Message-ID: <CAGETcx9nbxH6hETP2LUENG8EV3v771qi9NpkFd-mix3G-NdZUA@mail.gmail.com>
Date:   Thu, 16 Sep 2021 19:27:22 -0700
From:   Saravana Kannan <saravanak@...gle.com>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Frank Rowand <frowand.list@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <olteanv@...il.com>,
        Russell King <linux@...linux.org.uk>, kernel-team@...roid.com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Revert "of: property: fw_devlink: Add support for
 "phy-handle" property"

On Thu, Sep 16, 2021 at 7:21 PM Florian Fainelli <f.fainelli@...il.com> wrote:
>
>
>
> On 9/15/2021 1:19 AM, Saravana Kannan wrote:
> > This reverts commit cf4b94c8530d14017fbddae26aad064ddc42edd4.
> >
> > Some PHYs pointed to by "phy-handle" will never bind to a driver until a
> > consumer attaches to it. And when the consumer attaches to it, they get
> > forcefully bound to a generic PHY driver. In such cases, parsing the
> > phy-handle property and creating a device link will prevent the consumer
> > from ever probing. We don't want that. So revert support for
> > "phy-handle" property until we come up with a better mechanism for
> > binding PHYs to generic drivers before a consumer tries to attach to it.
> >
> > Signed-off-by: Saravana Kannan <saravanak@...gle.com>
>
> Thanks for getting this revert submitted, I just ran a bisection this
> afternoon that pointed to this offending commit. It would cause the dead
> lock

Dead lock in the kernel? Or do you mean just a hang waiting forever for network?

> on boot with drivers/net/dsa/bcm_sf2.c pasted below.

The log is too jumbled up to be readable (word wrap I suppose) and
maybe even multiple thread printing at the same time.

> Saravana, can
> you CC on me on your fix or what you would want me to be testing?

By fix, I assume you mean when I bring back phy-handle with a proper
fix to handle the case in the commit text? Yeah, that's going to take
a while. It's brewing in my head and there are some issues that's not
fully resolved. But I haven't had time to code it up or dig into the
net code to make sure it'll work. But yes, I'll CC you when I do so
you can test it with this case.

-Saravana

>
> Rob can you send this to Linus quickly so we can have it in net/master
> soon thereafter? Thanks a lot!
>
> [    3.577221] unimac-mdio f0b403c0.mdio: Broadcom UniMAC MDIO bus
> [    4.480608]  sda: sda1 sda2 sda3 sda4
> [    4.486248] sd 0:0:0:0: [sda] Attached SCSI disk
> [   25.492127] rcu: INFO: rcu_sched self-detected stall on CPU
> [   25.497722] rcu:     2-....: (21000 ticks this GP)
> idle=3e2/1/0x40000002 softirq=292/292 fqs=5240
> [   25.506448]  (t=21015 jiffies g=-395 q=69)
> [   25.510560] NMI backtrace for cpu 2
> [   25.514062] CPU: 2 PID: 1 Comm: swapper/0 Not tainted
> 5.14.0-rc1-gcf4b94c8530d #100
> [   25.521739] Hardware name: Broadcom STB (Flattened Device Tree)
> [   25.527672] Backtrace:
