Re: odd make/build output on ^Z / fg

Pavo Banicevic wrote:
> On 7/9/09, Robert Watson <rwatson_at_freebsd.org> wrote:
>> Today I suspended a kernel build with ^Z to free up a bit of I/O bandwidth
>> on
>> a box.  When I re-foregrounded, all appeared fine for a bit, but later when
>> I
>> switched back to the xterm I found this:
>>
>> ototypes  -Wmissing-prototypes -Wpointer-arith -Winline -Wcast-qual  -Wundef
>> -Wno-pointer-sign -fformat-extensions -nostdinc  -I. -I../../..
>> -I../../../contrib/altq -D_KERNEL -DHAVE_KERNEL_OPTION_HEADERS -include
>> opt_global.h -fno-common -finline-limit=8000 --param inline-unit-growth=100
>> --param large-function-growth=1000  -mno-align-long-strings
>> -mpreferred-stack-boundary=2  -mno-mmx -mno-3dnow -mno-sse -mno-sse2
>> -mno-sse3
>> -ffreestanding -fstack-protector -Werror  ../../../i386/acpica/acpi_wakeup.c
>> couldn't resume mac_pipe.o: No such process
>> *** Signal 1
>> couldn't resume audit_arg.o: No such process
>> *** Signal 1
>> couldn't resume nlm_prot_impl.o: No such process
>> *** Signal 1
>> couldn't resume nfs_serv.o: No such process
>> *** Signal 1
>> couldn't resume nfs_vnops.o: No such process
>> *** Signal 1
>> couldn't resume modules-obj: No such process
>> ===> usb/uether (obj)
>> ===> usb/aue (obj)
>> ...
>> ===> xfs (obj)
>> ===> xl (obj)
>> ===> zfs (obj)
>> ===> zlib (obj)
>> *** Signal 1
>> 6 errors
>>
>> I've never seen that before, but I also don't suspend builds all that
>> frequently.  New bug?  Old bug?
> 
> Today I got this when building kernel:
> 
> # fg
> make -j6 buildkernel
> *** Stopped -- signal 18
> Child (49737) not in table?
> couldn't resume aicasm_macro_gram.o: No such process
> *** Signal 1
> 1 error
> *** Error code 2
> 1 error
> *** Error code 2
> 1 error
> 
> 
> I have kern.randompid=777, and I did stopped buildworld just before
> building kernel. Maybe this is (tcsh) shell issue?

It's a very old bug.  I first saw it after changes made by phk to the 
way make communicates with its child processes several years ago, but 
it's not clear where the problem lies.

Kris