On 10/30/2026 3:21 PM, Pierrick Bouvier wrote: > From: Justin Sapp <[email protected]> > > https://sourceware.org/gdb/current/onlinedocs/gdb.html/General-Query-Packets.html#qSupported > ``` > Whenever the stub receives a ‘qSupported’ request, the supplied set > of GDB features should override any previous request. This allows GDB to > put the stub in a known state, even if the stub had previously been > communicating with a different version of GDB. > ``` > > We exposed this by connecting to gdbstub using a gdb client first, and > then WinDbg (EXDI) for windows kernel debugging. Since they both > differ in their multiprocess support, this was confusing EXDI. > > While we are here, fix the same for fork_events in user mode. > > Signed-off-by: Pierrick Bouvier <[email protected]> > --- > gdbstub/gdbstub.c | 6 ++++++ > gdbstub/user.c | 1 + > 2 files changed, 7 insertions(+) > > diff --git a/gdbstub/gdbstub.c b/gdbstub/gdbstub.c > index 0a328b0dd48..dbb2000c817 100644 > --- a/gdbstub/gdbstub.c > +++ b/gdbstub/gdbstub.c > @@ -1679,6 +1679,12 @@ void gdb_extend_qsupported_features(char *qflags) > > static void handle_query_supported(GArray *params, void *user_ctx) > { > + /* > + * Reset multiprocess support as a new gdb client may have different > support > + * than a previous one. > + */ > + gdbserver_state.multiprocess = false; > + > g_string_printf(gdbserver_state.str_buf, "PacketSize=%x", > MAX_PACKET_LENGTH); > if (gdb_get_core_xml_file(first_cpu)) { > g_string_append(gdbserver_state.str_buf, ";qXfer:features:read+"); > diff --git a/gdbstub/user.c b/gdbstub/user.c > index d810f0f38c3..9b6d42d210a 100644 > --- a/gdbstub/user.c > +++ b/gdbstub/user.c > @@ -701,6 +701,7 @@ fail: > > void gdb_handle_query_supported_user(const char *gdb_supported) > { > + gdbserver_user_state.fork_events = false; > if (strstr(gdb_supported, "fork-events+")) { > gdbserver_user_state.fork_events = true; > }
Ping on this patch. @Alex: I noticed you have an 11.2 series going on, this could be nice if we had a chance to add this patch there also. Regards, Pierrick
