./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2195882838 <...> Warning: Permanently added '10.128.1.160' (ED25519) to the list of known hosts. execve("./syz-executor2195882838", ["./syz-executor2195882838"], 0x7ffc897e6b90 /* 10 vars */) = 0 brk(NULL) = 0x55557c178000 brk(0x55557c178d00) = 0x55557c178d00 arch_prctl(ARCH_SET_FS, 0x55557c178380) = 0 set_tid_address(0x55557c178650) = 296 set_robust_list(0x55557c178660, 24) = 0 rseq(0x55557c178ca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2195882838", 4096) = 28 getrandom("\x94\x2b\x32\xf6\x16\x1f\xd9\x35", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557c178d00 brk(0x55557c199d00) = 0x55557c199d00 brk(0x55557c19a000) = 0x55557c19a000 mprotect(0x7fbbde1ce000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 unshare(CLONE_NEWPID) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55557c178650) = 297 ./strace-static-x86_64: Process 297 attached [pid 297] set_robust_list(0x55557c178660, 24) = 0 [pid 297] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 297] getppid() = 0 [pid 297] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 297] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 297] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 297] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 297] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 297] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 297] unshare(CLONE_NEWNS) = 0 [pid 297] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 297] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 297] unshare(CLONE_NEWCGROUP) = 0 [pid 297] unshare(CLONE_NEWUTS) = 0 [pid 297] unshare(CLONE_SYSVSEM) = 0 [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 297] getpid() = 1 [pid 297] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< 0b e9 f6 fe ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 65 fc ff [ 25.080256][ T297] RSP: 0018:ffffc9000124fa08 EFLAGS: 00010293 [ 25.086623][ T297] RAX: ffffffff84bce361 RBX: 0000000080006000 RCX: ffff888101f33900 [ 25.094666][ T297] RDX: 0000000000000000 RSI: 0000000080006000 RDI: 0000000000000000 [ 25.102672][ T297] RBP: ffffc9000124fa50 R08: ffff8881109cdb7f R09: 1ffff11022139b6f [ 25.110647][ T297] R10: dffffc0000000000 R11: ffffed1022139b70 R12: ffff8881109cda00 [ 25.118726][ T297] R13: ffff8881109cda00 R14: ffff8881109cdb64 R15: 1ffff11022139b42 [ 25.126745][ T297] FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 25.135692][ T297] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 25.142329][ T297] CR2: 00000000006423c0 CR3: 000000010bf64000 CR4: 00000000003526b0 [ 25.151002][ T297] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 25.159028][ T297] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 25.167085][ T297] Call Trace: [ 25.170453][ T297] [ 25.173590][ T297] ? __cfi_inet_sock_destruct+0x10/0x10 [ 25.179259][ T297] __sk_destruct+0x6b/0x6a0 [ 25.183849][ T297] ? __sk_free+0x304/0x410 [ 25.188357][ T297] __sk_free+0x313/0x410 [ 25.192629][ T297] sk_free+0x58/0xb0 [ 25.196560][ T297] tcp_close+0xc4/0x120 [ 25.200811][ T297] inet_release+0x1b1/0x2c0 [ 25.205441][ T297] sock_close+0xdd/0x280 [ 25.209706][ T297] ? __cfi_sock_close+0x10/0x10 [ 25.214590][ T297] __fput+0x1fb/0xa00 [ 25.218579][ T297] ? call_rcu+0x14/0x20 [ 25.222764][ T297] ____fput+0x20/0x30 [ 25.226751][ T297] task_work_run+0x1e3/0x250 [ 25.231342][ T297] ? __cfi_task_work_run+0x10/0x10 [ 25.236511][ T297] ? free_nsproxy+0x223/0x290 [ 25.241238][ T297] do_exit+0x9b4/0x2630 [ 25.245469][ T297] ? __cfi_do_exit+0x10/0x10 [ 25.250163][ T297] ? __kasan_check_write+0x18/0x20 [ 25.255338][ T297] ? _raw_spin_lock_irq+0x8d/0x120 [ 25.260475][ T297] ? __cfi__raw_spin_lock_irq+0x10/0x10 [ 25.266239][ T297] ? zap_other_threads+0x334/0x370 [ 25.271379][ T297] do_group_exit+0x22a/0x300 [ 25.276005][ T297] __x64_sys_exit_group+0x43/0x50 [ 25.281029][ T297] x64_sys_call+0x2ed2/0x2ee0 [ 25.285733][ T297] do_syscall_64+0x58/0xf0 [ 25.290151][ T297] ? clear_bhb_loop+0x50/0xa0 [ 25.294851][ T297] entry_SYSCALL_64_after_hwframe+0x76/0x7e [ 25.300742][ T297] RIP: 0033:0x7fbbde153ca9 [ 25.305190][ T297] Code: Unable to access opcode bytes at 0x7fbbde153c7f. [ 25.312375][ T297] RSP: 002b:00007ffda9ebfd48 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 25.320966][ T297] RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007fbbde153ca9 [ 25.328996][ T297] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000001 [ 25.337006][ T297] RBP: 00007fbbde1d4370 R08: ffffffffffffffb8 R09: 0000555500000000 [ 25.345189][ T297] R10: 0000000004040841 R11: 0000000000000246 R12: 00007fbbde1d4370 [ 25.353270][ T297] R13: 0000000000000000 R14: 00007fbbde1d6ea0 R15: 00007fbbde1244b0 [pid 297] +++ exited with 1 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=297, si_uid=0, si_status=1, si_utime=0, si_stime=59} --- exit_group(0) = ? +++ exited with 0 +++ [ 25.361274][ T