[FFmpeg-trac] #7252(ffplay:reopened): SIGSEGV when the ffplay is terminated with Ctrl+C before video appears
FFmpeg
trac at avcodec.org
Mon Jun 11 10:04:20 EEST 2018
#7252: SIGSEGV when the ffplay is terminated with Ctrl+C before video appears
-------------------------------------+-------------------------------------
Reporter: KTSamy | Owner:
Type: defect | Status: reopened
Priority: important | Component: ffplay
Version: git-master | Resolution:
Keywords: SIGSEGV | Blocked By:
crash | Reproduced by developer: 0
Blocking: |
Analyzed by developer: 0 |
-------------------------------------+-------------------------------------
Changes (by KTSamy):
* status: closed => reopened
* resolution: needs_more_info =>
* component: undetermined => ffplay
Comment:
I have just realized that keys strokes are not captured by the terminal
window as it was out of focus. The keys are captured by the ffplay & it
results in SIGSEGV.
GDB 8.1 Seems to be broken on MacOS High Sierra. So, used 8.0.1 to collect
the details you have requested. ffplay is build from the latest master
branch (8c20ea8ee0).
{{{
ktsamy:ffmpeg-8c20ea8ee0 thiru$ gdb ffplay_g
GNU gdb (GDB) 8.0.1
Copyright (C) 2017 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later
<http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-apple-darwin17.6.0".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ffplay_g...done.
(gdb) r https://bitdash-a.akamaihd.net/content/sintel/hls/playlist.m3u8
Starting program: /Users/Shared/Workspace/ffmpeg/Workspace/ffmpeg-
8c20ea8ee0/ffplay_g
https://bitdash-a.akamaihd.net/content/sintel/hls/playlist.m3u8
[New Thread 0xc03 of process 31172]
warning: unhandled dyld version (15)
ffplay version 3.4.git Copyright (c) 2003-2018 the FFmpeg developers
built with Apple LLVM version 9.0.0 (clang-900.0.39.2)
configuration: --enable-static --disable-shared --disable-doc --enable-
gpl --enable-version3 --enable-nonfree --enable-pthreads --pkg-config-
flags=--static --enable-libxml2 --enable-gmp --enable-gnutls --enable-sdl2
libavutil 56. 18.102 / 56. 18.102
libavcodec 58. 20.101 / 58. 20.101
libavformat 58. 17.100 / 58. 17.100
libavdevice 58. 4.100 / 58. 4.100
libavfilter 7. 25.100 / 7. 25.100
libswscale 5. 2.100 / 5. 2.100
libswresample 3. 2.100 / 3. 2.100
libpostproc 55. 2.100 / 55. 2.100
[hls,applehttp @ 0x10300c200] Opening
'https://bitdash-a.akamaihd.net/content/sintel/hls/audio/stereo/en/128kbit.m3u8'
for reading
[New Thread 0xa07 of process 31172]0KB vq= 0KB sq= 0B f=0/0
[New Thread 0x1503 of process 31172]
[New Thread 0x1603 of process 31172]
[New Thread 0x1703 of process 31172]
[New Thread 0x1803 of process 31172]
[New Thread 0x1903 of process 31172]
[New Thread 0x1a03 of process 31172]
[New Thread 0x2803 of process 31172]
[New Thread 0x2903 of process 31172]
Thread 2 received signal SIGSEGV, Segmentation fault.
stream_cycle_channel (is=0x10be00000, codec_type=0) at
fftools/ffplay.c:3109
3109 int nb_streams = is->ic->nb_streams;
(gdb) bt
#0 stream_cycle_channel (is=0x10be00000, codec_type=0) at
fftools/ffplay.c:3109
#1 0x0000000100009a37 in event_loop (cur_stream=<optimized out>) at
fftools/ffplay.c:3292
#2 main (argc=<optimized out>, argv=<optimized out>) at
fftools/ffplay.c:3735
(gdb) disass $pc-32,$pc+32
Dump of assembler code from 0x10000f945 to 0x10000f985:
0x000000010000f945 <stream_toggle_pause+501>: add $0x8,%rsp
0x000000010000f949 <stream_toggle_pause+505>: pop %rbx
0x000000010000f94a <stream_toggle_pause+506>: pop %rbp
0x000000010000f94b <stream_toggle_pause+507>: retq
0x000000010000f94c: nopl 0x0(%rax)
0x000000010000f950 <stream_cycle_channel+0>: push %rbp
0x000000010000f951 <stream_cycle_channel+1>: push %r15
0x000000010000f953 <stream_cycle_channel+3>: push %r14
0x000000010000f955 <stream_cycle_channel+5>: push %r13
0x000000010000f957 <stream_cycle_channel+7>: push %r12
0x000000010000f959 <stream_cycle_channel+9>: push %rbx
0x000000010000f95a <stream_cycle_channel+10>: push %rax
0x000000010000f95b <stream_cycle_channel+11>: mov %esi,%r12d
0x000000010000f95e <stream_cycle_channel+14>: mov %rdi,%r15
0x000000010000f961 <stream_cycle_channel+17>: mov
0x48(%r15),%rdi
=> 0x000000010000f965 <stream_cycle_channel+21>: mov
0x2c(%rdi),%r13d
0x000000010000f969 <stream_cycle_channel+25>: test %r12d,%r12d
0x000000010000f96c <stream_cycle_channel+28>: je 0x10000f984
<stream_cycle_channel+52>
0x000000010000f96e <stream_cycle_channel+30>: cmp $0x1,%r12d
0x000000010000f972 <stream_cycle_channel+34>: jne 0x10000f9aa
<stream_cycle_channel+90>
0x000000010000f974 <stream_cycle_channel+36>: lea
0x10196c(%r15),%rax
0x000000010000f97b <stream_cycle_channel+43>: lea
0x16f0(%r15),%rcx
0x000000010000f982 <stream_cycle_channel+50>: jmp 0x10000f9b8
<stream_cycle_channel+104>
---Type <return> to continue, or q <return> to quit---
0x000000010000f984 <stream_cycle_channel+52>: mov
0x1018b8(%r15),%r14d
End of assembler dump.
