Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

Kernel Error when using BeagleBone Blue Motor PWM Outputs #212

Open
ansarid opened this issue Sep 18, 2021 · 0 comments
Open

Kernel Error when using BeagleBone Blue Motor PWM Outputs #212

ansarid opened this issue Sep 18, 2021 · 0 comments

Comments

@ansarid
Copy link

ansarid commented Sep 18, 2021

Describe the bug
Using a Beaglebone Blue. Sometimes running the motors runs fine, other times running the motors fails and requires a reboot to fix.

To Reproduce
Steps to reproduce the behavior:

  1. Run rc_test_motors -d 1
    It may run successfully, it may fail.

I have captured a strace output of normal operation and a failure.
The lines of interest are:

238-239
285-286
361->end

Here are the lines of interest:
Normal Run:

...
write(5, "0\0", 2)                      = -1 ENODEV (No such device)
write(5, "1\0", 2)                      = -1 ENODEV (No such device)
...
write(7, "0\0", 2)                      = -1 ENODEV (No such device)
write(7, "1\0", 2)                      = -1 ENODEV (No such device)
...
write(7, "40000", 5)                    = 5
ioctl(19, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeb374c8) = 0
ioctl(20, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeb374c8) = 0
write(8, "40000", 5)                    = 5
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, ^C{tv_sec=0, tv_nsec=473918958}) = ? ERESTART_RESTARTBLOCK (Interrupted by signal)
strace: Process 1910 detached

Failed Run:

...
write(5, "0\0", 2)                      = 2
write(5, "1\0", 2)                      = 2
...
write(7, "0\0", 2)                      = 2
write(7, "1\0", 2)                      = 2
...
write(7, "40000", 5
Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.524616] Internal error: : 1028 [#1] PREEMPT SMP ARM

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.637435] Process rc_test_motors (pid: 2595, stack limit = 0x8fa35472)
)                    = ?
+++ killed by SIGSEGV +++

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.648543] 7e00:                                     00009c40 d9e97e6c db7feb00 c07a1918
fish: “strace rc_test_motors -d 1” terminated by signal SIGSEGV (Address boundary error)

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.681409] 7e80: d9e97ed4 c079f3e0 d9e9a600 00000003 00000000 d9e97f60 d9e97ebc d9e97ea8

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.689627] 7ea0: c08d65e8 c079f3ec c08d65c0 d9e9a600 d9e97ed4 d9e97ec0 c03abb1c c08d65cc

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.697843] 7ec0: 00000005 d9e9a600 d9e97f0c d9e97ed8 c03ab10c c03abae0 00000003 00000000

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.706059] 7ee0: dab68d88 c03ab014 d9e15180 beacf480 d9e97f60 00000000 00000000 00000004

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.714275] 7f00: d9e97f24 d9e97f10 c0319564 c03ab020 00000005 d9e15180 d9e97f54 d9e97f28

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.722492] 7f20: c031976c c0319548 00000000 c033bd58 d9e15180 c1506e08 d9e15180 beacf480

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.730707] 7f40: 00000003 00000000 d9e97f94 d9e97f58 c0319a4c c03196c4 00000003 00000000

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.738924] 7f60: 00000003 00000000 ffffe000 172d0e31 b6f1e614 b6f09000 00000041 00000004

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.747141] 7f80: c0101204 d9e96000 d9e97fa4 d9e97f98 c0319ad8 c03199e4 00000000 d9e97fa8

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.755358] 7fa0: c01011e4 c0319acc b6f1e614 b6f09000 00000007 beacf480 00000005 00000000

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.763574] 7fc0: b6f1e614 b6f09000 00000041 00000004 00000000 00000000 004b4000 00000000

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.771791] 7fe0: 00000004 beacf468 b6eaa34b b6eac526 600d0030 00000007 00000000 00000000

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.884981] Code: e5940000 eb0524e7 e594a02c e6ff7077 (e1da30b0)

Here are the full outputs:
Normal Run:

