Re: Linux 6.0-rc1

[Guenter Roeck]

On Sun, Aug 14, 2022 at 04:41:33PM -0700, Linus Torvalds wrote:
> So here we are, two weeks later, and the merge window has closed.
> 
[ ... ]
> 
> But whatever you call it, please help test this, so that we can get it
> all in shape for the final release (hopefully early October).
> 

Build results:
	total: 149 pass: 147 fail: 2
Failed builds:
	powerpc:allmodconfig
	powerpc:ppc32_allmodconfig
Qemu test results:
	total: 483 pass: 458 fail: 25
Failed tests:
	<various arm>

Details below.

Guenter

---
Build:

powerpc:allmodconfig
powerpc:ppc32_allmodconfig

include/linux/random.h: In function 'add_latent_entropy':
include/linux/random.h:25:46: error: 'latent_entropy' undeclared

Caused by commit 36d4b36b6959 ("lib/nodemask: inline next_node_in() and
node_random()"). Fix is at:

https://www.spinics.net/lists/kernel/msg4468633.html

===========
qemu tests:

Crashes:

Various crashes in pl011_probe() due to commit f2d3b9a46e0e ("ARM: 9220/1:
amba: Remove deferred device addition"). The suggested fix is at
https://lore.kernel.org/lkml/20220811190747.797081-1-isaacmanjarres@xxxxxxxxxx/T/
and mostly works but exposes or introduces another crash. The suggested fix for
that crash introduces yet another crash. See
https://lore.kernel.org/lkml/20220811195234.GA4018948@xxxxxxxxxxxx/T/#m2192446c13d46612a00c4d499da7896d692db75c
for details.

Note: I just saw v2 of the proposed fix. I'll need to retest. 

--------

Warnings:

Seen in various ppc boot tests:

BUG: sleeping function called from invalid context at kernel/locking/mutex.c:580
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1, name: swapper
preempt_count: 1, expected: 0
RCU nest depth: 0, expected: 0
1 lock held by swapper/1:
 #0: c157efb0 (hose_spinlock){+.+.}-{2:2}, at: pcibios_alloc_controller+0x64/0x220
Preemption disabled at:
[<00000000>] 0x0
CPU: 0 PID: 1 Comm: swapper Not tainted 5.19.0-yocto-standard+ #1
Call Trace:
[d101dc90] [c073b264] dump_stack_lvl+0x50/0x8c (unreliable)
[d101dcb0] [c0093b70] __might_resched+0x258/0x2a8
[d101dcd0] [c0d3e634] __mutex_lock+0x6c/0x6ec
[d101dd50] [c0a84174] of_alias_get_id+0x50/0xf4
[d101dd80] [c002ec78] pcibios_alloc_controller+0x1b8/0x220
[d101ddd0] [c140c9dc] pmac_pci_init+0x198/0x784
[d101de50] [c140852c] discover_phbs+0x30/0x4c
[d101de60] [c0007fd4] do_one_initcall+0x94/0x344
[d101ded0] [c1403b40] kernel_init_freeable+0x1a8/0x22c
[d101df10] [c00086e0] kernel_init+0x34/0x160
[d101df30] [c001b334] ret_from_kernel_thread+0x5c/0x64

=============================
[ BUG: Invalid wait context ]
5.19.0-yocto-standard+ #1 Tainted: G        W
-----------------------------
swapper/1 is trying to lock:
c16a9dd8 (of_mutex){+.+.}-{3:3}, at: of_alias_get_id+0x50/0xf4
other info that might help us debug this:
context-{4:4}
1 lock held by swapper/1:
 #0: c157efb0 (hose_spinlock){+.+.}-{2:2}, at: pcibios_alloc_controller+0x64/0x220
stack backtrace:
CPU: 0 PID: 1 Comm: swapper Tainted: G        W          5.19.0-yocto-standard+ #1
Call Trace:
[d101dbc0] [c073b264] dump_stack_lvl+0x50/0x8c (unreliable)
[d101dbe0] [c00bb8e8] __lock_acquire+0x8c4/0x2278
[d101dc60] [c00ba4b8] lock_acquire+0x148/0x3b4
[d101dcd0] [c0d3e688] __mutex_lock+0xc0/0x6ec
[d101dd50] [c0a84174] of_alias_get_id+0x50/0xf4
[d101dd80] [c002ec78] pcibios_alloc_controller+0x1b8/0x220
[d101ddd0] [c140c9dc] pmac_pci_init+0x198/0x784
[d101de50] [c140852c] discover_phbs+0x30/0x4c
[d101de60] [c0007fd4] do_one_initcall+0x94/0x344
[d101ded0] [c1403b40] kernel_init_freeable+0x1a8/0x22c
[d101df10] [c00086e0] kernel_init+0x34/0x160
[d101df30] [c001b334] ret_from_kernel_thread+0x5c/0x64

Bisect points to commit 0fe1e96fef0a ("powerpc/pci: Prefer PCI domain
assignment via DT 'linux,pci-domain' and alias").

