Not all JSON methods require 'params' field to be supplied.
Verification of the JSON is done on server side in
parse_single_request().
We should not attempt to process garbage values on correct
JSON config file during app start.
Segfault can be observed if following valid JSON config is supplied:
{
"method": "framework_wait_init"
}
Resulting in:
json_config.c:388:13: runtime error: applying non-zero offset 18446744073709551600 to null pointer
AddressSanitizer:DEADLYSIGNAL
=================================================================
==3386067==ERROR: AddressSanitizer: SEGV on unknown address (pc 0x0000007260ff bp 0x7ffe6ea06890 sp 0x7ffe6ea067e0 T0)
==3386067==The signal is caused by a READ memory access.
==3386067==Hint: this fault was caused by a dereference of a high value address (see register values below). Dissassemble the provided pc to learn which register was used.
#0 0x7260ff in app_json_config_load_subsystem_config_entry /home/tzawadzk/spdk/lib/event/json_config.c:391
#1 0x7cbb13 in msg_queue_run_batch /home/tzawadzk/spdk/lib/thread/thread.c:505
#2 0x7cd00a in thread_poll /home/tzawadzk/spdk/lib/thread/thread.c:581
#3 0x7cfe18 in spdk_thread_poll /home/tzawadzk/spdk/lib/thread/thread.c:689
#4 0x71d6ef in _reactor_run /home/tzawadzk/spdk/lib/event/reactor.c:326
#5 0x71eb00 in reactor_run /home/tzawadzk/spdk/lib/event/reactor.c:382
#6 0x71f911 in spdk_reactors_start /home/tzawadzk/spdk/lib/event/reactor.c:477
#7 0x718237 in spdk_app_start /home/tzawadzk/spdk/lib/event/app.c:691
#8 0x407e94 in main /home/tzawadzk/spdk/app/spdk_tgt/spdk_tgt.c:120
#9 0x7f0f2eef2041 in __libc_start_main ../csu/libc-start.c:308
#10 0x4079ad in _start (/home/tzawadzk/spdk/build/bin/spdk_tgt+0x4079ad)
Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Change-Id: I7ef1a764467817ad788fdf5dbe17eaeb99dcc22e
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/3256
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
cebf307b61