./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2372698859 <...> Warning: Permanently added '10.128.1.119' (ECDSA) to the list of known hosts. execve("./syz-executor2372698859", ["./syz-executor2372698859"], 0x7ffc93456180 /* 10 vars */) = 0 brk(NULL) = 0x5555561ed000 brk(0x5555561edc40) = 0x5555561edc40 arch_prctl(ARCH_SET_FS, 0x5555561ed300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 readlink("/proc/self/exe", "/root/syz-executor2372698859", 4096) = 28 brk(0x55555620ec40) = 0x55555620ec40 brk(0x55555620f000) = 0x55555620f000 mprotect(0x7f7c06893000, 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 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 305 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 306 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 307 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 308 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 309 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 310 ./strace-static-x86_64: Process 310 attached [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR./strace-static-x86_64: Process 308 attached [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 310] <... openat resumed>) = 3 [pid 308] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 308] close(3) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 310] close(3) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 311 ./strace-static-x86_64: Process 306 attached [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 312 [pid 306] <... openat resumed>) = 3 [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=0x5555561ed5d0) = 313 ./strace-static-x86_64: Process 311 attached [pid 311] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 311] setpgid(0, 0) = 0 [pid 311] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 311] write(3, "1000", 4) = 4 [pid 311] close(3) = 0 [pid 311] memfd_create("syzkaller", 0) = 3 [pid 311] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 311] 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 309 attached ./strace-static-x86_64: Process 307 attached ./strace-static-x86_64: Process 312 attached ./strace-static-x86_64: Process 313 attached [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 312] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 309] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 305 attached [pid 307] <... openat resumed>) = 3 [pid 309] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 312] <... prctl resumed>) = 0 [pid 309] close(3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 312] setpgid(0, 0 [pid 309] <... close resumed>) = 0 [pid 307] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 312] <... setpgid resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] close(3 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 314 [pid 307] <... close resumed>) = 0 [pid 312] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 312] <... openat resumed>) = 3 [pid 312] write(3, "1000", 4 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 315 [pid 305] <... openat resumed>) = 3 [pid 312] <... write resumed>) = 4 [pid 305] ioctl(3, LOOP_CLR_FD [pid 312] close(3) = 0 [pid 305] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 312] memfd_create("syzkaller", 0) = 3 [pid 305] close(3 [pid 312] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 305] <... close resumed>) = 0 [pid 312] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 313] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 316 [pid 313] <... prctl resumed>) = 0 [pid 312] 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 313] setpgid(0, 0) = 0 [pid 312] <... write resumed>) = 262144 [pid 312] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 312] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 312] ioctl(4, LOOP_SET_FD, 3 [pid 313] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 311] <... write resumed>) = 262144 ./strace-static-x86_64: Process 316 attached [pid 316] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 312] <... ioctl resumed>) = 0 [pid 316] <... prctl resumed>) = 0 [pid 312] close(3 [pid 316] setpgid(0, 0 [pid 312] <... close resumed>) = 0 [pid 316] <... setpgid resumed>) = 0 [pid 312] mkdir("./file0", 0777 [pid 313] write(3, "1000", 4) = 4 [pid 313] close(3 [pid 316] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 312] <... mkdir resumed>) = 0 [pid 316] <... openat resumed>) = 3 [pid 312] mount("/dev/loop5", "./file0", "ext4", 0, "stripe=0x0000000000000001,jqfmt=vfsv0,nouid32,,errors=continue" [pid 316] write(3, "1000", 4 [pid 313] <... close resumed>) = 0 [pid 313] memfd_create("syzkaller", 0) = 3 [ 22.068128][ T22] audit: type=1400 audit(1678913949.290:73): avc: denied { execmem } for pid=304 comm="syz-executor237" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [pid 313] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 311] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 311] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 311] ioctl(4, LOOP_SET_FD, 3 [pid 313] 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 314 attached [pid 314] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 314] setpgid(0, 0) = 0 [pid 314] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 314] write(3, "1000", 4) = 4 [pid 314] close(3) = 0 ./strace-static-x86_64: Process 315 attached [pid 316] <... write resumed>) = 4 [pid 314] memfd_create("syzkaller", 0 [pid 316] close(3 [pid 315] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 314] <... memfd_create resumed>) = 3 [pid 313] <... write resumed>) = 262144 [pid 315] setpgid(0, 0 [pid 314] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 315] <... setpgid resumed>) = 0 [pid 314] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 315] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 313] munmap(0x7f7bfe3d8000, 262144 [pid 315] write(3, "1000", 4 [pid 313] <... munmap resumed>) = 0 [pid 315] <... write resumed>) = 4 [pid 313] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 315] close(3 [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 [pid 315] <... close resumed>) = 0 [pid 315] memfd_create("syzkaller", 0) = 3 [pid 315] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 315] 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 314] <... write resumed>) = 262144 [pid 314] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 314] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 315] <... write resumed>) = 262144 [pid 315] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 315] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 316] <... close resumed>) = 0 [pid 316] memfd_create("syzkaller", 0 [pid 315] <... openat resumed>) = 4 [pid 314] <... openat resumed>) = 4 [pid 313] <... openat resumed>) = 4 [pid 311] <... ioctl resumed>) = 0 [pid 316] <... memfd_create resumed>) = 3 [pid 315] ioctl(4, LOOP_SET_FD, 3 [pid 314] ioctl(4, LOOP_SET_FD, 3 [pid 313] ioctl(4, LOOP_SET_FD, 3 [pid 311] close(3 [pid 316] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 311] <... close resumed>) = 0 [pid 311] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 311] mount("/dev/loop3", "./file0", "ext4", 0, "stripe=0x0000000000000001,jqfmt=vfsv0,nouid32,,errors=continue" [pid 316] 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 316] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 316] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 315] <... ioctl resumed>) = 0 [pid 313] <... ioctl resumed>) = 0 [pid 313] close(3) = 0 [pid 313] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 313] mount("/dev/loop1", "./file0", "ext4", 0, "stripe=0x0000000000000001,jqfmt=vfsv0,nouid32,,errors=continue" [pid 315] close(3) = 0 [pid 315] mkdir("./file0", 0777) = -1 EEXIST (File exists) [ 22.114416][ T312] EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled [ 22.124381][ T22] audit: type=1400 audit(1678913949.290:74): avc: denied { read write } for pid=310 comm="syz-executor237" name="loop5" dev="devtmpfs" ino=9284 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 315] mount("/dev/loop2", "./file0", "ext4", 0, "stripe=0x0000000000000001,jqfmt=vfsv0,nouid32,,errors=continue" [pid 314] <... ioctl resumed>) = 0 [pid 316] <... openat resumed>) = 4 [pid 316] ioctl(4, LOOP_SET_FD, 3 [pid 314] close(3) = 0 [ 22.158131][ T22] audit: type=1400 audit(1678913949.290:75): avc: denied { open } for pid=310 comm="syz-executor237" path="/dev/loop5" dev="devtmpfs" ino=9284 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 22.170302][ T311] EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled [pid 314] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 314] mount("/dev/loop4", "./file0", "ext4", 0, "stripe=0x0000000000000001,jqfmt=vfsv0,nouid32,,errors=continue" [pid 316] <... ioctl resumed>) = 0 [ 22.184137][ T22] audit: type=1400 audit(1678913949.300:76): avc: denied { ioctl } for pid=308 comm="syz-executor237" path="/dev/loop3" dev="devtmpfs" ino=9282 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 22.193201][ T315] EXT4-fs (loop2): Quota format mount options ignored when QUOTA feature is enabled [ 22.219193][ T313] EXT4-fs (loop1): Quota format mount options ignored when QUOTA feature is enabled [ 22.228449][ T22] audit: type=1400 audit(1678913949.330:77): avc: denied { mounton } for pid=312 comm="syz-executor237" path="/root/file0" dev="sda1" ino=1138 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [pid 316] close(3) = 0 [pid 316] mkdir("./file0", 0777) = -1 EEXIST (File exists) [ 22.262421][ T314] EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled [ 22.273516][ T316] EXT4-fs (loop0): Quota format mount options ignored when QUOTA feature is enabled [ 22.296773][ T312] EXT4-fs (loop5): mounted filesystem without journal. Opts: stripe=0x0000000000000001,jqfmt=vfsv0,nouid32,,errors=continue [ 22.296800][ T314] EXT4-fs (loop4): mounted filesystem without journal. Opts: stripe=0x0000000000000001,jqfmt=vfsv0,nouid32,,errors=continue [ 22.323044][ T315] EXT4-fs (loop2): mounted filesystem without journal. Opts: stripe=0x0000000000000001,jqfmt=vfsv0,nouid32,,errors=continue [ 22.338661][ T315] ext4 filesystem being mounted at /root/file0 supports timestamps until 2038 (0x7fffffff) [ 22.341988][ T312] ext4 filesystem being mounted at /root/file0 supports timestamps until 2038 (0x7fffffff) [pid 316] mount("/dev/loop0", "./file0", "ext4", 0, "stripe=0x0000000000000001,jqfmt=vfsv0,nouid32,,errors=continue" [pid 312] <... mount resumed>) = 0 [pid 315] <... mount resumed>) = 0 [pid 314] <... mount resumed>) = 0 [pid 312] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 315] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 315] chdir("./file0") = 0 [pid 315] ioctl(4, LOOP_CLR_FD) = 0 [ 22.349268][ T22] audit: type=1400 audit(1678913949.560:78): avc: denied { mount } for pid=315 comm="syz-executor237" name="/" dev="loop2" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 22.359356][ T314] ext4 filesystem being mounted at /root/file0 supports timestamps until 2038 (0x7fffffff) [ 22.392573][ T311] EXT4-fs (loop3): mounted filesystem without journal. Opts: stripe=0x0000000000000001,jqfmt=vfsv0,nouid32,,errors=continue [pid 315] close(4) = 0 [pid 312] <... openat resumed>) = 3 [pid 315] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 4 [pid 315] ioctl(4, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 315] exit_group(0) = ? [pid 315] +++ exited with 0 +++ [pid 312] chdir("./file0" [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=315, si_uid=0, si_status=0, si_utime=0, si_stime=4} --- [pid 312] <... chdir resumed>) = 0 [pid 314] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 314] chdir("./file0") = 0 [pid 314] ioctl(4, LOOP_CLR_FD) = 0 [pid 314] close(4) = 0 [pid 314] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 4 [pid 314] ioctl(4, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 314] exit_group(0) = ? [pid 314] +++ exited with 0 +++ [pid 312] ioctl(4, LOOP_CLR_FD [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=314, si_uid=0, si_status=0, si_utime=0, si_stime=4} --- [pid 311] <... mount resumed>) = 0 [pid 312] <... ioctl resumed>) = 0 [ 22.407143][ T311] ext4 filesystem being mounted at /root/file0 supports timestamps until 2038 (0x7fffffff) [ 22.418425][ T313] EXT4-fs (loop1): mounted filesystem without journal. Opts: stripe=0x0000000000000001,jqfmt=vfsv0,nouid32,,errors=continue [ 22.423117][ T316] EXT4-fs (loop0): mounted filesystem without journal. Opts: stripe=0x0000000000000001,jqfmt=vfsv0,nouid32,,errors=continue [ 22.446076][ T316] ext4 filesystem being mounted at /root/file0 supports timestamps until 2038 (0x7fffffff) [pid 311] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 316] <... mount resumed>) = 0 [pid 312] close(4 [pid 311] <... openat resumed>) = 3 [pid 316] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 312] <... close resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 316] <... openat resumed>) = 3 [pid 312] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 311] chdir("./file0" [pid 309] <... openat resumed>) = 3 [pid 316] chdir("./file0" [pid 313] <... mount resumed>) = 0 [pid 312] <... openat resumed>) = 4 [pid 311] <... chdir resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 316] <... chdir resumed>) = 0 [pid 313] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 312] ioctl(4, BLKSECDISCARD, [0, 0] [pid 311] ioctl(4, LOOP_CLR_FD [pid 309] <... ioctl resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 316] ioctl(4, LOOP_CLR_FD [pid 312] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 311] <... ioctl resumed>) = 0 [pid 309] close(3 [pid 307] <... openat resumed>) = 3 [pid 313] <... openat resumed>) = 3 [pid 316] <... ioctl resumed>) = 0 [pid 313] chdir("./file0" [pid 312] exit_group(0 [pid 311] close(4 [pid 309] <... close resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 316] close(4 [pid 313] <... chdir resumed>) = 0 [pid 312] <... exit_group resumed>) = ? [pid 311] <... close resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] <... ioctl resumed>) = 0 [pid 316] <... close resumed>) = 0 [pid 312] +++ exited with 0 +++ [pid 311] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=312, si_uid=0, si_status=0, si_utime=0, si_stime=6} --- [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 307] close(3 [pid 316] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 311] <... openat resumed>) = 4 [pid 310] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 316] <... openat resumed>) = 4 [pid 313] ioctl(4, LOOP_CLR_FD [pid 311] ioctl(4, BLKSECDISCARD, [0, 0] [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 342 [pid 307] <... close resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 343 [pid 316] ioctl(4, BLKSECDISCARD, [0, 0] [pid 313] <... ioctl resumed>) = 0 [pid 311] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 316] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 313] close(4 [pid 311] exit_group(0 [pid 316] exit_group(0 [pid 313] <... close resumed>) = 0 [pid 311] <... exit_group resumed>) = ? [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 344 [pid 316] <... exit_group resumed>) = ? [pid 311] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=311, si_uid=0, si_status=0, si_utime=0, si_stime=4} --- [pid 316] +++ exited with 0 +++ [pid 313] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 4 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=316, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- ./strace-static-x86_64: Process 344 attached ./strace-static-x86_64: Process 343 attached ./strace-static-x86_64: Process 342 attached [pid 313] ioctl(4, BLKSECDISCARD, [0, 0] [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3 [pid 313] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 308] <... close resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 344] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 343] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 342] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 313] exit_group(0 [pid 305] <... restart_syscall resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 345 [pid 344] <... prctl resumed>) = 0 [pid 343] <... prctl resumed>) = 0 [pid 342] <... prctl resumed>) = 0 [pid 313] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 345 attached [pid 345] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 345] setpgid(0, 0) = 0 [pid 345] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 313] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=313, si_uid=0, si_status=0, si_utime=0, si_stime=5} --- [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 345] <... openat resumed>) = 3 [pid 345] write(3, "1000", 4 [pid 306] <... restart_syscall resumed>) = 0 [pid 343] setpgid(0, 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 343] <... setpgid resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 305] <... openat resumed>) = 3 [pid 306] <... openat resumed>) = 3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 306] ioctl(3, LOOP_CLR_FD [pid 305] <... ioctl resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 305] close(3 [pid 306] close(3) = 0 [pid 305] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 343] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 344] setpgid(0, 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 346 [pid 345] <... write resumed>) = 4 [pid 345] close(3) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 347 [pid 345] memfd_create("syzkaller", 0) = 3 [pid 345] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 343] <... openat resumed>) = 3 [pid 344] <... setpgid resumed>) = 0 [pid 343] write(3, "1000", 4 [pid 345] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 344] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 343] <... write resumed>) = 4 [pid 343] close(3) = 0 [pid 344] <... openat resumed>) = 3 [pid 343] memfd_create("syzkaller", 0) = 3 [pid 343] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 344] write(3, "1000", 4) = 4 [pid 344] close(3) = 0 [pid 345] 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 344] memfd_create("syzkaller", 0 [pid 343] 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 342] setpgid(0, 0 [pid 344] <... memfd_create resumed>) = 3 [pid 342] <... setpgid resumed>) = 0 [pid 344] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 347 attached [pid 342] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 344] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 347] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 347] setpgid(0, 0) = 0 [pid 347] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 347] write(3, "1000", 4) = 4 [pid 347] close(3) = 0 [pid 347] memfd_create("syzkaller", 0) = 3 [pid 342] <... openat resumed>) = 3 [pid 347] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 344] 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 342] write(3, "1000", 4 [pid 345] <... write resumed>) = 262144 [pid 342] <... write resumed>) = 4 [pid 342] close(3) = 0 [pid 347] 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 342] memfd_create("syzkaller", 0./strace-static-x86_64: Process 346 attached [pid 345] munmap(0x7f7bfe3d8000, 262144 [pid 346] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 342] <... memfd_create resumed>) = 3 [pid 346] <... prctl resumed>) = 0 [pid 345] <... munmap resumed>) = 0 [ 22.458672][ T313] ext4 filesystem being mounted at /root/file0 supports timestamps until 2038 (0x7fffffff) [pid 342] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 346] setpgid(0, 0 [pid 345] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 343] <... write resumed>) = 262144 [pid 342] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 346] <... setpgid resumed>) = 0 [pid 345] <... openat resumed>) = 4 [pid 346] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 345] ioctl(4, LOOP_SET_FD, 3 [pid 346] <... openat resumed>) = 3 [pid 345] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 346] write(3, "1000", 4 [pid 345] ioctl(4, LOOP_CLR_FD [pid 346] <... write resumed>) = 4 [pid 345] <... ioctl resumed>) = 0 [pid 346] close(3) = 0 [pid 346] memfd_create("syzkaller", 0) = 3 [pid 346] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 342] 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 343] munmap(0x7f7bfe3d8000, 262144 [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 343] <... munmap resumed>) = 0 [pid 347] <... write resumed>) = 262144 [pid 345] ioctl(4, LOOP_SET_FD, 3 [pid 343] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 347] munmap(0x7f7bfe3d8000, 262144 [pid 345] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 343] <... openat resumed>) = 4 [pid 347] <... munmap resumed>) = 0 [pid 345] close(4 [pid 343] ioctl(4, LOOP_SET_FD, 3 [pid 347] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 346] <... write resumed>) = 262144 [pid 345] <... close resumed>) = 0 [pid 344] <... write resumed>) = 262144 [pid 342] <... write resumed>) = 262144 [pid 343] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 347] <... openat resumed>) = 4 [pid 345] close(3 [pid 344] munmap(0x7f7bfe3d8000, 262144 [pid 347] ioctl(4, LOOP_SET_FD, 3 [pid 345] <... close resumed>) = 0 [pid 344] <... munmap resumed>) = 0 [pid 343] ioctl(4, LOOP_CLR_FD [pid 342] munmap(0x7f7bfe3d8000, 262144 [pid 347] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 345] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 343] <... ioctl resumed>) = 0 [pid 344] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 347] ioctl(4, LOOP_CLR_FD [pid 345] <... openat resumed>) = 3 [pid 344] <... openat resumed>) = 4 [pid 347] <... ioctl resumed>) = 0 [pid 346] munmap(0x7f7bfe3d8000, 262144 [pid 345] ioctl(3, BLKSECDISCARD, [0, 0] [pid 344] ioctl(4, LOOP_SET_FD, 3 [pid 346] <... munmap resumed>) = 0 [pid 345] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 344] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 342] <... munmap resumed>) = 0 [pid 346] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 345] exit_group(0 [pid 346] <... openat resumed>) = 4 [pid 345] <... exit_group resumed>) = ? [pid 346] ioctl(4, LOOP_SET_FD, 3 [pid 345] +++ exited with 0 +++ [pid 344] ioctl(4, LOOP_CLR_FD [pid 342] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 346] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 344] <... ioctl resumed>) = 0 [pid 343] ioctl(4, LOOP_SET_FD, 3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=345, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 342] <... openat resumed>) = 4 [pid 347] ioctl(4, LOOP_SET_FD, 3 [pid 346] ioctl(4, LOOP_CLR_FD [pid 343] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 342] ioctl(4, LOOP_SET_FD, 3 [pid 347] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 346] <... ioctl resumed>) = 0 [pid 343] close(4 [pid 342] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 347] close(4 [pid 343] <... close resumed>) = 0 [pid 342] ioctl(4, LOOP_CLR_FD [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 347] <... close resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 347] close(3 [pid 343] close(3 [pid 342] <... ioctl resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 347] <... close resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 347] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 346] ioctl(4, LOOP_SET_FD, 3 [pid 308] close(3 [pid 347] <... openat resumed>) = 3 [pid 346] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] <... close resumed>) = 0 [pid 347] ioctl(3, BLKSECDISCARD, [0, 0] [pid 346] close(4 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 347] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 346] <... close resumed>) = 0 [pid 344] ioctl(4, LOOP_SET_FD, 3 [pid 343] <... close resumed>) = 0 [pid 347] exit_group(0 [pid 346] close(3 [pid 344] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 348 [pid 347] <... exit_group resumed>) = ? [pid 346] <... close resumed>) = 0 [pid 344] close(4 [pid 343] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 347] +++ exited with 0 +++ [pid 346] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 344] <... close resumed>) = 0 [pid 343] <... openat resumed>) = 3 [pid 346] <... openat resumed>) = 3 [pid 344] close(3 [pid 343] ioctl(3, BLKSECDISCARD, [0, 0] [pid 342] ioctl(4, LOOP_SET_FD, 3 [pid 346] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 343] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 346] exit_group(0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=347, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 346] <... exit_group resumed>) = ? [pid 346] +++ exited with 0 +++ [pid 344] <... close resumed>) = 0 [pid 343] exit_group(0 [pid 342] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 344] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 343] <... exit_group resumed>) = ? [pid 342] close(4 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=346, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 344] <... openat resumed>) = 3 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 305] <... openat resumed>) = 3 [pid 306] <... restart_syscall resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 342] <... close resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 342] close(3 [pid 305] close(3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 305] <... close resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] <... ioctl resumed>) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 350 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 349 [pid 343] +++ exited with 0 +++ [pid 344] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=343, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 349 attached [pid 344] exit_group(0 [pid 349] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 349] setpgid(0, 0 [pid 344] <... exit_group resumed>) = ? [pid 342] <... close resumed>) = 0 [pid 349] <... setpgid resumed>) = 0 [pid 349] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 310] <... restart_syscall resumed>) = 0 [pid 344] +++ exited with 0 +++ [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 342] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] <... openat resumed>) = 3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=344, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 342] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 342] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] <... ioctl resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 342] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] close(3) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 342] exit_group(0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 342] <... exit_group resumed>) = ? [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 351 [pid 349] write(3, "1000", 4 [pid 307] <... openat resumed>) = 3 [pid 349] <... write resumed>) = 4 [pid 307] ioctl(3, LOOP_CLR_FD [pid 349] close(3 [pid 307] <... ioctl resumed>) = 0 [pid 349] <... close resumed>) = 0 [pid 307] close(3 [pid 349] memfd_create("syzkaller", 0 [pid 307] <... close resumed>) = 0 [pid 349] <... memfd_create resumed>) = 3 [pid 342] +++ exited with 0 +++ [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 349] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 349] 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 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=342, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 352 [pid 309] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR./strace-static-x86_64: Process 348 attached ) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3 [pid 348] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 309] <... close resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 349] <... write resumed>) = 262144 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 353 [pid 348] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 350 attached [pid 348] setpgid(0, 0 [pid 350] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 348] <... setpgid resumed>) = 0 [pid 350] setpgid(0, 0 [pid 348] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 352 attached [pid 350] <... setpgid resumed>) = 0 [pid 349] munmap(0x7f7bfe3d8000, 262144 [pid 352] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 350] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 348] <... openat resumed>) = 3 [pid 352] <... prctl resumed>) = 0 [pid 350] <... openat resumed>) = 3 [pid 349] <... munmap resumed>) = 0 [pid 348] write(3, "1000", 4 [pid 352] setpgid(0, 0 [pid 350] write(3, "1000", 4 [pid 349] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 348] <... write resumed>) = 4 ./strace-static-x86_64: Process 351 attached [pid 352] <... setpgid resumed>) = 0 [pid 350] <... write resumed>) = 4 [pid 349] <... openat resumed>) = 4 [pid 348] close(3 [pid 352] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 351] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 350] close(3 [pid 349] ioctl(4, LOOP_SET_FD, 3 [pid 348] <... close resumed>) = 0 [pid 352] <... openat resumed>) = 3 [pid 351] <... prctl resumed>) = 0 [pid 350] <... close resumed>) = 0 [pid 349] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 348] memfd_create("syzkaller", 0 [pid 352] write(3, "1000", 4 [pid 350] memfd_create("syzkaller", 0 [pid 349] ioctl(4, LOOP_CLR_FD [pid 351] setpgid(0, 0 [pid 348] <... memfd_create resumed>) = 3 ./strace-static-x86_64: Process 353 attached [pid 352] <... write resumed>) = 4 [pid 350] <... memfd_create resumed>) = 3 [pid 349] <... ioctl resumed>) = 0 [pid 348] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 351] <... setpgid resumed>) = 0 [pid 353] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 352] close(3 [pid 350] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 348] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 351] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 353] <... prctl resumed>) = 0 [pid 352] <... close resumed>) = 0 [pid 350] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 353] setpgid(0, 0 [pid 352] memfd_create("syzkaller", 0 [pid 351] <... openat resumed>) = 3 [pid 350] 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 348] 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 353] <... setpgid resumed>) = 0 [pid 352] <... memfd_create resumed>) = 3 [pid 351] write(3, "1000", 4 [pid 350] <... write resumed>) = 262144 [pid 349] ioctl(4, LOOP_SET_FD, 3 [pid 353] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 352] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 351] <... write resumed>) = 4 [pid 350] munmap(0x7f7bfe3d8000, 262144 [pid 349] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 353] <... openat resumed>) = 3 [pid 352] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 350] <... munmap resumed>) = 0 [pid 349] close(4 [pid 351] close(3 [pid 353] write(3, "1000", 4 [pid 352] 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 350] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 349] <... close resumed>) = 0 [pid 348] <... write resumed>) = 262144 [pid 353] <... write resumed>) = 4 [pid 352] <... write resumed>) = 262144 [pid 351] <... close resumed>) = 0 [pid 350] <... openat resumed>) = 4 [pid 349] close(3 [pid 353] close(3 [pid 352] munmap(0x7f7bfe3d8000, 262144 [pid 351] memfd_create("syzkaller", 0 [pid 350] ioctl(4, LOOP_SET_FD, 3 [pid 349] <... close resumed>) = 0 [pid 348] munmap(0x7f7bfe3d8000, 262144 [pid 353] <... close resumed>) = 0 [pid 352] <... munmap resumed>) = 0 [pid 351] <... memfd_create resumed>) = 3 [pid 350] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 349] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 353] memfd_create("syzkaller", 0 [pid 352] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 351] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 350] ioctl(4, LOOP_CLR_FD [pid 349] <... openat resumed>) = 3 [pid 348] <... munmap resumed>) = 0 [pid 353] <... memfd_create resumed>) = 3 [pid 352] <... openat resumed>) = 4 [pid 351] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 350] <... ioctl resumed>) = 0 [pid 349] ioctl(3, BLKSECDISCARD, [0, 0] [pid 348] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 353] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 352] ioctl(4, LOOP_SET_FD, 3 [pid 349] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 353] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 352] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 349] exit_group(0 [pid 353] 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 352] ioctl(4, LOOP_CLR_FD [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 349] <... exit_group resumed>) = ? [pid 348] <... openat resumed>) = 4 [pid 353] <... write resumed>) = 262144 [pid 352] <... ioctl resumed>) = 0 [pid 351] <... write resumed>) = 262144 [pid 350] ioctl(4, LOOP_SET_FD, 3 [pid 349] +++ exited with 0 +++ [pid 348] ioctl(4, LOOP_SET_FD, 3 [pid 353] munmap(0x7f7bfe3d8000, 262144 [pid 351] munmap(0x7f7bfe3d8000, 262144 [pid 350] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 348] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=349, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 353] <... munmap resumed>) = 0 [pid 350] close(4 [pid 348] ioctl(4, LOOP_CLR_FD [pid 353] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 351] <... munmap resumed>) = 0 [pid 350] <... close resumed>) = 0 [pid 348] <... ioctl resumed>) = 0 [pid 353] <... openat resumed>) = 4 [pid 351] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 350] close(3 [pid 353] ioctl(4, LOOP_SET_FD, 3 [pid 351] <... openat resumed>) = 4 [pid 350] <... close resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 353] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 352] ioctl(4, LOOP_SET_FD, 3 [pid 351] ioctl(4, LOOP_SET_FD, 3 [pid 350] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 353] ioctl(4, LOOP_CLR_FD [pid 352] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 351] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 350] <... openat resumed>) = 3 [pid 305] <... openat resumed>) = 3 [pid 353] <... ioctl resumed>) = 0 [pid 352] close(4 [pid 351] ioctl(4, LOOP_CLR_FD [pid 350] ioctl(3, BLKSECDISCARD, [0, 0] [pid 305] ioctl(3, LOOP_CLR_FD [pid 352] <... close resumed>) = 0 [pid 351] <... ioctl resumed>) = 0 [pid 350] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 348] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... ioctl resumed>) = 0 [pid 352] close(3 [pid 350] exit_group(0 [pid 348] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] close(3 [pid 352] <... close resumed>) = 0 [pid 350] <... exit_group resumed>) = ? [pid 348] close(4 [pid 305] <... close resumed>) = 0 [pid 353] ioctl(4, LOOP_SET_FD, 3 [pid 352] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 350] +++ exited with 0 +++ [pid 348] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 353] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 352] <... openat resumed>) = 3 [pid 351] ioctl(4, LOOP_SET_FD, 3 [pid 348] close(3 [pid 353] close(4 [pid 352] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=350, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 353] <... close resumed>) = 0 [pid 352] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 353] close(3 [pid 352] exit_group(0 [pid 351] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... openat resumed>) = 3 [pid 353] <... close resumed>) = 0 [pid 352] <... exit_group resumed>) = ? [pid 351] close(4 [pid 348] <... close resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 354 [pid 353] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 352] +++ exited with 0 +++ [pid 306] <... ioctl resumed>) = 0 [pid 353] <... openat resumed>) = 3 [pid 306] close(3 [pid 353] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] <... close resumed>) = 0 [pid 353] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 353] exit_group(0) = ? [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 355 [pid 353] +++ exited with 0 +++ ./strace-static-x86_64: Process 354 attached [pid 354] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 354] setpgid(0, 0) = 0 [pid 354] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 354] write(3, "1000", 4) = 4 [pid 354] close(3) = 0 [pid 354] memfd_create("syzkaller", 0) = 3 [pid 354] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 ./strace-static-x86_64: Process 355 attached [pid 355] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 355] setpgid(0, 0) = 0 [pid 355] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 351] <... close resumed>) = 0 [pid 351] close(3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=352, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 348] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 355] <... openat resumed>) = 3 [pid 355] write(3, "1000", 4) = 4 [pid 355] close(3) = 0 [pid 355] memfd_create("syzkaller", 0 [pid 351] <... close resumed>) = 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=353, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 351] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 348] <... openat resumed>) = 3 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 355] <... memfd_create resumed>) = 3 [pid 351] <... openat resumed>) = 3 [pid 348] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 351] ioctl(3, BLKSECDISCARD, [0, 0] [pid 348] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 351] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] <... openat resumed>) = 3 [pid 355] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 348] exit_group(0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 355] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 351] exit_group(0 [pid 348] <... exit_group resumed>) = ? [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] <... ioctl resumed>) = 0 [pid 351] <... exit_group resumed>) = ? [pid 309] <... openat resumed>) = 3 [pid 307] close(3 [pid 354] 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 348] +++ exited with 0 +++ [pid 309] ioctl(3, LOOP_CLR_FD [pid 307] <... close resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=348, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 351] +++ exited with 0 +++ [pid 309] <... ioctl resumed>) = 0 [pid 308] <... restart_syscall resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=351, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] close(3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 309] <... close resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 310] <... openat resumed>) = 3 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] ioctl(3, LOOP_CLR_FD [pid 310] ioctl(3, LOOP_CLR_FD [pid 308] <... ioctl resumed>) = 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 356 [pid 310] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 310] close(3 [pid 308] <... close resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 354] <... write resumed>) = 262144 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 357 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 358 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 359 [pid 355] 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 358 attached ./strace-static-x86_64: Process 356 attached [pid 358] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 354] munmap(0x7f7bfe3d8000, 262144./strace-static-x86_64: Process 359 attached [pid 358] <... prctl resumed>) = 0 [pid 356] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 354] <... munmap resumed>) = 0 [pid 354] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 354] ioctl(4, LOOP_SET_FD, 3 [pid 359] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 358] setpgid(0, 0 [pid 356] <... prctl resumed>) = 0 [pid 354] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 354] ioctl(4, LOOP_CLR_FD) = 0 [pid 359] <... prctl resumed>) = 0 [pid 358] <... setpgid resumed>) = 0 [pid 356] setpgid(0, 0 [pid 355] <... write resumed>) = 262144 [pid 355] munmap(0x7f7bfe3d8000, 262144 [pid 359] setpgid(0, 0 [pid 358] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 356] <... setpgid resumed>) = 0 [pid 355] <... munmap resumed>) = 0 [pid 355] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 355] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 357 attached [pid 355] ioctl(4, LOOP_CLR_FD [pid 354] ioctl(4, LOOP_SET_FD, 3 [pid 359] <... setpgid resumed>) = 0 [pid 358] <... openat resumed>) = 3 [pid 357] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 356] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 355] <... ioctl resumed>) = 0 [pid 354] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 357] <... prctl resumed>) = 0 [pid 354] close(4 [pid 357] setpgid(0, 0 [pid 354] <... close resumed>) = 0 [pid 357] <... setpgid resumed>) = 0 [pid 354] close(3 [pid 359] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 358] write(3, "1000", 4 [pid 357] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 356] <... openat resumed>) = 3 [pid 354] <... close resumed>) = 0 [pid 359] <... openat resumed>) = 3 [pid 358] <... write resumed>) = 4 [pid 357] <... openat resumed>) = 3 [pid 356] write(3, "1000", 4 [pid 355] ioctl(4, LOOP_SET_FD, 3 [pid 354] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 359] write(3, "1000", 4 [pid 358] close(3 [pid 357] write(3, "1000", 4 [pid 356] <... write resumed>) = 4 [pid 355] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 354] <... openat resumed>) = 3 [pid 357] <... write resumed>) = 4 [pid 355] close(4 [pid 354] ioctl(3, BLKSECDISCARD, [0, 0] [pid 358] <... close resumed>) = 0 [pid 359] <... write resumed>) = 4 [pid 357] close(3 [pid 356] close(3 [pid 355] <... close resumed>) = 0 [pid 354] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 359] close(3 [pid 358] memfd_create("syzkaller", 0 [pid 356] <... close resumed>) = 0 [pid 357] <... close resumed>) = 0 [pid 356] memfd_create("syzkaller", 0 [pid 355] close(3 [pid 354] exit_group(0 [pid 359] <... close resumed>) = 0 [pid 358] <... memfd_create resumed>) = 3 [pid 357] memfd_create("syzkaller", 0 [pid 356] <... memfd_create resumed>) = 3 [pid 355] <... close resumed>) = 0 [pid 359] memfd_create("syzkaller", 0 [pid 358] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 357] <... memfd_create resumed>) = 3 [pid 356] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 355] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 354] <... exit_group resumed>) = ? [pid 359] <... memfd_create resumed>) = 3 [pid 358] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 357] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 356] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 355] <... openat resumed>) = 3 [pid 354] +++ exited with 0 +++ [pid 357] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 355] ioctl(3, BLKSECDISCARD, [0, 0] [pid 358] 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 357] 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] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=354, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 357] <... write resumed>) = 262144 [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] exit_group(0 [pid 357] munmap(0x7f7bfe3d8000, 262144 [pid 355] <... exit_group resumed>) = ? [pid 359] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 357] <... munmap resumed>) = 0 [pid 355] +++ exited with 0 +++ [pid 357] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=355, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] <... openat resumed>) = 4 [pid 357] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 357] ioctl(4, LOOP_CLR_FD) = 0 [pid 359] 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 357] ioctl(4, LOOP_SET_FD, 3 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 357] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 357] close(4 [pid 306] <... openat resumed>) = 3 [pid 305] <... openat resumed>) = 3 [pid 357] <... close resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 305] ioctl(3, LOOP_CLR_FD [pid 357] close(3 [pid 306] <... ioctl resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 359] <... write resumed>) = 262144 [pid 358] <... write resumed>) = 262144 [pid 357] <... close resumed>) = 0 [pid 356] <... write resumed>) = 262144 [pid 306] close(3 [pid 305] close(3 [pid 359] munmap(0x7f7bfe3d8000, 262144 [pid 358] munmap(0x7f7bfe3d8000, 262144 [pid 357] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 356] munmap(0x7f7bfe3d8000, 262144 [pid 306] <... close resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 359] <... munmap resumed>) = 0 [pid 358] <... munmap resumed>) = 0 [pid 357] <... openat resumed>) = 3 [pid 356] <... munmap resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 359] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 358] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 357] ioctl(3, BLKSECDISCARD, [0, 0] [pid 356] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 359] <... openat resumed>) = 4 [pid 358] <... openat resumed>) = 4 [pid 357] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 356] <... openat resumed>) = 4 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 361 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 360 [pid 359] ioctl(4, LOOP_SET_FD, 3 [pid 358] ioctl(4, LOOP_SET_FD, 3 [pid 357] exit_group(0 [pid 356] ioctl(4, LOOP_SET_FD, 3 [pid 359] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 357] <... exit_group resumed>) = ? [pid 356] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] ioctl(4, LOOP_CLR_FD [pid 358] ioctl(4, LOOP_CLR_FD [pid 356] ioctl(4, LOOP_CLR_FD [pid 359] <... ioctl resumed>) = 0 [pid 358] <... ioctl resumed>) = 0 [pid 356] <... ioctl resumed>) = 0 [pid 357] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=357, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 361 attached [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 361] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 309] <... restart_syscall resumed>) = 0 [pid 361] <... prctl resumed>) = 0 [pid 359] ioctl(4, LOOP_SET_FD, 3 [pid 358] ioctl(4, LOOP_SET_FD, 3 [pid 356] ioctl(4, LOOP_SET_FD, 3 [pid 361] setpgid(0, 0 [pid 359] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] <... setpgid resumed>) = 0 [pid 359] close(4 [pid 358] close(4 [pid 356] close(4 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 359] <... close resumed>) = 0 [pid 358] <... close resumed>) = 0 [pid 356] <... close resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 361] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 360 attached [pid 359] close(3 [pid 358] close(3 [pid 356] close(3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 361] <... openat resumed>) = 3 [pid 360] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 359] <... close resumed>) = 0 [pid 358] <... close resumed>) = 0 [pid 356] <... close resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 361] write(3, "1000", 4 [pid 360] <... prctl resumed>) = 0 [pid 359] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 358] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 356] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] close(3 [pid 361] <... write resumed>) = 4 [pid 360] setpgid(0, 0 [pid 359] <... openat resumed>) = 3 [pid 358] <... openat resumed>) = 3 [pid 356] <... openat resumed>) = 3 [pid 309] <... close resumed>) = 0 [pid 361] close(3 [pid 360] <... setpgid resumed>) = 0 [pid 359] ioctl(3, BLKSECDISCARD, [0, 0] [pid 358] ioctl(3, BLKSECDISCARD, [0, 0] [pid 356] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 361] <... close resumed>) = 0 [pid 360] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 359] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 358] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 356] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 361] memfd_create("syzkaller", 0 [pid 360] <... openat resumed>) = 3 [pid 359] exit_group(0 [pid 358] exit_group(0 [pid 356] exit_group(0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 362 [pid 361] <... memfd_create resumed>) = 3 [pid 360] write(3, "1000", 4 [pid 359] <... exit_group resumed>) = ? [pid 358] <... exit_group resumed>) = ? [pid 356] <... exit_group resumed>) = ? [pid 361] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 360] <... write resumed>) = 4 [pid 359] +++ exited with 0 +++ [pid 358] +++ exited with 0 +++ [pid 356] +++ exited with 0 +++ ./strace-static-x86_64: Process 362 attached [pid 361] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 360] close(3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=359, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=358, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 360] <... close resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=356, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 360] memfd_create("syzkaller", 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 360] <... memfd_create resumed>) = 3 [pid 307] <... openat resumed>) = 3 [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 360] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 360] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 307] <... ioctl resumed>) = 0 [pid 362] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 361] <... write resumed>) = 262144 [pid 360] 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 307] close(3 [pid 362] <... prctl resumed>) = 0 [pid 361] munmap(0x7f7bfe3d8000, 262144 [pid 360] <... write resumed>) = 262144 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 307] <... close resumed>) = 0 [pid 361] <... munmap resumed>) = 0 [pid 360] munmap(0x7f7bfe3d8000, 262144 [pid 310] <... openat resumed>) = 3 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 362] setpgid(0, 0 [pid 361] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 360] <... munmap resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 308] <... openat resumed>) = 3 [pid 362] <... setpgid resumed>) = 0 [pid 361] <... openat resumed>) = 4 [pid 360] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 310] <... ioctl resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 363 [pid 362] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 361] ioctl(4, LOOP_SET_FD, 3 [pid 360] <... openat resumed>) = 4 [pid 310] close(3 [pid 308] <... ioctl resumed>) = 0 [pid 362] <... openat resumed>) = 3 [pid 361] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... close resumed>) = 0 [pid 308] close(3 [pid 362] write(3, "1000", 4 [pid 361] ioctl(4, LOOP_CLR_FD [pid 360] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] <... close resumed>) = 0 [pid 362] <... write resumed>) = 4 [pid 361] <... ioctl resumed>) = 0 [pid 360] ioctl(4, LOOP_CLR_FD) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 362] close(3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 364 ./strace-static-x86_64: Process 364 attached [pid 362] <... close resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 365 [pid 362] memfd_create("syzkaller", 0 [pid 360] ioctl(4, LOOP_SET_FD, 3 [pid 362] <... memfd_create resumed>) = 3 [pid 361] ioctl(4, LOOP_SET_FD, 3 [pid 360] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 362] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 361] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] close(4 [pid 362] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 361] close(4 [pid 360] <... close resumed>) = 0 [pid 360] close(3 [pid 361] <... close resumed>) = 0 [pid 360] <... close resumed>) = 0 [pid 362] 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 361] close(3 [pid 360] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 360] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 360] exit_group(0) = ? [pid 361] <... close resumed>) = 0 [pid 360] +++ exited with 0 +++ [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=360, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 362] <... write resumed>) = 262144 [pid 361] <... openat resumed>) = 3 [pid 362] munmap(0x7f7bfe3d8000, 262144 [pid 361] ioctl(3, BLKSECDISCARD, [0, 0] [pid 362] <... munmap resumed>) = 0 [pid 361] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 362] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 361] exit_group(0 [pid 305] <... openat resumed>) = 3 [pid 362] <... openat resumed>) = 4 [pid 361] <... exit_group resumed>) = ? [pid 305] ioctl(3, LOOP_CLR_FD [pid 362] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... ioctl resumed>) = 0 [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 362] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=361, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 366 [pid 362] ioctl(4, LOOP_CLR_FD./strace-static-x86_64: Process 363 attached [pid 364] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 362] <... ioctl resumed>) = 0 [pid 364] <... prctl resumed>) = 0 [pid 363] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 364] setpgid(0, 0 [pid 363] <... prctl resumed>) = 0 [pid 364] <... setpgid resumed>) = 0 [pid 364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 363] setpgid(0, 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 364] <... openat resumed>) = 3 [pid 363] <... setpgid resumed>) = 0 [pid 364] write(3, "1000", 4 [pid 363] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 306] <... openat resumed>) = 3 [pid 364] <... write resumed>) = 4 [pid 363] <... openat resumed>) = 3 [pid 362] ioctl(4, LOOP_SET_FD, 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 364] close(3 [pid 363] write(3, "1000", 4 [pid 362] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 366 attached [pid 364] <... close resumed>) = 0 [pid 363] <... write resumed>) = 4 [pid 362] close(4 [pid 306] close(3 [pid 364] memfd_create("syzkaller", 0 [pid 363] close(3 [pid 362] <... close resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 366] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 364] <... memfd_create resumed>) = 3 [pid 363] <... close resumed>) = 0 [pid 362] close(3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 364] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 365 attached ) = 0x7f7bfe3d8000 [pid 366] <... prctl resumed>) = 0 [pid 365] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 364] 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 363] memfd_create("syzkaller", 0 [pid 362] <... close resumed>) = 0 [pid 366] setpgid(0, 0 [pid 365] <... prctl resumed>) = 0 [pid 364] <... write resumed>) = 262144 [pid 363] <... memfd_create resumed>) = 3 [pid 362] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 367 [pid 366] <... setpgid resumed>) = 0 [pid 365] setpgid(0, 0 [pid 363] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 362] <... openat resumed>) = 3 ./strace-static-x86_64: Process 367 attached [pid 366] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 365] <... setpgid resumed>) = 0 [pid 363] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 362] ioctl(3, BLKSECDISCARD, [0, 0] [pid 365] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 364] munmap(0x7f7bfe3d8000, 262144 [pid 362] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 365] <... openat resumed>) = 3 [pid 364] <... munmap resumed>) = 0 [pid 362] exit_group(0 [pid 365] write(3, "1000", 4 [pid 364] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 362] <... exit_group resumed>) = ? [pid 365] <... write resumed>) = 4 [pid 364] <... openat resumed>) = 4 [pid 365] close(3 [pid 364] ioctl(4, LOOP_SET_FD, 3 [pid 365] <... close resumed>) = 0 [pid 364] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 365] memfd_create("syzkaller", 0 [pid 364] ioctl(4, LOOP_CLR_FD [pid 363] 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] +++ exited with 0 +++ [pid 366] <... openat resumed>) = 3 [pid 365] <... memfd_create resumed>) = 3 [pid 364] <... ioctl resumed>) = 0 [pid 365] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=362, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 366] write(3, "1000", 4 [pid 365] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 367] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 366] <... write resumed>) = 4 [pid 365] 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 363] <... write resumed>) = 262144 [pid 309] <... restart_syscall resumed>) = 0 [pid 367] <... prctl resumed>) = 0 [pid 366] close(3 [pid 365] <... write resumed>) = 262144 [pid 364] ioctl(4, LOOP_SET_FD, 3 [pid 363] munmap(0x7f7bfe3d8000, 262144 [pid 367] setpgid(0, 0 [pid 366] <... close resumed>) = 0 [pid 364] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 363] <... munmap resumed>) = 0 [pid 367] <... setpgid resumed>) = 0 [pid 366] memfd_create("syzkaller", 0 [pid 365] munmap(0x7f7bfe3d8000, 262144 [pid 364] close(4 [pid 363] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 366] <... memfd_create resumed>) = 3 [pid 365] <... munmap resumed>) = 0 [pid 364] <... close resumed>) = 0 [pid 363] <... openat resumed>) = 4 [pid 309] <... openat resumed>) = 3 [pid 367] <... openat resumed>) = 3 [pid 366] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 365] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 364] close(3 [pid 363] ioctl(4, LOOP_SET_FD, 3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 367] write(3, "1000", 4 [pid 366] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 365] <... openat resumed>) = 4 [pid 364] <... close resumed>) = 0 [pid 363] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] <... ioctl resumed>) = 0 [pid 367] <... write resumed>) = 4 [pid 365] ioctl(4, LOOP_SET_FD, 3 [pid 364] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] close(3 [pid 365] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 364] <... openat resumed>) = 3 [pid 309] <... close resumed>) = 0 [pid 365] ioctl(4, LOOP_CLR_FD [pid 364] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 367] close(3 [pid 366] 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 365] <... ioctl resumed>) = 0 [pid 364] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 363] ioctl(4, LOOP_CLR_FD [pid 367] <... close resumed>) = 0 [pid 364] exit_group(0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 368 [pid 364] <... exit_group resumed>) = ? [pid 367] memfd_create("syzkaller", 0 [pid 366] <... write resumed>) = 262144 [pid 364] +++ exited with 0 +++ [pid 363] <... ioctl resumed>) = 0 [pid 367] <... memfd_create resumed>) = 3 [pid 366] munmap(0x7f7bfe3d8000, 262144 [pid 365] ioctl(4, LOOP_SET_FD, 3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=364, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 367] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 366] <... munmap resumed>) = 0 [pid 365] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 367] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 366] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 365] close(4) = 0 [pid 365] close(3) = 0 [pid 367] 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 366] <... openat resumed>) = 4 [pid 365] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 365] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 365] exit_group(0) = ? [pid 367] <... write resumed>) = 262144 [pid 366] ioctl(4, LOOP_SET_FD, 3 [pid 365] +++ exited with 0 +++ [pid 363] ioctl(4, LOOP_SET_FD, 3 [pid 367] munmap(0x7f7bfe3d8000, 262144 [pid 366] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 363] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 367] <... munmap resumed>) = 0 [pid 363] close(4 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=365, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 366] ioctl(4, LOOP_CLR_FD [pid 367] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 366] <... ioctl resumed>) = 0 [pid 363] <... close resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 367] <... openat resumed>) = 4 [pid 363] close(3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 308] <... openat resumed>) = 3 ./strace-static-x86_64: Process 368 attached [pid 368] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 367] ioctl(4, LOOP_SET_FD, 3 [pid 363] <... close resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 368] <... prctl resumed>) = 0 [pid 367] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 363] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] close(3 [pid 308] <... ioctl resumed>) = 0 [pid 368] setpgid(0, 0 [pid 367] ioctl(4, LOOP_CLR_FD [pid 363] <... openat resumed>) = 3 [pid 310] <... close resumed>) = 0 [pid 308] close(3 [pid 368] <... setpgid resumed>) = 0 [pid 367] <... ioctl resumed>) = 0 [pid 363] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] <... close resumed>) = 0 [pid 368] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 366] ioctl(4, LOOP_SET_FD, 3 [pid 363] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 368] <... openat resumed>) = 3 [pid 366] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 363] exit_group(0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 368] write(3, "1000", 4 [pid 366] close(4 [pid 363] <... exit_group resumed>) = ? [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 369 [pid 368] <... write resumed>) = 4 [pid 368] close(3) = 0 [pid 366] <... close resumed>) = 0 [pid 368] memfd_create("syzkaller", 0) = 3 [pid 368] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 363] +++ exited with 0 +++ [pid 366] close(3 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 370 [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 [pid 367] ioctl(4, LOOP_SET_FD, 3 [pid 366] <... close resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=363, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 368] <... write resumed>) = 262144 [pid 367] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 366] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 367] close(4 [pid 366] <... openat resumed>) = 3 [pid 307] <... restart_syscall resumed>) = 0 [pid 367] <... close resumed>) = 0 [pid 366] ioctl(3, BLKSECDISCARD, [0, 0] [pid 367] close(3 [pid 366] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 368] munmap(0x7f7bfe3d8000, 262144 [pid 307] <... openat resumed>) = 3 [pid 368] <... munmap resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 368] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] close(3 [pid 368] <... openat resumed>) = 4 [pid 367] <... close resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 368] ioctl(4, LOOP_SET_FD, 3 [pid 367] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 366] exit_group(0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 368] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 367] <... openat resumed>) = 3 [pid 366] <... exit_group resumed>) = ? [pid 368] ioctl(4, LOOP_CLR_FD [pid 367] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 371 [pid 368] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 370 attached [pid 366] +++ exited with 0 +++ [pid 370] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 367] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=366, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 370] <... prctl resumed>) = 0 [pid 367] exit_group(0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 370] setpgid(0, 0 [pid 367] <... exit_group resumed>) = ? [pid 305] <... restart_syscall resumed>) = 0 [pid 370] <... setpgid resumed>) = 0 [pid 370] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 368] ioctl(4, LOOP_SET_FD, 3 [pid 370] <... openat resumed>) = 3 [pid 368] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 367] +++ exited with 0 +++ [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 370] write(3, "1000", 4 [pid 368] close(4 [pid 305] <... openat resumed>) = 3 [pid 370] <... write resumed>) = 4 [pid 368] <... close resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=367, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] ioctl(3, LOOP_CLR_FD [pid 370] close(3 [pid 368] close(3 [pid 305] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 371 attached ./strace-static-x86_64: Process 369 attached [pid 370] <... close resumed>) = 0 [pid 368] <... close resumed>) = 0 [pid 305] close(3 [pid 371] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 370] memfd_create("syzkaller", 0 [pid 369] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 368] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] <... close resumed>) = 0 [pid 371] <... prctl resumed>) = 0 [pid 370] <... memfd_create resumed>) = 3 [pid 369] <... prctl resumed>) = 0 [pid 368] <... openat resumed>) = 3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 372 attached [pid 371] setpgid(0, 0 [pid 370] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 369] setpgid(0, 0 [pid 368] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] <... openat resumed>) = 3 [pid 372] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 371] <... setpgid resumed>) = 0 [pid 370] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 369] <... setpgid resumed>) = 0 [pid 368] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] ioctl(3, LOOP_CLR_FD [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 372 [pid 372] <... prctl resumed>) = 0 [pid 371] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 370] 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 369] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 368] exit_group(0 [pid 306] <... ioctl resumed>) = 0 [pid 372] setpgid(0, 0 [pid 371] <... openat resumed>) = 3 [pid 370] <... write resumed>) = 262144 [pid 369] <... openat resumed>) = 3 [pid 368] <... exit_group resumed>) = ? [pid 306] close(3 [pid 372] <... setpgid resumed>) = 0 [pid 371] write(3, "1000", 4 [pid 370] munmap(0x7f7bfe3d8000, 262144 [pid 369] write(3, "1000", 4 [pid 368] +++ exited with 0 +++ [pid 372] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 371] <... write resumed>) = 4 [pid 370] <... munmap resumed>) = 0 [pid 369] <... write resumed>) = 4 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=368, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... close resumed>) = 0 [pid 372] <... openat resumed>) = 3 [pid 371] close(3 [pid 370] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 369] close(3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 372] write(3, "1000", 4 [pid 371] <... close resumed>) = 0 [pid 370] <... openat resumed>) = 4 [pid 369] <... close resumed>) = 0 [pid 370] ioctl(4, LOOP_SET_FD, 3 [pid 369] memfd_create("syzkaller", 0 [pid 372] <... write resumed>) = 4 [pid 370] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 369] <... memfd_create resumed>) = 3 [pid 372] close(3 [pid 371] memfd_create("syzkaller", 0 [pid 370] ioctl(4, LOOP_CLR_FD [pid 369] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 373 [pid 372] <... close resumed>) = 0 [pid 371] <... memfd_create resumed>) = 3 [pid 370] <... ioctl resumed>) = 0 [pid 369] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 372] memfd_create("syzkaller", 0 [pid 371] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 369] 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] <... memfd_create resumed>) = 3 [pid 371] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 369] <... write resumed>) = 262144 [pid 372] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 369] munmap(0x7f7bfe3d8000, 262144 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 369] <... munmap resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 370] ioctl(4, LOOP_SET_FD, 3 [pid 369] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 309] ioctl(3, LOOP_CLR_FD [pid 370] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 369] <... openat resumed>) = 4 [pid 309] <... ioctl resumed>) = 0 [pid 372] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 371] 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 370] close(4 [pid 369] ioctl(4, LOOP_SET_FD, 3 [pid 309] close(3 [pid 370] <... close resumed>) = 0 [pid 369] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] <... close resumed>) = 0 [pid 370] close(3 [pid 369] ioctl(4, LOOP_CLR_FD [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 372] 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 370] <... close resumed>) = 0 [pid 369] <... ioctl resumed>) = 0 [pid 370] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 374 [pid 370] <... openat resumed>) = 3 [pid 370] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 370] exit_group(0) = ? [pid 372] <... write resumed>) = 262144 [pid 371] <... write resumed>) = 262144 [pid 370] +++ exited with 0 +++ [pid 372] munmap(0x7f7bfe3d8000, 262144 [pid 371] munmap(0x7f7bfe3d8000, 262144 [pid 369] ioctl(4, LOOP_SET_FD, 3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=370, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 372] <... munmap resumed>) = 0 [pid 369] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 372] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 371] <... munmap resumed>) = 0 [pid 369] close(4 [pid 308] <... restart_syscall resumed>) = 0 [pid 372] <... openat resumed>) = 4 [pid 371] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 369] <... close resumed>) = 0 [pid 372] ioctl(4, LOOP_SET_FD, 3 [pid 371] <... openat resumed>) = 4 [pid 369] close(3 [pid 372] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 371] ioctl(4, LOOP_SET_FD, 3 [pid 369] <... close resumed>) = 0 ./strace-static-x86_64: Process 374 attached [pid 372] ioctl(4, LOOP_CLR_FD [pid 371] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 369] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 374] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 372] <... ioctl resumed>) = 0 [pid 371] ioctl(4, LOOP_CLR_FD [pid 369] <... openat resumed>) = 3 [pid 308] <... openat resumed>) = 3 [pid 374] <... prctl resumed>) = 0 [pid 371] <... ioctl resumed>) = 0 [pid 369] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 373 attached [pid 374] setpgid(0, 0 [pid 369] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] <... ioctl resumed>) = 0 [pid 374] <... setpgid resumed>) = 0 [pid 373] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 369] exit_group(0 [pid 308] close(3 [pid 373] <... prctl resumed>) = 0 [pid 369] <... exit_group resumed>) = ? [pid 374] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 373] setpgid(0, 0 [pid 369] +++ exited with 0 +++ [pid 308] <... close resumed>) = 0 [pid 374] <... openat resumed>) = 3 [pid 373] <... setpgid resumed>) = 0 [pid 372] ioctl(4, LOOP_SET_FD, 3 [pid 371] ioctl(4, LOOP_SET_FD, 3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=369, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 374] write(3, "1000", 4 [pid 373] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 372] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 371] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 373] <... openat resumed>) = 3 [pid 373] write(3, "1000", 4 [pid 372] close(4 [pid 371] close(4 [pid 374] <... write resumed>) = 4 [pid 374] close(3 [pid 373] <... write resumed>) = 4 [pid 372] <... close resumed>) = 0 [pid 371] <... close resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 375 [pid 374] <... close resumed>) = 0 [pid 372] close(3 [pid 371] close(3 [pid 310] <... openat resumed>) = 3 [pid 373] close(3) = 0 [pid 373] memfd_create("syzkaller", 0) = 3 [pid 372] <... close resumed>) = 0 [pid 373] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 374] memfd_create("syzkaller", 0 [pid 373] 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] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 371] <... close resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 374] <... memfd_create resumed>) = 3 [pid 373] <... write resumed>) = 262144 [pid 372] <... openat resumed>) = 3 [pid 371] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] <... ioctl resumed>) = 0 [pid 374] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 372] ioctl(3, BLKSECDISCARD, [0, 0] [pid 371] <... openat resumed>) = 3 [pid 310] close(3 [pid 374] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 372] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 371] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] <... close resumed>) = 0 [pid 373] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 373] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 373] ioctl(4, LOOP_SET_FD, 3 [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 373] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 372] exit_group(0 [pid 371] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 373] ioctl(4, LOOP_CLR_FD) = 0 [pid 371] exit_group(0./strace-static-x86_64: Process 375 attached [pid 372] <... exit_group resumed>) = ? [pid 371] <... exit_group resumed>) = ? [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 376 [pid 375] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 373] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 372] +++ exited with 0 +++ [pid 373] close(4 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=372, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 373] <... close resumed>) = 0 [pid 373] close(3) = 0 [pid 371] +++ exited with 0 +++ [pid 373] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 375] setpgid(0, 0 [pid 374] <... write resumed>) = 262144 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=371, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 375] <... setpgid resumed>) = 0 [pid 374] munmap(0x7f7bfe3d8000, 262144 [pid 373] <... openat resumed>) = 3 [pid 375] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 374] <... munmap resumed>) = 0 [pid 373] ioctl(3, BLKSECDISCARD, [0, 0] [pid 375] <... openat resumed>) = 3 [pid 374] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 373] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 375] write(3, "1000", 4 [pid 374] <... openat resumed>) = 4 [pid 373] exit_group(0 [pid 307] <... openat resumed>) = 3 [pid 305] <... openat resumed>) = 3 [pid 375] <... write resumed>) = 4 [pid 374] ioctl(4, LOOP_SET_FD, 3 [pid 373] <... exit_group resumed>) = ? [pid 307] ioctl(3, LOOP_CLR_FD [pid 305] ioctl(3, LOOP_CLR_FD [pid 375] close(3 [pid 374] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 373] +++ exited with 0 +++ [pid 307] <... ioctl resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 375] <... close resumed>) = 0 [pid 374] ioctl(4, LOOP_CLR_FD [pid 307] close(3 [pid 305] close(3 [pid 375] memfd_create("syzkaller", 0 [pid 374] <... ioctl resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=373, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 376 attached [pid 375] <... memfd_create resumed>) = 3 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 376] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 375] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 376] <... prctl resumed>) = 0 [pid 375] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 374] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 377 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 378 ./strace-static-x86_64: Process 377 attached [pid 376] setpgid(0, 0 [pid 375] 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 374] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 377] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 376] <... setpgid resumed>) = 0 [pid 375] <... write resumed>) = 262144 [pid 374] close(4 [pid 377] <... prctl resumed>) = 0 [pid 376] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 374] <... close resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 377] setpgid(0, 0 [pid 376] <... openat resumed>) = 3 [pid 375] munmap(0x7f7bfe3d8000, 262144 [pid 374] close(3 [pid 306] <... openat resumed>) = 3 [pid 376] write(3, "1000", 4 [pid 375] <... munmap resumed>) = 0 [pid 376] <... write resumed>) = 4 [pid 375] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 376] close(3 [pid 375] <... openat resumed>) = 4 [pid 376] <... close resumed>) = 0 [pid 375] ioctl(4, LOOP_SET_FD, 3 [pid 377] <... setpgid resumed>) = 0 [pid 376] memfd_create("syzkaller", 0 [pid 375] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 374] <... close resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 377] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 376] <... memfd_create resumed>) = 3 [pid 375] ioctl(4, LOOP_CLR_FD [pid 374] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 306] <... ioctl resumed>) = 0 [pid 377] <... openat resumed>) = 3 [pid 376] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 375] <... ioctl resumed>) = 0 [pid 374] <... openat resumed>) = 3 [pid 306] close(3 [pid 377] write(3, "1000", 4 [pid 376] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 374] ioctl(3, BLKSECDISCARD, [0, 0] [pid 377] <... write resumed>) = 4 [pid 376] 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 374] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] <... close resumed>) = 0 [pid 377] close(3 [pid 376] <... write resumed>) = 262144 [pid 374] exit_group(0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 377] <... close resumed>) = 0 [pid 376] munmap(0x7f7bfe3d8000, 262144 [pid 375] ioctl(4, LOOP_SET_FD, 3 [pid 374] <... exit_group resumed>) = ? [pid 376] <... munmap resumed>) = 0 [pid 375] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 377] memfd_create("syzkaller", 0 [pid 376] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 375] close(4./strace-static-x86_64: Process 378 attached [pid 376] <... openat resumed>) = 4 [pid 375] <... close resumed>) = 0 [pid 378] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 376] ioctl(4, LOOP_SET_FD, 3 [pid 375] close(3 [pid 374] +++ exited with 0 +++ [pid 378] <... prctl resumed>) = 0 [pid 377] <... memfd_create resumed>) = 3 [pid 376] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 375] <... close resumed>) = 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=374, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 379 [pid 378] setpgid(0, 0 [pid 376] ioctl(4, LOOP_CLR_FD [pid 375] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 378] <... setpgid resumed>) = 0 [pid 377] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 376] <... ioctl resumed>) = 0 [pid 375] <... openat resumed>) = 3 [pid 378] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 377] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 375] ioctl(3, BLKSECDISCARD, [0, 0] [pid 378] <... openat resumed>) = 3 [pid 375] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 378] write(3, "1000", 4 [pid 375] exit_group(0 [pid 378] <... write resumed>) = 4 [pid 375] <... exit_group resumed>) = ? [pid 378] close(3 [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 375] +++ exited with 0 +++ [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 378] <... close resumed>) = 0 [pid 376] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... openat resumed>) = 3 [pid 378] memfd_create("syzkaller", 0 [pid 376] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] ioctl(3, LOOP_CLR_FD [pid 378] <... memfd_create resumed>) = 3 [pid 376] close(4 [pid 309] <... ioctl resumed>) = 0 [pid 378] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 377] <... write resumed>) = 262144 [pid 376] <... close resumed>) = 0 [pid 309] close(3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=375, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 378] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 377] munmap(0x7f7bfe3d8000, 262144 [pid 376] close(3 [pid 309] <... close resumed>) = 0 [pid 378] 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 377] <... munmap resumed>) = 0 [pid 376] <... close resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 378] <... write resumed>) = 262144 [pid 377] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 376] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 377] <... openat resumed>) = 4 [pid 376] <... openat resumed>) = 3 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 380 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 377] ioctl(4, LOOP_SET_FD, 3 [pid 376] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] <... openat resumed>) = 3 ./strace-static-x86_64: Process 380 attached [pid 378] munmap(0x7f7bfe3d8000, 262144 [pid 377] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 376] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] ioctl(3, LOOP_CLR_FD [pid 380] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 378] <... munmap resumed>) = 0 [pid 377] ioctl(4, LOOP_CLR_FD [pid 376] exit_group(0 [pid 308] <... ioctl resumed>) = 0 [pid 380] <... prctl resumed>) = 0 [pid 378] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 377] <... ioctl resumed>) = 0 [pid 376] <... exit_group resumed>) = ? [pid 308] close(3./strace-static-x86_64: Process 379 attached [pid 380] setpgid(0, 0 [pid 378] <... openat resumed>) = 4 [pid 376] +++ exited with 0 +++ [pid 378] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 378] ioctl(4, LOOP_CLR_FD) = 0 [pid 378] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 378] close(4) = 0 [pid 378] close(3) = 0 [pid 378] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 378] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 378] exit_group(0) = ? [pid 378] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=378, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 380] <... setpgid resumed>) = 0 [pid 379] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=376, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] <... close resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 380] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 379] <... prctl resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... restart_syscall resumed>) = 0 [pid 380] <... openat resumed>) = 3 [pid 379] setpgid(0, 0 [pid 377] ioctl(4, LOOP_SET_FD, 3 [pid 380] write(3, "1000", 4 [pid 379] <... setpgid resumed>) = 0 [pid 377] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 381 [pid 380] <... write resumed>) = 4 [pid 379] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 377] close(4 [pid 310] <... openat resumed>) = 3 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 380] close(3 [pid 379] <... openat resumed>) = 3 [pid 377] <... close resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 380] <... close resumed>) = 0 [pid 379] write(3, "1000", 4 [pid 377] close(3 [pid 310] <... ioctl resumed>) = 0 [pid 305] <... openat resumed>) = 3 ./strace-static-x86_64: Process 381 attached [pid 380] memfd_create("syzkaller", 0 [pid 379] <... write resumed>) = 4 [pid 377] <... close resumed>) = 0 [pid 310] close(3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 381] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 380] <... memfd_create resumed>) = 3 [pid 379] close(3 [pid 377] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] <... close resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 380] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 379] <... close resumed>) = 0 [pid 377] <... openat resumed>) = 3 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 381] <... prctl resumed>) = 0 [pid 305] close(3 [pid 381] setpgid(0, 0 [pid 380] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 379] memfd_create("syzkaller", 0 [pid 377] ioctl(3, BLKSECDISCARD, [0, 0] [pid 305] <... close resumed>) = 0 [pid 381] <... setpgid resumed>) = 0 [pid 380] 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 379] <... memfd_create resumed>) = 3 [pid 377] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 382 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 382 attached [pid 381] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 380] <... write resumed>) = 262144 [pid 379] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 377] exit_group(0 [pid 380] munmap(0x7f7bfe3d8000, 262144 [pid 379] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 377] <... exit_group resumed>) = ? [pid 382] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 381] <... openat resumed>) = 3 [pid 380] <... munmap resumed>) = 0 [pid 379] 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 377] +++ exited with 0 +++ [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 383 [pid 382] <... prctl resumed>) = 0 [pid 381] write(3, "1000", 4 [pid 380] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 379] <... write resumed>) = 262144 [pid 382] setpgid(0, 0 [pid 381] <... write resumed>) = 4 [pid 380] <... openat resumed>) = 4 [pid 379] munmap(0x7f7bfe3d8000, 262144 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=377, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 382] <... setpgid resumed>) = 0 [pid 381] close(3 [pid 380] ioctl(4, LOOP_SET_FD, 3 [pid 379] <... munmap resumed>) = 0 [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 382] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 381] <... close resumed>) = 0 [pid 380] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 379] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 307] <... restart_syscall resumed>) = 0 [pid 382] <... openat resumed>) = 3 [pid 381] memfd_create("syzkaller", 0 [pid 380] ioctl(4, LOOP_CLR_FD [pid 379] <... openat resumed>) = 4 [pid 382] write(3, "1000", 4 [pid 381] <... memfd_create resumed>) = 3 [pid 380] <... ioctl resumed>) = 0 [pid 382] <... write resumed>) = 4 [pid 381] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 379] ioctl(4, LOOP_SET_FD, 3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 382] close(3 [pid 381] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 379] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 382] <... close resumed>) = 0 [pid 379] ioctl(4, LOOP_CLR_FD [pid 307] <... openat resumed>) = 3 [pid 379] <... ioctl resumed>) = 0 [pid 380] ioctl(4, LOOP_SET_FD, 3 [pid 382] memfd_create("syzkaller", 0 [pid 381] 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 380] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] ioctl(3, LOOP_CLR_FD [pid 382] <... memfd_create resumed>) = 3 [pid 380] close(4) = 0 [pid 380] close(3 [pid 382] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 381] <... write resumed>) = 262144 [pid 380] <... close resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 382] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 381] munmap(0x7f7bfe3d8000, 262144 [pid 380] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 379] ioctl(4, LOOP_SET_FD, 3 [pid 307] close(3 [pid 380] <... openat resumed>) = 3 [pid 379] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 380] ioctl(3, BLKSECDISCARD, [0, 0] [pid 379] close(4 [pid 380] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 379] <... close resumed>) = 0 [pid 382] 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 380] exit_group(0 [pid 379] close(3 [pid 307] <... close resumed>) = 0 [pid 382] <... write resumed>) = 262144 [pid 381] <... munmap resumed>) = 0 [pid 380] <... exit_group resumed>) = ? [pid 379] <... close resumed>) = 0 [pid 382] munmap(0x7f7bfe3d8000, 262144 [pid 381] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 380] +++ exited with 0 +++ [pid 379] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 382] <... munmap resumed>) = 0 [pid 381] <... openat resumed>) = 4 [pid 379] <... openat resumed>) = 3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=380, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 383 attached [pid 382] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 381] ioctl(4, LOOP_SET_FD, 3 [pid 379] ioctl(3, BLKSECDISCARD, [0, 0] [pid 383] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 382] <... openat resumed>) = 4 [pid 381] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 379] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 384 [pid 383] <... prctl resumed>) = 0 [pid 382] ioctl(4, LOOP_SET_FD, 3 [pid 381] ioctl(4, LOOP_CLR_FD [pid 379] exit_group(0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 383] setpgid(0, 0 [pid 382] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 381] <... ioctl resumed>) = 0 [pid 379] <... exit_group resumed>) = ? [pid 309] <... openat resumed>) = 3 [pid 383] <... setpgid resumed>) = 0 [pid 382] ioctl(4, LOOP_CLR_FD [pid 379] +++ exited with 0 +++ [pid 309] ioctl(3, LOOP_CLR_FD [pid 383] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 382] <... ioctl resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 384 attached [pid 383] <... openat resumed>) = 3 [pid 309] close(3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=379, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 384] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 383] write(3, "1000", 4 [pid 381] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... close resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 384] <... prctl resumed>) = 0 [pid 383] <... write resumed>) = 4 [pid 381] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] <... openat resumed>) = 3 [pid 384] setpgid(0, 0 [pid 383] close(3 [pid 382] ioctl(4, LOOP_SET_FD, 3 [pid 381] close(4 [pid 306] ioctl(3, LOOP_CLR_FD [pid 384] <... setpgid resumed>) = 0 [pid 383] <... close resumed>) = 0 [pid 382] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 381] <... close resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 384] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 383] memfd_create("syzkaller", 0 [pid 382] close(4 [pid 381] close(3 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 385 [pid 306] close(3 [pid 383] <... memfd_create resumed>) = 3 [pid 382] <... close resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 383] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 384] <... openat resumed>) = 3 [pid 383] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 382] close(3 [pid 381] <... close resumed>) = 0 [pid 384] write(3, "1000", 4 [pid 383] 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 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 386 ./strace-static-x86_64: Process 385 attached [pid 384] <... write resumed>) = 4 [pid 383] <... write resumed>) = 262144 [pid 382] <... close resumed>) = 0 [pid 381] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 385] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 384] close(3 [pid 383] munmap(0x7f7bfe3d8000, 262144 [pid 382] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 381] <... openat resumed>) = 3 ./strace-static-x86_64: Process 386 attached [pid 385] <... prctl resumed>) = 0 [pid 384] <... close resumed>) = 0 [pid 383] <... munmap resumed>) = 0 [pid 382] <... openat resumed>) = 3 [pid 381] ioctl(3, BLKSECDISCARD, [0, 0] [pid 385] setpgid(0, 0 [pid 384] memfd_create("syzkaller", 0 [pid 386] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 383] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 382] ioctl(3, BLKSECDISCARD, [0, 0] [pid 381] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 386] <... prctl resumed>) = 0 [pid 385] <... setpgid resumed>) = 0 [pid 384] <... memfd_create resumed>) = 3 [pid 383] <... openat resumed>) = 4 [pid 382] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 381] exit_group(0 [pid 386] setpgid(0, 0 [pid 385] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 384] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 383] ioctl(4, LOOP_SET_FD, 3 [pid 382] exit_group(0 [pid 381] <... exit_group resumed>) = ? [pid 384] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 383] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 382] <... exit_group resumed>) = ? [pid 383] ioctl(4, LOOP_CLR_FD) = 0 [pid 381] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=381, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 382] +++ exited with 0 +++ [pid 308] <... restart_syscall resumed>) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=382, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 383] ioctl(4, LOOP_SET_FD, 3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 386] <... setpgid resumed>) = 0 [pid 385] <... openat resumed>) = 3 [pid 384] 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 383] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 308] <... openat resumed>) = 3 [pid 383] close(4 [pid 310] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 383] <... close resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 308] <... ioctl resumed>) = 0 [pid 383] close(3 [pid 310] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 386] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 385] write(3, "1000", 4 [pid 384] <... write resumed>) = 262144 [pid 383] <... close resumed>) = 0 [pid 310] close(3 [pid 308] <... close resumed>) = 0 [pid 386] <... openat resumed>) = 3 [pid 385] <... write resumed>) = 4 [pid 384] munmap(0x7f7bfe3d8000, 262144 [pid 383] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] <... close resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 386] write(3, "1000", 4 [pid 385] close(3 [pid 384] <... munmap resumed>) = 0 [pid 383] <... openat resumed>) = 3 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 386] <... write resumed>) = 4 [pid 385] <... close resumed>) = 0 [pid 384] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 383] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 387 [pid 386] close(3 [pid 385] memfd_create("syzkaller", 0 [pid 384] <... openat resumed>) = 4 [pid 383] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 388 [pid 386] <... close resumed>) = 0 [pid 385] <... memfd_create resumed>) = 3 [pid 384] ioctl(4, LOOP_SET_FD, 3 [pid 383] exit_group(0 [pid 386] memfd_create("syzkaller", 0 [pid 385] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 384] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 383] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 387 attached ./strace-static-x86_64: Process 388 attached [pid 386] <... memfd_create resumed>) = 3 [pid 385] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 384] ioctl(4, LOOP_CLR_FD [pid 383] +++ exited with 0 +++ [pid 387] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 386] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 387] <... prctl resumed>) = 0 [pid 387] setpgid(0, 0) = 0 [pid 387] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 388] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 387] <... openat resumed>) = 3 [pid 386] <... mmap resumed>) = 0x7f7bfe3d8000 [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] <... ioctl resumed>) = 0 [pid 388] <... prctl resumed>) = 0 [pid 387] write(3, "1000", 4) = 4 [pid 387] close(3) = 0 [pid 387] memfd_create("syzkaller", 0 [pid 386] 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 388] setpgid(0, 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=383, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 387] <... memfd_create resumed>) = 3 [pid 387] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 388] <... setpgid resumed>) = 0 [pid 387] 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 385] <... write resumed>) = 262144 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 388] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 384] ioctl(4, LOOP_SET_FD, 3 [pid 388] <... openat resumed>) = 3 [pid 386] <... write resumed>) = 262144 [pid 385] munmap(0x7f7bfe3d8000, 262144 [pid 384] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... openat resumed>) = 3 [pid 388] write(3, "1000", 4 [pid 386] munmap(0x7f7bfe3d8000, 262144 [pid 385] <... munmap resumed>) = 0 [pid 384] close(4 [pid 305] ioctl(3, LOOP_CLR_FD [pid 388] <... write resumed>) = 4 [pid 386] <... munmap resumed>) = 0 [pid 385] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 384] <... close resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 388] close(3 [pid 386] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 385] <... openat resumed>) = 4 [pid 384] close(3 [pid 305] close(3 [pid 388] <... close resumed>) = 0 [pid 387] <... write resumed>) = 262144 [pid 386] <... openat resumed>) = 4 [pid 387] munmap(0x7f7bfe3d8000, 262144 [pid 388] memfd_create("syzkaller", 0 [pid 387] <... munmap resumed>) = 0 [pid 386] ioctl(4, LOOP_SET_FD, 3 [pid 385] ioctl(4, LOOP_SET_FD, 3 [pid 384] <... close resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 388] <... memfd_create resumed>) = 3 [pid 387] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 386] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 385] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 384] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 388] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 387] <... openat resumed>) = 4 [pid 386] ioctl(4, LOOP_CLR_FD [pid 385] ioctl(4, LOOP_CLR_FD [pid 384] <... openat resumed>) = 3 [pid 387] ioctl(4, LOOP_SET_FD, 3 [pid 388] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 387] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 386] <... ioctl resumed>) = 0 [pid 385] <... ioctl resumed>) = 0 [pid 384] ioctl(3, BLKSECDISCARD, [0, 0] [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 389 [pid 387] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 389 attached [pid 388] 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] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 387] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 387] close(4 [pid 388] <... write resumed>) = 262144 [pid 387] <... close resumed>) = 0 [pid 388] munmap(0x7f7bfe3d8000, 262144 [pid 384] exit_group(0) = ? [pid 387] close(3 [pid 388] <... munmap resumed>) = 0 [pid 387] <... close resumed>) = 0 [pid 384] +++ exited with 0 +++ [pid 388] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 387] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 386] ioctl(4, LOOP_SET_FD, 3 [pid 385] ioctl(4, LOOP_SET_FD, 3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=384, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 388] <... openat resumed>) = 4 [pid 387] <... openat resumed>) = 3 [pid 386] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 385] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 388] ioctl(4, LOOP_SET_FD, 3 [pid 387] ioctl(3, BLKSECDISCARD, [0, 0] [pid 386] close(4 [pid 385] close(4 [pid 388] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 387] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 386] <... close resumed>) = 0 [pid 385] <... close resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 388] ioctl(4, LOOP_CLR_FD [pid 386] close(3 [pid 385] close(3 [pid 307] <... openat resumed>) = 3 [pid 387] exit_group(0) = ? [pid 387] +++ exited with 0 +++ [pid 386] <... close resumed>) = 0 [pid 388] <... ioctl resumed>) = 0 [pid 386] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 385] <... close resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=387, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] ioctl(3, LOOP_CLR_FD [pid 386] <... openat resumed>) = 3 [pid 385] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 307] <... ioctl resumed>) = 0 [pid 386] ioctl(3, BLKSECDISCARD, [0, 0] [pid 385] <... openat resumed>) = 3 [pid 307] close(3 [pid 386] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 385] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 307] <... close resumed>) = 0 [pid 388] ioctl(4, LOOP_SET_FD, 3 [pid 386] exit_group(0 [pid 385] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] <... openat resumed>) = 3 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 388] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 386] <... exit_group resumed>) = ? [pid 385] exit_group(0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 388] close(4 [pid 308] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 389] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 388] <... close resumed>) = 0 [pid 386] +++ exited with 0 +++ [pid 385] <... exit_group resumed>) = ? [pid 308] <... close resumed>) = 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 390 [pid 389] <... prctl resumed>) = 0 [pid 388] close(3 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 389] setpgid(0, 0 [pid 385] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=386, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 389] <... setpgid resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 391 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 389] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 388] <... close resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 389] <... openat resumed>) = 3 [pid 388] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=385, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 389] write(3, "1000", 4 [pid 388] <... openat resumed>) = 3 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 389] <... write resumed>) = 4 [pid 388] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] <... openat resumed>) = 3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 389] close(3 [pid 388] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] ioctl(3, LOOP_CLR_FD [pid 306] <... openat resumed>) = 3 [pid 389] <... close resumed>) = 0 [pid 388] exit_group(0 [pid 309] <... ioctl resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 389] memfd_create("syzkaller", 0 [pid 388] <... exit_group resumed>) = ? [pid 309] close(3 [pid 306] <... ioctl resumed>) = 0 [pid 389] <... memfd_create resumed>) = 3 [pid 306] close(3 [pid 389] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 388] +++ exited with 0 +++ [pid 309] <... close resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 389] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=388, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 390 attached [pid 389] 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 310] restart_syscall(<... resuming interrupted clone ...