Opened 5 years ago
Last modified 5 years ago
#8079 open defect
s5p-mfc: v4l2_m2m segfaults when encoding
| Reported by: | jasaw | Owned by: | Andriy Gelman |
|---|---|---|---|
| Priority: | normal | Component: | avcodec |
| Version: | git-master | Keywords: | v4l2m2m |
| Cc: | Blocked By: | ||
| Blocking: | Reproduced by developer: | no | |
| Analyzed by developer: | no |
Description
Summary of the bug:
ffmpeg segfaults when running encode_video example using h264_v4l2m2m encoder.
How to reproduce:
% ./encode_video <output_file> h264_v4l2m2m ffmpeg version N-94529-g3a557c5d88 (git-master) built on 2018-08-13
Tested on Odroid XU4, kernel 4.14.127-odroidxu4
I sprinkled extra debug prints everywhere in ffmpeg to trace the program path and where it segfaults. Here's the output:
./encode_video test.mp4 h264_v4l2m2m [h264_v4l2m2m @ 0x14993b0] driver 'uvcvideo' on card 'UVC Camera (046d:081b)' [h264_v4l2m2m @ 0x14993b0] driver 'exynos-gsc' on card 'exynos-gsc gscaler' [h264_v4l2m2m @ 0x14993b0] driver 'exynos-gsc' on card 'exynos-gsc gscaler' [h264_v4l2m2m @ 0x14993b0] driver 's5p-mfc' on card 's5p-mfc-enc' [h264_v4l2m2m @ 0x14993b0] Using device /dev/video11 [h264_v4l2m2m @ 0x14993b0] driver 's5p-mfc' on card 's5p-mfc-enc' [h264_v4l2m2m @ 0x14993b0] Encoder does not support b-frames yet [h264_v4l2m2m @ 0x14993b0] h264 profile not found [h264_v4l2m2m @ 0x14993b0] Encoder adjusted: qmin (0), qmax (51) Send frame 0 ffmpeg: avcodec_send_frame called ffmpeg: calling codec->send_frame v4l2_m2m_enc: v4l2_send_frame called v4l2_context: ff_v4l2_context_enqueue_frame called calling ff_v4l2_buffer_avframe_to_buf v4l2_buffers: ff_v4l2_buffer_avframe_to_buf called, out ptr: 0x149b4a0 num_planes = 2 0: v4l2_bufref_to_buf 0: frame ptr = 0x149ea70 0: &frame->buf[0] = 0x149eb68 0: frame->buf[0] = 0x149ec70 0: frame->buf[0]->size = 156800 0: frame->buf[0]->data ptr = 0xb654a020 1: v4l2_bufref_to_buf 1: frame ptr = 0x149ea70 1: &frame->buf[1] = 0x149eb6c 1: frame->buf[1] = (nil) Segmentation fault
Change History (5)
comment:1 by , 5 years ago
comment:2 by , 5 years ago
| Keywords: | v4l2m2m added; v4l2_m2m removed |
|---|
comment:3 by , 5 years ago
backtrace, disassembly and register dump:
gdb --args /tmp/encode_video /tmp/test.mp4 h264_v4l2m2m
GNU gdb (Debian 8.2.1-2) 8.2.1
Copyright (C) 2018 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 "arm-linux-gnueabihf".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<http://www.gnu.org/software/gdb/bugs/>.
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<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from /tmp/encode_video...done.
(gdb) r
Starting program: /tmp/encode_video /tmp/test.mp4 h264_v4l2m2m
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/arm-linux-gnueabihf/libthread_db.so.1".
[h264_v4l2m2m @ 0x14953b0] driver 'uvcvideo' on card 'UVC Camera (046d:081b)'
[h264_v4l2m2m @ 0x14953b0] driver 'exynos-gsc' on card 'exynos-gsc gscaler'
[h264_v4l2m2m @ 0x14953b0] driver 'exynos-gsc' on card 'exynos-gsc gscaler'
[h264_v4l2m2m @ 0x14953b0] driver 's5p-mfc' on card 's5p-mfc-enc'
[h264_v4l2m2m @ 0x14953b0] Using device /dev/video11
[h264_v4l2m2m @ 0x14953b0] driver 's5p-mfc' on card 's5p-mfc-enc'
[h264_v4l2m2m @ 0x14953b0] Encoder does not support b-frames yet
[h264_v4l2m2m @ 0x14953b0] h264 profile not found
[h264_v4l2m2m @ 0x14953b0] Encoder adjusted: qmin (0), qmax (51)
Send frame 0
Program received signal SIGSEGV, Segmentation fault.
