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Description of problem:
sssd_be is aborting (roughly every couple of days) with the following back trace:
#0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#1 in __GI_abort () at abort.c:79
#2 in talloc_abort (reason=0x7ffff4320b48 "Bad talloc magic value - unknown value") at ../../talloc.c:505
#3 in talloc_abort_unknown_value () at ../../talloc.c:534
#4 talloc_chunk_from_ptr () at ../../talloc.c:534
#5 _talloc_free ( at ../../talloc.c:1767
#6 in refcount_destructor () at src/util/refcount.c:40
#7 refcount_destructor () at src/util/refcount.c:36
#8 in _tc_free_internal () at ../../talloc.c:1157
#9 _tc_free_children_internal () at ../../talloc.c:1666
#10 talloc_free_children () at ../../talloc.c:1712
#11 in _tc_free_internal () at ../../talloc.c:1183
#12 _talloc_free_internal () at ../../talloc.c:1247
#13 _talloc_free () at ../../talloc.c:1789
#14 in tevent_req_received () at ../../tevent_req.c:291
#15 in tevent_req_destructor () at ../../tevent_req.c:128
#16 in _tc_free_internal () at ../../talloc.c:1157
#17 _talloc_free_internal () at ../../talloc.c:1247
#18 _talloc_free () at ../../talloc.c:1789
#19 in sdap_cli_resolve_done () at src/providers/ldap/sdap_async_connection.c:1563
#20 in _tevent_req_error () at ../../tevent_req.c:211
#21 in be_resolve_server_done () at src/providers/data_provider_fo.c:581
#22 in tevent_common_invoke_immediate_handler () at ../../tevent_immediate.c:166
#23 in tevent_common_loop_immediate () at ../../tevent_immediate.c:203
#24 in epoll_event_loop_once () at ../../tevent_epoll.c:917
#25 in std_event_loop_once () at ../../tevent_standard.c:110
#26 in _tevent_loop_once () at ../../tevent.c:772
#27 in tevent_common_loop_wait () at ../../tevent.c:895
#28 in std_event_loop_wait () at ../../tevent_standard.c:141
#29 in server_loop () at src/util/server.c:727
#30 in main () at src/providers/data_provider_be.c:743
frame 19:
p *subreq
$2 = {async = {fn = 0x7fffeaa84b20 <sdap_cli_resolve_done>, private_data = 0x5555557ecac0},
data = 0x5555558b73d0, private_print = 0x0, private_cancel = 0x0, private_cleanup = {fn = 0x0,
state = TEVENT_REQ_INIT}, internal = {private_type = 0x55555557a590 "struct be_resolve_server_state",
create_location = 0x55555557a568 "src/providers/data_provider_fo.c:515",
finish_location = 0x55555557a820 "src/providers/data_provider_fo.c:581", cancel_location = 0x0,
state = TEVENT_REQ_RECEIVED, error = 5, trigger = 0x0, defer_callback_ev = 0x0, timer = 0x0,
profile = 0x0}}
Version-Release number of selected component (if applicable):
sssd-2.3.0-9
How reproducible:
No reproducer available.
Additional info:
There are a core file and relevant sssd logs in the case attached.
`struct fo_server *` is allocated via `rc_alloc(server_owner, struct fo_server)` that does actual allocation on NULL context:
wrapper->ptr = talloc_named_const(NULL, size, type_name);
IIUC, the idea is that `fo_server` object should be only de-allocated when last wrapper is de-allocated (*wrapper->refcount == 0)
Maybe some of providers perform explicit de-allocation (by a mistake), but so far I wasn't able to spot such a place.
(In reply to Alexey Tikhonov from comment #7)
>
> Maybe some of providers perform explicit de-allocation (by a mistake), but
> so far I wasn't able to spot such a place.
Ah, if this would be a case, then "free() location" would be different, but this is "src/util/refcount.c:40"
Customer is running sssd-2.3.0-9.el8, with same kernel on 800+ hosts ... but so far seeing this on 1 host.
