syzkaller login: [ 193.757717][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 193.784401][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 193.800451][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 193.818037][ T2895] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:15780' (ECDSA) to the list of known hosts. 1970/01/01 00:04:06 fuzzer started 1970/01/01 00:04:15 dialing manager at localhost:33369 1970/01/01 00:04:18 syscalls: 2779 1970/01/01 00:04:18 code coverage: enabled 1970/01/01 00:04:18 comparison tracing: enabled 1970/01/01 00:04:18 extra coverage: enabled 1970/01/01 00:04:18 setuid sandbox: enabled 1970/01/01 00:04:18 namespace sandbox: enabled 1970/01/01 00:04:19 Android sandbox: /sys/fs/selinux/policy does not exist 1970/01/01 00:04:19 fault injection: enabled 1970/01/01 00:04:19 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 1970/01/01 00:04:19 net packet injection: enabled 1970/01/01 00:04:19 net device setup: enabled 1970/01/01 00:04:19 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 1970/01/01 00:04:19 devlink PCI setup: PCI device 0000:00:10.0 is not available 1970/01/01 00:04:19 USB emulation: enabled 1970/01/01 00:04:19 hci packet injection: /dev/vhci does not exist 1970/01/01 00:04:19 wifi device emulation: /sys/class/mac80211_hwsim/ does not exist 1970/01/01 00:04:19 802.15.4 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(0x3fbc09a340, 0x3fbc32b1c0) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:469 +0x54 main.(*Fuzzer).deserializeInput(0x3fbc09a340, 0x3fbc458000, 0x91, 0x91, 0x0) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:460 +0x118 main.(*Fuzzer).addCandidateInput(0x3fbc09a340, 0x3fbc458000, 0x91, 0x91, 0x101) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:438 +0x44 main.(*Fuzzer).poll(0x3fbc09a340, 0x3fbc384001, 0x0, 0x3fbc0101d0) /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: 12:21:43 Registers: info registers vcpu 0 pc 000000000006bd64 mhartid 0000000000000000 mstatus 00000000000040a2 mip 0000000000000000 mie 00000000000002aa mideleg 0000000000000222 medeleg 000000000000b109 mtvec 0000000080000540 stvec ffffffe00000542c mepc ffffffe00000e9d4 sepc 0000000000073e3c mcause 0000000000000009 scause 8000000000000009 mtval 0000000000000000 stval 0000000000000000 x0/zero 0000000000000000 x1/ra 000000000006be1c x2/sp 0000003fbc3a7a28 x3/gp 00000000000000ef x4/tp 0000003fbc083080 x5/t0 00000000006db034 x6/t1 0000000000000000 x7/t2 00000000006db034 x8/s0 0016285400000000 x9/s1 0000000000165cda x10/a0 000000000000049c x11/a1 000000000000003e x12/a2 00000000006dc000 x13/a3 0000000000000000 x14/a4 00000000006db034 x15/a5 0000000000000000 x16/a6 ffffffffffffffff x17/a7 000000000015be50 x18/s2 0000000000000002 x19/s3 0000000000000000 x20/s4 0000000000000000 x21/s5 0000000000000001 x22/s6 ffffffff80000000 x23/s7 00000000002e0564 x24/s8 0000000000000000 x25/s9 00000000002e0510 x26/s10 000000000073b100 x27/s11 00000000000000f7 x28/t3 0000000000000000 x29/t4 0000003fbc436680 x30/t5 0000003fbc436679 x31/t6 0000000000011b20 f0/ft0 0000000000000000 f1/ft1 40832cfc611d8a9c f2/ft2 41209fc000000000 f3/ft3 4138b94c00000000 f4/ft4 3ff0000000000000 f5/ft5 4000000000000000 f6/ft6 3fece2f80e622f3f f7/ft7 3fdb5f89b65df818 f8/fs0 3ff0f3920959adfb f9/fs1 3fbcbe3d0e3e91d8 f10/fa0 3fd3c2968ccdee4c 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 ffffffe0003bdee0 mhartid 0000000000000001 mstatus 00000000000000a0 mip 0000000000000000 mie 00000000000002aa mideleg 0000000000000222 medeleg 000000000000b109 mtvec 0000000080000540 stvec ffffffe00000542c mepc ffffffe00000e9d4 sepc 0000003fe99b71b8 mcause 0000000000000009 scause 0000000000000008 mtval 0000000000000000 stval 0000000000000000 x0/zero 0000000000000000 x1/ra ffffffe0000d3134 x2/sp ffffffe00a98bce0 x3/gp ffffffe004588c00 x4/tp ffffffe009a197c0 x5/t0 0000003fffcc1438 x6/t1 0000000000000001 x7/t2 0000000000010000 x8/s0 ffffffe00a98be50 x9/s1 0000000000000008 x10/a0 ffffffe066d60840 x11/a1 0000000000000001 x12/a2 1ffffffc00872c7d x13/a3 ffffffe000a39ebe x14/a4 0000000000000000 x15/a5 0000000000000000 x16/a6 0000000000f00000 x17/a7 ffffffe0003301e6 x18/s2 0000003ffffffff8 x19/s3 0000003fffcc1430 x20/s4 ffffffe00a98be88 x21/s5 ffffffe00458c0d0 x22/s6 0000000000001000 x23/s7 0000002ac98f1c48 x24/s8 ffffffffffffffff x25/s9 0000000000000103 x26/s10 0000000000000001 x27/s11 0000000000000001 x28/t3 923a8dfe8adc6e00 x29/t4 ffffffc4015317d1 x30/t5 ffffffc4015317d2 x31/t6 0000000000040000 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