Re: [tor-bugs] #18614 [Core Tor/Tor]: tor uses full cpu when unplugged

[Tor Bug Tracker & Wiki]

#18614: tor uses full cpu when unplugged
-+-
 Reporter:  zqcxobbe |  Owner:  ahf
 Type:  defect   | Status:  closed
 Priority:  High |  Milestone:  Tor:
 |  unspecified
Component:  Core Tor/Tor |Version:
 Severity:  Normal   | Resolution:
 Keywords:  tor, cpu, hang, tor-client,  |  worksforme
  sponsor8-maybe, resource-management,   |  Actual Points:
  034-triage-20180328, 034-deferred-20180602,|
  035-removed-20180711   |
Parent ID:  #25500   | Points:
 Reviewer:   |Sponsor:
 |  Sponsor8-can
-+-
Changes (by nickm):

 * status:  assigned => closed
 * resolution:   => worksforme


Comment:

 We've made a lot of progress since this was opened, and rewritten most of
 the periodic event code.  Please reopen if this is still happening with
 0.3.5.x or later.

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Re: [tor-bugs] #18614 [Core Tor/Tor]: tor uses full cpu when unplugged

[Tor Bug Tracker & Wiki]

#18614: tor uses full cpu when unplugged
-+-
 Reporter:  zqcxobbe |  Owner:  ahf
 Type:  defect   | Status:
 |  assigned
 Priority:  High |  Milestone:  Tor:
 |  0.3.5.x-final
Component:  Core Tor/Tor |Version:
 Severity:  Normal   | Resolution:
 Keywords:  tor, cpu, hang, tor-client,  |  Actual Points:
  sponsor8-maybe, resource-management,   |
  034-triage-20180328, 034-deferred-20180602 |
Parent ID:  #25500   | Points:
 Reviewer:   |Sponsor:
 |  Sponsor8-can
-+-
Changes (by teor):

 * parent:   => #25500


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Re: [tor-bugs] #18614 [Core Tor/Tor]: tor uses full cpu when unplugged

[Tor Bug Tracker & Wiki]

#18614: tor uses full cpu when unplugged
-+-
 Reporter:  zqcxobbe |  Owner:  ahf
 Type:  defect   | Status:
 |  assigned
 Priority:  High |  Milestone:  Tor:
 |  0.3.5.x-final
Component:  Core Tor/Tor |Version:
 Severity:  Normal   | Resolution:
 Keywords:  tor, cpu, hang, tor-client,  |  Actual Points:
  sponsor8-maybe, resource-management,   |
  034-triage-20180328, 034-deferred-20180602 |
Parent ID:   | Points:
 Reviewer:   |Sponsor:
 |  Sponsor8-can
-+-

Comment (by arma):

 See also #25461 and #24857 for other profiling / cpu load tickets. Should
 we merge them, or pick our favorite and close the others?

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Re: [tor-bugs] #18614 [Core Tor/Tor]: tor uses full cpu when unplugged

[Tor Bug Tracker & Wiki]

#18614: tor uses full cpu when unplugged
-+-
 Reporter:  zqcxobbe |  Owner:  ahf
 Type:  defect   | Status:
 |  assigned
 Priority:  High |  Milestone:  Tor:
 |  0.3.4.x-final
Component:  Core Tor/Tor |Version:
 Severity:  Normal   | Resolution:
 Keywords:  tor, cpu, hang, tor-client,  |  Actual Points:
  sponsor8-maybe, resource-management,   |
  034-triage-20180328|
Parent ID:   | Points:
 Reviewer:   |Sponsor:
 |  Sponsor8-can
-+-
Changes (by ahf):

 * status:  needs_information => assigned
 * owner:  (none) => ahf


Comment:

 Began looking into this last week, marking myself as assigned.

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Re: [tor-bugs] #18614 [Core Tor/Tor]: tor uses full cpu when unplugged

[Tor Bug Tracker & Wiki]

#18614: tor uses full cpu when unplugged
-+-
 Reporter:  zqcxobbe |  Owner:  (none)
 Type:  defect   | Status:
 |  needs_information
 Priority:  High |  Milestone:  Tor:
 |  0.3.4.x-final
Component:  Core Tor/Tor |Version:
 Severity:  Normal   | Resolution:
 Keywords:  tor, cpu, hang tor-client|  Actual Points:
  sponsor8-maybe resource-management |
Parent ID:   | Points:
 Reviewer:   |Sponsor:
 |  Sponsor8-can
-+-
Changes (by nickm):

 * milestone:  Tor: 0.3.2.x-final => Tor: 0.3.4.x-final


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Re: [tor-bugs] #18614 [Core Tor/Tor]: tor uses full cpu when unplugged

[Tor Bug Tracker & Wiki]

#18614: tor uses full cpu when unplugged
-+-
 Reporter:  zqcxobbe |  Owner:
 Type:  defect   | Status:
 |  needs_information
 Priority:  High |  Milestone:  Tor:
 |  unspecified
Component:  Core Tor/Tor |Version:
 Severity:  Normal   | Resolution:
 Keywords:  tor, cpu, hang tor-client|  Actual Points:
  sponsor8-maybe resource-management |
Parent ID:   | Points:
 Reviewer:   |Sponsor:
-+-
Changes (by nickm):

 * priority:  Medium => High
 * keywords:  tor, cpu, hang => tor, cpu, hang tor-client sponsor8-maybe
 resource-management


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Re: [tor-bugs] #18614 [Core Tor/Tor]: tor uses full cpu when unplugged

[Tor Bug Tracker & Wiki]

#18614: tor uses full cpu when unplugged
--+---
 Reporter:  zqcxobbe  |  Owner:
 Type:  defect| Status:  needs_information
 Priority:  Medium|  Milestone:
Component:  Core Tor/Tor  |Version:
 Severity:  Normal| Resolution:
 Keywords:  tor cpu hang  |  Actual Points:
Parent ID:| Points:
 Reviewer:|Sponsor:
--+---

Comment (by zqcxobbe):

 Replying to [comment:10 zqcxobbe]:
 > Replying to [comment:9 cypherpunks]:
 > > "Could not attach to process." and/or "ptrace: Operation not
 permitted." too?
 > I don't remember any of that, but I'll check when it happens again.

