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quota_clone plugin: quota_clone_mail_user_created warned without debug #7

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bdraco
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@bdraco bdraco commented Apr 9, 2016

"The quota_clone_dict setting is missing from configuration" warning
would be thrown when debug mode was not enabled. This warning
happens under normal circumstances when prefix="" namespace is not
defined (usually when set to INBOX.)

See http://dovecot.org/list/dovecot-cvs/2012-October/021981.html for
more details on the automagic prefix="" namespace.

This change suppresses the spurious warning.

"The quota_clone_dict setting is missing from configuration" warning
would be thrown when debug mode was not enabled.  This warning
happens under normal circumstances when prefix="" namespace is not
defined (usually when set to INBOX.)

See http://dovecot.org/list/dovecot-cvs/2012-October/021981.html for
more details on the automagic prefix="" namespace.

This change suppresses the spurious warning.
@cmouse
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cmouse commented Aug 4, 2016

We'll perform internal review on this.

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cmouse commented Aug 8, 2016

Merged.

@cmouse cmouse closed this Aug 8, 2016
DovecotSync pushed a commit that referenced this pull request Jul 9, 2019
This fixes a race condition where the http_client_host_shared_idle_timeout()
function would get called with an already freed hshared argument.

Specifically, the situation arises from the hshared idle timeout calling
http_client_host_shared_free(), which removes the timeout and then proceeds to
free the client queue.  The client queue freeing code indirectly calls
http_client_host_shared_check_idle(), which notices that there is no idle
timeout and allocates one.

The backtrace at the point of this new timeout allocation:

    frame #3: 0x00007f0c775897f0 libdovecot.so.0`timeout_add_to(...) ioloop.c:280
    frame #4: 0x00007f0c7751a45f libdovecot.so.0`http_client_host_shared_check_idle(hshared=<unavailable>) at http-client-host.c:69
    frame #5: 0x00007f0c7750de89 libdovecot.so.0`http_client_request_error(_req=<unavailable>, status=9000, error="") at http-client-request.c:1525
    frame #6: 0x00007f0c77517f38 libdovecot.so.0`http_client_queue_fail_full(queue=0x000055e13cff0e10, status=9000, error="", all=<unavailable>) at http-client-queue.c:183
    frame #7: 0x00007f0c77518baa libdovecot.so.0`http_client_queue_free(queue=0x000055e13cff0e10) at http-client-queue.c:141
    frame #8: 0x00007f0c7751a8bc libdovecot.so.0`http_client_host_free_shared(_host=<unavailable>) at http-client-host.c:391
    frame #9: 0x00007f0c7751ab4c libdovecot.so.0`http_client_host_shared_free(_hshared=0x00007ffdac109e48) at http-client-host.c:294
    frame #10: 0x00007f0c7751ace8 libdovecot.so.0`http_client_host_shared_idle_timeout(hshared=<unavailable>) at http-client-host.c:40
    frame #11: 0x00007f0c7758a1a4 libdovecot.so.0`io_loop_handle_timeouts at ioloop.c:682
    frame #12: 0x00007f0c7758a089 libdovecot.so.0`io_loop_handle_timeouts(ioloop=0x000055e13cfc8d80) at ioloop.c:696
    frame #13: 0x00007f0c7758befc libdovecot.so.0`io_loop_handler_run_internal(ioloop=0x000055e13cfc8d80) at ioloop-select.c:126
    frame #14: 0x00007f0c7758a56d libdovecot.so.0`io_loop_handler_run(ioloop=<unavailable>) at ioloop.c:767
    frame #15: 0x00007f0c7758a798 libdovecot.so.0`io_loop_run(ioloop=0x000055e13cfc8d80) at ioloop.c:740
    frame #16: 0x00007f0c774f61eb libdovecot.so.0`master_service_run(service=0x000055e13cfc8c10, callback=<unavailable>) at master-service.c:782
    frame #17: 0x000055e13b48e3a5 stats`main(argc=<unavailable>, argv=<unavailable>) at main.c:99
    frame #18: 0x00007f0c771092e1 libc.so.6`__libc_start_main + 241
    frame #19: 0x000055e13b48e41a stats`_start + 42
DovecotSync pushed a commit that referenced this pull request Jul 9, 2019
This fixes a race condition where the http_client_host_shared_idle_timeout()
function would get called with an already freed hshared argument.

