./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3261842545 <...> Warning: Permanently added '10.128.1.71' (ED25519) to the list of known hosts. execve("./syz-executor3261842545", ["./syz-executor3261842545"], 0x7ffd57ac5db0 /* 10 vars */) = 0 brk(NULL) = 0x555557294000 brk(0x555557294e00) = 0x555557294e00 arch_prctl(ARCH_SET_FS, 0x555557294480) = 0 set_tid_address(0x555557294750) = 294 set_robust_list(0x555557294760, 24) = 0 rseq(0x555557294da0, 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-executor3261842545", 4096) = 28 getrandom("\xa0\x8e\x8e\x47\xdc\x56\x78\x90", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555557294e00 brk(0x5555572b5e00) = 0x5555572b5e00 brk(0x5555572b6000) = 0x5555572b6000 mprotect(0x7efd4ec52000, 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 getpid() = 294 openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC) = 3 write(3, "10000000000", 11) = 11 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = 3 write(3, "20", 2) = 2 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 write(3, "100", 3) = 3 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 write(3, "7 4 1 3", 7) = 7 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 write(3, "294", 3) = 3 close(3) = 0 mount(NULL, "/proc/sys/fs/binfmt_misc", "binfmt_misc", 0, NULL) = -1 EBUSY (Device or resource busy) openat(AT_FDCWD, "/proc/sys/fs/binfmt_misc/register", O_WRONLY|O_CLOEXEC) = 3 write(3, "\x3a\x73\x79\x7a\x30\x3a\x4d\x3a\x30\x3a\x01\x3a\x3a\x2e\x2f\x66\x69\x6c\x65\x30\x3a", 21) = 21 close(3) = 0 openat(AT_FDCWD, "/proc/sys/fs/binfmt_misc/register", O_WRONLY|O_CLOEXEC) = 3 write(3, "\x3a\x73\x79\x7a\x31\x3a\x4d\x3a\x31\x3a\x02\x3a\x3a\x2e\x2f\x66\x69\x6c\x65\x30\x3a\x50\x4f\x43", 24) = 24 close(3) = 0 rt_sigaction(SIGRTMIN, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=SIG_IGN, sa_mask=[], sa_flags=0}, NULL, 8) = 0 rt_sigaction(SIGSEGV, {sa_handler=0x7efd4eb97430, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, NULL, 8) = 0 rt_sigaction(SIGBUS, {sa_handler=0x7efd4eb97430, sa_mask=[], sa_flags=SA_RESTORER|SA_NODEFER|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, NULL, 8) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557294750) = 295 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557294750) = 296 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557294750) = 297 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557294750) = 298 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557294750) = 299 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557294750) = 300 ./strace-static-x86_64: Process 298 attached [pid 298] set_robust_list(0x555557294760, 24./strace-static-x86_64: Process 300 attached ) = 0 [pid 298] unshare(CLONE_NEWPID [pid 300] set_robust_list(0x555557294760, 24) = 0 [pid 300] unshare(CLONE_NEWPID [pid 298] <... unshare resumed>) = 0 [pid 300] <... unshare resumed>) = 0 [pid 300] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 295 attached [pid 295] set_robust_list(0x555557294760, 24) = 0 [pid 295] unshare(CLONE_NEWPID) = 0 [pid 298] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 295] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 300] <... clone resumed>, child_tidptr=0x555557294750) = 301 [pid 298] <... clone resumed>, child_tidptr=0x555557294750) = 302 [pid 295] <... clone resumed>, child_tidptr=0x555557294750) = 303 ./strace-static-x86_64: Process 302 attached [pid 302] set_robust_list(0x555557294760, 24) = 0 [pid 302] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 302] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 302] setsid() = 1 [pid 302] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 302] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 302] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 302] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 302] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 302] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 302] unshare(CLONE_NEWNS) = 0 [pid 302] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 302] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 302] unshare(CLONE_NEWCGROUP) = 0 [pid 302] unshare(CLONE_NEWUTS) = 0 [pid 302] unshare(CLONE_SYSVSEM) = 0 [pid 302] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 302] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 302] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 302] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 302] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 302] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 302] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 302] getpid() = 1 [pid 302] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 303] set_robust_list(0x555557294760, 24./strace-static-x86_64: Process 301 attached ./strace-static-x86_64: Process 299 attached ) = 0 [pid 303] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL [pid 299] set_robust_list(0x555557294760, 24 [pid 303] <... mount resumed>) = -1 EBUSY (Device or resource busy) [pid 301] set_robust_list(0x555557294760, 24 [pid 299] <... set_robust_list resumed>) = 0 [pid 303] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 301] <... set_robust_list resumed>) = 0 [pid 299] unshare(CLONE_NEWPID./strace-static-x86_64: Process 297 attached [pid 303] <... prctl resumed>) = 0 [pid 303] setsid() = 1 [pid 303] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, [pid 301] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL [pid 303] <... prlimit64 resumed>NULL) = 0 [pid 303] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, [pid 299] <... unshare resumed>) = 0 [pid 303] <... prlimit64 resumed>NULL) = 0 [pid 299] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 303] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 303] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 303] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, [pid 301] <... mount resumed>) = -1 EBUSY (Device or resource busy) [pid 303] <... prlimit64 resumed>NULL) = 0 [pid 303] unshare(CLONE_NEWNS [pid 301] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 303] <... unshare resumed>) = 0 [pid 301] <... prctl resumed>) = 0 [pid 303] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL [pid 301] setsid( [pid 303] <... mount resumed>) = 0 [pid 301] <... setsid resumed>) = 1 [pid 303] unshare(CLONE_NEWIPC [pid 301] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 303] <... unshare resumed>) = -1 EINVAL (Invalid argument) [pid 303] unshare(CLONE_NEWCGROUP [pid 301] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, ./strace-static-x86_64: Process 296 attached [pid 303] <... unshare resumed>) = 0 [pid 301] <... prlimit64 resumed>NULL) = 0 [pid 297] set_robust_list(0x555557294760, 24./strace-static-x86_64: Process 304 attached [pid 304] set_robust_list(0x555557294760, 24) = 0 [pid 304] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL) = -1 EBUSY (Device or resource busy) [pid 304] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 304] setsid() = 1 [pid 304] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 304] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 304] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 304] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 304] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 304] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 304] unshare(CLONE_NEWNS) = 0 [pid 304] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 304] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 304] unshare(CLONE_NEWCGROUP) = 0 [pid 304] unshare(CLONE_NEWUTS) = 0 [pid 304] unshare(CLONE_SYSVSEM) = 0 [pid 304] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 304] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 304] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 304] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 304] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 304] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 304] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 304] getpid() = 1 [pid 304] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 303] unshare(CLONE_NEWUTS [pid 301] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, [pid 299] <... clone resumed>, child_tidptr=0x555557294750) = 304 [pid 296] set_robust_list(0x555557294760, 24 [pid 303] <... unshare resumed>) = 0 [pid 301] <... prlimit64 resumed>NULL) = 0 [pid 301] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, [pid 303] unshare(CLONE_SYSVSEM [pid 297] <... set_robust_list resumed>) = 0 [pid 296] <... set_robust_list resumed>) = 0 [pid 301] <... prlimit64 resumed>NULL) = 0 [pid 303] <... unshare resumed>) = 0 [pid 296] unshare(CLONE_NEWPID [pid 301] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, [pid 303] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC [pid 301] <... prlimit64 resumed>NULL) = 0 [pid 301] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, [pid 303] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 301] <... prlimit64 resumed>NULL) = 0 [pid 297] unshare(CLONE_NEWPID [pid 301] unshare(CLONE_NEWNS [pid 303] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC [pid 296] <... unshare resumed>) = 0 [pid 297] <... unshare resumed>) = 0 [pid 301] <... unshare resumed>) = 0 [pid 303] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 301] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL [pid 297] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 296] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC [pid 301] <... mount resumed>) = 0 [pid 303] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 301] unshare(CLONE_NEWIPC [pid 302] <... unshare resumed>) = 0 [pid 302] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3 [pid 302] write(3, "0 65535", 7) = 7 [pid 302] close(3) = 0 [pid 302] mkdir("/dev/binderfs", 0777) = 0 [pid 302] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0 [pid 304] <... unshare resumed>) = 0 [pid 302] symlink("/dev/binderfs", "./binderfs") = 0 [pid 302] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 302] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 302] close(3) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 305 attached [pid 305] set_robust_list(0x555557294760, 24) = 0 [pid 305] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL [pid 302] <... clone resumed>, child_tidptr=0x555557294750) = 2 [pid 305] <... mount resumed>) = -1 EBUSY (Device or resource busy) [pid 305] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 305] setsid() = 1 [pid 305] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, NULL) = 0 [pid 305] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 305] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 305] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, NULL) = 0 [pid 305] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, NULL) = 0 [pid 305] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 305] unshare(CLONE_NEWNS) = 0 [pid 305] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL) = 0 [pid 305] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 305] unshare(CLONE_NEWCGROUP) = 0 [pid 305] unshare(CLONE_NEWUTS) = 0 [pid 305] unshare(CLONE_SYSVSEM) = 0 [pid 305] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 305] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 305] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 305] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) ./strace-static-x86_64: Process 306 attached [pid 305] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] set_robust_list(0x555557294760, 24 [pid 305] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] <... set_robust_list resumed>) = 0 [pid 306] mount(NULL, "/sys/fs/fuse/connections", "fusectl", 0, NULL [pid 305] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] <... mount resumed>) = -1 EBUSY (Device or resource busy) [pid 305] getpid() = 1 [pid 303] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC [pid 305] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1<) = -1 EINVAL (Invalid argument) [pid 297] <... clone resumed>, child_tidptr=0x555557294750) = 305 [pid 296] <... clone resumed>, child_tidptr=0x555557294750) = 306 [pid 305] capset({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 305] unshare(CLONE_NEWNET [pid 306] <... prctl resumed>) = 0 [pid 303] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 301] unshare(CLONE_NEWCGROUP [pid 306] setsid( [pid 301] <... unshare resumed>) = 0 [pid 303] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC [pid 306] <... setsid resumed>) = 1 [pid 301] unshare(CLONE_NEWUTS [pid 306] prlimit64(0, RLIMIT_AS, {rlim_cur=204800*1024, rlim_max=204800*1024}, [pid 303] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 301] <... unshare resumed>) = 0 [pid 306] <... prlimit64 resumed>NULL) = 0 [pid 306] prlimit64(0, RLIMIT_MEMLOCK, {rlim_cur=32768*1024, rlim_max=32768*1024}, NULL) = 0 [pid 306] prlimit64(0, RLIMIT_FSIZE, {rlim_cur=139264*1024, rlim_max=139264*1024}, NULL) = 0 [pid 306] prlimit64(0, RLIMIT_STACK, {rlim_cur=1024*1024, rlim_max=1024*1024}, [pid 301] unshare(CLONE_SYSVSEM [pid 303] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC [pid 301] <... unshare resumed>) = 0 [pid 303] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 306] <... prlimit64 resumed>NULL) = 0 [pid 301] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC [pid 303] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC [pid 306] prlimit64(0, RLIMIT_CORE, {rlim_cur=131072*1024, rlim_max=131072*1024}, [pid 301] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 303] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 306] <... prlimit64 resumed>NULL) = 0 [ 21.266334][ T28] audit: type=1400 audit(1692591405.900:68): avc: denied { mount } for pid=294 comm="syz-executor326" name="/" dev="binfmt_misc" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:binfmt_misc_fs_t tclass=filesystem permissive=1 [ 21.293480][ T28] audit: type=1400 audit(1692591405.910:69): avc: denied { mounton } for pid=302 comm="syz-executor326" path="/sys/fs/fuse/connections" dev="fusectl" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=dir permissive=1 [pid 306] prlimit64(0, RLIMIT_NOFILE, {rlim_cur=256, rlim_max=256}, NULL) = 0 [pid 306] unshare(CLONE_NEWNS [pid 301] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC [pid 303] getpid( [pid 306] <... unshare resumed>) = 0 ./strace-static-x86_64: Process 308 attached [pid 306] mount(NULL, "/", NULL, MS_REC|MS_PRIVATE, NULL [pid 308] set_robust_list(0x555557294760, 24 [pid 306] <... mount resumed>) = 0 [pid 306] unshare(CLONE_NEWIPC) = -1 EINVAL (Invalid argument) [pid 308] <... set_robust_list resumed>) = 0 [pid 308] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 306] unshare(CLONE_NEWCGROUP) = 0 [pid 306] unshare(CLONE_NEWUTS) = 0 [pid 306] unshare(CLONE_SYSVSEM) = 0 [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/shmmax", O_WRONLY|O_CLOEXEC [pid 308] <... prctl resumed>) = 0 [pid 308] setpgid(0, 0) = 0 [pid 306] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 308] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/shmall", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 308] <... openat resumed>) = 3 [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 306] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) [pid 308] write(3, "1000", 4 [pid 306] getpid( [pid 308] <... write resumed>) = 4 [pid 306] <... getpid resumed>) = 1 [pid 308] close(3 [pid 306] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, [pid 308] <... close resumed>) = 0 [pid 306] <... capget resumed>{effective=1< [pid 306] unshare(CLONE_NEWNET [pid 308] <... futex resumed>) = 0 [pid 308] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, NULL, 8) = 0 [pid 308] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 308] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb6c000 [pid 308] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} => {parent_tid=[3]}, 88) = 3 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 308] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 308] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 308] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb4b000 [pid 308] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 308] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 308] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} => {parent_tid=[4]}, 88) = 4 [pid 308] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 308] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 308] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC) = 3 [pid 304] write(3, "0 65535", 7) = 7 [pid 304] close(3) = 0 [pid 304] mkdir("/dev/binderfs", 0777) = -1 EEXIST (File exists) [pid 304] mount("binder", "/dev/binderfs", "binder", 0, NULL) = 0 [pid 304] symlink("/dev/binderfs", "./binderfs") = -1 EEXIST (File exists) [pid 304] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 304] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 304] close(3./strace-static-x86_64: Process 309 attached [pid 303] <... getpid resumed>) = 1 [pid 301] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 304] <... close resumed>) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 310 attached [pid 310] set_robust_list(0x7efd4eb6b9a0, 24) = 0 [pid 310] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 310] creat("./bus", 000) = 3 [pid 304] <... clone resumed>, child_tidptr=0x555557294750) = 2 [pid 310] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... futex resumed>) = 0 [pid 308] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 308] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] <... futex resumed>) = 1 [pid 310] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL) = 0 [pid 310] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... futex resumed>) = 0 [pid 308] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 308] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] <... futex resumed>) = 1 [pid 310] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c) = 4 [pid 310] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... futex resumed>) = 0 [pid 308] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 308] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 310] <... futex resumed>) = 1 [pid 310] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 4, 0./strace-static-x86_64: Process 311 attached [pid 309] set_robust_list(0x7efd4eb8c9a0, 24 [pid 303] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, [pid 301] openat(AT_FDCWD, "/proc/sys/kernel/shmmni", O_WRONLY|O_CLOEXEC [pid 310] <... mmap resumed>) = 0x20000000 [pid 310] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 308] <... futex resumed>) = 0 [pid 308] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 310] <... futex resumed>) = 1 [pid 310] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20000000} --- [pid 310] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20000140} --- [pid 310] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x200000c0} --- [pid 310] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x200000f6} --- [pid 310] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20000108} --- [pid 310] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20000280} --- [pid 310] memfd_create("syzkaller", 0) = 5 [pid 310] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7efd4674b000 [pid 310] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20000282} --- [pid 310] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 310] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 311] set_robust_list(0x555557294760, 24 [pid 309] <... set_robust_list resumed>) = 0 [pid 303] <... capget resumed>{effective=1<) = -1 ENOENT (No such file or directory) [pid 309] rt_sigprocmask(SIG_SETMASK, [], [pid 303] capset({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 311] <... set_robust_list resumed>) = 0 [pid 301] openat(AT_FDCWD, "/proc/sys/kernel/msgmax", O_WRONLY|O_CLOEXEC [pid 309] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 303] <... capset resumed>) = 0 [pid 311] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 309] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x200005c0} --- [pid 303] unshare(CLONE_NEWNET [pid 301] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 309] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20000000} --- [pid 311] <... prctl resumed>) = 0 [pid 301] openat(AT_FDCWD, "/proc/sys/kernel/msgmni", O_WRONLY|O_CLOEXEC [pid 309] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20001400} --- [pid 311] setpgid(0, 0 [pid 301] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 309] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20001790} --- [pid 311] <... setpgid resumed>) = 0 [pid 309] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20000f00} --- [pid 311] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 309] memfd_create("syzkaller", 0 [pid 301] openat(AT_FDCWD, "/proc/sys/kernel/msgmnb", O_WRONLY|O_CLOEXEC [pid 309] <... memfd_create resumed>) = 6 [pid 301] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 309] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 311] <... openat resumed>) = 3 [pid 309] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 301] openat(AT_FDCWD, "/proc/sys/kernel/sem", O_WRONLY|O_CLOEXEC [pid 311] write(3, "1000", 4 [pid 309] close(6) = 0 [pid 301] <... openat resumed>) = -1 ENOENT (No such file or directory) [pid 309] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... write resumed>) = 4 [pid 309] <... futex resumed>) = 0 [pid 301] getpid( [pid 309] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 301] <... getpid resumed>) = 1 [pid 311] close(3 [pid 308] close(3) = 0 [pid 308] close(4) = 0 [pid 308] close(5) = 0 [pid 308] close(6) = -1 EBADF (Bad file descriptor) [pid 308] close(7) = -1 EBADF (Bad file descriptor) [pid 308] close(8) = -1 EBADF (Bad file descriptor) [pid 308] close(9) = -1 EBADF (Bad file descriptor) [pid 308] close(10) = -1 EBADF (Bad file descriptor) [pid 308] close(11) = -1 EBADF (Bad file descriptor) [pid 308] close(12) = -1 EBADF (Bad file descriptor) [pid 308] close(13) = -1 EBADF (Bad file descriptor) [pid 308] close(14) = -1 EBADF (Bad file descriptor) [pid 308] close(15) = -1 EBADF (Bad file descriptor) [pid 308] close(16) = -1 EBADF (Bad file descriptor) [pid 308] close(17 [pid 311] <... close resumed>) = 0 [pid 308] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] capget({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, [pid 308] close(18) = -1 EBADF (Bad file descriptor) [pid 308] close(19 [pid 301] <... capget resumed>{effective=1< [pid 308] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 308] close(20) = -1 EBADF (Bad file descriptor) [pid 308] close(21) = -1 EBADF (Bad file descriptor) [pid 308] close(22) = -1 EBADF (Bad file descriptor) [pid 308] close(23) = -1 EBADF (Bad file descriptor) [pid 308] close(24) = -1 EBADF (Bad file descriptor) [pid 308] close(25) = -1 EBADF (Bad file descriptor) [pid 308] close(26 [pid 311] <... futex resumed>) = 0 [pid 308] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] capset({version=_LINUX_CAPABILITY_VERSION_3, pid=1}, {effective=1< [pid 308] close(27) = -1 EBADF (Bad file descriptor) [pid 308] close(28) = -1 EBADF (Bad file descriptor) [pid 308] close(29 [pid 301] <... capset resumed>) = 0 [pid 311] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 308] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] unshare(CLONE_NEWNET [pid 311] <... rt_sigaction resumed>NULL, 8) = 0 [pid 308] exit_group(0 [pid 310] <... futex resumed>) = ? [pid 309] <... futex resumed>) = ? [pid 308] <... exit_group resumed>) = ? [ 21.319705][ T28] audit: type=1400 audit(1692591405.910:70): avc: denied { mount } for pid=302 comm="syz-executor326" name="/" dev="fusectl" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fusefs_t tclass=filesystem permissive=1 [ 21.343629][ T28] audit: type=1400 audit(1692591405.910:71): avc: denied { mounton } for pid=302 comm="syz-executor326" path="/" dev="sda1" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:root_t tclass=dir permissive=1 [ 21.365587][ T28] audit: type=1400 audit(1692591405.960:72): avc: denied { mounton } for pid=302 comm="syz-executor326" path="/dev/binderfs" dev="devtmpfs" ino=370 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:device_t tclass=dir permissive=1 [pid 311] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 310] +++ exited with 0 +++ [pid 309] +++ exited with 0 +++ [pid 308] +++ exited with 0 +++ [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 302] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 302] close(3) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557294750) = 5 ./strace-static-x86_64: Process 313 attached [pid 313] set_robust_list(0x555557294760, 24) = 0 [pid 313] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 313] setpgid(0, 0) = 0 [pid 313] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 313] write(3, "1000", 4) = 4 [pid 313] close(3) = 0 [pid 313] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, NULL, 8) = 0 [pid 313] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 313] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb6c000 [pid 313] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 313] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 313] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} => {parent_tid=[6]}, 88) = 6 [pid 313] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 313] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb4b000 [pid 313] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 305] <... unshare resumed>) = 0 [pid 313] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 313] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} => {parent_tid=[7]}, 88) = 7 [pid 313] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 313] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC [pid 313] <... futex resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 313] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] write(3, "0 65535", 7) = 7 [pid 305] close(3) = 0 [pid 305] mkdir("/dev/binderfs", 0777) = -1 EEXIST (File exists) [pid 305] mount("binder", "/dev/binderfs", "binder", 0, NULL [pid 311] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 305] <... mount resumed>) = 0 [pid 305] symlink("/dev/binderfs", "./binderfs") = -1 EEXIST (File exists) [pid 305] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 305] close(3 [pid 311] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0./strace-static-x86_64: Process 315 attached [ 21.399949][ T28] audit: type=1400 audit(1692591405.960:73): avc: denied { mount } for pid=302 comm="syz-executor326" name="/" dev="binder" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 ) = 0x7efd4eb6c000 [pid 315] set_robust_list(0x7efd4eb6b9a0, 24 [pid 311] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 305] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557294750) = 2 ./strace-static-x86_64: Process 314 attached [pid 314] set_robust_list(0x7efd4eb8c9a0, 24) = 0 [pid 314] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 314] memfd_create("syzkaller", 0) = 3 [pid 314] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7efd4674b000 [pid 314] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 316 attached [pid 316] set_robust_list(0x555557294760, 24) = 0 [pid 316] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 316] setpgid(0, 0) = 0 [pid 316] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 314] <... write resumed>) = 262144 [pid 316] write(3, "1000", 4) = 4 [pid 316] close(3) = 0 [pid 316] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 316] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, NULL, 8) = 0 [pid 314] munmap(0x7efd4674b000, 262144 [pid 316] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 314] <... munmap resumed>) = 0 [pid 316] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 316] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb6c000 [pid 316] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 316] rt_sigprocmask(SIG_BLOCK, ~[], [pid 314] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 316] <... rt_sigprocmask resumed>[], 8) = 0 [pid 316] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 314] ioctl(4, LOOP_SET_FD, 3 [pid 316] <... clone3 resumed> => {parent_tid=[3]}, 88) = 3 [pid 316] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 316] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 316] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 316] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb4b000 [pid 315] <... set_robust_list resumed>) = 0 [pid 311] <... mprotect resumed>) = 0 [pid 315] rt_sigprocmask(SIG_SETMASK, [], [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [pid 315] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 316] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 315] creat("./bus", 000 [pid 311] <... rt_sigprocmask resumed>[], 8) = 0 [pid 316] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 316] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} => {parent_tid=[4]}, 88) = 4 [pid 316] rt_sigprocmask(SIG_SETMASK, [], [pid 315] <... creat resumed>) = 5 [pid 311] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 316] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 315] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 316] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 315] <... futex resumed>) = 1 [pid 313] <... futex resumed>) = 0 [pid 313] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 313] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 316] <... futex resumed>) = 0 [pid 316] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 315] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 311] <... clone3 resumed> => {parent_tid=[3]}, 88) = 3 ./strace-static-x86_64: Process 317 attached [pid 317] set_robust_list(0x7efd4eb8c9a0, 24) = 0 [pid 317] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 317] memfd_create("syzkaller", 0 [pid 315] <... mount resumed>) = 0 [pid 311] rt_sigprocmask(SIG_SETMASK, [], [pid 317] <... memfd_create resumed>) = 3 [pid 317] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7efd4674b000 [pid 315] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 315] <... futex resumed>) = 1 [pid 313] <... futex resumed>) = 0 [pid 311] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 315] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 313] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... futex resumed>) = 0 [pid 313] <... futex resumed>) = 0 [pid 313] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 311] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 315] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 311] <... futex resumed>) = 0 [pid 315] <... open resumed>) = 6 [pid 311] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 315] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... mmap resumed>) = 0x7efd4eb4b000 [pid 315] <... futex resumed>) = 1 [pid 313] <... futex resumed>) = 0 [pid 311] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 315] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 313] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 313] <... futex resumed>) = 0 [pid 311] <... mprotect resumed>) = 0 [pid 315] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 313] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 315] <... mmap resumed>) = 0x20000000 [pid 311] rt_sigprocmask(SIG_BLOCK, ~[], [pid 315] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] <... rt_sigprocmask resumed>[], 8) = 0 [pid 315] <... futex resumed>) = 1 [pid 313] <... futex resumed>) = 0 [pid 311] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 315] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 313] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 315] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 317] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 320 attached ./strace-static-x86_64: Process 319 attached ./strace-static-x86_64: Process 318 attached [pid 315] memfd_create("syzkaller", 0 [pid 314] <... ioctl resumed>) = 0 [pid 311] <... clone3 resumed> => {parent_tid=[4]}, 88) = 4 [pid 311] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 311] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 311] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 319] set_robust_list(0x7efd4eb8c9a0, 24) = 0 [pid 319] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 319] memfd_create("syzkaller", 0) = 3 [pid 319] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7efd4674b000 [pid 319] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 318] set_robust_list(0x7efd4eb6b9a0, 24) = 0 [pid 318] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 318] creat("./bus", 000) = 4 [pid 318] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 318] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 319] <... write resumed>) = 262144 [pid 319] munmap(0x7efd4674b000, 262144) = 0 [pid 319] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [ 21.426191][ T28] audit: type=1400 audit(1692591405.960:74): avc: denied { read write } for pid=302 comm="syz-executor326" name="loop3" dev="devtmpfs" ino=117 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 21.440612][ T314] loop3: detected capacity change from 0 to 512 [ 21.463636][ T315] I/O error, dev loop3, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 12 prio class 2 [ 21.464493][ T28] audit: type=1400 audit(1692591405.960:75): avc: denied { open } for pid=302 comm="syz-executor326" path="/dev/loop3" dev="devtmpfs" ino=117 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 319] ioctl(4, LOOP_SET_FD, 3 [pid 320] set_robust_list(0x7efd4eb6b9a0, 24 [pid 317] <... write resumed>) = 262144 [pid 316] <... futex resumed>) = 0 [pid 315] <... memfd_create resumed>) = 7 [pid 314] close(3 [pid 306] <... unshare resumed>) = 0 [pid 319] <... ioctl resumed>) = 0 [pid 320] <... set_robust_list resumed>) = 0 [pid 319] close(3 [pid 317] munmap(0x7efd4674b000, 262144 [pid 316] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 315] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 314] <... close resumed>) = 0 [pid 306] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC [pid 320] rt_sigprocmask(SIG_SETMASK, [], [pid 318] <... futex resumed>) = 0 [pid 317] <... munmap resumed>) = 0 [pid 316] <... futex resumed>) = 1 [pid 314] mkdir(0x20000000, 0777 [pid 306] <... openat resumed>) = 3 [pid 318] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 320] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 318] <... mount resumed>) = 0 [pid 317] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 316] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 314] <... mkdir resumed>) = 0 [pid 306] write(3, "0 65535", 7 [pid 318] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 320] creat("./bus", 000 [pid 318] <... futex resumed>) = 0 [pid 317] <... openat resumed>) = 5 [pid 316] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 306] <... write resumed>) = 7 [pid 318] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 314] mount("/dev/loop3", 0x20000000, 0x200005c0, MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"... [pid 320] <... creat resumed>) = 5 [pid 317] ioctl(5, LOOP_SET_FD, 3 [pid 316] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] close(3 [pid 320] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 318] <... futex resumed>) = 0 [pid 316] <... futex resumed>) = 1 [pid 306] <... close resumed>) = 0 [pid 318] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 314] <... mount resumed>) = -1 ENODEV (No such device) [pid 320] <... futex resumed>) = 1 [pid 318] <... open resumed>) = 6 [pid 316] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 314] ioctl(4, LOOP_CLR_FD [pid 311] <... futex resumed>) = 0 [pid 306] mkdir("/dev/binderfs", 0777 [pid 318] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 314] <... ioctl resumed>) = 0 [pid 311] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 318] <... futex resumed>) = 0 [pid 311] <... futex resumed>) = 0 [pid 318] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 311] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 320] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 316] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 306] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 316] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 320] <... mount resumed>) = 0 [pid 318] <... futex resumed>) = 0 [pid 316] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 320] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 318] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 306] mount("binder", "/dev/binderfs", "binder", 0, NULL [pid 320] <... futex resumed>) = 1 [pid 318] <... mmap resumed>) = 0x20000000 [pid 311] <... futex resumed>) = 0 [pid 306] <... mount resumed>) = 0 [pid 320] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 318] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 320] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 318] <... futex resumed>) = 1 [pid 316] <... futex resumed>) = 0 [pid 311] <... futex resumed>) = 0 [pid 320] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 318] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 316] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] symlink("/dev/binderfs", "./binderfs" [pid 320] <... open resumed>) = 6 [pid 318] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 316] <... futex resumed>) = 0 [pid 306] <... symlink resumed>) = -1 EEXIST (File exists) [pid 320] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 320] <... futex resumed>) = 1 [pid 306] <... openat resumed>) = 3 [pid 320] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 306] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557294750) = 2 [pid 315] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 319] <... close resumed>) = 0 [pid 319] mkdir("./file0", 0777 [pid 315] close(7) = 0 [pid 315] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 315] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 319] <... mkdir resumed>) = 0 [pid 317] <... ioctl resumed>) = 0 [pid 317] close(3) = 0 [pid 317] mkdir(0x20000000, 0777 [pid 319] mount("/dev/loop4", "./file0", "ext4", MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "nodiscard,barrier,nouid32,grpquota,,errors=continue" [pid 314] close(4) = 0 [pid 314] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 314] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 313] close(3) = -1 EBADF (Bad file descriptor) [pid 313] close(4) = -1 EBADF (Bad file descriptor) [pid 313] close(5) = 0 [pid 313] close(6) = 0 ./strace-static-x86_64: Process 321 attached [pid 318] memfd_create("syzkaller", 0 [pid 317] <... mkdir resumed>) = -1 ENOENT (No such file or directory) [pid 313] close(7 [pid 311] <... futex resumed>) = 0 [pid 303] <... unshare resumed>) = 0 [pid 301] <... unshare resumed>) = 0 [pid 321] set_robust_list(0x555557294760, 24 [pid 318] <... memfd_create resumed>) = 3 [pid 317] mount("/dev/loop2", 0x20000000, 0x200005c0, MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"... [pid 311] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC [pid 301] openat(AT_FDCWD, "/proc/sys/net/ipv4/ping_group_range", O_WRONLY|O_CLOEXEC [pid 321] <... set_robust_list resumed>) = 0 [pid 320] <... futex resumed>) = 0 [pid 318] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 317] <... mount resumed>) = -1 ENODEV (No such device) [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... futex resumed>) = 1 [pid 303] <... openat resumed>) = 3 [pid 301] <... openat resumed>) = 3 [pid 321] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 318] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 317] ioctl(5, LOOP_CLR_FD [pid 311] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 303] write(3, "0 65535", 7 [pid 301] write(3, "0 65535", 7 [pid 321] <... prctl resumed>) = 0 [pid 318] close(3 [pid 317] <... ioctl resumed>) = 0 [pid 303] <... write resumed>) = 7 [pid 301] <... write resumed>) = 7 [pid 321] setpgid(0, 0 [pid 318] <... close resumed>) = 0 [pid 317] close(5 [pid 303] close(3 [pid 301] close(3 [pid 321] <... setpgid resumed>) = 0 [pid 320] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 318] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 317] <... close resumed>) = 0 [pid 303] <... close resumed>) = 0 [pid 301] <... close resumed>) = 0 [pid 321] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 320] <... mmap resumed>) = 0x20000000 [pid 318] <... futex resumed>) = 0 [pid 317] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 313] close(8 [pid 303] mkdir("/dev/binderfs", 0777 [pid 301] mkdir("/dev/binderfs", 0777 [pid 321] <... openat resumed>) = 3 [pid 320] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 318] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 317] <... futex resumed>) = 0 [pid 316] close(3 [pid 303] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 301] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 321] write(3, "1000", 4 [pid 320] <... futex resumed>) = 1 [pid 317] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 316] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... futex resumed>) = 0 [pid 303] mount("binder", "/dev/binderfs", "binder", 0, NULL [pid 301] mount("binder", "/dev/binderfs", "binder", 0, NULL [pid 321] <... write resumed>) = 4 [pid 320] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 316] close(4 [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 303] <... mount resumed>) = 0 [pid 301] <... mount resumed>) = 0 [pid 321] close(3 [pid 320] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 316] <... close resumed>) = 0 [pid 311] <... futex resumed>) = 0 [pid 303] symlink("/dev/binderfs", "./binderfs" [pid 301] symlink("/dev/binderfs", "./binderfs" [pid 321] <... close resumed>) = 0 [pid 320] memfd_create("syzkaller", 0 [pid 316] close(5 [pid 313] close(9 [pid 303] <... symlink resumed>) = -1 EEXIST (File exists) [pid 301] <... symlink resumed>) = -1 EEXIST (File exists) [pid 321] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 320] <... memfd_create resumed>) = 3 [pid 316] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 303] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 301] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 321] <... futex resumed>) = 0 [pid 320] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 316] close(6 [pid 313] close(10 [pid 303] <... openat resumed>) = 3 [pid 301] <... openat resumed>) = 3 [pid 321] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 320] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 316] <... close resumed>) = 0 [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 303] ioctl(3, LOOP_CLR_FD [pid 301] ioctl(3, LOOP_CLR_FD [pid 321] <... rt_sigaction resumed>NULL, 8) = 0 [pid 320] close(3 [pid 316] close(7 [pid 313] close(11 [pid 303] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 301] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 321] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 320] <... close resumed>) = 0 [pid 316] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 303] close(3 [pid 301] close(3 [pid 321] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 320] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 316] close(8 [pid 313] close(12 [pid 303] <... close resumed>) = 0 [pid 301] <... close resumed>) = 0 [pid 321] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 320] <... futex resumed>) = 0 [pid 316] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 301] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 321] <... mmap resumed>) = 0x7efd4eb6c000 [pid 320] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 316] close(9 [pid 313] close(13 [pid 321] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 316] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 303] <... clone resumed>, child_tidptr=0x555557294750) = 2 [pid 301] <... clone resumed>, child_tidptr=0x555557294750) = 2 [pid 321] <... mprotect resumed>) = 0 [pid 316] close(10 [pid 313] close(14 [pid 321] rt_sigprocmask(SIG_BLOCK, ~[], [pid 316] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] <... rt_sigprocmask resumed>[], 8) = 0 [pid 316] close(11 [pid 313] close(15 [pid 321] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 316] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 316] close(12 [pid 313] close(16 [pid 321] <... clone3 resumed> => {parent_tid=[3]}, 88) = 3 [pid 316] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] rt_sigprocmask(SIG_SETMASK, [], [pid 316] close(13 [pid 313] close(17 [pid 321] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 316] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 316] close(14 [pid 313] close(18 [pid 321] <... futex resumed>) = 0 [pid 316] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 316] close(15 [pid 313] close(19 [pid 321] <... futex resumed>) = 0 [pid 316] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 316] close(16 [pid 321] <... mmap resumed>) = 0x7efd4eb4b000 [pid 316] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 316] close(17 [pid 321] <... mprotect resumed>) = 0 [pid 316] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] rt_sigprocmask(SIG_BLOCK, ~[], [pid 316] close(18 [pid 321] <... rt_sigprocmask resumed>[], 8) = 0 [pid 316] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 316] close(19) = -1 EBADF (Bad file descriptor) [pid 321] <... clone3 resumed> => {parent_tid=[4]}, 88) = 4 [pid 316] close(20 [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] rt_sigprocmask(SIG_SETMASK, [], [pid 316] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 313] close(20 [pid 321] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 316] close(21 [pid 321] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 316] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] <... futex resumed>) = 0 [pid 316] close(22 [pid 321] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 316] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 316] close(23) = -1 EBADF (Bad file descriptor) [pid 316] close(24) = -1 EBADF (Bad file descriptor) [pid 316] close(25) = -1 EBADF (Bad file descriptor) [pid 316] close(26) = -1 EBADF (Bad file descriptor) [pid 316] close(27) = -1 EBADF (Bad file descriptor) [pid 316] close(28./strace-static-x86_64: Process 325 attached ) = -1 EBADF (Bad file descriptor) [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) ./strace-static-x86_64: Process 327 attached [pid 325] set_robust_list(0x555557294760, 24 [pid 316] close(29 [pid 313] close(21 [pid 327] set_robust_list(0x7efd4eb8c9a0, 24 [pid 325] <... set_robust_list resumed>) = 0 [pid 316] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 327] <... set_robust_list resumed>) = 0 [pid 325] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 316] exit_group(0 [pid 313] close(22 [pid 327] rt_sigprocmask(SIG_SETMASK, [], [pid 325] <... prctl resumed>) = 0 [pid 318] <... futex resumed>) = ? [pid 317] <... futex resumed>) = ? [pid 316] <... exit_group resumed>) = ? [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 327] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 325] setpgid(0, 0 [pid 318] +++ exited with 0 +++ [pid 317] +++ exited with 0 +++ [ 21.486591][ T319] loop4: detected capacity change from 0 to 512 [ 21.509348][ T314] request_module fs- succeeded, but still no fs? [ 21.509500][ T317] loop2: detected capacity change from 0 to 512 [ 21.525927][ T318] I/O error, dev loop2, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 8 prio class 2 [pid 313] close(23./strace-static-x86_64: Process 328 attached ./strace-static-x86_64: Process 326 attached [pid 327] memfd_create("syzkaller", 0 [pid 325] <... setpgid resumed>) = 0 [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 328] set_robust_list(0x7efd4eb6b9a0, 24 [pid 327] <... memfd_create resumed>) = 3 [pid 326] set_robust_list(0x555557294760, 24 [pid 325] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 316] +++ exited with 0 +++ [pid 313] close(24 [pid 328] <... set_robust_list resumed>) = 0 [pid 327] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 326] <... set_robust_list resumed>) = 0 [pid 325] <... openat resumed>) = 3 [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 328] rt_sigprocmask(SIG_SETMASK, [], [pid 327] <... mmap resumed>) = 0x7efd4674b000 [pid 326] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 325] write(3, "1000", 4 [pid 313] close(25 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 328] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 326] <... prctl resumed>) = 0 [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 305] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 328] creat("./bus", 000 [pid 326] setpgid(0, 0 [pid 313] close(26 [pid 305] <... openat resumed>) = 3 [pid 328] <... creat resumed>) = 4 [pid 326] <... setpgid resumed>) = 0 [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 305] ioctl(3, LOOP_CLR_FD [pid 328] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 326] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 313] close(27 [pid 305] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 328] <... futex resumed>) = 1 [pid 326] <... openat resumed>) = 3 [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 305] close(3 [pid 328] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 326] write(3, "1000", 4 [pid 313] close(28 [pid 305] <... close resumed>) = 0 [pid 326] <... write resumed>) = 4 [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 326] close(3 [pid 313] close(29 [pid 326] <... close resumed>) = 0 [pid 313] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 305] <... clone resumed>, child_tidptr=0x555557294750) = 5 [pid 326] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 313] exit_group(0 [pid 326] <... futex resumed>) = 0 [pid 315] <... futex resumed>) = ? [pid 314] <... futex resumed>) = ? [pid 313] <... exit_group resumed>) = ? [pid 326] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 315] +++ exited with 0 +++ [pid 314] +++ exited with 0 +++ [pid 326] <... rt_sigaction resumed>NULL, 8) = 0 [pid 326] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 326] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb6c000 [pid 326] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 326] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 326] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} => {parent_tid=[3]}, 88) = 3 [pid 326] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 326] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 321] <... futex resumed>) = 0 [pid 327] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 326] <... futex resumed>) = 0 [pid 325] <... write resumed>) = 4 [pid 321] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 313] +++ exited with 0 +++ [pid 328] <... futex resumed>) = 0 [pid 326] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 325] close(3 [pid 321] <... futex resumed>) = 1 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- [pid 328] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 326] <... futex resumed>) = 0 [pid 325] <... close resumed>) = 0 [pid 321] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 328] <... mount resumed>) = 0 [pid 327] <... write resumed>) = 262144 [pid 326] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 325] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 326] <... mmap resumed>) = 0x7efd4eb4b000 [pid 302] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 326] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 302] <... openat resumed>) = 3 [pid 326] <... mprotect resumed>) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 326] rt_sigprocmask(SIG_BLOCK, ~[], [pid 302] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 326] <... rt_sigprocmask resumed>[], 8) = 0 [pid 302] close(3 [pid 326] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 328] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] <... close resumed>) = 0 [pid 328] <... futex resumed>) = 1 [pid 327] munmap(0x7efd4674b000, 262144 [pid 325] <... futex resumed>) = 0 [pid 321] <... futex resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 328] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 327] <... munmap resumed>) = 0 [pid 326] <... clone3 resumed> => {parent_tid=[4]}, 88) = 4 [pid 325] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 321] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 328] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 327] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 326] rt_sigprocmask(SIG_SETMASK, [], [pid 325] <... rt_sigaction resumed>NULL, 8) = 0 [pid 321] <... futex resumed>) = 0 [pid 302] <... clone resumed>, child_tidptr=0x555557294750) = 8 [pid 328] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 327] <... openat resumed>) = 5 [pid 326] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 325] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 321] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 329 attached [pid 328] <... open resumed>) = 6 [pid 327] ioctl(5, LOOP_SET_FD, 3 [pid 326] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 325] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 328] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 326] <... futex resumed>) = 0 [pid 326] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 330 attached [pid 330] set_robust_list(0x7efd4eb8c9a0, 24) = 0 [pid 330] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 330] memfd_create("syzkaller", 0) = 3 [pid 330] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7efd4674b000 ./strace-static-x86_64: Process 331 attached [pid 325] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb6c000 [pid 328] <... futex resumed>) = 1 [pid 321] <... futex resumed>) = 0 [pid 328] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 325] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 321] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 329] set_robust_list(0x555557294760, 24 [pid 328] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 329] <... set_robust_list resumed>) = 0 [pid 328] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 325] <... mprotect resumed>) = 0 [pid 321] <... futex resumed>) = 0 [pid 328] <... mmap resumed>) = 0x20000000 [pid 321] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 328] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 325] rt_sigprocmask(SIG_BLOCK, ~[], [pid 321] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 329] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 328] <... futex resumed>) = 0 [pid 325] <... rt_sigprocmask resumed>[], 8) = 0 [ 21.565732][ T319] EXT4-fs (loop4): revision level too high, forcing read-only mode [ 21.578073][ T319] EXT4-fs error (device loop4): ext4_init_orphan_info:586: comm syz-executor326: inode #0: comm syz-executor326: iget: illegal inode # [ 21.602483][ T327] loop1: detected capacity change from 0 to 512 [ 21.610448][ T319] EXT4-fs (loop4): get orphan inode failed [pid 321] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 331] set_robust_list(0x7efd4eb6b9a0, 24) = 0 [pid 331] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 331] creat("./bus", 000) = 4 [pid 331] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 326] <... futex resumed>) = 0 [pid 326] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 326] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 331] <... futex resumed>) = 1 [pid 331] mount("/dev/loop5", "./bus", NULL, MS_BIND, NULL) = 0 [pid 331] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 326] <... futex resumed>) = 0 [pid 326] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 326] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 331] <... futex resumed>) = 1 [pid 331] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c) = 5 [pid 331] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 326] <... futex resumed>) = 0 [pid 326] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 326] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 331] <... futex resumed>) = 1 [pid 331] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 5, 0) = 0x20000000 [pid 331] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 326] <... futex resumed>) = 0 [pid 326] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 331] <... futex resumed>) = 1 [pid 331] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20000000} --- [pid 331] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20000140} --- [pid 331] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x200000c0} --- [pid 331] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x200000f6} --- [pid 331] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20000108} --- [pid 331] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x20000280} --- [pid 331] memfd_create("syzkaller", 0) = 6 [pid 321] <... futex resumed>) = 0 [pid 325] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} => {parent_tid=[3]}, 88) = 3 [pid 325] rt_sigprocmask(SIG_SETMASK, [], [pid 331] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 325] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 331] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 325] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 331] close(6 [pid 325] <... futex resumed>) = 0 [pid 331] <... close resumed>) = 0 [pid 325] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 329] <... prctl resumed>) = 0 [pid 325] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb4b000 [pid 331] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 325] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 331] <... futex resumed>) = 0 [pid 331] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 325] <... mprotect resumed>) = 0 [pid 325] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 329] setpgid(0, 0 [pid 325] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 330] --- SIGBUS {si_signo=SIGBUS, si_code=BUS_ADRERR, si_addr=0x200013b1} --- [pid 329] <... setpgid resumed>) = 0 [pid 325] <... clone3 resumed> => {parent_tid=[4]}, 88) = 4 [pid 325] rt_sigprocmask(SIG_SETMASK, [], [pid 330] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 325] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 325] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 330] <... futex resumed>) = 0 [pid 329] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 325] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 326] close(3) = 0 [pid 330] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 326] close(4./strace-static-x86_64: Process 334 attached ./strace-static-x86_64: Process 333 attached ./strace-static-x86_64: Process 332 attached [pid 329] <... openat resumed>) = 3 [pid 328] memfd_create("syzkaller", 0 [pid 327] <... ioctl resumed>) = 0 [pid 326] <... close resumed>) = 0 [pid 334] set_robust_list(0x7efd4eb6b9a0, 24 [pid 333] set_robust_list(0x7efd4eb8c9a0, 24 [pid 332] set_robust_list(0x555557294760, 24 [pid 329] write(3, "1000", 4 [pid 328] <... memfd_create resumed>) = 7 [pid 327] close(3 [pid 326] close(5 [pid 334] <... set_robust_list resumed>) = 0 [pid 333] <... set_robust_list resumed>) = 0 [pid 332] <... set_robust_list resumed>) = 0 [pid 328] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 327] <... close resumed>) = 0 [pid 326] <... close resumed>) = 0 [pid 334] rt_sigprocmask(SIG_SETMASK, [], [pid 333] rt_sigprocmask(SIG_SETMASK, [], [pid 332] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 328] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 327] mkdir(0x20000000, 0777 [pid 326] close(6 [pid 334] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 333] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 332] <... prctl resumed>) = 0 [pid 328] close(7 [pid 327] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 334] creat("./bus", 000 [pid 333] memfd_create("syzkaller", 0 [pid 332] setpgid(0, 0 [pid 328] <... close resumed>) = 0 [pid 326] close(7 [pid 334] <... creat resumed>) = 3 [pid 333] <... memfd_create resumed>) = 4 [pid 332] <... setpgid resumed>) = 0 [pid 328] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 334] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 333] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 332] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 328] <... futex resumed>) = 0 [pid 327] mount("/dev/loop1", 0x20000000, 0x200005c0, MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"... [pid 326] close(8 [pid 334] <... futex resumed>) = 1 [pid 333] <... mmap resumed>) = 0x7efd4674b000 [pid 332] <... openat resumed>) = 3 [pid 328] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 327] <... mount resumed>) = -1 ENODEV (No such device) [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 325] <... futex resumed>) = 0 [pid 319] <... mount resumed>) = -1 EUCLEAN (Structure needs cleaning) [pid 334] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 333] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 332] write(3, "1000", 4 [pid 327] ioctl(5, LOOP_CLR_FD [pid 326] close(9 [pid 325] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 319] ioctl(4, LOOP_CLR_FD [pid 334] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 333] <... write resumed>) = 262144 [pid 332] <... write resumed>) = 4 [pid 329] <... write resumed>) = 4 [pid 327] <... ioctl resumed>) = 0 [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 325] <... futex resumed>) = 0 [pid 319] <... ioctl resumed>) = 0 [pid 334] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 333] munmap(0x7efd4674b000, 262144 [pid 332] close(3 [pid 327] close(5 [pid 326] close(10 [pid 325] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 319] close(4 [pid 334] <... mount resumed>) = 0 [pid 333] <... munmap resumed>) = 0 [pid 332] <... close resumed>) = 0 [pid 329] close(3 [pid 327] <... close resumed>) = 0 [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 319] <... close resumed>) = 0 [pid 334] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 333] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 332] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 327] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 326] close(11 [pid 321] close(3 [pid 319] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 311] close(3 [pid 334] <... futex resumed>) = 1 [pid 333] <... openat resumed>) = 5 [pid 332] <... futex resumed>) = 0 [pid 329] <... close resumed>) = 0 [pid 327] <... futex resumed>) = 0 [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 325] <... futex resumed>) = 0 [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 319] <... futex resumed>) = 0 [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 334] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 333] ioctl(5, LOOP_SET_FD, 4 [pid 332] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 329] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 327] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 326] close(12 [pid 325] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 321] close(4 [pid 319] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 311] close(4 [pid 334] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 332] <... rt_sigaction resumed>NULL, 8) = 0 [pid 329] <... futex resumed>) = 0 [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 325] <... futex resumed>) = 0 [pid 321] <... close resumed>) = 0 [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 334] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 332] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 329] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 326] close(13 [pid 325] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 321] close(5 [pid 311] close(5 [pid 334] <... open resumed>) = 6 [pid 332] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 334] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 332] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 329] <... rt_sigaction resumed>NULL, 8) = 0 [pid 326] close(14 [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = 0 [pid 334] <... futex resumed>) = 1 [pid 332] <... mmap resumed>) = 0x7efd4eb6c000 [pid 329] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 325] <... futex resumed>) = 0 [pid 321] close(6 [pid 311] close(6 [pid 334] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 332] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 329] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 326] close(15 [pid 325] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 321] <... close resumed>) = 0 [pid 311] <... close resumed>) = 0 [pid 334] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 332] <... mprotect resumed>) = 0 [ 21.610584][ T328] I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 22 prio class 2 [ 21.629704][ T319] EXT4-fs (loop4): mount failed [pid 329] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 325] <... futex resumed>) = 0 [pid 321] close(7 [pid 311] close(7 [pid 334] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 332] rt_sigprocmask(SIG_BLOCK, ~[], [pid 329] <... mmap resumed>) = 0x7efd4eb6c000 [pid 326] close(16 [pid 325] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 334] <... mmap resumed>) = 0x20000000 [pid 332] <... rt_sigprocmask resumed>[], 8) = 0 [pid 329] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 334] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 333] <... ioctl resumed>) = 0 [pid 332] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 326] close(17 [pid 321] close(8 [pid 311] close(8 [pid 329] <... mprotect resumed>) = 0 [pid 334] <... futex resumed>) = 1 [pid 333] close(4 [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 325] <... futex resumed>) = 0 [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 334] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 333] <... close resumed>) = 0 [pid 332] <... clone3 resumed> => {parent_tid=[9]}, 88) = 9 [pid 329] rt_sigprocmask(SIG_BLOCK, ~[], [pid 326] close(18 [pid 325] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 321] close(9 [pid 311] close(9 [pid 334] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 333] mkdir(0x20000000, 0777 [pid 332] rt_sigprocmask(SIG_SETMASK, [], [pid 329] <... rt_sigprocmask resumed>[], 8) = 0 [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 325] <... futex resumed>) = 0 [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 334] memfd_create("syzkaller", 0 [pid 333] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 332] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 329] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 326] close(19 [pid 321] close(10 [pid 311] close(10 [pid 334] <... memfd_create resumed>) = 4 [pid 333] mount("/dev/loop0", 0x20000000, 0x200005c0, MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"... [pid 332] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 334] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 333] <... mount resumed>) = -1 ENODEV (No such device) [pid 332] <... futex resumed>) = 0 [pid 329] <... clone3 resumed> => {parent_tid=[6]}, 88) = 6 [pid 326] close(20 [pid 321] close(11 [pid 311] close(11 [pid 334] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 333] ioctl(5, LOOP_CLR_FD [pid 332] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 329] rt_sigprocmask(SIG_SETMASK, [], [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 334] close(4 [pid 333] <... ioctl resumed>) = 0 [pid 332] <... futex resumed>) = 0 [pid 329] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 326] close(21 [pid 321] close(12 [pid 311] close(12./strace-static-x86_64: Process 336 attached [pid 334] <... close resumed>) = 0 [pid 333] close(5 [pid 332] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 329] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 334] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 333] <... close resumed>) = 0 [pid 332] <... mmap resumed>) = 0x7efd4eb4b000 [pid 329] <... futex resumed>) = 0 [pid 326] close(22 [pid 321] close(13 [pid 311] close(13 [pid 336] set_robust_list(0x7efd4eb8c9a0, 24 [pid 334] <... futex resumed>) = 0 [pid 333] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 332] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 329] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 336] <... set_robust_list resumed>) = 0 [pid 334] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 333] <... futex resumed>) = 0 [pid 332] <... mprotect resumed>) = 0 [pid 329] <... futex resumed>) = 0 [pid 326] close(23 [pid 321] close(14 [pid 311] close(14./strace-static-x86_64: Process 337 attached [pid 336] rt_sigprocmask(SIG_SETMASK, [], [pid 333] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 332] rt_sigprocmask(SIG_BLOCK, ~[], [pid 329] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 325] close(3 [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 337] set_robust_list(0x7efd4eb8c9a0, 24 [pid 336] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 332] <... rt_sigprocmask resumed>[], 8) = 0 [pid 329] <... mmap resumed>) = 0x7efd4eb4b000 [pid 326] close(24 [pid 325] <... close resumed>) = 0 [pid 321] close(15 [pid 311] close(15 [pid 337] <... set_robust_list resumed>) = 0 [pid 336] memfd_create("syzkaller", 0 [pid 332] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 329] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 325] close(4 [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 337] rt_sigprocmask(SIG_SETMASK, [], [pid 336] <... memfd_create resumed>) = 3 [pid 329] <... mprotect resumed>) = 0 [pid 326] close(25 [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] close(16 [pid 311] close(16 [pid 337] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 336] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 332] <... clone3 resumed> => {parent_tid=[10]}, 88) = 10 [pid 329] rt_sigprocmask(SIG_BLOCK, ~[], [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 325] close(5 [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 337] memfd_create("syzkaller", 0 [pid 336] <... mmap resumed>) = 0x7efd4674b000 [pid 332] rt_sigprocmask(SIG_SETMASK, [], [pid 329] <... rt_sigprocmask resumed>[], 8) = 0 [pid 326] close(26 [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] close(17 [pid 311] close(17 [pid 337] <... memfd_create resumed>) = 3 [pid 332] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 329] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 325] close(6 [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 337] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 336] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 332] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 326] close(27 [pid 325] <... close resumed>) = 0 [pid 321] close(18 [pid 311] close(18 [pid 337] <... mmap resumed>) = 0x7efd4674b000 [pid 332] <... futex resumed>) = 0 [pid 329] <... clone3 resumed> => {parent_tid=[7]}, 88) = 7 [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 325] close(7 [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) ./strace-static-x86_64: Process 338 attached [pid 337] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 336] <... write resumed>) = 262144 [pid 332] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 329] rt_sigprocmask(SIG_SETMASK, [], [pid 326] close(28 [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] close(19 [pid 311] close(19./strace-static-x86_64: Process 339 attached [pid 338] set_robust_list(0x7efd4eb6b9a0, 24 [pid 337] <... write resumed>) = 262144 [pid 336] munmap(0x7efd4674b000, 262144 [pid 329] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 325] close(8 [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 339] set_robust_list(0x7efd4eb6b9a0, 24 [pid 338] <... set_robust_list resumed>) = 0 [pid 337] munmap(0x7efd4674b000, 262144 [pid 336] <... munmap resumed>) = 0 [pid 329] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 326] close(29 [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] close(20 [pid 311] close(20 [pid 339] <... set_robust_list resumed>) = 0 [pid 338] rt_sigprocmask(SIG_SETMASK, [], [pid 337] <... munmap resumed>) = 0 [pid 336] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 329] <... futex resumed>) = 0 [pid 326] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 325] close(9 [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 339] rt_sigprocmask(SIG_SETMASK, [], [pid 338] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 337] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 336] <... openat resumed>) = 4 [pid 329] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 326] exit_group(0 [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] close(21 [pid 311] close(21 [pid 339] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 338] creat("./bus", 000 [pid 337] <... openat resumed>) = 4 [pid 336] ioctl(4, LOOP_SET_FD, 3 [pid 331] <... futex resumed>) = ? [pid 330] <... futex resumed>) = ? [pid 326] <... exit_group resumed>) = ? [pid 325] close(10 [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 339] creat("./bus", 000 [pid 338] <... creat resumed>) = 5 [pid 337] ioctl(4, LOOP_SET_FD, 3 [pid 330] +++ exited with 0 +++ [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] close(22 [pid 311] close(22 [pid 339] <... creat resumed>) = 5 [pid 338] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 337] <... ioctl resumed>) = 0 [pid 336] <... ioctl resumed>) = 0 [pid 331] +++ exited with 0 +++ [pid 326] +++ exited with 0 +++ [pid 325] close(11 [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 339] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] <... futex resumed>) = 1 [pid 337] close(3 [pid 336] close(3 [pid 332] <... futex resumed>) = 0 [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] close(23 [pid 311] close(23 [pid 339] <... futex resumed>) = 1 [pid 338] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 337] <... close resumed>) = 0 [pid 336] <... close resumed>) = 0 [pid 332] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 329] <... futex resumed>) = 0 [pid 325] close(12 [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 339] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 338] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 337] mkdir("./file0", 0777 [pid 336] mkdir("./file0", 0777 [pid 332] <... futex resumed>) = 0 [pid 329] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] close(24 [pid 311] close(24 [pid 301] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 339] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 338] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 337] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 336] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 332] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 329] <... futex resumed>) = 0 [pid 325] close(13 [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 339] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 338] <... mount resumed>) = 0 [pid 337] mount("/dev/loop2", "./file0", "ext4", MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "nodiscard,barrier,nouid32,grpquota,,errors=continue" [pid 336] mount("/dev/loop3", "./file0", "ext4", MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "nodiscard,barrier,nouid32,grpquota,,errors=continue" [pid 329] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] close(25 [pid 311] close(25 [pid 301] <... openat resumed>) = 3 [pid 339] <... mount resumed>) = 0 [pid 338] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 325] close(14 [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] ioctl(3, LOOP_CLR_FD [pid 339] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] <... futex resumed>) = 1 [pid 332] <... futex resumed>) = 0 [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] close(26 [pid 311] close(26 [pid 301] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 339] <... futex resumed>) = 1 [pid 338] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 332] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 329] <... futex resumed>) = 0 [pid 325] close(15 [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 339] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 338] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 332] <... futex resumed>) = 0 [pid 329] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] close(27 [pid 311] close(27 [pid 301] close(3 [pid 339] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 338] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 332] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 329] <... futex resumed>) = 0 [pid 325] close(16 [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 329] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] close(28 [pid 311] close(28 [pid 301] <... close resumed>) = 0 [pid 325] close(17 [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 339] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 338] <... open resumed>) = 3 [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] close(29 [pid 311] close(29./strace-static-x86_64: Process 344 attached [pid 339] <... open resumed>) = 3 [pid 338] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] set_robust_list(0x555557294760, 24 [pid 339] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] <... futex resumed>) = 1 [pid 332] <... futex resumed>) = 0 [pid 344] <... set_robust_list resumed>) = 0 [pid 339] <... futex resumed>) = 1 [pid 338] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 332] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 329] <... futex resumed>) = 0 [pid 344] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 339] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 338] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 332] <... futex resumed>) = 0 [pid 329] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] <... prctl resumed>) = 0 [pid 339] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [ 21.657674][ T333] loop0: detected capacity change from 0 to 512 [ 21.688195][ T336] loop3: detected capacity change from 0 to 512 [ 21.688591][ T337] loop2: detected capacity change from 0 to 512 [pid 338] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 3, 0 [pid 332] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 329] <... futex resumed>) = 0 [pid 344] setpgid(0, 0 [pid 339] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 3, 0 [pid 338] <... mmap resumed>) = 0x20000000 [pid 329] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 325] close(18 [pid 321] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 311] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] <... clone resumed>, child_tidptr=0x555557294750) = 5 [pid 344] <... setpgid resumed>) = 0 [pid 339] <... mmap resumed>) = 0x20000000 [pid 338] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 338] <... futex resumed>) = 1 [pid 332] <... futex resumed>) = 0 [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] exit_group(0 [pid 311] exit_group(0 [pid 344] <... openat resumed>) = 3 [pid 338] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 332] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] write(3, "1000", 4 [pid 338] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 332] <... futex resumed>) = 0 [pid 344] <... write resumed>) = 4 [pid 338] memfd_create("syzkaller", 0 [pid 344] close(3 [pid 338] <... memfd_create resumed>) = 6 [pid 344] <... close resumed>) = 0 [pid 338] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 344] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 344] <... futex resumed>) = 0 [pid 338] close(6 [pid 344] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 338] <... close resumed>) = 0 [pid 344] <... rt_sigaction resumed>NULL, 8) = 0 [pid 338] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 338] <... futex resumed>) = 0 [pid 344] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 338] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 344] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb6c000 [pid 344] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 344] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 344] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} => {parent_tid=[6]}, 88) = 6 [pid 344] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 344] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 344] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 344] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb4b000 [pid 344] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 339] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] <... mprotect resumed>) = 0 [pid 339] <... futex resumed>) = 1 [pid 329] <... futex resumed>) = 0 [pid 344] rt_sigprocmask(SIG_BLOCK, ~[], [pid 339] memfd_create("syzkaller", 0 [pid 329] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] <... rt_sigprocmask resumed>[], 8) = 0 [pid 339] <... memfd_create resumed>) = 6 [pid 329] <... futex resumed>) = 0 [pid 344] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 339] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1 ENOMEM (Cannot allocate memory) [pid 344] <... clone3 resumed> => {parent_tid=[7]}, 88) = 7 [pid 339] close(6 [pid 344] rt_sigprocmask(SIG_SETMASK, [], [pid 339] <... close resumed>) = 0 [pid 344] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 344] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 339] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] <... futex resumed>) = 0 [pid 339] <... futex resumed>) = 0 [pid 344] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 339] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 346 attached [pid 346] set_robust_list(0x7efd4eb8c9a0, 24) = 0 [pid 346] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 346] memfd_create("syzkaller", 0) = 3 [pid 346] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7efd4674b000 [pid 328] <... futex resumed>) = ? [pid 327] <... futex resumed>) = ? [pid 325] close(19 [pid 321] <... exit_group resumed>) = ? [pid 320] <... futex resumed>) = ? [pid 319] <... futex resumed>) = ? [pid 311] <... exit_group resumed>) = ? [pid 328] +++ exited with 0 +++ [pid 327] +++ exited with 0 +++ [pid 320] +++ exited with 0 +++ [pid 319] +++ exited with 0 +++ ./strace-static-x86_64: Process 347 attached [pid 346] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 321] +++ exited with 0 +++ [pid 311] +++ exited with 0 +++ [pid 347] set_robust_list(0x7efd4eb6b9a0, 24 [pid 325] close(20 [pid 347] <... set_robust_list resumed>) = 0 [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 347] rt_sigprocmask(SIG_SETMASK, [], [pid 325] close(21 [pid 347] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 347] creat("./bus", 000 [pid 346] <... write resumed>) = 262144 [pid 325] close(22 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=4} --- [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=5} --- [pid 347] <... creat resumed>) = 4 [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 347] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 325] close(23 [pid 347] <... futex resumed>) = 1 [pid 344] <... futex resumed>) = 0 [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 347] mount("/dev/loop5", "./bus", NULL, MS_BIND, NULL [pid 344] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 325] close(24 [pid 306] <... openat resumed>) = 3 [pid 347] <... mount resumed>) = 0 [pid 344] <... futex resumed>) = 0 [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] ioctl(3, LOOP_CLR_FD [pid 304] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 347] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 346] munmap(0x7efd4674b000, 262144 [pid 344] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 325] close(25 [pid 306] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 304] <... openat resumed>) = 3 [pid 347] <... futex resumed>) = 0 [pid 346] <... munmap resumed>) = 0 [pid 344] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] close(3 [pid 304] ioctl(3, LOOP_CLR_FD [pid 347] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 346] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 344] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 325] close(26 [pid 306] <... close resumed>) = 0 [pid 304] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 347] <... open resumed>) = 5 [pid 346] <... openat resumed>) = 6 [pid 344] <... futex resumed>) = 0 [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 304] close(3 [pid 347] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 346] ioctl(6, LOOP_SET_FD, 3 [pid 344] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 325] close(27 [pid 347] <... futex resumed>) = 0 [pid 344] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 304] <... close resumed>) = 0 [pid 347] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 344] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 325] close(28 [pid 306] <... clone resumed>, child_tidptr=0x555557294750) = 5 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 347] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 344] <... futex resumed>) = 0 [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 347] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 5, 0 [pid 325] close(29 [pid 347] <... mmap resumed>) = 0x20000000 [pid 325] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 347] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 325] exit_group(0 [pid 347] <... futex resumed>) = 0 [pid 344] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 333] <... futex resumed>) = ? [pid 325] <... exit_group resumed>) = ? [pid 347] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 344] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 334] <... futex resumed>) = ? [pid 333] +++ exited with 0 +++ [pid 304] <... clone resumed>, child_tidptr=0x555557294750) = 5 [pid 347] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [ 21.713779][ T337] EXT4-fs (loop2): mounted filesystem without journal. Quota mode: writeback. [ 21.723121][ T336] EXT4-fs (loop3): mounted filesystem without journal. Quota mode: writeback. [ 21.741452][ T346] loop5: detected capacity change from 0 to 512 [ 21.750176][ T347] I/O error, dev loop5, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 29 prio class 2 [pid 344] <... futex resumed>) = 0 ./strace-static-x86_64: Process 349 attached ./strace-static-x86_64: Process 348 attached [pid 334] +++ exited with 0 +++ [pid 325] +++ exited with 0 +++ [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=2, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 303] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 303] close(3) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557294750) = 5 [pid 346] <... ioctl resumed>) = 0 [pid 346] close(3) = 0 [pid 346] mkdir(0x20000000, 0777./strace-static-x86_64: Process 350 attached [pid 349] set_robust_list(0x555557294760, 24 [pid 348] set_robust_list(0x555557294760, 24 [pid 350] set_robust_list(0x555557294760, 24 [pid 349] <... set_robust_list resumed>) = 0 [pid 348] <... set_robust_list resumed>) = 0 [pid 347] memfd_create("syzkaller", 0 [pid 346] <... mkdir resumed>) = -1 ENOENT (No such file or directory) [pid 347] <... memfd_create resumed>) = 3 [pid 348] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 347] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 349] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 347] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 348] <... prctl resumed>) = 0 [pid 349] <... prctl resumed>) = 0 [pid 347] close(3 [pid 346] mount("/dev/loop5", 0x20000000, 0x200005c0, MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"... [pid 350] <... set_robust_list resumed>) = 0 [pid 349] setpgid(0, 0 [pid 348] setpgid(0, 0 [pid 347] <... close resumed>) = 0 [pid 346] <... mount resumed>) = -1 ENODEV (No such device) [pid 347] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 346] ioctl(6, LOOP_CLR_FD [pid 347] <... futex resumed>) = 0 [pid 346] <... ioctl resumed>) = 0 [pid 349] <... setpgid resumed>) = 0 [pid 348] <... setpgid resumed>) = 0 [pid 347] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 346] close(6) = 0 [pid 346] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 346] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 348] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 349] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 348] <... openat resumed>) = 3 [pid 344] close(3 [pid 349] <... openat resumed>) = 3 [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] write(3, "1000", 4 [pid 348] write(3, "1000", 4 [pid 336] <... mount resumed>) = 0 [pid 336] openat(AT_FDCWD, 0x20000000, O_RDONLY|O_DIRECTORY [pid 344] close(4 [pid 349] <... write resumed>) = 4 [pid 348] <... write resumed>) = 4 [pid 336] <... openat resumed>) = 6 [pid 336] chdir(0x20000000 [pid 349] close(3 [pid 348] close(3 [pid 344] <... close resumed>) = 0 [pid 344] close(5) = 0 [pid 344] close(6) = -1 EBADF (Bad file descriptor) [pid 344] close(7 [pid 349] <... close resumed>) = 0 [pid 348] <... close resumed>) = 0 [pid 349] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... futex resumed>) = 0 [pid 348] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] close(8 [pid 349] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 348] <... futex resumed>) = 0 [pid 349] <... rt_sigaction resumed>NULL, 8) = 0 [pid 344] close(9 [pid 349] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 348] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 348] <... rt_sigaction resumed>NULL, 8) = 0 [pid 344] close(10 [pid 349] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 348] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... mmap resumed>) = 0x7efd4eb6c000 [pid 348] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 344] close(11 [pid 349] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 348] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 336] <... chdir resumed>) = 0 [pid 344] close(12 [pid 349] <... mprotect resumed>) = 0 [pid 348] <... mmap resumed>) = 0x7efd4eb6c000 [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 348] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 336] ioctl(4, LOOP_CLR_FD [pid 349] rt_sigprocmask(SIG_BLOCK, ~[], [pid 348] <... mprotect resumed>) = 0 [pid 344] close(13 [pid 349] <... rt_sigprocmask resumed>[], 8) = 0 [pid 336] <... ioctl resumed>) = 0 [pid 348] rt_sigprocmask(SIG_BLOCK, ~[], [pid 349] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 348] <... rt_sigprocmask resumed>[], 8) = 0 [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 336] close(4 [pid 348] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 349] <... clone3 resumed> => {parent_tid=[6]}, 88) = 6 [pid 344] close(14) = -1 EBADF (Bad file descriptor) [pid 348] <... clone3 resumed> => {parent_tid=[6]}, 88) = 6 [pid 349] rt_sigprocmask(SIG_SETMASK, [], [pid 348] rt_sigprocmask(SIG_SETMASK, [], [pid 344] close(15 [pid 349] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 348] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 348] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] close(16 [pid 349] <... futex resumed>) = 0 [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 348] <... futex resumed>) = 0 [pid 349] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] close(17 [pid 348] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 349] <... futex resumed>) = 0 [pid 348] <... futex resumed>) = 0 [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 348] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 344] close(18 [pid 349] <... mmap resumed>) = 0x7efd4eb4b000 [pid 348] <... mmap resumed>) = 0x7efd4eb4b000 [pid 349] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 348] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... mprotect resumed>) = 0 [pid 344] close(19 [pid 336] <... close resumed>) = 0 [pid 348] <... mprotect resumed>) = 0 [pid 349] rt_sigprocmask(SIG_BLOCK, ~[], ./strace-static-x86_64: Process 351 attached [], 8) = 0 [pid 348] rt_sigprocmask(SIG_BLOCK, ~[], [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 336] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 349] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 348] <... rt_sigprocmask resumed>[], 8) = 0 [pid 344] close(20 [pid 336] <... futex resumed>) = 0 [pid 336] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... clone3 resumed> => {parent_tid=[7]}, 88) = 7 [pid 348] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 344] close(21 [pid 349] rt_sigprocmask(SIG_SETMASK, [], [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 351] set_robust_list(0x7efd4eb8c9a0, 24 [pid 344] close(22 [pid 349] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 348] <... clone3 resumed> => {parent_tid=[7]}, 88) = 7 [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 348] rt_sigprocmask(SIG_SETMASK, [], [pid 344] close(23 [pid 332] close(3 [pid 349] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 348] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 332] <... close resumed>) = 0 [pid 350] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 348] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 344] close(24 [pid 332] close(4 [pid 348] <... futex resumed>) = 0 [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 332] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 350] <... prctl resumed>) = 0 [pid 348] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 344] close(25 [pid 332] close(5 [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 332] <... close resumed>) = 0 [pid 344] close(26 [pid 332] close(6 [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 332] <... close resumed>) = 0 [pid 344] close(27 [pid 332] close(7 [pid 350] setpgid(0, 0 [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 332] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 350] <... setpgid resumed>) = 0 [pid 344] close(28 [pid 332] close(8 [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 332] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 344] close(29 [pid 332] close(9 [pid 350] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 344] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 332] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 344] exit_group(0 [pid 332] close(10 [pid 347] <... futex resumed>) = ? [pid 346] <... futex resumed>) = ? [pid 344] <... exit_group resumed>) = ? [pid 332] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 347] +++ exited with 0 +++ [pid 346] +++ exited with 0 +++ [pid 351] <... set_robust_list resumed>) = 0 [pid 332] close(11 [pid 351] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 351] memfd_create("syzkaller", 0) = 3 [pid 351] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7efd4674b000 [pid 351] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 332] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 332] close(12) = -1 EBADF (Bad file descriptor) [pid 332] close(13) = -1 EBADF (Bad file descriptor) [pid 332] close(14) = -1 EBADF (Bad file descriptor) [pid 344] +++ exited with 0 +++ [pid 332] close(15) = -1 EBADF (Bad file descriptor) [pid 332] close(16 [pid 301] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- [pid 332] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] restart_syscall(<... resuming interrupted clone ...> [pid 350] <... openat resumed>) = 3 [pid 332] close(17) = -1 EBADF (Bad file descriptor) [pid 350] write(3, "1000", 4 [pid 332] close(18) = -1 EBADF (Bad file descriptor) [pid 350] <... write resumed>) = 4 [pid 332] close(19) = -1 EBADF (Bad file descriptor) [pid 350] close(3 [pid 332] close(20 [pid 350] <... close resumed>) = 0 [pid 332] <... close resumed>) = -1 EBADF (Bad file descriptor) ./strace-static-x86_64: Process 354 attached [pid 351] <... write resumed>) = 262144 [pid 350] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 332] close(21 [pid 301] <... restart_syscall resumed>) = 0 [pid 332] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 350] <... futex resumed>) = 0 [pid 332] close(22) = -1 EBADF (Bad file descriptor) [pid 350] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 332] close(23 [pid 301] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 350] <... rt_sigaction resumed>NULL, 8) = 0 [pid 332] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 354] set_robust_list(0x7efd4eb6b9a0, 24 [pid 351] munmap(0x7efd4674b000, 262144 [pid 350] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 332] close(24 [pid 301] <... openat resumed>) = 3 [pid 350] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 332] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] ioctl(3, LOOP_CLR_FD [pid 350] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 332] close(25 [pid 301] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 332] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] close(3 [pid 332] close(26 [pid 350] <... mmap resumed>) = 0x7efd4eb6c000 [pid 332] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] <... close resumed>) = 0 [pid 350] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 332] close(27 [pid 301] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 332] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 354] <... set_robust_list resumed>) = 0 [pid 351] <... munmap resumed>) = 0 [pid 354] rt_sigprocmask(SIG_SETMASK, [], [pid 351] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 354] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 351] <... openat resumed>) = 4 [pid 332] close(28 [pid 350] <... mprotect resumed>) = 0 [pid 332] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] <... clone resumed>, child_tidptr=0x555557294750) = 8 [pid 332] close(29) = -1 EBADF (Bad file descriptor) [pid 354] creat("./bus", 000 [pid 351] ioctl(4, LOOP_SET_FD, 3 [pid 332] exit_group(0 [pid 354] <... creat resumed>) = 3 [pid 350] rt_sigprocmask(SIG_BLOCK, ~[], [pid 354] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 338] <... futex resumed>) = ? [pid 336] <... futex resumed>) = ? [pid 332] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 355 attached ./strace-static-x86_64: Process 353 attached ./strace-static-x86_64: Process 352 attached [pid 354] <... futex resumed>) = 1 [pid 351] <... ioctl resumed>) = 0 [pid 350] <... rt_sigprocmask resumed>[], 8) = 0 [pid 348] <... futex resumed>) = 0 [pid 338] +++ exited with 0 +++ [pid 337] <... mount resumed>) = 0 [pid 336] +++ exited with 0 +++ [pid 332] +++ exited with 0 +++ [pid 355] set_robust_list(0x555557294760, 24 [pid 354] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 353] set_robust_list(0x7efd4eb6b9a0, 24 [pid 352] set_robust_list(0x7efd4eb8c9a0, 24 [pid 351] close(3 [pid 350] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 348] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 337] openat(AT_FDCWD, 0x20000000, O_RDONLY|O_DIRECTORY [pid 355] <... set_robust_list resumed>) = 0 [pid 354] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 353] <... set_robust_list resumed>) = 0 [pid 352] <... set_robust_list resumed>) = 0 [pid 351] <... close resumed>) = 0 [pid 348] <... futex resumed>) = 0 [pid 337] <... openat resumed>) = 6 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=8, si_uid=0, si_status=0, si_utime=0, si_stime=4} --- [pid 355] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 354] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 353] rt_sigprocmask(SIG_SETMASK, [], [pid 352] rt_sigprocmask(SIG_SETMASK, [], [pid 351] mkdir("./file0", 0777 [pid 350] <... clone3 resumed> => {parent_tid=[6]}, 88) = 6 [pid 348] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 337] chdir(0x20000000 [pid 302] openat(AT_FDCWD, "/dev/loop3", O_RDWR./strace-static-x86_64: Process 356 attached [pid 355] <... prctl resumed>) = 0 [pid 354] <... mount resumed>) = 0 [pid 353] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 352] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 351] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 350] rt_sigprocmask(SIG_SETMASK, [], [pid 337] <... chdir resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 356] set_robust_list(0x7efd4eb8c9a0, 24 [pid 355] setpgid(0, 0 [pid 354] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 353] creat("./bus", 000 [pid 352] memfd_create("syzkaller", 0 [pid 351] mount("/dev/loop4", "./file0", "ext4", MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "nodiscard,barrier,nouid32,grpquota,,errors=continue" [pid 350] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 302] ioctl(3, LOOP_CLR_FD [pid 355] <... setpgid resumed>) = 0 [pid 354] <... futex resumed>) = 1 [pid 353] <... creat resumed>) = 3 [pid 352] <... memfd_create resumed>) = 4 [pid 350] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 348] <... futex resumed>) = 0 [pid 337] ioctl(4, LOOP_CLR_FD [pid 302] <... ioctl resumed>) = 0 [pid 356] <... set_robust_list resumed>) = 0 [pid 355] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 354] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 353] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 350] <... futex resumed>) = 0 [pid 348] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 337] <... ioctl resumed>) = 0 [pid 302] close(3 [pid 356] rt_sigprocmask(SIG_SETMASK, [], [pid 355] <... openat resumed>) = 3 [pid 354] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 353] <... futex resumed>) = 1 [pid 352] <... mmap resumed>) = 0x7efd4674b000 [pid 350] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 349] <... futex resumed>) = 0 [pid 348] <... futex resumed>) = 0 [pid 337] close(4 [pid 302] <... close resumed>) = 0 [pid 356] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 355] write(3, "1000", 4 [pid 354] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 353] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 352] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 350] <... futex resumed>) = 0 [pid 349] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 348] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 337] <... close resumed>) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] memfd_create("syzkaller", 0 [pid 355] <... write resumed>) = 4 [pid 354] <... open resumed>) = 5 [pid 353] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 352] <... write resumed>) = 262144 [pid 350] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 349] <... futex resumed>) = 0 [pid 337] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 356] <... memfd_create resumed>) = 3 [pid 355] close(3 [pid 354] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 353] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 352] munmap(0x7efd4674b000, 262144 [pid 350] <... mmap resumed>) = 0x7efd4eb4b000 [pid 349] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 337] <... futex resumed>) = 0 [pid 302] <... clone resumed>, child_tidptr=0x555557294750) = 11 ./strace-static-x86_64: Process 357 attached [pid 356] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 355] <... close resumed>) = 0 [pid 354] <... futex resumed>) = 1 [pid 353] <... mount resumed>) = 0 [pid 352] <... munmap resumed>) = 0 [pid 350] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 348] <... futex resumed>) = 0 [pid 337] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 329] close(3 [pid 357] set_robust_list(0x555557294760, 24 [pid 356] <... mmap resumed>) = 0x7efd4674b000 [pid 355] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 354] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 353] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 350] <... mprotect resumed>) = 0 [pid 348] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 329] <... close resumed>) = 0 [pid 357] <... set_robust_list resumed>) = 0 [pid 356] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 355] <... futex resumed>) = 0 [pid 354] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 353] <... futex resumed>) = 1 [pid 352] <... openat resumed>) = 6 [pid 350] rt_sigprocmask(SIG_BLOCK, ~[], [pid 349] <... futex resumed>) = 0 [pid 348] <... futex resumed>) = 0 [ 21.759454][ T337] ext4 filesystem being mounted at /root/file0 supports timestamps until 2038 (0x7fffffff) [ 21.761806][ T336] ext4 filesystem being mounted at /root/file0 supports timestamps until 2038 (0x7fffffff) [ 21.799704][ T351] loop4: detected capacity change from 0 to 512 [pid 329] close(4 [pid 357] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 356] <... write resumed>) = 262144 [pid 355] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 354] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 5, 0 [pid 353] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 352] ioctl(6, LOOP_SET_FD, 4 [pid 350] <... rt_sigprocmask resumed>[], 8) = 0 [pid 349] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 348] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 357] <... prctl resumed>) = 0 [pid 356] munmap(0x7efd4674b000, 262144 [pid 355] <... rt_sigaction resumed>NULL, 8) = 0 [pid 354] <... mmap resumed>) = 0x20000000 [pid 353] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 350] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 349] <... futex resumed>) = 0 [pid 329] close(5 [pid 357] setpgid(0, 0 [pid 356] <... munmap resumed>) = 0 [pid 355] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 354] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 353] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 352] <... ioctl resumed>) = 0 [pid 349] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 357] <... setpgid resumed>) = 0 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 355] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 354] <... futex resumed>) = 1 [pid 353] <... open resumed>) = 5 [pid 350] <... clone3 resumed> => {parent_tid=[7]}, 88) = 7 [pid 348] <... futex resumed>) = 0 [pid 329] <... close resumed>) = 0 [pid 357] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 356] <... openat resumed>) = 4 [pid 355] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 354] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 353] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] close(4 [pid 350] rt_sigprocmask(SIG_SETMASK, [], [pid 348] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 329] close(6 [pid 357] <... openat resumed>) = 3 [pid 356] ioctl(4, LOOP_SET_FD, 3 [pid 355] <... mmap resumed>) = 0x7efd4eb6c000 [pid 354] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 353] <... futex resumed>) = 1 [pid 350] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 349] <... futex resumed>) = 0 [pid 348] <... futex resumed>) = 0 [pid 329] <... close resumed>) = 0 [pid 357] write(3, "1000", 4 [pid 355] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 353] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 352] <... close resumed>) = 0 [pid 350] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... write resumed>) = 4 [pid 356] <... ioctl resumed>) = 0 [pid 355] <... mprotect resumed>) = 0 [pid 354] memfd_create("syzkaller", 0 [pid 353] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 350] <... futex resumed>) = 0 [pid 349] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 329] close(7./strace-static-x86_64: Process 359 attached [pid 357] close(3 [pid 356] close(3 [pid 355] rt_sigprocmask(SIG_BLOCK, ~[], [pid 354] <... memfd_create resumed>) = 4 [pid 353] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 5, 0 [pid 352] mkdir(0x20000000, 0777 [pid 350] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 349] <... futex resumed>) = 0 [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 359] set_robust_list(0x7efd4eb6b9a0, 24 [pid 357] <... close resumed>) = 0 [pid 356] <... close resumed>) = 0 [pid 355] <... rt_sigprocmask resumed>[], 8) = 0 [pid 354] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 353] <... mmap resumed>) = 0x20000000 [pid 352] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 349] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 329] close(8 [pid 359] <... set_robust_list resumed>) = 0 [pid 357] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 356] mkdir("./file0", 0777 [pid 355] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 354] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 353] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] mount("/dev/loop1", 0x20000000, 0x200005c0, MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"... [pid 349] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 359] rt_sigprocmask(SIG_SETMASK, [], [pid 357] <... futex resumed>) = 0 [pid 356] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 354] close(4 [pid 353] <... futex resumed>) = 0 [pid 352] <... mount resumed>) = -1 ENODEV (No such device) [pid 349] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 329] close(9 [pid 359] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 357] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 356] mount("/dev/loop0", "./file0", "ext4", MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "nodiscard,barrier,nouid32,grpquota,,errors=continue" [pid 355] <... clone3 resumed> => {parent_tid=[9]}, 88) = 9 [pid 354] <... close resumed>) = 0 [pid 353] memfd_create("syzkaller", 0 [pid 352] ioctl(6, LOOP_CLR_FD [pid 349] <... futex resumed>) = 0 [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 359] creat("./bus", 000 [pid 357] <... rt_sigaction resumed>NULL, 8) = 0 [pid 355] rt_sigprocmask(SIG_SETMASK, [], [pid 354] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 353] <... memfd_create resumed>) = 6 [pid 352] <... ioctl resumed>) = 0 [pid 329] close(10 [pid 359] <... creat resumed>) = 3 [pid 357] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 355] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 354] <... futex resumed>) = 0 [pid 353] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 352] close(6 [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 359] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 355] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 354] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 353] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 352] <... close resumed>) = 0 [pid 329] close(11 [pid 359] <... futex resumed>) = 1 [pid 357] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 355] <... futex resumed>) = 0 [pid 353] close(6 [pid 352] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 350] <... futex resumed>) = 0 [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 359] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 357] <... mmap resumed>) = 0x7efd4eb6c000 [pid 355] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 353] <... close resumed>) = 0 [pid 352] <... futex resumed>) = 0 [pid 350] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 329] close(12 [pid 359] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 357] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 355] <... futex resumed>) = 0 [pid 353] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 352] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 350] <... futex resumed>) = 0 [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 359] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 357] <... mprotect resumed>) = 0 [pid 355] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 353] <... futex resumed>) = 0 [pid 350] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 348] close(3 [pid 329] close(13 [pid 359] <... mount resumed>) = 0 [pid 357] rt_sigprocmask(SIG_BLOCK, ~[], [pid 355] <... mmap resumed>) = 0x7efd4eb4b000 [pid 353] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 359] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... rt_sigprocmask resumed>[], 8) = 0 [pid 355] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 359] <... futex resumed>) = 0 [pid 357] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 355] <... mprotect resumed>) = 0 [pid 359] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 355] rt_sigprocmask(SIG_BLOCK, ~[], [pid 357] <... clone3 resumed> => {parent_tid=[12]}, 88) = 12 [pid 355] <... rt_sigprocmask resumed>[], 8) = 0 [pid 357] rt_sigprocmask(SIG_SETMASK, [], [pid 355] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 357] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 357] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] <... clone3 resumed> => {parent_tid=[10]}, 88) = 10 [pid 357] <... futex resumed>) = 0 [pid 355] rt_sigprocmask(SIG_SETMASK, [], [pid 357] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 357] <... futex resumed>) = 0 [pid 355] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 355] <... futex resumed>) = 0 [pid 357] <... mmap resumed>) = 0x7efd4eb4b000 [pid 355] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 357] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 357] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 357] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} => {parent_tid=[13]}, 88) = 13 [pid 357] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 357] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 357] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 364 attached [pid 364] set_robust_list(0x7efd4eb6b9a0, 24) = 0 [pid 364] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 364] creat("./bus", 000) = 3 [pid 364] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... futex resumed>) = 0 [pid 357] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 357] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 364] <... futex resumed>) = 1 [pid 364] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL) = 0 [pid 364] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... futex resumed>) = 0 [pid 357] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 357] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 364] <... futex resumed>) = 1 [pid 364] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c) = 4 [pid 364] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... futex resumed>) = 0 [pid 357] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 357] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 364] <... futex resumed>) = 1 [pid 364] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 4, 0) = 0x20000000 [pid 364] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... futex resumed>) = 0 [pid 357] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 364] <... futex resumed>) = 1 [pid 364] memfd_create("syzkaller", 0) = 5 [pid 364] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7efd4674b000 [pid 364] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 65536) = 65536 [pid 364] munmap(0x7efd4674b000, 65536) = 0 [pid 364] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 6 [pid 364] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 364] ioctl(6, LOOP_CLR_FD) = 0 [pid 350] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 348] <... close resumed>) = 0 [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 350] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 359] <... futex resumed>) = 0 [pid 350] <... futex resumed>) = 1 [pid 329] close(14 [pid 348] close(4 [pid 359] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 350] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 359] <... open resumed>) = 5 [pid 348] close(5 [pid 329] close(15 [pid 359] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 348] <... close resumed>) = 0 [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 359] <... futex resumed>) = 1 [pid 350] <... futex resumed>) = 0 [pid 348] close(6 [pid 329] close(16 [pid 359] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 350] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 359] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 350] <... futex resumed>) = 0 [pid 348] close(7 [pid 329] close(17 [pid 359] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 5, 0 [pid 350] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 359] <... mmap resumed>) = 0x20000000 [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 359] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 348] close(8 [pid 329] close(18 [pid 359] <... futex resumed>) = 1 [pid 350] <... futex resumed>) = 0 [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 359] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 350] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 348] close(9 [pid 329] close(19 [pid 359] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 350] <... futex resumed>) = 0 [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 359] memfd_create("syzkaller", 0 [pid 348] close(10 [pid 329] close(20 [pid 359] <... memfd_create resumed>) = 6 [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 359] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 348] close(11 [pid 329] close(21 [pid 359] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 359] close(6) = 0 [pid 348] close(12 [pid 329] close(22 [pid 359] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 359] <... futex resumed>) = 0 [pid 359] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 329] close(23 [pid 348] close(13 [pid 364] ioctl(6, LOOP_SET_FD, 5 [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 364] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 348] close(14 [pid 329] close(24 [pid 364] close(6 [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 348] close(15 [pid 329] close(25 [pid 364] <... close resumed>) = 0 [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 364] close(5 [pid 348] close(16 [pid 329] close(26 [pid 364] <... close resumed>) = 0 [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 348] close(17 [pid 329] close(27 [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 364] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 348] close(18 [pid 329] close(28 [pid 364] <... futex resumed>) = 0 [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 364] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 348] close(19 [pid 329] close(29 [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 329] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 348] close(20 [pid 329] exit_group(0 [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 339] <... futex resumed>) = ? [pid 337] <... futex resumed>) = ? [pid 329] <... exit_group resumed>) = ? [pid 348] close(21 [pid 339] +++ exited with 0 +++ [pid 337] +++ exited with 0 +++ [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [ 21.830536][ T352] loop1: detected capacity change from 0 to 512 [ 21.839875][ T356] loop0: detected capacity change from 0 to 512 [ 21.855016][ T351] EXT4-fs (loop4): revision level too high, forcing read-only mode ./strace-static-x86_64: Process 361 attached [pid 348] close(22 [pid 329] +++ exited with 0 +++ [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- [pid 361] set_robust_list(0x7efd4eb8c9a0, 24 [pid 348] close(23) = -1 EBADF (Bad file descriptor) [pid 348] close(24 [pid 305] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 348] close(25 [pid 305] <... openat resumed>) = 3 [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 305] ioctl(3, LOOP_CLR_FD [pid 348] close(26 [pid 305] <... ioctl resumed>) = 0 [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 305] close(3 [pid 348] close(27 [pid 305] <... close resumed>) = 0 [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 348] close(28) = -1 EBADF (Bad file descriptor) [pid 348] close(29 [pid 305] <... clone resumed>, child_tidptr=0x555557294750) = 8 [pid 348] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 348] exit_group(0) = ? [pid 352] <... futex resumed>) = ? [pid 354] <... futex resumed>) = ? ./strace-static-x86_64: Process 367 attached [pid 354] +++ exited with 0 +++ [pid 367] set_robust_list(0x555557294760, 24) = 0 [pid 367] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 367] setpgid(0, 0) = 0 [pid 367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 361] <... set_robust_list resumed>) = 0 [pid 361] rt_sigprocmask(SIG_SETMASK, [], [pid 367] <... openat resumed>) = 3 [pid 367] write(3, "1000", 4) = 4 [pid 367] close(3) = 0 [pid 367] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 367] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, NULL, 8) = 0 [pid 367] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 367] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb6c000 [pid 367] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 367] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 367] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} => {parent_tid=[9]}, 88) = 9 [pid 367] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 367] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 367] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 367] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb4b000 [pid 367] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 367] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 367] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} => {parent_tid=[10]}, 88) = 10 [pid 367] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 367] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 367] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 368 attached [pid 368] set_robust_list(0x7efd4eb8c9a0, 24) = 0 [pid 368] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 368] memfd_create("syzkaller", 0) = 3 [pid 368] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7efd4674b000 [pid 368] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 368] munmap(0x7efd4674b000, 262144) = 0 [pid 368] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 368] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 368] ioctl(4, LOOP_CLR_FD) = 0 [pid 368] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 368] close(4) = 0 [pid 368] close(3) = 0 [pid 368] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 368] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 361] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 369 attached ./strace-static-x86_64: Process 363 attached ./strace-static-x86_64: Process 362 attached [pid 361] memfd_create("syzkaller", 0 [pid 355] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 352] +++ exited with 0 +++ [pid 348] +++ exited with 0 +++ [pid 363] set_robust_list(0x7efd4eb6b9a0, 24 [pid 362] set_robust_list(0x7efd4eb8c9a0, 24 [pid 361] <... memfd_create resumed>) = 3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 355] futex(0x7efd4ec586ec, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 369] set_robust_list(0x7efd4eb6b9a0, 24 [pid 363] <... set_robust_list resumed>) = 0 [pid 362] <... set_robust_list resumed>) = 0 [pid 361] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 355] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb2a000 [pid 363] rt_sigprocmask(SIG_SETMASK, [], [pid 362] rt_sigprocmask(SIG_SETMASK, [], [pid 361] <... mmap resumed>) = 0x7efd4672a000 [pid 362] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 363] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 355] mprotect(0x7efd4eb2b000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 355] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 355] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb4a990, parent_tid=0x7efd4eb4a990, exit_signal=0, stack=0x7efd4eb2a000, stack_size=0x20240, tls=0x7efd4eb4a6c0} => {parent_tid=[11]}, 88) = 11 [pid 355] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 355] futex(0x7efd4ec586e8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 355] futex(0x7efd4ec586ec, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 361] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 362] memfd_create("syzkaller", 0 [pid 363] creat("./bus", 000 [pid 306] <... openat resumed>) = 3 [pid 362] <... memfd_create resumed>) = 5 [pid 363] <... creat resumed>) = 4 [pid 362] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 363] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 362] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 306] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 363] <... futex resumed>) = 0 [pid 362] close(5 [pid 306] close(3 [pid 361] <... write resumed>) = 262144 [pid 363] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 362] <... close resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 362] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 369] <... set_robust_list resumed>) = 0 [pid 361] munmap(0x7efd4672a000, 262144 [pid 357] close(3) = 0 [pid 362] <... futex resumed>) = 0 [pid 357] close(4) = 0 [pid 357] close(5) = -1 EBADF (Bad file descriptor) [pid 357] close(6) = -1 EBADF (Bad file descriptor) [pid 357] close(7 [pid 362] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 357] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 357] close(8) = -1 EBADF (Bad file descriptor) [pid 357] close(9) = -1 EBADF (Bad file descriptor) [pid 357] close(10) = -1 EBADF (Bad file descriptor) [pid 357] close(11) = -1 EBADF (Bad file descriptor) [pid 357] close(12) = -1 EBADF (Bad file descriptor) [pid 357] close(13) = -1 EBADF (Bad file descriptor) [pid 357] close(14) = -1 EBADF (Bad file descriptor) [pid 357] close(15) = -1 EBADF (Bad file descriptor) [pid 357] close(16) = -1 EBADF (Bad file descriptor) [pid 357] close(17) = -1 EBADF (Bad file descriptor) [pid 357] close(18) = -1 EBADF (Bad file descriptor) [pid 357] close(19 [pid 369] rt_sigprocmask(SIG_SETMASK, [], [pid 357] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] <... clone resumed>, child_tidptr=0x555557294750) = 8 [pid 369] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 361] <... munmap resumed>) = 0 [pid 357] close(20) = -1 EBADF (Bad file descriptor) [pid 357] close(21) = -1 EBADF (Bad file descriptor) [pid 357] close(22) = -1 EBADF (Bad file descriptor) [pid 357] close(23) = -1 EBADF (Bad file descriptor) [pid 357] close(24) = -1 EBADF (Bad file descriptor) [pid 357] close(25) = -1 EBADF (Bad file descriptor) [pid 357] close(26 [pid 369] creat("./bus", 000 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 357] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 369] <... creat resumed>) = 3 [pid 361] <... openat resumed>) = 5 [pid 357] close(27 [pid 369] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 361] ioctl(5, LOOP_SET_FD, 3 [pid 369] <... futex resumed>) = 1 [pid 367] <... futex resumed>) = 0 [pid 357] close(28 [pid 367] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 357] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 368] <... futex resumed>) = 0 [pid 367] <... futex resumed>) = 1 [pid 357] close(29 [pid 368] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 367] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 357] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 368] <... mount resumed>) = 0 [pid 357] exit_group(0 [pid 368] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 364] <... futex resumed>) = ? [pid 357] <... exit_group resumed>) = ? [pid 368] <... futex resumed>) = 1 [pid 367] <... futex resumed>) = 0 [pid 364] +++ exited with 0 +++ [pid 368] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 367] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] <... open resumed>) = 4 [pid 367] <... futex resumed>) = 0 [pid 368] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 367] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 368] <... futex resumed>) = 0 [pid 367] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 368] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 4, 0 [pid 367] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] <... mmap resumed>) = 0x20000000 [pid 367] <... futex resumed>) = 0 [pid 368] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 367] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 368] <... futex resumed>) = 0 [pid 367] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 368] memfd_create("syzkaller", 0 [pid 367] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 368] <... memfd_create resumed>) = 5 [pid 367] <... futex resumed>) = 0 [pid 368] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1 ENOMEM (Cannot allocate memory) [ 21.870976][ T365] EXT4-fs warning (device loop0): kmmpd:160: kmmpd being stopped since MMP feature has been disabled. [ 21.886796][ T351] EXT4-fs error (device loop4): ext4_init_orphan_info:586: comm syz-executor326: inode #0: comm syz-executor326: iget: illegal inode # [ 21.901895][ T356] EXT4-fs (loop0): revision level too high, forcing read-only mode [ 21.919266][ T361] loop5: detected capacity change from 0 to 512 ./strace-static-x86_64: Process 371 attached ./strace-static-x86_64: Process 370 attached [pid 369] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 368] close(5 [pid 362] <... futex resumed>) = ? [pid 361] <... ioctl resumed>) = 0 [pid 368] <... close resumed>) = 0 [pid 368] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 368] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 367] close(3) = 0 [pid 367] close(4) = 0 [pid 367] close(5) = -1 EBADF (Bad file descriptor) [pid 367] close(6) = -1 EBADF (Bad file descriptor) [pid 367] close(7) = -1 EBADF (Bad file descriptor) [pid 367] close(8) = -1 EBADF (Bad file descriptor) [pid 367] close(9) = -1 EBADF (Bad file descriptor) [pid 367] close(10) = -1 EBADF (Bad file descriptor) [pid 367] close(11) = -1 EBADF (Bad file descriptor) [pid 367] close(12) = -1 EBADF (Bad file descriptor) [pid 367] close(13) = -1 EBADF (Bad file descriptor) [pid 367] close(14) = -1 EBADF (Bad file descriptor) [pid 367] close(15) = -1 EBADF (Bad file descriptor) [pid 367] close(16) = -1 EBADF (Bad file descriptor) [pid 367] close(17) = -1 EBADF (Bad file descriptor) [pid 367] close(18) = -1 EBADF (Bad file descriptor) [pid 367] close(19) = -1 EBADF (Bad file descriptor) [pid 367] close(20) = -1 EBADF (Bad file descriptor) [pid 367] close(21) = -1 EBADF (Bad file descriptor) [pid 367] close(22) = -1 EBADF (Bad file descriptor) [pid 367] close(23) = -1 EBADF (Bad file descriptor) [pid 367] close(24) = -1 EBADF (Bad file descriptor) [pid 367] close(25) = -1 EBADF (Bad file descriptor) [pid 367] close(26) = -1 EBADF (Bad file descriptor) [pid 367] close(27) = -1 EBADF (Bad file descriptor) [pid 367] close(28) = -1 EBADF (Bad file descriptor) [pid 367] close(29) = -1 EBADF (Bad file descriptor) [pid 367] exit_group(0 [pid 368] <... futex resumed>) = ? [pid 367] <... exit_group resumed>) = ? [pid 368] +++ exited with 0 +++ [pid 369] <... futex resumed>) = ? [pid 371] set_robust_list(0x555557294760, 24 [pid 370] set_robust_list(0x7efd4eb4a9a0, 24 [pid 369] +++ exited with 0 +++ [pid 367] +++ exited with 0 +++ [pid 362] +++ exited with 0 +++ [pid 361] close(3 [pid 357] +++ exited with 0 +++ [pid 371] <... set_robust_list resumed>) = 0 [pid 370] <... set_robust_list resumed>) = 0 [pid 361] <... close resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=8, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 370] rt_sigprocmask(SIG_SETMASK, [], [pid 361] mkdir("./file0", 0777 [pid 371] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 361] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 370] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 370] mount("/dev/loop5", "./bus", NULL, MS_BIND, NULL) = 0 [pid 361] mount("/dev/loop5", "./file0", "ext4", MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "nodiscard,barrier,nouid32,grpquota,,errors=continue" [pid 305] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 371] <... prctl resumed>) = 0 [pid 370] futex(0x7efd4ec586ec, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 370] <... futex resumed>) = 1 [pid 302] <... openat resumed>) = 3 [pid 370] futex(0x7efd4ec586e8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 305] <... openat resumed>) = 3 [pid 371] setpgid(0, 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 302] ioctl(3, LOOP_CLR_FD [pid 371] <... setpgid resumed>) = 0 [pid 355] <... futex resumed>) = 0 [pid 355] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 363] <... futex resumed>) = 0 [pid 355] <... futex resumed>) = 1 [pid 305] <... ioctl resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 371] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 363] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 355] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 305] close(3 [pid 302] close(3 [pid 363] <... open resumed>) = 3 [pid 305] <... close resumed>) = 0 [pid 302] <... close resumed>) = 0 [pid 371] <... openat resumed>) = 3 [pid 363] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 363] <... futex resumed>) = 1 [pid 355] <... futex resumed>) = 0 [pid 363] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 3, 0 [pid 355] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 363] <... mmap resumed>) = 0x20000000 [pid 355] <... futex resumed>) = 0 [pid 363] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 363] <... futex resumed>) = 0 [pid 355] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 363] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 355] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 363] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 355] <... futex resumed>) = 0 [pid 363] memfd_create("syzkaller", 0) = 6 [pid 371] write(3, "1000", 4 [pid 363] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1 ENOMEM (Cannot allocate memory) [pid 363] close(6) = 0 [pid 363] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 363] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 372 attached [pid 372] set_robust_list(0x555557294760, 24) = 0 [pid 372] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 372] setpgid(0, 0) = 0 [pid 372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 372] write(3, "1000", 4) = 4 [pid 372] close(3) = 0 [pid 372] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 372] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, NULL, 8) = 0 [pid 372] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 372] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb6c000 [pid 372] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 372] rt_sigprocmask(SIG_BLOCK, ~[], ./strace-static-x86_64: Process 373 attached [pid 371] <... write resumed>) = 4 [pid 361] <... mount resumed>) = -1 EINVAL (Invalid argument) [pid 351] <... mount resumed>) = -1 EUCLEAN (Structure needs cleaning) [pid 305] <... clone resumed>, child_tidptr=0x555557294750) = 11 [pid 302] <... clone resumed>, child_tidptr=0x555557294750) = 14 [pid 372] <... rt_sigprocmask resumed>[], 8) = 0 [pid 372] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} => {parent_tid=[12]}, 88) = 12 [pid 372] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 372] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 372] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 372] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb4b000 [pid 372] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 373] set_robust_list(0x555557294760, 24 [pid 371] close(3 [pid 361] ioctl(5, LOOP_CLR_FD [pid 351] ioctl(4, LOOP_CLR_FD [pid 373] <... set_robust_list resumed>) = 0 [pid 371] <... close resumed>) = 0 [pid 373] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 372] rt_sigprocmask(SIG_BLOCK, ~[], [pid 371] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... prctl resumed>) = 0 [pid 372] <... rt_sigprocmask resumed>[], 8) = 0 [pid 372] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 373] setpgid(0, 0 [pid 371] <... futex resumed>) = 0 [pid 361] <... ioctl resumed>) = 0 [pid 351] <... ioctl resumed>) = 0 [pid 373] <... setpgid resumed>) = 0 [pid 371] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 373] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 371] <... rt_sigaction resumed>NULL, 8) = 0 [pid 372] <... clone3 resumed> => {parent_tid=[13]}, 88) = 13 [pid 371] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 372] rt_sigprocmask(SIG_SETMASK, [], [pid 373] <... openat resumed>) = 3 [pid 371] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 372] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 372] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] write(3, "1000", 4 [pid 371] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 361] close(5 [pid 351] close(4 [pid 373] <... write resumed>) = 4 [pid 371] <... mmap resumed>) = 0x7efd4eb6c000 [pid 361] <... close resumed>) = 0 [pid 351] <... close resumed>) = 0 [pid 372] <... futex resumed>) = 0 [pid 372] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 373] close(3 [pid 371] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 373] <... close resumed>) = 0 [pid 371] <... mprotect resumed>) = 0 [pid 373] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] rt_sigprocmask(SIG_BLOCK, ~[], [pid 373] <... futex resumed>) = 0 [pid 371] <... rt_sigprocmask resumed>[], 8) = 0 [pid 373] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 371] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 373] <... rt_sigaction resumed>NULL, 8) = 0 [pid 373] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 371] <... clone3 resumed> => {parent_tid=[9]}, 88) = 9 [pid 373] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 371] rt_sigprocmask(SIG_SETMASK, [], [pid 373] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 371] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 373] <... mmap resumed>) = 0x7efd4eb6c000 [pid 371] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 371] <... futex resumed>) = 0 [pid 373] <... mprotect resumed>) = 0 [pid 371] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 371] <... futex resumed>) = 0 [pid 373] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 371] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb4b000 [pid 373] <... clone3 resumed> => {parent_tid=[15]}, 88) = 15 [pid 371] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 373] rt_sigprocmask(SIG_SETMASK, [], [pid 371] <... mprotect resumed>) = 0 [pid 373] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 373] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] rt_sigprocmask(SIG_BLOCK, ~[], [pid 373] <... futex resumed>) = 0 [pid 371] <... rt_sigprocmask resumed>[], 8) = 0 [pid 361] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] close(3 [pid 351] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 349] close(3 [pid 373] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 355] <... close resumed>) = 0 [pid 349] <... close resumed>) = 0 [pid 373] <... futex resumed>) = 0 [pid 361] <... futex resumed>) = 0 [pid 355] close(4 [pid 351] <... futex resumed>) = 0 [pid 349] close(4 [pid 373] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 371] <... clone3 resumed> => {parent_tid=[10]}, 88) = 10 [pid 355] <... close resumed>) = 0 [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 373] <... mmap resumed>) = 0x7efd4eb4b000 [pid 371] rt_sigprocmask(SIG_SETMASK, [], [pid 355] close(5 [pid 349] close(5 [pid 373] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 371] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 361] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 351] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 349] <... close resumed>) = 0 [pid 373] <... mprotect resumed>) = 0 [pid 371] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] close(6 [pid 349] close(6 [pid 373] rt_sigprocmask(SIG_BLOCK, ~[], [pid 371] <... futex resumed>) = 0 [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 373] <... rt_sigprocmask resumed>[], 8) = 0 [pid 371] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 355] close(7 [pid 349] close(7 [pid 373] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 355] close(8 [pid 349] close(8 [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 373] <... clone3 resumed> => {parent_tid=[16]}, 88) = 16 [pid 355] close(9 [pid 349] close(9 [pid 373] rt_sigprocmask(SIG_SETMASK, [], [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 373] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 355] close(10 [pid 349] close(10 [pid 373] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 373] <... futex resumed>) = 0 [pid 355] close(11 [pid 349] close(11 [pid 373] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 355] close(12 [pid 349] close(12 [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 355] close(13 [pid 349] close(13 [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 355] close(14 [pid 349] close(14 [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 355] close(15 [pid 349] close(15 [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 356] <... mount resumed>) = -1 EUCLEAN (Structure needs cleaning) [pid 355] close(16 [pid 349] close(16 [pid 356] ioctl(4, LOOP_CLR_FD [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 356] <... ioctl resumed>) = 0 [pid 355] close(17 [pid 349] close(17 [pid 356] close(4 [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) ./strace-static-x86_64: Process 377 attached ./strace-static-x86_64: Process 376 attached [pid 356] <... close resumed>) = 0 [pid 355] close(18 [pid 349] close(18./strace-static-x86_64: Process 378 attached [pid 356] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 356] <... futex resumed>) = 0 [pid 355] close(19 [pid 349] close(19 [pid 356] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 355] close(20 [pid 349] close(20 [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 355] close(21 [pid 350] close(3 [pid 349] close(21 [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 350] <... close resumed>) = 0 [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) ./strace-static-x86_64: Process 379 attached [pid 378] set_robust_list(0x7efd4eb6b9a0, 24 [pid 377] set_robust_list(0x7efd4eb8c9a0, 24 [pid 376] set_robust_list(0x7efd4eb8c9a0, 24 [pid 355] close(22 [pid 350] close(4 [pid 349] close(22 [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 355] close(23 [pid 350] close(5 [pid 349] close(23 [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 350] <... close resumed>) = 0 [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 379] set_robust_list(0x7efd4eb6b9a0, 24 [pid 378] <... set_robust_list resumed>) = 0 [pid 377] <... set_robust_list resumed>) = 0 [pid 376] <... set_robust_list resumed>) = 0 [pid 355] close(24 [pid 350] close(6 [pid 349] close(24 [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 355] close(25 [pid 350] close(7 [pid 349] close(25 [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 355] close(26 [pid 350] close(8 [pid 349] close(26 [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 355] close(27 [pid 350] close(9 [pid 349] close(27 [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 355] close(28 [pid 350] close(10 [pid 349] close(28 [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 355] close(29 [pid 350] close(11 [pid 349] close(29 [pid 355] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 378] rt_sigprocmask(SIG_SETMASK, [], [pid 376] rt_sigprocmask(SIG_SETMASK, [], [pid 355] exit_group(0 [pid 350] close(12 [pid 377] rt_sigprocmask(SIG_SETMASK, [], [pid 349] exit_group(0 [pid 379] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 374 attached [pid 379] rt_sigprocmask(SIG_SETMASK, [], [pid 378] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 377] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 376] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 370] <... futex resumed>) = ? [pid 363] <... futex resumed>) = ? [pid 361] <... futex resumed>) = ? [pid 355] <... exit_group resumed>) = ? [pid 353] <... futex resumed>) = ? [pid 351] <... futex resumed>) = ? [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 349] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 375 attached [pid 379] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 378] creat("./bus", 000 [pid 377] memfd_create("syzkaller", 0 [pid 376] memfd_create("syzkaller", 0 [pid 374] set_robust_list(0x7efd4eb8c9a0, 24 [pid 370] +++ exited with 0 +++ [pid 363] +++ exited with 0 +++ [pid 361] +++ exited with 0 +++ [pid 355] +++ exited with 0 +++ [pid 353] +++ exited with 0 +++ [pid 351] +++ exited with 0 +++ [pid 350] close(13 [pid 349] +++ exited with 0 +++ [pid 379] creat("./bus", 000 [pid 378] <... creat resumed>) = 3 [pid 377] <... memfd_create resumed>) = 3 [pid 376] <... memfd_create resumed>) = 4 [pid 375] set_robust_list(0x7efd4eb6b9a0, 24 [pid 374] <... set_robust_list resumed>) = 0 [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 379] <... creat resumed>) = 4 [pid 378] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 377] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 376] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 375] <... set_robust_list resumed>) = 0 [pid 374] rt_sigprocmask(SIG_SETMASK, [], [pid 350] close(14 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5, si_uid=0, si_status=0, si_utime=0, si_stime=6} --- [pid 301] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=8, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 379] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] <... futex resumed>) = 1 [pid 377] <... mmap resumed>) = 0x7efd4674b000 [pid 376] <... mmap resumed>) = 0x7efd4674b000 [pid 375] rt_sigprocmask(SIG_SETMASK, [], [pid 374] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 371] <... futex resumed>) = 0 [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 301] restart_syscall(<... resuming interrupted clone ...> [pid 379] <... futex resumed>) = 1 [pid 378] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 377] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 376] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 375] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 374] memfd_create("syzkaller", 0 [pid 373] <... futex resumed>) = 0 [pid 371] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 350] close(15 [pid 304] <... restart_syscall resumed>) = 0 [pid 301] <... restart_syscall resumed>) = 0 [pid 379] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 378] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 377] <... write resumed>) = 262144 [pid 376] <... write resumed>) = 262144 [pid 375] creat("./bus", 000 [pid 374] <... memfd_create resumed>) = 3 [ 21.921979][ T356] EXT4-fs error (device loop0): ext4_init_orphan_info:586: comm syz-executor326: inode #0: comm syz-executor326: iget: illegal inode # [ 21.935024][ T351] EXT4-fs (loop4): get orphan inode failed [ 21.946065][ T356] EXT4-fs (loop0): get orphan inode failed [ 21.948026][ T351] EXT4-fs (loop4): mount failed [ 21.961004][ T361] EXT4-fs warning (device loop5): read_mmp_block:107: Error -74 while reading MMP block 12 [ 21.967039][ T356] EXT4-fs (loop0): mount failed [pid 373] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... futex resumed>) = 0 [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 379] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 378] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 377] munmap(0x7efd4674b000, 262144 [pid 376] munmap(0x7efd4674b000, 262144 [pid 375] <... creat resumed>) = 4 [pid 374] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 373] <... futex resumed>) = 0 [pid 371] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 350] close(16 [pid 379] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 378] <... mount resumed>) = 0 [pid 377] <... munmap resumed>) = 0 [pid 376] <... munmap resumed>) = 0 [pid 375] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] <... mmap resumed>) = 0x7efd4674b000 [pid 373] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 379] <... mount resumed>) = 0 [pid 378] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 377] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 376] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 375] <... futex resumed>) = 1 [pid 374] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 372] <... futex resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 301] <... openat resumed>) = 3 [pid 379] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] <... futex resumed>) = 1 [pid 377] <... openat resumed>) = 5 [pid 376] <... openat resumed>) = 5 [pid 375] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 374] <... write resumed>) = 262144 [pid 371] <... futex resumed>) = 0 [pid 350] close(17 [pid 301] ioctl(3, LOOP_CLR_FD [pid 379] <... futex resumed>) = 1 [pid 378] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 377] ioctl(5, LOOP_SET_FD, 3 [pid 376] ioctl(5, LOOP_SET_FD, 4 [pid 374] munmap(0x7efd4674b000, 262144 [pid 373] <... futex resumed>) = 0 [pid 371] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 301] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 379] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 378] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 377] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 375] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 374] <... munmap resumed>) = 0 [pid 373] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... futex resumed>) = 0 [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 304] <... openat resumed>) = 3 [pid 301] close(3 [pid 379] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 378] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 377] ioctl(5, LOOP_CLR_FD [pid 374] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 373] <... futex resumed>) = 0 [pid 371] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 301] <... close resumed>) = 0 [pid 379] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 378] <... open resumed>) = 6 [pid 377] <... ioctl resumed>) = 0 [pid 374] <... openat resumed>) = 5 [pid 373] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 301] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 379] <... open resumed>) = 6 [pid 378] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 375] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 374] ioctl(5, LOOP_SET_FD, 3 [pid 372] <... futex resumed>) = 0 [pid 350] close(18 [pid 304] ioctl(3, LOOP_CLR_FD [pid 379] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] <... futex resumed>) = 1 [pid 374] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 371] <... futex resumed>) = 0 [pid 301] <... clone resumed>, child_tidptr=0x555557294750) = 12 [pid 379] <... futex resumed>) = 1 [pid 378] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 376] <... ioctl resumed>) = 0 [pid 375] <... mount resumed>) = 0 [pid 374] ioctl(5, LOOP_CLR_FD [pid 373] <... futex resumed>) = 0 [pid 372] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 371] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 304] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 379] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 378] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 377] ioctl(5, LOOP_SET_FD, 3 [pid 376] close(4 [pid 374] <... ioctl resumed>) = 0 [pid 373] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... futex resumed>) = 0 [pid 379] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 378] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 377] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 376] <... close resumed>) = 0 [pid 373] <... futex resumed>) = 0 [pid 371] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 379] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 378] <... mmap resumed>) = 0x20000000 [pid 377] close(5 [pid 376] mkdir(0x20000000, 0777 [pid 373] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 382 attached [pid 379] <... mmap resumed>) = 0x20000000 [pid 378] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 377] <... close resumed>) = 0 [pid 376] <... mkdir resumed>) = -1 ENOENT (No such file or directory) [pid 375] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 350] close(19 [pid 304] close(3 [pid 382] set_robust_list(0x555557294760, 24 [pid 379] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] <... futex resumed>) = 1 [pid 377] close(3 [pid 376] mount("/dev/loop1", 0x20000000, 0x200005c0, MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"... [pid 371] <... futex resumed>) = 0 [pid 382] <... set_robust_list resumed>) = 0 [pid 379] <... futex resumed>) = 1 [pid 378] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 377] <... close resumed>) = 0 [pid 376] <... mount resumed>) = -1 ENOENT (No such file or directory) [pid 375] <... futex resumed>) = 0 [pid 374] ioctl(5, LOOP_SET_FD, 3 [pid 373] <... futex resumed>) = 0 [pid 372] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 304] <... close resumed>) = 0 [pid 382] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 379] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 378] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 377] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 376] ioctl(5, LOOP_CLR_FD [pid 375] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 374] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 373] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] <... futex resumed>) = 0 [pid 371] <... futex resumed>) = 0 [pid 350] close(20 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 382] <... prctl resumed>) = 0 [pid 378] memfd_create("syzkaller", 0 [pid 377] <... futex resumed>) = 0 [pid 376] <... ioctl resumed>) = 0 [pid 375] <... open resumed>) = 6 [pid 374] close(5 [pid 373] <... futex resumed>) = 0 [pid 372] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] setpgid(0, 0 [pid 378] <... memfd_create resumed>) = 4 [pid 377] memfd_create("syzkaller", 0 [pid 376] close(5 [pid 375] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 374] <... close resumed>) = 0 [pid 350] close(21 [pid 382] <... setpgid resumed>) = 0 [pid 378] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 377] <... memfd_create resumed>) = 3 [pid 376] <... close resumed>) = 0 [pid 375] <... futex resumed>) = 1 [pid 374] close(3 [pid 372] <... futex resumed>) = 0 [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 304] <... clone resumed>, child_tidptr=0x555557294750) = 8 [pid 382] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 378] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 377] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 376] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 375] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 374] <... close resumed>) = 0 [pid 372] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 350] close(22./strace-static-x86_64: Process 384 attached [pid 382] <... openat resumed>) = 3 [pid 378] close(4 [pid 377] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 376] <... futex resumed>) = 0 [pid 375] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 374] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] <... futex resumed>) = 0 [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 384] set_robust_list(0x555557294760, 24 [pid 382] write(3, "1000", 4 [pid 378] <... close resumed>) = 0 [pid 377] close(3 [pid 376] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 375] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 374] <... futex resumed>) = 0 [pid 372] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 350] close(23 [pid 382] <... write resumed>) = 4 [pid 378] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 377] <... close resumed>) = 0 [pid 375] <... mmap resumed>) = 0x20000000 [pid 374] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 371] close(3 [pid 382] close(3 [pid 378] <... futex resumed>) = 0 [pid 377] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 375] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... close resumed>) = 0 [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] <... close resumed>) = 0 [pid 378] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 377] <... futex resumed>) = 0 [pid 375] <... futex resumed>) = 1 [pid 372] <... futex resumed>) = 0 [pid 371] close(4 [pid 350] close(24 [pid 384] <... set_robust_list resumed>) = 0 [pid 382] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 377] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 375] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 372] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 384] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 382] <... futex resumed>) = 0 [pid 371] close(5 [pid 384] <... prctl resumed>) = 0 [pid 382] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 374] <... futex resumed>) = 0 [pid 373] close(3 [pid 372] <... futex resumed>) = 1 [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 350] close(25 [pid 384] setpgid(0, 0 [pid 382] <... rt_sigaction resumed>NULL, 8) = 0 [pid 374] memfd_create("syzkaller", 0 [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] close(6 [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 384] <... setpgid resumed>) = 0 [pid 382] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 374] <... memfd_create resumed>) = 3 [pid 373] close(4 [pid 371] <... close resumed>) = 0 [pid 350] close(26 [pid 384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 382] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 374] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 373] <... close resumed>) = 0 [pid 371] close(7 [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 384] <... openat resumed>) = 3 [pid 382] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 374] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 373] close(5 [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 350] close(27 [pid 384] write(3, "1000", 4 [pid 382] <... mmap resumed>) = 0x7efd4eb6c000 [pid 374] close(3 [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] close(8 [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 384] <... write resumed>) = 4 [pid 382] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 374] <... close resumed>) = 0 [pid 373] close(6 [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 350] close(28 [ 22.020848][ T376] loop1: detected capacity change from 0 to 512 [pid 384] close(3 [pid 382] <... mprotect resumed>) = 0 [pid 374] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... close resumed>) = 0 [pid 372] close(3 [pid 371] close(9 [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 384] <... close resumed>) = 0 [pid 382] rt_sigprocmask(SIG_BLOCK, ~[], [pid 374] <... futex resumed>) = 0 [pid 373] close(7 [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 350] close(29 [pid 384] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] <... rt_sigprocmask resumed>[], 8) = 0 [pid 374] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 372] close(4 [pid 371] close(10 [pid 350] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 384] <... futex resumed>) = 0 [pid 382] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 373] close(8 [pid 372] <... close resumed>) = 0 [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 350] exit_group(0 [pid 384] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 372] close(5 [pid 371] close(11 [pid 359] <... futex resumed>) = ? [pid 356] <... futex resumed>) = ? [pid 350] <... exit_group resumed>) = ? [pid 384] <... rt_sigaction resumed>NULL, 8) = 0 [pid 382] <... clone3 resumed> => {parent_tid=[13]}, 88) = 13 [pid 373] close(9 [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 359] +++ exited with 0 +++ [pid 356] +++ exited with 0 +++ [pid 382] rt_sigprocmask(SIG_SETMASK, [], [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] close(12 [pid 382] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 373] close(10 [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] close(13 [pid 382] <... futex resumed>) = 0 [pid 373] close(11 [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] close(14 [pid 382] <... futex resumed>) = 0 [pid 373] close(12 [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] close(15 [pid 382] <... mmap resumed>) = 0x7efd4eb4b000 [pid 373] close(13 [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] close(16 [pid 382] <... mprotect resumed>) = 0 [pid 373] close(14 [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 384] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 382] rt_sigprocmask(SIG_BLOCK, ~[], [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 372] close(6 [pid 371] close(17 [pid 350] +++ exited with 0 +++ [pid 384] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 382] <... rt_sigprocmask resumed>[], 8) = 0 [pid 373] close(15 [pid 372] <... close resumed>) = 0 [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 384] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 382] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 372] close(7 [pid 371] close(18 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5, si_uid=0, si_status=0, si_utime=0, si_stime=4} --- ./strace-static-x86_64: Process 386 attached [pid 384] <... mmap resumed>) = 0x7efd4eb6c000 [pid 373] close(16 [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 303] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 384] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 382] <... clone3 resumed> => {parent_tid=[14]}, 88) = 14 [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 372] close(8 [pid 371] close(19 [pid 303] <... openat resumed>) = 3 [pid 384] <... mprotect resumed>) = 0 [pid 382] rt_sigprocmask(SIG_SETMASK, [], [pid 373] close(17 [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 303] ioctl(3, LOOP_CLR_FD [pid 384] rt_sigprocmask(SIG_BLOCK, ~[], [pid 382] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 372] close(9 [pid 371] close(20 [pid 303] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 384] <... rt_sigprocmask resumed>[], 8) = 0 [pid 382] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] close(18 [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 303] close(3 [pid 384] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 382] <... futex resumed>) = 0 [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 372] close(10 [pid 371] close(21 [pid 303] <... close resumed>) = 0 [pid 382] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 373] close(19 [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 384] <... clone3 resumed> => {parent_tid=[9]}, 88) = 9 [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 372] close(11 [pid 371] close(22 [pid 384] rt_sigprocmask(SIG_SETMASK, [], [pid 373] close(20 [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 303] <... clone resumed>, child_tidptr=0x555557294750) = 8 [pid 384] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 372] close(12 [pid 371] close(23 [pid 384] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] close(21 [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 384] <... futex resumed>) = 0 [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 372] close(13 [pid 371] close(24 [pid 373] close(22 [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 384] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] close(25 [pid 384] <... futex resumed>) = 0 [pid 373] close(23 [pid 372] close(14 [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 384] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] close(26 [pid 384] <... mmap resumed>) = 0x7efd4eb4b000 [pid 373] close(24 [pid 372] close(15 [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 384] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] close(27 [pid 384] <... mprotect resumed>) = 0 [pid 373] close(25 [pid 372] close(16 [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 386] set_robust_list(0x7efd4eb6b9a0, 24 [pid 384] rt_sigprocmask(SIG_BLOCK, ~[], [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] close(28 [pid 386] <... set_robust_list resumed>) = 0 [pid 384] <... rt_sigprocmask resumed>[], 8) = 0 [pid 373] close(26 [pid 372] close(17 [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 386] rt_sigprocmask(SIG_SETMASK, [], [pid 384] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] close(29 [pid 386] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 373] close(27 [pid 372] close(18 [pid 371] <... close resumed>) = -1 EBADF (Bad file descriptor) ./strace-static-x86_64: Process 389 attached ./strace-static-x86_64: Process 388 attached ./strace-static-x86_64: Process 387 attached ./strace-static-x86_64: Process 385 attached [pid 386] creat("./bus", 000 [pid 384] <... clone3 resumed> => {parent_tid=[10]}, 88) = 10 [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 371] exit_group(0 [pid 389] set_robust_list(0x7efd4eb6b9a0, 24 [pid 388] set_robust_list(0x555557294760, 24 [pid 387] set_robust_list(0x7efd4eb8c9a0, 24 [pid 385] set_robust_list(0x7efd4eb8c9a0, 24 [pid 384] rt_sigprocmask(SIG_SETMASK, [], [pid 372] close(19 [pid 389] <... set_robust_list resumed>) = 0 [pid 388] <... set_robust_list resumed>) = 0 [pid 387] <... set_robust_list resumed>) = 0 [pid 385] <... set_robust_list resumed>) = 0 [pid 384] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 389] rt_sigprocmask(SIG_SETMASK, [], [pid 388] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 387] rt_sigprocmask(SIG_SETMASK, [], [pid 385] rt_sigprocmask(SIG_SETMASK, [], [pid 384] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 378] <... futex resumed>) = ? [pid 376] <... futex resumed>) = ? [pid 373] close(28 [pid 372] close(20 [pid 371] <... exit_group resumed>) = ? [pid 389] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 388] <... prctl resumed>) = 0 [pid 387] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 385] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 384] <... futex resumed>) = 0 [pid 378] +++ exited with 0 +++ [pid 376] +++ exited with 0 +++ [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 389] creat("./bus", 000 [pid 388] setpgid(0, 0 [pid 387] memfd_create("syzkaller", 0 [pid 385] memfd_create("syzkaller", 0 [pid 384] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 373] close(29 [pid 372] close(21 [pid 371] +++ exited with 0 +++ [pid 389] <... creat resumed>) = 3 [pid 388] <... setpgid resumed>) = 0 [pid 387] <... memfd_create resumed>) = 4 [pid 385] <... memfd_create resumed>) = 3 [pid 373] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=8, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 389] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 387] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 385] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 373] exit_group(0 [pid 372] close(22 [pid 389] <... futex resumed>) = 1 [pid 388] <... openat resumed>) = 3 [pid 387] <... mmap resumed>) = 0x7efd4674b000 [pid 385] <... mmap resumed>) = 0x7efd4674b000 [pid 384] <... futex resumed>) = 0 [pid 379] <... futex resumed>) = ? [pid 377] <... futex resumed>) = ? [pid 373] <... exit_group resumed>) = ? [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 389] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 388] write(3, "1000", 4 [pid 387] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 385] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 384] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 379] +++ exited with 0 +++ [pid 377] +++ exited with 0 +++ [pid 372] close(23 [pid 389] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 388] <... write resumed>) = 4 [pid 387] <... write resumed>) = 262144 [pid 385] <... write resumed>) = 262144 [pid 384] <... futex resumed>) = 0 [pid 373] +++ exited with 0 +++ [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 386] <... creat resumed>) = 4 [pid 389] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 388] close(3 [pid 387] munmap(0x7efd4674b000, 262144 [pid 385] munmap(0x7efd4674b000, 262144 [pid 384] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 372] close(24 [pid 386] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 389] <... mount resumed>) = 0 [pid 388] <... close resumed>) = 0 [pid 387] <... munmap resumed>) = 0 [pid 385] <... munmap resumed>) = 0 [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 382] <... futex resumed>) = 0 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 386] <... futex resumed>) = 1 [pid 389] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 387] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 385] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 386] mount("/dev/loop5", "./bus", NULL, MS_BIND, NULL [pid 382] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] close(25 [pid 306] <... openat resumed>) = 3 [pid 302] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 389] <... futex resumed>) = 1 [pid 388] <... futex resumed>) = 0 [pid 387] <... openat resumed>) = 5 [pid 385] <... openat resumed>) = 5 [pid 384] <... futex resumed>) = 0 [pid 382] <... futex resumed>) = 0 [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 389] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 388] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 387] ioctl(5, LOOP_SET_FD, 4 [pid 386] <... mount resumed>) = 0 [pid 385] ioctl(5, LOOP_SET_FD, 3 [pid 384] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 372] close(26 [pid 306] ioctl(3, LOOP_CLR_FD [pid 302] <... openat resumed>) = 3 [pid 389] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 388] <... rt_sigaction resumed>NULL, 8) = 0 [pid 386] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 306] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 302] ioctl(3, LOOP_CLR_FD [pid 386] <... futex resumed>) = 0 [pid 382] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] close(3 [pid 302] <... ioctl resumed>) = 0 [pid 386] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 382] <... futex resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 302] close(3 [pid 386] <... open resumed>) = 6 [pid 382] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 302] <... close resumed>) = 0 [pid 386] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 386] <... futex resumed>) = 0 [pid 382] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 306] <... clone resumed>, child_tidptr=0x555557294750) = 11 [pid 386] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 382] <... futex resumed>) = 0 [pid 302] <... clone resumed>, child_tidptr=0x555557294750) = 17 [pid 389] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 388] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 386] <... mmap resumed>) = 0x20000000 [pid 384] <... futex resumed>) = 0 [pid 382] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 389] <... open resumed>) = 6 [pid 388] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 387] <... ioctl resumed>) = 0 [pid 386] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 372] close(27 [pid 389] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 387] close(4 [pid 386] <... futex resumed>) = 0 [pid 384] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 382] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) ./strace-static-x86_64: Process 391 attached [pid 389] <... futex resumed>) = 0 [pid 388] <... mmap resumed>) = 0x7efd4eb6c000 [pid 387] <... close resumed>) = 0 [pid 386] memfd_create("syzkaller", 0 [pid 385] <... ioctl resumed>) = 0 [pid 384] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] <... futex resumed>) = 0 [pid 372] close(28 [pid 389] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 388] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 387] mkdir("./file0", 0777 [pid 386] <... memfd_create resumed>) = 7 [pid 385] close(3 [pid 384] <... futex resumed>) = 0 [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 389] <... mmap resumed>) = 0x20000000 [pid 388] <... mprotect resumed>) = 0 [pid 386] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 384] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 372] close(29 [pid 389] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] rt_sigprocmask(SIG_BLOCK, ~[], [pid 386] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 384] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 372] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 389] <... futex resumed>) = 0 [pid 388] <... rt_sigprocmask resumed>[], 8) = 0 [pid 386] close(7 [pid 384] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 372] exit_group(0 [pid 391] set_robust_list(0x555557294760, 24 [pid 389] memfd_create("syzkaller", 0 [pid 388] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 387] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 386] <... close resumed>) = 0 [pid 385] <... close resumed>) = 0 [pid 384] <... futex resumed>) = 0 [pid 372] <... exit_group resumed>) = ? [pid 374] <... futex resumed>) = ? [pid 375] <... futex resumed>) = ? [pid 389] <... memfd_create resumed>) = 4 [pid 387] mount("/dev/loop4", 0x20000000, 0x200005c0, MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"... [pid 386] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 385] mkdir(0x20000000, 0777./strace-static-x86_64: Process 390 attached [pid 389] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 387] <... mount resumed>) = -1 ENODEV (No such device) [pid 386] <... futex resumed>) = 0 [pid 374] +++ exited with 0 +++ [pid 390] set_robust_list(0x555557294760, 24 [pid 389] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 387] ioctl(5, LOOP_CLR_FD [pid 386] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 390] <... set_robust_list resumed>) = 0 [pid 389] close(4 [pid 388] <... clone3 resumed> => {parent_tid=[9]}, 88) = 9 [pid 387] <... ioctl resumed>) = 0 [pid 385] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 375] +++ exited with 0 +++ [pid 372] +++ exited with 0 +++ [pid 391] <... set_robust_list resumed>) = 0 [pid 390] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 389] <... close resumed>) = 0 [pid 388] rt_sigprocmask(SIG_SETMASK, [], [pid 387] close(5 [pid 385] mount("/dev/loop5", 0x20000000, 0x200005c0, MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"... [pid 390] <... prctl resumed>) = 0 [pid 389] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 387] <... close resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 385] <... mount resumed>) = -1 ENODEV (No such device) [pid 391] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 390] setpgid(0, 0 [pid 389] <... futex resumed>) = 0 [pid 388] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 387] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 385] ioctl(5, LOOP_CLR_FD [pid 384] close(3 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 391] <... prctl resumed>) = 0 [pid 390] <... setpgid resumed>) = 0 [pid 389] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 388] <... futex resumed>) = 0 [pid 387] <... futex resumed>) = 0 [pid 385] <... ioctl resumed>) = 0 [pid 384] <... close resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 391] setpgid(0, 0 [pid 390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 388] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 387] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 385] close(5 [pid 384] close(4 [pid 391] <... setpgid resumed>) = 0 [pid 390] <... openat resumed>) = 3 [pid 388] <... futex resumed>) = 0 [pid 385] <... close resumed>) = 0 [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 390] write(3, "1000", 4 [pid 388] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 385] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] close(5 [pid 305] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 391] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 390] <... write resumed>) = 4 [pid 388] <... mmap resumed>) = 0x7efd4eb4b000 [pid 385] <... futex resumed>) = 0 [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 305] <... openat resumed>) = 3 [pid 390] close(3 [pid 388] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 305] ioctl(3, LOOP_CLR_FD [pid 390] <... close resumed>) = 0 [pid 385] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 384] close(6 [pid 305] <... ioctl resumed>) = 0 [pid 391] <... openat resumed>) = 3 [pid 390] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] <... mprotect resumed>) = 0 [pid 384] <... close resumed>) = 0 [pid 305] close(3 [pid 391] write(3, "1000", 4 [pid 390] <... futex resumed>) = 0 [pid 388] rt_sigprocmask(SIG_BLOCK, ~[], [pid 384] close(7 [pid 305] <... close resumed>) = 0 [pid 391] <... write resumed>) = 4 [pid 390] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 388] <... rt_sigprocmask resumed>[], 8) = 0 [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 391] close(3 [pid 390] <... rt_sigaction resumed>NULL, 8) = 0 [pid 388] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 384] close(8 [pid 382] close(3 [pid 391] <... close resumed>) = 0 [pid 390] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 305] <... clone resumed>, child_tidptr=0x555557294750) = 14 [pid 391] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 388] <... clone3 resumed> => {parent_tid=[10]}, 88) = 10 [pid 384] close(9 [pid 382] close(4 [pid 391] <... futex resumed>) = 0 [pid 390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 388] rt_sigprocmask(SIG_SETMASK, [], [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] <... close resumed>) = 0 [pid 391] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 390] <... mmap resumed>) = 0x7efd4eb6c000 [pid 388] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 384] close(10 [pid 382] close(5 [pid 391] <... rt_sigaction resumed>NULL, 8) = 0 [pid 390] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 388] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 390] <... mprotect resumed>) = 0 [pid 388] <... futex resumed>) = 0 [pid 384] close(11 [pid 382] close(6 [pid 391] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 390] rt_sigprocmask(SIG_BLOCK, ~[], [pid 388] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] <... close resumed>) = 0 [pid 391] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 390] <... rt_sigprocmask resumed>[], 8) = 0 [pid 384] close(12 [pid 382] close(7 [pid 391] <... mmap resumed>) = 0x7efd4eb6c000 [pid 390] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 384] close(13 [pid 382] close(8 [pid 391] <... mprotect resumed>) = 0 [pid 390] <... clone3 resumed> => {parent_tid=[12]}, 88) = 12 [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 390] rt_sigprocmask(SIG_SETMASK, [], [pid 384] close(14 [pid 382] close(9./strace-static-x86_64: Process 392 attached [pid 391] rt_sigprocmask(SIG_BLOCK, ~[], [pid 390] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 392] set_robust_list(0x7efd4eb8c9a0, 24 [pid 391] <... rt_sigprocmask resumed>[], 8) = 0 [pid 390] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] close(15 [pid 382] close(10 [pid 392] <... set_robust_list resumed>) = 0 [pid 391] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 390] <... futex resumed>) = 0 [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) ./strace-static-x86_64: Process 393 attached [pid 392] rt_sigprocmask(SIG_SETMASK, [], [pid 390] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] close(16 [pid 382] close(11 [pid 393] set_robust_list(0x555557294760, 