* Re: [PATCH 6.12 000/122] 6.12.11-rc1 review
[not found] ` <Z5AVm4cQDGjnDet2@eldamar.lan>
@ 2025-01-22 7:04 ` Jon Hunter
2025-01-22 9:01 ` Ron Economos
0 siblings, 1 reply; 3+ messages in thread
From: Jon Hunter @ 2025-01-22 7:04 UTC (permalink / raw)
To: Salvatore Bonaccorso, Greg Kroah-Hartman
Cc: stable, patches, linux-kernel, torvalds, akpm, linux, shuah,
patches, lkft-triage, pavel, f.fainelli, sudipm.mukherjee, srw,
rwarsow, conor, hargar, broonie, linux-tegra@vger.kernel.org
Hi Greg,
On 21/01/2025 21:46, Salvatore Bonaccorso wrote:
> Hi Greg,
>
> On Tue, Jan 21, 2025 at 06:50:48PM +0100, Greg Kroah-Hartman wrote:
>> This is the start of the stable review cycle for the 6.12.11 release.
>> There are 122 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 Thu, 23 Jan 2025 17:45:02 +0000.
>> Anything received after that time might be too late.
>>
>> The whole patch series can be found in one patch at:
>> https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.12.11-rc1.gz
>> or in the git tree and branch at:
>> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-6.12.y
>> and the diffstat can be found below.
>
> Built and lightly tested, when booting I'm noticing the following in
> dmesg:
>
> [ +0.007932] ------------[ cut here ]------------
> [ +0.000003] WARNING: CPU: 1 PID: 0 at kernel/sched/fair.c:5250 place_entity+0x127/0x130
> [ +0.000006] Modules linked in: ahci(E) libahci(E) crc32_pclmul(E) xhci_hcd(E) libata(E) psmouse(E) crc32c_intel(E) >
> [ +0.000021] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Tainted: G E 6.12.11-rc1+ #1
> [ +0.000004] Tainted: [E]=UNSIGNED_MODULE
> [ +0.000002] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
> [ +0.000002] RIP: 0010:place_entity+0x127/0x130
> [ +0.000003] Code: 01 6b 28 c6 43 52 00 5b 5d 41 5c 41 5d 41 5e e9 2f 83 bc 00 b9 02 00 00 00 49 c1 ee 0a 49 39 ce 4>
> [ +0.000002] RSP: 0018:ffffbe1f400f8d08 EFLAGS: 00010046
> [ +0.000003] RAX: 0000000000000000 RBX: ffff9ed7c0c0f200 RCX: 00000000000000c2
> [ +0.000002] RDX: 0000000000000000 RSI: 000000000000001d RDI: 000000000078cfd5
> [ +0.000002] RBP: 0000000029d40d60 R08: 00000000a8e83f00 R09: 0000000000000002
> [ +0.000002] R10: 00000000006e3ab2 R11: ffff9ed7d4056690 R12: ffff9ed83bd360c0
> [ +0.000002] R13: 0000000000000000 R14: 00000000000000c2 R15: 000000000016e360
> [ +0.000003] FS: 0000000000000000(0000) GS:ffff9ed83bd00000(0000) knlGS:0000000000000000
> [ +0.000002] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> [ +0.000002] CR2: 00007f9f5a7245d8 CR3: 0000000100bfc000 CR4: 0000000000350ef0
> [ +0.000003] Call Trace:
> [ +0.000003] <IRQ>
> [ +0.000002] ? place_entity+0x127/0x130
> [ +0.000002] ? __warn.cold+0x93/0xf6
> [ +0.000004] ? place_entity+0x127/0x130
> [ +0.000003] ? report_bug+0xff/0x140
> [ +0.000005] ? handle_bug+0x58/0x90
> [ +0.000002] ? exc_invalid_op+0x17/0x70
> [ +0.000003] ? asm_exc_invalid_op+0x1a/0x20
