https://bz.apache.org/bugzilla/show_bug.cgi?id=70004
Bug ID: 70004
Summary: Segmentation fault - mod_http2
Product: Apache httpd-2
Version: 2.4.66
Hardware: PC
OS: Linux
Status: NEW
Severity: normal
Priority: P2
Component: mod_http2
Assignee: [email protected]
Reporter: [email protected]
Target Milestone: ---
CloudLinux release 8.10 (Vladimir Aksyonov)
4.18.0-553.104.1.lve.el8.x86_64 #1 SMP Tue Feb 10 20:07:30 UTC 2026 x86_64
x86_64 x86_64 GNU/Linux
httpd -V
Server version: Apache/2.4.66 (Unix)
Server built: Dec 22 2025 15:19:13
Server's Module Magic Number: 20120211:141
Server loaded: APR 1.7.6, APR-UTIL 1.6.3, PCRE 10.32 2018-09-10
Compiled using: APR 1.7.6, APR-UTIL 1.6.3, PCRE 10.32 2018-09-10
Architecture: 64-bit
Server MPM: worker
threaded: yes (fixed thread count)
forked: yes (variable process count)
Server compiled with....
-D APR_HAS_SENDFILE
-D APR_HAS_MMAP
-D APR_HAVE_IPV6 (IPv4-mapped addresses enabled)
-D APR_USE_PROC_PTHREAD_SERIALIZE
-D APR_USE_PTHREAD_SERIALIZE
-D SINGLE_LISTEN_UNSERIALIZED_ACCEPT
-D APR_HAS_OTHER_CHILD
-D AP_HAVE_RELIABLE_PIPED_LOGS
-D DYNAMIC_MODULE_LIMIT=256
-D HTTPD_ROOT="/etc/httpd"
-D SUEXEC_BIN="/usr/sbin/suexec"
-D DEFAULT_PIDLOG="/var/logs/httpd.pid"
-D DEFAULT_SCOREBOARD="logs/apache_runtime_status"
-D DEFAULT_ERRORLOG="logs/error_log"
-D AP_TYPES_CONFIG_FILE="conf/mime.types"
-D SERVER_CONFIG_FILE="conf/httpd.conf"
Apache error.log:
[Thu Apr 16 21:19:55.471911 2026] [core:notice] [pid 3650688:tid 3650688]
AH00051: child pid 1288013 exit signal Segmentation fault (11), possible
coredump in /etc/httpd
Bt full:
(gdb) bt full
#0 find_entry (ht=0x7f4d58019c10, key=key@entry=0x7f4b737fdc2c,
klen=<optimized out>, klen@entry=4, val=val@entry=0x0) at tables/apr_hash.c:301
hep = 0x7f4d5801b968
he = 0xc5000000b5
hash = 269
#1 0x00007f4d8edd800b in apr_hash_get (ht=<optimized out>,
key=key@entry=0x7f4b737fdc2c, klen=klen@entry=4) at tables/apr_hash.c:367
he = <optimized out>
#2 0x0000000000542aba in h2_ihash_get (ih=<optimized out>, id=<optimized out>,
id@entry=269) at h2_util.c:245
No locals.
#3 0x0000000000531770 in s_next_c2 (m=<optimized out>) at h2_mplx.c:918
stream = 0x0
rv = <optimized out>
transit = <optimized out>
sid = 269
c2 = <optimized out>
stream = <optimized out>
rv = <optimized out>
sid = <optimized out>
c2 = <optimized out>
transit = <optimized out>
#4 c2_prod_next (baton=0x7f4cc00653e8, phas_more=0x7f4b737fdcbc) at
h2_mplx.c:969
m = 0x7f4cc00653e8
c = 0x0
#5 0x0000000000545110 in get_next (slot=0xc0fa828) at h2_workers.c:212
workers = 0xc0f8f00
c = 0x0
prod = 0x7f4d5801a490
has_more = 0
workers = <optimized out>
c = <optimized out>
prod = <optimized out>
has_more = <optimized out>
#6 slot_run (thread=0x7f4b6c00ad30, wctx=0xc0fa828) at h2_workers.c:251
slot = 0xc0fa828
workers = 0xc0f8f00
c = <optimized out>
rv = <optimized out>
#7 0x00007f4d8e56f1ca in start_thread (arg=<optimized out>) at
pthread_create.c:479
ret = <optimized out>
pd = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139962037036800,
-4006814681255569769, 139962045426654, 139962045426655, 202346440,
139962037034432, 3959237714614752919,
3963154388291360407}, mask_was_saved = 0}}, priv = {pad = {0x0,
0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
#8 0x00007f4d8dfc6953 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
No locals.
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