Commit Graph

99790 Commits

Author SHA1 Message Date
Markus Armbruster
66997c42e0 cleanup: Tweak and re-run return_directly.cocci
Tweak the semantic patch to drop redundant parenthesis around the
return expression.

Coccinelle drops a comment in hw/rdma/vmw/pvrdma_cmd.c; restored
manually.

Coccinelle messes up vmdk_co_create(), not sure why.  Change dropped,
will be done manually in the next commit.

Line breaks in target/avr/cpu.h and hw/rdma/vmw/pvrdma_cmd.c tidied up
manually.

Whitespace in tools/virtiofsd/fuse_lowlevel.c tidied up manually.

checkpatch.pl complains "return of an errno should typically be -ve"
two times for hw/9pfs/9p-synth.c.  Preexisting, the patch merely makes
it visible to checkpatch.pl.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221122134917.1217307-2-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2022-12-14 16:19:35 +01:00
Markus Armbruster
10220d2f96 io: Tidy up fat-fingered parameter name
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221121085054.683122-11-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-12-14 16:19:35 +01:00
Markus Armbruster
d1c81c3496 qapi: Use returned bool to check for failure (again)
Commit 012d4c96e2 changed the visitor functions taking Error ** to
return bool instead of void, and the commits following it used the new
return value to simplify error checking.  Since then a few more uses
in need of the same treatment crept in.  Do that.  All pretty
mechanical except for

* balloon_stats_get_all()

  This is basically the same transformation commit 012d4c96e2 applied
  to the virtual walk example in include/qapi/visitor.h.

* set_max_queue_size()

  Additionally replace "goto end of function" by return.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221121085054.683122-10-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-12-14 16:19:35 +01:00
Markus Armbruster
f560eb1f0a sockets: Use ERRP_GUARD() where obviously appropriate
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221121085054.683122-9-armbru@redhat.com>
2022-12-14 16:19:35 +01:00
Markus Armbruster
0a3090b1d2 qemu-config: Use ERRP_GUARD() where obviously appropriate
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221121085054.683122-8-armbru@redhat.com>
2022-12-14 16:19:35 +01:00
Markus Armbruster
f766e6dc6a qemu-config: Make config_parse_qdict() return bool
This simplifies error checking.

Cc: Hanna Reitz <hreitz@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221121085054.683122-7-armbru@redhat.com>
2022-12-14 16:19:35 +01:00
Markus Armbruster
50707b391e monitor: Use ERRP_GUARD() in monitor_init()
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221121085054.683122-6-armbru@redhat.com>
2022-12-14 16:19:35 +01:00
Markus Armbruster
457552fc7d monitor: Simplify monitor_fd_param()'s error handling
Cc: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221121085054.683122-5-armbru@redhat.com>
2022-12-14 16:19:35 +01:00
Markus Armbruster
05e385d2a9 error: Move ERRP_GUARD() to the beginning of the function
include/qapi/error.h advises to put ERRP_GUARD() right at the
beginning of the function, because only then can it guard the whole
function.  Clean up the few spots disregarding the advice.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221121085054.683122-4-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-12-14 16:19:35 +01:00
Markus Armbruster
740d6c4eba error: Drop a few superfluous ERRP_GUARD()
include/qapi/error.h on ERRP_GUARD():

 * It must be used when the function dereferences @errp or passes
 * @errp to error_prepend(), error_vprepend(), or error_append_hint().
 * It is safe to use even when it's not needed, but please avoid
 * cluttering the source with useless code.

Clean up some of this clutter.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221121085054.683122-3-armbru@redhat.com>
2022-12-14 16:19:35 +01:00
Markus Armbruster
6c37ebf330 error: Drop some obviously superfluous error_propagate()
When error_propagate(errp, local_err) is the only reader of
@local_err, we can just as well change its writers to write @errp
directly, and drop the error_propagate() along with @local_err.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20221121085054.683122-2-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
2022-12-14 16:19:35 +01:00
Markus Armbruster
3d558330ad Drop more useless casts from void * to pointer
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20221123133811.1398562-1-armbru@redhat.com>
2022-12-14 16:19:35 +01:00
Stefan Hajnoczi
ea3a008d2d Update VERSION for v7.2.0-rc4
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-12-06 19:53:34 -05:00
Song Gao
edc93f455f Revert "hw/loongarch/virt: Add cfi01 pflash device"
This reverts commit 14dccc8ea6.

