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microvm: fix memory leak in microvm_fix_kernel_cmdline

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In microvm_fix_kernel_cmdline(), fw_cfg_modify_string() is duplicating
cmdline instead of taking ownership of it. Free it afterwards to avoid
leaking it.

Reported-by: Coverity (CID 1407218)
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Sergio Lopez <slp@redhat.com>
Message-Id: <20191112163423.91884-1-slp@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sergio Lopez 2019-11-12 17:34:23 +01:00 committed by Paolo Bonzini
parent b73f059cf2
commit c3157b74c4
1 changed files with 2 additions and 0 deletions
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hw/i386/microvm.c
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@ -331,6 +331,8 @@ static void microvm_fix_kernel_cmdline(MachineState *machine)
fw_cfg_modify_i32(x86ms->fw_cfg, FW_CFG_CMDLINE_SIZE, strlen(cmdline) + 1);
fw_cfg_modify_string(x86ms->fw_cfg, FW_CFG_CMDLINE_DATA, cmdline);
g_free(cmdline);
}
static void microvm_machine_state_init(MachineState *machine)