> [pid 390] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 389] <... write resumed>) = 262144 [pid 310] <... restart_syscall resumed>) = 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 392 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 393 [pid 390] <... prctl resumed>) = 0 [pid 390] setpgid(0, 0 [pid 389] munmap(0x7f7bfe3d8000, 262144./strace-static-x86_64: Process 393 attached [pid 390] <... setpgid resumed>) = 0 [pid 389] <... munmap resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 393] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 390] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 389] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 310] <... openat resumed>) = 3 ./strace-static-x86_64: Process 392 attached [pid 393] <... prctl resumed>) = 0 [pid 390] <... openat resumed>) = 3 [pid 389] <... openat resumed>) = 4 [pid 310] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 391 attached [pid 393] setpgid(0, 0 [pid 392] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 390] write(3, "1000", 4 [pid 389] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... ioctl resumed>) = 0 [pid 393] <... setpgid resumed>) = 0 [pid 392] <... prctl resumed>) = 0 [pid 391] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 390] <... write resumed>) = 4 [pid 389] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] close(3 [pid 393] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 392] setpgid(0, 0 [pid 391] <... prctl resumed>) = 0 [pid 390] close(3 [pid 389] ioctl(4, LOOP_CLR_FD [pid 310] <... close resumed>) = 0 [pid 393] <... openat resumed>) = 3 [pid 392] <... setpgid resumed>) = 0 [pid 391] setpgid(0, 0 [pid 390] <... close resumed>) = 0 [pid 389] <... ioctl resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 393] write(3, "1000", 4 [pid 392] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 391] <... setpgid resumed>) = 0 [pid 390] memfd_create("syzkaller", 0 [pid 393] <... write resumed>) = 4 [pid 392] <... openat resumed>) = 3 [pid 391] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 390] <... memfd_create resumed>) = 3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 394 [pid 393] close(3 [pid 392] write(3, "1000", 4 [pid 391] <... openat resumed>) = 3 [pid 390] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 393] <... close resumed>) = 0 [pid 392] <... write resumed>) = 4 [pid 391] write(3, "1000", 4 [pid 390] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 393] memfd_create("syzkaller", 0 [pid 391] <... write resumed>) = 4 [pid 389] ioctl(4, LOOP_SET_FD, 3 [pid 391] close(3 [pid 389] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 391] <... close resumed>) = 0 [pid 389] close(4 [pid 393] <... memfd_create resumed>) = 3 [pid 392] close(3 [pid 391] memfd_create("syzkaller", 0 [pid 390] 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 389] <... close resumed>) = 0 [pid 393] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 392] <... close resumed>) = 0 [pid 391] <... memfd_create resumed>) = 3 [pid 389] close(3 [pid 393] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 392] memfd_create("syzkaller", 0 [pid 391] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 390] <... write resumed>) = 262144 [pid 389] <... close resumed>) = 0 [pid 392] <... memfd_create resumed>) = 3 [pid 391] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 390] munmap(0x7f7bfe3d8000, 262144 [pid 389] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000./strace-static-x86_64: Process 394 attached [pid 393] 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 392] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 391] 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 390] <... munmap resumed>) = 0 [pid 389] <... openat resumed>) = 3 [pid 394] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 393] <... write resumed>) = 262144 [pid 392] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 391] <... write resumed>) = 262144 [pid 390] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 389] ioctl(3, BLKSECDISCARD, [0, 0] [pid 394] <... prctl resumed>) = 0 [pid 393] munmap(0x7f7bfe3d8000, 262144 [pid 391] munmap(0x7f7bfe3d8000, 262144 [pid 389] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 391] <... munmap resumed>) = 0 [pid 389] exit_group(0 [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 391] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 389] <... exit_group resumed>) = ? [pid 393] <... munmap resumed>) = 0 [pid 391] <... openat resumed>) = 4 [pid 390] <... openat resumed>) = 4 [pid 389] +++ exited with 0 +++ [pid 394] setpgid(0, 0 [pid 393] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 392] <... write resumed>) = 262144 [pid 391] ioctl(4, LOOP_SET_FD, 3 [pid 390] ioctl(4, LOOP_SET_FD, 3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=389, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 394] <... setpgid resumed>) = 0 [pid 393] <... openat resumed>) = 4 [pid 392] munmap(0x7f7bfe3d8000, 262144 [pid 391] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 390] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 393] ioctl(4, LOOP_SET_FD, 3 [pid 392] <... munmap resumed>) = 0 [pid 391] ioctl(4, LOOP_CLR_FD [pid 390] ioctl(4, LOOP_CLR_FD [pid 394] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 393] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 392] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 391] <... ioctl resumed>) = 0 [pid 390] <... ioctl resumed>) = 0 [pid 394] <... openat resumed>) = 3 [pid 393] ioctl(4, LOOP_CLR_FD [pid 392] <... openat resumed>) = 4 [pid 394] write(3, "1000", 4 [pid 393] <... ioctl resumed>) = 0 [pid 392] ioctl(4, LOOP_SET_FD, 3 [pid 394] <... write resumed>) = 4 [pid 392] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 394] close(3 [pid 392] ioctl(4, LOOP_CLR_FD [pid 394] <... close resumed>) = 0 [pid 392] <... ioctl resumed>) = 0 [pid 391] ioctl(4, LOOP_SET_FD, 3 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 394] memfd_create("syzkaller", 0 [pid 393] ioctl(4, LOOP_SET_FD, 3 [pid 391] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 390] ioctl(4, LOOP_SET_FD, 3 [pid 394] <... memfd_create resumed>) = 3 [pid 393] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 391] close(4 [pid 390] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... openat resumed>) = 3 [pid 394] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 393] close(4 [pid 391] <... close resumed>) = 0 [pid 390] close(4 [pid 305] ioctl(3, LOOP_CLR_FD [pid 394] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 393] <... close resumed>) = 0 [pid 392] ioctl(4, LOOP_SET_FD, 3 [pid 391] close(3 [pid 390] <... close resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 394] 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 393] close(3 [pid 392] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 391] <... close resumed>) = 0 [pid 390] close(3 [pid 305] close(3 [pid 391] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 394] <... write resumed>) = 262144 [pid 391] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 391] exit_group(0 [pid 393] <... close resumed>) = 0 [pid 392] close(4 [pid 391] <... exit_group resumed>) = ? [pid 394] munmap(0x7f7bfe3d8000, 262144 [pid 393] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 392] <... close resumed>) = 0 [pid 391] +++ exited with 0 +++ [pid 390] <... close resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 394] <... munmap resumed>) = 0 [pid 393] <... openat resumed>) = 3 [pid 392] close(3 [pid 390] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 394] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 393] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=391, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 392] <... close resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 390] <... openat resumed>) = 3 [pid 308] <... openat resumed>) = 3 [pid 394] <... openat resumed>) = 4 [pid 393] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 392] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 390] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] ioctl(3, LOOP_CLR_FD [pid 394] ioctl(4, LOOP_SET_FD, 3 [pid 393] exit_group(0 [pid 392] <... openat resumed>) = 3 [pid 390] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] <... ioctl resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 395 [pid 394] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 393] <... exit_group resumed>) = ? [pid 392] ioctl(3, BLKSECDISCARD, [0, 0] [pid 390] exit_group(0 [pid 308] close(3 [pid 394] ioctl(4, LOOP_CLR_FD [pid 393] +++ exited with 0 +++ [pid 308] <... close resumed>) = 0 [pid 394] <... ioctl resumed>) = 0 [pid 392] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 390] <... exit_group resumed>) = ? [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 392] exit_group(0 [pid 390] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=393, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 392] <... exit_group resumed>) = ? [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 396 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=390, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 392] +++ exited with 0 +++ [pid 306] <... openat resumed>) = 3 [pid 394] ioctl(4, LOOP_SET_FD, 3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=392, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] ioctl(3, LOOP_CLR_FD [pid 394] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 306] <... ioctl resumed>) = 0 [pid 394] close(4 [pid 309] <... restart_syscall resumed>) = 0 [pid 306] close(3 [pid 394] <... close resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 394] close(3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 397 [pid 394] <... close resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR./strace-static-x86_64: Process 396 attached [pid 394] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] <... openat resumed>) = 3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR./strace-static-x86_64: Process 395 attached [pid 396] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 394] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 307] <... openat resumed>) = 3 [pid 396] <... prctl resumed>) = 0 [pid 395] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 394] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] <... ioctl resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 396] setpgid(0, 0 [pid 395] <... prctl resumed>) = 0 [pid 394] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] close(3 [pid 307] <... ioctl resumed>) = 0 [pid 396] <... setpgid resumed>) = 0 [pid 395] setpgid(0, 0 [pid 394] exit_group(0 [pid 309] <... close resumed>) = 0 [pid 307] close(3 [pid 396] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 395] <... setpgid resumed>) = 0 [pid 394] <... exit_group resumed>) = ? [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] <... close resumed>) = 0 [pid 395] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 394] +++ exited with 0 +++ [pid 395] write(3, "1000", 4 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=394, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 395] <... write resumed>) = 4 [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 397 attached [pid 396] <... openat resumed>) = 3 [pid 395] close(3 [pid 310] <... restart_syscall resumed>) = 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 398 [pid 397] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 396] write(3, "1000", 4 [pid 395] <... close resumed>) = 0 [pid 397] <... prctl resumed>) = 0 [pid 396] <... write resumed>) = 4 [pid 395] memfd_create("syzkaller", 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 399 [pid 397] setpgid(0, 0 [pid 396] close(3 [pid 395] <... memfd_create resumed>) = 3 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 397] <... setpgid resumed>) = 0 [pid 396] <... close resumed>) = 0 [pid 395] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 310] <... openat resumed>) = 3 [pid 397] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 396] memfd_create("syzkaller", 0 [pid 395] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 310] ioctl(3, LOOP_CLR_FD [pid 397] <... openat resumed>) = 3 [pid 396] <... memfd_create resumed>) = 3 [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 310] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 399 attached [pid 397] write(3, "1000", 4 [pid 396] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 395] <... write resumed>) = 262144 [pid 310] close(3 [pid 399] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 397] <... write resumed>) = 4 [pid 396] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 395] munmap(0x7f7bfe3d8000, 262144 [pid 310] <... close resumed>) = 0 [pid 399] <... prctl resumed>) = 0 [pid 397] close(3 [pid 395] <... munmap resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 398 attached [pid 399] setpgid(0, 0 [pid 397] <... close resumed>) = 0 [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 395] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 399] <... setpgid resumed>) = 0 [pid 398] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 397] memfd_create("syzkaller", 0 [pid 395] <... openat resumed>) = 4 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 400 [pid 398] <... prctl resumed>) = 0 [pid 395] ioctl(4, LOOP_SET_FD, 3 [pid 398] setpgid(0, 0 [pid 397] <... memfd_create resumed>) = 3 [pid 399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 396] <... write resumed>) = 262144 [pid 395] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 399] <... openat resumed>) = 3 [pid 398] <... setpgid resumed>) = 0 [pid 397] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 396] munmap(0x7f7bfe3d8000, 262144 [pid 395] ioctl(4, LOOP_CLR_FD [pid 399] write(3, "1000", 4 [pid 398] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 397] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 396] <... munmap resumed>) = 0 [pid 395] <... ioctl resumed>) = 0 [pid 399] <... write resumed>) = 4 [pid 398] <... openat resumed>) = 3 [pid 398] write(3, "1000", 4) = 4 [pid 399] close(3 [pid 398] close(3 [pid 397] 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 396] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 399] <... close resumed>) = 0 [pid 398] <... close resumed>) = 0 [pid 398] memfd_create("syzkaller", 0 [pid 395] ioctl(4, LOOP_SET_FD, 3 [pid 398] <... memfd_create resumed>) = 3 [pid 397] <... write resumed>) = 262144 [pid 396] <... openat resumed>) = 4 [pid 395] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 399] memfd_create("syzkaller", 0 [pid 398] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 397] munmap(0x7f7bfe3d8000, 262144 [pid 396] ioctl(4, LOOP_SET_FD, 3 [pid 395] close(4 [pid 399] <... memfd_create resumed>) = 3 ./strace-static-x86_64: Process 400 attached [pid 399] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 398] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 397] <... munmap resumed>) = 0 [pid 396] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 395] <... close resumed>) = 0 [pid 400] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 399] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 398] 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 397] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 396] ioctl(4, LOOP_CLR_FD [pid 395] close(3 [pid 400] <... prctl resumed>) = 0 [pid 399] 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 398] <... write resumed>) = 262144 [pid 397] <... openat resumed>) = 4 [pid 396] <... ioctl resumed>) = 0 [pid 395] <... close resumed>) = 0 [pid 400] setpgid(0, 0 [pid 398] munmap(0x7f7bfe3d8000, 262144 [pid 395] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 399] <... write resumed>) = 262144 [pid 398] <... munmap resumed>) = 0 [pid 395] <... openat resumed>) = 3 [pid 397] ioctl(4, LOOP_SET_FD, 3 [pid 400] <... setpgid resumed>) = 0 [pid 399] munmap(0x7f7bfe3d8000, 262144 [pid 398] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 397] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 395] ioctl(3, BLKSECDISCARD, [0, 0] [pid 400] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 399] <... munmap resumed>) = 0 [pid 398] <... openat resumed>) = 4 [pid 397] ioctl(4, LOOP_CLR_FD [pid 395] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 400] <... openat resumed>) = 3 [pid 399] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 398] ioctl(4, LOOP_SET_FD, 3 [pid 397] <... ioctl resumed>) = 0 [pid 395] exit_group(0 [pid 400] write(3, "1000", 4 [pid 399] <... openat resumed>) = 4 [pid 398] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 396] ioctl(4, LOOP_SET_FD, 3 [pid 395] <... exit_group resumed>) = ? [pid 400] <... write resumed>) = 4 [pid 399] ioctl(4, LOOP_SET_FD, 3 [pid 398] ioctl(4, LOOP_CLR_FD [pid 396] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 395] +++ exited with 0 +++ [pid 398] <... ioctl resumed>) = 0 [pid 398] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 399] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 398] close(4 [pid 396] close(4 [pid 398] <... close resumed>) = 0 [pid 398] close(3 [pid 400] close(3 [pid 399] ioctl(4, LOOP_CLR_FD [pid 398] <... close resumed>) = 0 [pid 397] ioctl(4, LOOP_SET_FD, 3 [pid 396] <... close resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=395, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 400] <... close resumed>) = 0 [pid 399] <... ioctl resumed>) = 0 [pid 398] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 397] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 396] close(3 [pid 400] memfd_create("syzkaller", 0 [pid 398] <... openat resumed>) = 3 [pid 397] close(4 [pid 398] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 398] exit_group(0) = ? [pid 400] <... memfd_create resumed>) = 3 [pid 398] +++ exited with 0 +++ [pid 397] <... close resumed>) = 0 [pid 396] <... close resumed>) = 0 [pid 400] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 397] close(3 [pid 396] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 400] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 397] <... close resumed>) = 0 [pid 396] <... openat resumed>) = 3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=398, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 400] 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 399] ioctl(4, LOOP_SET_FD, 3 [pid 397] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 396] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 305] <... openat resumed>) = 3 [pid 400] <... write resumed>) = 262144 [pid 399] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 397] <... openat resumed>) = 3 [pid 396] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] <... restart_syscall resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 400] munmap(0x7f7bfe3d8000, 262144 [pid 399] close(4 [pid 397] ioctl(3, BLKSECDISCARD, [0, 0] [pid 396] exit_group(0 [pid 305] <... ioctl resumed>) = 0 [pid 400] <... munmap resumed>) = 0 [pid 399] <... close resumed>) = 0 [pid 397] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 396] <... exit_group resumed>) = ? [pid 305] close(3 [pid 400] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 399] close(3 [pid 397] exit_group(0 [pid 396] +++ exited with 0 +++ [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 305] <... close resumed>) = 0 [pid 400] <... openat resumed>) = 4 [pid 399] <... close resumed>) = 0 [pid 397] <... exit_group resumed>) = ? [pid 309] <... openat resumed>) = 3 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 400] ioctl(4, LOOP_SET_FD, 3 [pid 399] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 397] +++ exited with 0 +++ [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=396, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 400] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 399] <... openat resumed>) = 3 [pid 309] <... ioctl resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 401 [pid 400] ioctl(4, LOOP_CLR_FD [pid 399] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] close(3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=397, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 400] <... ioctl resumed>) = 0 [pid 399] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] <... close resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 399] exit_group(0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] ioctl(3, LOOP_CLR_FD [pid 399] <... exit_group resumed>) = ? [pid 308] <... ioctl resumed>) = 0 [pid 399] +++ exited with 0 +++ [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 402 [pid 308] close(3./strace-static-x86_64: Process 401 attached [pid 400] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... close resumed>) = 0 [pid 401] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 400] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=399, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 400] close(4 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 401] <... prctl resumed>) = 0 [pid 400] <... close resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 400] close(3 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 403 [pid 307] ioctl(3, LOOP_CLR_FD [pid 401] setpgid(0, 0 [pid 400] <... close resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 401] <... setpgid resumed>) = 0 [pid 400] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 307] close(3 [pid 401] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 400] <... openat resumed>) = 3 [pid 307] <... close resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 401] <... openat resumed>) = 3 [pid 400] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 401] write(3, "1000", 4 [pid 400] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 402 attached [pid 401] <... write resumed>) = 4 [pid 400] exit_group(0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 404 [pid 306] <... ioctl resumed>) = 0 [pid 402] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 401] close(3 [pid 400] <... exit_group resumed>) = ? [pid 306] close(3 [pid 402] <... prctl resumed>) = 0 [pid 401] <... close resumed>) = 0 [pid 400] +++ exited with 0 +++ [pid 402] setpgid(0, 0 [pid 401] memfd_create("syzkaller", 0 [pid 306] <... close resumed>) = 0 [pid 402] <... setpgid resumed>) = 0 [pid 401] <... memfd_create resumed>) = 3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=400, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 401] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR./strace-static-x86_64: Process 403 attached [pid 401] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 310] <... openat resumed>) = 3 [pid 403] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 403] setpgid(0, 0) = 0 [pid 403] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 401] 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 310] ioctl(3, LOOP_CLR_FD [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 405 [pid 403] <... openat resumed>) = 3 [pid 310] <... ioctl resumed>) = 0 [pid 403] write(3, "1000", 4 [pid 310] close(3 [pid 403] <... write resumed>) = 4 [pid 310] <... close resumed>) = 0 [pid 403] close(3 [pid 402] <... openat resumed>) = 3 [pid 401] <... write resumed>) = 262144 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 403] <... close resumed>) = 0 [pid 402] write(3, "1000", 4 [pid 401] munmap(0x7f7bfe3d8000, 262144 [pid 403] memfd_create("syzkaller", 0) = 3 [pid 402] <... write resumed>) = 4 [pid 401] <... munmap resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 406 [pid 403] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 402] close(3 [pid 401] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 404 attached [pid 403] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 402] <... close resumed>) = 0 [pid 401] <... openat resumed>) = 4 [pid 404] prctl(PR_SET_PDEATHSIG, SIGKILL [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] memfd_create("syzkaller", 0 [pid 401] ioctl(4, LOOP_SET_FD, 3 [pid 404] <... prctl resumed>) = 0 [pid 402] <... memfd_create resumed>) = 3 [pid 401] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 404] setpgid(0, 0 [pid 402] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 401] ioctl(4, LOOP_CLR_FD [pid 404] <... setpgid resumed>) = 0 [pid 402] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 401] <... ioctl resumed>) = 0 [pid 403] <... write resumed>) = 262144 [pid 403] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 403] openat(AT_FDCWD, "/dev/loop3", O_RDWR./strace-static-x86_64: Process 405 attached [pid 402] 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 404] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 405] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 403] <... openat resumed>) = 4 [pid 403] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 405] <... prctl resumed>) = 0 [pid 403] ioctl(4, LOOP_CLR_FD [pid 405] setpgid(0, 0 [pid 404] <... openat resumed>) = 3 [pid 403] <... ioctl resumed>) = 0 [pid 402] <... write resumed>) = 262144 [pid 401] ioctl(4, LOOP_SET_FD, 3 [pid 405] <... setpgid resumed>) = 0 [pid 404] write(3, "1000", 4 [pid 402] munmap(0x7f7bfe3d8000, 262144 [pid 401] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 404] <... write resumed>) = 4 [pid 402] <... munmap resumed>) = 0 [pid 401] close(4 [pid 405] <... openat resumed>) = 3 ./strace-static-x86_64: Process 406 attached [pid 405] write(3, "1000", 4 [pid 406] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 405] <... write resumed>) = 4 [pid 404] close(3 [pid 402] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 401] <... close resumed>) = 0 [pid 406] <... prctl resumed>) = 0 [pid 405] close(3 [pid 404] <... close resumed>) = 0 [pid 403] ioctl(4, LOOP_SET_FD, 3 [pid 402] <... openat resumed>) = 4 [pid 401] close(3 [pid 406] setpgid(0, 0 [pid 405] <... close resumed>) = 0 [pid 403] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 406] <... setpgid resumed>) = 0 [pid 405] memfd_create("syzkaller", 0 [pid 403] close(4 [pid 406] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 405] <... memfd_create resumed>) = 3 [pid 403] <... close resumed>) = 0 [pid 401] <... close resumed>) = 0 [pid 404] memfd_create("syzkaller", 0 [pid 402] ioctl(4, LOOP_SET_FD, 3 [pid 406] <... openat resumed>) = 3 [pid 405] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 404] <... memfd_create resumed>) = 3 [pid 403] close(3 [pid 402] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 401] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 406] write(3, "1000", 4 [pid 405] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 404] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 403] <... close resumed>) = 0 [pid 402] ioctl(4, LOOP_CLR_FD [pid 401] <... openat resumed>) = 3 [pid 406] <... write resumed>) = 4 [pid 405] 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 404] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 403] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 402] <... ioctl resumed>) = 0 [pid 401] ioctl(3, BLKSECDISCARD, [0, 0] [pid 406] close(3 [pid 405] <... write resumed>) = 262144 [pid 404] 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 403] <... openat resumed>) = 3 [pid 401] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 406] <... close resumed>) = 0 [pid 405] munmap(0x7f7bfe3d8000, 262144 [pid 403] ioctl(3, BLKSECDISCARD, [0, 0] [pid 406] memfd_create("syzkaller", 0 [pid 405] <... munmap resumed>) = 0 [pid 403] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 406] <... memfd_create resumed>) = 3 [pid 405] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 404] <... write resumed>) = 262144 [pid 401] exit_group(0 [pid 406] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 405] <... openat resumed>) = 4 [pid 404] munmap(0x7f7bfe3d8000, 262144 [pid 403] exit_group(0 [pid 401] <... exit_group resumed>) = ? [pid 406] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 405] ioctl(4, LOOP_SET_FD, 3 [pid 404] <... munmap resumed>) = 0 [pid 403] <... exit_group resumed>) = ? [pid 406] 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 405] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 404] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 403] +++ exited with 0 +++ [pid 401] +++ exited with 0 +++ [pid 406] <... write resumed>) = 262144 [pid 405] ioctl(4, LOOP_CLR_FD [pid 404] <... openat resumed>) = 4 [pid 402] ioctl(4, LOOP_SET_FD, 3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=403, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 406] munmap(0x7f7bfe3d8000, 262144 [pid 405] <... ioctl resumed>) = 0 [pid 404] ioctl(4, LOOP_SET_FD, 3 [pid 402] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=401, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 406] <... munmap resumed>) = 0 [pid 404] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 402] close(4 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 406] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 404] ioctl(4, LOOP_CLR_FD [pid 402] <... close resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 406] <... openat resumed>) = 4 [pid 404] <... ioctl resumed>) = 0 [pid 402] close(3 [pid 406] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 405] ioctl(4, LOOP_SET_FD, 3 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 406] ioctl(4, LOOP_CLR_FD [pid 405] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... openat resumed>) = 3 [pid 406] <... ioctl resumed>) = 0 [pid 405] close(4 [pid 402] <... close resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 405] <... close resumed>) = 0 [pid 402] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] <... ioctl resumed>) = 0 [pid 405] close(3 [pid 402] <... openat resumed>) = 3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 305] close(3 [pid 405] <... close resumed>) = 0 [pid 404] ioctl(4, LOOP_SET_FD, 3 [pid 402] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] <... openat resumed>) = 3 [pid 305] <... close resumed>) = 0 [pid 406] ioctl(4, LOOP_SET_FD, 3 [pid 405] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 404] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 402] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] ioctl(3, LOOP_CLR_FD [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 406] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 405] <... openat resumed>) = 3 [pid 406] close(4 [pid 405] ioctl(3, BLKSECDISCARD, [0, 0] [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 407 [pid 406] <... close resumed>) = 0 [pid 405] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 406] close(3 [pid 405] exit_group(0 [pid 406] <... close resumed>) = 0 [pid 405] <... exit_group resumed>) = ? [pid 406] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 405] +++ exited with 0 +++ [pid 406] <... openat resumed>) = 3 [pid 406] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 406] exit_group(0) = ? [pid 406] +++ exited with 0 +++ ./strace-static-x86_64: Process 407 attached [pid 407] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 407] setpgid(0, 0 [pid 404] close(4 [pid 402] exit_group(0 [pid 308] <... ioctl resumed>) = 0 [pid 404] <... close resumed>) = 0 [pid 402] <... exit_group resumed>) = ? [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=406, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 404] close(3 [pid 308] close(3 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=405, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 402] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=402, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 308] <... close resumed>) = 0 [pid 407] <... setpgid resumed>) = 0 [pid 407] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 309] <... restart_syscall resumed>) = 0 [pid 404] <... close resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 404] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] <... openat resumed>) = 3 [pid 309] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 309] close(3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 404] <... openat resumed>) = 3 [pid 310] <... ioctl resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 408 [pid 404] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] close(3 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] <... openat resumed>) = 3 [pid 404] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] <... close resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 404] exit_group(0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 409 [pid 306] <... ioctl resumed>) = 0 [pid 404] <... exit_group resumed>) = ? [pid 306] close(3 [pid 407] <... openat resumed>) = 3 [pid 407] write(3, "1000", 4 [pid 404] +++ exited with 0 +++ [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 410 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=404, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... close resumed>) = 0 [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 407] <... write resumed>) = 4 [pid 407] close(3 [pid 307] <... restart_syscall resumed>) = 0 [pid 407] <... close resumed>) = 0 [pid 407] memfd_create("syzkaller", 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 411 [pid 407] <... memfd_create resumed>) = 3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 407] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 307] <... openat resumed>) = 3 [pid 407] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 409 attached ./strace-static-x86_64: Process 408 attached [pid 307] close(3) = 0 [pid 408] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 409] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 408] <... prctl resumed>) = 0 [pid 407] 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] <... prctl resumed>) = 0 [pid 408] setpgid(0, 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 412 [pid 409] setpgid(0, 0 [pid 408] <... setpgid resumed>) = 0 [pid 409] <... setpgid resumed>) = 0 [pid 408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 412 attached [pid 409] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 408] <... openat resumed>) = 3 [pid 407] <... write resumed>) = 262144 [pid 412] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 409] <... openat resumed>) = 3 [pid 408] write(3, "1000", 4 [pid 412] <... prctl resumed>) = 0 [pid 409] write(3, "1000", 4 [pid 408] <... write resumed>) = 4 [pid 412] setpgid(0, 0 [pid 409] <... write resumed>) = 4 [pid 408] close(3 [pid 412] <... setpgid resumed>) = 0 [pid 409] close(3 [pid 408] <... close resumed>) = 0 [pid 409] <... close resumed>) = 0 ./strace-static-x86_64: Process 411 attached ./strace-static-x86_64: Process 410 attached [pid 409] memfd_create("syzkaller", 0 [pid 408] memfd_create("syzkaller", 0 [pid 412] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 411] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 410] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 409] <... memfd_create resumed>) = 3 [pid 407] munmap(0x7f7bfe3d8000, 262144 [pid 412] <... openat resumed>) = 3 [pid 411] <... prctl resumed>) = 0 [pid 410] <... prctl resumed>) = 0 [pid 409] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 408] <... memfd_create resumed>) = 3 [pid 407] <... munmap resumed>) = 0 [pid 412] write(3, "1000", 4 [pid 411] setpgid(0, 0 [pid 410] setpgid(0, 0 [pid 409] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 408] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 407] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 411] <... setpgid resumed>) = 0 [pid 410] <... setpgid resumed>) = 0 [pid 407] <... openat resumed>) = 4 [pid 411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 410] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 407] ioctl(4, LOOP_SET_FD, 3 [pid 411] <... openat resumed>) = 3 [pid 410] <... openat resumed>) = 3 [pid 409] 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 407] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 412] <... write resumed>) = 4 [pid 408] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 411] write(3, "1000", 4 [pid 410] write(3, "1000", 4 [pid 407] ioctl(4, LOOP_CLR_FD [pid 411] <... write resumed>) = 4 [pid 410] <... write resumed>) = 4 [pid 407] <... ioctl resumed>) = 0 [pid 411] close(3 [pid 410] close(3 [pid 411] <... close resumed>) = 0 [pid 410] <... close resumed>) = 0 [pid 411] memfd_create("syzkaller", 0 [pid 410] memfd_create("syzkaller", 0 [pid 411] <... memfd_create resumed>) = 3 [pid 410] <... memfd_create resumed>) = 3 [pid 408] 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 411] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 410] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 407] ioctl(4, LOOP_SET_FD, 3 [pid 411] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 410] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 409] <... write resumed>) = 262144 [pid 407] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 412] close(3 [pid 411] 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 410] 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] munmap(0x7f7bfe3d8000, 262144 [pid 408] <... write resumed>) = 262144 [pid 407] close(4 [pid 412] <... close resumed>) = 0 [pid 411] <... write resumed>) = 262144 [pid 410] <... write resumed>) = 262144 [pid 409] <... munmap resumed>) = 0 [pid 408] munmap(0x7f7bfe3d8000, 262144 [pid 407] <... close resumed>) = 0 [pid 412] memfd_create("syzkaller", 0 [pid 411] munmap(0x7f7bfe3d8000, 262144 [pid 410] munmap(0x7f7bfe3d8000, 262144 [pid 409] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 408] <... munmap resumed>) = 0 [pid 407] close(3 [pid 412] <... memfd_create resumed>) = 3 [pid 411] <... munmap resumed>) = 0 [pid 410] <... munmap resumed>) = 0 [pid 409] <... openat resumed>) = 4 [pid 408] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 407] <... close resumed>) = 0 [pid 412] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 411] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 410] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 409] ioctl(4, LOOP_SET_FD, 3 [pid 408] <... openat resumed>) = 4 [pid 407] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 412] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 411] <... openat resumed>) = 4 [pid 410] <... openat resumed>) = 4 [pid 409] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 408] ioctl(4, LOOP_SET_FD, 3 [pid 407] <... openat resumed>) = 3 [pid 411] ioctl(4, LOOP_SET_FD, 3 [pid 410] ioctl(4, LOOP_SET_FD, 3 [pid 407] ioctl(3, BLKSECDISCARD, [0, 0] [pid 411] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 410] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 407] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 411] ioctl(4, LOOP_CLR_FD [pid 410] ioctl(4, LOOP_CLR_FD [pid 407] exit_group(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 411] <... ioctl resumed>) = 0 [pid 410] <... ioctl resumed>) = 0 [pid 409] ioctl(4, LOOP_CLR_FD [pid 407] <... exit_group resumed>) = ? [pid 408] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 412] <... write resumed>) = 262144 [pid 409] <... ioctl resumed>) = 0 [pid 408] ioctl(4, LOOP_CLR_FD [pid 407] +++ exited with 0 +++ [pid 412] munmap(0x7f7bfe3d8000, 262144 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=407, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 412] <... munmap resumed>) = 0 [pid 408] <... ioctl resumed>) = 0 [pid 412] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 411] ioctl(4, LOOP_SET_FD, 3 [pid 410] ioctl(4, LOOP_SET_FD, 3 [pid 412] <... openat resumed>) = 4 [pid 411] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 410] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 412] ioctl(4, LOOP_SET_FD, 3 [pid 411] close(4 [pid 410] close(4 [pid 305] <... openat resumed>) = 3 [pid 412] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 411] <... close resumed>) = 0 [pid 410] <... close resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 412] ioctl(4, LOOP_CLR_FD [pid 411] close(3 [pid 410] close(3 [pid 409] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... ioctl resumed>) = 0 [pid 412] <... ioctl resumed>) = 0 [pid 411] <... close resumed>) = 0 [pid 410] <... close resumed>) = 0 [pid 409] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 408] ioctl(4, LOOP_SET_FD, 3 [pid 305] close(3 [pid 411] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 410] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 409] close(4 [pid 408] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... close resumed>) = 0 [pid 411] <... openat resumed>) = 3 [pid 410] <... openat resumed>) = 3 [pid 409] <... close resumed>) = 0 [pid 408] close(4 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 411] ioctl(3, BLKSECDISCARD, [0, 0] [pid 410] ioctl(3, BLKSECDISCARD, [0, 0] [pid 409] close(3 [pid 408] <... close resumed>) = 0 [pid 412] ioctl(4, LOOP_SET_FD, 3 [pid 411] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 410] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 413 [pid 411] exit_group(0 [pid 410] exit_group(0 [pid 411] <... exit_group resumed>) = ? [pid 410] <... exit_group resumed>) = ? [pid 412] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 411] +++ exited with 0 +++ [pid 410] +++ exited with 0 +++ [pid 409] <... close resumed>) = 0 [pid 408] close(3 [pid 412] close(4 [pid 409] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000./strace-static-x86_64: Process 413 attached [pid 413] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 408] <... close resumed>) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=410, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=411, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 412] <... close resumed>) = 0 [pid 409] <... openat resumed>) = 3 [pid 412] close(3 [pid 409] ioctl(3, BLKSECDISCARD, [0, 0] [pid 413] <... prctl resumed>) = 0 [pid 413] setpgid(0, 0) = 0 [pid 412] <... close resumed>) = 0 [pid 409] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 408] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 412] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 409] exit_group(0 [pid 408] <... openat resumed>) = 3 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 306] <... openat resumed>) = 3 [pid 412] <... openat resumed>) = 3 [pid 409] <... exit_group resumed>) = ? [pid 408] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] <... openat resumed>) = 3 [pid 412] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] ioctl(3, LOOP_CLR_FD [pid 413] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 412] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 409] +++ exited with 0 +++ [pid 408] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] ioctl(3, LOOP_CLR_FD [pid 306] <... ioctl resumed>) = 0 [pid 413] write(3, "1000", 4 [pid 412] exit_group(0 [pid 408] exit_group(0 [pid 310] <... ioctl resumed>) = 0 [pid 413] <... write resumed>) = 4 [pid 412] <... exit_group resumed>) = ? [pid 408] <... exit_group resumed>) = ? [pid 310] close(3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=409, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] close(3 [pid 413] close(3 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 413] <... close resumed>) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 413] memfd_create("syzkaller", 0 [pid 412] +++ exited with 0 +++ [pid 413] <... memfd_create resumed>) = 3 [pid 310] <... close resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=412, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... close resumed>) = 0 [pid 413] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 413] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 408] +++ exited with 0 +++ [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] <... openat resumed>) = 3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 413] 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 309] ioctl(3, LOOP_CLR_FD [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 309] <... ioctl resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 309] close(3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 414 [pid 309] <... close resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=408, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] <... ioctl resumed>) = 0 [pid 413] <... write resumed>) = 262144 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 307] close(3 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 415 [pid 308] <... restart_syscall resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 416 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 417 [pid 308] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 414 attached [pid 414] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 308] <... ioctl resumed>) = 0 [pid 414] <... prctl resumed>) = 0 [pid 308] close(3 [pid 414] setpgid(0, 0 [pid 308] <... close resumed>) = 0 [pid 414] <... setpgid resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 413] munmap(0x7f7bfe3d8000, 262144 [pid 414] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 413] <... munmap resumed>) = 0 [pid 413] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 418 ./strace-static-x86_64: Process 416 attached [pid 414] <... openat resumed>) = 3 [pid 413] <... openat resumed>) = 4 [pid 416] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 414] write(3, "1000", 4 [pid 413] ioctl(4, LOOP_SET_FD, 3 [pid 416] <... prctl resumed>) = 0 [pid 414] <... write resumed>) = 4 [pid 413] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 414] close(3 [pid 416] setpgid(0, 0 [pid 413] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 415 attached ./strace-static-x86_64: Process 417 attached [pid 416] <... setpgid resumed>) = 0 [pid 415] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 414] <... close resumed>) = 0 [pid 415] <... prctl resumed>) = 0 [pid 414] memfd_create("syzkaller", 0 [pid 416] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 417] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 415] setpgid(0, 0 [pid 414] <... memfd_create resumed>) = 3 [pid 416] <... openat resumed>) = 3 [pid 415] <... setpgid resumed>) = 0 [pid 417] <... prctl resumed>) = 0 [pid 414] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 413] ioctl(4, LOOP_SET_FD, 3 [pid 417] setpgid(0, 0 [pid 416] write(3, "1000", 4 [pid 415] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 414] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 413] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 418 attached [pid 417] <... setpgid resumed>) = 0 [pid 416] <... write resumed>) = 4 [pid 415] <... openat resumed>) = 3 [pid 413] close(4 [pid 418] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 416] close(3 [pid 415] write(3, "1000", 4 [pid 413] <... close resumed>) = 0 [pid 418] <... prctl resumed>) = 0 [pid 416] <... close resumed>) = 0 [pid 415] <... write resumed>) = 4 [pid 413] close(3 [pid 418] setpgid(0, 0 [pid 417] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 416] memfd_create("syzkaller", 0 [pid 415] close(3 [pid 414] 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 413] <... close resumed>) = 0 [pid 418] <... setpgid resumed>) = 0 [pid 417] <... openat resumed>) = 3 [pid 416] <... memfd_create resumed>) = 3 [pid 415] <... close resumed>) = 0 [pid 413] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 418] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 417] write(3, "1000", 4 [pid 416] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 415] memfd_create("syzkaller", 0 [pid 413] <... openat resumed>) = 3 [pid 418] <... openat resumed>) = 3 [pid 417] <... write resumed>) = 4 [pid 416] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 415] <... memfd_create resumed>) = 3 [pid 414] <... write resumed>) = 262144 [pid 413] ioctl(3, BLKSECDISCARD, [0, 0] [pid 418] write(3, "1000", 4 [pid 417] close(3 [pid 415] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 413] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 418] <... write resumed>) = 4 [pid 415] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 413] exit_group(0 [pid 418] close(3 [pid 417] <... close resumed>) = 0 [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] 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] munmap(0x7f7bfe3d8000, 262144 [pid 413] <... exit_group resumed>) = ? [pid 418] <... close resumed>) = 0 [pid 417] memfd_create("syzkaller", 0 [pid 416] <... write resumed>) = 262144 [pid 415] <... write resumed>) = 262144 [pid 414] <... munmap resumed>) = 0 [pid 413] +++ exited with 0 +++ [pid 418] memfd_create("syzkaller", 0 [pid 417] <... memfd_create resumed>) = 3 [pid 416] munmap(0x7f7bfe3d8000, 262144 [pid 415] munmap(0x7f7bfe3d8000, 262144 [pid 414] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 418] <... memfd_create resumed>) = 3 [pid 417] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 416] <... munmap resumed>) = 0 [pid 415] <... munmap resumed>) = 0 [pid 414] <... openat resumed>) = 4 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=413, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 418] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 417] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 416] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 415] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 414] ioctl(4, LOOP_SET_FD, 3 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 418] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 415] <... openat resumed>) = 4 [pid 305] <... openat resumed>) = 3 [pid 418] 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 417] 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 416] <... openat resumed>) = 4 [pid 415] ioctl(4, LOOP_SET_FD, 3 [pid 414] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] ioctl(3, LOOP_CLR_FD [pid 418] <... write resumed>) = 262144 [pid 417] <... write resumed>) = 262144 [pid 416] ioctl(4, LOOP_SET_FD, 3 [pid 415] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 414] ioctl(4, LOOP_CLR_FD [pid 305] <... ioctl resumed>) = 0 [pid 418] munmap(0x7f7bfe3d8000, 262144 [pid 417] munmap(0x7f7bfe3d8000, 262144 [pid 416] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 415] ioctl(4, LOOP_CLR_FD [pid 414] <... ioctl resumed>) = 0 [pid 305] close(3 [pid 418] <... munmap resumed>) = 0 [pid 417] <... munmap resumed>) = 0 [pid 416] ioctl(4, LOOP_CLR_FD [pid 415] <... ioctl resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 418] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 417] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 416] <... ioctl resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 418] <... openat resumed>) = 4 [pid 418] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 419 [pid 418] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 415] ioctl(4, LOOP_SET_FD, 3 [pid 418] ioctl(4, LOOP_CLR_FD [pid 415] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 418] <... ioctl resumed>) = 0 [pid 415] close(4) = 0 [pid 415] close(3) = 0 [pid 418] ioctl(4, LOOP_SET_FD, 3 [pid 415] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 418] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 415] <... openat resumed>) = 3 [pid 418] close(4 [pid 415] ioctl(3, BLKSECDISCARD, [0, 0] [pid 418] <... close resumed>) = 0 [pid 417] <... openat resumed>) = 4 [pid 415] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 414] ioctl(4, LOOP_SET_FD, 3 [pid 418] close(3 [pid 417] ioctl(4, LOOP_SET_FD, 3 [pid 415] exit_group(0 [pid 414] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 418] <... close resumed>) = 0 [pid 417] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 415] <... exit_group resumed>) = ? [pid 414] close(4 [pid 418] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 417] ioctl(4, LOOP_CLR_FD [pid 416] ioctl(4, LOOP_SET_FD, 3 [pid 415] +++ exited with 0 +++ [pid 414] <... close resumed>) = 0 [pid 418] <... openat resumed>) = 3 [pid 417] <... ioctl resumed>) = 0 [pid 416] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 414] close(3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=415, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 418] ioctl(3, BLKSECDISCARD, [0, 0] [pid 416] close(4 [pid 418] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 418] exit_group(0) = ? [pid 418] +++ exited with 0 +++ [pid 416] <... close resumed>) = 0 [pid 414] <... close resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 416] close(3 [pid 414] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=418, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 419 attached [pid 419] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 416] <... close resumed>) = 0 [pid 414] <... openat resumed>) = 3 [pid 417] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 416] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 414] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 417] close(4 [pid 419] <... prctl resumed>) = 0 [pid 417] <... close resumed>) = 0 [pid 416] <... openat resumed>) = 3 [pid 414] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 306] <... openat resumed>) = 3 [pid 419] setpgid(0, 0 [pid 417] close(3 [pid 416] ioctl(3, BLKSECDISCARD, [0, 0] [pid 414] exit_group(0 [pid 308] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 419] <... setpgid resumed>) = 0 [pid 419] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 417] <... close resumed>) = 0 [pid 416] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 414] <... exit_group resumed>) = ? [pid 308] ioctl(3, LOOP_CLR_FD [pid 306] <... ioctl resumed>) = 0 [pid 417] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 419] write(3, "1000", 4 [pid 416] exit_group(0 [pid 419] <... write resumed>) = 4 [pid 419] close(3) = 0 [pid 419] memfd_create("syzkaller", 0) = 3 [pid 414] +++ exited with 0 +++ [pid 308] <... ioctl resumed>) = 0 [pid 306] close(3 [pid 419] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 417] <... openat resumed>) = 3 [pid 416] <... exit_group resumed>) = ? [pid 308] close(3 [pid 306] <... close resumed>) = 0 [pid 419] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 417] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=414, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] <... close resumed>) = 0 [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 417] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 416] +++ exited with 0 +++ [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 417] exit_group(0 [pid 310] <... openat resumed>) = 3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=416, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3 [pid 417] <... exit_group resumed>) = ? [pid 310] ioctl(3, LOOP_CLR_FD [pid 309] <... close resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 420 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 417] +++ exited with 0 +++ [pid 310] <... ioctl resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 421 [pid 419] <... write resumed>) = 262144 [pid 310] close(3 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 422 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=417, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 419] munmap(0x7f7bfe3d8000, 262144 [pid 310] <... close resumed>) = 0 [pid 419] <... munmap resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 419] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 419] <... openat resumed>) = 4 [pid 307] <... openat resumed>) = 3 [pid 419] ioctl(4, LOOP_SET_FD, 3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 419] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] <... ioctl resumed>) = 0 [pid 419] ioctl(4, LOOP_CLR_FD [pid 307] close(3 [pid 419] <... ioctl resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 423 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 424 [pid 419] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 419] close(4) = 0 [pid 419] close(3./strace-static-x86_64: Process 423 attached ) = 0 ./strace-static-x86_64: Process 424 attached ./strace-static-x86_64: Process 420 attached [pid 423] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 419] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000./strace-static-x86_64: Process 422 attached ./strace-static-x86_64: Process 421 attached [pid 424] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 423] <... prctl resumed>) = 0 [pid 420] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 419] <... openat resumed>) = 3 [pid 424] <... prctl resumed>) = 0 [pid 423] setpgid(0, 0 [pid 422] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 421] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 420] <... prctl resumed>) = 0 [pid 419] ioctl(3, BLKSECDISCARD, [0, 0] [pid 424] setpgid(0, 0 [pid 423] <... setpgid resumed>) = 0 [pid 422] <... prctl resumed>) = 0 [pid 421] <... prctl resumed>) = 0 [pid 420] setpgid(0, 0 [pid 419] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 422] setpgid(0, 0 [pid 421] setpgid(0, 0 [pid 419] exit_group(0 [pid 422] <... setpgid resumed>) = 0 [pid 421] <... setpgid resumed>) = 0 [pid 419] <... exit_group resumed>) = ? [pid 424] <... setpgid resumed>) = 0 [pid 423] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 422] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 421] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 420] <... setpgid resumed>) = 0 [pid 419] +++ exited with 0 +++ [pid 424] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 423] <... openat resumed>) = 3 [pid 422] <... openat resumed>) = 3 [pid 421] <... openat resumed>) = 3 [pid 420] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=419, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 424] <... openat resumed>) = 3 [pid 423] write(3, "1000", 4 [pid 422] write(3, "1000", 4 [pid 421] write(3, "1000", 4 [pid 420] <... openat resumed>) = 3 [pid 424] write(3, "1000", 4 [pid 423] <... write resumed>) = 4 [pid 422] <... write resumed>) = 4 [pid 421] <... write resumed>) = 4 [pid 420] write(3, "1000", 4 [pid 424] <... write resumed>) = 4 [pid 423] close(3 [pid 422] close(3 [pid 421] close(3 [pid 420] <... write resumed>) = 4 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 424] close(3 [pid 423] <... close resumed>) = 0 [pid 422] <... close resumed>) = 0 [pid 421] <... close resumed>) = 0 [pid 420] close(3 [pid 305] <... openat resumed>) = 3 [pid 424] <... close resumed>) = 0 [pid 423] memfd_create("syzkaller", 0 [pid 422] memfd_create("syzkaller", 0 [pid 421] memfd_create("syzkaller", 0 [pid 420] <... close resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 424] memfd_create("syzkaller", 0 [pid 423] <... memfd_create resumed>) = 3 [pid 422] <... memfd_create resumed>) = 3 [pid 421] <... memfd_create resumed>) = 3 [pid 420] memfd_create("syzkaller", 0 [pid 305] <... ioctl resumed>) = 0 [pid 424] <... memfd_create resumed>) = 3 [pid 423] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 422] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 421] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 420] <... memfd_create resumed>) = 3 [pid 305] close(3 [pid 424] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 423] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 422] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 421] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 420] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 305] <... close resumed>) = 0 [pid 424] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 423] 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 422] 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 421] 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 420] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 424] 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 423] <... write resumed>) = 262144 [pid 422] <... write resumed>) = 262144 [pid 421] <... write resumed>) = 262144 [pid 422] munmap(0x7f7bfe3d8000, 262144 [pid 421] munmap(0x7f7bfe3d8000, 262144 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 425 [pid 423] munmap(0x7f7bfe3d8000, 262144 [pid 422] <... munmap resumed>) = 0 [pid 421] <... munmap resumed>) = 0 [pid 420] 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 422] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 421] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 422] <... openat resumed>) = 4 [pid 421] <... openat resumed>) = 4 [pid 422] ioctl(4, LOOP_SET_FD, 3 [pid 421] ioctl(4, LOOP_SET_FD, 3 [pid 423] <... munmap resumed>) = 0 [pid 422] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 421] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 422] ioctl(4, LOOP_CLR_FD [pid 421] ioctl(4, LOOP_CLR_FD [pid 422] <... ioctl resumed>) = 0 [pid 421] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 425 attached [pid 425] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 423] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 424] <... write resumed>) = 262144 [pid 423] <... openat resumed>) = 4 [pid 422] ioctl(4, LOOP_SET_FD, 3 [pid 421] ioctl(4, LOOP_SET_FD, 3 [pid 424] munmap(0x7f7bfe3d8000, 262144 [pid 423] ioctl(4, LOOP_SET_FD, 3 [pid 422] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 421] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 420] <... write resumed>) = 262144 [pid 424] <... munmap resumed>) = 0 [pid 423] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 422] close(4 [pid 421] close(4 [pid 420] munmap(0x7f7bfe3d8000, 262144 [pid 424] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 423] ioctl(4, LOOP_CLR_FD [pid 422] <... close resumed>) = 0 [pid 421] <... close resumed>) = 0 [pid 424] <... openat resumed>) = 4 [pid 423] <... ioctl resumed>) = 0 [pid 422] close(3 [pid 421] close(3 [pid 420] <... munmap resumed>) = 0 [pid 424] ioctl(4, LOOP_SET_FD, 3 [pid 422] <... close resumed>) = 0 [pid 421] <... close resumed>) = 0 [pid 420] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 424] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 422] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 421] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 420] <... openat resumed>) = 4 [pid 424] ioctl(4, LOOP_CLR_FD [pid 422] <... openat resumed>) = 3 [pid 421] <... openat resumed>) = 3 [pid 420] ioctl(4, LOOP_SET_FD, 3 [pid 424] <... ioctl resumed>) = 0 [pid 423] ioctl(4, LOOP_SET_FD, 3 [pid 422] ioctl(3, BLKSECDISCARD, [0, 0] [pid 421] ioctl(3, BLKSECDISCARD, [0, 0] [pid 420] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 425] setpgid(0, 0 [pid 423] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 422] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 421] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 420] ioctl(4, LOOP_CLR_FD [pid 425] <... setpgid resumed>) = 0 [pid 423] close(4 [pid 422] exit_group(0 [pid 421] exit_group(0 [pid 425] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 423] <... close resumed>) = 0 [pid 422] <... exit_group resumed>) = ? [pid 421] <... exit_group resumed>) = ? [pid 420] <... ioctl resumed>) = 0 [pid 425] <... openat resumed>) = 3 [pid 423] close(3 [pid 422] +++ exited with 0 +++ [pid 421] +++ exited with 0 +++ [pid 425] write(3, "1000", 4 [pid 424] ioctl(4, LOOP_SET_FD, 3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=422, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 425] <... write resumed>) = 4 [pid 425] close(3) = 0 [pid 423] <... close resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 424] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 425] memfd_create("syzkaller", 0 [pid 424] close(4 [pid 423] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] <... openat resumed>) = 3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=421, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 425] <... memfd_create resumed>) = 3 [pid 424] <... close resumed>) = 0 [pid 423] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 425] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 424] close(3 [pid 423] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] <... ioctl resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 425] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 309] close(3 [pid 425] 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 424] <... close resumed>) = 0 [pid 423] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 420] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... close resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 425] <... write resumed>) = 262144 [pid 424] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 423] exit_group(0 [pid 420] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] ioctl(3, LOOP_CLR_FD [pid 424] <... openat resumed>) = 3 [pid 423] <... exit_group resumed>) = ? [pid 420] close(4 [pid 306] <... ioctl resumed>) = 0 [pid 424] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 426 [pid 425] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 423] +++ exited with 0 +++ [pid 424] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 420] <... close resumed>) = 0 [pid 306] close(3 [pid 424] exit_group(0 [pid 420] close(3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=423, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... close resumed>) = 0 [pid 424] <... exit_group resumed>) = ? [pid 425] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 425] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 425] ioctl(4, LOOP_CLR_FD) = 0 [pid 420] <... close resumed>) = 0 [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 426 attached [pid 426] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 424] +++ exited with 0 +++ [pid 310] <... restart_syscall resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=424, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 425] ioctl(4, LOOP_SET_FD, 3 [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 425] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 425] close(4 [pid 420] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 425] <... close resumed>) = 0 [pid 420] <... openat resumed>) = 3 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 427 [pid 420] ioctl(3, BLKSECDISCARD, [0, 0] [pid 425] close(3 [pid 420] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 307] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 427 attached [pid 425] <... close resumed>) = 0 [pid 420] exit_group(0 [pid 310] <... openat resumed>) = 3 [pid 426] <... prctl resumed>) = 0 [pid 420] <... exit_group resumed>) = ? [pid 310] ioctl(3, LOOP_CLR_FD [pid 426] setpgid(0, 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 426] <... setpgid resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 426] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 420] +++ exited with 0 +++ [pid 310] close(3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 427] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 426] <... openat resumed>) = 3 [pid 310] <... close resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=420, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- [pid 307] <... ioctl resumed>) = 0 [pid 427] <... prctl resumed>) = 0 [pid 426] write(3, "1000", 4 [pid 425] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] close(3 [pid 427] setpgid(0, 0 [pid 426] <... write resumed>) = 4 [pid 425] <... openat resumed>) = 3 [pid 307] <... close resumed>) = 0 [pid 427] <... setpgid resumed>) = 0 [pid 426] close(3 [pid 425] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 428 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 427] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 426] <... close resumed>) = 0 [pid 425] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 427] <... openat resumed>) = 3 [pid 426] memfd_create("syzkaller", 0 [pid 425] exit_group(0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 429 ./strace-static-x86_64: Process 428 attached [pid 427] write(3, "1000", 4 [pid 426] <... memfd_create resumed>) = 3 [pid 425] <... exit_group resumed>) = ? [pid 428] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 427] <... write resumed>) = 4 [pid 426] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 425] +++ exited with 0 +++ [pid 426] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=425, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 427] close(3 [pid 426] 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 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 427] <... close resumed>) = 0 [pid 426] <... write resumed>) = 262144 [pid 427] memfd_create("syzkaller", 0 [pid 426] munmap(0x7f7bfe3d8000, 262144 [pid 308] <... openat resumed>) = 3 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 427] <... memfd_create resumed>) = 3 [pid 426] <... munmap resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 305] <... openat resumed>) = 3 [pid 427] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 426] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 305] ioctl(3, LOOP_CLR_FD [pid 427] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 426] <... openat resumed>) = 4 [pid 308] <... ioctl resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 426] ioctl(4, LOOP_SET_FD, 3 [pid 305] close(3 [pid 426] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... close resumed>) = 0 [pid 426] ioctl(4, LOOP_CLR_FD [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 426] <... ioctl resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 430 [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 308] close(3./strace-static-x86_64: Process 429 attached [pid 429] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 426] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 426] close(4 [pid 427] <... write resumed>) = 262144 [pid 426] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 427] munmap(0x7f7bfe3d8000, 262144 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 427] <... munmap resumed>) = 0 [pid 426] close(3 [pid 427] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 426] <... close resumed>) = 0 [pid 428] <... prctl resumed>) = 0 [pid 427] <... openat resumed>) = 4 [pid 426] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 431 [pid 429] <... prctl resumed>) = 0 [pid 428] setpgid(0, 0 [pid 427] ioctl(4, LOOP_SET_FD, 3 [pid 426] <... openat resumed>) = 3 [pid 429] setpgid(0, 0 [pid 428] <... setpgid resumed>) = 0 [pid 427] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 426] ioctl(3, BLKSECDISCARD, [0, 0] [pid 427] ioctl(4, LOOP_CLR_FD [pid 429] <... setpgid resumed>) = 0 [pid 428] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 427] <... ioctl resumed>) = 0 [pid 426] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 429] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 428] <... openat resumed>) = 3 [pid 426] exit_group(0./strace-static-x86_64: Process 430 attached [pid 429] write(3, "1000", 4 [pid 428] write(3, "1000", 4 [pid 426] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 431 attached [pid 430] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 429] <... write resumed>) = 4 [pid 428] <... write resumed>) = 4 [pid 426] +++ exited with 0 +++ [pid 431] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 430] <... prctl resumed>) = 0 [pid 429] close(3 [pid 428] close(3 [pid 427] ioctl(4, LOOP_SET_FD, 3 [pid 431] <... prctl resumed>) = 0 [pid 430] setpgid(0, 0 [pid 429] <... close resumed>) = 0 [pid 428] <... close resumed>) = 0 [pid 427] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=426, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 431] setpgid(0, 0 [pid 430] <... setpgid resumed>) = 0 [pid 429] memfd_create("syzkaller", 0 [pid 428] memfd_create("syzkaller", 0 [pid 427] close(4 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 431] <... setpgid resumed>) = 0 [pid 430] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 429] <... memfd_create resumed>) = 3 [pid 428] <... memfd_create resumed>) = 3 [pid 427] <... close resumed>) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 431] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 430] <... openat resumed>) = 3 [pid 429] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 428] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 427] close(3 [pid 430] write(3, "1000", 4 [pid 429] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 431] <... openat resumed>) = 3 [pid 430] <... write resumed>) = 4 [pid 429] 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] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 427] <... close resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 431] write(3, "1000", 4 [pid 430] close(3 [pid 429] <... write resumed>) = 262144 [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"..., 262144 [pid 427] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] <... openat resumed>) = 3 [pid 431] <... write resumed>) = 4 [pid 430] <... close resumed>) = 0 [pid 429] munmap(0x7f7bfe3d8000, 262144 [pid 309] ioctl(3, LOOP_CLR_FD [pid 430] memfd_create("syzkaller", 0 [pid 429] <... munmap resumed>) = 0 [pid 427] <... openat resumed>) = 3 [pid 309] <... ioctl resumed>) = 0 [pid 431] close(3 [pid 430] <... memfd_create resumed>) = 3 [pid 429] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 428] <... write resumed>) = 262144 [pid 427] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] close(3 [pid 431] <... close resumed>) = 0 [pid 430] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 429] <... openat resumed>) = 4 [pid 428] munmap(0x7f7bfe3d8000, 262144 [pid 427] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] <... close resumed>) = 0 [pid 431] memfd_create("syzkaller", 0 [pid 430] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 429] ioctl(4, LOOP_SET_FD, 3 [pid 428] <... munmap resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 431] <... memfd_create resumed>) = 3 [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 429] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 428] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 427] exit_group(0 [pid 431] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 430] <... write resumed>) = 262144 [pid 429] ioctl(4, LOOP_CLR_FD [pid 428] <... openat resumed>) = 4 [pid 427] <... exit_group resumed>) = ? [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 432 [pid 431] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 430] munmap(0x7f7bfe3d8000, 262144 [pid 429] <... ioctl resumed>) = 0 [pid 428] ioctl(4, LOOP_SET_FD, 3 [pid 430] <... munmap resumed>) = 0 [pid 427] +++ exited with 0 +++ [pid 430] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 430] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 430] ioctl(4, LOOP_CLR_FD) = 0 [pid 429] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [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 429] close(4 [pid 428] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 429] <... close resumed>) = 0 [pid 429] close(3 [pid 431] <... write resumed>) = 262144 [pid 429] <... close resumed>) = 0 [pid 428] ioctl(4, LOOP_CLR_FD [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=427, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 431] munmap(0x7f7bfe3d8000, 262144 [pid 430] ioctl(4, LOOP_SET_FD, 3 [pid 429] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 428] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 432 attached [pid 431] <... munmap resumed>) = 0 [pid 430] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 429] <... openat resumed>) = 3 [pid 432] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 431] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 430] close(4 [pid 429] ioctl(3, BLKSECDISCARD, [0, 0] [pid 432] <... prctl resumed>) = 0 [pid 431] <... openat resumed>) = 4 [pid 430] <... close resumed>) = 0 [pid 429] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 432] setpgid(0, 0 [pid 431] ioctl(4, LOOP_SET_FD, 3 [pid 430] close(3 [pid 429] exit_group(0 [pid 432] <... setpgid resumed>) = 0 [pid 431] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 430] <... close resumed>) = 0 [pid 429] <... exit_group resumed>) = ? [pid 306] <... openat resumed>) = 3 [pid 432] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 431] ioctl(4, LOOP_CLR_FD [pid 430] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 429] +++ exited with 0 +++ [pid 428] ioctl(4, LOOP_SET_FD, 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 432] <... openat resumed>) = 3 [pid 431] <... ioctl resumed>) = 0 [pid 430] <... openat resumed>) = 3 [pid 428] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=429, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... ioctl resumed>) = 0 [pid 432] write(3, "1000", 4 [pid 430] ioctl(3, BLKSECDISCARD, [0, 0] [pid 428] close(4 [pid 306] close(3 [pid 432] <... write resumed>) = 4 [pid 430] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 428] <... close resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 432] close(3 [pid 430] exit_group(0 [pid 428] close(3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 432] <... close resumed>) = 0 [pid 430] <... exit_group resumed>) = ? [pid 430] +++ exited with 0 +++ [pid 428] <... close resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=430, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 428] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 307] <... openat resumed>) = 3 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 432] memfd_create("syzkaller", 0 [pid 431] ioctl(4, LOOP_SET_FD, 3 [pid 428] <... openat resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 433 [pid 305] <... openat resumed>) = 3 [pid 432] <... memfd_create resumed>) = 3 [pid 431] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 428] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] <... ioctl resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 432] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 431] close(4 [pid 428] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] close(3 [pid 305] <... ioctl resumed>) = 0 [pid 432] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 431] <... close resumed>) = 0 [pid 428] exit_group(0 [pid 307] <... close resumed>) = 0 [pid 305] close(3 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 432] 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 431] close(3 [pid 428] <... exit_group resumed>) = ? [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 434 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 435 [pid 431] <... close resumed>) = 0 ./strace-static-x86_64: Process 433 attached [pid 428] +++ exited with 0 +++ [pid 431] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=428, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 431] <... openat resumed>) = 3 [pid 431] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] <... restart_syscall resumed>) = 0 [pid 431] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 431] exit_group(0) = ? [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 433] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 431] +++ exited with 0 +++ [pid 433] <... prctl resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 436 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=431, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 433] setpgid(0, 0 [pid 432] <... write resumed>) = 262144 [pid 433] <... setpgid resumed>) = 0 [pid 432] munmap(0x7f7bfe3d8000, 262144 [pid 433] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 432] <... munmap resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 433] <... openat resumed>) = 3 [pid 432] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] <... openat resumed>) = 3 [pid 433] write(3, "1000", 4 [pid 432] <... openat resumed>) = 4 [pid 308] ioctl(3, LOOP_CLR_FD [pid 433] <... write resumed>) = 4 [pid 432] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 434 attached [pid 432] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] close(3 [pid 434] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 433] close(3 [pid 432] ioctl(4, LOOP_CLR_FD [pid 308] <... close resumed>) = 0 ./strace-static-x86_64: Process 436 attached ./strace-static-x86_64: Process 435 attached [pid 434] <... prctl resumed>) = 0 [pid 433] <... close resumed>) = 0 [pid 432] <... ioctl resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 436] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 435] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 434] setpgid(0, 0 [pid 433] memfd_create("syzkaller", 0 [pid 436] <... prctl resumed>) = 0 [pid 435] <... prctl resumed>) = 0 [pid 434] <... setpgid resumed>) = 0 [pid 433] <... memfd_create resumed>) = 3 [pid 436] setpgid(0, 0 [pid 435] setpgid(0, 0 [pid 434] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 433] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 437 [pid 436] <... setpgid resumed>) = 0 [pid 435] <... setpgid resumed>) = 0 [pid 434] <... openat resumed>) = 3 [pid 433] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 436] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 435] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 434] write(3, "1000", 4 [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 434] <... write resumed>) = 4 [pid 433] <... write resumed>) = 262144 [pid 434] close(3 [pid 432] ioctl(4, LOOP_SET_FD, 3 [pid 434] <... close resumed>) = 0 [pid 433] munmap(0x7f7bfe3d8000, 262144 [pid 432] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 434] memfd_create("syzkaller", 0 [pid 433] <... munmap resumed>) = 0 [pid 432] close(4 [pid 434] <... memfd_create resumed>) = 3 [pid 433] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 432] <... close resumed>) = 0 [pid 434] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 433] <... openat resumed>) = 4 [pid 432] close(3 [pid 434] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 433] ioctl(4, LOOP_SET_FD, 3 [pid 434] 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 433] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 432] <... close resumed>) = 0 [pid 436] <... openat resumed>) = 3 [pid 435] <... openat resumed>) = 3 [pid 434] <... write resumed>) = 262144 [pid 433] ioctl(4, LOOP_CLR_FD [pid 432] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 436] write(3, "1000", 4 [pid 435] write(3, "1000", 4 [pid 433] <... ioctl resumed>) = 0 [pid 432] <... openat resumed>) = 3 [pid 436] <... write resumed>) = 4 [pid 435] <... write resumed>) = 4 [pid 434] munmap(0x7f7bfe3d8000, 262144 [pid 432] ioctl(3, BLKSECDISCARD, [0, 0] [pid 436] close(3 [pid 435] close(3 [pid 434] <... munmap resumed>) = 0 [pid 432] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 436] <... close resumed>) = 0 [pid 435] <... close resumed>) = 0 [pid 434] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 432] exit_group(0 [pid 436] memfd_create("syzkaller", 0 [pid 435] memfd_create("syzkaller", 0 [pid 434] <... openat resumed>) = 4 [pid 432] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 437 attached [pid 434] ioctl(4, LOOP_SET_FD, 3 [pid 437] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 434] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 433] ioctl(4, LOOP_SET_FD, 3 [pid 432] +++ exited with 0 +++ [pid 437] <... prctl resumed>) = 0 [pid 434] ioctl(4, LOOP_CLR_FD [pid 433] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=432, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 437] setpgid(0, 0 [pid 436] <... memfd_create resumed>) = 3 [pid 435] <... memfd_create resumed>) = 3 [pid 434] <... ioctl resumed>) = 0 [pid 433] close(4 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 437] <... setpgid resumed>) = 0 [pid 436] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 435] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 433] <... close resumed>) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 437] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 436] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 435] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 433] close(3 [pid 437] <... openat resumed>) = 3 [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 433] <... close resumed>) = 0 [pid 437] write(3, "1000", 4 [pid 434] ioctl(4, LOOP_SET_FD, 3 [pid 433] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 437] <... write resumed>) = 4 [pid 434] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 433] <... openat resumed>) = 3 [pid 309] <... openat resumed>) = 3 [pid 437] close(3 [pid 435] 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 434] close(4 [pid 433] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] ioctl(3, LOOP_CLR_FD [pid 437] <... close resumed>) = 0 [pid 434] <... close resumed>) = 0 [pid 433] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] <... ioctl resumed>) = 0 [pid 437] memfd_create("syzkaller", 0 [pid 434] close(3 [pid 433] exit_group(0 [pid 309] close(3 [pid 437] <... memfd_create resumed>) = 3 [pid 436] <... write resumed>) = 262144 [pid 435] <... write resumed>) = 262144 [pid 434] <... close resumed>) = 0 [pid 433] <... exit_group resumed>) = ? [pid 309] <... close resumed>) = 0 [pid 437] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 436] munmap(0x7f7bfe3d8000, 262144 [pid 435] munmap(0x7f7bfe3d8000, 262144 [pid 434] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 433] +++ exited with 0 +++ [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 437] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 436] <... munmap resumed>) = 0 [pid 435] <... munmap resumed>) = 0 [pid 434] <... openat resumed>) = 3 [pid 437] 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 436] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 435] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 434] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 438 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=433, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 438 attached [pid 437] <... write resumed>) = 262144 [pid 436] <... openat resumed>) = 4 [pid 435] <... openat resumed>) = 4 [pid 434] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 438] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 437] munmap(0x7f7bfe3d8000, 262144 [pid 436] ioctl(4, LOOP_SET_FD, 3 [pid 435] ioctl(4, LOOP_SET_FD, 3 [pid 434] exit_group(0 [pid 306] <... restart_syscall resumed>) = 0 [pid 438] <... prctl resumed>) = 0 [pid 437] <... munmap resumed>) = 0 [pid 436] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 435] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 434] <... exit_group resumed>) = ? [pid 438] setpgid(0, 0 [pid 437] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 436] ioctl(4, LOOP_CLR_FD [pid 435] ioctl(4, LOOP_CLR_FD [pid 434] +++ exited with 0 +++ [pid 438] <... setpgid resumed>) = 0 [pid 437] <... openat resumed>) = 4 [pid 436] <... ioctl resumed>) = 0 [pid 435] <... ioctl resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=434, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 438] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 437] ioctl(4, LOOP_SET_FD, 3 [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 438] <... openat resumed>) = 3 [pid 437] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] <... restart_syscall resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 438] write(3, "1000", 4 [pid 437] ioctl(4, LOOP_CLR_FD [pid 306] ioctl(3, LOOP_CLR_FD [pid 438] <... write resumed>) = 4 [pid 437] <... ioctl resumed>) = 0 [pid 438] close(3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] <... ioctl resumed>) = 0 [pid 438] <... close resumed>) = 0 [pid 436] ioctl(4, LOOP_SET_FD, 3 [pid 435] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... openat resumed>) = 3 [pid 306] close(3 [pid 438] memfd_create("syzkaller", 0 [pid 436] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 435] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] ioctl(3, LOOP_CLR_FD [pid 438] <... memfd_create resumed>) = 3 [pid 436] close(4 [pid 435] close(4 [pid 307] <... ioctl resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 438] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 437] ioctl(4, LOOP_SET_FD, 3 [pid 436] <... close resumed>) = 0 [pid 307] close(3 [pid 438] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 437] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 436] close(3 [pid 435] <... close resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 437] close(4 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 437] <... close resumed>) = 0 [pid 438] 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 437] close(3 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 439 [pid 437] <... close resumed>) = 0 [pid 436] <... close resumed>) = 0 [pid 435] close(3 [pid 437] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 437] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 437] exit_group(0) = ? [pid 436] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 435] <... close resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 440 [pid 437] +++ exited with 0 +++ [pid 436] <... openat resumed>) = 3 [pid 435] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 436] ioctl(3, BLKSECDISCARD, [0, 0] [pid 435] <... openat resumed>) = 3 [pid 438] <... write resumed>) = 262144 [pid 436] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 435] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=437, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 438] munmap(0x7f7bfe3d8000, 262144 [pid 436] exit_group(0 [pid 435] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 438] <... munmap resumed>) = 0 [pid 436] <... exit_group resumed>) = ? [pid 435] exit_group(0 [pid 308] <... openat resumed>) = 3 [pid 438] openat(AT_FDCWD, "/dev/loop4", O_RDWR./strace-static-x86_64: Process 439 attached [pid 436] +++ exited with 0 +++ [pid 308] ioctl(3, LOOP_CLR_FD [pid 438] <... openat resumed>) = 4 [pid 435] <... exit_group resumed>) = ? [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=436, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] <... ioctl resumed>) = 0 [pid 438] ioctl(4, LOOP_SET_FD, 3 [pid 310] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 435] +++ exited with 0 +++ [pid 438] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] close(3 [pid 438] ioctl(4, LOOP_CLR_FD [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 308] <... close resumed>) = 0 [pid 438] <... ioctl resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=435, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] ioctl(3, LOOP_CLR_FD [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 310] <... ioctl resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 310] close(3) = 0 [pid 439] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 439] <... prctl resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 439] setpgid(0, 0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 442 [pid 305] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 440 attached [pid 439] <... setpgid resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 440] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 439] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 441 [pid 305] close(3 [pid 440] <... prctl resumed>) = 0 [pid 439] <... openat resumed>) = 3 [pid 305] <... close resumed>) = 0 [pid 440] setpgid(0, 0 [pid 439] write(3, "1000", 4 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 440] <... setpgid resumed>) = 0 [pid 439] <... write resumed>) = 4 [pid 440] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 439] close(3 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 443 [pid 440] <... openat resumed>) = 3 [pid 439] <... close resumed>) = 0 [pid 440] write(3, "1000", 4 [pid 439] memfd_create("syzkaller", 0 [pid 440] <... write resumed>) = 4 [pid 439] <... memfd_create resumed>) = 3 [pid 438] ioctl(4, LOOP_SET_FD, 3 [pid 440] close(3 [pid 439] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 438] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 440] <... close resumed>) = 0 [pid 439] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 438] close(4 [pid 440] memfd_create("syzkaller", 0 [pid 439] 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 438] <... close resumed>) = 0 [pid 440] <... memfd_create resumed>) = 3 [pid 439] <... write resumed>) = 262144 [pid 438] close(3 [pid 440] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 440] 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 438] <... close resumed>) = 0 ./strace-static-x86_64: Process 442 attached ./strace-static-x86_64: Process 441 attached ./strace-static-x86_64: Process 443 attached [pid 438] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 442] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 439] munmap(0x7f7bfe3d8000, 262144 [pid 438] <... openat resumed>) = 3 [pid 443] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 442] <... prctl resumed>) = 0 [pid 441] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 440] <... write resumed>) = 262144 [pid 439] <... munmap resumed>) = 0 [pid 438] ioctl(3, BLKSECDISCARD, [0, 0] [pid 443] <... prctl resumed>) = 0 [pid 442] setpgid(0, 0 [pid 441] <... prctl resumed>) = 0 [pid 440] munmap(0x7f7bfe3d8000, 262144 [pid 439] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 438] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 443] setpgid(0, 0 [pid 442] <... setpgid resumed>) = 0 [pid 441] setpgid(0, 0 [pid 440] <... munmap resumed>) = 0 [pid 439] <... openat resumed>) = 4 [pid 438] exit_group(0 [pid 443] <... setpgid resumed>) = 0 [pid 442] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 441] <... setpgid resumed>) = 0 [pid 440] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 439] ioctl(4, LOOP_SET_FD, 3 [pid 438] <... exit_group resumed>) = ? [pid 440] <... openat resumed>) = 4 [pid 439] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 440] ioctl(4, LOOP_SET_FD, 3 [pid 439] ioctl(4, LOOP_CLR_FD [pid 442] <... openat resumed>) = 3 [pid 440] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 439] <... ioctl resumed>) = 0 [pid 438] +++ exited with 0 +++ [pid 443] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 442] write(3, "1000", 4 [pid 441] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 440] ioctl(4, LOOP_CLR_FD [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=438, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 443] <... openat resumed>) = 3 [pid 442] <... write resumed>) = 4 [pid 441] <... openat resumed>) = 3 [pid 440] <... ioctl resumed>) = 0 [pid 443] write(3, "1000", 4 [pid 442] close(3 [pid 441] write(3, "1000", 4 [pid 443] <... write resumed>) = 4 [pid 442] <... close resumed>) = 0 [pid 443] close(3 [pid 441] <... write resumed>) = 4 [pid 443] <... close resumed>) = 0 [pid 442] memfd_create("syzkaller", 0 [pid 441] close(3 [pid 443] memfd_create("syzkaller", 0) = 3 [pid 442] <... memfd_create resumed>) = 3 [pid 441] <... close resumed>) = 0 [pid 439] ioctl(4, LOOP_SET_FD, 3 [pid 443] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 442] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 441] memfd_create("syzkaller", 0 [pid 439] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 443] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 442] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 441] <... memfd_create resumed>) = 3 [pid 440] ioctl(4, LOOP_SET_FD, 3 [pid 439] close(4 [pid 440] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 439] <... close resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 441] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 440] close(4 [pid 439] close(3 [pid 309] <... openat resumed>) = 3 [pid 442] 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 441] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 440] <... close resumed>) = 0 [pid 439] <... close resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 440] close(3 [pid 439] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] <... ioctl resumed>) = 0 [pid 441] 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 440] <... close resumed>) = 0 [pid 439] <... openat resumed>) = 3 [pid 309] close(3 [pid 440] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 439] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] <... close resumed>) = 0 [pid 440] <... openat resumed>) = 3 [pid 439] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 440] ioctl(3, BLKSECDISCARD, [0, 0] [pid 439] exit_group(0 [pid 442] <... write resumed>) = 262144 [pid 440] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 439] <... exit_group resumed>) = ? [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 444 [pid 443] 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 442] munmap(0x7f7bfe3d8000, 262144 [pid 441] <... write resumed>) = 262144 [pid 440] exit_group(0 [pid 439] +++ exited with 0 +++ [pid 440] <... exit_group resumed>) = ? [pid 443] <... write resumed>) = 262144 [pid 442] <... munmap resumed>) = 0 [pid 441] munmap(0x7f7bfe3d8000, 262144 [pid 440] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=439, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 443] munmap(0x7f7bfe3d8000, 262144 [pid 442] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 441] <... munmap resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=440, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] <... openat resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 442] <... openat resumed>) = 4 [pid 441] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 443] <... munmap resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 442] ioctl(4, LOOP_SET_FD, 3 [pid 441] <... openat resumed>) = 4 [pid 443] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 307] close(3 [pid 442] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 441] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... close resumed>) = 0 [pid 443] <... openat resumed>) = 4 [pid 442] ioctl(4, LOOP_CLR_FD [pid 441] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 443] ioctl(4, LOOP_SET_FD, 3 [pid 442] <... ioctl resumed>) = 0 [pid 441] ioctl(4, LOOP_CLR_FD [pid 443] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 441] <... ioctl resumed>) = 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 445 [pid 443] ioctl(4, LOOP_CLR_FD) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 442] ioctl(4, LOOP_SET_FD, 3 [pid 306] <... ioctl resumed>) = 0 [pid 442] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] close(3./strace-static-x86_64: Process 444 attached [pid 442] close(4 [pid 441] ioctl(4, LOOP_SET_FD, 3 [pid 444] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 443] ioctl(4, LOOP_SET_FD, 3 [pid 442] <... close resumed>) = 0 [pid 441] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... close resumed>) = 0 [pid 444] <... prctl resumed>) = 0 [pid 443] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 442] close(3 [pid 441] close(4 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 444] setpgid(0, 0 [pid 443] close(4 [pid 444] <... setpgid resumed>) = 0 [pid 444] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 442] <... close resumed>) = 0 [pid 441] <... close resumed>) = 0 [pid 444] write(3, "1000", 4) = 4 [pid 444] close(3 [pid 443] <... close resumed>) = 0 [pid 442] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 441] close(3 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 446 ./strace-static-x86_64: Process 445 attached [pid 444] <... close resumed>) = 0 [pid 443] close(3 [pid 442] <... openat resumed>) = 3 [pid 444] memfd_create("syzkaller", 0) = 3 [pid 444] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 442] ioctl(3, BLKSECDISCARD, [0, 0] [pid 441] <... close resumed>) = 0 [pid 444] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 445] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 444] 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 443] <... close resumed>) = 0 [pid 442] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 441] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 445] <... prctl resumed>) = 0 [pid 443] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 442] exit_group(0 [pid 441] <... openat resumed>) = 3 [pid 445] setpgid(0, 0 [pid 443] <... openat resumed>) = 3 [pid 442] <... exit_group resumed>) = ? [pid 441] ioctl(3, BLKSECDISCARD, [0, 0] [pid 445] <... setpgid resumed>) = 0 [pid 443] ioctl(3, BLKSECDISCARD, [0, 0] [pid 444] <... write resumed>) = 262144 [pid 442] +++ exited with 0 +++ [pid 445] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 443] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 441] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 443] exit_group(0 [pid 441] exit_group(0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=442, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 445] <... openat resumed>) = 3 [pid 443] <... exit_group resumed>) = ? [pid 441] <... exit_group resumed>) = ? [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 444] munmap(0x7f7bfe3d8000, 262144 [pid 310] <... restart_syscall resumed>) = 0 [pid 444] <... munmap resumed>) = 0 [pid 443] +++ exited with 0 +++ [pid 444] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=443, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 444] <... openat resumed>) = 4 [pid 441] +++ exited with 0 +++ [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR./strace-static-x86_64: Process 446 attached [pid 445] write(3, "1000", 4 [pid 444] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... openat resumed>) = 3 [pid 446] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 445] <... write resumed>) = 4 [pid 444] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] ioctl(3, LOOP_CLR_FD [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=441, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 446] <... prctl resumed>) = 0 [pid 445] close(3 [pid 444] ioctl(4, LOOP_CLR_FD [pid 310] <... ioctl resumed>) = 0 [pid 446] setpgid(0, 0 [pid 445] <... close resumed>) = 0 [pid 444] <... ioctl resumed>) = 0 [pid 310] close(3 [pid 446] <... setpgid resumed>) = 0 [pid 