The max length of debugfs argument is 256 which is too short, the arguments are two paths, the PATH_MAX is 4096 according to /usr/include/linux/limits.h, use 2048 (4096 / 2) is a reasonable value. Signed-off-by: Robert Yang <liezhi.yang@xxxxxxxxxxxxx> Acked-by: Darren Hart <dvhart@xxxxxxxxxxxxxxx> --- debugfs/debugfs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/debugfs/debugfs.c b/debugfs/debugfs.c index dcf16e2..b77d0b5 100644 --- a/debugfs/debugfs.c +++ b/debugfs/debugfs.c @@ -2300,7 +2300,7 @@ void do_dump_mmp(int argc EXT2FS_ATTR((unused)), char *argv[]) static int source_file(const char *cmd_file, int ss_idx) { FILE *f; - char buf[256]; + char buf[2048]; char *cp; int exit_status = 0; int retval; -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html