Re: [PATCH 5.4 000/134] 5.4.231-rc1 review

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On 2/3/23 11:07, Eric Biggers wrote:
On Fri, Feb 03, 2023 at 10:54:21AM -0800, Eric Biggers wrote:
On Fri, Feb 03, 2023 at 09:18:26AM -0800, Guenter Roeck wrote:
On Fri, Feb 03, 2023 at 05:45:19PM +0100, Greg Kroah-Hartman wrote:
On Fri, Feb 03, 2023 at 07:56:19AM -0800, Guenter Roeck wrote:
On Fri, Feb 03, 2023 at 11:11:45AM +0100, Greg Kroah-Hartman wrote:
This is the start of the stable review cycle for the 5.4.231 release.
There are 134 patches in this series, all will be posted as a response
to this one.  If anyone has any issues with these being applied, please
let me know.

Responses should be made by Sun, 05 Feb 2023 10:09:58 +0000.
Anything received after that time might be too late.


Building ia64:defconfig ... failed
--------------
Error log:
<stdin>:1511:2: warning: #warning syscall clone3 not implemented [-Wcpp]
arch/ia64/kernel/mca_drv.c: In function 'mca_handler_bh':
arch/ia64/kernel/mca_drv.c:179:9: error: implicit declaration of function 'make_task_dead'

Caused by "exit: Add and use make_task_dead.". Did that really have to be backported ?

Yup, it does!

Eric, any help with this?


Adding "#include <linux/sched/task.h>" to the affected file would probably
be the easy fix. I did a quick check, and it works.

Note that the same problem is seen in v4.14.y and v4.19.y. Later
kernels don't have the problem.


This problem arises because <linux/mm.h> transitively includes
<linux/sched/task.h> in 5.10 and later, but not in 5.4 and earlier.

Greg, any preference for how to handle this situation?

Just add '#include <linux/sched/task.h>' to the affected .c file (and hope there
are no more affected .c files in the other arch directories) and call it a day?

Or should we backport the transitive inclusion (i.e., the #include added by
commit 80fbaf1c3f29)?  Or move the declaration of make_task_dead() into
<linux/kernel.h> so that it's next to do_exit()?

One question: do *all* the arches actually get built as part of the testing for
each stable release?  If so, we can just add the #include to the .c files that
need it.  If not, then it would be safer to take one of the other approaches.


Yes, I do build all architectures for each stable release.

FWIW, I only noticed that one build failure due to this problem.

Guenter




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