In qemu we catch accesses to files like /proc/cpuinfo or /proc/net/route
and return to the guest contents which would be visible on a real system
(instead what the host would show).
This patch fixes a bug, where for example the accesses
cat /proc////cpuinfo
or
cd /proc && cat cpuinfo
will not be recognized by qemu and where qemu will wrongly show
the contents of the host's /proc/cpuinfo file.
Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230803214450.647040-2-deller@gmx.de>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Fix a crash in qemu-user when running
cat /proc/self/maps
in a chroot, where /proc isn't mounted.
The problem was introduced by commit 3ce3dd8ca9 ("util/selfmap:
Rewrite using qemu/interval-tree.h") where in open_self_maps_1() the
function read_self_maps() is called and which returns NULL if it can't
read the hosts /proc/self/maps file. Afterwards that NULL is fed into
interval_tree_iter_first() which doesn't check if the root node is NULL.
Fix it by adding a check if root is NULL and return NULL in that case.
Signed-off-by: Helge Deller <deller@gmx.de>
Fixes: 3ce3dd8ca9 ("util/selfmap: Rewrite using qemu/interval-tree.h")
Message-Id: <ZNOsq6Z7t/eyIG/9@p100>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This test fails when host page size != guest page size,
because qemu may not be able to directly map the file.
Fixes: a634148269 ("tests/tcg: Add a test for info proc mappings")
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Rather than using a zero tuple to end the table, use a macro
to apply ARRAY_SIZE and pass that on to the convert functions.
This fixes two bugs in which the conversion functions required
that both the target and host masks be non-zero in order to
continue, rather than require both target and host masks be
zero in order to terminate.
This affected mmap_flags_tbl when the host does not support
all of the flags we wish to convert (e.g. MAP_UNINITIALIZED).
Mapping these flags to zero is good enough, and matches how
the kernel ignores bits that are unknown.
Fixes: 4b840f96 ("linux-user: Populate more bits in mmap_flags_tbl")
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
New function that rejects unsupported map types and flags.
In 4b840f96 we should not have accepted MAP_SHARED_VALIDATE
without actually validating the rest of the flags.
Fixes: 4b840f96 ("linux-user: Populate more bits in mmap_flags_tbl")
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The Reclaim Unit Update operation in I/O Management Receive does not
verify the presence of a configured endurance group prior to accessing
it.
Fix this.
Cc: qemu-stable@nongnu.org
Fixes: 73064edfb8 ("hw/nvme: flexible data placement emulation")
Reviewed-by: Jesper Wendel Devantier <j.devantier@samsung.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
nvme_directive_receive() does not check if an endurance group has been
configured (set) prior to testing if flexible data placement is enabled
or not.
Fix this.
Cc: qemu-stable@nongnu.org
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1815
Fixes: 73064edfb8 ("hw/nvme: flexible data placement emulation")
Reviewed-by: Jesper Wendel Devantier <j.devantier@samsung.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
In order for our emulation of MAP_FIXED_NOREPLACE to succeed within
linux-user target_mmap, we require a non-zero value. This does not
require host kernel support, merely the bit being defined.