> [ +0.000006] ? place_entity+0x127/0x130
> [ +0.000003] ? place_entity+0x99/0x130
> [ +0.000004] reweight_entity+0x1af/0x1d0
> [ +0.000003] enqueue_task_fair+0x30c/0x5e0
> [ +0.000005] enqueue_task+0x35/0x150
> [ +0.000004] activate_task+0x3a/0x60
> [ +0.000003] sched_balance_rq+0x7c6/0xee0
> [ +0.000008] sched_balance_domains+0x25b/0x350
> [ +0.000005] handle_softirqs+0xcf/0x280
> [ +0.000006] __irq_exit_rcu+0x8d/0xb0
> [ +0.000003] sysvec_apic_timer_interrupt+0x71/0x90
> [ +0.000003] </IRQ>
> [ +0.000002] <TASK>
> [ +0.000002] asm_sysvec_apic_timer_interrupt+0x1a/0x20
> [ +0.000002] RIP: 0010:pv_native_safe_halt+0xf/0x20
> [ +0.000004] Code: 22 d7 e9 b4 01 01 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 0>
> [ +0.000002] RSP: 0018:ffffbe1f400bbed8 EFLAGS: 00000202
> [ +0.000003] RAX: 0000000000000001 RBX: ffff9ed7c033e600 RCX: ffff9ed7c0647830
> [ +0.000001] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 00000000000017b4
> [ +0.000002] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000
> [ +0.000002] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000
> [ +0.000001] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
> [ +0.000006] default_idle+0x9/0x20
> [ +0.000003] default_idle_call+0x29/0x100
> [ +0.000002] do_idle+0x1fe/0x240
> [ +0.000005] cpu_startup_entry+0x29/0x30
> [ +0.000003] start_secondary+0x11e/0x140
> [ +0.000004] common_startup_64+0x13e/0x141
> [ +0.000007] </TASK>
> [ +0.000001] ---[ end trace 0000000000000000 ]---
>
> Not yet bisected which change causes it.
I am seeing the same on Tegra. I have not looked to see which change
this is yet either.
Jon
--
nvpublic
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH 6.12 000/122] 6.12.11-rc1 review
2025-01-22 7:04 ` [PATCH 6.12 000/122] 6.12.11-rc1 review Jon Hunter
@ 2025-01-22 9:01 ` Ron Economos
2025-01-22 9:29 ` Greg Kroah-Hartman
0 siblings, 1 reply; 3+ messages in thread
From: Ron Economos @ 2025-01-22 9:01 UTC (permalink / raw)
To: Jon Hunter, Salvatore Bonaccorso, Greg Kroah-Hartman
Cc: stable, patches, linux-kernel, torvalds, akpm, linux, shuah,
patches, lkft-triage, pavel, f.fainelli, sudipm.mukherjee, srw,
rwarsow, conor, hargar, broonie, linux-tegra@vger.kernel.org
On 1/21/25 23:04, Jon Hunter wrote:
> Hi Greg,
>
> On 21/01/2025 21:46, Salvatore Bonaccorso wrote:
>> Hi Greg,
>>
>> On Tue, Jan 21, 2025 at 06:50:48PM +0100, Greg Kroah-Hartman wrote:
>>> This is the start of the stable review cycle for the 6.12.11 release.
>>> There are 122 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 Thu, 23 Jan 2025 17:45:02 +0000.
>>> Anything received after that time might be too late.
>>>
>>> The whole patch series can be found in one patch at:
>>> https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.12.11-rc1.gz
>>>
>>> or in the git tree and branch at:
>>> git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
>>> linux-6.12.y
>>> and the diffstat can be found below.