SCUTTLE ~ ➜  strace rc_test_motors -d 1
execve("/usr/bin/rc_test_motors", ["rc_test_motors", "-d", "1"], 0xbea006d8 /* 21 vars */) = 0
brk(NULL)                               = 0x10fb000
uname({sysname="Linux", nodename="SCUTTLE", ...}) = 0
mmap2(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6f75000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=118889, ...}) = 0
mmap2(NULL, 118889, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb6f31000
close(3)                                = 0
openat(AT_FDCWD, "/lib/arm-linux-gnueabihf/libm.so.6", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\250r\0\0004\0\0\0"..., 512) = 512
_llseek(3, 434644, [434644], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1080) = 1080
_llseek(3, 434288, [434288], SEEK_SET)  = 0
read(3, "A4\0\0\0aeabi\0\1*\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 53) = 53
_llseek(3, 434644, [434644], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1080) = 1080
_llseek(3, 434288, [434288], SEEK_SET)  = 0
read(3, "A4\0\0\0aeabi\0\1*\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 53) = 53
_llseek(3, 434644, [434644], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1080) = 1080
_llseek(3, 434288, [434288], SEEK_SET)  = 0
read(3, "A4\0\0\0aeabi\0\1*\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 53) = 53
fstat64(3, {st_mode=S_IFREG|0644, st_size=435724, ...}) = 0
mmap2(NULL, 499832, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6eb6000
mprotect(0xb6f20000, 61440, PROT_NONE)  = 0
mmap2(0xb6f2f000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x69000) = 0xb6f2f000
close(3)                                = 0
openat(AT_FDCWD, "/lib/arm-linux-gnueabihf/librt.so.1", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
read(3, "\177ELF\1\1\1\3\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0 \30\0\0004\0\0\0"..., 512) = 512
_llseek(3, 21268, [21268], SEEK_SET)    = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1240) = 1240
_llseek(3, 20856, [20856], SEEK_SET)    = 0
read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 51) = 51
_llseek(3, 21268, [21268], SEEK_SET)    = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1240) = 1240
_llseek(3, 20856, [20856], SEEK_SET)    = 0
read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 51) = 51
_llseek(3, 21268, [21268], SEEK_SET)    = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1240) = 1240
_llseek(3, 20856, [20856], SEEK_SET)    = 0
read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 51) = 51
_llseek(3, 21268, [21268], SEEK_SET)    = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1240) = 1240
_llseek(3, 20856, [20856], SEEK_SET)    = 0
read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 51) = 51
fstat64(3, {st_mode=S_IFREG|0644, st_size=22508, ...}) = 0
mmap2(NULL, 86552, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6ea0000
mprotect(0xb6ea5000, 61440, PROT_NONE)  = 0
mmap2(0xb6eb4000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x4000) = 0xb6eb4000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/librobotcontrol.so.1", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\220e\0\0004\0\0\0"..., 512) = 512
_llseek(3, 226692, [226692], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1040) = 1040
_llseek(3, 226344, [226344], SEEK_SET)  = 0
read(3, "A0\0\0\0aeabi\0\1&\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 49) = 49
_llseek(3, 226692, [226692], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1040) = 1040
_llseek(3, 226344, [226344], SEEK_SET)  = 0
read(3, "A0\0\0\0aeabi\0\1&\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 49) = 49
_llseek(3, 226692, [226692], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1040) = 1040
_llseek(3, 226344, [226344], SEEK_SET)  = 0
read(3, "A0\0\0\0aeabi\0\1&\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 49) = 49
_llseek(3, 226692, [226692], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1040) = 1040
_llseek(3, 226344, [226344], SEEK_SET)  = 0
read(3, "A0\0\0\0aeabi\0\1&\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 49) = 49
_llseek(3, 226692, [226692], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1040) = 1040
_llseek(3, 226344, [226344], SEEK_SET)  = 0
read(3, "A0\0\0\0aeabi\0\1&\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 49) = 49
_llseek(3, 226692, [226692], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1040) = 1040
_llseek(3, 226344, [226344], SEEK_SET)  = 0
read(3, "A0\0\0\0aeabi\0\1&\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 49) = 49
fstat64(3, {st_mode=S_IFREG|0644, st_size=227732, ...}) = 0
mmap2(NULL, 383024, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6e42000
mprotect(0xb6e79000, 61440, PROT_NONE)  = 0
mmap2(0xb6e88000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x36000) = 0xb6e88000
mmap2(0xb6e8a000, 88112, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb6e8a000
close(3)                                = 0
openat(AT_FDCWD, "/lib/arm-linux-gnueabihf/libpthread.so.0", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
read(3, "\177ELF\1\1\1\3\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0001M\0\0004\0\0\0"..., 512) = 512
_llseek(3, 108864, [108864], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1400) = 1400
_llseek(3, 74184, [74184], SEEK_SET)    = 0
read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 51) = 51
_llseek(3, 108864, [108864], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1400) = 1400
_llseek(3, 74184, [74184], SEEK_SET)    = 0
read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 51) = 51
_llseek(3, 108864, [108864], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1400) = 1400
_llseek(3, 74184, [74184], SEEK_SET)    = 0
read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 51) = 51
_llseek(3, 108864, [108864], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1400) = 1400
_llseek(3, 74184, [74184], SEEK_SET)    = 0
read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 51) = 51
_llseek(3, 108864, [108864], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1400) = 1400
_llseek(3, 74184, [74184], SEEK_SET)    = 0
read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 51) = 51
_llseek(3, 108864, [108864], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1400) = 1400
_llseek(3, 74184, [74184], SEEK_SET)    = 0
read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 51) = 51
fstat64(3, {st_mode=S_IFREG|0755, st_size=110264, ...}) = 0
mmap2(NULL, 148080, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6e1d000
mprotect(0xb6e2f000, 61440, PROT_NONE)  = 0
mmap2(0xb6e3e000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x11000) = 0xb6e3e000
mmap2(0xb6e40000, 4720, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb6e40000
close(3)                                = 0
openat(AT_FDCWD, "/lib/arm-linux-gnueabihf/libc.so.6", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
read(3, "\177ELF\1\1\1\3\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\09v\1\0004\0\0\0"..., 512) = 512
_llseek(3, 949188, [949188], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2840) = 2840
_llseek(3, 945756, [945756], SEEK_SET)  = 0
read(3, "A4\0\0\0aeabi\0\1*\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\3\f"..., 53) = 53
_llseek(3, 949188, [949188], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2840) = 2840
_llseek(3, 945756, [945756], SEEK_SET)  = 0
read(3, "A4\0\0\0aeabi\0\1*\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\3\f"..., 53) = 53