(gdb) info all-registers
rax 0x100009a2d 4295006765
rbx 0x0 0
rcx 0x48 72
rdx 0x100009dfc 4295007740
rsi 0x0 0
rdi 0x0 0
rbp 0x7ffeefbff6e8 0x7ffeefbff6e8
rsp 0x7ffeefbff640 0x7ffeefbff640
r8 0x10271fbb0 4335991728
r9 0x40 64
r10 0x10271fba8 4335991720
r11 0xffffffffffffffff -1
r12 0x0 0
r13 0x10be00000 4494196736
r14 0x7ffeefbff6e4 140732920755940
r15 0x10be00000 4494196736
rip 0x10000f965 0x10000f965 <stream_cycle_channel+21>
eflags 0x10246 [ PF ZF IF RF ]
cs 0x2b 43
ss <unavailable>
ds <unavailable>
es <unavailable>
fs 0x0 0
gs 0x0 0
---Type <return> to continue, or q <return> to quit---
st0 -nan(0x00002cd37) (raw 0xffff000000000002cd37)
st1 -nan(0x1ffffed351bef) (raw 0xffff0001ffffed351bef)
st2 -nan(0x00001ffff) (raw 0xffff000000000001ffff)
st3 0 (raw 0x00000000000000000000)
st4 0 (raw 0x00000000000000000000)
st5 5000000000 (raw 0x401f9502f90000000000)
st6 2575127221723 (raw 0x402895e462c576c00000)
st7 2575.1272217230001604360012379402178 (raw
0x400aa0f20919a53a05fb)
fctrl 0x37f 895
fstat 0x220 544
ftag 0xffff 65535
fiseg 0x7fff 32767
fioff 0x369b6db5 916155829
foseg 0x0 0
fooff 0x0 0
fop 0x0 0
xmm0 {v4_float = {0x15c28, 0x1, 0x0, 0x0}, v2_double = {0x0,
0x0}, v16_int8 = {0x7b, 0x14, 0xae, 0x47, 0xe1, 0x7a, 0x84, 0x3f,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0x147b, 0x47ae,
0x7ae1, 0x3f84, 0x0, 0x0, 0x0, 0x0}, v4_int32 = {0x47ae147b,
0x3f847ae1, 0x0, 0x0}, v2_int64 = {0x3f847ae147ae147b, 0x0}, uint128 =
0x00000000000000003f847ae147ae147b}
xmm1 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0},
v16_int8 = {0x0 <repeats 16 times>}, v8_int16 = {0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0}, v4_int32 = {0x0, 0x0, 0x0, 0x0}, v2_int64 =
{0x0, 0x0}, uint128 = 0x00000000000000000000000000000000}
xmm2 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0},
v16_int8 = {0x0 <repeats 16 times>}, v8_int16 = {0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0}, v4_int32 = {0x0, 0x0, 0x0, 0x0}, v2_int64 =
{0x0, 0x0}, uint128 = 0x00000000000000000000000000000000}
xmm3 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0},
v16_int8 = {0x0 <repeats 16 times>}, v8_int16 = {0x0, 0x0, 0x0,
---Type <return> to continue, or q <return> to quit---
0x0, 0x0, 0x0, 0x0, 0x0}, v4_int32 = {0x0, 0x0, 0x0, 0x0}, v2_int64 =
{0x0, 0x0}, uint128 = 0x00000000000000000000000000000000}
xmm4 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0},
v16_int8 = {0x0 <repeats 16 times>}, v8_int16 = {0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0}, v4_int32 = {0x0, 0x0, 0x0, 0x0}, v2_int64 =
{0x0, 0x0}, uint128 = 0x00000000000000000000000000000000}
xmm5 {v4_float = {0x0, 0x1dfff, 0x0, 0x0}, v2_double =
{0x8000000000000000, 0x0}, v16_int8 = {0x0, 0x0, 0x0, 0xe0, 0xff, 0xff,
0xef, 0x47, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0x0,
0xe000, 0xffff, 0x47ef, 0x0, 0x0, 0x0, 0x0}, v4_int32 = {
0xe0000000, 0x47efffff, 0x0, 0x0}, v2_int64 = {0x47efffffe0000000,
0x0}, uint128 = 0x000000000000000047efffffe0000000}
xmm6 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0},
v16_int8 = {0x0 <repeats 16 times>}, v8_int16 = {0x0, 0x0, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0}, v4_int32 = {0x0, 0x0, 0x0, 0x0}, v2_int64 =
{0x0, 0x0}, uint128 = 0x00000000000000000000000000000000}
xmm7 {v4_float = {0x0, 0xffffffe7, 0x0, 0x0}, v2_double =
