[OpenOCD-commit] Main OpenOCD repository branch, master, updated. v0.12.0-1531-gfcfbbe98b

[openocd-gerrit <ope...@us...>]

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- Log -----------------------------------------------------------------
commit fcfbbe98b2280ddd78da5cca207a8674adf11e85
Author: Marc Schink <de...@za...>
Date:   Sun May 10 12:20:14 2026 +0000

    rtt: Fix reading inactive channels
    
    The current implementation reads the names of inactive channels, which
    can result in invalid data reads, memory access violations, and broken
    output, for example:
    
    > rtt channellist
    [riscv.cpu] Failed to read memory (addr=0x0)
    {
        {
            name  Terminal
            size  0x400
            flags 0x0
        }
    
    Skip reading the names of inactive channels to avoid invalid memory
    reads and broken output.
    
    Change-Id: Iccc029c9ea1787eb361e4fba8119398abf5dafe1
    Signed-off-by: Marc Schink <de...@za...>
    Reviewed-on: https://review.openocd.org/c/openocd/+/9652
    Reviewed-by: Antonio Borneo <bor...@gm...>
    Reviewed-by: Chris Head <ch...@za...>
    Tested-by: jenkins

diff --git a/src/target/rtt.c b/src/target/rtt.c
index 5b7fdda40..0dd82f5c7 100644
--- a/src/target/rtt.c
+++ b/src/target/rtt.c
@@ -339,15 +339,18 @@ int target_rtt_read_channel_info(struct target *target,
 		return ret;
 	}
 
+	info->size = channel.size;
+	info->flags = channel.flags;
+
+	if (!channel_is_active(&channel))
+		return ERROR_OK;
+
 	ret = read_channel_name(target, channel.name_addr, info->name,
 		info->name_length);
 
 	if (ret != ERROR_OK)
 		return ret;
 
-	info->size = channel.size;
-	info->flags = channel.flags;
-
 	return ERROR_OK;
 }
 

-----------------------------------------------------------------------

Summary of changes:
 src/target/rtt.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)


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