0x009e7734 in v4l2_bufref_to_buf (bref=0x0,
size=<error reading variable: Cannot access memory at address 0x8>,
data=<error reading variable: Cannot access memory at address 0x4>,
plane=1, out=0x14974a0) at libavcodec/v4l2_buffers.c:267
267 bytesused = FFMIN(size, out->plane_info[plane].length);
(gdb) bt
#0 0x009e7734 in v4l2_bufref_to_buf (bref=0x0,
size=<error reading variable: Cannot access memory at address 0x8>,
data=<error reading variable: Cannot access memory at address 0x4>,
plane=1, out=0x14974a0) at libavcodec/v4l2_buffers.c:267
#1 ff_v4l2_buffer_avframe_to_buf (frame=frame@entry=0x149aa70,
out=out@entry=0x14974a0) at libavcodec/v4l2_buffers.c:294
#2 0x0098c836 in ff_v4l2_context_enqueue_frame (ctx=0x14972d8,
frame=0x149aa70) at libavcodec/v4l2_context.c:542
#3 0x004cf262 in avcodec_send_frame (avctx=0x14953b0, frame=0x149aa70)
at libavcodec/encode.c:409
#4 0x00466a9a in encode (enc_ctx=0x14953b0, frame=0x149aa70, pkt=0x1495790,
outfile=0x149a908) at encode_video.c:48
#5 0x00466844 in main (argc=<optimized out>, argv=<optimized out>)
at encode_video.c:182
(gdb) disass $pc-32,$pc+32
Dump of assembler code from 0x9e7714 to 0x9e7754:
0x009e7714 <ff_v4l2_buffer_avframe_to_buf+4>: ldr r7, [pc, #960] ; (0x9e7ad8 <ff_v4l2_buffer_buf_to_avframe+712>)
0x009e7716 <ff_v4l2_buffer_avframe_to_buf+6>: cmp r3, #0
0x009e7718 <ff_v4l2_buffer_avframe_to_buf+8>: sub sp, #20
0x009e771a <ff_v4l2_buffer_avframe_to_buf+10>: mov r6, r1
0x009e771c <ff_v4l2_buffer_avframe_to_buf+12>: mov r10, r0
0x009e771e <ff_v4l2_buffer_avframe_to_buf+14>: itttt gt
0x009e7720 <ff_v4l2_buffer_avframe_to_buf+16>: addgt.w r11, r0, #248 ; 0xf8
0x009e7724 <ff_v4l2_buffer_avframe_to_buf+20>: movgt r5, r1
0x009e7726 <ff_v4l2_buffer_avframe_to_buf+22>: movgt r9, r1
0x009e7728 <ff_v4l2_buffer_avframe_to_buf+24>: movgt r7, #0
0x009e772a <ff_v4l2_buffer_avframe_to_buf+26>: ble.n 0x9e7760 <ff_v4l2_buffer_avframe_to_buf+80>
0x009e772c <ff_v4l2_buffer_avframe_to_buf+28>: ldr.w r3, [r11], #4
0x009e7730 <ff_v4l2_buffer_avframe_to_buf+32>: ldrd r0, r8, [r5, #16]
=> 0x009e7734 <ff_v4l2_buffer_avframe_to_buf+36>: ldrd r1, r4, [r3, #4]
0x009e7738 <ff_v4l2_buffer_avframe_to_buf+40>: cmp r4, r8
0x009e773a <ff_v4l2_buffer_avframe_to_buf+42>: it cs
0x009e773c <ff_v4l2_buffer_avframe_to_buf+44>: movcs r4, r8
0x009e773e <ff_v4l2_buffer_avframe_to_buf+46>: mov r2, r4
0x009e7740 <ff_v4l2_buffer_avframe_to_buf+48>: blx 0x42296c <memcpy@plt+4>
0x009e7744 <ff_v4l2_buffer_avframe_to_buf+52>: ldr r3, [r6, #116] ; 0x74
0x009e7746 <ff_v4l2_buffer_avframe_to_buf+54>: subs r3, #9
0x009e7748 <ff_v4l2_buffer_avframe_to_buf+56>: cmp r3, #1
0x009e774a <ff_v4l2_buffer_avframe_to_buf+58>: bls.n 0x9e77ee <ff_v4l2_buffer_avframe_to_buf+222>
0x009e774c <ff_v4l2_buffer_avframe_to_buf+60>: ldr r3, [r6, #108] ; 0x6c
0x009e774e <ff_v4l2_buffer_avframe_to_buf+62>: adds r7, #1
0x009e7750 <ff_v4l2_buffer_avframe_to_buf+64>: str r4, [r6, #120] ; 0x78
0x009e7752 <ff_v4l2_buffer_avframe_to_buf+66>: adds r5, #12
End of assembler dump.
