[asterisk-bugs] [JIRA] (ASTERISK-30264) res_pjsip: Subscription handlers do not get cleanly unregistered, causing crash
Asterisk Team (JIRA)
noreply at issues.asterisk.org
Sun Oct 16 14:34:09 CDT 2022
[ https://issues.asterisk.org/jira/browse/ASTERISK-30264?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=260455#comment-260455 ]
Asterisk Team commented on ASTERISK-30264:
------------------------------------------
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> res_pjsip: Subscription handlers do not get cleanly unregistered, causing crash
> -------------------------------------------------------------------------------
>
> Key: ASTERISK-30264
> URL: https://issues.asterisk.org/jira/browse/ASTERISK-30264
> Project: Asterisk
> Issue Type: Bug
> Security Level: None
> Components: Resources/res_pjsip_exten_state, Resources/res_pjsip_mwi
> Affects Versions: 20.0.0
> Environment: Debian 10
> Reporter: N A
> Severity: Major
>
> The pubsub modules in Asterisk (...exten_state and mwi) cannot be cleanly reloaded/refreshed (unloaded and loaded).
> If "module refresh res_pjsip_exten_state" or "module refresh res_pjsip_mwi" is run, Asterisk will crash due to an assertion in pjproject. The assertion is on "Make sure no module with the specified name already registered" in evsub.c.
> This means that the handler is not getting cleaned up properly when the module is unloaded, so Asterisk is violating the PJSIP API.
> Backtraces from all crashes of this type are similar, here is one for the MWI module arbitrarily:
> {format}
> Thread 1 (Thread 0x7f6370819700 (LWP 28799)):
> #0 0x00007f639b67e7bb in __GI_raise (sig=sig at entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
> set = {__val = {0, 140065128352496, 0, 140065786033383, 4629771064781406208, 140065128352496, 140065128352597, 140065128352496, 140065128352496, 140065128352621, 140065128352796, 140065128352496, 140065128352796, 0, 0, 0}}
> pid = <optimized out>
> tid = <optimized out>
> #1 0x00007f639b669535 in __GI_abort () at abort.c:79
> save_stage = 1
> act = {__sigaction_handler = {sa_handler = 0x7f6380035e10, sa_sigaction = 0x7f6380035e10}, sa_mask = {__val = {0, 303, 140065128352496, 0, 0, 0, 21474836480, 140065066024520, 140065066024368, 140065787144976, 140065787129568, 0, 3264005630345583104, 140065787114426, 0, 140065787129568}}, sa_flags = -1672162622, sa_restorer = 0x7f639c54d370}
> sigs = {__val = {32, 0 <repeats 15 times>}}
> #2 0x00007f639b66940f in __assert_fail_base (fmt=0x7f639b7caee0 "%s%s%s:%u: %s%sAssertion `%s' failed.n%n", assertion=0x7f639c54d370 "find_pkg(event_name) == ((void *)0)", file=0x7f639c54d2c2 "../src/pjsip-simple/evsub.c", line=427, function=<optimized out>) at assert.c:92
> str = 0x7f6380035e10 "260206003200c177"
> total = 4096
> #3 0x00007f639b677102 in __GI___assert_fail (assertion=0x7f639c54d370 "find_pkg(event_name) == ((void *)0)", file=0x7f639c54d2c2 "../src/pjsip-simple/evsub.c", line=427, function=0x7f639c54da00 <__PRETTY_FUNCTION__.9784> "pjsip_evsub_register_pkg") at assert.c:101
> #4 0x00007f639c453652 in pjsip_evsub_register_pkg (pkg_mod=0x7f6378a71940 <pubsub_module>, event_name=0x7f6370818160, expires=3600, accept_cnt=1, accept=0x7f6370817f60) at ../src/pjsip-simple/evsub.c:427
> pkg = 0x7f6378a2310b
> i = 32611
> __PRETTY_FUNCTION__ = "pjsip_evsub_register_pkg"
> #5 0x00007f6378a5d3b7 in ast_sip_register_subscription_handler (handler=0x7f6378a264a0 <mwi_handler>) at res_pjsip_pubsub.c:2843
> event = {ptr = 0x7f6378a2310b "message-summary", slen = 15}
> accept = {{ptr = 0x7f6378a230e8 "application/simple-message-summary", slen = 34}, {ptr = 0x0, slen = 0} <repeats 31 times>}
> existing = 0x0
> i = 1
> __PRETTY_FUNCTION__ = "ast_sip_register_subscription_handler"
> __FUNCTION__ = "ast_sip_register_subscription_handler"
> #6 0x00007f6378a21f20 in load_module () at res_pjsip_mwi.c:1557
> mwi_container = 0x5a90b1d
> __FUNCTION__ = "load_module"
> __PRETTY_FUNCTION__ = "load_module"
> #7 0x000055af05b58c10 in start_resource (mod=0x55af06713180) at loader.c:1718
> tmp = "hb321005257U000000J202201pc177000000Ȃ201pc177000000260202201pc177000000000000000000000000000000>;"231c177000000?;"231c177000000000227201pc177000000200202201pc177000000332o266005257U000000260202201pc177000000240202201pc177000000240202201pc177000000020O317005257U000000316202201pc177000000260202201p020000000000020203201pc177000000263e265005257U000000000000000000000000000000(7242xc177000000207vy5#352:323%*273065207344"$", '000' <repeats 56 times>...
