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Re: [RFA/gdbserver] Unexpected EOF read from socket after inferior exits.

From: Thomas Schwinge <thomas at codesourcery dot com>
To: Joel Brobecker <brobecker at adacore dot com>
Cc: gdb-patches at sourceware dot org
Date: Wed, 21 Jul 2010 22:49:06 +0200
Subject: Re: [RFA/gdbserver] Unexpected EOF read from socket after inferior exits.
References: <1278451801-10588-1-git-send-email-brobecker@adacore.com> <87mxtlkgac.fsf@dirichlet.schwinge.homeip.net>

Hello!

On 2010-07-20 21:13, I wrote:
>     Running /scratch/thomas/issue8927-FM_mips64el-linux-gnu/src/gdb-mainline/gdb/testsuite/gdb.threads/current-lwp-dead.exp ...
>     [...]
>     > 'LD_LIBRARY_PATH=[...] [ld.so] [gdbserver] ':2887' 'current-lwp-dead'
>     Process current-lwp-dead created; pid = 20009
>     Listening on port 2887
>     target remote philidor:2887
>     Remote debugging using philidor:2887
>     Remote debugging from host 10.0.0.218
>     [...]
>     Breakpoint 2, fn_return (unused=0x0) at /scratch/thomas/issue8927-FM_mips64el-linux-gnu/src/gdb-mainline/gdb/testsuite/gdb.threads/current-lwp-dead.c:45
>     45        return 0;     /* at-fn_return */
>     (gdb) PASS: gdb.threads/current-lwp-dead.exp: continue to breakpoint: fn_return
>     testcase /scratch/thomas/issue8927-FM_mips64el-linux-gnu/src/gdb-mainline/gdb/testsuite/gdb.threads/current-lwp-dead.exp completed in 2 seconds
>     Running /scratch/thomas/issue8927-FM_mips64el-linux-gnu/src/gdb-mainline/gdb/testsuite/gdb.threads/execl.exp ...
>
> Here this test has finished, the remote gdbserver terminates, and the
> next test is about to be started.
>
>     Executing on host: mips64el-linux-gnu-gcc /scratch/thomas/issue8927-FM_mips64el-linux-gnu/src/gdb-mainline/gdb/testsuite/gdb.threads/execl.c  [...]
>     Killing all inferiors
>     Segmentation fault
>
> Instead of terminating, the remote gdbserver crashed with a segfault.
>
>     (gdb) bt
>     #0  0x1003b068 in thread_db_mourn (proc=0x0) at /scratch/thomas/issue8927-FM_mips64el-linux-gnu/src/gdb-mainline/gdb/gdbserver/thread-db.c:889
>     #1  0x1002bc3c in linux_mourn (process=0x0) at /scratch/thomas/issue8927-FM_mips64el-linux-gnu/src/gdb-mainline/gdb/gdbserver/linux-low.c:896
>     #2  0x1001085c in handle_v_cont (own_buf=0x555800d0 "W00") at /scratch/thomas/issue8927-FM_mips64el-linux-gnu/src/gdb-mainline/gdb/gdbserver/server.c:1785

I'm testing a patch for gdbserver.


Regards,
 Thomas

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References:
- [RFA/gdbserver] Unexpected EOF read from socket after inferior exits.
  - From: Joel Brobecker
- Re: [RFA/gdbserver] Unexpected EOF read from socket after inferior exits.
  - From: Thomas Schwinge

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