syzkaller login: [ 43.060495][ T2081] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 43.061898][ T2081] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. [ 49.295519][ T2081] netlink: 4 bytes leftover after parsing attributes in process `dhcpcd'. Warning: Permanently added '[localhost]:45473' (ECDSA) to the list of known hosts. 1970/01/01 00:01:00 fuzzer started 1970/01/01 00:01:03 dialing manager at localhost:40707 [ 64.120979][ T2229] cgroup: Unknown subsys name 'net' [ 64.245054][ T2229] cgroup: Unknown subsys name 'hugetlb' [ 64.245931][ T2229] cgroup: Unknown subsys name 'rlimit' 1970/01/01 00:01:04 syscalls: 2914 1970/01/01 00:01:04 code coverage: CONFIG_KCOV is not enabled 1970/01/01 00:01:04 comparison tracing: CONFIG_KCOV is not enabled 1970/01/01 00:01:04 extra coverage: CONFIG_KCOV is not enabled 1970/01/01 00:01:04 delay kcov mmap: CONFIG_KCOV is not enabled 1970/01/01 00:01:04 setuid sandbox: enabled 1970/01/01 00:01:04 namespace sandbox: enabled 1970/01/01 00:01:04 Android sandbox: /sys/fs/selinux/policy does not exist 1970/01/01 00:01:04 fault injection: enabled 1970/01/01 00:01:04 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 1970/01/01 00:01:04 net packet injection: enabled 1970/01/01 00:01:04 net device setup: enabled 1970/01/01 00:01:04 concurrency sanitizer: /sys/kernel/debug/kcsan does not exist 1970/01/01 00:01:04 devlink PCI setup: PCI device 0000:00:10.0 is not available 1970/01/01 00:01:04 NIC VF setup: PCI device 0000:00:11.0 is not available 1970/01/01 00:01:04 USB emulation: enabled 1970/01/01 00:01:04 hci packet injection: /dev/vhci does not exist 1970/01/01 00:01:04 wifi device emulation: /sys/class/mac80211_hwsim/ does not exist 1970/01/01 00:01:04 802.15.4 emulation: /sys/bus/platform/devices/mac802154_hwsim does not exist 1970/01/01 00:01:04 fetching corpus: 0, signal 0/0 (executing program) 1970/01/01 00:01:04 fetching corpus: 0, signal 0/0 (executing program) 1970/01/01 00:01:27 starting 2 fuzzer processes 00:01:27 executing program 0: mknod$loop(0x0, 0x0, 0x1) 00:01:27 executing program 1: syz_mount_image$ext4(&(0x7f0000000000)='ext4\x00', &(0x7f0000000240)='./file0\x00', 0x40004, 0x3, &(0x7f0000000340)=[{&(0x7f0000010000)="20000000000100000c000000dc0000000f000000010000000000000000000000002000000020000020000000def4655fdef4655f0100ffff53ef010001000000ddf4655f000000000000000001000000000000000b0000000001", 0x5a, 0x400}, {&(0x7f0000010400)="030000000400000005", 0x9, 0x800}, {&(0x7f0000010e00)="ed4100003b040000ddf4655fdef4655fdef4655f00000000f47b015bf48f40c706ed", 0x22, 0x1500}], 0x0, &(0x7f0000012800)=ANY=[], 0x0) chroot(&(0x7f0000000080)='./file0\x00') openat$vga_arbiter(0xffffff9c, &(0x7f0000000380), 0x0, 0x0) panic: unaligned 64-bit atomic operation goroutine 8 [running]: runtime/internal/atomic.panicUnaligned() /usr/local/go/src/runtime/internal/atomic/unaligned.go:8 +0x24 runtime/internal/atomic.Xadd64(0x2caa7c4, 0x1) /usr/local/go/src/runtime/internal/atomic/atomic_arm.s:256 +0x14 main.(*Proc).executeRaw(0x2f1e920, 0x2c94b88, 0x2c8f8e0, 0x2) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:320 +0x158 main.(*Proc).execute(0x2f1e920, 0x2c94b88, 0x2c8f8e0, 0x7, 0x2) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:255 +0x38 main.(*Proc).loop(0x2f1e920) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:76 +0xe8 created by main.main /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:307 +0x1740 panic: unaligned 64-bit atomic operation goroutine 9 [running]: runtime/internal/atomic.panicUnaligned() /usr/local/go/src/runtime/internal/atomic/unaligned.go:8 +0x24 runtime/internal/atomic.Xadd64(0x2caa7c4, 0x1) /usr/local/go/src/runtime/internal/atomic/atomic_arm.s:256 +0x14 main.(*Proc).executeRaw(0x2f1eb60, 0x2c94b88, 0x2f1f080, 0x2) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:320 +0x158 main.