>>
>> Built and lightly tested, when booting I'm noticing the following in
>> dmesg:
>>
>> [ +0.007932] ------------[ cut here ]------------
>> [ +0.000003] WARNING: CPU: 1 PID: 0 at kernel/sched/fair.c:5250
>> place_entity+0x127/0x130
>> [ +0.000006] Modules linked in: ahci(E) libahci(E) crc32_pclmul(E)
>> xhci_hcd(E) libata(E) psmouse(E) crc32c_intel(E) >
>> [ +0.000021] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Tainted:
>> G E 6.12.11-rc1+ #1
>> [ +0.000004] Tainted: [E]=UNSIGNED_MODULE
>> [ +0.000002] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009),
>> BIOS 1.16.2-debian-1.16.2-1 04/01/2014
>> [ +0.000002] RIP: 0010:place_entity+0x127/0x130
>> [ +0.000003] Code: 01 6b 28 c6 43 52 00 5b 5d 41 5c 41 5d 41 5e e9
>> 2f 83 bc 00 b9 02 00 00 00 49 c1 ee 0a 49 39 ce 4>
>> [ +0.000002] RSP: 0018:ffffbe1f400f8d08 EFLAGS: 00010046
>> [ +0.000003] RAX: 0000000000000000 RBX: ffff9ed7c0c0f200 RCX:
>> 00000000000000c2
>> [ +0.000002] RDX: 0000000000000000 RSI: 000000000000001d RDI:
>> 000000000078cfd5
>> [ +0.000002] RBP: 0000000029d40d60 R08: 00000000a8e83f00 R09:
>> 0000000000000002
>> [ +0.000002] R10: 00000000006e3ab2 R11: ffff9ed7d4056690 R12:
>> ffff9ed83bd360c0
>> [ +0.000002] R13: 0000000000000000 R14: 00000000000000c2 R15:
>> 000000000016e360
>> [ +0.000003] FS: 0000000000000000(0000) GS:ffff9ed83bd00000(0000)
>> knlGS:0000000000000000
>> [ +0.000002] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
>> [ +0.000002] CR2: 00007f9f5a7245d8 CR3: 0000000100bfc000 CR4:
>> 0000000000350ef0
>> [ +0.000003] Call Trace:
>> [ +0.000003] <IRQ>
>> [ +0.000002] ? place_entity+0x127/0x130
>> [ +0.000002] ? __warn.cold+0x93/0xf6
>> [ +0.000004] ? place_entity+0x127/0x130
>> [ +0.000003] ? report_bug+0xff/0x140
>> [ +0.000005] ? handle_bug+0x58/0x90
>> [ +0.000002] ? exc_invalid_op+0x17/0x70
>> [ +0.000003] ? asm_exc_invalid_op+0x1a/0x20
>> [ +0.000006] ? place_entity+0x127/0x130
>> [ +0.000003] ? place_entity+0x99/0x130
>> [ +0.000004] reweight_entity+0x1af/0x1d0
>> [ +0.000003] enqueue_task_fair+0x30c/0x5e0
>> [ +0.000005] enqueue_task+0x35/0x150
>> [ +0.000004] activate_task+0x3a/0x60
>> [ +0.000003] sched_balance_rq+0x7c6/0xee0
>> [ +0.000008] sched_balance_domains+0x25b/0x350
>> [ +0.000005] handle_softirqs+0xcf/0x280
>> [ +0.000006] __irq_exit_rcu+0x8d/0xb0
>> [ +0.000003] sysvec_apic_timer_interrupt+0x71/0x90
>> [ +0.000003] </IRQ>
>> [ +0.000002] <TASK>
>> [ +0.000002] asm_sysvec_apic_timer_interrupt+0x1a/0x20
>> [ +0.000002] RIP: 0010:pv_native_safe_halt+0xf/0x20
>> [ +0.000004] Code: 22 d7 e9 b4 01 01 00 0f 1f 40 00 90 90 90 90 90
>> 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 0>
>> [ +0.000002] RSP: 0018:ffffbe1f400bbed8 EFLAGS: 00000202
>> [ +0.000003] RAX: 0000000000000001 RBX: ffff9ed7c033e600 RCX:
>> ffff9ed7c0647830
>> [ +0.000001] RDX: 0000000000000000 RSI: 0000000000000001 RDI:
>> 00000000000017b4
>> [ +0.000002] RBP: 0000000000000001 R08: 0000000000000001 R09:
>> 0000000000000000
>> [ +0.000002] R10: 0000000000000001 R11: 0000000000000000 R12:
>> 0000000000000000
>> [ +0.000001] R13: 0000000000000000 R14: 0000000000000000 R15:
>> 0000000000000000
>> [ +0.000006] default_idle+0x9/0x20
>> [ +0.000003] default_idle_call+0x29/0x100
>> [ +0.000002] do_idle+0x1fe/0x240
>> [ +0.000005] cpu_startup_entry+0x29/0x30
>> [ +0.000003] start_secondary+0x11e/0x140
>> [ +0.000004] common_startup_64+0x13e/0x141
>> [ +0.000007] </TASK>
>> [ +0.000001] ---[ end trace 0000000000000000 ]---
>>
>> Not yet bisected which change causes it.