MAP_FIXED_NOREPLACE was added with glibc 2.28. From repology.org:
Fedora 36: 2.35
CentOS 8 (RHEL-8): 2.28
Debian 11: 2.31
OpenSUSE Leap 15.4: 2.31
Ubuntu LTS 20.04: 2.31
Reported-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20230808164418.69989-1-richard.henderson@linaro.org>
linux-user: Do not adjust image mapping for host page size
linux-user: Adjust initial brk when interpreter is close to executable
util/selfmap: Rewrite using qemu/interval-tree.h
linux-user: Rewrite probe_guest_base
-----BEGIN PGP SIGNATURE-----
iQFRBAABCgA7FiEEekgeeIaLTbaoWgXAZN846K9+IV8FAmTSrp4dHHJpY2hhcmQu
aGVuZGVyc29uQGxpbmFyby5vcmcACgkQZN846K9+IV9lTQf/W/Tbd6CFnZpVE8Sb
BPrhdmo+x6Jftt1Ha66b/4xnasX7DuVaI1ECDh4CQQKIOh9A4LETx6ue9/UGi4vT
Fe4UrrJcAjt/CPaZhwXniJM9CvEnw1gkl3AgKAtZOBEConuPnkTiSWjySmCt3T4r
EGQxDe0HLpWYavNtvyywak/sEbwOD4hNAunFpJB6PLZ+KEoCDZwtcQdl55kg5bIt
WBMgUSXnWhC45t+26OcSDeHovqxHoA647H10T0y0U6bNVkW0tRW51xCTvHt+iDyR
s8UOCe1Q+w8F18fN68HIWBJ6NCzUts/AmQrWwc/MWiK1z91/ht5mlKAuNYnoZ6jH
htCSEA==
=ERAI
-----END PGP SIGNATURE-----
Merge tag 'pull-lu-20230808' of https://gitlab.com/rth7680/qemu into staging
linux-user: Adjust guest image layout vs reserved_va
linux-user: Do not adjust image mapping for host page size
linux-user: Adjust initial brk when interpreter is close to executable
util/selfmap: Rewrite using qemu/interval-tree.h
linux-user: Rewrite probe_guest_base
# -----BEGIN PGP SIGNATURE-----
#
# iQFRBAABCgA7FiEEekgeeIaLTbaoWgXAZN846K9+IV8FAmTSrp4dHHJpY2hhcmQu
# aGVuZGVyc29uQGxpbmFyby5vcmcACgkQZN846K9+IV9lTQf/W/Tbd6CFnZpVE8Sb
# BPrhdmo+x6Jftt1Ha66b/4xnasX7DuVaI1ECDh4CQQKIOh9A4LETx6ue9/UGi4vT
# Fe4UrrJcAjt/CPaZhwXniJM9CvEnw1gkl3AgKAtZOBEConuPnkTiSWjySmCt3T4r
# EGQxDe0HLpWYavNtvyywak/sEbwOD4hNAunFpJB6PLZ+KEoCDZwtcQdl55kg5bIt
# WBMgUSXnWhC45t+26OcSDeHovqxHoA647H10T0y0U6bNVkW0tRW51xCTvHt+iDyR
# s8UOCe1Q+w8F18fN68HIWBJ6NCzUts/AmQrWwc/MWiK1z91/ht5mlKAuNYnoZ6jH
# htCSEA==
# =ERAI
# -----END PGP SIGNATURE-----
# gpg: Signature made Tue 08 Aug 2023 02:07:42 PM PDT
# gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg: issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [ultimate]
* tag 'pull-lu-20230808' of https://gitlab.com/rth7680/qemu:
linux-user: Rewrite non-fixed probe_guest_base
linux-user: Rewrite fixed probe_guest_base
linux-user: Consolidate guest bounds check in probe_guest_base
linux-user: Remove duplicate CPU_LOG_PAGE from probe_guest_base
util/selfmap: Rewrite using qemu/interval-tree.h
linux-user: Use zero_bss for PT_LOAD with no file contents too
linux-user: Do not adjust zero_bss for host page size
linux-user: Do not adjust image mapping for host page size
linux-user: Adjust initial brk when interpreter is close to executable
linux-user: Use elf_et_dyn_base for ET_DYN with interpreter
linux-user: Use MAP_FIXED_NOREPLACE for initial image mmap
linux-user: Define ELF_ET_DYN_BASE in $guest/target_mman.h
linux-user: Define TASK_UNMAPPED_BASE in $guest/target_mman.h
linux-user: Adjust task_unmapped_base for reserved_va
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Use pgb_addr_set to probe for all of the guest addresses,
not just the main executable. Handle the identity map
specially and separately from the search.
If /proc/self/maps is available, utilize the full power
of the interval tree search, rather than a linear search
through the address list.
