netdev - Re: [PATCH net] dsa: mv88e6xxx: Ensure all pending interrupts are handled prior to exit

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Message-ID: <28a49ac9-69e7-c222-b8ae-99853c4f7b24@bell.net>
Date:   Tue, 12 Feb 2019 15:09:30 -0500
From:   John David Anglin <dave.anglin@...l.net>
To:     Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>
Cc:     Russell King <linux@....linux.org.uk>,
        Vivien Didelot <vivien.didelot@...oirfairelinux.com>,
        Florian Fainelli <f.fainelli@...il.com>, netdev@...r.kernel.org
Subject: Re: [PATCH net] dsa: mv88e6xxx: Ensure all pending interrupts are
 handled prior to exit

On 2019-02-12 7:56 a.m., Andrew Lunn wrote:
> It is a little bit old, 5.0-rc1 net-next. I should rebase and
> retest. I'm testing on a ZII board which is not fully in mainline So i
> need some patches.
I attempted to test 5.0.0-rc5 on espressobin but it dies on boot:
Starting kernel ...

[    0.000000] Booting Linux on physical CPU 0x0000000000 [0x410fd034]
[    0.000000] Linux version 5.0.0-rc5+ (root@...ressobin) (gcc version 6.3.0 20170516 (Debian 6.3.0-18+deb9u1)) #1 SMP PREEMPT Tue Feb 12
10:02:30 EST 2019
[    0.000000] Machine model: Globalscale Marvell ESPRESSOBin Board
[    0.000000] earlycon: ar3700_uart0 at MMIO 0x00000000d0012000 (options '')
[    0.000000] printk: bootconsole [ar3700_uart0] enabled
[    3.218865] Internal error: Oops: 96000005 [#1] PREEMPT SMP
[    3.224521] Modules linked in:
[    3.227661] CPU: 1 PID: 1 Comm: swapper/0 Not tainted 5.0.0-rc5+ #1
[    3.234107] Hardware name: Globalscale Marvell ESPRESSOBin Board (DT)
[    3.240740] pstate: 20000005 (nzCv daif -PAN -UAO)
[    3.245676] pc : dma_direct_map_page+0x48/0x1d8
[    3.250331] lr : mv_xor_channel_add+0x3b0/0xb28
[    3.254984] sp : ffffff8010033a60
[    3.258389] x29: ffffff8010033a60 x28: ffffffc03bf70480
[    3.263854] x27: ffffff8010e97068 x26: 0000000000000000
[    3.269320] x25: 0000000000000029 x24: 0000000000000083
[    3.274785] x23: 0000000000000000 x22: 0000000000000002
[    3.280251] x21: 0000000000000080 x20: ffffff8010ecd000
[    3.285716] x19: 0000000000000000 x18: ffffffffffffffff
[    3.291182] x17: 000000000000000c x16: 000000000000000a
[    3.296648] x15: ffffff8010ecd6c8 x14: ffffffc03bf46783
[    3.302113] x13: ffffffc03bf46782 x12: 0000000000000038
[    3.307579] x11: 0000000000001fff x10: 0000000000000001
[    3.313044] x9 : 0000000000000000 x8 : ffffff8010dbe000
[    3.318510] x7 : ffffff8010fbe000 x6 : ffffffbf00000000
[    3.323976] x5 : 0000000000000000 x4 : 0000000000000002
[    3.329441] x3 : 0000000000000002 x2 : 00000000000006ac
[    3.334907] x1 : ffffffbf00efdc00 x0 : 0000000000000000
[    3.340373] Process swapper/0 (pid: 1, stack limit = 0x(____ptrval____))
[    3.347272] Call trace:
[    3.349784]  dma_direct_map_page+0x48/0x1d8
[    3.354084]  mv_xor_channel_add+0x3b0/0xb28
[    3.358384]  mv_xor_probe+0x20c/0x4b8
[    3.362150]  platform_drv_probe+0x50/0xb0
[    3.366269]  really_probe+0x1fc/0x2c0
[    3.370032]  driver_probe_device+0x58/0x100
[    3.374332]  __driver_attach+0xd8/0xe0
[    3.378188]  bus_for_each_dev+0x68/0xc8
[    3.382129]  driver_attach+0x20/0x28
[    3.385803]  bus_add_driver+0x108/0x228
[    3.389744]  driver_register+0x60/0x110
[    3.393687]  __platform_driver_register+0x44/0x50
[    3.398529]  mv_xor_driver_init+0x18/0x20
[    3.402648]  do_one_initcall+0x58/0x170
[    3.406591]  kernel_init_freeable+0x190/0x234
[    3.411072]  kernel_init+0x10/0x108
[    3.414653]  ret_from_fork+0x10/0x1c
[    3.418329] Code: 2a0403f6 934cfc00 aa0503f7 7100047f (f9412663)
[    3.424610] ---[ end trace f7751570455a07a0 ]---
[    3.429423] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b
[    3.437232] SMP: stopping secondary CPUs
[    3.441265] Kernel Offset: disabled
[    3.444849] CPU features: 0x002,2000200c
[    3.448878] Memory Limit: none
[    3.452018] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000b ]---

Dave

-- 
John David Anglin  dave.anglin@...l.net