Re: [PATCH 1/2] tools/btmgmt: Fix crash in completion in interactive mode

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Hi Szymon,

On Thu, Feb 12, 2015, Szymon Janc wrote:
> Use separate indexes while iterating over all_cmd and interactive_cmd.
> Fix following crash:
> 
> [mgmt]# ==2224== Invalid read of size 1
> ==2224==    at 0x4A092F2: strlen (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
> ==2224==    by 0x323C8860AD: strdup (in /usr/lib64/libc-2.18.so)
> ==2224==    by 0x323EC1D550: rl_completion_matches (in /usr/lib64/libreadline.so.6.2)
> ==2224==    by 0x402BBC: cmd_completion (btmgmt.c:3427)
> ==2224==    by 0x323EC1D608: ??? (in /usr/lib64/libreadline.so.6.2)
> ==2224==    by 0x323EC1D783: rl_complete_internal (in /usr/lib64/libreadline.so.6.2)
> ==2224==    by 0x323EC156DD: _rl_dispatch_subseq (in /usr/lib64/libreadline.so.6.2)
> ==2224==    by 0x323EC159FF: readline_internal_char (in /usr/lib64/libreadline.so.6.2)
> ==2224==    by 0x323EC2AB6C: rl_callback_read_char (in /usr/lib64/libreadline.so.6.2)
> ==2224==    by 0x4032E8: prompt_read (btmgmt.c:3551)
> ==2224==    by 0x419048: io_callback (io-mainloop.c:123)
> ==2224==    by 0x419842: mainloop_run (mainloop.c:157)
> ==2224==  Address 0x68 is not stack'd, malloc'd or (recently) free'd
> ---
>  tools/btmgmt.c | 13 +++++++------
>  1 file changed, 7 insertions(+), 6 deletions(-)

This patch has been applied. Thanks.

For your second patch I went actually in the other directions and used
NELEM() everywhere. I prefer that since it's a stronger guarantee of the
table length than having to remember to put an empty element at the end
of it.

Johan
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