If /proc/self/maps is not available, increase the skip
between probes so that we do not probe every single page
of the host address space. Choose 1 MiB for 32-bit hosts
(max 4k probes) and 1 GiB for 64-bit hosts (possibly a
large number of probes, but the large step makes it more
likely to find empty space quicker).
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Create a set of subroutines to collect a set of guest addresses,
all of which must be mappable on the host. Use this within the
renamed pgb_fixed subroutine to validate the user's choice of
guest_base specified by the -B command-line option.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The three sets of checks are identical, logically.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The proper logging for probe_guest_base is in the main function.
There is no need to duplicate that in the subroutines.
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
We will want to be able to search the set of mappings.
For this patch, the two users iterate the tree in order.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
If p_filesz == 0, then vaddr_ef == vaddr. We can reuse the
code in zero_bss rather than incompletely duplicating it in
load_elf_image.
Tested-by: Helge Deller <deller@gmx.de>
Reviewed-by: Helge Deller <deller@gmx.de>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Remove TARGET_ELF_EXEC_PAGESIZE, and 3 other TARGET_ELF_PAGE* macros
based off of that. Rely on target_mmap to handle guest vs host page
size mismatch.
Tested-by: Helge Deller <deller@gmx.de>
Reviewed-by: Helge Deller <deller@gmx.de>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
While we attempt to load a ET_DYN executable far away from
TASK_UNMAPPED_BASE, we are not completely in control of the
address space layout. If the interpreter lands close to
the executable, leaving insufficient heap space, move brk.
Tested-by: Helge Deller <deller@gmx.de>
Signed-off-by: Helge Deller <deller@gmx.de>
[rth: Re-order after ELF_ET_DYN_BASE patch so that we do not
"temporarily break" tsan, and also to minimize the changes required.
Remove image_info.reserve_brk as unused.]
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Follow the lead of the linux kernel in fs/binfmt_elf.c,
in which an ET_DYN executable which uses an interpreter
(usually a PIE executable) is loaded away from where the
interpreter itself will be loaded.
Tested-by: Helge Deller <deller@gmx.de>
Reviewed-by: Helge Deller <deller@gmx.de>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Use this as extra protection for the guest mapping over
any qemu host mappings.
Tested-by: Helge Deller <deller@gmx.de>
Reviewed-by: Helge Deller <deller@gmx.de>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Copy each guest kernel's default value, then bound it
against reserved_va or the host address space.
Tested-by: Helge Deller <deller@gmx.de>
Reviewed-by: Helge Deller <deller@gmx.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Provide default values that are as close as possible to the
values used by the guest's kernel.
Tested-by: Helge Deller <deller@gmx.de>
Reviewed-by: Helge Deller <deller@gmx.de>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Ensure that the chosen values for mmap_next_start and
task_unmapped_base are within the guest address space.
Tested-by: Helge Deller <deller@gmx.de>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The CPU model has to be canonicalized to what Meson wants in the cross
file, to what Linux uses for its asm-$ARCH directories, and to what
QEMU uses for its user-mode emulation host/$ARCH directories. Do
all three in a single case statement, and check that the Linux and
QEMU directories actually exist.
At a small cost in repeated lines, this ensures that there are no hidden
ordering requirements between the case statements. In particular, commit
89e5b7935e ("configure: Fix linux-user host detection for riscv64",
2023-08-06) broke ppc64le because it assigned host_arch based on a
non-canonicalized version of $cpu.
Reported-by: Joel Stanley <joel@jms.id.au>
Fixes: 89e5b7935e ("configure: Fix linux-user host detection for riscv64", 2023-08-06)
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Tested-by: Ilya Leoshkevich <iii@linux.ibm.com>
Tested-by: Michael Tokarev <mjt@tls.msk.ru>
Message-ID: <20230808120303.585509-4-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Alpha and 31-bit s390 lack the assembly fragment to handle signals
occurring at the same time as system calls, so they cannot run
linux-user emulation anymore. Drop the host-signal.h files for
them.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Tested-by: Ilya Leoshkevich <iii@linux.ibm.com>
Tested-by: Michael Tokarev <mjt@tls.msk.ru>
Message-ID: <20230808120303.585509-3-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
x32 uses the same signal handling fragments as x86_64, since host_arch
is set to x86_64 when Meson runs. Remove the unnecessary forwarder and
set the host_arch variable properly in configure.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Tested-by: Ilya Leoshkevich <iii@linux.ibm.com>
Tested-by: Michael Tokarev <mjt@tls.msk.ru>
Message-ID: <20230808120303.585509-2-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add missing entry for pif ("protection information format").