Fix is at:

https://lore.kernel.org/all/20220815065550.1303620-1-mpe@xxxxxxxxxxxxxx/

---
riscv32/riscv64:

[   15.272080] DEBUG_LOCKS_WARN_ON(!lockdep_hardirqs_enabled())
[   15.272421] WARNING: CPU: 0 PID: 140 at kernel/locking/lockdep.c:5510 check_flags+0xe2/0x1c2
[   15.272813] Modules linked in:
[   15.273132] CPU: 0 PID: 140 Comm: S01syslogd Tainted: G                 N 5.19.0-14184-g69dac8e431af #1
[   15.273428] Hardware name: riscv-virtio,qemu (DT)
[   15.273701] epc : check_flags+0xe2/0x1c2
[   15.273893]  ra : check_flags+0xe2/0x1c2
[   15.274040] epc : ffffffff80a8ea50 ra : ffffffff80a8ea50 sp : ff200000107cbcb0
[   15.274228]  gp : ffffffff819fec50 tp : ff6000000494d640 t0 : ffffffff81833628
[   15.274416]  t1 : 0000000000000001 t2 : 2d2d2d2d2d2d2d2d s0 : ff200000107cbcd0
[   15.274608]  s1 : ffffffff81a00130 a0 : 0000000000000030 a1 : ffffffff818925e8
[   15.274801]  a2 : 0000000000000010 a3 : fffffffffffffffe a4 : 0000000000000000
[   15.274997]  a5 : 0000000000000000 a6 : ffffffff80066d80 a7 : 0000000000000038
[   15.275179]  s2 : ffffffff81a024e0 s3 : ffffffff818935b0 s4 : ff200000107cbe28
[   15.275365]  s5 : ffffffff80e27708 s6 : 0000000200000022 s7 : ffffffffffffffff
[   15.275558]  s8 : ffffffff8249da18 s9 : 0000000000001000 s10: 0000000000000001
[   15.275745]  s11: 0000000000000001 t3 : ffffffff824740af t4 : ffffffff824740af
[   15.275926]  t5 : ffffffff824740b0 t6 : ff200000107cbaa8
[   15.276079] status: 0000000200000100 badaddr: 0000000000000000 cause: 0000000000000003
[   15.276355] [<ffffffff80a8eba8>] lock_is_held_type+0x78/0x14a
[   15.276565] [<ffffffff8003d648>] __might_resched+0x26/0x232
[   15.276717] [<ffffffff8003d892>] __might_sleep+0x3e/0x66
[   15.276861] [<ffffffff8002262c>] get_signal+0xa6/0x8f6
[   15.277007] [<ffffffff800051da>] do_notify_resume+0x68/0x418
[   15.277160] [<ffffffff80003af4>] ret_from_exception+0x0/0x10
[   15.277365] irq event stamp: 2974
[   15.277474] hardirqs last  enabled at (2973): [<ffffffff80a9761c>] _raw_spin_unlock_irqrestore+0x54/0x62
[   15.277705] hardirqs last disabled at (2974): [<ffffffff8000812c>] __trace_hardirqs_off+0xc/0x14
[   15.277933] softirqs last  enabled at (1650): [<ffffffff80a98092>] __do_softirq+0x3e2/0x51c
[   15.278168] softirqs last disabled at (1633): [<ffffffff80016fc8>] __irq_exit_rcu+0xb4/0xdc
[   15.278399] ---[ end trace 0000000000000000 ]---
[   15.278699] possible reason: unannotated irqs-on.
[   15.278838] irq event stamp: 2974
[   15.278929] hardirqs last  enabled at (2973): [<ffffffff80a9761c>] _raw_spin_unlock_irqrestore+0x54/0x62
[   15.279141] hardirqs last disabled at (2974): [<ffffffff8000812c>] __trace_hardirqs_off+0xc/0x14
[   15.279339] softirqs last  enabled at (1650): [<ffffffff80a98092>] __do_softirq+0x3e2/0x51c
[   15.279534] softirqs last disabled at (1633): [<ffffffff80016fc8>] __irq_exit_rcu+0xb4/0xdc

Caused or exposed by commit ba6cfef057e1 ("riscv: enable Docker requirements
in defconfig").