syzkaller login: [ 185.000122][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 185.050670][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 185.157023][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 185.205541][ T2894] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:9223' (ECDSA) to the list of known hosts. 1970/01/01 00:03:32 fuzzer started 1970/01/01 00:03:41 dialing manager at localhost:33369 1970/01/01 00:03:44 syscalls: 2779 1970/01/01 00:03:44 code coverage: enabled 1970/01/01 00:03:44 comparison tracing: enabled 1970/01/01 00:03:44 extra coverage: enabled 1970/01/01 00:03:44 setuid sandbox: enabled 1970/01/01 00:03:44 namespace sandbox: enabled 1970/01/01 00:03:44 Android sandbox: /sys/fs/selinux/policy does not exist 1970/01/01 00:03:44 fault injection: enabled 1970/01/01 00:03:44 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 1970/01/01 00:03:44 net packet injection: enabled 1970/01/01 00:03:44 net device setup: enabled 1970/01/01 00:03:44 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 1970/01/01 00:03:44 devlink PCI setup: PCI device 0000:00:10.0 is not available 1970/01/01 00:03:44 USB emulation: enabled 1970/01/01 00:03:44 hci packet injection: /dev/vhci does not exist 1970/01/01 00:03:44 wifi device emulation: /sys/class/mac80211_hwsim/ does not exist 1970/01/01 00:03:44 802.15.4 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(0x3f9809ba00, 0x3f98320000) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:469 +0x54 main.(*Fuzzer).deserializeInput(0x3f9809ba00, 0x3f98120000, 0xef, 0xef, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:460 +0x118 main.(*Fuzzer).addCandidateInput(0x3f9809ba00, 0x3f98120000, 0xef, 0xef, 0x101) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:438 +0x44 main.(*Fuzzer).poll(0x3f9809ba00, 0x3f984a6a01, 0x0, 0x3f98010b00) /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: 12:18:38 Registers: info registers vcpu 0 pc ffffffe0003f83d4 mhartid 0000000000000000 mstatus 00000000000000a2 mip 0000000000000000 mie 00000000000002aa mideleg 0000000000000222 medeleg 000000000000b109 mtvec 0000000080000540 stvec ffffffe00000542c mepc ffffffe00000e9d4 sepc 0000000000081ac8 mcause 0000000000000009 scause 0000000000000008 mtval 0000000000000000 stval 0000000000000000 x0/zero 0000000000000000 x1/ra ffffffe0003f8aa2 x2/sp ffffffe00757fd40 x3/gp ffffffe004588c00 x4/tp ffffffe009aa4740 x5/t0 0000000000000200 x6/t1 0000000000000001 x7/t2 0000000000000002 x8/s0 ffffffe00757fd40 x9/s1 ffffffe00757fd50 x10/a0 ffffffe00757fd68 x11/a1 0000000000000007 x12/a2 1ffffffc00eaffac x13/a3 ffffffe0003f8b4c x14/a4 0000000000000000 x15/a5 0000000000000000 x16/a6 0000000000f00000 x17/a7 ffffffe0007f8f64 x18/s2 ffffffe00757fd50 x19/s3 0000000000000003 x20/s4 0000000000000000 x21/s5 0000000000000003 x22/s6 ffffffe00458c0d0 x23/s7 0000000000000000 x24/s8 0000000000000000 x25/s9 00000000002e0510 x26/s10 000000000073b100 x27/s11 ffffffe00af56280 x28/t3 b0d302b30aa9c100 x29/t4 0000003f982dc1c0 x30/t5 0000003f982dc1b9 x31/t6 0000000000081740 f0/ft0 0000000000000000 f1/ft1 4082169e1efb30e0 f2/ft2 411f71e000000000 f3/ft3 4134606800000000 f4/ft4 3ff799999999999a f5/ft5 3fde666666666666 f6/ft6 3fec1bc83b2d3cd6 f7/ft7 3fd9d12a0ff41346 f8/fs0 3fec46966a2ed240 f9/fs1 3fbf6f4846a2bdb8 f10/fa0 3fd2df7c747d7e84 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 ffffffe0023d8494 mhartid 0000000000000001 mstatus 00000000000001a2 mip 0000000000000000 mie 00000000000002aa mideleg 0000000000000222 medeleg 000000000000b109 mtvec 0000000080000540 stvec ffffffe00000542c mepc ffffffe00000e9d4 sepc ffffffe000005500 mcause 0000000000000009 scause 8000000000000009 mtval 0000000000000000 stval 0000000000000000 x0/zero 0000000000000000 x1/ra ffffffe002a96146 x2/sp ffffffe00aff7640 x3/gp ffffffe004588c00 x4/tp ffffffe009acaf80 x5/t0 ffffffe007dd2040 x6/t1 0000000000000001 x7/t2 ffffffffffffffff x8/s0 ffffffe00aff7740 x9/s1 0000000000000001 x10/a0 ffffffe00aff7808 x11/a1 0000000000000007 x12/a2 0000000000000100 x13/a3 ffffffe00099bf28 x14/a4 0000000000000003 x15/a5 ffffffe007dd2008 x16/a6 0000000000f00000 x17/a7 ffffffe00248e1ec x18/s2 ffffffe00679c000 x19/s3 0000000000029820 x20/s4 ffffffe00aff7808 x21/s5 ffffffe00aff7758 x22/s6 ffffffe00aff7808 x23/s7 ffffffe00679c000 x24/s8 ffffffe007dd20c8 x25/s9 ffffffe007dd20b4 x26/s10 0000000000000000 x27/s11 0000000000000000 x28/t3 b0d302b30aa9c100 x29/t4 ffffffc400fba405 x30/t5 ffffffc400fba408 x31/t6 ffffffe009e4d078 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