445] memfd_create("syzkaller", 0 [pid 310] <... close resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 446] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 445] <... memfd_create resumed>) = 3 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] <... openat resumed>) = 3 [pid 446] <... openat resumed>) = 3 [pid 445] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 446] write(3, "1000", 4 [pid 445] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 444] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 447 [pid 308] <... ioctl resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 446] <... write resumed>) = 4 [pid 444] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] ioctl(3, LOOP_CLR_FD [pid 446] close(3 [pid 444] close(4 [pid 305] <... ioctl resumed>) = 0 [pid 446] <... close resumed>) = 0 [pid 444] <... close resumed>) = 0 [pid 305] close(3 [pid 446] memfd_create("syzkaller", 0 [pid 445] 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 444] close(3 [pid 308] close(3 [pid 305] <... close resumed>) = 0 [pid 446] <... memfd_create resumed>) = 3 [pid 445] <... write resumed>) = 262144 [pid 444] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 446] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 445] munmap(0x7f7bfe3d8000, 262144 [pid 444] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 446] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 444] <... openat resumed>) = 3 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 448 [pid 446] 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 445] <... munmap resumed>) = 0 [pid 444] ioctl(3, BLKSECDISCARD, [0, 0]./strace-static-x86_64: Process 449 attached ./strace-static-x86_64: Process 447 attached [pid 446] <... write resumed>) = 262144 [pid 445] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 444] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 449 [pid 449] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 447] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 446] munmap(0x7f7bfe3d8000, 262144 [pid 445] <... openat resumed>) = 4 [pid 444] exit_group(0 [pid 449] <... prctl resumed>) = 0 [pid 447] <... prctl resumed>) = 0 [pid 446] <... munmap resumed>) = 0 [pid 445] ioctl(4, LOOP_SET_FD, 3 [pid 444] <... exit_group resumed>) = ? [pid 449] setpgid(0, 0 [pid 447] setpgid(0, 0 [pid 446] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 445] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 444] +++ exited with 0 +++ [pid 449] <... setpgid resumed>) = 0 [pid 447] <... setpgid resumed>) = 0 [pid 446] <... openat resumed>) = 4 [pid 445] ioctl(4, LOOP_CLR_FD [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=444, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 446] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 446] ioctl(4, LOOP_CLR_FD [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 446] <... ioctl resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 446] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 450 [pid 446] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 446] close(4) = 0 [pid 446] close(3) = 0 [pid 446] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 446] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 446] exit_group(0./strace-static-x86_64: Process 448 attached ) = ? [pid 447] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 446] +++ exited with 0 +++ [pid 445] <... ioctl resumed>) = 0 [pid 449] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 448] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 447] <... openat resumed>) = 3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=446, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 449] <... openat resumed>) = 3 [pid 448] <... prctl resumed>) = 0 [pid 447] write(3, "1000", 4 [pid 449] write(3, "1000", 4 [pid 448] setpgid(0, 0 [pid 447] <... write resumed>) = 4 [pid 449] <... write resumed>) = 4 [pid 448] <... setpgid resumed>) = 0 [pid 447] close(3 [pid 449] close(3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 449] <... close resumed>) = 0 [pid 447] <... close resumed>) = 0 [pid 445] ioctl(4, LOOP_SET_FD, 3 [pid 306] <... openat resumed>) = 3 [pid 445] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] ioctl(3, LOOP_CLR_FD [pid 449] memfd_create("syzkaller", 0 [pid 448] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 447] memfd_create("syzkaller", 0 [pid 445] close(4 [pid 306] <... ioctl resumed>) = 0 [pid 449] <... memfd_create resumed>) = 3 [pid 448] <... openat resumed>) = 3 [pid 447] <... memfd_create resumed>) = 3 ./strace-static-x86_64: Process 450 attached [pid 449] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 448] write(3, "1000", 4 [pid 447] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 445] <... close resumed>) = 0 [pid 306] close(3 [pid 450] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 449] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 448] <... write resumed>) = 4 [pid 447] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 445] close(3 [pid 306] <... close resumed>) = 0 [pid 450] <... prctl resumed>) = 0 [pid 448] close(3 [pid 450] setpgid(0, 0 [pid 448] <... close resumed>) = 0 [pid 450] <... setpgid resumed>) = 0 [pid 448] memfd_create("syzkaller", 0 [pid 450] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 449] 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 448] <... memfd_create resumed>) = 3 [pid 450] <... openat resumed>) = 3 [pid 448] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 450] write(3, "1000", 4 [pid 448] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 450] <... write resumed>) = 4 [pid 448] 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 447] 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 445] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 450] close(3 [pid 448] <... write resumed>) = 262144 [pid 447] <... write resumed>) = 262144 [pid 445] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 450] <... close resumed>) = 0 [pid 448] munmap(0x7f7bfe3d8000, 262144 [pid 445] <... openat resumed>) = 3 [pid 450] memfd_create("syzkaller", 0 [pid 449] <... write resumed>) = 262144 [pid 448] <... munmap resumed>) = 0 [pid 447] munmap(0x7f7bfe3d8000, 262144 [pid 445] ioctl(3, BLKSECDISCARD, [0, 0] [pid 450] <... memfd_create resumed>) = 3 [pid 449] munmap(0x7f7bfe3d8000, 262144 [pid 448] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 447] <... munmap resumed>) = 0 [pid 445] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 451 [pid 450] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 449] <... munmap resumed>) = 0 [pid 448] <... openat resumed>) = 4 [pid 447] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 445] exit_group(0 [pid 450] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 449] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 448] ioctl(4, LOOP_SET_FD, 3 [pid 447] <... openat resumed>) = 4 [pid 445] <... exit_group resumed>) = ? [pid 450] 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] <... openat resumed>) = 4 [pid 448] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 447] ioctl(4, LOOP_SET_FD, 3 [pid 445] +++ exited with 0 +++ ./strace-static-x86_64: Process 451 attached [pid 450] <... write resumed>) = 262144 [pid 449] ioctl(4, LOOP_SET_FD, 3 [pid 448] ioctl(4, LOOP_CLR_FD [pid 447] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=445, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 451] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 450] munmap(0x7f7bfe3d8000, 262144 [pid 449] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 448] <... ioctl resumed>) = 0 [pid 447] ioctl(4, LOOP_CLR_FD [pid 451] <... prctl resumed>) = 0 [pid 450] <... munmap resumed>) = 0 [pid 449] ioctl(4, LOOP_CLR_FD [pid 447] <... ioctl resumed>) = 0 [pid 451] setpgid(0, 0 [pid 450] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 449] <... ioctl resumed>) = 0 [pid 451] <... setpgid resumed>) = 0 [pid 450] <... openat resumed>) = 4 [pid 451] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 450] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 451] <... openat resumed>) = 3 [pid 450] ioctl(4, LOOP_CLR_FD) = 0 [pid 448] ioctl(4, LOOP_SET_FD, 3 [pid 451] write(3, "1000", 4 [pid 449] ioctl(4, LOOP_SET_FD, 3 [pid 448] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 447] ioctl(4, LOOP_SET_FD, 3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 451] <... write resumed>) = 4 [pid 449] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 448] close(4 [pid 447] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] <... openat resumed>) = 3 [pid 451] close(3 [pid 449] close(4 [pid 448] <... close resumed>) = 0 [pid 447] close(4 [pid 307] ioctl(3, LOOP_CLR_FD [pid 451] <... close resumed>) = 0 [pid 449] <... close resumed>) = 0 [pid 448] close(3 [pid 447] <... close resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 451] memfd_create("syzkaller", 0 [pid 450] ioctl(4, LOOP_SET_FD, 3 [pid 449] close(3 [pid 448] <... close resumed>) = 0 [pid 447] close(3 [pid 307] close(3 [pid 450] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 448] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 307] <... close resumed>) = 0 [pid 450] close(4 [pid 449] <... close resumed>) = 0 [pid 448] <... openat resumed>) = 3 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 450] <... close resumed>) = 0 [pid 448] ioctl(3, BLKSECDISCARD, [0, 0] [pid 450] close(3 [pid 448] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 447] <... close resumed>) = 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 452 [pid 451] <... memfd_create resumed>) = 3 [pid 450] <... close resumed>) = 0 [pid 449] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 448] exit_group(0 [pid 447] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 451] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 450] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 449] <... openat resumed>) = 3 [pid 448] <... exit_group resumed>) = ? [pid 447] <... openat resumed>) = 3 [pid 451] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 450] <... openat resumed>) = 3 [pid 449] ioctl(3, BLKSECDISCARD, [0, 0] [pid 448] +++ exited with 0 +++ [pid 447] ioctl(3, BLKSECDISCARD, [0, 0] [pid 450] ioctl(3, BLKSECDISCARD, [0, 0] [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=448, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 450] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 450] exit_group(0 [pid 305] <... restart_syscall resumed>) = 0 [pid 450] <... exit_group resumed>) = ? [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] +++ exited with 0 +++ [pid 449] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 447] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=450, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 305] <... ioctl resumed>) = 0 [pid 451] <... write resumed>) = 262144 [pid 309] <... openat resumed>) = 3 [pid 305] close(3 [pid 451] munmap(0x7f7bfe3d8000, 262144 [pid 449] exit_group(0 [pid 447] exit_group(0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 305] <... close resumed>) = 0 [pid 451] <... munmap resumed>) = 0 [pid 449] <... exit_group resumed>) = ? [pid 447] <... exit_group resumed>) = ? [pid 309] <... ioctl resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 451] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 309] close(3 [pid 449] +++ exited with 0 +++ [pid 309] <... close resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 453 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 451] <... openat resumed>) = 4 [pid 447] +++ exited with 0 +++ [pid 451] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 454 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=449, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 451] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=447, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR./strace-static-x86_64: Process 452 attached [pid 451] ioctl(4, LOOP_CLR_FD [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 452] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 451] <... ioctl resumed>) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 452] <... prctl resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 452] setpgid(0, 0 [pid 308] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 454 attached [pid 452] <... setpgid resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 308] close(3 [pid 452] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 310] <... openat resumed>) = 3 [pid 308] <... close resumed>) = 0 [pid 454] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 452] <... openat resumed>) = 3 [pid 451] ioctl(4, LOOP_SET_FD, 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 454] <... prctl resumed>) = 0 [pid 452] write(3, "1000", 4 [pid 451] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] <... ioctl resumed>) = 0 [pid 452] <... write resumed>) = 4 [pid 310] close(3 [pid 452] close(3 [pid 451] close(4 [pid 454] setpgid(0, 0 [pid 310] <... close resumed>) = 0 [pid 454] <... setpgid resumed>) = 0 [pid 452] <... close resumed>) = 0 [pid 451] <... close resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 454] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 452] memfd_create("syzkaller", 0 [pid 451] close(3 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 455 ./strace-static-x86_64: Process 453 attached [pid 452] <... memfd_create resumed>) = 3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 456 [pid 453] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 452] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 453] <... prctl resumed>) = 0 [pid 452] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 451] <... close resumed>) = 0 [pid 454] <... openat resumed>) = 3 [pid 453] setpgid(0, 0 [pid 452] 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 451] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 453] <... setpgid resumed>) = 0 [pid 451] <... openat resumed>) = 3 [pid 453] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 451] ioctl(3, BLKSECDISCARD, [0, 0] [pid 453] <... openat resumed>) = 3 [pid 452] <... write resumed>) = 262144 [pid 451] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 453] write(3, "1000", 4 [pid 451] exit_group(0 [pid 453] <... write resumed>) = 4 [pid 452] munmap(0x7f7bfe3d8000, 262144 [pid 451] <... exit_group resumed>) = ? [pid 453] close(3 [pid 452] <... munmap resumed>) = 0 [pid 453] <... close resumed>) = 0 [pid 453] memfd_create("syzkaller", 0 [pid 452] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 451] +++ exited with 0 +++ [pid 454] write(3, "1000", 4 [pid 453] <... memfd_create resumed>) = 3 [pid 452] <... openat resumed>) = 4 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=451, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 454] <... write resumed>) = 4 [pid 453] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 452] ioctl(4, LOOP_SET_FD, 3 [pid 454] close(3 [pid 453] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 452] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 456 attached [pid 454] <... close resumed>) = 0 [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 452] ioctl(4, LOOP_CLR_FD [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 454] memfd_create("syzkaller", 0 [pid 452] <... ioctl resumed>) = 0 [pid 454] <... memfd_create resumed>) = 3 [pid 306] <... openat resumed>) = 3 [pid 456] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 455 attached [pid 454] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 453] <... write resumed>) = 262144 [pid 306] ioctl(3, LOOP_CLR_FD [pid 456] <... prctl resumed>) = 0 [pid 455] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 454] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 453] munmap(0x7f7bfe3d8000, 262144 [pid 306] <... ioctl resumed>) = 0 [pid 456] setpgid(0, 0 [pid 455] <... prctl resumed>) = 0 [pid 453] <... munmap resumed>) = 0 [pid 452] ioctl(4, LOOP_SET_FD, 3 [pid 455] setpgid(0, 0 [pid 453] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 452] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 455] <... setpgid 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] <... openat resumed>) = 4 [pid 452] close(4 [pid 306] close(3 [pid 456] <... setpgid resumed>) = 0 [pid 455] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 453] ioctl(4, LOOP_SET_FD, 3 [pid 452] <... close resumed>) = 0 [pid 455] <... openat resumed>) = 3 [pid 453] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 452] close(3 [pid 306] <... close resumed>) = 0 [pid 456] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 455] write(3, "1000", 4 [pid 454] <... write resumed>) = 262144 [pid 453] ioctl(4, LOOP_CLR_FD [pid 452] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 456] <... openat resumed>) = 3 [pid 455] <... write resumed>) = 4 [pid 454] munmap(0x7f7bfe3d8000, 262144 [pid 453] <... ioctl resumed>) = 0 [pid 452] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 455] close(3 [pid 454] <... munmap resumed>) = 0 [pid 452] <... openat resumed>) = 3 [pid 456] write(3, "1000", 4) = 4 [pid 455] <... close resumed>) = 0 [pid 454] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 452] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 457 [pid 456] close(3 [pid 455] memfd_create("syzkaller", 0 [pid 454] <... openat resumed>) = 4 [pid 452] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 456] <... close resumed>) = 0 [pid 455] <... memfd_create resumed>) = 3 [pid 454] ioctl(4, LOOP_SET_FD, 3 [pid 452] exit_group(0 [pid 456] memfd_create("syzkaller", 0 [pid 455] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 454] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 453] ioctl(4, LOOP_SET_FD, 3 [pid 452] <... exit_group resumed>) = ? [pid 456] <... memfd_create resumed>) = 3 [pid 455] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 454] ioctl(4, LOOP_CLR_FD [pid 453] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 452] +++ exited with 0 +++ [pid 456] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 455] 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 454] <... ioctl resumed>) = 0 [pid 453] close(4 [pid 456] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 455] <... write resumed>) = 262144 [pid 453] <... close resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=452, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 455] munmap(0x7f7bfe3d8000, 262144 [pid 453] close(3 [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 455] <... munmap resumed>) = 0 [pid 453] <... close resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 455] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 453] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 455] <... openat resumed>) = 4 [pid 453] <... openat resumed>) = 3 [pid 455] ioctl(4, LOOP_SET_FD, 3 [pid 453] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 455] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 453] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] <... openat resumed>) = 3 [pid 455] ioctl(4, LOOP_CLR_FD [pid 453] exit_group(0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 455] <... ioctl resumed>) = 0 [pid 453] <... exit_group resumed>) = ? [pid 307] <... ioctl resumed>) = 0 [pid 453] +++ exited with 0 +++ [pid 307] close(3) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=453, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 455] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 458 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 455] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... openat resumed>) = 3 [pid 455] close(4 [pid 305] ioctl(3, LOOP_CLR_FD [pid 455] <... close resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 455] close(3 [pid 305] close(3 [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 resumed>) = 0 [pid 305] <... close resumed>) = 0 ./strace-static-x86_64: Process 457 attached [pid 455] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 457] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 456] <... write resumed>) = 262144 [pid 455] <... openat resumed>) = 3 [pid 454] ioctl(4, LOOP_SET_FD, 3 [pid 457] <... prctl resumed>) = 0 [pid 456] munmap(0x7f7bfe3d8000, 262144 [pid 455] ioctl(3, BLKSECDISCARD, [0, 0] [pid 454] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 459 [pid 457] setpgid(0, 0 [pid 456] <... munmap resumed>) = 0 [pid 455] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 454] close(4 [pid 457] <... setpgid resumed>) = 0 [pid 456] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 455] exit_group(0 [pid 454] <... close resumed>) = 0 [pid 457] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 456] <... openat resumed>) = 4 [pid 455] <... exit_group resumed>) = ? [pid 454] close(3 [pid 457] <... openat resumed>) = 3 [pid 456] ioctl(4, LOOP_SET_FD, 3 [pid 455] +++ exited with 0 +++ [pid 457] write(3, "1000", 4) = 4 [pid 457] close(3) = 0 [pid 457] memfd_create("syzkaller", 0 [pid 456] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 454] <... close resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=455, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 457] <... memfd_create resumed>) = 3 [pid 456] ioctl(4, LOOP_CLR_FD [pid 454] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000./strace-static-x86_64: Process 459 attached ./strace-static-x86_64: Process 458 attached [pid 457] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 456] <... ioctl resumed>) = 0 [pid 454] <... openat resumed>) = 3 [pid 459] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 458] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 457] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 454] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 459] <... prctl resumed>) = 0 [pid 458] <... prctl resumed>) = 0 [pid 457] 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 454] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] <... openat resumed>) = 3 [pid 459] setpgid(0, 0 [pid 458] setpgid(0, 0 [pid 456] ioctl(4, LOOP_SET_FD, 3 [pid 454] exit_group(0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 459] <... setpgid resumed>) = 0 [pid 458] <... setpgid resumed>) = 0 [pid 457] <... write resumed>) = 262144 [pid 456] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 454] <... exit_group resumed>) = ? [pid 308] <... ioctl resumed>) = 0 [pid 458] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 457] munmap(0x7f7bfe3d8000, 262144 [pid 456] close(4 [pid 458] <... openat resumed>) = 3 [pid 457] <... munmap resumed>) = 0 [pid 458] write(3, "1000", 4 [pid 457] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 454] +++ exited with 0 +++ [pid 308] close(3 [pid 456] <... close resumed>) = 0 [pid 459] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 458] <... write resumed>) = 4 [pid 457] <... openat resumed>) = 4 [pid 308] <... close resumed>) = 0 [pid 458] close(3 [pid 457] ioctl(4, LOOP_SET_FD, 3 [pid 456] close(3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=454, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 459] <... openat resumed>) = 3 [pid 458] <... close resumed>) = 0 [pid 457] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 458] memfd_create("syzkaller", 0 [pid 457] ioctl(4, LOOP_CLR_FD [pid 309] <... openat resumed>) = 3 [pid 458] <... memfd_create resumed>) = 3 [pid 457] <... ioctl resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 458] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 309] <... ioctl resumed>) = 0 [pid 458] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 456] <... close resumed>) = 0 [pid 309] close(3 [pid 459] write(3, "1000", 4 [pid 458] 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] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] <... close resumed>) = 0 [pid 459] <... write resumed>) = 4 [pid 458] <... write resumed>) = 262144 [pid 457] ioctl(4, LOOP_SET_FD, 3 [pid 456] <... openat resumed>) = 3 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 460 [pid 459] close(3 [pid 458] munmap(0x7f7bfe3d8000, 262144 [pid 457] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 456] ioctl(3, BLKSECDISCARD, [0, 0] [pid 459] <... close resumed>) = 0 [pid 458] <... munmap resumed>) = 0 [pid 457] close(4 [pid 456] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 461 [pid 459] memfd_create("syzkaller", 0 [pid 458] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 457] <... close resumed>) = 0 [pid 456] exit_group(0 [pid 459] <... memfd_create resumed>) = 3 [pid 458] <... openat resumed>) = 4 [pid 457] close(3 [pid 456] <... exit_group resumed>) = ? [pid 459] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 458] ioctl(4, LOOP_SET_FD, 3 [pid 457] <... close resumed>) = 0 [pid 458] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 457] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 458] ioctl(4, LOOP_CLR_FD [pid 457] <... openat resumed>) = 3 [pid 458] <... ioctl resumed>) = 0 [pid 457] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 456] +++ exited with 0 +++ [pid 459] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 457] exit_group(0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=456, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 457] <... exit_group resumed>) = ? [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 457] +++ exited with 0 +++ [pid 310] <... restart_syscall resumed>) = 0 [pid 458] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 458] close(4 [pid 310] <... openat resumed>) = 3 [pid 458] <... close resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 458] close(3 [pid 310] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 460 attached [pid 459] 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 458] <... close resumed>) = 0 [pid 310] close(3 [pid 460] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 458] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] <... close resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=457, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 460] <... prctl resumed>) = 0 [pid 458] <... openat resumed>) = 3 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 460] setpgid(0, 0 [pid 459] <... write resumed>) = 262144 [pid 458] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] <... openat resumed>) = 3 [pid 460] <... setpgid resumed>) = 0 [pid 459] munmap(0x7f7bfe3d8000, 262144 [pid 458] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 462 [pid 306] ioctl(3, LOOP_CLR_FD [pid 460] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 458] exit_group(0 [pid 306] <... ioctl resumed>) = 0 [pid 460] <... openat resumed>) = 3 [pid 458] <... exit_group resumed>) = ? [pid 306] close(3 [pid 460] write(3, "1000", 4 [pid 459] <... munmap resumed>) = 0 [pid 458] +++ exited with 0 +++ [pid 306] <... close resumed>) = 0 [pid 460] <... write resumed>) = 4 [pid 459] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=458, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 460] close(3 [pid 459] <... openat resumed>) = 4 [pid 460] <... close resumed>) = 0 [pid 460] memfd_create("syzkaller", 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 460] <... memfd_create resumed>) = 3 [pid 459] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... openat resumed>) = 3 [pid 460] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 459] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] ioctl(3, LOOP_CLR_FD [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 463 [pid 460] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 459] ioctl(4, LOOP_CLR_FD [pid 307] <... ioctl resumed>) = 0 [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 459] <... ioctl resumed>) = 0 [pid 307] close(3 [pid 460] <... write resumed>) = 262144 [pid 307] <... close resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 464 [pid 460] munmap(0x7f7bfe3d8000, 262144./strace-static-x86_64: Process 462 attached ) = 0 [pid 462] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 460] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 462] <... prctl resumed>) = 0 [pid 462] setpgid(0, 0) = 0 [pid 460] ioctl(4, LOOP_SET_FD, 3 [pid 462] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 460] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 462] <... openat resumed>) = 3 [pid 460] ioctl(4, LOOP_CLR_FD./strace-static-x86_64: Process 463 attached [pid 462] write(3, "1000", 4 [pid 460] <... ioctl resumed>) = 0 [pid 463] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 462] <... write resumed>) = 4 [pid 463] <... prctl resumed>) = 0 [pid 462] close(3 [pid 463] setpgid(0, 0 [pid 462] <... close resumed>) = 0 [pid 463] <... setpgid resumed>) = 0 [pid 462] memfd_create("syzkaller", 0 [pid 463] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 462] <... memfd_create resumed>) = 3 [pid 463] <... openat resumed>) = 3 [pid 462] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 463] write(3, "1000", 4 [pid 462] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 463] <... write resumed>) = 4 [pid 462] 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 459] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 464 attached [pid 463] close(3 [pid 460] ioctl(4, LOOP_SET_FD, 3 [pid 459] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 464] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 463] <... close resumed>) = 0 [pid 460] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 459] close(4 [pid 464] <... prctl resumed>) = 0 [pid 463] memfd_create("syzkaller", 0 [pid 460] close(4 [pid 459] <... close resumed>) = 0 [pid 464] setpgid(0, 0 [pid 463] <... memfd_create resumed>) = 3 [pid 460] <... close resumed>) = 0 [pid 459] close(3 [pid 464] <... setpgid resumed>) = 0 [pid 463] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 462] <... write resumed>) = 262144 [pid 460] close(3./strace-static-x86_64: Process 461 attached [pid 464] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 463] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 460] <... close resumed>) = 0 [pid 459] <... close resumed>) = 0 [pid 464] <... openat resumed>) = 3 [pid 463] 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 460] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 459] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 464] write(3, "1000", 4 [pid 463] <... write resumed>) = 262144 [pid 462] munmap(0x7f7bfe3d8000, 262144 [pid 461] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 460] <... openat resumed>) = 3 [pid 459] <... openat resumed>) = 3 [pid 464] <... write resumed>) = 4 [pid 462] <... munmap resumed>) = 0 [pid 461] <... prctl resumed>) = 0 [pid 460] ioctl(3, BLKSECDISCARD, [0, 0] [pid 459] ioctl(3, BLKSECDISCARD, [0, 0] [pid 464] close(3 [pid 463] munmap(0x7f7bfe3d8000, 262144 [pid 462] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 461] setpgid(0, 0 [pid 460] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 459] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 464] <... close resumed>) = 0 [pid 463] <... munmap resumed>) = 0 [pid 462] <... openat resumed>) = 4 [pid 461] <... setpgid resumed>) = 0 [pid 460] exit_group(0 [pid 464] memfd_create("syzkaller", 0 [pid 463] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 462] ioctl(4, LOOP_SET_FD, 3 [pid 461] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 460] <... exit_group resumed>) = ? [pid 459] exit_group(0 [pid 464] <... memfd_create resumed>) = 3 [pid 463] <... openat resumed>) = 4 [pid 462] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 461] <... openat resumed>) = 3 [pid 460] +++ exited with 0 +++ [pid 459] <... exit_group resumed>) = ? [pid 464] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 463] ioctl(4, LOOP_SET_FD, 3 [pid 462] ioctl(4, LOOP_CLR_FD [pid 464] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 463] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 462] <... ioctl resumed>) = 0 [pid 464] 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 463] ioctl(4, LOOP_CLR_FD [pid 461] write(3, "1000", 4 [pid 459] +++ exited with 0 +++ [pid 464] <... write resumed>) = 262144 [pid 463] <... ioctl resumed>) = 0 [pid 461] <... write resumed>) = 4 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=460, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 464] munmap(0x7f7bfe3d8000, 262144 [pid 462] ioctl(4, LOOP_SET_FD, 3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 461] close(3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=459, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 464] <... munmap resumed>) = 0 [pid 462] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] <... openat resumed>) = 3 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 464] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 462] close(4 [pid 464] <... openat resumed>) = 4 [pid 462] <... close resumed>) = 0 [pid 461] <... close resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 305] <... restart_syscall resumed>) = 0 [pid 464] ioctl(4, LOOP_SET_FD, 3 [pid 462] close(3 [pid 308] <... ioctl resumed>) = 0 [pid 464] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 462] <... close resumed>) = 0 [pid 461] memfd_create("syzkaller", 0 [pid 308] close(3 [pid 464] ioctl(4, LOOP_CLR_FD [pid 463] ioctl(4, LOOP_SET_FD, 3 [pid 462] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 464] <... ioctl resumed>) = 0 [pid 463] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 462] <... openat resumed>) = 3 [pid 461] <... memfd_create resumed>) = 3 [pid 308] <... close resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 463] close(4 [pid 462] ioctl(3, BLKSECDISCARD, [0, 0] [pid 461] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] ioctl(3, LOOP_CLR_FD [pid 463] <... close resumed>) = 0 [pid 462] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 461] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 305] <... ioctl resumed>) = 0 [pid 463] close(3 [pid 462] exit_group(0 [pid 305] close(3 [pid 463] <... close resumed>) = 0 [pid 462] <... exit_group resumed>) = ? [pid 305] <... close resumed>) = 0 [pid 464] ioctl(4, LOOP_SET_FD, 3 [pid 463] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 462] +++ exited with 0 +++ [pid 461] 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 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 464] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 463] <... openat resumed>) = 3 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 465 [pid 464] close(4 [pid 463] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=462, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 466 [pid 464] <... close resumed>) = 0 [pid 463] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 464] close(3 [pid 463] exit_group(0 [pid 461] <... write resumed>) = 262144 [pid 310] <... openat resumed>) = 3 [pid 464] <... close resumed>) = 0 [pid 463] <... exit_group resumed>) = ? [pid 461] munmap(0x7f7bfe3d8000, 262144 [pid 310] ioctl(3, LOOP_CLR_FD [pid 464] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 463] +++ exited with 0 +++ [pid 310] <... ioctl resumed>) = 0 [pid 464] <... openat resumed>) = 3 [pid 461] <... munmap resumed>) = 0 [pid 310] close(3 [pid 464] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] <... close resumed>) = 0 [pid 464] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 461] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=463, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 465 attached [pid 464] exit_group(0 [pid 461] <... openat resumed>) = 4 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 465] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 464] <... exit_group resumed>) = ? [pid 461] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 467 [pid 465] <... prctl resumed>) = 0 [pid 464] +++ exited with 0 +++ [pid 461] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... restart_syscall resumed>) = 0 [pid 465] setpgid(0, 0 [pid 461] ioctl(4, LOOP_CLR_FD [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=464, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 465] <... setpgid resumed>) = 0 [pid 461] <... ioctl resumed>) = 0 [pid 465] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 465] write(3, "1000", 4 [pid 307] <... openat resumed>) = 3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 465] <... write resumed>) = 4 [pid 307] ioctl(3, LOOP_CLR_FD [pid 465] close(3 [pid 307] <... ioctl resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 465] <... close resumed>) = 0 [pid 307] close(3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 465] memfd_create("syzkaller", 0 [pid 307] <... close resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 465] <... memfd_create resumed>) = 3 [pid 461] ioctl(4, LOOP_SET_FD, 3 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] close(3./strace-static-x86_64: Process 466 attached [pid 465] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 461] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... close resumed>) = 0 [pid 466] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 465] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 461] close(4 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 468 [pid 466] <... prctl resumed>) = 0 [pid 465] 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 461] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 466] setpgid(0, 0 [pid 465] <... write resumed>) = 262144 [pid 461] close(3 [pid 466] <... setpgid resumed>) = 0 [pid 466] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 466] write(3, "1000", 4) = 4 [pid 466] close(3) = 0 [pid 466] memfd_create("syzkaller", 0) = 3 [pid 466] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 465] munmap(0x7f7bfe3d8000, 262144 [pid 466] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 465] <... munmap resumed>) = 0 [pid 461] <... close resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 469 ./strace-static-x86_64: Process 468 attached [pid 466] 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 465] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 461] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000./strace-static-x86_64: Process 467 attached [pid 465] <... openat resumed>) = 4 [pid 461] <... openat resumed>) = 3 [pid 467] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 465] ioctl(4, LOOP_SET_FD, 3 [pid 461] ioctl(3, BLKSECDISCARD, [0, 0] [pid 468] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 467] <... prctl resumed>) = 0 [pid 466] <... write resumed>) = 262144 [pid 465] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 461] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 467] setpgid(0, 0 [pid 465] ioctl(4, LOOP_CLR_FD [pid 461] exit_group(0 [pid 467] <... setpgid resumed>) = 0 [pid 465] <... ioctl resumed>) = 0 [pid 461] <... exit_group resumed>) = ? [pid 467] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 467] write(3, "1000", 4) = 4 [pid 467] close(3) = 0 [pid 467] memfd_create("syzkaller", 0) = 3 [pid 461] +++ exited with 0 +++ [pid 467] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=461, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 467] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 466] munmap(0x7f7bfe3d8000, 262144 [pid 468] <... prctl resumed>) = 0 [pid 468] setpgid(0, 0 [pid 467] 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] <... munmap resumed>) = 0 [pid 466] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 465] ioctl(4, LOOP_SET_FD, 3 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 466] <... openat resumed>) = 4 [pid 465] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] <... openat resumed>) = 3 ./strace-static-x86_64: Process 469 attached [pid 466] ioctl(4, LOOP_SET_FD, 3 [pid 465] close(4 [pid 309] ioctl(3, LOOP_CLR_FD [pid 469] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 466] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 465] <... close resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 469] <... prctl resumed>) = 0 [pid 466] ioctl(4, LOOP_CLR_FD [pid 465] close(3 [pid 309] close(3 [pid 469] setpgid(0, 0 [pid 466] <... ioctl resumed>) = 0 [pid 465] <... close resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 469] <... setpgid resumed>) = 0 [pid 467] <... write resumed>) = 262144 [pid 465] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 469] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 465] <... openat resumed>) = 3 [pid 469] <... openat resumed>) = 3 [pid 465] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 470 [pid 469] write(3, "1000", 4 [pid 467] munmap(0x7f7bfe3d8000, 262144 [pid 465] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 469] <... write resumed>) = 4 [pid 467] <... munmap resumed>) = 0 [pid 465] exit_group(0 [pid 469] close(3 [pid 467] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 465] <... exit_group resumed>) = ? [pid 469] <... close resumed>) = 0 [pid 468] <... setpgid resumed>) = 0 [pid 467] <... openat resumed>) = 4 [pid 466] ioctl(4, LOOP_SET_FD, 3 [pid 465] +++ exited with 0 +++ [pid 469] memfd_create("syzkaller", 0 [pid 467] ioctl(4, LOOP_SET_FD, 3 [pid 466] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=465, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 469] <... memfd_create resumed>) = 3 [pid 467] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 466] close(4 [pid 469] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 468] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 467] ioctl(4, LOOP_CLR_FD [pid 466] <... close resumed>) = 0 [pid 469] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 467] <... ioctl resumed>) = 0 [pid 466] close(3 [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] <... openat resumed>) = 3 [pid 466] <... close resumed>) = 0 ./strace-static-x86_64: Process 470 attached [pid 468] write(3, "1000", 4 [pid 466] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 470] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 469] <... write resumed>) = 262144 [pid 468] <... write resumed>) = 4 [pid 466] <... openat resumed>) = 3 [pid 470] <... prctl resumed>) = 0 [pid 468] close(3 [pid 467] ioctl(4, LOOP_SET_FD, 3 [pid 466] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 469] munmap(0x7f7bfe3d8000, 262144 [pid 467] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 466] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 470] setpgid(0, 0 [pid 469] <... munmap resumed>) = 0 [pid 468] <... close resumed>) = 0 [pid 467] close(4 [pid 466] exit_group(0 [pid 308] <... openat resumed>) = 3 [pid 469] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 467] <... close resumed>) = 0 [pid 466] <... exit_group resumed>) = ? [pid 470] <... setpgid resumed>) = 0 [pid 469] <... openat resumed>) = 4 [pid 468] memfd_create("syzkaller", 0 [pid 467] close(3 [pid 466] +++ exited with 0 +++ [pid 308] ioctl(3, LOOP_CLR_FD [pid 470] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 469] ioctl(4, LOOP_SET_FD, 3 [pid 468] <... memfd_create resumed>) = 3 [pid 467] <... close resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=466, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 469] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 467] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 469] ioctl(4, LOOP_CLR_FD [pid 467] <... openat resumed>) = 3 [pid 469] <... ioctl resumed>) = 0 [pid 467] ioctl(3, BLKSECDISCARD, [0, 0] [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 467] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] <... openat resumed>) = 3 [pid 467] exit_group(0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 467] <... exit_group resumed>) = ? [pid 305] <... ioctl resumed>) = 0 [pid 470] <... openat resumed>) = 3 [pid 468] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 467] +++ exited with 0 +++ [pid 308] <... ioctl resumed>) = 0 [pid 305] close(3 [pid 468] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=467, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] close(3 [pid 305] <... close resumed>) = 0 [pid 469] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 469] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 469] close(4 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 471 [pid 469] <... close resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 469] close(3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 470] write(3, "1000", 4 [pid 469] <... close 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 310] <... ioctl resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 469] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] close(3 [pid 469] <... openat resumed>) = 3 [pid 310] <... close resumed>) = 0 [pid 469] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 469] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 469] exit_group(0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 473 [pid 469] <... exit_group resumed>) = ? [pid 470] <... write resumed>) = 4 [pid 469] +++ exited with 0 +++ [pid 468] <... write resumed>) = 262144 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 472 [pid 468] munmap(0x7f7bfe3d8000, 262144./strace-static-x86_64: Process 472 attached ) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=469, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 468] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 472] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 468] <... openat resumed>) = 4 [pid 306] <... openat resumed>) = 3 [pid 472] <... prctl resumed>) = 0 [pid 468] ioctl(4, LOOP_SET_FD, 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 472] setpgid(0, 0 [pid 306] <... ioctl resumed>) = 0 [pid 468] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] close(3 [pid 472] <... setpgid resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 468] ioctl(4, LOOP_CLR_FD [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 472] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 468] <... ioctl resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 474 [pid 472] <... openat resumed>) = 3 ./strace-static-x86_64: Process 473 attached [pid 473] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 472] write(3, "1000", 4) = 4 [pid 470] close(3 [pid 472] close(3) = 0 [pid 473] <... prctl resumed>) = 0 [pid 473] setpgid(0, 0) = 0 [pid 472] memfd_create("syzkaller", 0 [pid 473] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 472] <... memfd_create resumed>) = 3 [pid 470] <... close resumed>) = 0 [pid 473] <... openat resumed>) = 3 [pid 472] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 468] ioctl(4, LOOP_SET_FD, 3 [pid 473] write(3, "1000", 4 [pid 472] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 470] memfd_create("syzkaller", 0 [pid 468] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 473] <... write resumed>) = 4 [pid 470] <... memfd_create resumed>) = 3 [pid 468] close(4 [pid 473] close(3 [pid 470] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 468] <... close resumed>) = 0 [pid 473] <... close resumed>) = 0 [pid 470] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 468] close(3./strace-static-x86_64: Process 471 attached [pid 473] memfd_create("syzkaller", 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 473] <... memfd_create resumed>) = 3 [pid 471] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 473] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 471] <... prctl resumed>) = 0 [pid 468] <... close resumed>) = 0 [pid 473] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 471] setpgid(0, 0 [pid 468] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [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 471] <... setpgid resumed>) = 0 [pid 470] 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] <... openat resumed>) = 3 ./strace-static-x86_64: Process 474 attached [pid 473] <... write resumed>) = 262144 [pid 472] <... write resumed>) = 262144 [pid 471] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 470] <... write resumed>) = 262144 [pid 468] ioctl(3, BLKSECDISCARD, [0, 0] [pid 474] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 471] <... openat resumed>) = 3 [pid 470] munmap(0x7f7bfe3d8000, 262144 [pid 468] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 474] <... prctl resumed>) = 0 [pid 471] write(3, "1000", 4 [pid 468] exit_group(0 [pid 474] setpgid(0, 0 [pid 472] munmap(0x7f7bfe3d8000, 262144 [pid 471] <... write resumed>) = 4 [pid 468] <... exit_group resumed>) = ? [pid 474] <... setpgid resumed>) = 0 [pid 472] <... munmap resumed>) = 0 [pid 471] close(3 [pid 474] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 473] munmap(0x7f7bfe3d8000, 262144 [pid 472] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 471] <... close resumed>) = 0 [pid 474] <... openat resumed>) = 3 [pid 473] <... munmap resumed>) = 0 [pid 472] <... openat resumed>) = 4 [pid 471] memfd_create("syzkaller", 0 [pid 468] +++ exited with 0 +++ [pid 474] write(3, "1000", 4 [pid 473] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 472] ioctl(4, LOOP_SET_FD, 3 [pid 471] <... memfd_create resumed>) = 3 [pid 470] <... munmap resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=468, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 474] <... write resumed>) = 4 [pid 473] <... openat resumed>) = 4 [pid 472] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 471] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 474] close(3 [pid 473] ioctl(4, LOOP_SET_FD, 3 [pid 472] ioctl(4, LOOP_CLR_FD [pid 471] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 470] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 474] <... close resumed>) = 0 [pid 473] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 472] <... ioctl resumed>) = 0 [pid 471] 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 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 474] memfd_create("syzkaller", 0 [pid 473] ioctl(4, LOOP_CLR_FD [pid 471] <... write resumed>) = 262144 [pid 307] <... openat resumed>) = 3 [pid 474] <... memfd_create resumed>) = 3 [pid 473] <... ioctl resumed>) = 0 [pid 471] munmap(0x7f7bfe3d8000, 262144 [pid 307] ioctl(3, LOOP_CLR_FD [pid 474] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 471] <... munmap resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 474] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 471] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 307] close(3 [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 471] <... openat resumed>) = 4 [pid 307] <... close resumed>) = 0 [pid 474] <... write resumed>) = 262144 [pid 473] ioctl(4, LOOP_SET_FD, 3 [pid 472] ioctl(4, LOOP_SET_FD, 3 [pid 471] ioctl(4, LOOP_SET_FD, 3 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 474] munmap(0x7f7bfe3d8000, 262144 [pid 473] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 472] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 471] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 470] <... openat resumed>) = 4 [pid 474] <... munmap resumed>) = 0 [pid 473] close(4 [pid 472] close(4 [pid 471] ioctl(4, LOOP_CLR_FD [pid 470] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 475 [pid 474] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 473] <... close resumed>) = 0 [pid 472] <... close resumed>) = 0 [pid 471] <... ioctl resumed>) = 0 [pid 474] <... openat resumed>) = 4 [pid 473] close(3 [pid 472] close(3 [pid 470] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 474] ioctl(4, LOOP_SET_FD, 3 [pid 473] <... close resumed>) = 0 [pid 472] <... close resumed>) = 0 [pid 470] ioctl(4, LOOP_CLR_FD [pid 474] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 473] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 472] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 470] <... ioctl resumed>) = 0 [pid 474] ioctl(4, LOOP_CLR_FD [pid 473] <... openat resumed>) = 3 [pid 472] <... openat resumed>) = 3 [pid 474] <... ioctl resumed>) = 0 [pid 473] ioctl(3, BLKSECDISCARD, [0, 0] [pid 472] ioctl(3, BLKSECDISCARD, [0, 0] [pid 473] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 472] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 473] exit_group(0 [pid 472] exit_group(0 [pid 471] ioctl(4, LOOP_SET_FD, 3 [pid 473] <... exit_group resumed>) = ? [pid 472] <... exit_group resumed>) = ? [pid 471] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 473] +++ exited with 0 +++ [pid 472] +++ exited with 0 +++ [pid 471] close(4 [pid 474] ioctl(4, LOOP_SET_FD, 3 [pid 471] <... close resumed>) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=473, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 474] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 471] close(3 [pid 470] ioctl(4, LOOP_SET_FD, 3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=472, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 474] close(4 [pid 471] <... close resumed>) = 0 [pid 470] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 474] <... close resumed>) = 0 [pid 471] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 470] close(4 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 474] close(3 [pid 471] <... openat resumed>) = 3 [pid 470] <... close resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 474] <... close resumed>) = 0 [pid 471] ioctl(3, BLKSECDISCARD, [0, 0] [pid 470] close(3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 474] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 471] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] <... ioctl resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 474] <... openat resumed>) = 3 [pid 471] exit_group(0 [pid 310] close(3 [pid 474] ioctl(3, BLKSECDISCARD, [0, 0] [pid 471] <... exit_group resumed>) = ? [pid 310] <... close resumed>) = 0 [pid 474] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 471] +++ exited with 0 +++ [pid 470] <... close resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 475 attached [pid 474] exit_group(0 [pid 470] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] <... ioctl resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=471, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 474] <... exit_group resumed>) = ? [pid 470] <... openat resumed>) = 3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 476 [pid 308] close(3 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 475] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 474] +++ exited with 0 +++ [pid 470] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] <... close resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 470] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 470] exit_group(0 [pid 305] openat(AT_FDCWD, "/dev/loop0", 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 [pid 475] <... prctl resumed>) = 0 [pid 470] <... exit_group resumed>) = ? [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=474, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 478 ./strace-static-x86_64: Process 477 attached [pid 477] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 470] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=470, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 477 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 306] <... restart_syscall resumed>) = 0 [pid 477] <... prctl resumed>) = 0 [pid 477] setpgid(0, 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 477] <... setpgid resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 309] <... restart_syscall resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 306] close(3 [pid 475] setpgid(0, 0 [pid 306] <... close resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 480 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 479 [pid 477] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 475] <... setpgid resumed>) = 0 [pid 477] write(3, "1000", 4) = 4 [pid 477] close(3) = 0 [pid 477] memfd_create("syzkaller", 0) = 3 [pid 475] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 477] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 475] <... openat resumed>) = 3 [pid 477] 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 475] write(3, "1000", 4) = 4 [pid 475] close(3./strace-static-x86_64: Process 476 attached ) = 0 [pid 476] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 476] setpgid(0, 0 [pid 475] memfd_create("syzkaller", 0 [pid 476] <... setpgid resumed>) = 0 [pid 476] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 475] <... memfd_create resumed>) = 3 [pid 476] write(3, "1000", 4) = 4 [pid 476] close(3) = 0 [pid 475] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 477] <... write resumed>) = 262144 [pid 476] memfd_create("syzkaller", 0 [pid 475] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 476] <... memfd_create resumed>) = 3 ./strace-static-x86_64: Process 479 attached [pid 476] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 479] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 476] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 479] <... prctl resumed>) = 0 [pid 475] 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 479] setpgid(0, 0./strace-static-x86_64: Process 480 attached ) = 0 [pid 480] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 479] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 480] <... prctl resumed>) = 0 [pid 479] <... openat resumed>) = 3 [pid 477] munmap(0x7f7bfe3d8000, 262144 [pid 476] 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 480] setpgid(0, 0 [pid 479] write(3, "1000", 4 [pid 477] <... munmap resumed>) = 0 [pid 475] <... write resumed>) = 262144 [pid 480] <... setpgid resumed>) = 0 [pid 479] <... write resumed>) = 4 [pid 477] openat(AT_FDCWD, "/dev/loop3", O_RDWR./strace-static-x86_64: Process 478 attached [pid 480] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 479] close(3 [pid 477] <... openat resumed>) = 4 [pid 475] munmap(0x7f7bfe3d8000, 262144 [pid 480] <... openat resumed>) = 3 [pid 479] <... close resumed>) = 0 [pid 477] ioctl(4, LOOP_SET_FD, 3 [pid 476] <... write resumed>) = 262144 [pid 480] write(3, "1000", 4 [pid 479] memfd_create("syzkaller", 0 [pid 478] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 477] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 475] <... munmap resumed>) = 0 [pid 480] <... write resumed>) = 4 [pid 479] <... memfd_create resumed>) = 3 [pid 477] ioctl(4, LOOP_CLR_FD [pid 476] munmap(0x7f7bfe3d8000, 262144 [pid 480] close(3 [pid 479] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 477] <... ioctl resumed>) = 0 [pid 476] <... munmap resumed>) = 0 [pid 480] <... close resumed>) = 0 [pid 479] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 476] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 480] memfd_create("syzkaller", 0 [pid 479] 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 478] <... prctl resumed>) = 0 [pid 476] <... openat resumed>) = 4 [pid 475] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 480] <... memfd_create resumed>) = 3 [pid 479] <... write resumed>) = 262144 [pid 478] setpgid(0, 0 [pid 476] ioctl(4, LOOP_SET_FD, 3 [pid 475] <... openat resumed>) = 4 [pid 480] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 477] ioctl(4, LOOP_SET_FD, 3 [pid 476] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 475] ioctl(4, LOOP_SET_FD, 3 [pid 480] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 479] munmap(0x7f7bfe3d8000, 262144 [pid 477] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 476] ioctl(4, LOOP_CLR_FD [pid 475] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 480] 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 479] <... munmap resumed>) = 0 [pid 478] <... setpgid resumed>) = 0 [pid 477] close(4 [pid 476] <... ioctl resumed>) = 0 [pid 475] ioctl(4, LOOP_CLR_FD [pid 480] <... write resumed>) = 262144 [pid 479] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 478] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 477] <... close resumed>) = 0 [pid 480] munmap(0x7f7bfe3d8000, 262144 [pid 479] <... openat resumed>) = 4 [pid 477] close(3 [pid 480] <... munmap resumed>) = 0 [pid 479] ioctl(4, LOOP_SET_FD, 3 [pid 477] <... close resumed>) = 0 [pid 480] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 479] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 477] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 476] ioctl(4, LOOP_SET_FD, 3 [pid 480] <... openat resumed>) = 4 [pid 479] ioctl(4, LOOP_CLR_FD [pid 477] <... openat resumed>) = 3 [pid 476] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 480] ioctl(4, LOOP_SET_FD, 3 [pid 479] <... ioctl resumed>) = 0 [pid 477] ioctl(3, BLKSECDISCARD, [0, 0] [pid 480] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 477] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 476] close(4 [pid 480] ioctl(4, LOOP_CLR_FD [pid 477] exit_group(0 [pid 476] <... close resumed>) = 0 [pid 480] <... ioctl resumed>) = 0 [pid 477] <... exit_group resumed>) = ? [pid 476] close(3 [pid 477] +++ exited with 0 +++ [pid 476] <... close resumed>) = 0 [pid 479] ioctl(4, LOOP_SET_FD, 3 [pid 476] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 479] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 476] <... openat resumed>) = 3 [pid 479] close(4 [pid 476] ioctl(3, BLKSECDISCARD, [0, 0] [pid 479] <... close resumed>) = 0 [pid 476] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 479] close(3 [pid 476] exit_group(0 [pid 479] <... close resumed>) = 0 [pid 478] <... openat resumed>) = 3 [pid 476] <... exit_group resumed>) = ? [pid 475] <... ioctl resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=477, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 480] ioctl(4, LOOP_SET_FD, 3 [pid 479] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 478] write(3, "1000", 4 [pid 476] +++ exited with 0 +++ [pid 480] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 479] <... openat resumed>) = 3 [pid 480] close(4 [pid 479] ioctl(3, BLKSECDISCARD, [0, 0] [pid 478] <... write resumed>) = 4 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=476, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 480] <... close resumed>) = 0 [pid 479] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 480] close(3 [pid 479] exit_group(0 [pid 478] close(3 [pid 310] <... openat resumed>) = 3 [pid 480] <... close resumed>) = 0 [pid 479] <... exit_group resumed>) = ? [pid 310] ioctl(3, LOOP_CLR_FD [pid 480] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 479] +++ exited with 0 +++ [pid 478] <... close resumed>) = 0 [pid 475] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... ioctl resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 480] <... openat resumed>) = 3 [pid 310] close(3 [pid 480] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] <... close resumed>) = 0 [pid 480] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 480] exit_group(0 [pid 478] memfd_create("syzkaller", 0 [pid 475] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] <... openat resumed>) = 3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=479, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 480] <... exit_group resumed>) = ? [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 481 [pid 480] +++ exited with 0 +++ [pid 478] <... memfd_create resumed>) = 3 [pid 475] close(4 [pid 308] ioctl(3, LOOP_CLR_FD [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=480, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 478] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 475] <... close resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] <... ioctl resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 478] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 475] close(3 [pid 309] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] close(3 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 482 ./strace-static-x86_64: Process 482 attached [pid 482] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 475] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 482] <... prctl resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 482] setpgid(0, 0) = 0 [pid 482] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 482] write(3, "1000", 4) = 4 [pid 482] close(3) = 0 [pid 482] memfd_create("syzkaller", 0) = 3 [pid 482] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [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 482] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 475] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 483 [pid 478] <... write resumed>) = 262144 [pid 306] <... openat resumed>) = 3 [pid 475] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 475] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] close(3) = 0 [pid 478] munmap(0x7f7bfe3d8000, 262144 [pid 475] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 482] 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 475] exit_group(0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 484 [pid 478] <... munmap resumed>) = 0 [pid 475] <... exit_group resumed>) = ? [pid 475] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=475, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 478] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 478] <... openat resumed>) = 4 [pid 478] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 483 attached ) = -1 EBUSY (Device or resource busy) [pid 307] <... restart_syscall resumed>) = 0 [pid 478] ioctl(4, LOOP_CLR_FD [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 478] <... ioctl resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 485 [pid 478] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 478] close(4 [pid 483] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 478] <... close resumed>) = 0 [pid 483] <... prctl resumed>) = 0 [pid 482] <... write resumed>) = 262144 [pid 478] close(3 [pid 483] setpgid(0, 0) = 0 [pid 483] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 482] munmap(0x7f7bfe3d8000, 262144 [pid 478] <... close resumed>) = 0 [pid 482] <... munmap resumed>) = 0 [pid 483] write(3, "1000", 4) = 4 [pid 483] close(3) = 0 [pid 478] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 478] ioctl(3, BLKSECDISCARD, [0, 0] [pid 483] memfd_create("syzkaller", 0 [pid 478] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 482] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 483] <... memfd_create resumed>) = 3 [pid 478] exit_group(0) = ? [pid 482] <... openat resumed>) = 4 [pid 482] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 482] ioctl(4, LOOP_CLR_FD) = 0 [pid 483] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 478] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=478, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 482] ioctl(4, LOOP_SET_FD, 3 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 482] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... openat resumed>) = 3 [pid 482] close(4 [pid 305] ioctl(3, LOOP_CLR_FD [pid 482] <... close resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 482] close(3 [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 484 attached [pid 482] <... close resumed>) = 0 [pid 484] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 486 [pid 484] <... prctl resumed>) = 0 [pid 484] setpgid(0, 0 [pid 483] 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 484] <... setpgid resumed>) = 0 [pid 482] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 484] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 482] <... openat resumed>) = 3 [pid 484] <... openat resumed>) = 3 [pid 482] ioctl(3, BLKSECDISCARD, [0, 0] [pid 484] write(3, "1000", 4 [pid 482] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 484] <... write resumed>) = 4 [pid 482] exit_group(0 [pid 484] close(3 [pid 482] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 485 attached ./strace-static-x86_64: Process 481 attached [pid 484] <... close resumed>) = 0 [pid 482] +++ exited with 0 +++ [pid 484] memfd_create("syzkaller", 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=482, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 484] <... memfd_create resumed>) = 3 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 484] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 483] <... write resumed>) = 262144 [pid 485] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 484] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 309] <... restart_syscall resumed>) = 0 [pid 485] <... prctl resumed>) = 0 [pid 484] 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 483] munmap(0x7f7bfe3d8000, 262144 [pid 481] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 485] setpgid(0, 0 [pid 484] <... write resumed>) = 262144 [pid 483] <... munmap resumed>) = 0 [pid 481] <... prctl resumed>) = 0 [pid 483] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 485] <... setpgid resumed>) = 0 [pid 483] <... openat resumed>) = 4 [pid 309] <... openat resumed>) = 3 [pid 483] ioctl(4, LOOP_SET_FD, 3 [pid 485] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 309] ioctl(3, LOOP_CLR_FD [pid 481] setpgid(0, 0 [pid 483] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] <... ioctl resumed>) = 0 [pid 483] ioctl(4, LOOP_CLR_FD [pid 309] close(3 [pid 485] <... openat resumed>) = 3 [pid 483] <... ioctl resumed>) = 0 [pid 481] <... setpgid resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 484] munmap(0x7f7bfe3d8000, 262144 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 485] write(3, "1000", 4 [pid 484] <... munmap resumed>) = 0 [pid 481] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 486 attached [pid 485] <... write resumed>) = 4 [pid 484] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 487 [pid 486] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 485] close(3 [pid 484] <... openat resumed>) = 4 [pid 481] <... openat resumed>) = 3 [pid 486] <... prctl resumed>) = 0 [pid 484] ioctl(4, LOOP_SET_FD, 3 [pid 486] setpgid(0, 0 [pid 485] <... close resumed>) = 0 [pid 484] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 481] write(3, "1000", 4 [pid 486] <... setpgid resumed>) = 0 [pid 484] ioctl(4, LOOP_CLR_FD [pid 483] ioctl(4, LOOP_SET_FD, 3 [pid 486] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 485] memfd_create("syzkaller", 0 [pid 484] <... ioctl resumed>) = 0 [pid 483] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 481] <... write resumed>) = 4 [pid 486] <... openat resumed>) = 3 [pid 483] close(4 [pid 486] write(3, "1000", 4 [pid 483] <... close resumed>) = 0 [pid 486] <... write resumed>) = 4 [pid 483] close(3 [pid 486] close(3 [pid 485] <... memfd_create resumed>) = 3 [pid 483] <... close resumed>) = 0 [pid 481] close(3 [pid 486] <... close resumed>) = 0 [pid 485] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 484] ioctl(4, LOOP_SET_FD, 3 [pid 483] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 481] <... close resumed>) = 0 [pid 486] memfd_create("syzkaller", 0 [pid 485] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 484] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 483] <... openat resumed>) = 3 [pid 486] <... memfd_create resumed>) = 3 [pid 484] close(4 [pid 483] ioctl(3, BLKSECDISCARD, [0, 0] [pid 486] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 484] <... close resumed>) = 0 [pid 483] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 486] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 484] close(3 [pid 483] exit_group(0 [pid 481] memfd_create("syzkaller", 0 [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] 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 484] <... close resumed>) = 0 [pid 483] <... exit_group resumed>) = ? [pid 486] <... write resumed>) = 262144 [pid 485] <... write resumed>) = 262144 [pid 484] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 483] +++ exited with 0 +++ [pid 481] <... memfd_create resumed>) = 3 [pid 485] munmap(0x7f7bfe3d8000, 262144 [pid 484] <... openat resumed>) = 3 [pid 481] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 487 attached [pid 486] munmap(0x7f7bfe3d8000, 262144 [pid 484] ioctl(3, BLKSECDISCARD, [0, 0] [pid 481] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 487] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 486] <... munmap resumed>) = 0 [pid 485] <... munmap resumed>) = 0 [pid 484] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 487] <... prctl resumed>) = 0 [pid 486] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 484] exit_group(0 [pid 487] setpgid(0, 0 [pid 486] <... openat resumed>) = 4 [pid 484] <... exit_group resumed>) = ? [pid 487] <... setpgid resumed>) = 0 [pid 486] ioctl(4, LOOP_SET_FD, 3 [pid 485] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 484] +++ exited with 0 +++ [pid 481] 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 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=483, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 487] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 486] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 487] <... openat resumed>) = 3 [pid 486] ioctl(4, LOOP_CLR_FD [pid 487] write(3, "1000", 4 [pid 486] <... ioctl resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=484, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 487] <... write resumed>) = 4 [pid 308] ioctl(3, LOOP_CLR_FD [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 308] <... ioctl resumed>) = 0 [pid 487] close(3 [pid 485] <... openat resumed>) = 4 [pid 308] close(3 [pid 487] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 485] ioctl(4, LOOP_SET_FD, 3 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 487] memfd_create("syzkaller", 0) = 3 [pid 487] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 487] 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] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 481] <... write resumed>) = 262144 [pid 306] <... restart_syscall resumed>) = 0 [pid 487] <... write resumed>) = 262144 [pid 486] ioctl(4, LOOP_SET_FD, 3 [pid 485] ioctl(4, LOOP_CLR_FD [pid 481] munmap(0x7f7bfe3d8000, 262144 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 488 [pid 486] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 486] close(4 [pid 485] <... ioctl resumed>) = 0 [pid 486] <... close resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 481] <... munmap resumed>) = 0 [pid 486] close(3 [pid 306] <... openat resumed>) = 3 [pid 486] <... close resumed>) = 0 [pid 481] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 306] ioctl(3, LOOP_CLR_FD [pid 486] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 306] <... ioctl resumed>) = 0 [pid 487] munmap(0x7f7bfe3d8000, 262144 [pid 486] <... openat resumed>) = 3 [pid 485] ioctl(4, LOOP_SET_FD, 3 [pid 481] <... openat resumed>) = 4 [pid 306] close(3 [pid 487] <... munmap resumed>) = 0 [pid 486] ioctl(3, BLKSECDISCARD, [0, 0] [pid 485] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 481] ioctl(4, LOOP_SET_FD, 3 [pid 487] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 486] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 485] close(4 [pid 481] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... close resumed>) = 0 [pid 487] <... openat resumed>) = 4 [pid 486] exit_group(0 [pid 485] <... close resumed>) = 0 [pid 481] ioctl(4, LOOP_CLR_FD [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 488 attached [pid 487] ioctl(4, LOOP_SET_FD, 3 [pid 486] <... exit_group resumed>) = ? [pid 485] close(3 [pid 481] <... ioctl resumed>) = 0 [pid 488] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 487] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 486] +++ exited with 0 +++ [pid 488] <... prctl resumed>) = 0 [pid 487] ioctl(4, LOOP_CLR_FD [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=486, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 488] setpgid(0, 0 [pid 487] <... ioctl resumed>) = 0 [pid 488] <... setpgid resumed>) = 0 [pid 488] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 488] <... openat resumed>) = 3 [pid 485] <... close resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 489 [pid 305] <... openat resumed>) = 3 [pid 488] write(3, "1000", 4 [pid 485] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] ioctl(3, LOOP_CLR_FD [pid 488] <... write resumed>) = 4 [pid 305] <... ioctl resumed>) = 0 [pid 488] close(3 [pid 485] <... openat resumed>) = 3 [pid 305] close(3 [pid 488] <... close resumed>) = 0 [pid 485] ioctl(3, BLKSECDISCARD, [0, 0] [pid 305] <... close resumed>) = 0 [pid 488] memfd_create("syzkaller", 0 [pid 485] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 488] <... memfd_create resumed>) = 3 [pid 487] ioctl(4, LOOP_SET_FD, 3 [pid 485] exit_group(0 [pid 488] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 487] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 485] <... exit_group resumed>) = ? [pid 481] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 490 [pid 488] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 487] close(4 [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] <... close resumed>) = 0 [pid 485] +++ exited with 0 +++ [pid 481] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 487] close(3 [pid 481] close(4 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=485, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 487] <... close resumed>) = 0 [pid 481] <... close resumed>) = 0 [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 487] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 481] close(3 [pid 307] <... restart_syscall resumed>) = 0 [pid 488] <... write resumed>) = 262144 [pid 487] <... openat resumed>) = 3 [pid 488] munmap(0x7f7bfe3d8000, 262144 [pid 487] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 488] <... munmap resumed>) = 0 [pid 487] exit_group(0 [pid 307] <... openat resumed>) = 3 [pid 488] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 487] <... exit_group resumed>) = ? [pid 481] <... close resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 488] <... openat resumed>) = 4 [pid 487] +++ exited with 0 +++ [pid 307] <... ioctl resumed>) = 0 [pid 488] ioctl(4, LOOP_SET_FD, 3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=487, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] close(3 [pid 488] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] <... close resumed>) = 0 [pid 488] ioctl(4, LOOP_CLR_FD [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 488] <... ioctl resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 491 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 492 [pid 488] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 488] close(4) = 0 [pid 488] close(3) = 0 [pid 488] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 488] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 488] exit_group(0) = ? [pid 488] +++ exited with 0 +++ ./strace-static-x86_64: Process 490 attached [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=488, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 481] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 490] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 481] <... openat resumed>) = 3 [pid 490] <... prctl resumed>) = 0 [pid 481] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 481] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 490] setpgid(0, 0) = 0 [pid 308] <... openat resumed>) = 3 [pid 490] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 481] exit_group(0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 481] <... exit_group resumed>) = ? [pid 308] <... ioctl resumed>) = 0 [pid 490] <... openat resumed>) = 3 [pid 490] write(3, "1000", 4) = 4 [pid 490] close(3) = 0 [pid 481] +++ exited with 0 +++ [pid 308] close(3 [pid 490] memfd_create("syzkaller", 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=481, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] <... close resumed>) = 0 [pid 490] <... memfd_create resumed>) = 3 [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 490] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 492 attached [pid 310] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 491 attached ./strace-static-x86_64: Process 489 attached [pid 492] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 493 [pid 492] <... prctl resumed>) = 0 [pid 491] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 492] setpgid(0, 0 [pid 491] <... prctl resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 492] <... setpgid resumed>) = 0 [pid 491] setpgid(0, 0 [pid 490] 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] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 310] <... openat resumed>) = 3 [pid 492] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 491] <... setpgid resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 492] <... openat resumed>) = 3 [pid 491] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 489] <... prctl resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 492] write(3, "1000", 4 [pid 491] <... openat resumed>) = 3 [pid 489] setpgid(0, 0 [pid 310] close(3 [pid 492] <... write resumed>) = 4 [pid 491] write(3, "1000", 4 [pid 490] <... write resumed>) = 262144 [pid 489] <... setpgid resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 492] close(3 [pid 491] <... write resumed>) = 4 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 492] <... close resumed>) = 0 [pid 491] close(3 [pid 489] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 492] memfd_create("syzkaller", 0 [pid 491] <... close resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 494 [pid 492] <... memfd_create resumed>) = 3 [pid 491] memfd_create("syzkaller", 0 [pid 490] munmap(0x7f7bfe3d8000, 262144 [pid 492] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 491] <... memfd_create resumed>) = 3 [pid 489] <... openat resumed>) = 3 ./strace-static-x86_64: Process 493 attached [pid 492] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 491] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 490] <... munmap resumed>) = 0 [pid 493] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 492] 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 491] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 490] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 489] write(3, "1000", 4./strace-static-x86_64: Process 494 attached [pid 493] <... prctl resumed>) = 0 [pid 492] <... write resumed>) = 262144 [pid 491] 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 490] <... openat resumed>) = 4 [pid 489] <... write resumed>) = 4 [pid 494] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 493] setpgid(0, 0 [pid 492] munmap(0x7f7bfe3d8000, 262144 [pid 491] <... write resumed>) = 262144 [pid 490] ioctl(4, LOOP_SET_FD, 3 [pid 489] close(3 [pid 493] <... setpgid resumed>) = 0 [pid 492] <... munmap resumed>) = 0 [pid 491] munmap(0x7f7bfe3d8000, 262144 [pid 490] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 494] <... prctl resumed>) = 0 [pid 493] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 492] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 491] <... munmap resumed>) = 0 [pid 490] ioctl(4, LOOP_CLR_FD [pid 489] <... close resumed>) = 0 [pid 493] <... openat resumed>) = 3 [pid 492] <... openat resumed>) = 4 [pid 491] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 490] <... ioctl resumed>) = 0 [pid 494] setpgid(0, 0 [pid 493] write(3, "1000", 4 [pid 492] ioctl(4, LOOP_SET_FD, 3 [pid 491] <... openat resumed>) = 4 [pid 489] memfd_create("syzkaller", 0 [pid 493] <... write resumed>) = 4 [pid 492] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 491] ioctl(4, LOOP_SET_FD, 3 [pid 493] close(3 [pid 492] ioctl(4, LOOP_CLR_FD [pid 491] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 493] <... close resumed>) = 0 [pid 492] <... ioctl resumed>) = 0 [pid 491] ioctl(4, LOOP_CLR_FD [pid 489] <... memfd_create resumed>) = 3 [pid 493] memfd_create("syzkaller", 0 [pid 491] <... ioctl resumed>) = 0 [pid 489] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 493] <... memfd_create resumed>) = 3 [pid 489] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 493] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 490] ioctl(4, LOOP_SET_FD, 3 [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 490] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [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 494] <... setpgid resumed>) = 0 [pid 493] <... write resumed>) = 262144 [pid 492] ioctl(4, LOOP_SET_FD, 3 [pid 491] ioctl(4, LOOP_SET_FD, 3 [pid 490] close(4 [pid 493] munmap(0x7f7bfe3d8000, 262144 [pid 492] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 491] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 490] <... close resumed>) = 0 [pid 493] <... munmap resumed>) = 0 [pid 492] close(4 [pid 491] close(4 [pid 490] close(3 [pid 494] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 493] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 492] <... close resumed>) = 0 [pid 491] <... close resumed>) = 0 [pid 490] <... close resumed>) = 0 [pid 489] <... write resumed>) = 262144 [pid 493] <... openat resumed>) = 4 [pid 492] close(3 [pid 491] close(3 [pid 490] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 489] munmap(0x7f7bfe3d8000, 262144 [pid 494] <... openat resumed>) = 3 [pid 493] ioctl(4, LOOP_SET_FD, 3 [pid 492] <... close resumed>) = 0 [pid 491] <... close resumed>) = 0 [pid 490] <... openat resumed>) = 3 [pid 493] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 492] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 491] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 490] ioctl(3, BLKSECDISCARD, [0, 0] [pid 493] ioctl(4, LOOP_CLR_FD [pid 492] <... openat resumed>) = 3 [pid 491] <... openat resumed>) = 3 [pid 490] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 493] <... ioctl resumed>) = 0 [pid 492] ioctl(3, BLKSECDISCARD, [0, 0] [pid 491] ioctl(3, BLKSECDISCARD, [0, 0] [pid 490] exit_group(0 [pid 492] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 491] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 490] <... exit_group resumed>) = ? [pid 494] write(3, "1000", 4 [pid 492] exit_group(0 [pid 491] exit_group(0 [pid 490] +++ exited with 0 +++ [pid 489] <... munmap resumed>) = 0 [pid 492] <... exit_group resumed>) = ? [pid 491] <... exit_group resumed>) = ? [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=490, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 494] <... write resumed>) = 4 [pid 492] +++ exited with 0 +++ [pid 491] +++ exited with 0 +++ [pid 489] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 493] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... restart_syscall resumed>) = 0 [pid 493] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=492, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=491, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 493] close(4 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 494] close(3 [pid 493] <... close resumed>) = 0 [pid 489] <... openat resumed>) = 4 [pid 309] <... openat resumed>) = 3 [pid 307] <... openat resumed>) = 3 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 493] close(3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 307] ioctl(3, LOOP_CLR_FD [pid 305] <... openat resumed>) = 3 [pid 494] <... close resumed>) = 0 [pid 493] <... close resumed>) = 0 [pid 489] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... ioctl resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 493] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] close(3 [pid 307] close(3 [pid 305] <... ioctl resumed>) = 0 [pid 493] <... openat resumed>) = 3 [pid 309] <... close resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 305] close(3 [pid 493] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... close resumed>) = 0 [pid 494] memfd_create("syzkaller", 0 [pid 493] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 489] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 494] <... memfd_create resumed>) = 3 [pid 493] exit_group(0 [pid 489] ioctl(4, LOOP_CLR_FD [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 495 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 496 [pid 493] <... exit_group resumed>) = ? [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 497 [pid 494] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 493] +++ exited with 0 +++ [pid 489] <... ioctl resumed>) = 0 [pid 494] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=493, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 497 attached [pid 497] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 497] setpgid(0, 0) = 0 [pid 497] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 497] write(3, "1000", 4) = 4 [pid 497] close(3) = 0 [pid 497] memfd_create("syzkaller", 0) = 3 [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 497] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 494] <... write resumed>) = 262144 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 489] ioctl(4, LOOP_SET_FD, 3 [pid 494] munmap(0x7f7bfe3d8000, 262144 [pid 489] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] <... openat resumed>) = 3 [pid 489] close(4 [pid 308] ioctl(3, LOOP_CLR_FD [pid 494] <... munmap resumed>) = 0 [pid 489] <... close resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 494] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 489] close(3 [pid 308] close(3./strace-static-x86_64: Process 495 attached [pid 495] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 495] setpgid(0, 0) = 0 [pid 495] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 495] write(3, "1000", 4) = 4 [pid 489] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 489] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 494] <... openat resumed>) = 4 [pid 495] close(3 [pid 489] <... openat resumed>) = 3 [pid 489] ioctl(3, BLKSECDISCARD, [0, 0] [pid 494] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 498 [pid 495] <... close resumed>) = 0 [pid 489] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 494] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 495] memfd_create("syzkaller", 0 [pid 489] exit_group(0 [pid 494] ioctl(4, LOOP_CLR_FD [pid 495] <... memfd_create resumed>) = 3 [pid 494] <... ioctl resumed>) = 0 [pid 489] <... exit_group resumed>) = ? [pid 489] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=489, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 495] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 494] ioctl(4, LOOP_SET_FD, 3 [pid 306] <... openat resumed>) = 3 [pid 494] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] ioctl(3, LOOP_CLR_FD [pid 494] close(4 [pid 306] <... ioctl resumed>) = 0 [pid 306] close(3 [pid 494] <... close resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 494] close(3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 497] 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 495] 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 494] <... close resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 499 [pid 494] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 494] ioctl(3, BLKSECDISCARD, [0, 0] [pid 497] <... write resumed>) = 262144 [pid 494] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 497] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 494] exit_group(0 [pid 497] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 497] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 498 attached [pid 494] <... exit_group resumed>) = ? [pid 497] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 498] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 497] ioctl(4, LOOP_CLR_FD [pid 498] <... prctl resumed>) = 0 [pid 497] <... ioctl resumed>) = 0 [pid 498] setpgid(0, 0) = 0 [pid 495] <... write resumed>) = 262144 [pid 494] +++ exited with 0 +++ [pid 498] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 495] munmap(0x7f7bfe3d8000, 262144 [pid 498] <... openat resumed>) = 3 [pid 495] <... munmap resumed>) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=494, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 498] write(3, "1000", 4 [pid 495] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 310] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 499 attached [pid 498] <... write resumed>) = 4 [pid 495] <... openat resumed>) = 4 [pid 310] <... restart_syscall resumed>) = 0 [pid 499] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 498] close(3 [pid 497] ioctl(4, LOOP_SET_FD, 3 [pid 495] ioctl(4, LOOP_SET_FD, 3 [pid 499] <... prctl resumed>) = 0 [pid 498] <... close resumed>) = 0 [pid 497] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 495] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 499] setpgid(0, 0 [pid 498] memfd_create("syzkaller", 0 [pid 497] close(4 [pid 495] ioctl(4, LOOP_CLR_FD [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 499] <... setpgid resumed>) = 0 [pid 498] <... memfd_create resumed>) = 3 [pid 497] <... close resumed>) = 0 [pid 495] <... ioctl resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 499] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 498] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 497] close(3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 499] <... openat resumed>) = 3 [pid 498] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 497] <... close resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 496 attached [pid 499] write(3, "1000", 4 [pid 498] 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 497] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] close(3 [pid 499] <... write resumed>) = 4 [pid 497] <... openat resumed>) = 3 [pid 495] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... close resumed>) = 0 [pid 499] close(3 [pid 497] ioctl(3, BLKSECDISCARD, [0, 0] [pid 495] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 499] <... close resumed>) = 0 [pid 498] <... write resumed>) = 262144 [pid 497] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 495] close(4 [pid 499] memfd_create("syzkaller", 0 [pid 498] munmap(0x7f7bfe3d8000, 262144 [pid 497] exit_group(0 [pid 495] <... close resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 500 [pid 499] <... memfd_create resumed>) = 3 [pid 498] <... munmap resumed>) = 0 [pid 497] <... exit_group resumed>) = ? [pid 495] close(3 [pid 499] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 498] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 497] +++ exited with 0 +++ [pid 495] <... close resumed>) = 0 [pid 499] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 498] <... openat resumed>) = 4 [pid 495] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=497, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 499] 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 498] ioctl(4, LOOP_SET_FD, 3 [pid 496] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 495] <... openat resumed>) = 3 [pid 499] <... write resumed>) = 262144 [pid 498] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 496] <... prctl resumed>) = 0 [pid 495] ioctl(3, BLKSECDISCARD, [0, 0] [pid 499] munmap(0x7f7bfe3d8000, 262144 [pid 498] ioctl(4, LOOP_CLR_FD [pid 495] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 499] <... munmap resumed>) = 0 [pid 498] <... ioctl resumed>) = 0 [pid 496] setpgid(0, 0 [pid 495] exit_group(0 [pid 305] <... openat resumed>) = 3 [pid 499] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 495] <... exit_group resumed>) = ? [pid 305] ioctl(3, LOOP_CLR_FD [pid 499] <... openat resumed>) = 4 [pid 496] <... setpgid resumed>) = 0 [pid 495] +++ exited with 0 +++ [pid 305] <... ioctl resumed>) = 0 [pid 499] ioctl(4, LOOP_SET_FD, 3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=495, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] close(3 [pid 499] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... close resumed>) = 0 [pid 499] ioctl(4, LOOP_CLR_FD [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 499] <... ioctl resumed>) = 0 [pid 496] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 498] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... openat resumed>) = 3 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 501 [pid 498] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 496] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 498] close(4 [pid 309] <... ioctl resumed>) = 0 [pid 498] <... close resumed>) = 0 [pid 309] close(3 [pid 498] close(3 [pid 496] write(3, "1000", 4 [pid 309] <... close resumed>) = 0 [pid 498] <... close resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 500 attached [pid 499] ioctl(4, LOOP_SET_FD, 3 [pid 498] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 496] <... write resumed>) = 4 [pid 499] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 498] <... openat resumed>) = 3 [pid 496] close(3 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 502 [pid 499] close(4 [pid 498] ioctl(3, BLKSECDISCARD, [0, 0] [pid 496] <... close resumed>) = 0 [pid 499] <... close resumed>) = 0 [pid 498] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 499] close(3 [pid 498] exit_group(0 [pid 496] memfd_create("syzkaller", 0 [pid 500] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 499] <... close resumed>) = 0 [pid 498] <... exit_group resumed>) = ? [pid 500] <... prctl resumed>) = 0 [pid 499] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 498] +++ exited with 0 +++ [pid 496] <... memfd_create resumed>) = 3 [pid 499] <... openat resumed>) = 3 [pid 499] ioctl(3, BLKSECDISCARD, [0, 0] [pid 496] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=498, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 499] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 496] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 499] exit_group(0) = ? [pid 308] <... openat resumed>) = 3 [pid 499] +++ exited with 0 +++ [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=499, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] close(3 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 308] <... close resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 496] 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 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 501 attached [pid 501] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 501] setpgid(0, 0) = 0 [pid 501] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 503 [pid 501] <... openat resumed>) = 3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 501] write(3, "1000", 4 [pid 306] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3 [pid 501] <... write resumed>) = 4 [pid 501] close(3) = 0 [pid 501] memfd_create("syzkaller", 0 [pid 306] <... close resumed>) = 0 [pid 501] <... memfd_create resumed>) = 3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 501] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 504 [pid 496] <... write resumed>) = 262144 ./strace-static-x86_64: Process 504 attached ./strace-static-x86_64: Process 503 attached ./strace-static-x86_64: Process 502 attached [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 [pid 500] setpgid(0, 0 [pid 504] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 503] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 502] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 501] <... write resumed>) = 262144 [pid 500] <... setpgid resumed>) = 0 [pid 496] munmap(0x7f7bfe3d8000, 262144 [pid 504] <... prctl resumed>) = 0 [pid 503] <... prctl resumed>) = 0 [pid 502] <... prctl resumed>) = 0 [pid 504] setpgid(0, 0 [pid 503] setpgid(0, 0 [pid 502] setpgid(0, 0 [pid 500] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 504] <... setpgid resumed>) = 0 [pid 503] <... setpgid resumed>) = 0 [pid 502] <... setpgid resumed>) = 0 [pid 496] <... munmap resumed>) = 0 [pid 500] <... openat resumed>) = 3 [pid 496] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 504] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 503] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 502] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 501] munmap(0x7f7bfe3d8000, 262144 [pid 500] write(3, "1000", 4 [pid 496] <... openat resumed>) = 4 [pid 504] <... openat resumed>) = 3 [pid 503] <... openat resumed>) = 3 [pid 502] <... openat resumed>) = 3 [pid 501] <... munmap resumed>) = 0 [pid 500] <... write resumed>) = 4 [pid 496] ioctl(4, LOOP_SET_FD, 3 [pid 500] close(3 [pid 496] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 500] <... close resumed>) = 0 [pid 496] ioctl(4, LOOP_CLR_FD [pid 504] write(3, "1000", 4 [pid 503] write(3, "1000", 4 [pid 502] write(3, "1000", 4 [pid 501] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 500] memfd_create("syzkaller", 0 [pid 496] <... ioctl resumed>) = 0 [pid 504] <... write resumed>) = 4 [pid 503] <... write resumed>) = 4 [pid 502] <... write resumed>) = 4 [pid 501] <... openat resumed>) = 4 [pid 504] close(3 [pid 503] close(3 [pid 502] close(3 [pid 501] ioctl(4, LOOP_SET_FD, 3 [pid 504] <... close resumed>) = 0 [pid 503] <... close resumed>) = 0 [pid 502] <... close resumed>) = 0 [pid 501] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 504] memfd_create("syzkaller", 0 [pid 503] memfd_create("syzkaller", 0 [pid 502] memfd_create("syzkaller", 0 [pid 501] ioctl(4, LOOP_CLR_FD [pid 500] <... memfd_create resumed>) = 3 [pid 504] <... memfd_create resumed>) = 3 [pid 503] <... memfd_create resumed>) = 3 [pid 502] <... memfd_create resumed>) = 3 [pid 500] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 504] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 503] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 502] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 501] <... ioctl resumed>) = 0 [pid 500] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 504] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 503] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 502] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 504] 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 503] 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 502] 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] 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 504] <... write resumed>) = 262144 [pid 503] <... write resumed>) = 262144 [pid 502] <... write resumed>) = 262144 [pid 504] munmap(0x7f7bfe3d8000, 262144 [pid 503] munmap(0x7f7bfe3d8000, 262144 [pid 502] munmap(0x7f7bfe3d8000, 262144 [pid 501] ioctl(4, LOOP_SET_FD, 3 [pid 496] ioctl(4, LOOP_SET_FD, 3 [pid 504] <... munmap resumed>) = 0 [pid 503] <... munmap resumed>) = 0 [pid 502] <... munmap resumed>) = 0 [pid 501] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 504] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 503] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 502] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 501] close(4 [pid 496] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 504] <... openat resumed>) = 4 [pid 503] <... openat resumed>) = 4 [pid 502] <... openat resumed>) = 4 [pid 501] <... close resumed>) = 0 [pid 500] <... write resumed>) = 262144 [pid 496] close(4 [pid 504] ioctl(4, LOOP_SET_FD, 3 [pid 503] ioctl(4, LOOP_SET_FD, 3 [pid 502] ioctl(4, LOOP_SET_FD, 3 [pid 501] close(3 [pid 500] munmap(0x7f7bfe3d8000, 262144 [pid 504] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 503] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 502] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 501] <... close resumed>) = 0 [pid 496] <... close resumed>) = 0 [pid 504] ioctl(4, LOOP_CLR_FD [pid 503] ioctl(4, LOOP_CLR_FD [pid 502] ioctl(4, LOOP_CLR_FD [pid 501] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 500] <... munmap resumed>) = 0 [pid 496] close(3 [pid 504] <... ioctl resumed>) = 0 [pid 503] <... ioctl resumed>) = 0 [pid 502] <... ioctl resumed>) = 0 [pid 501] <... openat resumed>) = 3 [pid 501] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 501] exit_group(0) = ? [pid 501] +++ exited with 0 +++ [pid 500] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 496] <... close resumed>) = 0 [pid 500] <... openat resumed>) = 4 [pid 496] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=501, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 504] ioctl(4, LOOP_SET_FD, 3 [pid 503] ioctl(4, LOOP_SET_FD, 3 [pid 502] ioctl(4, LOOP_SET_FD, 3 [pid 500] ioctl(4, LOOP_SET_FD, 3 [pid 496] <... openat resumed>) = 3 [pid 504] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 503] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 502] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 496] ioctl(3, BLKSECDISCARD, [0, 0] [pid 500] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 504] close(4 [pid 503] close(4 [pid 502] close(4 [pid 500] ioctl(4, LOOP_CLR_FD [pid 496] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 504] <... close resumed>) = 0 [pid 503] <... close resumed>) = 0 [pid 502] <... close resumed>) = 0 [pid 500] <... ioctl resumed>) = 0 [pid 496] exit_group(0 [pid 305] <... openat resumed>) = 3 [pid 504] close(3 [pid 503] close(3 [pid 502] close(3 [pid 496] <... exit_group resumed>) = ? [pid 305] ioctl(3, LOOP_CLR_FD [pid 504] <... close resumed>) = 0 [pid 503] <... close resumed>) = 0 [pid 502] <... close resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 504] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 503] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 502] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] close(3 [pid 504] <... openat resumed>) = 3 [pid 503] <... openat resumed>) = 3 [pid 502] <... openat resumed>) = 3 [pid 305] <... close resumed>) = 0 [pid 504] ioctl(3, BLKSECDISCARD, [0, 0] [pid 503] ioctl(3, BLKSECDISCARD, [0, 0] [pid 502] ioctl(3, BLKSECDISCARD, [0, 0] [pid 496] +++ exited with 0 +++ [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 504] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 503] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 502] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 504] exit_group(0 [pid 503] exit_group(0 [pid 502] exit_group(0 [pid 500] ioctl(4, LOOP_SET_FD, 3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=496, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 505 [pid 504] <... exit_group resumed>) = ? [pid 503] <... exit_group resumed>) = ? [pid 502] <... exit_group resumed>) = ? [pid 500] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 504] +++ exited with 0 +++ [pid 503] +++ exited with 0 +++ [pid 502] +++ exited with 0 +++ [pid 500] close(4 [pid 307] <... restart_syscall resumed>) = 0 [pid 500] <... close resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=503, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=504, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 500] close(3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=502, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 309] <... openat resumed>) = 3 [pid 307] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 307] ioctl(3, LOOP_CLR_FD [pid 309] <... ioctl resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 309] close(3 [pid 307] close(3 [pid 309] <... close resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 500] <... close resumed>) = 0 [pid 500] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 506 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 507 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 500] <... openat resumed>) = 3 [pid 308] <... openat resumed>) = 3 [pid 500] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] ioctl(3, LOOP_CLR_FD [pid 306] <... openat resumed>) = 3 [pid 500] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] <... ioctl resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 500] exit_group(0 [pid 308] close(3 [pid 306] <... ioctl resumed>) = 0 [pid 500] <... exit_group resumed>) = ? [pid 308] <... close resumed>) = 0 [pid 306] close(3./strace-static-x86_64: Process 505 attached [pid 505] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 505] setpgid(0, 0) = 0 [pid 505] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 500] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=500, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] <... close resumed>) = 0 ./strace-static-x86_64: Process 507 attached ./strace-static-x86_64: Process 506 attached [pid 505] write(3, "1000", 4 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 508 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 509 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 509 attached ./strace-static-x86_64: Process 508 attached , child_tidptr=0x5555561ed5d0) = 510 [pid 508] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 505] <... write resumed>) = 4 [pid 505] close(3) = 0 [pid 505] memfd_create("syzkaller", 0 [pid 509] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 508] <... prctl resumed>) = 0 [pid 505] <... memfd_create resumed>) = 3 [pid 509] <... prctl resumed>) = 0 [pid 508] setpgid(0, 0 [pid 507] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 505] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 509] setpgid(0, 0 [pid 508] <... setpgid resumed>) = 0 [pid 507] <... prctl resumed>) = 0 [pid 507] setpgid(0, 0) = 0 [pid 507] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 509] <... setpgid resumed>) = 0 [pid 508] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 507] <... openat resumed>) = 3 [pid 507] write(3, "1000", 4) = 4 [pid 507] close(3) = 0 [pid 509] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 508] <... openat resumed>) = 3 [pid 507] memfd_create("syzkaller", 0) = 3 [pid 507] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 ./strace-static-x86_64: Process 510 attached [pid 509] <... openat resumed>) = 3 [pid 508] write(3, "1000", 4 [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 [pid 510] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 509] write(3, "1000", 4 [pid 508] <... write resumed>) = 4 [pid 510] <... prctl resumed>) = 0 [pid 509] <... write resumed>) = 4 [pid 508] close(3 [pid 507] 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 510] setpgid(0, 0 [pid 509] close(3 [pid 508] <... close resumed>) = 0 [pid 510] <... setpgid resumed>) = 0 [pid 509] <... close resumed>) = 0 [pid 508] memfd_create("syzkaller", 0 [pid 509] memfd_create("syzkaller", 0 [pid 508] <... memfd_create resumed>) = 3 [pid 505] <... write resumed>) = 262144 [pid 510] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 509] <... memfd_create resumed>) = 3 [pid 508] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 505] munmap(0x7f7bfe3d8000, 262144 [pid 509] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 508] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 505] <... munmap resumed>) = 0 [pid 507] <... write resumed>) = 262144 [pid 506] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 505] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 507] munmap(0x7f7bfe3d8000, 262144 [pid 506] <... prctl resumed>) = 0 [pid 505] <... openat resumed>) = 4 [pid 507] <... munmap resumed>) = 0 [pid 506] setpgid(0, 0 [pid 505] ioctl(4, LOOP_SET_FD, 3 [pid 509] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 507] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 506] <... setpgid resumed>) = 0 [pid 505] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 507] <... openat resumed>) = 4 [pid 506] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 505] ioctl(4, LOOP_CLR_FD [pid 507] ioctl(4, LOOP_SET_FD, 3 [pid 506] <... openat resumed>) = 3 [pid 505] <... ioctl resumed>) = 0 [pid 507] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 506] write(3, "1000", 4 [pid 508] 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 507] ioctl(4, LOOP_CLR_FD [pid 506] <... write resumed>) = 4 [pid 507] <... ioctl resumed>) = 0 [pid 506] close(3) = 0 [pid 506] memfd_create("syzkaller", 0) = 3 [pid 506] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 509] 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 506] 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 507] ioctl(4, LOOP_SET_FD, 3 [pid 505] ioctl(4, LOOP_SET_FD, 3 [pid 507] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 505] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 507] close(4 [pid 505] close(4 [pid 510] <... openat resumed>) = 3 [pid 507] <... close resumed>) = 0 [pid 505] <... close resumed>) = 0 [pid 507] close(3 [pid 505] close(3 [pid 510] write(3, "1000", 4 [pid 509] <... write resumed>) = 262144 [pid 508] <... write resumed>) = 262144 [pid 507] <... close resumed>) = 0 [pid 505] <... close resumed>) = 0 [pid 507] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 505] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 507] <... openat resumed>) = 3 [pid 505] <... openat resumed>) = 3 [pid 507] ioctl(3, BLKSECDISCARD, [0, 0] [pid 506] <... write resumed>) = 262144 [pid 505] ioctl(3, BLKSECDISCARD, [0, 0] [pid 507] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 506] munmap(0x7f7bfe3d8000, 262144 [pid 505] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 510] <... write resumed>) = 4 [pid 510] close(3 [pid 508] munmap(0x7f7bfe3d8000, 262144 [pid 507] exit_group(0 [pid 506] <... munmap resumed>) = 0 [pid 509] munmap(0x7f7bfe3d8000, 262144 [pid 505] exit_group(0 [pid 507] <... exit_group resumed>) = ? [pid 506] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 505] <... exit_group resumed>) = ? [pid 510] <... close resumed>) = 0 [pid 509] <... munmap resumed>) = 0 [pid 508] <... munmap resumed>) = 0 [pid 507] +++ exited with 0 +++ [pid 506] <... openat resumed>) = 4 [pid 505] +++ exited with 0 +++ [pid 506] ioctl(4, LOOP_SET_FD, 3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=507, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=505, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 506] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 506] ioctl(4, LOOP_CLR_FD) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 307] <... openat resumed>) = 3 [pid 305] <... openat resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 305] ioctl(3, LOOP_CLR_FD [pid 307] <... ioctl resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 307] close(3 [pid 305] close(3 [pid 307] <... close resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 510] memfd_create("syzkaller", 0 [pid 509] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 508] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 510] <... memfd_create resumed>) = 3 [pid 508] <... openat resumed>) = 4 [pid 506] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 511 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 512 [pid 510] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 509] <... openat resumed>) = 4 [pid 508] ioctl(4, LOOP_SET_FD, 3 [pid 506] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 510] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 506] close(4 [pid 508] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 509] ioctl(4, LOOP_SET_FD, 3 [pid 506] <... close resumed>) = 0 [pid 506] close(3) = 0 [pid 506] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 509] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 508] ioctl(4, LOOP_CLR_FD [pid 506] <... openat resumed>) = 3 [pid 510] 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 509] ioctl(4, LOOP_CLR_FD [pid 508] <... ioctl resumed>) = 0 [pid 506] ioctl(3, BLKSECDISCARD, [0, 0] [pid 509] <... ioctl resumed>) = 0 [pid 506] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 506] exit_group(0) = ? [pid 506] +++ exited with 0 +++ [pid 510] <... write resumed>) = 262144 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=506, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 510] munmap(0x7f7bfe3d8000, 262144 [pid 509] ioctl(4, LOOP_SET_FD, 3 [pid 508] ioctl(4, LOOP_SET_FD, 3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 509] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 508] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] <... ioctl resumed>) = 0 [pid 509] close(4 [pid 508] close(4 [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 510] <... munmap resumed>) = 0 [pid 509] <... close resumed>) = 0 [pid 508] <... close resumed>) = 0 [pid 510] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 509] close(3 [pid 508] close(3 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 513 ./strace-static-x86_64: Process 511 attached [pid 511] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 511] setpgid(0, 0) = 0 [pid 511] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 511] write(3, "1000", 4) = 4 [pid 508] <... close resumed>) = 0 [pid 511] close(3) = 0 [pid 511] memfd_create("syzkaller", 0) = 3 [pid 509] <... close resumed>) = 0 [pid 508] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 510] <... openat resumed>) = 4 [pid 509] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 511] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 508] <... openat resumed>) = 3 [pid 510] ioctl(4, LOOP_SET_FD, 3 [pid 509] <... openat resumed>) = 3 [pid 508] ioctl(3, BLKSECDISCARD, [0, 0] [pid 510] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 509] ioctl(3, BLKSECDISCARD, [0, 0] [pid 508] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 510] ioctl(4, LOOP_CLR_FD [pid 509] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 508] exit_group(0./strace-static-x86_64: Process 513 attached [pid 513] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 513] setpgid(0, 0) = 0 [pid 513] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [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 [pid 513] write(3, "1000", 4) = 4 [pid 513] close(3) = 0 [pid 513] memfd_create("syzkaller", 0) = 3 [pid 513] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 508] <... exit_group resumed>) = ? [pid 509] exit_group(0 [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 [pid 510] <... ioctl resumed>) = 0 [pid 509] <... exit_group resumed>) = ? [pid 508] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=508, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 511] <... write resumed>) = 262144 [pid 511] munmap(0x7f7bfe3d8000, 262144 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 511] <... munmap resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 511] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 308] ioctl(3, LOOP_CLR_FD [pid 511] <... openat resumed>) = 4 [pid 509] +++ exited with 0 +++ [pid 308] <... ioctl resumed>) = 0 [pid 511] ioctl(4, LOOP_SET_FD, 3 [pid 308] close(3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=509, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 511] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] <... close resumed>) = 0 [pid 513] <... write resumed>) = 262144 [pid 511] ioctl(4, LOOP_CLR_FD [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 511] <... ioctl resumed>) = 0 [pid 513] munmap(0x7f7bfe3d8000, 262144 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 510] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 514 [pid 306] <... openat resumed>) = 3 [pid 510] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] ioctl(3, LOOP_CLR_FD [pid 513] <... munmap resumed>) = 0 [pid 510] close(4 [pid 306] <... ioctl resumed>) = 0 [pid 306] close(3 [pid 510] <... close resumed>) = 0 [pid 513] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 306] <... close resumed>) = 0 [pid 513] <... openat resumed>) = 4 [pid 510] close(3 [pid 513] ioctl(4, LOOP_SET_FD, 3 [pid 511] ioctl(4, LOOP_SET_FD, 3 [pid 513] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 511] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 513] ioctl(4, LOOP_CLR_FD [pid 511] close(4 [pid 513] <... ioctl resumed>) = 0 [pid 511] <... close resumed>) = 0 [pid 511] close(3) = 0 [pid 510] <... close resumed>) = 0 [pid 511] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 510] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 515 [pid 511] <... openat resumed>) = 3 [pid 511] ioctl(3, BLKSECDISCARD, [0, 0] [pid 510] <... openat resumed>) = 3 [pid 511] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 511] exit_group(0 [pid 510] ioctl(3, BLKSECDISCARD, [0, 0] [pid 511] <... exit_group resumed>) = ? [pid 510] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 511] +++ exited with 0 +++ [pid 513] ioctl(4, LOOP_SET_FD, 3 [pid 510] exit_group(0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=511, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 513] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 510] <... exit_group resumed>) = ? [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 513] close(4 [pid 307] <... restart_syscall resumed>) = 0 [pid 513] <... close resumed>) = 0 [pid 513] close(3./strace-static-x86_64: Process 512 attached ) = 0 [pid 510] +++ exited with 0 +++ [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR./strace-static-x86_64: Process 514 attached [pid 513] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=510, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] <... openat resumed>) = 3 ./strace-static-x86_64: Process 515 attached [pid 514] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 513] <... openat resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 515] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 514] <... prctl resumed>) = 0 [pid 513] ioctl(3, BLKSECDISCARD, [0, 0] [pid 512] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 307] <... ioctl resumed>) = 0 [pid 515] <... prctl resumed>) = 0 [pid 514] setpgid(0, 0 [pid 513] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 512] <... prctl resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 307] close(3 [pid 515] setpgid(0, 0 [pid 514] <... setpgid resumed>) = 0 [pid 513] exit_group(0 [pid 512] setpgid(0, 0 [pid 310] <... openat resumed>) = 3 [pid 307] <... close resumed>) = 0 [pid 515] <... setpgid resumed>) = 0 [pid 514] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 513] <... exit_group resumed>) = ? [pid 310] ioctl(3, LOOP_CLR_FD [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 512] <... setpgid resumed>) = 0 [pid 515] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 514] <... openat resumed>) = 3 [pid 513] +++ exited with 0 +++ [pid 310] <... ioctl resumed>) = 0 [pid 515] <... openat resumed>) = 3 [pid 514] write(3, "1000", 4 [pid 512] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 310] close(3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=513, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 516 [pid 515] write(3, "1000", 4 [pid 514] <... write resumed>) = 4 [pid 310] <... close resumed>) = 0 [pid 515] <... write resumed>) = 4 [pid 514] close(3 [pid 512] <... openat resumed>) = 3 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 515] close(3 [pid 514] <... close resumed>) = 0 [pid 512] write(3, "1000", 4 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 515] <... close resumed>) = 0 [pid 514] memfd_create("syzkaller", 0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 517 [pid 309] <... openat resumed>) = 3 [pid 515] memfd_create("syzkaller", 0 [pid 514] <... memfd_create resumed>) = 3 [pid 512] <... write resumed>) = 4 [pid 309] ioctl(3, LOOP_CLR_FD [pid 515] <... memfd_create resumed>) = 3 [pid 514] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 512] close(3 [pid 309] <... ioctl resumed>) = 0 [pid 515] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 514] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 309] close(3 [pid 515] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 514] 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 512] <... close resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 515] 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 514] <... write resumed>) = 262144 [pid 512] memfd_create("syzkaller", 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 517 attached [pid 515] <... write resumed>) = 262144 [pid 514] munmap(0x7f7bfe3d8000, 262144 [pid 512] <... memfd_create resumed>) = 3 [pid 517] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 515] munmap(0x7f7bfe3d8000, 262144 [pid 514] <... munmap resumed>) = 0 [pid 512] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 518 [pid 515] <... munmap resumed>) = 0 [pid 514] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 512] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 515] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 514] <... openat resumed>) = 4 [pid 515] <... openat resumed>) = 4 [pid 514] ioctl(4, LOOP_SET_FD, 3 [pid 515] ioctl(4, LOOP_SET_FD, 3 [pid 514] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 515] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 514] ioctl(4, LOOP_CLR_FD [pid 515] ioctl(4, LOOP_CLR_FD [pid 514] <... ioctl resumed>) = 0 [pid 515] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 516 attached [pid 516] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 516] setpgid(0, 0) = 0 [pid 512] 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 516] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 515] ioctl(4, LOOP_SET_FD, 3 [pid 514] ioctl(4, LOOP_SET_FD, 3 [pid 515] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 514] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 515] close(4 [pid 514] close(4 [pid 515] <... close resumed>) = 0 [pid 514] <... close resumed>) = 0 [pid 515] close(3 [pid 514] close(3 [pid 517] <... prctl resumed>) = 0 [pid 515] <... close resumed>) = 0 [pid 514] <... close resumed>) = 0 [pid 512] <... write resumed>) = 262144 [pid 515] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 514] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 515] <... openat resumed>) = 3 [pid 514] <... openat resumed>) = 3 [pid 517] setpgid(0, 0 [pid 515] ioctl(3, BLKSECDISCARD, [0, 0] [pid 514] ioctl(3, BLKSECDISCARD, [0, 0] [pid 512] munmap(0x7f7bfe3d8000, 262144 [pid 516] <... openat resumed>) = 3 [pid 515] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 514] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 516] write(3, "1000", 4 [pid 515] exit_group(0 [pid 514] exit_group(0 [pid 516] <... write resumed>) = 4 [pid 515] <... exit_group resumed>) = ? [pid 514] <... exit_group resumed>) = ? [pid 517] <... setpgid resumed>) = 0 [pid 516] close(3 [pid 515] +++ exited with 0 +++ [pid 514] +++ exited with 0 +++ [pid 512] <... munmap resumed>) = 0 [pid 516] <... close resumed>) = 0 [pid 516] memfd_create("syzkaller", 0) = 3 [pid 512] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=514, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=515, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 517] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 516] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 512] <... openat resumed>) = 4 [pid 516] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 517] <... openat resumed>) = 3 [pid 512] ioctl(4, LOOP_SET_FD, 3 [pid 516] 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 517] write(3, "1000", 4 [pid 512] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 517] <... write resumed>) = 4 [pid 512] ioctl(4, LOOP_CLR_FD [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 516] <... write resumed>) = 262144 [pid 516] munmap(0x7f7bfe3d8000, 262144 [pid 517] close(3 [pid 516] <... munmap resumed>) = 0 [pid 512] <... ioctl resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 306] <... openat resumed>) = 3 [pid 516] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 517] <... close resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 306] ioctl(3, LOOP_CLR_FD [pid 516] <... openat resumed>) = 4 [pid 516] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 516] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 518 attached [pid 518] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 308] <... ioctl resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 517] memfd_create("syzkaller", 0 [pid 306] close(3 [pid 308] close(3 [pid 518] <... prctl resumed>) = 0 [pid 518] setpgid(0, 0) = 0 [pid 518] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 517] <... memfd_create resumed>) = 3 [pid 308] <... close resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 518] write(3, "1000", 4) = 4 [pid 516] ioctl(4, LOOP_SET_FD, 3 [pid 518] close(3 [pid 516] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 518] <... close resumed>) = 0 [pid 516] close(4 [pid 518] memfd_create("syzkaller", 0 [pid 516] <... close resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 518] <... memfd_create resumed>) = 3 [pid 517] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 516] close(3 [pid 512] ioctl(4, LOOP_SET_FD, 3 [pid 518] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 517] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 516] <... close resumed>) = 0 [pid 512] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 518] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 516] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 512] close(4 [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 516] <... openat resumed>) = 3 [pid 512] <... close resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 519 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 520 [pid 516] ioctl(3, BLKSECDISCARD, [0, 0] [pid 512] close(3 [pid 518] 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 516] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 517] <... write resumed>) = 262144 [pid 516] exit_group(0) = ? [pid 516] +++ exited with 0 +++ [pid 512] <... close resumed>) = 0 [pid 517] munmap(0x7f7bfe3d8000, 262144 [pid 512] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=516, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 512] <... openat resumed>) = 3 [pid 512] ioctl(3, BLKSECDISCARD, [0, 0] [pid 517] <... munmap resumed>) = 0 [pid 512] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 518] <... write resumed>) = 262144 [pid 517] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 512] exit_group(0 [pid 307] <... openat resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 518] munmap(0x7f7bfe3d8000, 262144 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 518] <... munmap resumed>) = 0 [pid 517] <... openat resumed>) = 4 [pid 512] <... exit_group resumed>) = ? [pid 518] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 521 [pid 518] <... openat resumed>) = 4 [pid 518] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 518] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 519 attached [pid 512] +++ exited with 0 +++ [pid 519] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 517] ioctl(4, LOOP_SET_FD, 3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=512, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 519] <... prctl resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 519] setpgid(0, 0 [pid 517] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 519] <... setpgid resumed>) = 0 [pid 519] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 517] ioctl(4, LOOP_CLR_FD [pid 519] <... openat resumed>) = 3 [pid 517] <... ioctl resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 519] write(3, "1000", 4) = 4 [pid 519] close(3 [pid 518] ioctl(4, LOOP_SET_FD, 3 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 519] <... close resumed>) = 0 [pid 518] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... openat resumed>) = 3 [pid 519] memfd_create("syzkaller", 0 [pid 518] close(4 [pid 305] ioctl(3, LOOP_CLR_FD [pid 519] <... memfd_create resumed>) = 3 [pid 518] <... close resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 519] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 518] close(3 [pid 305] close(3 [pid 519] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 518] <... close resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 519] 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 518] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 517] ioctl(4, LOOP_SET_FD, 3 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 518] <... openat resumed>) = 3 [pid 517] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 520 attached [pid 518] ioctl(3, BLKSECDISCARD, [0, 0] [pid 517] close(4 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 522 [pid 518] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 517] <... close resumed>) = 0 [pid 518] exit_group(0 [pid 517] close(3 [pid 519] <... write resumed>) = 262144 [pid 518] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 522 attached ./strace-static-x86_64: Process 521 attached [pid 520] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 519] munmap(0x7f7bfe3d8000, 262144 [pid 518] +++ exited with 0 +++ [pid 517] <... close resumed>) = 0 [pid 517] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=518, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 517] <... openat resumed>) = 3 [pid 519] <... munmap resumed>) = 0 [pid 517] ioctl(3, BLKSECDISCARD, [0, 0] [pid 519] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 517] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 517] exit_group(0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 519] <... openat resumed>) = 4 [pid 517] <... exit_group resumed>) = ? [pid 309] <... ioctl resumed>) = 0 [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 517] +++ exited with 0 +++ [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 523 [pid 519] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=517, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 519] ioctl(4, LOOP_CLR_FD [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 519] <... ioctl resumed>) = 0 [pid 522] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 310] <... openat resumed>) = 3 [pid 522] <... prctl resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 522] setpgid(0, 0 [pid 310] <... ioctl resumed>) = 0 [pid 522] <... setpgid resumed>) = 0 [pid 522] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 310] close(3 [pid 522] <... openat resumed>) = 3 [pid 310] <... close resumed>) = 0 [pid 522] write(3, "1000", 4 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 522] <... write resumed>) = 4 [pid 522] close(3) = 0 [pid 522] memfd_create("syzkaller", 0 [pid 519] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 524 [pid 522] <... memfd_create resumed>) = 3 [pid 519] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 519] close(4 [pid 522] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 519] <... close resumed>) = 0 [pid 520] <... prctl resumed>) = 0 [pid 519] close(3 [pid 522] 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 521] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 520] setpgid(0, 0 [pid 519] <... close resumed>) = 0 [pid 521] <... prctl resumed>) = 0 [pid 520] <... setpgid resumed>) = 0 [pid 519] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 519] ioctl(3, BLKSECDISCARD, [0, 0] [pid 520] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 521] setpgid(0, 0 [pid 519] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 521] <... setpgid resumed>) = 0 [pid 520] <... openat resumed>) = 3 [pid 519] exit_group(0 [pid 520] write(3, "1000", 4 [pid 519] <... exit_group resumed>) = ? [pid 520] <... write resumed>) = 4 ./strace-static-x86_64: Process 524 attached [pid 524] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 524] setpgid(0, 0) = 0 [pid 524] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 520] close(3 [pid 519] +++ exited with 0 +++ [pid 521] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 522] <... write resumed>) = 262144 [pid 521] <... openat resumed>) = 3 [pid 520] <... close resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=519, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 524] write(3, "1000", 4 [pid 308] <... restart_syscall resumed>) = 0 [pid 520] memfd_create("syzkaller", 0 [pid 524] <... write resumed>) = 4 [pid 521] write(3, "1000", 4 [pid 524] close(3 [pid 522] munmap(0x7f7bfe3d8000, 262144 [pid 524] <... close resumed>) = 0 [pid 522] <... munmap resumed>) = 0 [pid 521] <... write resumed>) = 4 [pid 520] <... memfd_create resumed>) = 3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 524] memfd_create("syzkaller", 0 [pid 522] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 521] close(3 [pid 520] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 308] <... openat resumed>) = 3 [pid 524] <... memfd_create resumed>) = 3 [pid 522] <... openat resumed>) = 4 [pid 521] <... close resumed>) = 0 [pid 520] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 308] ioctl(3, LOOP_CLR_FD [pid 524] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 522] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 523 attached [pid 524] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 308] close(3 [pid 524] 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 523] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 522] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 521] memfd_create("syzkaller", 0 [pid 520] 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 308] <... close resumed>) = 0 [pid 524] <... write resumed>) = 262144 [pid 523] <... prctl resumed>) = 0 [pid 522] ioctl(4, LOOP_CLR_FD [pid 521] <... memfd_create resumed>) = 3 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 523] setpgid(0, 0 [pid 522] <... ioctl resumed>) = 0 [pid 521] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 520] <... write resumed>) = 262144 [pid 523] <... setpgid resumed>) = 0 [pid 523] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 525 [pid 521] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 523] <... openat resumed>) = 3 [pid 523] write(3, "1000", 4) = 4 [pid 523] close(3) = 0 [pid 523] memfd_create("syzkaller", 0) = 3 [pid 523] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 523] 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 521] 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 524] munmap(0x7f7bfe3d8000, 262144 [pid 522] ioctl(4, LOOP_SET_FD, 3 [pid 524] <... munmap resumed>) = 0 [pid 522] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 524] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 523] <... write resumed>) = 262144 [pid 522] close(4 [pid 520] munmap(0x7f7bfe3d8000, 262144 [pid 524] <... openat resumed>) = 4 [pid 522] <... close resumed>) = 0 [pid 524] ioctl(4, LOOP_SET_FD, 3 [pid 522] close(3 [pid 524] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 522] <... close resumed>) = 0 [pid 520] <... munmap resumed>) = 0 [pid 524] ioctl(4, LOOP_CLR_FD [pid 522] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 524] <... ioctl resumed>) = 0 [pid 522] <... openat resumed>) = 3 [pid 522] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 522] exit_group(0) = ? [pid 522] +++ exited with 0 +++ [pid 524] ioctl(4, LOOP_SET_FD, 3 [pid 523] munmap(0x7f7bfe3d8000, 262144 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=522, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 524] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 523] <... munmap resumed>) = 0 [pid 524] close(4 [pid 523] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 524] <... close resumed>) = 0 [pid 523] <... openat resumed>) = 4 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 524] close(3 [pid 523] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... openat resumed>) = 3 ./strace-static-x86_64: Process 525 attached [pid 524] <... close resumed>) = 0 [pid 523] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] ioctl(3, LOOP_CLR_FD [pid 525] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 524] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 523] ioctl(4, LOOP_CLR_FD [pid 305] <... ioctl resumed>) = 0 [pid 525] <... prctl resumed>) = 0 [pid 524] <... openat resumed>) = 3 [pid 523] <... ioctl resumed>) = 0 [pid 305] close(3 [pid 525] setpgid(0, 0 [pid 524] ioctl(3, BLKSECDISCARD, [0, 0] [pid 305] <... close resumed>) = 0 [pid 525] <... setpgid resumed>) = 0 [pid 524] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 525] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 524] exit_group(0 [pid 525] <... openat resumed>) = 3 [pid 524] <... exit_group resumed>) = ? [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 526 [pid 525] write(3, "1000", 4 [pid 524] +++ exited with 0 +++ [pid 521] <... write resumed>) = 262144 [pid 520] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 525] <... write resumed>) = 4 [pid 523] ioctl(4, LOOP_SET_FD, 3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=524, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 525] close(3 [pid 523] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 525] <... close resumed>) = 0 [pid 523] close(4 [pid 520] <... openat resumed>) = 4 [pid 525] memfd_create("syzkaller", 0 [pid 523] <... close resumed>) = 0 [pid 521] munmap(0x7f7bfe3d8000, 262144 [pid 520] ioctl(4, LOOP_SET_FD, 3 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 520] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 525] <... memfd_create resumed>) = 3 [pid 523] close(3 [pid 520] ioctl(4, LOOP_CLR_FD [pid 310] <... openat resumed>) = 3 [pid 521] <... munmap resumed>) = 0 [pid 520] <... ioctl resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 525] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 523] <... close resumed>) = 0 [pid 521] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 310] <... ioctl resumed>) = 0 [pid 525] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 523] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 521] <... openat resumed>) = 4 [pid 310] close(3 [pid 525] 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 523] <... openat resumed>) = 3 [pid 521] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... close resumed>) = 0 [pid 525] <... write resumed>) = 262144 [pid 523] ioctl(3, BLKSECDISCARD, [0, 0] [pid 521] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 520] ioctl(4, LOOP_SET_FD, 3 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 525] munmap(0x7f7bfe3d8000, 262144 [pid 523] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 525] <... munmap resumed>) = 0 [pid 523] exit_group(0) = ? [pid 520] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 521] ioctl(4, LOOP_CLR_FD [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 527 [pid 525] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 523] +++ exited with 0 +++ [pid 521] <... ioctl resumed>) = 0 [pid 520] close(4./strace-static-x86_64: Process 526 attached [pid 525] <... openat resumed>) = 4 [pid 520] <... close resumed>) = 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=523, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 526] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 525] ioctl(4, LOOP_SET_FD, 3 [pid 520] close(3 [pid 526] <... prctl resumed>) = 0 [pid 525] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 526] setpgid(0, 0 [pid 525] ioctl(4, LOOP_CLR_FD [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 526] <... setpgid resumed>) = 0 [pid 525] <... ioctl resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 526] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 309] ioctl(3, LOOP_CLR_FD [pid 526] <... openat resumed>) = 3 [pid 309] <... ioctl resumed>) = 0 [pid 526] write(3, "1000", 4 [pid 309] close(3 [pid 526] <... write resumed>) = 4 [pid 520] <... close resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 526] close(3 [pid 521] ioctl(4, LOOP_SET_FD, 3 [pid 520] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 526] <... close resumed>) = 0 [pid 521] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 520] <... openat resumed>) = 3 [pid 526] memfd_create("syzkaller", 0 [pid 525] ioctl(4, LOOP_SET_FD, 3 [pid 521] close(4 [pid 520] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 528 ./strace-static-x86_64: Process 527 attached [pid 526] <... memfd_create resumed>) = 3 [pid 525] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 521] <... close resumed>) = 0 [pid 520] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 527] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 526] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 525] close(4 [pid 521] close(3 [pid 527] <... prctl resumed>) = 0 [pid 526] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 525] <... close resumed>) = 0 [pid 520] exit_group(0 [pid 527] setpgid(0, 0 [pid 526] 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 525] close(3 [pid 521] <... close resumed>) = 0 [pid 527] <... setpgid resumed>) = 0 [pid 526] <... write resumed>) = 262144 [pid 525] <... close resumed>) = 0 [pid 521] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 520] <... exit_group resumed>) = ? [pid 527] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 525] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 521] <... openat resumed>) = 3 [pid 527] <... openat resumed>) = 3 [pid 526] munmap(0x7f7bfe3d8000, 262144 [pid 525] <... openat resumed>) = 3 [pid 527] write(3, "1000", 4 [pid 526] <... munmap resumed>) = 0 [pid 525] ioctl(3, BLKSECDISCARD, [0, 0] [pid 521] ioctl(3, BLKSECDISCARD, [0, 0] [pid 520] +++ exited with 0 +++ [pid 527] <... write resumed>) = 4 [pid 526] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 525] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 521] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=520, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 527] close(3 [pid 526] <... openat resumed>) = 4 [pid 525] exit_group(0 [pid 527] <... close resumed>) = 0 [pid 526] ioctl(4, LOOP_SET_FD, 3 [pid 525] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 528 attached [pid 527] memfd_create("syzkaller", 0 [pid 526] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 525] +++ exited with 0 +++ [pid 521] exit_group(0 [pid 528] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 527] <... memfd_create resumed>) = 3 [pid 526] ioctl(4, LOOP_CLR_FD [pid 521] <... exit_group resumed>) = ? [pid 528] <... prctl resumed>) = 0 [pid 527] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 526] <... ioctl resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=525, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 528] setpgid(0, 0 [pid 527] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 528] <... setpgid resumed>) = 0 [pid 527] 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 521] +++ exited with 0 +++ [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 528] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 527] <... write resumed>) = 262144 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=521, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 528] <... openat resumed>) = 3 [pid 527] munmap(0x7f7bfe3d8000, 262144 [pid 526] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... restart_syscall resumed>) = 0 [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 528] write(3, "1000", 4 [pid 527] <... munmap resumed>) = 0 [pid 526] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] <... restart_syscall resumed>) = 0 [pid 528] <... write resumed>) = 4 [pid 527] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 526] close(4 [pid 528] close(3 [pid 527] <... openat resumed>) = 4 [pid 526] <... close resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 528] <... close resumed>) = 0 [pid 527] ioctl(4, LOOP_SET_FD, 3 [pid 526] close(3 [pid 308] <... openat resumed>) = 3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 528] memfd_create("syzkaller", 0 [pid 527] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 526] <... close resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 306] <... openat resumed>) = 3 [pid 526] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] ioctl(3, LOOP_CLR_FD [pid 307] ioctl(3, LOOP_CLR_FD [pid 306] ioctl(3, LOOP_CLR_FD [pid 526] <... openat resumed>) = 3 [pid 308] <... ioctl resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 526] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] close(3 [pid 307] close(3 [pid 526] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] <... close resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 306] close(3 [pid 526] exit_group(0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 526] <... exit_group resumed>) = ? [pid 306] <... close resumed>) = 0 [pid 528] <... memfd_create resumed>) = 3 [pid 527] ioctl(4, LOOP_CLR_FD [pid 526] +++ exited with 0 +++ [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 529 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 530 [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=526, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 531 [pid 305] <... ioctl resumed>) = 0 [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 528] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 527] <... ioctl resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 532 [pid 528] <... mmap resumed>) = 0x7f7bfe3d8000 ./strace-static-x86_64: Process 529 attached [pid 529] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 529] setpgid(0, 0) = 0 [pid 529] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 529] write(3, "1000", 4) = 4 [pid 529] close(3) = 0 [pid 529] memfd_create("syzkaller", 0) = 3 ./strace-static-x86_64: Process 531 attached [pid 529] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 531] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 529] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 527] ioctl(4, LOOP_SET_FD, 3 [pid 531] <... prctl resumed>) = 0 [pid 531] setpgid(0, 0 [pid 527] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 531] <... setpgid resumed>) = 0 [pid 527] close(4 [pid 531] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 527] <... close resumed>) = 0 ./strace-static-x86_64: Process 530 attached [pid 531] <... openat resumed>) = 3 [pid 528] 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 527] close(3 [pid 531] write(3, "1000", 4 [pid 530] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 531] <... write resumed>) = 4 [pid 529] 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 530] <... prctl resumed>) = 0 [pid 527] <... close resumed>) = 0 [pid 531] close(3 [pid 530] setpgid(0, 0 [pid 531] <... close resumed>) = 0 [pid 530] <... setpgid resumed>) = 0 [pid 527] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 531] memfd_create("syzkaller", 0 [pid 530] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 527] <... openat resumed>) = 3 [pid 531] <... memfd_create resumed>) = 3 [pid 530] <... openat resumed>) = 3 [pid 528] <... write resumed>) = 262144 [pid 527] ioctl(3, BLKSECDISCARD, [0, 0] [pid 531] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 530] write(3, "1000", 4 [pid 531] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 530] <... write resumed>) = 4 [pid 528] munmap(0x7f7bfe3d8000, 262144 [pid 527] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 531] 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 530] close(3 [pid 528] <... munmap resumed>) = 0 [pid 527] exit_group(0./strace-static-x86_64: Process 532 attached [pid 529] <... write resumed>) = 262144 [pid 530] <... close resumed>) = 0 [pid 528] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 527] <... exit_group resumed>) = ? [pid 529] munmap(0x7f7bfe3d8000, 262144 [pid 530] memfd_create("syzkaller", 0 [pid 529] <... munmap resumed>) = 0 [pid 530] <... memfd_create resumed>) = 3 [pid 529] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 530] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 529] <... openat resumed>) = 4 [pid 530] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 527] +++ exited with 0 +++ [pid 531] <... write resumed>) = 262144 [pid 528] <... openat resumed>) = 4 [pid 532] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 529] ioctl(4, LOOP_SET_FD, 3 [pid 530] 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 528] ioctl(4, LOOP_SET_FD, 3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=527, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 532] <... prctl resumed>) = 0 [pid 531] munmap(0x7f7bfe3d8000, 262144 [pid 529] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 530] <... write resumed>) = 262144 [pid 528] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 532] setpgid(0, 0 [pid 531] <... munmap resumed>) = 0 [pid 529] ioctl(4, LOOP_CLR_FD [pid 530] munmap(0x7f7bfe3d8000, 262144 [pid 528] ioctl(4, LOOP_CLR_FD [pid 310] <... restart_syscall resumed>) = 0 [pid 531] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 529] <... ioctl resumed>) = 0 [pid 530] <... munmap resumed>) = 0 [pid 532] <... setpgid resumed>) = 0 [pid 531] <... openat resumed>) = 4 [pid 530] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 528] <... ioctl resumed>) = 0 [pid 531] ioctl(4, LOOP_SET_FD, 3 [pid 530] <... openat resumed>) = 4 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 531] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 530] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... openat resumed>) = 3 [pid 531] ioctl(4, LOOP_CLR_FD [pid 530] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] ioctl(3, LOOP_CLR_FD [pid 531] <... ioctl resumed>) = 0 [pid 530] ioctl(4, LOOP_CLR_FD [pid 310] <... ioctl resumed>) = 0 [pid 530] <... ioctl resumed>) = 0 [pid 310] close(3) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 532] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 529] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 533 [pid 529] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 531] ioctl(4, LOOP_SET_FD, 3 [pid 529] close(4 [pid 531] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 529] <... close resumed>) = 0 [pid 530] ioctl(4, LOOP_SET_FD, 3 [pid 531] close(4 [pid 529] close(3 [pid 530] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 528] ioctl(4, LOOP_SET_FD, 3 [pid 532] <... openat resumed>) = 3 [pid 531] <... close resumed>) = 0 [pid 529] <... close resumed>) = 0 [pid 528] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 532] write(3, "1000", 4 [pid 531] close(3 [pid 529] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 530] close(4 [pid 528] close(4 [pid 532] <... write resumed>) = 4 [pid 531] <... close resumed>) = 0 [pid 529] <... openat resumed>) = 3 [pid 530] <... close resumed>) = 0 [pid 528] <... close resumed>) = 0 [pid 532] close(3 [pid 531] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 529] ioctl(3, BLKSECDISCARD, [0, 0] [pid 530] close(3 [pid 528] close(3 [pid 532] <... close resumed>) = 0 [pid 531] <... openat resumed>) = 3 [pid 529] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 530] <... close resumed>) = 0 [pid 531] ioctl(3, BLKSECDISCARD, [0, 0] [pid 529] exit_group(0 [pid 531] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 529] <... exit_group resumed>) = ? [pid 530] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 531] exit_group(0 [pid 529] +++ exited with 0 +++ [pid 530] <... openat resumed>) = 3 [pid 531] <... exit_group resumed>) = ? [pid 530] ioctl(3, BLKSECDISCARD, [0, 0] [pid 531] +++ exited with 0 +++ [pid 530] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 528] <... close resumed>) = 0 [pid 530] exit_group(0 [pid 528] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 530] <... exit_group resumed>) = ? [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=529, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=531, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 530] +++ exited with 0 +++ [pid 528] <... openat resumed>) = 3 [pid 308] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=530, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 528] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 532] memfd_create("syzkaller", 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 528] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 528] exit_group(0 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 532] <... memfd_create resumed>) = 3 [pid 528] <... exit_group resumed>) = ? [pid 308] <... openat resumed>) = 3 [pid 307] <... openat resumed>) = 3 [pid 306] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 532] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 528] +++ exited with 0 +++ [pid 308] <... ioctl resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 532] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=528, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] close(3 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 534 [pid 306] <... ioctl resumed>) = 0 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 308] <... close resumed>) = 0 [pid 306] close(3 [pid 309] <... restart_syscall resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] <... close resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] <... close resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 535 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 537 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 536 ./strace-static-x86_64: Process 535 attached [pid 535] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 535] setpgid(0, 0) = 0 [pid 535] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 532] 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 535] write(3, "1000", 4./strace-static-x86_64: Process 536 attached ) = 4 [pid 535] close(3) = 0 [pid 535] memfd_create("syzkaller", 0 [pid 536] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 535] <... memfd_create resumed>) = 3 [pid 536] setpgid(0, 0) = 0 [pid 536] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 535] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 536] <... openat resumed>) = 3 [pid 536] write(3, "1000", 4) = 4 [pid 536] close(3) = 0 [pid 536] memfd_create("syzkaller", 0./strace-static-x86_64: Process 537 attached ) = 3 [pid 532] <... write resumed>) = 262144 [pid 537] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 536] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 537] <... prctl resumed>) = 0 [pid 536] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 537] setpgid(0, 0 [pid 532] munmap(0x7f7bfe3d8000, 262144 [pid 537] <... setpgid resumed>) = 0 [pid 535] 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 537] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 536] 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 532] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 534 attached [pid 537] <... openat resumed>) = 3 [pid 532] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 537] write(3, "1000", 4 [pid 534] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 532] <... openat resumed>) = 4 [pid 537] <... write resumed>) = 4 [pid 534] <... prctl resumed>) = 0 [pid 532] ioctl(4, LOOP_SET_FD, 3 [pid 537] close(3 [pid 534] setpgid(0, 0 [pid 532] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 537] <... close resumed>) = 0 [pid 534] <... setpgid resumed>) = 0 [pid 532] ioctl(4, LOOP_CLR_FD [pid 537] memfd_create("syzkaller", 0 [pid 535] <... write resumed>) = 262144 [pid 534] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 532] <... ioctl resumed>) = 0 [pid 537] <... memfd_create resumed>) = 3 [pid 535] munmap(0x7f7bfe3d8000, 262144 [pid 534] <... openat resumed>) = 3 [pid 537] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 536] <... write resumed>) = 262144 [pid 535] <... munmap resumed>) = 0 [pid 534] write(3, "1000", 4 [pid 537] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 535] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 534] <... write resumed>) = 4 ./strace-static-x86_64: Process 533 attached [pid 537] 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 536] munmap(0x7f7bfe3d8000, 262144 [pid 535] <... openat resumed>) = 4 [pid 534] close(3 [pid 537] <... write resumed>) = 262144 [pid 536] <... munmap resumed>) = 0 [pid 535] ioctl(4, LOOP_SET_FD, 3 [pid 534] <... close resumed>) = 0 [pid 532] ioctl(4, LOOP_SET_FD, 3 [pid 536] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 535] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 534] memfd_create("syzkaller", 0 [pid 533] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 532] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 537] munmap(0x7f7bfe3d8000, 262144 [pid 536] <... openat resumed>) = 4 [pid 535] ioctl(4, LOOP_CLR_FD [pid 534] <... memfd_create resumed>) = 3 [pid 532] close(4 [pid 533] <... prctl resumed>) = 0 [pid 537] <... munmap resumed>) = 0 [pid 536] ioctl(4, LOOP_SET_FD, 3 [pid 535] <... ioctl resumed>) = 0 [pid 534] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 532] <... close resumed>) = 0 [pid 537] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 536] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 534] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 532] close(3 [pid 537] <... openat resumed>) = 4 [pid 536] ioctl(4, LOOP_CLR_FD [pid 534] 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 533] setpgid(0, 0 [pid 537] ioctl(4, LOOP_SET_FD, 3 [pid 536] <... ioctl resumed>) = 0 [pid 534] <... write resumed>) = 262144 [pid 533] <... setpgid resumed>) = 0 [pid 532] <... close resumed>) = 0 [pid 537] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 535] ioctl(4, LOOP_SET_FD, 3 [pid 537] ioctl(4, LOOP_CLR_FD [pid 535] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 537] <... ioctl resumed>) = 0 [pid 535] close(4 [pid 534] munmap(0x7f7bfe3d8000, 262144 [pid 535] <... close resumed>) = 0 [pid 535] close(3 [pid 534] <... munmap resumed>) = 0 [pid 535] <... close resumed>) = 0 [pid 533] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 532] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 537] ioctl(4, LOOP_SET_FD, 3 [pid 536] ioctl(4, LOOP_SET_FD, 3 [pid 535] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 534] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 537] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 536] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 535] <... openat resumed>) = 3 [pid 534] <... openat resumed>) = 4 [pid 537] close(4 [pid 536] close(4 [pid 535] ioctl(3, BLKSECDISCARD, [0, 0] [pid 534] ioctl(4, LOOP_SET_FD, 3 [pid 537] <... close resumed>) = 0 [pid 536] <... close resumed>) = 0 [pid 535] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 534] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 532] <... openat resumed>) = 3 [pid 537] close(3 [pid 536] close(3 [pid 535] exit_group(0 [pid 533] <... openat resumed>) = 3 [pid 532] ioctl(3, BLKSECDISCARD, [0, 0] [pid 537] <... close resumed>) = 0 [pid 536] <... close resumed>) = 0 [pid 535] <... exit_group resumed>) = ? [pid 534] ioctl(4, LOOP_CLR_FD [pid 537] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 536] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 535] +++ exited with 0 +++ [pid 534] <... ioctl resumed>) = 0 [pid 533] write(3, "1000", 4 [pid 532] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 537] <... openat resumed>) = 3 [pid 536] <... openat resumed>) = 3 [pid 533] <... write resumed>) = 4 [pid 537] ioctl(3, BLKSECDISCARD, [0, 0] [pid 536] ioctl(3, BLKSECDISCARD, [0, 0] [pid 533] close(3 [pid 537] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 536] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 533] <... close resumed>) = 0 [pid 537] exit_group(0 [pid 536] exit_group(0 [pid 533] memfd_create("syzkaller", 0 [pid 537] <... exit_group resumed>) = ? [pid 536] <... exit_group resumed>) = ? [pid 533] <... memfd_create resumed>) = 3 [pid 537] +++ exited with 0 +++ [pid 536] +++ exited with 0 +++ [pid 533] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 532] exit_group(0 [pid 534] ioctl(4, LOOP_SET_FD, 3 [pid 533] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=537, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=535, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 534] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 533] 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 532] <... exit_group resumed>) = ? [pid 534] close(4 [pid 533] <... write resumed>) = 262144 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=536, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 534] <... close resumed>) = 0 [pid 533] munmap(0x7f7bfe3d8000, 262144 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 534] close(3 [pid 533] <... munmap resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 534] <... close resumed>) = 0 [pid 533] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 532] +++ exited with 0 +++ [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] <... openat resumed>) = 3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 534] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 533] <... openat resumed>) = 4 [pid 309] <... ioctl resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=532, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 534] <... openat resumed>) = 3 [pid 533] ioctl(4, LOOP_SET_FD, 3 [pid 309] close(3 [pid 534] ioctl(3, BLKSECDISCARD, [0, 0] [pid 533] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] <... close resumed>) = 0 [pid 534] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 533] ioctl(4, LOOP_CLR_FD [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 534] exit_group(0 [pid 533] <... ioctl resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 306] <... openat resumed>) = 3 [pid 305] <... openat resumed>) = 3 [pid 534] <... exit_group resumed>) = ? [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 538 [pid 308] <... ioctl resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 305] ioctl(3, LOOP_CLR_FD [pid 534] +++ exited with 0 +++ [pid 305] <... ioctl resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=534, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] close(3 [pid 308] close(3 [pid 306] <... ioctl resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 306] close(3 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] <... close resumed>) = 0 [pid 533] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... openat resumed>) = 3 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 539 [pid 533] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] ioctl(3, LOOP_CLR_FD [pid 533] close(4 [pid 307] <... ioctl resumed>) = 0 [pid 533] <... close resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 540 [pid 307] close(3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 533] close(3 [pid 307] <... close resumed>) = 0 [pid 533] <... close resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 533] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 541 [pid 533] <... openat resumed>) = 3 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 542 [pid 533] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 533] exit_group(0) = ? [pid 533] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=533, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 543 ./strace-static-x86_64: Process 540 attached [pid 540] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 540] setpgid(0, 0) = 0 [pid 540] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 ./strace-static-x86_64: Process 538 attached [pid 540] write(3, "1000", 4) = 4 [pid 538] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 542 attached [pid 540] close(3 [pid 542] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 540] <... close resumed>) = 0 [pid 538] <... prctl resumed>) = 0 [pid 542] <... prctl resumed>) = 0 [pid 540] memfd_create("syzkaller", 0 [pid 538] setpgid(0, 0 [pid 542] setpgid(0, 0 [pid 540] <... memfd_create resumed>) = 3 [pid 538] <... setpgid resumed>) = 0 [pid 542] <... setpgid resumed>) = 0 [pid 540] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 538] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 542] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 540] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 538] <... openat resumed>) = 3 ./strace-static-x86_64: Process 541 attached ./strace-static-x86_64: Process 539 attached [pid 542] <... openat resumed>) = 3 [pid 538] write(3, "1000", 4 [pid 542] write(3, "1000", 4 [pid 538] <... write resumed>) = 4 [pid 542] <... write resumed>) = 4 [pid 538] close(3 [pid 542] close(3 [pid 538] <... close resumed>) = 0 [pid 542] <... close resumed>) = 0 [pid 540] 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 538] memfd_create("syzkaller", 0 [pid 541] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 542] memfd_create("syzkaller", 0 [pid 538] <... memfd_create resumed>) = 3 ./strace-static-x86_64: Process 543 attached [pid 542] <... memfd_create resumed>) = 3 [pid 541] <... prctl resumed>) = 0 [pid 539] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 538] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 543] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 542] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 541] setpgid(0, 0 [pid 540] <... write resumed>) = 262144 [pid 539] <... prctl resumed>) = 0 [pid 538] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 543] <... prctl resumed>) = 0 [pid 542] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 541] <... setpgid resumed>) = 0 [pid 539] setpgid(0, 0 [pid 538] 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 542] 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 538] <... write resumed>) = 262144 [pid 540] munmap(0x7f7bfe3d8000, 262144 [pid 542] <... write resumed>) = 262144 [pid 540] <... munmap resumed>) = 0 [pid 542] munmap(0x7f7bfe3d8000, 262144 [pid 540] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 542] <... munmap resumed>) = 0 [pid 540] <... openat resumed>) = 4 [pid 538] munmap(0x7f7bfe3d8000, 262144 [pid 541] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 540] ioctl(4, LOOP_SET_FD, 3 [pid 538] <... munmap resumed>) = 0 [pid 542] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 540] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 538] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 542] <... openat resumed>) = 4 [pid 540] ioctl(4, LOOP_CLR_FD [pid 538] <... openat resumed>) = 4 [pid 542] ioctl(4, LOOP_SET_FD, 3 [pid 541] <... openat resumed>) = 3 [pid 540] <... ioctl resumed>) = 0 [pid 538] ioctl(4, LOOP_SET_FD, 3 [pid 542] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 538] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 542] ioctl(4, LOOP_CLR_FD [pid 541] write(3, "1000", 4 [pid 538] ioctl(4, LOOP_CLR_FD [pid 542] <... ioctl resumed>) = 0 [pid 538] <... ioctl resumed>) = 0 [pid 541] <... write resumed>) = 4 [pid 543] setpgid(0, 0 [pid 541] close(3 [pid 539] <... setpgid resumed>) = 0 [pid 540] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 542] ioctl(4, LOOP_SET_FD, 3 [pid 540] close(4 [pid 538] ioctl(4, LOOP_SET_FD, 3 [pid 542] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 541] <... close resumed>) = 0 [pid 540] <... close resumed>) = 0 [pid 538] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 542] close(4 [pid 540] close(3 [pid 539] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 538] close(4 [pid 543] <... setpgid resumed>) = 0 [pid 542] <... close resumed>) = 0 [pid 541] memfd_create("syzkaller", 0 [pid 540] <... close resumed>) = 0 [pid 539] <... openat resumed>) = 3 [pid 538] <... close resumed>) = 0 [pid 542] close(3 [pid 540] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 538] close(3 [pid 543] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 542] <... close resumed>) = 0 [pid 541] <... memfd_create resumed>) = 3 [pid 540] <... openat resumed>) = 3 [pid 539] write(3, "1000", 4 [pid 538] <... close resumed>) = 0 [pid 542] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 541] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 540] ioctl(3, BLKSECDISCARD, [0, 0] [pid 538] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 543] <... openat resumed>) = 3 [pid 542] <... openat resumed>) = 3 [pid 541] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 540] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 539] <... write resumed>) = 4 [pid 538] <... openat resumed>) = 3 [pid 542] ioctl(3, BLKSECDISCARD, [0, 0] [pid 540] exit_group(0 [pid 542] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 540] <... exit_group resumed>) = ? [pid 538] ioctl(3, BLKSECDISCARD, [0, 0] [pid 543] write(3, "1000", 4 [pid 542] exit_group(0 [pid 540] +++ exited with 0 +++ [pid 539] close(3 [pid 538] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 543] <... write resumed>) = 4 [pid 542] <... exit_group resumed>) = ? [pid 541] 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 539] <... close resumed>) = 0 [pid 538] exit_group(0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=540, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 543] close(3 [pid 542] +++ exited with 0 +++ [pid 538] <... exit_group resumed>) = ? [pid 543] <... close resumed>) = 0 [pid 539] memfd_create("syzkaller", 0 [pid 538] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=542, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 543] memfd_create("syzkaller", 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=538, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 308] <... openat resumed>) = 3 [pid 539] <... memfd_create resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 543] <... memfd_create resumed>) = 3 [pid 541] <... write resumed>) = 262144 [pid 539] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 308] <... ioctl resumed>) = 0 [pid 543] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 541] munmap(0x7f7bfe3d8000, 262144 [pid 539] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 309] <... restart_syscall resumed>) = 0 [pid 308] close(3 [pid 543] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 541] <... munmap resumed>) = 0 [pid 539] 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 308] <... close resumed>) = 0 [pid 543] 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 541] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 539] <... write resumed>) = 262144 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 543] <... write resumed>) = 262144 [pid 541] <... openat resumed>) = 4 [pid 539] munmap(0x7f7bfe3d8000, 262144 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 543] munmap(0x7f7bfe3d8000, 262144 [pid 541] ioctl(4, LOOP_SET_FD, 3 [pid 539] <... munmap resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 544 [pid 307] <... openat resumed>) = 3 [pid 543] <... munmap resumed>) = 0 [pid 541] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 539] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 309] ioctl(3, LOOP_CLR_FD [pid 307] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 544 attached [pid 543] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 541] ioctl(4, LOOP_CLR_FD [pid 539] <... openat resumed>) = 4 [pid 309] <... ioctl resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 544] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 543] <... openat resumed>) = 4 [pid 541] <... ioctl resumed>) = 0 [pid 539] ioctl(4, LOOP_SET_FD, 3 [pid 309] close(3 [pid 307] close(3 [pid 544] <... prctl resumed>) = 0 [pid 543] ioctl(4, LOOP_SET_FD, 3 [pid 539] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] <... close resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 544] setpgid(0, 0 [pid 543] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 539] ioctl(4, LOOP_CLR_FD [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 544] <... setpgid resumed>) = 0 [pid 543] ioctl(4, LOOP_CLR_FD [pid 539] <... ioctl resumed>) = 0 [pid 543] <... ioctl resumed>) = 0 [pid 541] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 545 [pid 544] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 541] close(4 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 546 [pid 544] <... openat resumed>) = 3 [pid 541] <... close resumed>) = 0 [pid 544] write(3, "1000", 4 [pid 541] close(3./strace-static-x86_64: Process 546 attached [pid 544] <... write resumed>) = 4 [pid 543] ioctl(4, LOOP_SET_FD, 3 [pid 541] <... close resumed>) = 0 [pid 539] ioctl(4, LOOP_SET_FD, 3 [pid 546] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 544] close(3 [pid 543] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 541] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 539] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 546] <... prctl resumed>) = 0 [pid 544] <... close resumed>) = 0 [pid 543] close(4 [pid 541] <... openat resumed>) = 3 [pid 539] close(4 [pid 546] setpgid(0, 0 [pid 544] memfd_create("syzkaller", 0 [pid 543] <... close resumed>) = 0 [pid 541] ioctl(3, BLKSECDISCARD, [0, 0] [pid 539] <... close resumed>) = 0 [pid 546] <... setpgid resumed>) = 0 [pid 544] <... memfd_create resumed>) = 3 [pid 543] close(3 [pid 541] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 539] close(3./strace-static-x86_64: Process 545 attached [pid 546] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 544] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 543] <... close resumed>) = 0 [pid 541] exit_group(0 [pid 539] <... close resumed>) = 0 [pid 546] <... openat resumed>) = 3 [pid 544] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 543] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 541] <... exit_group resumed>) = ? [pid 539] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 546] write(3, "1000", 4 [pid 545] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 543] <... openat resumed>) = 3 [pid 541] +++ exited with 0 +++ [pid 539] <... openat resumed>) = 3 [pid 546] <... write resumed>) = 4 [pid 545] <... prctl resumed>) = 0 [pid 544] 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 543] ioctl(3, BLKSECDISCARD, [0, 0] [pid 539] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=541, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 546] close(3 [pid 545] setpgid(0, 0 [pid 543] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 539] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 546] <... close resumed>) = 0 [pid 545] <... setpgid resumed>) = 0 [pid 544] <... write resumed>) = 262144 [pid 543] exit_group(0 [pid 539] exit_group(0 [pid 546] memfd_create("syzkaller", 0 [pid 545] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 544] munmap(0x7f7bfe3d8000, 262144 [pid 543] <... exit_group resumed>) = ? [pid 539] <... exit_group resumed>) = ? [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 546] <... memfd_create resumed>) = 3 [pid 545] <... openat resumed>) = 3 [pid 544] <... munmap resumed>) = 0 [pid 543] +++ exited with 0 +++ [pid 539] +++ exited with 0 +++ [pid 306] <... openat resumed>) = 3 [pid 546] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 545] write(3, "1000", 4 [pid 544] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 306] ioctl(3, LOOP_CLR_FD [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=539, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 546] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 545] <... write resumed>) = 4 [pid 544] <... openat resumed>) = 4 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=543, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... ioctl resumed>) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 547 [pid 546] 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 545] close(3 [pid 544] ioctl(4, LOOP_SET_FD, 3 [pid 310] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 547 attached [pid 547] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 546] <... write resumed>) = 262144 [pid 544] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] <... restart_syscall resumed>) = 0 [pid 545] <... close resumed>) = 0 [pid 544] ioctl(4, LOOP_CLR_FD [pid 546] munmap(0x7f7bfe3d8000, 262144 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 545] memfd_create("syzkaller", 0 [pid 544] <... ioctl resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 545] <... memfd_create resumed>) = 3 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 305] ioctl(3, LOOP_CLR_FD [pid 546] <... munmap resumed>) = 0 [pid 545] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 310] <... openat resumed>) = 3 [pid 305] <... ioctl resumed>) = 0 [pid 546] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 545] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 310] ioctl(3, LOOP_CLR_FD [pid 305] close(3 [pid 546] <... openat resumed>) = 4 [pid 547] setpgid(0, 0) = 0 [pid 547] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 545] 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 546] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... ioctl resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 547] write(3, "1000", 4) = 4 [pid 545] <... write resumed>) = 262144 [pid 546] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 544] ioctl(4, LOOP_SET_FD, 3 [pid 310] close(3 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 546] ioctl(4, LOOP_CLR_FD [pid 545] munmap(0x7f7bfe3d8000, 262144 [pid 544] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] <... close resumed>) = 0 [pid 547] close(3) = 0 [pid 546] <... ioctl resumed>) = 0 [pid 544] close(4 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 544] <... close resumed>) = 0 [pid 547] memfd_create("syzkaller", 0 [pid 544] close(3 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 548 [pid 547] <... memfd_create resumed>) = 3 [pid 547] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 545] <... munmap resumed>) = 0 [pid 544] <... close resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 549 [pid 545] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 544] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 545] <... openat resumed>) = 4 [pid 544] <... openat resumed>) = 3 [pid 545] ioctl(4, LOOP_SET_FD, 3 [pid 544] ioctl(3, BLKSECDISCARD, [0, 0] [pid 546] ioctl(4, LOOP_SET_FD, 3 [pid 545] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 544] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 546] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 545] ioctl(4, LOOP_CLR_FD [pid 544] exit_group(0 [pid 546] close(4 [pid 545] <... ioctl resumed>) = 0 [pid 544] <... exit_group resumed>) = ? [pid 546] <... close resumed>) = 0 [pid 544] +++ exited with 0 +++ [pid 547] 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 546] close(3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=544, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 546] <... close resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 546] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] <... ioctl resumed>) = 0 [pid 546] <... openat resumed>) = 3 [pid 308] close(3 [pid 546] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] <... close resumed>) = 0 [pid 546] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 545] ioctl(4, LOOP_SET_FD, 3 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 546] exit_group(0 [pid 545] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 550 [pid 547] <... write resumed>) = 262144 [pid 546] <... exit_group resumed>) = ? [pid 545] close(4 [pid 547] munmap(0x7f7bfe3d8000, 262144./strace-static-x86_64: Process 549 attached [pid 546] +++ exited with 0 +++ [pid 545] <... close resumed>) = 0 ./strace-static-x86_64: Process 550 attached [pid 549] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 547] <... munmap resumed>) = 0 [pid 545] close(3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=546, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 549] <... prctl resumed>) = 0 [pid 547] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 548 attached [pid 549] setpgid(0, 0 [pid 547] <... openat resumed>) = 4 [pid 545] <... close resumed>) = 0 [pid 550] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 549] <... setpgid resumed>) = 0 [pid 548] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 547] ioctl(4, LOOP_SET_FD, 3 [pid 545] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 550] <... prctl resumed>) = 0 [pid 549] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 548] <... prctl resumed>) = 0 [pid 547] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 545] <... openat resumed>) = 3 [pid 550] setpgid(0, 0 [pid 549] <... openat resumed>) = 3 [pid 548] setpgid(0, 0 [pid 547] ioctl(4, LOOP_CLR_FD [pid 545] ioctl(3, BLKSECDISCARD, [0, 0] [pid 550] <... setpgid resumed>) = 0 [pid 549] write(3, "1000", 4 [pid 548] <... setpgid resumed>) = 0 [pid 547] <... ioctl resumed>) = 0 [pid 545] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 550] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 549] <... write resumed>) = 4 [pid 548] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 545] exit_group(0 [pid 550] <... openat resumed>) = 3 [pid 549] close(3 [pid 548] <... openat resumed>) = 3 [pid 545] <... exit_group resumed>) = ? [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 550] write(3, "1000", 4 [pid 549] <... close resumed>) = 0 [pid 548] write(3, "1000", 4 [pid 550] <... write resumed>) = 4 [pid 549] memfd_create("syzkaller", 0 [pid 548] <... write resumed>) = 4 [pid 545] +++ exited with 0 +++ [pid 307] <... openat resumed>) = 3 [pid 550] close(3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=545, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] ioctl(3, LOOP_CLR_FD [pid 550] <... close resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 307] close(3 [pid 550] memfd_create("syzkaller", 0 [pid 549] <... memfd_create resumed>) = 3 [pid 548] close(3 [pid 547] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... close resumed>) = 0 [pid 550] <... memfd_create resumed>) = 3 [pid 549] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 548] <... close resumed>) = 0 [pid 547] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 550] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 549] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 548] memfd_create("syzkaller", 0 [pid 547] close(4 [pid 550] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 549] 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 548] <... memfd_create resumed>) = 3 [pid 547] <... close resumed>) = 0 [pid 550] 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 549] <... write resumed>) = 262144 [pid 548] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 547] close(3 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 551 [pid 550] <... write resumed>) = 262144 [pid 549] munmap(0x7f7bfe3d8000, 262144 [pid 548] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 547] <... close resumed>) = 0 [pid 309] <... openat resumed>) = 3 ./strace-static-x86_64: Process 551 attached [pid 550] munmap(0x7f7bfe3d8000, 262144 [pid 549] <... munmap resumed>) = 0 [pid 548] 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 547] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] ioctl(3, LOOP_CLR_FD [pid 551] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 550] <... munmap resumed>) = 0 [pid 549] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 548] <... write resumed>) = 262144 [pid 547] <... openat resumed>) = 3 [pid 309] <... ioctl resumed>) = 0 [pid 551] <... prctl resumed>) = 0 [pid 550] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 549] <... openat resumed>) = 4 [pid 548] munmap(0x7f7bfe3d8000, 262144 [pid 547] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] close(3 [pid 551] setpgid(0, 0 [pid 550] <... openat resumed>) = 4 [pid 549] ioctl(4, LOOP_SET_FD, 3 [pid 548] <... munmap resumed>) = 0 [pid 547] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] <... close resumed>) = 0 [pid 551] <... setpgid resumed>) = 0 [pid 550] ioctl(4, LOOP_SET_FD, 3 [pid 549] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 548] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 547] exit_group(0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 551] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 550] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 549] ioctl(4, LOOP_CLR_FD [pid 548] <... openat resumed>) = 4 [pid 547] <... exit_group resumed>) = ? [pid 551] <... openat resumed>) = 3 [pid 550] ioctl(4, LOOP_CLR_FD [pid 549] <... ioctl resumed>) = 0 [pid 548] ioctl(4, LOOP_SET_FD, 3 [pid 547] +++ exited with 0 +++ [pid 551] write(3, "1000", 4 [pid 550] <... ioctl resumed>) = 0 [pid 548] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 552 [pid 551] <... write resumed>) = 4 [pid 548] ioctl(4, LOOP_CLR_FD [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=547, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 551] close(3 [pid 548] <... ioctl resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 551] <... close resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 551] memfd_create("syzkaller", 0 [pid 549] ioctl(4, LOOP_SET_FD, 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 551] <... memfd_create resumed>) = 3 [pid 549] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... ioctl resumed>) = 0 [pid 551] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 550] ioctl(4, LOOP_SET_FD, 3 [pid 549] close(4 [pid 306] close(3 [pid 551] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 550] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 549] <... close resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 549] close(3 [pid 548] ioctl(4, LOOP_SET_FD, 3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 551] 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 550] close(4 [pid 549] <... close resumed>) = 0 [pid 548] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 549] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 548] close(4 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 553 [pid 549] <... openat resumed>) = 3 [pid 548] <... close resumed>) = 0 [pid 549] ioctl(3, BLKSECDISCARD, [0, 0] [pid 548] close(3 [pid 551] <... write resumed>) = 262144 [pid 550] <... close resumed>) = 0 [pid 549] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 548] <... close resumed>) = 0 [pid 551] munmap(0x7f7bfe3d8000, 262144 [pid 550] close(3 [pid 549] exit_group(0 [pid 548] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 551] <... munmap resumed>) = 0 [pid 549] <... exit_group resumed>) = ? [pid 548] <... openat resumed>) = 3 [pid 551] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 550] <... close resumed>) = 0 [pid 549] +++ exited with 0 +++ [pid 548] ioctl(3, BLKSECDISCARD, [0, 0]./strace-static-x86_64: Process 553 attached [pid 551] <... openat resumed>) = 4 [pid 550] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 548] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=549, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 553] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 551] ioctl(4, LOOP_SET_FD, 3 [pid 550] <... openat resumed>) = 3 [pid 548] exit_group(0 [pid 553] <... prctl resumed>) = 0 [pid 551] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 550] ioctl(3, BLKSECDISCARD, [0, 0] [pid 548] <... exit_group resumed>) = ? [pid 553] setpgid(0, 0 [pid 551] ioctl(4, LOOP_CLR_FD [pid 550] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 548] +++ exited with 0 +++ [pid 551] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 552 attached [pid 550] exit_group(0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=548, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 550] <... exit_group resumed>) = ? [pid 552] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 552] setpgid(0, 0) = 0 [pid 550] +++ exited with 0 +++ [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 552] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=550, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 552] <... openat resumed>) = 3 [pid 551] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... openat resumed>) = 3 [pid 553] <... setpgid resumed>) = 0 [pid 552] write(3, "1000", 4 [pid 551] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] ioctl(3, LOOP_CLR_FD [pid 305] <... openat resumed>) = 3 [pid 551] close(4 [pid 310] <... ioctl resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 551] <... close resumed>) = 0 [pid 310] close(3 [pid 305] <... ioctl resumed>) = 0 [pid 551] close(3 [pid 310] <... close resumed>) = 0 [pid 305] close(3 [pid 552] <... write resumed>) = 4 [pid 552] close(3) = 0 [pid 553] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 552] memfd_create("syzkaller", 0 [pid 551] <... close resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... close resumed>) = 0 [pid 552] <... memfd_create resumed>) = 3 [pid 551] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 552] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 551] <... openat resumed>) = 3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 553] <... openat resumed>) = 3 [pid 552] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 551] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 554 [pid 308] <... openat resumed>) = 3 [pid 553] write(3, "1000", 4 [pid 552] 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 551] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] ioctl(3, LOOP_CLR_FD [pid 553] <... write resumed>) = 4 [pid 552] <... write resumed>) = 262144 [pid 551] exit_group(0 [pid 308] <... ioctl resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 555 [pid 553] close(3 [pid 551] <... exit_group resumed>) = ? [pid 308] close(3 [pid 553] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 553] memfd_create("syzkaller", 0 [pid 551] +++ exited with 0 +++ [pid 553] <... memfd_create resumed>) = 3 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 556 [pid 553] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 552] munmap(0x7f7bfe3d8000, 262144 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=551, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 553] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 552] <... munmap resumed>) = 0 [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 552] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] <... restart_syscall resumed>) = 0 [pid 552] <... openat resumed>) = 4 [pid 552] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 554 attached ) = -1 EBUSY (Device or resource busy) [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 554] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 553] 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 552] ioctl(4, LOOP_CLR_FD [pid 307] <... openat resumed>) = 3 [pid 554] <... prctl resumed>) = 0 [pid 552] <... ioctl resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 554] setpgid(0, 0 [pid 307] <... ioctl resumed>) = 0 [pid 554] <... setpgid resumed>) = 0 [pid 307] close(3 [pid 554] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 307] <... close resumed>) = 0 [pid 554] <... openat resumed>) = 3 [pid 553] <... write resumed>) = 262144 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 554] write(3, "1000", 4 [pid 553] munmap(0x7f7bfe3d8000, 262144 [pid 552] ioctl(4, LOOP_SET_FD, 3 [pid 554] <... write resumed>) = 4 [pid 552] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 554] close(3 [pid 552] close(4 [pid 553] <... munmap resumed>) = 0 [pid 554] <... close resumed>) = 0 [pid 552] <... close resumed>) = 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 557 [pid 553] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 554] memfd_create("syzkaller", 0 [pid 552] close(3./strace-static-x86_64: Process 555 attached [pid 554] <... memfd_create resumed>) = 3 [pid 553] <... openat resumed>) = 4 [pid 552] <... close resumed>) = 0 [pid 555] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 554] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 553] ioctl(4, LOOP_SET_FD, 3 [pid 552] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000./strace-static-x86_64: Process 556 attached [pid 555] <... prctl resumed>) = 0 [pid 554] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 553] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 552] <... openat resumed>) = 3 [pid 556] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 555] setpgid(0, 0 [pid 554] 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 553] ioctl(4, LOOP_CLR_FD [pid 552] ioctl(3, BLKSECDISCARD, [0, 0] [pid 556] <... prctl resumed>) = 0 [pid 555] <... setpgid resumed>) = 0 [pid 553] <... ioctl resumed>) = 0 [pid 552] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 556] setpgid(0, 0 [pid 555] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 554] <... write resumed>) = 262144 [pid 552] exit_group(0./strace-static-x86_64: Process 557 attached [pid 556] <... setpgid resumed>) = 0 [pid 555] <... openat resumed>) = 3 [pid 554] munmap(0x7f7bfe3d8000, 262144 [pid 552] <... exit_group resumed>) = ? [pid 557] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 556] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 555] write(3, "1000", 4 [pid 554] <... munmap resumed>) = 0 [pid 552] +++ exited with 0 +++ [pid 557] <... prctl resumed>) = 0 [pid 556] <... openat resumed>) = 3 [pid 555] <... write resumed>) = 4 [pid 554] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 553] ioctl(4, LOOP_SET_FD, 3 [pid 556] write(3, "1000", 4 [pid 555] close(3 [pid 553] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 556] <... write resumed>) = 4 [pid 555] <... close resumed>) = 0 [pid 553] close(4 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=552, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 556] close(3 [pid 557] setpgid(0, 0 [pid 556] <... close resumed>) = 0 [pid 555] memfd_create("syzkaller", 0 [pid 554] <... openat resumed>) = 4 [pid 553] <... close resumed>) = 0 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 557] <... setpgid resumed>) = 0 [pid 556] memfd_create("syzkaller", 0 [pid 555] <... memfd_create resumed>) = 3 [pid 554] ioctl(4, LOOP_SET_FD, 3 [pid 553] close(3 [pid 309] <... restart_syscall resumed>) = 0 [pid 557] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 556] <... memfd_create resumed>) = 3 [pid 555] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 554] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 557] <... openat resumed>) = 3 [pid 554] ioctl(4, LOOP_CLR_FD [pid 557] write(3, "1000", 4 [pid 556] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 555] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 554] <... ioctl resumed>) = 0 [pid 553] <... close resumed>) = 0 [pid 557] <... write resumed>) = 4 [pid 556] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 557] close(3) = 0 [pid 557] memfd_create("syzkaller", 0) = 3 [pid 557] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 555] 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 557] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 554] ioctl(4, LOOP_SET_FD, 3 [pid 557] 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 556] 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 554] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 553] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 557] <... write resumed>) = 262144 [pid 556] <... write resumed>) = 262144 [pid 555] <... write resumed>) = 262144 [pid 554] close(4 [pid 553] <... openat resumed>) = 3 [pid 309] <... openat resumed>) = 3 [pid 557] munmap(0x7f7bfe3d8000, 262144 [pid 556] munmap(0x7f7bfe3d8000, 262144 [pid 555] munmap(0x7f7bfe3d8000, 262144 [pid 554] <... close resumed>) = 0 [pid 553] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] ioctl(3, LOOP_CLR_FD [pid 557] <... munmap resumed>) = 0 [pid 556] <... munmap resumed>) = 0 [pid 555] <... munmap resumed>) = 0 [pid 554] close(3 [pid 553] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] <... ioctl resumed>) = 0 [pid 557] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 556] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 555] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 554] <... close resumed>) = 0 [pid 553] exit_group(0 [pid 309] close(3 [pid 557] <... openat resumed>) = 4 [pid 556] <... openat resumed>) = 4 [pid 555] <... openat resumed>) = 4 [pid 554] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 553] <... exit_group resumed>) = ? [pid 309] <... close resumed>) = 0 [pid 557] ioctl(4, LOOP_SET_FD, 3 [pid 556] ioctl(4, LOOP_SET_FD, 3 [pid 555] ioctl(4, LOOP_SET_FD, 3 [pid 554] <... openat resumed>) = 3 [pid 557] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 554] ioctl(3, BLKSECDISCARD, [0, 0] [pid 553] +++ exited with 0 +++ [pid 557] ioctl(4, LOOP_CLR_FD [pid 556] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 555] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 554] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=553, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 557] <... ioctl resumed>) = 0 [pid 556] ioctl(4, LOOP_CLR_FD [pid 555] ioctl(4, LOOP_CLR_FD [pid 554] exit_group(0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 556] <... ioctl resumed>) = 0 [pid 555] <... ioctl resumed>) = 0 [pid 554] <... exit_group resumed>) = ? [pid 306] <... restart_syscall resumed>) = 0 [pid 554] +++ exited with 0 +++ [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 558 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=554, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 306] <... openat resumed>) = 3 [pid 557] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... restart_syscall resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 557] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 556] ioctl(4, LOOP_SET_FD, 3 [pid 555] ioctl(4, LOOP_SET_FD, 3 [pid 306] <... ioctl resumed>) = 0 [pid 557] close(4 [pid 556] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 555] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] close(3 [pid 557] <... close resumed>) = 0 [pid 556] close(4 [pid 555] close(4 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 306] <... close resumed>) = 0 [pid 557] close(3 [pid 556] <... close resumed>) = 0 [pid 555] <... close resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 557] <... close resumed>) = 0 [pid 556] close(3 [pid 555] close(3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 557] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 559 [pid 557] <... openat resumed>) = 3 [pid 557] ioctl(3, BLKSECDISCARD, [0, 0] [pid 556] <... close resumed>) = 0 [pid 557] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 557] exit_group(0) = ? [pid 557] +++ exited with 0 +++ [pid 556] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 555] <... close resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 556] <... openat resumed>) = 3 [pid 555] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] close(3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=557, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 556] ioctl(3, BLKSECDISCARD, [0, 0] [pid 555] <... openat resumed>) = 3 [pid 310] <... close resumed>) = 0 ./strace-static-x86_64: Process 558 attached [pid 556] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 555] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 558] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 556] exit_group(0 [pid 555] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) ./strace-static-x86_64: Process 559 attached [pid 558] <... prctl resumed>) = 0 [pid 556] <... exit_group resumed>) = ? [pid 555] exit_group(0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 558] setpgid(0, 0) = 0 [pid 558] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 556] +++ exited with 0 +++ [pid 555] <... exit_group resumed>) = ? [pid 558] <... openat resumed>) = 3 [pid 307] <... openat resumed>) = 3 [pid 559] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 558] write(3, "1000", 4 [pid 555] +++ exited with 0 +++ [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 560 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=556, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] ioctl(3, LOOP_CLR_FD [pid 559] <... prctl resumed>) = 0 [pid 558] <... write resumed>) = 4 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 307] <... ioctl resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=555, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 558] close(3 [pid 308] <... openat resumed>) = 3 [pid 558] <... close resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 558] memfd_create("syzkaller", 0 [pid 308] <... ioctl resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 558] <... memfd_create resumed>) = 3 [pid 308] close(3 [pid 558] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 308] <... close resumed>) = 0 [pid 558] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 558] 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 305] <... openat resumed>) = 3 [pid 559] setpgid(0, 0 [pid 558] <... write resumed>) = 262144 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 561 [pid 307] close(3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 559] <... setpgid resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 559] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 559] <... openat resumed>) = 3 [pid 558] munmap(0x7f7bfe3d8000, 262144./strace-static-x86_64: Process 560 attached [pid 559] write(3, "1000", 4 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 562 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 563 ./strace-static-x86_64: Process 561 attached [pid 560] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 559] <... write resumed>) = 4 [pid 558] <... munmap resumed>) = 0 [pid 561] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 560] <... prctl resumed>) = 0 [pid 559] close(3 [pid 558] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 561] <... prctl resumed>) = 0 [pid 560] setpgid(0, 0 [pid 559] <... close resumed>) = 0 [pid 558] <... openat resumed>) = 4 [pid 561] setpgid(0, 0 [pid 560] <... setpgid resumed>) = 0 [pid 559] memfd_create("syzkaller", 0 [pid 558] ioctl(4, LOOP_SET_FD, 3 [pid 561] <... setpgid resumed>) = 0 [pid 560] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 559] <... memfd_create resumed>) = 3 [pid 558] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 561] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 560] <... openat resumed>) = 3 [pid 559] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 558] ioctl(4, LOOP_CLR_FD./strace-static-x86_64: Process 563 attached [pid 561] <... openat resumed>) = 3 [pid 560] write(3, "1000", 4 [pid 559] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 558] <... ioctl resumed>) = 0 [pid 561] write(3, "1000", 4 [pid 560] <... write resumed>) = 4 ./strace-static-x86_64: Process 562 attached [pid 562] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 562] setpgid(0, 0 [pid 560] close(3 [pid 559] 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 563] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 562] <... setpgid resumed>) = 0 [pid 561] <... write resumed>) = 4 [pid 560] <... close resumed>) = 0 [pid 562] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 558] ioctl(4, LOOP_SET_FD, 3 [pid 563] <... prctl resumed>) = 0 [pid 562] <... openat resumed>) = 3 [pid 561] close(3 [pid 560] memfd_create("syzkaller", 0 [pid 559] <... write resumed>) = 262144 [pid 558] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 563] setpgid(0, 0 [pid 562] write(3, "1000", 4 [pid 561] <... close resumed>) = 0 [pid 560] <... memfd_create resumed>) = 3 [pid 559] munmap(0x7f7bfe3d8000, 262144 [pid 558] close(4 [pid 562] <... write resumed>) = 4 [pid 561] memfd_create("syzkaller", 0 [pid 560] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 558] <... close resumed>) = 0 [pid 563] <... setpgid resumed>) = 0 [pid 562] close(3 [pid 561] <... memfd_create resumed>) = 3 [pid 560] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 559] <... munmap resumed>) = 0 [pid 558] close(3 [pid 563] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 562] <... close resumed>) = 0 [pid 561] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 559] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 558] <... close resumed>) = 0 [pid 563] <... openat resumed>) = 3 [pid 562] memfd_create("syzkaller", 0 [pid 561] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 560] 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 559] <... openat resumed>) = 4 [pid 558] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 562] <... memfd_create resumed>) = 3 [pid 559] ioctl(4, LOOP_SET_FD, 3 [pid 558] <... openat resumed>) = 3 [pid 562] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 559] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 558] ioctl(3, BLKSECDISCARD, [0, 0] [pid 562] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 559] ioctl(4, LOOP_CLR_FD [pid 558] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 563] write(3, "1000", 4 [pid 562] 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 561] 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 560] <... write resumed>) = 262144 [pid 559] <... ioctl resumed>) = 0 [pid 558] exit_group(0 [pid 563] <... write resumed>) = 4 [pid 562] <... write resumed>) = 262144 [pid 561] <... write resumed>) = 262144 [pid 560] munmap(0x7f7bfe3d8000, 262144 [pid 558] <... exit_group resumed>) = ? [pid 563] close(3 [pid 562] munmap(0x7f7bfe3d8000, 262144 [pid 561] munmap(0x7f7bfe3d8000, 262144 [pid 560] <... munmap resumed>) = 0 [pid 558] +++ exited with 0 +++ [pid 563] <... close resumed>) = 0 [pid 562] <... munmap resumed>) = 0 [pid 561] <... munmap resumed>) = 0 [pid 560] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=558, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 563] memfd_create("syzkaller", 0 [pid 562] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 561] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 560] <... openat resumed>) = 4 [pid 559] ioctl(4, LOOP_SET_FD, 3 [pid 563] <... memfd_create resumed>) = 3 [pid 562] <... openat resumed>) = 4 [pid 561] <... openat resumed>) = 4 [pid 560] ioctl(4, LOOP_SET_FD, 3 [pid 559] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 563] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 561] ioctl(4, LOOP_SET_FD, 3 [pid 560] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 559] close(4 [pid 563] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 562] ioctl(4, LOOP_SET_FD, 3 [pid 561] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 560] ioctl(4, LOOP_CLR_FD [pid 562] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 559] <... close resumed>) = 0 [pid 562] ioctl(4, LOOP_CLR_FD) = 0 [pid 563] 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 561] ioctl(4, LOOP_CLR_FD [pid 560] <... ioctl resumed>) = 0 [pid 559] close(3 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 561] <... ioctl resumed>) = 0 [pid 559] <... close resumed>) = 0 [pid 309] close(3 [pid 559] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] <... close resumed>) = 0 [pid 563] <... write resumed>) = 262144 [pid 562] ioctl(4, LOOP_SET_FD, 3 [pid 559] <... openat resumed>) = 3 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 563] munmap(0x7f7bfe3d8000, 262144 [pid 562] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 560] ioctl(4, LOOP_SET_FD, 3 [pid 559] ioctl(3, BLKSECDISCARD, [0, 0] [pid 563] <... munmap resumed>) = 0 [pid 562] close(4 [pid 561] ioctl(4, LOOP_SET_FD, 3 [pid 560] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 559] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 564 [pid 563] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 562] <... close resumed>) = 0 [pid 561] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 560] close(4 [pid 559] exit_group(0 [pid 563] <... openat resumed>) = 4 [pid 562] close(3 [pid 561] close(4 [pid 560] <... close resumed>) = 0 [pid 559] <... exit_group resumed>) = ? [pid 563] ioctl(4, LOOP_SET_FD, 3 [pid 562] <... close resumed>) = 0 [pid 561] <... close resumed>) = 0 [pid 560] close(3 [pid 562] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 559] +++ exited with 0 +++ [pid 562] <... openat resumed>) = 3 [pid 563] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 562] ioctl(3, BLKSECDISCARD, [0, 0] [pid 561] close(3 [pid 560] <... close resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=559, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 563] ioctl(4, LOOP_CLR_FD [pid 562] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 564 attached [pid 563] <... ioctl resumed>) = 0 [pid 562] exit_group(0 [pid 561] <... close resumed>) = 0 [pid 560] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 306] <... openat resumed>) = 3 [pid 564] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 562] <... exit_group resumed>) = ? [pid 561] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 560] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 564] <... prctl resumed>) = 0 [pid 562] +++ exited with 0 +++ [pid 561] <... openat resumed>) = 3 [pid 560] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] <... ioctl resumed>) = 0 [pid 564] setpgid(0, 0 [pid 563] ioctl(4, LOOP_SET_FD, 3 [pid 561] ioctl(3, BLKSECDISCARD, [0, 0] [pid 560] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] close(3 [pid 564] <... setpgid resumed>) = 0 [pid 563] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 561] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 560] exit_group(0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=562, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... close resumed>) = 0 [pid 564] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 563] close(4 [pid 561] exit_group(0 [pid 560] <... exit_group resumed>) = ? [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 564] <... openat resumed>) = 3 [pid 563] <... close resumed>) = 0 [pid 561] <... exit_group resumed>) = ? [pid 560] +++ exited with 0 +++ [pid 307] <... openat resumed>) = 3 [pid 564] write(3, "1000", 4 [pid 563] close(3 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 565 [pid 561] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=560, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] ioctl(3, LOOP_CLR_FD [pid 564] <... write resumed>) = 4 [pid 563] <... close resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=561, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] <... ioctl resumed>) = 0 [pid 564] close(3 [pid 563] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] <... openat resumed>) = 3 [pid 307] close(3 [pid 564] <... close resumed>) = 0 [pid 563] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 307] <... close resumed>) = 0 [pid 564] memfd_create("syzkaller", 0 [pid 563] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] <... ioctl resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 564] <... memfd_create resumed>) = 3 [pid 563] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] close(3) = 0 [pid 564] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 563] exit_group(0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 564] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 563] <... exit_group resumed>) = ? [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 566 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 567 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3 [pid 564] 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 308] <... close resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 563] +++ exited with 0 +++ [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 568 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=563, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 564] <... write resumed>) = 262144 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 564] munmap(0x7f7bfe3d8000, 262144 [pid 305] <... openat resumed>) = 3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 564] <... munmap resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 305] close(3./strace-static-x86_64: Process 565 attached ) = 0 [pid 565] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 565] <... prctl resumed>) = 0 [pid 564] openat(AT_FDCWD, "/dev/loop4", O_RDWR./strace-static-x86_64: Process 566 attached [pid 565] setpgid(0, 0 [pid 564] <... openat resumed>) = 4 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 569 [pid 565] <... setpgid resumed>) = 0 [pid 565] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 565] write(3, "1000", 4) = 4 [pid 565] close(3) = 0 [pid 565] memfd_create("syzkaller", 0) = 3 ./strace-static-x86_64: Process 568 attached [pid 565] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 568] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 565] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 568] <... prctl resumed>) = 0 [pid 566] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 565] 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 564] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 569 attached ./strace-static-x86_64: Process 567 attached [pid 568] setpgid(0, 0 [pid 566] <... prctl resumed>) = 0 [pid 564] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 569] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 568] <... setpgid resumed>) = 0 [pid 567] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 566] setpgid(0, 0 [pid 564] ioctl(4, LOOP_CLR_FD [pid 569] <... prctl resumed>) = 0 [pid 568] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 567] <... prctl resumed>) = 0 [pid 566] <... setpgid resumed>) = 0 [pid 564] <... ioctl resumed>) = 0 [pid 569] setpgid(0, 0 [pid 568] <... openat resumed>) = 3 [pid 567] setpgid(0, 0 [pid 566] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 569] <... setpgid resumed>) = 0 [pid 568] write(3, "1000", 4 [pid 567] <... setpgid resumed>) = 0 [pid 566] <... openat resumed>) = 3 [pid 569] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 568] <... write resumed>) = 4 [pid 567] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 566] write(3, "1000", 4 [pid 565] <... write resumed>) = 262144 [pid 569] <... openat resumed>) = 3 [pid 568] close(3 [pid 567] <... openat resumed>) = 3 [pid 566] <... write resumed>) = 4 [pid 565] munmap(0x7f7bfe3d8000, 262144 [pid 564] ioctl(4, LOOP_SET_FD, 3 [pid 569] write(3, "1000", 4 [pid 568] <... close resumed>) = 0 [pid 567] write(3, "1000", 4 [pid 566] close(3 [pid 565] <... munmap resumed>) = 0 [pid 564] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 569] <... write resumed>) = 4 [pid 568] memfd_create("syzkaller", 0 [pid 567] <... write resumed>) = 4 [pid 566] <... close resumed>) = 0 [pid 565] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 564] close(4 [pid 569] close(3 [pid 568] <... memfd_create resumed>) = 3 [pid 567] close(3 [pid 566] memfd_create("syzkaller", 0 [pid 565] <... openat resumed>) = 4 [pid 564] <... close resumed>) = 0 [pid 569] <... close resumed>) = 0 [pid 568] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 567] <... close resumed>) = 0 [pid 566] <... memfd_create resumed>) = 3 [pid 565] ioctl(4, LOOP_SET_FD, 3 [pid 564] close(3 [pid 569] memfd_create("syzkaller", 0 [pid 568] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 569] <... memfd_create resumed>) = 3 [pid 568] 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 567] memfd_create("syzkaller", 0 [pid 566] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 565] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 564] <... close resumed>) = 0 [pid 569] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 568] <... write resumed>) = 262144 [pid 567] <... memfd_create resumed>) = 3 [pid 566] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 565] ioctl(4, LOOP_CLR_FD [pid 564] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 569] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 568] munmap(0x7f7bfe3d8000, 262144 [pid 567] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 565] <... ioctl resumed>) = 0 [pid 568] <... munmap resumed>) = 0 [pid 568] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 566] 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 564] <... openat resumed>) = 3 [pid 568] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 569] 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 568] ioctl(4, LOOP_CLR_FD [pid 567] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 566] <... write resumed>) = 262144 [pid 564] ioctl(3, BLKSECDISCARD, [0, 0] [pid 569] <... write resumed>) = 262144 [pid 566] munmap(0x7f7bfe3d8000, 262144 [pid 564] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 569] munmap(0x7f7bfe3d8000, 262144 [pid 566] <... munmap resumed>) = 0 [pid 564] exit_group(0 [pid 569] <... munmap resumed>) = 0 [pid 566] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 564] <... exit_group resumed>) = ? [pid 569] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 568] <... ioctl resumed>) = 0 [pid 567] 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 566] <... openat resumed>) = 4 [pid 565] ioctl(4, LOOP_SET_FD, 3 [pid 564] +++ exited with 0 +++ [pid 569] <... openat resumed>) = 4 [pid 566] ioctl(4, LOOP_SET_FD, 3 [pid 569] ioctl(4, LOOP_SET_FD, 3 [pid 566] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 569] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 566] ioctl(4, LOOP_CLR_FD [pid 569] ioctl(4, LOOP_CLR_FD [pid 566] <... ioctl resumed>) = 0 [pid 569] <... ioctl resumed>) = 0 [pid 567] <... write resumed>) = 262144 [pid 565] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 569] ioctl(4, LOOP_SET_FD, 3 [pid 566] ioctl(4, LOOP_SET_FD, 3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=564, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 569] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 567] munmap(0x7f7bfe3d8000, 262144 [pid 566] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 565] close(4 [pid 569] close(4 [pid 566] close(4 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 569] <... close resumed>) = 0 [pid 566] <... close resumed>) = 0 [pid 569] close(3 [pid 566] close(3 [pid 565] <... close resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 569] <... close resumed>) = 0 [pid 567] <... munmap resumed>) = 0 [pid 566] <... close resumed>) = 0 [pid 565] close(3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 569] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 568] ioctl(4, LOOP_SET_FD, 3 [pid 567] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 566] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 569] <... openat resumed>) = 3 [pid 566] <... openat resumed>) = 3 [pid 569] ioctl(3, BLKSECDISCARD, [0, 0] [pid 566] ioctl(3, BLKSECDISCARD, [0, 0] [pid 569] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 566] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 569] exit_group(0 [pid 566] exit_group(0 [pid 569] <... exit_group resumed>) = ? [pid 566] <... exit_group resumed>) = ? [pid 569] +++ exited with 0 +++ [pid 568] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 567] <... openat resumed>) = 4 [pid 566] +++ exited with 0 +++ [pid 565] <... close resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=566, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 568] close(4 [pid 567] ioctl(4, LOOP_SET_FD, 3 [pid 565] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] close(3 [pid 307] <... openat resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] <... close resumed>) = 0 [pid 307] close(3 [pid 567] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 565] <... openat resumed>) = 3 [pid 307] <... close resumed>) = 0 [pid 568] <... close resumed>) = 0 [pid 567] ioctl(4, LOOP_CLR_FD [pid 565] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 568] close(3 [pid 567] <... ioctl resumed>) = 0 [pid 565] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=569, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 571 ./strace-static-x86_64: Process 570 attached [pid 570] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 570] setpgid(0, 0) = 0 [pid 570] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 570] write(3, "1000", 4 [pid 568] <... close resumed>) = 0 [pid 565] exit_group(0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 565] <... exit_group resumed>) = ? [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 570 [pid 568] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] <... openat resumed>) = 3 [pid 570] <... write resumed>) = 4 [pid 570] close(3) = 0 [pid 570] memfd_create("syzkaller", 0) = 3 [pid 565] +++ exited with 0 +++ [pid 570] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 568] <... openat resumed>) = 3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=565, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] <... ioctl resumed>) = 0 [pid 568] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 305] close(3 [pid 568] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 567] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... close resumed>) = 0 [pid 567] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 570] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 568] exit_group(0 [pid 567] close(4 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 567] <... close resumed>) = 0 [pid 567] close(3 [pid 568] <... exit_group resumed>) = ? [pid 567] <... close resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 572 [pid 570] 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 568] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=568, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 567] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 567] <... openat resumed>) = 3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 306] <... openat resumed>) = 3 [pid 567] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 308] ioctl(3, LOOP_CLR_FD [pid 306] <... ioctl resumed>) = 0 [pid 567] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] <... ioctl resumed>) = 0 [pid 306] close(3 [pid 308] close(3 [pid 567] exit_group(0 [pid 308] <... close resumed>) = 0 [pid 567] <... exit_group resumed>) = ? [pid 306] <... close resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 570] <... write resumed>) = 262144 [pid 570] munmap(0x7f7bfe3d8000, 262144 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 573 [pid 570] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 572 attached [pid 572] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 570] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 567] +++ exited with 0 +++ [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 574 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=567, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 570] <... openat resumed>) = 4 [pid 310] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3 [pid 572] <... prctl resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 570] ioctl(4, LOOP_SET_FD, 3 [pid 572] setpgid(0, 0 [pid 570] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 572] <... setpgid resumed>) = 0 [pid 570] ioctl(4, LOOP_CLR_FD [pid 572] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 570] <... ioctl resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 575 [pid 572] <... openat resumed>) = 3 [pid 572] write(3, "1000", 4) = 4 [pid 572] close(3) = 0 [pid 572] memfd_create("syzkaller", 0) = 3 [pid 570] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 570] close(4) = 0 [pid 570] close(3) = 0 [pid 572] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 ./strace-static-x86_64: Process 575 attached ./strace-static-x86_64: Process 571 attached [pid 570] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 570] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) ./strace-static-x86_64: Process 574 attached [pid 570] exit_group(0 [pid 574] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 570] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 573 attached [pid 575] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 574] <... prctl resumed>) = 0 [pid 572] 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 571] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 570] +++ exited with 0 +++ [pid 574] setpgid(0, 0 [pid 573] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 575] <... prctl resumed>) = 0 [pid 571] <... prctl resumed>) = 0 [pid 574] <... setpgid resumed>) = 0 [pid 573] <... prctl resumed>) = 0 [pid 572] <... write resumed>) = 262144 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=570, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 574] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 573] setpgid(0, 0 [pid 575] setpgid(0, 0 [pid 574] <... openat resumed>) = 3 [pid 573] <... setpgid resumed>) = 0 [pid 571] setpgid(0, 0 [pid 574] write(3, "1000", 4 [pid 573] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 575] <... setpgid resumed>) = 0 [pid 574] <... write resumed>) = 4 [pid 573] <... openat resumed>) = 3 [pid 574] close(3 [pid 573] write(3, "1000", 4 [pid 574] <... close resumed>) = 0 [pid 575] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 574] memfd_create("syzkaller", 0 [pid 573] <... write resumed>) = 4 [pid 571] <... setpgid resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 574] <... memfd_create resumed>) = 3 [pid 573] close(3 [pid 572] munmap(0x7f7bfe3d8000, 262144 [pid 575] <... openat resumed>) = 3 [pid 574] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 573] <... close resumed>) = 0 [pid 572] <... munmap resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 575] write(3, "1000", 4 [pid 574] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 573] memfd_create("syzkaller", 0 [pid 572] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 571] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 309] ioctl(3, LOOP_CLR_FD [pid 575] <... write resumed>) = 4 [pid 574] 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 573] <... memfd_create resumed>) = 3 [pid 572] <... openat resumed>) = 4 [pid 571] <... openat resumed>) = 3 [pid 309] <... ioctl resumed>) = 0 [pid 575] close(3 [pid 574] <... write resumed>) = 262144 [pid 573] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 572] ioctl(4, LOOP_SET_FD, 3 [pid 571] write(3, "1000", 4 [pid 309] close(3 [pid 573] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 572] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 575] <... close resumed>) = 0 [pid 573] 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 572] ioctl(4, LOOP_CLR_FD [pid 571] <... write resumed>) = 4 [pid 309] <... close resumed>) = 0 [pid 575] memfd_create("syzkaller", 0 [pid 573] <... write resumed>) = 262144 [pid 572] <... ioctl resumed>) = 0 [pid 571] close(3 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 574] munmap(0x7f7bfe3d8000, 262144 [pid 573] munmap(0x7f7bfe3d8000, 262144 [pid 574] <... munmap resumed>) = 0 [pid 573] <... munmap resumed>) = 0 [pid 575] <... memfd_create resumed>) = 3 [pid 574] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 573] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 574] <... openat resumed>) = 4 [pid 573] <... openat resumed>) = 4 [pid 571] <... close resumed>) = 0 [pid 574] ioctl(4, LOOP_SET_FD, 3 [pid 573] ioctl(4, LOOP_SET_FD, 3 [pid 574] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 573] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 574] ioctl(4, LOOP_CLR_FD [pid 573] ioctl(4, LOOP_CLR_FD [pid 574] <... ioctl resumed>) = 0 [pid 573] <... ioctl resumed>) = 0 [pid 575] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 571] memfd_create("syzkaller", 0 [pid 575] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 576 [pid 572] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 572] close(4) = 0 [pid 572] close(3) = 0 [pid 572] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 574] ioctl(4, LOOP_SET_FD, 3 [pid 573] ioctl(4, LOOP_SET_FD, 3 [pid 572] <... openat resumed>) = 3 [pid 574] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 573] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 572] ioctl(3, BLKSECDISCARD, [0, 0] [pid 574] close(4 [pid 573] close(4 [pid 572] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 574] <... close resumed>) = 0 [pid 573] <... close resumed>) = 0 [pid 572] exit_group(0 [pid 575] 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 574] close(3 [pid 573] close(3 [pid 572] <... exit_group resumed>) = ? [pid 571] <... memfd_create resumed>) = 3 [pid 575] <... write resumed>) = 262144 [pid 574] <... close resumed>) = 0 [pid 573] <... close resumed>) = 0 [pid 572] +++ exited with 0 +++ [pid 571] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 574] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 573] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 574] <... openat resumed>) = 3 [pid 573] <... openat resumed>) = 3 ./strace-static-x86_64: Process 576 attached [pid 574] ioctl(3, BLKSECDISCARD, [0, 0] [pid 573] ioctl(3, BLKSECDISCARD, [0, 0] [pid 576] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 574] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 573] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 571] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=572, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 576] <... prctl resumed>) = 0 [pid 574] exit_group(0 [pid 573] exit_group(0 [pid 576] setpgid(0, 0 [pid 574] <... exit_group resumed>) = ? [pid 573] <... exit_group resumed>) = ? [pid 576] <... setpgid resumed>) = 0 [pid 574] +++ exited with 0 +++ [pid 573] +++ exited with 0 +++ [pid 571] 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 576] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=573, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 576] <... openat resumed>) = 3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=574, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 576] write(3, "1000", 4) = 4 [pid 576] close(3) = 0 [pid 576] memfd_create("syzkaller", 0) = 3 [pid 576] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 575] munmap(0x7f7bfe3d8000, 262144 [pid 571] <... write resumed>) = 262144 [pid 576] 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 575] <... munmap resumed>) = 0 [pid 571] munmap(0x7f7bfe3d8000, 262144 [pid 576] <... write resumed>) = 262144 [pid 575] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 571] <... munmap resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 576] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 306] <... openat resumed>) = 3 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 576] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 576] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... openat resumed>) = 3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 306] ioctl(3, LOOP_CLR_FD [pid 575] <... openat resumed>) = 4 [pid 305] ioctl(3, LOOP_CLR_FD [pid 576] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 576] ioctl(4, LOOP_CLR_FD) = 0 [pid 308] <... openat resumed>) = 3 [pid 306] <... ioctl resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 575] ioctl(4, LOOP_SET_FD, 3 [pid 571] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 575] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 571] <... openat resumed>) = 4 [pid 308] ioctl(3, LOOP_CLR_FD [pid 306] close(3 [pid 305] close(3 [pid 575] ioctl(4, LOOP_CLR_FD [pid 571] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... ioctl resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 576] ioctl(4, LOOP_SET_FD, 3 [pid 575] <... ioctl resumed>) = 0 [pid 571] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] close(3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 576] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 571] ioctl(4, LOOP_CLR_FD [pid 308] <... close resumed>) = 0 [pid 576] close(4 [pid 571] <... ioctl resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 577 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 578 [pid 576] <... close resumed>) = 0 [pid 576] close(3 [pid 575] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 579 [pid 575] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 575] close(4 [pid 576] <... close resumed>) = 0 [pid 575] <... close resumed>) = 0 [pid 576] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 575] close(3 [pid 571] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 577 attached [pid 576] <... openat resumed>) = 3 [pid 575] <... close resumed>) = 0 [pid 571] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 579 attached [pid 576] ioctl(3, BLKSECDISCARD, [0, 0] [pid 575] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 571] close(4 [pid 575] <... openat resumed>) = 3 [pid 571] <... close resumed>) = 0 [pid 575] ioctl(3, BLKSECDISCARD, [0, 0] [pid 571] close(3 [pid 575] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 571] <... close resumed>) = 0 [pid 575] exit_group(0 [pid 571] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 575] <... exit_group resumed>) = ? [pid 571] <... openat resumed>) = 3 [pid 575] +++ exited with 0 +++ [pid 571] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=575, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 571] exit_group(0) = ? [pid 579] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 577] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 576] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 571] +++ exited with 0 +++ [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 579] <... prctl resumed>) = 0 [pid 577] <... prctl resumed>) = 0 [pid 576] exit_group(0 [pid 310] <... openat resumed>) = 3 [pid 579] setpgid(0, 0 [pid 577] setpgid(0, 0 [pid 576] <... exit_group resumed>) = ? [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 579] <... setpgid resumed>) = 0 [pid 577] <... setpgid resumed>) = 0 [pid 576] +++ exited with 0 +++ [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=571, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 578 attached [pid 579] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 577] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=576, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 579] <... openat resumed>) = 3 [pid 578] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 577] <... openat resumed>) = 3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 580 [pid 307] <... restart_syscall resumed>) = 0 [pid 579] write(3, "1000", 4 [pid 578] <... prctl resumed>) = 0 [pid 577] write(3, "1000", 4 [pid 579] <... write resumed>) = 4 [pid 578] setpgid(0, 0 [pid 577] <... write resumed>) = 4 [pid 579] close(3 [pid 578] <... setpgid resumed>) = 0 [pid 577] close(3 [pid 579] <... close resumed>) = 0 [pid 578] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 577] <... close resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 579] memfd_create("syzkaller", 0 [pid 578] <... openat resumed>) = 3 [pid 577] memfd_create("syzkaller", 0 [pid 307] <... openat resumed>) = 3 [pid 579] <... memfd_create resumed>) = 3 [pid 578] write(3, "1000", 4 [pid 577] <... memfd_create resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 579] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 578] <... write resumed>) = 4 [pid 577] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] <... ioctl resumed>) = 0 [pid 579] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 578] close(3 [pid 577] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 309] <... openat resumed>) = 3 [pid 307] close(3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3 [pid 579] 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 309] <... close resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 577] 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 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 581 ./strace-static-x86_64: Process 580 attached [pid 579] <... write resumed>) = 262144 [pid 580] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 580] setpgid(0, 0) = 0 [pid 577] <... write resumed>) = 262144 [pid 579] munmap(0x7f7bfe3d8000, 262144 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 582 [pid 578] <... close resumed>) = 0 [pid 580] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 579] <... munmap resumed>) = 0 [pid 577] munmap(0x7f7bfe3d8000, 262144 [pid 580] <... openat resumed>) = 3 [pid 579] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 578] memfd_create("syzkaller", 0 [pid 577] <... munmap resumed>) = 0 [pid 580] write(3, "1000", 4 [pid 579] <... openat resumed>) = 4 [pid 578] <... memfd_create resumed>) = 3 [pid 577] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 580] <... write resumed>) = 4 [pid 579] ioctl(4, LOOP_SET_FD, 3 [pid 578] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 577] <... openat resumed>) = 4 [pid 580] close(3 [pid 579] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 578] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 577] ioctl(4, LOOP_SET_FD, 3 [pid 580] <... close resumed>) = 0 [pid 579] ioctl(4, LOOP_CLR_FD [pid 580] memfd_create("syzkaller", 0) = 3 [pid 580] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 579] <... ioctl resumed>) = 0 [pid 578] 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 577] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 580] 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 578] <... write resumed>) = 262144 [pid 577] ioctl(4, LOOP_CLR_FD./strace-static-x86_64: Process 581 attached [pid 580] <... write resumed>) = 262144 [pid 578] munmap(0x7f7bfe3d8000, 262144 [pid 577] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 582 attached [pid 581] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 579] ioctl(4, LOOP_SET_FD, 3 [pid 578] <... munmap resumed>) = 0 [pid 582] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 581] <... prctl resumed>) = 0 [pid 579] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 578] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 582] <... prctl resumed>) = 0 [pid 581] setpgid(0, 0 [pid 579] close(4 [pid 578] <... openat resumed>) = 4 [pid 582] setpgid(0, 0 [pid 581] <... setpgid resumed>) = 0 [pid 579] <... close resumed>) = 0 [pid 578] ioctl(4, LOOP_SET_FD, 3 [pid 582] <... setpgid resumed>) = 0 [pid 581] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 580] munmap(0x7f7bfe3d8000, 262144 [pid 579] close(3 [pid 578] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 577] ioctl(4, LOOP_SET_FD, 3 [pid 582] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 581] <... openat resumed>) = 3 [pid 580] <... munmap resumed>) = 0 [pid 582] <... openat resumed>) = 3 [pid 581] write(3, "1000", 4 [pid 580] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 579] <... close resumed>) = 0 [pid 578] ioctl(4, LOOP_CLR_FD [pid 577] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 582] write(3, "1000", 4 [pid 581] <... write resumed>) = 4 [pid 580] <... openat resumed>) = 4 [pid 582] <... write resumed>) = 4 [pid 581] close(3 [pid 580] ioctl(4, LOOP_SET_FD, 3 [pid 579] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 578] <... ioctl resumed>) = 0 [pid 577] close(4 [pid 582] close(3 [pid 581] <... close resumed>) = 0 [pid 580] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 579] <... openat resumed>) = 3 [pid 577] <... close resumed>) = 0 [pid 582] <... close resumed>) = 0 [pid 579] ioctl(3, BLKSECDISCARD, [0, 0] [pid 582] memfd_create("syzkaller", 0 [pid 581] memfd_create("syzkaller", 0 [pid 580] ioctl(4, LOOP_CLR_FD [pid 579] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 577] close(3 [pid 582] <... memfd_create resumed>) = 3 [pid 581] <... memfd_create resumed>) = 3 [pid 580] <... ioctl resumed>) = 0 [pid 579] exit_group(0 [pid 582] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 581] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 579] <... exit_group resumed>) = ? [pid 578] ioctl(4, LOOP_SET_FD, 3 [pid 577] <... close resumed>) = 0 [pid 582] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 581] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 582] 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 581] 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 579] +++ exited with 0 +++ [pid 578] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 577] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 582] <... write resumed>) = 262144 [pid 581] <... write resumed>) = 262144 [pid 580] ioctl(4, LOOP_SET_FD, 3 [pid 578] close(4 [pid 577] <... openat resumed>) = 3 [pid 582] munmap(0x7f7bfe3d8000, 262144 [pid 581] munmap(0x7f7bfe3d8000, 262144 [pid 580] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 578] <... close resumed>) = 0 [pid 577] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=579, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 582] <... munmap resumed>) = 0 [pid 581] <... munmap resumed>) = 0 [pid 580] close(4 [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 582] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 581] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 580] <... close resumed>) = 0 [pid 578] close(3 [pid 577] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] <... restart_syscall resumed>) = 0 [pid 582] <... openat resumed>) = 4 [pid 581] <... openat resumed>) = 4 [pid 580] close(3 [pid 582] ioctl(4, LOOP_SET_FD, 3 [pid 581] ioctl(4, LOOP_SET_FD, 3 [pid 580] <... close resumed>) = 0 [pid 578] <... close resumed>) = 0 [pid 577] exit_group(0 [pid 582] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 581] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 580] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 578] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 577] <... exit_group resumed>) = ? [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 582] ioctl(4, LOOP_CLR_FD [pid 581] ioctl(4, LOOP_CLR_FD [pid 580] <... openat resumed>) = 3 [pid 578] <... openat resumed>) = 3 [pid 308] <... openat resumed>) = 3 [pid 582] <... ioctl resumed>) = 0 [pid 581] <... ioctl resumed>) = 0 [pid 580] ioctl(3, BLKSECDISCARD, [0, 0] [pid 578] ioctl(3, BLKSECDISCARD, [0, 0] [pid 577] +++ exited with 0 +++ [pid 308] ioctl(3, LOOP_CLR_FD [pid 580] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 578] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] <... ioctl resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=577, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 580] exit_group(0 [pid 578] exit_group(0 [pid 308] close(3 [pid 580] <... exit_group resumed>) = ? [pid 578] <... exit_group resumed>) = ? [pid 308] <... close resumed>) = 0 [pid 580] +++ exited with 0 +++ [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 582] ioctl(4, LOOP_SET_FD, 3 [pid 581] ioctl(4, LOOP_SET_FD, 3 [pid 578] +++ exited with 0 +++ [pid 306] <... openat resumed>) = 3 [pid 582] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 581] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=580, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 583 [pid 306] ioctl(3, LOOP_CLR_FD [pid 582] close(4 [pid 581] close(4 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 306] <... ioctl resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=578, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 582] <... close resumed>) = 0 [pid 581] <... close resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 306] close(3 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 582] close(3 [pid 581] close(3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 306] <... close resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 582] <... close resumed>) = 0 [pid 581] <... close resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 583 attached [pid 582] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 581] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] close(3 [pid 305] <... ioctl resumed>) = 0 [pid 583] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 582] <... openat resumed>) = 3 [pid 581] <... openat resumed>) = 3 [pid 310] <... close resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 584 [pid 305] close(3 [pid 583] <... prctl resumed>) = 0 [pid 582] ioctl(3, BLKSECDISCARD, [0, 0] [pid 581] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... close resumed>) = 0 [pid 583] setpgid(0, 0 [pid 582] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 581] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 584 attached [pid 583] <... setpgid resumed>) = 0 [pid 582] exit_group(0 [pid 581] exit_group(0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 585 [pid 584] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 583] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 582] <... exit_group resumed>) = ? [pid 581] <... exit_group resumed>) = ? [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 586 [pid 584] <... prctl resumed>) = 0 [pid 583] <... openat resumed>) = 3 [pid 582] +++ exited with 0 +++ [pid 581] +++ exited with 0 +++ ./strace-static-x86_64: Process 586 attached [pid 584] setpgid(0, 0 [pid 583] write(3, "1000", 4 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=582, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 586] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 584] <... setpgid resumed>) = 0 [pid 583] <... write resumed>) = 4 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=581, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 586] <... prctl resumed>) = 0 [pid 584] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 583] close(3 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 586] setpgid(0, 0 [pid 584] <... openat resumed>) = 3 [pid 583] <... close resumed>) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 586] <... setpgid resumed>) = 0 [pid 584] write(3, "1000", 4 [pid 583] memfd_create("syzkaller", 0 [pid 586] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 584] <... write resumed>) = 4 [pid 583] <... memfd_create resumed>) = 3 [pid 586] <... openat resumed>) = 3 [pid 584] close(3 [pid 583] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 586] write(3, "1000", 4 [pid 584] <... close resumed>) = 0 [pid 583] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 309] <... openat resumed>) = 3 [pid 584] memfd_create("syzkaller", 0 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 586] <... write resumed>) = 4 [pid 584] <... memfd_create resumed>) = 3 [pid 583] 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 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 586] close(3 [pid 584] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 587 ./strace-static-x86_64: Process 585 attached [pid 585] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 583] <... write resumed>) = 262144 [pid 586] <... close resumed>) = 0 [pid 585] <... prctl resumed>) = 0 [pid 584] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 583] munmap(0x7f7bfe3d8000, 262144 [pid 307] <... openat resumed>) = 3 [pid 585] setpgid(0, 0) = 0 [pid 585] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 585] write(3, "1000", 4) = 4 [pid 584] 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 307] ioctl(3, LOOP_CLR_FD [pid 586] memfd_create("syzkaller", 0 [pid 585] close(3 [pid 583] <... munmap resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 585] <... close resumed>) = 0 [pid 583] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 307] close(3 [pid 585] memfd_create("syzkaller", 0 [pid 586] <... memfd_create resumed>) = 3 [pid 585] <... memfd_create resumed>) = 3 [pid 584] <... write resumed>) = 262144 [pid 583] <... openat resumed>) = 4 [pid 307] <... close resumed>) = 0 [pid 586] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 584] munmap(0x7f7bfe3d8000, 262144 [pid 583] ioctl(4, LOOP_SET_FD, 3 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 586] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 585] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 584] <... munmap resumed>) = 0 [pid 583] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 585] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 584] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 583] ioctl(4, LOOP_CLR_FD [pid 586] 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 585] 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 584] <... openat resumed>) = 4 [pid 583] <... ioctl resumed>) = 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 588 [pid 586] <... write resumed>) = 262144 [pid 585] <... write resumed>) = 262144 [pid 584] ioctl(4, LOOP_SET_FD, 3 [pid 586] munmap(0x7f7bfe3d8000, 262144 [pid 584] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 584] ioctl(4, LOOP_CLR_FD [pid 586] <... munmap resumed>) = 0 [pid 584] <... ioctl resumed>) = 0 [pid 586] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 586] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 587 attached ) = -1 EBUSY (Device or resource busy) [pid 586] ioctl(4, LOOP_CLR_FD [pid 583] ioctl(4, LOOP_SET_FD, 3 [pid 587] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 586] <... ioctl resumed>) = 0 [pid 585] munmap(0x7f7bfe3d8000, 262144 [pid 583] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 587] <... prctl resumed>) = 0 [pid 585] <... munmap resumed>) = 0 [pid 584] ioctl(4, LOOP_SET_FD, 3 [pid 583] close(4 [pid 585] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 585] ioctl(4, LOOP_SET_FD, 3 [pid 583] <... close resumed>) = 0 [pid 587] setpgid(0, 0 [pid 584] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 583] close(3 [pid 587] <... setpgid resumed>) = 0 [pid 584] close(4 [pid 585] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 585] ioctl(4, LOOP_CLR_FD) = 0 [pid 584] <... close resumed>) = 0 [pid 583] <... close resumed>) = 0 [pid 587] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 584] close(3 [pid 583] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 586] ioctl(4, LOOP_SET_FD, 3 [pid 585] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 585] close(4 [pid 584] <... close resumed>) = 0 [pid 587] <... openat resumed>) = 3 [pid 586] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 585] <... close resumed>) = 0 [pid 584] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 583] <... openat resumed>) = 3 ./strace-static-x86_64: Process 588 attached [pid 587] write(3, "1000", 4 [pid 586] close(4 [pid 585] close(3 [pid 584] <... openat resumed>) = 3 [pid 583] ioctl(3, BLKSECDISCARD, [0, 0] [pid 588] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 587] <... write resumed>) = 4 [pid 586] <... close resumed>) = 0 [pid 585] <... close resumed>) = 0 [pid 584] ioctl(3, BLKSECDISCARD, [0, 0] [pid 583] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 588] <... prctl resumed>) = 0 [pid 585] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 588] setpgid(0, 0 [pid 585] <... openat resumed>) = 3 [pid 588] <... setpgid resumed>) = 0 [pid 585] ioctl(3, BLKSECDISCARD, [0, 0] [pid 588] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 585] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 588] <... openat resumed>) = 3 [pid 585] exit_group(0 [pid 588] write(3, "1000", 4 [pid 585] <... exit_group resumed>) = ? [pid 588] <... write resumed>) = 4 [pid 585] +++ exited with 0 +++ [pid 584] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 588] close(3 [pid 587] close(3 [pid 586] close(3 [pid 584] exit_group(0 [pid 583] exit_group(0 [pid 588] <... close resumed>) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=585, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 588] memfd_create("syzkaller", 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 588] <... memfd_create resumed>) = 3 [pid 587] <... close resumed>) = 0 [pid 586] <... close resumed>) = 0 [pid 584] <... exit_group resumed>) = ? [pid 583] <... exit_group resumed>) = ? [pid 310] <... openat resumed>) = 3 [pid 588] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 586] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] ioctl(3, LOOP_CLR_FD [pid 588] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 584] +++ exited with 0 +++ [pid 310] <... ioctl resumed>) = 0 [pid 588] 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 587] memfd_create("syzkaller", 0 [pid 586] <... openat resumed>) = 3 [pid 583] +++ exited with 0 +++ [pid 310] close(3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=584, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 588] <... write resumed>) = 262144 [pid 587] <... memfd_create resumed>) = 3 [pid 586] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] <... close resumed>) = 0 [pid 588] munmap(0x7f7bfe3d8000, 262144 [pid 587] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 586] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=583, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 588] <... munmap resumed>) = 0 [pid 587] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 586] exit_group(0 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 588] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 589 [pid 308] <... openat resumed>) = 3 [pid 306] <... openat resumed>) = 3 [pid 588] <... openat resumed>) = 4 [pid 587] 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 586] <... exit_group resumed>) = ? [pid 308] ioctl(3, LOOP_CLR_FD [pid 306] ioctl(3, LOOP_CLR_FD [pid 588] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... ioctl resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 588] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 587] <... write resumed>) = 262144 [pid 308] close(3 [pid 306] close(3 [pid 588] ioctl(4, LOOP_CLR_FD [pid 586] +++ exited with 0 +++ [pid 587] munmap(0x7f7bfe3d8000, 262144 [pid 308] <... close resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 588] <... ioctl resumed>) = 0 [pid 587] <... munmap resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 587] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=586, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 587] <... openat resumed>) = 4 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 590 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 591 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 587] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... restart_syscall resumed>) = 0 [pid 587] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 590 attached [pid 587] ioctl(4, LOOP_CLR_FD [pid 590] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 588] ioctl(4, LOOP_SET_FD, 3 [pid 587] <... ioctl resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 589 attached [pid 590] <... prctl resumed>) = 0 [pid 588] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... openat resumed>) = 3 ./strace-static-x86_64: Process 591 attached [pid 590] setpgid(0, 0 [pid 589] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 588] close(4 [pid 305] ioctl(3, LOOP_CLR_FD [pid 591] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 590] <... setpgid resumed>) = 0 [pid 589] <... prctl resumed>) = 0 [pid 588] <... close resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 591] <... prctl resumed>) = 0 [pid 590] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 589] setpgid(0, 0 [pid 588] close(3 [pid 305] close(3 [pid 591] setpgid(0, 0 [pid 590] <... openat resumed>) = 3 [pid 589] <... setpgid resumed>) = 0 [pid 588] <... close resumed>) = 0 [pid 587] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... close resumed>) = 0 [pid 591] <... setpgid resumed>) = 0 [pid 590] write(3, "1000", 4 [pid 589] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 588] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 587] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 591] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 590] <... write resumed>) = 4 [pid 589] <... openat resumed>) = 3 [pid 588] <... openat resumed>) = 3 [pid 587] close(4 [pid 591] <... openat resumed>) = 3 [pid 590] close(3 [pid 589] write(3, "1000", 4 [pid 588] ioctl(3, BLKSECDISCARD, [0, 0] [pid 587] <... close resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 592 [pid 591] write(3, "1000", 4 [pid 590] <... close resumed>) = 0 [pid 589] <... write resumed>) = 4 [pid 588] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 587] close(3 [pid 591] <... write resumed>) = 4 [pid 590] memfd_create("syzkaller", 0 [pid 589] close(3 [pid 588] exit_group(0 [pid 589] <... close resumed>) = 0 [pid 588] <... exit_group resumed>) = ? [pid 587] <... close resumed>) = 0 [pid 591] close(3 [pid 590] <... memfd_create resumed>) = 3 [pid 589] memfd_create("syzkaller", 0 [pid 588] +++ exited with 0 +++ [pid 587] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000./strace-static-x86_64: Process 592 attached [pid 591] <... close resumed>) = 0 [pid 590] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 589] <... memfd_create resumed>) = 3 [pid 587] <... openat resumed>) = 3 [pid 592] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 591] memfd_create("syzkaller", 0 [pid 590] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 589] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 587] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=588, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 591] <... memfd_create resumed>) = 3 [pid 589] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 592] <... prctl resumed>) = 0 [pid 591] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 590] 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 589] 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 587] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 592] setpgid(0, 0 [pid 591] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 590] <... write resumed>) = 262144 [pid 589] <... write resumed>) = 262144 [pid 587] exit_group(0 [pid 592] <... setpgid resumed>) = 0 [pid 589] munmap(0x7f7bfe3d8000, 262144 [pid 307] <... restart_syscall resumed>) = 0 [pid 589] <... munmap resumed>) = 0 [pid 589] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 592] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 591] 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 590] munmap(0x7f7bfe3d8000, 262144 [pid 589] <... openat resumed>) = 4 [pid 587] <... exit_group resumed>) = ? [pid 589] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 589] ioctl(4, LOOP_CLR_FD) = 0 [pid 591] <... write resumed>) = 262144 [pid 587] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=587, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 590] <... munmap resumed>) = 0 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 592] <... openat resumed>) = 3 [pid 591] munmap(0x7f7bfe3d8000, 262144 [pid 590] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 592] write(3, "1000", 4 [pid 591] <... munmap resumed>) = 0 [pid 590] <... openat resumed>) = 4 [pid 307] <... openat resumed>) = 3 [pid 592] <... write resumed>) = 4 [pid 591] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 590] ioctl(4, LOOP_SET_FD, 3 [pid 589] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... restart_syscall resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 592] close(3 [pid 591] <... openat resumed>) = 4 [pid 590] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 589] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] <... ioctl resumed>) = 0 [pid 592] <... close resumed>) = 0 [pid 591] ioctl(4, LOOP_SET_FD, 3 [pid 590] ioctl(4, LOOP_CLR_FD [pid 589] close(4) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 589] close(3 [pid 309] <... openat resumed>) = 3 [pid 589] <... close resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 589] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] <... ioctl resumed>) = 0 [pid 589] <... openat resumed>) = 3 [pid 309] close(3 [pid 589] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] <... close resumed>) = 0 [pid 589] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 590] <... ioctl resumed>) = 0 [pid 589] exit_group(0 [pid 307] close(3 [pid 592] memfd_create("syzkaller", 0 [pid 591] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 589] <... exit_group resumed>) = ? [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 593 [pid 307] <... close resumed>) = 0 [pid 592] <... memfd_create resumed>) = 3 [pid 591] ioctl(4, LOOP_CLR_FD [pid 589] +++ exited with 0 +++ [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 592] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 591] <... ioctl resumed>) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=589, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 592] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 590] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 593 attached [pid 593] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 593] setpgid(0, 0./strace-static-x86_64: Process 594 attached [pid 592] 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 590] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 594 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 592] <... write resumed>) = 262144 [pid 591] ioctl(4, LOOP_SET_FD, 3 [pid 590] close(4 [pid 310] <... openat resumed>) = 3 [pid 592] munmap(0x7f7bfe3d8000, 262144 [pid 591] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 590] <... close resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 592] <... munmap resumed>) = 0 [pid 591] close(4 [pid 590] close(3 [pid 310] <... ioctl resumed>) = 0 [pid 592] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 591] <... close resumed>) = 0 [pid 310] close(3) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 592] <... openat resumed>) = 4 [pid 591] close(3 [pid 590] <... close resumed>) = 0 [pid 592] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 595 [pid 593] <... setpgid resumed>) = 0 [pid 593] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 592] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 591] <... close resumed>) = 0 [pid 590] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 592] ioctl(4, LOOP_CLR_FD [pid 591] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 592] <... ioctl resumed>) = 0 [pid 590] <... openat resumed>) = 3 [pid 591] <... openat resumed>) = 3 [pid 590] ioctl(3, BLKSECDISCARD, [0, 0] [pid 591] ioctl(3, BLKSECDISCARD, [0, 0] [pid 590] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 591] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 590] exit_group(0 [pid 593] <... openat resumed>) = 3 [pid 593] write(3, "1000", 4) = 4 [pid 593] close(3) = 0 [pid 590] <... exit_group resumed>) = ? [pid 592] ioctl(4, LOOP_SET_FD, 3 [pid 591] exit_group(0 [pid 593] memfd_create("syzkaller", 0) = 3 [pid 592] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 591] <... exit_group resumed>) = ? [pid 590] +++ exited with 0 +++ [pid 593] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 592] close(4 [pid 593] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 592] <... close resumed>) = 0 [pid 591] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=590, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 595 attached [pid 593] 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 592] close(3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=591, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] ioctl(3, LOOP_CLR_FD [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 595] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 592] <... close resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 595] <... prctl resumed>) = 0 [pid 594] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 592] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] close(3 [pid 595] setpgid(0, 0 [pid 594] <... prctl resumed>) = 0 [pid 592] <... openat resumed>) = 3 [pid 308] <... close resumed>) = 0 [pid 595] <... setpgid resumed>) = 0 [pid 594] setpgid(0, 0 [pid 592] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 595] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 594] <... setpgid resumed>) = 0 [pid 593] <... write resumed>) = 262144 [pid 592] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] <... openat resumed>) = 3 [pid 595] <... openat resumed>) = 3 [pid 594] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 592] exit_group(0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 596 [pid 306] ioctl(3, LOOP_CLR_FD [pid 595] write(3, "1000", 4 [pid 594] <... openat resumed>) = 3 [pid 592] <... exit_group resumed>) = ? [pid 306] <... ioctl resumed>) = 0 [pid 595] <... write resumed>) = 4 [pid 594] write(3, "1000", 4 [pid 306] close(3./strace-static-x86_64: Process 596 attached [pid 595] close(3 [pid 594] <... write resumed>) = 4 [pid 592] +++ exited with 0 +++ [pid 306] <... close resumed>) = 0 [pid 596] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 595] <... close resumed>) = 0 [pid 594] close(3 [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=592, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 596] <... prctl resumed>) = 0 [pid 595] memfd_create("syzkaller", 0 [pid 594] <... close resumed>) = 0 [pid 593] munmap(0x7f7bfe3d8000, 262144 [pid 596] setpgid(0, 0 [pid 595] <... memfd_create resumed>) = 3 [pid 594] memfd_create("syzkaller", 0 [pid 593] <... munmap resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 597 [pid 596] <... setpgid resumed>) = 0 [pid 595] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 594] <... memfd_create resumed>) = 3 [pid 593] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 596] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 595] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 594] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 593] <... openat resumed>) = 4 [pid 594] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 593] ioctl(4, LOOP_SET_FD, 3 [pid 596] <... openat resumed>) = 3 [pid 595] 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 594] 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 593] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 597 attached [pid 596] write(3, "1000", 4 [pid 595] <... write resumed>) = 262144 [pid 594] <... write resumed>) = 262144 [pid 593] ioctl(4, LOOP_CLR_FD [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 597] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 596] <... write resumed>) = 4 [pid 595] munmap(0x7f7bfe3d8000, 262144 [pid 594] munmap(0x7f7bfe3d8000, 262144 [pid 593] <... ioctl resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 597] <... prctl resumed>) = 0 [pid 596] close(3 [pid 595] <... munmap resumed>) = 0 [pid 594] <... munmap resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 597] setpgid(0, 0 [pid 596] <... close resumed>) = 0 [pid 595] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 594] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 305] <... ioctl resumed>) = 0 [pid 597] <... setpgid resumed>) = 0 [pid 596] memfd_create("syzkaller", 0 [pid 595] <... openat resumed>) = 4 [pid 594] <... openat resumed>) = 4 [pid 305] close(3 [pid 597] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 596] <... memfd_create resumed>) = 3 [pid 595] ioctl(4, LOOP_SET_FD, 3 [pid 594] ioctl(4, LOOP_SET_FD, 3 [pid 593] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... close resumed>) = 0 [pid 594] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 593] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 596] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 595] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 594] ioctl(4, LOOP_CLR_FD [pid 593] close(4 [pid 596] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 595] ioctl(4, LOOP_CLR_FD [pid 594] <... ioctl resumed>) = 0 [pid 593] <... close resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 598 [pid 595] <... ioctl resumed>) = 0 [pid 593] close(3 [pid 596] 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 593] <... close resumed>) = 0 [pid 593] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 593] ioctl(3, BLKSECDISCARD, [0, 0] [pid 594] ioctl(4, LOOP_SET_FD, 3 [pid 593] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 596] <... write resumed>) = 262144 [pid 594] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 593] exit_group(0 [pid 595] ioctl(4, LOOP_SET_FD, 3 [pid 594] close(4 [pid 596] munmap(0x7f7bfe3d8000, 262144 [pid 593] <... exit_group resumed>) = ? [pid 595] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 594] <... close resumed>) = 0 [pid 593] +++ exited with 0 +++ [pid 597] <... openat resumed>) = 3 [pid 596] <... munmap resumed>) = 0 [pid 595] close(4 [pid 594] close(3 [pid 597] write(3, "1000", 4 [pid 596] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 595] <... close resumed>) = 0 [pid 594] <... close resumed>) = 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=593, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 597] <... write resumed>) = 4 [pid 596] <... openat resumed>) = 4 [pid 595] close(3 [pid 594] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 597] close(3 [pid 596] ioctl(4, LOOP_SET_FD, 3 [pid 594] <... openat resumed>) = 3 [pid 309] <... openat resumed>) = 3 [pid 597] <... close resumed>) = 0 [pid 596] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 595] <... close resumed>) = 0 [pid 594] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] ioctl(3, LOOP_CLR_FD [pid 597] memfd_create("syzkaller", 0 [pid 596] ioctl(4, LOOP_CLR_FD [pid 595] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 594] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] <... ioctl resumed>) = 0 [pid 597] <... memfd_create resumed>) = 3 [pid 596] <... ioctl resumed>) = 0 [pid 595] <... openat resumed>) = 3 [pid 594] exit_group(0 [pid 309] close(3 [pid 597] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 595] ioctl(3, BLKSECDISCARD, [0, 0] [pid 594] <... exit_group resumed>) = ? [pid 309] <... close resumed>) = 0 ./strace-static-x86_64: Process 598 attached [pid 597] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 595] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 594] +++ exited with 0 +++ [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 598] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 597] 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 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 599 [pid 598] setpgid(0, 0 [pid 596] ioctl(4, LOOP_SET_FD, 3 [pid 595] exit_group(0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=594, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 598] <... setpgid resumed>) = 0 [pid 596] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 595] <... exit_group resumed>) = ? [pid 598] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 596] close(4 [pid 598] <... openat resumed>) = 3 [pid 595] +++ exited with 0 +++ [pid 598] write(3, "1000", 4 [pid 597] <... write resumed>) = 262144 [pid 596] <... close resumed>) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=595, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 598] <... write resumed>) = 4 [pid 597] munmap(0x7f7bfe3d8000, 262144 [pid 596] close(3 [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 307] <... openat resumed>) = 3 [pid 598] close(3 [pid 310] <... restart_syscall resumed>) = 0 [pid 598] <... close resumed>) = 0 [pid 598] memfd_create("syzkaller", 0 [pid 596] <... close resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 598] <... memfd_create resumed>) = 3 [pid 597] <... munmap resumed>) = 0 [pid 596] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 307] <... ioctl resumed>) = 0 [pid 598] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 597] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 596] <... openat resumed>) = 3 [pid 310] <... openat resumed>) = 3 [pid 307] close(3 [pid 598] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 597] <... openat resumed>) = 4 [pid 596] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] ioctl(3, LOOP_CLR_FD [pid 307] <... close resumed>) = 0 [pid 598] 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 597] ioctl(4, LOOP_SET_FD, 3 [pid 596] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] <... ioctl resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 599 attached [pid 598] <... write resumed>) = 262144 [pid 597] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 596] exit_group(0 [pid 310] close(3 [pid 599] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 598] munmap(0x7f7bfe3d8000, 262144 [pid 597] ioctl(4, LOOP_CLR_FD [pid 596] <... exit_group resumed>) = ? [pid 310] <... close resumed>) = 0 [pid 599] <... prctl resumed>) = 0 [pid 598] <... munmap resumed>) = 0 [pid 597] <... ioctl resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 599] setpgid(0, 0 [pid 598] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 596] +++ exited with 0 +++ [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 600 [pid 599] <... setpgid resumed>) = 0 [pid 598] <... openat resumed>) = 4 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 601 [pid 599] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 598] ioctl(4, LOOP_SET_FD, 3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=596, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 601 attached [pid 599] <... openat resumed>) = 3 [pid 598] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 597] ioctl(4, LOOP_SET_FD, 3 [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 601] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 599] write(3, "1000", 4 [pid 598] ioctl(4, LOOP_CLR_FD [pid 597] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] <... restart_syscall resumed>) = 0 [pid 601] <... prctl resumed>) = 0 [pid 599] <... write resumed>) = 4 [pid 598] <... ioctl resumed>) = 0 [pid 597] close(4 [pid 601] setpgid(0, 0 [pid 599] close(3 [pid 597] <... close resumed>) = 0 ./strace-static-x86_64: Process 600 attached [pid 601] <... setpgid resumed>) = 0 [pid 599] <... close resumed>) = 0 [pid 597] close(3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 599] memfd_create("syzkaller", 0 [pid 308] <... openat resumed>) = 3 [pid 601] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 600] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 599] <... memfd_create resumed>) = 3 [pid 598] ioctl(4, LOOP_SET_FD, 3 [pid 597] <... close resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 601] <... openat resumed>) = 3 [pid 600] <... prctl resumed>) = 0 [pid 599] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 598] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 597] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] <... ioctl resumed>) = 0 [pid 601] write(3, "1000", 4 [pid 600] setpgid(0, 0 [pid 599] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 598] close(4 [pid 597] <... openat resumed>) = 3 [pid 308] close(3 [pid 601] <... write resumed>) = 4 [pid 600] <... setpgid resumed>) = 0 [pid 599] 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 598] <... close resumed>) = 0 [pid 597] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] <... close resumed>) = 0 [pid 601] close(3 [pid 600] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 599] <... write resumed>) = 262144 [pid 598] close(3 [pid 597] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 601] <... close resumed>) = 0 [pid 600] <... openat resumed>) = 3 [pid 599] munmap(0x7f7bfe3d8000, 262144 [pid 598] <... close resumed>) = 0 [pid 597] exit_group(0 [pid 601] memfd_create("syzkaller", 0 [pid 600] write(3, "1000", 4 [pid 599] <... munmap resumed>) = 0 [pid 598] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 597] <... exit_group resumed>) = ? [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 602 [pid 601] <... memfd_create resumed>) = 3 [pid 600] <... write resumed>) = 4 [pid 599] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 598] <... openat resumed>) = 3 [pid 601] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 600] close(3 [pid 599] <... openat resumed>) = 4 [pid 598] ioctl(3, BLKSECDISCARD, [0, 0] [pid 597] +++ exited with 0 +++ [pid 601] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 600] <... close resumed>) = 0 [pid 599] ioctl(4, LOOP_SET_FD, 3 [pid 598] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=597, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 599] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 598] exit_group(0 [pid 599] ioctl(4, LOOP_CLR_FD [pid 598] <... exit_group resumed>) = ? [pid 601] 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 600] memfd_create("syzkaller", 0 [pid 599] <... ioctl resumed>) = 0 [pid 598] +++ exited with 0 +++ [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=598, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 601] <... write resumed>) = 262144 [pid 306] close(3 [pid 601] munmap(0x7f7bfe3d8000, 262144 [pid 600] <... memfd_create resumed>) = 3 [pid 306] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 602 attached [pid 601] <... munmap resumed>) = 0 [pid 600] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 602] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 601] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 600] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 599] ioctl(4, LOOP_SET_FD, 3 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 603 [pid 602] <... prctl resumed>) = 0 [pid 601] <... openat resumed>) = 4 [pid 599] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 599] close(4 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 599] <... close resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 602] setpgid(0, 0 [pid 601] ioctl(4, LOOP_SET_FD, 3 [pid 600] 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 599] close(3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 602] <... setpgid resumed>) = 0 [pid 601] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 600] <... write resumed>) = 262144 [pid 599] <... close resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 602] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 601] ioctl(4, LOOP_CLR_FD [pid 600] munmap(0x7f7bfe3d8000, 262144 [pid 599] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] close(3 [pid 602] <... openat resumed>) = 3 [pid 601] <... ioctl resumed>) = 0 [pid 600] <... munmap resumed>) = 0 [pid 599] <... openat resumed>) = 3 [pid 305] <... close resumed>) = 0 [pid 599] ioctl(3, BLKSECDISCARD, [0, 0] [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 599] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 599] exit_group(0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 604 [pid 599] <... exit_group resumed>) = ? [pid 599] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=599, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 604 attached [pid 604] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 604] setpgid(0, 0) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 602] write(3, "1000", 4 [pid 600] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 309] ioctl(3, LOOP_CLR_FD [pid 602] <... write resumed>) = 4 [pid 600] <... openat resumed>) = 4 [pid 309] <... ioctl resumed>) = 0 [pid 602] close(3 [pid 600] ioctl(4, LOOP_SET_FD, 3 [pid 309] close(3) = 0 [pid 601] ioctl(4, LOOP_SET_FD, 3 [pid 600] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 602] <... close resumed>) = 0 ./strace-static-x86_64: Process 603 attached [pid 602] memfd_create("syzkaller", 0 [pid 601] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 600] ioctl(4, LOOP_CLR_FD [pid 603] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 602] <... memfd_create resumed>) = 3 [pid 601] close(4 [pid 600] <... ioctl resumed>) = 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 605 [pid 603] <... prctl resumed>) = 0 [pid 602] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 601] <... close resumed>) = 0 [pid 603] setpgid(0, 0 [pid 602] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 601] close(3 [pid 604] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 601] <... close resumed>) = 0 [pid 600] ioctl(4, LOOP_SET_FD, 3 [pid 601] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 600] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 604] write(3, "1000", 4 [pid 601] <... openat resumed>) = 3 [pid 600] close(4 [pid 604] <... write resumed>) = 4 [pid 601] ioctl(3, BLKSECDISCARD, [0, 0] [pid 600] <... close resumed>) = 0 [pid 602] 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 603] <... setpgid resumed>) = 0 [pid 604] close(3 [pid 601] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 600] close(3 [pid 604] <... close resumed>) = 0 [pid 601] exit_group(0 [pid 604] memfd_create("syzkaller", 0) = 3 [pid 601] <... exit_group resumed>) = ? [pid 600] <... close resumed>) = 0 [pid 604] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 604] 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 603] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 602] <... write resumed>) = 262144 [pid 601] +++ exited with 0 +++ [pid 600] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=601, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 602] munmap(0x7f7bfe3d8000, 262144 [pid 600] <... openat resumed>) = 3 ./strace-static-x86_64: Process 605 attached [pid 604] <... write resumed>) = 262144 [pid 603] <... openat resumed>) = 3 [pid 602] <... munmap resumed>) = 0 [pid 600] ioctl(3, BLKSECDISCARD, [0, 0] [pid 603] write(3, "1000", 4 [pid 602] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 600] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 605] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 603] <... write resumed>) = 4 [pid 602] <... openat resumed>) = 4 [pid 600] exit_group(0 [pid 310] <... openat resumed>) = 3 [pid 605] <... prctl resumed>) = 0 [pid 603] close(3 [pid 602] ioctl(4, LOOP_SET_FD, 3 [pid 600] <... exit_group resumed>) = ? [pid 310] ioctl(3, LOOP_CLR_FD [pid 605] setpgid(0, 0 [pid 603] <... close resumed>) = 0 [pid 602] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] <... ioctl resumed>) = 0 [pid 310] close(3) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 602] ioctl(4, LOOP_CLR_FD [pid 600] +++ exited with 0 +++ [pid 603] memfd_create("syzkaller", 0 [pid 605] <... setpgid resumed>) = 0 [pid 604] munmap(0x7f7bfe3d8000, 262144 [pid 603] <... memfd_create resumed>) = 3 [pid 602] <... ioctl resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 606 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=600, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 605] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 604] <... munmap resumed>) = 0 [pid 603] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 604] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 603] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 604] <... openat resumed>) = 4 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 604] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 307] <... openat resumed>) = 3 [pid 604] ioctl(4, LOOP_CLR_FD [pid 307] ioctl(3, LOOP_CLR_FD [pid 604] <... ioctl resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 307] close(3./strace-static-x86_64: Process 606 attached ) = 0 [pid 606] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 606] <... prctl resumed>) = 0 [pid 606] setpgid(0, 0) = 0 [pid 606] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 ./strace-static-x86_64: Process 607 attached [pid 605] <... openat resumed>) = 3 [pid 603] 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 604] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 605] write(3, "1000", 4 [pid 604] close(4) = 0 [pid 604] close(3 [pid 605] <... write resumed>) = 4 [pid 604] <... close resumed>) = 0 [pid 603] <... write resumed>) = 262144 [pid 602] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 607 [pid 604] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 605] close(3 [pid 604] <... openat resumed>) = 3 [pid 603] munmap(0x7f7bfe3d8000, 262144 [pid 602] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 604] ioctl(3, BLKSECDISCARD, [0, 0] [pid 605] <... close resumed>) = 0 [pid 604] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 602] close(4 [pid 603] <... munmap resumed>) = 0 [pid 604] exit_group(0) = ? [pid 605] memfd_create("syzkaller", 0 [pid 604] +++ exited with 0 +++ [pid 603] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 602] <... close resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=604, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 606] write(3, "1000", 4 [pid 305] <... restart_syscall resumed>) = 0 [pid 606] <... write resumed>) = 4 [pid 605] <... memfd_create resumed>) = 3 [pid 603] <... openat resumed>) = 4 [pid 602] close(3 [pid 606] close(3) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 606] memfd_create("syzkaller", 0 [pid 305] <... openat resumed>) = 3 [pid 606] <... memfd_create resumed>) = 3 [pid 605] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 603] ioctl(4, LOOP_SET_FD, 3 [pid 602] <... close resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 606] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 605] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 603] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 602] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] <... ioctl resumed>) = 0 [pid 606] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 305] close(3 [pid 605] 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 603] ioctl(4, LOOP_CLR_FD [pid 602] <... openat resumed>) = 3 [pid 305] <... close resumed>) = 0 [pid 603] <... ioctl resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 606] 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 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 608 [pid 605] <... write resumed>) = 262144 [pid 602] ioctl(3, BLKSECDISCARD, [0, 0] [pid 605] munmap(0x7f7bfe3d8000, 262144 [pid 602] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 605] <... munmap resumed>) = 0 [pid 602] exit_group(0 [pid 605] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 602] <... exit_group resumed>) = ? [pid 607] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 602] +++ exited with 0 +++ [pid 607] <... prctl resumed>) = 0 [pid 605] <... openat resumed>) = 4 [pid 603] ioctl(4, LOOP_SET_FD, 3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=602, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 607] setpgid(0, 0 [pid 605] ioctl(4, LOOP_SET_FD, 3 [pid 603] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 607] <... setpgid resumed>) = 0 [pid 606] <... write resumed>) = 262144 [pid 605] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 603] close(4 [pid 607] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 606] munmap(0x7f7bfe3d8000, 262144 [pid 603] <... close resumed>) = 0 [pid 308] <... restart_syscall resumed>) = 0 [pid 605] ioctl(4, LOOP_CLR_FD [pid 607] <... openat resumed>) = 3 [pid 606] <... munmap resumed>) = 0 [pid 603] close(3 [pid 607] write(3, "1000", 4 [pid 606] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 607] <... write resumed>) = 4 [pid 606] <... openat resumed>) = 4 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 607] close(3 [pid 606] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... openat resumed>) = 3 [pid 607] <... close resumed>) = 0 [pid 606] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] ioctl(3, LOOP_CLR_FD [pid 607] memfd_create("syzkaller", 0 [pid 606] ioctl(4, LOOP_CLR_FD [pid 308] <... ioctl resumed>) = 0 [pid 607] <... memfd_create resumed>) = 3 [pid 606] <... ioctl resumed>) = 0 [pid 603] <... close resumed>) = 0 [pid 308] close(3 [pid 607] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 308] <... close resumed>) = 0 [pid 607] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 605] <... ioctl resumed>) = 0 [pid 603] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 607] 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 603] <... openat resumed>) = 3 [pid 607] <... write resumed>) = 262144 [pid 606] ioctl(4, LOOP_SET_FD, 3 [pid 603] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 609 [pid 606] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 606] close(4) = 0 [pid 605] ioctl(4, LOOP_SET_FD, 3 [pid 603] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 606] close(3) = 0 [pid 605] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 603] exit_group(0 [pid 606] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 607] munmap(0x7f7bfe3d8000, 262144 [pid 606] <... openat resumed>) = 3 [pid 605] close(4 [pid 603] <... exit_group resumed>) = ? [pid 607] <... munmap resumed>) = 0 [pid 606] ioctl(3, BLKSECDISCARD, [0, 0] [pid 605] <... close resumed>) = 0 ./strace-static-x86_64: Process 608 attached [pid 607] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 606] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 608] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 607] <... openat resumed>) = 4 [pid 606] exit_group(0 [pid 605] close(3 [pid 603] +++ exited with 0 +++ [pid 608] <... prctl resumed>) = 0 [pid 607] ioctl(4, LOOP_SET_FD, 3 [pid 606] <... exit_group resumed>) = ? [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=603, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 608] setpgid(0, 0 [pid 607] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 606] +++ exited with 0 +++ [pid 605] <... close resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 608] <... setpgid resumed>) = 0 [pid 607] ioctl(4, LOOP_CLR_FD [pid 605] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=606, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... restart_syscall resumed>) = 0 [pid 608] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 607] <... ioctl resumed>) = 0 [pid 605] <... openat resumed>) = 3 [pid 608] <... openat resumed>) = 3 [pid 605] ioctl(3, BLKSECDISCARD, [0, 0] [pid 608] write(3, "1000", 4 [pid 605] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 608] <... write resumed>) = 4 [pid 605] exit_group(0 [pid 310] <... openat resumed>) = 3 [pid 306] <... openat resumed>) = 3 [pid 608] close(3 [pid 605] <... exit_group resumed>) = ? [pid 310] ioctl(3, LOOP_CLR_FD [pid 306] ioctl(3, LOOP_CLR_FD [pid 608] <... close resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 608] memfd_create("syzkaller", 0 [pid 310] close(3 [pid 306] close(3 [pid 608] <... memfd_create resumed>) = 3 [pid 310] <... close resumed>) = 0 [pid 605] +++ exited with 0 +++ [pid 306] <... close resumed>) = 0 [pid 608] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 607] ioctl(4, LOOP_SET_FD, 3 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=605, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 609 attached [pid 608] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 607] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 609] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 608] 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 607] close(4 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 610 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 611 [pid 609] <... prctl resumed>) = 0 [pid 608] <... write resumed>) = 262144 [pid 607] <... close resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 607] close(3 [pid 609] setpgid(0, 0 [pid 309] <... openat resumed>) = 3 [pid 608] munmap(0x7f7bfe3d8000, 262144 [pid 607] <... close resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 611 attached [pid 609] <... setpgid resumed>) = 0 [pid 608] <... munmap resumed>) = 0 [pid 607] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] <... ioctl resumed>) = 0 [pid 608] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 607] <... openat resumed>) = 3 [pid 309] close(3 [pid 608] <... openat resumed>) = 4 [pid 607] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] <... close resumed>) = 0 [pid 608] ioctl(4, LOOP_SET_FD, 3 [pid 607] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 611] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 609] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 608] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 607] exit_group(0 [pid 608] ioctl(4, LOOP_CLR_FD [pid 607] <... exit_group resumed>) = ? [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 612 [pid 611] <... prctl resumed>) = 0 [pid 609] <... openat resumed>) = 3 [pid 608] <... ioctl resumed>) = 0 [pid 607] +++ exited with 0 +++ [pid 611] setpgid(0, 0 [pid 609] write(3, "1000", 4./strace-static-x86_64: Process 610 attached [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=607, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 609] <... write resumed>) = 4 [pid 610] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 610] setpgid(0, 0) = 0 [pid 611] <... setpgid resumed>) = 0 [pid 609] close(3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 608] ioctl(4, LOOP_SET_FD, 3 [pid 609] <... close resumed>) = 0 [pid 608] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] <... openat resumed>) = 3 [pid 609] memfd_create("syzkaller", 0 [pid 608] close(4 [pid 307] ioctl(3, LOOP_CLR_FD [pid 608] <... close resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 609] <... memfd_create resumed>) = 3 [pid 608] close(3 [pid 307] close(3 [pid 611] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 609] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 608] <... close resumed>) = 0 [pid 608] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 307] <... close resumed>) = 0 [pid 609] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 608] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 608] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 608] exit_group(0) = ? [pid 608] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=608, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 610] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 609] 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 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 613 [pid 305] <... openat resumed>) = 3 [pid 610] <... openat resumed>) = 3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 610] write(3, "1000", 4 [pid 305] <... ioctl resumed>) = 0 [pid 610] <... write resumed>) = 4 [pid 305] close(3 [pid 610] close(3 [pid 305] <... close resumed>) = 0 [pid 610] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 610] memfd_create("syzkaller", 0 [pid 609] <... write resumed>) = 262144 [pid 611] <... openat resumed>) = 3 [pid 610] <... memfd_create resumed>) = 3 [pid 609] munmap(0x7f7bfe3d8000, 262144 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 614 [pid 610] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 609] <... munmap resumed>) = 0 [pid 611] write(3, "1000", 4 [pid 609] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 611] <... write resumed>) = 4 [pid 609] <... openat resumed>) = 4 ./strace-static-x86_64: Process 612 attached [pid 611] close(3 [pid 610] 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 609] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 613 attached [pid 613] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 613] setpgid(0, 0) = 0 [pid 613] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 613] write(3, "1000", 4) = 4 [pid 613] close(3) = 0 [pid 613] memfd_create("syzkaller", 0) = 3 [pid 613] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 610] <... write resumed>) = 262144 [pid 613] 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 610] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 610] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 610] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 610] ioctl(4, LOOP_CLR_FD) = 0 [pid 612] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 611] <... close resumed>) = 0 [pid 609] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 614 attached [pid 612] <... prctl resumed>) = 0 [pid 611] memfd_create("syzkaller", 0 [pid 609] ioctl(4, LOOP_CLR_FD [pid 614] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 610] ioctl(4, LOOP_SET_FD, 3 [pid 609] <... ioctl resumed>) = 0 [pid 611] <... memfd_create resumed>) = 3 [pid 614] <... prctl resumed>) = 0 [pid 612] setpgid(0, 0 [pid 611] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 610] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 614] setpgid(0, 0 [pid 612] <... setpgid resumed>) = 0 [pid 611] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 610] close(4 [pid 614] <... setpgid resumed>) = 0 [pid 610] <... close resumed>) = 0 [pid 614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 610] close(3 [pid 614] <... openat resumed>) = 3 [pid 611] 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 610] <... close resumed>) = 0 [pid 614] write(3, "1000", 4 [pid 613] <... write resumed>) = 262144 [pid 612] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 610] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 609] ioctl(4, LOOP_SET_FD, 3 [pid 614] <... write resumed>) = 4 [pid 613] munmap(0x7f7bfe3d8000, 262144 [pid 610] <... openat resumed>) = 3 [pid 609] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 614] close(3 [pid 613] <... munmap resumed>) = 0 [pid 610] ioctl(3, BLKSECDISCARD, [0, 0] [pid 609] close(4 [pid 614] <... close resumed>) = 0 [pid 613] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 610] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 609] <... close resumed>) = 0 [pid 614] memfd_create("syzkaller", 0 [pid 613] <... openat resumed>) = 4 [pid 609] close(3 [pid 614] <... memfd_create resumed>) = 3 [pid 613] ioctl(4, LOOP_SET_FD, 3 [pid 610] exit_group(0 [pid 614] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 613] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 610] <... exit_group resumed>) = ? [pid 614] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 613] ioctl(4, LOOP_CLR_FD [pid 611] <... write resumed>) = 262144 [pid 610] +++ exited with 0 +++ [pid 612] <... openat resumed>) = 3 [pid 609] <... close resumed>) = 0 [pid 614] 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 613] <... ioctl resumed>) = 0 [pid 612] write(3, "1000", 4 [pid 611] munmap(0x7f7bfe3d8000, 262144 [pid 609] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=610, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 614] <... write resumed>) = 262144 [pid 612] <... write resumed>) = 4 [pid 611] <... munmap resumed>) = 0 [pid 609] <... openat resumed>) = 3 [pid 614] munmap(0x7f7bfe3d8000, 262144 [pid 611] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 609] ioctl(3, BLKSECDISCARD, [0, 0] [pid 614] <... munmap resumed>) = 0 [pid 612] close(3 [pid 611] <... openat resumed>) = 4 [pid 609] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 614] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 611] ioctl(4, LOOP_SET_FD, 3 [pid 609] exit_group(0 [pid 614] ioctl(4, LOOP_SET_FD, 3 [pid 612] <... close resumed>) = 0 [pid 611] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 609] <... exit_group resumed>) = ? [pid 614] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 613] ioctl(4, LOOP_SET_FD, 3 [pid 614] ioctl(4, LOOP_CLR_FD [pid 613] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 614] <... ioctl resumed>) = 0 [pid 613] close(4 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 613] <... close resumed>) = 0 [pid 611] ioctl(4, LOOP_CLR_FD [pid 609] +++ exited with 0 +++ [pid 310] <... openat resumed>) = 3 [pid 613] close(3 [pid 612] memfd_create("syzkaller", 0 [pid 611] <... ioctl resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=609, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 613] <... close resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 614] ioctl(4, LOOP_SET_FD, 3 [pid 613] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 612] <... memfd_create resumed>) = 3 [pid 310] close(3 [pid 614] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 613] <... openat resumed>) = 3 [pid 612] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 310] <... close resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 614] close(4 [pid 613] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] <... openat resumed>) = 3 [pid 614] <... close resumed>) = 0 [pid 613] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 612] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 308] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 615 attached [pid 614] close(3 [pid 613] exit_group(0 [pid 612] 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 611] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 615 [pid 611] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 611] close(4 [pid 614] <... close resumed>) = 0 [pid 613] <... exit_group resumed>) = ? [pid 611] <... close resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 612] <... write resumed>) = 262144 [pid 611] close(3 [pid 614] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 613] +++ exited with 0 +++ [pid 308] close(3 [pid 611] <... close resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=613, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 614] <... openat resumed>) = 3 [pid 611] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 612] munmap(0x7f7bfe3d8000, 262144 [pid 308] <... close resumed>) = 0 [pid 614] ioctl(3, BLKSECDISCARD, [0, 0] [pid 611] <... openat resumed>) = 3 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 614] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 612] <... munmap resumed>) = 0 [pid 611] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 612] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 611] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 614] exit_group(0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 616 [pid 307] <... openat resumed>) = 3 [pid 614] <... exit_group resumed>) = ? [pid 612] <... openat resumed>) = 4 [pid 611] exit_group(0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 614] +++ exited with 0 +++ [pid 612] ioctl(4, LOOP_SET_FD, 3 [pid 611] <... exit_group resumed>) = ? [pid 307] <... ioctl resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=614, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 615] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 615] setpgid(0, 0) = 0 [pid 615] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 611] +++ exited with 0 +++ [pid 612] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] close(3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=611, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 