> res = 21935
> __PRETTY_FUNCTION__ = "start_resource"
> __FUNCTION__ = "start_resource"
> #8 0x000055af05b5929f in load_resource (resource_name=0x7f638000b8af "res_pjsip_mwi", suppress_logging=0, module_priorities=0x0, required=0, preload=0) at loader.c:1805
> mod = 0x55af06713180
> res = AST_MODULE_LOAD_SUCCESS
> __FUNCTION__ = "load_resource"
> __PRETTY_FUNCTION__ = "load_resource"
> #9 0x000055af05b593b1 in ast_load_resource (resource_name=0x7f638000b8af "res_pjsip_mwi") at loader.c:1828
> res = 0
> __PRETTY_FUNCTION__ = "ast_load_resource"
> #10 0x000055af05aff432 in handle_refresh (e=0x55af05d94f80 <cli_cli+2400>, cmd=-4, a=0x7f6370818440) at cli.c:832
> #11 0x000055af05b0738c in ast_cli_command_full (uid=0, gid=1004, fd=21, s=0x7f6370818720 "module refresh res_pjsip_mwi") at cli.c:3101
> args = {0x55af05d94f80 <cli_cli+2400> "020200312006257U", 0x7f638000b8a0 "module", 0x7f638000b8a7 "refresh", 0x7f638000b8af "res_pjsip_mwi", 0x0, 0x7f638000b079 "", 0x7f638000b07c "", 0x0, 0x0, 0x7f639c6d3b00 <_dl_fixup+208> "I211300d213004%030", 0x5 <error: Cannot access memory at address 0x5>, 0x0, 0x0, 0x7f639b650a98 "a=", 0x7f63708188d0 "", 0x7f639c6da4ba <_dl_runtime_resolve_xsave+138> "I211", <incomplete sequence 356>, 0x7f6370818918 "~p", 0x7f6370818918 "~p", 0x11 <error: Cannot access memory at address 0x11>, 0x1 <error: Cannot access memory at address 0x1>, 0x15 <error: Cannot access memory at address 0x15>, 0x7f6370818914 "f", 0x0, 0x0, 0x0, 0x0, 0x0, 0xffff00001fa5 <error: Cannot access memory at address 0xffff00001fa5>, 0x0 <repeats 17 times>, 0xffffffffffffffff <error: Cannot access memory at address 0xffffffffffffffff>, 0x632e726567676f6c <error: Cannot access memory at address 0x632e726567676f6c>, 0x5400475542454400 <error: Cannot access memory at address 0x5400475542454400>, 0x7f639b73feff <clone+63> "H211Ǹ<", 0x55af05c36a43 <ast_threadstorage_get+53> "H211E370H203", <incomplete sequence 370>, 0x55af0609e000 "276272355376", 0x7f638000ed10 "", 0x55af05aa0de3 <__ast_bt_get_addresses+29> "211302H213", <incomplete sequence 370211220>, 0x55af05b5f44a <__ast_rwlock_rdlock+181> "H213E340H211307350372331377377H213E340213 at x203370t177YH213E340213@xH213U340H230Hi300b001", 0x55af05d31f70 <__PRETTY_FUNCTION__.17423> "ast_verb_update", 0x92170818900 <error: Cannot access memory at address 0x92170818900>, 0x55af05b5f2f8 <__ast_rwlock_unlock+794> "211Eԃ", <incomplete sequence 324>, 0x55af063631a0 "343r252005257U", 0x0, 0x0, 0x7f638000ed10 "", 0x7f6370818860 "", 0x0, 0x0, 0x2000000000000000 <error: Cannot access memory at address 0x2000000000000000>}
> e = 0x55af05d94f80 <cli_cli+2400>
> x = 3
> duplicate = 0x7f638000b8a0 "module"
> tmp = "module refresh res_pjsip_mwi000ilent000233c177000000𤘛c177000000260216201pc177000000000000000000000000000000"
> retval = 0x2 <error: Cannot access memory at address 0x2>
> a = {fd = 21, argc = 3, argv = 0x7f63708184c8, line = 0x0, word = 0x0, pos = 0, n = 0}