_llseek(3, 949188, [949188], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2840) = 2840
_llseek(3, 945756, [945756], SEEK_SET)  = 0
read(3, "A4\0\0\0aeabi\0\1*\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\3\f"..., 53) = 53
_llseek(3, 949188, [949188], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2840) = 2840
_llseek(3, 945756, [945756], SEEK_SET)  = 0
read(3, "A4\0\0\0aeabi\0\1*\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\3\f"..., 53) = 53
_llseek(3, 949188, [949188], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2840) = 2840
_llseek(3, 945756, [945756], SEEK_SET)  = 0
read(3, "A4\0\0\0aeabi\0\1*\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\3\f"..., 53) = 53
_llseek(3, 949188, [949188], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2840) = 2840
_llseek(3, 945756, [945756], SEEK_SET)  = 0
read(3, "A4\0\0\0aeabi\0\1*\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\3\f"..., 53) = 53
fstat64(3, {st_mode=S_IFREG|0755, st_size=952028, ...}) = 0
mmap2(NULL, 1020732, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6d23000
mprotect(0xb6e07000, 65536, PROT_NONE)  = 0
mmap2(0xb6e17000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xe4000) = 0xb6e17000
mmap2(0xb6e1a000, 9020, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb6e1a000
close(3)                                = 0
mmap2(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6f73000
set_tls(0xb6f734d0)                     = 0
mprotect(0xb6e17000, 8192, PROT_READ)   = 0
mprotect(0xb6e3e000, 4096, PROT_READ)   = 0
mprotect(0xb6f2f000, 4096, PROT_READ)   = 0
mprotect(0xb6eb4000, 4096, PROT_READ)   = 0
mprotect(0xb6e88000, 4096, PROT_READ)   = 0
mprotect(0x423000, 4096, PROT_READ)     = 0
mprotect(0xb6f77000, 4096, PROT_READ)   = 0
munmap(0xb6f31000, 118889)              = 0
set_tid_address(0xb6f73078)             = 1910
set_robust_list(0xb6f73080, 12)         = 0
rt_sigaction(SIGRTMIN, {sa_handler=0xb6e2189d, sa_mask=[], sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0xb6d48cb1}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {sa_handler=0xb6e21921, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0xb6d48cb1}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
ugetrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0
rt_sigaction(SIGINT, {sa_handler=0x4128f5, sa_mask=[INT], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0xb6d48ca1}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGINT, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d48ca1}, {sa_handler=0x4128f5, sa_mask=[INT], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0xb6d48ca1}, 8) = 0
rt_sigaction(SIGQUIT, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d48ca1}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
clone(child_stack=NULL, flags=CLONE_PARENT_SETTID|SIGCHLD, parent_tidptr=0xbeb37324) = 1911
wait4(1911, [{WIFEXITED(s) && WEXITSTATUS(s) == 1}], 0, NULL) = 1911
rt_sigaction(SIGINT, {sa_handler=0x4128f5, sa_mask=[INT], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0xb6d48ca1}, NULL, 8) = 0
rt_sigaction(SIGQUIT, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6d48ca1}, NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=1911, si_uid=1000, si_status=1, si_utime=0, si_stime=1} ---
brk(NULL)                               = 0x10fb000
brk(0x111c000)                          = 0x111c000
openat(AT_FDCWD, "/proc/device-tree/model", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0444, st_size=26, ...}) = 0
read(3, "TI AM335x BeagleBone Blue\0", 4096) = 26
read(3, "", 4096)                       = 0
close(3)                                = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48300000.epwmss/48300200.pwm/pwm", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 3
fstat64(3, {st_mode=S_IFDIR|0775, st_size=0, ...}) = 0
getdents64(3, /* 3 entries */, 32768)   = 80
getdents64(3, /* 0 entries */, 32768)   = 0
close(3)                                = 0
lstat64("/sys/devices/platform/ocp/48300000.epwmss/48300200.pwm/pwm/pwmchip1/unexport", {st_mode=S_IFREG|0220, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48300000.epwmss/48300200.pwm/pwm/pwmchip1/unexport", O_WRONLY) = 3
write(3, "0\0", 2)                      = -1 ENODEV (No such device)
write(3, "1\0", 2)                      = -1 ENODEV (No such device)
close(3)                                = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48300000.epwmss/48300200.pwm/pwm", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 3
fstat64(3, {st_mode=S_IFDIR|0775, st_size=0, ...}) = 0
getdents64(3, /* 3 entries */, 32768)   = 80
getdents64(3, /* 0 entries */, 32768)   = 0
close(3)                                = 0
lstat64("/sys/devices/platform/ocp/48300000.epwmss/48300200.pwm/pwm/pwmchip1/export", {st_mode=S_IFREG|0220, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48300000.epwmss/48300200.pwm/pwm/pwmchip1/export", O_WRONLY) = 3
write(3, "0\0", 2)                      = 2
write(3, "1\0", 2)                      = 2
close(3)                                = 0
access("/sys/class/pwm/pwmchip0/pwm0/enable", F_OK) = -1 ENOENT (No such file or directory)
access("/sys/class/pwm/pwm-1:0/enable", F_OK) = 0
access("/sys/class/pwm/pwm-1:1/enable", F_OK) = 0
openat(AT_FDCWD, "/sys/class/pwm/pwm-1:0/duty_cycle", O_WRONLY) = -1 EACCES (Permission denied)
nanosleep({tv_sec=0, tv_nsec=600000000}, 0xbeb37390) = 0
openat(AT_FDCWD, "/sys/class/pwm/pwm-1:0/duty_cycle", O_WRONLY) = 3
openat(AT_FDCWD, "/sys/class/pwm/pwm-1:1/duty_cycle", O_WRONLY) = 4
openat(AT_FDCWD, "/sys/class/pwm/pwm-1:0/enable", O_WRONLY) = 5
openat(AT_FDCWD, "/sys/class/pwm/pwm-1:1/enable", O_WRONLY) = 6
openat(AT_FDCWD, "/sys/class/pwm/pwm-1:0/period", O_WRONLY) = 7
openat(AT_FDCWD, "/sys/class/pwm/pwm-1:1/period", O_WRONLY) = 8
openat(AT_FDCWD, "/sys/class/pwm/pwm-1:0/polarity", O_WRONLY) = 9
openat(AT_FDCWD, "/sys/class/pwm/pwm-1:1/polarity", O_WRONLY) = 10
write(7, "40000", 5)                    = 5
write(8, "40000", 5)                    = 5
write(9, "normal\0", 7)                 = 7
write(10, "normal\0", 7)                = 7
write(3, "0\0", 2)                      = 2
write(4, "0\0", 2)                      = 2
write(5, "1\0", 2)                      = 2
write(6, "1\0", 2)                      = 2
close(5)                                = 0
close(6)                                = 0
close(7)                                = 0
close(8)                                = 0
close(9)                                = 0
close(10)                               = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48302000.epwmss/48302200.pwm/pwm", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 5
fstat64(5, {st_mode=S_IFDIR|0775, st_size=0, ...}) = 0
getdents64(5, /* 3 entries */, 32768)   = 80
getdents64(5, /* 0 entries */, 32768)   = 0
close(5)                                = 0
lstat64("/sys/devices/platform/ocp/48302000.epwmss/48302200.pwm/pwm/pwmchip4/unexport", {st_mode=S_IFREG|0220, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48302000.epwmss/48302200.pwm/pwm/pwmchip4/unexport", O_WRONLY) = 5
write(5, "0\0", 2)                      = -1 ENODEV (No such device)
write(5, "1\0", 2)                      = -1 ENODEV (No such device)
close(5)                                = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48302000.epwmss/48302200.pwm/pwm", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 5
fstat64(5, {st_mode=S_IFDIR|0775, st_size=0, ...}) = 0
