linux-kernel - Re: Linux 6.19-rc8

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Message-ID: <f817c158-412b-4fd1-9941-9c2ff421b91a@roeck-us.net>
Date: Tue, 3 Feb 2026 18:16:12 -0800
From: Guenter Roeck <linux@...ck-us.net>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Chin-Ting Kuo <chin-ting_kuo@...eedtech.com>,
	Christian Brauner <brauner@...nel.org>,
	Stephen Eta Zhou <stephen.eta.zhou@...il.com>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Mark Brown <broonie@...nel.org>
Subject: Re: Linux 6.19-rc8

On Sun, Feb 01, 2026 at 03:17:02PM -0800, Linus Torvalds wrote:
> We had a nice calm week, and everything looks good. Not a lot of
> changes, and they are all small and tidy.
> 
> Mainly drivers - gpu and networking as usual - and it's all tiny. The
> biggest patch in there is literally just removing a duplicated driver,
> and even that patch isn't very big. I think the next biggest patch is
> to a selftest. The rest is typically just few-liners.
> 
> So things all look good, and unless something odd happens we'll have a
> final 6.19 next weekend.
> 
> But please do keep testing, just in case somebody finds that "something odd".
> 

It has been a while, primarily because lack of time and the scope of
problems. ICE, failures triggered by OS updates, and bisects pointing
to merges is unusual. But here we are. I'll probably just stop testing
the various odd broken builds/tests going forward.

Guenter

----
Build results:
	total: 158 pass: 154 fail: 4
Failed builds:
	mips:allmodconfig
	sh:allnoconfig
	sh:tinyconfig
	sh:se7619_defconfig
Qemu test results:
	total: 614 pass: 602 fail: 12
Failed tests:
	arm:realview-pbx-a9:realview_defconfig:realview_pb:net=default:arm-realview-pbx-a9:initrd
	arm:integratorcp:integrator_defconfig:mem128:net=default:integratorcp:initrd
	arm:integratorcp:integrator_defconfig:mem128:sd:net=default:integratorcp:ext2
	arm:integratorcp:integrator_defconfig:mem128:sd:net=default:integratorcp:cramfs
	arm:vexpress-a15:multi_v7_defconfig:nolocktests:sd:mem128:net=default:vexpress-v2p-ca15-tc1:ext2
	arm:fuji-bmc:aspeed_g5_defconfig:net=nic:aspeed-bmc-facebook-fuji:initrd
	arm:fuji-bmc:aspeed_g5_defconfig:sd2:net=nic:aspeed-bmc-facebook-fuji:ext2
	arm:fuji-bmc:aspeed_g5_defconfig:usb1:net=nic:aspeed-bmc-facebook-fuji:ext2
	arm:bletchley-bmc:aspeed_g5_defconfig:net=nic:aspeed-bmc-facebook-bletchley:initrd
	arm:bletchley-bmc:aspeed_g5_defconfig:usb0:net=nic:aspeed-bmc-facebook-bletchley:ext2
	arm:bletchley-bmc:aspeed_g5_defconfig:usb1:net=nic:aspeed-bmc-facebook-bletchley:ext2
	arm:bletchley-bmc:aspeed_g5_defconfig:mmc:net=nic:aspeed-bmc-facebook-bletchley:ext2
Unit test results:
	pass: 766946 fail: 1

Details:

mips:allmodconfig
	Building mips:allmodconfig ... failed
	    Error log:
	    Error: configuration 'pcb110' references undefined image 'ramdisk' in property 'ramdisk'
	    Seen with Ubuntu 24.04 after recent updates. Not kernel version
	    specific (now also seen in 6.18.y). Apparently triggered by a
	    Ubuntu update, but I have no idea which one.