Specifically, the situation arises from the hshared idle timeout calling
http_client_host_shared_free(), which removes the timeout and then proceeds to
free the client queue.  The client queue freeing code indirectly calls
http_client_host_shared_check_idle(), which notices that there is no idle
timeout and allocates one.

The backtrace at the point of this new timeout allocation:

    frame #3: 0x00007f0c775897f0 libdovecot.so.0`timeout_add_to(...) ioloop.c:280
    frame #4: 0x00007f0c7751a45f libdovecot.so.0`http_client_host_shared_check_idle(hshared=<unavailable>) at http-client-host.c:69
    frame #5: 0x00007f0c7750de89 libdovecot.so.0`http_client_request_error(_req=<unavailable>, status=9000, error="") at http-client-request.c:1525
    frame #6: 0x00007f0c77517f38 libdovecot.so.0`http_client_queue_fail_full(queue=0x000055e13cff0e10, status=9000, error="", all=<unavailable>) at http-client-queue.c:183
    frame #7: 0x00007f0c77518baa libdovecot.so.0`http_client_queue_free(queue=0x000055e13cff0e10) at http-client-queue.c:141
    frame #8: 0x00007f0c7751a8bc libdovecot.so.0`http_client_host_free_shared(_host=<unavailable>) at http-client-host.c:391
    frame #9: 0x00007f0c7751ab4c libdovecot.so.0`http_client_host_shared_free(_hshared=0x00007ffdac109e48) at http-client-host.c:294
    frame #10: 0x00007f0c7751ace8 libdovecot.so.0`http_client_host_shared_idle_timeout(hshared=<unavailable>) at http-client-host.c:40
    frame #11: 0x00007f0c7758a1a4 libdovecot.so.0`io_loop_handle_timeouts at ioloop.c:682
    frame #12: 0x00007f0c7758a089 libdovecot.so.0`io_loop_handle_timeouts(ioloop=0x000055e13cfc8d80) at ioloop.c:696
    frame #13: 0x00007f0c7758befc libdovecot.so.0`io_loop_handler_run_internal(ioloop=0x000055e13cfc8d80) at ioloop-select.c:126
    frame #14: 0x00007f0c7758a56d libdovecot.so.0`io_loop_handler_run(ioloop=<unavailable>) at ioloop.c:767
    frame #15: 0x00007f0c7758a798 libdovecot.so.0`io_loop_run(ioloop=0x000055e13cfc8d80) at ioloop.c:740
    frame #16: 0x00007f0c774f61eb libdovecot.so.0`master_service_run(service=0x000055e13cfc8c10, callback=<unavailable>) at master-service.c:782
    frame #17: 0x000055e13b48e3a5 stats`main(argc=<unavailable>, argv=<unavailable>) at main.c:99
    frame #18: 0x00007f0c771092e1 libc.so.6`__libc_start_main + 241
    frame #19: 0x000055e13b48e41a stats`_start + 42
DovecotSync pushed a commit that referenced this pull request Jul 12, 2019
This fixes a race condition where the http_client_host_shared_idle_timeout()
function would get called with an already freed hshared argument.

Specifically, the situation arises from the hshared idle timeout calling
http_client_host_shared_free(), which removes the timeout and then proceeds to
free the client queue.  The client queue freeing code indirectly calls
http_client_host_shared_check_idle(), which notices that there is no idle
timeout and allocates one.