getdents64(5, /* 3 entries */, 32768)   = 80
getdents64(5, /* 0 entries */, 32768)   = 0
close(5)                                = 0
lstat64("/sys/devices/platform/ocp/48302000.epwmss/48302200.pwm/pwm/pwmchip4/export", {st_mode=S_IFREG|0220, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48302000.epwmss/48302200.pwm/pwm/pwmchip4/export", O_WRONLY) = 5
write(5, "0\0", 2)                      = 2
write(5, "1\0", 2)                      = 2
close(5)                                = 0
access("/sys/class/pwm/pwmchip2/pwm0/enable", F_OK) = -1 ENOENT (No such file or directory)
access("/sys/class/pwm/pwm-4:0/enable", F_OK) = 0
access("/sys/class/pwm/pwm-4:1/enable", F_OK) = 0
openat(AT_FDCWD, "/sys/class/pwm/pwm-4:0/duty_cycle", O_WRONLY) = -1 EACCES (Permission denied)
nanosleep({tv_sec=0, tv_nsec=600000000}, 0xbeb37390) = 0
openat(AT_FDCWD, "/sys/class/pwm/pwm-4:0/duty_cycle", O_WRONLY) = 5
openat(AT_FDCWD, "/sys/class/pwm/pwm-4:1/duty_cycle", O_WRONLY) = 6
openat(AT_FDCWD, "/sys/class/pwm/pwm-4:0/enable", O_WRONLY) = 7
openat(AT_FDCWD, "/sys/class/pwm/pwm-4:1/enable", O_WRONLY) = 8
openat(AT_FDCWD, "/sys/class/pwm/pwm-4:0/period", O_WRONLY) = 9
openat(AT_FDCWD, "/sys/class/pwm/pwm-4:1/period", O_WRONLY) = 10
openat(AT_FDCWD, "/sys/class/pwm/pwm-4:0/polarity", O_WRONLY) = 11
openat(AT_FDCWD, "/sys/class/pwm/pwm-4:1/polarity", O_WRONLY) = 12
write(9, "40000", 5)                    = 5
write(10, "40000", 5)                   = 5
write(11, "normal\0", 7)                = 7
write(12, "normal\0", 7)                = 7
write(5, "0\0", 2)                      = 2
write(6, "0\0", 2)                      = 2
write(7, "1\0", 2)                      = 2
write(8, "1\0", 2)                      = 2
close(7)                                = 0
close(8)                                = 0
close(9)                                = 0
close(10)                               = 0
close(11)                               = 0
close(12)                               = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48304000.epwmss/48304200.pwm/pwm", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 7
fstat64(7, {st_mode=S_IFDIR|0775, st_size=0, ...}) = 0
getdents64(7, /* 3 entries */, 32768)   = 80
getdents64(7, /* 0 entries */, 32768)   = 0
close(7)                                = 0
lstat64("/sys/devices/platform/ocp/48304000.epwmss/48304200.pwm/pwm/pwmchip7/unexport", {st_mode=S_IFREG|0220, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48304000.epwmss/48304200.pwm/pwm/pwmchip7/unexport", O_WRONLY) = 7
write(7, "0\0", 2)                      = -1 ENODEV (No such device)
write(7, "1\0", 2)                      = -1 ENODEV (No such device)
close(7)                                = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48304000.epwmss/48304200.pwm/pwm", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 7
fstat64(7, {st_mode=S_IFDIR|0775, st_size=0, ...}) = 0
getdents64(7, /* 3 entries */, 32768)   = 80
getdents64(7, /* 0 entries */, 32768)   = 0
close(7)                                = 0
lstat64("/sys/devices/platform/ocp/48304000.epwmss/48304200.pwm/pwm/pwmchip7/export", {st_mode=S_IFREG|0220, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48304000.epwmss/48304200.pwm/pwm/pwmchip7/export", O_WRONLY) = 7
write(7, "0\0", 2)                      = 2
write(7, "1\0", 2)                      = 2
close(7)                                = 0
access("/sys/class/pwm/pwmchip4/pwm0/enable", F_OK) = -1 ENOENT (No such file or directory)
access("/sys/class/pwm/pwm-7:0/enable", F_OK) = 0
access("/sys/class/pwm/pwm-7:1/enable", F_OK) = 0
openat(AT_FDCWD, "/sys/class/pwm/pwm-7:0/duty_cycle", O_WRONLY) = -1 EACCES (Permission denied)
nanosleep({tv_sec=0, tv_nsec=600000000}, 0xbeb37390) = 0
openat(AT_FDCWD, "/sys/class/pwm/pwm-7:0/duty_cycle", O_WRONLY) = 7
openat(AT_FDCWD, "/sys/class/pwm/pwm-7:1/duty_cycle", O_WRONLY) = 8
openat(AT_FDCWD, "/sys/class/pwm/pwm-7:0/enable", O_WRONLY) = 9
openat(AT_FDCWD, "/sys/class/pwm/pwm-7:1/enable", O_WRONLY) = 10
openat(AT_FDCWD, "/sys/class/pwm/pwm-7:0/period", O_WRONLY) = 11
openat(AT_FDCWD, "/sys/class/pwm/pwm-7:1/period", O_WRONLY) = 12
openat(AT_FDCWD, "/sys/class/pwm/pwm-7:0/polarity", O_WRONLY) = 13
openat(AT_FDCWD, "/sys/class/pwm/pwm-7:1/polarity", O_WRONLY) = 14
write(11, "40000", 5)                   = 5
write(12, "40000", 5)                   = 5
write(13, "normal\0", 7)                = 7
write(14, "normal\0", 7)                = 7
write(7, "0\0", 2)                      = 2
write(8, "0\0", 2)                      = 2
write(9, "1\0", 2)                      = 2
write(10, "1\0", 2)                     = 2
close(9)                                = 0
close(10)                               = 0
close(11)                               = 0
close(12)                               = 0
close(13)                               = 0
close(14)                               = 0
openat(AT_FDCWD, "/dev/gpiochip0", O_RDWR) = 9
ioctl(9, GPIO_GET_LINEHANDLE_IOCTL, 0xbeb37394) = 0
openat(AT_FDCWD, "/dev/gpiochip2", O_RDWR) = 11
ioctl(11, GPIO_GET_LINEHANDLE_IOCTL, 0xbeb37394) = 0
ioctl(9, GPIO_GET_LINEHANDLE_IOCTL, 0xbeb37394) = 0
openat(AT_FDCWD, "/dev/gpiochip1", O_RDWR) = 14
ioctl(14, GPIO_GET_LINEHANDLE_IOCTL, 0xbeb37394) = 0
ioctl(9, GPIO_GET_LINEHANDLE_IOCTL, 0xbeb37394) = 0
ioctl(11, GPIO_GET_LINEHANDLE_IOCTL, 0xbeb37394) = 0
ioctl(11, GPIO_GET_LINEHANDLE_IOCTL, 0xbeb37394) = 0
ioctl(11, GPIO_GET_LINEHANDLE_IOCTL, 0xbeb37394) = 0
ioctl(11, GPIO_GET_LINEHANDLE_IOCTL, 0xbeb37394) = 0
ioctl(12, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeb374b0) = 0
ioctl(13, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeb374b0) = 0
write(5, "0", 1)                        = 1
ioctl(15, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeb374b0) = 0
ioctl(16, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeb374b0) = 0
write(6, "0", 1)                        = 1
ioctl(17, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeb374b0) = 0
ioctl(18, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeb374b0) = 0
write(7, "0", 1)                        = 1
ioctl(19, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeb374b0) = 0
ioctl(20, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeb374b0) = 0
write(8, "0", 1)                        = 1
ioctl(10, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeb374d0) = 0
fstat64(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(0x88, 0), ...}) = 0
write(1, "sending duty cycle 1.0000\n", 26sending duty cycle 1.0000
) = 26
ioctl(12, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeb374c8) = 0
ioctl(13, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeb374c8) = 0
write(5, "40000", 5)                    = 5
ioctl(15, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeb374c8) = 0
ioctl(16, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeb374c8) = 0
write(6, "40000", 5)                    = 5
ioctl(17, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeb374c8) = 0
ioctl(18, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeb374c8) = 0
write(7, "40000", 5)                    = 5
ioctl(19, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeb374c8) = 0
ioctl(20, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeb374c8) = 0
write(8, "40000", 5)                    = 5
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, 0xbeb37518) = 0
nanosleep({tv_sec=0, tv_nsec=500000000}, ^C{tv_sec=0, tv_nsec=473918958}) = ? ERESTART_RESTARTBLOCK (Interrupted by signal)
strace: Process 1910 detached