Signed-off-by: Song Gao <gaosong@loongson.cn>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20221205113007.683505-1-gaosong@loongson.cn>
2022-12-05 11:24:35 -05:00
Stefan Hajnoczi
aaf47c7e8b * Fix potential undefined behavior in cleanup of migration-test
* Fix a s390x instruction that causes Java to crash
 * Fix a typo in a comment in next-fb.c
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Merge tag 'pull-request-2022-12-04' of https://gitlab.com/thuth/qemu into staging

* Fix potential undefined behavior in cleanup of migration-test
* Fix a s390x instruction that causes Java to crash
* Fix a typo in a comment in next-fb.c

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# gpg: Signature made Sun 04 Dec 2022 02:04:43 EST
# 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-2022-12-04' of https://gitlab.com/thuth/qemu:
  hw/display/next-fb: Fix comment typo
  target/s390x/tcg: Fix and improve the SACF instruction
  tests/qtest/migration-test: Fix unlink error and memory leaks

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-12-04 11:07:46 -05:00
Stefan Hajnoczi
777fa06376 pull for 7.2-rc4
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Merge tag 'pull-loongarch-20221202' of https://gitlab.com/gaosong/qemu into staging

pull for 7.2-rc4

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# gpg: Signature made Fri 02 Dec 2022 05:12:18 EST
# gpg:                using RSA key B8FF1DA0D2FDCB2DA09C6C2C40A2FFF239263EDF
# gpg: Good signature from "Song Gao <m17746591750@163.com>" [unknown]
# 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: B8FF 1DA0 D2FD CB2D A09C  6C2C 40A2 FFF2 3926 3EDF

* tag 'pull-loongarch-20221202' of https://gitlab.com/gaosong/qemu:
  hw/loongarch/virt: Add cfi01 pflash device

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-12-04 11:07:13 -05:00
Stefan Hajnoczi
bb94fa8646 hw/nvme fixes
* fixes for aio cancellation in commands that may issue several
     aios
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Merge tag 'nvme-next-pull-request' of git://git.infradead.org/qemu-nvme into staging

hw/nvme fixes

  * fixes for aio cancellation in commands that may issue several
    aios

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# gpg: Signature made Thu 01 Dec 2022 11:48:36 EST
# gpg:                using RSA key 522833AA75E2DCE6A24766C04DE1AF316D4F0DE9
# gpg: Good signature from "Klaus Jensen <its@irrelevant.dk>" [unknown]
# gpg:                 aka "Klaus Jensen <k.jensen@samsung.com>" [unknown]
# 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: DDCA 4D9C 9EF9 31CC 3468  4272 63D5 6FC5 E55D A838
#      Subkey fingerprint: 5228 33AA 75E2 DCE6 A247  66C0 4DE1 AF31 6D4F 0DE9

* tag 'nvme-next-pull-request' of git://git.infradead.org/qemu-nvme:
  hw/nvme: remove copy bh scheduling
  hw/nvme: fix aio cancel in dsm
  hw/nvme: fix aio cancel in zone reset
  hw/nvme: fix aio cancel in flush
  hw/nvme: fix aio cancel in format

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-12-04 11:01:45 -05:00
Stefan Hajnoczi
4bd638ac65 * Fix MMX instructions for system emulators
* Fix uninitialized TranslateFault after canonical address checks
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Merge tag 'for-upstream' of https://gitlab.com/bonzini/qemu into staging

* Fix MMX instructions for system emulators
* Fix uninitialized TranslateFault after canonical address checks

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# gpg: Signature made Thu 01 Dec 2022 03:53:33 EST
# 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

* tag 'for-upstream' of https://gitlab.com/bonzini/qemu:
  target/i386: Always completely initialize TranslateFault
  target/i386: allow MMX instructions with CR4.OSFXSR=0