Protection information size can be 8 or 16 bytes, Update the pil entry
as per the NVM command set specification.
Signed-off-by: Ankit Kumar <ankit.kumar@samsung.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
The nvme CRC64 generator expects the caller to pass inverted seed value.
Pass inverted crc value for metadata buffer.
Cc: qemu-stable@nongnu.org
Fixes: 44219b6029 ("hw/nvme: 64-bit pi support")
Signed-off-by: Ankit Kumar <ankit.kumar@samsung.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Hi,
Here is a collection of ui, dump and chardev fixes that are worth for 8.1.
thanks
-----BEGIN PGP SIGNATURE-----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=ANQg
-----END PGP SIGNATURE-----
Merge tag 'fixes-pull-request' of https://gitlab.com/marcandre.lureau/qemu into staging
Fixes for 8.1
Hi,
Here is a collection of ui, dump and chardev fixes that are worth for 8.1.
thanks
# -----BEGIN PGP SIGNATURE-----
#
# iQJQBAABCAA6FiEEh6m9kz+HxgbSdvYt2ujhCXWWnOUFAmTRWDscHG1hcmNhbmRy
# ZS5sdXJlYXVAcmVkaGF0LmNvbQAKCRDa6OEJdZac5eUrD/9BvqJ87XSKchV01jji
# PmA+yFyI0JSG68oYbNPYJXxkLWdRCKp6GGcT8h1yiVtGH/SVey9spxDqbV+sK0uW
# FmqIcmSBbjI4A6+Mne07Iyd0QtgL9H6YNenRXDFLIXLh84HP47Dg9vfgx4AsRY7O
# efcCdi43/PoJOelVfn9wIkP/8DU4pZV6IsdtdUxZ3rtu/zwjW61rLzuxtLcAoCIE
# rAYiTp699NH5fKBbMzm3puK4hpaPLj4GuGPrSaWVSCcgARqi7LWpgZC5i+a6FUfS
# eWzK8WkdvHIPaUPRNl70LTWPKVxJ4PdSxFlIKgiH0bnpXHBvJnO2y1v4jaiGI0y2
# WSHKJWY513zTF4B+pMdQLjNiLotkiqtAXHw5rrjPTuVHxi1N5w6Z/BvWOSAvs8V6
# ijYmjksNoqwfpbPRTyu8psLcmj3fo2UIjQ739PgLN2lfC8d+nzdx4PIIq/ybQdZZ
# 7QBJGhxP33Ou8c3ok43Jz3go6w0WOKM0ucG1K1iTVxQ27leMKTO5Zsm2TShG2pMG
# CY6d/dumID8+G7sho8TmtTDjC5ZBkY5e27etkS+P4p+Buc60lqDrL+u6UadxWNZ1
# 3ifsQ1PhVTRuhZUJNMcX1Qo3PuEfAOH1ZuCbvXpubHwcUr4o/ZqlVrMaJtYB3ueo
# 7SX8YistmktaEeN+Y50qoiEVgg==
# =ANQg
# -----END PGP SIGNATURE-----
# gpg: Signature made Mon 07 Aug 2023 01:46:51 PM PDT
# 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]
* tag 'fixes-pull-request' of https://gitlab.com/marcandre.lureau/qemu:
ui/gtk: set scanout mode in gd_egl/gd_gl_area_scanout_texture
hw/i386/vmmouse:add relative packet flag for button status
dump: kdump-zlib data pages not dumped with pvtime/aarch64
virtio-gpu: reset gfx resources in main thread
virtio-gpu: free BHs, by implementing unrealize
chardev: report the handshake error
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Fixing a regression (black screen) caused by a commit 92b58156e7
("ui/gtk: set scanout-mode right before scheduling draw").
