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In any of these `*_for_each_*` functions, the last entry in the buffer (so the
"remaining length in the buffer" `len` is equal to the length of the
entry `nlmsg_len`/`nla_len`/etc) has size that is not a multiple of the
alignment, the aligned lengths `*_ALIGN(*_len)` will be greater than `len`.
Since `len` is unsigned (`size_t`), it underflows and the loop will read
pass the buffer.
This may manifest as random EINVAL or EOPNOTSUPP error on IO or network
system calls.
Signed-off-by: Shu-Chun Weng <scw@google.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20191018001920.178283-1-scw@google.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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QEMU_IFLA_BR_MULTI_BOOLOPT has been added to the wrong function
host_to_target_slave_data_bridge_nlattr(). Move it to
host_to_target_data_bridge_nlattr().
This fixes following error:
Unknown QEMU_IFLA_BR type 46
Fixes: 61b463fbf6cb ("linux-user: add new netlink types")
Message-Id: <20190626150855.27446-1-laurent@vivier.eu>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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Add QEMU_IFLA_BR_VLAN_STATS_PER_PORT (from linux v4.20),
QEMU_IFLA_BR_MULTI_BOOLOPT (from linux v5.0).
The first new entry fixes the following error:
Unknown QEMU_IFLA_BR type 45
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190306200925.17605-1-laurent@vivier.eu>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
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Add QEMU_IFLA_MIN_MTU, QEMU_IFLA_MAX_MTU (from linux v4.19)
QEMU_IFLA_BRPORT_ISOLATED (from linux v4.18) and
QEMU_IFLA_BRPORT_BACKUP_PORT (from linux v4.19).
These new types fix this error flow with sudo:
...
Unknown host QEMU_IFLA type: 50
Unknown host QEMU_IFLA type: 51
Unknown QEMU_IFLA_BRPORT type 33
...
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20190206193211.6683-1-laurent@vivier.eu>
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This will ease to move out syscall functions from syscall.c
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180823222215.13781-1-laurent@vivier.eu>
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