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-12-04 11:00:44 -05:00
Stefan Hajnoczi
42f3253c34 virtio: regression fix
Fixes regression with migration and vsock, as fixing that
 exposes some known issues in vhost user cleanup, this attempts
 to fix those as well. More work on vhost user is needed :)
 
 Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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Merge tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu into staging

virtio: regression fix

Fixes regression with migration and vsock, as fixing that
exposes some known issues in vhost user cleanup, this attempts
to fix those as well. More work on vhost user is needed :)

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

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# gpg: Signature made Thu 01 Dec 2022 02:37:05 EST
# gpg:                using RSA key 5D09FD0871C8F85B94CA8A0D281F0DB8D28D5469
# gpg:                issuer "mst@redhat.com"
# gpg: Good signature from "Michael S. Tsirkin <mst@kernel.org>" [full]
# gpg:                 aka "Michael S. Tsirkin <mst@redhat.com>" [full]
# Primary key fingerprint: 0270 606B 6F3C DF3D 0B17  0970 C350 3912 AFBE 8E67
#      Subkey fingerprint: 5D09 FD08 71C8 F85B 94CA  8A0D 281F 0DB8 D28D 5469

* tag 'for_upstream' of https://git.kernel.org/pub/scm/virt/kvm/mst/qemu:
  include/hw: VM state takes precedence in virtio_device_should_start
  hw/virtio: generalise CHR_EVENT_CLOSED handling
  hw/virtio: add started_vu status field to vhost-user-gpio
  vhost: enable vrings in vhost_dev_start() for vhost-user devices
  tests/qtests: override "force-legacy" for gpio virtio-mmio tests

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-12-04 11:00:26 -05:00
Evgeny Ermakov
c1966f515d hw/display/next-fb: Fix comment typo
Signed-off-by: Evgeny Ermakov <evgeny.v.ermakov@gmail.com>
Message-Id: <20221125160849.23711-1-evgeny.v.ermakov@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-12-03 22:07:07 +01:00
Thomas Huth
21be74a9a5 target/s390x/tcg: Fix and improve the SACF instruction
The SET ADDRESS SPACE CONTROL FAST instruction is not privileged, it can be
used from problem space, too. Just the switching to the home address space
is privileged and should still generate a privilege exception. This bug is
e.g. causing programs like Java that use the "getcpu" vdso kernel function
to crash (see https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=990417#26 ).

While we're at it, also check if DAT is not enabled. In that case the
instruction is supposed to generate a special operation exception.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/655
Message-Id: <20221201184443.136355-1-thuth@redhat.com>
Reviewed-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-12-03 22:04:40 +01:00
Thomas Huth
0f0a9e4e5c tests/qtest/migration-test: Fix unlink error and memory leaks
When running the migration test compiled with Clang from Fedora 37
and sanitizers enabled, there is an error complaining about unlink():

 ../tests/qtest/migration-test.c:1072:12: runtime error: null pointer
  passed as argument 1, which is declared to never be null
 /usr/include/unistd.h:858:48: note: nonnull attribute specified here
 SUMMARY: UndefinedBehaviorSanitizer: undefined-behavior
  ../tests/qtest/migration-test.c:1072:12 in
 (test program exited with status code 1)
 TAP parsing error: Too few tests run (expected 33, got 20)

The data->clientcert and data->clientkey pointers can indeed be unset
in some tests, so we have to check them before calling unlink() with
those.

While we're at it, I also noticed that the code is only freeing
some but not all of the allocated strings in this function, and
indeed, valgrind is also complaining about memory leaks here.
So let's call g_free() on all allocated strings to avoid leaking
memory here.

Message-Id: <20221125083054.117504-1-thuth@redhat.com>
Tested-by: Bin Meng <bmeng@tinylab.org>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-12-03 21:56:13 +01:00
Xiaojuan Yang
14dccc8ea6
hw/loongarch/virt: Add cfi01 pflash device
Add cfi01 pflash device for LoongArch virt machine

Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20221130100647.398565-1-yangxiaojuan@loongson.cn>
Signed-off-by: Song Gao <gaosong@loongson.cn>
2022-12-02 18:03:05 +08:00
Richard Henderson
8218c048be target/i386: Always completely initialize TranslateFault
In get_physical_address, the canonical address check failed to
set TranslateFault.stage2, which resulted in an uninitialized
read from the struct when reporting the fault in x86_cpu_tlb_fill.

