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Bug #13287

panic: Deadlock: cycle in blocking chain

Added by Toomas Soome 23 days ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
zfs - Zettabyte File System
Start date:
Due date:
% Done:

0%

Estimated time:
Difficulty:
Medium
Tags:
Gerrit CR:

Description

After resetting system from hung zfs-test run (testpool with zvols, testpool1 created on top of zvols and status is suspended) the kernel did panic:

panic[cpu1]/thread=fffffe0657650040:
Deadlock: cycle in blocking chain

fffffe0008644de0 genunix:turnstile_block+76b ()
fffffe0008644e50 unix:mutex_vector_enter+358 ()
fffffe0008644ed0 dev:devzvol_handle_ioctl+43 ()
fffffe0008644f30 dev:devzvol_objset_check+147 ()
fffffe0008644fc0 dev:devzvol_lookup+fd ()
fffffe0008645070 genunix:fop_lookup+a8 ()
fffffe00086452b0 genunix:lookuppnvp+294 ()
fffffe0008645350 genunix:lookuppnatcred+134 ()
fffffe0008645450 genunix:lookupnameatcred+d5 ()
fffffe00086454a0 genunix:lookupnameat+29 ()
fffffe0008645510 genunix:ldi_vp_from_name+117 ()
fffffe0008645590 genunix:ldi_open_by_name+5d ()
fffffe0008645660 zfs:vdev_disk_open+2e9 ()
fffffe00086456f0 zfs:vdev_open+b5 ()
fffffe0008645740 zfs:vdev_open_children+60 ()
fffffe00086457b0 zfs:vdev_root_open+54 ()
fffffe0008645840 zfs:vdev_open+b5 ()
fffffe0008645870 zfs:spa_ld_open_vdevs+60 ()
fffffe00086458a0 zfs:spa_ld_mos_init+58 ()
fffffe00086458f0 zfs:spa_ld_mos_with_trusted_config+2e ()
fffffe0008645960 zfs:spa_load_impl+6e ()
fffffe00086459c0 zfs:spa_load+5d ()
fffffe0008645a40 zfs:spa_load_best+6c ()
fffffe0008645af0 zfs:spa_open_common+118 ()
fffffe0008645b70 zfs:spa_get_stats+61 ()
fffffe0008645bc0 zfs:zfs_ioc_pool_stats+3d ()
fffffe0008645c80 zfs:zfsdev_ioctl+1fd ()
fffffe0008645cc0 genunix:cdev_ioctl+2b ()
fffffe0008645d10 specfs:spec_ioctl+45 ()
fffffe0008645da0 genunix:fop_ioctl+5b ()
fffffe0008645ec0 genunix:ioctl+153 ()
fffffe0008645f10 unix:brand_sys_sysenter+1d2 ()

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