While debugging on Ubuntu, I found it's not easy to deal with coroutine functions, but on RH works well. Could anyone tell me how to solve the problem? Thanks.
The following is output on my ubuntu: $ gdb qemu-io GNU gdb (Ubuntu/Linaro 7.4-2012.04-0ubuntu1) 7.4-2012.04 Copyright (C) 2012 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html > This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "i686-linux-gnu". For bug reporting instructions, please see: <http://bugs.launchpad.net/gdb-linaro/>... Reading symbols from /usr/bin/qemu-io...done. (gdb) set args -c "read -v 0 512" ubuntu.qcow2 (gdb) break qcow2_co_readv Breakpoint 1 at 0x27bc9: file block/qcow2.c, line 517. (gdb) r Starting program: /usr/bin/qemu-io -c "read -v 0 512" ubuntu.qcow2 [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/i386-linux-gnu/libthread_db.so.1". [New Thread 0xb7babb40 (LWP 15993)] Breakpoint 1, qcow2_co_readv (bs=0x80492508, sector_num=0, remaining_sectors=1, qiov=0xbfffeea0) at block/qcow2.c:517 517 { (gdb) n 518 BDRVQcowState *s = bs->opaque; (gdb) 522 uint64_t cluster_offset = 0; (gdb) 523 uint64_t bytes_done = 0; (gdb) 525 uint8_t *cluster_data = NULL; (gdb) 527 qemu_iovec_init(&hd_qiov, qiov->niov); (gdb) 529 qemu_co_mutex_lock(&s->lock); (gdb) 531 while (remaining_sectors != 0) { (gdb) 534 cur_nr_sectors = remaining_sectors; (gdb) 535 if (s->crypt_method) { (gdb) 540 ret = qcow2_get_cluster_offset(bs, sector_num << 9, (gdb) Warning: Cannot insert breakpoint 0. Error accessing memory address 0x10114498: Input/output error. 0xb7e9d3a1 in longjmp (env=0x804939b0, val=1) at ../nptl/sysdeps/pthread/pt-longjmp.c:26 26 ../nptl/sysdeps/pthread/pt-longjmp.c: No such file or directory. (gdb) How can I skip the error report here?