Failed Run:

SCUTTLE ~ ➜  strace rc_test_motors -d 1
execve("/usr/bin/rc_test_motors", ["rc_test_motors", "-d", "1"], 0xbedac6d8 /* 21 vars */) = 0
brk(NULL)                               = 0x199c000
uname({sysname="Linux", nodename="SCUTTLE", ...}) = 0
mmap2(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6ff5000
access("/etc/ld.so.preload", R_OK)      = -1 ENOENT (No such file or directory)
openat(AT_FDCWD, "/etc/ld.so.cache", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
fstat64(3, {st_mode=S_IFREG|0644, st_size=118889, ...}) = 0
mmap2(NULL, 118889, PROT_READ, MAP_PRIVATE, 3, 0) = 0xb6fb1000
close(3)                                = 0
openat(AT_FDCWD, "/lib/arm-linux-gnueabihf/libm.so.6", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\250r\0\0004\0\0\0"..., 512) = 512
_llseek(3, 434644, [434644], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1080) = 1080
_llseek(3, 434288, [434288], SEEK_SET)  = 0
read(3, "A4\0\0\0aeabi\0\1*\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 53) = 53
_llseek(3, 434644, [434644], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1080) = 1080
_llseek(3, 434288, [434288], SEEK_SET)  = 0
read(3, "A4\0\0\0aeabi\0\1*\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 53) = 53
_llseek(3, 434644, [434644], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1080) = 1080
_llseek(3, 434288, [434288], SEEK_SET)  = 0
read(3, "A4\0\0\0aeabi\0\1*\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 53) = 53
fstat64(3, {st_mode=S_IFREG|0644, st_size=435724, ...}) = 0
mmap2(NULL, 499832, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6f36000
mprotect(0xb6fa0000, 61440, PROT_NONE)  = 0
mmap2(0xb6faf000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x69000) = 0xb6faf000
close(3)                                = 0
openat(AT_FDCWD, "/lib/arm-linux-gnueabihf/librt.so.1", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
read(3, "\177ELF\1\1\1\3\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0 \30\0\0004\0\0\0"..., 512) = 512
_llseek(3, 21268, [21268], SEEK_SET)    = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1240) = 1240
_llseek(3, 20856, [20856], SEEK_SET)    = 0
read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 51) = 51
_llseek(3, 21268, [21268], SEEK_SET)    = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1240) = 1240
_llseek(3, 20856, [20856], SEEK_SET)    = 0
read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 51) = 51
_llseek(3, 21268, [21268], SEEK_SET)    = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1240) = 1240
_llseek(3, 20856, [20856], SEEK_SET)    = 0
read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 51) = 51
_llseek(3, 21268, [21268], SEEK_SET)    = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1240) = 1240
_llseek(3, 20856, [20856], SEEK_SET)    = 0
read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 51) = 51
fstat64(3, {st_mode=S_IFREG|0644, st_size=22508, ...}) = 0
mmap2(NULL, 86552, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6f20000
mprotect(0xb6f25000, 61440, PROT_NONE)  = 0
mmap2(0xb6f34000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x4000) = 0xb6f34000
close(3)                                = 0
openat(AT_FDCWD, "/usr/lib/librobotcontrol.so.1", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\220e\0\0004\0\0\0"..., 512) = 512
_llseek(3, 226692, [226692], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1040) = 1040
_llseek(3, 226344, [226344], SEEK_SET)  = 0
read(3, "A0\0\0\0aeabi\0\1&\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 49) = 49
_llseek(3, 226692, [226692], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1040) = 1040
_llseek(3, 226344, [226344], SEEK_SET)  = 0
read(3, "A0\0\0\0aeabi\0\1&\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 49) = 49
_llseek(3, 226692, [226692], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1040) = 1040
_llseek(3, 226344, [226344], SEEK_SET)  = 0
read(3, "A0\0\0\0aeabi\0\1&\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 49) = 49
_llseek(3, 226692, [226692], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1040) = 1040
_llseek(3, 226344, [226344], SEEK_SET)  = 0
read(3, "A0\0\0\0aeabi\0\1&\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 49) = 49
_llseek(3, 226692, [226692], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1040) = 1040
_llseek(3, 226344, [226344], SEEK_SET)  = 0
read(3, "A0\0\0\0aeabi\0\1&\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 49) = 49
_llseek(3, 226692, [226692], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1040) = 1040
_llseek(3, 226344, [226344], SEEK_SET)  = 0
read(3, "A0\0\0\0aeabi\0\1&\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 49) = 49
fstat64(3, {st_mode=S_IFREG|0644, st_size=227732, ...}) = 0
mmap2(NULL, 383024, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6ec2000
mprotect(0xb6ef9000, 61440, PROT_NONE)  = 0
mmap2(0xb6f08000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x36000) = 0xb6f08000
mmap2(0xb6f0a000, 88112, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb6f0a000
close(3)                                = 0
openat(AT_FDCWD, "/lib/arm-linux-gnueabihf/libpthread.so.0", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
read(3, "\177ELF\1\1\1\3\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0001M\0\0004\0\0\0"..., 512) = 512
_llseek(3, 108864, [108864], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1400) = 1400
_llseek(3, 74184, [74184], SEEK_SET)    = 0
read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 51) = 51
_llseek(3, 108864, [108864], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1400) = 1400
_llseek(3, 74184, [74184], SEEK_SET)    = 0
read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 51) = 51
_llseek(3, 108864, [108864], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1400) = 1400
_llseek(3, 74184, [74184], SEEK_SET)    = 0
read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 51) = 51
_llseek(3, 108864, [108864], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1400) = 1400
_llseek(3, 74184, [74184], SEEK_SET)    = 0
read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 51) = 51
_llseek(3, 108864, [108864], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1400) = 1400
_llseek(3, 74184, [74184], SEEK_SET)    = 0
read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 51) = 51
_llseek(3, 108864, [108864], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 1400) = 1400
_llseek(3, 74184, [74184], SEEK_SET)    = 0
read(3, "A2\0\0\0aeabi\0\1(\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\4\22"..., 51) = 51
fstat64(3, {st_mode=S_IFREG|0755, st_size=110264, ...}) = 0
mmap2(NULL, 148080, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6e9d000
mprotect(0xb6eaf000, 61440, PROT_NONE)  = 0
mmap2(0xb6ebe000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x11000) = 0xb6ebe000
mmap2(0xb6ec0000, 4720, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb6ec0000
close(3)                                = 0
openat(AT_FDCWD, "/lib/arm-linux-gnueabihf/libc.so.6", O_RDONLY|O_LARGEFILE|O_CLOEXEC) = 3
read(3, "\177ELF\1\1\1\3\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\09v\1\0004\0\0\0"..., 512) = 512
_llseek(3, 949188, [949188], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2840) = 2840
_llseek(3, 945756, [945756], SEEK_SET)  = 0
read(3, "A4\0\0\0aeabi\0\1*\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\3\f"..., 53) = 53