612] ioctl(4, LOOP_CLR_FD [pid 307] <... close resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 612] <... ioctl resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 615] <... openat resumed>) = 3 [pid 306] <... restart_syscall resumed>) = 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 617 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 306] ioctl(3, LOOP_CLR_FD [pid 305] <... openat resumed>) = 3 [pid 306] <... ioctl resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 306] close(3 [pid 305] <... ioctl resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 305] close(3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 612] ioctl(4, LOOP_SET_FD, 3 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 618 [pid 612] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 619 [pid 612] close(4) = 0 [pid 612] close(3 [pid 615] write(3, "1000", 4) = 4 [pid 615] close(3) = 0 [pid 615] memfd_create("syzkaller", 0) = 3 [pid 615] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 612] <... close resumed>) = 0 [pid 612] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 612] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 612] exit_group(0) = ? [pid 615] 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 612] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=612, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 616 attached ) = 0 [pid 616] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 616] <... prctl resumed>) = 0 [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 618 attached [pid 616] setpgid(0, 0./strace-static-x86_64: Process 619 attached [pid 618] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 616] <... setpgid resumed>) = 0 [pid 615] <... write resumed>) = 262144 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 620 [pid 618] <... prctl resumed>) = 0 [pid 616] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 619] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 615] munmap(0x7f7bfe3d8000, 262144./strace-static-x86_64: Process 617 attached [pid 619] <... prctl resumed>) = 0 [pid 618] setpgid(0, 0 [pid 616] <... openat resumed>) = 3 [pid 615] <... munmap resumed>) = 0 [pid 617] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 615] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 617] <... prctl resumed>) = 0 [pid 615] <... openat resumed>) = 4 [pid 617] setpgid(0, 0 [pid 615] ioctl(4, LOOP_SET_FD, 3 [pid 617] <... setpgid resumed>) = 0 [pid 615] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 619] setpgid(0, 0 [pid 618] <... setpgid resumed>) = 0 [pid 617] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 616] write(3, "1000", 4 [pid 615] ioctl(4, LOOP_CLR_FD [pid 619] <... setpgid resumed>) = 0 [pid 618] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 617] <... openat resumed>) = 3 [pid 616] <... write resumed>) = 4 [pid 615] <... ioctl resumed>) = 0 [pid 617] write(3, "1000", 4 [pid 616] close(3 [pid 618] <... openat resumed>) = 3 [pid 617] <... write resumed>) = 4 [pid 616] <... close resumed>) = 0 [pid 619] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 617] close(3) = 0 [pid 617] memfd_create("syzkaller", 0 [pid 616] memfd_create("syzkaller", 0 [pid 618] write(3, "1000", 4 [pid 617] <... memfd_create resumed>) = 3 [pid 616] <... memfd_create resumed>) = 3 [pid 618] <... write resumed>) = 4 [pid 617] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 615] ioctl(4, LOOP_SET_FD, 3 [pid 618] close(3 [pid 617] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 616] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 615] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 619] <... openat resumed>) = 3 ./strace-static-x86_64: Process 620 attached [pid 619] write(3, "1000", 4 [pid 618] <... close resumed>) = 0 [pid 617] 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 616] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 615] close(4 [pid 619] <... write resumed>) = 4 [pid 617] <... write resumed>) = 262144 [pid 615] <... close resumed>) = 0 [pid 615] close(3 [pid 619] close(3 [pid 618] memfd_create("syzkaller", 0 [pid 616] 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 615] <... close resumed>) = 0 [pid 619] <... close resumed>) = 0 [pid 617] munmap(0x7f7bfe3d8000, 262144 [pid 615] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 617] <... munmap resumed>) = 0 [pid 615] <... openat resumed>) = 3 [pid 618] <... memfd_create resumed>) = 3 [pid 617] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 615] ioctl(3, BLKSECDISCARD, [0, 0] [pid 619] memfd_create("syzkaller", 0 [pid 618] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 617] <... openat resumed>) = 4 [pid 615] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 618] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 617] ioctl(4, LOOP_SET_FD, 3 [pid 615] exit_group(0 [pid 619] <... memfd_create resumed>) = 3 [pid 617] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 615] <... exit_group resumed>) = ? [pid 617] ioctl(4, LOOP_CLR_FD [pid 615] +++ exited with 0 +++ [pid 619] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 617] <... ioctl resumed>) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=615, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 616] <... write resumed>) = 262144 [pid 619] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 618] 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 616] munmap(0x7f7bfe3d8000, 262144 [pid 617] ioctl(4, LOOP_SET_FD, 3 [pid 619] 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 617] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 617] close(4 [pid 616] <... munmap resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 617] <... close resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 616] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 617] close(3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 618] <... write resumed>) = 262144 [pid 617] <... close resumed>) = 0 [pid 616] <... openat resumed>) = 4 [pid 310] <... ioctl resumed>) = 0 [pid 619] <... write resumed>) = 262144 [pid 617] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 616] ioctl(4, LOOP_SET_FD, 3 [pid 310] close(3 [pid 620] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 618] munmap(0x7f7bfe3d8000, 262144 [pid 617] <... openat resumed>) = 3 [pid 616] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 619] munmap(0x7f7bfe3d8000, 262144 [pid 310] <... close resumed>) = 0 [pid 620] <... prctl resumed>) = 0 [pid 619] <... munmap resumed>) = 0 [pid 618] <... munmap resumed>) = 0 [pid 617] ioctl(3, BLKSECDISCARD, [0, 0] [pid 616] ioctl(4, LOOP_CLR_FD [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 620] setpgid(0, 0 [pid 619] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 618] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 617] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 616] <... ioctl resumed>) = 0 [pid 620] <... setpgid resumed>) = 0 [pid 618] <... openat resumed>) = 4 [pid 617] exit_group(0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 621 [pid 617] <... exit_group resumed>) = ? [pid 620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 619] <... openat resumed>) = 4 [pid 618] ioctl(4, LOOP_SET_FD, 3 [pid 617] +++ exited with 0 +++ [pid 620] <... openat resumed>) = 3 [pid 618] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 619] ioctl(4, LOOP_SET_FD, 3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=617, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 621 attached [pid 621] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 620] write(3, "1000", 4 [pid 619] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 618] ioctl(4, LOOP_CLR_FD [pid 616] ioctl(4, LOOP_SET_FD, 3 [pid 620] <... write resumed>) = 4 [pid 618] <... ioctl resumed>) = 0 [pid 616] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 619] ioctl(4, LOOP_CLR_FD [pid 620] close(3 [pid 619] <... ioctl resumed>) = 0 [pid 616] close(4 [pid 307] <... restart_syscall resumed>) = 0 [pid 616] <... close resumed>) = 0 [pid 620] <... close resumed>) = 0 [pid 616] close(3 [pid 620] memfd_create("syzkaller", 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 621] setpgid(0, 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 621] <... setpgid resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 621] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 307] close(3 [pid 621] <... openat resumed>) = 3 [pid 307] <... close resumed>) = 0 [pid 621] write(3, "1000", 4 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 621] <... write resumed>) = 4 [pid 621] close(3) = 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 622 [pid 616] <... close resumed>) = 0 [pid 616] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 618] ioctl(4, LOOP_SET_FD, 3 [pid 620] <... memfd_create resumed>) = 3 [pid 618] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 616] <... openat resumed>) = 3 [pid 621] memfd_create("syzkaller", 0 [pid 620] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 618] close(4 [pid 616] ioctl(3, BLKSECDISCARD, [0, 0] [pid 620] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 618] <... close resumed>) = 0 [pid 616] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 616] exit_group(0 [pid 618] close(3 [pid 616] <... exit_group resumed>) = ? [pid 621] <... memfd_create resumed>) = 3 [pid 621] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 616] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=616, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 619] ioctl(4, LOOP_SET_FD, 3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 619] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 619] close(4 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 619] <... close resumed>) = 0 [pid 618] <... close resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 623 [pid 619] close(3 [pid 618] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 621] 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 620] 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 618] <... openat resumed>) = 3 [pid 619] <... close resumed>) = 0 [pid 619] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 618] ioctl(3, BLKSECDISCARD, [0, 0] [pid 620] <... write resumed>) = 262144 ./strace-static-x86_64: Process 622 attached [pid 619] <... openat resumed>) = 3 [pid 618] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 622] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 619] ioctl(3, BLKSECDISCARD, [0, 0] [pid 618] exit_group(0 [pid 622] setpgid(0, 0 [pid 618] <... exit_group resumed>) = ? [pid 619] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 622] <... setpgid resumed>) = 0 [pid 622] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 618] +++ exited with 0 +++ [pid 622] <... openat resumed>) = 3 [pid 620] munmap(0x7f7bfe3d8000, 262144 [pid 619] exit_group(0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=618, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 622] write(3, "1000", 4 [pid 619] <... exit_group resumed>) = ? [pid 622] <... write resumed>) = 4 [pid 621] <... write resumed>) = 262144 [pid 620] <... munmap resumed>) = 0 [pid 622] close(3 [pid 621] munmap(0x7f7bfe3d8000, 262144 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 622] <... close resumed>) = 0 [pid 621] <... munmap resumed>) = 0 [pid 619] +++ exited with 0 +++ [pid 306] <... openat resumed>) = 3 [pid 622] memfd_create("syzkaller", 0 [pid 621] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 620] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 306] ioctl(3, LOOP_CLR_FD [pid 622] <... memfd_create resumed>) = 3 [pid 621] <... openat resumed>) = 4 [pid 306] <... ioctl resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=619, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 622] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 621] ioctl(4, LOOP_SET_FD, 3 [pid 306] close(3 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 622] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 621] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... close resumed>) = 0 [pid 622] 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 621] ioctl(4, LOOP_CLR_FD [pid 620] <... openat resumed>) = 4 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 623 attached [pid 622] <... write resumed>) = 262144 [pid 621] <... ioctl resumed>) = 0 [pid 620] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 624 [pid 620] ioctl(4, LOOP_CLR_FD [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 623] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 620] <... ioctl resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 622] munmap(0x7f7bfe3d8000, 262144 [pid 305] <... ioctl resumed>) = 0 [pid 623] <... prctl resumed>) = 0 [pid 622] <... munmap resumed>) = 0 [pid 305] close(3 [pid 622] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 621] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... close resumed>) = 0 [pid 622] <... openat resumed>) = 4 [pid 621] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 623] setpgid(0, 0 [pid 622] ioctl(4, LOOP_SET_FD, 3 [pid 621] close(4 [pid 623] <... setpgid resumed>) = 0 [pid 622] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 621] <... close resumed>) = 0 [pid 620] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 625 [pid 622] ioctl(4, LOOP_CLR_FD [pid 621] close(3 [pid 620] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 623] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 622] <... ioctl resumed>) = 0 [pid 621] <... close resumed>) = 0 [pid 620] close(4 [pid 621] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 620] <... close resumed>) = 0 [pid 623] <... openat resumed>) = 3 [pid 621] <... openat resumed>) = 3 [pid 620] close(3 [pid 623] write(3, "1000", 4 [pid 621] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 621] exit_group(0) = ? [pid 623] <... write resumed>) = 4 [pid 621] +++ exited with 0 +++ [pid 620] <... close resumed>) = 0 [pid 623] close(3 [pid 622] ioctl(4, LOOP_SET_FD, 3 [pid 620] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=621, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 623] <... close resumed>) = 0 [pid 622] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 620] <... openat resumed>) = 3 [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 622] close(4 [pid 620] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] <... restart_syscall resumed>) = 0 [pid 623] memfd_create("syzkaller", 0 [pid 622] <... close resumed>) = 0 [pid 620] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 623] <... memfd_create resumed>) = 3 [pid 622] close(3 [pid 620] exit_group(0 [pid 623] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 622] <... close resumed>) = 0 [pid 620] <... exit_group resumed>) = ? [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 622] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] <... openat resumed>) = 3 [pid 622] <... openat resumed>) = 3 [pid 620] +++ exited with 0 +++ [pid 310] ioctl(3, LOOP_CLR_FD [pid 623] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 622] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] <... ioctl resumed>) = 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=620, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 622] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] close(3./strace-static-x86_64: Process 624 attached [pid 622] exit_group(0 [pid 310] <... close resumed>) = 0 [pid 624] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 622] <... exit_group resumed>) = ? [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 624] <... prctl resumed>) = 0 [pid 623] 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 622] +++ exited with 0 +++ [pid 624] setpgid(0, 0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 626 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=622, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 624] <... setpgid resumed>) = 0 [pid 624] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 624] <... openat resumed>) = 3 [pid 309] <... openat resumed>) = 3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 624] write(3, "1000", 4 [pid 309] ioctl(3, LOOP_CLR_FD [pid 624] <... write resumed>) = 4 [pid 309] <... ioctl resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 624] close(3 [pid 309] close(3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 624] <... close resumed>) = 0 [pid 623] <... write resumed>) = 262144 [pid 309] <... close resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 624] memfd_create("syzkaller", 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] close(3 [pid 624] <... memfd_create resumed>) = 3 [pid 623] munmap(0x7f7bfe3d8000, 262144 [pid 307] <... close resumed>) = 0 [pid 624] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 627 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 624] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 623] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 625 attached [pid 624] 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 623] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 625] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 623] <... openat resumed>) = 4 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 628 [pid 623] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 625] <... prctl resumed>) = 0 [pid 624] <... write resumed>) = 262144 [pid 623] ioctl(4, LOOP_CLR_FD [pid 624] munmap(0x7f7bfe3d8000, 262144 [pid 625] setpgid(0, 0 [pid 624] <... munmap resumed>) = 0 [pid 623] <... ioctl resumed>) = 0 [pid 625] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 627 attached [pid 625] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 624] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 625] <... openat resumed>) = 3 [pid 624] <... openat resumed>) = 4 [pid 624] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 624] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 628 attached [pid 628] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 623] ioctl(4, LOOP_SET_FD, 3 [pid 628] <... prctl resumed>) = 0 [pid 623] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 623] close(4 [pid 627] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 625] write(3, "1000", 4 [pid 623] <... close resumed>) = 0 [pid 628] setpgid(0, 0 [pid 625] <... write resumed>) = 4 [pid 623] close(3 [pid 627] <... prctl resumed>) = 0 [pid 628] <... setpgid resumed>) = 0 [pid 624] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 626 attached [pid 628] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 624] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 628] <... openat resumed>) = 3 [pid 626] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 624] close(4 [pid 628] write(3, "1000", 4 [pid 626] <... prctl resumed>) = 0 [pid 624] <... close resumed>) = 0 [pid 625] close(3 [pid 623] <... close resumed>) = 0 [pid 628] <... write resumed>) = 4 [pid 626] setpgid(0, 0 [pid 625] <... close resumed>) = 0 [pid 624] close(3 [pid 623] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 628] close(3 [pid 627] setpgid(0, 0 [pid 626] <... setpgid resumed>) = 0 [pid 625] memfd_create("syzkaller", 0 [pid 624] <... close resumed>) = 0 [pid 623] <... openat resumed>) = 3 [pid 628] <... close resumed>) = 0 [pid 626] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 625] <... memfd_create resumed>) = 3 [pid 624] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 623] ioctl(3, BLKSECDISCARD, [0, 0] [pid 628] memfd_create("syzkaller", 0 [pid 627] <... setpgid resumed>) = 0 [pid 626] <... openat resumed>) = 3 [pid 625] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 624] <... openat resumed>) = 3 [pid 623] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 628] <... memfd_create resumed>) = 3 [pid 626] write(3, "1000", 4 [pid 625] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 624] ioctl(3, BLKSECDISCARD, [0, 0] [pid 623] exit_group(0 [pid 628] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 627] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 626] <... write resumed>) = 4 [pid 624] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 623] <... exit_group resumed>) = ? [pid 628] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 626] close(3 [pid 624] exit_group(0 [pid 628] 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 626] <... close resumed>) = 0 [pid 624] <... exit_group resumed>) = ? [pid 623] +++ exited with 0 +++ [pid 625] 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 628] <... write resumed>) = 262144 [pid 627] <... openat resumed>) = 3 [pid 626] memfd_create("syzkaller", 0 [pid 624] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=623, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 626] <... memfd_create resumed>) = 3 [pid 628] munmap(0x7f7bfe3d8000, 262144 [pid 626] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=624, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 628] <... munmap resumed>) = 0 [pid 626] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 628] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 627] write(3, "1000", 4 [pid 626] 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 625] <... write resumed>) = 262144 [pid 308] <... openat resumed>) = 3 [pid 306] <... openat resumed>) = 3 [pid 628] <... openat resumed>) = 4 [pid 627] <... write resumed>) = 4 [pid 626] <... write resumed>) = 262144 [pid 625] munmap(0x7f7bfe3d8000, 262144 [pid 308] ioctl(3, LOOP_CLR_FD [pid 306] ioctl(3, LOOP_CLR_FD [pid 628] ioctl(4, LOOP_SET_FD, 3 [pid 627] close(3 [pid 626] munmap(0x7f7bfe3d8000, 262144 [pid 308] <... ioctl resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 628] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 627] <... close resumed>) = 0 [pid 626] <... munmap resumed>) = 0 [pid 625] <... munmap resumed>) = 0 [pid 308] close(3 [pid 306] close(3 [pid 628] ioctl(4, LOOP_CLR_FD [pid 627] memfd_create("syzkaller", 0 [pid 626] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 625] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 308] <... close resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 628] <... ioctl resumed>) = 0 [pid 626] <... openat resumed>) = 4 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 627] <... memfd_create resumed>) = 3 [pid 626] ioctl(4, LOOP_SET_FD, 3 [pid 625] <... openat resumed>) = 4 [pid 627] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 626] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 625] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 629 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 630 [pid 627] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 626] ioctl(4, LOOP_CLR_FD [pid 625] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 626] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 630 attached [pid 628] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 628] close(4) = 0 [pid 628] close(3) = 0 [pid 627] 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 625] ioctl(4, LOOP_CLR_FD [pid 628] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 626] ioctl(4, LOOP_SET_FD, 3 [pid 625] <... ioctl resumed>) = 0 [pid 628] <... openat resumed>) = 3 [pid 626] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 628] ioctl(3, BLKSECDISCARD, [0, 0] [pid 626] close(4 [pid 628] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 626] <... close resumed>) = 0 [pid 628] exit_group(0 [pid 626] close(3 [pid 628] <... exit_group resumed>) = ? [pid 627] <... write resumed>) = 262144 [pid 626] <... close resumed>) = 0 [pid 628] +++ exited with 0 +++ [pid 627] munmap(0x7f7bfe3d8000, 262144 [pid 626] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 627] <... munmap resumed>) = 0 [pid 626] ioctl(3, BLKSECDISCARD, [0, 0] [pid 627] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 626] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 625] ioctl(4, LOOP_SET_FD, 3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=628, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 626] exit_group(0 [pid 625] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 627] <... openat resumed>) = 4 [pid 626] <... exit_group resumed>) = ? [pid 625] close(4 [pid 307] <... openat resumed>) = 3 [pid 627] ioctl(4, LOOP_SET_FD, 3 [pid 626] +++ exited with 0 +++ [pid 625] <... close resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 627] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 625] close(3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=626, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] <... ioctl resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 629 attached [pid 627] ioctl(4, LOOP_CLR_FD [pid 625] <... close resumed>) = 0 [pid 307] close(3 [pid 627] <... ioctl resumed>) = 0 [pid 625] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 631 [pid 625] <... openat resumed>) = 3 [pid 307] <... close resumed>) = 0 [pid 625] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 625] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 630] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 625] exit_group(0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 632 [pid 625] <... exit_group resumed>) = ? [pid 630] setpgid(0, 0) = 0 [pid 630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 630] write(3, "1000", 4) = 4 [pid 630] close(3) = 0 [pid 630] memfd_create("syzkaller", 0 [pid 625] +++ exited with 0 +++ [pid 630] <... memfd_create resumed>) = 3 [pid 627] ioctl(4, LOOP_SET_FD, 3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=625, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 629] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 630] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 627] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 630] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 627] close(4 [pid 305] <... restart_syscall resumed>) = 0 [pid 629] <... prctl resumed>) = 0 [pid 627] <... close resumed>) = 0 [pid 627] close(3 [pid 305] openat(AT_FDCWD, "/dev/loop0", 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 [pid 627] <... close resumed>) = 0 [pid 630] 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 629] setpgid(0, 0 [pid 627] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 633 [pid 630] <... write resumed>) = 262144 [pid 629] <... setpgid resumed>) = 0 [pid 627] <... openat resumed>) = 3 ./strace-static-x86_64: Process 632 attached [pid 627] ioctl(3, BLKSECDISCARD, [0, 0] [pid 632] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 627] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 629] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 632] <... prctl resumed>) = 0 [pid 627] exit_group(0 [pid 632] setpgid(0, 0 [pid 627] <... exit_group resumed>) = ? [pid 632] <... setpgid resumed>) = 0 [pid 632] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 632] write(3, "1000", 4) = 4 [pid 632] close(3) = 0 [pid 632] memfd_create("syzkaller", 0 [pid 627] +++ exited with 0 +++ [pid 630] munmap(0x7f7bfe3d8000, 262144 [pid 632] <... memfd_create resumed>) = 3 [pid 630] <... munmap resumed>) = 0 [pid 629] <... openat resumed>) = 3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=627, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 632] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 630] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 629] write(3, "1000", 4 [pid 632] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 630] <... openat resumed>) = 4 [pid 629] <... write resumed>) = 4 ./strace-static-x86_64: Process 631 attached [pid 632] 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 630] ioctl(4, LOOP_SET_FD, 3 [pid 629] close(3 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 630] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] <... openat resumed>) = 3 [pid 630] ioctl(4, LOOP_CLR_FD [pid 309] ioctl(3, LOOP_CLR_FD [pid 631] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 630] <... ioctl resumed>) = 0 [pid 629] <... close resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 633 attached [pid 309] close(3 [pid 633] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 632] <... write resumed>) = 262144 [pid 631] <... prctl resumed>) = 0 [pid 629] memfd_create("syzkaller", 0 [pid 309] <... close resumed>) = 0 [pid 633] <... prctl resumed>) = 0 [pid 630] ioctl(4, LOOP_SET_FD, 3 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 633] setpgid(0, 0 [pid 631] setpgid(0, 0 [pid 630] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 629] <... memfd_create resumed>) = 3 [pid 633] <... setpgid resumed>) = 0 [pid 630] close(4 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 634 [pid 633] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 631] <... setpgid resumed>) = 0 [pid 630] <... close resumed>) = 0 [pid 629] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 633] <... openat resumed>) = 3 [pid 632] munmap(0x7f7bfe3d8000, 262144 [pid 631] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 630] close(3 [pid 629] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 633] write(3, "1000", 4 [pid 632] <... munmap resumed>) = 0 [pid 631] <... openat resumed>) = 3 [pid 630] <... close resumed>) = 0 [pid 633] <... write resumed>) = 4 [pid 632] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 630] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 633] close(3 [pid 632] <... openat resumed>) = 4 [pid 631] write(3, "1000", 4 [pid 630] <... openat resumed>) = 3 [pid 629] 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 633] <... close resumed>) = 0 [pid 632] ioctl(4, LOOP_SET_FD, 3 [pid 630] ioctl(3, BLKSECDISCARD, [0, 0] [pid 633] memfd_create("syzkaller", 0 [pid 632] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 630] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 633] <... memfd_create resumed>) = 3 [pid 632] ioctl(4, LOOP_CLR_FD [pid 630] exit_group(0 [pid 633] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 632] <... ioctl resumed>) = 0 [pid 630] <... exit_group resumed>) = ? [pid 633] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 631] <... write resumed>) = 4 [pid 630] +++ exited with 0 +++ [pid 629] <... write resumed>) = 262144 [pid 633] 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 631] close(3 [pid 629] munmap(0x7f7bfe3d8000, 262144 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=630, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 633] <... write resumed>) = 262144 [pid 631] <... close resumed>) = 0 [pid 629] <... munmap resumed>) = 0 [pid 633] munmap(0x7f7bfe3d8000, 262144 [pid 632] ioctl(4, LOOP_SET_FD, 3 [pid 633] <... munmap resumed>) = 0 [pid 632] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 633] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 632] close(4 [pid 629] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 306] <... openat resumed>) = 3 [pid 633] <... openat resumed>) = 4 [pid 632] <... close resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 633] ioctl(4, LOOP_SET_FD, 3 [pid 632] close(3 [pid 306] <... ioctl resumed>) = 0 [pid 633] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 632] <... close resumed>) = 0 [pid 631] memfd_create("syzkaller", 0 [pid 629] <... openat resumed>) = 4 [pid 306] close(3 [pid 633] ioctl(4, LOOP_CLR_FD [pid 632] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 629] ioctl(4, LOOP_SET_FD, 3 [pid 306] <... close resumed>) = 0 [pid 633] <... ioctl resumed>) = 0 [pid 632] <... openat resumed>) = 3 [pid 631] <... memfd_create resumed>) = 3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 632] ioctl(3, BLKSECDISCARD, [0, 0] [pid 629] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 632] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 631] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 629] ioctl(4, LOOP_CLR_FD [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 635 [pid 632] exit_group(0 [pid 631] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 629] <... ioctl resumed>) = 0 [pid 632] <... exit_group resumed>) = ? [pid 632] +++ exited with 0 +++ [pid 633] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 633] close(4) = 0 [pid 633] close(3 [pid 631] 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 633] <... close resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=632, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 633] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 629] ioctl(4, LOOP_SET_FD, 3 [pid 633] <... openat resumed>) = 3 [pid 629] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 633] ioctl(3, BLKSECDISCARD, [0, 0] [pid 629] close(4 [pid 633] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 631] <... write resumed>) = 262144 [pid 629] <... close resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 629] close(3 [pid 633] exit_group(0 [pid 307] <... openat resumed>) = 3 [pid 633] <... exit_group resumed>) = ? [pid 633] +++ exited with 0 +++ [pid 629] <... close resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 629] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 307] <... ioctl resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=633, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 629] <... openat resumed>) = 3 [pid 307] close(3 [pid 629] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] <... close resumed>) = 0 [pid 631] munmap(0x7f7bfe3d8000, 262144 [pid 629] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] openat(AT_FDCWD, "/dev/loop0", 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 [pid 629] exit_group(0) = ? [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 636 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 637 [pid 631] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 635 attached [pid 635] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 629] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=629, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 631] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 635] <... prctl resumed>) = 0 [pid 635] setpgid(0, 0 [pid 631] <... openat resumed>) = 4 [pid 635] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 636 attached [pid 635] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 631] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... restart_syscall resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 631] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 631] ioctl(4, LOOP_CLR_FD [pid 308] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 636] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 631] <... ioctl resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 636] <... prctl resumed>) = 0 [pid 635] <... openat resumed>) = 3 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 636] setpgid(0, 0 [pid 635] write(3, "1000", 4 [pid 636] <... setpgid resumed>) = 0 [pid 635] <... write resumed>) = 4 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 638 [pid 636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 635] close(3 [pid 636] <... openat resumed>) = 3 [pid 635] <... close resumed>) = 0 [pid 636] write(3, "1000", 4 [pid 635] memfd_create("syzkaller", 0 [pid 636] <... write resumed>) = 4 [pid 635] <... memfd_create resumed>) = 3 [pid 636] close(3 [pid 635] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 636] <... close resumed>) = 0 [pid 635] <... mmap resumed>) = 0x7f7bfe3d8000 ./strace-static-x86_64: Process 634 attached [pid 636] memfd_create("syzkaller", 0 [pid 635] 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 631] ioctl(4, LOOP_SET_FD, 3 [pid 636] <... memfd_create resumed>) = 3 [pid 631] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 637 attached [pid 636] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 634] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 631] close(4./strace-static-x86_64: Process 638 attached [pid 637] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 636] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 635] <... write resumed>) = 262144 [pid 634] <... prctl resumed>) = 0 [pid 631] <... close resumed>) = 0 [pid 638] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 637] <... prctl resumed>) = 0 [pid 636] 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 634] setpgid(0, 0 [pid 631] close(3 [pid 637] setpgid(0, 0 [pid 631] <... close resumed>) = 0 [pid 637] <... setpgid resumed>) = 0 [pid 631] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 634] <... setpgid resumed>) = 0 [pid 638] <... prctl resumed>) = 0 [pid 637] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 631] <... openat resumed>) = 3 [pid 638] setpgid(0, 0 [pid 637] <... openat resumed>) = 3 [pid 636] <... write resumed>) = 262144 [pid 635] munmap(0x7f7bfe3d8000, 262144 [pid 634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 631] ioctl(3, BLKSECDISCARD, [0, 0] [pid 637] write(3, "1000", 4 [pid 636] munmap(0x7f7bfe3d8000, 262144 [pid 635] <... munmap resumed>) = 0 [pid 634] <... openat resumed>) = 3 [pid 631] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 638] <... setpgid resumed>) = 0 [pid 637] <... write resumed>) = 4 [pid 636] <... munmap resumed>) = 0 [pid 635] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 634] write(3, "1000", 4 [pid 631] exit_group(0 [pid 637] close(3 [pid 636] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 635] <... openat resumed>) = 4 [pid 634] <... write resumed>) = 4 [pid 631] <... exit_group resumed>) = ? [pid 638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 637] <... close resumed>) = 0 [pid 636] <... openat resumed>) = 4 [pid 635] ioctl(4, LOOP_SET_FD, 3 [pid 637] memfd_create("syzkaller", 0 [pid 636] ioctl(4, LOOP_SET_FD, 3 [pid 635] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 637] <... memfd_create resumed>) = 3 [pid 636] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 635] ioctl(4, LOOP_CLR_FD [pid 634] close(3 [pid 631] +++ exited with 0 +++ [pid 638] <... openat resumed>) = 3 [pid 637] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 636] ioctl(4, LOOP_CLR_FD [pid 635] <... ioctl resumed>) = 0 [pid 634] <... close resumed>) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=631, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 638] write(3, "1000", 4 [pid 637] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 636] <... ioctl resumed>) = 0 [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 638] <... write resumed>) = 4 [pid 637] 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 634] memfd_create("syzkaller", 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 638] close(3 [pid 637] <... write resumed>) = 262144 [pid 634] <... memfd_create resumed>) = 3 [pid 638] <... close resumed>) = 0 [pid 637] munmap(0x7f7bfe3d8000, 262144 [pid 636] ioctl(4, LOOP_SET_FD, 3 [pid 635] ioctl(4, LOOP_SET_FD, 3 [pid 634] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 638] memfd_create("syzkaller", 0 [pid 637] <... munmap resumed>) = 0 [pid 636] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 635] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 634] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 637] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 636] close(4 [pid 635] close(4 [pid 310] <... openat resumed>) = 3 [pid 637] <... openat resumed>) = 4 [pid 636] <... close resumed>) = 0 [pid 635] <... close resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 637] ioctl(4, LOOP_SET_FD, 3 [pid 636] close(3 [pid 635] close(3 [pid 310] <... ioctl resumed>) = 0 [pid 638] <... memfd_create resumed>) = 3 [pid 637] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 636] <... close resumed>) = 0 [pid 635] <... close resumed>) = 0 [pid 634] 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 310] close(3 [pid 638] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 637] ioctl(4, LOOP_CLR_FD [pid 636] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 635] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] <... close resumed>) = 0 [pid 637] <... ioctl resumed>) = 0 [pid 636] <... openat resumed>) = 3 [pid 635] <... openat resumed>) = 3 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 638] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 636] ioctl(3, BLKSECDISCARD, [0, 0] [pid 635] ioctl(3, BLKSECDISCARD, [0, 0] [pid 634] <... write resumed>) = 262144 [pid 636] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 635] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 639 [pid 636] exit_group(0 [pid 635] exit_group(0 [pid 636] <... exit_group resumed>) = ? [pid 635] <... exit_group resumed>) = ? [pid 638] 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 636] +++ exited with 0 +++ [pid 635] +++ exited with 0 +++ [pid 634] munmap(0x7f7bfe3d8000, 262144 [pid 637] ioctl(4, LOOP_SET_FD, 3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=636, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=635, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 637] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 634] <... munmap resumed>) = 0 [pid 637] close(4) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 637] close(3 [pid 306] <... openat resumed>) = 3 [pid 638] <... write resumed>) = 262144 [pid 637] <... close resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 637] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 306] <... ioctl resumed>) = 0 [pid 638] munmap(0x7f7bfe3d8000, 262144 [pid 637] <... openat resumed>) = 3 [pid 634] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 306] close(3 [pid 638] <... munmap resumed>) = 0 [pid 637] ioctl(3, BLKSECDISCARD, [0, 0] [pid 634] <... openat resumed>) = 4 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] <... close resumed>) = 0 [pid 638] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 637] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 634] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... openat resumed>) = 3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 638] <... openat resumed>) = 4 [pid 637] exit_group(0 [pid 634] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] ioctl(3, LOOP_CLR_FD [pid 638] ioctl(4, LOOP_SET_FD, 3 [pid 637] <... exit_group resumed>) = ? [pid 634] ioctl(4, LOOP_CLR_FD [pid 307] <... ioctl resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 640 [pid 638] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 637] +++ exited with 0 +++ [pid 634] <... ioctl resumed>) = 0 [pid 307] close(3 [pid 638] ioctl(4, LOOP_CLR_FD [pid 307] <... close resumed>) = 0 [pid 638] <... ioctl resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=637, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 641 [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 634] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 642 [pid 638] ioctl(4, LOOP_SET_FD, 3 [pid 634] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 638] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 634] close(4 [pid 638] close(4 [pid 634] <... close resumed>) = 0 [pid 638] <... close resumed>) = 0 [pid 634] close(3 [pid 638] close(3./strace-static-x86_64: Process 639 attached [pid 639] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 639] setpgid(0, 0) = 0 [pid 639] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 634] <... close resumed>) = 0 [pid 639] write(3, "1000", 4) = 4 [pid 639] close(3) = 0 [pid 639] memfd_create("syzkaller", 0) = 3 [pid 639] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 638] <... close resumed>) = 0 [pid 634] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 638] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 634] <... openat resumed>) = 3 [pid 639] 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 638] <... openat resumed>) = 3 [pid 634] ioctl(3, BLKSECDISCARD, [0, 0] [pid 638] ioctl(3, BLKSECDISCARD, [0, 0] [pid 634] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 638] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 634] exit_group(0./strace-static-x86_64: Process 641 attached [pid 638] exit_group(0 [pid 634] <... exit_group resumed>) = ? [pid 638] <... exit_group resumed>) = ? [pid 641] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 641] setpgid(0, 0) = 0 [pid 641] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 641] write(3, "1000", 4 [pid 634] +++ exited with 0 +++ [pid 641] <... write resumed>) = 4 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=634, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 641] close(3 [pid 639] <... write resumed>) = 262144 [pid 638] +++ exited with 0 +++ ./strace-static-x86_64: Process 640 attached [pid 641] <... close resumed>) = 0 [pid 641] memfd_create("syzkaller", 0 [pid 640] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=638, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 641] <... memfd_create resumed>) = 3 [pid 640] <... prctl resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 641] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 640] setpgid(0, 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] <... openat resumed>) = 3 [pid 641] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 640] <... setpgid resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 642 attached [pid 641] 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 640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 639] munmap(0x7f7bfe3d8000, 262144 [pid 309] close(3 [pid 308] <... ioctl resumed>) = 0 [pid 640] <... openat resumed>) = 3 [pid 639] <... munmap resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 308] close(3 [pid 642] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 641] <... write resumed>) = 262144 [pid 640] write(3, "1000", 4 [pid 639] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] <... close resumed>) = 0 [pid 642] <... prctl resumed>) = 0 [pid 640] <... write resumed>) = 4 [pid 639] <... openat resumed>) = 4 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 642] setpgid(0, 0 [pid 640] close(3 [pid 639] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 643 [pid 640] <... close resumed>) = 0 [pid 639] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 644 [pid 642] <... setpgid resumed>) = 0 [pid 639] ioctl(4, LOOP_CLR_FD [pid 642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 640] memfd_create("syzkaller", 0 [pid 639] <... ioctl resumed>) = 0 [pid 641] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 640] <... memfd_create resumed>) = 3 [pid 642] <... openat resumed>) = 3 [pid 641] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 4 [pid 641] ioctl(4, LOOP_SET_FD, 3 [pid 642] write(3, "1000", 4 [pid 641] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 640] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 641] ioctl(4, LOOP_CLR_FD) = 0 [pid 640] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 639] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 639] close(4) = 0 [pid 639] close(3) = 0 [pid 639] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 642] <... write resumed>) = 4 [pid 641] ioctl(4, LOOP_SET_FD, 3 [pid 640] 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 639] <... openat resumed>) = 3 [pid 642] close(3 [pid 641] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 639] ioctl(3, BLKSECDISCARD, [0, 0] [pid 642] <... close resumed>) = 0 [pid 641] close(4 [pid 639] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 642] memfd_create("syzkaller", 0 [pid 641] <... close resumed>) = 0 [pid 639] exit_group(0 [pid 641] close(3 [pid 639] <... exit_group resumed>) = ? [pid 642] <... memfd_create resumed>) = 3 [pid 641] <... close resumed>) = 0 [pid 640] <... write resumed>) = 262144 [pid 639] +++ exited with 0 +++ [pid 642] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 641] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 640] munmap(0x7f7bfe3d8000, 262144 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=639, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 642] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 641] <... openat resumed>) = 3 [pid 641] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 641] exit_group(0 [pid 310] <... openat resumed>) = 3 [pid 641] <... exit_group resumed>) = ? [pid 310] ioctl(3, LOOP_CLR_FD [pid 642] 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 641] +++ exited with 0 +++ [pid 310] <... ioctl resumed>) = 0 [pid 310] close(3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=641, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] <... close resumed>) = 0 [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] <... restart_syscall resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 645 ./strace-static-x86_64: Process 645 attached [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 645] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 307] <... ioctl resumed>) = 0 [pid 645] <... prctl resumed>) = 0 [pid 307] close(3 [pid 640] <... munmap resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 640] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 645] setpgid(0, 0) = 0 [pid 640] <... openat resumed>) = 4 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 646 [pid 640] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 640] ioctl(4, LOOP_CLR_FD) = 0 [pid 645] <... openat resumed>) = 3 [pid 645] write(3, "1000", 4) = 4 [pid 645] close(3 [pid 642] <... write resumed>) = 262144 [pid 645] <... close resumed>) = 0 [pid 642] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 642] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 645] memfd_create("syzkaller", 0 [pid 642] <... openat resumed>) = 4 [pid 642] ioctl(4, LOOP_SET_FD, 3 [pid 640] ioctl(4, LOOP_SET_FD, 3 [pid 645] <... memfd_create resumed>) = 3 [pid 645] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 640] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 642] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 640] close(4 [pid 642] ioctl(4, LOOP_CLR_FD [pid 640] <... close resumed>) = 0 [pid 642] <... ioctl resumed>) = 0 [pid 640] close(3 [pid 645] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 640] <... close resumed>) = 0 [pid 640] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 640] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 640] exit_group(0) = ? [pid 640] +++ exited with 0 +++ ./strace-static-x86_64: Process 644 attached [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=640, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 642] ioctl(4, LOOP_SET_FD, 3 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 642] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... restart_syscall resumed>) = 0 [pid 642] close(4) = 0 [pid 642] close(3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 642] <... close resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 647 ./strace-static-x86_64: Process 643 attached [pid 642] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 644] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 642] ioctl(3, BLKSECDISCARD, [0, 0]./strace-static-x86_64: Process 646 attached [pid 646] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 646] setpgid(0, 0) = 0 [pid 646] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 644] <... prctl resumed>) = 0 [pid 643] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 642] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 644] setpgid(0, 0 [pid 643] <... prctl resumed>) = 0 [pid 642] exit_group(0 [pid 644] <... setpgid resumed>) = 0 [pid 643] setpgid(0, 0 [pid 642] <... exit_group resumed>) = ? [pid 645] 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 644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 643] <... setpgid resumed>) = 0 [pid 642] +++ exited with 0 +++ [pid 643] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 644] <... openat resumed>) = 3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=642, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 646] <... openat resumed>) = 3 [pid 644] write(3, "1000", 4 [pid 643] <... openat resumed>) = 3 [pid 646] write(3, "1000", 4 [pid 644] <... write resumed>) = 4 [pid 643] write(3, "1000", 4 [pid 646] <... write resumed>) = 4 [pid 644] close(3 [pid 643] <... write resumed>) = 4 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 646] close(3 [pid 645] <... write resumed>) = 262144 [pid 644] <... close resumed>) = 0 [pid 643] close(3 [pid 305] <... openat resumed>) = 3 [pid 646] <... close resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 646] memfd_create("syzkaller", 0 [pid 645] munmap(0x7f7bfe3d8000, 262144 [pid 305] <... ioctl resumed>) = 0 [pid 646] <... memfd_create resumed>) = 3 [pid 645] <... munmap resumed>) = 0 [pid 644] memfd_create("syzkaller", 0 [pid 643] <... close resumed>) = 0 [pid 305] close(3 [pid 646] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 645] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 644] <... memfd_create resumed>) = 3 [pid 643] memfd_create("syzkaller", 0 [pid 305] <... close resumed>) = 0 [pid 646] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 645] <... openat resumed>) = 4 [pid 643] <... memfd_create resumed>) = 3 [pid 644] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 646] 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 645] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 647 attached [pid 646] <... write resumed>) = 262144 [pid 645] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 648 [pid 647] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 645] ioctl(4, LOOP_CLR_FD [pid 647] <... prctl resumed>) = 0 [pid 645] <... ioctl resumed>) = 0 [pid 647] setpgid(0, 0) = 0 [pid 647] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 647] write(3, "1000", 4) = 4 [pid 647] close(3) = 0 [pid 647] memfd_create("syzkaller", 0 [pid 644] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 643] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 647] <... memfd_create resumed>) = 3 [pid 647] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 646] munmap(0x7f7bfe3d8000, 262144 [pid 643] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 647] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 646] <... munmap resumed>) = 0 [pid 645] ioctl(4, LOOP_SET_FD, 3 [pid 647] 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 646] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 645] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 643] 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 646] <... openat resumed>) = 4 [pid 645] close(4 [pid 646] ioctl(4, LOOP_SET_FD, 3 [pid 645] <... close resumed>) = 0 [pid 646] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 645] close(3 [pid 646] ioctl(4, LOOP_CLR_FD [pid 645] <... close resumed>) = 0 [pid 644] 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 646] <... ioctl resumed>) = 0 [pid 645] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 645] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 645] exit_group(0) = ? [pid 645] +++ exited with 0 +++ [pid 646] ioctl(4, LOOP_SET_FD, 3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=645, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 647] <... write resumed>) = 262144 [pid 646] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 647] munmap(0x7f7bfe3d8000, 262144 [pid 646] close(4 [pid 643] <... write resumed>) = 262144 ./strace-static-x86_64: Process 648 attached [pid 647] <... munmap resumed>) = 0 [pid 646] <... close resumed>) = 0 [pid 644] <... write resumed>) = 262144 [pid 643] munmap(0x7f7bfe3d8000, 262144 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 648] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 647] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 646] close(3 [pid 310] <... openat resumed>) = 3 [pid 648] <... prctl resumed>) = 0 [pid 647] <... openat resumed>) = 4 [pid 646] <... close resumed>) = 0 [pid 644] munmap(0x7f7bfe3d8000, 262144 [pid 643] <... munmap resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 648] setpgid(0, 0 [pid 647] ioctl(4, LOOP_SET_FD, 3 [pid 646] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 643] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 310] <... ioctl resumed>) = 0 [pid 648] <... setpgid resumed>) = 0 [pid 647] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 646] <... openat resumed>) = 3 [pid 644] <... munmap resumed>) = 0 [pid 643] <... openat resumed>) = 4 [pid 310] close(3 [pid 648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 647] ioctl(4, LOOP_CLR_FD [pid 646] ioctl(3, BLKSECDISCARD, [0, 0] [pid 644] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 643] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... close resumed>) = 0 [pid 648] <... openat resumed>) = 3 [pid 647] <... ioctl resumed>) = 0 [pid 646] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 644] <... openat resumed>) = 4 [pid 643] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 648] write(3, "1000", 4 [pid 646] exit_group(0 [pid 644] ioctl(4, LOOP_SET_FD, 3 [pid 643] ioctl(4, LOOP_CLR_FD [pid 648] <... write resumed>) = 4 [pid 646] <... exit_group resumed>) = ? [pid 644] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 643] <... ioctl resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 649 [pid 648] close(3 [pid 646] +++ exited with 0 +++ [pid 644] ioctl(4, LOOP_CLR_FD [pid 648] <... close resumed>) = 0 [pid 647] ioctl(4, LOOP_SET_FD, 3 [pid 644] <... ioctl resumed>) = 0 [pid 648] memfd_create("syzkaller", 0 [pid 647] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=646, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 648] <... memfd_create resumed>) = 3 [pid 647] close(4 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 648] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 647] <... close resumed>) = 0 [pid 648] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 647] close(3 [pid 643] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... openat resumed>) = 3 [pid 648] 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 647] <... close resumed>) = 0 [pid 643] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] ioctl(3, LOOP_CLR_FD [pid 648] <... write resumed>) = 262144 [pid 647] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 644] ioctl(4, LOOP_SET_FD, 3 [pid 643] close(4 [pid 307] <... ioctl resumed>) = 0 [pid 648] munmap(0x7f7bfe3d8000, 262144 [pid 647] <... openat resumed>) = 3 [pid 644] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 643] <... close resumed>) = 0 [pid 307] close(3./strace-static-x86_64: Process 649 attached [pid 648] <... munmap resumed>) = 0 [pid 647] ioctl(3, BLKSECDISCARD, [0, 0] [pid 644] close(4 [pid 643] close(3 [pid 307] <... close resumed>) = 0 [pid 648] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 647] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 644] <... close resumed>) = 0 [pid 648] <... openat resumed>) = 4 [pid 647] exit_group(0 [pid 648] ioctl(4, LOOP_SET_FD, 3 [pid 647] <... exit_group resumed>) = ? [pid 649] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 648] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 647] +++ exited with 0 +++ [pid 644] close(3 [pid 643] <... close resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 648] ioctl(4, LOOP_CLR_FD [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=647, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 648] <... ioctl resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 644] <... close resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 644] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 643] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 644] <... openat resumed>) = 3 [pid 643] <... openat resumed>) = 3 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 650 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 651 [pid 648] ioctl(4, LOOP_SET_FD, 3 [pid 644] ioctl(3, BLKSECDISCARD, [0, 0] [pid 643] ioctl(3, BLKSECDISCARD, [0, 0] [pid 648] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 644] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 643] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 649] <... prctl resumed>) = 0 [pid 648] close(4 [pid 644] exit_group(0 [pid 643] exit_group(0 [pid 648] <... close resumed>) = 0 [pid 644] <... exit_group resumed>) = ? [pid 649] setpgid(0, 0 [pid 643] <... exit_group resumed>) = ? [pid 648] close(3) = 0 [pid 644] +++ exited with 0 +++ [pid 648] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=644, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 648] <... openat resumed>) = 3 [pid 643] +++ exited with 0 +++ [pid 649] <... setpgid resumed>) = 0 [pid 648] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=643, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 648] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR./strace-static-x86_64: Process 650 attached [pid 649] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 648] exit_group(0 [pid 308] <... openat resumed>) = 3 [pid 650] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 648] <... exit_group resumed>) = ? [pid 308] ioctl(3, LOOP_CLR_FD [pid 650] <... prctl resumed>) = 0 [pid 649] <... openat resumed>) = 3 [pid 648] +++ exited with 0 +++ [pid 308] <... ioctl resumed>) = 0 [pid 650] setpgid(0, 0 [pid 308] close(3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=648, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 650] <... setpgid resumed>) = 0 [pid 649] write(3, "1000", 4 [pid 308] <... close resumed>) = 0 [pid 650] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 650] <... openat resumed>) = 3 [pid 649] <... write resumed>) = 4 [pid 309] <... openat resumed>) = 3 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 650] write(3, "1000", 4 [pid 649] close(3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 652 [pid 305] <... openat resumed>) = 3 [pid 650] <... write resumed>) = 4 [pid 649] <... close resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 650] close(3 [pid 309] close(3 [pid 305] <... ioctl resumed>) = 0 [pid 650] <... close resumed>) = 0 [pid 649] memfd_create("syzkaller", 0 [pid 309] <... close resumed>) = 0 [pid 305] close(3 [pid 650] memfd_create("syzkaller", 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... close resumed>) = 0 [pid 650] <... memfd_create resumed>) = 3 [pid 649] <... memfd_create resumed>) = 3 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 650] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 649] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 653 [pid 650] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 649] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 654 ./strace-static-x86_64: Process 651 attached [pid 650] 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 649] 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 651] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 650] <... write resumed>) = 262144 [pid 651] <... prctl resumed>) = 0 [pid 651] setpgid(0, 0) = 0 [pid 650] munmap(0x7f7bfe3d8000, 262144 [pid 649] <... write resumed>) = 262144 [pid 651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 650] <... munmap resumed>) = 0 [pid 649] munmap(0x7f7bfe3d8000, 262144 [pid 651] <... openat resumed>) = 3 [pid 650] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 651] write(3, "1000", 4) = 4 [pid 650] <... openat resumed>) = 4 [pid 651] close(3 [pid 650] ioctl(4, LOOP_SET_FD, 3 [pid 651] <... close resumed>) = 0 [pid 650] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 649] <... munmap resumed>) = 0 [pid 651] memfd_create("syzkaller", 0 [pid 650] ioctl(4, LOOP_CLR_FD [pid 651] <... memfd_create resumed>) = 3 [pid 650] <... ioctl resumed>) = 0 [pid 651] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 651] 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 649] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 650] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 653 attached ./strace-static-x86_64: Process 652 attached [pid 651] <... write resumed>) = 262144 [pid 650] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 649] <... openat resumed>) = 4 [pid 650] close(4 [pid 649] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 654 attached [pid 653] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 652] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 650] <... close resumed>) = 0 [pid 649] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 654] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 650] close(3 [pid 654] <... prctl resumed>) = 0 [pid 653] <... prctl resumed>) = 0 [pid 652] <... prctl resumed>) = 0 [pid 650] <... close resumed>) = 0 [pid 649] ioctl(4, LOOP_CLR_FD [pid 654] setpgid(0, 0 [pid 650] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 649] <... ioctl resumed>) = 0 [pid 654] <... setpgid resumed>) = 0 [pid 653] setpgid(0, 0 [pid 652] setpgid(0, 0 [pid 651] munmap(0x7f7bfe3d8000, 262144 [pid 650] <... openat resumed>) = 3 [pid 654] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 653] <... setpgid resumed>) = 0 [pid 652] <... setpgid resumed>) = 0 [pid 651] <... munmap resumed>) = 0 [pid 650] ioctl(3, BLKSECDISCARD, [0, 0] [pid 654] <... openat resumed>) = 3 [pid 651] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 650] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 653] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 654] write(3, "1000", 4 [pid 651] <... openat resumed>) = 4 [pid 650] exit_group(0 [pid 653] <... openat resumed>) = 3 [pid 649] ioctl(4, LOOP_SET_FD, 3 [pid 654] <... write resumed>) = 4 [pid 651] ioctl(4, LOOP_SET_FD, 3 [pid 650] <... exit_group resumed>) = ? [pid 649] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 649] close(4 [pid 654] close(3 [pid 653] write(3, "1000", 4 [pid 652] <... openat resumed>) = 3 [pid 651] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 650] +++ exited with 0 +++ [pid 649] <... close resumed>) = 0 [pid 654] <... close resumed>) = 0 [pid 653] <... write resumed>) = 4 [pid 652] write(3, "1000", 4 [pid 651] ioctl(4, LOOP_CLR_FD [pid 649] close(3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=650, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 654] memfd_create("syzkaller", 0 [pid 653] close(3 [pid 652] <... write resumed>) = 4 [pid 651] <... ioctl resumed>) = 0 [pid 654] <... memfd_create resumed>) = 3 [pid 654] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 654] 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 653] <... close resumed>) = 0 [pid 652] close(3 [pid 649] <... close resumed>) = 0 [pid 654] <... write resumed>) = 262144 [pid 653] memfd_create("syzkaller", 0 [pid 652] <... close resumed>) = 0 [pid 651] ioctl(4, LOOP_SET_FD, 3 [pid 649] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 654] munmap(0x7f7bfe3d8000, 262144 [pid 651] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 654] <... munmap resumed>) = 0 [pid 653] <... memfd_create resumed>) = 3 [pid 652] memfd_create("syzkaller", 0 [pid 651] close(4 [pid 649] <... openat resumed>) = 3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 654] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 651] <... close resumed>) = 0 [pid 654] <... openat resumed>) = 4 [pid 651] close(3 [pid 654] ioctl(4, LOOP_SET_FD, 3 [pid 653] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 652] <... memfd_create resumed>) = 3 [pid 651] <... close resumed>) = 0 [pid 649] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] <... openat resumed>) = 3 [pid 654] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 651] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 654] ioctl(4, LOOP_CLR_FD [pid 653] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 651] <... openat resumed>) = 3 [pid 652] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 649] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] ioctl(3, LOOP_CLR_FD [pid 654] <... ioctl resumed>) = 0 [pid 651] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] <... ioctl resumed>) = 0 [pid 651] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 651] exit_group(0) = ? [pid 651] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=651, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 653] 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 652] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 649] exit_group(0 [pid 307] close(3 [pid 306] <... restart_syscall resumed>) = 0 [pid 653] <... write resumed>) = 262144 [pid 652] 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 649] <... exit_group resumed>) = ? [pid 307] <... close resumed>) = 0 [pid 654] ioctl(4, LOOP_SET_FD, 3 [pid 653] munmap(0x7f7bfe3d8000, 262144 [pid 652] <... write resumed>) = 262144 [pid 649] +++ exited with 0 +++ [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 654] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 653] <... munmap resumed>) = 0 [pid 652] munmap(0x7f7bfe3d8000, 262144 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 654] close(4 [pid 653] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 652] <... munmap resumed>) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=649, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 655 [pid 654] <... close resumed>) = 0 [pid 653] <... openat resumed>) = 4 [pid 652] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 306] <... openat resumed>) = 3 [pid 654] close(3 [pid 653] ioctl(4, LOOP_SET_FD, 3 [pid 652] <... openat resumed>) = 4 [pid 310] <... restart_syscall resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 653] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 652] ioctl(4, LOOP_SET_FD, 3 [pid 653] ioctl(4, LOOP_CLR_FD [pid 652] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 654] <... close resumed>) = 0 [pid 653] <... ioctl resumed>) = 0 [pid 652] ioctl(4, LOOP_CLR_FD [pid 306] <... ioctl resumed>) = 0 [pid 654] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 652] <... ioctl resumed>) = 0 [pid 654] <... openat resumed>) = 3 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 306] close(3 [pid 654] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] <... openat resumed>) = 3 [pid 654] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] ioctl(3, LOOP_CLR_FD [pid 306] <... close resumed>) = 0 [pid 654] exit_group(0 [pid 653] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... ioctl resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 654] <... exit_group resumed>) = ? [pid 653] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 652] ioctl(4, LOOP_SET_FD, 3 [pid 310] close(3 [pid 653] close(4 [pid 652] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 653] <... close resumed>) = 0 [pid 652] close(4 [pid 653] close(3 [pid 652] <... close resumed>) = 0 [pid 654] +++ exited with 0 +++ [pid 653] <... close resumed>) = 0 [pid 652] close(3 [pid 310] <... close resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 656 ./strace-static-x86_64: Process 655 attached [pid 653] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 652] <... close resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=654, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 653] <... openat resumed>) = 3 [pid 652] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 653] ioctl(3, BLKSECDISCARD, [0, 0] [pid 652] <... openat resumed>) = 3 [pid 653] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 652] ioctl(3, BLKSECDISCARD, [0, 0] [pid 655] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 653] exit_group(0 [pid 652] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 657 [pid 653] <... exit_group resumed>) = ? [pid 652] exit_group(0./strace-static-x86_64: Process 656 attached [pid 655] <... prctl resumed>) = 0 [pid 653] +++ exited with 0 +++ [pid 652] <... exit_group resumed>) = ? [pid 656] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 655] setpgid(0, 0 [pid 652] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=653, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 656] <... prctl resumed>) = 0 [pid 655] <... setpgid resumed>) = 0 [pid 656] setpgid(0, 0 [pid 655] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 305] <... openat resumed>) = 3 [pid 656] <... setpgid resumed>) = 0 [pid 655] <... openat resumed>) = 3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=652, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] ioctl(3, LOOP_CLR_FD [pid 656] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 305] <... ioctl resumed>) = 0 [pid 655] write(3, "1000", 4 [pid 656] <... openat resumed>) = 3 [pid 309] <... openat resumed>) = 3 [pid 308] <... openat resumed>) = 3 [pid 305] close(3 [pid 656] write(3, "1000", 4 [pid 655] <... write resumed>) = 4 [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 657 attached [pid 656] <... write resumed>) = 4 [pid 655] close(3 [pid 309] <... ioctl resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 657] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 656] close(3 [pid 655] <... close resumed>) = 0 [pid 309] close(3 [pid 308] close(3 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 657] <... prctl resumed>) = 0 [pid 656] <... close resumed>) = 0 [pid 655] memfd_create("syzkaller", 0 [pid 309] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 657] setpgid(0, 0) = 0 [pid 657] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 656] memfd_create("syzkaller", 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 657] <... openat resumed>) = 3 [pid 655] <... memfd_create resumed>) = 3 [pid 657] write(3, "1000", 4) = 4 [pid 657] close(3) = 0 [pid 656] <... memfd_create resumed>) = 3 [pid 655] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 659 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 658 [pid 657] memfd_create("syzkaller", 0 [pid 656] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 655] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 660 [pid 656] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 657] <... memfd_create resumed>) = 3 [pid 657] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 657] 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 655] 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 657] <... write resumed>) = 262144 [pid 656] 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 658 attached [pid 658] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 658] setpgid(0, 0) = 0 [pid 658] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 657] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 658] <... openat resumed>) = 3 [pid 655] <... write resumed>) = 262144 [pid 656] <... write resumed>) = 262144 [pid 655] munmap(0x7f7bfe3d8000, 262144 [pid 656] munmap(0x7f7bfe3d8000, 262144 [pid 658] write(3, "1000", 4 [pid 657] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 655] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 659 attached [pid 658] <... write resumed>) = 4 [pid 657] <... openat resumed>) = 4 [pid 655] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 656] <... munmap resumed>) = 0 [pid 659] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 658] close(3 [pid 657] ioctl(4, LOOP_SET_FD, 3 [pid 656] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 655] <... openat resumed>) = 4 [pid 659] <... prctl resumed>) = 0 [pid 655] ioctl(4, LOOP_SET_FD, 3 [pid 656] <... openat resumed>) = 4 [pid 659] setpgid(0, 0 [pid 658] <... close resumed>) = 0 [pid 657] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 656] ioctl(4, LOOP_SET_FD, 3 [pid 655] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 660 attached [pid 659] <... setpgid resumed>) = 0 [pid 658] memfd_create("syzkaller", 0 [pid 657] ioctl(4, LOOP_CLR_FD [pid 656] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 655] ioctl(4, LOOP_CLR_FD [pid 660] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 659] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 658] <... memfd_create resumed>) = 3 [pid 657] <... ioctl resumed>) = 0 [pid 656] ioctl(4, LOOP_CLR_FD [pid 655] <... ioctl resumed>) = 0 [pid 660] <... prctl resumed>) = 0 [pid 659] <... openat resumed>) = 3 [pid 658] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 656] <... ioctl resumed>) = 0 [pid 660] setpgid(0, 0) = 0 [pid 659] write(3, "1000", 4 [pid 658] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 660] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 659] <... write resumed>) = 4 [pid 658] 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 660] <... openat resumed>) = 3 [pid 659] close(3 [pid 658] <... write resumed>) = 262144 [pid 657] ioctl(4, LOOP_SET_FD, 3 [pid 656] ioctl(4, LOOP_SET_FD, 3 [pid 655] ioctl(4, LOOP_SET_FD, 3 [pid 660] write(3, "1000", 4 [pid 659] <... close resumed>) = 0 [pid 657] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 656] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 655] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 660] <... write resumed>) = 4 [pid 659] memfd_create("syzkaller", 0 [pid 658] munmap(0x7f7bfe3d8000, 262144 [pid 657] close(4 [pid 656] close(4 [pid 655] close(4 [pid 660] close(3 [pid 659] <... memfd_create resumed>) = 3 [pid 658] <... munmap resumed>) = 0 [pid 657] <... close resumed>) = 0 [pid 656] <... close resumed>) = 0 [pid 655] <... close resumed>) = 0 [pid 660] <... close resumed>) = 0 [pid 659] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 658] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 657] close(3 [pid 660] memfd_create("syzkaller", 0 [pid 659] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 658] <... openat resumed>) = 4 [pid 657] <... close resumed>) = 0 [pid 656] close(3 [pid 655] close(3 [pid 660] <... memfd_create resumed>) = 3 [pid 659] 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 658] ioctl(4, LOOP_SET_FD, 3 [pid 657] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 659] <... write resumed>) = 262144 [pid 658] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 657] <... openat resumed>) = 3 [pid 656] <... close resumed>) = 0 [pid 660] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 659] munmap(0x7f7bfe3d8000, 262144 [pid 658] ioctl(4, LOOP_CLR_FD [pid 657] ioctl(3, BLKSECDISCARD, [0, 0] [pid 656] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 655] <... close resumed>) = 0 [pid 660] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 659] <... munmap resumed>) = 0 [pid 658] <... ioctl resumed>) = 0 [pid 657] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 656] <... openat resumed>) = 3 [pid 659] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 657] exit_group(0 [pid 659] <... openat resumed>) = 4 [pid 657] <... exit_group resumed>) = ? [pid 660] 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 659] ioctl(4, LOOP_SET_FD, 3 [pid 657] +++ exited with 0 +++ [pid 656] ioctl(3, BLKSECDISCARD, [0, 0] [pid 655] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 659] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 659] ioctl(4, LOOP_CLR_FD [pid 658] ioctl(4, LOOP_SET_FD, 3 [pid 659] <... ioctl resumed>) = 0 [pid 658] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 660] <... write resumed>) = 262144 [pid 658] close(4 [pid 656] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 655] <... openat resumed>) = 3 [pid 660] munmap(0x7f7bfe3d8000, 262144 [pid 658] <... close resumed>) = 0 [pid 658] close(3 [pid 656] exit_group(0 [pid 655] ioctl(3, BLKSECDISCARD, [0, 0] [pid 660] <... munmap resumed>) = 0 [pid 658] <... close resumed>) = 0 [pid 656] <... exit_group resumed>) = ? [pid 655] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=657, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 660] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 659] ioctl(4, LOOP_SET_FD, 3 [pid 658] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 659] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 658] <... openat resumed>) = 3 [pid 659] close(4 [pid 658] ioctl(3, BLKSECDISCARD, [0, 0] [pid 656] +++ exited with 0 +++ [pid 655] exit_group(0 [pid 660] <... openat resumed>) = 4 [pid 659] <... close resumed>) = 0 [pid 658] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 655] <... exit_group resumed>) = ? [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=656, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 660] ioctl(4, LOOP_SET_FD, 3 [pid 659] close(3 [pid 658] exit_group(0 [pid 660] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 659] <... close resumed>) = 0 [pid 658] <... exit_group resumed>) = ? [pid 655] +++ exited with 0 +++ [pid 310] <... restart_syscall resumed>) = 0 [pid 660] ioctl(4, LOOP_CLR_FD [pid 659] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 658] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=655, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=658, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 660] <... ioctl resumed>) = 0 [pid 659] <... openat resumed>) = 3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 659] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 659] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] <... openat resumed>) = 3 [pid 659] exit_group(0 [pid 310] <... openat resumed>) = 3 [pid 307] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 659] <... exit_group resumed>) = ? [pid 310] ioctl(3, LOOP_CLR_FD [pid 307] ioctl(3, LOOP_CLR_FD [pid 306] <... ioctl resumed>) = 0 [pid 659] +++ exited with 0 +++ [pid 310] <... ioctl resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 306] close(3 [pid 660] ioctl(4, LOOP_SET_FD, 3 [pid 310] close(3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=659, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] close(3 [pid 306] <... close resumed>) = 0 [pid 660] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] <... close resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 660] close(4 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 660] <... close resumed>) = 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 662 [pid 660] close(3 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 661 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 663 ./strace-static-x86_64: Process 661 attached [pid 661] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 661] setpgid(0, 0) = 0 [pid 660] <... close resumed>) = 0 [pid 660] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] <... openat resumed>) = 3 [pid 660] <... openat resumed>) = 3 [pid 660] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 305] ioctl(3, LOOP_CLR_FD [pid 660] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] <... openat resumed>) = 3 [pid 305] <... ioctl resumed>) = 0 [pid 660] exit_group(0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 305] close(3 [pid 660] <... exit_group resumed>) = ? [pid 308] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 305] <... close resumed>) = 0 [pid 661] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 660] +++ exited with 0 +++ [pid 308] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=660, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 661] write(3, "1000", 4) = 4 [pid 661] close(3) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 664 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 665 [pid 309] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 661] memfd_create("syzkaller", 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 666 [pid 661] <... memfd_create resumed>) = 3 [pid 661] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 ./strace-static-x86_64: Process 665 attached [pid 661] 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 665] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 665] setpgid(0, 0./strace-static-x86_64: Process 662 attached ) = 0 [pid 665] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 662] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 665] <... openat resumed>) = 3 [pid 662] <... prctl resumed>) = 0 [pid 661] <... write resumed>) = 262144 [pid 665] write(3, "1000", 4 [pid 662] setpgid(0, 0 [pid 665] <... write resumed>) = 4 [pid 662] <... setpgid resumed>) = 0 [pid 665] close(3 [pid 662] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 665] <... close resumed>) = 0 [pid 665] memfd_create("syzkaller", 0 [pid 662] <... openat resumed>) = 3 [pid 665] <... memfd_create resumed>) = 3 [pid 662] write(3, "1000", 4 [pid 665] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 662] <... write resumed>) = 4 [pid 665] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 662] close(3 [pid 661] munmap(0x7f7bfe3d8000, 262144./strace-static-x86_64: Process 664 attached [pid 664] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 661] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 666 attached [pid 664] <... prctl resumed>) = 0 [pid 662] <... close resumed>) = 0 ./strace-static-x86_64: Process 663 attached [pid 666] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 664] setpgid(0, 0 [pid 662] memfd_create("syzkaller", 0 [pid 661] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 665] 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 662] <... memfd_create resumed>) = 3 [pid 666] <... prctl resumed>) = 0 [pid 664] <... setpgid resumed>) = 0 [pid 663] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 662] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 661] <... openat resumed>) = 4 [pid 666] setpgid(0, 0) = 0 [pid 664] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 663] <... prctl resumed>) = 0 [pid 662] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 661] ioctl(4, LOOP_SET_FD, 3 [pid 666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 664] <... openat resumed>) = 3 [pid 663] setpgid(0, 0 [pid 661] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 666] <... openat resumed>) = 3 [pid 664] write(3, "1000", 4 [pid 663] <... setpgid resumed>) = 0 [pid 661] ioctl(4, LOOP_CLR_FD [pid 666] write(3, "1000", 4 [pid 664] <... write resumed>) = 4 [pid 663] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 661] <... ioctl resumed>) = 0 [pid 666] <... write resumed>) = 4 [pid 664] close(3 [pid 663] <... openat resumed>) = 3 [pid 666] close(3 [pid 664] <... close resumed>) = 0 [pid 663] write(3, "1000", 4 [pid 666] <... close resumed>) = 0 [pid 664] memfd_create("syzkaller", 0 [pid 663] <... write resumed>) = 4 [pid 666] memfd_create("syzkaller", 0 [pid 665] <... write resumed>) = 262144 [pid 664] <... memfd_create resumed>) = 3 [pid 663] close(3 [pid 662] 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 666] <... memfd_create resumed>) = 3 [pid 664] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 663] <... close resumed>) = 0 [pid 665] munmap(0x7f7bfe3d8000, 262144 [pid 666] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 665] <... munmap resumed>) = 0 [pid 664] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 663] memfd_create("syzkaller", 0 [pid 661] ioctl(4, LOOP_SET_FD, 3 [pid 666] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 665] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 664] 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 663] <... memfd_create resumed>) = 3 [pid 662] <... write resumed>) = 262144 [pid 661] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 666] 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 665] <... openat resumed>) = 4 [pid 664] <... write resumed>) = 262144 [pid 663] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 662] munmap(0x7f7bfe3d8000, 262144 [pid 661] close(4 [pid 666] <... write resumed>) = 262144 [pid 665] ioctl(4, LOOP_SET_FD, 3 [pid 664] munmap(0x7f7bfe3d8000, 262144 [pid 663] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 662] <... munmap resumed>) = 0 [pid 661] <... close resumed>) = 0 [pid 666] munmap(0x7f7bfe3d8000, 262144 [pid 665] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 664] <... munmap resumed>) = 0 [pid 663] 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 662] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 661] close(3 [pid 666] <... munmap resumed>) = 0 [pid 665] ioctl(4, LOOP_CLR_FD [pid 664] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 663] <... write resumed>) = 262144 [pid 662] <... openat resumed>) = 4 [pid 661] <... close resumed>) = 0 [pid 666] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 665] <... ioctl resumed>) = 0 [pid 664] <... openat resumed>) = 4 [pid 663] munmap(0x7f7bfe3d8000, 262144 [pid 662] ioctl(4, LOOP_SET_FD, 3 [pid 661] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 666] <... openat resumed>) = 4 [pid 664] ioctl(4, LOOP_SET_FD, 3 [pid 663] <... munmap resumed>) = 0 [pid 662] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 661] <... openat resumed>) = 3 [pid 666] ioctl(4, LOOP_SET_FD, 3 [pid 664] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 663] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 662] ioctl(4, LOOP_CLR_FD [pid 661] ioctl(3, BLKSECDISCARD, [0, 0] [pid 666] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 664] ioctl(4, LOOP_CLR_FD [pid 663] <... openat resumed>) = 4 [pid 662] <... ioctl resumed>) = 0 [pid 661] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 666] ioctl(4, LOOP_CLR_FD [pid 664] <... ioctl resumed>) = 0 [pid 663] ioctl(4, LOOP_SET_FD, 3 [pid 661] exit_group(0 [pid 666] <... ioctl resumed>) = 0 [pid 665] ioctl(4, LOOP_SET_FD, 3 [pid 663] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 661] <... exit_group resumed>) = ? [pid 665] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 663] ioctl(4, LOOP_CLR_FD [pid 661] +++ exited with 0 +++ [pid 665] close(4 [pid 664] ioctl(4, LOOP_SET_FD, 3 [pid 663] <... ioctl resumed>) = 0 [pid 662] ioctl(4, LOOP_SET_FD, 3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=661, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 665] <... close resumed>) = 0 [pid 664] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 662] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 666] ioctl(4, LOOP_SET_FD, 3 [pid 665] close(3 [pid 664] close(4 [pid 662] close(4 [pid 666] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 664] <... close resumed>) = 0 [pid 666] close(4 [pid 664] close(3 [pid 666] <... close resumed>) = 0 [pid 665] <... close resumed>) = 0 [pid 664] <... close resumed>) = 0 [pid 663] ioctl(4, LOOP_SET_FD, 3 [pid 662] <... close resumed>) = 0 [pid 666] close(3 [pid 665] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 664] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 663] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 662] close(3 [pid 666] <... close resumed>) = 0 [pid 665] <... openat resumed>) = 3 [pid 664] <... openat resumed>) = 3 [pid 663] close(4 [pid 666] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 664] ioctl(3, BLKSECDISCARD, [0, 0] [pid 663] <... close resumed>) = 0 [pid 666] <... openat resumed>) = 3 [pid 665] ioctl(3, BLKSECDISCARD, [0, 0] [pid 664] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 663] close(3 [pid 662] <... close resumed>) = 0 [pid 666] ioctl(3, BLKSECDISCARD, [0, 0] [pid 665] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 664] exit_group(0 [pid 663] <... close resumed>) = 0 [pid 662] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 666] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 665] exit_group(0 [pid 664] <... exit_group resumed>) = ? [pid 663] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 662] <... openat resumed>) = 3 [pid 666] exit_group(0 [pid 665] <... exit_group resumed>) = ? [pid 664] +++ exited with 0 +++ [pid 663] <... openat resumed>) = 3 [pid 662] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] <... openat resumed>) = 3 [pid 666] <... exit_group resumed>) = ? [pid 663] ioctl(3, BLKSECDISCARD, [0, 0] [pid 666] +++ exited with 0 +++ [pid 665] +++ exited with 0 +++ [pid 663] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 662] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] ioctl(3, LOOP_CLR_FD [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=664, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 663] exit_group(0 [pid 662] exit_group(0 [pid 663] <... exit_group resumed>) = ? [pid 662] <... exit_group resumed>) = ? [pid 306] <... ioctl resumed>) = 0 [pid 663] +++ exited with 0 +++ [pid 662] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=666, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=665, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] close(3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=663, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=662, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... close resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 309] <... openat resumed>) = 3 [pid 308] <... openat resumed>) = 3 [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... openat resumed>) = 3 [pid 310] <... restart_syscall resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] ioctl(3, LOOP_CLR_FD [pid 307] <... restart_syscall resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 309] <... ioctl resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 667 [pid 305] <... ioctl resumed>) = 0 [pid 309] close(3 [pid 308] close(3 [pid 305] close(3 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 309] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 668 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 669 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 670 [pid 310] close(3) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 671 ./strace-static-x86_64: Process 671 attached [pid 671] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 671] setpgid(0, 0) = 0 [pid 671] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 669 attached [pid 669] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 669] setpgid(0, 0) = 0 [pid 669] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 671] <... openat resumed>) = 3 [pid 671] write(3, "1000", 4) = 4 [pid 669] <... openat resumed>) = 3 [pid 671] close(3) = 0 [pid 671] memfd_create("syzkaller", 0 [pid 669] write(3, "1000", 4 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 669] <... write resumed>) = 4 [pid 307] close(3 [pid 671] <... memfd_create resumed>) = 3 [pid 307] <... close resumed>) = 0 ./strace-static-x86_64: Process 667 attached [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 669] close(3) = 0 [pid 667] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 672 [pid 671] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 669] memfd_create("syzkaller", 0 [pid 667] <... prctl resumed>) = 0 [pid 667] setpgid(0, 0 [pid 669] <... memfd_create resumed>) = 3 [pid 667] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 670 attached [pid 669] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 667] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 672 attached ./strace-static-x86_64: Process 668 attached [pid 670] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 671] 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 670] <... prctl resumed>) = 0 [pid 667] <... openat resumed>) = 3 [pid 667] write(3, "1000", 4 [pid 670] setpgid(0, 0 [pid 667] <... write resumed>) = 4 [pid 668] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 672] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 669] 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 667] close(3 [pid 672] <... prctl resumed>) = 0 [pid 670] <... setpgid resumed>) = 0 [pid 668] <... prctl resumed>) = 0 [pid 667] <... close resumed>) = 0 [pid 672] setpgid(0, 0 [pid 670] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 668] setpgid(0, 0 [pid 667] memfd_create("syzkaller", 0 [pid 672] <... setpgid resumed>) = 0 [pid 670] <... openat resumed>) = 3 [pid 669] <... write resumed>) = 262144 [pid 668] <... setpgid resumed>) = 0 [pid 667] <... memfd_create resumed>) = 3 [pid 667] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 670] write(3, "1000", 4 [pid 667] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 671] <... write resumed>) = 262144 [pid 670] <... write resumed>) = 4 [pid 668] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 667] 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 672] <... openat resumed>) = 3 [pid 670] close(3 [pid 668] <... openat resumed>) = 3 [pid 671] munmap(0x7f7bfe3d8000, 262144 [pid 669] munmap(0x7f7bfe3d8000, 262144 [pid 672] write(3, "1000", 4 [pid 671] <... munmap resumed>) = 0 [pid 670] <... close resumed>) = 0 [pid 669] <... munmap resumed>) = 0 [pid 668] write(3, "1000", 4 [pid 672] <... write resumed>) = 4 [pid 671] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 670] memfd_create("syzkaller", 0 [pid 669] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 668] <... write resumed>) = 4 [pid 667] <... write resumed>) = 262144 [pid 671] <... openat resumed>) = 4 [pid 669] <... openat resumed>) = 4 [pid 667] munmap(0x7f7bfe3d8000, 262144 [pid 672] close(3 [pid 671] ioctl(4, LOOP_SET_FD, 3 [pid 669] ioctl(4, LOOP_SET_FD, 3 [pid 667] <... munmap resumed>) = 0 [pid 672] <... close resumed>) = 0 [pid 671] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 670] <... memfd_create resumed>) = 3 [pid 669] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 668] close(3 [pid 667] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 671] ioctl(4, LOOP_CLR_FD [pid 669] ioctl(4, LOOP_CLR_FD [pid 668] <... close resumed>) = 0 [pid 667] <... openat resumed>) = 4 [pid 672] memfd_create("syzkaller", 0 [pid 671] <... ioctl resumed>) = 0 [pid 670] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 669] <... ioctl resumed>) = 0 [pid 667] ioctl(4, LOOP_SET_FD, 3 [pid 668] memfd_create("syzkaller", 0 [pid 667] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 670] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 667] ioctl(4, LOOP_CLR_FD [pid 668] <... memfd_create resumed>) = 3 [pid 667] <... ioctl resumed>) = 0 [pid 671] ioctl(4, LOOP_SET_FD, 3 [pid 669] ioctl(4, LOOP_SET_FD, 3 [pid 671] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 669] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 671] close(4 [pid 670] 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 669] close(4 [pid 672] <... memfd_create resumed>) = 3 [pid 671] <... close resumed>) = 0 [pid 669] <... close resumed>) = 0 [pid 668] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 667] ioctl(4, LOOP_SET_FD, 3 [pid 671] close(3 [pid 669] close(3 [pid 667] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 672] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 671] <... close resumed>) = 0 [pid 670] <... write resumed>) = 262144 [pid 668] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 672] 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 671] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 670] munmap(0x7f7bfe3d8000, 262144 [pid 669] <... close resumed>) = 0 [pid 668] 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 667] close(4 [pid 672] <... write resumed>) = 262144 [pid 671] <... openat resumed>) = 3 [pid 670] <... munmap resumed>) = 0 [pid 669] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 668] <... write resumed>) = 262144 [pid 667] <... close resumed>) = 0 [pid 672] munmap(0x7f7bfe3d8000, 262144 [pid 671] ioctl(3, BLKSECDISCARD, [0, 0] [pid 670] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 669] <... openat resumed>) = 3 [pid 668] munmap(0x7f7bfe3d8000, 262144 [pid 667] close(3 [pid 672] <... munmap resumed>) = 0 [pid 671] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 670] <... openat resumed>) = 4 [pid 669] ioctl(3, BLKSECDISCARD, [0, 0] [pid 668] <... munmap resumed>) = 0 [pid 672] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 670] ioctl(4, LOOP_SET_FD, 3 [pid 668] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 672] <... openat resumed>) = 4 [pid 671] exit_group(0 [pid 670] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 669] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 668] <... openat resumed>) = 4 [pid 667] <... close resumed>) = 0 [pid 672] ioctl(4, LOOP_SET_FD, 3 [pid 671] <... exit_group resumed>) = ? [pid 670] ioctl(4, LOOP_CLR_FD [pid 669] exit_group(0 [pid 668] ioctl(4, LOOP_SET_FD, 3 [pid 667] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 672] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 670] <... ioctl resumed>) = 0 [pid 668] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 672] ioctl(4, LOOP_CLR_FD [pid 671] +++ exited with 0 +++ [pid 668] ioctl(4, LOOP_CLR_FD [pid 672] <... ioctl resumed>) = 0 [pid 669] <... exit_group resumed>) = ? [pid 668] <... ioctl resumed>) = 0 [pid 667] <... openat resumed>) = 3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=671, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 667] ioctl(3, BLKSECDISCARD, [0, 0] [pid 670] ioctl(4, LOOP_SET_FD, 3 [pid 669] +++ exited with 0 +++ [pid 667] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 670] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 667] exit_group(0 [pid 672] ioctl(4, LOOP_SET_FD, 3 [pid 670] close(4 [pid 668] ioctl(4, LOOP_SET_FD, 3 [pid 667] <... exit_group resumed>) = ? [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 672] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 670] <... close resumed>) = 0 [pid 668] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 667] +++ exited with 0 +++ [pid 310] <... openat resumed>) = 3 [pid 672] close(4 [pid 670] close(3 [pid 668] close(4 [pid 310] ioctl(3, LOOP_CLR_FD [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=669, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=667, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 672] <... close resumed>) = 0 [pid 670] <... close resumed>) = 0 [pid 668] <... close resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 672] close(3 [pid 670] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 668] close(3 [pid 310] close(3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 672] <... close resumed>) = 0 [pid 670] <... openat resumed>) = 3 [pid 668] <... close resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 672] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 670] ioctl(3, BLKSECDISCARD, [0, 0] [pid 668] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] ioctl(3, LOOP_CLR_FD [pid 672] <... openat resumed>) = 3 [pid 670] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 668] <... openat resumed>) = 3 [pid 672] ioctl(3, BLKSECDISCARD, [0, 0] [pid 670] exit_group(0 [pid 668] ioctl(3, BLKSECDISCARD, [0, 0] [pid 672] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 670] <... exit_group resumed>) = ? [pid 668] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] <... ioctl resumed>) = 0 [pid 672] exit_group(0 [pid 670] +++ exited with 0 +++ [pid 668] exit_group(0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 673 [pid 308] close(3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=670, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 672] <... exit_group resumed>) = ? [pid 668] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 673 attached [pid 672] +++ exited with 0 +++ [pid 668] +++ exited with 0 +++ [pid 308] <... close resumed>) = 0 [pid 673] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=668, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=672, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 673] <... prctl resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 673] setpgid(0, 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 673] <... setpgid resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 674 [pid 306] <... ioctl resumed>) = 0 [pid 673] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 306] close(3 [pid 305] <... openat resumed>) = 3 [pid 306] <... close resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 673] <... openat resumed>) = 3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... ioctl resumed>) = 0 [pid 673] write(3, "1000", 4 [pid 305] close(3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 675 [pid 307] <... openat resumed>) = 3 [pid 305] <... close resumed>) = 0 [pid 673] <... write resumed>) = 4 [pid 307] ioctl(3, LOOP_CLR_FD [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 673] close(3 [pid 309] <... openat resumed>) = 3 [pid 307] <... ioctl resumed>) = 0 [pid 307] close(3) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] ioctl(3, LOOP_CLR_FD [pid 673] <... close resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 676 [pid 673] memfd_create("syzkaller", 0 [pid 309] close(3 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 677 [pid 673] <... memfd_create resumed>) = 3 [pid 309] <... close resumed>) = 0 [pid 673] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 676 attached [pid 676] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 673] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 678 [pid 676] <... prctl resumed>) = 0 [pid 676] setpgid(0, 0) = 0 [pid 676] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 673] 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 676] write(3, "1000", 4./strace-static-x86_64: Process 674 attached ) = 4 [pid 676] close(3 [pid 673] <... write resumed>) = 262144 [pid 673] munmap(0x7f7bfe3d8000, 262144 [pid 676] <... close resumed>) = 0 [pid 673] <... munmap resumed>) = 0 [pid 673] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 676] memfd_create("syzkaller", 0 [pid 674] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 675 attached [pid 673] ioctl(4, LOOP_SET_FD, 3 [pid 676] <... memfd_create resumed>) = 3 [pid 675] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 674] <... prctl resumed>) = 0 [pid 673] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 676] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 675] <... prctl resumed>) = 0 [pid 674] setpgid(0, 0 [pid 673] ioctl(4, LOOP_CLR_FD./strace-static-x86_64: Process 677 attached [pid 676] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 675] setpgid(0, 0 [pid 674] <... setpgid resumed>) = 0 [pid 673] <... ioctl resumed>) = 0 [pid 677] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 675] <... setpgid resumed>) = 0 [pid 674] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 677] <... prctl resumed>) = 0 [pid 675] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 674] <... openat resumed>) = 3 [pid 677] setpgid(0, 0 [pid 676] 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 675] <... openat resumed>) = 3 [pid 674] write(3, "1000", 4 [pid 677] <... setpgid resumed>) = 0 [pid 675] write(3, "1000", 4 [pid 674] <... write resumed>) = 4 [pid 673] ioctl(4, LOOP_SET_FD, 3 [pid 677] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 675] <... write resumed>) = 4 [pid 674] close(3 [pid 673] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 678 attached [pid 677] <... openat resumed>) = 3 [pid 675] close(3 [pid 674] <... close resumed>) = 0 [pid 673] close(4 [pid 678] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 677] write(3, "1000", 4 [pid 675] <... close resumed>) = 0 [pid 674] memfd_create("syzkaller", 0 [pid 673] <... close resumed>) = 0 [pid 678] <... prctl resumed>) = 0 [pid 677] <... write resumed>) = 4 [pid 675] memfd_create("syzkaller", 0 [pid 674] <... memfd_create resumed>) = 3 [pid 673] close(3 [pid 678] setpgid(0, 0 [pid 677] close(3 [pid 676] <... write resumed>) = 262144 [pid 675] <... memfd_create resumed>) = 3 [pid 674] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 678] <... setpgid resumed>) = 0 [pid 674] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 678] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 677] <... close resumed>) = 0 [pid 676] munmap(0x7f7bfe3d8000, 262144 [pid 675] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 674] 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 673] <... close resumed>) = 0 [pid 678] <... openat resumed>) = 3 [pid 677] memfd_create("syzkaller", 0 [pid 676] <... munmap resumed>) = 0 [pid 675] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 674] <... write resumed>) = 262144 [pid 673] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 678] write(3, "1000", 4 [pid 677] <... memfd_create resumed>) = 3 [pid 676] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 678] <... write resumed>) = 4 [pid 676] <... openat resumed>) = 4 [pid 678] close(3 [pid 676] ioctl(4, LOOP_SET_FD, 3 [pid 678] <... close resumed>) = 0 [pid 676] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 678] memfd_create("syzkaller", 0 [pid 676] ioctl(4, LOOP_CLR_FD [pid 675] 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 674] munmap(0x7f7bfe3d8000, 262144 [pid 678] <... memfd_create resumed>) = 3 [pid 677] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 676] <... ioctl resumed>) = 0 [pid 674] <... munmap resumed>) = 0 [pid 673] <... openat resumed>) = 3 [pid 678] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 674] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 678] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 675] <... write resumed>) = 262144 [pid 674] <... openat resumed>) = 4 [pid 678] 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 677] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 675] munmap(0x7f7bfe3d8000, 262144 [pid 674] ioctl(4, LOOP_SET_FD, 3 [pid 673] ioctl(3, BLKSECDISCARD, [0, 0] [pid 677] 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 676] ioctl(4, LOOP_SET_FD, 3 [pid 674] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 678] <... write resumed>) = 262144 [pid 676] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 675] <... munmap resumed>) = 0 [pid 674] ioctl(4, LOOP_CLR_FD [pid 673] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 678] munmap(0x7f7bfe3d8000, 262144 [pid 676] close(4 [pid 674] <... ioctl resumed>) = 0 [pid 678] <... munmap resumed>) = 0 [pid 676] <... close resumed>) = 0 [pid 678] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 677] <... write resumed>) = 262144 [pid 676] close(3 [pid 675] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 673] exit_group(0 [pid 677] munmap(0x7f7bfe3d8000, 262144 [pid 673] <... exit_group resumed>) = ? [pid 675] <... openat resumed>) = 4 [pid 678] <... openat resumed>) = 4 [pid 677] <... munmap resumed>) = 0 [pid 676] <... close resumed>) = 0 [pid 675] ioctl(4, LOOP_SET_FD, 3 [pid 673] +++ exited with 0 +++ [pid 678] ioctl(4, LOOP_SET_FD, 3 [pid 677] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 676] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 675] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 674] ioctl(4, LOOP_SET_FD, 3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=673, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 678] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 677] <... openat resumed>) = 4 [pid 676] <... openat resumed>) = 3 [pid 675] ioctl(4, LOOP_CLR_FD [pid 674] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 678] ioctl(4, LOOP_CLR_FD [pid 677] ioctl(4, LOOP_SET_FD, 3 [pid 676] ioctl(3, BLKSECDISCARD, [0, 0] [pid 675] <... ioctl resumed>) = 0 [pid 674] close(4 [pid 678] <... ioctl resumed>) = 0 [pid 677] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 676] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 674] <... close resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 677] ioctl(4, LOOP_CLR_FD [pid 676] exit_group(0 [pid 674] close(3 [pid 677] <... ioctl resumed>) = 0 [pid 676] <... exit_group resumed>) = ? [pid 674] <... close resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 678] ioctl(4, LOOP_SET_FD, 3 [pid 676] +++ exited with 0 +++ [pid 675] ioctl(4, LOOP_SET_FD, 3 [pid 674] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] ioctl(3, LOOP_CLR_FD [pid 678] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 675] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 674] <... openat resumed>) = 3 [pid 310] <... ioctl resumed>) = 0 [pid 678] close(4 [pid 675] close(4 [pid 674] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] close(3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=676, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 678] <... close resumed>) = 0 [pid 677] ioctl(4, LOOP_SET_FD, 3 [pid 675] <... close resumed>) = 0 [pid 674] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] <... close resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 678] close(3 [pid 677] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 675] close(3 [pid 674] exit_group(0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 678] <... close resumed>) = 0 [pid 677] close(4 [pid 674] <... exit_group resumed>) = ? [pid 305] <... restart_syscall resumed>) = 0 [pid 678] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 675] <... close resumed>) = 0 [pid 674] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=674, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 678] <... openat resumed>) = 3 [pid 677] <... close resumed>) = 0 [pid 675] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 679 [pid 678] ioctl(3, BLKSECDISCARD, [0, 0] [pid 677] close(3 [pid 675] <... openat resumed>) = 3 [pid 678] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 678] exit_group(0) = ? [pid 678] +++ exited with 0 +++ [pid 677] <... close resumed>) = 0 [pid 675] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 677] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 675] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=678, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] <... openat resumed>) = 3 [pid 677] <... openat resumed>) = 3 [pid 675] exit_group(0 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 308] ioctl(3, LOOP_CLR_FD [pid 305] <... openat resumed>) = 3 [pid 677] ioctl(3, BLKSECDISCARD, [0, 0] [pid 675] <... exit_group resumed>) = ? [pid 309] <... restart_syscall resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 677] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) ./strace-static-x86_64: Process 679 attached [pid 679] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 675] +++ exited with 0 +++ [pid 308] close(3 [pid 305] <... ioctl resumed>) = 0 [pid 677] exit_group(0 [pid 308] <... close resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=675, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] close(3 [pid 677] <... exit_group resumed>) = ? [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 305] <... close resumed>) = 0 [pid 677] +++ exited with 0 +++ [pid 309] <... openat resumed>) = 3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=677, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 306] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 306] ioctl(3, LOOP_CLR_FD [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] <... ioctl resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 680 [pid 307] <... restart_syscall resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 306] close(3) = 0 [pid 309] close(3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 681 [pid 309] <... close resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] ioctl(3, LOOP_CLR_FD [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 682 [pid 307] <... ioctl resumed>) = 0 [pid 679] setpgid(0, 0 [pid 307] close(3 [pid 679] <... setpgid resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 679] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 683 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 679] <... openat resumed>) = 3 ./strace-static-x86_64: Process 684 attached ./strace-static-x86_64: Process 681 attached ./strace-static-x86_64: Process 680 attached [pid 679] write(3, "1000", 4 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 684 [pid 681] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 680] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 679] <... write resumed>) = 4 [pid 684] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 681] <... prctl resumed>) = 0 [pid 680] <... prctl resumed>) = 0 [pid 679] close(3 [pid 684] setpgid(0, 0 [pid 681] setpgid(0, 0 [pid 680] setpgid(0, 0 [pid 679] <... close resumed>) = 0 [pid 684] <... setpgid resumed>) = 0 [pid 681] <... setpgid resumed>) = 0 [pid 680] <... setpgid resumed>) = 0 [pid 679] memfd_create("syzkaller", 0) = 3 [pid 679] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 681] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 680] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 679] 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 684] <... openat resumed>) = 3 [pid 681] <... openat resumed>) = 3 [pid 680] <... openat resumed>) = 3 [pid 679] <... write resumed>) = 262144 [pid 684] write(3, "1000", 4 [pid 681] write(3, "1000", 4 [pid 680] write(3, "1000", 4./strace-static-x86_64: Process 683 attached [pid 684] <... write resumed>) = 4 [pid 681] <... write resumed>) = 4 [pid 680] <... write resumed>) = 4 ./strace-static-x86_64: Process 682 attached [pid 684] close(3 [pid 683] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 681] close(3 [pid 680] close(3 [pid 684] <... close resumed>) = 0 [pid 681] <... close resumed>) = 0 [pid 680] <... close resumed>) = 0 [pid 684] memfd_create("syzkaller", 0 [pid 683] <... prctl resumed>) = 0 [pid 682] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 681] memfd_create("syzkaller", 0 [pid 680] memfd_create("syzkaller", 0 [pid 684] <... memfd_create resumed>) = 3 [pid 683] setpgid(0, 0 [pid 682] <... prctl resumed>) = 0 [pid 681] <... memfd_create resumed>) = 3 [pid 679] munmap(0x7f7bfe3d8000, 262144 [pid 684] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 683] <... setpgid resumed>) = 0 [pid 682] setpgid(0, 0 [pid 681] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 680] <... memfd_create resumed>) = 3 [pid 679] <... munmap resumed>) = 0 [pid 684] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 683] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 682] <... setpgid resumed>) = 0 [pid 681] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 680] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 679] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 683] <... openat resumed>) = 3 [pid 682] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 679] <... openat resumed>) = 4 [pid 683] write(3, "1000", 4 [pid 682] <... openat resumed>) = 3 [pid 679] ioctl(4, LOOP_SET_FD, 3 [pid 683] <... write resumed>) = 4 [pid 682] write(3, "1000", 4 [pid 679] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 684] 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 683] close(3 [pid 682] <... write resumed>) = 4 [pid 679] ioctl(4, LOOP_CLR_FD [pid 683] <... close resumed>) = 0 [pid 682] close(3 [pid 679] <... ioctl resumed>) = 0 [pid 683] memfd_create("syzkaller", 0 [pid 682] <... close resumed>) = 0 [pid 683] <... memfd_create resumed>) = 3 [pid 682] memfd_create("syzkaller", 0 [pid 683] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 682] <... memfd_create resumed>) = 3 [pid 681] 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 680] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 683] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 682] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 683] 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 682] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 684] <... write resumed>) = 262144 [pid 682] 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 681] <... write resumed>) = 262144 [pid 680] 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 679] ioctl(4, LOOP_SET_FD, 3 [pid 682] <... write resumed>) = 262144 [pid 679] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 684] munmap(0x7f7bfe3d8000, 262144 [pid 683] <... write resumed>) = 262144 [pid 681] munmap(0x7f7bfe3d8000, 262144 [pid 680] <... write resumed>) = 262144 [pid 679] close(4 [pid 684] <... munmap resumed>) = 0 [pid 683] munmap(0x7f7bfe3d8000, 262144 [pid 682] munmap(0x7f7bfe3d8000, 262144 [pid 679] <... close resumed>) = 0 [pid 684] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 683] <... munmap resumed>) = 0 [pid 682] <... munmap resumed>) = 0 [pid 681] <... munmap resumed>) = 0 [pid 680] munmap(0x7f7bfe3d8000, 262144 [pid 679] close(3 [pid 684] <... openat resumed>) = 4 [pid 683] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 682] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 681] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 680] <... munmap resumed>) = 0 [pid 679] <... close resumed>) = 0 [pid 684] ioctl(4, LOOP_SET_FD, 3 [pid 683] <... openat resumed>) = 4 [pid 682] <... openat resumed>) = 4 [pid 681] <... openat resumed>) = 4 [pid 680] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 679] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 684] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 683] ioctl(4, LOOP_SET_FD, 3 [pid 682] ioctl(4, LOOP_SET_FD, 3 [pid 681] ioctl(4, LOOP_SET_FD, 3 [pid 680] <... openat resumed>) = 4 [pid 679] <... openat resumed>) = 3 [pid 684] ioctl(4, LOOP_CLR_FD [pid 683] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 682] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 681] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 680] ioctl(4, LOOP_SET_FD, 3 [pid 679] ioctl(3, BLKSECDISCARD, [0, 0] [pid 684] <... ioctl resumed>) = 0 [pid 683] ioctl(4, LOOP_CLR_FD [pid 682] ioctl(4, LOOP_CLR_FD [pid 681] ioctl(4, LOOP_CLR_FD [pid 680] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 679] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 683] <... ioctl resumed>) = 0 [pid 682] <... ioctl resumed>) = 0 [pid 681] <... ioctl resumed>) = 0 [pid 680] ioctl(4, LOOP_CLR_FD [pid 679] exit_group(0 [pid 680] <... ioctl resumed>) = 0 [pid 679] <... exit_group resumed>) = ? [pid 679] +++ exited with 0 +++ [pid 684] ioctl(4, LOOP_SET_FD, 3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=679, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 684] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 681] ioctl(4, LOOP_SET_FD, 3 [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 684] close(4 [pid 681] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 684] <... close resumed>) = 0 [pid 683] ioctl(4, LOOP_SET_FD, 3 [pid 681] close(4 [pid 310] <... restart_syscall resumed>) = 0 [pid 684] close(3 [pid 683] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 682] ioctl(4, LOOP_SET_FD, 3 [pid 681] <... close resumed>) = 0 [pid 680] ioctl(4, LOOP_SET_FD, 3 [pid 683] close(4 [pid 682] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 683] <... close resumed>) = 0 [pid 682] close(4 [pid 684] <... close resumed>) = 0 [pid 683] close(3 [pid 682] <... close resumed>) = 0 [pid 681] close(3 [pid 680] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 684] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 683] <... close resumed>) = 0 [pid 682] close(3 [pid 684] <... openat resumed>) = 3 [pid 683] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 682] <... close resumed>) = 0 [pid 681] <... close resumed>) = 0 [pid 680] close(4 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 684] ioctl(3, BLKSECDISCARD, [0, 0] [pid 683] <... openat resumed>) = 3 [pid 682] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 681] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 680] <... close resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 684] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 683] ioctl(3, BLKSECDISCARD, [0, 0] [pid 682] <... openat resumed>) = 3 [pid 681] <... openat resumed>) = 3 [pid 680] close(3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 684] exit_group(0 [pid 683] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 682] ioctl(3, BLKSECDISCARD, [0, 0] [pid 681] ioctl(3, BLKSECDISCARD, [0, 0] [pid 683] exit_group(0 [pid 682] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 683] <... exit_group resumed>) = ? [pid 682] exit_group(0 [pid 684] <... exit_group resumed>) = ? [pid 683] +++ exited with 0 +++ [pid 682] <... exit_group resumed>) = ? [pid 681] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 680] <... close resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 684] +++ exited with 0 +++ [pid 682] +++ exited with 0 +++ [pid 681] exit_group(0 [pid 680] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] close(3 [pid 681] <... exit_group resumed>) = ? [pid 680] <... openat resumed>) = 3 [pid 310] <... close resumed>) = 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=683, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=684, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=682, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 307] <... restart_syscall resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 681] +++ exited with 0 +++ [pid 680] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 680] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 309] <... openat resumed>) = 3 [pid 307] <... openat resumed>) = 3 [pid 306] <... openat resumed>) = 3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=681, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 680] exit_group(0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 685 [pid 309] ioctl(3, LOOP_CLR_FD [pid 307] ioctl(3, LOOP_CLR_FD [pid 306] ioctl(3, LOOP_CLR_FD [pid 680] <... exit_group resumed>) = ? [pid 309] <... ioctl resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 307] close(3 [pid 306] close(3 [pid 307] <... close resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 680] +++ exited with 0 +++ [pid 309] close(3) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=680, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 686 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 687 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 686 attached [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 688 [pid 305] <... openat resumed>) = 3 [pid 305] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 685 attached ) = 0 [pid 305] close(3) = 0 [pid 685] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 686] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 685] <... prctl resumed>) = 0 [pid 685] setpgid(0, 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 689 [pid 685] <... setpgid resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 685] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 685] <... openat resumed>) = 3 [pid 685] write(3, "1000", 4 [pid 308] <... close resumed>) = 0 [pid 685] <... write resumed>) = 4 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 685] close(3 [pid 686] <... prctl resumed>) = 0 [pid 686] setpgid(0, 0 [pid 685] <... close resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 690 [pid 685] memfd_create("syzkaller", 0) = 3 [pid 686] <... setpgid resumed>) = 0 [pid 686] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 685] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 687 attached [pid 687] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 685] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 686] <... openat resumed>) = 3 [pid 686] write(3, "1000", 4) = 4 [pid 686] close(3) = 0 [pid 686] memfd_create("syzkaller", 0 [pid 687] <... prctl resumed>) = 0 [pid 686] <... memfd_create resumed>) = 3 [pid 685] 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 687] setpgid(0, 0 [pid 686] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 687] <... setpgid resumed>) = 0 [pid 686] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 687] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 686] 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 687] <... openat resumed>) = 3 [pid 687] write(3, "1000", 4) = 4 [pid 687] close(3 [pid 685] <... write resumed>) = 262144 [pid 687] <... close resumed>) = 0 [pid 685] munmap(0x7f7bfe3d8000, 262144 [pid 687] memfd_create("syzkaller", 0./strace-static-x86_64: Process 688 attached ) = 3 [pid 688] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 687] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 686] <... write resumed>) = 262144 [pid 685] <... munmap resumed>) = 0 [pid 688] <... prctl resumed>) = 0 [pid 687] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 685] openat(AT_FDCWD, "/dev/loop5", O_RDWR./strace-static-x86_64: Process 689 attached [pid 688] setpgid(0, 0 [pid 689] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 688] <... setpgid resumed>) = 0 [pid 689] <... prctl resumed>) = 0 [pid 688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 689] setpgid(0, 0 [pid 688] <... openat resumed>) = 3 [pid 685] <... openat resumed>) = 4 [pid 689] <... setpgid resumed>) = 0 [pid 688] write(3, "1000", 4 [pid 687] 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 686] munmap(0x7f7bfe3d8000, 262144 [pid 685] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 690 attached [pid 689] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 688] <... write resumed>) = 4 [pid 686] <... munmap resumed>) = 0 [pid 685] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 690] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 689] <... openat resumed>) = 3 [pid 688] close(3 [pid 686] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 685] ioctl(4, LOOP_CLR_FD [pid 690] <... prctl resumed>) = 0 [pid 689] write(3, "1000", 4 [pid 688] <... close resumed>) = 0 [pid 686] <... openat resumed>) = 4 [pid 685] <... ioctl resumed>) = 0 [pid 690] setpgid(0, 0 [pid 689] <... write resumed>) = 4 [pid 688] memfd_create("syzkaller", 0 [pid 687] <... write resumed>) = 262144 [pid 686] ioctl(4, LOOP_SET_FD, 3 [pid 690] <... setpgid resumed>) = 0 [pid 689] close(3 [pid 688] <... memfd_create resumed>) = 3 [pid 687] munmap(0x7f7bfe3d8000, 262144 [pid 686] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 690] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 689] <... close resumed>) = 0 [pid 688] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 687] <... munmap resumed>) = 0 [pid 686] ioctl(4, LOOP_CLR_FD [pid 690] <... openat resumed>) = 3 [pid 689] memfd_create("syzkaller", 0 [pid 688] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 687] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 686] <... ioctl resumed>) = 0 [pid 690] write(3, "1000", 4 [pid 689] <... memfd_create resumed>) = 3 [pid 688] 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 687] <... openat resumed>) = 4 [pid 685] ioctl(4, LOOP_SET_FD, 3 [pid 690] <... write resumed>) = 4 [pid 689] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 688] <... write resumed>) = 262144 [pid 687] ioctl(4, LOOP_SET_FD, 3 [pid 685] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 690] close(3 [pid 689] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 688] munmap(0x7f7bfe3d8000, 262144 [pid 687] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 686] ioctl(4, LOOP_SET_FD, 3 [pid 685] close(4 [pid 690] <... close resumed>) = 0 [pid 689] 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 688] <... munmap resumed>) = 0 [pid 687] ioctl(4, LOOP_CLR_FD [pid 686] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 685] <... close resumed>) = 0 [pid 690] memfd_create("syzkaller", 0 [pid 689] <... write resumed>) = 262144 [pid 688] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 687] <... ioctl resumed>) = 0 [pid 686] close(4 [pid 685] close(3 [pid 690] <... memfd_create resumed>) = 3 [pid 689] munmap(0x7f7bfe3d8000, 262144 [pid 688] <... openat resumed>) = 4 [pid 686] <... close resumed>) = 0 [pid 690] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 689] <... munmap resumed>) = 0 [pid 688] ioctl(4, LOOP_SET_FD, 3 [pid 686] close(3 [pid 690] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 689] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 688] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 686] <... close resumed>) = 0 [pid 685] <... close resumed>) = 0 [pid 690] 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 689] <... openat resumed>) = 4 [pid 688] ioctl(4, LOOP_CLR_FD [pid 686] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 685] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 690] <... write resumed>) = 262144 [pid 689] ioctl(4, LOOP_SET_FD, 3 [pid 688] <... ioctl resumed>) = 0 [pid 687] ioctl(4, LOOP_SET_FD, 3 [pid 686] <... openat resumed>) = 3 [pid 685] <... openat resumed>) = 3 [pid 690] munmap(0x7f7bfe3d8000, 262144 [pid 689] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 687] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 686] ioctl(3, BLKSECDISCARD, [0, 0] [pid 685] ioctl(3, BLKSECDISCARD, [0, 0] [pid 690] <... munmap resumed>) = 0 [pid 689] ioctl(4, LOOP_CLR_FD [pid 687] close(4 [pid 686] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 685] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 690] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 689] <... ioctl resumed>) = 0 [pid 687] <... close resumed>) = 0 [pid 686] exit_group(0 [pid 685] exit_group(0 [pid 690] <... openat resumed>) = 4 [pid 688] ioctl(4, LOOP_SET_FD, 3 [pid 687] close(3 [pid 686] <... exit_group resumed>) = ? [pid 685] <... exit_group resumed>) = ? [pid 690] ioctl(4, LOOP_SET_FD, 3 [pid 688] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 687] <... close resumed>) = 0 [pid 686] +++ exited with 0 +++ [pid 690] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 689] ioctl(4, LOOP_SET_FD, 3 [pid 688] close(4 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=686, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 690] ioctl(4, LOOP_CLR_FD [pid 689] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 688] <... close resumed>) = 0 [pid 687] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 685] +++ exited with 0 +++ [pid 690] <... ioctl resumed>) = 0 [pid 689] close(4 [pid 688] close(3 [pid 687] <... openat resumed>) = 3 [pid 689] <... close resumed>) = 0 [pid 688] <... close resumed>) = 0 [pid 687] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=685, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 689] close(3 [pid 688] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 687] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 307] <... openat resumed>) = 3 [pid 689] <... close resumed>) = 0 [pid 688] <... openat resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 690] ioctl(4, LOOP_SET_FD, 3 [pid 689] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 688] ioctl(3, BLKSECDISCARD, [0, 0] [pid 687] exit_group(0 [pid 310] <... openat resumed>) = 3 [pid 307] <... ioctl resumed>) = 0 [pid 690] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 689] <... openat resumed>) = 3 [pid 688] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 687] <... exit_group resumed>) = ? [pid 310] ioctl(3, LOOP_CLR_FD [pid 307] close(3 [pid 690] close(4 [pid 689] ioctl(3, BLKSECDISCARD, [0, 0] [pid 688] exit_group(0 [pid 307] <... close resumed>) = 0 [pid 690] <... close resumed>) = 0 [pid 689] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 688] <... exit_group resumed>) = ? [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 690] close(3 [pid 689] exit_group(0 [pid 688] +++ exited with 0 +++ [pid 687] +++ exited with 0 +++ [pid 310] <... ioctl resumed>) = 0 [pid 690] <... close resumed>) = 0 [pid 689] <... exit_group resumed>) = ? [pid 310] close(3 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 691 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=687, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 690] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 689] +++ exited with 0 +++ [pid 310] <... close resumed>) = 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=688, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 690] <... openat resumed>) = 3 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=689, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 690] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 690] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] <... restart_syscall resumed>) = 0 [pid 306] <... openat resumed>) = 3 ./strace-static-x86_64: Process 691 attached [pid 690] exit_group(0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 692 [pid 306] ioctl(3, LOOP_CLR_FD [pid 691] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 690] <... exit_group resumed>) = ? [pid 306] <... ioctl resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 691] <... prctl resumed>) = 0 [pid 690] +++ exited with 0 +++ [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 306] close(3 [pid 305] <... openat resumed>) = 3 [pid 691] setpgid(0, 0 [pid 309] <... openat resumed>) = 3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=690, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... close resumed>) = 0 [pid 691] <... setpgid resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] ioctl(3, LOOP_CLR_FD [pid 691] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 309] <... ioctl resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 691] <... openat resumed>) = 3 [pid 309] close(3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 693 [pid 305] close(3 [pid 691] write(3, "1000", 4 [pid 309] <... close resumed>) = 0 [pid 308] <... openat resumed>) = 3 ./strace-static-x86_64: Process 692 attached [pid 691] <... write resumed>) = 4 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] ioctl(3, LOOP_CLR_FD [pid 305] <... close resumed>) = 0 [pid 691] close(3 [pid 308] <... ioctl resumed>) = 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 694 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 692] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 691] <... close resumed>) = 0 [pid 308] close(3./strace-static-x86_64: Process 693 attached ) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 695 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 693] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 692] <... prctl resumed>) = 0 [pid 691] memfd_create("syzkaller", 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 696 [pid 692] setpgid(0, 0 [pid 691] <... memfd_create resumed>) = 3 [pid 692] <... setpgid resumed>) = 0 [pid 691] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 692] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 691] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 693] <... prctl resumed>) = 0 [pid 693] setpgid(0, 0) = 0 ./strace-static-x86_64: Process 694 attached [pid 693] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 694] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 691] 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 692] <... openat resumed>) = 3 [pid 694] <... prctl resumed>) = 0 [pid 694] setpgid(0, 0) = 0 [pid 693] <... openat resumed>) = 3 [pid 694] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 693] write(3, "1000", 4 [pid 692] write(3, "1000", 4 [pid 691] <... write resumed>) = 262144 [pid 694] <... openat resumed>) = 3 [pid 693] <... write resumed>) = 4 [pid 692] <... write resumed>) = 4 [pid 691] munmap(0x7f7bfe3d8000, 262144 [pid 694] write(3, "1000", 4 [pid 693] close(3 [pid 691] <... munmap resumed>) = 0 [pid 692] close(3 [pid 694] <... write resumed>) = 4 [pid 693] <... close resumed>) = 0 [pid 692] <... close resumed>) = 0 [pid 691] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 694] close(3 [pid 693] memfd_create("syzkaller", 0 [pid 692] memfd_create("syzkaller", 0 [pid 691] <... openat resumed>) = 4 [pid 694] <... close resumed>) = 0 [pid 693] <... memfd_create resumed>) = 3 [pid 692] <... memfd_create resumed>) = 3 [pid 691] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 696 attached [pid 694] memfd_create("syzkaller", 0 [pid 693] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 692] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 691] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 696] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 694] <... memfd_create resumed>) = 3 [pid 693] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 692] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 691] ioctl(4, LOOP_CLR_FD./strace-static-x86_64: Process 695 attached [pid 696] <... prctl resumed>) = 0 [pid 694] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 693] 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 692] 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 691] <... ioctl resumed>) = 0 [pid 696] setpgid(0, 0 [pid 695] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 694] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 693] <... write resumed>) = 262144 [pid 692] <... write resumed>) = 262144 [pid 696] <... setpgid resumed>) = 0 [pid 695] <... prctl resumed>) = 0 [pid 694] 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 692] munmap(0x7f7bfe3d8000, 262144 [pid 696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 695] setpgid(0, 0 [pid 694] <... write resumed>) = 262144 [pid 692] <... munmap resumed>) = 0 [pid 691] ioctl(4, LOOP_SET_FD, 3 [pid 696] <... openat resumed>) = 3 [pid 695] <... setpgid resumed>) = 0 [pid 693] munmap(0x7f7bfe3d8000, 262144 [pid 692] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 691] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 696] write(3, "1000", 4 [pid 695] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 694] munmap(0x7f7bfe3d8000, 262144 [pid 693] <... munmap resumed>) = 0 [pid 692] <... openat resumed>) = 4 [pid 691] close(4 [pid 696] <... write resumed>) = 4 [pid 695] <... openat resumed>) = 3 [pid 694] <... munmap resumed>) = 0 [pid 693] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 692] ioctl(4, LOOP_SET_FD, 3 [pid 691] <... close resumed>) = 0 [pid 696] close(3 [pid 695] write(3, "1000", 4 [pid 694] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 693] <... openat resumed>) = 4 [pid 692] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 691] close(3 [pid 696] <... close resumed>) = 0 [pid 695] <... write resumed>) = 4 [pid 694] <... openat resumed>) = 4 [pid 693] ioctl(4, LOOP_SET_FD, 3 [pid 692] ioctl(4, LOOP_CLR_FD [pid 695] close(3 [pid 694] ioctl(4, LOOP_SET_FD, 3 [pid 693] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 695] <... close resumed>) = 0 [pid 694] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 693] ioctl(4, LOOP_CLR_FD [pid 696] memfd_create("syzkaller", 0 [pid 695] memfd_create("syzkaller", 0 [pid 694] ioctl(4, LOOP_CLR_FD [pid 693] <... ioctl resumed>) = 0 [pid 692] <... ioctl resumed>) = 0 [pid 691] <... close resumed>) = 0 [pid 696] <... memfd_create resumed>) = 3 [pid 695] <... memfd_create resumed>) = 3 [pid 694] <... ioctl resumed>) = 0 [pid 691] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 696] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 695] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 691] <... openat resumed>) = 3 [pid 696] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 695] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 691] ioctl(3, BLKSECDISCARD, [0, 0] [pid 696] 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 695] 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 691] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 696] <... write resumed>) = 262144 [pid 695] <... write resumed>) = 262144 [pid 694] ioctl(4, LOOP_SET_FD, 3 [pid 693] ioctl(4, LOOP_SET_FD, 3 [pid 692] ioctl(4, LOOP_SET_FD, 3 [pid 691] exit_group(0 [pid 696] munmap(0x7f7bfe3d8000, 262144 [pid 695] munmap(0x7f7bfe3d8000, 262144 [pid 694] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 693] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 692] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 691] <... exit_group resumed>) = ? [pid 696] <... munmap resumed>) = 0 [pid 695] <... munmap resumed>) = 0 [pid 694] close(4 [pid 693] close(4 [pid 692] close(4 [pid 696] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 695] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 694] <... close resumed>) = 0 [pid 693] <... close resumed>) = 0 [pid 692] <... close resumed>) = 0 [pid 691] +++ exited with 0 +++ [pid 696] <... openat resumed>) = 4 [pid 695] <... openat resumed>) = 4 [pid 694] close(3 [pid 693] close(3 [pid 692] close(3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=691, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 696] ioctl(4, LOOP_SET_FD, 3 [pid 695] ioctl(4, LOOP_SET_FD, 3 [pid 694] <... close resumed>) = 0 [pid 693] <... close resumed>) = 0 [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 695] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 694] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 693] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 307] <... restart_syscall resumed>) = 0 [pid 696] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 695] ioctl(4, LOOP_CLR_FD [pid 694] <... openat resumed>) = 3 [pid 693] <... openat resumed>) = 3 [pid 692] <... close resumed>) = 0 [pid 696] ioctl(4, LOOP_CLR_FD [pid 695] <... ioctl resumed>) = 0 [pid 694] ioctl(3, BLKSECDISCARD, [0, 0] [pid 693] ioctl(3, BLKSECDISCARD, [0, 0] [pid 692] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 696] <... ioctl resumed>) = 0 [pid 694] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 693] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 692] <... openat resumed>) = 3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 694] exit_group(0 [pid 693] exit_group(0 [pid 692] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] <... openat resumed>) = 3 [pid 694] <... exit_group resumed>) = ? [pid 693] <... exit_group resumed>) = ? [pid 692] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] ioctl(3, LOOP_CLR_FD [pid 694] +++ exited with 0 +++ [pid 693] +++ exited with 0 +++ [pid 692] exit_group(0 [pid 307] <... ioctl resumed>) = 0 [pid 696] ioctl(4, LOOP_SET_FD, 3 [pid 695] ioctl(4, LOOP_SET_FD, 3 [pid 692] <... exit_group resumed>) = ? [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=694, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] close(3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=693, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 696] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 695] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] <... close resumed>) = 0 [pid 695] close(4 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 696] close(4 [pid 695] <... close resumed>) = 0 [pid 692] +++ exited with 0 +++ [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 696] <... close resumed>) = 0 [pid 695] close(3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=692, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 697 [pid 306] <... openat resumed>) = 3 [pid 696] close(3 [pid 695] <... close resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 306] ioctl(3, LOOP_CLR_FD [pid 695] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 306] <... ioctl resumed>) = 0 [pid 695] <... openat resumed>) = 3 [pid 306] close(3 [pid 695] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] <... close resumed>) = 0 [pid 695] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 696] <... close resumed>) = 0 [pid 695] exit_group(0 [pid 309] <... openat resumed>) = 3 [pid 696] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 695] <... exit_group resumed>) = ? [pid 309] ioctl(3, LOOP_CLR_FD [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 698 [pid 696] <... openat resumed>) = 3 [pid 695] +++ exited with 0 +++ [pid 309] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 697 attached [pid 696] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] close(3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=695, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 696] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] <... close resumed>) = 0 [pid 697] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 696] exit_group(0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 697] <... prctl resumed>) = 0 [pid 696] <... exit_group resumed>) = ? [pid 310] <... openat resumed>) = 3 ./strace-static-x86_64: Process 698 attached [pid 698] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 698] setpgid(0, 0) = 0 [pid 696] +++ exited with 0 +++ [pid 697] setpgid(0, 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 699 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 310] <... ioctl resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=696, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 697] <... setpgid resumed>) = 0 [pid 310] close(3 [pid 305] <... openat resumed>) = 3 [pid 310] <... close resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 697] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 305] <... ioctl resumed>) = 0 [pid 698] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 700 [pid 308] <... openat resumed>) = 3 [pid 305] close(3 [pid 697] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 697] write(3, "1000", 4 [pid 308] <... ioctl resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 697] <... write resumed>) = 4 [pid 308] close(3 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 697] close(3 [pid 308] <... close resumed>) = 0 [pid 698] <... openat resumed>) = 3 [pid 697] <... close resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 698] write(3, "1000", 4) = 4 [pid 698] close(3 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 701 [pid 697] memfd_create("syzkaller", 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 702 [pid 697] <... memfd_create resumed>) = 3 [pid 697] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 698] <... close resumed>) = 0 [pid 697] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 698] memfd_create("syzkaller", 0) = 3 [pid 698] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 698] 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 697] 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 697] munmap(0x7f7bfe3d8000, 262144./strace-static-x86_64: Process 702 attached ) = 0 ./strace-static-x86_64: Process 699 attached [pid 697] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 699] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 697] <... openat resumed>) = 4 [pid 697] ioctl(4, LOOP_SET_FD, 3 [pid 702] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 697] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 702] <... prctl resumed>) = 0 [pid 697] ioctl(4, LOOP_CLR_FD./strace-static-x86_64: Process 701 attached [pid 702] setpgid(0, 0 [pid 699] <... prctl resumed>) = 0 [pid 697] <... ioctl resumed>) = 0 [pid 699] setpgid(0, 0 [pid 702] <... setpgid resumed>) = 0 [pid 701] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 699] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 700 attached [pid 702] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 701] <... prctl resumed>) = 0 [pid 699] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 698] <... write resumed>) = 262144 [pid 702] <... openat resumed>) = 3 [pid 701] setpgid(0, 0 [pid 700] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 699] <... openat resumed>) = 3 [pid 698] munmap(0x7f7bfe3d8000, 262144 [pid 702] write(3, "1000", 4 [pid 701] <... setpgid resumed>) = 0 [pid 700] <... prctl resumed>) = 0 [pid 699] write(3, "1000", 4 [pid 698] <... munmap resumed>) = 0 [pid 697] ioctl(4, LOOP_SET_FD, 3 [pid 702] <... write resumed>) = 4 [pid 701] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 700] setpgid(0, 0 [pid 699] <... write resumed>) = 4 [pid 698] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 697] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 702] close(3 [pid 701] <... openat resumed>) = 3 [pid 700] <... setpgid resumed>) = 0 [pid 699] close(3 [pid 698] <... openat resumed>) = 4 [pid 697] close(4 [pid 702] <... close resumed>) = 0 [pid 701] write(3, "1000", 4 [pid 700] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 699] <... close resumed>) = 0 [pid 698] ioctl(4, LOOP_SET_FD, 3 [pid 697] <... close resumed>) = 0 [pid 702] memfd_create("syzkaller", 0 [pid 701] <... write resumed>) = 4 [pid 697] close(3 [pid 702] <... memfd_create resumed>) = 3 [pid 700] <... openat resumed>) = 3 [pid 699] memfd_create("syzkaller", 0 [pid 698] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 700] write(3, "1000", 4 [pid 699] <... memfd_create resumed>) = 3 [pid 698] ioctl(4, LOOP_CLR_FD [pid 702] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 700] <... write resumed>) = 4 [pid 699] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 698] <... ioctl resumed>) = 0 [pid 701] close(3 [pid 702] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 701] <... close resumed>) = 0 [pid 700] close(3 [pid 699] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 697] <... close resumed>) = 0 [pid 702] 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 701] memfd_create("syzkaller", 0 [pid 700] <... close resumed>) = 0 [pid 699] 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 697] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 702] <... write resumed>) = 262144 [pid 701] <... memfd_create resumed>) = 3 [pid 700] memfd_create("syzkaller", 0 [pid 699] <... write resumed>) = 262144 [pid 697] <... openat resumed>) = 3 [pid 702] munmap(0x7f7bfe3d8000, 262144 [pid 701] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 700] <... memfd_create resumed>) = 3 [pid 699] munmap(0x7f7bfe3d8000, 262144 [pid 698] ioctl(4, LOOP_SET_FD, 3 [pid 697] ioctl(3, BLKSECDISCARD, [0, 0] [pid 702] <... munmap resumed>) = 0 [pid 701] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 700] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 699] <... munmap resumed>) = 0 [pid 698] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 697] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 702] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 700] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 699] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 698] close(4 [pid 702] <... openat resumed>) = 4 [pid 701] 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 700] 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 699] <... openat resumed>) = 4 [pid 698] <... close resumed>) = 0 [pid 697] exit_group(0 [pid 702] ioctl(4, LOOP_SET_FD, 3 [pid 701] <... write resumed>) = 262144 [pid 700] <... write resumed>) = 262144 [pid 699] ioctl(4, LOOP_SET_FD, 3 [pid 698] close(3 [pid 697] <... exit_group resumed>) = ? [pid 702] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 701] munmap(0x7f7bfe3d8000, 262144 [pid 700] munmap(0x7f7bfe3d8000, 262144 [pid 699] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 698] <... close resumed>) = 0 [pid 700] <... munmap resumed>) = 0 [pid 699] ioctl(4, LOOP_CLR_FD [pid 698] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 702] ioctl(4, LOOP_CLR_FD [pid 700] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 699] <... ioctl resumed>) = 0 [pid 698] <... openat resumed>) = 3 [pid 697] +++ exited with 0 +++ [pid 702] <... ioctl resumed>) = 0 [pid 701] <... munmap resumed>) = 0 [pid 700] <... openat resumed>) = 4 [pid 698] ioctl(3, BLKSECDISCARD, [0, 0] [pid 701] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 700] ioctl(4, LOOP_SET_FD, 3 [pid 698] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=697, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 701] <... openat resumed>) = 4 [pid 700] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 698] exit_group(0 [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 701] ioctl(4, LOOP_SET_FD, 3 [pid 700] ioctl(4, LOOP_CLR_FD [pid 699] ioctl(4, LOOP_SET_FD, 3 [pid 698] <... exit_group resumed>) = ? [pid 307] <... restart_syscall resumed>) = 0 [pid 702] ioctl(4, LOOP_SET_FD, 3 [pid 701] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 700] <... ioctl resumed>) = 0 [pid 699] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 698] +++ exited with 0 +++ [pid 702] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 701] ioctl(4, LOOP_CLR_FD [pid 699] close(4 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=698, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 702] close(4 [pid 701] <... ioctl resumed>) = 0 [pid 699] <... close resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 702] <... close resumed>) = 0 [pid 699] close(3 [pid 307] <... openat resumed>) = 3 [pid 702] close(3 [pid 699] <... close resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 700] ioctl(4, LOOP_SET_FD, 3 [pid 699] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 307] <... ioctl resumed>) = 0 [pid 700] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 699] <... openat resumed>) = 3 [pid 307] close(3 [pid 700] close(4 [pid 699] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] <... close resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 702] <... close resumed>) = 0 [pid 701] ioctl(4, LOOP_SET_FD, 3 [pid 700] <... close resumed>) = 0 [pid 699] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] <... openat resumed>) = 3 [pid 702] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 701] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 700] close(3 [pid 699] exit_group(0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 702] <... openat resumed>) = 3 [pid 701] close(4 [pid 700] <... close resumed>) = 0 [pid 699] <... exit_group resumed>) = ? [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 703 [pid 306] <... ioctl resumed>) = 0 [pid 702] ioctl(3, BLKSECDISCARD, [0, 0] [pid 701] <... close resumed>) = 0 [pid 700] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 699] +++ exited with 0 +++ [pid 306] close(3 [pid 702] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 701] close(3 [pid 700] <... openat resumed>) = 3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=699, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... close resumed>) = 0 [pid 702] exit_group(0 [pid 700] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 700] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) ./strace-static-x86_64: Process 703 attached [pid 702] <... exit_group resumed>) = ? [pid 701] <... close resumed>) = 0 [pid 700] exit_group(0 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 704 [pid 700] <... exit_group resumed>) = ? [pid 703] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 702] +++ exited with 0 +++ [pid 701] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 700] +++ exited with 0 +++ [pid 309] <... restart_syscall resumed>) = 0 [pid 701] <... openat resumed>) = 3 [pid 703] <... prctl resumed>) = 0 [pid 701] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=700, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 703] setpgid(0, 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=702, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 703] <... setpgid resumed>) = 0 [pid 701] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 701] exit_group(0 [pid 310] <... openat resumed>) = 3 [pid 309] <... openat resumed>) = 3 [pid 701] <... exit_group resumed>) = ? [pid 310] ioctl(3, LOOP_CLR_FD [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] <... openat resumed>) = 3 ./strace-static-x86_64: Process 704 attached [pid 704] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 701] +++ exited with 0 +++ [pid 310] <... ioctl resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 703] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 310] close(3 [pid 309] close(3 [pid 308] <... ioctl resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=701, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] <... close resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 308] close(3 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] <... close resumed>) = 0 [pid 704] <... prctl resumed>) = 0 [pid 704] setpgid(0, 0) = 0 [pid 704] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 705 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 703] <... openat resumed>) = 3 [pid 704] <... openat resumed>) = 3 [pid 703] write(3, "1000", 4 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 706 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 707 [pid 305] <... openat resumed>) = 3 [pid 703] <... write resumed>) = 4 [pid 305] ioctl(3, LOOP_CLR_FD [pid 703] close(3 [pid 305] <... ioctl resumed>) = 0 [pid 703] <... close resumed>) = 0 [pid 305] close(3 [pid 703] memfd_create("syzkaller", 0 [pid 305] <... close resumed>) = 0 [pid 703] <... memfd_create resumed>) = 3 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 704] write(3, "1000", 4 [pid 703] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 708 [pid 704] <... write resumed>) = 4 [pid 704] close(3) = 0 [pid 704] memfd_create("syzkaller", 0) = 3 [pid 704] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 703] 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 704] 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 706 attached ./strace-static-x86_64: Process 705 attached [pid 703] <... write resumed>) = 262144 [pid 705] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 703] munmap(0x7f7bfe3d8000, 262144 [pid 705] <... prctl resumed>) = 0 [pid 706] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 705] setpgid(0, 0./strace-static-x86_64: Process 707 attached [pid 706] <... prctl resumed>) = 0 [pid 705] <... setpgid resumed>) = 0 [pid 703] <... munmap resumed>) = 0 [pid 707] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 706] setpgid(0, 0 [pid 705] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 703] openat(AT_FDCWD, "/dev/loop2", O_RDWR./strace-static-x86_64: Process 708 attached [pid 707] <... prctl resumed>) = 0 [pid 706] <... setpgid resumed>) = 0 [pid 705] <... openat resumed>) = 3 [pid 703] <... openat resumed>) = 4 [pid 708] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 707] setpgid(0, 0 [pid 706] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 705] write(3, "1000", 4 [pid 704] <... write resumed>) = 262144 [pid 703] ioctl(4, LOOP_SET_FD, 3 [pid 708] <... prctl resumed>) = 0 [pid 707] <... setpgid resumed>) = 0 [pid 706] <... openat resumed>) = 3 [pid 705] <... write resumed>) = 4 [pid 703] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 708] setpgid(0, 0 [pid 707] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 706] write(3, "1000", 4 [pid 705] close(3 [pid 704] munmap(0x7f7bfe3d8000, 262144 [pid 703] ioctl(4, LOOP_CLR_FD [pid 708] <... setpgid resumed>) = 0 [pid 707] <... openat resumed>) = 3 [pid 706] <... write resumed>) = 4 [pid 705] <... close resumed>) = 0 [pid 704] <... munmap resumed>) = 0 [pid 703] <... ioctl resumed>) = 0 [pid 708] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 707] write(3, "1000", 4 [pid 708] <... openat resumed>) = 3 [pid 706] close(3 [pid 705] memfd_create("syzkaller", 0 [pid 704] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 708] write(3, "1000", 4 [pid 707] <... write resumed>) = 4 [pid 706] <... close resumed>) = 0 [pid 708] <... write resumed>) = 4 [pid 707] close(3 [pid 706] memfd_create("syzkaller", 0 [pid 705] <... memfd_create resumed>) = 3 [pid 704] <... openat resumed>) = 4 [pid 708] close(3 [pid 707] <... close resumed>) = 0 [pid 706] <... memfd_create resumed>) = 3 [pid 705] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 704] ioctl(4, LOOP_SET_FD, 3 [pid 708] <... close resumed>) = 0 [pid 707] memfd_create("syzkaller", 0 [pid 706] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 705] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 704] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 707] <... memfd_create resumed>) = 3 [pid 706] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 704] ioctl(4, LOOP_CLR_FD [pid 703] ioctl(4, LOOP_SET_FD, 3 [pid 708] memfd_create("syzkaller", 0 [pid 707] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 706] 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 705] 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 704] <... ioctl resumed>) = 0 [pid 703] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 708] <... memfd_create resumed>) = 3 [pid 707] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 706] <... write resumed>) = 262144 [pid 705] <... write resumed>) = 262144 [pid 703] close(4 [pid 708] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 707] 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 706] munmap(0x7f7bfe3d8000, 262144 [pid 705] munmap(0x7f7bfe3d8000, 262144 [pid 703] <... close resumed>) = 0 [pid 708] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 707] <... write resumed>) = 262144 [pid 706] <... munmap resumed>) = 0 [pid 705] <... munmap resumed>) = 0 [pid 703] close(3 [pid 707] munmap(0x7f7bfe3d8000, 262144 [pid 706] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 704] ioctl(4, LOOP_SET_FD, 3 [pid 707] <... munmap resumed>) = 0 [pid 706] <... openat resumed>) = 4 [pid 704] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 707] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 706] ioctl(4, LOOP_SET_FD, 3 [pid 704] close(4 [pid 708] 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 707] <... openat resumed>) = 4 [pid 706] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 704] <... close resumed>) = 0 [pid 707] ioctl(4, LOOP_SET_FD, 3 [pid 706] ioctl(4, LOOP_CLR_FD [pid 704] close(3 [pid 707] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 706] <... ioctl resumed>) = 0 [pid 705] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 704] <... close resumed>) = 0 [pid 703] <... close resumed>) = 0 [pid 707] ioctl(4, LOOP_CLR_FD [pid 704] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 707] <... ioctl resumed>) = 0 [pid 704] <... openat resumed>) = 3 [pid 708] <... write resumed>) = 262144 [pid 708] munmap(0x7f7bfe3d8000, 262144 [pid 705] <... openat resumed>) = 4 [pid 704] ioctl(3, BLKSECDISCARD, [0, 0] [pid 703] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 708] <... munmap resumed>) = 0 [pid 705] ioctl(4, LOOP_SET_FD, 3 [pid 704] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 708] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 705] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 704] exit_group(0 [pid 703] <... openat resumed>) = 3 [pid 708] <... openat resumed>) = 4 [pid 706] ioctl(4, LOOP_SET_FD, 3 [pid 705] ioctl(4, LOOP_CLR_FD [pid 704] <... exit_group resumed>) = ? [pid 703] ioctl(3, BLKSECDISCARD, [0, 0] [pid 708] ioctl(4, LOOP_SET_FD, 3 [pid 707] ioctl(4, LOOP_SET_FD, 3 [pid 706] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 705] <... ioctl resumed>) = 0 [pid 704] +++ exited with 0 +++ [pid 703] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 708] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 707] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 706] close(4 [pid 708] ioctl(4, LOOP_CLR_FD [pid 707] close(4 [pid 706] <... close resumed>) = 0 [pid 703] exit_group(0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=704, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 708] <... ioctl resumed>) = 0 [pid 707] <... close resumed>) = 0 [pid 706] close(3 [pid 703] <... exit_group resumed>) = ? [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 707] close(3 [pid 706] <... close resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 707] <... close resumed>) = 0 [pid 706] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 705] ioctl(4, LOOP_SET_FD, 3 [pid 703] +++ exited with 0 +++ [pid 306] ioctl(3, LOOP_CLR_FD [pid 707] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 706] <... openat resumed>) = 3 [pid 705] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... ioctl resumed>) = 0 [pid 708] ioctl(4, LOOP_SET_FD, 3 [pid 707] <... openat resumed>) = 3 [pid 706] ioctl(3, BLKSECDISCARD, [0, 0] [pid 705] close(4 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=703, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] close(3 [pid 708] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 707] ioctl(3, BLKSECDISCARD, [0, 0] [pid 706] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 705] <... close resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] <... close resumed>) = 0 [pid 708] close(4 [pid 707] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 706] exit_group(0 [pid 705] close(3 [pid 307] <... openat resumed>) = 3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 708] <... close resumed>) = 0 [pid 707] exit_group(0 [pid 706] <... exit_group resumed>) = ? [pid 307] ioctl(3, LOOP_CLR_FD [pid 708] close(3 [pid 707] <... exit_group resumed>) = ? [pid 706] +++ exited with 0 +++ [pid 705] <... close resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 709 [pid 708] <... close resumed>) = 0 [pid 707] +++ exited with 0 +++ [pid 307] close(3 [pid 708] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 705] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=706, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] <... close resumed>) = 0 [pid 708] <... openat resumed>) = 3 [pid 705] <... openat resumed>) = 3 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=707, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 708] ioctl(3, BLKSECDISCARD, [0, 0] [pid 705] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] <... openat resumed>) = 3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 708] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 705] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] <... openat resumed>) = 3 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 710 [pid 708] exit_group(0 [pid 705] exit_group(0 [pid 309] <... ioctl resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 708] <... exit_group resumed>) = ? [pid 705] <... exit_group resumed>) = ? [pid 309] close(3 [pid 308] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 709 attached [pid 709] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 708] +++ exited with 0 +++ [pid 709] <... prctl resumed>) = 0 [pid 709] setpgid(0, 0) = 0 [pid 705] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=705, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] <... close resumed>) = 0 [pid 308] close(3 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] <... close resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=708, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 709] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 711 [pid 709] <... openat resumed>) = 3 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 712 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 305] close(3) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] <... openat resumed>) = 3 [pid 709] write(3, "1000", 4) = 4 [pid 709] close(3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 713 [pid 310] <... close resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 709] <... close resumed>) = 0 [pid 709] memfd_create("syzkaller", 0) = 3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 714 [pid 709] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 714 attached ./strace-static-x86_64: Process 712 attached ./strace-static-x86_64: Process 710 attached ) = 0x7f7bfe3d8000 [pid 714] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 712] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 710] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 714] <... prctl resumed>) = 0 [pid 712] <... prctl resumed>) = 0 [pid 710] <... prctl resumed>) = 0 [pid 714] setpgid(0, 0 [pid 712] setpgid(0, 0 [pid 710] setpgid(0, 0 [pid 714] <... setpgid resumed>) = 0 [pid 712] <... setpgid resumed>) = 0 [pid 710] <... setpgid resumed>) = 0 [pid 714] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 710] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 714] <... openat resumed>) = 3 [pid 712] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 709] 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 714] write(3, "1000", 4 [pid 712] <... openat resumed>) = 3 [pid 710] <... openat resumed>) = 3 [pid 714] <... write resumed>) = 4 [pid 712] write(3, "1000", 4 [pid 710] write(3, "1000", 4 [pid 714] close(3 [pid 712] <... write resumed>) = 4 [pid 710] <... write resumed>) = 4 [pid 709] <... write resumed>) = 262144 ./strace-static-x86_64: Process 713 attached [pid 714] <... close resumed>) = 0 [pid 712] close(3 [pid 710] close(3./strace-static-x86_64: Process 711 attached [pid 714] memfd_create("syzkaller", 0 [pid 713] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 712] <... close resumed>) = 0 [pid 710] <... close resumed>) = 0 [pid 714] <... memfd_create resumed>) = 3 [pid 714] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 713] <... prctl resumed>) = 0 [pid 712] memfd_create("syzkaller", 0 [pid 711] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 710] memfd_create("syzkaller", 0 [pid 709] munmap(0x7f7bfe3d8000, 262144 [pid 714] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 713] setpgid(0, 0 [pid 712] <... memfd_create resumed>) = 3 [pid 711] <... prctl resumed>) = 0 [pid 710] <... memfd_create resumed>) = 3 [pid 709] <... munmap resumed>) = 0 [pid 713] <... setpgid resumed>) = 0 [pid 711] setpgid(0, 0 [pid 709] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 713] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 711] <... setpgid resumed>) = 0 [pid 709] <... openat resumed>) = 4 [pid 713] <... openat resumed>) = 3 [pid 711] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 709] ioctl(4, LOOP_SET_FD, 3 [pid 714] 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 713] write(3, "1000", 4 [pid 712] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 711] <... openat resumed>) = 3 [pid 710] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 709] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 713] <... write resumed>) = 4 [pid 711] write(3, "1000", 4 [pid 713] close(3 [pid 711] <... write resumed>) = 4 [pid 709] ioctl(4, LOOP_CLR_FD [pid 713] <... close resumed>) = 0 [pid 711] close(3 [pid 709] <... ioctl resumed>) = 0 [pid 713] memfd_create("syzkaller", 0 [pid 711] <... close resumed>) = 0 [pid 714] <... write resumed>) = 262144 [pid 713] <... memfd_create resumed>) = 3 [pid 712] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 711] memfd_create("syzkaller", 0 [pid 710] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 714] munmap(0x7f7bfe3d8000, 262144 [pid 713] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 711] <... memfd_create resumed>) = 3 [pid 713] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 711] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 713] 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 712] 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 711] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 714] <... munmap resumed>) = 0 [pid 713] <... write resumed>) = 262144 [pid 712] <... write resumed>) = 262144 [pid 711] 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 710] 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 709] ioctl(4, LOOP_SET_FD, 3 [pid 714] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 712] munmap(0x7f7bfe3d8000, 262144 [pid 711] <... write resumed>) = 262144 [pid 710] <... write resumed>) = 262144 [pid 709] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 714] <... openat resumed>) = 4 [pid 713] munmap(0x7f7bfe3d8000, 262144 [pid 710] munmap(0x7f7bfe3d8000, 262144 [pid 709] close(4 [pid 714] ioctl(4, LOOP_SET_FD, 3 [pid 713] <... munmap resumed>) = 0 [pid 712] <... munmap resumed>) = 0 [pid 711] munmap(0x7f7bfe3d8000, 262144 [pid 710] <... munmap resumed>) = 0 [pid 709] <... close resumed>) = 0 [pid 714] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 713] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 712] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 711] <... munmap resumed>) = 0 [pid 710] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 709] close(3 [pid 714] ioctl(4, LOOP_CLR_FD [pid 713] <... openat resumed>) = 4 [pid 712] <... openat resumed>) = 4 [pid 711] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 710] <... openat resumed>) = 4 [pid 709] <... close resumed>) = 0 [pid 714] <... ioctl resumed>) = 0 [pid 713] ioctl(4, LOOP_SET_FD, 3 [pid 712] ioctl(4, LOOP_SET_FD, 3 [pid 711] <... openat resumed>) = 4 [pid 710] ioctl(4, LOOP_SET_FD, 3 [pid 709] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 713] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 712] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 711] ioctl(4, LOOP_SET_FD, 3 [pid 710] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 709] <... openat resumed>) = 3 [pid 713] ioctl(4, LOOP_CLR_FD [pid 712] ioctl(4, LOOP_CLR_FD [pid 711] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 710] ioctl(4, LOOP_CLR_FD [pid 709] ioctl(3, BLKSECDISCARD, [0, 0] [pid 713] <... ioctl resumed>) = 0 [pid 712] <... ioctl resumed>) = 0 [pid 711] ioctl(4, LOOP_CLR_FD [pid 710] <... ioctl resumed>) = 0 [pid 709] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 711] <... ioctl resumed>) = 0 [pid 709] exit_group(0) = ? [pid 714] ioctl(4, LOOP_SET_FD, 3 [pid 709] +++ exited with 0 +++ [pid 714] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 712] ioctl(4, LOOP_SET_FD, 3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=709, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 714] close(4 [pid 713] ioctl(4, LOOP_SET_FD, 3 [pid 712] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 710] ioctl(4, LOOP_SET_FD, 3 [pid 714] <... close resumed>) = 0 [pid 713] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 712] close(4 [pid 710] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 714] close(3 [pid 713] close(4 [pid 712] <... close resumed>) = 0 [pid 711] ioctl(4, LOOP_SET_FD, 3 [pid 710] close(4 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 713] <... close resumed>) = 0 [pid 711] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... openat resumed>) = 3 [pid 713] close(3 [pid 711] close(4 [pid 306] ioctl(3, LOOP_CLR_FD [pid 714] <... close resumed>) = 0 [pid 712] close(3 [pid 710] <... close resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 714] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 713] <... close resumed>) = 0 [pid 712] <... close resumed>) = 0 [pid 711] <... close resumed>) = 0 [pid 710] close(3 [pid 306] close(3 [pid 714] <... openat resumed>) = 3 [pid 713] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 712] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 711] close(3 [pid 710] <... close resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 714] ioctl(3, BLKSECDISCARD, [0, 0] [pid 713] <... openat resumed>) = 3 [pid 712] <... openat resumed>) = 3 [pid 710] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 714] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 712] ioctl(3, BLKSECDISCARD, [0, 0] [pid 710] <... openat resumed>) = 3 [pid 714] exit_group(0 [pid 712] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 710] ioctl(3, BLKSECDISCARD, [0, 0] [pid 714] <... exit_group resumed>) = ? [pid 712] exit_group(0 [pid 710] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 714] +++ exited with 0 +++ [pid 713] ioctl(3, BLKSECDISCARD, [0, 0] [pid 712] <... exit_group resumed>) = ? [pid 711] <... close resumed>) = 0 [pid 710] exit_group(0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 715 [pid 713] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 712] +++ exited with 0 +++ [pid 711] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 710] <... exit_group resumed>) = ? [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=714, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 713] exit_group(0 [pid 711] <... openat resumed>) = 3 [pid 710] +++ exited with 0 +++ [pid 713] <... exit_group resumed>) = ? [pid 711] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=712, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=710, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 713] +++ exited with 0 +++ [pid 711] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 711] exit_group(0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 716 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=713, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 711] <... exit_group resumed>) = ? [pid 305] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 310] <... ioctl resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 711] +++ exited with 0 +++ [pid 310] close(3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 310] <... close resumed>) = 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=711, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 715 attached [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 305] close(3 [pid 715] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 309] <... restart_syscall resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 305] <... close resumed>) = 0 [pid 715] <... prctl resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 717 [pid 307] <... openat resumed>) = 3 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 715] setpgid(0, 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 715] <... setpgid resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] <... ioctl resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 718 [pid 715] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 309] <... openat resumed>) = 3 [pid 307] close(3 [pid 715] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 715] write(3, "1000", 4 [pid 309] <... ioctl resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 715] <... write resumed>) = 4 [pid 309] close(3 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 715] close(3 [pid 309] <... close resumed>) = 0 [pid 715] <... close resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 715] memfd_create("syzkaller", 0) = 3 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 720 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 719 [pid 715] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 ./strace-static-x86_64: Process 716 attached [pid 715] 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 720 attached ./strace-static-x86_64: Process 717 attached ) = 262144 [pid 716] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 715] munmap(0x7f7bfe3d8000, 262144 [pid 720] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 717] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 716] <... prctl resumed>) = 0 [pid 715] <... munmap resumed>) = 0 [pid 715] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 715] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 716] setpgid(0, 0 [pid 720] <... prctl resumed>) = 0 [pid 717] <... prctl resumed>) = 0 [pid 720] setpgid(0, 0 [pid 717] setpgid(0, 0 [pid 716] <... setpgid resumed>) = 0 [pid 715] ioctl(4, LOOP_CLR_FD [pid 720] <... setpgid resumed>) = 0 [pid 717] <... setpgid resumed>) = 0 [pid 716] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 715] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 719 attached [pid 719] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 719] setpgid(0, 0) = 0 [pid 719] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 716] <... openat resumed>) = 3 [pid 719] write(3, "1000", 4 [pid 717] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 716] write(3, "1000", 4 [pid 719] <... write resumed>) = 4 [pid 716] <... write resumed>) = 4 [pid 715] ioctl(4, LOOP_SET_FD, 3 [pid 719] close(3 [pid 717] <... openat resumed>) = 3 [pid 716] close(3 [pid 715] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 719] <... close resumed>) = 0 [pid 716] <... close resumed>) = 0 [pid 715] close(4 [pid 719] memfd_create("syzkaller", 0 [pid 715] <... close resumed>) = 0 [pid 716] memfd_create("syzkaller", 0 [pid 717] write(3, "1000", 4 [pid 719] <... memfd_create resumed>) = 3 [pid 715] close(3./strace-static-x86_64: Process 718 attached [pid 720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 719] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 717] <... write resumed>) = 4 [pid 716] <... memfd_create resumed>) = 3 [pid 715] <... close resumed>) = 0 [pid 720] <... openat resumed>) = 3 [pid 719] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 718] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 717] close(3 [pid 716] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 715] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 720] write(3, "1000", 4 [pid 719] 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 718] <... prctl resumed>) = 0 [pid 717] <... close resumed>) = 0 [pid 716] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 715] <... openat resumed>) = 3 [pid 719] <... write resumed>) = 262144 [pid 718] setpgid(0, 0 [pid 715] ioctl(3, BLKSECDISCARD, [0, 0] [pid 718] <... setpgid resumed>) = 0 [pid 717] memfd_create("syzkaller", 0 [pid 715] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 720] <... write resumed>) = 4 [pid 716] 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 720] close(3 [pid 717] <... memfd_create resumed>) = 3 [pid 718] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 715] exit_group(0 [pid 718] <... openat resumed>) = 3 [pid 715] <... exit_group resumed>) = ? [pid 720] <... close resumed>) = 0 [pid 718] write(3, "1000", 4 [pid 717] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 716] <... write resumed>) = 262144 [pid 715] +++ exited with 0 +++ [pid 719] munmap(0x7f7bfe3d8000, 262144 [pid 718] <... write resumed>) = 4 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=715, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 717] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 720] memfd_create("syzkaller", 0 [pid 719] <... munmap resumed>) = 0 [pid 718] close(3 [pid 716] munmap(0x7f7bfe3d8000, 262144 [pid 719] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 718] <... close resumed>) = 0 [pid 719] <... openat resumed>) = 4 [pid 718] memfd_create("syzkaller", 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 719] ioctl(4, LOOP_SET_FD, 3 [pid 718] <... memfd_create resumed>) = 3 [pid 720] <... memfd_create resumed>) = 3 [pid 306] <... openat resumed>) = 3 [pid 720] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 719] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 718] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 720] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 719] ioctl(4, LOOP_CLR_FD [pid 718] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 306] <... ioctl resumed>) = 0 [pid 719] <... ioctl resumed>) = 0 [pid 718] 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 717] 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 306] close(3 [pid 720] 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 718] <... write resumed>) = 262144 [pid 717] <... write resumed>) = 262144 [pid 306] <... close resumed>) = 0 [pid 718] munmap(0x7f7bfe3d8000, 262144 [pid 716] <... munmap resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 718] <... munmap resumed>) = 0 [pid 716] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 718] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 718] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 718] ioctl(4, LOOP_CLR_FD [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 721 [pid 716] <... openat resumed>) = 4 [pid 716] ioctl(4, LOOP_SET_FD, 3 [pid 718] <... ioctl resumed>) = 0 [pid 716] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 719] ioctl(4, LOOP_SET_FD, 3 [pid 716] ioctl(4, LOOP_CLR_FD [pid 719] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 719] close(4) = 0 [pid 719] close(3 [pid 720] <... write resumed>) = 262144 [pid 719] <... close resumed>) = 0 [pid 717] munmap(0x7f7bfe3d8000, 262144 [pid 716] <... ioctl resumed>) = 0 [pid 719] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 718] ioctl(4, LOOP_SET_FD, 3 [pid 719] <... openat resumed>) = 3 [pid 718] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 719] ioctl(3, BLKSECDISCARD, [0, 0] [pid 718] close(4 [pid 719] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 718] <... close resumed>) = 0 [pid 719] exit_group(0 [pid 718] close(3 [pid 719] <... exit_group resumed>) = ? [pid 718] <... close resumed>) = 0 [pid 719] +++ exited with 0 +++ [pid 718] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=719, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 718] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 718] exit_group(0) = ? [pid 718] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=718, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 721 attached ) = 0 [pid 721] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 721] setpgid(0, 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 721] <... setpgid resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 305] <... openat resumed>) = 3 [pid 721] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 307] ioctl(3, LOOP_CLR_FD [pid 305] ioctl(3, LOOP_CLR_FD [pid 721] <... openat resumed>) = 3 [pid 307] <... ioctl resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 721] write(3, "1000", 4 [pid 307] close(3 [pid 305] close(3 [pid 721] <... write resumed>) = 4 [pid 307] <... close resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 717] <... munmap resumed>) = 0 [pid 721] close(3 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 721] <... close resumed>) = 0 [pid 717] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 721] memfd_create("syzkaller", 0 [pid 716] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 722 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 723 [pid 721] <... memfd_create resumed>) = 3 [pid 717] <... openat resumed>) = 4 [pid 716] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 721] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 716] close(4 [pid 717] ioctl(4, LOOP_SET_FD, 3 [pid 720] munmap(0x7f7bfe3d8000, 262144 [pid 721] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 716] <... close resumed>) = 0 [pid 717] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 721] 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 720] <... munmap resumed>) = 0 [pid 717] ioctl(4, LOOP_CLR_FD [pid 716] close(3 [pid 721] <... write resumed>) = 262144 [pid 720] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 717] <... ioctl resumed>) = 0 [pid 716] <... close resumed>) = 0 [pid 716] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 720] <... openat resumed>) = 4 [pid 720] ioctl(4, LOOP_SET_FD, 3 [pid 716] <... openat resumed>) = 3 ./strace-static-x86_64: Process 722 attached [pid 720] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 716] ioctl(3, BLKSECDISCARD, [0, 0] [pid 722] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 720] ioctl(4, LOOP_CLR_FD [pid 716] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 722] <... prctl resumed>) = 0 [pid 721] munmap(0x7f7bfe3d8000, 262144 [pid 716] exit_group(0 [pid 720] <... ioctl resumed>) = 0 [pid 722] setpgid(0, 0 [pid 716] <... exit_group resumed>) = ? [pid 722] <... setpgid resumed>) = 0 [pid 721] <... munmap resumed>) = 0 [pid 717] ioctl(4, LOOP_SET_FD, 3 [pid 722] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 721] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 717] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 722] <... openat resumed>) = 3 [pid 721] <... openat resumed>) = 4 [pid 717] close(4 [pid 716] +++ exited with 0 +++ [pid 722] write(3, "1000", 4 [pid 721] ioctl(4, LOOP_SET_FD, 3 [pid 722] <... write resumed>) = 4 [pid 721] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=716, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 722] close(3 [pid 721] ioctl(4, LOOP_CLR_FD [pid 717] <... close resumed>) = 0 [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 722] <... close resumed>) = 0 [pid 721] <... ioctl resumed>) = 0 [pid 722] memfd_create("syzkaller", 0 [pid 720] ioctl(4, LOOP_SET_FD, 3 [pid 717] close(3 [pid 720] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 722] <... memfd_create resumed>) = 3 [pid 308] <... restart_syscall resumed>) = 0 [pid 722] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 722] 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 720] close(4 [pid 717] <... close resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 722] <... write resumed>) = 262144 [pid 721] ioctl(4, LOOP_SET_FD, 3 [pid 720] <... close resumed>) = 0 [pid 717] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] <... openat resumed>) = 3 [pid 721] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 720] close(3 [pid 717] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 721] close(4 [pid 308] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 723 attached [pid 721] <... close resumed>) = 0 [pid 308] close(3 [pid 723] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 721] close(3 [pid 308] <... close resumed>) = 0 [pid 723] <... prctl resumed>) = 0 [pid 721] <... close resumed>) = 0 [pid 720] <... close resumed>) = 0 [pid 717] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 723] setpgid(0, 0 [pid 722] munmap(0x7f7bfe3d8000, 262144 [pid 721] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 720] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 717] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 723] <... setpgid resumed>) = 0 [pid 722] <... munmap resumed>) = 0 [pid 721] <... openat resumed>) = 3 [pid 720] <... openat resumed>) = 3 [pid 717] exit_group(0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 724 [pid 723] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 722] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 721] ioctl(3, BLKSECDISCARD, [0, 0] [pid 720] ioctl(3, BLKSECDISCARD, [0, 0] [pid 717] <... exit_group resumed>) = ? [pid 723] <... openat resumed>) = 3 [pid 722] <... openat resumed>) = 4 [pid 721] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 720] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 723] write(3, "1000", 4 [pid 722] ioctl(4, LOOP_SET_FD, 3 [pid 721] exit_group(0 [pid 723] <... write resumed>) = 4 [pid 722] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 721] <... exit_group resumed>) = ? [pid 723] close(3 [pid 722] ioctl(4, LOOP_CLR_FD [pid 721] +++ exited with 0 +++ [pid 720] exit_group(0 [pid 717] +++ exited with 0 +++ [pid 723] <... close resumed>) = 0 [pid 722] <... ioctl resumed>) = 0 [pid 720] <... exit_group resumed>) = ? [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=717, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=721, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 723] memfd_create("syzkaller", 0) = 3 [pid 720] +++ exited with 0 +++ [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 723] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=720, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... restart_syscall resumed>) = 0 [pid 723] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 310] <... openat resumed>) = 3 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 723] 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 310] ioctl(3, LOOP_CLR_FD [pid 309] <... restart_syscall resumed>) = 0 [pid 723] <... write resumed>) = 262144 [pid 722] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... ioctl resumed>) = 0 [pid 722] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] close(3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 723] munmap(0x7f7bfe3d8000, 262144 [pid 722] close(4 [pid 310] <... close resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 306] <... openat resumed>) = 3 [pid 723] <... munmap resumed>) = 0 [pid 722] <... close resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 723] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 722] close(3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 306] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 724 attached [pid 723] <... openat resumed>) = 4 [pid 722] <... close resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 725 [pid 309] <... ioctl resumed>) = 0 [pid 306] close(3 [pid 723] ioctl(4, LOOP_SET_FD, 3 [pid 722] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] close(3 [pid 306] <... close resumed>) = 0 [pid 724] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 723] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 722] <... openat resumed>) = 3 [pid 309] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 723] ioctl(4, LOOP_CLR_FD [pid 722] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 723] <... ioctl resumed>) = 0 [pid 722] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 722] exit_group(0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 726 [pid 722] <... exit_group resumed>) = ? [pid 724] <... prctl resumed>) = 0 [pid 722] +++ exited with 0 +++ [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 727 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=722, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 724] setpgid(0, 0 [pid 723] ioctl(4, LOOP_SET_FD, 3 [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 723] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] <... restart_syscall resumed>) = 0 [pid 723] close(4) = 0 [pid 723] close(3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 724] <... setpgid resumed>) = 0 [pid 723] <... close resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 723] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 307] ioctl(3, LOOP_CLR_FD [pid 723] <... openat resumed>) = 3 [pid 307] <... ioctl resumed>) = 0 [pid 724] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 723] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] close(3 [pid 723] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] <... close resumed>) = 0 [pid 723] exit_group(0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 724] <... openat resumed>) = 3 [pid 723] <... exit_group resumed>) = ? [pid 724] write(3, "1000", 4 [pid 723] +++ exited with 0 +++ [pid 724] <... write resumed>) = 4 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 728 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=723, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 724] close(3) = 0 [pid 724] memfd_create("syzkaller", 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 728 attached ./strace-static-x86_64: Process 727 attached ./strace-static-x86_64: Process 726 attached ./strace-static-x86_64: Process 725 attached [pid 724] <... memfd_create resumed>) = 3 [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 [pid 724] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 726] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 725] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 724] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 729 [pid 726] <... prctl resumed>) = 0 [pid 725] <... prctl resumed>) = 0 [pid 726] setpgid(0, 0 [pid 725] setpgid(0, 0 [pid 726] <... setpgid resumed>) = 0 [pid 725] <... setpgid resumed>) = 0 [pid 726] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 725] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 726] <... openat resumed>) = 3 [pid 725] <... openat resumed>) = 3 [pid 726] write(3, "1000", 4 [pid 725] write(3, "1000", 4 [pid 726] <... write resumed>) = 4 [pid 725] <... write resumed>) = 4 [pid 726] close(3 [pid 725] close(3 [pid 724] 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 726] <... close resumed>) = 0 [pid 725] <... close resumed>) = 0 [pid 728] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 726] memfd_create("syzkaller", 0 [pid 725] memfd_create("syzkaller", 0 [pid 728] <... prctl resumed>) = 0 [pid 727] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 726] <... memfd_create resumed>) = 3 [pid 725] <... memfd_create resumed>) = 3 [pid 728] setpgid(0, 0 [pid 727] <... prctl resumed>) = 0 [pid 726] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 725] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 728] <... setpgid resumed>) = 0 [pid 727] setpgid(0, 0 [pid 726] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 725] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 724] <... write resumed>) = 262144 [pid 728] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 727] <... setpgid resumed>) = 0 [pid 726] 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 725] 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 729 attached [pid 728] <... openat resumed>) = 3 [pid 727] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 726] <... write resumed>) = 262144 [pid 724] munmap(0x7f7bfe3d8000, 262144 [pid 729] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 728] write(3, "1000", 4 [pid 727] <... openat resumed>) = 3 [pid 725] <... write resumed>) = 262144 [pid 724] <... munmap resumed>) = 0 [pid 728] <... write resumed>) = 4 [pid 727] write(3, "1000", 4 [pid 728] close(3 [pid 727] <... write resumed>) = 4 [pid 724] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 729] <... prctl resumed>) = 0 [pid 728] <... close resumed>) = 0 [pid 727] close(3 [pid 726] munmap(0x7f7bfe3d8000, 262144 [pid 725] munmap(0x7f7bfe3d8000, 262144 [pid 729] setpgid(0, 0 [pid 728] memfd_create("syzkaller", 0 [pid 727] <... close resumed>) = 0 [pid 726] <... munmap resumed>) = 0 [pid 725] <... munmap resumed>) = 0 [pid 724] <... openat resumed>) = 4 [pid 728] <... memfd_create resumed>) = 3 [pid 727] memfd_create("syzkaller", 0 [pid 726] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 725] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 724] ioctl(4, LOOP_SET_FD, 3 [pid 729] <... setpgid resumed>) = 0 [pid 729] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 728] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 727] <... memfd_create resumed>) = 3 [pid 726] <... openat resumed>) = 4 [pid 725] <... openat resumed>) = 4 [pid 724] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 728] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 727] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 726] ioctl(4, LOOP_SET_FD, 3 [pid 725] ioctl(4, LOOP_SET_FD, 3 [pid 729] <... openat resumed>) = 3 [pid 728] 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 727] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 726] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 725] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 724] ioctl(4, LOOP_CLR_FD [pid 729] write(3, "1000", 4 [pid 728] <... write resumed>) = 262144 [pid 727] 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 726] ioctl(4, LOOP_CLR_FD [pid 725] ioctl(4, LOOP_CLR_FD [pid 729] <... write resumed>) = 4 [pid 728] munmap(0x7f7bfe3d8000, 262144 [pid 727] <... write resumed>) = 262144 [pid 726] <... ioctl resumed>) = 0 [pid 725] <... ioctl resumed>) = 0 [pid 724] <... ioctl resumed>) = 0 [pid 729] close(3 [pid 728] <... munmap resumed>) = 0 [pid 727] munmap(0x7f7bfe3d8000, 262144 [pid 729] <... close resumed>) = 0 [pid 728] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 727] <... munmap resumed>) = 0 [pid 728] <... openat resumed>) = 4 [pid 727] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 728] ioctl(4, LOOP_SET_FD, 3 [pid 727] <... openat resumed>) = 4 [pid 729] memfd_create("syzkaller", 0 [pid 728] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 727] ioctl(4, LOOP_SET_FD, 3 [pid 728] ioctl(4, LOOP_CLR_FD [pid 727] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 726] ioctl(4, LOOP_SET_FD, 3 [pid 725] ioctl(4, LOOP_SET_FD, 3 [pid 728] <... ioctl resumed>) = 0 [pid 727] ioctl(4, LOOP_CLR_FD [pid 726] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 725] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 727] <... ioctl resumed>) = 0 [pid 726] close(4 [pid 725] close(4 [pid 729] <... memfd_create resumed>) = 3 [pid 726] <... close resumed>) = 0 [pid 725] <... close resumed>) = 0 [pid 726] close(3 [pid 725] close(3 [pid 729] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 726] <... close resumed>) = 0 [pid 725] <... close resumed>) = 0 [pid 724] ioctl(4, LOOP_SET_FD, 3 [pid 728] ioctl(4, LOOP_SET_FD, 3 [pid 727] ioctl(4, LOOP_SET_FD, 3 [pid 726] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 725] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 728] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 727] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 726] <... openat resumed>) = 3 [pid 725] <... openat resumed>) = 3 [pid 729] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 728] close(4 [pid 727] close(4 [pid 726] ioctl(3, BLKSECDISCARD, [0, 0] [pid 725] ioctl(3, BLKSECDISCARD, [0, 0] [pid 724] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 728] <... close resumed>) = 0 [pid 727] <... close resumed>) = 0 [pid 726] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 725] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 728] close(3 [pid 727] close(3 [pid 726] exit_group(0 [pid 725] exit_group(0 [pid 729] 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 728] <... close resumed>) = 0 [pid 727] <... close resumed>) = 0 [pid 726] <... exit_group resumed>) = ? [pid 725] <... exit_group resumed>) = ? [pid 724] close(4 [pid 729] <... write resumed>) = 262144 [pid 728] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 727] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 726] +++ exited with 0 +++ [pid 725] +++ exited with 0 +++ [pid 724] <... close resumed>) = 0 [pid 729] munmap(0x7f7bfe3d8000, 262144 [pid 728] <... openat resumed>) = 3 [pid 727] <... openat resumed>) = 3 [pid 724] close(3 [pid 728] ioctl(3, BLKSECDISCARD, [0, 0] [pid 727] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=725, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=726, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 728] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 727] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 728] exit_group(0 [pid 727] exit_group(0 [pid 728] <... exit_group resumed>) = ? [pid 727] <... exit_group resumed>) = ? [pid 729] <... munmap resumed>) = 0 [pid 728] +++ exited with 0 +++ [pid 727] +++ exited with 0 +++ [pid 724] <... close resumed>) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 729] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 724] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=728, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=727, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 310] <... openat resumed>) = 3 [pid 309] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 309] ioctl(3, LOOP_CLR_FD [pid 310] <... ioctl resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 310] close(3 [pid 309] close(3 [pid 310] <... close resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 729] <... openat resumed>) = 4 [pid 724] <... openat resumed>) = 3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 730 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 731 [pid 729] ioctl(4, LOOP_SET_FD, 3 [pid 724] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 729] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 730 attached [pid 724] exit_group(0 [pid 307] <... openat resumed>) = 3 [pid 306] <... openat resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 729] ioctl(4, LOOP_CLR_FD [pid 724] <... exit_group resumed>) = ? [pid 306] ioctl(3, LOOP_CLR_FD [pid 307] <... ioctl resumed>) = 0 [pid 730] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 730] setpgid(0, 0) = 0 [pid 307] close(3 [pid 729] <... ioctl resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 730] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 724] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=724, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] close(3 [pid 307] <... close resumed>) = 0 [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] <... close resumed>) = 0 [pid 730] <... openat resumed>) = 3 [pid 730] write(3, "1000", 4) = 4 [pid 730] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 730] memfd_create("syzkaller", 0 [pid 308] <... restart_syscall resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 732 [pid 308] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 733 [pid 308] close(3) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 734 [pid 730] <... memfd_create resumed>) = 3 [pid 730] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 729] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 729] close(4) = 0 [pid 729] close(3 [pid 730] 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 729] <... close resumed>) = 0 [pid 729] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 729] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) ./strace-static-x86_64: Process 732 attached [pid 732] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 729] exit_group(0 [pid 732] <... prctl resumed>) = 0 [pid 729] <... exit_group resumed>) = ? [pid 732] setpgid(0, 0) = 0 [pid 732] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 729] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=729, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] openat(AT_FDCWD, "/dev/loop0", 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=0x5555561ed5d0) = 735 [pid 730] <... write resumed>) = 262144 [pid 732] <... openat resumed>) = 3 [pid 732] write(3, "1000", 4) = 4 [pid 732] close(3) = 0 [pid 732] memfd_create("syzkaller", 0) = 3 [pid 732] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 ./strace-static-x86_64: Process 734 attached ./strace-static-x86_64: Process 733 attached [pid 730] munmap(0x7f7bfe3d8000, 262144 [pid 734] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 733] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 730] <... munmap resumed>) = 0 [pid 730] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 730] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 730] ioctl(4, LOOP_CLR_FD) = 0 [pid 734] <... prctl resumed>) = 0 [pid 733] <... prctl resumed>) = 0 [pid 734] setpgid(0, 0 [pid 733] setpgid(0, 0 [pid 732] 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 734] <... setpgid resumed>) = 0 [pid 733] <... setpgid resumed>) = 0 [pid 730] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 733] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 730] close(4) = 0 ./strace-static-x86_64: Process 731 attached [pid 734] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 733] <... openat resumed>) = 3 [pid 732] <... write resumed>) = 262144 [pid 730] close(3./strace-static-x86_64: Process 735 attached [pid 734] <... openat resumed>) = 3 [pid 733] write(3, "1000", 4 [pid 731] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 730] <... close resumed>) = 0 [pid 735] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 734] write(3, "1000", 4 [pid 733] <... write resumed>) = 4 [pid 730] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 731] <... prctl resumed>) = 0 [pid 735] <... prctl resumed>) = 0 [pid 732] munmap(0x7f7bfe3d8000, 262144 [pid 730] <... openat resumed>) = 3 [pid 735] setpgid(0, 0 [pid 734] <... write resumed>) = 4 [pid 733] close(3 [pid 732] <... munmap resumed>) = 0 [pid 731] setpgid(0, 0 [pid 730] ioctl(3, BLKSECDISCARD, [0, 0] [pid 735] <... setpgid resumed>) = 0 [pid 732] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 730] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 735] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 734] close(3 [pid 733] <... close resumed>) = 0 [pid 732] <... openat resumed>) = 4 [pid 731] <... setpgid resumed>) = 0 [pid 730] exit_group(0 [pid 735] <... openat resumed>) = 3 [pid 732] ioctl(4, LOOP_SET_FD, 3 [pid 730] <... exit_group resumed>) = ? [pid 735] write(3, "1000", 4 [pid 734] <... close resumed>) = 0 [pid 733] memfd_create("syzkaller", 0 [pid 732] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 731] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 730] +++ exited with 0 +++ [pid 735] <... write resumed>) = 4 [pid 732] ioctl(4, LOOP_CLR_FD [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=730, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 735] close(3 [pid 732] <... ioctl resumed>) = 0 [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 735] <... close resumed>) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 735] memfd_create("syzkaller", 0) = 3 [pid 735] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 735] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 310] <... openat resumed>) = 3 [pid 735] 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 734] memfd_create("syzkaller", 0 [pid 733] <... memfd_create resumed>) = 3 [pid 731] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 734] <... memfd_create resumed>) = 3 [pid 733] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 732] ioctl(4, LOOP_SET_FD, 3 [pid 731] write(3, "1000", 4 [pid 310] <... ioctl resumed>) = 0 [pid 735] <... write resumed>) = 262144 [pid 732] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] close(3 [pid 733] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 734] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 735] munmap(0x7f7bfe3d8000, 262144 [pid 732] close(4 [pid 731] <... write resumed>) = 4 [pid 310] <... close resumed>) = 0 [pid 735] <... munmap resumed>) = 0 [pid 732] <... close resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 735] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 732] close(3 [pid 735] <... openat resumed>) = 4 [pid 734] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 733] 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 732] <... close resumed>) = 0 [pid 731] close(3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 736 [pid 735] ioctl(4, LOOP_SET_FD, 3 [pid 732] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 735] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 732] <... openat resumed>) = 3 [pid 735] ioctl(4, LOOP_CLR_FD [pid 732] ioctl(3, BLKSECDISCARD, [0, 0] [pid 735] <... ioctl resumed>) = 0 [pid 732] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 732] exit_group(0) = ? [pid 734] 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 732] +++ exited with 0 +++ [pid 731] <... close resumed>) = 0 [pid 735] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 735] close(4) = 0 [pid 735] close(3) = 0 [pid 733] <... write resumed>) = 262144 [pid 731] memfd_create("syzkaller", 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=732, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 735] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 734] <... write resumed>) = 262144 [pid 733] munmap(0x7f7bfe3d8000, 262144 [pid 731] <... memfd_create resumed>) = 3 [pid 735] <... openat resumed>) = 3 [pid 731] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 735] ioctl(3, BLKSECDISCARD, [0, 0] [pid 734] munmap(0x7f7bfe3d8000, 262144 [pid 733] <... munmap resumed>) = 0 [pid 731] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 735] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 735] exit_group(0) = ? [pid 735] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=735, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 733] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 731] 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 305] restart_syscall(<... resuming interrupted clone ...