./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2181593753 <...> DUID 00:04:5a:7a:52:ad:4b:e5:ff:c1:d1:3d:bd:97:7e:8a:4f:1f forked to background, child pid 3189 [ 26.769679][ T3190] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.780565][ T3190] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.32' (ECDSA) to the list of known hosts. execve("./syz-executor2181593753", ["./syz-executor2181593753"], 0x7ffefac3e890 /* 10 vars */) = 0 brk(NULL) = 0x5555559f1000 brk(0x5555559f1c40) = 0x5555559f1c40 arch_prctl(ARCH_SET_FS, 0x5555559f1300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2181593753", 4096) = 28 brk(0x555555a12c40) = 0x555555a12c40 brk(0x555555a13000) = 0x555555a13000 mprotect(0x7f6283fe3000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 3618 attached , child_tidptr=0x5555559f15d0) = 3618 [pid 3618] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3618] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3618] setsid() = 1 [pid 3618] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3618] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3618] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3618] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3618] prlimit64(0, RLIMIT_CORE, {rlim_cur=0, rlim_max=0}, NULL) = 0 [pid 3618] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3618] unshare(CLONE_NEWNS) = 0 [pid 3618] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3618] unshare(CLONE_NEWIPC) = 0 [pid 3618] unshare(CLONE_NEWCGROUP) = 0 [pid 3618] unshare(CLONE_NEWUTS) = 0 [pid 3618] unshare(CLONE_SYSVSEM) = 0 [pid 3618] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3618] write(3, "16777216", 8) = 8 [pid 3618] close(3) = 0 [pid 3618] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3618] write(3, "536870912", 9) = 9 [pid 3618] close(3) = 0 [pid 3618] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3618] write(3, "1024", 4) = 4 [pid 3618] close(3) = 0 [pid 3618] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3618] write(3, "8192", 4) = 4 [pid 3618] close(3) = 0 [pid 3618] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3618] write(3, "1024", 4) = 4 [pid 3618] close(3) = 0 [pid 3618] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3618] write(3, "1024", 4) = 4 [pid 3618] close(3) = 0 [pid 3618] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3618] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3618] close(3) = 0 [pid 3618] getpid() = 1 [pid 3618] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [ 49.814303][ T3618] dump_stack_lvl+0xcd/0x134 [ 49.814332][ T3618] in6_dump_addrs+0x12d1/0x1790 [ 49.814376][ T3618] ? inet6_netconf_dump_devconf+0xe00/0xe00 [ 49.814419][ T3618] inet6_dump_addr+0x9c1/0xb50 [ 49.814463][ T3618] ? inet6_netconf_get_devconf+0xb60/0xb60 [ 49.814492][ T3618] ? rcu_read_lock_sched_held+0x3a/0x70 [ 49.814525][ T3618] ? memset+0x20/0x40 [ 49.814563][ T3618] netlink_dump+0x541/0xc20 [ 49.814589][ T3618] ? netlink_deliver_tap+0xc40/0xc40 [ 49.814622][ T3618] ? lock_downgrade+0x6e0/0x6e0 [ 49.814658][ T3618] __netlink_dump_start+0x647/0x900 [ 49.814690][ T3618] rtnetlink_rcv_msg+0x73e/0xc90 [ 49.814716][ T3618] ? inet6_dump_ifacaddr+0x30/0x30 [ 49.814747][ T3618] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 49.814777][ T3618] ? inet6_dump_ifacaddr+0x30/0x30 [ 49.814830][ T3618] netlink_rcv_skb+0x153/0x420 [ 49.814854][ T3618] ? rtnl_fdb_dump+0x9a0/0x9a0 [ 49.814876][ T3618] ? netlink_ack+0xa80/0xa80 [ 49.814887][ T3618] ? netlink_deliver_tap+0x1a2/0xc40 [ 49.814903][ T3618] ? netlink_deliver_tap+0x1b1/0xc40 [pid 3618] +++ exited with 1 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3618, si_uid=0, si_status=1, si_utime=0, si_stime=7} --- exit_group(0) = ? +++ exited with 0 +++ [ 49.814920][ T3618] net