>
>
> I am seeing the same on Tegra. I have not looked to see which change
> this is yet either.
>
> Jon
>
Seeing this on RISC-V also.
Jan 21 23:51:10 riscv64 kernel: WARNING: CPU: 3 PID: 16 at
kernel/sched/fair.c:5250 place_entity+0x108/0x110
Jan 21 23:51:10 riscv64 kernel: Modules linked in:
Jan 21 23:51:10 riscv64 kernel: CPU: 3 UID: 0 PID: 16 Comm: rcu_preempt
Not tainted 6.12.11-rc1 #2
Jan 21 23:51:10 riscv64 kernel: Hardware name: SiFive HiFive Unmatched
A00 (DT)
Jan 21 23:51:10 riscv64 kernel: epc : place_entity+0x108/0x110
Jan 21 23:51:10 riscv64 kernel: ra : place_entity+0x9c/0x110
Jan 21 23:51:10 riscv64 kernel: epc : ffffffff8006ed68 ra :
ffffffff8006ecfc sp : ffffffc60009bac0
Jan 21 23:51:10 riscv64 kernel: gp : ffffffff81fa6318 tp :
ffffffd680323b00 t0 : 0000000000000000
Jan 21 23:51:10 riscv64 kernel: t1 : 0000000000000000 t2 :
0000000000000000 s0 : ffffffc60009bb00
Jan 21 23:51:10 riscv64 kernel: s1 : ffffffd6809f5000 a0 :
000000000053b491 a1 : 0000000000000000
Jan 21 23:51:10 riscv64 kernel: a2 : 0000000000000002 a3 :
0000000000000000 a4 : 0000000000000000
Jan 21 23:51:10 riscv64 kernel: a5 : 0000000000000000 a6 :
0000000000000000 a7 : 0000000000000000
Jan 21 23:51:10 riscv64 kernel: s2 : 0000000031acb37b s3 :
0000000000000000 s4 : 000000000006920d
Jan 21 23:51:10 riscv64 kernel: s5 : ffffffd9fedb2a00 s6 :
ffffffd9fedb2900 s7 : ffffffd6829cbb00
Jan 21 23:51:10 riscv64 kernel: s8 : 0000000000000000 s9 :
0000000000000001 s10: 0000000000000201
Jan 21 23:51:10 riscv64 kernel: s11: 0000000000000000 t3 :
0000000000000000 t4 : 0000000000000000
Jan 21 23:51:10 riscv64 kernel: t5 : 0000000000000000 t6 : 0000000000000000
Jan 21 23:51:10 riscv64 kernel: status: 0000000200000100 badaddr:
0000000000000002 cause: 0000000000000003
Jan 21 23:51:10 riscv64 kernel: [<ffffffff8006ed68>]
place_entity+0x108/0x110
Jan 21 23:51:10 riscv64 kernel: [<ffffffff8006efe2>]
reweight_entity+0x182/0x1b0
Jan 21 23:51:10 riscv64 kernel: [<ffffffff8006f0c8>]
update_cfs_group+0x78/0xa8
Jan 21 23:51:10 riscv64 kernel: [<ffffffff8006fc4c>]
dequeue_entities+0x114/0x3d8
Jan 21 23:51:10 riscv64 kernel: [<ffffffff80070084>]
pick_task_fair+0xb4/0x110
Jan 21 23:51:10 riscv64 kernel: [<ffffffff80077a3c>]
pick_next_task_fair+0x1c/0x2f0
Jan 21 23:51:10 riscv64 kernel: [<ffffffff80dc5556>] __schedule+0x176/0xc20
Jan 21 23:51:10 riscv64 kernel: [<ffffffff80dc6022>] schedule+0x22/0x148
Jan 21 23:51:10 riscv64 kernel: [<ffffffff80dcc072>]
schedule_timeout+0x82/0x178
Jan 21 23:51:10 riscv64 kernel: [<ffffffff800cb996>]
rcu_gp_fqs_loop+0x346/0x4e8
Jan 21 23:51:10 riscv64 kernel: [<ffffffff800cea62>]
rcu_gp_kthread+0x12a/0x150
Jan 21 23:51:10 riscv64 kernel: [<ffffffff8004db58>] kthread+0xc8/0xe8
Jan 21 23:51:10 riscv64 kernel: [<ffffffff80dceefe>] ret_from_fork+0xe/0x18
Jan 21 23:51:10 riscv64 kernel: ---[ end trace 0000000000000000 ]---
Reverting commit 11d21f2ae4a254aeef84fcf7b6314f5dd045151f "sched/fair:
Fix EEVDF entity placement bug causing scheduling lag" removes the warning.