The commit 92b58156e7 was made with an assumption that the scanout
mode needs to be set only if the guest scanout is a dmabuf but there
are cases (e.g. virtio-gpu-virgl) where the scanout is still processed
in a form of a texture but is not backed by dmabuf. So it is needed
to put back the line that sets scanout mode in gd_egl_scanout_texture
and gd_gl_area_scanout_texture.
Fixes: 92b58156e7 ("ui/gtk: set scanout-mode right before scheduling draw)
Reported-by: Volker Rümelin <vr_qemu@t-online.de>
Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Cc: Vivek Kasireddy <vivek.kasireddy@intel.com>
Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20230725001131.24017-1-dongwon.kim@intel.com>
The buttons value use macros instead of direct numbers.
If request relative mode, have to add this for
guest vmmouse driver to judge this is a relative packet.
otherwise,vmmouse driver will not match
the condition 'status & VMMOUSE_RELATIVE_PACKET',
and can't report events on the correct(relative) input device,
result to relative mode unuseful.
Signed-off-by: Zongmin Zhou<zhouzongmin@kylinos.cn>
Message-ID: <20230413081526.2229916-1-zhouzongmin@kylinos.cn>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
The kdump-zlib data pages are not dumped from aarch64 host when the
'pvtime' is involved, that is, when the block->target_end is not aligned to
page_size. In the below example, it is expected to dump two blocks.
(qemu) info mtree -f
... ...
00000000090a0000-00000000090a0fff (prio 0, ram): pvtime KVM
... ...
0000000040000000-00000001bfffffff (prio 0, ram): mach-virt.ram KVM
... ...
However, there is an issue with get_next_page() so that the pages for
"mach-virt.ram" will not be dumped.
At line 1296, although we have reached at the end of the 'pvtime' block,
since it is not aligned to the page_size (e.g., 0x10000), it will not break
at line 1298.
1255 static bool get_next_page(GuestPhysBlock **blockptr, uint64_t *pfnptr,
1256 uint8_t **bufptr, DumpState *s)
... ...
1294 memcpy(buf + addr % page_size, hbuf, n);
1295 addr += n;
1296 if (addr % page_size == 0) {
1297 /* we filled up the page */
1298 break;
1299 }
As a result, get_next_page() will continue to the next
block ("mach-virt.ram"). Finally, when get_next_page() returns to the
caller:
- 'pfnptr' is referring to the 'pvtime'
- but 'blockptr' is referring to the "mach-virt.ram"
When get_next_page() is called the next time, "*pfnptr += 1" still refers
to the prior 'pvtime'. It will exit immediately because it is out of the
range of the current "mach-virt.ram".
The fix is to break when it is time to come to the next block, so that both
'pfnptr' and 'blockptr' refer to the same block.
Fixes: 94d788408d ("dump: fix kdump to work over non-aligned blocks")
Cc: Joe Jin <joe.jin@oracle.com>
Signed-off-by: Dongli Zhang <dongli.zhang@oracle.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-ID: <20230713055819.30497-1-dongli.zhang@oracle.com>
Calling OpenGL from different threads can have bad consequences if not
carefully reviewed. It's not generally supported. In my case, I was
debugging a crash in glDeleteTextures from OPENGL32.DLL, where I asked
qemu for gl=es, and thus ANGLE implementation was expected. libepoxy did
resolution of the global pointer for glGenTexture to the GLES version
from the main thread. But it resolved glDeleteTextures to the GL
version, because it was done from a different thread without correct
context. Oops.
Let's stick to the main thread for GL calls by using a BH.
Note: I didn't use atomics for reset_finished check, assuming the BQL
will provide enough of sync, but I might be wrong.