{0xffffffffc0000001, 0x0}, v16_int8 = {0x0, 0x0, 0x80, 0xff, 0xff,
0xff, 0xcf, 0xc1, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 =
{0x0, 0xff80, 0xffff, 0xc1cf, 0x0, 0x0, 0x0, 0x0}, v4_int32 = {
0xff800000, 0xc1cfffff, 0x0, 0x0}, v2_int64 = {0xc1cfffffff800000,
0x0}, uint128 = 0x0000000000000000c1cfffffff800000}
xmm8 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0},
v16_int8 = {0x20, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x20, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0x20, 0x0, 0x0, 0x0, 0x20,
0x0, 0x0, 0x0}, v4_int32 = {0x20, 0x0, 0x20, 0x0}, v2_int64 = {
0x20, 0x20}, uint128 = 0x00000000000000200000000000000020}
xmm9 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0},
v16_int8 = {0x24, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x24, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0x24, 0x0, 0x0, 0x0, 0x24,
0x0, 0x0, 0x0}, v4_int32 = {0x24, 0x0, 0x24, 0x0}, v2_int64 = {
0x24, 0x24}, uint128 = 0x00000000000000240000000000000024}
xmm10 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0},
v16_int8 = {0x28, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x28, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0x28, 0x0, 0x0, 0x0, 0x28,
0x0, 0x0, 0x0}, v4_int32 = {0x28, 0x0, 0x28, 0x0}, v2_int64 = {
0x28, 0x28}, uint128 = 0x00000000000000280000000000000028}
xmm11 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0},
v16_int8 = {0x2c, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x2c, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0x2c, 0x0, 0x0, 0x0, 0x2c,
0x0, 0x0, 0x0}, v4_int32 = {0x2c, 0x0, 0x2c, 0x0}, v2_int64 = {
0x2c, 0x2c}, uint128 = 0x000000000000002c000000000000002c}
xmm12 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0},
v16_int8 = {0x30, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x30, 0x0,
---Type <return> to continue, or q <return> to quit---
0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0x30, 0x0, 0x0, 0x0, 0x30,
0x0, 0x0, 0x0}, v4_int32 = {0x30, 0x0, 0x30, 0x0}, v2_int64 = {
0x30, 0x30}, uint128 = 0x00000000000000300000000000000030}
xmm13 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0},
v16_int8 = {0x34, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x34, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0x34, 0x0, 0x0, 0x0, 0x34,
0x0, 0x0, 0x0}, v4_int32 = {0x34, 0x0, 0x34, 0x0}, v2_int64 = {
0x34, 0x34}, uint128 = 0x00000000000000340000000000000034}
xmm14 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0},
v16_int8 = {0x38, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x38, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0x38, 0x0, 0x0, 0x0, 0x38,
0x0, 0x0, 0x0}, v4_int32 = {0x38, 0x0, 0x38, 0x0}, v2_int64 = {
0x38, 0x38}, uint128 = 0x00000000000000380000000000000038}
xmm15 {v4_float = {0x0, 0x0, 0x0, 0x0}, v2_double = {0x0, 0x0},
v16_int8 = {0x3c, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x3c, 0x0,
0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, v8_int16 = {0x3c, 0x0, 0x0, 0x0, 0x3c,
0x0, 0x0, 0x0}, v4_int32 = {0x3c, 0x0, 0x3c, 0x0}, v2_int64 = {
0x3c, 0x3c}, uint128 = 0x000000000000003c000000000000003c}
mxcsr 0x1fa1 [ IE PE IM DM ZM OM UM PM ]
}}}
--
Ticket URL: <https://trac.ffmpeg.org/ticket/7252#comment:8>
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