https://bz.apache.org/bugzilla/show_bug.cgi?id=66465
Bug ID: 66465
Summary: SIGBUS crashes
Product: Apache httpd-2
Version: 2.4.54
Hardware: PC
OS: Linux
Status: NEW
Severity: major
Priority: P2
Component: All
Assignee: bugs@httpd.apache.org
Reporter: marek.sv...@gmail.com
Target Milestone: ---
We see a lot of SIGBUS crashes with 2.4.54 lately. We can't reproduce it in lab
– it's our customers' production sites, so we can't just take their data or
experiment with their setup either.
It's a Gentoo based custom Linux system and worker MPM.
Core was generated by `/usr/sbin/httpd -DFOREGROUND -f
/etc/apache/https/httpd.conf'.
Program terminated with signal SIGBUS, Bus error.
#0 __memmove_evex_unaligned_erms () at
../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:348
348 ../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S: No such file
or directory.
[Current thread is 1 (Thread 0x7f9476822640 (LWP 34724))]
(gdb) bt full
#0 __memmove_evex_unaligned_erms () at
../sysdeps/x86_64/multiarch/memmove-vec-unaligned-erms.S:348
No locals.
#1 0x00007f948770f34b in memcpy (__len=32768, __src=<optimized out>,
__dest=<optimized out>) at /usr/include/bits/string_fortified.h:29
No locals.
#2 read_buf (strm=0x7f9284087cd8, buf=<optimized out>, size=size@entry=32768)
at /home/build/zlib-1.2.13/deflate.c:1227
len = 32768
#3 0x00007f948770f3fb in fill_window (s=s@entry=0x7f9284000b60) at
/home/build/zlib-1.2.13/deflate.c:1581
n = <optimized out>
more = 32768
wsize = 32768
#4 0x00007f948770f8c2 in deflate_slow (s=0x7f9284000b60, flush=0) at
/home/build/zlib-1.2.13/deflate.c:1994
hash_head = <optimized out>
bflush = <optimized out>
#5 0x00007f948771108e in deflate (strm=strm@entry=0x7f9284087cd8,
flush=flush@entry=0) at /home/build/zlib-1.2.13/deflate.c:1057
bstate = <optimized out>
old_flush = <optimized out>
s = 0x7f9284000b60
#6 0x0000556c9f2cefed in deflate_out_filter (f=<optimized out>,
bb=0x7f9284087c90) at mod_deflate.c:987
b = <optimized out>
e = 0x7f92840ad188
r = 0x7f92840526e0
ctx = 0x7f9284087cd8
zRC = <optimized out>
len = 306843
blen = 306843
data = 0x7f9486109000 ""
c = <optimized out>
#7 0x0000556c9f2cb66a in filter_harness (f=0x7f9284087ac0, bb=0x7f9284087c90)
at mod_filter.c:323
ret = <optimized out>
cachecontrol = <optimized out>
ctx = 0x7f9284087b10
filter = <optimized out>
#8 0x00007f948658b37a in output_filter (f=0x7f9284087a90, bb_in=<optimized
out>) at apache2_io.c:1054
r = <optimized out>
msr = 0x7f9284054678
bucket = <optimized out>
eos_bucket = <optimized out>
rc = <optimized out>
start_skipping = <optimized out>
#9 0x0000556c9f29687e in default_handler (r=0x7f92840526e0) at core.c:4997
c = 0x7f928407c5e0
bb = 0x7f9284087c90
e = <optimized out>
d = 0x7f928404eb38
errstatus = <optimized out>
fd = 0x7f9284087b28
status = <optimized out>
bld_content_md5 = <optimized out>
#10 0x0000556c9f2a6240 in ap_run_handler (r=r@entry=0x7f92840526e0) at
config.c:170
pHook = <optimized out>
n = 14
rv = -1
#11 0x0000556c9f2a8df6 in ap_invoke_handler (r=r@entry=0x7f92840526e0) at
config.c:448
handler = <optimized out>
p = <optimized out>
result = 0
old_handler = 0x0
ignore = <optimized out>
#12 0x0000556c9f2d7ae8 in ap_process_async_request (r=r@entry=0x7f92840526e0)
at http_request.c:452
c = 0x7f928407c5e0
access_status = 0
#13 0x0000556c9f2d7d1f in ap_process_request (r=r@entry=0x7f92840526e0) at
http_request.c:487
bb = 0x7f92840526e0
b = <optimized out>
c = 0x7f928407c5e0
rv = <optimized out>
#14 0x00007f948664c475 in h2_task_process_request (c=0x7f928407c5e0,
task=<optimized out>) at h2_task.c:671
req = <optimized out>
cs = <optimized out>
r = 0x7f92840526e0
req = <optimized out>
cs = <optimized out>
r = <optimized out>
#15 h2_task_process_conn (c=0x7f928407c5e0) at h2_task.c:713
--Type <RET> for more, q to quit, c to continue without paging--
ctx = <optimized out>
ctx = <optimized out>
#16 h2_task_process_conn (c=0x7f928407c5e0) at h2_task.c:700
ctx = <optimized out>
#17 0x0000556c9f2b2580 in ap_run_process_connection (c=c@entry=0x7f928407c5e0)
at connection.c:42
pHook = <optimized out>
n = 1
rv = -1
#18 0x00007f948664d1d2 in h2_task_do (task=0x7f92840a90e0,
thread=thread@entry=0x556c9f9759f0, worker_id=<optimized out>) at h2_task.c:631
c = 0x7f928407c5e0
#19 0x00007f9486650cca in slot_run (thread=0x556c9f9759f0, wctx=0x556c9f8ce080)
at h2_workers.c:263
slot = 0x556c9f8ce080
#20 0x00007f9487417777 in start_thread (arg=<optimized out>) at
pthread_create.c:435
ret = <optimized out>
pd = <optimized out>
out = <optimized out>
unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140275620128320,
9186818040044405033, 140275620128320, 0, 140275901101296, 0,
-9198937240569429719, -9198834409542041303}, mask_was_saved = 0}}, priv = {pad
= {0x0, 0x0, 0x0, 0x0}, data = {
prev = 0x0, cleanup = 0x0, canceltype = 0}}}
not_first_call = <optimized out>
#21 0x00007f948749a3d0 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:100
No locals.
(gdb)
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