> [   25.530131] [<c0cba30c>] (dump_backtrace) from [<c0cba5bc>]
> (show_stack+0x20/0x24)
> [   25.537741]  r7:c0e021cc r6:00000002 r5:c0f71914 r4:60000193
> [   25.543412] [<c0cba59c>] (show_stack) from [<c0cbf5f4>]
> (dump_stack_lvl+0x48/0x54)
> [   25.551009] [<c0cbf5ac>] (dump_stack_lvl) from [<c0cbf618>]
> (dump_stack+0x18/0x1c)
> [   25.558602]  r5:00000000 r4:00000002
> [   25.562187] [<c0cbf600>] (dump_stack) from [<c06bf89c>]
> (nmi_cpu_backtrace+0xc8/0xf4)
> [   25.570045] [<c06bf7d4>] (nmi_cpu_backtrace) from [<c06bf9f0>]
> (nmi_trigger_cpumask_backtrace+0x128/0x140)
> [   25.579729]  r5:c22056e0 r4:c020ff84
> [   25.583313] [<c06bf8c8>] (nmi_trigger_cpumask_backtrace) from
> [<c02111c0>] (arch_trigger_cpumask_backtrace+0x20/0x24)
> [   25.593957]  r7:00000002 r6:c230e186 r5:c2204e0c r4:c2249d00
> [   25.599629] [<c02111a0>] (arch_trigger_cpumask_backtrace) from
> [<c0cbbf00>] (rcu_dump_cpu_stacks+0x14c/0x17c)
> [   25.609573] [<c0cbbdb4>] (rcu_dump_cpu_stacks) from [<c02a3adc>]
> (rcu_sched_clock_irq+0x708/0xa80)
> [   25.618562]  r10:2df0b000 r9:00000000 r8:c2203d00 r7:c20bbfc0
> r6:c230eec0 r5:effc6fc0
> [   25.626411]  r4:c2249d00
> [   25.628950] [<c02a33d4>] (rcu_sched_clock_irq) from [<c02b15e8>]
> (update_process_times+0xb0/0xdc)
> [   25.637852]  r10:c02c5bf4 r9:effc08c0 r8:effc0880 r7:00000005
> r6:00000000 r5:c2203d00
> [   25.645700]  r4:effbf580
> [   25.648239] [<c02b1538>] (update_process_times) from [<c02c5878>]
> (tick_sched_handle+0x64/0x68)
> [   25.656967]  r7:00000005 r6:eef70001 r5:c2573bb8 r4:effc0be8
> [   25.662638] [<c02c5814>] (tick_sched_handle) from [<c02c5c50>]
> (tick_sched_timer+0x5c/0xb8)
> [   25.671015] [<c02c5bf4>] (tick_sched_timer) from [<c02b2544>]
> (__hrtimer_run_queues+0x1bc/0x35c)
> [   25.679829]  r7:c230f280 r6:c230f2a0 r5:effc0880 r4:effc0be8
> [   25.685501] [<c02b2388>] (__hrtimer_run_queues) from [<c02b3308>]
> (hrtimer_interrupt+0x130/0x2b8)
> [   25.694400]  r10:effc09d0 r9:effc0a00 r8:ffffffff r7:7fffffff
> r6:00000003 r5:20000193
> [   25.702247]  r4:effc0880
> [   25.704786] [<c02b31d8>] (hrtimer_interrupt) from [<c0a08884>]
> (arch_timer_handler_phys+0x38/0x40)
> [   25.713779]  r10:c0fd74f8 r9:c20ba51c r8:c2573bb8 r7:00000024
> r6:c251d940 r5:c22056fc
> [   25.721625]  r4:c2520c00
> [   25.724167] [<c0a0884c>] (arch_timer_handler_phys) from [<c028d760>]
> (handle_percpu_devid_irq+0x9c/0x214)
> [   25.733763] [<c028d6c4>] (handle_percpu_devid_irq) from [<c0287074>]
> (handle_domain_irq+0x6c/0x88)
> [   25.742754]  r7:0000001e r6:00000000 r5:00000000 r4:c20ba510
> [   25.748425] [<c0287008>] (handle_domain_irq) from [<c02012cc>]
> (gic_handle_irq+0x8c/0xa0)
> [   25.756632]  r7:f080200c r6:f0802000 r5:c22b8bd4 r4:c22056fc
> [   25.762304] [<c0201240>] (gic_handle_irq) from [<c0200b38>]
> (__irq_svc+0x58/0x74)
> [   25.769809] Exception stack(0xc2573bb8 to 0xc2573c00)
> [   25.774874] 3ba0:
>     c22c268c 00000000