24 [pid 392] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 391] <... clone3 resumed> => {parent_tid=[18]}, 88) = 18 [pid 390] <... futex resumed>) = 0 [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) ./strace-static-x86_64: Process 394 attached [pid 393] <... set_robust_list resumed>) = 0 [pid 392] memfd_create("syzkaller", 0 [pid 391] rt_sigprocmask(SIG_SETMASK, [], [pid 390] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 384] close(17 [pid 382] close(12 [pid 394] set_robust_list(0x7efd4eb6b9a0, 24 [pid 393] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 392] <... memfd_create resumed>) = 3 [pid 391] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 390] <... mmap resumed>) = 0x7efd4eb4b000 [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 394] <... set_robust_list resumed>) = 0 [pid 393] <... prctl resumed>) = 0 [pid 392] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 391] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 384] close(18 [pid 382] close(13 [pid 394] rt_sigprocmask(SIG_SETMASK, [], [pid 393] setpgid(0, 0 [pid 392] <... mmap resumed>) = 0x7efd4674b000 [pid 391] <... futex resumed>) = 0 [pid 390] <... mprotect resumed>) = 0 [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 393] <... setpgid resumed>) = 0 [pid 391] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] rt_sigprocmask(SIG_BLOCK, ~[], [pid 384] close(19 [pid 382] close(14 [pid 393] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 391] <... futex resumed>) = 0 [pid 390] <... rt_sigprocmask resumed>[], 8) = 0 [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 394] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 393] <... openat resumed>) = 3 [pid 391] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 390] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 384] close(20 [pid 382] close(15 [pid 394] creat("./bus", 000 [pid 393] write(3, "1000", 4 [pid 391] <... mmap resumed>) = 0x7efd4eb4b000 [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 394] <... creat resumed>) = 4 [pid 393] <... write resumed>) = 4 [pid 391] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 390] <... clone3 resumed> => {parent_tid=[13]}, 88) = 13 [pid 384] close(21 [pid 392] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 382] close(16./strace-static-x86_64: Process 395 attached [pid 394] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] close(3 [pid 391] <... mprotect resumed>) = 0 [pid 390] rt_sigprocmask(SIG_SETMASK, [], [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 395] set_robust_list(0x7efd4eb8c9a0, 24 [pid 394] <... futex resumed>) = 1 [pid 393] <... close resumed>) = 0 [pid 391] rt_sigprocmask(SIG_BLOCK, ~[], [pid 390] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 388] <... futex resumed>) = 0 [pid 384] close(22 [pid 382] close(17 [pid 395] <... set_robust_list resumed>) = 0 [pid 393] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] <... rt_sigprocmask resumed>[], 8) = 0 [pid 390] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 395] rt_sigprocmask(SIG_SETMASK, [], [pid 394] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 393] <... futex resumed>) = 0 [pid 391] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 390] <... futex resumed>) = 0 [pid 388] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] close(18 [pid 395] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 393] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 390] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 388] <... futex resumed>) = 0 [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 384] close(23 [pid 395] memfd_create("syzkaller", 0 [pid 394] <... mount resumed>) = 0 [pid 393] <... rt_sigaction resumed>NULL, 8) = 0 [pid 391] <... clone3 resumed> => {parent_tid=[19]}, 88) = 19 [pid 388] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] close(19./strace-static-x86_64: Process 396 attached [pid 395] <... memfd_create resumed>) = 3 [pid 394] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 391] rt_sigprocmask(SIG_SETMASK, [], [pid 388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 384] close(24 [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) ./strace-static-x86_64: Process 397 attached [pid 396] set_robust_list(0x7efd4eb8c9a0, 24 [pid 395] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 394] <... futex resumed>) = 0 [pid 393] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 392] <... write resumed>) = 262144 [pid 391] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 388] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] close(20 [pid 397] set_robust_list(0x7efd4eb6b9a0, 24 [pid 396] <... set_robust_list resumed>) = 0 [pid 395] <... mmap resumed>) = 0x7efd4674b000 [pid 394] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 393] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 392] munmap(0x7efd4674b000, 262144 [pid 391] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] <... futex resumed>) = 0 [pid 384] close(25 [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 397] <... set_robust_list resumed>) = 0 [pid 396] rt_sigprocmask(SIG_SETMASK, [], [pid 395] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 394] <... open resumed>) = 5 [pid 393] <... mmap resumed>) = 0x7efd4eb6c000 [pid 391] <... futex resumed>) = 0 [pid 388] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] close(21./strace-static-x86_64: Process 398 attached [pid 397] rt_sigprocmask(SIG_SETMASK, [], [pid 396] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 395] <... write resumed>) = 262144 [pid 394] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 392] <... munmap resumed>) = 0 [pid 391] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 384] close(26 [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 397] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 396] memfd_create("syzkaller", 0 [pid 395] munmap(0x7efd4674b000, 262144 [pid 394] <... futex resumed>) = 0 [pid 393] <... mprotect resumed>) = 0 [pid 392] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 388] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] close(22 [pid 398] set_robust_list(0x7efd4eb6b9a0, 24 [pid 397] creat("./bus", 000 [pid 396] <... memfd_create resumed>) = 3 [pid 395] <... munmap resumed>) = 0 [pid 394] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 5, 0 [pid 393] rt_sigprocmask(SIG_BLOCK, ~[], [pid 392] <... openat resumed>) = 6 [pid 388] <... futex resumed>) = 0 [pid 384] close(27 [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 398] <... set_robust_list resumed>) = 0 [pid 397] <... creat resumed>) = 4 [ 22.127175][ T387] loop4: detected capacity change from 0 to 512 [ 22.133460][ T385] loop5: detected capacity change from 0 to 512 [pid 396] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 395] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 394] <... mmap resumed>) = 0x20000000 [pid 393] <... rt_sigprocmask resumed>[], 8) = 0 [pid 392] ioctl(6, LOOP_SET_FD, 3 [pid 388] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] close(23 [pid 397] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 395] <... openat resumed>) = 5 [pid 394] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 388] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 384] close(28 [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 397] <... futex resumed>) = 1 [pid 396] <... mmap resumed>) = 0x7efd4674b000 [pid 395] ioctl(5, LOOP_SET_FD, 3 [pid 390] <... futex resumed>) = 0 [pid 382] close(24 [pid 398] rt_sigprocmask(SIG_SETMASK, [], [pid 397] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 396] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 394] <... futex resumed>) = 0 [pid 393] <... clone3 resumed> => {parent_tid=[15]}, 88) = 15 [pid 390] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 388] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 397] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 393] rt_sigprocmask(SIG_SETMASK, [], [pid 390] <... futex resumed>) = 0 [pid 382] close(25 [pid 397] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 393] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 390] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 397] <... mount resumed>) = 0 [pid 393] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] close(26 [pid 397] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] <... futex resumed>) = 0 [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 397] <... futex resumed>) = 1 [pid 393] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] <... futex resumed>) = 0 [pid 382] close(27 [pid 397] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 393] <... futex resumed>) = 0 [pid 390] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 397] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 393] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 390] <... futex resumed>) = 0 [pid 382] close(28 [pid 397] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 393] <... mmap resumed>) = 0x7efd4eb4b000 [pid 390] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 397] <... open resumed>) = 6 [pid 393] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 382] close(29 [pid 397] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] <... mprotect resumed>) = 0 [pid 382] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 397] <... futex resumed>) = 1 [pid 393] rt_sigprocmask(SIG_BLOCK, ~[], [pid 390] <... futex resumed>) = 0 [pid 382] exit_group(0 [pid 397] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 393] <... rt_sigprocmask resumed>[], 8) = 0 [pid 390] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 386] <... futex resumed>) = ? [pid 382] <... exit_group resumed>) = ? [pid 397] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 393] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 390] <... futex resumed>) = 0 [pid 386] +++ exited with 0 +++ [pid 397] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 390] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 397] <... mmap resumed>) = 0x20000000 [pid 393] <... clone3 resumed> => {parent_tid=[16]}, 88) = 16 [pid 397] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] rt_sigprocmask(SIG_SETMASK, [], [pid 397] <... futex resumed>) = 1 [pid 393] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 390] <... futex resumed>) = 0 [pid 397] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 393] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 397] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 393] <... futex resumed>) = 0 [pid 390] <... futex resumed>) = 0 ./strace-static-x86_64: Process 400 attached ./strace-static-x86_64: Process 399 attached [pid 398] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 396] <... write resumed>) = 262144 [pid 395] <... ioctl resumed>) = 0 [pid 392] <... ioctl resumed>) = 0 [pid 388] <... futex resumed>) = 0 [pid 385] <... futex resumed>) = ? [pid 384] close(29 [pid 400] set_robust_list(0x7efd4eb6b9a0, 24 [pid 399] set_robust_list(0x7efd4eb8c9a0, 24 [pid 398] creat("./bus", 000 [pid 396] munmap(0x7efd4674b000, 262144 [pid 395] close(3 [pid 394] memfd_create("syzkaller", 0 [pid 393] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 392] close(3 [pid 385] +++ exited with 0 +++ [pid 384] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 382] +++ exited with 0 +++ [pid 400] <... set_robust_list resumed>) = 0 [pid 399] <... set_robust_list resumed>) = 0 [pid 398] <... creat resumed>) = 4 [pid 396] <... munmap resumed>) = 0 [pid 395] <... close resumed>) = 0 [pid 394] <... memfd_create resumed>) = 7 [pid 392] <... close resumed>) = 0 [pid 384] exit_group(0 [pid 301] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=12, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- [pid 400] rt_sigprocmask(SIG_SETMASK, [], [pid 399] rt_sigprocmask(SIG_SETMASK, [], [pid 398] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 397] memfd_create("syzkaller", 0 [pid 396] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 395] mkdir(0x20000000, 0777 [pid 394] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 392] mkdir(0x20000000, 0777 [pid 389] <... futex resumed>) = ? [pid 387] <... futex resumed>) = ? [pid 384] <... exit_group resumed>) = ? [pid 400] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 399] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 398] <... futex resumed>) = 1 [pid 397] <... memfd_create resumed>) = 3 [pid 396] <... openat resumed>) = 5 [pid 395] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 394] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 392] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 391] <... futex resumed>) = 0 [pid 389] +++ exited with 0 +++ [pid 387] +++ exited with 0 +++ [pid 400] creat("./bus", 000 [pid 399] memfd_create("syzkaller", 0 [pid 398] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 396] ioctl(5, LOOP_SET_FD, 3 [pid 395] mount("/dev/loop1", 0x20000000, 0x200005c0, MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"... [pid 394] close(7 [pid 392] mount("/dev/loop0", 0x20000000, 0x200005c0, MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"... [pid 391] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 400] <... creat resumed>) = 3 [pid 399] <... memfd_create resumed>) = 4 [pid 398] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 396] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 395] <... mount resumed>) = -1 ENODEV (No such device) [pid 392] <... mount resumed>) = -1 ENODEV (No such device) [pid 391] <... futex resumed>) = 0 [pid 384] +++ exited with 0 +++ [pid 400] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 398] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 397] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 396] ioctl(5, LOOP_CLR_FD [pid 395] ioctl(5, LOOP_CLR_FD [pid 394] <... close resumed>) = 0 [pid 392] ioctl(6, LOOP_CLR_FD [pid 391] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 301] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 400] <... futex resumed>) = 1 [pid 399] <... mmap resumed>) = 0x7efd4674b000 [pid 398] <... mount resumed>) = 0 [pid 397] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 396] <... ioctl resumed>) = 0 [pid 395] <... ioctl resumed>) = 0 [pid 394] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] <... futex resumed>) = 0 [pid 392] <... ioctl resumed>) = 0 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=8, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 301] <... openat resumed>) = 3 [pid 400] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 399] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 398] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 397] close(3 [pid 395] close(5 [pid 394] <... futex resumed>) = 0 [pid 393] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 392] close(6 [pid 304] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 301] ioctl(3, LOOP_CLR_FD [pid 400] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 399] <... write resumed>) = 262144 [pid 398] <... futex resumed>) = 1 [pid 397] <... close resumed>) = 0 [pid 395] <... close resumed>) = 0 [pid 394] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 393] <... futex resumed>) = 0 [pid 392] <... close resumed>) = 0 [pid 391] <... futex resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 301] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 400] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 399] munmap(0x7efd4674b000, 262144 [pid 398] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 397] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 395] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 392] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] ioctl(3, LOOP_CLR_FD [pid 301] close(3 [pid 400] <... mount resumed>) = 0 [pid 399] <... munmap resumed>) = 0 [pid 398] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 397] <... futex resumed>) = 0 [pid 395] <... futex resumed>) = 0 [pid 392] <... futex resumed>) = 0 [pid 391] <... futex resumed>) = 0 [pid 304] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 301] <... close resumed>) = 0 [pid 400] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 398] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 397] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 396] ioctl(5, LOOP_SET_FD, 3 [pid 395] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 392] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 391] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] close(3 [pid 301] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 400] <... futex resumed>) = 1 [pid 399] <... openat resumed>) = 5 [pid 398] <... open resumed>) = 6 [pid 396] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 393] <... futex resumed>) = 0 [pid 390] close(3 [pid 388] close(3 [pid 304] <... close resumed>) = 0 ./strace-static-x86_64: Process 401 attached [pid 400] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 399] ioctl(5, LOOP_SET_FD, 4 [pid 398] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 396] close(5 [pid 393] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 401] set_robust_list(0x555557294760, 24 [pid 400] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 399] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 398] <... futex resumed>) = 1 [pid 396] <... close resumed>) = 0 [pid 393] <... futex resumed>) = 0 [pid 391] <... futex resumed>) = 0 [pid 390] close(4 [pid 388] close(4 [pid 301] <... clone resumed>, child_tidptr=0x555557294750) = 15 [pid 400] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 399] ioctl(5, LOOP_CLR_FD [pid 398] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 396] close(3 [pid 393] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 391] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] <... close resumed>) = 0 [pid 388] <... close resumed>) = 0 [pid 304] <... clone resumed>, child_tidptr=0x555557294750) = 11 [pid 401] <... set_robust_list resumed>) = 0 [pid 400] <... open resumed>) = 6 [pid 399] <... ioctl resumed>) = 0 [pid 398] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 396] <... close resumed>) = 0 [pid 391] <... futex resumed>) = 0 [pid 388] close(5 [pid 400] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 398] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 396] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 391] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 390] close(5 [pid 388] <... close resumed>) = 0 [pid 401] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 400] <... futex resumed>) = 1 [pid 398] <... mmap resumed>) = 0x20000000 [pid 396] <... futex resumed>) = 0 [pid 393] <... futex resumed>) = 0 [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(6 [pid 400] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 398] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 396] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 393] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] close(6 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 400] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 399] ioctl(5, LOOP_SET_FD, 4 [pid 398] <... futex resumed>) = 1 [pid 393] <... futex resumed>) = 0 [pid 391] <... futex resumed>) = 0 [pid 390] <... close resumed>) = 0 [pid 388] close(7 [pid 400] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 399] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 398] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 393] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 391] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] close(7 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] <... prctl resumed>) = 0 [pid 400] <... mmap resumed>) = 0x20000000 [pid 399] close(5 [pid 396] <... futex resumed>) = 0 [pid 391] <... futex resumed>) = 1 [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(8 [pid 401] setpgid(0, 0 [pid 400] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 399] <... close resumed>) = 0 [pid 396] memfd_create("syzkaller", 0 [pid 390] close(8 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] <... setpgid resumed>) = 0 [pid 400] <... futex resumed>) = 1 [pid 399] close(4 [pid 396] <... memfd_create resumed>) = 3 [pid 393] <... futex resumed>) = 0 [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(9 [pid 401] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 400] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 399] <... close resumed>) = 0 [pid 396] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 393] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] close(9 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] <... openat resumed>) = 3 [pid 400] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 399] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 396] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 393] <... futex resumed>) = 0 [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(10 [pid 401] write(3, "1000", 4 [pid 400] memfd_create("syzkaller", 0 [pid 399] <... futex resumed>) = 0 [pid 396] close(3 [pid 390] close(10 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] <... write resumed>) = 4 [pid 400] <... memfd_create resumed>) = 4 [pid 399] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 396] <... close resumed>) = 0 [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(11 [pid 401] close(3 [pid 400] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 396] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 390] close(11 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] <... close resumed>) = 0 [pid 400] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 396] <... futex resumed>) = 0 [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(12 [pid 401] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 400] close(4 [pid 396] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 391] close(3 [pid 390] close(12 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] <... futex resumed>) = 0 [pid 400] <... close resumed>) = 0 [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(13 [ 22.170443][ T392] loop0: detected capacity change from 0 to 512 [ 22.170855][ T395] loop1: detected capacity change from 0 to 512 [ 22.183866][ T394] I/O error, dev loop0, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 15 prio class 2 [ 22.188188][ T397] I/O error, dev loop1, sector 0 op 0x0:(READ) flags 0x80700 phys_seg 32 prio class 2 [pid 401] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 400] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] close(3 [pid 391] close(4 [pid 390] close(13 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] <... rt_sigaction resumed>NULL, 8) = 0 [pid 400] <... futex resumed>) = 0 [pid 393] <... close resumed>) = 0 [pid 391] <... close resumed>) = 0 [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(14 [pid 400] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 393] close(4 [pid 391] close(5 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(15 [pid 393] close(5 [pid 391] close(6 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = 0 [pid 388] close(16 [pid 393] close(6 [pid 391] close(7 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 393] <... close resumed>) = 0 [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(17 [pid 393] close(7 [pid 391] close(8 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(18 [pid 393] close(8 [pid 391] close(9 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(19 [pid 393] close(9 [pid 391] close(10 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(20 [pid 393] close(10 [pid 391] close(11 [pid 390] close(14 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(21 [pid 393] close(11 [pid 391] close(12 [pid 390] close(15 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(22 [pid 393] close(12 [pid 391] close(13 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(23 [pid 393] close(13 [pid 391] close(14 [pid 390] close(16 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(24 [pid 393] close(14 [pid 391] close(15 [pid 390] close(17 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(25 [pid 393] close(15 [pid 391] close(16 [pid 390] close(18 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(26 [pid 401] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 393] close(16 [pid 391] close(17 [pid 390] close(19 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(27 [pid 401] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 393] close(17 [pid 391] close(18 [pid 390] close(20 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] <... mmap resumed>) = 0x7efd4eb6c000 [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(28 [pid 401] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 393] close(18 [pid 391] close(19 [pid 390] close(21 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] <... mprotect resumed>) = 0 [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] close(29 [pid 393] close(19 [pid 391] close(20 [pid 390] close(22 [pid 388] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] rt_sigprocmask(SIG_BLOCK, ~[], [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] exit_group(0 [pid 401] <... rt_sigprocmask resumed>[], 8) = 0 [pid 394] <... futex resumed>) = ? [pid 393] close(20 [pid 392] <... futex resumed>) = ? [pid 391] close(21 [pid 390] close(23 [pid 388] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 402 attached [pid 401] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 394] +++ exited with 0 +++ [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 392] +++ exited with 0 +++ [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] set_robust_list(0x555557294760, 24 [pid 390] close(24 [pid 402] <... set_robust_list resumed>) = 0 [pid 401] <... clone3 resumed> => {parent_tid=[16]}, 88) = 16 [pid 393] close(21 [pid 391] close(22 [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 388] +++ exited with 0 +++ [pid 402] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 401] rt_sigprocmask(SIG_SETMASK, [], [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 390] close(25 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=8, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- [pid 402] <... prctl resumed>) = 0 [pid 401] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 393] close(22 [pid 391] close(23 [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] setpgid(0, 0 [pid 401] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 390] close(26 [pid 402] <... setpgid resumed>) = 0 [pid 401] <... futex resumed>) = 0 [pid 393] close(23 [pid 391] close(24 [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) ./strace-static-x86_64: Process 403 attached [pid 402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 401] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 390] close(27 [pid 403] set_robust_list(0x7efd4eb8c9a0, 24 [pid 402] <... openat resumed>) = 3 [pid 401] <... futex resumed>) = 0 [pid 393] close(24 [pid 391] close(25 [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 403] <... set_robust_list resumed>) = 0 [pid 402] write(3, "1000", 4 [pid 401] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 390] close(28 [pid 403] rt_sigprocmask(SIG_SETMASK, [], [pid 402] <... write resumed>) = 4 [pid 401] <... mmap resumed>) = 0x7efd4eb4b000 [pid 393] close(25 [pid 391] close(26 [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 303] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 403] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 402] close(3 [pid 401] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 390] close(29 [pid 303] <... openat resumed>) = 3 [pid 403] memfd_create("syzkaller", 0 [pid 402] <... close resumed>) = 0 [pid 401] <... mprotect resumed>) = 0 [pid 393] close(26 [pid 391] close(27 [pid 390] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 303] ioctl(3, LOOP_CLR_FD [pid 403] <... memfd_create resumed>) = 3 [pid 402] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] rt_sigprocmask(SIG_BLOCK, ~[], [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 390] exit_group(0 [pid 303] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 403] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 402] <... futex resumed>) = 0 [pid 401] <... rt_sigprocmask resumed>[], 8) = 0 [pid 397] <... futex resumed>) = ? [pid 395] <... futex resumed>) = ? [pid 393] close(27 [pid 391] close(28 [pid 390] <... exit_group resumed>) = ? [pid 303] close(3 [pid 403] <... mmap resumed>) = 0x7efd4674b000 [pid 402] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 401] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 397] +++ exited with 0 +++ [pid 395] +++ exited with 0 +++ [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 390] +++ exited with 0 +++ [pid 303] <... close resumed>) = 0 [pid 402] <... rt_sigaction resumed>NULL, 8) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 403] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 402] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 401] <... clone3 resumed> => {parent_tid=[17]}, 88) = 17 [pid 393] close(28 [pid 391] close(29 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 402] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 401] rt_sigprocmask(SIG_SETMASK, [], [pid 306] <... restart_syscall resumed>) = 0 [pid 303] <... clone resumed>, child_tidptr=0x555557294750) = 11 [pid 403] <... write resumed>) = 262144 [pid 402] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 401] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 403] munmap(0x7efd4674b000, 262144 [pid 402] <... mmap resumed>) = 0x7efd4eb6c000 [pid 401] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 393] close(29 [pid 391] exit_group(0 [pid 403] <... munmap resumed>) = 0 [pid 402] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 401] <... futex resumed>) = 0 [pid 398] <... futex resumed>) = ? [pid 396] <... futex resumed>) = ? [pid 393] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 391] <... exit_group resumed>) = ? [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 403] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 402] <... mprotect resumed>) = 0 [pid 401] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 398] +++ exited with 0 +++ [pid 396] +++ exited with 0 +++ [pid 393] exit_group(0 [pid 306] <... openat resumed>) = 3 [pid 403] <... openat resumed>) = 4 [pid 402] rt_sigprocmask(SIG_BLOCK, ~[], [pid 400] <... futex resumed>) = ? [pid 399] <... futex resumed>) = ? [pid 393] <... exit_group resumed>) = ? [pid 391] +++ exited with 0 +++ [pid 306] ioctl(3, LOOP_CLR_FD [pid 403] ioctl(4, LOOP_SET_FD, 3 [pid 402] <... rt_sigprocmask resumed>[], 8) = 0 [pid 400] +++ exited with 0 +++ [pid 399] +++ exited with 0 +++ [pid 306] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 402] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 306] close(3 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 393] +++ exited with 0 +++ [pid 306] <... close resumed>) = 0 [pid 302] restart_syscall(<... resuming interrupted clone ...> [pid 402] <... clone3 resumed> => {parent_tid=[12]}, 88) = 12 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] <... restart_syscall resumed>) = 0 [pid 402] rt_sigprocmask(SIG_SETMASK, [], [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 402] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 306] <... clone resumed>, child_tidptr=0x555557294750) = 14 [pid 305] <... restart_syscall resumed>) = 0 [pid 402] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 402] <... futex resumed>) = 0 [pid 302] <... openat resumed>) = 3 ./strace-static-x86_64: Process 405 attached [pid 402] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 302] ioctl(3, LOOP_CLR_FD [pid 405] set_robust_list(0x555557294760, 24 [pid 402] <... futex resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 302] <... ioctl resumed>) = 0 [pid 405] <... set_robust_list resumed>) = 0 [pid 402] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 302] close(3 [pid 405] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 402] <... mmap resumed>) = 0x7efd4eb4b000 [pid 305] <... ioctl resumed>) = 0 [pid 302] <... close resumed>) = 0 [pid 405] <... prctl resumed>) = 0 [pid 402] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 305] close(3 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 405] setpgid(0, 0 [pid 402] <... mprotect resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 405] <... setpgid resumed>) = 0 [pid 402] rt_sigprocmask(SIG_BLOCK, ~[], [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 302] <... clone resumed>, child_tidptr=0x555557294750) = 20 [pid 405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 402] <... rt_sigprocmask resumed>[], 8) = 0 ./strace-static-x86_64: Process 404 attached [pid 405] <... openat resumed>) = 3 [pid 403] <... ioctl resumed>) = 0 [pid 402] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 305] <... clone resumed>, child_tidptr=0x555557294750) = 17 ./strace-static-x86_64: Process 406 attached ./strace-static-x86_64: Process 407 attached ./strace-static-x86_64: Process 410 attached [pid 405] write(3, "1000", 4 [pid 404] set_robust_list(0x7efd4eb6b9a0, 24 [pid 403] close(3 [pid 405] <... write resumed>) = 4 [pid 404] <... set_robust_list resumed>) = 0 [pid 403] <... close resumed>) = 0 [pid 402] <... clone3 resumed> => {parent_tid=[13]}, 88) = 13 [pid 410] set_robust_list(0x7efd4eb6b9a0, 24 [pid 407] set_robust_list(0x555557294760, 24 [pid 406] set_robust_list(0x7efd4eb8c9a0, 24 [pid 405] close(3 [pid 404] rt_sigprocmask(SIG_SETMASK, [], [pid 403] mkdir("./file0", 0777 [pid 402] rt_sigprocmask(SIG_SETMASK, [], [pid 410] <... set_robust_list resumed>) = 0 [pid 407] <... set_robust_list resumed>) = 0 [pid 406] <... set_robust_list resumed>) = 0 [pid 405] <... close resumed>) = 0 [pid 404] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 403] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 402] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 410] rt_sigprocmask(SIG_SETMASK, [], [pid 407] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 406] rt_sigprocmask(SIG_SETMASK, [], [pid 405] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 404] creat("./bus", 000 [pid 403] mount("/dev/loop5", "./file0", "ext4", MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "nodiscard,barrier,nouid32,grpquota,,errors=continue" [pid 402] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 410] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 407] <... prctl resumed>) = 0 [pid 406] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 405] <... futex resumed>) = 0 [pid 404] <... creat resumed>) = 3 [pid 402] <... futex resumed>) = 0 [pid 405] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 404] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 408 attached [pid 410] creat("./bus", 000 [pid 407] setpgid(0, 0 [pid 406] memfd_create("syzkaller", 0 [pid 405] <... rt_sigaction resumed>NULL, 8) = 0 [pid 404] <... futex resumed>) = 1 [pid 401] <... futex resumed>) = 0 ./strace-static-x86_64: Process 409 attached [pid 410] <... creat resumed>) = 3 [pid 408] set_robust_list(0x555557294760, 24 [pid 407] <... setpgid resumed>) = 0 [pid 406] <... memfd_create resumed>) = 4 [pid 405] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 404] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 401] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 410] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] set_robust_list(0x555557294760, 24 [pid 408] <... set_robust_list resumed>) = 0 [pid 407] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 406] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 405] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 404] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 401] <... futex resumed>) = 0 [pid 410] <... futex resumed>) = 1 [pid 409] <... set_robust_list resumed>) = 0 [pid 408] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 407] <... openat resumed>) = 3 [pid 406] <... mmap resumed>) = 0x7efd4674b000 [pid 405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 404] mount("/dev/loop5", "./bus", NULL, MS_BIND, NULL [pid 402] <... futex resumed>) = 0 [pid 401] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 410] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 409] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 408] <... prctl resumed>) = 0 [pid 407] write(3, "1000", 4 [pid 405] <... mmap resumed>) = 0x7efd4eb6c000 [pid 402] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] <... prctl resumed>) = 0 [pid 408] setpgid(0, 0 [pid 406] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 405] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 402] <... futex resumed>) = 0 [pid 410] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 409] setpgid(0, 0 [pid 408] <... setpgid resumed>) = 0 [pid 407] <... write resumed>) = 4 [pid 405] <... mprotect resumed>) = 0 [pid 404] <... mount resumed>) = 0 [pid 402] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 410] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 409] <... setpgid resumed>) = 0 [pid 408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 407] close(3 [pid 405] rt_sigprocmask(SIG_BLOCK, ~[], [pid 404] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 410] <... mount resumed>) = 0 [pid 409] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 408] <... openat resumed>) = 3 [pid 407] <... close resumed>) = 0 [pid 406] <... write resumed>) = 262144 [pid 405] <... rt_sigprocmask resumed>[], 8) = 0 [pid 404] <... futex resumed>) = 1 [pid 401] <... futex resumed>) = 0 [pid 410] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] <... openat resumed>) = 3 [pid 408] write(3, "1000", 4 [pid 407] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 406] munmap(0x7efd4674b000, 262144 [pid 405] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 404] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 401] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 410] <... futex resumed>) = 1 [pid 409] write(3, "1000", 4 [pid 408] <... write resumed>) = 4 [pid 407] <... futex resumed>) = 0 [pid 406] <... munmap resumed>) = 0 [pid 404] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 402] <... futex resumed>) = 0 [pid 401] <... futex resumed>) = 0 [pid 410] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 409] <... write resumed>) = 4 [pid 408] close(3 [pid 407] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 406] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 405] <... clone3 resumed> => {parent_tid=[12]}, 88) = 12 [pid 404] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 402] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 410] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 409] close(3 [pid 408] <... close resumed>) = 0 [pid 407] <... rt_sigaction resumed>NULL, 8) = 0 [pid 406] <... openat resumed>) = 5 [pid 405] rt_sigprocmask(SIG_SETMASK, [], [pid 404] <... open resumed>) = 5 [pid 402] <... futex resumed>) = 0 [pid 410] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 409] <... close resumed>) = 0 [pid 408] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 407] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 406] ioctl(5, LOOP_SET_FD, 4 [pid 405] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 404] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 410] <... open resumed>) = 6 [pid 409] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 408] <... futex resumed>) = 0 [pid 407] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 405] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] <... futex resumed>) = 0 [pid 408] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 405] <... futex resumed>) = 0 [pid 409] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 408] <... rt_sigaction resumed>NULL, 8) = 0 [pid 405] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] <... rt_sigaction resumed>NULL, 8) = 0 [pid 408] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 405] <... futex resumed>) = 0 [pid 409] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 408] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 405] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 409] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 408] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 405] <... mmap resumed>) = 0x7efd4eb4b000 [pid 409] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 408] <... mmap resumed>) = 0x7efd4eb6c000 [pid 405] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 409] <... mmap resumed>) = 0x7efd4eb6c000 [pid 408] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 405] <... mprotect resumed>) = 0 ./strace-static-x86_64: Process 412 attached [pid 409] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 408] <... mprotect resumed>) = 0 [pid 405] rt_sigprocmask(SIG_BLOCK, ~[], [pid 412] set_robust_list(0x7efd4eb8c9a0, 24 [pid 409] <... mprotect resumed>) = 0 [pid 408] rt_sigprocmask(SIG_BLOCK, ~[], [pid 405] <... rt_sigprocmask resumed>[], 8) = 0 [pid 412] <... set_robust_list resumed>) = 0 [pid 409] rt_sigprocmask(SIG_BLOCK, ~[], [pid 408] <... rt_sigprocmask resumed>[], 8) = 0 [pid 405] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 412] rt_sigprocmask(SIG_SETMASK, [], [pid 410] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] <... rt_sigprocmask resumed>[], 8) = 0 [pid 408] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 407] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 404] <... futex resumed>) = 1 [pid 401] <... futex resumed>) = 0 [pid 412] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 410] <... futex resumed>) = 1 [pid 409] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 407] <... mmap resumed>) = 0x7efd4eb6c000 [pid 406] <... ioctl resumed>) = 0 [pid 405] <... clone3 resumed> => {parent_tid=[13]}, 88) = 13 [pid 404] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 402] <... futex resumed>) = 0 [pid 401] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] memfd_create("syzkaller", 0 [pid 410] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 408] <... clone3 resumed> => {parent_tid=[21]}, 88) = 21 [pid 407] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 405] rt_sigprocmask(SIG_SETMASK, [], [pid 404] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 402] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] <... futex resumed>) = 0 [pid 412] <... memfd_create resumed>) = 3 [pid 410] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 409] <... clone3 resumed> => {parent_tid=[18]}, 88) = 18 [pid 408] rt_sigprocmask(SIG_SETMASK, [], [pid 407] <... mprotect resumed>) = 0 [pid 405] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 404] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 5, 0 [pid 402] <... futex resumed>) = 0 [pid 401] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 412] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 410] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 409] rt_sigprocmask(SIG_SETMASK, [], [pid 408] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 405] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 412] <... mmap resumed>) = 0x7efd4674b000 [pid 409] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 408] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 412] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 409] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 408] <... futex resumed>) = 0 [pid 405] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 416 attached [pid 412] <... write resumed>) = 262144 [pid 409] <... futex resumed>) = 0 [pid 408] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 416] set_robust_list(0x7efd4eb8c9a0, 24 [pid 412] munmap(0x7efd4674b000, 262144 [pid 409] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 408] <... futex resumed>) = 0 ./strace-static-x86_64: Process 415 attached [pid 416] <... set_robust_list resumed>) = 0 [pid 412] <... munmap resumed>) = 0 [pid 409] <... futex resumed>) = 0 [pid 408] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 416] rt_sigprocmask(SIG_SETMASK, [], [pid 415] set_robust_list(0x7efd4eb8c9a0, 24 [pid 412] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 409] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 408] <... mmap resumed>) = 0x7efd4eb4b000 ./strace-static-x86_64: Process 414 attached [pid 416] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 415] <... set_robust_list resumed>) = 0 [pid 412] <... openat resumed>) = 4 [pid 409] <... mmap resumed>) = 0x7efd4eb4b000 [ 22.278513][ T403] loop5: detected capacity change from 0 to 512 [ 22.304576][ T406] loop4: detected capacity change from 0 to 512 [ 22.314475][ T403] EXT4-fs (loop5): mounted filesystem without journal. Quota mode: writeback. [pid 408] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 416] memfd_create("syzkaller", 0 [pid 415] rt_sigprocmask(SIG_SETMASK, [], [pid 414] set_robust_list(0x7efd4eb6b9a0, 24 [pid 412] ioctl(4, LOOP_SET_FD, 3 [pid 409] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 408] <... mprotect resumed>) = 0 [pid 416] <... memfd_create resumed>) = 3 [pid 415] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 414] <... set_robust_list resumed>) = 0 [pid 410] <... mmap resumed>) = 0x20000000 [pid 409] <... mprotect resumed>) = 0 [pid 408] rt_sigprocmask(SIG_BLOCK, ~[], [pid 407] rt_sigprocmask(SIG_BLOCK, ~[], [pid 406] close(4 [pid 404] <... mmap resumed>) = 0x20000000 [pid 416] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 415] memfd_create("syzkaller", 0 [pid 414] rt_sigprocmask(SIG_SETMASK, [], [pid 409] rt_sigprocmask(SIG_BLOCK, ~[], [pid 408] <... rt_sigprocmask resumed>[], 8) = 0 [pid 416] <... mmap resumed>) = 0x7efd4674b000 [pid 415] <... memfd_create resumed>) = 3 [pid 414] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 409] <... rt_sigprocmask resumed>[], 8) = 0 [pid 408] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 416] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 415] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 414] creat("./bus", 000 [pid 409] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 408] <... clone3 resumed> => {parent_tid=[22]}, 88) = 22 [pid 409] <... clone3 resumed> => {parent_tid=[19]}, 88) = 19 [pid 408] rt_sigprocmask(SIG_SETMASK, [], [pid 409] rt_sigprocmask(SIG_SETMASK, [], [pid 408] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 415] <... mmap resumed>) = 0x7efd4674b000 [pid 409] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 408] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 416] <... write resumed>) = 262144 [pid 415] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 414] <... creat resumed>) = 5 [pid 409] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 408] <... futex resumed>) = 0 [pid 414] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] <... futex resumed>) = 0 [pid 408] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 416] munmap(0x7efd4674b000, 262144 [pid 415] <... write resumed>) = 262144 [pid 414] <... futex resumed>) = 1 [pid 410] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 407] <... rt_sigprocmask resumed>[], 8) = 0 [pid 405] <... futex resumed>) = 0 [pid 404] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 416] <... munmap resumed>) = 0 [pid 415] munmap(0x7efd4674b000, 262144 [pid 414] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 410] <... futex resumed>) = 1 [pid 407] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 406] <... close resumed>) = 0 [pid 405] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 404] <... futex resumed>) = 1 [pid 402] <... futex resumed>) = 0 [pid 401] <... futex resumed>) = 0 [pid 414] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 410] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 406] mkdir(0x20000000, 0777 [pid 405] <... futex resumed>) = 0 [pid 404] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 402] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 401] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 410] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 407] <... clone3 resumed> => {parent_tid=[15]}, 88) = 15 [pid 405] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 402] <... futex resumed>) = 0 [pid 401] <... futex resumed>) = 0 [pid 414] <... mount resumed>) = 0 [pid 410] memfd_create("syzkaller", 0 [pid 407] rt_sigprocmask(SIG_SETMASK, [], [pid 406] <... mkdir resumed>) = -1 ENOENT (No such file or directory) [pid 404] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 414] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 410] <... memfd_create resumed>) = 4 [pid 407] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 406] mount("/dev/loop4", 0x20000000, 0x200005c0, MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"... [pid 404] memfd_create("syzkaller", 0./strace-static-x86_64: Process 418 attached ./strace-static-x86_64: Process 417 attached [pid 416] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 415] <... munmap resumed>) = 0 [pid 414] <... futex resumed>) = 1 [pid 410] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 407] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 406] <... mount resumed>) = -1 ENODEV (No such device) [pid 405] <... futex resumed>) = 0 [pid 404] <... memfd_create resumed>) = 6 [pid 418] set_robust_list(0x7efd4eb6b9a0, 24 [pid 417] set_robust_list(0x7efd4eb6b9a0, 24 [pid 416] <... openat resumed>) = 4 [pid 415] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 414] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 410] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 407] <... futex resumed>) = 0 [pid 406] ioctl(5, LOOP_CLR_FD [pid 405] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 404] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 418] <... set_robust_list resumed>) = 0 [pid 417] <... set_robust_list resumed>) = 0 [pid 416] ioctl(4, LOOP_SET_FD, 3 [pid 415] <... openat resumed>) = 4 [pid 414] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 410] close(4 [pid 406] <... ioctl resumed>) = 0 [pid 405] <... futex resumed>) = 0 ./strace-static-x86_64: Process 419 attached [pid 418] rt_sigprocmask(SIG_SETMASK, [], [pid 417] rt_sigprocmask(SIG_SETMASK, [], [pid 416] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 415] ioctl(4, LOOP_SET_FD, 3 [pid 414] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 410] <... close resumed>) = 0 [pid 407] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 406] close(5 [pid 405] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 404] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 419] set_robust_list(0x7efd4eb8c9a0, 24 [pid 414] <... open resumed>) = 6 [pid 410] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 407] <... futex resumed>) = 0 [pid 406] <... close resumed>) = 0 [pid 404] close(6 [pid 403] <... mount resumed>) = 0 [pid 416] ioctl(4, LOOP_CLR_FD [pid 414] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 410] <... futex resumed>) = 0 [pid 407] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 406] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 404] <... close resumed>) = 0 [pid 403] openat(AT_FDCWD, 0x20000000, O_RDONLY|O_DIRECTORY [pid 418] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 417] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 416] <... ioctl resumed>) = 0 [pid 415] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 414] <... futex resumed>) = 1 [pid 410] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 407] <... mmap resumed>) = 0x7efd4eb4b000 [pid 406] <... futex resumed>) = 0 [pid 405] <... futex resumed>) = 0 [pid 404] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 418] creat("./bus", 000 [pid 417] creat("./bus", 000 [pid 415] ioctl(4, LOOP_CLR_FD [pid 414] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 407] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 406] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 405] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 404] <... futex resumed>) = 0 [pid 403] <... openat resumed>) = 6 [pid 419] <... set_robust_list resumed>) = 0 [pid 412] <... ioctl resumed>) = 0 [pid 407] <... mprotect resumed>) = 0 [pid 404] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 407] rt_sigprocmask(SIG_BLOCK, ~[], [pid 403] chdir(0x20000000 [pid 407] <... rt_sigprocmask resumed>[], 8) = 0 [pid 403] <... chdir resumed>) = 0 [pid 407] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 403] ioctl(4, LOOP_CLR_FD) = 0 [pid 407] <... clone3 resumed> => {parent_tid=[16]}, 88) = 16 [pid 403] close(4 [pid 407] rt_sigprocmask(SIG_SETMASK, [], [pid 403] <... close resumed>) = 0 [pid 407] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 403] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 407] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 403] <... futex resumed>) = 0 [pid 407] <... futex resumed>) = 0 [pid 403] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 407] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 418] <... creat resumed>) = 5 [pid 417] <... creat resumed>) = 5 [pid 415] <... ioctl resumed>) = 0 [pid 414] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 405] <... futex resumed>) = 0 [pid 414] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 405] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 402] close(3 [pid 401] close(3./strace-static-x86_64: Process 420 attached [pid 419] rt_sigprocmask(SIG_SETMASK, [], [pid 418] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 417] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] <... mmap resumed>) = 0x20000000 [pid 412] close(3 [pid 402] <... close resumed>) = 0 [pid 401] <... close resumed>) = 0 [pid 420] set_robust_list(0x7efd4eb6b9a0, 24 [pid 419] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 418] <... futex resumed>) = 1 [pid 417] <... futex resumed>) = 1 [pid 416] ioctl(4, LOOP_SET_FD, 3 [pid 415] ioctl(4, LOOP_SET_FD, 3 [pid 414] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] <... close resumed>) = 0 [pid 409] <... futex resumed>) = 0 [pid 408] <... futex resumed>) = 0 [pid 402] close(4 [pid 401] close(4 [pid 418] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 417] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 416] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 415] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 414] <... futex resumed>) = 1 [pid 409] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 408] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... futex resumed>) = 0 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 418] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 417] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 416] close(4 [pid 415] close(4 [pid 414] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 409] <... futex resumed>) = 0 [pid 408] <... futex resumed>) = 0 [pid 405] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] close(5 [pid 401] close(5 [pid 419] memfd_create("syzkaller", 0 [pid 418] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 415] <... close resumed>) = 0 [pid 409] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 408] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 405] <... futex resumed>) = 0 [pid 401] <... close resumed>) = 0 [pid 419] <... memfd_create resumed>) = 3 [pid 418] <... mount resumed>) = 0 [pid 417] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 416] <... close resumed>) = 0 [pid 414] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 415] close(3 [pid 412] mkdir(0x20000000, 0777 [pid 401] close(6 [pid 418] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 417] <... mount resumed>) = 0 [pid 402] close(6 [pid 416] close(3 [pid 414] memfd_create("syzkaller", 0 [pid 401] <... close resumed>) = 0 [pid 415] <... close resumed>) = 0 [pid 402] <... close resumed>) = 0 [pid 401] close(7 [pid 419] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 418] <... futex resumed>) = 1 [pid 417] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 416] <... close resumed>) = 0 [pid 415] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] <... memfd_create resumed>) = 3 [pid 412] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 409] <... futex resumed>) = 0 [pid 402] close(7 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 420] <... set_robust_list resumed>) = 0 [pid 419] <... mmap resumed>) = 0x7efd4674b000 [pid 418] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 417] <... futex resumed>) = 1 [pid 416] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 415] <... futex resumed>) = 0 [pid 414] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 412] mount("/dev/loop0", 0x20000000, 0x200005c0, MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"... [pid 409] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 408] <... futex resumed>) = 0 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] close(8 [pid 419] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 418] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 417] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 416] <... futex resumed>) = 0 [pid 414] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 415] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 409] <... futex resumed>) = 0 [pid 408] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] close(8 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 418] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 416] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 415] <... open resumed>) = 3 [pid 414] close(3 [pid 412] <... mount resumed>) = -1 ENODEV (No such device) [pid 409] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 408] <... futex resumed>) = 0 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] close(9 [pid 418] <... open resumed>) = 3 [pid 415] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 414] <... close resumed>) = 0 [pid 412] ioctl(4, LOOP_CLR_FD [pid 408] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 402] close(9 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 418] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 415] <... futex resumed>) = 0 [pid 414] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] <... ioctl resumed>) = 0 [pid 408] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] close(10 [pid 419] <... write resumed>) = 262144 [pid 418] <... futex resumed>) = 1 [pid 415] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 414] <... futex resumed>) = 0 [pid 412] close(4 [pid 409] <... futex resumed>) = 0 [pid 408] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] close(10 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 418] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 415] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 414] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 412] <... close resumed>) = 0 [pid 409] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 408] <... futex resumed>) = 0 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [ 22.322825][ T412] loop0: detected capacity change from 0 to 512 [ 22.329612][ T403] ext4 filesystem being mounted at /root/file0 supports timestamps until 2038 (0x7fffffff) [pid 401] close(11 [pid 420] rt_sigprocmask(SIG_SETMASK, [], [pid 419] munmap(0x7efd4674b000, 262144 [pid 416] <... futex resumed>) = 0 [pid 415] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 3, 0 [pid 412] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] <... futex resumed>) = 1 [pid 408] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 402] close(11 