Hello
I experienced multiple cases of this crash:
Program terminated with signal SIGSEGV, Segmentation fault.
#0 list_del_init (old=0x24103800)
at ../../../../libglusterfs/src/glusterfs/list.h:82
warning: Source file is more recent than executable.
82 old->prev->next = old->next;
[Current thread is 1 (process 100)]
(gdb) bt
#0 list_del_init (old=0x24103800)
at ../../../../libglusterfs/src/glusterfs/list.h:82
#1 __iot_dequeue (conf=conf@entry=0xb5c03338, pri=pri@entry=0xb1c53fb4)
at io-threads.c:110
#2 0xb59fe379 in iot_worker (data=0xb5c03338) at io-threads.c:222
(gdb) print old
$1 = (struct list_head *) 0x24103800
(gdb) print *old
Cannot access memory at address 0x24103800
Offending code in frame 1:
108 /* Get the first request on that queue. */
109 stub = list_first_entry(&ctx->reqs, call_stub_t, list);
110 list_del_init(&stub->list);
(gdb) print stub
$1 = (call_stub_t *) 0x979fb800
(gdb) print *stub
Cannot access memory at address 0x979fb800
(gdb) print ctx->reqs
Cannot access memory at address 0xa8979ff4
(gdb) print *ctx
Cannot access memory at address 0xa8979ff4
We got ctx a bit earlier:
98 /* Get the first per-client queue for this priority. */
99 ctx = list_first_entry(&conf->clients[i], iot_client_ctx_t, clients);
And the list is obviously bad here:
(gdb) print *conf->clients[3]->next
$11 = {next = 0x144, prev = 0x0}
Known bug?
--
Emmanuel Dreyfus
manu@xxxxxxxxxx
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