> [   25.783072] 3bc0: 00000000 c25b8000 c43f2400 00000000 c22d083c
> c2204d08 c4530578 efff4160
> [   25.791269] 3be0: c0fd74f8 c2573c14 c2573c18 c2573c08 c07b0fe8
> c0ccd024 60000013 ffffffff
> [   25.799467]  r9:c2572000 r8:c4530578 r7:c2573bec r6:ffffffff
> r5:60000013 r4:c0ccd024
> [   25.807226] [<c0cccfe4>] (mutex_lock) from [<c07b0fe8>]
> (device_links_busy+0x20/0x90)
> [   25.815085] [<c07b0fc8>] (device_links_busy) from [<c07b6990>]
> (device_release_driver_internal+0x94/0x1c8)
> [   25.824767]  r5:00000000 r4:c43f2400
> [   25.828352] [<c07b68fc>] (device_release_driver_internal) from
> [<c07b6ae4>] (device_release_driver+0x20/0x24)
> [   25.838295]  r7:c2204d08 r6:c22cd174 r5:c43f2400 r4:c2e7f030
> [   25.843967] [<c07b6ac4>] (device_release_driver) from [<c07b4bac>]
> (bus_remove_device+0xf0/0x148)
> [   25.852866] [<c07b4abc>] (bus_remove_device) from [<c07af544>]
> (device_del+0x18c/0x3f8)
> [   25.860895]  r7:c2204d08 r6:c2573d20 r5:c43f2444 r4:c43f2400
> [   25.866566] [<c07af3b8>] (device_del) from [<c0899dec>]
> (phy_device_remove+0x1c/0x34)
> [   25.874422]  r10:c0fd74f8 r9:efff4160 r8:c2204d08 r7:c2cb1240
> r6:c2573d20 r5:efff43c0
> [   25.882268]  r4:c43f2400
> [   25.884810] [<c0899dd0>] (phy_device_remove) from [<c08a4014>]
> (bcm_sf2_sw_probe+0x640/0x900)
> [   25.893363]  r5:efff43c0 r4:c2cb1240
> [   25.896947] [<c08a39d4>] (bcm_sf2_sw_probe) from [<c07b8e44>]
> (platform_probe+0x6c/0xc8)
> [   25.905069]  r10:c2331000 r9:c1253854 r8:00000000 r7:c22d0aa8
> r6:c22d0aa8 r5:00000000
> [   25.912917]  r4:c25eb010
> [   25.915457] [<c07b8dd8>] (platform_probe) from [<c07b5ca8>]
> (really_probe+0xe8/0x45c)
> [   25.923314]  r7:c22d0aa8 r6:c231d168 r5:00000000 r4:c25eb010
> [   25.928985] [<c07b5bc0>] (really_probe) from [<c07b60cc>]
> (__driver_probe_device+0xb0/0x230)
> [   25.937451]  r7:c231d168 r6:c22d0aa8 r5:c22d0aa8 r4:c25eb010
> [   25.943123] [<c07b601c>] (__driver_probe_device) from [<c07b6290>]
> (driver_probe_device+0x44/0xd4)
> [   25.952111]  r9:c1253854 r8:00000000 r7:c25eb010 r6:c22d0aa8
> r5:c236c21c r4:c236c218
> [   25.959871] [<c07b624c>] (driver_probe_device) from [<c07b6830>]
> (__driver_attach+0xdc/0x188)
> [   25.968424]  r9:c1253854 r8:ffffe000 r7:c07b6754 r6:c22d0aa8
> r5:00000000 r4:c25eb010
> [   25.976183] [<c07b6754>] (__driver_attach) from [<c07b3a68>]
> (bus_for_each_dev+0x84/0xc4)
> [   25.984387]  r7:c07b6754 r6:c22d0aa8 r5:c2204d08 r4:c2e4d4b4
> [   25.990059] [<c07b39e4>] (bus_for_each_dev) from [<c07b5510>]
> (driver_attach+0x2c/0x30)
> [   25.998088]  r7:00000000 r6:c2780a00 r5:c22c2a68 r4:c22d0aa8
> [   26.003759] [<c07b54e4>] (driver_attach) from [<c07b4dd4>]
> (bus_add_driver+0x1d0/0x210)
> [   26.011787] [<c07b4c04>] (bus_add_driver) from [<c07b739c>]
> (driver_register+0x84/0x118)
> [   26.019904]  r7:00000000 r6:c122ae8c r5:c2204d08 r4:c22d0aa8
> [   26.025574] [<c07b7318>] (driver_register) from [<c07b8a90>]