(gdb) info all-registers
r0 0xb68dc000 3062743040
r1 0xb6647d20 3060038944
r2 0x18d00 101632
r3 0x0 0
r4 0x18d00 101632
r5 0x14974ac 21591212
r6 0x14974a0 21591200
r7 0x1 1
r8 0xc680 50816
r9 0x14974dc 21591260
r10 0x149aa70 21604976
r11 0x149ab70 21605232
r12 0xb6901d00 3062897920
sp 0xbefff418 0xbefff418
lr 0x9e7745 10385221
pc 0x9e7734 0x9e7734 <ff_v4l2_buffer_avframe_to_buf+36>
cpsr 0x20080030 537395248
d0 {u8 = {0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81}, u16 = {0x8181, 0x8181, 0x8181, 0x8181}, u32 = {0x81818181, 0x81818181}, u64 = 0x8181818181818181, f32 = {0x0, 0x0}, f64 = 0x0}
d1 {u8 = {0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81, 0x81}, u16 = {0x8181, 0x8181, 0x8181, 0x8181}, u32 = {0x81818181, 0x81818181}, u64 = 0x8181818181818181, f32 = {0x0, 0x0}, f64 = 0x0}
d2 {u8 = {0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80}, u16 = {0x8080, 0x8080, 0x8080, 0x8080}, u32 = {0x80808080, 0x80808080}, u64 = 0x8080808080808080, f32 = {0x0, 0x0}, f64 = 0x0}
d3 {u8 = {0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6}, u16 = {0xa09f, 0xa2a1, 0xa4a3, 0xa6a5}, u32 = {0xa2a1a09f, 0xa6a5a4a3}, u64 = 0xa6a5a4a3a2a1a09f, f32 = {0x0, 0x0}, f64 = 0x0}
d4 {u8 = {0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6}, u16 = {0xe0df, 0xe2e1, 0xe4e3, 0xe6e5}, u32 = {0xe2e1e0df, 0xe6e5e4e3}, u64 = 0xe6e5e4e3e2e1e0df, f32 = {0x0, 0x0}, f64 = 0x8000000000000000}
d5 {u8 = {0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26}, u16 = {0x201f, 0x2221, 0x2423, 0x2625}, u32 = {0x2221201f, 0x26252423}, u64 = 0x262524232221201f, f32 = {0x0, 0x0}, f64 = 0x0}
d6 {u8 = {0x5f, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66}, u16 = {0x605f, 0x6261, 0x6463, 0x6665}, u32 = {0x6261605f, 0x66656463}, u64 = 0x666564636261605f, f32 = {0xffffffff, 0xffffffff}, f64 = 0x7fffffffffffffff}
d7 {u8 = {0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80}, u16 = {0x8080, 0x8080, 0x8080, 0x8080}, u32 = {0x80808080, 0x80808080}, u64 = 0x8080808080808080, f32 = {0x0, 0x0}, f64 = 0x0}
d8 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d9 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d10 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, --Type <RET> for more, q to quit, c to continue without paging--
0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d11 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d12 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d13 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d14 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d15 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d16 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d17 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d18 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d19 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d20 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d21 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d22 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d23 