Bug#873945: apache2-bin: apache2 with http2 segfault
Title: apache2-bin: apache2 with http2 segfault
Package: apache2-bin
Version: 2.4.25-3+deb9u2
Severity: important
Dear Maintainer,
*** Reporter, please consider answering these questions, where appropriate ***
* What led up to the situation?
SEGFAULT Apache2 with http2, just by having users visiting the site.
gdb /usr/sbin/apache2 core-apache2-11-33-33-16474-1504205745
GNU gdb (Debian 7.12-6) 7.12.0.20161007-git
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Reading symbols from /usr/sbin/apache2...Reading symbols from /usr/lib/debug/.build-id/1b/81c3ec196acae651912c3a4025bc1c6a07c375.debug...done.
done.
[New LWP 16532]
[New LWP 16477]
[New LWP 16474]
[New LWP 16475]
[New LWP 16479]
[New LWP 16476]
[New LWP 16480]
[New LWP 16481]
[New LWP 16511]
[New LWP 16478]
[New LWP 16487]
[New LWP 16482]
[New LWP 16512]
[New LWP 16489]
[New LWP 16483]
[New LWP 16491]
[New LWP 16494]
[New LWP 16513]
[New LWP 16484]
[New LWP 16499]
[New LWP 16485]
[New LWP 16500]
[New LWP 16516]
[New LWP 16502]
[New LWP 16486]
[New LWP 16504]
[New LWP 16517]
[New LWP 16488]
[New LWP 16506]
[New LWP 16507]
[New LWP 16490]
[New LWP 16518]
[New LWP 16492]
[New LWP 16509]
[New LWP 16514]
[New LWP 16519]
[New LWP 16522]
[New LWP 16527]
[New LWP 16520]
[New LWP 16523]
[New LWP 16524]
[New LWP 16525]
[New LWP 16529]
[New LWP 16495]
[New LWP 16533]
[New LWP 16496]
[New LWP 16497]
[New LWP 16535]
[New LWP 16498]
[New LWP 16501]
[New LWP 16536]
[New LWP 16503]
[New LWP 16537]
[New LWP 16505]
[New LWP 16510]
[New LWP 16515]
[New LWP 16521]
[New LWP 16526]
[New LWP 16528]
[New LWP 16530]
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[New LWP 16534]
[New LWP 16538]
[New LWP 16539]
[New LWP 16540]
[New LWP 16541]
[New LWP 16493]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/sbin/apache2 -k start'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 h2_stream_out_prepare (stream=stream@entry=0x7ff7772330a0, plen=plen@entry=0x7ff77cfe89e0, peos=peos@entry=0x7ff77cfe89dc, presponse=presponse@entry=0x7ff77cfe89e8) at h2_stream.c:604
604 h2_stream.c: No such file or directory.
[Current thread is 1 (Thread 0x7ff77cfe9700 (LWP 16532))]
(gdb) bt
#0 h2_stream_out_prepare (stream=stream@entry=0x7ff7772330a0, plen=plen@entry=0x7ff77cfe89e0, peos=peos@entry=0x7ff77cfe89dc, presponse=presponse@entry=0x7ff77cfe89e8) at h2_stream.c:604
#1 0x00007ff7ae7bb6cb in on_stream_resume (ctx=0x7ff7768410a0, stream=0x7ff7772330a0) at h2_session.c:1576
#2 0x00007ff7ae7b2e3b in h2_mplx_dispatch_master_events (m=0x7ff7768412d0, _on_resume_=on_resume@entry=0x7ff7ae7bb500 <on_stream_resume>, _on_ctx_=on_ctx@entry=0x7ff7768410a0) at h2_mplx.c:1379
#3 0x00007ff7ae7bc7ab in h2_session_process (session=0x7ff7768410a0, async=async@entry=1) at h2_session.c:2210
#4 0x00007ff7ae7a8b2a in h2_conn_run (ctx=ctx@entry=0x7ff78c144360, c=c@entry=0x7ff78c14b348) at h2_conn.c:212
#5 0x00007ff7ae7aea5b in h2_h2_process_conn (c=0x7ff78c14b348) at h2_h2.c:658
#6 0x0000558b46d1e6f0 in ap_run_process_connection (c=c@entry=0x7ff78c14b348) at connection.c:42
#7 0x00007ff7ad8976e8 in process_socket (my_thread_num=<optimized out>, my_child_num=<optimized out>, cs=0x7ff78c14b2b8, sock=<optimized out>, p=0x7ff78c14b028, thd=<optimized out>) at event.c:1099
#8 worker_thread (thd=<optimized out>, dummy=<optimized out>) at event.c:2003
#9 0x00007ff7b1862494 in start_thread (arg=0x7ff77cfe9700) at pthread_create.c:333
#10 0x00007ff7b15a4aff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97
* What exactly did you do (or not do) that was effective (or ineffective)?
http2 enabled caused it, disable module fixes it immediately
-- Package-specific info:
-- System Information:
Debian Release: 9.1
APT prefers stable
APT policy: (500, 'stable')
Architecture: amd64 (x86_64)
Kernel: Linux 4.9.0-3-amd64 (SMP w/3 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
Versions of packages apache2-bin depends on:
ii libapr1 1.5.2-5
ii libaprutil1 1.5.4-3
ii libaprutil1-dbd-sqlite3 1.5.4-3
ii libaprutil1-ldap 1.5.4-3
ii libc6 2.24-11+deb9u1
ii libldap-2.4-2 2.4.44+dfsg-5
ii liblua5.2-0 5.2.4-1.1+b2
ii libnghttp2-14 1.18.1-1
ii libpcre3 2:8.39-3
ii libssl1.0.2 1.0.2l-2
ii libxml2 2.9.4+dfsg1-2.2+deb9u1
ii perl 5.24.1-3+deb9u1
ii zlib1g 1:1.2.8.dfsg-5
apache2-bin recommends no packages.
Versions of packages apache2-bin suggests:
pn apache2-doc <none>
pn apache2-suexec-pristine | apache2-suexec-custom <none>
ii w3m [www-browser] 0.5.3-34
Versions of packages apache2 depends on:
ii apache2-data 2.4.25-3+deb9u2
ii apache2-utils 2.4.25-3+deb9u2
ii dpkg 1.18.24
ii init-system-helpers 1.48
ii lsb-base 9.20161125
ii mime-support 3.60
ii perl 5.24.1-3+deb9u1
ii procps 2:3.3.12-3
Versions of packages apache2 recommends:
ii ssl-cert 1.0.39
Versions of packages apache2 suggests:
pn apache2-doc <none>
pn apache2-suexec-pristine | apache2-suexec-custom <none>
ii w3m [www-browser] 0.5.3-34
Versions of packages apache2-bin is related to:
ii apache2 2.4.25-3+deb9u2
ii apache2-bin 2.4.25-3+deb9u2
-- no debconf information
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