> (__platform_driver_register+0x2c/0x34)
> [   26.034648]  r5:c2204d08 r4:c230e780
> [   26.038232] [<c07b8a64>] (__platform_driver_register) from
> [<c122aeb0>] (bcm_sf2_driver_init+0x24/0x28)
> [   26.047655] [<c122ae8c>] (bcm_sf2_driver_init) from [<c0202180>]
> (do_one_initcall+0x64/0x254)
> [   26.056206] [<c020211c>] (do_one_initcall) from [<c12014f4>]
> (kernel_init_freeable+0x1e0/0x238)
> [   26.064935]  r8:00000007 r7:c26f4900 r6:c1253834 r5:00000119 r4:c1289ab8
> [   26.071650] [<c1201314>] (kernel_init_freeable) from [<c0cc7918>]
> (kernel_init+0x20/0x138)
> [   26.079946]  r10:00000000 r9:00000000 r8:00000000 r7:00000000
> r6:00000000 r5:c0cc78f8
> [   26.087794]  r4:00000000
> [   26.090334] [<c0cc78f8>] (kernel_init) from [<c0200140>]
> (ret_from_fork+0x14/0x34)
> [   26.097927] Exception stack(0xc2573fb0 to 0xc2573ff8)
> [   26.102992] 3fa0:                                     00000000
> 00000000 00000000 00000000
> [   26.111188] 3fc0: 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000 00000000
> [   26.119385] 3fe0: 00000000 00000000 00000000 00000000 00000013 00000000
> [   26.126013]  r5:c0cc78f8 r4:00000000
> [   88.495125] rcu: INFO: rcu_sched self-detected stall on CPU
> [   88.500716] rcu:     2-....: (83367 ticks this GP)
> idle=3e2/1/0x40000002 softirq=292/292 fqs=20831
> [   88.509526]  (t=84018 jiffies g=-395 q=69)
> [   88.513637] NMI backtrace for cpu 2
> [   88.517136] CPU: 2 PID: 1 Comm: swapper/0 Not tainted
> 5.14.0-rc1-gcf4b94c8530d #100
> [   88.524812] Hardware name: Broadcom STB (Flattened Device Tree)
> [   88.530745] Backtrace:
> [   88.533203] [<c0cba30c>] (dump_backtrace) from [<c0cba5bc>]
> (show_stack+0x20/0x24)
> [   88.540803]  r7:c0e021cc r6:00000002 r5:c0f71914 r4:60000193
> [   88.546475] [<c0cba59c>] (show_stack) from [<c0cbf5f4>]
> (dump_stack_lvl+0x48/0x54)
> [   88.554069] [<c0cbf5ac>] (dump_stack_lvl) from [<c0cbf618>]
> (dump_stack+0x18/0x1c)
> [   88.561662]  r5:00000000 r4:00000002
> [   88.565246] [<c0cbf600>] (dump_stack) from [<c06bf89c>]
> (nmi_cpu_backtrace+0xc8/0xf4)
> [   88.573100] [<c06bf7d4>] (nmi_cpu_backtrace) from [<c06bf9f0>]
> (nmi_trigger_cpumask_backtrace+0x128/0x140)
> [   88.582782]  r5:c22056e0 r4:c020ff84
> [   88.586367] [<c06bf8c8>] (nmi_trigger_cpumask_backtrace) from
> [<c02111c0>] (arch_trigger_cpumask_backtrace+0x20/0x24)
> [   88.597007]  r7:00000002 r6:c230e186 r5:c2204e0c r4:c2249d00
> [   88.602679] [<c02111a0>] (arch_trigger_cpumask_backtrace) from
> [<c0cbbf00>] (rcu_dump_cpu_stacks+0x14c/0x17c)
> [   88.612622] [<c0cbbdb4>] (rcu_dump_cpu_stacks) from [<c02a3adc>]
> (rcu_sched_clock_irq+0x708/0xa80)
> [   88.621610]  r10:2df0b000 r9:00000000 r8:c2203d00 r7:c20bbfc0
> r6:c230eec0 r5:effc6fc0
> [   88.629456]  r4:c2249d00
> [   88.631995] [<c02a33d4>] (rcu_sched_clock_irq) from [<c02b15e8>]
> (update_process_times+0xb0/0xdc)
> [   88.640894]  r10:c02c5bf4 r9:effc08c0 r8:effc0880 r7:00000014