> __PRETTY_FUNCTION__ = "ast_cli_command_full"
> #12 0x000055af05b07534 in ast_cli_command_multiple_full (uid=0, gid=1004, fd=21, size=29, s=0x7f6370818b70 "module refresh res_pjsip_mwi") at cli.c:3128
> cmd = "module refresh res_pjsip_mwi000ilent000pc177000000060u333005257U000000?;"231c177000000020355000200c177000000Ј201pc177000000346365265005257U000000000211201pc177000000274n323005257U000000002", '000' <repeats 311 times>...
> x = 28
> y = 29
> count = 0
> #13 0x000055af05a87f15 in netconsole (vconsole=0x55af05dccea0 <consoles>) at asterisk.c:1464
> cmds_read = 2
> bytes_read = 29
> con = 0x55af05dccea0 <consoles>
> hostname = "voip", '000' <repeats 59 times>
> inbuf = "module refresh res_pjsip_mwi000ilent000logger mute silent", '000' <repeats 19 times>, "Cj303005257U000000H016000000000000000000340F333005257U000000>;"231c177000000020355000200c177000000060214201pc177000000Cj303005257U000000H016000000000000000000340F333005257U000000~320314005257U000000020355000200c177000000 at 214201pc177000000N227303005257U000000260215201pc177000000220#331005257U000000?;"231c177000000"...
> outbuf = "373IRC SASL authentication successfuln servern373Joined IRC channel #REDACTED-testn373Joined IRC channel #REDACTED-asteriskn373Joined IRC channel #REDACTEDnmay be removed in a future release.n and will be "...
> end_buf = 0x7f6370818d70 "voip"
> start_read = 0x7f6370818b70 "module refresh res_pjsip_mwi"
> res = 1
> fds = {{fd = 21, events = 1, revents = 1}, {fd = 22, events = 1, revents = 0}}
> __FUNCTION__ = "netconsole"
> #14 0x000055af05c3a7a6 in dummy_start (data=0x7f637400b550) at utils.c:1574
> __cancel_buf = {__cancel_jmp_buf = {{__cancel_jmp_buf = {0, -4821410162945605947, 140065747647294, 140065747647295, 140065066030848, 0, -4821410162836554043, -1689408944167371067}, __mask_was_saved = 0}}, __pad = {0x7f6370818ed0, 0x0, 0x0, 0x0}}
> __cancel_routine = 0x55af05a85325 <ast_unregister_thread>
> __cancel_arg = 0x7f6370819700
> __not_first_call = 0
> ret = 0x0
> a = {start_routine = 0x55af05a87c78 <netconsole>, data = 0x55af05dccea0 <consoles>, name = 0x7f637400b610 "netconsole", ' ' <repeats 11 times>, "started at [ 1569] asterisk.c listener()"}
> lock_info = 0x7f638000ed10
> mutex_attr = {__size = "001000000", __align = 1}
> __PRETTY_FUNCTION__ = "dummy_start"
> #15 0x00007f639bcabfa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
> ret = <optimized out>
> pd = <optimized out>
> now = <optimized out>
> unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140065066030848, 4886414406491782853, 140065747647294, 140065747647295, 140065066030848, 0, -4821410162935120187, -4821314962282955067}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
> not_first_call = <optimized out>
> #16 0x00007f639b73feff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95
> {noformat}
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