Mounting local filesystems:. fatal kernel trap: exception = 0x400 (instruction storage interrupt) virtual address = 0x3c4c0044 esr = 0x0 srr0 = 0x3c4c0044 (0x3ff800003c4c0044) srr1 = 0x80029000 current msr = 0x80029000 lr = 0xc008000000764e14 (0x764e14) frame = 0xc00800009d938a00 curthread = 0xc00800009e8e1000 pid = 74, comm = sh panic: instruction storage interrupt trap cpuid = 0 time = 1591388719 KDB: stack backtrace: 0xc00800009d938620: at kdb_backtrace+0x60 0xc00800009d938730: at vpanic+0x1e4 0xc00800009d9387e0: at panic+0x44 0xc00800009d938810: at trap+0xfa8 0xc00800009d938940: at powerpc_interrupt+0x1a0 0xc00800009d9389d0: kernel ISI trap by 0x3c4c0044: srr1=0x80029000 r1=0xc00800009d938c80 cr=0x4842f8db xer=0 ctr=0x3 r2=0xc008000000bb9000 frame=0xc00800009d938a00 0xc00800009d938c80: at uiomove_faultflag+0x174 0xc00800009d938d20: at vn_io_fault_uiomove+0x50 0xc00800009d938de0: at ncl_bioread+0x9f4 0xc00800009d938fc0: at nfs_read+0x44 0xc00800009d938ff0: at vop_sigdefer+0x60 0xc00800009d939070: at nfs_vnodeops_bypass+0x28 0xc00800009d9390a0: at VOP_READ_APV+0x70 0xc00800009d939120: at vn_read+0x220 0xc00800009d9391f0: at vn_io_fault_doio+0x78 0xc00800009d9392a0: at vn_io_fault1+0x1bc 0xc00800009d939460: at vn_io_fault+0x250 0xc00800009d939540: at kern_readv+0xc0 0xc00800009d9395b0: at sys_read+0x98 0xc00800009d939620: at trap+0x824 0xc00800009d939750: at powerpc_interrupt+0x1a0 0xc00800009d9397e0: user SC trap by 0x8103779c0: srr1=0x8002f000 r1=0xfffffbfffd350 cr=0x42200a82 xer=0x20000000 ctr=0x8103779b0 r2=0x8103a1070 frame=0xc00800009d939810 KDB: enter: panic [ thread pid 74 tid 100084 ] Stopped at kdb_enter+0x78: ori r0, r0, 0x0 db>