> r6:00000000 r5:c2203d00
> [   88.648742]  r4:effbf580
> [   88.651283] [<c02b1538>] (update_process_times) from [<c02c5878>]
> (tick_sched_handle+0x64/0x68)
> [   88.660009]  r7:00000014 r6:9a3c7c9b r5:c2573ba8 r4:effc0be8
> [   88.665680] [<c02c5814>] (tick_sched_handle) from [<c02c5c50>]
> (tick_sched_timer+0x5c/0xb8)
> [   88.674057] [<c02c5bf4>] (tick_sched_timer) from [<c02b2544>]
> (__hrtimer_run_queues+0x1bc/0x35c)
> [   88.682870]  r7:c230f280 r6:c230f2a0 r5:effc0880 r4:effc0be8
> [   88.688540] [<c02b2388>] (__hrtimer_run_queues) from [<c02b3308>]
> (hrtimer_interrupt+0x130/0x2b8)
> [   88.697439]  r10:effc09d0 r9:effc0a00 r8:ffffffff r7:7fffffff
> r6:00000003 r5:20000193
> [   88.705285]  r4:effc0880
> [   88.707826] [<c02b31d8>] (hrtimer_interrupt) from [<c0a08884>]
> (arch_timer_handler_phys+0x38/0x40)
> [   88.716815]  r10:c0fd74f8 r9:c20ba51c r8:c2573ba8 r7:00000024
> r6:c251d940 r5:c22056fc
> [   88.724662]  r4:c2520c00
> [   88.727201] [<c0a0884c>] (arch_timer_handler_phys) from [<c028d760>]
> (handle_percpu_devid_irq+0x9c/0x214)
> [   88.736797] [<c028d6c4>] (handle_percpu_devid_irq) from [<c0287074>]
> (handle_domain_irq+0x6c/0x88)
> [   88.745785]  r7:0000001e r6:00000000 r5:00000000 r4:c20ba510
> [   88.751455] [<c0287008>] (handle_domain_irq) from [<c02012cc>]
> (gic_handle_irq+0x8c/0xa0)
> [   88.759659]  r7:f080200c r6:f0802000 r5:c22b8bd4 r4:c22056fc
> [   88.765330] [<c0201240>] (gic_handle_irq) from [<c0200b38>]
> (__irq_svc+0x58/0x74)
> [   88.772835] Exception stack(0xc2573ba8 to 0xc2573bf0)
> [   88.777900] 3ba0:                   c22c268c 00000000 00000000
> c25b8000 c43f2460 00000004
> [   88.786097] 3bc0: c22c268c c43f2400 c4530578 efff4160 c0fd74f8
> c2573c04 c2573c08 c2573bf8
> [   88.794293] 3be0: c07b10d4 c0ccbe44 60000013 ffffffff
> [   88.799358]  r9:c2572000 r8:c4530578 r7:c2573bdc r6:ffffffff
> r5:60000013 r4:c0ccbe44
> [   88.807116] [<c0ccbe14>] (mutex_unlock) from [<c07b10d4>]
> (device_links_unbind_consumers+0x7c/0xe8)
> [   88.816187] [<c07b1058>] (device_links_unbind_consumers) from
> [<c07b6970>] (device_release_driver_internal+0x74/0x1c8)
> [   88.826914]  r9:efff4160 r8:c4530578 r7:c2204d08 r6:c22d083c
> r5:00000000 r4:c43f2400
> [   88.834672] [<c07b68fc>] (device_release_driver_internal) from
> [<c07b6ae4>] (device_release_driver+0x20/0x24)
> [   88.844617]  r7:c2204d08 r6:c22cd174 r5:c43f2400 r4:c2e7f030
> [   88.850287] [<c07b6ac4>] (device_release_driver) from [<c07b4bac>]
> (bus_remove_device+0xf0/0x148)
> [   88.859186] [<c07b4abc>] (bus_remove_device) from [<c07af544>]
> (device_del+0x18c/0x3f8)
> [   88.867214]  r7:c2204d08 r6:c2573d20 r5:c43f2444 r4:c43f2400
> [   88.872884] [<c07af3b8>] (device_del) from [<c0899dec>]
> (phy_device_remove+0x1c/0x34)
> [   88.880739]  r10:c0fd74f8 r9:efff4160 r8:c2204d08 r7:c2cb1240
> r6:c2573d20 r5:efff43c0
> [   88.888585]  r4:c43f2400
