To be more precise, this test suite failed with
 #83 unpriv: spill/fill of different pointers ldx FAIL


A more detailed report:
 Running test_verifier bpf test..
 + echo 'Running test_verifier bpf test..'
 + bpf/test_verifier
 + tee /tmp/test_verifier_16808.log
 #0 add+sub+mul OK
 #1 unreachable OK
 #2 unreachable2 OK
 #3 out of range jump OK
 #4 out of range jump2 OK
 #5 test1 ld_imm64 OK
 #6 test2 ld_imm64 OK
 #7 test3 ld_imm64 OK
 #8 test4 ld_imm64 OK
 #9 test5 ld_imm64 OK
 #10 no bpf_exit OK
 #11 loop (back-edge) OK
 #12 loop2 (back-edge) OK
 #13 conditional loop OK
 #14 read uninitialized register OK
 #15 read invalid register OK
 #16 program doesn't init R0 before exit OK
 #17 program doesn't init R0 before exit in all branches OK
 #18 stack out of bounds OK
 #19 invalid call insn1 OK
 #20 invalid call insn2 OK
 #21 invalid function call OK
 #22 uninitialized stack1 OK
 #23 uninitialized stack2 OK
 #24 invalid argument register OK
 #25 non-invalid argument register OK
 #26 check valid spill/fill OK
 #27 check valid spill/fill, skb mark OK
 #28 check corrupted spill/fill OK
 #29 invalid src register in STX OK
 #30 invalid dst register in STX OK
 #31 invalid dst register in ST OK
 #32 invalid src register in LDX OK
 #33 invalid dst register in LDX OK
 #34 junk insn OK
 #35 junk insn2 OK
 #36 junk insn3 OK
 #37 junk insn4 OK
 #38 junk insn5 OK
 #39 misaligned read from stack OK
 #40 invalid map_fd for function call OK
 #41 don't check return value before access OK
 #42 access memory with incorrect alignment OK
 #43 sometimes access memory with incorrect alignment OK
 #44 jump test 1 OK
 #45 jump test 2 OK
 #46 jump test 3 OK
 #47 jump test 4 OK
 #48 jump test 5 OK
 #49 access skb fields ok OK
 #50 access skb fields bad1 OK
 #51 access skb fields bad2 OK
 #52 access skb fields bad3 OK
 #53 access skb fields bad4 OK
 #54 check skb->mark is not writeable by sockets OK
 #55 check skb->tc_index is not writeable by sockets OK
 #56 check non-u32 access to cb OK
 #57 check out of range skb->cb access OK
 #58 write skb fields from socket prog OK
 #59 write skb fields from tc_cls_act prog OK
 #60 PTR_TO_STACK store/load OK
 #61 PTR_TO_STACK store/load - bad alignment on off OK
 #62 PTR_TO_STACK store/load - bad alignment on reg OK
 #63 PTR_TO_STACK store/load - out of bounds low OK
 #64 PTR_TO_STACK store/load - out of bounds high OK
 ++ grep FAILED /tmp/test_verifier_16808.log
 ++ awk '{print $4}'
 + failed=1
 + rm -f /tmp/test_verifier_16808.log
 + echo -n 'test_verifier: '
 + '[' 1 -gt 0 '
 + echo FAILED
 + rc=1
 + '[' 0 -ne 0 '
 + TMP=/tmp/test_maps_16808.log
 + echo ''
 + echo 'Running test_maps bpf test..'
 + bpf/test_maps
 #65 unpriv: return pointer OK
 #66 unpriv: add const to pointer OK
 #67 unpriv: add pointer to pointer OK
 #68 unpriv: neg pointer OK
 #69 unpriv: cmp pointer with const OK
 #70 unpriv: cmp pointer with pointer OK
 #71 unpriv: check that printk is disallowed OK
 #72 unpriv: pass pointer to helper function OK
 #73 unpriv: indirectly pass pointer on stack to helper function OK
 #74 unpriv: mangle pointer on stack 1 OK
 #75 unpriv: mangle pointer on stack 2 OK
 #76 unpriv: read pointer from stack in small chunks OK
 #77 unpriv: write pointer into ctx OK
 #78 unpriv: spill/fill of ctx OK
 #79 unpriv: spill/fill of ctx 2 OK
 #80 unpriv: spill/fill of ctx 3 OK
 #81 unpriv: spill/fill of ctx 4 OK
 #82 unpriv: spill/fill of different pointers stx OK
 #83 unpriv: spill/fill of different pointers ldx FAIL
 Unexpected error message!