Adjust all error paths to use structure assignment so that the
entire struct is always initialized.

Reported-by: Daniel Hoffman <dhoff749@gmail.com>
Fixes: 9bbcf37219 ("target/i386: Reorg GET_HPHYS")
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20221201074522.178498-1-richard.henderson@linaro.org>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1324
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-12-01 09:53:24 +01:00
Paolo Bonzini
38e65936a8 target/i386: allow MMX instructions with CR4.OSFXSR=0
MMX state is saved/restored by FSAVE/FRSTOR so the instructions are
not illegal opcodes even if CR4.OSFXSR=0.  Make sure that validate_vex
takes into account the prefix and only checks HF_OSFXSR_MASK in the
presence of an SSE instruction.

Fixes: 20581aadec ("target/i386: validate VEX prefixes via the instructions' exception classes", 2022-10-18)
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1350
Reported-by: Helge Konetzka (@hejko on gitlab.com)
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2022-12-01 09:05:05 +01:00
Klaus Jensen
83f56ac321 hw/nvme: remove copy bh scheduling
Fix a potential use-after-free by removing the bottom half and enqueuing
the completion directly.

Fixes: 796d20681d ("hw/nvme: reimplement the copy command to allow aio cancellation")
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
2022-12-01 08:45:03 +01:00
Klaus Jensen
818b9b8f5e hw/nvme: fix aio cancel in dsm
When the DSM operation is cancelled asynchronously, we set iocb->ret to
-ECANCELED. However, the callback function only checks the return value
of the completed aio, which may have completed succesfully prior to the
cancellation and thus the callback ends up continuing the dsm operation
instead of bailing out. Fix this.

Secondly, fix a potential use-after-free by removing the bottom half and
enqueuing the completion directly.

Fixes: d7d1474fd8 ("hw/nvme: reimplement dsm to allow cancellation")
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
2022-12-01 08:45:00 +01:00
Klaus Jensen
36a251c346 hw/nvme: fix aio cancel in zone reset
If the zone reset operation is cancelled but the block unmap operation
completes normally, the callback will continue resetting the next zone
since it neglects to check iocb->ret which will have been set to
-ECANCELED. Make sure that this is checked and bail out if an error is
present.

Secondly, fix a potential use-after-free by removing the bottom half and
enqueuing the completion directly.

Fixes: 63d96e4ffd ("hw/nvme: reimplement zone reset to allow cancellation")
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
2022-12-01 08:44:56 +01:00
Klaus Jensen
3dbc1708ea hw/nvme: fix aio cancel in flush
Make sure that iocb->aiocb is NULL'ed when cancelling.

Fix a potential use-after-free by removing the bottom half and enqueuing
the completion directly.

Fixes: 38f4ac65ac ("hw/nvme: reimplement flush to allow cancellation")
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
2022-12-01 08:44:52 +01:00
Klaus Jensen
433c71e494 hw/nvme: fix aio cancel in format
There are several bugs in the async cancel code for the Format command.

Firstly, cancelling a format operation neglects to set iocb->ret as well
as clearing the iocb->aiocb after cancelling the underlying aiocb which
causes the aio callback to ignore the cancellation. Trivial fix.

Secondly, and worse, because the request is queued up for posting to the
CQ in a bottom half, if the cancellation is due to the submission queue
being deleted (which calls blk_aio_cancel), the req structure is
deallocated in nvme_del_sq prior to the bottom half being schedulued.

Fix this by simply removing the bottom half, there is no reason to defer
it anyway.

Fixes: 3bcf26d3d6 ("hw/nvme: reimplement format nvm to allow cancellation")
Reported-by: Jonathan Derrick <jonathan.derrick@linux.dev>
Reviewed-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
2022-12-01 08:44:16 +01:00
Alex Bennée
4987e5bf2e include/hw: VM state takes precedence in virtio_device_should_start
The VM status should always preempt the device status for these
checks. This ensures the device is in the correct state when we
suspend the VM prior to migrations. This restores the checks to the
order they where in before the refactoring moved things around.