Acked-by: Dongwon Kim <dongwon.kim@intel.com>
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20230726173929.690601-3-marcandre.lureau@redhat.com>
This can help to debug connection issues.
Related to:
https://bugzilla.redhat.com/show_bug.cgi?id=2196182
Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Message-Id: <20230510072531.3937189-1-marcandre.lureau@redhat.com>
OpenRISC (or1k) has long long alignment to 4 bytes, but currently not
defined in abitypes.h. This lead to incorrect packing of /epoll_event/
structure and eventually infinite loop while waiting for file
descriptor[s] event[s].
Fixed also CRIS alignments (1 byte for all types).
Signed-off-by: Luca Bonissi <qemu@bonslack.org>
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1770
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
The clock and data values were logged swapped. Correct the trace event
text to match what is logged. Also fix a typo in a comment nearby.
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
As of prior to this patch, the controller checks the value of CC.IOCQES
and CC.IOSQES prior to enabling the controller. As reported by Ben in
GitLab issue #1691, this is not spec compliant. The controller should
only check these values when queues are created.
This patch moves these checks to nvme_create_cq(). We do not need to
check it in nvme_create_sq() since that will error out if the completion
queue is not already created.
Also, since the controller exclusively supports SQEs of size 64 bytes
and CQEs of size 16 bytes, hard code that.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1691
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
As reported by Trend Micro's Zero Day Initiative, an oob memory read
vulnerability exists in nvme_fdp_events(). The host-provided offset is
not verified.
Fix this.
This is only exploitable when Flexible Data Placement mode (fdp=on) is
enabled.
Fixes: CVE-2023-4135
Fixes: 73064edfb8 ("hw/nvme: flexible data placement emulation")
Reported-by: Trend Micro's Zero Day Initiative
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
accel/tcg: Call save_iotlb_data from io_readx
gdbstub: use 0 ("any process") on packets with no PID
linux-user: Fixes for MAP_FIXED_NOREPLACE
linux-user: Fixes for brk
linux-user: Set V in ELF_HWCAP for RISC-V
*-user: Remove last_brk as unused
-----BEGIN PGP SIGNATURE-----
iQFRBAABCgA7FiEEekgeeIaLTbaoWgXAZN846K9+IV8FAmTQMPsdHHJpY2hhcmQu
aGVuZGVyc29uQGxpbmFyby5vcmcACgkQZN846K9+IV/rmQf/az6d6X4iom0Hch19
U4BkoNP7NQB2Rue/avjP6Vy6yATDEPgIA5vcPcub+jYsCyEasRRCD1d4odxZp7Cr
MLoeX6dC+iGg0N7i3S1DSpZBqsRv/4+YE5ibPjYnZlv0F7re1L89yw4doj5OPN1w
1p8bpTxA2+s/FOxgfKLSyZR4yMJ4jWKeH+em6qjEBXEAMSiE6u0S+Kt3bAO8amdo
86e5d16F4sjs4kXMTEp9myNoXN/aRsWd1stzebQK+uV6qQQsdkIkMLZmZ8+o158A
QEuWpV8yoMxhXUsnjkNGbL5S3r2WDJpM6WbWxtjs1xOAaygYCOicXh+sqRefgyH/
0NQQRw==
=4I5/
-----END PGP SIGNATURE-----
Merge tag 'pull-tcg-20230806-3' of https://gitlab.com/rth7680/qemu into staging
accel/tcg: Do not issue misaligned i/o
accel/tcg: Call save_iotlb_data from io_readx
gdbstub: use 0 ("any process") on packets with no PID
linux-user: Fixes for MAP_FIXED_NOREPLACE
linux-user: Fixes for brk
linux-user: Set V in ELF_HWCAP for RISC-V
*-user: Remove last_brk as unused