The backtrace at the point of this new timeout allocation:

    frame #3: 0x00007f0c775897f0 libdovecot.so.0`timeout_add_to(...) ioloop.c:280
    frame #4: 0x00007f0c7751a45f libdovecot.so.0`http_client_host_shared_check_idle(hshared=<unavailable>) at http-client-host.c:69
    frame #5: 0x00007f0c7750de89 libdovecot.so.0`http_client_request_error(_req=<unavailable>, status=9000, error="") at http-client-request.c:1525
    frame #6: 0x00007f0c77517f38 libdovecot.so.0`http_client_queue_fail_full(queue=0x000055e13cff0e10, status=9000, error="", all=<unavailable>) at http-client-queue.c:183
    frame #7: 0x00007f0c77518baa libdovecot.so.0`http_client_queue_free(queue=0x000055e13cff0e10) at http-client-queue.c:141
    frame #8: 0x00007f0c7751a8bc libdovecot.so.0`http_client_host_free_shared(_host=<unavailable>) at http-client-host.c:391
    frame #9: 0x00007f0c7751ab4c libdovecot.so.0`http_client_host_shared_free(_hshared=0x00007ffdac109e48) at http-client-host.c:294
    frame #10: 0x00007f0c7751ace8 libdovecot.so.0`http_client_host_shared_idle_timeout(hshared=<unavailable>) at http-client-host.c:40
    frame #11: 0x00007f0c7758a1a4 libdovecot.so.0`io_loop_handle_timeouts at ioloop.c:682
    frame #12: 0x00007f0c7758a089 libdovecot.so.0`io_loop_handle_timeouts(ioloop=0x000055e13cfc8d80) at ioloop.c:696
    frame #13: 0x00007f0c7758befc libdovecot.so.0`io_loop_handler_run_internal(ioloop=0x000055e13cfc8d80) at ioloop-select.c:126
    frame #14: 0x00007f0c7758a56d libdovecot.so.0`io_loop_handler_run(ioloop=<unavailable>) at ioloop.c:767
    frame #15: 0x00007f0c7758a798 libdovecot.so.0`io_loop_run(ioloop=0x000055e13cfc8d80) at ioloop.c:740
    frame #16: 0x00007f0c774f61eb libdovecot.so.0`master_service_run(service=0x000055e13cfc8c10, callback=<unavailable>) at master-service.c:782
    frame #17: 0x000055e13b48e3a5 stats`main(argc=<unavailable>, argv=<unavailable>) at main.c:99
    frame #18: 0x00007f0c771092e1 libc.so.6`__libc_start_main + 241
    frame #19: 0x000055e13b48e41a stats`_start + 42
cgzones added a commit to cgzones/core that referenced this pull request Aug 12, 2024
The input string `=0A=0D  ` contains on only four symbols: \n, \r, and
two whitespaces.

Reported by address sanitizer:

    istream qp decoder 1 ................................................. : ok
    istream qp decoder 2 ................................................. : ok
    istream qp decoder 3 ................................................. : ok
    istream qp decoder 4 ................................................. : ok
    istream qp decoder 5 ................................................. : ok
    istream qp decoder 6 ................................................. : ok
    istream qp decoder 7 ................................................. : ok
    istream qp decoder 8 ................................................. : ok
    istream qp decoder 9 ................................................. : ok
    =================================================================
    ==135439==ERROR: AddressSanitizer: global-buffer-overflow on address 0x561b9fbf5489 at pc 0x561b9fb2601d bp 0x7fffdea7cba0 sp 0x7fffdea7cb98
    READ of size 1 at 0x561b9fbf5489 thread T0
        #0 0x561b9fb2601c in get_encoding_size_diff src/lib-mail/test-istream-qp-decoder.c:76
        dovecot#1 0x561b9fb2601c in decode_test src/lib-mail/test-istream-qp-decoder.c:160
        dovecot#2 0x561b9fb2601c in test_istream_qp_decoder src/lib-mail/test-istream-qp-decoder.c:183
        dovecot#3 0x561b9fb1c97a in test_run_funcs ../lib-test/test-common.c:346
        dovecot#4 0x561b9fb1cb1a in test_run ../lib-test/test-common.c:417
        dovecot#5 0x561b9fb1cb35 in main src/lib-mail/test-istream-qp-decoder.c:196
        dovecot#6 0x7f8d59240c89  (/lib/x86_64-linux-gnu/libc.so.6+0x29c89) (BuildId: 652dfccae16d17796a09de192ed332fd65dc9abb)
        dovecot#7 0x7f8d59240d44 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x29d44) (BuildId: 652dfccae16d17796a09de192ed332fd65dc9abb)
        dovecot#8 0x561b9fb05bc0 in _start (/build/dovecot-2.3.21+dfsg1/src/lib-mail/test-istream-qp-decoder+0x184bc0) (BuildId: c3eb31a408186312e51514f84e299274e772e6ae)

