db> bt 29473
Tracing pid 29473 tid 100946 td 0xc000000236702000
0xe0000000fdfab560: at intr_event_handle+0x100
0xe0000000fdfab5c0: at powerpc_dispatch_intr+0xe0
0xe0000000fdfab660: at powernv_mem_regions+0x1e6c
0xe0000000fdfab700: at powerpc_interrupt+0x134
0xe0000000fdfab750: kernel trap 0xea0 by pvo_tree_RB_INSERT+0x3c: srr1=0x9000000000009032
            r1=0xe0000000fdfaba00 cr=0x44222832 xer=0 ctr=0x3 r2=0xc000000003a1f000 frame=0xe0000000fdfab780
0xe0000000fdfaba00: at uma_align_cache+0xf4
0xe0000000fdfaba30: at moea64_enter+0xc30
0xe0000000fdfabab0: at moea64_enter+0x5c4
0xe0000000fdfabbe0: at moea64_enter_object+0x98
0xe0000000fdfabc40: at pmap_enter_object+0xac
0xe0000000fdfabca0: at vm_map_simplify_entry+0x764
0xe0000000fdfabd50: at vm_map_insert+0x4e4
0xe0000000fdfabe40: at vm_map_fixed+0x11c
0xe0000000fdfabeb0: at elf64_populate_note+0x3e14
0xe0000000fdfabf40: at elf64_populate_note+0x36c0
0xe0000000fdfac040: at elf64_populate_note+0x2c4c
0xe0000000fdfac1f0: at kern_execve+0x674
0xe0000000fdfac610: at sys_execve+0x7c
0xe0000000fdfac6b0: at trap+0xac0
0xe0000000fdfac790: at powerpc_interrupt+0x1a0
0xe0000000fdfac7e0: user SC trap by 0x145cd280: srr1=0x900000000200d032
            r1=0x3fffffffffffa220 cr=0x424802c2 xer=0x20040000 ctr=0 r2=0x14a88608 frame=0xe0000000fdfac810
db>