syzkaller login: [ 195.164255][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 195.219833][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 195.309966][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 195.335275][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:25555' (ECDSA) to the list of known hosts. 1970/01/01 00:03:48 fuzzer started 1970/01/01 00:03:56 dialing manager at localhost:33369 1970/01/01 00:03:59 syscalls: 2779 1970/01/01 00:03:59 code coverage: enabled 1970/01/01 00:03:59 comparison tracing: enabled 1970/01/01 00:03:59 extra coverage: enabled 1970/01/01 00:03:59 setuid sandbox: enabled 1970/01/01 00:03:59 namespace sandbox: enabled 1970/01/01 00:03:59 Android sandbox: /sys/fs/selinux/policy does not exist 1970/01/01 00:03:59 fault injection: enabled 1970/01/01 00:03:59 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 1970/01/01 00:03:59 net packet injection: enabled 1970/01/01 00:03:59 net device setup: enabled 1970/01/01 00:03:59 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 1970/01/01 00:03:59 devlink PCI setup: PCI device 0000:00:10.0 is not available 1970/01/01 00:03:59 USB emulation: enabled 1970/01/01 00:03:59 hci packet injection: /dev/vhci does not exist 1970/01/01 00:03:59 wifi device emulation: /sys/class/mac80211_hwsim/ does not exist 1970/01/01 00:03:59 802.15.4 emulation: /sys/bus/platform/devices/mac802154_hwsim does not exist panic: runtime error: invalid memory address or nil pointer dereference [signal SIGSEGV: segmentation violation code=0x1 addr=0x8 pc=0x2e0564] goroutine 1 [running]: github.com/google/syzkaller/prog.(*ChoiceTable).Enabled(...) /syzkaller/gopath/src/github.com/google/syzkaller/prog/prio.go:239 main.(*Fuzzer).checkDisabledCalls(0x3f98078340, 0x3f98326fc0) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:469 +0x54 main.(*Fuzzer).deserializeInput(0x3f98078340, 0x3f9815a090, 0x8d, 0x8d, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:460 +0x118 main.(*Fuzzer).addCandidateInput(0x3f98078340, 0x3f9815a090, 0x8d, 0x8d, 0x101) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:438 +0x44 main.(*Fuzzer).poll(0x3f98078340, 0x3f98216a01, 0x0, 0x3f98010630) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:409 +0x414 main.main() /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:273 +0x1008 VM DIAGNOSIS: 12:18:40 Registers: info registers vcpu 0 pc ffffffe0000c9c58 mhartid 0000000000000000 mstatus 00000000000001a0 mip 00000000000000a0 mie 000000000000020a mideleg 0000000000000222 medeleg 000000000000b109 mtvec 0000000080000540 stvec ffffffe00000542c mepc ffffffe002a9625a sepc ffffffe002a9625a mcause 8000000000000007 scause 8000000000000005 mtval 0000000000000000 stval 0000000000000000 x0/zero 0000000000000000 x1/ra ffffffe002a96146 x2/sp ffffffe00ea027e0 x3/gp ffffffe004588c00 x4/tp ffffffe008f6af80 x5/t0 0000000000046000 x6/t1 ffffffe0044556d0 x7/t2 77bfbda2295ddf16 x8/s0 ffffffe00ea027f0 x9/s1 0000000000001000 x10/a0 0000000000000120 x11/a1 ffffffffffffffff x12/a2 1ffffffc011ed5f1 x13/a3 ffffffe000100944 x14/a4 0000000000010103 x15/a5 0000000000000000 