If a request to switch to RATP mode is received in an input-only console, ignore the request. This actually also avoids segfaulting later on: #0 0x0000000000000000 in ?? () #1 0x000000000040b2a4 in console_send (r=<optimized out>, pkt=0x7fffffffd8ec, len=4) at common/ratp.c:102 #2 0x000000000042ab99 in ratp_behaviour_a (pkt=0x7ffff7298780, ri=0x7ffff72766d0) at lib/ratp.c:530 #3 ratp_state_machine (pkt=0x7ffff7298780, ri=0x7ffff72766d0) at lib/ratp.c:1384 #4 ratp_poll (ratp=0x7ffff7277ed8) at lib/ratp.c:1561 #5 0x000000000042b2ab in ratp_establish (ratp=ratp@entry=0x7ffff7277ed8, active=active@entry=false, timeout_ms=timeout_ms@entry=100) at lib/ratp.c:1645 #6 0x000000000040b888 in barebox_ratp (cdev=cdev@entry=0x7ffff7212bd0) at common/ratp.c:470 #7 0x00000000004046c3 in getc_raw () at common/console.c:416 ... Signed-off-by: Aleksander Morgado <aleksander@xxxxxxxxxxxxx> --- Hey Sascha, Looks like I may actually need to update the options to allow setting up bidirectional consoles, instead of separate input/output ones. Otherwise I won't be able to use RATP over the FIFO-based console. This patch fixes a segfault happening in barebox sandbox when the input-only console receives a request to switch to RATP mode, it ends up crashing afterwards when the SYN/ACK response is to be sent via the non-existent output path. Cheers! --- common/console.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/common/console.c b/common/console.c index f4c799fa5..f8677659e 100644 --- a/common/console.c +++ b/common/console.c @@ -412,7 +412,9 @@ static int getc_raw(void) if (cdev->tstc(cdev)) { int ch = cdev->getc(cdev); - if (IS_ENABLED(CONFIG_RATP) && ch == 0x01) { + if (IS_ENABLED(CONFIG_RATP) && + ch == 0x01 && + (cdev->f_active & CONSOLE_STDOUT)) { barebox_ratp(cdev); return -1; } -- 2.13.0 _______________________________________________ barebox mailing list barebox@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/barebox