# -----BEGIN PGP SIGNATURE-----
#
# iQFRBAABCgA7FiEEekgeeIaLTbaoWgXAZN846K9+IV8FAmTQMPsdHHJpY2hhcmQu
# aGVuZGVyc29uQGxpbmFyby5vcmcACgkQZN846K9+IV/rmQf/az6d6X4iom0Hch19
# U4BkoNP7NQB2Rue/avjP6Vy6yATDEPgIA5vcPcub+jYsCyEasRRCD1d4odxZp7Cr
# MLoeX6dC+iGg0N7i3S1DSpZBqsRv/4+YE5ibPjYnZlv0F7re1L89yw4doj5OPN1w
# 1p8bpTxA2+s/FOxgfKLSyZR4yMJ4jWKeH+em6qjEBXEAMSiE6u0S+Kt3bAO8amdo
# 86e5d16F4sjs4kXMTEp9myNoXN/aRsWd1stzebQK+uV6qQQsdkIkMLZmZ8+o158A
# QEuWpV8yoMxhXUsnjkNGbL5S3r2WDJpM6WbWxtjs1xOAaygYCOicXh+sqRefgyH/
# 0NQQRw==
# =4I5/
# -----END PGP SIGNATURE-----
# gpg: Signature made Sun 06 Aug 2023 04:47:07 PM PDT
# gpg: using RSA key 7A481E78868B4DB6A85A05C064DF38E8AF7E215F
# gpg: issuer "richard.henderson@linaro.org"
# gpg: Good signature from "Richard Henderson <richard.henderson@linaro.org>" [ultimate]
* tag 'pull-tcg-20230806-3' of https://gitlab.com/rth7680/qemu:
bsd-user: Remove last_brk
linux-user: Remove last_brk
linux-user: Properly set image_info.brk in flatload
linux-user: Do not align brk with host page size
linux-user: Do nothing if too small brk is specified
linux-user: Use MAP_FIXED_NOREPLACE for do_brk()
linux-user: Do not call get_errno() in do_brk()
linux-user: Fix MAP_FIXED_NOREPLACE on old kernels
linux-user: Unset MAP_FIXED_NOREPLACE for host
linux-user/elfload: Set V in ELF_HWCAP for RISC-V
configure: Fix linux-user host detection for riscv64
gdbstub: use 0 ("any process") on packets with no PID
accel/tcg: Call save_iotlb_data from io_readx as well
accel/tcg: Do not issue misaligned i/o
accel/tcg: Issue wider aligned i/o in do_{ld,st}_mmio_*
accel/tcg: Adjust parameters and locking with do_{ld,st}_mmio_*
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The heap starts at "brk" not "start_brk". With this fixed,
image_info.start_brk is unused and may be removed.
Tested-by: Helge Deller <deller@gmx.de>
Reviewed-by: Helge Deller <deller@gmx.de>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
do_brk() minimizes calls into target_mmap() by aligning the address
with host page size, which is potentially larger than the target page
size. However, the current implementation of this optimization has two
bugs:
- The start of brk is rounded up with the host page size while brk
advertises an address aligned with the target page size as the
beginning of brk. This makes the beginning of brk unmapped.
- Content clearing after mapping is flawed. The size to clear is
specified as HOST_PAGE_ALIGN(brk_page) - brk_page, but brk_page is
aligned with the host page size so it is always zero.
This optimization actually has no practical benefit. It makes difference
when brk() is called multiple times with values in a range of the host
page size. However, sophisticated memory allocators try to avoid to
make such frequent brk() calls. For example, glibc 2.37 calls brk() to
shrink the heap only when there is a room more than 128 KiB. It is
rare to have a page size larger than 128 KiB if it happens.
Let's remove the optimization to fix the bugs and make the code simpler.
Fixes: 86f04735ac ("linux-user: Fix brk() to release pages")
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1616
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20230802071754.14876-7-akihiko.odaki@daynix.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Linux 6.4.7 does nothing when a value smaller than the initial brk is
specified.
Fixes: 86f04735ac ("linux-user: Fix brk() to release pages")
Reviewed-by: Helge Deller <deller@gmx.de>
Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20230802071754.14876-6-akihiko.odaki@daynix.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