    0x561b9fbf5489 is located 55 bytes before global variable '*.LC247' defined in './test-istream-qp-decoder.ltrans0.ltrans' (0x561b9fbf54c0) of size 3
      '*.LC247' is ascii string '
    '
    0x561b9fbf5489 is located 0 bytes after global variable '*.LC246' defined in './test-istream-qp-decoder.ltrans0.ltrans' (0x561b9fbf5480) of size 9
      '*.LC246' is ascii string '=0A=0D  '
    SUMMARY: AddressSanitizer: global-buffer-overflow src/lib-mail/test-istream-qp-decoder.c:76 in get_encoding_size_diff
    Shadow bytes around the buggy address:
      0x561b9fbf5200: f9 f9 f9 f9 00 00 03 f9 f9 f9 f9 f9 00 00 00 01
      0x561b9fbf5280: f9 f9 f9 f9 00 00 03 f9 f9 f9 f9 f9 00 00 06 f9
      0x561b9fbf5300: f9 f9 f9 f9 00 02 f9 f9 f9 f9 f9 f9 00 00 00 02
      0x561b9fbf5380: f9 f9 f9 f9 00 00 00 00 03 f9 f9 f9 f9 f9 f9 f9
      0x561b9fbf5400: 05 f9 f9 f9 f9 f9 f9 f9 03 f9 f9 f9 f9 f9 f9 f9
    =>0x561b9fbf5480: 00[01]f9 f9 f9 f9 f9 f9 03 f9 f9 f9 f9 f9 f9 f9
      0x561b9fbf5500: 00 f9 f9 f9 f9 f9 f9 f9 03 f9 f9 f9 f9 f9 f9 f9
      0x561b9fbf5580: 05 f9 f9 f9 f9 f9 f9 f9 07 f9 f9 f9 f9 f9 f9 f9
      0x561b9fbf5600: 00 01 f9 f9 f9 f9 f9 f9 00 00 03 f9 f9 f9 f9 f9
      0x561b9fbf5680: 07 f9 f9 f9 f9 f9 f9 f9 00 00 00 04 f9 f9 f9 f9
      0x561b9fbf5700: 00 00 00 f9 f9 f9 f9 f9 07 f9 f9 f9 f9 f9 f9 f9
    Shadow byte legend (one shadow byte represents 8 application bytes):
      Addressable:           00
      Partially addressable: 01 02 03 04 05 06 07
      Heap left redzone:       fa
      Freed heap region:       fd
      Stack left redzone:      f1
      Stack mid redzone:       f2
      Stack right redzone:     f3
      Stack after return:      f5
      Stack use after scope:   f8
      Global redzone:          f9
      Global init order:       f6
      Poisoned by user:        f7
      Container overflow:      fc
      Array cookie:            ac
      Intra object redzone:    bb
      ASan internal:           fe
      Left alloca redzone:     ca
      Right alloca redzone:    cb
    ==135439==ABORTING

Fixes: e3b45a1 ("lib-mail: Extend quoted-printable decoding tests")
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