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https://issues.apache.org/jira/browse/DISPATCH-2206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17441132#comment-17441132
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Jiri Daněk commented on DISPATCH-2206:
--------------------------------------
One more variant of the trace above, see how short the dealloc trace is here!
https://github.com/jiridanek/qpid-dispatch/runs/4141024583?check_suite_focus=true#step:27:20633
{noformat}
E ==6485==ERROR: AddressSanitizer: heap-use-after-free on address
0x61700079c7b0 at pc 0x0000005a834b bp 0x7ffd644b3a30 sp 0x7ffd644b3a28
E READ of size 8 at 0x61700079c7b0 thread T0
E #0 0x5a834a in qdr_link_get_context
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_core/connections.c:516
E #1 0x693d51 in CORE_link_second_attach
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_node.c:1736
E #2 0x5a3def in qdr_connection_process
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_core/connections.c:355
E #3 0x4ededa in writable_handler
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/container.c:388
E #4 0x6aebc1 in handle
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1108
E #5 0x6b6b3f in thread_run
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1133
E #6 0x6b9241 in qd_server_run
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1527
E #7 0x434afd in main_process
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:115
E #8 0x433a32 in main
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:369
E #9 0x7f30fa148b74 in __libc_start_main
(/lib64/libc.so.6+0x27b74)
E #10 0x4348ed in _start
(/__w/qpid-dispatch/qpid-dispatch/qpid-dispatch/build/router/qdrouterd+0x4348ed)
E
E 0x61700079c7b0 is located 176 bytes inside of 704-byte region
[0x61700079c700,0x61700079c9c0)
E freed by thread T1 here:
E #0 0x7f30fb573647 in free (/lib64/libasan.so.6+0xae647)
E #1 0x4c2902 in qd_dealloc
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/alloc_pool.c:497
E #2 0x635c87 in router_core_thread
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_core/router_core_thread.c:236
E #3 0x7f30fb058298 in start_thread
(/lib64/libpthread.so.0+0x9298)
E
E previously allocated by thread T0 here:
E #0 0x7f30fb57451c in __interceptor_posix_memalign
(/lib64/libasan.so.6+0xaf51c)
E #1 0x4bed1d in qd_alloc
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/alloc_pool.c:393
E #2 0x5a8a71 in qdr_link_first_attach
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_core/connections.c:617
E #3 0x693894 in AMQP_outgoing_link_handler
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_node.c:1025
E #4 0x6aebc1 in handle
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1108
E #5 0x6b6b3f in thread_run
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1133
E #6 0x6b9241 in qd_server_run
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/server.c:1527
E #7 0x434afd in main_process
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:115
E #8 0x433a32 in main
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/router/src/main.c:369
E #9 0x7f30fa148b74 in __libc_start_main
(/lib64/libc.so.6+0x27b74)
E
E Thread T1 created by T0 here:
E #0 0x7f30fb51b8d6 in pthread_create
(/lib64/libasan.so.6+0x568d6)
E #1 0x56dbd5 in sys_thread
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/posix/threading.c:181
E #2 0x61bb52 in qdr_core
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_core/router_core.c:124
