Re: Segmentation fault in "make check" test_istream_multiplex for 2.3.0 on Solaris Sparc

Hi!

Thank you for these, we'll look into them!

Aki

On 06.02.2018 22:37, Rainer Jung wrote:

Hi there,

I get a crash when doing "make check" for version 2.3.0 on Solaris Sparc.

The build was done with gcc 7.3.0.

The crash happens in ioloop-poll.c line 181 when running test_istream_multiplex.c:

#0  io_loop_handler_run_internal (ioloop=ioloop@entry=0x130dd0) at ioloop-poll.c:181 181                     if (pollfd->revents != 0) {

Due to the code

   180                  pollfd = &ctx->fds[ctx->fd_index[io->fd]]; 181                  if (pollfd->revents != 0) {

I can see in gdb, that io->fd is "-1", so using it as an array index doesn't make much sense:

(gdb) print io->fd $2 = -1

and the resulting address of pollfd is not valid. The full io struct is:

(gdb) print *io $3 = {io = {condition = IO_READ, source_filename = 0x8c680 "test-multiplex.c", source_linenum = 84, pending = false, callback = 0x33c14 , context = 0xc4b80 , ioloop = 0x130dd0, ctx = 0x0}, prev = 0xecfc0, next = 0xd3548, refcount = 1, fd = -1, istream = 0xd31e8}

Full stack:

[Current thread is 2 (Thread 1 (LWP 1))] (gdb) bt full #0  io_loop_handler_run_internal (ioloop=ioloop@entry=0x130dd0) at ioloop-poll.c:181 ctx = 0xd05b8 pollfd = 0x526cd8b0 tv = {tv_sec = 2147483, tv_usec = 0} io = 0xecd50 msecs = <optimized out> ret = 1 call = <optimized out> #1  0x000574a8 in io_loop_handler_run (ioloop=<optimized out>) at ioloop.c:666 No locals. #2  0x0005779c in io_loop_run (ioloop=0x130dd0) at ioloop.c:639 __func__ = "io_loop_run" #3  0x00033f7c in test_multiplex_stream () at test-multiplex.c:147 ioloop = 0x130dd0 fds = {6, 7} os = 0x0 is = 0x0 ichan1 = 0xd31e8 ochan1 = 0xd3470 io = 0xd34c8 ichan0 = 0x1b10e8 ochan0 = 0x1b1290 #4  test_multiplex () at test-multiplex.c:164 No locals. #5  0x0003e3d4 in test_run_named_funcs (tests=tests@entry=0x80444 , match=match@entry=0x7fd38 "") at test-common.c:255 _data_stack_cur_id = 2 i = <optimized out> #6  0x0003f1d8 in test_run_named_with_fatals (match=0x7fd38 "", tests=0x80444 , fatals=0x7fde0 ) at test-common.c:337 No locals. #7  0x0001e024 in _start ()

I unfortunately don't know, why the fd field is "-1".

Regards and thanks

Rainer