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [PATCH 6.12 000/122] 6.12.11-rc1 review
2025-01-22 9:01 ` Ron Economos
@ 2025-01-22 9:29 ` Greg Kroah-Hartman
0 siblings, 0 replies; 3+ messages in thread
From: Greg Kroah-Hartman @ 2025-01-22 9:29 UTC (permalink / raw)
To: Ron Economos
Cc: Jon Hunter, Salvatore Bonaccorso, stable, patches, linux-kernel,
torvalds, akpm, linux, shuah, patches, lkft-triage, pavel,
f.fainelli, sudipm.mukherjee, srw, rwarsow, conor, hargar,
broonie, linux-tegra@vger.kernel.org
On Wed, Jan 22, 2025 at 01:01:42AM -0800, Ron Economos wrote:
> On 1/21/25 23:04, Jon Hunter wrote:
> > Hi Greg,
> >
> > On 21/01/2025 21:46, Salvatore Bonaccorso wrote:
> > > Hi Greg,
> > >
> > > On Tue, Jan 21, 2025 at 06:50:48PM +0100, Greg Kroah-Hartman wrote:
> > > > This is the start of the stable review cycle for the 6.12.11 release.
> > > > There are 122 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 Thu, 23 Jan 2025 17:45:02 +0000.
> > > > Anything received after that time might be too late.
> > > >
> > > > The whole patch series can be found in one patch at:
> > > > https://www.kernel.org/pub/linux/kernel/v6.x/stable-review/patch-6.12.11-rc1.gz
> > > >
> > > > or in the git tree and branch at:
> > > > git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
> > > > linux-6.12.y
> > > > and the diffstat can be found below.
> > >
> > > Built and lightly tested, when booting I'm noticing the following in
> > > dmesg:
> > >
> > > [ +0.007932] ------------[ cut here ]------------
> > > [ +0.000003] WARNING: CPU: 1 PID: 0 at kernel/sched/fair.c:5250
> > > place_entity+0x127/0x130
> > > [ +0.000006] Modules linked in: ahci(E) libahci(E) crc32_pclmul(E)
> > > xhci_hcd(E) libata(E) psmouse(E) crc32c_intel(E) >
> > > [ +0.000021] CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Tainted:
> > > G E 6.12.11-rc1+ #1
> > > [ +0.000004] Tainted: [E]=UNSIGNED_MODULE
> > > [ +0.000002] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009),
> > > BIOS 1.16.2-debian-1.16.2-1 04/01/2014
> > > [ +0.000002] RIP: 0010:place_entity+0x127/0x130
> > > [ +0.000003] Code: 01 6b 28 c6 43 52 00 5b 5d 41 5c 41 5d 41 5e e9
> > > 2f 83 bc 00 b9 02 00 00 00 49 c1 ee 0a 49 39 ce 4>
> > > [ +0.000002] RSP: 0018:ffffbe1f400f8d08 EFLAGS: 00010046
> > > [ +0.000003] RAX: 0000000000000000 RBX: ffff9ed7c0c0f200 RCX:
> > > 00000000000000c2
> > > [ +0.000002] RDX: 0000000000000000 RSI: 000000000000001d RDI:
> > > 000000000078cfd5
> > > [ +0.000002] RBP: 0000000029d40d60 R08: 00000000a8e83f00 R09:
> > > 0000000000000002
> > > [ +0.000002] R10: 00000000006e3ab2 R11: ffff9ed7d4056690 R12:
> > > ffff9ed83bd360c0
