./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor80620249 <...> [ 25.649536][ T3194] dhcpcd-run-hook (3194) used greatest stack depth: 22440 bytes left forked to background, child pid 3190 [ 27.095886][ T3191] 8021q: adding VLAN 0 to HW filter on device bond0 [ 27.098458][ T3191] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.1.82' (ECDSA) to the list of known hosts. execve("./syz-executor80620249", ["./syz-executor80620249"], 0x7ffd98722e60 /* 10 vars */) = 0 brk(NULL) = 0x555556d4a000 brk(0x555556d4ac40) = 0x555556d4ac40 arch_prctl(ARCH_SET_FS, 0x555556d4a300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor80620249", 4096) = 26 brk(0x555556d6bc40) = 0x555556d6bc40 brk(0x555556d6c000) = 0x555556d6c000 mprotect(0x7f9deac33000, 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 3612 attached , child_tidptr=0x555556d4a5d0) = 3612 [pid 3612] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 3612] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 3612] setsid() = 1 [pid 3612] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 3612] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 3612] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 3612] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 3612] prlimit64(0, RLIMIT_CORE, {rlim_cur=0, rlim_max=0}, NULL) = 0 [pid 3612] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 3612] unshare(CLONE_NEWNS) = 0 [pid 3612] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 3612] unshare(CLONE_NEWIPC) = 0 [pid 3612] unshare(CLONE_NEWCGROUP) = 0 [pid 3612] unshare(CLONE_NEWUTS) = 0 [pid 3612] unshare(CLONE_SYSVSEM) = 0 [pid 3612] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3612] write(3, "16777216", 8) = 8 [pid 3612] close(3) = 0 [pid 3612] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = 3 [pid 3612] write(3, "536870912", 9) = 9 [pid 3612] close(3) = 0 [pid 3612] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3612] write(3, "1024", 4) = 4 [pid 3612] close(3) = 0 [pid 3612] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = 3 [pid 3612] write(3, "8192", 4) = 4 [pid 3612] close(3) = 0 [pid 3612] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = 3 [pid 3612] write(3, "1024", 4) = 4 [pid 3612] close(3) = 0 [pid 3612] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = 3 [pid 3612] write(3, "1024", 4) = 4 [pid 3612] close(3) = 0 [pid 3612] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = 3 [pid 3612] write(3, "1024 1048576 500 1024", 21) = 21 [pid 3612] close(3) = 0 [pid 3612] getpid() = 1 [pid 3612] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release+0x86/0x280 [ 50.518628][ T3612] #1: ffff888026a11ab0 (sk_lock-AF_INET6){+.+.}-{0:0}, at: tcp_close+0x1e/0xc0 [ 50.518693][ T3612] #2: ffff888026a11a30 (slock-AF_INET6){+...}-{2:2}, at: __tcp_close+0x722/0x12b0 [ 50.518745][ T3612] Preemption disabled at: [ 50.518749][ T3612] [] __tcp_close+0x71a/0x12b0 [ 50.518773][ T3612] CPU: 0 PID: 3612 Comm: syz-executor806 Not tainted 5.19.0-rc1-next-20220609-syzkaller #0 [ 50.518793][ T3612] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.518803][ T3612] Call Trace: [ 50.518808][ T3612] [ 50.518815][ T3612] dump_stack_lvl+0xcd/0x134 [ 50.518839][ T3612] __might_resched.cold+0x222/0x26b [pid 3612] +++ exited with 1 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=3612, si_uid=0, si_status=1, si_utime=0, si_stime=13} --- exit_group(0) = ? +++ exited with 0 +++ [ 50.518867][ T3612] __flush_wor