search for: vdev_disk_io_start

Hi All, I have corefile where we see NULL pointer de-reference PANIC as we have sent (deliberately) NULL pointer for return value. vdev_disk_io_start() ... ... error = ldi_ioctl(dvd->vd_lh, zio->io_cmd, (uintptr_t)&zio->io_dk_callback, FKIOCTL, kcred, NULL); ldi_ioctl() expects last parameter as an integer pointer ( int *rvalp). I see that in strdoictl()....

...b9a0 sd:sdstrategy+ec () Oct 10 17:24:04 zetta genunix: [ID 655072 kern.notice] ffffff0007f1b9d0 genunix:bdev_strategy+77 () Oct 10 17:24:04 zetta genunix: [ID 655072 kern.notice] ffffff0007f1ba00 genunix:ldi_strategy+54 () Oct 10 17:24:04 zetta genunix: [ID 655072 kern.notice] ffffff0007f1ba50 zfs:vdev_disk_io_start+219 () Oct 10 17:24:04 zetta genunix: [ID 655072 kern.notice] ffffff0007f1ba70 zfs:vdev_io_start+1d () Oct 10 17:24:04 zetta genunix: [ID 655072 kern.notice] ffffff0007f1bab0 zfs:zio_vdev_io_start+123 () Oct 10 17:24:04 zetta genunix: [ID 655072 kern.notice] ffffff0007f1bad0 zfs:zio_next_stage_asyn...

...d:sdstrategy+ec () Sep 13 14:13:22 cypress genunix: [ID 655072 kern.notice] ffffff000840d220 genunix:bdev_strategy+77 () Sep 13 14:13:22 cypress genunix: [ID 655072 kern.notice] ffffff000840d250 genunix:ldi_strategy+54 () Sep 13 14:13:22 cypress genunix: [ID 655072 kern.notice] ffffff000840d2a0 zfs:vdev_disk_io_start+219 () Sep 13 14:13:22 cypress genunix: [ID 655072 kern.notice] ffffff000840d2c0 zfs:vdev_io_start+1d () Sep 13 14:13:22 cypress genunix: [ID 655072 kern.notice] ffffff000840d300 zfs:zio_vdev_io_start+123 () Sep 13 14:13:22 cypress genunix: [ID 655072 kern.notice] ffffff000840d320 zfs:zio_next_stag...

This may not be a ZFS issue, so please bear with me! I have 4 internal drives that I have striped/mirrored with ZFS and have an application server which is reading/writing to hundreds of thousands of files on it, thousands of files @ a time. If 1 client uses the app server, the transaction (reading/writing to ~80 files) takes about 200 ms. If I have about 80 clients attempting it @ once, it can