./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3329858406 <...> DUID 00:04:15:32:48:1d:3b:73:54:4f:46:a6:7d:b2:d0:ec:1f:b1 forked to background, child pid 3191 [ 26.572425][ T3192] 8021q: adding VLAN 0 to HW filter on device bond0 [ 26.575474][ T3192] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.10.2' (ECDSA) to the list of known hosts. execve("./syz-executor3329858406", ["./syz-executor3329858406"], 0x7ffebf886ac0 /* 10 vars */) = 0 brk(NULL) = 0x5555560cb000 brk(0x5555560cbc40) = 0x5555560cbc40 arch_prctl(ARCH_SET_FS, 0x5555560cb300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor3329858406", 4096) = 28 brk(0x5555560ecc40) = 0x5555560ecc40 brk(0x5555560ed000) = 0x5555560ed000 mprotect(0x7fd6f2a75000, 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 3613 attached , child_tidptr=0x5555560cb5d0) = 3613 [pid 3613] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3613] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3613] setsid() = 1 [pid 3613] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3613] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3613] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3613] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3613] prlimit64(0, RLIMIT_CORE, {rlim_cur=0, rlim_max=0}, NULL) = 0 [pid 3613] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3613] unshare(CLONE_NEWNS) = 0 [pid 3613] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3613] unshare(CLONE_NEWIPC) = 0 [pid 3613] unshare(CLONE_NEWCGROUP) = 0 [pid 3613] unshare(CLONE_NEWUTS) = 0 [pid 3613] unshare(CLONE_SYSVSEM) = 0 [pid 3613] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3613] write(3, "16777216", 8) = 8 [pid 3613] close(3) = 0 [pid 3613] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3613] write(3, "536870912", 9) = 9 [pid 3613] close(3) = 0 [pid 3613] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3613] write(3, "1024", 4) = 4 [pid 3613] close(3) = 0 [pid 3613] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3613] write(3, "8192", 4) = 4 [pid 3613] close(3) = 0 [pid 3613] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3613] write(3, "1024", 4) = 4 [pid 3613] close(3) = 0 [pid 3613] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3613] write(3, "1024", 4) = 4 [pid 3613] close(3) = 0 [pid 3613] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3613] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3613] close(3) = 0 [pid 3613] getpid() = 1 [pid 3613] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 3613] +++ exited with 1 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3613, si_uid=0, si_status=1, si_utime=0, si_stime=8} --- exit_group(0) = ? +++ exited with 0 +++ [ 48.698522][ T3613] dump_stack_lvl+0xcd/0x134 [ 48.698538][ T3613] in6_dump_addrs+0x12d1/0x1790 [ 48.698562][ T3613] ? inet6_netconf_dump_devconf+0xe00/0xe00 [ 48.698587][ T3613] inet6_dump_addr+0x9c1/0xb50 [ 48.698607][ T3613] ? inet6_netconf_get_devconf+0xb60/0xb60 [ 48.698622][ T3613] ? rcu_read_lock_sched_held+0x3a/0x70 [ 48.698641][ T3613] ? memset+0x20/0x40 [ 48.698662][ T3613] netlink_dump+0x541/0xc20 [ 48.698676][ T3613] ? netlink_deliver_tap+0xc40/0xc40 [ 48.698694][ T3613] ? lock_downgrade+0x6e0