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d24 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d25 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d26 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d27 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d28 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d29 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d30 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
d31 {u8 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u16 = {0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0}, u64 = 0x0, f32 = {0x0, 0x0}, f64 = 0x0}
fpscr 0x60000010 1610612752
s0 -4.7572945e-38 (raw 0x81818181)
s1 -4.7572945e-38 (raw 0x81818181)
--Type <RET> for more, q to quit, c to continue without paging--
s2 -4.7572945e-38 (raw 0x81818181)
s3 -4.7572945e-38 (raw 0x81818181)
s4 -1.18010406e-38 (raw 0x80808080)
s5 -1.18010406e-38 (raw 0x80808080)
s6 -4.38092016e-18 (raw 0xa2a1a09f)
s7 -1.14937998e-15 (raw 0xa6a5a4a3)
s8 -2.08336054e+21 (raw 0xe2e1e0df)
s9 -5.4282207e+23 (raw 0xe6e5e4e3)
s10 2.18365735e-18 (raw 0x2221201f)
s11 5.72948491e-16 (raw 0x26252423)
s12 1.03936542e+21 (raw 0x6261605f)
s13 2.70818433e+23 (raw 0x66656463)
s14 -1.18010406e-38 (raw 0x80808080)
s15 -1.18010406e-38 (raw 0x80808080)
s16 0 (raw 0x00000000)
s17 0 (raw 0x00000000)
s18 0 (raw 0x00000000)
s19 0 (raw 0x00000000)
s20 0 (raw 0x00000000)
s21 0 (raw 0x00000000)
s22 0 (raw 0x00000000)
s23 0 (raw 0x00000000)
s24 0 (raw 0x00000000)
s25 0 (raw 0x00000000)
s26 0 (raw 0x00000000)
s27 0 (raw 0x00000000)
s28 0 (raw 0x00000000)
s29 0 (raw 0x00000000)
s30 0 (raw 0x00000000)
s31 0 (raw 0x00000000)
q0 {u8 = {0x81 <repeats 16 times>}, u16 = {0x8181, 0x8181, 0x8181, 0x8181, 0x8181, 0x8181, 0x8181, 0x8181}, u32 = {0x81818181, 0x81818181, 0x81818181, 0x81818181}, u64 = {0x8181818181818181, 0x8181818181818181}, f32 = {0x0, 0x0, 0x0, 0x0}, f64 = {0x0, 0x0}}
q1 {u8 = {0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x9f, 0xa0, 0xa1, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6}, u16 = {0x8080, 0x8080, 0x8080, 0x8080, 0xa09f, 0xa2a1, 0xa4a3, 0xa6a5}, u32 = {0x80808080, 0x80808080, 0xa2a1a09f, 0xa6a5a4a3}, u64 = {0x8080808080808080, 0xa6a5a4a3a2a1a09f}, f32 = {0x0, 0x0, 0x0, 0x0}, f64 = {0x0, 0x0}}
q2 {u8 = {0xdf, 0xe0, 0xe1, 0xe2, 0xe3, 0xe4, 0xe5, 0xe6, 0x1f, 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26}, u16 = {0xe0df, 0xe2e1, 0xe4e3, 0xe6e5, 0x201f, 0x2221, 0x2423, 0x2625}, u32 = {0xe2e1e0df, 0xe6e5e4e3, 0x2221201f, 0x26252423}, u64 = {0xe6e5e4e3e2e1e0df, 0x262524232221201f}, f32 = {0x0, 0x0, 0x0, 0x0}, f64 = {0x8000000000000000, 0x0}}
q3 {u8 = {0x5f, 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80, 0x80}, u16 = {0x605f, 0x6261, 0x6463, 0x6665, 0x--Type <RET> for more, q to quit, c to continue without paging--
8080, 0x8080, 0x8080, 0x8080}, u32 = {0x6261605f, 0x66656463, 0x80808080, 0x80808080}, u64 = {0x666564636261605f, 0x8080808080808080}, f32 = {0xffffffff, 0xffffffff, 0x0, 0x0}, f64 = {0x7fffffffffffffff, 0x0}}