While we are at it lets improve our documentation of the various
fields involved and document the two functions.

Fixes: 9f6bcfd99f (hw/virtio: move vm_running check to virtio_device_started)
Fixes: 259d69c00b (hw/virtio: introduce virtio_device_should_start)
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20221130112439.2527228-6-alex.bennee@linaro.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2022-12-01 02:30:18 -05:00
Alex Bennée
71e076a07d hw/virtio: generalise CHR_EVENT_CLOSED handling
..and use for both virtio-user-blk and virtio-user-gpio. This avoids
the circular close by deferring shutdown due to disconnection until a
later point. virtio-user-blk already had this mechanism in place so
generalise it as a vhost-user helper function and use for both blk and
gpio devices.

While we are at it we also fix up vhost-user-gpio to re-establish the
event handler after close down so we can reconnect later.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Raphael Norwitz <raphael.norwitz@nutanix.com>
Message-Id: <20221130112439.2527228-5-alex.bennee@linaro.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2022-12-01 02:30:13 -05:00
Alex Bennée
060f4a9440 hw/virtio: add started_vu status field to vhost-user-gpio
As per the fix to vhost-user-blk in f5b22d06fb (vhost: recheck dev
state in the vhost_migration_log routine) we really should track the
connection and starting separately.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20221130112439.2527228-4-alex.bennee@linaro.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2022-12-01 02:30:09 -05:00
Stefano Garzarella
4daa5054c5 vhost: enable vrings in vhost_dev_start() for vhost-user devices
Commit 02b61f38d3 ("hw/virtio: incorporate backend features in features")
properly negotiates VHOST_USER_F_PROTOCOL_FEATURES with the vhost-user
backend, but we forgot to enable vrings as specified in
docs/interop/vhost-user.rst:

    If ``VHOST_USER_F_PROTOCOL_FEATURES`` has not been negotiated, the
    ring starts directly in the enabled state.

    If ``VHOST_USER_F_PROTOCOL_FEATURES`` has been negotiated, the ring is
    initialized in a disabled state and is enabled by
    ``VHOST_USER_SET_VRING_ENABLE`` with parameter 1.

Some vhost-user front-ends already did this by calling
vhost_ops.vhost_set_vring_enable() directly:
- backends/cryptodev-vhost.c
- hw/net/virtio-net.c
- hw/virtio/vhost-user-gpio.c

But most didn't do that, so we would leave the vrings disabled and some
backends would not work. We observed this issue with the rust version of
virtiofsd [1], which uses the event loop [2] provided by the
vhost-user-backend crate where requests are not processed if vring is
not enabled.

Let's fix this issue by enabling the vrings in vhost_dev_start() for
vhost-user front-ends that don't already do this directly. Same thing
also in vhost_dev_stop() where we disable vrings.

[1] https://gitlab.com/virtio-fs/virtiofsd
[2] https://github.com/rust-vmm/vhost/blob/240fc2966/crates/vhost-user-backend/src/event_loop.rs#L217

Fixes: 02b61f38d3 ("hw/virtio: incorporate backend features in features")
Reported-by: German Maglione <gmaglione@redhat.com>
Tested-by: German Maglione <gmaglione@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Raphael Norwitz <raphael.norwitz@nutanix.com>
Message-Id: <20221123131630.52020-1-sgarzare@redhat.com>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20221130112439.2527228-3-alex.bennee@linaro.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2022-12-01 02:30:04 -05:00
Alex Bennée
523e40022f tests/qtests: override "force-legacy" for gpio virtio-mmio tests
The GPIO device is a VIRTIO_F_VERSION_1 devices but running with a
legacy MMIO interface we miss out that feature bit causing confusion.
For the GPIO test force the mmio bus to support non-legacy so we can
properly test it.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1333
Message-Id: <20221130112439.2527228-2-alex.bennee@linaro.org>
Acked-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2022-12-01 02:29:59 -05:00
Stefan Hajnoczi
c4ffd91aba Update VERSION for v7.2.0-rc3
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-11-29 18:15:26 -05:00
Evgeny Ermakov
475e56b630 target/arm: Set TCGCPUOps.restore_state_to_opc for v7m
This setting got missed, breaking v7m.