_llseek(3, 949188, [949188], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2840) = 2840
_llseek(3, 945756, [945756], SEEK_SET)  = 0
read(3, "A4\0\0\0aeabi\0\1*\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\3\f"..., 53) = 53
_llseek(3, 949188, [949188], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2840) = 2840
_llseek(3, 945756, [945756], SEEK_SET)  = 0
read(3, "A4\0\0\0aeabi\0\1*\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\3\f"..., 53) = 53
_llseek(3, 949188, [949188], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2840) = 2840
_llseek(3, 945756, [945756], SEEK_SET)  = 0
read(3, "A4\0\0\0aeabi\0\1*\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\3\f"..., 53) = 53
_llseek(3, 949188, [949188], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2840) = 2840
_llseek(3, 945756, [945756], SEEK_SET)  = 0
read(3, "A4\0\0\0aeabi\0\1*\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\3\f"..., 53) = 53
_llseek(3, 949188, [949188], SEEK_SET)  = 0
read(3, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0"..., 2840) = 2840
_llseek(3, 945756, [945756], SEEK_SET)  = 0
read(3, "A4\0\0\0aeabi\0\1*\0\0\0\0057-A\0\6\n\7A\10\1\t\2\n\3\f"..., 53) = 53
fstat64(3, {st_mode=S_IFREG|0755, st_size=952028, ...}) = 0
mmap2(NULL, 1020732, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0xb6da3000
mprotect(0xb6e87000, 65536, PROT_NONE)  = 0
mmap2(0xb6e97000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xe4000) = 0xb6e97000
mmap2(0xb6e9a000, 9020, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb6e9a000
close(3)                                = 0
mmap2(NULL, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb6ff3000
set_tls(0xb6ff34d0)                     = 0
mprotect(0xb6e97000, 8192, PROT_READ)   = 0
mprotect(0xb6ebe000, 4096, PROT_READ)   = 0
mprotect(0xb6faf000, 4096, PROT_READ)   = 0
mprotect(0xb6f34000, 4096, PROT_READ)   = 0
mprotect(0xb6f08000, 4096, PROT_READ)   = 0
mprotect(0x4b3000, 4096, PROT_READ)     = 0
mprotect(0xb6ff7000, 4096, PROT_READ)   = 0
munmap(0xb6fb1000, 118889)              = 0
set_tid_address(0xb6ff3078)             = 2595
set_robust_list(0xb6ff3080, 12)         = 0
rt_sigaction(SIGRTMIN, {sa_handler=0xb6ea189d, sa_mask=[], sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0xb6dc8cb1}, NULL, 8) = 0
rt_sigaction(SIGRT_1, {sa_handler=0xb6ea1921, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0xb6dc8cb1}, NULL, 8) = 0
rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0
ugetrlimit(RLIMIT_STACK, {rlim_cur=8192*1024, rlim_max=RLIM_INFINITY}) = 0
rt_sigaction(SIGINT, {sa_handler=0x4a28f5, sa_mask=[INT], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0xb6dc8ca1}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigaction(SIGINT, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6dc8ca1}, {sa_handler=0x4a28f5, sa_mask=[INT], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0xb6dc8ca1}, 8) = 0
rt_sigaction(SIGQUIT, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6dc8ca1}, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=0}, 8) = 0
rt_sigprocmask(SIG_BLOCK, [CHLD], [], 8) = 0
clone(child_stack=NULL, flags=CLONE_PARENT_SETTID|SIGCHLD, parent_tidptr=0xbeacf324) = 2596
wait4(2596, [{WIFEXITED(s) && WEXITSTATUS(s) == 1}], 0, NULL) = 2596
rt_sigaction(SIGINT, {sa_handler=0x4a28f5, sa_mask=[INT], sa_flags=SA_RESTORER|SA_RESTART, sa_restorer=0xb6dc8ca1}, NULL, 8) = 0
rt_sigaction(SIGQUIT, {sa_handler=SIG_DFL, sa_mask=[], sa_flags=SA_RESTORER, sa_restorer=0xb6dc8ca1}, NULL, 8) = 0
rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0
--- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2596, si_uid=1000, si_status=1, si_utime=0, si_stime=0} ---
brk(NULL)                               = 0x199c000
brk(0x19bd000)                          = 0x19bd000
openat(AT_FDCWD, "/proc/device-tree/model", O_RDONLY) = 3
fstat64(3, {st_mode=S_IFREG|0444, st_size=26, ...}) = 0
read(3, "TI AM335x BeagleBone Blue\0", 4096) = 26
read(3, "", 4096)                       = 0
close(3)                                = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48300000.epwmss/48300200.pwm/pwm", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 3
fstat64(3, {st_mode=S_IFDIR|0775, st_size=0, ...}) = 0
getdents64(3, /* 3 entries */, 32768)   = 80
getdents64(3, /* 0 entries */, 32768)   = 0
close(3)                                = 0
lstat64("/sys/devices/platform/ocp/48300000.epwmss/48300200.pwm/pwm/pwmchip1/unexport", {st_mode=S_IFREG|0220, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48300000.epwmss/48300200.pwm/pwm/pwmchip1/unexport", O_WRONLY) = 3
write(3, "0\0", 2)                      = 2
write(3, "1\0", 2)                      = 2
close(3)                                = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48300000.epwmss/48300200.pwm/pwm", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 3
fstat64(3, {st_mode=S_IFDIR|0775, st_size=0, ...}) = 0
getdents64(3, /* 3 entries */, 32768)   = 80
getdents64(3, /* 0 entries */, 32768)   = 0
close(3)                                = 0
lstat64("/sys/devices/platform/ocp/48300000.epwmss/48300200.pwm/pwm/pwmchip1/export", {st_mode=S_IFREG|0220, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48300000.epwmss/48300200.pwm/pwm/pwmchip1/export", O_WRONLY) = 3
write(3, "0\0", 2)                      = 2
write(3, "1\0", 2)                      = 2
close(3)                                = 0
access("/sys/class/pwm/pwmchip0/pwm0/enable", F_OK) = -1 ENOENT (No such file or directory)
access("/sys/class/pwm/pwm-1:0/enable", F_OK) = 0
access("/sys/class/pwm/pwm-1:1/enable", F_OK) = 0
openat(AT_FDCWD, "/sys/class/pwm/pwm-1:0/duty_cycle", O_WRONLY) = -1 EACCES (Permission denied)
nanosleep({tv_sec=0, tv_nsec=600000000}, 0xbeacf390) = 0
openat(AT_FDCWD, "/sys/class/pwm/pwm-1:0/duty_cycle", O_WRONLY) = 3
openat(AT_FDCWD, "/sys/class/pwm/pwm-1:1/duty_cycle", O_WRONLY) = 4
openat(AT_FDCWD, "/sys/class/pwm/pwm-1:0/enable", O_WRONLY) = 5
openat(AT_FDCWD, "/sys/class/pwm/pwm-1:1/enable", O_WRONLY) = 6
openat(AT_FDCWD, "/sys/class/pwm/pwm-1:0/period", O_WRONLY) = 7
openat(AT_FDCWD, "/sys/class/pwm/pwm-1:1/period", O_WRONLY) = 8
openat(AT_FDCWD, "/sys/class/pwm/pwm-1:0/polarity", O_WRONLY) = 9
openat(AT_FDCWD, "/sys/class/pwm/pwm-1:1/polarity", O_WRONLY) = 10
write(7, "40000", 5)                    = 5
write(8, "40000", 5)                    = 5
write(9, "normal\0", 7)                 = 7
write(10, "normal\0", 7)                = 7
write(3, "0\0", 2)                      = 2
write(4, "0\0", 2)                      = 2
write(5, "1\0", 2)                      = 2
write(6, "1\0", 2)                      = 2
close(5)                                = 0
close(6)                                = 0
close(7)                                = 0
close(8)                                = 0
close(9)                                = 0
close(10)                               = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48302000.epwmss/48302200.pwm/pwm", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 5
fstat64(5, {st_mode=S_IFDIR|0775, st_size=0, ...}) = 0
getdents64(5, /* 3 entries */, 32768)   = 80
getdents64(5, /* 0 entries */, 32768)   = 0
close(5)                                = 0
lstat64("/sys/devices/platform/ocp/48302000.epwmss/48302200.pwm/pwm/pwmchip4/unexport", {st_mode=S_IFREG|0220, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48302000.epwmss/48302200.pwm/pwm/pwmchip4/unexport", O_WRONLY) = 5
