[Macchiato] [EXT] Network driver crash

[Stefan Chulski]

> -----Original Message-----
> From: Macchiato [mailto:macchiato-bounces at lists.einval.com] On Behalf Of
> Steve McIntyre
> Sent: Saturday, March 03, 2018 8:22 PM
> To: macchiato at lists.einval.com
> Subject: [EXT] [Macchiato] Network driver crash
> 
> External Email
> 
> ----------------------------------------------------------------------
> Hey folks,
> 
> So I've dug into this a bit more. It's always reproducible for me when I'm
> logged in via ssh and sit in a loop grabbing a large file using wget. For me it's
> always after a flood of warnings:
> 
> ...
> [ 1107.762610] mvpp2 f4000000.ethernet eth2: wrong cpu on the end of Tx
> processing
> [ 1107.962695] mvpp2 f4000000.ethernet eth2: wrong cpu on the end of Tx
> processing
> [ 1108.162688] mvpp2 f4000000.ethernet eth2: wrong cpu on the end of Tx
> processing
> [ 1108.362726] mvpp2 f4000000.ethernet eth2: wrong cpu on the end of Tx
> processing
> [ 1108.562789] mvpp2 f4000000.ethernet eth2: wrong cpu on the end of Tx
> processing
> [ 1108.572577] mvpp2 f4000000.ethernet eth2: wrong cpu on the end of Tx
> processing
> [ 1108.579949] Unable to handle kernel paging request at virtual address
> e0000010f
> [ 1108.587296] Mem abort info:
> [ 1108.590102]   ESR = 0x96000004
> [ 1108.593177]   Exception class = DABT (current EL), IL = 32 bits
> [ 1108.599121]   SET = 0, FnV = 0
> [ 1108.602191]   EA = 0, S1PTW = 0
> [ 1108.605348] Data abort info:
> [ 1108.608245]   ISV = 0, ISS = 0x00000004
> [ 1108.612099]   CM = 0, WnR = 0
> [ 1108.615087] user pgtable: 4k pages, 48-bit VAs, pgdp = 000000004167bcd2
> [ 1108.621729] [0000000e0000010f] pgd=0000000000000000
> [ 1108.626640] Internal error: Oops: 96000004 [#1] SMP
> [ 1108.631539] Modules linked in: nls_ascii(E) nls_cp437(E) vfat(E) fat(E)
> mcs7830(E) usbnet(E) mii(E))
> [ 1108.690168] CPU: 3 PID: 0 Comm: swapper/3 Tainted: G            E    4.16.0-
> rc3+ #17
> [ 1108.697944] Hardware name: Marvell Armada 8040 MacchiatoBin/Armada
> 8040 MacchiatoBin, BIOS EDK II N7
> [ 1108.707900] pstate: 40000005 (nZcv daif -PAN -UAO)
> [ 1108.712719] pc : consume_skb+0x1c/0xd0
> [ 1108.716485] lr : __dev_kfree_skb_any+0x58/0x68
> [ 1108.720946] sp : ffff00000801bc10
> [ 1108.724273] x29: ffff00000801bc10 x28: ffffa315e86a6900
> [ 1108.729611] x27: ffffa315ec2e0000 x26: 0000000000000001
> [ 1108.734948] x25: ffff18ba30ff8130 x24: ffff18ba30ff8130
> [ 1108.740285] x23: ffffa315e86a6950 x22: 0000000000000018
> [ 1108.745621] x21: 000000000000000b x20: 0000000000000001
> [ 1108.750957] x19: 0000000e0000002b x18: ffffffffffffffff
> [ 1108.756293] x17: 0000ffffab4efe18 x16: ffff18ba30e80190
> [ 1108.761619] x15: ffff18ba31669b88 x14: ffff18bab17c8bbf
> [ 1108.766955] x13: ffff18ba317c8bcd x12: 0000000000000000
> [ 1108.772291] x11: 00000000000001fa x10: 0000000000000053
> [ 1108.777627] x9 : ffff18ba30d3bf18 x8 : 6f72702078542066
> [ 1108.782963] x7 : ffff18ba3135a010 x6 : 00000000bb810000
> [ 1108.788300] x5 : ffff18ba31800798 x4 : 0000000000000000
> [ 1108.793635] x3 : 0000000000000001 x2 : 0000000e0000002b
> [ 1108.798971] x1 : 0000000000000001 x0 : ffff18ba30e801e8
> [ 1108.804309] Process swapper/3 (pid: 0, stack limit = 0x00000000c1096792)
> [ 1108.811038] Call trace:
> [ 1108.813495]  consume_skb+0x1c/0xd0
> [ 1108.816911]  __dev_kfree_skb_any+0x58/0x68
> [ 1108.821038]  mvpp2_txq_bufs_free.isra.52+0x8c/0x118 [mvpp2]
> [ 1108.826642]  mvpp2_txq_done.isra.67+0xb8/0xf8 [mvpp2]
> 
> It's clearly in the TX code rather than the RX code. Looking at the driver,
> there's a set of per-cpu transmit queues and that warning about "wrong cpu"
> looks quite worrying.


Hi,

Could you please send me output of
cat /proc/interrupts
And cat irq affinity for each eth2  interrupt.

Thanks,
Stefan.