x16/a6 0000000000f00000 x17/a7 ffffffffffffffff x18/s2 ffffffe00458c228 x19/s3 ffffffe00432b2b8 x20/s4 ffffffe00420b540 x21/s5 ffffffe002e27840 x22/s6 ffffffffffffffff x23/s7 ffffffe00458c0d0 x24/s8 ffffffe0050495a8 x25/s9 ffffffe066d48a40 x26/s10 ffffffe066d48100 x27/s11 ffffffe00013c0e0 x28/t3 c4a941f8d1576800 x29/t4 ffffffc400a08107 x30/t5 ffffffc400a0810e x31/t6 ffffffe00e3b4078 f0/ft0 0000000000000000 f1/ft1 0000000000000000 f2/ft2 0000000000000000 f3/ft3 0000000000000000 f4/ft4 0000000000000000 f5/ft5 0000000000000000 f6/ft6 0000000000000000 f7/ft7 0000000000000000 f8/fs0 0000000000000000 f9/fs1 0000000000000000 f10/fa0 0000000000000000 f11/fa1 0000000000000000 f12/fa2 0000000000000000 f13/fa3 0000000000000000 f14/fa4 0000000000000000 f15/fa5 0000000000000000 f16/fa6 0000000000000000 f17/fa7 0000000000000000 f18/fs2 0000000000000000 f19/fs3 0000000000000000 f20/fs4 0000000000000000 f21/fs5 0000000000000000 f22/fs6 0000000000000000 f23/fs7 0000000000000000 f24/fs8 0000000000000000 f25/fs9 0000000000000000 f26/fs10 0000000000000000 f27/fs11 0000000000000000 f28/ft8 0000000000000000 f29/ft9 0000000000000000 f30/ft10 0000000000000000 f31/ft11 0000000000000000 info registers vcpu 1 pc ffffffe0000c9c58 mhartid 0000000000000001 mstatus 00000000000001a0 mip 00000000000000a0 mie 000000000000020a mideleg 0000000000000222 medeleg 000000000000b109 mtvec 0000000080000540 stvec ffffffe00000542c mepc ffffffe0003bdee0 sepc ffffffe0003bdee0 mcause 8000000000000007 scause 8000000000000005 mtval 0000000000000000 stval 0000000000000000 x0/zero 0000000000000000 x1/ra ffffffe002a96146 x2/sp ffffffe00f7f7460 x3/gp ffffffe004588c00 x4/tp ffffffe0071c0000 x5/t0 0000000000046000 x6/t1 0000000000000001 x7/t2 0000000000000028 x8/s0 ffffffe00f7f7470 x9/s1 0000000000001000 x10/a0 0000000000000120 x11/a1 ffffffffffffffff x12/a2 1ffffffc00e38001 x13/a3 ffffffe000100944 x14/a4 0000000000010002 x15/a5 0000000000000000 x16/a6 0000000000f00000 x17/a7 ffffffe0000a2f6a x18/s2 ffffffe00458c228 x19/s3 ffffffe00432b2b8 x20/s4 000000000000b71b x21/s5 ffffffe002e27840 x22/s6 ffffffffffffffff x23/s7 0000000001db062f x24/s8 ffffffe0050495a8 x25/s9 0000000000000000 x26/s10 00000000000092f4 x27/s11 000000000143e22f x28/t3 c4a941f8d1576800 x29/t4 ffffffc40166b00e x30/t5 ffffffc40166b00f x31/t6 0000000000040000 f0/ft0 0000000000000000 f1/ft1 407fb41222c64d6a f2/ft2 411f168000000000 f3/ft3 3f78df68cdaef0b2 f4/ft4 3ff799999999999a f5/ft5 3fde666666666666 f6/ft6 3fedbc5dde3d9b08 f7/ft7 3fdd12555614cfaa f8/fs0 3feaf731d0aa34a3 f9/fs1 3fb690d9b0574368 f10/fa0 3fd85154d1f414ac f11/fa1 0000000000000000 f12/fa2 0000000000000000 f13/fa3 0000000000000000 f14/fa4 0000000000000000 f15/fa5 0000000000000000 f16/fa6 0000000000000000 f17/fa7 0000000000000000 f18/fs2 0000000000000000 f19/fs3 0000000000000000 f20/fs4 0000000000000000 f21/fs5 0000000000000000 f22/fs6 0000000000000000 f23/fs7 0000000000000000 f24/fs8 0000000000000000 f25/fs9 0000000000000000 f26/fs10 0000000000000000 f27/fs11 0000000000000000 f28/ft8 0000000000000000 f29/ft9 0000000000000000 f30/ft10 0000000000000000 f31/ft11 0000000000000000