> [   88.891124] [<c0899dd0>] (phy_device_remove) from [<c08a4014>]
> (bcm_sf2_sw_probe+0x640/0x900)
> [   88.899677]  r5:efff43c0 r4:c2cb1240
> [   88.903261] [<c08a39d4>] (bcm_sf2_sw_probe) from [<c07b8e44>]
> (platform_probe+0x6c/0xc8)
> [   88.911381]  r10:c2331000 r9:c1253854 r8:00000000 r7:c22d0aa8
> r6:c22d0aa8 r5:00000000
> [   88.919228]  r4:c25eb010
> [   88.921767] [<c07b8dd8>] (platform_probe) from [<c07b5ca8>]
> (really_probe+0xe8/0x45c)
> [   88.929625]  r7:c22d0aa8 r6:c231d168 r5:00000000 r4:c25eb010
> [   88.935297] [<c07b5bc0>] (really_probe) from [<c07b60cc>]
> (__driver_probe_device+0xb0/0x230)
> [   88.943761]  r7:c231d168 r6:c22d0aa8 r5:c22d0aa8 r4:c25eb010
> [   88.949431] [<c07b601c>] (__driver_probe_device) from [<c07b6290>]
> (driver_probe_device+0x44/0xd4)
> [   88.958419]  r9:c1253854 r8:00000000 r7:c25eb010 r6:c22d0aa8
> r5:c236c21c r4:c236c218
> [   88.966177] [<c07b624c>] (driver_probe_device) from [<c07b6830>]
> (__driver_attach+0xdc/0x188)
> [   88.974730]  r9:c1253854 r8:ffffe000 r7:c07b6754 r6:c22d0aa8
> r5:00000000 r4:c25eb010
> [   88.982489] [<c07b6754>] (__driver_attach) from [<c07b3a68>]
> (bus_for_each_dev+0x84/0xc4)
> [   88.990694]  r7:c07b6754 r6:c22d0aa8 r5:c2204d08 r4:c2e4d4b4
> [   88.996365] [<c07b39e4>] (bus_for_each_dev) from [<c07b5510>]
> (driver_attach+0x2c/0x30)
> [   89.004394]  r7:00000000 r6:c2780a00 r5:c22c2a68 r4:c22d0aa8
> [   89.010065] [<c07b54e4>] (driver_attach) from [<c07b4dd4>]
> (bus_add_driver+0x1d0/0x210)
> [   89.018093] [<c07b4c04>] (bus_add_driver) from [<c07b739c>]
> (driver_register+0x84/0x118)
> [   89.026209]  r7:00000000 r6:c122ae8c r5:c2204d08 r4:c22d0aa8
> [   89.031880] [<c07b7318>] (driver_register) from [<c07b8a90>]
> (__platform_driver_register+0x2c/0x34)
> [   89.040954]  r5:c2204d08 r4:c230e780
> [   89.044538] [<c07b8a64>] (__platform_driver_register) from
> [<c122aeb0>] (bcm_sf2_driver_init+0x24/0x28)
> [   89.053959] [<c122ae8c>] (bcm_sf2_driver_init) from [<c0202180>]
> (do_one_initcall+0x64/0x254)
> [   89.062509] [<c020211c>] (do_one_initcall) from [<c12014f4>]
> (kernel_init_freeable+0x1e0/0x238)
> [   89.071237]  r8:00000007 r7:c26f4900 r6:c1253834 r5:00000119 r4:c1289ab8
> [   89.077951] [<c1201314>] (kernel_init_freeable) from [<c0cc7918>]
> (kernel_init+0x20/0x138)
> [   89.086246]  r10:00000000 r9:00000000 r8:00000000 r7:00000000
> r6:00000000 r5:c0cc78f8
> [   89.094093]  r4:00000000
> [   89.096633] [<c0cc78f8>] (kernel_init) from [<c0200140>]
> (ret_from_fork+0x14/0x34)
> [   89.104226] Exception stack(0xc2573fb0 to 0xc2573ff8)
> [   89.109291] 3fa0:                                     00000000
> 00000000 00000000 00000000
> [   89.117487] 3fc0: 00000000 00000000 00000000 00000000 00000000
> 00000000 00000000 00000000
> [   89.125682] 3fe0: 00000000 00000000 00000000 00000000 00000013 00000000
> [   89.132311]  r5:c0cc78f8 r4:00000000
>
> --
> Florian

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