E #3 0x69ee42 in qd_router_setup_late
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_node.c:2127
E #4 0x7f30f5c0cc03 in ffi_call_unix64 (/lib64/libffi.so.6+0x6c03)
E #5 0x7ffd644b3b6f ([stack]+0x21b6f)
E
E SUMMARY: AddressSanitizer: heap-use-after-free
/home/runner/work/qpid-dispatch/qpid-dispatch/qpid-dispatch/src/router_core/connections.c:516
in qdr_link_get_context
E Shadow bytes around the buggy address:
E 0x0c2e800eb8a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
E 0x0c2e800eb8b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
E 0x0c2e800eb8c0: 00 00 00 00 00 00 00 00 fa fa fa fa fa fa fa fa
E 0x0c2e800eb8d0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
E 0x0c2e800eb8e0: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
E =>0x0c2e800eb8f0: fd fd fd fd fd fd[fd]fd fd fd fd fd fd fd fd fd
E 0x0c2e800eb900: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
E 0x0c2e800eb910: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
E 0x0c2e800eb920: fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd fd
E 0x0c2e800eb930: fd fd fd fd fd fd fd fd fa fa fa fa fa fa fa fa
E 0x0c2e800eb940: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
E Shadow byte legend (one shadow byte represents 8 application bytes):
E Addressable: 00
E Partially addressable: 01 02 03 04 05 06 07
E Heap left redzone: fa
E Freed heap region: fd
E Stack left redzone: f1
E Stack mid redzone: f2
E Stack right redzone: f3
E Stack after return: f5
E Stack use after scope: f8
E Global redzone: f9
E Global init order: f6
E Poisoned by user: f7
E Container overflow: fc
E Array cookie: ac
E Intra object redzone: bb
E ASan internal: fe
E Left alloca redzone: ca
E Right alloca redzone: cb
E Shadow gap: cc
E ==6485==ABORTING
{noformat}
> ASAN use-after-free of qdr_link_t by I/O thread
> -----------------------------------------------
>
> Key: DISPATCH-2206
> URL: https://issues.apache.org/jira/browse/DISPATCH-2206
> Project: Qpid Dispatch
> Issue Type: Bug
> Components: Router Node
> Affects Versions: 1.16.1
> Reporter: Ken Giusti
> Priority: Major
> Labels: asan
> Fix For: 1.19.0
>
>
> [https://github.com/apache/qpid-dispatch/blob/main/src/router_core/connections.c#L1344]
>
> {{27: ==3859==ERROR: AddressSanitizer: use-after-poison on address
> 0x61700017e030 at pc 0x56212343cdac bp 0x7f9d33c40c90 sp 0x7f9d33c40c80 }}
> {{ }}{{}}
> 27: READ of size 8 at 0x61700017e030 thread T2
> {{}}{{}}{{}}{{}}{{}}{{}}{{}}{{}}{{}}{{}}{{}}{{}}{{ }}{{}}
> 27: #0 0x56212343cdab in qdr_link_get_context
> ../src/router_core/connections.c:498
> {{}}{{ }}{{}}
> 27: #1 0x56212352ec25 in CORE_link_second_attach ../src/router_node.c:1729
> {{}}{{ }}{{}}
> 27: #2 0x5621234388df in qdr_connection_process
> ../src/router_core/connections.c:355
> {{}}{{ }}{{}}
> 27: #3 0x56212338eccf in writable_handler ../src/container.c:396
> {{}}{{ }}{{}}
> 27: #4 0x56212338eccf in qd_container_handle_event ../src/container.c:748
> {{}}{{ }}{{}}
> 27: #5 0x562123547289 in handle ../src/server.c:1108
> {{}}{{ }}{{}}
> 27: #6 0x562123554c9f in thread_run ../src/server.c:1133
> {{}}{{ }}{{}}
> 27: #7 0x7f9d3ba6c608 in start_thread
> (/lib/x86_64-linux-gnu/libpthread.so.0+0x9608)
> {{}}{{ }}{{}}
> 27: #8 0x7f9d3ac33292 in __clone (/lib/x86_64-linux-gnu/libc.so.6+0x122292)
> {{}}{{ }}{{}}
> 27:
> {{}}{{ }}{{}}
> 27: 0x61700017e030 is located 176 bytes inside of 704-byte region
> [0x61700017df80,0x61700017e240)
> {{}}{{ }}{{}}
> 27: allocated by thread T2 here:
> {{}}{{ }}{{}}