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 420] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 419] <... munmap resumed>) = 0 [pid 416] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 3, 0 [pid 415] <... mmap resumed>) = 0x20000000 [pid 412] <... futex resumed>) = 0 [pid 409] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 405] close(3 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] close(12 [pid 420] creat("./bus", 000 [pid 419] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 416] <... mmap resumed>) = 0x20000000 [pid 415] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 412] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] close(12 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 420] <... creat resumed>) = 5 [pid 419] <... openat resumed>) = 4 [pid 416] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 415] <... futex resumed>) = 1 [pid 408] <... futex resumed>) = 0 [pid 405] close(4 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] close(13 [pid 420] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 419] ioctl(4, LOOP_SET_FD, 3 [pid 416] <... futex resumed>) = 1 [pid 415] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 409] <... futex resumed>) = 0 [pid 408] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] close(13 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 420] <... futex resumed>) = 1 [pid 416] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 415] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 409] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 408] <... futex resumed>) = 0 [pid 407] <... futex resumed>) = 0 [pid 405] close(5) = 0 [pid 405] close(6) = 0 [pid 420] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 419] <... ioctl resumed>) = 0 [pid 416] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 415] memfd_create("syzkaller", 0 [pid 409] <... futex resumed>) = 0 [pid 407] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] close(7 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] close(14 [pid 420] <... mount resumed>) = 0 [pid 419] close(3 [pid 416] memfd_create("syzkaller", 0 [pid 415] <... memfd_create resumed>) = 4 [pid 407] <... futex resumed>) = 0 [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] close(14 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 420] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 419] <... close resumed>) = 0 [pid 416] <... memfd_create resumed>) = 4 [pid 415] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 407] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 405] close(8 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] close(15 [pid 420] <... futex resumed>) = 0 [pid 419] mkdir("./file0", 0777 [pid 416] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 415] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 407] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] close(15 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 420] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 419] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 416] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 415] close(4 [pid 407] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] close(16 [pid 405] close(9 [pid 420] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 419] mount("/dev/loop1", "./file0", "ext4", MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "nodiscard,barrier,nouid32,grpquota,,errors=continue" [pid 416] close(4 [pid 415] <... close resumed>) = 0 [pid 407] <... futex resumed>) = 0 [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] close(16 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 420] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 416] <... close resumed>) = 0 [pid 415] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 408] close(3 [pid 407] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 405] close(10 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] close(17 [pid 420] <... open resumed>) = 3 [pid 416] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 415] <... futex resumed>) = 0 [pid 408] <... close resumed>) = 0 [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] close(17 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 420] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 416] <... futex resumed>) = 0 [pid 415] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 408] close(4 [pid 405] close(11 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] close(18 [pid 420] <... futex resumed>) = 1 [pid 416] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 409] close(3 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 407] <... futex resumed>) = 0 [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] close(18 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 420] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 409] <... close resumed>) = 0 [pid 408] close(5 [pid 407] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] close(12 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] close(19 [pid 420] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 409] close(4 [pid 408] <... close resumed>) = 0 [pid 407] <... futex resumed>) = 0 [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] close(19 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 420] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 3, 0 [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] close(6 [pid 407] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 405] close(13 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] close(20 [pid 420] <... mmap resumed>) = 0x20000000 [pid 409] close(5 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] close(20 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 420] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] <... close resumed>) = 0 [pid 408] close(7 [pid 405] close(14 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] close(21 [pid 420] <... futex resumed>) = 1 [pid 409] close(6 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 407] <... futex resumed>) = 0 [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] close(21 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 420] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] close(8 [pid 407] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 405] close(15 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] close(22 [pid 420] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 409] close(7 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 407] <... futex resumed>) = 0 [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] close(22 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 420] memfd_create("syzkaller", 0 [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] close(9 [pid 405] close(16 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] close(23 [pid 420] <... memfd_create resumed>) = 6 [pid 409] close(8 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] close(23 [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 420] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] close(10 [pid 405] close(17 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] close(24 [pid 420] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 409] close(9 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] close(24 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 420] close(6 [pid 419] <... mount resumed>) = -1 EINVAL (Invalid argument) [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] close(11 [pid 405] close(18 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] close(25 [pid 420] <... close resumed>) = 0 [pid 419] ioctl(4, LOOP_CLR_FD [pid 409] close(10 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] close(25 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 420] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 419] <... ioctl resumed>) = 0 [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] close(12 [pid 405] close(19 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] close(26 [pid 420] <... futex resumed>) = 0 [pid 419] close(4 [pid 409] close(11 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] close(26 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 420] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 419] <... close resumed>) = 0 [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] close(13 [pid 405] close(20 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] close(27 [pid 419] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 409] close(12 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 407] close(3 [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] close(27 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 419] <... futex resumed>) = 0 [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] close(14 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 407] <... close resumed>) = 0 [pid 401] close(28 [pid 405] close(21 [pid 419] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 409] close(13 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 407] close(4 [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] close(28 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] close(15 [pid 407] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 405] close(22 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] close(29 [pid 409] close(14 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 407] close(5 [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] close(29 [pid 401] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] close(16 [pid 407] <... close resumed>) = 0 [pid 405] close(23 [pid 402] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 401] exit_group(0 [pid 409] close(15 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 407] close(6 [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 404] <... futex resumed>) = ? [pid 403] <... futex resumed>) = ? [pid 402] exit_group(0 [pid 401] <... exit_group resumed>) = ? [pid 410] <... futex resumed>) = ? [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] close(17 [pid 407] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 406] <... futex resumed>) = ? [pid 405] close(24 [pid 404] +++ exited with 0 +++ [pid 403] +++ exited with 0 +++ [pid 402] <... exit_group resumed>) = ? [pid 401] +++ exited with 0 +++ [pid 410] +++ exited with 0 +++ [pid 409] close(16 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 407] close(7 [pid 406] +++ exited with 0 +++ [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 402] +++ exited with 0 +++ [pid 301] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=15, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] close(18 [pid 407] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 405] close(25 [pid 409] close(17 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 407] close(8 [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] close(19 [pid 407] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 405] close(26 [pid 304] restart_syscall(<... resuming interrupted clone ...> [pid 301] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 409] close(18 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 407] close(9 [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] <... openat resumed>) = 3 [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] close(20 [pid 407] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 405] close(27 [pid 304] <... restart_syscall resumed>) = 0 [pid 301] ioctl(3, LOOP_CLR_FD [pid 409] close(19 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 407] close(10 [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] <... ioctl resumed>) = 0 [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] close(21 [pid 407] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 405] close(28 [pid 301] close(3 [pid 409] close(20 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 407] close(11 [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] <... close resumed>) = 0 [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] close(22 [pid 407] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 405] close(29 [pid 304] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 301] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 409] close(21 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 407] close(12 [pid 405] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 407] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 405] exit_group(0 [pid 301] <... clone resumed>, child_tidptr=0x555557294750) = 18 [pid 407] close(13 [pid 405] <... exit_group resumed>) = ? [pid 407] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 407] close(14) = -1 EBADF (Bad file descriptor) [pid 407] close(15) = -1 EBADF (Bad file descriptor) [pid 407] close(16) = -1 EBADF (Bad file descriptor) [pid 407] close(17) = -1 EBADF (Bad file descriptor) [pid 407] close(18) = -1 EBADF (Bad file descriptor) [pid 407] close(19) = -1 EBADF (Bad file descriptor) [pid 407] close(20) = -1 EBADF (Bad file descriptor) [pid 407] close(21) = -1 EBADF (Bad file descriptor) [pid 407] close(22) = -1 EBADF (Bad file descriptor) [pid 407] close(23 [pid 304] <... openat resumed>) = 3 [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] close(23 [pid 414] <... futex resumed>) = ? [pid 412] <... futex resumed>) = ? [pid 409] close(22 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 407] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 304] ioctl(3, LOOP_CLR_FD [pid 414] +++ exited with 0 +++ [pid 407] close(24) = -1 EBADF (Bad file descriptor) [pid 407] close(25) = -1 EBADF (Bad file descriptor) [pid 407] close(26) = -1 EBADF (Bad file descriptor) [pid 407] close(27) = -1 EBADF (Bad file descriptor) [pid 407] close(28) = -1 EBADF (Bad file descriptor) [pid 407] close(29) = -1 EBADF (Bad file descriptor) [pid 407] exit_group(0) = ? [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] close(24 [pid 420] <... futex resumed>) = ? [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 420] +++ exited with 0 +++ [pid 304] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 408] close(25 [pid 419] <... futex resumed>) = ? [pid 409] close(23 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 304] close(3 [pid 412] +++ exited with 0 +++ [pid 405] +++ exited with 0 +++ [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] close(26 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=11, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 304] <... close resumed>) = 0 [pid 419] +++ exited with 0 +++ [pid 407] +++ exited with 0 +++ [pid 409] close(24) = -1 EBADF (Bad file descriptor) [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] close(27 [pid 409] close(25 [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 303] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 409] close(26 [pid 408] close(28 [pid 306] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 422 attached [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] <... restart_syscall resumed>) = 0 [pid 303] <... openat resumed>) = 3 [pid 409] close(27 [pid 408] close(29 [pid 304] <... clone resumed>, child_tidptr=0x555557294750) = 14 [pid 303] ioctl(3, LOOP_CLR_FD [pid 422] set_robust_list(0x555557294760, 24 [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 303] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 422] <... set_robust_list resumed>) = 0 [pid 409] close(28 [pid 408] exit_group(0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 303] close(3 [pid 422] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 417] <... futex resumed>) = ? [pid 415] <... futex resumed>) = ? [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] <... exit_group resumed>) = ? [pid 306] <... openat resumed>) = 3 [pid 303] <... close resumed>) = 0 [pid 422] <... prctl resumed>) = 0 [pid 417] +++ exited with 0 +++ [pid 415] +++ exited with 0 +++ [pid 409] close(29 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 422] setpgid(0, 0 [pid 409] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 408] +++ exited with 0 +++ [pid 306] ioctl(3, LOOP_CLR_FD [pid 422] <... setpgid resumed>) = 0 [pid 409] exit_group(0 [pid 306] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 303] <... clone resumed>, child_tidptr=0x555557294750) = 14 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 422] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 418] <... futex resumed>) = ? [pid 416] <... futex resumed>) = ? [pid 409] <... exit_group resumed>) = ? [pid 306] close(3 [pid 418] +++ exited with 0 +++ ./strace-static-x86_64: Process 421 attached [pid 416] +++ exited with 0 +++ [pid 409] +++ exited with 0 +++ [pid 306] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 421] set_robust_list(0x555557294760, 24) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 302] <... openat resumed>) = 3 [pid 306] <... clone resumed>, child_tidptr=0x555557294750) = 17 [pid 422] <... openat resumed>) = 3 [pid 302] ioctl(3, LOOP_CLR_FD [pid 422] write(3, "1000", 4 [pid 305] <... restart_syscall resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 422] <... write resumed>) = 4 [pid 302] close(3 [pid 422] close(3 [pid 302] <... close resumed>) = 0 [pid 422] <... close resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 422] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 305] <... openat resumed>) = 3 [pid 421] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 424 attached [pid 422] <... futex resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 424] set_robust_list(0x555557294760, 24 [pid 422] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 305] <... ioctl resumed>) = 0 [pid 302] <... clone resumed>, child_tidptr=0x555557294750) = 23 ./strace-static-x86_64: Process 423 attached [pid 424] <... set_robust_list resumed>) = 0 [pid 422] <... rt_sigaction resumed>NULL, 8) = 0 [pid 305] close(3 [pid 424] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 423] set_robust_list(0x555557294760, 24 [pid 422] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 305] <... close resumed>) = 0 [pid 424] <... prctl resumed>) = 0 [pid 423] <... set_robust_list resumed>) = 0 [pid 422] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 422] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 421] <... prctl resumed>) = 0 [pid 421] setpgid(0, 0 [pid 305] <... clone resumed>, child_tidptr=0x555557294750) = 20 [pid 424] setpgid(0, 0 [pid 422] <... mmap resumed>) = 0x7efd4eb6c000 [pid 421] <... setpgid resumed>) = 0 [pid 424] <... setpgid resumed>) = 0 [pid 423] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 422] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 424] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 423] <... prctl resumed>) = 0 [pid 422] <... mprotect resumed>) = 0 [pid 421] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 423] setpgid(0, 0 [pid 422] rt_sigprocmask(SIG_BLOCK, ~[], [pid 421] <... openat resumed>) = 3 [pid 424] <... openat resumed>) = 3 [pid 424] write(3, "1000", 4 [pid 423] <... setpgid resumed>) = 0 [pid 422] <... rt_sigprocmask resumed>[], 8) = 0 [pid 421] write(3, "1000", 4./strace-static-x86_64: Process 425 attached [pid 424] <... write resumed>) = 4 [pid 423] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 422] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 421] <... write resumed>) = 4 [pid 424] close(3 [pid 421] close(3 [pid 423] <... openat resumed>) = 3 [pid 425] set_robust_list(0x555557294760, 24 [pid 424] <... close resumed>) = 0 [pid 423] write(3, "1000", 4 [pid 422] <... clone3 resumed> => {parent_tid=[15]}, 88) = 15 [pid 421] <... close resumed>) = 0 [pid 422] rt_sigprocmask(SIG_SETMASK, [], [pid 424] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] <... write resumed>) = 4 [pid 422] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 425] <... set_robust_list resumed>) = 0 [pid 424] <... futex resumed>) = 0 [pid 423] close(3 [pid 422] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 425] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 424] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 423] <... close resumed>) = 0 [pid 422] <... futex resumed>) = 0 [pid 421] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 426 attached [pid 425] <... prctl resumed>) = 0 [pid 424] <... rt_sigaction resumed>NULL, 8) = 0 [pid 423] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 422] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] <... futex resumed>) = 0 [pid 421] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, NULL, 8) = 0 [pid 421] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 421] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb6c000 [pid 421] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 421] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 422] <... futex resumed>) = 0 [pid 426] set_robust_list(0x555557294760, 24 [pid 425] setpgid(0, 0 [pid 424] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 423] <... futex resumed>) = 0 [pid 422] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 421] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0}./strace-static-x86_64: Process 427 attached [pid 426] <... set_robust_list resumed>) = 0 [pid 425] <... setpgid resumed>) = 0 [pid 424] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 423] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 422] <... mmap resumed>) = 0x7efd4eb4b000 [pid 425] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 424] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 423] <... rt_sigaction resumed>NULL, 8) = 0 [pid 422] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 421] <... clone3 resumed> => {parent_tid=[19]}, 88) = 19 [pid 427] set_robust_list(0x7efd4eb8c9a0, 24 [pid 426] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 424] <... mmap resumed>) = 0x7efd4eb6c000 [pid 423] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 422] <... mprotect resumed>) = 0 [pid 421] rt_sigprocmask(SIG_SETMASK, [], [pid 425] <... openat resumed>) = 3 [pid 427] <... set_robust_list resumed>) = 0 [pid 426] <... prctl resumed>) = 0 [pid 424] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 425] write(3, "1000", 4 [pid 423] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 422] rt_sigprocmask(SIG_BLOCK, ~[], [pid 421] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 427] rt_sigprocmask(SIG_SETMASK, [], [pid 426] setpgid(0, 0 [pid 425] <... write resumed>) = 4 [pid 424] <... mprotect resumed>) = 0 [pid 423] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 422] <... rt_sigprocmask resumed>[], 8) = 0 [pid 421] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 427] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 426] <... setpgid resumed>) = 0 [pid 425] close(3 [pid 424] rt_sigprocmask(SIG_BLOCK, ~[], [pid 423] <... mmap resumed>) = 0x7efd4eb6c000 [pid 422] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 421] <... futex resumed>) = 0 [pid 426] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 425] <... close resumed>) = 0 [pid 424] <... rt_sigprocmask resumed>[], 8) = 0 [pid 423] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 421] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 427] memfd_create("syzkaller", 0 [pid 426] <... openat resumed>) = 3 [pid 425] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 423] <... mprotect resumed>) = 0 [pid 422] <... clone3 resumed> => {parent_tid=[16]}, 88) = 16 [pid 421] <... futex resumed>) = 0 [pid 427] <... memfd_create resumed>) = 3 [pid 426] write(3, "1000", 4 [pid 425] <... futex resumed>) = 0 [pid 423] rt_sigprocmask(SIG_BLOCK, ~[], [pid 422] rt_sigprocmask(SIG_SETMASK, [], [pid 421] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 427] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 426] <... write resumed>) = 4 [pid 425] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 424] <... clone3 resumed> => {parent_tid=[18]}, 88) = 18 [pid 423] <... rt_sigprocmask resumed>[], 8) = 0 [pid 422] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 421] <... mmap resumed>) = 0x7efd4eb4b000 ./strace-static-x86_64: Process 429 attached ./strace-static-x86_64: Process 428 attached [pid 427] <... mmap resumed>) = 0x7efd4674b000 [pid 426] close(3 [pid 425] <... rt_sigaction resumed>NULL, 8) = 0 [pid 424] rt_sigprocmask(SIG_SETMASK, [], [pid 423] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 422] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 424] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 422] <... futex resumed>) = 0 [pid 421] <... mprotect resumed>) = 0 [pid 426] <... close resumed>) = 0 [pid 425] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 424] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] <... clone3 resumed> => {parent_tid=[15]}, 88) = 15 [pid 422] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 421] rt_sigprocmask(SIG_BLOCK, ~[], [pid 429] set_robust_list(0x7efd4eb6b9a0, 24 [pid 428] set_robust_list(0x7efd4eb8c9a0, 24 [pid 427] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 426] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 425] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 424] <... futex resumed>) = 0 [pid 423] rt_sigprocmask(SIG_SETMASK, [], [pid 421] <... rt_sigprocmask resumed>[], 8) = 0 [pid 426] <... futex resumed>) = 0 [pid 425] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 424] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 421] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 426] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 425] <... mmap resumed>) = 0x7efd4eb6c000 [pid 424] <... futex resumed>) = 0 [pid 423] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 431 attached ./strace-static-x86_64: Process 430 attached [pid 429] <... set_robust_list resumed>) = 0 [pid 428] <... set_robust_list resumed>) = 0 [pid 427] <... write resumed>) = 262144 [pid 426] <... rt_sigaction resumed>NULL, 8) = 0 [pid 425] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 424] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 423] <... futex resumed>) = 0 [pid 421] <... clone3 resumed> => {parent_tid=[20]}, 88) = 20 [pid 431] set_robust_list(0x7efd4eb8c9a0, 24 [pid 430] set_robust_list(0x7efd4eb8c9a0, 24 [pid 429] rt_sigprocmask(SIG_SETMASK, [], [pid 428] rt_sigprocmask(SIG_SETMASK, [], [pid 427] munmap(0x7efd4674b000, 262144 [pid 426] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 425] <... mprotect resumed>) = 0 [pid 424] <... mmap resumed>) = 0x7efd4eb4b000 [pid 423] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] rt_sigprocmask(SIG_SETMASK, [], [pid 431] <... set_robust_list resumed>) = 0 [pid 426] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 425] rt_sigprocmask(SIG_BLOCK, ~[], [pid 424] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 423] <... futex resumed>) = 0 [pid 421] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 431] rt_sigprocmask(SIG_SETMASK, [], [pid 430] <... set_robust_list resumed>) = 0 [pid 429] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 428] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 427] <... munmap resumed>) = 0 [pid 426] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 425] <... rt_sigprocmask resumed>[], 8) = 0 [pid 424] <... mprotect resumed>) = 0 [pid 423] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [ 22.396763][ T419] loop1: detected capacity change from 0 to 512 [ 22.415603][ T419] EXT4-fs warning (device loop1): read_mmp_block:107: Error -74 while reading MMP block 12 [pid 421] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 431] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 430] rt_sigprocmask(SIG_SETMASK, [], [pid 429] creat("./bus", 000 [pid 428] memfd_create("syzkaller", 0 [pid 427] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 426] <... mmap resumed>) = 0x7efd4eb6c000 [pid 425] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 424] rt_sigprocmask(SIG_BLOCK, ~[], [pid 423] <... mmap resumed>) = 0x7efd4eb4b000 [pid 421] <... futex resumed>) = 0 [pid 431] memfd_create("syzkaller", 0 [pid 430] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 429] <... creat resumed>) = 4 [pid 428] <... memfd_create resumed>) = 3 [pid 427] <... openat resumed>) = 5 [pid 426] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 424] <... rt_sigprocmask resumed>[], 8) = 0 [pid 423] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 421] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 432 attached [pid 431] <... memfd_create resumed>) = 3 [pid 430] memfd_create("syzkaller", 0 [pid 429] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 427] ioctl(5, LOOP_SET_FD, 3 [pid 426] <... mprotect resumed>) = 0 [pid 425] <... clone3 resumed> => {parent_tid=[24]}, 88) = 24 [pid 424] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 423] <... mprotect resumed>) = 0 [pid 432] set_robust_list(0x7efd4eb6b9a0, 24 [pid 431] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 430] <... memfd_create resumed>) = 3 [pid 429] <... futex resumed>) = 1 [pid 428] <... mmap resumed>) = 0x7efd4674b000 [pid 422] <... futex resumed>) = 0 [pid 432] <... set_robust_list resumed>) = 0 [pid 431] <... mmap resumed>) = 0x7efd4674b000 [pid 432] rt_sigprocmask(SIG_SETMASK, [], [pid 431] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 432] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 431] <... write resumed>) = 262144 [pid 432] creat("./bus", 000 [pid 431] munmap(0x7efd4674b000, 262144 [pid 432] <... creat resumed>) = 4 [pid 431] <... munmap resumed>) = 0 [pid 432] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 431] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 432] <... futex resumed>) = 1 [pid 431] <... openat resumed>) = 4 [pid 421] <... futex resumed>) = 0 [pid 432] mount("/dev/loop5", "./bus", NULL, MS_BIND, NULL [pid 431] ioctl(4, LOOP_SET_FD, 3 [pid 421] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 432] <... mount resumed>) = 0 [pid 430] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 429] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 428] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 265740 [pid 426] rt_sigprocmask(SIG_BLOCK, ~[], [pid 425] rt_sigprocmask(SIG_SETMASK, [], [pid 423] rt_sigprocmask(SIG_BLOCK, ~[], [pid 422] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] <... futex resumed>) = 0 [pid 432] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 430] <... mmap resumed>) = 0x7efd4674b000 [pid 429] <... mount resumed>) = 0 [pid 426] <... rt_sigprocmask resumed>[], 8) = 0 [pid 425] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 424] <... clone3 resumed> => {parent_tid=[19]}, 88) = 19 [pid 423] <... rt_sigprocmask resumed>[], 8) = 0 [pid 422] <... futex resumed>) = 0 [pid 421] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 432] <... futex resumed>) = 0 [pid 429] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 432] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 429] <... futex resumed>) = 0 [pid 426] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 425] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] rt_sigprocmask(SIG_SETMASK, [], [pid 423] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 422] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 421] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 432] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 429] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 421] <... futex resumed>) = 0 ./strace-static-x86_64: Process 435 attached ./strace-static-x86_64: Process 434 attached ./strace-static-x86_64: Process 433 attached [pid 432] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 430] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 428] <... write resumed>) = 265740 [pid 427] <... ioctl resumed>) = 0 [pid 425] <... futex resumed>) = 0 [pid 424] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 422] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 421] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 435] set_robust_list(0x7efd4eb6b9a0, 24 [pid 434] set_robust_list(0x7efd4eb6b9a0, 24 [pid 433] set_robust_list(0x7efd4eb8c9a0, 24 [pid 432] <... open resumed>) = 5 [pid 434] <... set_robust_list resumed>) = 0 [pid 432] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 435] <... set_robust_list resumed>) = 0 [pid 434] rt_sigprocmask(SIG_SETMASK, [], [pid 433] <... set_robust_list resumed>) = 0 [pid 432] <... futex resumed>) = 1 [pid 430] <... write resumed>) = 262144 [pid 428] munmap(0x7efd4674b000, 265740 [pid 427] close(3 [pid 426] <... clone3 resumed> => {parent_tid=[21]}, 88) = 21 [pid 425] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] <... clone3 resumed> => {parent_tid=[16]}, 88) = 16 [pid 422] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] <... futex resumed>) = 0 [pid 435] rt_sigprocmask(SIG_SETMASK, [], [pid 434] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 433] rt_sigprocmask(SIG_SETMASK, [], [pid 432] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 430] munmap(0x7efd4674b000, 262144 [pid 421] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 436 attached [pid 435] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 434] creat("./bus", 000 [pid 433] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 432] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 430] <... munmap resumed>) = 0 [pid 429] <... futex resumed>) = 0 [pid 428] <... munmap resumed>) = 0 [pid 427] <... close resumed>) = 0 [pid 426] rt_sigprocmask(SIG_SETMASK, [], [pid 425] <... futex resumed>) = 0 [pid 424] <... futex resumed>) = 0 [pid 423] rt_sigprocmask(SIG_SETMASK, [], [pid 422] <... futex resumed>) = 1 [pid 421] <... futex resumed>) = 0 [pid 436] set_robust_list(0x7efd4eb8c9a0, 24 [pid 435] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 434] <... creat resumed>) = 4 [pid 433] memfd_create("syzkaller", 0 [pid 432] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 5, 0 [pid 430] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 429] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 428] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 427] mkdir("./file0", 0777 [pid 426] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 425] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 424] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 423] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 422] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 421] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 436] <... set_robust_list resumed>) = 0 [pid 434] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] <... memfd_create resumed>) = 3 [pid 432] <... mmap resumed>) = 0x20000000 [pid 430] <... openat resumed>) = 5 [pid 429] <... open resumed>) = 3 [pid 428] <... openat resumed>) = 6 [pid 427] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 426] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 425] <... mmap resumed>) = 0x7efd4eb4b000 [pid 424] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 423] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 436] rt_sigprocmask(SIG_SETMASK, [], [pid 435] <... futex resumed>) = 0 [pid 434] <... futex resumed>) = 0 [pid 433] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 432] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 430] ioctl(5, LOOP_SET_FD, 3 [pid 429] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] ioctl(6, LOOP_SET_FD, 3 [pid 427] mount("/dev/loop4", "./file0", "ext4", MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "nodiscard,barrier,nouid32,grpquota,,errors=continue" [pid 426] <... futex resumed>) = 0 [pid 425] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 424] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] <... futex resumed>) = 1 [pid 436] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 435] creat("./bus", 000 [pid 434] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 433] <... mmap resumed>) = 0x7efd4674b000 [pid 432] <... futex resumed>) = 1 [pid 431] <... ioctl resumed>) = 0 [pid 421] <... futex resumed>) = 0 [pid 436] memfd_create("syzkaller", 0 [pid 434] <... mount resumed>) = 0 [pid 432] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 431] close(3 [pid 421] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 436] <... memfd_create resumed>) = 3 [pid 434] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 432] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 431] <... close resumed>) = 0 [pid 421] <... futex resumed>) = 0 [pid 436] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 434] <... futex resumed>) = 0 [pid 432] memfd_create("syzkaller", 0 [pid 431] mkdir("./file0", 0777 [pid 436] <... mmap resumed>) = 0x7efd4676c000 [pid 434] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 432] <... memfd_create resumed>) = 7 [pid 431] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 436] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 432] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 431] mount("/dev/loop0", "./file0", "ext4", MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "nodiscard,barrier,nouid32,grpquota,,errors=continue" [pid 429] <... futex resumed>) = 1 [pid 428] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 436] <... write resumed>) = 262144 [pid 435] <... creat resumed>) = 3 [pid 434] <... futex resumed>) = 0 [pid 433] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 432] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 429] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 428] ioctl(6, LOOP_CLR_FD [pid 426] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 425] <... mprotect resumed>) = 0 [pid 424] <... futex resumed>) = 1 [pid 423] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 422] <... futex resumed>) = 0 [pid 436] munmap(0x7efd4676c000, 262144 [pid 435] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 434] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 432] close(7 [pid 430] <... ioctl resumed>) = 0 [pid 436] <... munmap resumed>) = 0 [pid 433] <... write resumed>) = 262144 [pid 432] <... close resumed>) = 0 [pid 428] <... ioctl resumed>) = 0 [pid 426] <... futex resumed>) = 0 [pid 436] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 435] <... futex resumed>) = 0 [pid 433] munmap(0x7efd4674b000, 262144 [pid 432] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 430] close(3 [pid 425] rt_sigprocmask(SIG_BLOCK, ~[], [pid 424] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 423] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 422] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 436] <... openat resumed>) = 4 [pid 435] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 432] <... futex resumed>) = 0 [pid 429] <... futex resumed>) = 0 [pid 426] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 425] <... rt_sigprocmask resumed>[], 8) = 0 [pid 424] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 423] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 422] <... futex resumed>) = 1 [pid 436] ioctl(4, LOOP_SET_FD, 3 [pid 435] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 432] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 429] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 3, 0 [pid 426] <... mmap resumed>) = 0x7efd4678b000 [pid 425] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 424] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] <... futex resumed>) = 0 [pid 422] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 436] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 429] <... mmap resumed>) = 0x20000000 [pid 423] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 436] ioctl(4, LOOP_CLR_FD [pid 435] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 434] <... futex resumed>) = 0 [pid 429] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 428] ioctl(6, LOOP_SET_FD, 3 [pid 426] mprotect(0x7efd4678c000, 131072, PROT_READ|PROT_WRITE [pid 424] <... futex resumed>) = 1 [pid 433] <... munmap resumed>) = 0 [pid 436] <... ioctl resumed>) = 0 [pid 435] <... mount resumed>) = 0 [pid 434] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 429] <... futex resumed>) = 1 [pid 428] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 426] <... mprotect resumed>) = 0 [pid 425] <... clone3 resumed> => {parent_tid=[25]}, 88) = 25 [pid 424] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 422] <... futex resumed>) = 0 [pid 435] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 434] <... open resumed>) = 6 [pid 433] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 430] <... close resumed>) = 0 [pid 429] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 428] close(6 [pid 426] rt_sigprocmask(SIG_BLOCK, ~[], [pid 425] rt_sigprocmask(SIG_SETMASK, [], [pid 422] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 435] <... futex resumed>) = 1 [pid 434] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] <... openat resumed>) = 4 [pid 429] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 428] <... close resumed>) = 0 [pid 426] <... rt_sigprocmask resumed>[], 8) = 0 [pid 425] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 423] <... futex resumed>) = 0 [pid 422] <... futex resumed>) = 0 ./strace-static-x86_64: Process 439 attached [pid 435] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 434] <... futex resumed>) = 1 [pid 433] ioctl(4, LOOP_SET_FD, 3 [pid 430] mkdir("./file0", 0777 [pid 429] memfd_create("syzkaller", 0 [pid 428] close(3 [pid 426] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd467ab990, parent_tid=0x7efd467ab990, exit_signal=0, stack=0x7efd4678b000, stack_size=0x20240, tls=0x7efd467ab6c0} [pid 425] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] <... futex resumed>) = 0 [pid 423] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 436] ioctl(4, LOOP_SET_FD, 3 [pid 434] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 436] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 436] close(4) = 0 [pid 436] close(3) = 0 [pid 436] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 22.480693][ T427] loop4: detected capacity change from 0 to 512 [ 22.486700][ T431] loop0: detected capacity change from 0 to 512 [ 22.505371][ T430] loop1: detected capacity change from 0 to 512 [pid 436] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 435] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 429] <... memfd_create resumed>) = 6 [pid 428] <... close resumed>) = 0 [pid 425] <... futex resumed>) = 0 [pid 424] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] <... futex resumed>) = 0 [pid 435] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 434] <... futex resumed>) = 0 [pid 433] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 429] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 428] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] <... clone3 resumed> => {parent_tid=[22]}, 88) = 22 [pid 425] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 424] <... futex resumed>) = 1 [pid 423] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 439] set_robust_list(0x7efd4eb6b9a0, 24 [pid 435] <... open resumed>) = 5 [pid 434] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 433] ioctl(4, LOOP_CLR_FD [pid 430] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 429] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 428] <... futex resumed>) = 0 [pid 426] rt_sigprocmask(SIG_SETMASK, [], [pid 424] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 439] <... set_robust_list resumed>) = 0 [pid 435] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 434] <... mmap resumed>) = 0x20000000 [pid 433] <... ioctl resumed>) = 0 [pid 430] mount("/dev/loop1", 0x20000000, 0x200005c0, MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"... [pid 429] close(6 [pid 428] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 426] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 421] close(3./strace-static-x86_64: Process 442 attached [pid 439] rt_sigprocmask(SIG_SETMASK, [], [pid 435] <... futex resumed>) = 1 [pid 434] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 430] <... mount resumed>) = -1 ENOENT (No such file or directory) [pid 429] <... close resumed>) = 0 [pid 426] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] <... futex resumed>) = 0 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 442] set_robust_list(0x7efd467ab9a0, 24 [pid 439] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 435] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 434] <... futex resumed>) = 1 [pid 430] ioctl(5, LOOP_CLR_FD [pid 429] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] <... futex resumed>) = 0 [pid 424] <... futex resumed>) = 0 [pid 423] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] close(4 [pid 442] <... set_robust_list resumed>) = 0 [pid 439] creat("./bus", 000 [pid 435] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 434] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 433] ioctl(4, LOOP_SET_FD, 3 [pid 430] <... ioctl resumed>) = 0 [pid 429] <... futex resumed>) = 0 [pid 426] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 424] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] <... futex resumed>) = 0 [pid 421] <... close resumed>) = 0 [pid 442] rt_sigprocmask(SIG_SETMASK, [], [pid 439] <... creat resumed>) = 5 [pid 435] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 5, 0 [pid 434] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 433] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 430] close(5 [pid 429] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 424] <... futex resumed>) = 0 [pid 423] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 421] close(5 [pid 442] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 439] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 435] <... mmap resumed>) = 0x20000000 [pid 434] memfd_create("syzkaller", 0 [pid 433] close(4 [pid 430] <... close resumed>) = 0 [pid 421] <... close resumed>) = 0 [pid 442] creat("./bus", 000 [pid 439] <... futex resumed>) = 1 [pid 435] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 434] <... memfd_create resumed>) = 3 [pid 433] <... close resumed>) = 0 [pid 430] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 425] <... futex resumed>) = 0 [pid 421] close(6 [pid 442] <... creat resumed>) = 3 [pid 439] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 435] <... futex resumed>) = 1 [pid 434] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 433] close(3 [pid 430] <... futex resumed>) = 0 [pid 425] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 423] <... futex resumed>) = 0 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 442] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 439] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 435] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 434] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 421] close(7 [pid 442] <... futex resumed>) = 1 [pid 439] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 435] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 434] close(3 [pid 433] <... close resumed>) = 0 [pid 430] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 426] <... futex resumed>) = 0 [pid 425] <... futex resumed>) = 0 [pid 423] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 442] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 439] <... mount resumed>) = 0 [pid 435] memfd_create("syzkaller", 0 [pid 434] <... close resumed>) = 0 [pid 433] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 425] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 423] <... futex resumed>) = 0 [pid 421] close(8 [pid 434] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 434] <... futex resumed>) = 0 [pid 421] close(9 [pid 434] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 439] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 436] <... futex resumed>) = 0 [pid 435] <... memfd_create resumed>) = 6 [pid 433] <... futex resumed>) = 0 [pid 426] <... futex resumed>) = 1 [pid 425] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 421] close(10 [pid 439] <... futex resumed>) = 0 [pid 436] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 435] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 433] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 426] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 425] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] close(3 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 439] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 436] <... mount resumed>) = 0 [pid 435] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 433] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 425] <... futex resumed>) = 0 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 421] close(11 [pid 436] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 435] close(6 [pid 433] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 425] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 424] close(4 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 436] <... futex resumed>) = 1 [pid 435] <... close resumed>) = 0 [pid 433] <... open resumed>) = 3 [pid 426] <... futex resumed>) = 0 [pid 424] <... close resumed>) = 0 [pid 421] close(12 [pid 436] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 435] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] close(5 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 436] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 435] <... futex resumed>) = 0 [pid 433] <... futex resumed>) = 1 [pid 426] <... futex resumed>) = 0 [pid 425] <... futex resumed>) = 0 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 421] close(13 [pid 436] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 435] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 433] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 426] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 425] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] close(6 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 436] <... open resumed>) = 4 [pid 433] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 425] <... futex resumed>) = 0 [pid 424] <... close resumed>) = 0 [pid 421] close(14 [pid 436] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 3, 0 [pid 425] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 424] close(7 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 436] <... futex resumed>) = 1 [pid 433] <... mmap resumed>) = 0x20000000 [pid 426] <... futex resumed>) = 0 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 421] close(15 [pid 436] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 433] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] close(8 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 436] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 433] <... futex resumed>) = 1 [pid 426] <... futex resumed>) = 0 [pid 425] <... futex resumed>) = 0 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 421] close(16 [pid 436] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 4, 0 [pid 433] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 426] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 425] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] close(9 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 436] <... mmap resumed>) = 0x20000000 [pid 433] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 425] <... futex resumed>) = 0 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 421] close(17 [pid 436] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 433] memfd_create("syzkaller", 0 [pid 424] close(10 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 436] <... futex resumed>) = 1 [pid 433] <... memfd_create resumed>) = 4 [pid 426] <... futex resumed>) = 0 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 421] close(18 [pid 436] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 433] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 426] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] close(11 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 436] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 433] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 426] <... futex resumed>) = 0 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 421] close(19 [pid 436] memfd_create("syzkaller", 0 [pid 433] close(4 [pid 424] close(12 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 436] <... memfd_create resumed>) = 5 [pid 433] <... close resumed>) = 0 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 421] close(20 [pid 436] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 433] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] close(13 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 436] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 433] <... futex resumed>) = 0 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 424] close(14) = -1 EBADF (Bad file descriptor) [pid 421] close(21 [pid 436] close(5 [pid 433] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 424] close(15 [pid 436] <... close resumed>) = 0 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 436] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 421] close(22 [pid 436] <... futex resumed>) = 0 [pid 424] close(16 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 436] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 426] close(3 [pid 425] close(3 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 421] close(23 [pid 426] <... close resumed>) = 0 [pid 425] <... close resumed>) = 0 [pid 424] close(17 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [ 22.525308][ T427] EXT4-fs (loop4): revision level too high, forcing read-only mode [ 22.535730][ T431] EXT4-fs (loop0): mounted filesystem without journal. Quota mode: writeback. [ 22.547921][ T431] ext4 filesystem being mounted at /root/file0 supports timestamps until 2038 (0x7fffffff) [ 22.560803][ T427] EXT4-fs error (device loop4): ext4_init_orphan_info:586: comm syz-executor326: inode #0: comm syz-executor326: iget: illegal inode # [pid 426] close(4 [pid 425] close(4 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 421] close(24 [pid 431] <... mount resumed>) = 0 [pid 426] <... close resumed>) = 0 [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 424] close(18 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 431] openat(AT_FDCWD, 0x20000000, O_RDONLY|O_DIRECTORY [pid 426] close(5 [pid 425] close(5 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 421] close(25 [pid 431] <... openat resumed>) = 6 [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] <... close resumed>) = 0 [pid 424] close(19 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 431] chdir(0x20000000 [pid 426] close(6 [pid 425] close(6 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 421] close(26 [pid 431] <... chdir resumed>) = 0 [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 424] close(20 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 431] ioctl(4, LOOP_CLR_FD [pid 426] close(7 [pid 425] close(7 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 421] close(27 [pid 431] <... ioctl resumed>) = 0 [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 424] close(21 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 431] close(4 [pid 426] close(8 [pid 425] close(8 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 421] close(28 [pid 431] <... close resumed>) = 0 [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 424] close(22 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 431] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 426] close(9 [pid 425] close(9 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 421] close(29 [pid 431] <... futex resumed>) = 0 [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 424] close(23 [pid 421] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 431] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 426] close(10 [pid 425] close(10 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 421] exit_group(0 [pid 432] <... futex resumed>) = ? [pid 428] <... futex resumed>) = ? [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 424] close(24 [pid 421] <... exit_group resumed>) = ? [pid 432] +++ exited with 0 +++ [pid 428] +++ exited with 0 +++ [pid 426] close(11 [pid 425] close(11 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 421] +++ exited with 0 +++ [pid 301] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=18, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 301] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 301] ioctl(3, LOOP_CLR_FD) = 0 [pid 301] close(3) = 0 [pid 426] close(12 [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 424] close(25 [pid 423] close(3 [pid 301] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] close(12 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 423] <... close resumed>) = 0 [pid 426] close(13 [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 424] close(26 [pid 423] close(4 [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] close(13 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 423] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 426] close(14 [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 424] close(27 [pid 423] close(5 [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] close(14 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 423] <... close resumed>) = 0 [pid 426] close(15 [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 424] close(28 [pid 423] close(6 [pid 301] <... clone resumed>, child_tidptr=0x555557294750) = 21 [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] close(15 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 423] <... close resumed>) = 0 [pid 426] close(16 [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 424] close(29 [pid 423] close(7 [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] close(16 [pid 424] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 423] <... close resumed>) = -1 EBADF (Bad file descriptor) ./strace-static-x86_64: Process 444 attached [pid 426] close(17 [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 424] exit_group(0 [pid 423] close(8 [pid 434] <... futex resumed>) = ? [pid 430] <... futex resumed>) = ? [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] close(17 [pid 424] <... exit_group resumed>) = ? [pid 423] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 444] set_robust_list(0x555557294760, 24 [pid 434] +++ exited with 0 +++ [pid 430] +++ exited with 0 +++ [pid 426] close(18 [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 424] +++ exited with 0 +++ [pid 423] close(9 [pid 444] <... set_robust_list resumed>) = 0 [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] close(18 [pid 423] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- [pid 426] close(19 [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 423] close(10 [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] close(19 [pid 423] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 426] close(20 [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 423] close(11 [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] close(20 [pid 423] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 426] close(21 [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 423] close(12 [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] close(21 [pid 423] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 444] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 426] close(22 [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 