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Bug #11039

Updated by Gordon Ross 4 months ago

Customer crash dump with MANY threads stuck in door calls to idmap, e.g.
<pre>

ffffd001ef7efc40 SLEEP MUTEX 134
swtch+0x141
turnstile_block+0x21a
mutex_vector_enter+0x3a3
zfs_zaccess_aces_check+0x62
zfs_zaccess_common+0xd8
zfs_zaccess+0xeb
zfs_lookup+0x354
fop_lookup+0xa2
lookuppnvp+0x230
smb_pathname_lookup+0xc7
smb_pathname+0x24f
smb_pathname_reduce+0x4ca
smb_open_subr+0x1bf
smb_common_open+0x59
smb2_create+0x422
smb2sr_work+0x352
smb2_tq_work+0x73
taskq_d_thread+0xb7
thread_start+8

ffffd001f1f70c40 SLEEP MUTEX 130
swtch+0x141
turnstile_block+0x21a
mutex_vector_enter+0x3a3
zfs_zaccess_aces_check+0x62
zfs_zaccess_common+0xd8
zfs_zaccess+0xeb
zfs_lookup+0x354
vhead_lookup+0x100
fop_lookup+0xa2
lookuppnvp+0x230
smb_pathname_lookup+0xc7
smb_pathname+0x24f
smb_pathname_reduce+0x4ca
smb_open_subr+0x1bf
smb_common_open+0x59
smb2_create+0x422
smb2sr_work+0x352
smb2_tq_work+0x73
taskq_d_thread+0xb7
thread_start+8
</pre>

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