q4 {u8 = {0x0 <repeats 16 times>}, u16 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0, 0x0, 0x0}, u64 = {0x0, 0x0}, f32 = {0x0, 0x0, 0x0, 0x0}, f64 = {0x0, 0x0}}
q5 {u8 = {0x0 <repeats 16 times>}, u16 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0, 0x0, 0x0}, u64 = {0x0, 0x0}, f32 = {0x0, 0x0, 0x0, 0x0}, f64 = {0x0, 0x0}}
q6 {u8 = {0x0 <repeats 16 times>}, u16 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0, 0x0, 0x0}, u64 = {0x0, 0x0}, f32 = {0x0, 0x0, 0x0, 0x0}, f64 = {0x0, 0x0}}
q7 {u8 = {0x0 <repeats 16 times>}, u16 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0, 0x0, 0x0}, u64 = {0x0, 0x0}, f32 = {0x0, 0x0, 0x0, 0x0}, f64 = {0x0, 0x0}}
q8 {u8 = {0x0 <repeats 16 times>}, u16 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0, 0x0, 0x0}, u64 = {0x0, 0x0}, f32 = {0x0, 0x0, 0x0, 0x0}, f64 = {0x0, 0x0}}
q9 {u8 = {0x0 <repeats 16 times>}, u16 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0, 0x0, 0x0}, u64 = {0x0, 0x0}, f32 = {0x0, 0x0, 0x0, 0x0}, f64 = {0x0, 0x0}}
q10 {u8 = {0x0 <repeats 16 times>}, u16 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0, 0x0, 0x0}, u64 = {0x0, 0x0}, f32 = {0x0, 0x0, 0x0, 0x0}, f64 = {0x0, 0x0}}
q11 {u8 = {0x0 <repeats 16 times>}, u16 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0, 0x0, 0x0}, u64 = {0x0, 0x0}, f32 = {0x0, 0x0, 0x0, 0x0}, f64 = {0x0, 0x0}}
q12 {u8 = {0x0 <repeats 16 times>}, u16 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0, 0x0, 0x0}, u64 = {0x0, 0x0}, f32 = {0x0, 0x0, 0x0, 0x0}, f64 = {0x0, 0x0}}
q13 {u8 = {0x0 <repeats 16 times>}, u16 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0, 0x0, 0x0}, u64 = {0x0, 0x0}, f32 = {0x0, 0x0, 0x0, 0x0}, f64 = {0x0, 0x0}}
q14 {u8 = {0x0 <repeats 16 times>}, u16 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0, 0x0, 0x0}, u64 = {0x0, 0x0}, f32 = {0x0, 0x0, 0x0, 0x0}, f64 = {0x0, 0x0}}
q15 {u8 = {0x0 <repeats 16 times>}, u16 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, u32 = {0x0, 0x0, 0x0, 0x0}, u64 = {0x0, 0x0}, f32 = {0x0, 0x0, 0x0, 0x0}, f64 = {0x0, 0x0}}
(gdb)
comment:4 by , 5 years ago
From my quick investigation, it looks like this driver requires multi-planar buffers. FFmpeg (ff_v4l2_buffer_initialize function) is aware that it is dealing with multi-planar, so set the num_planes to 2. When the example code calls av_frame_get_buffer, it only allocates buffer for one plane and left the other plane buffer as NULL, which causes the segfault.
Question is, how to get the example code to work?
comment:5 by , 5 years ago
| Owner: | set to |
|---|---|
| Status: | new → open |
Odroid XU4 needs input frames to be in nv21 pix_fmt.
The ./encode_video example is sending frames in yuv420p.
Note:
See TracTickets
for help on using tickets.
Please provide backtrace, disassembly and register dump as explained on https://ffmpeg.org/bugreports.html
Use static libraries or
--disable-strippingto ensure useful debug information.