423] close(13 [pid 444] <... prctl resumed>) = 0 [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] close(22 [pid 423] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 444] setpgid(0, 0 [pid 426] close(23 [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 423] close(14 [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] close(23 [pid 423] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 426] close(24 [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 423] close(15 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 444] <... setpgid resumed>) = 0 [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] close(24 [pid 423] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] <... openat resumed>) = 3 [pid 426] close(25 [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 423] close(16 [pid 306] ioctl(3, LOOP_CLR_FD [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] close(25 [pid 423] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 426] close(26 [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 423] close(17 [pid 306] close(3 [pid 444] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] close(26 [pid 423] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] <... close resumed>) = 0 [pid 426] close(27 [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 423] close(18 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 444] <... openat resumed>) = 3 [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] close(27 [pid 423] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 444] write(3, "1000", 4 [pid 426] close(28 [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 423] close(19 [pid 444] <... write resumed>) = 4 [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] close(28 [pid 423] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] <... clone resumed>, child_tidptr=0x555557294750) = 20 [pid 444] close(3 [pid 426] close(29 [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 423] close(20./strace-static-x86_64: Process 445 attached [pid 444] <... close resumed>) = 0 [pid 426] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 425] close(29 [pid 423] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 426] exit_group(0 [pid 425] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 423] close(21 [pid 444] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 445] set_robust_list(0x555557294760, 24 [pid 444] <... futex resumed>) = 0 [pid 442] <... futex resumed>) = ? [pid 436] <... futex resumed>) = ? [pid 426] <... exit_group resumed>) = ? [pid 425] exit_group(0 [pid 423] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 442] +++ exited with 0 +++ [pid 423] close(22) = -1 EBADF (Bad file descriptor) [pid 423] close(23) = -1 EBADF (Bad file descriptor) [pid 423] close(24) = -1 EBADF (Bad file descriptor) [pid 423] close(25) = -1 EBADF (Bad file descriptor) [pid 423] close(26) = -1 EBADF (Bad file descriptor) [pid 423] close(27) = -1 EBADF (Bad file descriptor) [pid 423] close(28) = -1 EBADF (Bad file descriptor) [pid 423] close(29) = -1 EBADF (Bad file descriptor) [pid 445] <... set_robust_list resumed>) = 0 [pid 444] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 439] <... futex resumed>) = ? [pid 436] +++ exited with 0 +++ [pid 433] <... futex resumed>) = ? [pid 426] +++ exited with 0 +++ [pid 425] <... exit_group resumed>) = ? [pid 423] exit_group(0 [pid 439] +++ exited with 0 +++ [pid 435] <... futex resumed>) = ? [pid 433] +++ exited with 0 +++ [pid 431] <... futex resumed>) = ? [pid 423] <... exit_group resumed>) = ? [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 444] <... rt_sigaction resumed>NULL, 8) = 0 [pid 435] +++ exited with 0 +++ [pid 431] +++ exited with 0 +++ [pid 425] +++ exited with 0 +++ [pid 423] +++ exited with 0 +++ [pid 445] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 444] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 305] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=23, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 444] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 305] <... openat resumed>) = 3 [pid 444] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 444] <... mmap resumed>) = 0x7efd4eb6c000 [pid 305] close(3 [pid 445] <... prctl resumed>) = 0 [pid 444] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 305] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 445] setpgid(0, 0 [pid 444] <... mprotect resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x555557294750) = 23 [pid 303] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 302] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 303] <... openat resumed>) = 3 [pid 302] <... openat resumed>) = 3 [pid 303] ioctl(3, LOOP_CLR_FD [pid 444] rt_sigprocmask(SIG_BLOCK, ~[], [pid 302] ioctl(3, LOOP_CLR_FD [pid 303] <... ioctl resumed>) = 0 [pid 444] <... rt_sigprocmask resumed>[], 8) = 0 [pid 303] close(3 [pid 302] <... ioctl resumed>) = 0 [pid 444] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 302] close(3 [pid 303] <... close resumed>) = 0 [pid 302] <... close resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 448 attached ./strace-static-x86_64: Process 447 attached ./strace-static-x86_64: Process 446 attached [pid 445] <... setpgid resumed>) = 0 [pid 444] <... clone3 resumed> => {parent_tid=[22]}, 88) = 22 [pid 303] <... clone resumed>, child_tidptr=0x555557294750) = 17 [pid 302] <... clone resumed>, child_tidptr=0x555557294750) = 26 [pid 444] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 444] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 444] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 427] <... mount resumed>) = -1 EUCLEAN (Structure needs cleaning) [pid 444] <... futex resumed>) = 0 [pid 427] ioctl(5, LOOP_CLR_FD [pid 444] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 427] <... ioctl resumed>) = 0 [pid 427] close(5 [pid 444] <... mmap resumed>) = 0x7efd4eb4b000 [pid 444] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 427] <... close resumed>) = 0 [pid 427] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 444] <... mprotect resumed>) = 0 [pid 427] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 444] rt_sigprocmask(SIG_BLOCK, ~[], [pid 422] close(3) = 0 [pid 444] <... rt_sigprocmask resumed>[], 8) = 0 [pid 445] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 444] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 422] close(4) = 0 [pid 444] <... clone3 resumed> => {parent_tid=[23]}, 88) = 23 [pid 422] close(5 [pid 445] <... openat resumed>) = 3 [pid 444] rt_sigprocmask(SIG_SETMASK, [], [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] write(3, "1000", 4 [pid 444] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 422] close(6 [pid 444] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] <... write resumed>) = 4 [pid 444] <... futex resumed>) = 0 [pid 422] close(7 [pid 448] set_robust_list(0x555557294760, 24 [pid 447] set_robust_list(0x7efd4eb8c9a0, 24 [pid 446] set_robust_list(0x555557294760, 24 [pid 445] close(3 [pid 444] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] <... close resumed>) = 0 [pid 422] close(8) = -1 EBADF (Bad file descriptor) [pid 445] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 422] close(9 [pid 445] <... futex resumed>) = 0 [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 422] close(10 [pid 445] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... set_robust_list resumed>) = 0 [pid 447] <... set_robust_list resumed>) = 0 [pid 446] <... set_robust_list resumed>) = 0 [pid 445] <... rt_sigaction resumed>NULL, 8) = 0 [pid 422] close(11 [pid 445] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 422] close(12 [pid 445] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 422] close(13 [pid 445] <... mmap resumed>) = 0x7efd4eb6c000 [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 422] close(14 [pid 445] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) ./strace-static-x86_64: Process 449 attached [pid 422] close(15./strace-static-x86_64: Process 450 attached [pid 445] <... mprotect resumed>) = 0 [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 450] set_robust_list(0x7efd4eb6b9a0, 24 [pid 422] close(16 [pid 450] <... set_robust_list resumed>) = 0 [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 449] set_robust_list(0x555557294760, 24 [pid 445] rt_sigprocmask(SIG_BLOCK, ~[], [pid 422] close(17 [pid 448] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] <... rt_sigprocmask resumed>[], 8) = 0 [pid 422] close(18 [pid 448] <... prctl resumed>) = 0 [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 422] close(19 [pid 448] setpgid(0, 0 [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 422] close(20) = -1 EBADF (Bad file descriptor) [pid 422] close(21 [pid 448] <... setpgid resumed>) = 0 [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 422] close(22 [pid 445] <... clone3 resumed> => {parent_tid=[21]}, 88) = 21 [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] rt_sigprocmask(SIG_SETMASK, [], [pid 448] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 422] close(23 [pid 450] rt_sigprocmask(SIG_SETMASK, [], [pid 445] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 450] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 448] <... openat resumed>) = 3 [pid 422] close(24 [pid 445] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] write(3, "1000", 4 [pid 447] rt_sigprocmask(SIG_SETMASK, [], [pid 422] close(25 [pid 445] <... futex resumed>) = 0 [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... write resumed>) = 4 [pid 447] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 422] close(26 [pid 445] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 451 attached [pid 450] creat("./bus", 000 [pid 449] <... set_robust_list resumed>) = 0 [pid 448] close(3 [pid 446] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 447] memfd_create("syzkaller", 0 [pid 445] <... futex resumed>) = 0 [pid 451] set_robust_list(0x7efd4eb8c9a0, 24 [pid 450] <... creat resumed>) = 3 [pid 449] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 448] <... close resumed>) = 0 [pid 446] <... prctl resumed>) = 0 [pid 422] close(27 [pid 450] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] <... prctl resumed>) = 0 [pid 448] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 447] <... memfd_create resumed>) = 4 [pid 445] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 450] <... futex resumed>) = 1 [pid 449] setpgid(0, 0 [pid 448] <... futex resumed>) = 0 [pid 447] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 446] setpgid(0, 0 [pid 445] <... mmap resumed>) = 0x7efd4eb4b000 [pid 444] <... futex resumed>) = 0 [pid 422] close(28 [pid 450] mount("/dev/loop5", "./bus", NULL, MS_BIND, NULL [pid 449] <... setpgid resumed>) = 0 [pid 444] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 451] <... set_robust_list resumed>) = 0 [pid 450] <... mount resumed>) = 0 [pid 449] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 448] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 447] <... mmap resumed>) = 0x7efd4674b000 [pid 446] <... setpgid resumed>) = 0 [pid 444] <... futex resumed>) = 0 [pid 422] close(29 [pid 450] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] <... openat resumed>) = 3 [pid 448] <... rt_sigaction resumed>NULL, 8) = 0 [pid 445] <... mprotect resumed>) = 0 [pid 444] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 422] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 450] <... futex resumed>) = 0 [pid 449] write(3, "1000", 4 [pid 444] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 450] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 449] <... write resumed>) = 4 [pid 448] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 445] rt_sigprocmask(SIG_BLOCK, ~[], [pid 444] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 422] exit_group(0 [pid 450] <... open resumed>) = 5 [pid 449] close(3 [pid 448] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 445] <... rt_sigprocmask resumed>[], 8) = 0 [pid 444] <... futex resumed>) = 0 [pid 429] <... futex resumed>) = ? [pid 427] <... futex resumed>) = ? [pid 422] <... exit_group resumed>) = ? [pid 451] rt_sigprocmask(SIG_SETMASK, [], [pid 450] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] <... close resumed>) = 0 [pid 448] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 447] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 265740 [pid 446] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 445] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 444] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 429] +++ exited with 0 +++ [pid 427] +++ exited with 0 +++ [pid 422] +++ exited with 0 +++ [pid 451] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 450] <... futex resumed>) = 0 [pid 449] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] <... mmap resumed>) = 0x7efd4eb6c000 [pid 447] <... write resumed>) = 265740 [pid 446] <... openat resumed>) = 3 [pid 444] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=14, si_uid=0, si_status=0, si_utime=0, si_stime=4} --- [ 22.622022][ T427] EXT4-fs (loop4): get orphan inode failed [ 22.649973][ T427] EXT4-fs (loop4): mount failed [pid 451] memfd_create("syzkaller", 0 [pid 450] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 449] <... futex resumed>) = 0 [pid 448] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 446] write(3, "1000", 4 [pid 445] <... clone3 resumed> => {parent_tid=[22]}, 88) = 22 [pid 444] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 449] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 448] <... mprotect resumed>) = 0 [pid 446] <... write resumed>) = 4 [pid 445] rt_sigprocmask(SIG_SETMASK, [], [pid 451] <... memfd_create resumed>) = 3 [pid 444] <... futex resumed>) = 0 [pid 450] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 5, 0 [pid 449] <... rt_sigaction resumed>NULL, 8) = 0 [pid 444] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 451] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 450] <... mmap resumed>) = 0x20000000 [pid 449] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 448] rt_sigprocmask(SIG_BLOCK, ~[], [pid 446] close(3 [pid 445] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 450] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 448] <... rt_sigprocmask resumed>[], 8) = 0 [pid 446] <... close resumed>) = 0 [pid 445] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 451] <... mmap resumed>) = 0x7efd4674b000 [pid 450] <... futex resumed>) = 1 [pid 449] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 448] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 445] <... futex resumed>) = 0 [pid 444] <... futex resumed>) = 0 [pid 446] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 447] munmap(0x7efd4674b000, 265740 [pid 450] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 449] <... mmap resumed>) = 0x7efd4eb6c000 [pid 445] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 444] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 452 attached [pid 450] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 449] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 446] <... futex resumed>) = 0 [pid 444] <... futex resumed>) = 0 [pid 452] set_robust_list(0x7efd4eb6b9a0, 24 [pid 450] memfd_create("syzkaller", 0 [pid 449] <... mprotect resumed>) = 0 [pid 448] <... clone3 resumed> => {parent_tid=[18]}, 88) = 18 [pid 446] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, ./strace-static-x86_64: Process 453 attached [pid 452] <... set_robust_list resumed>) = 0 [pid 450] <... memfd_create resumed>) = 6 [pid 449] rt_sigprocmask(SIG_BLOCK, ~[], [pid 448] rt_sigprocmask(SIG_SETMASK, [], [pid 446] <... rt_sigaction resumed>NULL, 8) = 0 [pid 452] rt_sigprocmask(SIG_SETMASK, [], [pid 451] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 450] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 449] <... rt_sigprocmask resumed>[], 8) = 0 [pid 452] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 449] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 448] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 446] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 304] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 452] creat("./bus", 000) = 4 [pid 449] <... clone3 resumed> => {parent_tid=[27]}, 88) = 27 [pid 304] <... openat resumed>) = 3 [pid 452] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] rt_sigprocmask(SIG_SETMASK, [], [pid 448] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 446] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 452] <... futex resumed>) = 1 [pid 449] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 448] <... futex resumed>) = 0 [pid 446] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 445] <... futex resumed>) = 0 [pid 304] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 454 attached [pid 452] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 451] <... write resumed>) = 262144 [pid 449] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 446] <... mmap resumed>) = 0x7efd4eb6c000 [pid 445] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 454] set_robust_list(0x7efd4eb8c9a0, 24 [pid 452] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 451] munmap(0x7efd4674b000, 262144 [pid 449] <... futex resumed>) = 0 [pid 448] <... futex resumed>) = 0 [pid 446] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 454] <... set_robust_list resumed>) = 0 [pid 452] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 449] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 446] <... mprotect resumed>) = 0 [pid 445] <... futex resumed>) = 0 [pid 304] close(3 [pid 454] rt_sigprocmask(SIG_SETMASK, [], [pid 452] <... mount resumed>) = 0 [pid 451] <... munmap resumed>) = 0 [pid 450] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 449] <... futex resumed>) = 0 [pid 448] <... mmap resumed>) = 0x7efd4eb4b000 [pid 446] rt_sigprocmask(SIG_BLOCK, ~[], [pid 445] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... close resumed>) = 0 [pid 454] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 453] set_robust_list(0x7efd4eb8c9a0, 24 [pid 452] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 451] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 450] close(6 [pid 449] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 448] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 447] <... munmap resumed>) = 0 [pid 446] <... rt_sigprocmask resumed>[], 8) = 0 [pid 445] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 454] memfd_create("syzkaller", 0 [pid 453] <... set_robust_list resumed>) = 0 [pid 452] <... futex resumed>) = 0 [pid 451] <... openat resumed>) = 5 [pid 450] <... close resumed>) = 0 [pid 449] <... mmap resumed>) = 0x7efd4eb4b000 [pid 448] <... mprotect resumed>) = 0 [pid 447] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 446] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 445] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] rt_sigprocmask(SIG_SETMASK, [], [pid 452] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 450] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 454] <... memfd_create resumed>) = 3 [pid 453] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 452] <... open resumed>) = 6 [pid 451] ioctl(5, LOOP_SET_FD, 3 [pid 450] <... futex resumed>) = 0 [pid 449] <... mprotect resumed>) = 0 [pid 448] rt_sigprocmask(SIG_BLOCK, ~[], [pid 447] <... openat resumed>) = 6 [pid 445] <... futex resumed>) = 0 ./strace-static-x86_64: Process 456 attached ./strace-static-x86_64: Process 455 attached [pid 454] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 453] memfd_create("syzkaller", 0 [pid 452] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 449] rt_sigprocmask(SIG_BLOCK, ~[], [pid 448] <... rt_sigprocmask resumed>[], 8) = 0 [pid 446] <... clone3 resumed> => {parent_tid=[24]}, 88) = 24 [pid 445] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] <... clone resumed>, child_tidptr=0x555557294750) = 17 [pid 453] <... memfd_create resumed>) = 3 [pid 452] <... futex resumed>) = 0 [pid 449] <... rt_sigprocmask resumed>[], 8) = 0 [pid 447] ioctl(6, LOOP_SET_FD, 4 [pid 453] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 452] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 449] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 447] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 453] <... mmap resumed>) = 0x7efd4674b000 [pid 447] ioctl(6, LOOP_CLR_FD [pid 453] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 449] <... clone3 resumed> => {parent_tid=[28]}, 88) = 28 [pid 447] <... ioctl resumed>) = 0 [pid 453] <... write resumed>) = 262144 [pid 449] rt_sigprocmask(SIG_SETMASK, [], [pid 453] munmap(0x7efd4674b000, 262144 [pid 449] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 453] <... munmap resumed>) = 0 [pid 449] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 449] <... futex resumed>) = 0 [pid 453] <... openat resumed>) = 4 [pid 449] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 453] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 453] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 457 attached [pid 457] set_robust_list(0x7efd4eb6b9a0, 24) = 0 [pid 447] ioctl(6, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 447] close(6 [pid 456] set_robust_list(0x7efd4eb8c9a0, 24 [pid 455] set_robust_list(0x555557294760, 24 [pid 454] <... mmap resumed>) = 0x7efd4674b000 [pid 451] <... ioctl resumed>) = 0 [pid 448] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 447] <... close resumed>) = 0 [pid 446] rt_sigprocmask(SIG_SETMASK, [], [pid 445] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 453] ioctl(4, LOOP_SET_FD, 3 [pid 447] close(4 [pid 453] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 447] <... close resumed>) = 0 [pid 446] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 445] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] close(4 [pid 447] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 458 attached [pid 456] <... set_robust_list resumed>) = 0 [pid 455] <... set_robust_list resumed>) = 0 [pid 454] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 453] <... close resumed>) = 0 [pid 452] <... futex resumed>) = 0 [pid 451] close(3 [pid 448] <... clone3 resumed> => {parent_tid=[19]}, 88) = 19 [pid 447] <... futex resumed>) = 0 [pid 446] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 445] <... futex resumed>) = 1 [pid 453] close(3 [pid 452] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 447] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 444] close(3 [pid 453] <... close resumed>) = 0 [pid 452] <... mmap resumed>) = 0x20000000 [pid 444] <... close resumed>) = 0 [pid 454] <... write resumed>) = 262144 [pid 453] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 452] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] rt_sigprocmask(SIG_SETMASK, [], [pid 444] close(4 [pid 446] <... futex resumed>) = 0 [pid 445] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 458] set_robust_list(0x7efd4eb6b9a0, 24 [pid 456] rt_sigprocmask(SIG_SETMASK, [], [pid 455] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 454] munmap(0x7efd4674b000, 262144 [pid 453] <... futex resumed>) = 0 [pid 452] <... futex resumed>) = 0 [pid 451] <... close resumed>) = 0 [pid 448] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 446] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 445] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 458] <... set_robust_list resumed>) = 0 [pid 457] rt_sigprocmask(SIG_SETMASK, [], [pid 456] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 455] <... prctl resumed>) = 0 [pid 454] <... munmap resumed>) = 0 [pid 453] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 452] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 451] mkdir(0x20000000, 0777 [pid 448] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 446] <... futex resumed>) = 0 [pid 445] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 444] close(5 [pid 455] setpgid(0, 0 [pid 452] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 448] <... futex resumed>) = 0 [pid 446] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 445] <... futex resumed>) = 0 [pid 444] <... close resumed>) = 0 [pid 456] memfd_create("syzkaller", 0 [pid 455] <... setpgid resumed>) = 0 [pid 454] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 444] close(6 [pid 458] rt_sigprocmask(SIG_SETMASK, [], [pid 457] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 458] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 457] creat("./bus", 000 [pid 444] close(7 [pid 446] <... mmap resumed>) = 0x7efd4eb4b000 [pid 448] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 458] creat("./bus", 000 [pid 457] <... creat resumed>) = 4 [pid 456] <... memfd_create resumed>) = 3 [pid 455] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 454] <... openat resumed>) = 5 [pid 446] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 458] <... creat resumed>) = 3 [pid 457] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 455] <... openat resumed>) = 3 [pid 444] close(8 [pid 458] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 457] <... futex resumed>) = 1 [pid 456] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 455] write(3, "1000", 4 [pid 454] ioctl(5, LOOP_SET_FD, 3 [pid 449] <... futex resumed>) = 0 [pid 446] <... mprotect resumed>) = 0 [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 458] <... futex resumed>) = 1 [pid 457] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 456] <... mmap resumed>) = 0x7efd4674b000 [pid 449] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] <... futex resumed>) = 0 [pid 446] rt_sigprocmask(SIG_BLOCK, ~[], [pid 444] close(9 [pid 455] <... write resumed>) = 4 [pid 454] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 458] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 457] <... mount resumed>) = 0 [pid 449] <... futex resumed>) = 0 [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 457] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 444] close(10 [pid 457] <... futex resumed>) = 0 [pid 449] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 457] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 449] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 444] close(11 [pid 457] <... open resumed>) = 6 [pid 449] <... futex resumed>) = 0 [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 457] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 444] close(12 [pid 457] <... futex resumed>) = 0 [pid 449] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 457] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 449] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 444] close(13 [pid 457] <... mmap resumed>) = 0x20000000 [pid 456] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 455] close(3 [pid 454] ioctl(5, LOOP_CLR_FD [pid 449] <... futex resumed>) = 0 [pid 448] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 446] <... rt_sigprocmask resumed>[], 8) = 0 [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 457] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 455] <... close resumed>) = 0 [pid 454] <... ioctl resumed>) = 0 [pid 453] <... futex resumed>) = 0 [pid 449] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 448] <... futex resumed>) = 1 [pid 446] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 444] close(14 [pid 457] <... futex resumed>) = 0 [pid 455] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 449] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 448] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 457] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 455] <... futex resumed>) = 0 [pid 453] <... mount resumed>) = 0 [pid 449] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 444] close(15 [pid 457] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 455] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 453] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] <... futex resumed>) = 0 [pid 446] <... clone3 resumed> => {parent_tid=[25]}, 88) = 25 [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 457] memfd_create("syzkaller", 0 [pid 455] <... rt_sigaction resumed>NULL, 8) = 0 [pid 453] <... futex resumed>) = 1 [pid 448] <... futex resumed>) = 0 [pid 446] rt_sigprocmask(SIG_SETMASK, [], [pid 444] close(16 [pid 457] <... memfd_create resumed>) = 7 [pid 455] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 453] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 448] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 446] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 457] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 455] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 454] ioctl(5, LOOP_SET_FD, 3 [pid 453] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 448] <... futex resumed>) = 0 [pid 446] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 444] close(17 [pid 457] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 456] <... write resumed>) = 262144 [pid 455] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 454] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 453] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 448] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 446] <... futex resumed>) = 0 [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) ./strace-static-x86_64: Process 459 attached [pid 457] close(7 [pid 456] munmap(0x7efd4674b000, 262144 [pid 455] <... mmap resumed>) = 0x7efd4eb6c000 [pid 454] close(5 [pid 453] <... open resumed>) = 4 [pid 452] memfd_create("syzkaller", 0 [pid 446] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 444] close(18 [pid 459] set_robust_list(0x7efd4eb6b9a0, 24 [pid 457] <... close resumed>) = 0 [pid 456] <... munmap resumed>) = 0 [pid 455] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 454] <... close resumed>) = 0 [pid 453] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 452] <... memfd_create resumed>) = 3 [pid 451] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 459] <... set_robust_list resumed>) = 0 [pid 457] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 455] <... mprotect resumed>) = 0 [pid 454] close(3 [pid 453] <... futex resumed>) = 1 [pid 452] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 448] <... futex resumed>) = 0 [pid 444] close(19 [pid 459] rt_sigprocmask(SIG_SETMASK, [], [pid 457] <... futex resumed>) = 0 [pid 456] <... openat resumed>) = 4 [pid 455] rt_sigprocmask(SIG_BLOCK, ~[], [pid 453] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 452] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 459] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 457] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 456] ioctl(4, LOOP_SET_FD, 3 [pid 453] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 444] close(20 [pid 459] creat("./bus", 000 [pid 456] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 453] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 4, 0 [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 459] <... creat resumed>) = 5 [pid 456] ioctl(4, LOOP_CLR_FD [pid 455] <... rt_sigprocmask resumed>[], 8) = 0 [pid 454] <... close resumed>) = 0 [pid 453] <... mmap resumed>) = 0x20000000 [pid 452] close(3 [pid 448] <... futex resumed>) = 0 [pid 444] close(21 [pid 459] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] <... ioctl resumed>) = 0 [pid 455] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 454] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 452] <... close resumed>) = 0 [pid 451] mount("/dev/loop1", 0x20000000, 0x200005c0, MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff\xff"... [pid 448] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 459] <... futex resumed>) = 1 [pid 454] <... futex resumed>) = 0 [pid 453] <... futex resumed>) = 0 [pid 452] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 446] <... futex resumed>) = 0 [pid 444] close(22 [pid 459] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 455] <... clone3 resumed> => {parent_tid=[18]}, 88) = 18 [pid 454] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 453] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 452] <... futex resumed>) = 0 [pid 451] <... mount resumed>) = -1 ENODEV (No such device) [pid 448] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 446] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 459] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 455] rt_sigprocmask(SIG_SETMASK, [], [pid 453] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 452] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 451] ioctl(5, LOOP_CLR_FD [pid 448] <... futex resumed>) = 0 [pid 446] <... futex resumed>) = 0 [pid 444] close(23 [pid 459] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 455] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 453] memfd_create("syzkaller", 0 [pid 451] <... ioctl resumed>) = 0 [pid 449] close(3 [pid 446] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 459] <... mount resumed>) = 0 [pid 455] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] <... memfd_create resumed>) = 5 [pid 451] close(5 [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 444] close(24./strace-static-x86_64: Process 460 attached [pid 459] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] ioctl(4, LOOP_SET_FD, 3 [pid 455] <... futex resumed>) = 0 [pid 453] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 449] close(4 [pid 451] <... close resumed>) = 0 [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 459] <... futex resumed>) = 1 [pid 456] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 455] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 453] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 451] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] <... close resumed>) = 0 [pid 446] <... futex resumed>) = 0 [pid 444] close(25 [pid 460] set_robust_list(0x7efd4eb8c9a0, 24 [pid 459] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 456] close(4 [pid 455] <... futex resumed>) = 0 [pid 453] close(5 [pid 460] <... set_robust_list resumed>) = 0 [pid 451] <... futex resumed>) = 0 [pid 449] close(5 [pid 446] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 460] rt_sigprocmask(SIG_SETMASK, [], [pid 459] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 456] <... close resumed>) = 0 [pid 455] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 453] <... close resumed>) = 0 [pid 451] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 446] <... futex resumed>) = 0 [pid 444] close(26 [pid 460] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 459] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 456] close(3 [pid 455] <... mmap resumed>) = 0x7efd4eb4b000 [pid 453] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] close(6 [pid 448] close(3 [pid 446] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 445] close(3 [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 460] memfd_create("syzkaller", 0 [pid 459] <... open resumed>) = 4 [pid 456] <... close resumed>) = 0 [pid 455] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 453] <... futex resumed>) = 0 [pid 449] <... close resumed>) = 0 [pid 448] <... close resumed>) = 0 [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 444] close(27 [pid 460] <... memfd_create resumed>) = 3 [pid 459] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 455] <... mprotect resumed>) = 0 [pid 453] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 449] close(7 [pid 448] close(4 [pid 445] close(4 [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 460] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 459] <... futex resumed>) = 1 [pid 456] <... futex resumed>) = 0 [pid 455] rt_sigprocmask(SIG_BLOCK, ~[], [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... close resumed>) = 0 [pid 446] <... futex resumed>) = 0 [pid 445] <... close resumed>) = 0 [pid 444] close(28 [pid 460] <... mmap resumed>) = 0x7efd4674b000 [pid 459] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 456] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 455] <... rt_sigprocmask resumed>[], 8) = 0 [pid 449] close(8 [pid 448] close(5 [pid 446] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 445] close(5 [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 460] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 456] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 455] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 446] <... futex resumed>) = 0 [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 444] close(29 [pid 460] <... write resumed>) = 262144 [pid 456] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 4, 0 [pid 449] close(9 [pid 448] close(6 [pid 446] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 445] close(6 [pid 444] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 460] munmap(0x7efd4674b000, 262144 [pid 456] <... mmap resumed>) = 0x20000000 [pid 455] <... clone3 resumed> => {parent_tid=[19]}, 88) = 19 [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] <... close resumed>) = 0 [pid 444] exit_group(0./strace-static-x86_64: Process 461 attached [pid 460] <... munmap resumed>) = 0 [pid 456] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [ 22.717923][ T451] loop1: detected capacity change from 0 to 512 [pid 455] rt_sigprocmask(SIG_SETMASK, [], [pid 449] close(10 [pid 448] close(7 [pid 445] close(7 [pid 460] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 456] <... futex resumed>) = 1 [pid 455] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 450] <... futex resumed>) = ? [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 447] <... futex resumed>) = ? [pid 446] <... futex resumed>) = 0 [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 444] <... exit_group resumed>) = ? [pid 461] set_robust_list(0x7efd4eb6b9a0, 24 [pid 460] <... openat resumed>) = 4 [pid 456] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 455] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 450] +++ exited with 0 +++ [pid 449] close(11 [pid 448] close(8 [pid 447] +++ exited with 0 +++ [pid 446] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 445] close(8 [pid 460] ioctl(4, LOOP_SET_FD, 3 [pid 455] <... futex resumed>) = 0 [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 461] <... set_robust_list resumed>) = 0 [pid 456] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 446] <... futex resumed>) = 0 [pid 444] +++ exited with 0 +++ [pid 461] rt_sigprocmask(SIG_SETMASK, [], [pid 460] <... ioctl resumed>) = 0 [pid 456] memfd_create("syzkaller", 0 [pid 455] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 449] close(12 [pid 448] close(9 [pid 445] close(9 [pid 461] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 460] close(3 [pid 456] <... memfd_create resumed>) = 3 [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=21, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 461] creat("./bus", 000 [pid 456] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 449] close(13 [pid 448] close(10 [pid 445] close(10 [pid 461] <... creat resumed>) = 5 [pid 456] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 461] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 456] close(3 [pid 449] close(14 [pid 448] close(11 [pid 445] close(11 [pid 461] <... futex resumed>) = 1 [pid 456] <... close resumed>) = 0 [pid 455] <... futex resumed>) = 0 [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] <... openat resumed>) = 3 [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 461] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 456] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 455] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] close(15 [pid 448] close(12 [pid 446] close(3 [pid 445] close(12 [pid 301] ioctl(3, LOOP_CLR_FD [pid 461] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 456] <... futex resumed>) = 0 [pid 455] <... futex resumed>) = 0 [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 446] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] <... ioctl resumed>) = 0 [pid 461] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 456] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 455] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 449] close(16 [pid 448] close(13 [pid 446] close(4 [pid 445] close(13 [pid 461] <... mount resumed>) = 0 [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 446] <... close resumed>) = 0 [pid 301] close(3 [pid 461] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] close(17 [pid 448] close(14 [pid 446] close(5 [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 460] <... close resumed>) = 0 [pid 301] <... close resumed>) = 0 [pid 461] <... futex resumed>) = 1 [pid 455] <... futex resumed>) = 0 [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 446] <... close resumed>) = 0 [pid 445] close(14 [pid 301] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 461] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 455] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] close(18 [pid 448] close(15 [pid 446] close(6 [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) ./strace-static-x86_64: Process 462 attached [pid 461] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 460] mkdir("./file0", 0777 [pid 455] <... futex resumed>) = 0 [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 446] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] close(15 [pid 461] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 460] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 455] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 449] close(19 [pid 448] close(16 [pid 446] close(7 [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] <... clone resumed>, child_tidptr=0x555557294750) = 24 [pid 461] <... open resumed>) = 3 [pid 460] mount("/dev/loop4", "./file0", "ext4", MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "nodiscard,barrier,nouid32,grpquota,,errors=continue" [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 446] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] close(16 [pid 461] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] close(20 [pid 446] close(8 [pid 448] close(17 [pid 461] <... futex resumed>) = 1 [pid 455] <... futex resumed>) = 0 [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 446] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 461] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 455] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] close(21 [pid 448] close(18 [pid 446] close(9 [pid 445] close(17 [pid 461] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 455] <... futex resumed>) = 0 [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 446] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 461] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 3, 0 [pid 455] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 449] close(22 [pid 448] close(19 [pid 446] close(10 [pid 445] close(18 [pid 461] <... mmap resumed>) = 0x20000000 [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 446] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 461] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] close(23 [pid 448] close(20 [pid 446] close(11 [pid 461] <... futex resumed>) = 1 [pid 455] <... futex resumed>) = 0 [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 446] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] close(19 [pid 461] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 455] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] close(24 [pid 448] close(21 [pid 446] close(12 [pid 461] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 455] <... futex resumed>) = 0 [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 446] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 461] memfd_create("syzkaller", 0 [pid 449] close(25 [pid 448] close(22 [pid 446] close(13 [pid 461] <... memfd_create resumed>) = 6 [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 446] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] close(20 [pid 461] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 449] close(26 [pid 446] close(14 [pid 461] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] close(23 [pid 446] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 461] close(6 [pid 449] close(27 [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 446] close(15 [pid 445] close(21 [pid 461] <... close resumed>) = 0 [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] close(24 [pid 446] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 461] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 449] close(28 [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 446] close(16 [pid 445] close(22 [pid 461] <... futex resumed>) = 0 [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] close(25 [pid 446] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 461] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 449] close(29 [pid 446] close(17 [pid 462] set_robust_list(0x555557294760, 24 [pid 449] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 446] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] close(23 [pid 446] close(18) = -1 EBADF (Bad file descriptor) [pid 446] close(19) = -1 EBADF (Bad file descriptor) [pid 446] close(20) = -1 EBADF (Bad file descriptor) [pid 446] close(21) = -1 EBADF (Bad file descriptor) [pid 446] close(22) = -1 EBADF (Bad file descriptor) [pid 446] close(23) = -1 EBADF (Bad file descriptor) [pid 446] close(24) = -1 EBADF (Bad file descriptor) [pid 446] close(25) = -1 EBADF (Bad file descriptor) [pid 446] close(26) = -1 EBADF (Bad file descriptor) [pid 446] close(27) = -1 EBADF (Bad file descriptor) [pid 446] close(28) = -1 EBADF (Bad file descriptor) [pid 446] close(29) = -1 EBADF (Bad file descriptor) [pid 446] exit_group(0 [pid 459] <... futex resumed>) = ? [pid 456] <... futex resumed>) = ? [pid 446] <... exit_group resumed>) = ? [pid 459] +++ exited with 0 +++ [pid 456] +++ exited with 0 +++ [pid 446] +++ exited with 0 +++ [pid 462] <... set_robust_list resumed>) = 0 [pid 462] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 462] setpgid(0, 0) = 0 [pid 462] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 462] write(3, "1000", 4) = 4 [pid 449] exit_group(0 [pid 462] close(3 [pid 457] <... futex resumed>) = ? [pid 454] <... futex resumed>) = ? [pid 449] <... exit_group resumed>) = ? [pid 448] close(26 [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=23, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 462] <... close resumed>) = 0 [pid 460] <... mount resumed>) = -1 EINVAL (Invalid argument) [pid 457] +++ exited with 0 +++ [pid 454] +++ exited with 0 +++ [pid 462] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 462] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 460] ioctl(4, LOOP_CLR_FD [pid 449] +++ exited with 0 +++ [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] close(24 [pid 460] <... ioctl resumed>) = 0 [pid 448] close(27 [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 460] close(4 [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] close(25 [pid 305] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 460] <... close resumed>) = 0 [pid 448] close(28 [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 305] <... openat resumed>) = 3 [pid 460] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] close(26 [pid 305] ioctl(3, LOOP_CLR_FD [pid 302] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 460] <... futex resumed>) = 0 [pid 448] close(29 [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 305] <... ioctl resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 460] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 455] close(3 [pid 448] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] close(27 [pid 305] close(3 [pid 302] ioctl(3, LOOP_CLR_FD [pid 455] <... close resumed>) = 0 [pid 448] exit_group(0 [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 305] <... close resumed>) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 458] <... futex resumed>) = ? [pid 455] close(4 [pid 453] <... futex resumed>) = ? [pid 448] <... exit_group resumed>) = ? [pid 445] close(28 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 302] close(3 [pid 458] +++ exited with 0 +++ [pid 455] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 453] +++ exited with 0 +++ [pid 448] +++ exited with 0 +++ [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 302] <... close resumed>) = 0 [pid 455] close(5 [pid 445] close(29 [pid 305] <... clone resumed>, child_tidptr=0x555557294750) = 26 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 455] <... close resumed>) = 0 [pid 445] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 455] close(6 [pid 445] exit_group(0 [pid 303] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 302] <... clone resumed>, child_tidptr=0x555557294750) = 29 [pid 455] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 452] <... futex resumed>) = ? [pid 451] <... futex resumed>) = ? [pid 445] <... exit_group resumed>) = ? [pid 303] <... openat resumed>) = 3 [pid 462] <... rt_sigaction resumed>NULL, 8) = 0 [pid 455] close(7 [pid 452] +++ exited with 0 +++ [pid 451] +++ exited with 0 +++ [pid 303] ioctl(3, LOOP_CLR_FD [pid 462] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 455] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 445] +++ exited with 0 +++ [pid 303] <... ioctl resumed>) = 0 [pid 455] close(8 [pid 303] close(3 [pid 455] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 303] <... close resumed>) = 0 [pid 455] close(9 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 455] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] <... openat resumed>) = 3 [pid 455] close(10 [pid 306] ioctl(3, LOOP_CLR_FD [pid 303] <... clone resumed>, child_tidptr=0x555557294750) = 20 [pid 455] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 455] close(11 [pid 306] close(3 [pid 455] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] <... close resumed>) = 0 [pid 455] close(12 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 455] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 455] close(13 [pid 306] <... clone resumed>, child_tidptr=0x555557294750) = 23 [pid 455] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 455] close(14) = -1 EBADF (Bad file descriptor) [pid 455] close(15) = -1 EBADF (Bad file descriptor) [pid 455] close(16) = -1 EBADF (Bad file descriptor) [pid 455] close(17) = -1 EBADF (Bad file descriptor) [pid 455] close(18) = -1 EBADF (Bad file descriptor) [pid 455] close(19) = -1 EBADF (Bad file descriptor) [pid 455] close(20) = -1 EBADF (Bad file descriptor) [pid 455] close(21) = -1 EBADF (Bad file descriptor) [pid 455] close(22) = -1 EBADF (Bad file descriptor) [pid 455] close(23) = -1 EBADF (Bad file descriptor) [pid 455] close(24) = -1 EBADF (Bad file descriptor) [pid 455] close(25) = -1 EBADF (Bad file descriptor) [pid 455] close(26) = -1 EBADF (Bad file descriptor) [pid 455] close(27) = -1 EBADF (Bad file descriptor) [pid 455] close(28) = -1 EBADF (Bad file descriptor) [pid 455] close(29) = -1 EBADF (Bad file descriptor) [pid 455] exit_group(0 [pid 462] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 461] <... futex resumed>) = ? [pid 460] <... futex resumed>) = ? [pid 455] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 466 attached ./strace-static-x86_64: Process 464 attached ./strace-static-x86_64: Process 463 attached [pid 462] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 461] +++ exited with 0 +++ [pid 460] +++ exited with 0 +++ [pid 455] +++ exited with 0 +++ [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=17, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- [pid 466] set_robust_list(0x555557294760, 24 [pid 464] set_robust_list(0x555557294760, 24 [pid 463] set_robust_list(0x555557294760, 24 [pid 462] <... mmap resumed>) = 0x7efd4eb6c000 ./strace-static-x86_64: Process 465 attached [pid 466] <... set_robust_list resumed>) = 0 [pid 464] <... set_robust_list resumed>) = 0 [pid 463] <... set_robust_list resumed>) = 0 [pid 462] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 465] set_robust_list(0x555557294760, 24 [pid 304] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 465] <... set_robust_list resumed>) = 0 [pid 462] <... mprotect resumed>) = 0 [pid 304] <... openat resumed>) = 3 [pid 465] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 304] ioctl(3, LOOP_CLR_FD [pid 465] <... prctl resumed>) = 0 [pid 304] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 465] setpgid(0, 0 [pid 462] rt_sigprocmask(SIG_BLOCK, ~[], [pid 304] close(3 [pid 465] <... setpgid resumed>) = 0 [pid 463] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 462] <... rt_sigprocmask resumed>[], 8) = 0 [pid 304] <... close resumed>) = 0 [pid 466] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 465] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 462] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 463] <... prctl resumed>) = 0 [pid 466] <... prctl resumed>) = 0 [pid 465] <... openat resumed>) = 3 [pid 464] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 465] write(3, "1000", 4 [pid 304] <... clone resumed>, child_tidptr=0x555557294750) = 20 [pid 465] <... write resumed>) = 4 [pid 463] setpgid(0, 0 [pid 466] setpgid(0, 0 [pid 464] <... prctl resumed>) = 0 [pid 465] close(3 [pid 463] <... setpgid resumed>) = 0 [pid 462] <... clone3 resumed> => {parent_tid=[25]}, 88) = 25 [pid 465] <... close resumed>) = 0 [pid 463] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 462] rt_sigprocmask(SIG_SETMASK, [], [pid 465] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 463] <... openat resumed>) = 3 [pid 462] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] <... futex resumed>) = 0 [pid 462] <... futex resumed>) = 0 [pid 463] write(3, "1000", 4 [pid 465] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 462] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] <... rt_sigaction resumed>NULL, 8) = 0 [pid 463] <... write resumed>) = 4 [pid 462] <... futex resumed>) = 0 [pid 466] <... setpgid resumed>) = 0 [pid 465] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 464] setpgid(0, 0 [pid 463] close(3 [pid 462] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 465] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 465] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb6c000 [pid 465] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 465] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 465] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0}./strace-static-x86_64: Process 468 attached [pid 468] set_robust_list(0x7efd4eb8c9a0, 24 [pid 465] <... clone3 resumed> => {parent_tid=[21]}, 88) = 21 [pid 468] <... set_robust_list resumed>) = 0 [pid 465] rt_sigprocmask(SIG_SETMASK, [], [pid 468] rt_sigprocmask(SIG_SETMASK, [], [pid 465] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 468] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 465] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 468] memfd_create("syzkaller", 0 [pid 465] <... futex resumed>) = 0 [pid 468] <... memfd_create resumed>) = 3 [pid 465] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] <... close resumed>) = 0 [pid 462] <... mmap resumed>) = 0x7efd4eb4b000 [pid 468] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 465] <... futex resumed>) = 0 [pid 463] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 468] <... mmap resumed>) = 0x7efd4674b000 [pid 466] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 465] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 464] <... setpgid resumed>) = 0 [pid 468] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 466] <... openat resumed>) = 3 [pid 465] <... mmap resumed>) = 0x7efd4eb4b000 [pid 463] <... futex resumed>) = 0 [pid 462] <... mprotect resumed>) = 0 [pid 466] write(3, "1000", 4 [pid 465] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 464] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 463] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 462] rt_sigprocmask(SIG_BLOCK, ~[], [pid 468] <... write resumed>) = 262144 [pid 466] <... write resumed>) = 4 [pid 465] <... mprotect resumed>) = 0 [pid 463] <... rt_sigaction resumed>NULL, 8) = 0 [pid 462] <... rt_sigprocmask resumed>[], 8) = 0 [pid 466] close(3 [pid 465] rt_sigprocmask(SIG_BLOCK, ~[], [pid 464] <... openat resumed>) = 3 [pid 463] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 462] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 466] <... close resumed>) = 0 [pid 465] <... rt_sigprocmask resumed>[], 8) = 0 [pid 463] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 465] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 463] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 468] munmap(0x7efd4674b000, 262144 [pid 466] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 464] write(3, "1000", 4 [pid 462] <... clone3 resumed> => {parent_tid=[26]}, 88) = 26 [pid 468] <... munmap resumed>) = 0 [pid 466] <... futex resumed>) = 0 [pid 465] <... clone3 resumed> => {parent_tid=[22]}, 88) = 22 [pid 463] <... mmap resumed>) = 0x7efd4eb6c000 [pid 462] rt_sigprocmask(SIG_SETMASK, [], [pid 464] <... write resumed>) = 4 [pid 468] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 466] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 465] rt_sigprocmask(SIG_SETMASK, [], [pid 464] close(3 [pid 463] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 462] <... rt_sigprocmask resumed>NULL, 8) = 0 [ 22.780828][ T460] loop4: detected capacity change from 0 to 512 [ 22.805561][ T345] EXT4-fs error (device loop2): ext4_validate_block_bitmap:390: comm ext4lazyinit: bg 0: bad block bitmap checksum [ 22.815616][ T460] EXT4-fs warning (device loop4): read_mmp_block:107: Error -74 while reading MMP block 12 ./strace-static-x86_64: Process 469 attached [pid 468] <... openat resumed>) = 4 [pid 466] <... rt_sigaction resumed>NULL, 8) = 0 [pid 465] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 464] <... close resumed>) = 0 [pid 463] <... mprotect resumed>) = 0 [pid 462] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 469] set_robust_list(0x7efd4eb8c9a0, 24 [pid 468] ioctl(4, LOOP_SET_FD, 3 [pid 466] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 465] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 464] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] rt_sigprocmask(SIG_BLOCK, ~[], [pid 462] <... futex resumed>) = 0 [pid 469] <... set_robust_list resumed>) = 0 [pid 468] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 466] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 465] <... futex resumed>) = 0 [pid 464] <... futex resumed>) = 0 [pid 463] <... rt_sigprocmask resumed>[], 8) = 0 [pid 462] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 469] rt_sigprocmask(SIG_SETMASK, [], [pid 468] ioctl(4, LOOP_CLR_FD [pid 466] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 465] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 464] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 463] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0}./strace-static-x86_64: Process 470 attached [pid 469] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 468] <... ioctl resumed>) = 0 [pid 466] <... mmap resumed>) = 0x7efd4eb6c000 [pid 464] <... rt_sigaction resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 471 attached [pid 466] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 464] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 470] set_robust_list(0x7efd4eb6b9a0, 24 [pid 469] memfd_create("syzkaller", 0 [pid 471] set_robust_list(0x7efd4eb6b9a0, 24 [pid 470] <... set_robust_list resumed>) = 0 [pid 469] <... memfd_create resumed>) = 3 [pid 466] <... mprotect resumed>) = 0 [pid 464] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 463] <... clone3 resumed> => {parent_tid=[27]}, 88) = 27 [pid 471] <... set_robust_list resumed>) = 0 [pid 470] rt_sigprocmask(SIG_SETMASK, [], [pid 469] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 466] rt_sigprocmask(SIG_BLOCK, ~[], [pid 464] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 463] rt_sigprocmask(SIG_SETMASK, [], [pid 471] rt_sigprocmask(SIG_SETMASK, [], [pid 470] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 469] <... mmap resumed>) = 0x7efd4674b000 [pid 466] <... rt_sigprocmask resumed>[], 8) = 0 [pid 464] <... mmap resumed>) = 0x7efd4eb6c000 [pid 463] <... rt_sigprocmask resumed>NULL, 8) = 0 ./strace-static-x86_64: Process 467 attached [pid 471] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 470] creat("./bus", 000 [pid 469] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 468] ioctl(4, LOOP_SET_FD, 3 [pid 466] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 464] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 463] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 471] creat("./bus", 000 [pid 470] <... creat resumed>) = 5 [pid 469] <... write resumed>) = 262144 [pid 468] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 471] <... creat resumed>) = 4 [pid 470] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 469] munmap(0x7efd4674b000, 262144 [pid 468] close(4 [pid 471] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 470] <... futex resumed>) = 1 [pid 469] <... munmap resumed>) = 0 [pid 468] <... close resumed>) = 0 [pid 471] <... futex resumed>) = 1 [pid 470] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 469] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 468] close(3 [pid 465] <... futex resumed>) = 0 ./strace-static-x86_64: Process 472 attached [pid 471] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 469] <... openat resumed>) = 5 [pid 468] <... close resumed>) = 0 [pid 465] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 464] <... mprotect resumed>) = 0 [pid 463] <... futex resumed>) = 0 [pid 462] <... futex resumed>) = 0 [pid 467] set_robust_list(0x555557294760, 24 [pid 471] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 469] ioctl(5, LOOP_SET_FD, 3 [pid 468] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] <... clone3 resumed> => {parent_tid=[24]}, 88) = 24 [pid 465] <... futex resumed>) = 0 [pid 464] rt_sigprocmask(SIG_BLOCK, ~[], [pid 463] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] set_robust_list(0x7efd4eb8c9a0, 24 [pid 471] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 469] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 468] <... futex resumed>) = 0 [pid 467] <... set_robust_list resumed>) = 0 [pid 466] rt_sigprocmask(SIG_SETMASK, [], [pid 465] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 464] <... rt_sigprocmask resumed>[], 8) = 0 [pid 463] <... futex resumed>) = 0 [pid 462] <... futex resumed>) = 0 [pid 472] <... set_robust_list resumed>) = 0 [pid 471] <... mount resumed>) = 0 [pid 469] ioctl(5, LOOP_CLR_FD [pid 468] mount("/dev/loop5", "./bus", NULL, MS_BIND, NULL [pid 471] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 469] <... ioctl resumed>) = 0 [pid 468] <... mount resumed>) = 0 [pid 471] <... futex resumed>) = 1 [pid 468] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] <... futex resumed>) = 0 [pid 471] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 468] <... futex resumed>) = 0 [pid 465] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 471] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 468] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 465] <... futex resumed>) = 0 [pid 471] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 465] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 471] <... open resumed>) = 6 [pid 471] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 465] <... futex resumed>) = 0 [pid 471] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 465] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 471] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 465] <... futex resumed>) = 0 [pid 471] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 465] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 471] <... mmap resumed>) = 0x20000000 [pid 466] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 464] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 463] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 462] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 471] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 469] ioctl(5, LOOP_SET_FD, 3 [pid 466] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] <... mmap resumed>) = 0x7efd4eb4b000 [pid 462] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 471] <... futex resumed>) = 1 [pid 469] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 467] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 466] <... futex resumed>) = 0 [pid 465] <... futex resumed>) = 0 [pid 464] <... clone3 resumed> => {parent_tid=[30]}, 88) = 30 [pid 463] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 462] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] rt_sigprocmask(SIG_SETMASK, [], ./strace-static-x86_64: Process 474 attached ./strace-static-x86_64: Process 473 attached [pid 471] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 469] close(5 [pid 468] <... futex resumed>) = 0 [pid 467] <... prctl resumed>) = 0 [pid 466] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 464] rt_sigprocmask(SIG_SETMASK, [], [pid 463] <... mprotect resumed>) = 0 [pid 462] <... futex resumed>) = 1 [pid 472] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 471] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 469] <... close resumed>) = 0 [pid 468] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 467] setpgid(0, 0 [pid 466] <... futex resumed>) = 0 [pid 465] <... futex resumed>) = 0 [pid 464] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 463] rt_sigprocmask(SIG_BLOCK, ~[], [pid 462] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 471] memfd_create("syzkaller", 0 [pid 469] close(3 [pid 468] <... open resumed>) = 3 [pid 467] <... setpgid resumed>) = 0 [pid 466] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 464] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] <... rt_sigprocmask resumed>[], 8) = 0 [pid 472] memfd_create("syzkaller", 0 [pid 474] set_robust_list(0x7efd4eb8c9a0, 24 [pid 471] <... memfd_create resumed>) = 5 [pid 469] <... close resumed>) = 0 [pid 468] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 467] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 466] <... mmap resumed>) = 0x7efd4eb4b000 [pid 464] <... futex resumed>) = 0 [pid 463] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 474] <... set_robust_list resumed>) = 0 [pid 472] <... memfd_create resumed>) = 3 [pid 471] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 469] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 468] <... futex resumed>) = 1 [pid 466] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 464] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] <... futex resumed>) = 0 [pid 467] <... openat resumed>) = 3 [pid 474] rt_sigprocmask(SIG_SETMASK, [], [pid 472] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 471] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 469] <... futex resumed>) = 0 [pid 468] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 466] <... mprotect resumed>) = 0 [pid 464] <... futex resumed>) = 0 [pid 463] <... clone3 resumed> => {parent_tid=[28]}, 88) = 28 [pid 462] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 474] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 473] set_robust_list(0x7efd4eb8c9a0, 24 [pid 472] <... mmap resumed>) = 0x7efd4674b000 [pid 471] close(5 [pid 469] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 468] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 467] write(3, "1000", 4 [pid 466] rt_sigprocmask(SIG_BLOCK, ~[], [pid 464] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 463] rt_sigprocmask(SIG_SETMASK, [], [pid 462] <... futex resumed>) = 0 [pid 474] memfd_create("syzkaller", 0 [pid 473] <... set_robust_list resumed>) = 0 [pid 471] <... close resumed>) = 0 [pid 468] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 3, 0 [pid 467] <... write resumed>) = 4 [pid 466] <... rt_sigprocmask resumed>[], 8) = 0 [pid 464] <... mmap resumed>) = 0x7efd4eb4b000 [pid 463] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 462] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 475 attached [pid 474] <... memfd_create resumed>) = 3 [pid 473] rt_sigprocmask(SIG_SETMASK, [], [pid 471] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 468] <... mmap resumed>) = 0x20000000 [pid 467] close(3 [pid 466] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 464] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 463] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 474] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 473] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 472] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 471] <... futex resumed>) = 0 [pid 468] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 467] <... close resumed>) = 0 [pid 465] close(3 [pid 464] <... mprotect resumed>) = 0 [pid 463] <... futex resumed>) = 0 [pid 474] <... mmap resumed>) = 0x7efd4674b000 [pid 473] memfd_create("syzkaller", 0 [pid 471] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 468] <... futex resumed>) = 1 [pid 467] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] <... clone3 resumed> => {parent_tid=[25]}, 88) = 25 [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] rt_sigprocmask(SIG_BLOCK, ~[], [pid 463] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 462] <... futex resumed>) = 0 ./strace-static-x86_64: Process 476 attached [pid 475] set_robust_list(0x7efd4eb6b9a0, 24 [pid 474] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 473] <... memfd_create resumed>) = 3 [pid 472] <... write resumed>) = 262144 [pid 468] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 467] <... futex resumed>) = 0 [pid 466] rt_sigprocmask(SIG_SETMASK, [], [pid 465] close(4 [pid 464] <... rt_sigprocmask resumed>[], 8) = 0 [pid 462] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 476] set_robust_list(0x7efd4eb6b9a0, 24 [pid 475] <... set_robust_list resumed>) = 0 [pid 474] <... write resumed>) = 262144 [pid 473] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 465] <... close resumed>) = 0 [pid 475] rt_sigprocmask(SIG_SETMASK, [], [pid 474] munmap(0x7efd4674b000, 262144 [pid 473] <... mmap resumed>) = 0x7efd4674b000 [pid 465] close(5 [pid 476] <... set_robust_list resumed>) = 0 [pid 475] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 474] <... munmap resumed>) = 0 [pid 473] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 472] munmap(0x7efd4674b000, 262144 [pid 468] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 467] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 466] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 462] <... futex resumed>) = 0 [pid 476] rt_sigprocmask(SIG_SETMASK, [], [pid 475] creat("./bus", 000 [pid 474] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 473] <... write resumed>) = 262144 [pid 472] <... munmap resumed>) = 0 [pid 468] memfd_create("syzkaller", 0 [pid 467] <... rt_sigaction resumed>NULL, 8) = 0 [pid 466] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] close(6 [pid 476] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 475] <... creat resumed>) = 4 [pid 474] <... openat resumed>) = 4 [pid 473] munmap(0x7efd4674b000, 262144 [pid 472] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 468] <... memfd_create resumed>) = 4 [pid 467] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 466] <... futex resumed>) = 0 [pid 465] <... close resumed>) = 0 [pid 464] <... clone3 resumed> => {parent_tid=[31]}, 88) = 31 [pid 476] creat("./bus", 000 [pid 475] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 474] ioctl(4, LOOP_SET_FD, 3 [pid 473] <... munmap resumed>) = 0 [pid 472] <... openat resumed>) = 5 [pid 468] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 467] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 466] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 465] close(7 [pid 464] rt_sigprocmask(SIG_SETMASK, [], [pid 475] <... futex resumed>) = 1 [pid 474] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 473] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 472] ioctl(5, LOOP_SET_FD, 3 [pid 468] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 467] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 463] <... futex resumed>) = 0 [pid 476] <... creat resumed>) = 4 [pid 475] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 474] ioctl(4, LOOP_CLR_FD [pid 473] <... openat resumed>) = 5 [pid 472] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 468] close(4 [pid 467] <... mmap resumed>) = 0x7efd4eb6c000 [pid 465] close(8 [pid 464] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 476] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 475] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 474] <... ioctl resumed>) = 0 [pid 473] ioctl(5, LOOP_SET_FD, 3 [pid 472] ioctl(5, LOOP_CLR_FD [pid 468] <... close resumed>) = 0 [pid 467] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... futex resumed>) = 0 [pid 463] <... futex resumed>) = 0 ./strace-static-x86_64: Process 477 attached [pid 476] <... futex resumed>) = 1 [pid 475] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 472] <... ioctl resumed>) = 0 [pid 468] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 467] <... mprotect resumed>) = 0 [pid 466] <... futex resumed>) = 0 [pid 465] close(9 [pid 464] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 463] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 477] set_robust_list(0x7efd4eb6b9a0, 24 [pid 476] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 475] <... mount resumed>) = 0 [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 468] <... futex resumed>) = 0 [pid 477] <... set_robust_list resumed>) = 0 [pid 476] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 475] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 467] rt_sigprocmask(SIG_BLOCK, ~[], [pid 466] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] close(10 [pid 463] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 462] close(3 [pid 477] rt_sigprocmask(SIG_SETMASK, [], [pid 475] <... futex resumed>) = 0 [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 477] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 475] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 474] ioctl(4, LOOP_SET_FD, 3 [pid 465] close(11 [pid 477] creat("./bus", 000 [pid 476] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 474] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 468] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 467] <... rt_sigprocmask resumed>[], 8) = 0 [pid 466] <... futex resumed>) = 0 [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] <... close resumed>) = 0 [pid 477] <... creat resumed>) = 5 [pid 476] <... mount resumed>) = 0 [pid 475] <... futex resumed>) = 0 [pid 474] close(4 [pid 472] ioctl(5, LOOP_SET_FD, 3 [pid 467] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 466] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 465] close(12 [pid 463] <... futex resumed>) = 1 [pid 462] close(4 [pid 477] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 476] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 475] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 474] <... close resumed>) = 0 [pid 472] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 477] <... futex resumed>) = 1 [pid 476] <... futex resumed>) = 0 [pid 475] <... open resumed>) = 6 [pid 474] close(3 [pid 472] close(5 [pid 466] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 465] close(13 [pid 464] <... futex resumed>) = 0 [pid 463] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 477] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 476] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 475] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 474] <... close resumed>) = 0 [pid 472] <... close resumed>) = 0 [pid 467] <... clone3 resumed> => {parent_tid=[21]}, 88) = 21 [pid 466] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 462] close(5 [pid 477] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 476] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 475] <... futex resumed>) = 0 [pid 474] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 473] <... ioctl resumed>) = 0 [pid 472] close(3 [pid 467] rt_sigprocmask(SIG_SETMASK, [], [pid 466] <... futex resumed>) = 0 [pid 465] close(14 [pid 464] <... futex resumed>) = 0 [pid 463] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] <... close resumed>) = 0 [pid 477] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 476] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 475] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 474] <... futex resumed>) = 0 [pid 473] close(3 [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 477] <... mount resumed>) = 0 [pid 476] <... open resumed>) = 6 [pid 475] <... mmap resumed>) = 0x20000000 [pid 474] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 473] <... close resumed>) = 0 [pid 472] <... close resumed>) = 0 [pid 467] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 466] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 465] close(15 [pid 464] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 463] <... futex resumed>) = 0 [pid 462] close(6 [pid 477] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 476] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 475] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 473] mkdir("./file0", 0777 [pid 472] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 467] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 463] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 477] <... futex resumed>) = 0 [pid 476] <... futex resumed>) = 0 [pid 475] <... futex resumed>) = 0 [pid 473] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 472] <... futex resumed>) = 0 [pid 467] <... futex resumed>) = 0 [pid 466] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 465] close(16 [pid 464] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 462] close(7 [pid 477] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 476] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 475] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 474] <... futex resumed>) = 0 [pid 473] mount("/dev/loop1", 0x20000000, 0x200005c0, MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "nodiscard,barrier,nouid32,grpquota,,errors=continue" [pid 472] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 467] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] <... futex resumed>) = 0 [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... futex resumed>) = 1 [pid 463] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) ./strace-static-x86_64: Process 478 attached [pid 476] <... mmap resumed>) = 0x20000000 [pid 474] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 473] <... mount resumed>) = -1 ENOENT (No such file or directory) [pid 472] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 467] <... futex resumed>) = 0 [pid 466] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 465] close(17 [pid 464] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 463] <... futex resumed>) = 0 [pid 462] close(8 [pid 478] set_robust_list(0x7efd4eb8c9a0, 24 [pid 476] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 474] <... open resumed>) = 3 [pid 473] ioctl(5, LOOP_CLR_FD [pid 472] memfd_create("syzkaller", 0 [pid 467] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 466] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 478] <... set_robust_list resumed>) = 0 [pid 476] <... futex resumed>) = 0 [pid 474] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 473] <... ioctl resumed>) = 0 [pid 472] <... memfd_create resumed>) = 3 [pid 467] <... mmap resumed>) = 0x7efd4eb4b000 [pid 466] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] close(9 [pid 478] rt_sigprocmask(SIG_SETMASK, [], [pid 476] memfd_create("syzkaller", 0 [pid 474] <... futex resumed>) = 1 [pid 473] close(5 [pid 472] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 467] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 466] <... futex resumed>) = 0 [pid 465] close(18 [pid 464] <... futex resumed>) = 0 [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 478] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 476] <... memfd_create resumed>) = 3 [pid 474] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 473] <... close resumed>) = 0 [pid 472] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 467] <... mprotect resumed>) = 0 [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 462] close(10 [pid 478] memfd_create("syzkaller", 0 [pid 476] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 474] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 473] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] close(3 [pid 467] rt_sigprocmask(SIG_BLOCK, ~[], [pid 465] close(19 [pid 464] <... futex resumed>) = 0 [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 478] <... memfd_create resumed>) = 3 [pid 476] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 474] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 3, 0 [pid 473] <... futex resumed>) = 0 [pid 472] <... close resumed>) = 0 [pid 467] <... rt_sigprocmask resumed>[], 8) = 0 [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 462] close(11 [pid 478] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 476] close(3 [pid 474] <... mmap resumed>) = 0x20000000 [pid 473] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 472] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 467] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 465] close(20 [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 478] <... mmap resumed>) = 0x7efd4674b000 [pid 476] <... close resumed>) = 0 [pid 474] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] <... futex resumed>) = 0 [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] close(3 [pid 462] close(12 [pid 476] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 472] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 467] <... clone3 resumed> => {parent_tid=[22]}, 88) = 22 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 476] <... futex resumed>) = 0 [pid 467] rt_sigprocmask(SIG_SETMASK, [], [pid 463] close(4 [pid 462] close(13 [pid 476] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 467] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 466] close(3 [pid 463] <... close resumed>) = 0 [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 478] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 474] <... futex resumed>) = 1 [pid 467] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 465] close(21 [pid 464] <... futex resumed>) = 0 [pid 463] close(5 [pid 462] close(14 [pid 467] <... futex resumed>) = 0 [pid 466] close(4 [pid 464] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 467] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 466] <... close resumed>) = 0 [pid 464] <... futex resumed>) = 0 [pid 463] close(6 [pid 462] close(15 [pid 478] <... write resumed>) = 262144 [pid 474] memfd_create("syzkaller", 0 [pid 466] close(5 [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] <... close resumed>) = 0 [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) ./strace-static-x86_64: Process 479 attached [pid 478] munmap(0x7efd4674b000, 262144 [pid 474] <... memfd_create resumed>) = 4 [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 465] close(22 [pid 463] close(7 [pid 462] close(16 [pid 478] <... munmap resumed>) = 0 [pid 474] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 466] close(6 [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 479] set_robust_list(0x7efd4eb6b9a0, 24 [pid 478] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 474] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 466] <... close resumed>) = 0 [pid 479] <... set_robust_list resumed>) = 0 [pid 465] close(23 [pid 463] close(8 [pid 462] close(17 [pid 479] rt_sigprocmask(SIG_SETMASK, [], [pid 478] <... openat resumed>) = 4 [pid 474] close(4 [pid 466] close(7 [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 479] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 478] ioctl(4, LOOP_SET_FD, 3 [pid 474] <... close resumed>) = 0 [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 465] close(24 [pid 463] close(9 [pid 462] close(18 [pid 479] creat("./bus", 000 [pid 474] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] close(8 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] close(10 [pid 462] close(19 [pid 466] close(9 [pid 464] close(3 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... close resumed>) = 0 [pid 463] close(11 [pid 462] close(20 [pid 466] close(10 [pid 464] close(4 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] close(12 [pid 462] close(21 [pid 466] close(11 [pid 464] close(5 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... close resumed>) = 0 [pid 463] close(13 [pid 462] close(22 [pid 466] close(12 [pid 464] close(6 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] close(14 [pid 462] close(23 [pid 466] close(13 [pid 464] close(7 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] close(15 [pid 462] close(24 [pid 466] close(14 [pid 464] close(8 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] close(16 [pid 462] close(25 [pid 466] close(15 [pid 464] close(9 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] close(17 [pid 462] close(26 [pid 466] close(16 [pid 464] close(10 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] close(18 [pid 462] close(27 [pid 466] close(17 [pid 464] close(11 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] close(19 [pid 462] close(28 [pid 479] <... creat resumed>) = 5 [pid 474] <... futex resumed>) = 0 [pid 466] close(18 [pid 465] close(25 [pid 464] close(12 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 479] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] <... ioctl resumed>) = 0 [pid 474] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] close(20 [pid 462] close(29 [pid 479] <... futex resumed>) = 1 [pid 478] close(3 [pid 467] <... futex resumed>) = 0 [pid 466] close(19 [pid 465] close(26 [pid 464] close(13 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 462] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 479] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 478] <... close resumed>) = 0 [pid 467] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] close(21 [pid 462] exit_group(0 [pid 479] <... mount resumed>) = 0 [pid 478] mkdir("./file0", 0777 [pid 470] <... futex resumed>) = ? [pid 468] <... futex resumed>) = ? [pid 467] <... futex resumed>) = 0 [pid 466] close(20 [pid 465] close(27 [pid 464] close(14 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 462] <... exit_group resumed>) = ? [pid 479] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 478] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 470] +++ exited with 0 +++ [pid 468] +++ exited with 0 +++ [pid 467] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] close(22 [pid 462] +++ exited with 0 +++ [pid 479] <... futex resumed>) = 0 [pid 478] mount("/dev/loop4", "./file0", "ext4", MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "nodiscard,barrier,nouid32,grpquota,,errors=continue" [pid 467] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 466] close(21 [pid 465] close(28 [pid 464] close(15 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 301] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=24, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 479] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 467] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] close(23 [pid 479] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 467] <... futex resumed>) = 0 [pid 466] close(22 [pid 465] close(29 [pid 464] close(16 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 479] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 467] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 465] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] close(24 [pid 479] <... open resumed>) = 3 [pid 466] close(23 [pid 465] exit_group(0 [pid 464] close(17 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 479] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 471] <... futex resumed>) = ? [pid 469] <... futex resumed>) = ? [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 465] <... exit_group resumed>) = ? [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] close(25 [pid 479] <... futex resumed>) = 1 [pid 471] +++ exited with 0 +++ [pid 469] +++ exited with 0 +++ [pid 467] <... futex resumed>) = 0 [pid 466] close(24 [pid 465] +++ exited with 0 +++ [pid 464] close(18 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [ 22.894503][ T473] loop1: detected capacity change from 0 to 512 [ 22.930197][ T478] loop4: detected capacity change from 0 to 512 [pid 301] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 479] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 467] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] close(26 [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 301] <... openat resumed>) = 3 [pid 479] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 301] ioctl(3, LOOP_CLR_FD [pid 479] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 3, 0 [pid 301] <... ioctl resumed>) = 0 [pid 467] <... futex resumed>) = 0 [pid 466] close(25 [pid 464] close(19 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 303] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 301] close(3 [pid 467] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] close(27 [pid 303] <... openat resumed>) = 3 [pid 301] <... close resumed>) = 0 [pid 479] <... mmap resumed>) = 0x20000000 [pid 466] close(26 [pid 464] close(20 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 303] ioctl(3, LOOP_CLR_FD [pid 301] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] close(28 [pid 303] <... ioctl resumed>) = 0 [pid 466] close(27 [pid 464] close(21 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 303] close(3 [pid 301] <... clone resumed>, child_tidptr=0x555557294750) = 27 [pid 479] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] close(29 [pid 303] <... close resumed>) = 0 [pid 466] close(28 [pid 464] close(22 [pid 463] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 463] exit_group(0 [pid 475] <... futex resumed>) = ? [pid 472] <... futex resumed>) = ? [pid 466] close(29 [pid 464] close(23 [pid 463] <... exit_group resumed>) = ? [pid 303] <... clone resumed>, child_tidptr=0x555557294750) = 23 [pid 479] <... futex resumed>) = 1 [pid 475] +++ exited with 0 +++ [pid 472] +++ exited with 0 +++ [pid 467] <... futex resumed>) = 0 [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 479] memfd_create("syzkaller", 0 [pid 467] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 479] <... memfd_create resumed>) = 6 [pid 467] <... futex resumed>) = 0 [pid 463] +++ exited with 0 +++ [pid 479] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 466] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 464] close(24 [pid 479] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 466] exit_group(0 [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 479] close(6 [pid 476] <... futex resumed>) = ? [pid 473] <... futex resumed>) = ? [pid 466] <... exit_group resumed>) = ? [pid 464] close(25 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 479] <... close resumed>) = 0 [pid 476] +++ exited with 0 +++ [pid 473] +++ exited with 0 +++ [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 479] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 479] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 305] <... restart_syscall resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 464] close(26 [pid 305] <... openat resumed>) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 483 attached [pid 466] +++ exited with 0 +++ [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 483] set_robust_list(0x555557294760, 24 [pid 464] close(27 [pid 305] <... clone resumed>, child_tidptr=0x555557294750) = 29 [pid 483] <... set_robust_list resumed>) = 0 [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=23, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 483] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 464] close(28 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 483] <... prctl resumed>) = 0 [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] <... openat resumed>) = 3 [pid 483] setpgid(0, 0 [pid 464] close(29 [pid 306] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 482 attached [pid 483] <... setpgid resumed>) = 0 [pid 464] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 306] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 483] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 482] set_robust_list(0x555557294760, 24 [pid 464] exit_group(0 [pid 306] close(3 [pid 483] <... openat resumed>) = 3 [pid 482] <... set_robust_list resumed>) = 0 [pid 477] <... futex resumed>) = ? [pid 474] <... futex resumed>) = ? [pid 464] <... exit_group resumed>) = ? [pid 306] <... close resumed>) = 0 ./strace-static-x86_64: Process 484 attached [pid 483] write(3, "1000", 4 [pid 482] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 477] +++ exited with 0 +++ [pid 474] +++ exited with 0 +++ [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 484] set_robust_list(0x555557294760, 24 [pid 483] <... write resumed>) = 4 [pid 482] <... prctl resumed>) = 0 [pid 464] +++ exited with 0 +++ [pid 484] <... set_robust_list resumed>) = 0 [pid 483] close(3 [pid 482] setpgid(0, 0 [pid 306] <... clone resumed>, child_tidptr=0x555557294750) = 26 [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=29, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 484] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 483] <... close resumed>) = 0 [pid 482] <... setpgid resumed>) = 0 [pid 484] <... prctl resumed>) = 0 [pid 483] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 482] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 484] setpgid(0, 0 [pid 483] <... futex resumed>) = 0 [pid 482] <... openat resumed>) = 3 [pid 484] <... setpgid resumed>) = 0 [pid 483] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 482] write(3, "1000", 4 [pid 484] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 483] <... rt_sigaction resumed>NULL, 8) = 0 [pid 482] <... write resumed>) = 4 [pid 484] <... openat resumed>) = 3 [pid 483] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 482] close(3 [pid 484] write(3, "1000", 4 [pid 483] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 482] <... close resumed>) = 0 [pid 484] <... write resumed>) = 4 [pid 483] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 482] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 302] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 484] close(3 [pid 483] <... mmap resumed>) = 0x7efd4eb6c000 [pid 482] <... futex resumed>) = 0 [pid 302] <... openat resumed>) = 3 [pid 484] <... close resumed>) = 0 [pid 483] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 482] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 302] ioctl(3, LOOP_CLR_FD [pid 484] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] <... mprotect resumed>) = 0 [pid 482] <... rt_sigaction resumed>NULL, 8) = 0 [pid 302] <... ioctl resumed>) = 0 [pid 484] <... futex resumed>) = 0 [pid 483] rt_sigprocmask(SIG_BLOCK, ~[], [pid 482] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 302] close(3 [pid 484] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 483] <... rt_sigprocmask resumed>[], 8) = 0 [pid 482] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 302] <... close resumed>) = 0 [pid 484] <... rt_sigaction resumed>NULL, 8) = 0 [pid 483] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 482] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 484] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 482] <... mmap resumed>) = 0x7efd4eb6c000 [pid 484] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 483] <... clone3 resumed> => {parent_tid=[24]}, 88) = 24 [pid 482] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 302] <... clone resumed>, child_tidptr=0x555557294750) = 32 [pid 484] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 483] rt_sigprocmask(SIG_SETMASK, [], [pid 482] <... mprotect resumed>) = 0 [pid 484] <... mmap resumed>) = 0x7efd4eb6c000 [pid 483] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 482] rt_sigprocmask(SIG_BLOCK, ~[], [pid 484] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 483] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 482] <... rt_sigprocmask resumed>[], 8) = 0 [pid 484] <... mprotect resumed>) = 0 [pid 483] <... futex resumed>) = 0 [pid 482] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 484] rt_sigprocmask(SIG_BLOCK, ~[], [pid 483] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 485 attached [pid 484] <... rt_sigprocmask resumed>[], 8) = 0 [pid 483] <... futex resumed>) = 0 [pid 482] <... clone3 resumed> => {parent_tid=[28]}, 88) = 28 [pid 485] set_robust_list(0x555557294760, 24 [pid 484] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 483] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 482] rt_sigprocmask(SIG_SETMASK, [], [pid 485] <... set_robust_list resumed>) = 0 [pid 483] <... mmap resumed>) = 0x7efd4eb4b000 [pid 482] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 485] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 484] <... clone3 resumed> => {parent_tid=[30]}, 88) = 30 [pid 483] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 482] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 487 attached [pid 485] <... prctl resumed>) = 0 [pid 484] rt_sigprocmask(SIG_SETMASK, [], [pid 483] <... mprotect resumed>) = 0 [pid 482] <... futex resumed>) = 0 [pid 487] set_robust_list(0x555557294760, 24 [pid 485] setpgid(0, 0 [pid 484] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 483] rt_sigprocmask(SIG_BLOCK, ~[], [pid 482] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 487] <... set_robust_list resumed>) = 0 [pid 485] <... setpgid resumed>) = 0 [pid 484] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] <... rt_sigprocmask resumed>[], 8) = 0 [pid 482] <... futex resumed>) = 0 [pid 487] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 485] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 484] <... futex resumed>) = 0 [pid 483] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 482] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0./strace-static-x86_64: Process 486 attached [pid 487] <... prctl resumed>) = 0 [pid 485] <... openat resumed>) = 3 [pid 484] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 482] <... mmap resumed>) = 0x7efd4eb4b000 [pid 484] <... futex resumed>) = 0 [pid 483] <... clone3 resumed> => {parent_tid=[25]}, 88) = 25 [pid 482] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 484] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 483] rt_sigprocmask(SIG_SETMASK, [], [pid 482] <... mprotect resumed>) = 0 [pid 484] <... mmap resumed>) = 0x7efd4eb4b000 [pid 483] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 482] rt_sigprocmask(SIG_BLOCK, ~[], ./strace-static-x86_64: Process 489 attached ./strace-static-x86_64: Process 488 attached [pid 487] setpgid(0, 0 [pid 486] set_robust_list(0x7efd4eb8c9a0, 24 [pid 485] write(3, "1000", 4 [pid 484] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 483] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 482] <... rt_sigprocmask resumed>[], 8) = 0 [pid 489] set_robust_list(0x7efd4eb8c9a0, 24 [pid 488] set_robust_list(0x7efd4eb8c9a0, 24 [pid 487] <... setpgid resumed>) = 0 [pid 486] <... set_robust_list resumed>) = 0 [pid 485] <... write resumed>) = 4 [pid 484] <... mprotect resumed>) = 0 [pid 483] <... futex resumed>) = 0 [pid 482] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 489] <... set_robust_list resumed>) = 0 [pid 488] <... set_robust_list resumed>) = 0 [pid 487] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 486] rt_sigprocmask(SIG_SETMASK, [], [pid 485] close(3 [pid 484] rt_sigprocmask(SIG_BLOCK, ~[], [pid 483] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 489] rt_sigprocmask(SIG_SETMASK, [], [pid 488] rt_sigprocmask(SIG_SETMASK, [], [pid 487] <... openat resumed>) = 3 [pid 486] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 485] <... close resumed>) = 0 [pid 484] <... rt_sigprocmask resumed>[], 8) = 0 [pid 482] <... clone3 resumed> => {parent_tid=[29]}, 88) = 29 ./strace-static-x86_64: Process 490 attached [pid 489] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 488] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 487] write(3, "1000", 4 [pid 486] memfd_create("syzkaller", 0 [pid 485] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 484] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 482] rt_sigprocmask(SIG_SETMASK, [], [pid 490] set_robust_list(0x7efd4eb6b9a0, 24 [pid 489] memfd_create("syzkaller", 0 [pid 488] memfd_create("syzkaller", 0 [pid 487] <... write resumed>) = 4 [pid 486] <... memfd_create resumed>) = 3 [pid 485] <... futex resumed>) = 0 [pid 482] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 490] <... set_robust_list resumed>) = 0 [pid 489] <... memfd_create resumed>) = 3 [pid 488] <... memfd_create resumed>) = 3 [pid 487] close(3 [pid 486] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 485] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 484] <... clone3 resumed> => {parent_tid=[31]}, 88) = 31 [pid 482] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 490] rt_sigprocmask(SIG_SETMASK, [], [pid 489] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 488] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 487] <... close resumed>) = 0 [pid 486] <... mmap resumed>) = 0x7efd4674b000 [pid 485] <... rt_sigaction resumed>NULL, 8) = 0 [pid 484] rt_sigprocmask(SIG_SETMASK, [], [pid 482] <... futex resumed>) = 0 [pid 490] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 489] <... mmap resumed>) = 0x7efd4674b000 [pid 488] <... mmap resumed>) = 0x7efd4674b000 [pid 487] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 485] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 484] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 482] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 490] creat("./bus", 000 [pid 489] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 488] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 487] <... futex resumed>) = 0 [pid 486] <... write resumed>) = 262144 [pid 485] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 484] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 491 attached [pid 490] <... creat resumed>) = 4 [pid 489] <... write resumed>) = 262144 [pid 488] <... write resumed>) = 262144 [pid 487] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 486] munmap(0x7efd4674b000, 262144 [pid 485] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 484] <... futex resumed>) = 0 [pid 491] set_robust_list(0x7efd4eb6b9a0, 24 [pid 490] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 489] munmap(0x7efd4674b000, 262144 [pid 488] munmap(0x7efd4674b000, 262144 [pid 487] <... rt_sigaction resumed>NULL, 8) = 0 [pid 486] <... munmap resumed>) = 0 [pid 485] <... mmap resumed>) = 0x7efd4eb6c000 [pid 484] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 491] <... set_robust_list resumed>) = 0 [pid 490] <... futex resumed>) = 1 [pid 489] <... munmap resumed>) = 0 [pid 488] <... munmap resumed>) = 0 [pid 487] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 486] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 485] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 483] <... futex resumed>) = 0 ./strace-static-x86_64: Process 492 attached [pid 491] rt_sigprocmask(SIG_SETMASK, [], [pid 490] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 489] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 488] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 487] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 486] <... openat resumed>) = 5 [pid 485] <... mprotect resumed>) = 0 [pid 483] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 492] set_robust_list(0x7efd4eb6b9a0, 24 [pid 491] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 490] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 489] <... openat resumed>) = 4 [pid 488] <... openat resumed>) = 4 [pid 487] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 486] ioctl(5, LOOP_SET_FD, 3 [pid 485] rt_sigprocmask(SIG_BLOCK, ~[], [pid 483] <... futex resumed>) = 0 [pid 492] <... set_robust_list resumed>) = 0 [pid 491] creat("./bus", 000 [pid 490] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 489] ioctl(4, LOOP_SET_FD, 3 [pid 488] ioctl(4, LOOP_SET_FD, 3 [pid 487] <... mmap resumed>) = 0x7efd4eb6c000 [pid 486] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 485] <... rt_sigprocmask resumed>[], 8) = 0 [pid 483] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 492] rt_sigprocmask(SIG_SETMASK, [], [pid 491] <... creat resumed>) = 5 [pid 490] <... mount resumed>) = 0 [pid 489] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 488] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 487] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 486] ioctl(5, LOOP_CLR_FD [pid 485] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 492] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 491] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 490] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 489] ioctl(4, LOOP_CLR_FD [pid 488] ioctl(4, LOOP_CLR_FD [pid 487] <... mprotect resumed>) = 0 [pid 486] <... ioctl resumed>) = 0 [pid 492] creat("./bus", 000 [pid 491] <... futex resumed>) = 1 [pid 490] <... futex resumed>) = 1 [pid 489] <... ioctl resumed>) = 0 [pid 488] <... ioctl resumed>) = 0 [pid 487] rt_sigprocmask(SIG_BLOCK, ~[], [pid 485] <... clone3 resumed> => {parent_tid=[27]}, 88) = 27 [pid 483] <... futex resumed>) = 0 [pid 482] <... futex resumed>) = 0 [pid 492] <... creat resumed>) = 5 [pid 491] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 490] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 487] <... rt_sigprocmask resumed>[], 8) = 0 [pid 485] rt_sigprocmask(SIG_SETMASK, [], [pid 483] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 482] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 493 attached [pid 492] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 478] <... mount resumed>) = 0 [pid 493] set_robust_list(0x7efd4eb8c9a0, 24 [pid 478] openat(AT_FDCWD, 0x20000000, O_RDONLY|O_DIRECTORY [pid 493] <... set_robust_list resumed>) = 0 [pid 493] rt_sigprocmask(SIG_SETMASK, [], [pid 478] <... openat resumed>) = 6 [pid 493] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 493] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 478] chdir(0x20000000) = 0 [pid 478] ioctl(4, LOOP_CLR_FD) = 0 [pid 478] close(4) = 0 [pid 478] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 490] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 478] <... futex resumed>) = 0 [pid 487] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 485] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 483] <... futex resumed>) = 0 [pid 482] <... futex resumed>) = 0 [pid 478] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 467] close(3 [pid 483] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 482] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 467] <... close resumed>) = 0 [pid 491] mount("/dev/loop5", "./bus", NULL, MS_BIND, NULL [pid 490] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 487] <... clone3 resumed> => {parent_tid=[33]}, 88) = 33 [pid 486] ioctl(5, LOOP_SET_FD, 3 [pid 485] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 467] close(4 [pid 490] <... open resumed>) = 6 [pid 487] rt_sigprocmask(SIG_SETMASK, [], [pid 486] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 485] <... futex resumed>) = 1 [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 490] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 487] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 490] <... futex resumed>) = 1 [pid 487] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 485] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] <... mount resumed>) = 0 [pid 483] <... futex resumed>) = 0 [pid 486] close(5 [pid 467] close(5 [pid 490] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 487] <... futex resumed>) = 0 [pid 485] <... futex resumed>) = 0 [pid 483] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] <... close resumed>) = 0 [pid 491] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 490] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 487] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 486] close(3 [pid 485] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 483] <... futex resumed>) = 0 [pid 467] <... close resumed>) = 0 [pid 490] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 487] <... futex resumed>) = 0 [pid 482] <... futex resumed>) = 0 ./strace-static-x86_64: Process 494 attached [pid 493] <... futex resumed>) = 0 [pid 492] <... futex resumed>) = 1 [pid 491] <... futex resumed>) = 1 [pid 490] <... mmap resumed>) = 0x20000000 [pid 489] ioctl(4, LOOP_SET_FD, 3 [pid 488] ioctl(4, LOOP_SET_FD, 3 [pid 487] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 486] <... close resumed>) = 0 [pid 485] <... mmap resumed>) = 0x7efd4eb4b000 [pid 484] <... futex resumed>) = 0 [pid 483] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 482] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 467] close(6 [pid 494] set_robust_list(0x7efd4eb8c9a0, 24 [pid 493] memfd_create("syzkaller", 0 [pid 492] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 491] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 490] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 489] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 488] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 487] <... mmap resumed>) = 0x7efd4eb4b000 [pid 486] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 485] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 484] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 482] <... futex resumed>) = 0 [pid 467] <... close resumed>) = 0 [pid 494] <... set_robust_list resumed>) = 0 [pid 493] <... memfd_create resumed>) = 3 [pid 492] <... mount resumed>) = 0 [pid 491] <... open resumed>) = 6 [pid 490] <... futex resumed>) = 0 [pid 489] close(4 [pid 488] close(4 [pid 487] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 486] <... futex resumed>) = 0 [pid 485] <... mprotect resumed>) = 0 [pid 484] <... futex resumed>) = 0 [pid 483] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 482] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 467] close(7 [pid 494] rt_sigprocmask(SIG_SETMASK, [], [pid 493] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 492] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 490] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 489] <... close resumed>) = 0 [pid 488] <... close resumed>) = 0 [pid 487] <... mprotect resumed>) = 0 [pid 486] memfd_create("syzkaller", 0 [pid 485] rt_sigprocmask(SIG_BLOCK, ~[], [pid 484] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 483] <... futex resumed>) = 0 [pid 482] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 494] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 493] <... mmap resumed>) = 0x7efd4674b000 [pid 492] <... futex resumed>) = 0 [pid 491] <... futex resumed>) = 0 [ 22.967250][ T478] EXT4-fs (loop4): mounted filesystem without journal. Quota mode: writeback. [ 22.995770][ T478] ext4 filesystem being mounted at /root/file0 supports timestamps until 2038 (0x7fffffff) [pid 489] close(3 [pid 488] close(3 [pid 487] rt_sigprocmask(SIG_BLOCK, ~[], [pid 486] <... memfd_create resumed>) = 3 [pid 485] <... rt_sigprocmask resumed>[], 8) = 0 [pid 484] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 482] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 467] close(8 [pid 494] memfd_create("syzkaller", 0 [pid 493] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 492] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 491] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 489] <... close resumed>) = 0 [pid 488] <... close resumed>) = 0 [pid 487] <... rt_sigprocmask resumed>[], 8) = 0 [pid 486] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 485] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 484] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 482] <... futex resumed>) = 0 [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 494] <... memfd_create resumed>) = 3 [pid 493] <... write resumed>) = 262144 [pid 492] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 491] <... mmap resumed>) = 0x20000000 [pid 489] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 488] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 487] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 486] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 484] <... futex resumed>) = 0 [pid 482] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 467] close(9./strace-static-x86_64: Process 495 attached [pid 494] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 493] munmap(0x7efd4674b000, 262144 [pid 492] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 491] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 489] <... futex resumed>) = 0 [pid 488] <... futex resumed>) = 0 [pid 486] close(3 [pid 485] <... clone3 resumed> => {parent_tid=[28]}, 88) = 28 [pid 484] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 482] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 494] <... mmap resumed>) = 0x7efd4674b000 [pid 492] <... open resumed>) = 3 [pid 491] <... futex resumed>) = 0 [pid 489] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 488] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 487] <... clone3 resumed> => {parent_tid=[34]}, 88) = 34 [pid 486] <... close resumed>) = 0 [pid 485] rt_sigprocmask(SIG_SETMASK, [], [pid 493] <... munmap resumed>) = 0 [pid 492] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 491] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 488] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 487] rt_sigprocmask(SIG_SETMASK, [], [pid 486] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 482] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 467] close(10 [pid 495] set_robust_list(0x7efd4eb6b9a0, 24) = 0 [pid 495] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 495] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 496 attached [pid 485] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 488] memfd_create("syzkaller", 0 [pid 482] <... futex resumed>) = 0 [pid 485] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 467] close(11 [pid 486] <... futex resumed>) = 0 [pid 492] <... futex resumed>) = 1 [pid 484] <... futex resumed>) = 0 [pid 487] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 488] <... memfd_create resumed>) = 3 [pid 492] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 486] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 487] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 485] <... futex resumed>) = 1 [pid 493] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 484] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 489] <... futex resumed>) = 0 [pid 488] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 487] <... futex resumed>) = 0 [pid 485] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 484] <... futex resumed>) = 1 [pid 483] close(3 [pid 467] close(12 [pid 493] <... openat resumed>) = 4 [pid 489] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 3, 0 [pid 488] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 487] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 484] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 496] set_robust_list(0x7efd4eb6b9a0, 24 [pid 493] ioctl(4, LOOP_SET_FD, 3 [pid 489] <... mmap resumed>) = 0x20000000 [pid 488] close(3 [pid 483] close(4 [pid 467] close(13 [pid 489] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] <... close resumed>) = 0 [pid 488] <... close resumed>) = 0 [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 483] close(5 [pid 489] <... futex resumed>) = 1 [pid 484] <... futex resumed>) = 0 [pid 496] <... set_robust_list resumed>) = 0 [pid 496] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 496] creat("./bus", 000) = 4 [pid 496] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 496] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 487] <... futex resumed>) = 0 [pid 484] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 467] close(14 [pid 489] memfd_create("syzkaller", 0 [pid 488] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 487] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 489] <... memfd_create resumed>) = 4 [pid 484] <... futex resumed>) = 0 [pid 483] close(6 [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 488] <... futex resumed>) = 0 [pid 487] <... futex resumed>) = 1 [pid 496] <... futex resumed>) = 0 [pid 489] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 488] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 487] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 496] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 483] <... close resumed>) = 0 [pid 467] close(15 [pid 489] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 483] close(7 [pid 496] <... mount resumed>) = 0 [pid 496] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 489] close(4 [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 496] <... futex resumed>) = 1 [pid 489] <... close resumed>) = 0 [pid 487] <... futex resumed>) = 0 [pid 483] close(8 [pid 482] close(3 [pid 467] close(16 [pid 496] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 494] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 489] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 487] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 482] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 496] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 489] <... futex resumed>) = 0 [pid 482] close(4 [pid 483] close(9 [pid 484] close(3 [pid 467] close(17 [pid 487] <... futex resumed>) = 0 [pid 489] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 496] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 487] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 484] <... close resumed>) = 0 [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 482] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 496] <... open resumed>) = 5 [pid 484] close(4 [pid 483] close(10 [pid 482] close(5 [pid 467] close(18 [pid 496] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 484] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 482] <... close resumed>) = 0 [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 496] <... futex resumed>) = 1 [pid 487] <... futex resumed>) = 0 [pid 484] close(5 [pid 483] close(11 [pid 482] close(6 [pid 467] close(19 [pid 496] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 487] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 484] <... close resumed>) = 0 [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 482] <... close resumed>) = 0 [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 496] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 487] <... futex resumed>) = 0 [pid 484] close(6 [pid 483] close(12 [pid 482] close(7 [pid 467] close(20 [pid 496] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 5, 0 [pid 487] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 484] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 482] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 496] <... mmap resumed>) = 0x20000000 [pid 495] <... futex resumed>) = 0 [pid 494] <... write resumed>) = 262144 [pid 493] <... ioctl resumed>) = 0 [pid 484] close(7 [pid 483] close(13 [pid 482] close(8 [pid 467] close(21 [pid 496] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 495] creat("./bus", 000 [pid 494] munmap(0x7efd4674b000, 262144 [pid 493] close(3 [pid 484] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 482] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 496] <... futex resumed>) = 1 [pid 495] <... creat resumed>) = 5 [pid 494] <... munmap resumed>) = 0 [pid 493] <... close resumed>) = 0 [pid 487] <... futex resumed>) = 0 [pid 484] close(8 [pid 483] close(14 [pid 482] close(9 [pid 467] close(22 [pid 496] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 495] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 494] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 493] mkdir("./file0", 0777 [pid 487] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 484] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 482] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 496] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 495] <... futex resumed>) = 1 [pid 494] <... openat resumed>) = 6 [pid 493] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 487] <... futex resumed>) = 0 [pid 485] <... futex resumed>) = 0 [pid 484] close(9 [pid 483] close(15 [pid 482] close(10 [pid 467] close(23 [pid 496] memfd_create("syzkaller", 0 [pid 495] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 494] ioctl(6, LOOP_SET_FD, 3 [pid 493] mount("/dev/loop1", "./file0", "ext4", MS_SYNCHRONOUS|MS_NODIRATIME|MS_RELATIME, "nodiscard,barrier,nouid32,grpquota,,errors=continue" [pid 485] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 484] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 482] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 496] <... memfd_create resumed>) = 7 [pid 495] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 494] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 485] <... futex resumed>) = 0 [pid 484] close(10 [pid 483] close(16 [pid 482] close(11 [pid 467] close(24 [pid 496] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 495] mount("/dev/loop1", "./bus", NULL, MS_BIND, NULL [pid 494] ioctl(6, LOOP_CLR_FD [pid 485] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 484] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 482] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 496] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 495] <... mount resumed>) = 0 [pid 494] <... ioctl resumed>) = 0 [pid 484] close(11 [pid 483] close(17 [pid 482] close(12 [pid 467] close(25 [pid 496] close(7 [pid 495] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 484] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 482] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 496] <... close resumed>) = 0 [pid 495] <... futex resumed>) = 1 [pid 485] <... futex resumed>) = 0 [pid 484] close(12 [pid 483] close(18 [pid 482] close(13 [pid 467] close(26 [pid 496] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 495] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 485] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 484] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 482] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 496] <... futex resumed>) = 0 [pid 495] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 485] <... futex resumed>) = 0 [pid 484] close(13 [pid 483] close(19 [pid 482] close(14 [pid 467] close(27 [pid 496] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 495] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 494] ioctl(6, LOOP_SET_FD, 3 [pid 485] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 484] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 482] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 495] <... open resumed>) = 3 [pid 494] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 484] close(14 [pid 483] close(20 [pid 482] close(15 [pid 467] close(28 [pid 495] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 494] close(6 [pid 484] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 482] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 495] <... futex resumed>) = 1 [pid 485] <... futex resumed>) = 0 [pid 495] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 3, 0 [pid 494] <... close resumed>) = 0 [pid 485] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 484] close(15 [pid 483] close(21 [pid 482] close(16 [pid 467] close(29 [pid 495] <... mmap resumed>) = 0x20000000 [pid 494] close(3 [pid 485] <... futex resumed>) = 0 [pid 484] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 482] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 467] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 495] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 494] <... close resumed>) = 0 [pid 483] close(22 [pid 495] <... futex resumed>) = 0 [pid 485] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 484] close(16 [pid 482] close(17 [pid 467] exit_group(0 [pid 485] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 482] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 484] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 467] <... exit_group resumed>) = ? [pid 478] <... futex resumed>) = ? [pid 495] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 494] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 485] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 479] <... futex resumed>) = ? [pid 495] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 494] <... futex resumed>) = 0 [pid 485] <... futex resumed>) = 0 [pid 484] close(17 [pid 483] close(23 [pid 482] close(18 [pid 478] +++ exited with 0 +++ [pid 479] +++ exited with 0 +++ [pid 467] +++ exited with 0 +++ [pid 494] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 484] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 482] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 495] memfd_create("syzkaller", 0 [pid 484] close(18 [pid 483] close(24 [pid 482] close(19 [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=20, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- [pid 495] <... memfd_create resumed>) = 6 [pid 495] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1 ENOMEM (Cannot allocate memory) [pid 495] close(6) = 0 [pid 495] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 495] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 487] close(3) = -1 EBADF (Bad file descriptor) [pid 487] close(4) = 0 [pid 487] close(5) = 0 [pid 487] close(6) = -1 EBADF (Bad file descriptor) [pid 487] close(7) = -1 EBADF (Bad file descriptor) [pid 487] close(8) = -1 EBADF (Bad file descriptor) [pid 487] close(9) = -1 EBADF (Bad file descriptor) [pid 487] close(10) = -1 EBADF (Bad file descriptor) [pid 487] close(11) = -1 EBADF (Bad file descriptor) [pid 487] close(12) = -1 EBADF (Bad file descriptor) [pid 487] close(13) = -1 EBADF (Bad file descriptor) [pid 487] close(14) = -1 EBADF (Bad file descriptor) [pid 487] close(15) = -1 EBADF (Bad file descriptor) [pid 487] close(16) = -1 EBADF (Bad file descriptor) [pid 487] close(17) = -1 EBADF (Bad file descriptor) [pid 487] close(18) = -1 EBADF (Bad file descriptor) [pid 487] close(19) = -1 EBADF (Bad file descriptor) [pid 487] close(20) = -1 EBADF (Bad file descriptor) [pid 487] close(21) = -1 EBADF (Bad file descriptor) [pid 487] close(22) = -1 EBADF (Bad file descriptor) [pid 487] close(23) = -1 EBADF (Bad file descriptor) [pid 487] close(24) = -1 EBADF (Bad file descriptor) [pid 487] close(25) = -1 EBADF (Bad file descriptor) [pid 484] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 482] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 304] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 484] close(19 [pid 483] close(25 [pid 482] close(20 [pid 484] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 482] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 304] <... openat resumed>) = 3 [pid 484] close(20 [pid 483] close(26 [pid 482] close(21 [pid 304] ioctl(3, LOOP_CLR_FD [pid 484] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 482] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 304] <... ioctl resumed>) = 0 [pid 484] close(21 [pid 483] close(27 [pid 482] close(22 [pid 304] close(3 [pid 484] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 483] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 487] close(26) = -1 EBADF (Bad file descriptor) [pid 487] close(27) = -1 EBADF (Bad file descriptor) [pid 487] close(28) = -1 EBADF (Bad file descriptor) [pid 487] close(29) = -1 EBADF (Bad file descriptor) [pid 487] exit_group(0) = ? [pid 482] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 482] close(23) = -1 EBADF (Bad file descriptor) [pid 482] close(24) = -1 EBADF (Bad file descriptor) [pid 482] close(25) = -1 EBADF (Bad file descriptor) [pid 482] close(26) = -1 EBADF (Bad file descriptor) [pid 482] close(27) = -1 EBADF (Bad file descriptor) [pid 482] close(28) = -1 EBADF (Bad file descriptor) [ 23.059898][ T493] loop1: detected capacity change from 0 to 512 [ 23.092031][ T493] ------------[ cut here ]------------ [ 23.097468][ T493] kernel BUG at fs/ext4/super.c:6918! [pid 482] close(29) = -1 EBADF (Bad file descriptor) [pid 482] exit_group(0) = ? [pid 304] <... close resumed>) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557294750) = 23 [pid 484] close(22) = -1 EBADF (Bad file descriptor) [pid 484] close(23) = -1 EBADF (Bad file descriptor) [pid 484] close(24) = -1 EBADF (Bad file descriptor) [pid 484] close(25) = -1 EBADF (Bad file descriptor) [pid 484] close(26) = -1 EBADF (Bad file descriptor) [pid 484] close(27) = -1 EBADF (Bad file descriptor) [pid 484] close(28) = -1 EBADF (Bad file descriptor) [pid 484] close(29) = -1 EBADF (Bad file descriptor) [pid 484] exit_group(0) = ? [pid 483] close(28) = -1 EBADF (Bad file descriptor) [pid 483] close(29) = -1 EBADF (Bad file descriptor) [pid 483] exit_group(0) = ? [pid 494] <... futex resumed>) = ? [pid 494] +++ exited with 0 +++ [pid 496] <... futex resumed>) = ? [pid 496] +++ exited with 0 +++ [pid 487] +++ exited with 0 +++ [pid 302] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=32, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 302] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 302] ioctl(3, LOOP_CLR_FD) = 0 [pid 302] close(3) = 0 [pid 302] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557294750) = 35 [pid 488] <... futex resumed>) = ? [pid 488] +++ exited with 0 +++ [pid 491] <... futex resumed>) = ? [pid 491] +++ exited with 0 +++ [pid 482] +++ exited with 0 +++ ./strace-static-x86_64: Process 499 attached [pid 499] set_robust_list(0x555557294760, 24) = 0 [pid 499] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 499] setpgid(0, 0) = 0 [pid 499] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 499] write(3, "1000", 4) = 4 [pid 499] close(3) = 0 [pid 499] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 499] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, NULL, 8) = 0 [ 23.106940][ T493] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 23.112848][ T493] CPU: 1 PID: 493 Comm: syz-executor326 Not tainted 6.1.25-syzkaller-00052-gc2611a04b92f #0 [ 23.122739][ T493] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 [ 23.132635][ T493] RIP: 0010:ext4_enable_quotas+0x96a/0x980 [ 23.138276][ T493] Code: ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 4f f9 ff ff 49 89 d7 48 89 df e8 93 a8 bb ff 4c 89 fa e9 3c f9 ff ff e8 06 59 75 ff <0f> 0b e8 ff 58 75 ff 0f 0b e8 b8 78 f4 02 0f 1f 84 00 00 00 00 00 [ 23.157718][ T493] RSP: 0018:ffffc900014377c0 EFLAGS: 00010293 [ 23.163790][ T493] RAX: ffffffff81ff958a RBX: 0000000000000000 RCX: ffff888115729440 [ 23.171602][ T493] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 23.179415][ T493] RBP: ffffc90001437930 R08: ffffffff81ff9087 R09: ffffed102170dc83 [ 23.187227][ T493] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 [ 23.195039][ T493] R13: 0000000000000004 R14: dffffc0000000000 R15: ffff88812317f464 [ 23.202851][ T493] FS: 00007efd4eb8c6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 23.211617][ T493] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.218038][ T493] CR2: 00007ffc3690dff8 CR3: 0000000113b49000 CR4: 00000000003506a0 [ 23.225853][ T493] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.233661][ T493] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.241470][ T493] Call Trace: [ 23.244599][ T493] [ 23.247375][ T493] ? ext4_force_commit+0xc0/0xc0 [ 23.252147][ T493] ? ext4_orphan_file_block_trigger+0x580/0x580 [ 23.258218][ T493] ? __kasan_kmalloc+0x9c/0xb0 [ 23.262909][ T493] ? kmalloc_trace+0x44/0xa0 [ 23.267340][ T493] ? ext4_register_sysfs+0x281/0x2c0 [ 23.272457][ T493] ext4_fill_super+0x7b1f/0x8450 [ 23.277239][ T493] ? ext4_parse_test_dummy_encryption+0xb0/0xb0 [ 23.283306][ T493] ? snprintf+0xd6/0x120 [ 23.287390][ T493] ? set_blocksize+0x1cb/0x360 [ 23.291987][ T493] ? sb_set_blocksize+0xa8/0xf0 [ 23.296673][ T493] get_tree_bdev+0x440/0x680 [ 23.301099][ T493] ? ext4_parse_test_dummy_encryption+0xb0/0xb0 [ 23.307174][ T493] ext4_get_tree+0x1c/0x20 [ 23.311432][ T493] vfs_get_tree+0x88/0x290 [ 23.315680][ T493] do_new_mount+0x28b/0xac0 [ 23.320019][ T493] ? do_move_mount_old+0x160/0x160 [ 23.324965][ T493] ? security_capable+0x87/0xb0 [ 23.329652][ T493] ? ns_capable+0x89/0xe0 [ 23.333817][ T493] path_mount+0x671/0x1070 [ 23.338071][ T493] ? user_path_at_empty+0x14e/0x1a0 [ 23.343112][ T493] __se_sys_mount+0x2c4/0x3b0 [ 23.347620][ T493] ? __x64_sys_mount+0xd0/0xd0 [ 23.352217][ T493] ? fpregs_restore_userregs+0x130/0x290 [ 23.357690][ T493] __x64_sys_mount+0xbf/0xd0 [ 23.362111][ T493] do_syscall_64+0x3d/0xb0 [ 23.366362][ T493] entry_SYSCALL_64_after_hwframe+0x63/0xcd [ 23.372094][ T493] RIP: 0033:0x7efd4ebd95aa [ 23.376374][ T493] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 6e 07 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 [ 23.395791][ T493] RSP: 002b:00007efd4eb8bf88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 [pid 499] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 499] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb6c000 [pid 499] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 499] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 499] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} => {parent_tid=[24]}, 88) = 24 [pid 499] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 499] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 499] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 499] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb4b000 [pid 499] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 499] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 499] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} => {parent_tid=[25]}, 88) = 25 [pid 499] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 499] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 499] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 501 attached [pid 501] set_robust_list(0x7efd4eb8c9a0, 24) = 0 [pid 501] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 501] memfd_create("syzkaller", 0) = 3 [pid 501] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7efd4674b000 [pid 501] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 501] munmap(0x7efd4674b000, 262144) = 0 [pid 501] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 501] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 501] ioctl(4, LOOP_CLR_FD) = 0 [pid 501] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 501] close(4) = 0 [pid 501] close(3) = 0 [pid 501] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 501] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 489] <... futex resumed>) = ? [pid 489] +++ exited with 0 +++ [pid 492] <... futex resumed>) = ? [pid 492] +++ exited with 0 +++ [pid 484] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=29, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557294750) = 32 [pid 486] <... futex resumed>) = ? [pid 486] +++ exited with 0 +++ [pid 490] <... futex resumed>) = ? [pid 490] +++ exited with 0 +++ [pid 483] +++ exited with 0 +++ [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=23, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 303] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 303] ioctl(3, LOOP_CLR_FD) = 0 [pid 303] close(3) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557294750) = 26 [pid 499] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 499] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] <... futex resumed>) = 0 [pid 499] <... futex resumed>) = 1 [pid 501] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 499] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 501] <... mount resumed>) = 0 [pid 501] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 499] <... futex resumed>) = 0 [pid 501] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 499] <... futex resumed>) = 0 [pid 501] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 499] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 501] <... open resumed>) = 3 [pid 501] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 499] <... futex resumed>) = 0 [pid 501] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 499] <... futex resumed>) = 0 [pid 501] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 3, 0 [pid 499] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 501] <... mmap resumed>) = 0x20000000 [pid 501] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 499] <... futex resumed>) = 0 [pid 501] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 499] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 501] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 499] <... futex resumed>) = 0 [pid 501] memfd_create("syzkaller", 0) = 4 [pid 501] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = -1 ENOMEM (Cannot allocate memory) [pid 501] close(4) = 0 [pid 501] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 501] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 500 attached [pid 500] set_robust_list(0x555557294760, 24) = 0 [pid 500] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 500] setpgid(0, 0) = 0 [pid 500] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 500] write(3, "1000", 4) = 4 [pid 500] close(3) = 0 [pid 500] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 500] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, NULL, 8) = 0 [pid 500] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 500] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb6c000 [pid 500] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 500] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 500] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} => {parent_tid=[36]}, 88) = 36 [pid 500] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 500] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 500] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 500] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb4b000 [pid 500] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 500] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 500] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} => {parent_tid=[37]}, 88) = 37 [pid 500] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 500] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 500] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 505 attached [pid 505] set_robust_list(0x7efd4eb8c9a0, 24) = 0 [pid 505] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 505] memfd_create("syzkaller", 0) = 3 [pid 505] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7efd4674b000 [pid 505] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 505] munmap(0x7efd4674b000, 262144) = 0 [pid 505] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 505] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 505] ioctl(4, LOOP_CLR_FD) = 0 [pid 301] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=27, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 301] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 301] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 301] ioctl(3, LOOP_CLR_FD) = 0 [pid 301] close(3) = 0 [pid 301] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557294750) = 30 [pid 505] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 505] close(4) = 0 [pid 505] close(3) = 0 [pid 505] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 505] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 502 attached [pid 502] set_robust_list(0x7efd4eb6b9a0, 24) = 0 [pid 502] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 502] creat(0x20000100, 000) = 4 [pid 502] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 502] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 503 attached [pid 503] set_robust_list(0x555557294760, 24 [pid 499] close(3) = 0 [pid 499] close(4) = 0 [pid 499] close(5) = -1 EBADF (Bad file descriptor) [pid 499] close(6) = -1 EBADF (Bad file descriptor) [pid 499] close(7) = -1 EBADF (Bad file descriptor) [pid 499] close(8) = -1 EBADF (Bad file descriptor) [pid 499] close(9) = -1 EBADF (Bad file descriptor) [pid 499] close(10) = -1 EBADF (Bad file descriptor) [pid 499] close(11) = -1 EBADF (Bad file descriptor) [pid 499] close(12) = -1 EBADF (Bad file descriptor) [pid 499] close(13) = -1 EBADF (Bad file descriptor) [pid 500] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 500] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=0} [pid 499] close(14 [pid 500] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 499] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 500] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] close(15 [pid 505] <... futex resumed>) = 0 [pid 500] <... futex resumed>) = 1 [pid 499] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 505] mount("/dev/loop3", "./bus", NULL, MS_BIND, NULL [pid 500] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 499] close(16 [pid 505] <... mount resumed>) = 0 [pid 499] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 505] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] close(17 [pid 505] <... futex resumed>) = 1 [pid 500] <... futex resumed>) = 0 [pid 499] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 505] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 500] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] close(18 [pid 505] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 500] <... futex resumed>) = 0 [pid 499] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 505] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 500] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 499] close(19 [pid 505] <... open resumed>) = 3 [pid 499] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 505] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] close(20 [pid 505] <... futex resumed>) = 1 [pid 500] <... futex resumed>) = 0 [pid 499] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 505] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 500] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] close(21 [pid 505] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 500] <... futex resumed>) = 0 [pid 499] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 505] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 3, 0 [pid 500] futex(0x7efd4ec586cc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 499] close(22 [pid 505] <... mmap resumed>) = 0x20000000 [pid 503] <... set_robust_list resumed>) = 0 [pid 499] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 505] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 503] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 499] close(23 [pid 505] <... futex resumed>) = 1 [pid 503] <... prctl resumed>) = 0 [pid 500] <... futex resumed>) = 0 [pid 499] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 505] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 503] setpgid(0, 0 [pid 500] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] close(24 [pid 505] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 503] <... setpgid resumed>) = 0 [pid 500] <... futex resumed>) = 0 [pid 499] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 505] memfd_create("syzkaller", 0 [pid 503] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 499] close(25 [pid 505] <... memfd_create resumed>) = 4 [pid 503] <... openat resumed>) = 3 [pid 499] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 505] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 503] write(3, "1000", 4 [pid 499] close(26 [pid 505] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 503] <... write resumed>) = 4 [pid 499] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 505] close(4 [pid 503] close(3 [pid 499] close(27 [pid 505] <... close resumed>) = 0 [pid 503] <... close resumed>) = 0 [pid 499] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 505] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 503] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 499] close(28 [pid 505] <... futex resumed>) = 0 [pid 503] <... futex resumed>) = 0 [pid 499] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 505] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 503] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 499] close(29 [pid 503] <... rt_sigaction resumed>NULL, 8) = 0 [pid 499] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 503] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 499] exit_group(0 [pid 503] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 502] <... futex resumed>) = ? [pid 501] <... futex resumed>) = ? [pid 499] <... exit_group resumed>) = ? [pid 503] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 502] +++ exited with 0 +++ [pid 501] +++ exited with 0 +++ [pid 499] +++ exited with 0 +++ [pid 503] <... mmap resumed>) = 0x7efd4eb6c000 [pid 503] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=23, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 503] <... mprotect resumed>) = 0 [pid 304] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 503] rt_sigprocmask(SIG_BLOCK, ~[], [pid 304] <... openat resumed>) = 3 [pid 503] <... rt_sigprocmask resumed>[], 8) = 0 [pid 304] ioctl(3, LOOP_CLR_FD [pid 503] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 304] <... ioctl resumed>) = 0 [pid 304] close(3 [pid 503] <... clone3 resumed> => {parent_tid=[33]}, 88) = 33 [pid 304] <... close resumed>) = 0 [pid 503] rt_sigprocmask(SIG_SETMASK, [], [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 503] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 503] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 304] <... clone resumed>, child_tidptr=0x555557294750) = 26 [pid 503] <... futex resumed>) = 0 [pid 503] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 503] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb4b000 [pid 503] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 503] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 503] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} => {parent_tid=[34]}, 88) = 34 [pid 503] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 503] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 503] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 509 attached [pid 509] set_robust_list(0x555557294760, 24) = 0 ./strace-static-x86_64: Process 510 attached [pid 510] set_robust_list(0x7efd4eb6b9a0, 24 [pid 509] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 510] <... set_robust_list resumed>) = 0 [pid 510] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 510] creat("./bus", 000 [pid 509] <... prctl resumed>) = 0 [pid 509] setpgid(0, 0 [pid 510] <... creat resumed>) = 3 [pid 509] <... setpgid resumed>) = 0 [pid 509] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 510] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] <... openat resumed>) = 3 [pid 510] <... futex resumed>) = 1 [pid 503] <... futex resumed>) = 0 [pid 510] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 509] write(3, "1000", 4 [pid 503] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 510] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 509] <... write resumed>) = 4 [pid 503] <... futex resumed>) = 0 [pid 510] mount("/dev/loop2", "./bus", NULL, MS_BIND, NULL [pid 509] close(3 [pid 503] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 510] <... mount resumed>) = 0 [pid 509] <... close resumed>) = 0 [pid 510] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 510] <... futex resumed>) = 1 [pid 509] <... futex resumed>) = 0 [pid 503] <... futex resumed>) = 0 [pid 510] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 509] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 503] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 510] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 509] <... rt_sigaction resumed>NULL, 8) = 0 [pid 503] <... futex resumed>) = 0 [pid 510] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 509] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 503] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 510] <... open resumed>) = 4 [pid 509] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 510] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 510] <... futex resumed>) = 1 [pid 509] <... mmap resumed>) = 0x7efd4eb6c000 [pid 503] <... futex resumed>) = 0 [pid 510] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 509] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 503] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 510] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 509] <... mprotect resumed>) = 0 [pid 503] <... futex resumed>) = 0 [pid 510] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 4, 0 [pid 509] rt_sigprocmask(SIG_BLOCK, ~[], [pid 503] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 510] <... mmap resumed>) = 0x20000000 [pid 509] <... rt_sigprocmask resumed>[], 8) = 0 [pid 510] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 510] <... futex resumed>) = 1 [pid 503] <... futex resumed>) = 0 [pid 510] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 509] <... clone3 resumed> => {parent_tid=[27]}, 88) = 27 [pid 503] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 510] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 509] rt_sigprocmask(SIG_SETMASK, [], [pid 503] <... futex resumed>) = 0 [pid 510] memfd_create("syzkaller", 0 [pid 509] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 510] <... memfd_create resumed>) = 5 [pid 509] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 510] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 509] <... futex resumed>) = 0 [pid 510] <... mmap resumed>) = 0x7efd4674b000 [pid 509] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 510] write(5, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 65536 [pid 509] <... futex resumed>) = 0 [pid 510] <... write resumed>) = 65536 [pid 509] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 510] munmap(0x7efd4674b000, 65536 [pid 509] <... mmap resumed>) = 0x7efd4eb4b000 [pid 510] <... munmap resumed>) = 0 [pid 509] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 510] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 509] <... mprotect resumed>) = 0 [pid 510] <... openat resumed>) = 6 [pid 509] rt_sigprocmask(SIG_BLOCK, ~[], [pid 510] ioctl(6, LOOP_SET_FD, 5 [pid 509] <... rt_sigprocmask resumed>[], 8) = 0 [pid 510] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 509] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} [pid 510] ioctl(6, LOOP_CLR_FD) = 0 [pid 509] <... clone3 resumed> => {parent_tid=[28]}, 88) = 28 [pid 509] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 509] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 509] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 511 attached [pid 510] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 510] close(6) = 0 [pid 510] close(5) = 0 [pid 511] set_robust_list(0x7efd4eb8c9a0, 24 [pid 510] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] <... set_robust_list resumed>) = 0 [pid 510] <... futex resumed>) = 0 [pid 511] rt_sigprocmask(SIG_SETMASK, [], [pid 510] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 511] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 511] memfd_create("syzkaller", 0) = 3 [pid 511] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7efd4674b000 [pid 511] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 512 attached [pid 512] set_robust_list(0x7efd4eb6b9a0, 24) = 0 [pid 512] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 512] creat("./bus", 000) = 4 [pid 512] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] <... write resumed>) = 262144 [pid 512] <... futex resumed>) = 1 [pid 509] <... futex resumed>) = 0 [pid 512] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 509] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 512] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 509] <... futex resumed>) = 0 [pid 512] mount("/dev/loop4", "./bus", NULL, MS_BIND, NULL [pid 509] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 512] <... mount resumed>) = 0 [pid 512] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] munmap(0x7efd4674b000, 262144 [pid 512] <... futex resumed>) = 1 [pid 511] <... munmap resumed>) = 0 [pid 509] <... futex resumed>) = 0 [pid 512] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 511] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 509] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 512] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 511] <... openat resumed>) = 5 [pid 509] <... futex resumed>) = 0 [pid 512] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 511] ioctl(5, LOOP_SET_FD, 3 [pid 509] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 512] <... open resumed>) = 6 [pid 511] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 512] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 511] ioctl(5, LOOP_CLR_FD [pid 512] <... futex resumed>) = 1 [pid 509] <... futex resumed>) = 0 [pid 512] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 511] <... ioctl resumed>) = 0 [pid 509] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 512] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 509] <... futex resumed>) = 0 [pid 512] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 509] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 512] <... mmap resumed>) = 0x20000000 [pid 512] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 511] ioctl(5, LOOP_SET_FD, 3 [pid 509] <... futex resumed>) = 0 [pid 512] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 511] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 509] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 512] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 511] close(5 [pid 509] <... futex resumed>) = 0 [pid 512] memfd_create("syzkaller", 0 [pid 511] <... close resumed>) = 0 [pid 512] <... memfd_create resumed>) = 5 [pid 511] close(3 [pid 512] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 511] <... close resumed>) = 0 [pid 512] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 511] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 512] close(5 [pid 511] <... futex resumed>) = 0 [pid 512] <... close resumed>) = 0 [pid 511] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 512] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 512] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 509] close(3) = -1 EBADF (Bad file descriptor) [pid 509] close(4) = 0 [pid 509] close(5) = -1 EBADF (Bad file descriptor) [pid 509] close(6) = 0 [pid 509] close(7) = -1 EBADF (Bad file descriptor) [pid 509] close(8) = -1 EBADF (Bad file descriptor) [pid 509] close(9) = -1 EBADF (Bad file descriptor) [pid 509] close(10) = -1 EBADF (Bad file descriptor) ./strace-static-x86_64: Process 504 attached [pid 509] close(11) = -1 EBADF (Bad file descriptor) [pid 509] close(12 [pid 504] set_robust_list(0x555557294760, 24 [pid 509] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 509] close(13 [pid 504] <... set_robust_list resumed>) = 0 [pid 509] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 504] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 509] close(14 [pid 504] <... prctl resumed>) = 0 [pid 509] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 504] setpgid(0, 0 [pid 509] close(15 [pid 504] <... setpgid resumed>) = 0 [pid 509] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 504] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 509] close(16 [pid 504] <... openat resumed>) = 3 [pid 509] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 504] write(3, "1000", 4 [pid 509] close(17) = -1 EBADF (Bad file descriptor) [pid 504] <... write resumed>) = 4 [pid 509] close(18 [pid 504] close(3 [pid 509] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 504] <... close resumed>) = 0 [pid 509] close(19 [pid 504] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 504] <... futex resumed>) = 0 [pid 509] close(20) = -1 EBADF (Bad file descriptor) [pid 504] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 509] close(21) = -1 EBADF (Bad file descriptor) [pid 504] <... rt_sigaction resumed>NULL, 8) = 0 [pid 509] close(22 [pid 504] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], [pid 509] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 504] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 509] close(23 [pid 504] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 509] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 504] <... mmap resumed>) = 0x7efd4eb6c000 [pid 509] close(24 [pid 504] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE [pid 509] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 504] <... mprotect resumed>) = 0 [pid 509] close(25 [pid 504] rt_sigprocmask(SIG_BLOCK, ~[], [pid 509] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 504] <... rt_sigprocmask resumed>[], 8) = 0 [pid 509] close(26 [pid 504] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 509] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 509] close(27 [pid 504] <... clone3 resumed> => {parent_tid=[27]}, 88) = 27 [pid 509] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 504] rt_sigprocmask(SIG_SETMASK, [], [pid 509] close(28 [pid 504] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 509] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 504] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] close(29 [pid 504] <... futex resumed>) = 0 [pid 509] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 504] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 509] exit_group(0 [pid 504] <... futex resumed>) = 0 [pid 512] <... futex resumed>) = ? [pid 511] <... futex resumed>) = ? [pid 509] <... exit_group resumed>) = ? [pid 504] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 512] +++ exited with 0 +++ [pid 511] +++ exited with 0 +++ [pid 509] +++ exited with 0 +++ [pid 504] <... mmap resumed>) = 0x7efd4eb4b000 [pid 504] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE [pid 304] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 504] <... mprotect resumed>) = 0 [pid 504] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 504] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} => {parent_tid=[28]}, 88) = 28 [pid 504] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 504] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 504] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 304] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 304] ioctl(3, LOOP_CLR_FD) = 0 [pid 304] close(3) = 0 [pid 304] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557294750) = 29 ./strace-static-x86_64: Process 513 attached [pid 513] set_robust_list(0x7efd4eb8c9a0, 24) = 0 [pid 513] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 513] memfd_create("syzkaller", 0) = 3 [pid 513] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7efd4674b000 [pid 513] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 514 attached [pid 514] set_robust_list(0x7efd4eb6b9a0, 24) = 0 [pid 514] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 514] creat("./bus", 000) = 4 [pid 514] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 504] <... futex resumed>) = 0 [pid 514] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 504] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 514] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 504] <... futex resumed>) = 0 [pid 514] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 513] <... write resumed>) = 262144 [pid 504] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 514] <... mount resumed>) = 0 [pid 513] munmap(0x7efd4674b000, 262144 [pid 514] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 513] <... munmap resumed>) = 0 [pid 514] <... futex resumed>) = 1 [pid 513] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 504] <... futex resumed>) = 0 [pid 514] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 513] <... openat resumed>) = 5 [pid 504] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 514] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 513] ioctl(5, LOOP_SET_FD, 3 [pid 504] <... futex resumed>) = 0 [pid 514] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 513] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 504] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 514] <... open resumed>) = 6 [pid 513] ioctl(5, LOOP_CLR_FD [pid 514] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 513] <... ioctl resumed>) = 0 [pid 514] <... futex resumed>) = 1 [pid 504] <... futex resumed>) = 0 [pid 514] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 504] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 514] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 504] <... futex resumed>) = 0 [pid 514] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 504] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 514] <... mmap resumed>) = 0x20000000 [pid 514] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 513] ioctl(5, LOOP_SET_FD, 3 [pid 514] <... futex resumed>) = 1 [pid 513] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 504] <... futex resumed>) = 0 [pid 514] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 513] close(5 [pid 504] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 514] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 513] <... close resumed>) = 0 [pid 504] <... futex resumed>) = 0 [pid 514] memfd_create("syzkaller", 0 [pid 513] close(3 [pid 514] <... memfd_create resumed>) = 5 [pid 513] <... close resumed>) = 0 [pid 514] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 513] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 514] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 513] <... futex resumed>) = 0 [pid 514] close(5 [pid 513] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 514] <... close resumed>) = 0 [pid 514] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 ./strace-static-x86_64: Process 515 attached ./strace-static-x86_64: Process 508 attached ./strace-static-x86_64: Process 507 attached ./strace-static-x86_64: Process 506 attached [pid 514] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 504] close(3) = -1 EBADF (Bad file descriptor) [ 23.404036][ T493] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007efd4ebd95aa [ 23.411847][ T493] RDX: 00000000200005c0 RSI: 0000000020000000 RDI: 00007efd4eb8bfe0 [ 23.419656][ T493] RBP: 00000000200005c0 R08: 00007efd4eb8c020 R09: 00000000000004d4 [ 23.427479][ T493] R10: 0000000000200810 R11: 0000000000000202 R12: 00007efd4eb8bfe0 [ 23.435377][ T493] R13: 0000000020000000 R14: 00000000000004da R15: 00007efd4eb8c020 [ 23.443194][ T493] [ 23.446060][ T493] Modules linked in: [ 23.452851][ T493] ---[ end trace 0000000000000000 ]--- [pid 504] close(4 [pid 515] set_robust_list(0x555557294760, 24 [pid 508] set_robust_list(0x7efd4eb8c9a0, 24 [pid 507] set_robust_list(0x555557294760, 24 [pid 506] set_robust_list(0x7efd4eb6b9a0, 24 [pid 504] <... close resumed>) = 0 [pid 515] <... set_robust_list resumed>) = 0 [pid 508] <... set_robust_list resumed>) = 0 [pid 507] <... set_robust_list resumed>) = 0 [pid 506] <... set_robust_list resumed>) = 0 [pid 504] close(5) = -1 EBADF (Bad file descriptor) [pid 504] close(6) = 0 [pid 504] close(7) = -1 EBADF (Bad file descriptor) [pid 504] close(8) = -1 EBADF (Bad file descriptor) [pid 504] close(9) = -1 EBADF (Bad file descriptor) [pid 504] close(10) = -1 EBADF (Bad file descriptor) [pid 504] close(11) = -1 EBADF (Bad file descriptor) [pid 504] close(12) = -1 EBADF (Bad file descriptor) [pid 504] close(13) = -1 EBADF (Bad file descriptor) [pid 504] close(14) = -1 EBADF (Bad file descriptor) [pid 504] close(15) = -1 EBADF (Bad file descriptor) [pid 504] close(16) = -1 EBADF (Bad file descriptor) [pid 504] close(17) = -1 EBADF (Bad file descriptor) [pid 504] close(18) = -1 EBADF (Bad file descriptor) [pid 504] close(19) = -1 EBADF (Bad file descriptor) [pid 504] close(20) = -1 EBADF (Bad file descriptor) [pid 504] close(21) = -1 EBADF (Bad file descriptor) [pid 504] close(22) = -1 EBADF (Bad file descriptor) [pid 504] close(23) = -1 EBADF (Bad file descriptor) [pid 504] close(24) = -1 EBADF (Bad file descriptor) [pid 504] close(25) = -1 EBADF (Bad file descriptor) [pid 504] close(26) = -1 EBADF (Bad file descriptor) [pid 504] close(27) = -1 EBADF (Bad file descriptor) [pid 504] close(28) = -1 EBADF (Bad file descriptor) [pid 504] close(29) = -1 EBADF (Bad file descriptor) [pid 504] exit_group(0 [pid 514] <... futex resumed>) = ? [pid 513] <... futex resumed>) = ? [pid 504] <... exit_group resumed>) = ? [pid 514] +++ exited with 0 +++ [pid 513] +++ exited with 0 +++ [pid 504] +++ exited with 0 +++ [pid 303] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=26, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 515] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 508] rt_sigprocmask(SIG_SETMASK, [], [pid 507] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 506] rt_sigprocmask(SIG_SETMASK, [], [pid 303] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 303] ioctl(3, LOOP_CLR_FD) = 0 [pid 303] close(3 [pid 515] <... prctl resumed>) = 0 [pid 508] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 507] <... prctl resumed>) = 0 [pid 506] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 303] <... close resumed>) = 0 [pid 303] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555557294750) = 29 ./strace-static-x86_64: Process 516 attached [pid 516] set_robust_list(0x555557294760, 24) = 0 [pid 516] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 516] setpgid(0, 0) = 0 [pid 516] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 515] setpgid(0, 0 [pid 508] memfd_create("syzkaller", 0 [pid 507] setpgid(0, 0 [pid 506] creat(0x20000100, 000 [pid 515] <... setpgid resumed>) = 0 [pid 516] <... openat resumed>) = 3 [pid 516] write(3, "1000", 4) = 4 [pid 516] close(3) = 0 [pid 516] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 516] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, NULL, 8) = 0 [pid 516] rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 [pid 516] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb6c000 [pid 516] mprotect(0x7efd4eb6d000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 516] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [pid 516] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb8c990, parent_tid=0x7efd4eb8c990, exit_signal=0, stack=0x7efd4eb6c000, stack_size=0x20240, tls=0x7efd4eb8c6c0} [pid 508] <... memfd_create resumed>) = 5 [pid 507] <... setpgid resumed>) = 0 [pid 506] <... creat resumed>) = 4 [pid 516] <... clone3 resumed> => {parent_tid=[30]}, 88) = 30 [pid 515] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 508] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 516] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 516] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 516] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 516] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7efd4eb4b000 [pid 516] mprotect(0x7efd4eb4c000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 516] rt_sigprocmask(SIG_BLOCK, ~[], [], 8) = 0 [ 23.458545][ T493] RIP: 0010:ext4_enable_quotas+0x96a/0x980 [ 23.464704][ T493] Code: ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 4f f9 ff ff 49 89 d7 48 89 df e8 93 a8 bb ff 4c 89 fa e9 3c f9 ff ff e8 06 59 75 ff <0f> 0b e8 ff 58 75 ff 0f 0b e8 b8 78 f4 02 0f 1f 84 00 00 00 00 00 [ 23.484894][ T493] RSP: 0018:ffffc900014377c0 EFLAGS: 00010293 [ 23.491196][ T493] RAX: ffffffff81ff958a RBX: 0000000000000000 RCX: ffff888115729440 [ 23.499483][ T493] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [pid 516] clone3({flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID, child_tid=0x7efd4eb6b990, parent_tid=0x7efd4eb6b990, exit_signal=0, stack=0x7efd4eb4b000, stack_size=0x20240, tls=0x7efd4eb6b6c0} => {parent_tid=[31]}, 88) = 31 [pid 516] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 516] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 516] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}./strace-static-x86_64: Process 517 attached [pid 517] set_robust_list(0x7efd4eb8c9a0, 24) = 0 [pid 517] rt_sigprocmask(SIG_SETMASK, [], NULL, 8) = 0 [pid 507] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 506] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 515] <... openat resumed>) = 3 [pid 508] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 517] memfd_create("syzkaller", 0 [pid 500] close(3) = 0 [pid 517] <... memfd_create resumed>) = 3 [pid 500] close(4 [pid 517] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 500] <... close resumed>) = 0 [pid 517] <... mmap resumed>) = 0x7efd4674b000 [pid 515] write(3, "1000", 4 [pid 508] close(5 [pid 507] <... openat resumed>) = 3 [pid 506] <... futex resumed>) = 0 [pid 500] close(5./strace-static-x86_64: Process 518 attached [pid 517] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 518] set_robust_list(0x7efd4eb6b9a0, 24 [pid 500] close(6 [pid 518] <... set_robust_list resumed>) = 0 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 518] rt_sigprocmask(SIG_SETMASK, [], [pid 500] close(7 [pid 518] <... rt_sigprocmask resumed>NULL, 8) = 0 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 518] creat("./bus", 000 [pid 500] close(8 [pid 518] <... creat resumed>) = 4 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 518] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 517] <... write resumed>) = 262144 [pid 500] close(9 [pid 518] <... futex resumed>) = 1 [pid 516] <... futex resumed>) = 0 [pid 515] <... write resumed>) = 4 [pid 508] <... close resumed>) = 0 [pid 507] write(3, "1000", 4 [pid 506] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 518] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 517] munmap(0x7efd4674b000, 262144 [pid 516] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 500] close(10 [pid 518] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 517] <... munmap resumed>) = 0 [pid 516] <... futex resumed>) = 0 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 518] mount("/dev/loop0", "./bus", NULL, MS_BIND, NULL [pid 517] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 516] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 500] close(11 [pid 518] <... mount resumed>) = 0 [pid 517] <... openat resumed>) = 5 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 518] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 517] ioctl(5, LOOP_SET_FD, 3 [pid 500] close(12 [pid 518] <... futex resumed>) = 1 [pid 517] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 516] <... futex resumed>) = 0 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 518] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 517] ioctl(5, LOOP_CLR_FD [pid 516] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 500] close(13 [pid 518] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 517] <... ioctl resumed>) = 0 [pid 516] <... futex resumed>) = 0 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 518] open("./bus", O_RDWR|O_SYNC|O_NOATIME|0x3c [pid 516] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 500] close(14 [pid 518] <... open resumed>) = 6 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 518] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 500] close(15 [pid 518] <... futex resumed>) = 1 [pid 516] <... futex resumed>) = 0 [pid 515] close(3 [pid 508] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 507] <... write resumed>) = 4 [pid 503] close(3 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 518] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 517] ioctl(5, LOOP_SET_FD, 3 [pid 516] futex(0x7efd4ec586d8, FUTEX_WAKE_PRIVATE, 1000000 [pid 515] <... close resumed>) = 0 [pid 508] <... futex resumed>) = 0 [pid 507] close(3 [pid 503] <... close resumed>) = 0 [pid 500] close(16 [pid 518] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 517] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 516] <... futex resumed>) = 0 [pid 503] close(4 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 518] mmap(0x20000000, 6291456, PROT_WRITE|PROT_GROWSDOWN|PROT_GROWSUP, MAP_SHARED|MAP_FIXED, 6, 0 [pid 517] close(5 [pid 516] futex(0x7efd4ec586dc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 503] <... close resumed>) = 0 [pid 500] close(17 [pid 518] <... mmap resumed>) = 0x20000000 [pid 517] <... close resumed>) = 0 [pid 515] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 508] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 507] <... close resumed>) = 0 [pid 503] close(5 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 518] futex(0x7efd4ec586dc, FUTEX_WAKE_PRIVATE, 1000000 [pid 517] close(3 [pid 503] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 500] close(18 [pid 518] <... futex resumed>) = 1 [pid 517] <... close resumed>) = 0 [pid 516] <... futex resumed>) = 0 [pid 503] close(6 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 518] futex(0x7efd4ec586d8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 517] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 516] futex(0x7efd4ec586c8, FUTEX_WAKE_PRIVATE, 1000000 [pid 503] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 500] close(19 [pid 517] <... futex resumed>) = 0 [pid 516] <... futex resumed>) = 0 [pid 503] close(7 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 517] memfd_create("syzkaller", 0 [pid 503] <... close resumed>) = -1 EBADF (Bad file descriptor) [ 23.507889][ T493] RBP: ffffc90001437930 R08: ffffffff81ff9087 R09: ffffed102170dc83 [ 23.516722][ T493] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 [ 23.524960][ T493] R13: 0000000000000004 R14: dffffc0000000000 R15: ffff88812317f464 [ 23.533242][ T493] FS: 00007efd4eb8c6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 [ 23.542473][ T493] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.549233][ T493] CR2: 00007efd4ec24194 CR3: 0000000113b49000 CR4: 00000000003506a0 [pid 500] close(20 [pid 517] <... memfd_create resumed>) = 3 [pid 503] close(8 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 517] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 503] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 500] close(21 [pid 517] <... mmap resumed>) = -1 ENOMEM (Cannot allocate memory) [pid 503] close(9 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 517] close(3 [pid 503] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 500] close(22 [pid 517] <... close resumed>) = 0 [pid 503] close(10 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 517] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 503] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 500] close(23 [pid 517] <... futex resumed>) = 0 [pid 503] close(11 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 517] futex(0x7efd4ec586c8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 515] <... futex resumed>) = 0 [pid 507] futex(0x7efd4ec586cc, FUTEX_WAKE_PRIVATE, 1000000 [pid 503] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 500] close(24 [pid 516] close(3 [pid 503] close(12 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 516] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 503] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 500] close(25 [pid 516] close(4 [pid 503] close(13 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 516] <... close resumed>) = 0 [pid 503] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 500] close(26 [pid 516] close(5 [pid 503] close(14 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 516] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 503] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 500] close(27 [pid 516] close(6 [pid 503] close(15 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 516] <... close resumed>) = 0 [pid 515] rt_sigaction(SIGRT_1, {sa_handler=0x7efd4ebfdb70, sa_mask=[], sa_flags=SA_RESTORER|SA_ONSTACK|SA_RESTART|SA_SIGINFO, sa_restorer=0x7efd4eb9fde0}, [pid 507] <... futex resumed>) = 0 [pid 503] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 500] close(28 [pid 516] close(7 [pid 503] close(16 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 516] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 503] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 500] close(29 [pid 516] close(8 [pid 503] close(17 [pid 500] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 516] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 503] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 500] exit_group(0 [pid 516] close(9 [pid 505] <... futex resumed>) = ? [pid 503] close(18 [pid 500] <... exit_group resumed>) = ? [pid 516] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 505] +++ exited with 0 +++ [pid 503] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 516] close(10 [pid 503] close(19 [pid 516] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 503] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 516] close(11 [pid 503] close(20 [pid 516] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 503] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 516] close(12 [pid 503] close(21 [pid 516] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 503] <... close resumed>) = -1 EBADF (Bad file descriptor) [pid 516] close(13 [ 23.557367][ T493] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.565788][ T493] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.574027][ T493] Kernel panic - not syncing: Fatal exception [ 23.580106][ T493] Kernel Offset: disabled [ 23.584232][ T493] Rebooting in 86400 seconds..