$ ./x86_64-softmmu/qemu-system-x86_64 -sandbox off qemu-system-x86_64: -sandbox off: There is no option group 'sandbox' Segmentation fault
Commit 5780760f5e ("seccomp: check TSYNC host capability") wrapped one use of the sandbox option group to produce a sensible error, it didn't do the same for another call to qemu_opts_parse_noisily(): (gdb) bt at util/qemu-option.c:829 #0 0x00000000105b36d8 in opts_parse (list=0x0, params=0x3ffffffffab5 "off", permit_abbrev=true, defaults=false, errp=0x3ffffffff080) at util/qemu-option.c:829 #1 0x00000000105b3b74 in qemu_opts_parse_noisily (list=<optimized out>, params=<optimized out>, permit_abbrev=<optimized out>) at util/qemu-option.c:890 #2 0x0000000010024964 in main (argc=<optimized out>, argv=<optimized out>, envp=<optimized out>) at vl.c:3589 Fixes: 5780760f5ea6163939a5dabe7427318b4f07d1a2 Cc: da...@gibson.dropbear.id.au Cc: ot...@redhat.com Signed-off-by: Marc-André Lureau <marcandre.lur...@redhat.com> --- vl.c | 18 ++++++++++-------- 1 file changed, 10 insertions(+), 8 deletions(-) diff --git a/vl.c b/vl.c index 4019a4387d..5fc4994d3c 100644 --- a/vl.c +++ b/vl.c @@ -3866,17 +3866,19 @@ int main(int argc, char **argv, char **envp) qtest_log = optarg; break; case QEMU_OPTION_sandbox: -#ifdef CONFIG_SECCOMP - opts = qemu_opts_parse_noisily(qemu_find_opts("sandbox"), - optarg, true); + olist = qemu_find_opts("sandbox"); + if (!olist) { +#ifndef CONFIG_SECCOMP + error_report("-sandbox support is not enabled " + "in this QEMU binary"); +#endif + exit(1); + } + + opts = qemu_opts_parse_noisily(olist, optarg, true); if (!opts) { exit(1); } -#else - error_report("-sandbox support is not enabled " - "in this QEMU binary"); - exit(1); -#endif break; case QEMU_OPTION_add_fd: #ifndef _WIN32 -- 2.21.0.777.g83232e3864