> 27: #0 0x7f9d3bfd9aa5 in posix_memalign
> (/lib/x86_64-linux-gnu/libasan.so.5+0x10eaa5)
> {{}}{{ }}{{}}
> 27: #1 0x5621233247b0 in qd_alloc ../src/alloc_pool.c:396
> {{}}{{ }}{{}}
> 27: #2 0x56212343d4c9 in qdr_link_first_attach
> ../src/router_core/connections.c:592
> {{}}{{ }}{{}}
> 27: #3 0x56212352dde9 in AMQP_outgoing_link_handler
> ../src/router_node.c:1018
> {{}}{{ }}{{}}
> 27: #4 0x562123547289 in handle ../src/server.c:1108
> {{}}{{ }}{{}}
> 27: #5 0x562123554c9f in thread_run ../src/server.c:1133
> {{}}{{ }}{{}}
> 27: #6 0x7f9d3ba6c608 in start_thread
> (/lib/x86_64-linux-gnu/libpthread.so.0+0x9608)
> {{}}{{ }}{{}}
> 27:
> {{}}{{ }}{{}}
> 27: Thread T2 created by T0 here:
> {{}}{{ }}{{}}
> 27: #0 0x7f9d3bf05805 in pthread_create
> (/lib/x86_64-linux-gnu/libasan.so.5+0x3a805)
> {{}}{{ }}{{}}
> 27: #1 0x562123403bcf in sys_thread ../src/posix/threading.c:181
> {{}}{{ }}{{}}
> 27: #2 0x56212355541e in qd_server_run ../src/server.c:1522
> {{}}{{ }}{{}}
> 27: #3 0x56212359f46c in main_process ../router/src/main.c:115
> {{}}{{ }}{{}}
> 27: #4 0x56212329bc50 in main ../router/src/main.c:369
> {{}}{{ }}{{}}
> 27: #5 0x7f9d3ab380b2 in __libc_start_main
> (/lib/x86_64-linux-gnu/libc.so.6+0x270b2)
> {{}}{{ }}{{}}
> 27:
> {{}}{{ }}{{}}
> 27: SUMMARY: AddressSanitizer: use-after-poison
> ../src/router_core/connections.c:498 in qdr_link_get_context
> {{}}{{ }}{{}}
> 27: Shadow bytes around the buggy address:
> {{}}{{ }}{{}}
> 27: 0x0c2e80027bb0: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7
> {{}}{{ }}{{}}
> 27: 0x0c2e80027bc0: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7
> {{}}{{ }}{{}}
> 27: 0x0c2e80027bd0: f7 f7 f7 f7 f7 f7 f7 00 fa fa fa fa fa fa fa fa
> {{}}{{ }}{{}}
> 27: 0x0c2e80027be0: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
> {{}}{{ }}{{}}
> 27: 0x0c2e80027bf0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
> {{}}{{ }}{{}}
> 27: =>0x0c2e80027c00: 00 00 f7 f7 f7 f7[f7]f7 f7 f7 f7 f7 f7 f7 f7 f7
> {{}}{{ }}{{}}
> 27: 0x0c2e80027c10: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7
> {{}}{{ }}{{}}
> 27: 0x0c2e80027c20: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7
> {{}}{{ }}{{}}
> 27: 0x0c2e80027c30: f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7 f7
> {{}}{{ }}{{}}
> 27: 0x0c2e80027c40: f7 f7 f7 f7 f7 f7 f7 00 fa fa fa fa fa fa fa fa
> {{}}{{ }}{{}}
> 27: 0x0c2e80027c50: fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa fa
> {{}}{{ }}{{}}
> 27: Shadow byte legend (one shadow byte represents 8 application bytes):
> {{}}{{ }}{{}}
> 27: Addressable: 00
> {{}}{{ }}{{}}
> 27: Partially addressable: 01 02 03 04 05 06 07
> {{}}{{ }}{{}}
> 27: Heap left redzone: fa
> {{}}{{ }}{{}}
> 27: Freed heap region: fd
> {{}}{{ }}{{}}
> 27: Stack left redzone: f1
> {{}}{{ }}{{}}
> 27: Stack mid redzone: f2
> {{}}{{ }}{{}}
> 27: Stack right redzone: f3
> {{}}{{ }}{{}}
> 27: Stack after return: f5
> {{}}{{ }}{{}}
> 27: Stack use after scope: f8
> {{}}{{ }}{{}}
> 27: Global redzone: f9
> {{}}{{ }}{{}}
> 27: Global init order: f6
> {{}}{{ }}{{}}
> 27: Poisoned by user: f7
> {{}}{{ }}{{}}
> 27: Container overflow: fc
> {{}}{{ }}{{}}
> 27: Array cookie: ac
> {{}}{{ }}{{}}
> 27: Intra object redzone: bb
> {{}}{{ }}{{}}
> 27: ASan internal: fe
> {{}}{{ }}{{}}
> 27: Left alloca redzone: ca
> {{}}{{ }}{{}}
> 27: Right alloca redzone: cb
> {{}}{{ }}{{}}
> 27: Shadow gap: cc
> {{}}{{ }}{{}}
> 27: ==3859==ABORTING
> {{}}{{ }}{{27: }}
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