX socket has not shown up, the tests will sleep a bit
and then check again repeatedly for up to 30 seconds. This is pointless
if the qemu-nbd process has quit due to an error, so check whether the
pid is still alive before waiting and retrying.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20181116155325.22428-5-berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
The helpers for starting/stopping qemu-nbd in 058 will be useful in
other test cases, so move them into a common.nbd file.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20181116155325.22428-4-berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[eblake: fix shell quoting]
Signed-off-by: Eric Blake <eblake@redhat.com>
GNUTLS takes a paranoid approach when seeing 0 bytes returned by the
underlying OS read() function. It will consider this an error and
return GNUTLS_E_PREMATURE_TERMINATION instead of propagating the 0
return value. It expects apps to arrange for clean termination at
the protocol level and not rely on seeing EOF from a read call to
detect shutdown. This is to harden apps against a malicious 3rd party
causing termination of the sockets layer.
This is unhelpful for the QEMU NBD code which does have a clean
protocol level shutdown, but still relies on seeing 0 from the I/O
channel read in the coroutine handling incoming replies.
The upshot is that when using a plain NBD connection shutdown is
silent, but when using TLS, the client spams the console with
Cannot read from TLS channel: Broken pipe
The NBD connection has, however, called qio_channel_shutdown()
at this point to indicate that it is done with I/O. This gives
the opportunity to optimize the code such that when the channel
has been shutdown in the read direction, the error code
GNUTLS_E_PREMATURE_TERMINATION gets turned into a '0' return
instead of an error.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20181119134228.11031-1-berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Commit 37ec36f6 intentionally ignores errors when trying to reply
to an NBD_OPT_ABORT request for plaintext clients, but did not make
the same change for a TLS server. Since NBD_OPT_ABORT is
documented as being a potential for an EPIPE when the client hangs
up without waiting for our reply, we don't need to pollute the
server's output with that failure.
Signed-off-by: Eric Blake <eblake@redhat.com>
Message-Id: <20181117223221.2198751-1-eblake@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
A space was missing after the option number was printed:
Option 0x8not permitted before TLS
becomes
Option 0x8 not permitted before TLS
This fixes
commit 3668328303
Author: Eric Blake <eblake@redhat.com>
Date: Fri Oct 14 13:33:09 2016 -0500
nbd: Send message along with server NBD_REP_ERR errors
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20181116155325.22428-2-berrange@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[eblake: move lone space to next line]
Signed-off-by: Eric Blake <eblake@redhat.com>
Various shell files contain a mix between obsolete ``
and modern $(); It would be nice to convert to using
$() everywhere. For now, just do the qemu-iotests directory.
Cc: kwolf@redhat.com
Cc: mreitz@redhat.com
Cc: eblake@redhat.com
Suggested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com>
Message-Id: <20181024094051.4470-4-maozhongyi@cmss.chinamobile.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[eblake: tweak commit message]
Signed-off-by: Eric Blake <eblake@redhat.com>
POSIX requires $PWD to be reliable, and we expect all
shells used by qemu scripts to be relatively close to
POSIX. Thus, it is smarter to avoid forking the pwd
executable for something that is already available in
the environment.
So replace it with the following:
sed -i 's/\(`pwd`\|\$(pwd)\)/$PWD/g' $(git grep -l pwd)
Then delete a pointless line assigning PWD to itself.
Cc: kwolf@redhat.com
Cc: mreitz@redhat.com
Cc: eblake@redhat.com
Suggested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com>
Message-Id: <20181024094051.4470-2-maozhongyi@cmss.chinamobile.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[eblake: touch up commit message, reorder series, tweak a couple more files]
Signed-off-by: Eric Blake <eblake@redhat.com>
Running
git grep '\$here' tests/qemu-iotests
has 0 hits, which means we are setting a variable that has
no use. It appears that commit e8f8624d removed the last
use. So execute the following cmd to remove all of
the 'here=...' lines as dead code.
