linux-kernel - Re: Linux 4.19-rc1

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Date:   Mon, 27 Aug 2018 06:44:59 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Linux 4.19-rc1

On Sun, Aug 26, 2018 at 02:49:14PM -0700, Linus Torvalds wrote:
> So two weeks have passed, and the merge window for 4.19 is over.
> 
[ ... ]
> 
> Anyway, go forth and test,
> 

Build results:
	total: 132 pass: 129 fail: 3
Failed builds: 
	riscv:defconfig 
	riscv:allnoconfig 
	sparc32:allmodconfig 
Qemu test results:
	total: 299 pass: 297 fail: 2
Failed tests: 
	riscv:virt:defconfig:initrd 
	riscv:virt:defconfig:virtio-blk:rootfs

---
riscv:

In file included from arch/riscv/include/asm/tlb.h:17:0,
                 from arch/riscv/include/asm/pgalloc.h:19,
		 from arch/riscv/mm/fault.c:30:
include/asm-generic/tlb.h: In function 'tlb_flush_mmu_tlbonly':
include/asm-generic/tlb.h:147:2: error: implicit declaration of function 'tlb_flush'

Known problem, patch submitted.

---
sparc32:allmodconfig:

arch/sparc/kernel/head_32.o: In function `current_pc':
arch/sparc/kernel/.tmp_head_32.o:(.head.text+0x5040): relocation truncated to fit: R_SPARC_WDISP22 against `.init.text'
arch/sparc/kernel/head_32.o: In function `halt_notsup':
arch/sparc/kernel/.tmp_head_32.o:(.head.text+0x5100): relocation truncated to fit: R_SPARC_WDISP22 against `.init.text'
arch/sparc/kernel/head_32.o: In function `leon_init':
arch/sparc/kernel/.tmp_head_32.o:(.init.text+0xa4): relocation truncated to fit: R_SPARC_WDISP22 against symbol `leon_smp_cpu_startup' defined in .text section
in arch/sparc/kernel/trampoline_32.o
arch/sparc/kernel/process_32.o:(.fixup+0x4): relocation truncated to fit: R_SPARC_WDISP22 against `.text'
arch/sparc/kernel/process_32.o:(.fixup+0xc): relocation truncated to fit: R_SPARC_WDISP22 against `.text'
arch/sparc/kernel/signal_32.o:(.fixup+0x0): relocation truncated to fit: R_SPARC_WDISP22 against `.text'
arch/sparc/kernel/signal_32.o:(.fixup+0x8): relocation truncated to fit: R_SPARC_WDISP22 against `.text'
arch/sparc/kernel/signal_32.o:(.fixup+0x10): relocation truncated to fit: R_SPARC_WDISP22 against `.text'
arch/sparc/kernel/signal_32.o:(.fixup+0x18): relocation truncated to fit: R_SPARC_WDISP22 against `.text'
arch/sparc/kernel/signal_32.o:(.fixup+0x20): relocation truncated to fit: R_SPARC_WDISP22 against `.text'
arch/sparc/kernel/signal_32.o:(.fixup+0x28): additional relocation overflows omitted from the output

For the most part this is due to calls / short jumps between .head.text,
.text, and .init.text.  Probably old, now seen because the image is now
too large.

---
On top of that, there are various runtime warnings.

sh:

WARNING: CPU: 0 PID: 932 at mm/slab.c:2666 cache_alloc_refill+0x8a/0x594

Known problem. Fix was under discussion. I don't know if it was accepted.

https://marc.info/?t=153301426900002&r=1&w=2
https://www.spinics.net/lists/linux-sh/msg53298.html

---
sparc:

WARNING: CPU: 0 PID: 1 at ./include/linux/dma-mapping.h:516 esp_sbus_probe+0x408/0x6e8
WARNING: CPU: 0 PID: 1 at ./include/linux/dma-mapping.h:516 sparc_lance_probe_one+0x428/0x4f

Missing initialization of coherent_dma_mask in the respective drivers.

---
Each platform driver instantiated through a devicetree node now generates
the following warning:

esp ffd38e00: DMA mask not set

It isn't a traceback so it may fly under the radar. There is nothing the
drivers can do about it; the message is generated by the core before the
driver probe function is called. No idea what a correct fix might be.

Guenter