Alex Kiernan 07526deab6 systemd: Backport OpenSSL BUF_MEM fix
Building `systemd-resolve` from systemd 242 with OpenSSL 1.1.1c and enabling
DNS over TLS ends up calling abort (on 32 bit armhf):

  Program terminated with signal SIGABRT, Aborted.
  #0  __libc_do_syscall () at libc-do-syscall.S:49
  49	libc-do-syscall.S: No such file or directory.
  (gdb) where
  #0  __libc_do_syscall () at libc-do-syscall.S:49
  #1  0xb6940ea4 in __libc_signal_restore_set (set=0xbec68b78) at ../sysdeps/unix/sysv/linux/internal-signals.h:84
  #2  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:48
  #3  0xb69336e0 in __GI_abort () at abort.c:79
  #4  0xb6968428 in __libc_message (action=action@entry=do_abort, fmt=<optimized out>) at ../sysdeps/posix/libc_fatal.c:181
  #5  0xb696c7e6 in malloc_printerr (str=<optimized out>) at malloc.c:5352
  #6  0xb696ca1a in munmap_chunk (p=<optimized out>) at malloc.c:2840
  #7  0xb6bd1c4a in CRYPTO_clear_realloc (str=0xd0e59a, old_len=388, num=<optimized out>, file=0xb6c300dc "../../../../../../workspace/sources/openssl/crypto/buffer/buffer.c", line=135)
      at ../../../../../../workspace/sources/openssl/crypto/mem.c:290
  #8  0xb6b5da3a in BUF_MEM_grow_clean (str=0xcfb960, len=len@entry=393) at ../../../../../../workspace/sources/openssl/crypto/buffer/buffer.c:135
  #9  0xb6b486a0 in mem_write (b=0xcf8300, in=0xd07c6b "\027\003\003", inl=24) at ../../../../../../workspace/sources/openssl/crypto/bio/bss_mem.c:235
  #10 0xb6b45c86 in bwrite_conv (bio=<optimized out>, data=<optimized out>, datal=<optimized out>, written=0xbec68ec8) at ../../../../../../workspace/sources/openssl/crypto/bio/bio_meth.c:77
  #11 0xb6b452d4 in bio_write_intern (written=0xbec68ec8, dlen=24, data=0xd07c6b, b=0xcf8300) at ../../../../../../workspace/sources/openssl/crypto/bio/bio_lib.c:343
  #12 bio_write_intern (b=0xcf8300, data=0xd07c6b, dlen=24, written=0xbec68ec8) at ../../../../../../workspace/sources/openssl/crypto/bio/bio_lib.c:320
  #13 0xb6b455b2 in BIO_write (b=<optimized out>, data=<optimized out>, dlen=<optimized out>) at ../../../../../../workspace/sources/openssl/crypto/bio/bio_lib.c:363
  #14 0xb6cabd1a in ssl3_write_pending (s=s@entry=0xcfd2d8, type=type@entry=23, buf=buf@entry=0xcfcc28 "", len=len@entry=2, written=written@entry=0xbec698b0) at ../../../../../../workspace/sources/openssl/ssl/record/rec_layer_s3.c:1146
  #15 0xb6cac72e in do_ssl3_write (s=s@entry=0xcfd2d8, type=type@entry=23, buf=buf@entry=0xcfcc28 "", pipelens=pipelens@entry=0xbec698b4, numpipes=numpipes@entry=1, create_empty_fragment=create_empty_fragment@entry=0,
      written=written@entry=0xbec698b0) at ../../../../../../workspace/sources/openssl/ssl/record/rec_layer_s3.c:1107
  #16 0xb6cac92e in ssl3_write_bytes (s=0xcfd2d8, type=23, buf_=0xcfcc28, len=<optimized out>, written=0xbec699c0) at ../../../../../../workspace/sources/openssl/ssl/record/rec_layer_s3.c:613
  #17 0xb6cb1698 in ssl3_write (s=<optimized out>, buf=0xcfcc28, len=2, written=0xbec699c0) at ../../../../../../workspace/sources/openssl/ssl/s3_lib.c:4460
  #18 0xb6cb87b2 in ssl_write_internal (s=<optimized out>, buf=buf@entry=0xcfcc28, num=num@entry=2, written=written@entry=0xbec699c0) at ../../../../../../workspace/sources/openssl/ssl/ssl_lib.c:1943
  #19 0xb6cb8896 in SSL_write (s=<optimized out>, buf=buf@entry=0xcfcc28, num=num@entry=2) at ../../../../../../workspace/sources/openssl/ssl/ssl_lib.c:1957
  #20 0x004ddac8 in dnstls_stream_write (stream=stream@entry=0xcfca60, buf=0xcfcc28 "", count=2) at ../git/src/resolve/resolved-dnstls-openssl.c:270
  #21 0x004d8d5c in dns_stream_writev (s=s@entry=0xcfca60, iov=iov@entry=0xbec69b4c, iovcnt=iovcnt@entry=2, flags=flags@entry=0) at ../git/src/resolve/resolved-dns-stream.c:225
  #22 0x004d9516 in on_stream_io (es=<optimized out>, fd=<optimized out>, revents=4, userdata=0xcfca60) at ../git/src/resolve/resolved-dns-stream.c:334
  #23 0xb6e7f020 in source_dispatch (s=0xcf3658) at ../git/src/libsystemd/sd-event/sd-event.c:2821
  #24 0xb6e806b0 in sd_event_dispatch (e=e@entry=0xced6d0) at ../git/src/libsystemd/sd-event/sd-event.c:3234
  #25 0xb6e807f6 in sd_event_run (e=0xced6d0, timeout=<optimized out>) at ../git/src/libsystemd/sd-event/sd-event.c:3291
  #26 0xb6e809bc in sd_event_loop (e=0xced6d0) at ../git/src/libsystemd/sd-event/sd-event.c:3312
  #27 0x004bb64c in run (argv=<optimized out>, argc=<optimized out>) at ../git/src/resolve/resolved.c:84
  #28 main (argc=<optimized out>, argv=<optimized out>) at ../git/src/resolve/resolved.c:91

(From OE-Core rev: b11ddab19bc7c0ce35b95345181de8a708268472)

Signed-off-by: Alex Kiernan <alex.kiernan@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
2019-06-14 22:48:22 +01:00
2018-02-24 10:31:45 +00:00

QEMU Emulation Targets
======================

To simplify development, the build system supports building images to
work with the QEMU emulator in system emulation mode. Several architectures
are currently supported in 32 and 64 bit variants:

  * ARM (qemuarm + qemuarm64)
  * x86 (qemux86 + qemux86-64)
  * PowerPC (qemuppc only)
  * MIPS (qemumips + qemumips64)

Use of the QEMU images is covered in the Yocto Project Reference Manual.
The appropriate MACHINE variable value corresponding to the target is given
in brackets.
Description
No description provided
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