[Bug 203864] ZFS deadlock between zfs send, zfs rename and ctrl-C

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=203864

Laurie Odgers <laurieodgers83 at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |laurieodgers83 at gmail.com

--- Comment #21 from Laurie Odgers <laurieodgers83 at gmail.com> ---
Hi All
We are seeing the same problem using NPM 6.2.2. This has been a problem for
some time, but seems to randomly pop up. We have run for months without this
error happening, however today it seems to happen repeatedly and relatively
reproducable. 
Procstat trace below.


# procstat -kk 12590
 PID    TID COMM             TDNAME           KSTACK                       
12590 101356 node             -                mi_switch+0xe1
sleepq_catch_signals+0xab sleepq_wait_sig+0xf _sleep+0x27d kern_kevent_fp+0x399
kern_kevent+0x9f sys_kevent+0x12a amd64_syscall+0x40f Xfast_syscall+0xfb 
12590 101358 node             -                mi_switch+0xe1
sleepq_catch_signals+0xab sleepq_wait_sig+0xf _sleep+0x27d umtxq_sleep+0x125
do_sem_wait+0x4db __umtx_op_sem_wait+0x73 amd64_syscall+0x40f
Xfast_syscall+0xfb 
12590 101359 node             V8 WorkerThread  mi_switch+0xe1
sleepq_catch_signals+0xab sleepq_wait_sig+0xf _sleep+0x27d umtxq_sleep+0x125
do_sem_wait+0x4db __umtx_op_sem_wait+0x73 amd64_syscall+0x40f
Xfast_syscall+0xfb 
12590 101360 node             V8 WorkerThread  mi_switch+0xe1
sleepq_catch_signals+0xab sleepq_wait_sig+0xf _sleep+0x27d umtxq_sleep+0x125
do_sem_wait+0x4db __umtx_op_sem_wait+0x73 amd64_syscall+0x40f
Xfast_syscall+0xfb 
12590 101361 node             V8 WorkerThread  mi_switch+0xe1
sleepq_catch_signals+0xab sleepq_wait_sig+0xf _sleep+0x27d umtxq_sleep+0x125
do_sem_wait+0x4db __umtx_op_sem_wait+0x73 amd64_syscall+0x40f
Xfast_syscall+0xfb 
12590 101362 node             V8 WorkerThread  mi_switch+0xe1
sleepq_catch_signals+0xab sleepq_wait_sig+0xf _sleep+0x27d umtxq_sleep+0x125
do_sem_wait+0x4db __umtx_op_sem_wait+0x73 amd64_syscall+0x40f
Xfast_syscall+0xfb 
12590 101363 node             -                mi_switch+0xe1 sleepq_wait+0x3a
sleeplk+0x15d __lockmgr_args+0x91a vop_stdlock+0x3c VOP_LOCK1_APV+0xab
_vn_lock+0x43 vget+0x73 cache_lookup+0x5d5 vfs_cache_lookup+0xac
VOP_LOOKUP_APV+0xa1 lookup+0x5a1 namei+0x4d4 kern_renameat+0x1b7
amd64_syscall+0x40f Xfast_syscall+0xfb 
12590 101364 node             -                mi_switch+0xe1 sleepq_wait+0x3a
sleeplk+0x15d __lockmgr_args+0xca0 vop_stdlock+0x3c VOP_LOCK1_APV+0xab
_vn_lock+0x43 vputx+0x21f

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