I noticed that on newer kernels, the "dev -d" command is failing.
Seems like the 'rq' field in the request_queue structure is now
called 'root_rl'.
The little change in the patch below seems to fix this problem,
at least for me on i686 & x86_64. (I was using crash 6.1.4.)
crash> dev -d
MAJOR GENDISK NAME REQUEST QUEUE TOTAL ASYNC SYNC DRV
dev: invalid structure member offset: request_queue_rq
FILE: dev.c LINE: 3807 FUNCTION: get_diskio_1()
[/sbin/crash] error trace: 45dd17 => 4d6432 => 4d5eba => 4ff0fd
4ff0fd: OFFSET_verify+189
4d5eba: get_diskio_1+58
4d6432: display_all_diskio+1090
45dd17: exec_command+919
dev: invalid structure member offset: request_queue_rq
FILE: dev.c LINE: 3807 FUNCTION: get_diskio_1()
Index: b/dev.c
===================================================================
--- a/dev.c
+++ b/dev.c
@@ -4051,6 +4051,9 @@ void diskio_init(void)
MEMBER_OFFSET_INIT(request_queue_in_flight, "request_queue",
"in_flight");
MEMBER_OFFSET_INIT(request_queue_rq, "request_queue", "rq");
+ if (INVALID_MEMBER(request_queue_rq))
+ MEMBER_OFFSET_INIT(request_queue_rq,
+ "request_queue", "root_rl");
MEMBER_OFFSET_INIT(subsys_private_klist_devices, "subsys_private",
"klist_devices");
MEMBER_OFFSET_INIT(subsystem_kset, "subsystem", "kset");
--
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