(*Proc).execute(0x2f1eb60, 0x2c94b88, 0x2f1f080, 0x7, 0x2) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:255 +0x38 main.(*Proc).loop(0x2f1eb60) /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/proc.go:76 +0xe8 created by main.main /syzkaller/gopath/src/github.com/google/syzkaller/syz-fuzzer/fuzzer.go:307 +0x1740 VM DIAGNOSIS: 10:59:00 Registers: info registers vcpu 0 R00=825a01c0 R01=8428c900 R02=00000039 R03=810bb424 R04=82687ec0 R05=000043f0 R06=000043f0 R07=00000000 R08=00000014 R09=00000000 R10=8424ea50 R11=df801a94 R12=df801a98 R13=df801a88 R14=810bb458 R15=810bb434 PSR=60000113 -ZC- A S svc32 s00=2720656d s01=6d696c72 d00=6d696c722720656d s02=205b5d39 s03=38303254 d01=38303254205b5d39 s04=6e205d31 s05=696c7465 d02=696c74656e205d31 s06=203a6b6e s07=79622034 d03=79622034203a6b6e s08=20736574 s09=7466656c d04=7466656c20736574 s10=7265766f s11=74666120 d05=746661207265766f s12=70207265 s13=69737261 d06=6973726170207265 s14=6120676e s15=69727474 d07=697274746120676e s16=00000000 s17=00000000 d08=0000000000000000 s18=00000000 s19=00000000 d09=0000000000000000 s20=00000000 s21=00000000 d10=0000000000000000 s22=00000000 s23=00000000 d11=0000000000000000 s24=00000000 s25=00000000 d12=0000000000000000 s26=00000000 s27=00000000 d13=0000000000000000 s28=00000000 s29=00000000 d14=0000000000000000 s30=00000000 s31=00000000 d15=0000000000000000 s32=00000000 s33=00000000 d16=0000000000000000 s34=00000000 s35=00000000 d17=0000000000000000 s36=00000000 s37=00000000 d18=0000000000000000 s38=00000000 s39=00000000 d19=0000000000000000 s40=00000000 s41=00000000 d20=0000000000000000 s42=00000000 s43=00000000 d21=0000000000000000 s44=00000000 s45=00000000 d22=0000000000000000 s46=00000000 s47=00000000 d23=0000000000000000 s48=00000000 s49=00000000 d24=0000000000000000 s50=00000000 s51=00000000 d25=0000000000000000 s52=00000000 s53=00000000 d26=0000000000000000 s54=00000000 s55=00000000 d27=0000000000000000 s56=00000000 s57=00000000 d28=0000000000000000 s58=00000000 s59=00000000 d29=0000000000000000 s60=00000000 s61=00000000 d30=0000000000000000 s62=00000000 s63=00000000 d31=0000000000000000 FPSCR: 00000000 info registers vcpu 1 R00=00000001 R01=00000000 R02=000fc5a1 R03=8021c360 R04=828ec680 R05=8240c494 R06=00000001 R07=8240c4dc R08=00000000 R09=00000000 R10=825d57de R11=df85df64 R12=df85df68 R13=df85df58 R14=80208ed4 R15=8021c368 PSR=60030093 -ZC- A S svc32 s00=70f51ad1 s01=eac73c6b d00=eac73c6b70f51ad1 s02=30303030 s03=32303030 d01=3230303030303030 s04=ae32d80f s05=7434d189 d02=7434d189ae32d80f s06=68f91a0d s07=10ac039e d03=10ac039e68f91a0d s08=09c86be9 s09=f3ab963f d04=f3ab963f09c86be9 s10=c7b1ce19 s11=bb237d35 d05=bb237d35c7b1ce19 s12=00000009 s13=00000000 d06=0000000000000009 s14=00000000 s15=1b000000 d07=1b00000000000000 s16=00000000 s17=00000000 d08=0000000000000000 s18=00000000 s19=00000000 d09=0000000000000000 s20=00000000 s21=00000000 d10=0000000000000000 s22=00000000 s23=00000000 d11=0000000000000000 s24=00000000 s25=00000000 d12=0000000000000000 s26=00000000 s27=00000000 d13=0000000000000000 s28=00000000 s29=00000000 d14=0000000000000000 s30=00000000 s31=00000000 d15=0000000000000000 s32=a49bdc75 s33=8c8cb7c4 d16=8c8cb7c4a49bdc75 s34=8587625f s35=dc000c26 d17=dc000c268587625f s36=cdd2b6a1 s37=1e1e7235 d18=1e1e7235cdd2b6a1 s38=10002732 s39=ff556cc2 d19=ff556cc210002732 s40=590e694b s41=9a1f97c6 d20=9a1f97c6590e694b s42=8deddb96 s43=45770a28 d21=45770a288deddb96 s44=795f7aee s45=5beceb74 d22=5beceb74795f7aee s46=330d1358 s47=cb60eb35 d23=cb60eb35330d1358 s48=00000001 s49=00000000 d24=0000000000000001 s50=00000000 s51=00000000 d25=0000000000000000 s52=34303030 s53=30303030 d26=3030303034303030 s54=35303030 s55=30202c22 d27=30202c2235303030 s56=202c3978 s57=30387830 d28=30387830202c3978 s58=202c7d30 s59=3028267b d29=3028267b202c7d30 s60=30663778 s61=30303030 d30=3030303030663778 s62=30653031 s63=223d2930 d31=223d293030653031 FPSCR: 00000000