> > > [ +0.000002] R13: 0000000000000000 R14: 00000000000000c2 R15:
> > > 000000000016e360
> > > [ +0.000003] FS: 0000000000000000(0000) GS:ffff9ed83bd00000(0000)
> > > knlGS:0000000000000000
> > > [ +0.000002] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> > > [ +0.000002] CR2: 00007f9f5a7245d8 CR3: 0000000100bfc000 CR4:
> > > 0000000000350ef0
> > > [ +0.000003] Call Trace:
> > > [ +0.000003] <IRQ>
> > > [ +0.000002] ? place_entity+0x127/0x130
> > > [ +0.000002] ? __warn.cold+0x93/0xf6
> > > [ +0.000004] ? place_entity+0x127/0x130
> > > [ +0.000003] ? report_bug+0xff/0x140
> > > [ +0.000005] ? handle_bug+0x58/0x90
> > > [ +0.000002] ? exc_invalid_op+0x17/0x70
> > > [ +0.000003] ? asm_exc_invalid_op+0x1a/0x20
> > > [ +0.000006] ? place_entity+0x127/0x130
> > > [ +0.000003] ? place_entity+0x99/0x130
> > > [ +0.000004] reweight_entity+0x1af/0x1d0
> > > [ +0.000003] enqueue_task_fair+0x30c/0x5e0
> > > [ +0.000005] enqueue_task+0x35/0x150
> > > [ +0.000004] activate_task+0x3a/0x60
> > > [ +0.000003] sched_balance_rq+0x7c6/0xee0
> > > [ +0.000008] sched_balance_domains+0x25b/0x350
> > > [ +0.000005] handle_softirqs+0xcf/0x280
> > > [ +0.000006] __irq_exit_rcu+0x8d/0xb0
> > > [ +0.000003] sysvec_apic_timer_interrupt+0x71/0x90
> > > [ +0.000003] </IRQ>
> > > [ +0.000002] <TASK>
> > > [ +0.000002] asm_sysvec_apic_timer_interrupt+0x1a/0x20
> > > [ +0.000002] RIP: 0010:pv_native_safe_halt+0xf/0x20
> > > [ +0.000004] Code: 22 d7 e9 b4 01 01 00 0f 1f 40 00 90 90 90 90 90
> > > 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 0>
> > > [ +0.000002] RSP: 0018:ffffbe1f400bbed8 EFLAGS: 00000202
> > > [ +0.000003] RAX: 0000000000000001 RBX: ffff9ed7c033e600 RCX:
> > > ffff9ed7c0647830
> > > [ +0.000001] RDX: 0000000000000000 RSI: 0000000000000001 RDI:
> > > 00000000000017b4
> > > [ +0.000002] RBP: 0000000000000001 R08: 0000000000000001 R09:
> > > 0000000000000000
> > > [ +0.000002] R10: 0000000000000001 R11: 0000000000000000 R12:
> > > 0000000000000000
> > > [ +0.000001] R13: 0000000000000000 R14: 0000000000000000 R15:
> > > 0000000000000000
> > > [ +0.000006] default_idle+0x9/0x20
> > > [ +0.000003] default_idle_call+0x29/0x100
> > > [ +0.000002] do_idle+0x1fe/0x240
> > > [ +0.000005] cpu_startup_entry+0x29/0x30
> > > [ +0.000003] start_secondary+0x11e/0x140
> > > [ +0.000004] common_startup_64+0x13e/0x141
> > > [ +0.000007] </TASK>
> > > [ +0.000001] ---[ end trace 0000000000000000 ]---
> > >
> > > Not yet bisected which change causes it.
> >
> >
> > I am seeing the same on Tegra. I have not looked to see which change
> > this is yet either.
> >
> > Jon
> >
> Seeing this on RISC-V also.