Any test/scratch builds wanting them to try?
(In reply to James Hartsock from comment #9)
> Customer is running sssd-2.3.0-9.el8, with same kernel on 800+ hosts ... but
> so far seeing this on 1 host.
Any idea what makes this host special? Network conditions, maybe?
Is this a VM? Did customer try to re-deploy this host?
> Any test/scratch builds wanting them to try?
No ideas yet.
> Any idea what makes this host special (Network or other)?
That's the weird thing, it's the only one of all those hosts that has this issue.
Even if you go a step further, among RHEL 8.3 hosts on VMs in this data centre, it's the only one that displays this issue. I'll look again, but I haven't found anything special about the settings or networking either thus far.
---
Above is directly from customer. I have asked if they are able to leave the AD domain, reinstall sssd, rejoin. But if that clears it we never know the cause!
Description of problem: sssd_be is aborting (roughly every couple of days) with the following back trace: #0 __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50 #1 in __GI_abort () at abort.c:79 #2 in talloc_abort (reason=0x7ffff4320b48 "Bad talloc magic value - unknown value") at ../../talloc.c:505 #3 in talloc_abort_unknown_value () at ../../talloc.c:534 #4 talloc_chunk_from_ptr () at ../../talloc.c:534 #5 _talloc_free ( at ../../talloc.c:1767 #6 in refcount_destructor () at src/util/refcount.c:40 #7 refcount_destructor () at src/util/refcount.c:36 #8 in _tc_free_internal () at ../../talloc.c:1157 #9 _tc_free_children_internal () at ../../talloc.c:1666 #10 talloc_free_children () at ../../talloc.c:1712 #11 in _tc_free_internal () at ../../talloc.c:1183 #12 _talloc_free_internal () at ../../talloc.c:1247 #13 _talloc_free () at ../../talloc.c:1789 #14 in tevent_req_received () at ../../tevent_req.c:291 #15 in tevent_req_destructor () at ../../tevent_req.c:128 #16 in _tc_free_internal () at ../../talloc.c:1157 #17 _talloc_free_internal () at ../../talloc.c:1247 #18 _talloc_free () at ../../talloc.c:1789 #19 in sdap_cli_resolve_done () at src/providers/ldap/sdap_async_connection.c:1563 #20 in _tevent_req_error () at ../../tevent_req.c:211 #21 in be_resolve_server_done () at src/providers/data_provider_fo.c:581 #22 in tevent_common_invoke_immediate_handler () at ../../tevent_immediate.c:166 #23 in tevent_common_loop_immediate () at ../../tevent_immediate.c:203 #24 in epoll_event_loop_once () at ../../tevent_epoll.c:917 #25 in std_event_loop_once () at ../../tevent_standard.c:110 #26 in _tevent_loop_once () at ../../tevent.c:772 #27 in tevent_common_loop_wait () at ../../tevent.c:895 #28 in std_event_loop_wait () at ../../tevent_standard.c:141 #29 in server_loop () at src/util/server.c:727 #30 in main () at src/providers/data_provider_be.c:743 frame 19: p *subreq $2 = {async = {fn = 0x7fffeaa84b20 <sdap_cli_resolve_done>, private_data = 0x5555557ecac0}, data = 0x5555558b73d0, private_print = 0x0, private_cancel = 0x0, private_cleanup = {fn = 0x0, state = TEVENT_REQ_INIT}, internal = {private_type = 0x55555557a590 "struct be_resolve_server_state", create_location = 0x55555557a568 "src/providers/data_provider_fo.c:515", finish_location = 0x55555557a820 "src/providers/data_provider_fo.c:581", cancel_location = 0x0, state = TEVENT_REQ_RECEIVED, error = 5, trigger = 0x0, defer_callback_ev = 0x0, timer = 0x0, profile = 0x0}} Version-Release number of selected component (if applicable): sssd-2.3.0-9 How reproducible: No reproducer available. Additional info: There are a core file and relevant sssd logs in the case attached.