0:mon> t [link register ] c0000000001a7f78 .pcpu_alloc+0x798/0xa04 [c0000000033e37f0] c0000000001a7f08 .pcpu_alloc+0x728/0xa04 (unreliable) [c0000000033e3920] c0000000001a8278 .__alloc_percpu+0x3c/0x58 [c0000000033e39b0] c0000000005d1ad0 .snmp_mib_init+0x64/0xb0 [c0000000033e3a40] c0000000005d1c00 .ipv4_mib_init_net+0xe4/0x1f8 [c0000000033e3b00] c00000000055b608 .setup_net+0x78/0x138 [c0000000033e3ba0] c00000000055be38 .copy_net_ns+0x9c/0x148 [c0000000033e3c30] c0000000000d06d8 .create_new_namespaces+0x120/0x1e4 [c0000000033e3ce0] c0000000000d09e0 .unshare_nsproxy_namespaces+0x7c/0xfc [c0000000033e3d80] c00000000009dd74 .SyS_unshare+0x148/0x33c [c0000000033e3e30] c0000000000085b4 syscall_exit+0x0/0x40 --- Exception: c01 (System Call) at 00000fff8b0ab978 SP (fffe633fe30) is in userspace 0:mon> e cpu 0x0: Vector: 501 (Hardware Interrupt) at [c0000000033e3570] pc: c00000000004bdc0: .memset+0x60/0xfc lr: c0000000001a7f78: .pcpu_alloc+0x798/0xa04 sp: c0000000033e37f0 msr: 8000000000009032 current = 0xc000000003270860 paca = 0xc0000000010c2600 pid = 3442, comm = two_children_ns 0:mon> r R00 = 0000000000000040 R07 = d00007fffff00000 R01 = c0000000033e37f0 R08 = 0000000000000000 R02 = c000000000fe7c78 R09 = c000000001700180 R03 = d00007fffff00000 R10 = c000000001095aa0 R04 = 0000000000000000 R11 = 00000000000003c0 R05 = 0000000000000000 R12 = 0000000048004428 R06 = d00007fffff00000 R13 = c0000000010c2600 pc = c00000000004bdc0 .memset+0x60/0xfc lr = c0000000001a7f78 .pcpu_alloc+0x798/0xa04 msr = 8000000000009032 cr = 44004420 ctr = 0000000000000040 xer = 0000000020000020 trap = 501 0:mon> di $.memset c00000000004bd60 7c0300d0 neg r0,r3 c00000000004bd64 5084442e rlwimi r4,r4,8,16,23 c00000000004bd68 70000007 andi. r0,r0,7 c00000000004bd6c 5084801e rlwimi r4,r4,16,0,15 c00000000004bd70 7c850040 cmplw cr1,r5,r0 c00000000004bd74 7884000e rldimi r4,r4,32,0 c00000000004bd78 7c101120 mtocrf 1,r0 c00000000004bd7c 7c661b78 mr r6,r3 c00000000004bd80 418400ac blt cr1,c00000000004be2c # .memset+0xcc/0xfc c00000000004bd84 41e2002c beq+ c00000000004bdb0 # .memset+0x50/0xfc c00000000004bd88 7ca02850 subf r5,r0,r5 c00000000004bd8c 409f000c bns cr7,c00000000004bd98 # .memset+0x38/0xfc c00000000004bd90 98860000 stb r4,0(r6) c00000000004bd94 38c60001 addi r6,r6,1 c00000000004bd98 409e000c bne cr7,c00000000004bda4 # .memset+0x44/0xfc c00000000004bd9c b0860000 sth r4,0(r6) 0:mon> c00000000004bda0 38c60002 addi r6,r6,2 c00000000004bda4 409d000c ble cr7,c00000000004bdb0 # .memset+0x50/0xfc c00000000004bda8 90860000 stw r4,0(r6) c00000000004bdac 38c60004 addi r6,r6,4 c00000000004bdb0 78a0d183 rldicl. r0,r5,58,6 c00000000004bdb4 78a506a0 clrldi r5,r5,58 c00000000004bdb8 7c0903a6 mtctr r0 c00000000004bdbc 4182002c beq c00000000004bde8 # .memset+0x88/0xfc c00000000004bdc0 f8860000 std r4,0(r6) c00000000004bdc4 f8860008 std r4,8(r6) c00000000004bdc8 f8860010 std r4,16(r6) c00000000004bdcc f8860018 std r4,24(r6) c00000000004bdd0 f8860020 std r4,32(r6) c00000000004bdd4 f8860028 std r4,40(r6) c00000000004bdd8 f8860030 std r4,48(r6) c00000000004bddc f8860038 std r4,56(r6) 0:mon> u SLB contents of cpu 0 00 c000000008000000 40004f7ca3000500 1T ESID= c00000 VSID= 4f7ca3 LLP:100 01 d000000008000000 4000eb71b0000510 1T ESID= d00000 VSID= eb71b0 LLP:110 20 f000000008000000 4000235bcc000500 1T ESID= f00000 VSID= 235bcc LLP:100 27 00000f0008000000 400014e596000d90 1T ESID= f VSID= 14e596 LLP:110 28 0000000018000000 00004be47e859d90 256M ESID= 1 VSID= 4be47e859 LLP:110 29 d000070008000000 400026a7a5000400 1T ESID= d00007 VSID= 26a7a5 LLP: 0 30 d000080008000000 4000e5f87e000400 1T ESID= d00008 VSID= e5f87e LLP: 0 0:mon> S msr = 8000000000001032 sprg0= 0000000000000000 pvr = 00000000003e0301 sprg1= c0000000010c2600 dec = 0000000058fe12dd sprg2= c0000000010c2600 sp = c00000000fffb8f0 sprg3= 0000000000000000 toc = c000000000fe7c78 dar = d00007fffff00000