sed -i '/^here=/d' $(git grep -l '^here=' tests/qemu-iotests)
Cc: kwolf@redhat.com
Cc: mreitz@redhat.com
Cc: eblake@redhat.com
Suggested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com>
Message-Id: <20181024094051.4470-3-maozhongyi@cmss.chinamobile.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[eblake: touch up commit message, reorder series, rebase to master]
Signed-off-by: Eric Blake <eblake@redhat.com>
* various MAINTAINERS file updates
* hw/block/onenand: use qemu_log_mask() for reporting
* hw/block/onenand: Fix off-by-one error allowing out-of-bounds read
on the n800 and n810 machine models
* target/arm: fix smc incorrectly trapping to EL3 when secure is off
* hw/arm/stm32f205: Fix the UART and Timer region size
* target/arm: read ID registers for KVM guests so they can be
used to gate "is feature X present" checks
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20181119' into staging
target-arm queue:
* various MAINTAINERS file updates
* hw/block/onenand: use qemu_log_mask() for reporting
* hw/block/onenand: Fix off-by-one error allowing out-of-bounds read
on the n800 and n810 machine models
* target/arm: fix smc incorrectly trapping to EL3 when secure is off
* hw/arm/stm32f205: Fix the UART and Timer region size
* target/arm: read ID registers for KVM guests so they can be
used to gate "is feature X present" checks
# gpg: Signature made Mon 19 Nov 2018 15:56:44 GMT
# gpg: using RSA key 3C2525ED14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"
# gpg: aka "Peter Maydell <pmaydell@gmail.com>"
# gpg: aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>"
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83 15CF 3C25 25ED 1436 0CDE
* remotes/pmaydell/tags/pull-target-arm-20181119:
MAINTAINERS: list myself as maintainer for various Arm boards
hw/block/onenand: use qemu_log_mask() for reporting
hw/block/onenand: Fix off-by-one error allowing out-of-bounds read
target/arm: fix smc incorrectly trapping to EL3 when secure is off
hw/arm/stm32f205: Fix the UART and Timer region size
MAINTAINERS: Add entries for missing ARM boards
target/arm: Fill in ARMISARegisters for kvm32
target/arm: Introduce read_sys_reg32 for kvm32
target/arm: Fill in ARMISARegisters for kvm64
target/arm: Install ARMISARegisters from kvm host
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
In practice for most of the more-or-less orphan Arm board models,
I will review patches and put them in via the target-arm tree.
So list myself as an "Odd Fixes" status maintainer for them.
This commit downgrades these boards to "Odd Fixes":
* Allwinner-A10
* Exynos
* Calxeda Highbank
* Canon DIGIC
* Musicpal
* nSeries
* Palm
* PXA2xx
These boards were already "Odd Fixes":
* Gumstix
* i.MX31 (kzm)
Philippe Mathieu-Daudé has requested to be moved to R:
status for Gumstix now that I am listed as the M: contact.
Some boards are maintained, but their patches still go
via the target-arm tree, so add myself as a secondary
maintainer contact for those:
* Xilinx Zynq
* Xilinx ZynqMP
* STM32F205
* Netduino 2
* SmartFusion2
* Mecraft M2S-FG484
* ASPEED BMCs
* NRF51
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-id: 20181108134139.31666-1-peter.maydell@linaro.org
Update the onenand device to use qemu_log_mask() for reporting
guest errors and unimplemented features, rather than plain
fprintf() and hw_error().
(We leave the hw_error() in onenand_reset(), as that is
triggered by a failure to read the underlying block device
for the bootRAM, not by guest action.)
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20181115143535.5885-3-peter.maydell@linaro.org
An off-by-one error in a switch case in onenand_read() allowed
a misbehaving guest to read off the end of a block of memory.
NB: the onenand device is used only by the "n800" and "n810"
machines, which are usable only with TCG, not KVM, so this is
not a security issue.
Reported-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20181115143535.5885-2-peter.maydell@linaro.org
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit fixes a case where the CPU would try to go to EL3 when
executing an smc instruction, even though ARM_FEATURE_EL3 is false. This
case is raised when the PSCI conduit is set to smc, but the smc
instruction does not lead to a valid PSCI call.
QEMU crashes with an assertion failure latter on because of incoherent
mmu_idx.
This commit refactors the pre_smc helper by enumerating all the possible
way of handling an scm instruction, and covering the previously missing
case leading to the crash.
The following minimal test would crash before this commit:
.global _start
.text
_start:
ldr x0, =0xdeadbeef ; invalid PSCI call
smc #0
run with the following command line:
aarch64-linux-gnu-gcc -nostdinc -nostdlib -Wl,-Ttext=40000000 \
-o test test.s
qemu-system-aarch64 -M virt,virtualization=on,secure=off \
-cpu cortex-a57 -kernel test
Signed-off-by: Luc Michel <luc.michel@greensocs.com>
Message-id: 20181117160213.18995-1-luc.michel@greensocs.com
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The UART and timer devices for the stm32f205 were being created
with memory regions that were too large. Use the size specified
in the chip datasheet.
The old sizes were so large that the devices would overlap with
each other in the SoC memory map, so this fixes a bug that
caused odd behavior and/or crashes when trying to set up multiple
UARTs.
Signed-off-by: Seth Kintigh <skintigh@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: rephrased commit message to follow our usual standard]
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add entries for the boards "mcimx6ul-evk", "mcimx7d-sabre", "raspi2",
"raspi3", "sabrelite", "vexpress-a15", "vexpress-a9" and "virt".