>
> Jan 21 23:51:10 riscv64 kernel: WARNING: CPU: 3 PID: 16 at
> kernel/sched/fair.c:5250 place_entity+0x108/0x110
> Jan 21 23:51:10 riscv64 kernel: Modules linked in:
> Jan 21 23:51:10 riscv64 kernel: CPU: 3 UID: 0 PID: 16 Comm: rcu_preempt Not
> tainted 6.12.11-rc1 #2
> Jan 21 23:51:10 riscv64 kernel: Hardware name: SiFive HiFive Unmatched A00
> (DT)
> Jan 21 23:51:10 riscv64 kernel: epc : place_entity+0x108/0x110
> Jan 21 23:51:10 riscv64 kernel: ra : place_entity+0x9c/0x110
> Jan 21 23:51:10 riscv64 kernel: epc : ffffffff8006ed68 ra : ffffffff8006ecfc
> sp : ffffffc60009bac0
> Jan 21 23:51:10 riscv64 kernel: gp : ffffffff81fa6318 tp : ffffffd680323b00
> t0 : 0000000000000000
> Jan 21 23:51:10 riscv64 kernel: t1 : 0000000000000000 t2 : 0000000000000000
> s0 : ffffffc60009bb00
> Jan 21 23:51:10 riscv64 kernel: s1 : ffffffd6809f5000 a0 : 000000000053b491
> a1 : 0000000000000000
> Jan 21 23:51:10 riscv64 kernel: a2 : 0000000000000002 a3 : 0000000000000000
> a4 : 0000000000000000
> Jan 21 23:51:10 riscv64 kernel: a5 : 0000000000000000 a6 : 0000000000000000
> a7 : 0000000000000000
> Jan 21 23:51:10 riscv64 kernel: s2 : 0000000031acb37b s3 : 0000000000000000
> s4 : 000000000006920d
> Jan 21 23:51:10 riscv64 kernel: s5 : ffffffd9fedb2a00 s6 : ffffffd9fedb2900
> s7 : ffffffd6829cbb00
> Jan 21 23:51:10 riscv64 kernel: s8 : 0000000000000000 s9 : 0000000000000001
> s10: 0000000000000201
> Jan 21 23:51:10 riscv64 kernel: s11: 0000000000000000 t3 : 0000000000000000
> t4 : 0000000000000000
> Jan 21 23:51:10 riscv64 kernel: t5 : 0000000000000000 t6 : 0000000000000000
> Jan 21 23:51:10 riscv64 kernel: status: 0000000200000100 badaddr:
> 0000000000000002 cause: 0000000000000003
> Jan 21 23:51:10 riscv64 kernel: [<ffffffff8006ed68>]
> place_entity+0x108/0x110
> Jan 21 23:51:10 riscv64 kernel: [<ffffffff8006efe2>]
> reweight_entity+0x182/0x1b0
> Jan 21 23:51:10 riscv64 kernel: [<ffffffff8006f0c8>]
> update_cfs_group+0x78/0xa8
> Jan 21 23:51:10 riscv64 kernel: [<ffffffff8006fc4c>]
> dequeue_entities+0x114/0x3d8
> Jan 21 23:51:10 riscv64 kernel: [<ffffffff80070084>]
> pick_task_fair+0xb4/0x110
> Jan 21 23:51:10 riscv64 kernel: [<ffffffff80077a3c>]
> pick_next_task_fair+0x1c/0x2f0
> Jan 21 23:51:10 riscv64 kernel: [<ffffffff80dc5556>] __schedule+0x176/0xc20
> Jan 21 23:51:10 riscv64 kernel: [<ffffffff80dc6022>] schedule+0x22/0x148
> Jan 21 23:51:10 riscv64 kernel: [<ffffffff80dcc072>]
> schedule_timeout+0x82/0x178
> Jan 21 23:51:10 riscv64 kernel: [<ffffffff800cb996>]
> rcu_gp_fqs_loop+0x346/0x4e8
> Jan 21 23:51:10 riscv64 kernel: [<ffffffff800cea62>]
> rcu_gp_kthread+0x12a/0x150
> Jan 21 23:51:10 riscv64 kernel: [<ffffffff8004db58>] kthread+0xc8/0xe8
> Jan 21 23:51:10 riscv64 kernel: [<ffffffff80dceefe>] ret_from_fork+0xe/0x18
> Jan 21 23:51:10 riscv64 kernel: ---[ end trace 0000000000000000 ]---
>
> Reverting commit 11d21f2ae4a254aeef84fcf7b6314f5dd045151f "sched/fair: Fix
> EEVDF entity placement bug causing scheduling lag" removes the warning.
Ah, thanks! I'll go revert that now and push out a -rc2.
greg k-h
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2025-01-22 7:04 ` [PATCH 6.12 000/122] 6.12.11-rc1 review Jon Hunter
2025-01-22 9:01 ` Ron Economos
2025-01-22 9:29 ` Greg Kroah-Hartman
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