sh:allnoconfig
sh:tinyconfig
sh:se7619_defconfig
	All NOMMU builds with gcc (version independent) trigger ICE:
during RTL pass: final
In file included from kernel/nstree.c:8:
kernel/nstree.c: In function '__se_sys_listns':
include/linux/syscalls.h:262:9: internal compiler error: in change_address_1, at emit-rtl.cc:2299
  262 |         }                                                               \
      |         ^
include/linux/syscalls.h:237:9: note: in expansion of macro '__SYSCALL_DEFINEx'
  237 |         __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
      |         ^~~~~~~~~~~~~~~~~
include/linux/syscalls.h:229:36: note: in expansion of macro 'SYSCALL_DEFINEx'
  229 | #define SYSCALL_DEFINE4(name, ...) SYSCALL_DEFINEx(4, _##name, __VA_ARGS__)
      |                                    ^~~~~~~~~~~~~~~
kernel/nstree.c:784:1: note: in expansion of macro 'SYSCALL_DEFINE4'
  784 | SYSCALL_DEFINE4(listns, const struct ns_id_req __user *, req,
      | ^~~~~~~~~~~~~~~
0x7bc9f942a1c9 __libc_start_call_main
	../sysdeps/nptl/libc_start_call_main.h:58
0x7bc9f942a28a __libc_start_main_impl
	../csu/libc-start.c:360

The problem moves around to different functions if I comment out part
of the code.

Effectively all NOMMU SH4 builds with gcc (as far as I can see gcc version
independent) are now broken. I have no idea what causes the problem. Seen
since commit 76b6f5dfb3fda ("nstree: add listns()") but I have no idea what
actually triggers the problem.

Qemu test results:
    total: 614 pass: 602 fail: 12
Failed tests:
    arm:realview-pbx-a9:realview_defconfig:realview_pb:net=default:arm-realview-pbx-a9:initrd
    arm:integratorcp:integrator_defconfig:mem128:net=default:integratorcp:initrd
    arm:integratorcp:integrator_defconfig:mem128:sd:net=default:integratorcp:ext2
    arm:integratorcp:integrator_defconfig:mem128:sd:net=default:integratorcp:cramfs
	Crash. Bisects to commit 640594a04f119338 ("clocksource/drivers/timer-sp804:
	Fix read_current_timer() issue when clock source is not registered").
	Reverting that patch fixes the problem.
    arm:vexpress-a15:multi_v7_defconfig:nolocktests:sd:mem128:net=default:vexpress-v2p-ca15-tc1:ext2
	Dies silently; probably crashes. Bisect points to commit 5028f42416ea
	("Merge tag 'timers-clocksource-2025-11-30' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip").
	Actual cause unknown.
    arm:fuji-bmc:aspeed_g5_defconfig:net=nic:aspeed-bmc-facebook-fuji:initrd
    arm:fuji-bmc:aspeed_g5_defconfig:sd2:net=nic:aspeed-bmc-facebook-fuji:ext2
    arm:fuji-bmc:aspeed_g5_defconfig:usb1:net=nic:aspeed-bmc-facebook-fuji:ext2
	Ethernet interface failure, combined with the crash seen below with
	bletchley-bmc after commit 64d87ccfae33.
	Bisect on mainline points to commit 9b966ae42235 ("Merge drm/drm-next into
	drm-misc-next"). Bisect on the spi branch points to commit 3d66d3dbd514c8
	("Merge existing fixes from spi/for-6.18 into new branch"), suggesting
	that there may be some kind of merge damage or I am missing something
	essential.
    arm:bletchley-bmc:aspeed_g5_defconfig:net=nic:aspeed-bmc-facebook-bletchley:initrd
    arm:bletchley-bmc:aspeed_g5_defconfig:usb0:net=nic:aspeed-bmc-facebook-bletchley:ext2
    arm:bletchley-bmc:aspeed_g5_defconfig:usb1:net=nic:aspeed-bmc-facebook-bletchley:ext2
    arm:bletchley-bmc:aspeed_g5_defconfig:mmc:net=nic:aspeed-bmc-facebook-bletchley:ext2
	Null pointer crash during spi controller probe after "vmalloc_node_range for size
	134221824 failed: Address range restricted to 0xf0800000 - 0xff800000". Bisects
	to commit 64d87ccfae33 ("spi: aspeed: Only map necessary address window region")
	which can not be reverted due to interference with subsequent patches.
Unit test results:
    pass: 766946 fail: 1
Failed unit tests:
    x86_64:q35:pm_runtime_error_test
    x86_64:q35:pm_runtime_test_cases
	Not analyzed.