 I hope that this helps

 {{{
 $ sudo gdb -p 2369

 GNU gdb (Ubuntu 7.7.1-0ubuntu5~14.04.2) 7.7.1
 Copyright (C) 2014 Free Software Foundation, Inc.
 License GPLv3+: GNU GPL version 3 or later
 
 This is free software: you are free to change and redistribute it.
 There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
 and "show warranty" for details.
 This GDB was configured as "x86_64-linux-gnu".
 Type "show configuration" for configuration details.
 For bug reporting instructions, please see:
 .
 Find the GDB manual and other documentation resources online at:
 .
 For help, type "help".
 Type "apropos word" to search for commands related to "word".
 Attaching to process 2369
 Reading symbols from /usr/bin/tor...(no debugging symbols found)...done.
 Reading symbols from /lib/x86_64-linux-gnu/libz.so.1...(no debugging
 symbols found)...done.
 Loaded symbols for /lib/x86_64-linux-gnu/libz.so.1
 Reading symbols from /lib/x86_64-linux-gnu/libm.so.6...Reading symbols
 from /usr/lib/debug//lib/x86_64-linux-gnu/libm-2.19.so...done.
 done.
 Loaded symbols for /lib/x86_64-linux-gnu/libm.so.6
 Reading symbols from /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5...(no
 debugging symbols found)...done.
 Loaded symbols for /usr/lib/x86_64-linux-gnu/libevent-2.0.so.5
 Reading symbols from /lib/x86_64-linux-gnu/libssl.so.1.0.0...(no debugging
 symbols found)...done.
 Loaded symbols for /lib/x86_64-linux-gnu/libssl.so.1.0.0
 Reading symbols from /lib/x86_64-linux-gnu/libcrypto.so.1.0.0...(no
 debugging symbols found)...done.
 Loaded symbols for /lib/x86_64-linux-gnu/libcrypto.so.1.0.0
 Reading symbols from /usr/lib/x86_64-linux-gnu/libseccomp.so.2...(no
 debugging symbols found)...done.
 Loaded symbols for /usr/lib/x86_64-linux-gnu/libseccomp.so.2
 Reading symbols from /lib/x86_64-linux-gnu/libpthread.so.0...Reading
 symbols from /usr/lib/debug//lib/x86_64-linux-
 gnu/libpthread-2.19.so...done.
 done.
 [Thread debugging using libthread_db enabled]
 Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
 Loaded symbols for /lib/x86_64-linux-gnu/libpthread.so.0
 Reading symbols from /lib/x86_64-linux-gnu/libc.so.6...Reading symbols
 from /usr/lib/debug//lib/x86_64-linux-gnu/libc-2.19.so...done.
 done.
 Loaded symbols for /lib/x86_64-linux-gnu/libc.so.6
 Reading symbols from /lib/x86_64-linux-gnu/libdl.so.2...Reading symbols
 from /usr/lib/debug//lib/x86_64-linux-gnu/libdl-2.19.so...done.
 done.
 Loaded symbols for /lib/x86_64-linux-gnu/libdl.so.2
 Reading symbols from /lib64/ld-linux-x86-64.so.2...Reading symbols from
 /usr/lib/debug//lib/x86_64-linux-gnu/ld-2.19.so...done.
 done.
 Loaded symbols for /lib64/ld-linux-x86-64.so.2
 Reading symbols from /lib/x86_64-linux-gnu/libgcc_s.so.1...(no debugging
 symbols found)...done.
 Loaded symbols for /lib/x86_64-linux-gnu/libgcc_s.so.1
 Reading symbols from /lib/x86_64-linux-gnu/libnss_compat.so.2...Reading
 symbols from /usr/lib/debug//lib/x86_64-linux-
 gnu/libnss_compat-2.19.so...done.
 done.
 Loaded symbols for /lib/x86_64-linux-gnu/libnss_compat.so.2
 Reading symbols from /lib/x86_64-linux-gnu/libnsl.so.1...Reading symbols
 from /usr/lib/debug//lib/x86_64-linux-gnu/libnsl-2.19.so...done.
 done.
 Loaded symbols for /lib/x86_64-linux-gnu/libnsl.so.1
 Reading symbols from /lib/x86_64-linux-gnu/libnss_nis.so.2...Reading
 symbols from /usr/lib/debug//lib/x86_64-linux-
 gnu/libnss_nis-2.19.so...done.
 done.
 Loaded symbols for /lib/x86_64-linux-gnu/libnss_nis.so.2
 Reading symbols from /lib/x86_64-linux-gnu/libnss_files.so.2...Reading
 symbols from /usr/lib/debug//lib/x86_64-linux-
 gnu/libnss_files-2.19.so...done.
 done.
 Loaded symbols for /lib/x86_64-linux-gnu/libnss_files.so.2
 0x56505b2d65b0 in circuit_get_global_list ()
 (gdb) bt
 #0  0x56505b2d65b0 in circuit_get_global_list ()
 #1  0x56505b2e27fa in circuit_stream_is_being_handled ()
 #2  0x56505b2d0878 in ?? ()
 #3  0x56505b2d429c in circuit_establish_circuit ()
 #4  0x56505b2e5051 in circuit_launch_by_extend_info ()
 #5  0x56505b2e5b75 in ?? ()
 #6