While we're at it, also adjust the "i.MX31" section a little bit,
so that the wildcards there do not match anymore for unrelated files
(e.g. the new hw/misc/imx6ul_ccm.c file).
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-id: 1542184999-11145-1-git-send-email-thuth@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20181113180154.17903-5-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Assert that the value to be written is the correct size.
No change in functionality here, just mirroring the same
function from kvm64.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20181113180154.17903-4-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20181113180154.17903-3-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The ID registers are replacing (some of) the feature bits.
We need (some of) these values to determine the set of data
to be handled during migration.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20181113180154.17903-2-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
s->locked_shared_perm is the set of bits locked in the file, which is
the inverse of the permissions actually shared. So we need to pass them
as they are to raw_apply_lock_bytes() instead of inverting them again.
Reported-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
bdrv_reopen_multiple() does not invoke bdrv_reopen_abort() for the
element of the reopen queue for which bdrv_reopen_prepare() failed,
because it assumes that the prepare function will have rolled back all
changes already.
However, bdrv_reopen_prepare() does not do this in every case: It may
notice an error after BlockDriver.bdrv_reopen_prepare() succeeded, and
it will not invoke BlockDriver.bdrv_reopen_abort() then; and neither
will bdrv_reopen_multiple(), as explained above.
This is wrong because we must always call .bdrv_reopen_commit() or
.bdrv_reopen_abort() after .bdrv_reopen_prepare() has succeeded.
Otherwise, the block driver has no chance to undo what it has done in
its implementation of .bdrv_reopen_prepare().
To fix this, bdrv_reopen_prepare() has to call .bdrv_reopen_abort() if
it wants to return an error after .bdrv_reopen_prepare() has succeeded.
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
If you have a capable file system (tmpfs is good, ext4 not so much;
run ./check with TEST_DIR pointing to a good location so as not
to skip the test), it's actually possible to create a qcow2 file
that expands to a sparse 512T image with just over 38M of content.
The test is not the world's fastest (qemu crawling through 256M
bits of refcount table to find the next cluster to allocate takes
several seconds, as does qemu-img check reporting millions of
leaked clusters); but it DOES catch the problem that the previous
patch just fixed where writing a compressed cluster to a full
image ended up overwriting the wrong cluster.
Suggested-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Our code was already checking that we did not attempt to
allocate more clusters than what would fit in an INT64 (the
physical maximimum if we can access a full off_t's worth of
data). But this does not catch smaller limits enforced by
various spots in the qcow2 image description: L1 and normal
clusters of L2 are documented as having bits 63-56 reserved
for other purposes, capping our maximum offset at 64PB (bit
55 is the maximum bit set). And for compressed images with
2M clusters, the cap drops the maximum offset to bit 48, or
a maximum offset of 512TB. If we overflow that offset, we
would write compressed data into one place, but try to
decompress from another, which won't work.
It's actually possible to prove that overflow can cause image
corruption without this patch; I'll add the iotests separately
in the next commit.
Signed-off-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Although off_t permits up to 63 bits (8EB) of file offsets, in
practice, we're going to hit other limits first. Document some
of those limits in the qcow2 spec (some are inherent, others are
implementation choices of qemu), and how choice of cluster size
can influence some of the limits.
While we cannot map any uncompressed virtual cluster to any
address higher than 64 PB (56 bits) (due to the current L1/L2
field encoding stopping at bit 55), qemu's cap of 8M for the
refcount table can still access larger host addresses for some
combinations of large clusters and small refcount_order. For
comparison, ext4 with 4k blocks caps files at 16PB.
Another interesting limit: for compressed clusters, the L2 layout
requires an ever-smaller maximum host offset as cluster size gets
larger, down to a 512 TB maximum with 2M clusters. In particular,
note that with a cluster size of 8k or smaller, the L2 entry for
a compressed cluster could technically point beyond the 64PB mark,
but when you consider that with 8k clusters and refcount_order = 0,
you cannot access beyond 512T without exceeding qemu's limit of an
8M cap on the refcount table, it is unlikely that any image in the
wild has attempted to do so. To be safe, let's document that bits
beyond 55 in a compressed cluster must be 0.
Signed-off-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Don't leak 'cluster' in the mapping == NULL case. Found by Coverity
(CID 1055918).
Fixes: 8d9401c279
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Commit c8a35f1cf0 "fdc: use IsaDma interface instead of global DMA_*
functions" accidentally introduced a segfault in fdctrl_stop_transfer() for
non-DMA transfers.
If fdctrl->dma_chann has not been configured then the fdctrl->dma interface
reference isn't initialised during isabus_fdc_realize(). Unfortunately
fdctrl_stop_transfer() unconditionally references the DMA interface when
finishing the transfer causing a NULL pointer dereference.
Fix the issue by adding a check in fdctrl_stop_transfer() so that the DMA
interface reference and release method is only invoked if fdctrl->dma_chann
has been set.