write(5, "0\0", 2)                      = 2
write(5, "1\0", 2)                      = 2
close(5)                                = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48302000.epwmss/48302200.pwm/pwm", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 5
fstat64(5, {st_mode=S_IFDIR|0775, st_size=0, ...}) = 0
getdents64(5, /* 3 entries */, 32768)   = 80
getdents64(5, /* 0 entries */, 32768)   = 0
close(5)                                = 0
lstat64("/sys/devices/platform/ocp/48302000.epwmss/48302200.pwm/pwm/pwmchip4/export", {st_mode=S_IFREG|0220, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48302000.epwmss/48302200.pwm/pwm/pwmchip4/export", O_WRONLY) = 5
write(5, "0\0", 2)                      = 2
write(5, "1\0", 2)                      = 2
close(5)                                = 0
access("/sys/class/pwm/pwmchip2/pwm0/enable", F_OK) = -1 ENOENT (No such file or directory)
access("/sys/class/pwm/pwm-4:0/enable", F_OK) = 0
access("/sys/class/pwm/pwm-4:1/enable", F_OK) = 0
openat(AT_FDCWD, "/sys/class/pwm/pwm-4:0/duty_cycle", O_WRONLY) = -1 EACCES (Permission denied)
nanosleep({tv_sec=0, tv_nsec=600000000}, 0xbeacf390) = 0
openat(AT_FDCWD, "/sys/class/pwm/pwm-4:0/duty_cycle", O_WRONLY) = 5
openat(AT_FDCWD, "/sys/class/pwm/pwm-4:1/duty_cycle", O_WRONLY) = 6
openat(AT_FDCWD, "/sys/class/pwm/pwm-4:0/enable", O_WRONLY) = 7
openat(AT_FDCWD, "/sys/class/pwm/pwm-4:1/enable", O_WRONLY) = 8
openat(AT_FDCWD, "/sys/class/pwm/pwm-4:0/period", O_WRONLY) = 9
openat(AT_FDCWD, "/sys/class/pwm/pwm-4:1/period", O_WRONLY) = 10
openat(AT_FDCWD, "/sys/class/pwm/pwm-4:0/polarity", O_WRONLY) = 11
openat(AT_FDCWD, "/sys/class/pwm/pwm-4:1/polarity", O_WRONLY) = 12
write(9, "40000", 5)                    = 5
write(10, "40000", 5)                   = 5
write(11, "normal\0", 7)                = 7
write(12, "normal\0", 7)                = 7
write(5, "0\0", 2)                      = 2
write(6, "0\0", 2)                      = 2
write(7, "1\0", 2)                      = 2
write(8, "1\0", 2)                      = 2
close(7)                                = 0
close(8)                                = 0
close(9)                                = 0
close(10)                               = 0
close(11)                               = 0
close(12)                               = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48304000.epwmss/48304200.pwm/pwm", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 7
fstat64(7, {st_mode=S_IFDIR|0775, st_size=0, ...}) = 0
getdents64(7, /* 3 entries */, 32768)   = 80
getdents64(7, /* 0 entries */, 32768)   = 0
close(7)                                = 0
lstat64("/sys/devices/platform/ocp/48304000.epwmss/48304200.pwm/pwm/pwmchip7/unexport", {st_mode=S_IFREG|0220, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48304000.epwmss/48304200.pwm/pwm/pwmchip7/unexport", O_WRONLY) = 7
write(7, "0\0", 2)                      = 2
write(7, "1\0", 2)                      = 2
close(7)                                = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48304000.epwmss/48304200.pwm/pwm", O_RDONLY|O_NONBLOCK|O_LARGEFILE|O_CLOEXEC|O_DIRECTORY) = 7
fstat64(7, {st_mode=S_IFDIR|0775, st_size=0, ...}) = 0
getdents64(7, /* 3 entries */, 32768)   = 80
getdents64(7, /* 0 entries */, 32768)   = 0
close(7)                                = 0
lstat64("/sys/devices/platform/ocp/48304000.epwmss/48304200.pwm/pwm/pwmchip7/export", {st_mode=S_IFREG|0220, st_size=4096, ...}) = 0
openat(AT_FDCWD, "/sys/devices/platform/ocp/48304000.epwmss/48304200.pwm/pwm/pwmchip7/export", O_WRONLY) = 7
write(7, "0\0", 2)                      = 2
write(7, "1\0", 2)                      = 2
close(7)                                = 0
access("/sys/class/pwm/pwmchip4/pwm0/enable", F_OK) = -1 ENOENT (No such file or directory)
access("/sys/class/pwm/pwm-7:0/enable", F_OK) = 0
access("/sys/class/pwm/pwm-7:1/enable", F_OK) = 0
openat(AT_FDCWD, "/sys/class/pwm/pwm-7:0/duty_cycle", O_WRONLY) = -1 EACCES (Permission denied)
nanosleep({tv_sec=0, tv_nsec=600000000}, 0xbeacf390) = 0
openat(AT_FDCWD, "/sys/class/pwm/pwm-7:0/duty_cycle", O_WRONLY) = 7
openat(AT_FDCWD, "/sys/class/pwm/pwm-7:1/duty_cycle", O_WRONLY) = 8
openat(AT_FDCWD, "/sys/class/pwm/pwm-7:0/enable", O_WRONLY) = 9
openat(AT_FDCWD, "/sys/class/pwm/pwm-7:1/enable", O_WRONLY) = 10
openat(AT_FDCWD, "/sys/class/pwm/pwm-7:0/period", O_WRONLY) = 11
openat(AT_FDCWD, "/sys/class/pwm/pwm-7:1/period", O_WRONLY) = 12
openat(AT_FDCWD, "/sys/class/pwm/pwm-7:0/polarity", O_WRONLY) = 13
openat(AT_FDCWD, "/sys/class/pwm/pwm-7:1/polarity", O_WRONLY) = 14
write(11, "40000", 5)                   = 5
write(12, "40000", 5)                   = 5
write(13, "normal\0", 7)                = 7
write(14, "normal\0", 7)                = 7
write(7, "0\0", 2)                      = 2
write(8, "0\0", 2)                      = 2
write(9, "1\0", 2)                      = 2
write(10, "1\0", 2)                     = 2
close(9)                                = 0
close(10)                               = 0
close(11)                               = 0
close(12)                               = 0
close(13)                               = 0
close(14)                               = 0
openat(AT_FDCWD, "/dev/gpiochip0", O_RDWR) = 9
ioctl(9, GPIO_GET_LINEHANDLE_IOCTL, 0xbeacf394) = 0
openat(AT_FDCWD, "/dev/gpiochip2", O_RDWR) = 11
ioctl(11, GPIO_GET_LINEHANDLE_IOCTL, 0xbeacf394) = 0
ioctl(9, GPIO_GET_LINEHANDLE_IOCTL, 0xbeacf394) = 0
openat(AT_FDCWD, "/dev/gpiochip1", O_RDWR) = 14
ioctl(14, GPIO_GET_LINEHANDLE_IOCTL, 0xbeacf394) = 0
ioctl(9, GPIO_GET_LINEHANDLE_IOCTL, 0xbeacf394) = 0
ioctl(11, GPIO_GET_LINEHANDLE_IOCTL, 0xbeacf394) = 0
ioctl(11, GPIO_GET_LINEHANDLE_IOCTL, 0xbeacf394) = 0
ioctl(11, GPIO_GET_LINEHANDLE_IOCTL, 0xbeacf394) = 0
ioctl(11, GPIO_GET_LINEHANDLE_IOCTL, 0xbeacf394) = 0
ioctl(12, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeacf4b0) = 0
ioctl(13, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeacf4b0) = 0
write(5, "0", 1)                        = 1
ioctl(15, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeacf4b0) = 0
ioctl(16, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeacf4b0) = 0
write(6, "0", 1)                        = 1
ioctl(17, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeacf4b0) = 0
ioctl(18, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeacf4b0) = 0
write(7, "0", 1)                        = 1
ioctl(19, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeacf4b0) = 0
ioctl(20, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeacf4b0) = 0
write(8, "0", 1)                        = 1
ioctl(10, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeacf4d0) = 0
fstat64(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(0x88, 0), ...}) = 0
write(1, "sending duty cycle 1.0000\n", 26sending duty cycle 1.0000
) = 26
ioctl(12, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeacf4c8) = 0
ioctl(13, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeacf4c8) = 0
write(5, "40000", 5)                    = 5
ioctl(15, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeacf4c8) = 0
ioctl(16, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeacf4c8) = 0
write(6, "40000", 5)                    = 5
ioctl(17, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeacf4c8) = 0
ioctl(18, GPIOHANDLE_SET_LINE_VALUES_IOCTL, 0xbeacf4c8) = 0
write(7, "40000", 5
Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.524616] Internal error: : 1028 [#1] PREEMPT SMP ARM