Fixes: 56c6c98df8 ("target/arm: Convert to tcg_ops restore_state_to_opc")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1347
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Evgeny Ermakov <evgeny.v.ermakov@gmail.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20221129204146.550394-1-richard.henderson@linaro.org>
2022-11-29 18:15:26 -05:00
Stefan Hajnoczi
7103895123 block-backend: avoid bdrv_unregister_buf() NULL pointer deref
bdrv_*() APIs expect a valid BlockDriverState. Calling them with bs=NULL
leads to undefined behavior.

Jonathan Cameron reported this following NULL pointer dereference when a
VM with a virtio-blk device and a memory-backend-file object is
terminated:
1. qemu_cleanup() closes all drives, setting blk->root to NULL
2. qemu_cleanup() calls user_creatable_cleanup(), which results in a RAM
   block notifier callback because the memory-backend-file is destroyed.
3. blk_unregister_buf() is called by virtio-blk's BlockRamRegistrar
   notifier callback and undefined behavior occurs.

Fixes: baf422684d ("virtio-blk: use BDRV_REQ_REGISTERED_BUF optimization hint")
Co-authored-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20221121211923.1993171-1-stefanha@redhat.com>
2022-11-29 18:15:26 -05:00
Philippe Mathieu-Daudé
86fdb0582c hw/display/qxl: Assert memory slot fits in preallocated MemoryRegion
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20221128202741.4945-6-philmd@linaro.org>
2022-11-29 18:15:26 -05:00
Philippe Mathieu-Daudé
6dbbf05514 hw/display/qxl: Avoid buffer overrun in qxl_phys2virt (CVE-2022-4144)
Have qxl_get_check_slot_offset() return false if the requested
buffer size does not fit within the slot memory region.

Similarly qxl_phys2virt() now returns NULL in such case, and
qxl_dirty_one_surface() aborts.

This avoids buffer overrun in the host pointer returned by
memory_region_get_ram_ptr().

Fixes: CVE-2022-4144 (out-of-bounds read)
Reported-by: Wenxu Yin (@awxylitol)
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1336
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20221128202741.4945-5-philmd@linaro.org>
2022-11-29 18:15:26 -05:00
Philippe Mathieu-Daudé
8efec0ef8b hw/display/qxl: Pass requested buffer size to qxl_phys2virt()
Currently qxl_phys2virt() doesn't check for buffer overrun.
In order to do so in the next commit, pass the buffer size
as argument.

For QXLCursor in qxl_render_cursor() -> qxl_cursor() we
verify the size of the chunked data ahead, checking we can
access 'sizeof(QXLCursor) + chunk->data_size' bytes.
Since in the SPICE_CURSOR_TYPE_MONO case the cursor is
assumed to fit in one chunk, no change are required.
In SPICE_CURSOR_TYPE_ALPHA the ahead read is handled in
qxl_unpack_chunks().

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20221128202741.4945-4-philmd@linaro.org>
2022-11-29 18:15:26 -05:00
Philippe Mathieu-Daudé
b1901de83a hw/display/qxl: Document qxl_phys2virt()
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20221128202741.4945-3-philmd@linaro.org>
2022-11-29 18:15:26 -05:00
Philippe Mathieu-Daudé
61c34fc194 hw/display/qxl: Have qxl_log_command Return early if no log_cmd handler
Only 3 command types are logged: no need to call qxl_phys2virt()
for the other types. Using different cases will help to pass
different structure sizes to qxl_phys2virt() in a pair of commits.

Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20221128202741.4945-2-philmd@linaro.org>
2022-11-29 18:15:26 -05:00
Stefan Hajnoczi
ecbb6bd865 [for-7.2] update seabios to bugfix release 1.16.1
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Merge tag 'seabios-1.16.1-20221128-pull-request' of https://gitlab.com/kraxel/qemu into staging

[for-7.2] update seabios to bugfix release 1.16.1

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* tag 'seabios-1.16.1-20221128-pull-request' of https://gitlab.com/kraxel/qemu:
  update seabios binaries to 1.16.1
  update seabios source from 1.16.0 to 1.16.1

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2022-11-29 11:15:51 -05:00
Richard Henderson
fb72e779eb replay: Fix declaration of replay_read_next_clock
Fixes the build with gcc 13:

replay/replay-time.c:34:6: error: conflicting types for  \
  'replay_read_next_clock' due to enum/integer mismatch; \
  have 'void(ReplayClockKind)' [-Werror=enum-int-mismatch]
   34 | void replay_read_next_clock(ReplayClockKind kind)
      |      ^~~~~~~~~~~~~~~~~~~~~~
In file included from ../qemu/replay/replay-time.c:14:
replay/replay-internal.h:139:6: note: previous declaration of \
  'replay_read_next_clock' with type 'void(unsigned int)'
  139 | void replay_read_next_clock(unsigned int kind);
      |      ^~~~~~~~~~~~~~~~~~~~~~

Fixes: 8eda206e09 ("replay: recording and replaying clock ticks")
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Wilfred Mallawa <wilfred.mallawa@wdc.com>
Reviewed-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20221129010547.284051-1-richard.henderson@linaro.org>
2022-11-29 11:09:11 -05:00
Gerd Hoffmann
a704cb59fd update seabios binaries to 1.16.1
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-11-28 11:06:05 +01:00
Gerd Hoffmann
ab1b2ba9c9 update seabios source from 1.16.0 to 1.16.1
git shortlog rel-1.16.0..rel-1.16.1
===================================

Gerd Hoffmann (3):
      malloc: use variable for ZoneHigh size
      malloc: use large ZoneHigh when there is enough memory
      virtio-blk: use larger default request size

Igor Mammedov (1):
      acpi: parse Alias object

Volker Rümelin (2):
      pci: refactor the pci_config_*() functions
      reset: force standard PCI configuration access

Xiaofei Lee (1):
      virtio-blk: Fix incorrect type conversion in virtio_blk_op()

Xuan Zhuo (2):
      virtio-mmio: read/write the hi 32 features for mmio
      virtio: finalize features before using device

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2022-11-28 10:57:42 +01:00
Stefan Weil via
ac14949821 Add G_GNUC_PRINTF to function qemu_set_info_str and fix related issues
With the G_GNUC_PRINTF function attribute the compiler detects
two potential insecure format strings:

../../../net/stream.c:248:31: warning: format string is not a string literal (potentially insecure) [-Wformat-security]
    qemu_set_info_str(&s->nc, uri);
                              ^~~
../../../net/stream.c:322:31: warning: format string is not a string literal (potentially insecure) [-Wformat-security]
    qemu_set_info_str(&s->nc, uri);
                              ^~~

There are also two other warnings:

../../../net/socket.c:182:35: warning: zero-length gnu_printf format string [-Wformat-zero-length]
  182 |         qemu_set_info_str(&s->nc, "");
      |                                   ^~
../../../net/stream.c:170:35: warning: zero-length gnu_printf format string [-Wformat-zero-length]
  170 |         qemu_set_info_str(&s->nc, "");

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20221126152507.283271-7-sw@weilnetz.de>
2022-11-27 13:36:17 -05:00
Stefan Weil via
ec09f22d01 MAINTAINERS: Add subprojects/libvhost-user to section "vhost"
Signed-off-by: Stefan Weil <sw@weilnetz.de>
[Michael agreed to act as maintainer for libvhost-user via email in
https://lore.kernel.org/qemu-devel/20221123015218-mutt-send-email-mst@kernel.org/.
--Stefan]
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20221126152507.283271-6-sw@weilnetz.de>
2022-11-27 13:34:21 -05:00
Stefan Weil via
52a57d8d1f libvhost-user: Add format attribute to local function vu_panic
Signed-off-by: Stefan Weil <sw@weilnetz.de>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20220422070144.1043697-4-sw@weilnetz.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20221126152507.283271-5-sw@weilnetz.de>
2022-11-27 13:33:58 -05:00