Re: BUG: workqueue lockup

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Hi Andreas,

that's correct - the driver loops forever, retrying unsuccessful
selection attempts.

Finn had submitted a patch to ARAnyM to rectify that. I have prepared
another patch to the kernel (using presence of the natfeatures driver
to detect we're running on ARAnyM, then skipping all platform device
setup) but haven't submitted that yet.

Cheers,

  Michael


On Mon, Mar 21, 2016 at 4:41 AM, Andreas Schwab <schwab@xxxxxxxxxxxxxx> wrote:
I'm getting this hangup with 4.5 in aranym:

[    2.060000] scsi host0: Atari native SCSI, io_port 0x0, n_io_port 0, base 0x0, irq 15, can_queue 8, cmd_per_lun 1, sg_tablesize 0, this_id 7, flags { }, options { REAL_DMA SUPPORT_TAGS }
[    2.110000] blk_queue_max_segments: set to minimum 1
[   55.130000] random: nonblocking pool is initialized
[   60.240000] BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=0 stuck for 58s!
[   60.270000] BUG: workqueue lockup - pool cpus=0 node=0 flags=0x0 nice=-20 stuck for 52s!
[   60.300000] Showing busy workqueues and worker pools:
[   60.310000] workqueue events: flags=0x0
[   60.340000]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256
[   60.340000]     pending: cache_reap, do_cache_clean
[   60.380000] workqueue events_power_efficient: flags=0x80
[   60.410000]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=2/256
[   60.410000]     pending: fb_flashcursor, neigh_periodic_work
[   60.450000] workqueue kblockd: flags=0x18
[   60.470000]   pwq 1: cpus=0 node=0 flags=0x0 nice=-20 active=1/256
[   60.470000]     pending: blk_mq_timeout_work
[   60.500000] workqueue ncr5380_0: flags=0xa
[   60.530000]   pwq 2: cpus=0 node=0 flags=0x4 nice=0 active=1/1
[   60.530000]     in-flight: 6:NCR5380_main
[   60.560000] pool 2: cpus=0 node=0 flags=0x4 nice=0 hung=58s workers=2 idle: 57

I assume that this has something to do with the ncr5380 updates.

Andreas.

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