Re: [MLton] Bug report (Ur/Web, ARM)

It isn't mmap2() which failed because the strace says it returned a
value not equal to -1.
I don't know what dis fail though.
Matthew will have a better idea.

On Wed, Oct 21, 2015 at 9:32 AM, Jason Pepas <[email protected]> wrote:
> Matthew,
>
> Thank you for your thorough reply and explanation.
>
> As you suspected, running mlton with no arguments results in the same error.
>
> Here is the last few lines of output of strace:
>
> open("/lib/arm-linux-gnueabi/libc.so.6", O_RDONLY) = 3
> read(3, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0XX\1\0004\0\0\0"...,
> 512) = 512
> lseek(3, 1231644, SEEK_SET)             = 1231644
> 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
> lseek(3, 1231204, SEEK_SET)             = 1231204
> read(3, "A'\0\0\0aeabi\0\1\35\0\0\0\0054T\0\6\2\10\1\t\1\22\4\24\1\25\1"...,
> 40) = 40
> fstat64(3, {st_mode=S_IFREG|0755, st_size=1233044, ...}) = 0
> mmap2(NULL, 1275160, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 3, 0) =
> 0xb6d26000
> mprotect(0xb6e50000, 32768, PROT_NONE)  = 0
> mmap2(0xb6e58000, 12288, PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0x12a) = 0xb6e58000
> mmap2(0xb6e5b000, 9496, PROT_READ|PROT_WRITE,
> MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0xb6e5b000
> close(3)                                = 0
> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
> 0xb6d25000
> set_tls(0xb6d254c0, 0xb6d25b97, 0xb6d25b98, 0xb6d254c0, 0xb6fb8000) = 0
> mprotect(0xb6e58000, 8192, PROT_READ)   = 0
> mprotect(0xb6f91000, 4096, PROT_READ)   = 0
> mprotect(0xb6fb7000, 4096, PROT_READ)   = 0
> munmap(0xb6fb0000, 22122)               = 0
> sysinfo({uptime=606121, loads=[20768, 9216, 5568] totalram=29065216,
> freeram=3432448, sharedram=0, bufferram=1458176} totalswap=1073737728,
> freeswap=1069465600, procs=51}) = 0
> mmap2(NULL, 24576, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) =
> 0xb6fb0000
> mprotect(0xb6fb0000, 4096, PROT_NONE)   = 0
> mprotect(0xb6fb1000, 16384, PROT_READ|PROT_WRITE|PROT_EXEC) = 0
> mprotect(0xb6fb5000, 4096, PROT_NONE)   = 0
> sigaltstack({ss_sp=0xb6fb3000, ss_flags=0, ss_size=8192}, NULL) = 0
> mmap2(0xf8000000, 1802240, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS,
> -1, 0) = 0xb6b6d000
> write(2, "unhandled exception: ", 21unhandled exception: )   = 21
> write(2, "SysErr", 6SysErr)                   = 6
> write(2, "\n", 1
> )                       = 1
> write(2, "MLton bug: ", 11MLton bug: )             = 11
> write(2, "unhandled exception in Basis Lib"..., 36unhandled exception in
> Basis Library) = 36
> write(2, "\nPlease send a bug report to MLt"..., 46
> Please send a bug report to [email protected].
> ) = 46
> exit_group(2)                           = ?
>
>
>
> I would guess this means that the last call to mmap2() failed?
>
>
> Thanks,
> Jason
>
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