 0: (bf) r6 = r10
 1: (07) r6 += -8
 2: (15) if r1 == 0x0 goto pc+3
 R1=ctx R6=fp-8 R10=fp
 3: (bf) r2 = r10
 4: (07) r2 += -76
 5: (7b) *(u64 *)(r6 +0) = r2
 6: (55) if r1 != 0x0 goto pc+1
 R1=ctx,min_value=0,max_value=0 R2=fp-76 R6=fp-8 R10=fp fp-8=fp
 7: (7b) *(u64 *)(r6 +0) = r1
 8: (79) r1 = *(u64 *)(r6 +0)
 9: (79) r1 = *(u64 *)(r1 +68)
 misaligned access off 68 size 8
 #84 unpriv: write pointer into map elem value OK
 #85 unpriv: partial copy of pointer OK
 #86 unpriv: pass pointer to tail_call OK
 #87 unpriv: cmp map pointer with zero OK
 #88 unpriv: write into frame pointer OK
 #89 unpriv: spill/fill frame pointer OK
 #90 unpriv: cmp of frame pointer OK
 #91 unpriv: cmp of stack pointer OK
 #92 stack pointer arithmetic OK
 #93 raw_stack: no skb_load_bytes OK
 #94 raw_stack: skb_load_bytes, negative len OK
 #95 raw_stack: skb_load_bytes, negative len 2 OK
 #96 raw_stack: skb_load_bytes, zero len OK
 #97 raw_stack: skb_load_bytes, no init OK
 #98 raw_stack: skb_load_bytes, init OK
 #99 raw_stack: skb_load_bytes, spilled regs around bounds OK
 #100 raw_stack: skb_load_bytes, spilled regs corruption OK
 #101 raw_stack: skb_load_bytes, spilled regs corruption 2 OK
 #102 raw_stack: skb_load_bytes, spilled regs + data OK
 #103 raw_stack: skb_load_bytes, invalid access 1 OK
 #104 raw_stack: skb_load_bytes, invalid access 2 OK
 #105 raw_stack: skb_load_bytes, invalid access 3 OK
 #106 raw_stack: skb_load_bytes, invalid access 4 OK
 #107 raw_stack: skb_load_bytes, invalid access 5 OK
 #108 raw_stack: skb_load_bytes, invalid access 6 OK
 #109 raw_stack: skb_load_bytes, large access OK
 #110 direct packet access: test1 OK
 #111 direct packet access: test2 OK
 #112 direct packet access: test3 OK
 #113 direct packet access: test4 (write) OK
 #114 direct packet access: test5 (pkt_end >= reg, good access) OK
 #115 direct packet access: test6 (pkt_end >= reg, bad access) OK
 #116 direct packet access: test7 (pkt_end >= reg, both accesses) OK
 #117 direct packet access: test8 (double test, variant 1) OK
 #118 direct packet access: test9 (double test, variant 2) OK
 #119 direct packet access: test10 (write invalid) OK
 #120 helper access to packet: test1, valid packet_ptr range OK
 #121 helper access to packet: test2, unchecked packet_ptr OK
 #122 helper access to packet: test3, variable add OK
 #123 helper access to packet: test4, packet_ptr with bad range OK
 #124 helper access to packet: test5, packet_ptr with too short range OK
 #125 helper access to packet: test6, cls valid packet_ptr range OK
 #126 helper access to packet: test7, cls unchecked packet_ptr OK
 #127 helper access to packet: test8, cls variable add OK
 #128 helper access to packet: test9, cls packet_ptr with bad range OK
 #129 helper access to packet: test10, cls packet_ptr with too short range OK
 #130 helper access to packet: test11, cls unsuitable helper 1 OK
 #131 helper access to packet: test12, cls unsuitable helper 2 OK
 #132 helper access to packet: test13, cls helper ok OK
 #133 helper access to packet: test14, cls helper fail sub OK
 #134 helper access to packet: test15, cls helper fail range 1 OK
 #135 helper access to packet: test16, cls helper fail range 2 OK
 #136 helper access to packet: test17, cls helper fail range 3 OK
 #137 helper access to packet: test18, cls helper fail range zero OK
 #138 helper access to packet: test19, pkt end as input OK
 #139 helper access to packet: test20, wrong reg OK
 #140 valid map access into an array with a constant OK
 #141 valid map access into an array with a register OK
 #142 valid map access into an array with a variable OK
 #143 valid map access into an array with a signed variable OK
 #144 invalid map access into an array with a constant OK
 #145 invalid map access into an array with a register OK
 #146 invalid map access into an array with a variable OK
 #147 invalid map access into an array with no floor check OK
 #148 invalid map access into an array with a invalid max check OK
 #149 invalid map access into an array with a invalid max check OK
 #150 multiple registers share map_lookup_elem result OK
 #151 invalid memory access with multiple map_lookup_elem calls OK
 #152 valid indirect map_lookup_elem access with 2nd lookup in branch OK
 #153 multiple registers share map_lookup_elem bad reg type OK
 #154 invalid map access from else condition OK
 #155 constant register |= constant should keep constant type OK
 #156 constant register |= constant should not bypass stack boundary checks OK
 #157 constant register |= constant register should keep constant type OK
 #158 constant register |= constant register should not bypass stack boundary checks OK
 #159 invalid direct packet write for LWT_IN OK
 #160 invalid direct packet write for LWT_OUT OK
 #161 direct packet write for LWT_XMIT OK
 #162 direct packet read for LWT_IN OK
 #163 direct packet read for LWT_OUT OK
 #164 direct packet read for LWT_XMIT OK
 #165 overlapping checks for direct packet access OK
 #166 invalid access of tc_classid for LWT_IN OK
 #167 invalid access of tc_classid for LWT_OUT OK
 #168 invalid access of tc_classid for LWT_XMIT OK
 Summary: 168 PASSED, 1 FAILED
 test_verifier: FAILED