Le 30/04/2025 à 13:42, Colin Watson a écrit :
Is that the complete output from valgrind, or did you edit it down? It's
tantalizingly close to being useful, but it really feels like there
should be more of it. Could I have all of the lines matching
"==4019365=="?
Yes, I pasted a few line to post, sorry. The full log is attached below.
Thanks!
avril 29 19:57:24 odysseus sshd[4019365]: ==4019365== Memcheck, a memory error
detector
avril 29 19:57:24 odysseus sshd[4019365]: ==4019365== Copyright (C) 2002-2024,
and GNU GPL'd, by Julian Seward et al.
avril 29 19:57:24 odysseus sshd[4019365]: ==4019365== Using Valgrind-3.24.0 and
LibVEX; rerun with -h for copyright info
avril 29 19:57:24 odysseus sshd[4019365]: ==4019365== Command:
/usr/lib/openssh/sshd-session -D -R
avril 29 19:57:24 odysseus sshd[4019365]: ==4019365==
avril 29 19:57:25 odysseus sshd-session[4019365]: Connection from fe80::...%br0
port 33120 on fe80::...%br0 port 22 rdomain "br0"
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== Cannot map memory to grow
the stack for thread #1 to 0x1ffeffc000
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365==
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== Process terminating with
default action of signal 11 (SIGSEGV): dumping core
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== Access not within mapped
region at address 0x1FFEFFCD78
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== Cannot map memory to grow
the stack for thread #1 to 0x1ffeffc000
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== at 0x1BCBC9: glob0
(glob.c:476)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== If you believe this
happened as a result of a stack
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== overflow in your
program's main thread (unlikely but
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== possible), you can try
to increase the size of the
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== main thread stack using
the --main-stacksize= flag.
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== The main thread stack
size used in this run was 8388608.
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365==
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== HEAP SUMMARY:
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== in use at exit:
518,960 bytes in 5,557 blocks
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== total heap usage: 8,551
allocs, 2,994 frees, 1,232,620 bytes allocated
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365==
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== 832 (64 direct, 768
indirect) bytes in 1 blocks are definitely lost in loss record 980 of 1,057
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== at 0x484BBA3: calloc
(vg_replace_malloc.c:1675)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x158628:
sshbuf_new (sshbuf.c:97)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x11998C:
pack_hostkeys (sshd-session.c:313)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x13A3C8:
mm_answer_state (monitor.c:626)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x13D66D:
monitor_read (monitor.c:550)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x140B95:
monitor_child_preauth (monitor.c:319)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x118620:
privsep_preauth (sshd-session.c:367)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x118620: main
(sshd-session.c:1320)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365==
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== 4,608 bytes in 2 blocks
are possibly lost in loss record 1,040 of 1,057
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== at 0x4844818: malloc
(vg_replace_malloc.c:446)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x4022605: malloc
(rtld-malloc.h:56)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x4022605:
_dlfo_mappings_segment_allocate (dl-find_object.c:217)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x4022605:
_dl_find_object_update_1 (dl-find_object.c:680)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x4022605:
_dl_find_object_update (dl-find_object.c:814)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x400C5E7:
dl_open_worker_begin (dl-open.c:714)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x4002398:
_dl_catch_exception (dl-catch.c:241)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x400B9A7:
dl_open_worker (dl-open.c:761)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x4002398:
_dl_catch_exception (dl-catch.c:241)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x400BDA7: _dl_open
(dl-open.c:874)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x5169257:
dlopen_doit (dlopen.c:56)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x4002398:
_dl_catch_exception (dl-catch.c:241)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x40024BE:
_dl_catch_error (dl-catch.c:260)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x5168D66:
_dlerror_run (dlerror.c:138)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x5169308:
dlopen_implementation (dlopen.c:71)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x5169308:
dlopen@@GLIBC_2.34 (dlopen.c:81)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365==
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== 4,928 (64 direct, 4,864
indirect) bytes in 1 blocks are definitely lost in loss record 1,043 of 1,057
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== at 0x484BBA3: calloc
(vg_replace_malloc.c:1675)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x158628:
sshbuf_new (sshbuf.c:97)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x13A332:
mm_answer_state (monitor.c:611)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x13D66D:
monitor_read (monitor.c:550)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x140B95:
monitor_child_preauth (monitor.c:319)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x118620:
privsep_preauth (sshd-session.c:367)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== by 0x118620: main
(sshd-session.c:1320)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365==
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== LEAK SUMMARY:
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== definitely lost: 128
bytes in 2 blocks
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== indirectly lost: 5,632
bytes in 2 blocks
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== possibly lost: 4,608
bytes in 2 blocks
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== still reachable:
508,484 bytes in 5,550 blocks
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== suppressed: 108
bytes in 1 blocks
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== Reachable blocks (those
to which a pointer was found) are not shown.
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== To see them, rerun with:
--leak-check=full --show-leak-kinds=all
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365==
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== For lists of detected and
suppressed errors, rerun with: -s
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== ERROR SUMMARY: 3 errors
from 3 contexts (suppressed: 0 from 0)
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== could not unlink
/tmp/vgdb-pipe-from-vgdb-to-4019365-by-root-on-???
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== could not unlink
/tmp/vgdb-pipe-to-vgdb-from-4019365-by-root-on-???
avril 29 19:57:25 odysseus sshd[4019365]: ==4019365== could not unlink
/tmp/vgdb-pipe-shared-mem-vgdb-4019365-by-root-on-???
avril 29 19:57:25 odysseus systemd-coredump[4019403]: Process 4019365
(memcheck-amd64-) of user 0 terminated abnormally with signal 11/SEGV,
processing...
avril 29 19:57:25 odysseus systemd[1]: Started
systemd-coredump@15-4019403-0.service - Process Core Dump (PID 4019403/UID 0).
avril 29 19:57:25 odysseus systemd-coredump[4019404]: Resource limits disable
core dumping for process 4019365 (memcheck-amd64-).
avril 29 19:57:25 odysseus systemd-coredump[4019404]: [🡕] Process 4019365
(memcheck-amd64-) of user 0 terminated abnormally without generating a coredump.
avril 29 19:57:25 odysseus systemd[1]: systemd-coredump@15-4019403-0.service:
Deactivated successfully.
avril 29 19:57:25 odysseus sshd[3617816]: error: session process 4019365 for
connection from fe80::...%br0 to fe80::...%br0 killed by signal 11
avril 29 19:57:25 odysseus sshd[3617816]: srclimit_penalise: ipv6: new
fe80::...%br0/128 active penalty of 90 seconds for penalty: caused crash
avril 29 19:57:48 odysseus sshd[3617816]: drop connection #0 from
[fe80::...%br0]:43934 on [fe80::...%br0]:22 penalty: caused crash
