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Posted to issues@trafficserver.apache.org by "traeak (via GitHub)" <gi...@apache.org> on 2023/05/09 20:17:10 UTC
[GitHub] [trafficserver] traeak opened a new issue, #9690: ats92 crash
traeak opened a new issue, #9690:
URL: https://github.com/apache/trafficserver/issues/9690
stack trace ats92 (9df7f8d4d41bda93e1d1a3ba741a6bce53c64ef0)
live linear cache ram drives only, testing session mutex congestion. Turned on http_ss debug but also for fun made a custom debug tag with session lifetime information which also causes the same crash.
(gdb) where
#0 0x00007f6dff905aff in raise () from /lib64/libc.so.6
#1 0x00007f6dff8d8ea5 in abort () from /lib64/libc.so.6
#2 0x00007f6e01dcdace in ink_abort (
message_format=0x7f6e01e3afc8 "%s:%d: failed assertion `%s`")
at ink_error.cc:99
#3 0x00007f6e01dc93cb in _ink_assert (
expression=0xb014c0 "(cache_sm.cache_write_vc == nullptr) || t_state.redirect_info.redirect_in_process", file=0xafc39e "HttpSM.cc", line=7864)
at ink_assert.cc:37
#4 0x00000000007dc47b in HttpSM::set_next_state (this=0x7f6d91f86720)
at HttpSM.cc:7864
#5 0x00000000007daece in HttpSM::call_transact_and_set_next_state (
this=0x7f6d91f86720, f=0x0) at HttpSM.cc:7597
#6 0x00000000007bbc15 in HttpSM::handle_api_return (this=0x7f6d91f86720)
at HttpSM.cc:1706
#7 0x00000000007bb90b in HttpSM::state_api_callout (this=0x7f6d91f86720,
event=0, data=0x0) at HttpSM.cc:1638
#8 0x00000000007d10b1 in HttpSM::do_api_callout_internal (this=0x7f6d91f86720)
at HttpSM.cc:5555
#9 0x00000000007e4fc3 in HttpSM::do_api_callout (this=0x7f6d91f86720)
at HttpSM.cc:421
#10 0x00000000007e500a in HttpSM::setup_cache_lookup_complete_api (
this=0x7f6d91f86720) at HttpSM.cc:2648
#11 0x00000000007c1cf8 in HttpSM::state_cache_open_read (this=0x7f6d91f86720,
event=1103, data=0xffffffffffffb04f) at HttpSM.cc:2709
#12 0x00000000007c2190 in HttpSM::main_handler (this=0x7f6d91f86720,
event=1103, data=0xffffffffffffb04f) at HttpSM.cc:2753
#13 0x00000000007186f1 in Continuation::handleEvent (this=0x7f6d91f86720,
event=1103, data=0xffffffffffffb04f)
at /home/bolsen149/git/tsb-ats92/src/ats/iocore/eventsystem/I_Continuation.h:227
#14 0x0000000000857487 in HttpCacheSM::state_cache_open_read (
this=0x7f6d91f88548, event=1103, data=0xffffffffffffb04f)
at HttpCacheSM.cc:128
#15 0x00000000007186f1 in Continuation::handleEvent (this=0x7f6d91f88548,
event=1103, data=0xffffffffffffb04f)
at /home/bolsen149/git/tsb-ats92/src/ats/iocore/eventsystem/I_Continuation.h:227
#16 0x00000000009ab61f in CacheVC::openReadFromWriterFailure (this=
0x7f6d85438d20, event=1103, e=0xffffffffffffb04f) at CacheRead.cc:189
#17 0x00000000009ac4f3 in CacheVC::openReadFromWriter (this=0x7f6d85438d20,
event=2, e=0x7f6da955baa0) at CacheRead.cc:348
#18 0x00000000007186f1 in Continuation::handleEvent (this=0x7f6d85438d20,
event=2, data=0x7f6da955baa0)
at /home/bolsen149/git/tsb-ats92/src/ats/iocore/eventsystem/I_Continuation.h:227
#19 0x0000000000acd56b in EThread::process_event (this=0x7f6dfd519010,
e=0x7f6da955baa0, calling_code=2) at UnixEThread.cc:164
#20 0x0000000000acdad6 in EThread::execute_regular (this=0x7f6dfd519010)
at UnixEThread.cc:273
#21 0x0000000000acde3d in EThread::execute (this=0x7f6dfd519010)
at UnixEThread.cc:364
#22 0x0000000000acc5fa in spawn_thread_internal (a=0x2dc5590) at Thread.cc:91
#23 0x00007f6e007b81cf in start_thread () from /lib64/libpthread.so.0
#24 0x00007f6dff8f0e73 in clone () from /lib64/libc.so.6
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[GitHub] [trafficserver] traeak commented on issue #9690: ats92/master crash
Posted by "traeak (via GitHub)" <gi...@apache.org>.
traeak commented on issue #9690:
URL: https://github.com/apache/trafficserver/issues/9690#issuecomment-1577303589
The only way I can make this crash happen is with a vastly under resourced box being heavily cpu congested (all cores slammed). Crash seems to still be valid but is some nasty race condition.
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Re: [I] ats92/master crash [trafficserver]
Posted by "traeak (via GitHub)" <gi...@apache.org>.
traeak closed issue #9690: ats92/master crash
URL: https://github.com/apache/trafficserver/issues/9690
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[GitHub] [trafficserver] traeak commented on issue #9690: ats92 crash
Posted by "traeak (via GitHub)" <gi...@apache.org>.
traeak commented on issue #9690:
URL: https://github.com/apache/trafficserver/issues/9690#issuecomment-1544618373
I think this might be fixed in master, a race condition. Currently testing.
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