When running zfs test suite in bhyve, it usually panics with following message: panic: deadlres_td_sleep_q: possible deadlock detected for 0xfffff8006b642000, blocked for 180024 ticks VM image and core files (vmcore.1 is used in this bug report, vmcore.0 is previous run, also panicked in the same point): https://people.freebsd.org/~lwhsu/zfs-deadlock/ Some ddb outputs: https://gist.github.com/lwhsu/88bce6ffaa2ccc5e8da4fe186dbeb54f Also note that there might be another issue: chain 96: thread 100230 (pid 0, zio_null_intr) blocked on lockmgr (null)EXCL thread -559038242 (pid 268435455, pppppppppppppppppppppppppppppppppppppppppppppsecondarycache) ??? (0xdeadc0de)
Is this still reproducible? The job seems to be running to completion: https://ci.freebsd.org/job/FreeBSD-head-amd64-test_zfs/
I hit this bug on a bhyve with UFS filesystem on 13-current! thread 100377 (pid 36752, sh) blocked on lockmgr ufsEXCL thread 100078 (pid 22, syncer) blocked on lockmgr bufwaitEXCL It's still in KDB but I can only access the console via VNC so can't copy/paste text, dump it or make screenshots. Trace of the sh process that started this; sched_switch() mi_switch() sleepq_switch() sleepq_wait() sleeplk() lockmgr_slock_hard() __lockmgr_args() ffs_lock() VOP_LOCK1_APV() _vn_lock() vget() cache_lookup() vfs_cache_lookup() VOP_LOOKUP_APV() lookup() namei() vn_open_cred() kern_openat() amd64_syscall() - Need any more info?
Reproducible crash on my RockPro64 with 13-CURRENT/aarch64. There isn't any ZFS drives attached at this point. I thought it was the mmc/sd controller freaking out (it's only been bootable at all for a few weeks now and the clocks aren't much better on this board) but... who knows. root@generic:~ # zpool import ZFS NOTICE: Prefetch is disabled by default if less than 4GB of RAM is present; to enable, add "vfs.zfs.prefetch_disable=0" to /boot/loader.conf. ZFS filesystem version: 5 ZFS storage pool version: features support (5000) mmcsd0: Error indicated: 4 Failed rockchip_dwmmc0: Failed to update clk # At this point, a very long time passes with all IO on the system seemingly dead panic: deadlres_td_sleep_q: possible deadlock detected for 0xfffffd000280e560, blocked for 1802665 ticks cpuid = 3 time = 1574727302 KDB: stack backtrace: db_trace_self() at db_trace_self_wrapper+0x28 pc = 0xffff00000072a50c lr = 0xffff0000001066c8 sp = 0xffff00005f73c580 fp = 0xffff00005f73c790 db_trace_self_wrapper() at vpanic+0x18c pc = 0xffff0000001066c8 lr = 0xffff000000400eb8 sp = 0xffff00005f73c7a0 fp = 0xffff00005f73c850 vpanic() at panic+0x44 pc = 0xffff000000400eb8 lr = 0xffff000000400c68 sp = 0xffff00005f73c860 fp = 0xffff00005f73c8e0 panic() at deadlkres+0x314 pc = 0xffff000000400c68 lr = 0xffff00000039ce80 sp = 0xffff00005f73c8f0 fp = 0xffff00005f73c940 deadlkres() at fork_exit+0x7c pc = 0xffff00000039ce80 lr = 0xffff0000003c11bc sp = 0xffff00005f73c950 fp = 0xffff00005f73c980 fork_exit() at fork_trampoline+0x10 pc = 0xffff0000003c11bc lr = 0xffff0000007471a4 sp = 0xffff00005f73c990 fp = 0x0000000000000000 KDB: enter: panic [ thread pid 0 tid 100073 ] Stopped at 0 db>