db:0:kdb.enter.default>  bt
Tracing pid 8046 tid 100886 td 0xfffffe006ac69920
kmem_cache_alloc() at kmem_cache_alloc+0x4/frame 0xffffff8cca9eaf50
arc_buf_alloc() at arc_buf_alloc+0xb6/frame 0xffffff8cca9eaf80
arc_read() at arc_read+0x120/frame 0xffffff8cca9eb040
dbuf_read() at dbuf_read+0x687/frame 0xffffff8cca9eb100
dmu_spill_hold_by_dnode() at dmu_spill_hold_by_dnode+0xbf/frame 0xffffff8cca9eb140
dmu_spill_hold_existing() at dmu_spill_hold_existing+0x103/frame 0xffffff8cca9eb180
sa_get_spill() at sa_get_spill+0x3f/frame 0xffffff8cca9eb1a0
sa_attr_op() at sa_attr_op+0x6b/frame 0xffffff8cca9eb200
sa_lookup() at sa_lookup+0x5b/frame 0xffffff8cca9eb260
zfs_dirent_lock() at zfs_dirent_lock+0x4f6/frame 0xffffff8cca9eb310
zfs_get_xattrdir() at zfs_get_xattrdir+0x7a/frame 0xffffff8cca9eb460
zfs_lookup() at zfs_lookup+0x187/frame 0xffffff8cca9eb4f0
zfs_getextattr() at zfs_getextattr+0xf6/frame 0xffffff8cca9eb7f0
VOP_GETEXTATTR_APV() at VOP_GETEXTATTR_APV+0x78/frame 0xffffff8cca9eb820
extattr_get_vp() at extattr_get_vp+0x1a1/frame 0xffffff8cca9eb920
sys_extattr_get_file() at sys_extattr_get_file+0x132/frame 0xffffff8cca9ebb10
amd64_syscall() at amd64_syscall+0x5ea/frame 0xffffff8cca9ebc30
Xfast_syscall() at Xfast_syscall+0xf7/frame 0xffffff8cca9ebc30