(This issue was discovered by Martin testing a recent change in the NetBSD
installer under qemu-system-sparc)
Cc: qemu-stable@nongnu.org
Reported-by: Martin Husemann <martin@duskware.de>
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Hervé Poussineau <hpoussin@reactos.org>
Reviewed-by: John Snow <jsnow@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Currently, the nvme_cmb_ops mr doesn't check the addr and size.
This can lead an oob access issue. This is triggerable in the guest.
Add check to avoid this issue.
Fixes CVE-2018-16847.
Reported-by: Li Qiang <liq3ea@gmail.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Li Qiang <liq3ea@gmail.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
The MAINTAINERS file is a bit sparse on information about what
the different designators are. Let's add some more information
to give contributors a better idea about what the different
roles are.
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Message-id: 20181026105711.29605-1-cohuck@redhat.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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Merge remote-tracking branch 'remotes/amarkovic/tags/mips-queue-november-2018-v2' into staging
MIPS queue for QEMU 3.1-rc2 - v2
# gpg: Signature made Sat 17 Nov 2018 18:30:46 GMT
# gpg: using RSA key D4972A8967F75A65
# gpg: Good signature from "Aleksandar Markovic <amarkovic@wavecomp.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 8526 FBF1 5DA3 811F 4A01 DD75 D497 2A89 67F7 5A65
* remotes/amarkovic/tags/mips-queue-november-2018-v2:
MAINTAINERS: Add Stefan Markovic as a MIPS reviewer
target/mips: Disable R5900 support
target/mips: Rename MMI-related functions
target/mips: Rename MMI-related opcodes
target/mips: Rename MMI-related masks
target/mips: Guard check_insn with INSN_R5900 check
target/mips: Guard check_insn_opc_user_only with INSN_R5900 check
target/mips: Fix decoding mechanism of special R5900 opcodes
target/mips: Fix decoding mechanism of R5900 DIV1 and DIVU1
target/mips: Fix decoding mechanism of R5900 MFLO1, MFHI1, MTLO1 and MTHI1
linux-user: Update MIPS specific prctl() implementation
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This pull request contains four patches that aren't really related to
each other aside from all being bug fixes that I think should go in for
3.1.0:
* The second half of Alistair's memory leak patch set that I missed last
week.
* A fix to make fclass.d availiable only on RV64IFD systems (without
this it's availiable on RV32IFD systems, truncating the result).
* A fix to make sfence.vm availiable only in priv-1.9.1, and sfence.vma
only availiable in priv-1.10.
* A change to respect fences in user-mode emulators, which were
previously treated as NOPs.
As usual, this builds and boot Linux for me. I don't think I have
anything else planned for 3.1.0, but I may be wrong as things are a bit
hectic this week.
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Merge remote-tracking branch 'remotes/riscv/tags/riscv-for-master-3.1-rc2' into staging
RISC-V Patches for 3.1-rc2
This pull request contains four patches that aren't really related to
each other aside from all being bug fixes that I think should go in for
3.1.0:
* The second half of Alistair's memory leak patch set that I missed last
week.
* A fix to make fclass.d availiable only on RV64IFD systems (without
this it's availiable on RV32IFD systems, truncating the result).
* A fix to make sfence.vm availiable only in priv-1.9.1, and sfence.vma
only availiable in priv-1.10.
* A change to respect fences in user-mode emulators, which were
previously treated as NOPs.
As usual, this builds and boot Linux for me. I don't think I have
anything else planned for 3.1.0, but I may be wrong as things are a bit
hectic this week.
# gpg: Signature made Tue 13 Nov 2018 23:48:38 GMT
# gpg: using RSA key EF4CA1502CCBAB41
# gpg: Good signature from "Palmer Dabbelt <palmer@dabbelt.com>"
# gpg: aka "Palmer Dabbelt <palmer@sifive.com>"
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
# Primary key fingerprint: 00CE 76D1 8349 60DF CE88 6DF8 EF4C A150 2CCB AB41
* remotes/riscv/tags/riscv-for-master-3.1-rc2:
RISC-V: Respect fences for user-only emulators
target/riscv: Fix sfence.vm/a both available in any priv version
target/riscv: Fix FCLASS_D being treated as RV64 only
hw/riscv/virt: Free the test device tree node name
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Add Stefan Markovic as a MIPS reviewer. He had several key
contributions to QEMU for MIPS this year. He is a meticulous
person with the ability to think and act on many levels.
Reviewed-by: Stefan Markovic <smarkovic@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Disable R5900 support. There are some outstanding issues related
to ABI support and emulation accuracy, that were not understood
well during review process. Disable to avoid backward compatibility
issues.
Reverts commit ed4f49ba9b.
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