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.637435] Process rc_test_motors (pid: 2595, stack limit = 0x8fa35472)
)                    = ?
+++ killed by SIGSEGV +++

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.648543] 7e00:                                     00009c40 d9e97e6c db7feb00 c07a1918
fish: “strace rc_test_motors -d 1” terminated by signal SIGSEGV (Address boundary error)

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.681409] 7e80: d9e97ed4 c079f3e0 d9e9a600 00000003 00000000 d9e97f60 d9e97ebc d9e97ea8

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.689627] 7ea0: c08d65e8 c079f3ec c08d65c0 d9e9a600 d9e97ed4 d9e97ec0 c03abb1c c08d65cc

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.697843] 7ec0: 00000005 d9e9a600 d9e97f0c d9e97ed8 c03ab10c c03abae0 00000003 00000000

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.706059] 7ee0: dab68d88 c03ab014 d9e15180 beacf480 d9e97f60 00000000 00000000 00000004

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.714275] 7f00: d9e97f24 d9e97f10 c0319564 c03ab020 00000005 d9e15180 d9e97f54 d9e97f28

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.722492] 7f20: c031976c c0319548 00000000 c033bd58 d9e15180 c1506e08 d9e15180 beacf480

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.730707] 7f40: 00000003 00000000 d9e97f94 d9e97f58 c0319a4c c03196c4 00000003 00000000

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.738924] 7f60: 00000003 00000000 ffffe000 172d0e31 b6f1e614 b6f09000 00000041 00000004

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.747141] 7f80: c0101204 d9e96000 d9e97fa4 d9e97f98 c0319ad8 c03199e4 00000000 d9e97fa8

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.755358] 7fa0: c01011e4 c0319acc b6f1e614 b6f09000 00000007 beacf480 00000005 00000000

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.763574] 7fc0: b6f1e614 b6f09000 00000041 00000004 00000000 00000000 004b4000 00000000

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.771791] 7fe0: 00000004 beacf468 b6eaa34b b6eac526 600d0030 00000007 00000000 00000000

Message from syslogd@SCUTTLE at Sep 18 05:15:31 ...
 kernel:[  565.884981] Code: e5940000 eb0524e7 e594a02c e6ff7077 (e1da30b0)

Looks similar to #211
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Assignees
No one assigned
Labels
None yet
Projects
None yet
Milestone
No milestone
Development

No branches or pull requests
1 participant
@ansarid