> [pid 733] <... openat resumed>) = 4 [pid 305] <... restart_syscall resumed>) = 0 [pid 733] ioctl(4, LOOP_SET_FD, 3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 733] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 733] ioctl(4, LOOP_CLR_FD [pid 307] <... openat resumed>) = 3 [pid 305] <... openat resumed>) = 3 [pid 733] <... ioctl resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 305] ioctl(3, LOOP_CLR_FD [pid 307] <... ioctl resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 307] close(3 [pid 305] close(3 [pid 307] <... close resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 737 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 738 [pid 734] <... munmap resumed>) = 0 [pid 734] openat(AT_FDCWD, "/dev/loop3", O_RDWR./strace-static-x86_64: Process 736 attached [pid 733] ioctl(4, LOOP_SET_FD, 3 [pid 734] <... openat resumed>) = 4 [pid 736] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 734] ioctl(4, LOOP_SET_FD, 3 [pid 733] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 731] <... write resumed>) = 262144 [pid 736] <... prctl resumed>) = 0 [pid 736] setpgid(0, 0) = 0 [pid 736] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 733] close(4 [pid 734] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 731] munmap(0x7f7bfe3d8000, 262144 [pid 733] <... close resumed>) = 0 [pid 734] ioctl(4, LOOP_CLR_FD [pid 736] <... openat resumed>) = 3 [pid 734] <... ioctl resumed>) = 0 [pid 733] close(3 [pid 731] <... munmap resumed>) = 0 [pid 736] write(3, "1000", 4) = 4 [pid 736] close(3) = 0 [pid 736] memfd_create("syzkaller", 0) = 3 [pid 736] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 733] <... close resumed>) = 0 [pid 731] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 736] 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 733] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 731] <... openat resumed>) = 4 [pid 734] ioctl(4, LOOP_SET_FD, 3 [pid 733] <... openat resumed>) = 3 [pid 731] ioctl(4, LOOP_SET_FD, 3 [pid 734] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 734] close(4 [pid 733] ioctl(3, BLKSECDISCARD, [0, 0] [pid 731] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 734] <... close resumed>) = 0 [pid 733] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) ./strace-static-x86_64: Process 737 attached [pid 734] close(3 [pid 733] exit_group(0 [pid 731] ioctl(4, LOOP_CLR_FD [pid 737] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 737] setpgid(0, 0) = 0 [pid 737] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 736] <... write resumed>) = 262144 [pid 734] <... close resumed>) = 0 [pid 733] <... exit_group resumed>) = ? [pid 731] <... ioctl resumed>) = 0 [pid 737] <... openat resumed>) = 3 ./strace-static-x86_64: Process 738 attached [pid 736] munmap(0x7f7bfe3d8000, 262144 [pid 734] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 733] +++ exited with 0 +++ [pid 737] write(3, "1000", 4 [pid 734] <... openat resumed>) = 3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=733, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 738] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 737] <... write resumed>) = 4 [pid 736] <... munmap resumed>) = 0 [pid 734] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 738] <... prctl resumed>) = 0 [pid 737] close(3 [pid 736] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 734] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] <... restart_syscall resumed>) = 0 [pid 738] setpgid(0, 0 [pid 737] <... close resumed>) = 0 [pid 736] <... openat resumed>) = 4 [pid 734] exit_group(0 [pid 731] ioctl(4, LOOP_SET_FD, 3 [pid 738] <... setpgid resumed>) = 0 [pid 737] memfd_create("syzkaller", 0 [pid 736] ioctl(4, LOOP_SET_FD, 3 [pid 734] <... exit_group resumed>) = ? [pid 731] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 738] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 737] <... memfd_create resumed>) = 3 [pid 736] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 734] +++ exited with 0 +++ [pid 731] close(4 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 738] <... openat resumed>) = 3 [pid 737] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 736] ioctl(4, LOOP_CLR_FD [pid 731] <... close resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=734, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... openat resumed>) = 3 [pid 738] write(3, "1000", 4 [pid 737] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 736] <... ioctl resumed>) = 0 [pid 731] close(3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 738] <... write resumed>) = 4 [pid 731] <... close resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 738] close(3 [pid 737] 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 731] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 306] close(3 [pid 738] <... close resumed>) = 0 [pid 731] <... openat resumed>) = 3 [pid 308] <... openat resumed>) = 3 [pid 306] <... close resumed>) = 0 [pid 738] memfd_create("syzkaller", 0 [pid 731] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] ioctl(3, LOOP_CLR_FD [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 738] <... memfd_create resumed>) = 3 [pid 737] <... write resumed>) = 262144 [pid 736] ioctl(4, LOOP_SET_FD, 3 [pid 731] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] <... ioctl resumed>) = 0 [pid 738] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 737] munmap(0x7f7bfe3d8000, 262144 [pid 736] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 731] exit_group(0 [pid 308] close(3 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 739 [pid 738] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 737] <... munmap resumed>) = 0 [pid 736] close(4 [pid 731] <... exit_group resumed>) = ? [pid 308] <... close resumed>) = 0 [pid 736] <... close resumed>) = 0 [pid 731] +++ exited with 0 +++ [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 739 attached [pid 739] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=731, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 736] close(3 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 740 [pid 739] <... prctl resumed>) = 0 [pid 739] setpgid(0, 0) = 0 [pid 739] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 736] <... close resumed>) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 736] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 738] 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 737] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 736] <... openat resumed>) = 3 [pid 736] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 736] exit_group(0 [pid 309] <... openat resumed>) = 3 [pid 737] <... openat resumed>) = 4 [pid 736] <... exit_group resumed>) = ? [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 739] <... openat resumed>) = 3 [pid 739] write(3, "1000", 4 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 741 [pid 739] <... write resumed>) = 4 [pid 736] +++ exited with 0 +++ [pid 737] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=736, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 737] ioctl(4, LOOP_CLR_FD [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 738] <... write resumed>) = 262144 [pid 737] <... ioctl resumed>) = 0 [pid 738] munmap(0x7f7bfe3d8000, 262144 [pid 310] <... restart_syscall resumed>) = 0 [pid 739] close(3 [pid 738] <... munmap resumed>) = 0 [pid 738] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 739] <... close resumed>) = 0 [pid 738] <... openat resumed>) = 4 [pid 310] <... openat resumed>) = 3 [pid 738] ioctl(4, LOOP_SET_FD, 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 739] memfd_create("syzkaller", 0 [pid 738] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 737] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... ioctl resumed>) = 0 [pid 739] <... memfd_create resumed>) = 3 [pid 738] ioctl(4, LOOP_CLR_FD [pid 737] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] close(3 [pid 739] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 738] <... ioctl resumed>) = 0 [pid 737] close(4 [pid 310] <... close resumed>) = 0 [pid 739] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 737] <... close resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 737] close(3 [pid 739] 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 740 attached [pid 740] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 737] <... close resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 742 [pid 740] setpgid(0, 0 [pid 738] ioctl(4, LOOP_SET_FD, 3 [pid 737] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 740] <... setpgid resumed>) = 0 [pid 738] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 737] <... openat resumed>) = 3 ./strace-static-x86_64: Process 742 attached ./strace-static-x86_64: Process 741 attached [pid 740] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 738] close(4 [pid 737] ioctl(3, BLKSECDISCARD, [0, 0] [pid 742] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 741] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 740] <... openat resumed>) = 3 [pid 739] <... write resumed>) = 262144 [pid 738] <... close resumed>) = 0 [pid 737] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 742] <... prctl resumed>) = 0 [pid 741] <... prctl resumed>) = 0 [pid 740] write(3, "1000", 4 [pid 738] close(3 [pid 737] exit_group(0 [pid 741] setpgid(0, 0 [pid 740] <... write resumed>) = 4 [pid 739] munmap(0x7f7bfe3d8000, 262144 [pid 741] <... setpgid resumed>) = 0 [pid 740] close(3 [pid 741] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 740] <... close resumed>) = 0 [pid 739] <... munmap resumed>) = 0 [pid 738] <... close resumed>) = 0 [pid 737] <... exit_group resumed>) = ? [pid 742] setpgid(0, 0 [pid 741] <... openat resumed>) = 3 [pid 740] memfd_create("syzkaller", 0 [pid 739] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 738] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 742] <... setpgid resumed>) = 0 [pid 741] write(3, "1000", 4 [pid 740] <... memfd_create resumed>) = 3 [pid 739] <... openat resumed>) = 4 [pid 738] <... openat resumed>) = 3 [pid 737] +++ exited with 0 +++ [pid 742] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 741] <... write resumed>) = 4 [pid 740] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 739] ioctl(4, LOOP_SET_FD, 3 [pid 738] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=737, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 742] <... openat resumed>) = 3 [pid 741] close(3 [pid 740] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 739] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 738] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 742] write(3, "1000", 4 [pid 741] <... close resumed>) = 0 [pid 740] 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 739] ioctl(4, LOOP_CLR_FD [pid 738] exit_group(0 [pid 742] <... write resumed>) = 4 [pid 741] memfd_create("syzkaller", 0 [pid 740] <... write resumed>) = 262144 [pid 739] <... ioctl resumed>) = 0 [pid 738] <... exit_group resumed>) = ? [pid 742] close(3 [pid 741] <... memfd_create resumed>) = 3 [pid 740] munmap(0x7f7bfe3d8000, 262144 [pid 742] <... close resumed>) = 0 [pid 741] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 740] <... munmap resumed>) = 0 [pid 738] +++ exited with 0 +++ [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 742] memfd_create("syzkaller", 0 [pid 741] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 740] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 307] <... openat resumed>) = 3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=738, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 742] <... memfd_create resumed>) = 3 [pid 741] 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 740] <... openat resumed>) = 4 [pid 307] ioctl(3, LOOP_CLR_FD [pid 742] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 741] <... write resumed>) = 262144 [pid 740] ioctl(4, LOOP_SET_FD, 3 [pid 739] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... ioctl resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 742] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 741] munmap(0x7f7bfe3d8000, 262144 [pid 740] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 739] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] close(3 [pid 305] <... restart_syscall resumed>) = 0 [pid 741] <... munmap resumed>) = 0 [pid 740] ioctl(4, LOOP_CLR_FD [pid 739] close(4 [pid 307] <... close resumed>) = 0 [pid 741] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 740] <... ioctl resumed>) = 0 [pid 739] <... close resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 742] 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 741] <... openat resumed>) = 4 [pid 739] close(3 [pid 742] <... write resumed>) = 262144 [pid 741] ioctl(4, LOOP_SET_FD, 3 [pid 739] <... close resumed>) = 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 743 ./strace-static-x86_64: Process 743 attached [pid 742] munmap(0x7f7bfe3d8000, 262144 [pid 741] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 740] ioctl(4, LOOP_SET_FD, 3 [pid 739] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 743] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 742] <... munmap resumed>) = 0 [pid 741] ioctl(4, LOOP_CLR_FD [pid 740] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 739] <... openat resumed>) = 3 [pid 743] <... prctl resumed>) = 0 [pid 742] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 741] <... ioctl resumed>) = 0 [pid 740] close(4 [pid 739] ioctl(3, BLKSECDISCARD, [0, 0] [pid 305] <... openat resumed>) = 3 [pid 743] setpgid(0, 0 [pid 742] <... openat resumed>) = 4 [pid 740] <... close resumed>) = 0 [pid 739] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] ioctl(3, LOOP_CLR_FD [pid 743] <... setpgid resumed>) = 0 [pid 742] ioctl(4, LOOP_SET_FD, 3 [pid 740] close(3 [pid 739] exit_group(0 [pid 305] <... ioctl resumed>) = 0 [pid 743] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 742] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 740] <... close resumed>) = 0 [pid 739] <... exit_group resumed>) = ? [pid 743] <... openat resumed>) = 3 [pid 742] ioctl(4, LOOP_CLR_FD [pid 741] ioctl(4, LOOP_SET_FD, 3 [pid 740] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 739] +++ exited with 0 +++ [pid 305] close(3 [pid 743] write(3, "1000", 4 [pid 742] <... ioctl resumed>) = 0 [pid 741] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 740] <... openat resumed>) = 3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=739, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] <... close resumed>) = 0 [pid 743] <... write resumed>) = 4 [pid 741] close(4 [pid 740] ioctl(3, BLKSECDISCARD, [0, 0] [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 743] close(3 [pid 741] <... close resumed>) = 0 [pid 740] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 741] close(3 [pid 740] exit_group(0 [pid 743] <... close resumed>) = 0 [pid 741] <... close resumed>) = 0 [pid 740] <... exit_group resumed>) = ? [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 744 [pid 743] memfd_create("syzkaller", 0 [pid 742] ioctl(4, LOOP_SET_FD, 3 [pid 741] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 740] +++ exited with 0 +++ [pid 743] <... memfd_create resumed>) = 3 [pid 742] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 741] <... openat resumed>) = 3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=740, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 743] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 742] close(4 [pid 741] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 743] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 742] <... close resumed>) = 0 [pid 741] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] <... openat resumed>) = 3 [pid 741] exit_group(0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 741] <... exit_group resumed>) = ? [pid 306] <... ioctl resumed>) = 0 [pid 741] +++ exited with 0 +++ [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 743] 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 742] close(3 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 745 ./strace-static-x86_64: Process 744 attached [pid 744] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 744] setpgid(0, 0) = 0 [pid 743] <... write resumed>) = 262144 [pid 744] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 744] write(3, "1000", 4 [pid 742] <... close resumed>) = 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=741, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 743] munmap(0x7f7bfe3d8000, 262144 [pid 742] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 743] <... munmap resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 743] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 742] <... openat resumed>) = 3 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 743] <... openat resumed>) = 4 [pid 742] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] <... openat resumed>) = 3 [pid 308] <... openat resumed>) = 3 [pid 743] ioctl(4, LOOP_SET_FD, 3 [pid 742] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] ioctl(3, LOOP_CLR_FD [pid 743] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 742] exit_group(0 [pid 309] <... ioctl resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 743] ioctl(4, LOOP_CLR_FD [pid 742] <... exit_group resumed>) = ? [pid 309] close(3 [pid 308] close(3 [pid 743] <... ioctl resumed>) = 0 [pid 744] <... write resumed>) = 4 [pid 744] close(3) = 0 [pid 742] +++ exited with 0 +++ [pid 309] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=742, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 744] memfd_create("syzkaller", 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 744] <... memfd_create resumed>) = 3 [pid 744] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 310] <... openat resumed>) = 3 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 746 [pid 743] ioctl(4, LOOP_SET_FD, 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 747 [pid 743] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] <... ioctl resumed>) = 0 [pid 743] close(4 [pid 310] close(3./strace-static-x86_64: Process 745 attached [pid 743] <... close resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 743] close(3 [pid 744] 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 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 745] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 743] <... close resumed>) = 0 ./strace-static-x86_64: Process 747 attached [pid 745] <... prctl resumed>) = 0 [pid 743] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 748 [pid 745] setpgid(0, 0 [pid 743] <... openat resumed>) = 3 [pid 747] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 745] <... setpgid resumed>) = 0 [pid 743] ioctl(3, BLKSECDISCARD, [0, 0] [pid 747] <... prctl resumed>) = 0 [pid 745] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 743] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 743] exit_group(0 [pid 747] setpgid(0, 0 [pid 745] <... openat resumed>) = 3 [pid 743] <... exit_group resumed>) = ? [pid 744] <... write resumed>) = 262144 [pid 744] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 743] +++ exited with 0 +++ [pid 747] <... setpgid resumed>) = 0 [pid 745] write(3, "1000", 4 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=743, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 747] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 745] <... write resumed>) = 4 [pid 744] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 307] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 746 attached [pid 747] <... openat resumed>) = 3 [pid 745] close(3 [pid 744] <... openat resumed>) = 4 [pid 307] <... restart_syscall resumed>) = 0 [pid 747] write(3, "1000", 4 [pid 746] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 745] <... close resumed>) = 0 [pid 744] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 748 attached [pid 747] <... write resumed>) = 4 [pid 746] <... prctl resumed>) = 0 [pid 745] memfd_create("syzkaller", 0 [pid 744] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 748] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 747] close(3 [pid 746] setpgid(0, 0 [pid 745] <... memfd_create resumed>) = 3 [pid 744] ioctl(4, LOOP_CLR_FD [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 748] <... prctl resumed>) = 0 [pid 747] <... close resumed>) = 0 [pid 746] <... setpgid resumed>) = 0 [pid 745] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 744] <... ioctl resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 748] setpgid(0, 0 [pid 747] memfd_create("syzkaller", 0 [pid 746] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 745] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 307] ioctl(3, LOOP_CLR_FD [pid 748] <... setpgid resumed>) = 0 [pid 747] <... memfd_create resumed>) = 3 [pid 746] <... openat resumed>) = 3 [pid 307] <... ioctl resumed>) = 0 [pid 748] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 746] write(3, "1000", 4 [pid 307] close(3 [pid 748] <... openat resumed>) = 3 [pid 747] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 746] <... write resumed>) = 4 [pid 307] <... close resumed>) = 0 [pid 748] write(3, "1000", 4 [pid 747] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 746] close(3 [pid 745] 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 744] ioctl(4, LOOP_SET_FD, 3 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 748] <... write resumed>) = 4 [pid 746] <... close resumed>) = 0 [pid 744] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 748] close(3 [pid 746] memfd_create("syzkaller", 0 [pid 744] close(4 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 749 [pid 748] <... close resumed>) = 0 [pid 746] <... memfd_create resumed>) = 3 [pid 744] <... close resumed>) = 0 [pid 748] memfd_create("syzkaller", 0 [pid 746] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 744] close(3 [pid 748] <... memfd_create resumed>) = 3 [pid 747] 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 746] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 745] <... write resumed>) = 262144 [pid 744] <... close resumed>) = 0 [pid 748] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 747] <... write resumed>) = 262144 [pid 746] 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 745] munmap(0x7f7bfe3d8000, 262144 [pid 744] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000./strace-static-x86_64: Process 749 attached [pid 748] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 747] munmap(0x7f7bfe3d8000, 262144 [pid 746] <... write resumed>) = 262144 [pid 745] <... munmap resumed>) = 0 [pid 744] <... openat resumed>) = 3 [pid 748] 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 747] <... munmap resumed>) = 0 [pid 746] munmap(0x7f7bfe3d8000, 262144 [pid 745] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 744] ioctl(3, BLKSECDISCARD, [0, 0] [pid 749] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 748] <... write resumed>) = 262144 [pid 747] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 746] <... munmap resumed>) = 0 [pid 745] <... openat resumed>) = 4 [pid 744] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 749] <... prctl resumed>) = 0 [pid 748] munmap(0x7f7bfe3d8000, 262144 [pid 747] <... openat resumed>) = 4 [pid 746] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 745] ioctl(4, LOOP_SET_FD, 3 [pid 744] exit_group(0 [pid 749] setpgid(0, 0 [pid 748] <... munmap resumed>) = 0 [pid 747] ioctl(4, LOOP_SET_FD, 3 [pid 746] <... openat resumed>) = 4 [pid 745] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 744] <... exit_group resumed>) = ? [pid 749] <... setpgid resumed>) = 0 [pid 748] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 747] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 746] ioctl(4, LOOP_SET_FD, 3 [pid 745] ioctl(4, LOOP_CLR_FD [pid 744] +++ exited with 0 +++ [pid 749] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 748] <... openat resumed>) = 4 [pid 747] ioctl(4, LOOP_CLR_FD [pid 746] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 745] <... ioctl resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=744, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 749] <... openat resumed>) = 3 [pid 748] ioctl(4, LOOP_SET_FD, 3 [pid 747] <... ioctl resumed>) = 0 [pid 746] ioctl(4, LOOP_CLR_FD [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 749] write(3, "1000", 4 [pid 748] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 746] <... ioctl resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 749] <... write resumed>) = 4 [pid 748] ioctl(4, LOOP_CLR_FD [pid 749] close(3 [pid 748] <... ioctl resumed>) = 0 [pid 749] <... close resumed>) = 0 [pid 749] memfd_create("syzkaller", 0 [pid 745] ioctl(4, LOOP_SET_FD, 3 [pid 749] <... memfd_create resumed>) = 3 [pid 745] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 749] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 747] ioctl(4, LOOP_SET_FD, 3 [pid 745] close(4 [pid 749] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 747] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 746] ioctl(4, LOOP_SET_FD, 3 [pid 745] <... close resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 748] ioctl(4, LOOP_SET_FD, 3 [pid 746] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 745] close(3 [pid 749] 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 748] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 747] close(4 [pid 746] close(4 [pid 745] <... close resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 748] close(4 [pid 746] <... close resumed>) = 0 [pid 745] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 748] <... close resumed>) = 0 [pid 746] close(3 [pid 745] <... openat resumed>) = 3 [pid 749] <... write resumed>) = 262144 [pid 748] close(3 [pid 747] <... close resumed>) = 0 [pid 746] <... close resumed>) = 0 [pid 745] ioctl(3, BLKSECDISCARD, [0, 0] [pid 305] <... ioctl resumed>) = 0 [pid 749] munmap(0x7f7bfe3d8000, 262144 [pid 748] <... close resumed>) = 0 [pid 747] close(3 [pid 746] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 745] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] close(3 [pid 749] <... munmap resumed>) = 0 [pid 748] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 746] <... openat resumed>) = 3 [pid 745] exit_group(0 [pid 748] <... openat resumed>) = 3 [pid 746] ioctl(3, BLKSECDISCARD, [0, 0] [pid 745] <... exit_group resumed>) = ? [pid 749] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 748] ioctl(3, BLKSECDISCARD, [0, 0] [pid 747] <... close resumed>) = 0 [pid 746] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 745] +++ exited with 0 +++ [pid 305] <... close resumed>) = 0 [pid 749] <... openat resumed>) = 4 [pid 748] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 747] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 746] exit_group(0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=745, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 749] ioctl(4, LOOP_SET_FD, 3 [pid 748] exit_group(0 [pid 747] <... openat resumed>) = 3 [pid 746] <... exit_group resumed>) = ? [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 749] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 748] <... exit_group resumed>) = ? [pid 747] ioctl(3, BLKSECDISCARD, [0, 0] [pid 746] +++ exited with 0 +++ [pid 306] <... restart_syscall resumed>) = 0 [pid 749] ioctl(4, LOOP_CLR_FD [pid 748] +++ exited with 0 +++ [pid 747] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 749] <... ioctl resumed>) = 0 [pid 747] exit_group(0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=748, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=746, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 750 [pid 747] <... exit_group resumed>) = ? [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3 [pid 747] +++ exited with 0 +++ [pid 309] <... openat resumed>) = 3 [pid 306] <... close resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] <... ioctl resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=747, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 749] ioctl(4, LOOP_SET_FD, 3 [pid 309] close(3 [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 751 [pid 749] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] <... close resumed>) = 0 [pid 308] <... restart_syscall resumed>) = 0 [pid 749] close(4 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 749] <... close resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR./strace-static-x86_64: Process 750 attached ) = 3 [pid 749] close(3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 752 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 750] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 750] setpgid(0, 0) = 0 [pid 749] <... close resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 749] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 310] close(3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 749] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] <... close resumed>) = 0 [pid 749] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] <... ioctl resumed>) = 0 [pid 749] exit_group(0 [pid 750] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] close(3 [pid 750] <... openat resumed>) = 3 [pid 749] <... exit_group resumed>) = ? [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 753 [pid 308] <... close resumed>) = 0 [pid 750] write(3, "1000", 4) = 4 [pid 750] close(3 [pid 749] +++ exited with 0 +++ [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=749, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 307] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 754 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 751 attached [pid 751] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 755 [pid 751] <... prctl resumed>) = 0 [pid 751] setpgid(0, 0 [pid 750] <... close resumed>) = 0 [pid 751] <... setpgid resumed>) = 0 [pid 750] memfd_create("syzkaller", 0) = 3 [pid 750] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 ./strace-static-x86_64: Process 755 attached ./strace-static-x86_64: Process 754 attached [pid 751] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 755] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 754] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 751] write(3, "1000", 4 [pid 755] <... prctl resumed>) = 0 [pid 754] <... prctl resumed>) = 0 [pid 751] <... write resumed>) = 4 [pid 750] 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 755] setpgid(0, 0 [pid 754] setpgid(0, 0 [pid 751] close(3 [pid 755] <... setpgid resumed>) = 0 [pid 754] <... setpgid resumed>) = 0 [pid 751] <... close resumed>) = 0 ./strace-static-x86_64: Process 753 attached [pid 751] memfd_create("syzkaller", 0 [pid 755] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 754] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 753] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 751] <... memfd_create resumed>) = 3 [pid 755] <... openat resumed>) = 3 [pid 754] <... openat resumed>) = 3 [pid 753] <... prctl resumed>) = 0 [pid 751] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 750] <... write resumed>) = 262144 [pid 755] write(3, "1000", 4 [pid 754] write(3, "1000", 4 [pid 753] setpgid(0, 0 [pid 751] <... mmap resumed>) = 0x7f7bfe3d8000 ./strace-static-x86_64: Process 752 attached [pid 755] <... write resumed>) = 4 [pid 754] <... write resumed>) = 4 [pid 753] <... setpgid resumed>) = 0 [pid 753] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 752] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 753] <... openat resumed>) = 3 [pid 752] <... prctl resumed>) = 0 [pid 753] write(3, "1000", 4 [pid 752] setpgid(0, 0 [pid 755] close(3 [pid 754] close(3 [pid 753] <... write resumed>) = 4 [pid 752] <... setpgid resumed>) = 0 [pid 751] 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 755] <... close resumed>) = 0 [pid 754] <... close resumed>) = 0 [pid 750] munmap(0x7f7bfe3d8000, 262144 [pid 753] close(3 [pid 752] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 750] <... munmap resumed>) = 0 [pid 755] memfd_create("syzkaller", 0 [pid 754] memfd_create("syzkaller", 0 [pid 753] <... close resumed>) = 0 [pid 752] <... openat resumed>) = 3 [pid 750] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 755] <... memfd_create resumed>) = 3 [pid 754] <... memfd_create resumed>) = 3 [pid 753] memfd_create("syzkaller", 0 [pid 752] write(3, "1000", 4 [pid 750] <... openat resumed>) = 4 [pid 755] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 754] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 753] <... memfd_create resumed>) = 3 [pid 752] <... write resumed>) = 4 [pid 751] <... write resumed>) = 262144 [pid 750] ioctl(4, LOOP_SET_FD, 3 [pid 755] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 754] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 753] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 752] close(3 [pid 751] munmap(0x7f7bfe3d8000, 262144 [pid 750] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 753] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 752] <... close resumed>) = 0 [pid 750] ioctl(4, LOOP_CLR_FD [pid 753] 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 752] memfd_create("syzkaller", 0 [pid 750] <... ioctl resumed>) = 0 [pid 755] 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 754] 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 753] <... write resumed>) = 262144 [pid 752] <... memfd_create resumed>) = 3 [pid 751] <... munmap resumed>) = 0 [pid 753] munmap(0x7f7bfe3d8000, 262144 [pid 752] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 751] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 753] <... munmap resumed>) = 0 [pid 752] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 755] <... write resumed>) = 262144 [pid 753] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 752] 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 751] <... openat resumed>) = 4 [pid 755] munmap(0x7f7bfe3d8000, 262144 [pid 754] <... write resumed>) = 262144 [pid 753] <... openat resumed>) = 4 [pid 752] <... write resumed>) = 262144 [pid 751] ioctl(4, LOOP_SET_FD, 3 [pid 750] ioctl(4, LOOP_SET_FD, 3 [pid 755] <... munmap resumed>) = 0 [pid 754] munmap(0x7f7bfe3d8000, 262144 [pid 753] ioctl(4, LOOP_SET_FD, 3 [pid 752] munmap(0x7f7bfe3d8000, 262144 [pid 751] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 750] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 755] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 754] <... munmap resumed>) = 0 [pid 753] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 752] <... munmap resumed>) = 0 [pid 751] ioctl(4, LOOP_CLR_FD [pid 750] close(4 [pid 755] <... openat resumed>) = 4 [pid 754] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 753] ioctl(4, LOOP_CLR_FD [pid 752] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 751] <... ioctl resumed>) = 0 [pid 750] <... close resumed>) = 0 [pid 755] ioctl(4, LOOP_SET_FD, 3 [pid 754] <... openat resumed>) = 4 [pid 753] <... ioctl resumed>) = 0 [pid 752] <... openat resumed>) = 4 [pid 750] close(3 [pid 755] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 754] ioctl(4, LOOP_SET_FD, 3 [pid 752] ioctl(4, LOOP_SET_FD, 3 [pid 750] <... close resumed>) = 0 [pid 755] ioctl(4, LOOP_CLR_FD [pid 754] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 752] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 751] ioctl(4, LOOP_SET_FD, 3 [pid 750] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 755] <... ioctl resumed>) = 0 [pid 754] ioctl(4, LOOP_CLR_FD [pid 752] ioctl(4, LOOP_CLR_FD [pid 751] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 750] <... openat resumed>) = 3 [pid 754] <... ioctl resumed>) = 0 [pid 752] <... ioctl resumed>) = 0 [pid 751] close(4 [pid 750] ioctl(3, BLKSECDISCARD, [0, 0] [pid 753] ioctl(4, LOOP_SET_FD, 3 [pid 751] <... close resumed>) = 0 [pid 750] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 753] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 751] close(3 [pid 750] exit_group(0 [pid 753] close(4 [pid 750] <... exit_group resumed>) = ? [pid 755] ioctl(4, LOOP_SET_FD, 3 [pid 753] <... close resumed>) = 0 [pid 751] <... close resumed>) = 0 [pid 750] +++ exited with 0 +++ [pid 755] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 754] ioctl(4, LOOP_SET_FD, 3 [pid 753] close(3 [pid 752] ioctl(4, LOOP_SET_FD, 3 [pid 751] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 755] close(4 [pid 754] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 751] <... openat resumed>) = 3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=750, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 755] <... close resumed>) = 0 [pid 754] close(4 [pid 751] ioctl(3, BLKSECDISCARD, [0, 0] [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 755] close(3 [pid 754] <... close resumed>) = 0 [pid 751] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] <... openat resumed>) = 3 [pid 755] <... close resumed>) = 0 [pid 754] close(3 [pid 751] exit_group(0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 755] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 754] <... close resumed>) = 0 [pid 751] <... exit_group resumed>) = ? [pid 305] <... ioctl resumed>) = 0 [pid 755] <... openat resumed>) = 3 [pid 754] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 751] +++ exited with 0 +++ [pid 305] close(3 [pid 755] ioctl(3, BLKSECDISCARD, [0, 0] [pid 754] <... openat resumed>) = 3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=751, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] <... close resumed>) = 0 [pid 755] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 754] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 755] exit_group(0 [pid 754] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 753] <... close resumed>) = 0 [pid 752] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... restart_syscall resumed>) = 0 [pid 755] <... exit_group resumed>) = ? [pid 754] exit_group(0 [pid 753] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 752] close(4 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 756 [pid 755] +++ exited with 0 +++ [pid 754] <... exit_group resumed>) = ? [pid 752] <... close resumed>) = 0 [pid 754] +++ exited with 0 +++ [pid 753] <... openat resumed>) = 3 [pid 752] close(3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=755, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=754, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 753] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] ioctl(3, LOOP_CLR_FD [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 753] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] <... openat resumed>) = 3 [pid 306] <... ioctl resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 306] close(3 [pid 308] <... ioctl resumed>) = 0 [pid 753] exit_group(0 [pid 308] close(3 [pid 306] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 753] <... exit_group resumed>) = ? [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 758 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 757 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 757 attached [pid 307] close(3 [pid 757] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 307] <... close resumed>) = 0 [pid 752] <... close resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 757] <... prctl resumed>) = 0 [pid 757] setpgid(0, 0) = 0 [pid 757] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 757] write(3, "1000", 4 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 759 [pid 753] +++ exited with 0 +++ [pid 752] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=753, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 752] <... openat resumed>) = 3 [pid 310] <... restart_syscall resumed>) = 0 [pid 752] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 752] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 752] exit_group(0) = ? [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 760 [pid 757] <... write resumed>) = 4 [pid 757] close(3) = 0 [pid 757] memfd_create("syzkaller", 0) = 3 [pid 752] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=752, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 757] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 ./strace-static-x86_64: Process 756 attached [pid 309] <... restart_syscall resumed>) = 0 [pid 756] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 757] 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 756] <... prctl resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR./strace-static-x86_64: Process 758 attached [pid 756] setpgid(0, 0 [pid 309] <... openat resumed>) = 3 ./strace-static-x86_64: Process 760 attached [pid 758] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 756] <... setpgid resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 758] <... prctl resumed>) = 0 [pid 756] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 309] <... ioctl resumed>) = 0 [pid 760] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 758] setpgid(0, 0 [pid 756] <... openat resumed>) = 3 [pid 309] close(3 [pid 758] <... setpgid resumed>) = 0 [pid 756] write(3, "1000", 4 [pid 309] <... close resumed>) = 0 [pid 758] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 756] <... write resumed>) = 4 [pid 760] <... prctl resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 760] setpgid(0, 0 [pid 758] <... openat resumed>) = 3 [pid 756] close(3 [pid 760] <... setpgid resumed>) = 0 [pid 758] write(3, "1000", 4 [pid 756] <... close resumed>) = 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 761 ./strace-static-x86_64: Process 759 attached [pid 760] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 758] <... write resumed>) = 4 [pid 756] memfd_create("syzkaller", 0 [pid 759] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 758] close(3 [pid 756] <... memfd_create resumed>) = 3 [pid 760] <... openat resumed>) = 3 [pid 759] <... prctl resumed>) = 0 [pid 758] <... close resumed>) = 0 [pid 756] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 760] write(3, "1000", 4 [pid 759] setpgid(0, 0 [pid 758] memfd_create("syzkaller", 0 [pid 756] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 760] <... write resumed>) = 4 [pid 759] <... setpgid resumed>) = 0 [pid 758] <... memfd_create resumed>) = 3 [pid 757] <... write resumed>) = 262144 [pid 756] 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 761 attached [pid 760] close(3 [pid 759] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 758] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 757] munmap(0x7f7bfe3d8000, 262144 [pid 756] <... write resumed>) = 262144 [pid 760] <... close resumed>) = 0 [pid 759] <... openat resumed>) = 3 [pid 758] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 757] <... munmap resumed>) = 0 [pid 761] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 760] memfd_create("syzkaller", 0 [pid 759] write(3, "1000", 4 [pid 758] 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 757] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 756] munmap(0x7f7bfe3d8000, 262144 [pid 761] <... prctl resumed>) = 0 [pid 760] <... memfd_create resumed>) = 3 [pid 759] <... write resumed>) = 4 [pid 758] <... write resumed>) = 262144 [pid 757] <... openat resumed>) = 4 [pid 756] <... munmap resumed>) = 0 [pid 759] close(3 [pid 758] munmap(0x7f7bfe3d8000, 262144 [pid 757] ioctl(4, LOOP_SET_FD, 3 [pid 756] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 761] setpgid(0, 0 [pid 760] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 759] <... close resumed>) = 0 [pid 758] <... munmap resumed>) = 0 [pid 757] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 756] <... openat resumed>) = 4 [pid 761] <... setpgid resumed>) = 0 [pid 760] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 759] memfd_create("syzkaller", 0 [pid 758] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 757] ioctl(4, LOOP_CLR_FD [pid 756] ioctl(4, LOOP_SET_FD, 3 [pid 759] <... memfd_create resumed>) = 3 [pid 758] <... openat resumed>) = 4 [pid 757] <... ioctl resumed>) = 0 [pid 756] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 759] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 758] ioctl(4, LOOP_SET_FD, 3 [pid 756] ioctl(4, LOOP_CLR_FD [pid 759] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 758] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 756] <... ioctl resumed>) = 0 [pid 761] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 760] 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 759] 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 760] <... write resumed>) = 262144 [pid 759] <... write resumed>) = 262144 [pid 758] ioctl(4, LOOP_CLR_FD [pid 757] ioctl(4, LOOP_SET_FD, 3 [pid 761] <... openat resumed>) = 3 [pid 759] munmap(0x7f7bfe3d8000, 262144 [pid 758] <... ioctl resumed>) = 0 [pid 757] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 761] write(3, "1000", 4 [pid 760] munmap(0x7f7bfe3d8000, 262144 [pid 759] <... munmap resumed>) = 0 [pid 757] close(4 [pid 759] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 757] <... close resumed>) = 0 [pid 759] <... openat resumed>) = 4 [pid 757] close(3 [pid 761] <... write resumed>) = 4 [pid 760] <... munmap resumed>) = 0 [pid 759] ioctl(4, LOOP_SET_FD, 3 [pid 757] <... close resumed>) = 0 [pid 756] ioctl(4, LOOP_SET_FD, 3 [pid 759] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 758] ioctl(4, LOOP_SET_FD, 3 [pid 757] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 756] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 759] ioctl(4, LOOP_CLR_FD [pid 758] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 757] <... openat resumed>) = 3 [pid 756] close(4 [pid 761] close(3 [pid 760] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 759] <... ioctl resumed>) = 0 [pid 758] close(4 [pid 757] ioctl(3, BLKSECDISCARD, [0, 0] [pid 756] <... close resumed>) = 0 [pid 758] <... close resumed>) = 0 [pid 757] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 756] close(3 [pid 761] <... close resumed>) = 0 [pid 760] <... openat resumed>) = 4 [pid 758] close(3 [pid 757] exit_group(0 [pid 756] <... close resumed>) = 0 [pid 761] memfd_create("syzkaller", 0 [pid 760] ioctl(4, LOOP_SET_FD, 3 [pid 759] ioctl(4, LOOP_SET_FD, 3 [pid 758] <... close resumed>) = 0 [pid 757] <... exit_group resumed>) = ? [pid 756] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 761] <... memfd_create resumed>) = 3 [pid 760] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 759] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 758] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 757] +++ exited with 0 +++ [pid 756] <... openat resumed>) = 3 [pid 761] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 760] ioctl(4, LOOP_CLR_FD [pid 759] close(4 [pid 758] <... openat resumed>) = 3 [pid 756] ioctl(3, BLKSECDISCARD, [0, 0] [pid 761] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 760] <... ioctl resumed>) = 0 [pid 759] <... close resumed>) = 0 [pid 758] ioctl(3, BLKSECDISCARD, [0, 0] [pid 756] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=757, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 759] close(3 [pid 758] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 756] exit_group(0 [pid 759] <... close resumed>) = 0 [pid 758] exit_group(0 [pid 756] <... exit_group resumed>) = ? [pid 761] 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 759] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 758] <... exit_group resumed>) = ? [pid 756] +++ exited with 0 +++ [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 759] <... openat resumed>) = 3 [pid 758] +++ exited with 0 +++ [pid 759] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=758, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=756, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 759] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 761] <... write resumed>) = 262144 [pid 759] exit_group(0 [pid 306] <... restart_syscall resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 759] <... exit_group resumed>) = ? [pid 305] ioctl(3, LOOP_CLR_FD [pid 761] munmap(0x7f7bfe3d8000, 262144 [pid 760] ioctl(4, LOOP_SET_FD, 3 [pid 759] +++ exited with 0 +++ [pid 305] <... ioctl resumed>) = 0 [pid 305] close(3 [pid 760] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=759, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 761] <... munmap resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 760] close(4 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 761] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 760] <... close resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 308] ioctl(3, LOOP_CLR_FD [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 762 [pid 761] <... openat resumed>) = 4 [pid 760] close(3 [pid 308] <... ioctl resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 308] close(3) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 763 ./strace-static-x86_64: Process 763 attached [pid 760] <... close resumed>) = 0 [pid 761] ioctl(4, LOOP_SET_FD, 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 761] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 760] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 306] <... ioctl resumed>) = 0 [pid 761] ioctl(4, LOOP_CLR_FD [pid 306] close(3 [pid 760] <... openat resumed>) = 3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] <... close resumed>) = 0 [pid 761] <... ioctl resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 760] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] ioctl(3, LOOP_CLR_FD [pid 763] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 763] setpgid(0, 0) = 0 [pid 763] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 307] <... ioctl resumed>) = 0 [pid 760] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] close(3 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 764 [pid 307] <... close resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 760] exit_group(0) = ? [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 765 [pid 763] <... openat resumed>) = 3 [pid 763] write(3, "1000", 4) = 4 [pid 763] close(3) = 0 [pid 763] memfd_create("syzkaller", 0 [pid 760] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=760, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 761] ioctl(4, LOOP_SET_FD, 3 [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 761] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] <... restart_syscall resumed>) = 0 [pid 761] close(4) = 0 [pid 761] close(3 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 766 [pid 761] <... close resumed>) = 0 [pid 761] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 761] ioctl(3, BLKSECDISCARD, [0, 0] [pid 763] <... memfd_create resumed>) = 3 [pid 761] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 763] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 761] exit_group(0) = ? [pid 761] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=761, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 767 [pid 763] 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 766 attached [pid 766] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 ./strace-static-x86_64: Process 764 attached [pid 766] setpgid(0, 0 [pid 764] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 765 attached [pid 765] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 764] <... prctl resumed>) = 0 [pid 764] setpgid(0, 0 [pid 766] <... setpgid resumed>) = 0 [pid 766] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 765] <... prctl resumed>) = 0 [pid 764] <... setpgid resumed>) = 0 [pid 766] write(3, "1000", 4 [pid 765] setpgid(0, 0 [pid 764] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 765] <... setpgid resumed>) = 0 [pid 764] <... openat resumed>) = 3 [pid 765] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 764] write(3, "1000", 4 [pid 766] <... write resumed>) = 4 ./strace-static-x86_64: Process 767 attached [pid 765] <... openat resumed>) = 3 [pid 764] <... write resumed>) = 4 [pid 767] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 766] close(3 [pid 765] write(3, "1000", 4 [pid 764] close(3 [pid 763] <... write resumed>) = 262144 [pid 765] <... write resumed>) = 4 [pid 764] <... close resumed>) = 0 [pid 763] munmap(0x7f7bfe3d8000, 262144 [pid 767] <... prctl resumed>) = 0 [pid 766] <... close resumed>) = 0 [pid 765] close(3 [pid 764] memfd_create("syzkaller", 0 [pid 763] <... munmap resumed>) = 0 [pid 765] <... close resumed>) = 0 [pid 764] <... memfd_create resumed>) = 3 [pid 763] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 765] memfd_create("syzkaller", 0 [pid 764] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 763] <... openat resumed>) = 4 [pid 765] <... memfd_create resumed>) = 3 [pid 764] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 763] ioctl(4, LOOP_SET_FD, 3 [pid 765] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 764] 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 763] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 765] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 763] ioctl(4, LOOP_CLR_FD [pid 765] 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 764] <... write resumed>) = 262144 [pid 763] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 762 attached [pid 767] setpgid(0, 0 [pid 766] memfd_create("syzkaller", 0 [pid 765] <... write resumed>) = 262144 [pid 765] munmap(0x7f7bfe3d8000, 262144 [pid 767] <... setpgid resumed>) = 0 [pid 766] <... memfd_create resumed>) = 3 [pid 765] <... munmap resumed>) = 0 [pid 762] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 764] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 765] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 763] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 767] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 766] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 765] <... openat resumed>) = 4 [pid 764] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 763] close(4 [pid 762] <... prctl resumed>) = 0 [pid 765] ioctl(4, LOOP_SET_FD, 3 [pid 764] <... openat resumed>) = 4 [pid 763] <... close resumed>) = 0 [pid 766] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 765] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 764] ioctl(4, LOOP_SET_FD, 3 [pid 763] close(3 [pid 765] ioctl(4, LOOP_CLR_FD [pid 764] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 763] <... close resumed>) = 0 [pid 767] <... openat resumed>) = 3 [pid 765] <... ioctl resumed>) = 0 [pid 764] ioctl(4, LOOP_CLR_FD [pid 763] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 764] <... ioctl resumed>) = 0 [pid 763] <... openat resumed>) = 3 [pid 767] write(3, "1000", 4 [pid 766] 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 763] ioctl(3, BLKSECDISCARD, [0, 0] [pid 762] setpgid(0, 0 [pid 763] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 767] <... write resumed>) = 4 [pid 763] exit_group(0) = ? [pid 767] close(3 [pid 763] +++ exited with 0 +++ [pid 762] <... setpgid resumed>) = 0 [pid 766] <... write resumed>) = 262144 [pid 767] <... close resumed>) = 0 [pid 765] ioctl(4, LOOP_SET_FD, 3 [pid 764] ioctl(4, LOOP_SET_FD, 3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=763, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 765] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 764] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 767] memfd_create("syzkaller", 0 [pid 765] close(4 [pid 764] close(4 [pid 762] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 767] <... memfd_create resumed>) = 3 [pid 765] <... close resumed>) = 0 [pid 764] <... close resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 767] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 765] close(3 [pid 764] close(3 [pid 762] <... openat resumed>) = 3 [pid 308] <... openat resumed>) = 3 [pid 767] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 766] munmap(0x7f7bfe3d8000, 262144 [pid 765] <... close resumed>) = 0 [pid 764] <... close resumed>) = 0 [pid 762] write(3, "1000", 4 [pid 308] ioctl(3, LOOP_CLR_FD [pid 765] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 764] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] <... ioctl resumed>) = 0 [pid 765] <... openat resumed>) = 3 [pid 764] <... openat resumed>) = 3 [pid 762] <... write resumed>) = 4 [pid 308] close(3 [pid 765] ioctl(3, BLKSECDISCARD, [0, 0] [pid 764] ioctl(3, BLKSECDISCARD, [0, 0] [pid 762] close(3 [pid 308] <... close resumed>) = 0 [pid 765] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 764] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 762] <... close resumed>) = 0 [pid 767] 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 766] <... munmap resumed>) = 0 [pid 765] exit_group(0 [pid 764] exit_group(0 [pid 765] <... exit_group resumed>) = ? [pid 764] <... exit_group resumed>) = ? [pid 762] memfd_create("syzkaller", 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 768 [pid 767] <... write resumed>) = 262144 [pid 766] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 765] +++ exited with 0 +++ [pid 764] +++ exited with 0 +++ [pid 762] <... memfd_create resumed>) = 3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=765, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 762] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=764, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 766] <... openat resumed>) = 4 [pid 762] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 768 attached [pid 307] <... openat resumed>) = 3 [pid 306] <... openat resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 306] ioctl(3, LOOP_CLR_FD [pid 307] <... ioctl resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 307] close(3 [pid 306] close(3 [pid 307] <... close resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 768] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 768] setpgid(0, 0) = 0 [pid 768] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 769 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 770 [pid 768] <... openat resumed>) = 3 [pid 768] write(3, "1000", 4) = 4 [pid 768] close(3) = 0 [pid 768] memfd_create("syzkaller", 0) = 3 [pid 768] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 766] ioctl(4, LOOP_SET_FD, 3 [pid 762] 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 766] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 766] ioctl(4, LOOP_CLR_FD [pid 768] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 766] <... ioctl resumed>) = 0 [pid 762] <... write resumed>) = 262144 [pid 767] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 762] munmap(0x7f7bfe3d8000, 262144 [pid 767] openat(AT_FDCWD, "/dev/loop4", O_RDWR./strace-static-x86_64: Process 769 attached ./strace-static-x86_64: Process 770 attached [pid 768] 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 767] <... openat resumed>) = 4 [pid 766] ioctl(4, LOOP_SET_FD, 3 [pid 762] <... munmap resumed>) = 0 [pid 770] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 769] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 768] <... write resumed>) = 262144 [pid 767] ioctl(4, LOOP_SET_FD, 3 [pid 766] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 762] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 767] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 766] close(4 [pid 767] ioctl(4, LOOP_CLR_FD [pid 762] <... openat resumed>) = 4 [pid 767] <... ioctl resumed>) = 0 [pid 766] <... close resumed>) = 0 [pid 762] ioctl(4, LOOP_SET_FD, 3 [pid 766] close(3 [pid 762] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 770] <... prctl resumed>) = 0 [pid 769] <... prctl resumed>) = 0 [pid 770] setpgid(0, 0 [pid 769] setpgid(0, 0 [pid 770] <... setpgid resumed>) = 0 [pid 769] <... setpgid resumed>) = 0 [pid 768] munmap(0x7f7bfe3d8000, 262144 [pid 770] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 769] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 768] <... munmap resumed>) = 0 [pid 766] <... close resumed>) = 0 [pid 762] ioctl(4, LOOP_CLR_FD [pid 770] <... openat resumed>) = 3 [pid 769] <... openat resumed>) = 3 [pid 768] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 766] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 762] <... ioctl resumed>) = 0 [pid 766] <... openat resumed>) = 3 [pid 770] write(3, "1000", 4 [pid 769] write(3, "1000", 4 [pid 768] <... openat resumed>) = 4 [pid 766] ioctl(3, BLKSECDISCARD, [0, 0] [pid 767] ioctl(4, LOOP_SET_FD, 3 [pid 770] <... write resumed>) = 4 [pid 769] <... write resumed>) = 4 [pid 768] ioctl(4, LOOP_SET_FD, 3 [pid 770] close(3 [pid 769] close(3 [pid 768] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 770] <... close resumed>) = 0 [pid 769] <... close resumed>) = 0 [pid 768] ioctl(4, LOOP_CLR_FD [pid 767] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 766] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 770] memfd_create("syzkaller", 0 [pid 769] memfd_create("syzkaller", 0 [pid 768] <... ioctl resumed>) = 0 [pid 767] close(4 [pid 766] exit_group(0 [pid 767] <... close resumed>) = 0 [pid 766] <... exit_group resumed>) = ? [pid 762] ioctl(4, LOOP_SET_FD, 3 [pid 767] close(3 [pid 770] <... memfd_create resumed>) = 3 [pid 769] <... memfd_create resumed>) = 3 [pid 770] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 769] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 770] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 769] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 770] 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 769] 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 767] <... close resumed>) = 0 [pid 766] +++ exited with 0 +++ [pid 762] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 770] <... write resumed>) = 262144 [pid 769] <... write resumed>) = 262144 [pid 768] ioctl(4, LOOP_SET_FD, 3 [pid 767] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 762] close(4 [pid 770] munmap(0x7f7bfe3d8000, 262144 [pid 769] munmap(0x7f7bfe3d8000, 262144 [pid 768] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 767] <... openat resumed>) = 3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=766, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 770] <... munmap resumed>) = 0 [pid 769] <... munmap resumed>) = 0 [pid 768] close(4 [pid 767] ioctl(3, BLKSECDISCARD, [0, 0] [pid 762] <... close resumed>) = 0 [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 770] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 769] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 768] <... close resumed>) = 0 [pid 767] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 762] close(3 [pid 310] <... restart_syscall resumed>) = 0 [pid 770] <... openat resumed>) = 4 [pid 769] <... openat resumed>) = 4 [pid 768] close(3 [pid 767] exit_group(0 [pid 770] ioctl(4, LOOP_SET_FD, 3 [pid 769] ioctl(4, LOOP_SET_FD, 3 [pid 768] <... close resumed>) = 0 [pid 767] <... exit_group resumed>) = ? [pid 762] <... close resumed>) = 0 [pid 770] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 769] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 768] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 770] ioctl(4, LOOP_CLR_FD [pid 769] ioctl(4, LOOP_CLR_FD [pid 768] <... openat resumed>) = 3 [pid 310] <... openat resumed>) = 3 [pid 770] <... ioctl resumed>) = 0 [pid 769] <... ioctl resumed>) = 0 [pid 768] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] ioctl(3, LOOP_CLR_FD [pid 768] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] <... ioctl resumed>) = 0 [pid 768] exit_group(0 [pid 767] +++ exited with 0 +++ [pid 762] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] close(3 [pid 768] <... exit_group resumed>) = ? [pid 762] <... openat resumed>) = 3 [pid 310] <... close resumed>) = 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=767, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 768] +++ exited with 0 +++ [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 770] ioctl(4, LOOP_SET_FD, 3 [pid 769] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... restart_syscall resumed>) = 0 [pid 770] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 769] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 762] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 771 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=768, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 770] close(4 [pid 769] close(4 [pid 762] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 770] <... close resumed>) = 0 [pid 769] <... close resumed>) = 0 [pid 762] exit_group(0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] <... openat resumed>) = 3 [pid 770] close(3 [pid 769] close(3 [pid 762] <... exit_group resumed>) = ? [pid 309] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 770] <... close resumed>) = 0 [pid 769] <... close resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] <... ioctl resumed>) = 0 [pid 770] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 769] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 770] <... openat resumed>) = 3 [pid 769] <... openat resumed>) = 3 [pid 309] close(3 [pid 308] <... close resumed>) = 0 [pid 770] ioctl(3, BLKSECDISCARD, [0, 0] [pid 769] ioctl(3, BLKSECDISCARD, [0, 0] [pid 762] +++ exited with 0 +++ [pid 309] <... close resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 770] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 769] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 770] exit_group(0 [pid 769] exit_group(0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 772 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=762, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 770] <... exit_group resumed>) = ? [pid 769] <... exit_group resumed>) = ? [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 773 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 770] +++ exited with 0 +++ [pid 769] +++ exited with 0 +++ [pid 305] <... restart_syscall resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=769, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=770, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 307] <... restart_syscall resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 305] close(3) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] <... openat resumed>) = 3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 307] ioctl(3, LOOP_CLR_FD [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 774 [pid 307] <... ioctl resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 307] close(3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 307] <... close resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] close(3./strace-static-x86_64: Process 771 attached [pid 771] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 771] setpgid(0, 0) = 0 [pid 771] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 306] <... close resumed>) = 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 775 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 776 [pid 771] <... openat resumed>) = 3 [pid 771] write(3, "1000", 4) = 4 [pid 771] close(3) = 0 [pid 771] memfd_create("syzkaller", 0./strace-static-x86_64: Process 774 attached [pid 774] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 771] <... memfd_create resumed>) = 3 [pid 771] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 774] <... prctl resumed>) = 0 [pid 774] setpgid(0, 0) = 0 [pid 774] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 772 attached ) = 3 [pid 774] write(3, "1000", 4 [pid 772] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 773 attached [pid 774] <... write resumed>) = 4 [pid 774] close(3) = 0 [pid 774] memfd_create("syzkaller", 0 [pid 772] <... prctl resumed>) = 0 [pid 774] <... memfd_create resumed>) = 3 [pid 773] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 774] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 772] setpgid(0, 0 [pid 774] 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 773] <... prctl resumed>) = 0 [pid 772] <... setpgid resumed>) = 0 [pid 771] 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 776 attached ./strace-static-x86_64: Process 775 attached [pid 773] setpgid(0, 0 [pid 772] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 771] <... write resumed>) = 262144 [pid 776] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 775] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 773] <... setpgid resumed>) = 0 [pid 772] <... openat resumed>) = 3 [pid 772] write(3, "1000", 4 [pid 773] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 772] <... write resumed>) = 4 [pid 773] <... openat resumed>) = 3 [pid 772] close(3 [pid 773] write(3, "1000", 4 [pid 772] <... close resumed>) = 0 [pid 771] munmap(0x7f7bfe3d8000, 262144 [pid 772] memfd_create("syzkaller", 0 [pid 771] <... munmap resumed>) = 0 [pid 775] <... prctl resumed>) = 0 [pid 773] <... write resumed>) = 4 [pid 771] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 776] <... prctl resumed>) = 0 [pid 775] setpgid(0, 0 [pid 773] close(3 [pid 772] <... memfd_create resumed>) = 3 [pid 771] ioctl(4, LOOP_SET_FD, 3 [pid 776] setpgid(0, 0 [pid 775] <... setpgid resumed>) = 0 [pid 774] <... write resumed>) = 262144 [pid 773] <... close resumed>) = 0 [pid 772] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 771] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 776] <... setpgid resumed>) = 0 [pid 774] munmap(0x7f7bfe3d8000, 262144 [pid 771] ioctl(4, LOOP_CLR_FD [pid 772] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 776] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 775] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 774] <... munmap resumed>) = 0 [pid 773] memfd_create("syzkaller", 0 [pid 771] <... ioctl resumed>) = 0 [pid 774] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 774] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 774] ioctl(4, LOOP_CLR_FD) = 0 [pid 773] <... memfd_create resumed>) = 3 [pid 775] <... openat resumed>) = 3 [pid 772] 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 775] write(3, "1000", 4 [pid 773] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 771] ioctl(4, LOOP_SET_FD, 3 [pid 773] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 775] <... write resumed>) = 4 [pid 771] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 774] ioctl(4, LOOP_SET_FD, 3 [pid 771] close(4 [pid 774] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 771] <... close resumed>) = 0 [pid 775] close(3 [pid 774] close(4 [pid 771] close(3 [pid 776] <... openat resumed>) = 3 [pid 775] <... close resumed>) = 0 [pid 774] <... close resumed>) = 0 [pid 773] 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 772] <... write resumed>) = 262144 [pid 771] <... close resumed>) = 0 [pid 774] close(3 [pid 771] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 775] memfd_create("syzkaller", 0 [pid 776] write(3, "1000", 4 [pid 775] <... memfd_create resumed>) = 3 [pid 774] <... close resumed>) = 0 [pid 773] <... write resumed>) = 262144 [pid 772] munmap(0x7f7bfe3d8000, 262144 [pid 771] <... openat resumed>) = 3 [pid 776] <... write resumed>) = 4 [pid 775] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 774] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 773] munmap(0x7f7bfe3d8000, 262144 [pid 772] <... munmap resumed>) = 0 [pid 771] ioctl(3, BLKSECDISCARD, [0, 0] [pid 776] close(3 [pid 775] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 774] <... openat resumed>) = 3 [pid 771] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 776] <... close resumed>) = 0 [pid 775] 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 774] ioctl(3, BLKSECDISCARD, [0, 0] [pid 773] <... munmap resumed>) = 0 [pid 772] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 776] memfd_create("syzkaller", 0 [pid 775] <... write resumed>) = 262144 [pid 774] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 773] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 772] <... openat resumed>) = 4 [pid 771] exit_group(0 [pid 776] <... memfd_create resumed>) = 3 [pid 775] munmap(0x7f7bfe3d8000, 262144 [pid 774] exit_group(0 [pid 773] <... openat resumed>) = 4 [pid 772] ioctl(4, LOOP_SET_FD, 3 [pid 771] <... exit_group resumed>) = ? [pid 776] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 775] <... munmap resumed>) = 0 [pid 774] <... exit_group resumed>) = ? [pid 773] ioctl(4, LOOP_SET_FD, 3 [pid 772] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 776] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 775] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 773] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 772] ioctl(4, LOOP_CLR_FD [pid 776] 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 775] <... openat resumed>) = 4 [pid 774] +++ exited with 0 +++ [pid 773] ioctl(4, LOOP_CLR_FD [pid 772] <... ioctl resumed>) = 0 [pid 771] +++ exited with 0 +++ [pid 776] <... write resumed>) = 262144 [pid 775] ioctl(4, LOOP_SET_FD, 3 [pid 773] <... ioctl resumed>) = 0 [pid 776] munmap(0x7f7bfe3d8000, 262144 [pid 775] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=771, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 776] <... munmap resumed>) = 0 [pid 775] ioctl(4, LOOP_CLR_FD [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 776] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 775] <... ioctl resumed>) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=774, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 776] <... openat resumed>) = 4 [pid 772] ioctl(4, LOOP_SET_FD, 3 [pid 776] ioctl(4, LOOP_SET_FD, 3 [pid 773] ioctl(4, LOOP_SET_FD, 3 [pid 772] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 776] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 773] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 772] close(4 [pid 305] <... restart_syscall resumed>) = 0 [pid 776] ioctl(4, LOOP_CLR_FD [pid 773] close(4 [pid 772] <... close resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 776] <... ioctl resumed>) = 0 [pid 775] ioctl(4, LOOP_SET_FD, 3 [pid 773] <... close resumed>) = 0 [pid 772] close(3 [pid 310] <... openat resumed>) = 3 [pid 775] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 773] close(3 [pid 772] <... close resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 775] close(4 [pid 773] <... close resumed>) = 0 [pid 772] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 775] <... close resumed>) = 0 [pid 773] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 772] <... openat resumed>) = 3 [pid 776] ioctl(4, LOOP_SET_FD, 3 [pid 775] close(3 [pid 773] <... openat resumed>) = 3 [pid 772] ioctl(3, BLKSECDISCARD, [0, 0] [pid 776] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 775] <... close resumed>) = 0 [pid 773] ioctl(3, BLKSECDISCARD, [0, 0] [pid 772] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] <... ioctl resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 776] close(4 [pid 775] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 773] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 772] exit_group(0 [pid 776] <... close resumed>) = 0 [pid 775] <... openat resumed>) = 3 [pid 773] exit_group(0 [pid 772] <... exit_group resumed>) = ? [pid 776] close(3 [pid 775] ioctl(3, BLKSECDISCARD, [0, 0] [pid 773] <... exit_group resumed>) = ? [pid 772] +++ exited with 0 +++ [pid 310] close(3 [pid 305] <... openat resumed>) = 3 [pid 776] <... close resumed>) = 0 [pid 775] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 773] +++ exited with 0 +++ [pid 310] <... close resumed>) = 0 [pid 776] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 775] exit_group(0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=773, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=772, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] ioctl(3, LOOP_CLR_FD [pid 776] <... openat resumed>) = 3 [pid 775] <... exit_group resumed>) = ? [pid 776] ioctl(3, BLKSECDISCARD, [0, 0] [pid 775] +++ exited with 0 +++ [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... ioctl resumed>) = 0 [pid 776] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=775, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 776] exit_group(0) = ? [pid 776] +++ exited with 0 +++ [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 305] close(3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 777 [pid 307] <... openat resumed>) = 3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=776, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] ioctl(3, LOOP_CLR_FD [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 307] <... ioctl resumed>) = 0 [pid 307] close(3) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... close resumed>) = 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 778 [pid 306] <... restart_syscall resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 779 ./strace-static-x86_64: Process 779 attached [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] <... openat resumed>) = 3 [pid 309] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 780 [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] <... ioctl resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 309] close(3 [pid 308] <... close resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 779] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 779] setpgid(0, 0) = 0 [pid 779] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 ./strace-static-x86_64: Process 778 attached [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 781 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 782 [pid 778] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 779] write(3, "1000", 4) = 4 [pid 779] close(3) = 0 [pid 778] <... prctl resumed>) = 0 [pid 779] memfd_create("syzkaller", 0 [pid 778] setpgid(0, 0) = 0 [pid 778] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 779] <... memfd_create resumed>) = 3 [pid 779] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 778] <... openat resumed>) = 3 [pid 779] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 778] write(3, "1000", 4) = 4 [pid 778] close(3) = 0 [pid 778] memfd_create("syzkaller", 0) = 3 [pid 778] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 779] 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 777 attached ./strace-static-x86_64: Process 782 attached [pid 778] 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 777] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 780 attached [pid 780] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 777] <... prctl resumed>) = 0 [pid 782] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 777] setpgid(0, 0 [pid 780] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 781 attached [pid 780] setpgid(0, 0 [pid 781] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 780] <... setpgid resumed>) = 0 [pid 782] <... prctl resumed>) = 0 [pid 781] <... prctl resumed>) = 0 [pid 780] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 777] <... setpgid resumed>) = 0 [pid 782] setpgid(0, 0 [pid 781] setpgid(0, 0 [pid 780] <... openat resumed>) = 3 [pid 779] <... write resumed>) = 262144 [pid 777] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 781] <... setpgid resumed>) = 0 [pid 780] write(3, "1000", 4 [pid 781] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 780] <... write resumed>) = 4 [pid 782] <... setpgid resumed>) = 0 [pid 781] <... openat resumed>) = 3 [pid 780] close(3 [pid 778] <... write resumed>) = 262144 [pid 777] <... openat resumed>) = 3 [pid 781] write(3, "1000", 4 [pid 780] <... close resumed>) = 0 [pid 779] munmap(0x7f7bfe3d8000, 262144 [pid 781] <... write resumed>) = 4 [pid 780] memfd_create("syzkaller", 0 [pid 779] <... munmap resumed>) = 0 [pid 781] close(3 [pid 780] <... memfd_create resumed>) = 3 [pid 779] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 778] munmap(0x7f7bfe3d8000, 262144 [pid 781] <... close resumed>) = 0 [pid 780] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 779] <... openat resumed>) = 4 [pid 778] <... munmap resumed>) = 0 [pid 781] memfd_create("syzkaller", 0 [pid 780] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 779] ioctl(4, LOOP_SET_FD, 3 [pid 778] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 782] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 781] <... memfd_create resumed>) = 3 [pid 780] 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 779] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 778] <... openat resumed>) = 4 [pid 777] write(3, "1000", 4 [pid 782] <... openat resumed>) = 3 [pid 781] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 779] ioctl(4, LOOP_CLR_FD [pid 778] ioctl(4, LOOP_SET_FD, 3 [pid 777] <... write resumed>) = 4 [pid 781] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 779] <... ioctl resumed>) = 0 [pid 778] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 782] write(3, "1000", 4 [pid 781] 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 780] <... write resumed>) = 262144 [pid 778] ioctl(4, LOOP_CLR_FD [pid 777] close(3 [pid 782] <... write resumed>) = 4 [pid 781] <... write resumed>) = 262144 [pid 780] munmap(0x7f7bfe3d8000, 262144 [pid 778] <... ioctl resumed>) = 0 [pid 777] <... close resumed>) = 0 [pid 781] munmap(0x7f7bfe3d8000, 262144 [pid 780] <... munmap resumed>) = 0 [pid 779] ioctl(4, LOOP_SET_FD, 3 [pid 782] close(3 [pid 781] <... munmap resumed>) = 0 [pid 780] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 779] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 777] memfd_create("syzkaller", 0 [pid 781] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 780] <... openat resumed>) = 4 [pid 779] close(4 [pid 782] <... close resumed>) = 0 [pid 781] <... openat resumed>) = 4 [pid 780] ioctl(4, LOOP_SET_FD, 3 [pid 779] <... close resumed>) = 0 [pid 777] <... memfd_create resumed>) = 3 [pid 781] ioctl(4, LOOP_SET_FD, 3 [pid 780] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 779] close(3 [pid 782] memfd_create("syzkaller", 0 [pid 781] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 780] ioctl(4, LOOP_CLR_FD [pid 779] <... close resumed>) = 0 [pid 777] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 781] ioctl(4, LOOP_CLR_FD [pid 780] <... ioctl resumed>) = 0 [pid 779] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 778] ioctl(4, LOOP_SET_FD, 3 [pid 781] <... ioctl resumed>) = 0 [pid 779] <... openat resumed>) = 3 [pid 778] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 782] <... memfd_create resumed>) = 3 [pid 777] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 782] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 779] ioctl(3, BLKSECDISCARD, [0, 0] [pid 778] close(4 [pid 777] 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 782] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 780] ioctl(4, LOOP_SET_FD, 3 [pid 779] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 778] <... close resumed>) = 0 [pid 777] <... write resumed>) = 262144 [pid 782] 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 781] ioctl(4, LOOP_SET_FD, 3 [pid 780] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 779] exit_group(0 [pid 778] close(3 [pid 777] munmap(0x7f7bfe3d8000, 262144 [pid 782] <... write resumed>) = 262144 [pid 781] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 780] close(4 [pid 779] <... exit_group resumed>) = ? [pid 778] <... close resumed>) = 0 [pid 777] <... munmap resumed>) = 0 [pid 782] munmap(0x7f7bfe3d8000, 262144 [pid 781] close(4 [pid 780] <... close resumed>) = 0 [pid 779] +++ exited with 0 +++ [pid 778] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 777] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 782] <... munmap resumed>) = 0 [pid 781] <... close resumed>) = 0 [pid 780] close(3 [pid 778] <... openat resumed>) = 3 [pid 777] <... openat resumed>) = 4 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=779, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 782] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 781] close(3 [pid 780] <... close resumed>) = 0 [pid 778] ioctl(3, BLKSECDISCARD, [0, 0] [pid 777] ioctl(4, LOOP_SET_FD, 3 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 782] <... openat resumed>) = 4 [pid 781] <... close resumed>) = 0 [pid 780] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 778] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 777] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... restart_syscall resumed>) = 0 [pid 782] ioctl(4, LOOP_SET_FD, 3 [pid 781] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 780] <... openat resumed>) = 3 [pid 778] exit_group(0 [pid 777] ioctl(4, LOOP_CLR_FD [pid 782] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 781] <... openat resumed>) = 3 [pid 780] ioctl(3, BLKSECDISCARD, [0, 0] [pid 778] <... exit_group resumed>) = ? [pid 777] <... ioctl resumed>) = 0 [pid 782] ioctl(4, LOOP_CLR_FD [pid 781] ioctl(3, BLKSECDISCARD, [0, 0] [pid 780] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 778] +++ exited with 0 +++ [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 782] <... ioctl resumed>) = 0 [pid 781] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 780] exit_group(0 [pid 306] <... openat resumed>) = 3 [pid 781] exit_group(0 [pid 780] <... exit_group resumed>) = ? [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=778, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] ioctl(3, LOOP_CLR_FD [pid 781] <... exit_group resumed>) = ? [pid 780] +++ exited with 0 +++ [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 306] <... ioctl resumed>) = 0 [pid 781] +++ exited with 0 +++ [pid 777] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... restart_syscall resumed>) = 0 [pid 306] close(3 [pid 782] ioctl(4, LOOP_SET_FD, 3 [pid 777] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... close resumed>) = 0 [pid 782] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 777] close(4 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 782] close(4 [pid 777] <... close resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=781, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=780, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 782] <... close resumed>) = 0 [pid 777] close(3 [pid 307] <... openat resumed>) = 3 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 783 [pid 782] close(3 [pid 777] <... close resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 782] <... close resumed>) = 0 [pid 777] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 307] <... ioctl resumed>) = 0 [pid 782] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 777] <... openat resumed>) = 3 [pid 307] close(3 [pid 782] <... openat resumed>) = 3 [pid 777] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] <... close resumed>) = 0 [pid 782] ioctl(3, BLKSECDISCARD, [0, 0] [pid 777] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 782] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 777] exit_group(0 [pid 308] <... openat resumed>) = 3 [pid 782] exit_group(0 [pid 777] <... exit_group resumed>) = ? [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 784 [pid 782] <... exit_group resumed>) = ? [pid 777] +++ exited with 0 +++ [pid 308] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 784 attached [pid 782] +++ exited with 0 +++ ./strace-static-x86_64: Process 783 attached [pid 783] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 783] setpgid(0, 0) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=777, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=782, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 308] <... close resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 783] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 783] <... openat resumed>) = 3 [pid 305] <... openat resumed>) = 3 [pid 783] write(3, "1000", 4) = 4 [pid 783] close(3) = 0 [pid 783] memfd_create("syzkaller", 0 [pid 309] <... openat resumed>) = 3 [pid 310] <... openat resumed>) = 3 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 785 [pid 305] ioctl(3, LOOP_CLR_FD [pid 783] <... memfd_create resumed>) = 3 [pid 783] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 305] <... ioctl resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 310] ioctl(3, LOOP_CLR_FD [pid 309] <... ioctl resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 305] close(3 [pid 309] close(3 [pid 310] close(3 [pid 309] <... close resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 783] 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 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 787 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 786 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 788 ./strace-static-x86_64: Process 785 attached [pid 784] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 785] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 784] <... prctl resumed>) = 0 [pid 785] <... prctl resumed>) = 0 [pid 785] setpgid(0, 0) = 0 [pid 785] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 784] setpgid(0, 0 [pid 785] <... openat resumed>) = 3 [pid 784] <... setpgid resumed>) = 0 [pid 784] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 783] <... write resumed>) = 262144 [pid 785] write(3, "1000", 4) = 4 [pid 785] close(3) = 0 [pid 785] memfd_create("syzkaller", 0 [pid 783] munmap(0x7f7bfe3d8000, 262144 [pid 784] <... openat resumed>) = 3 [pid 783] <... munmap resumed>) = 0 [pid 785] <... memfd_create resumed>) = 3 [pid 785] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 784] write(3, "1000", 4 [pid 783] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 783] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 783] ioctl(4, LOOP_CLR_FD) = 0 [pid 784] <... write resumed>) = 4 [pid 784] close(3) = 0 [pid 784] memfd_create("syzkaller", 0) = 3 ./strace-static-x86_64: Process 786 attached [pid 786] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 784] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 783] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 783] close(4) = 0 [pid 783] close(3) = 0 [pid 784] 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 787 attached [pid 786] <... prctl resumed>) = 0 [pid 787] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 786] setpgid(0, 0 [pid 787] <... prctl resumed>) = 0 [pid 786] <... setpgid resumed>) = 0 [pid 785] 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 787] setpgid(0, 0 [pid 786] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 784] <... write resumed>) = 262144 [pid 783] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 787] <... setpgid resumed>) = 0 [pid 786] <... openat resumed>) = 3 [pid 784] munmap(0x7f7bfe3d8000, 262144 [pid 783] <... openat resumed>) = 3 [pid 787] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 786] write(3, "1000", 4 [pid 783] ioctl(3, BLKSECDISCARD, [0, 0] [pid 787] <... openat resumed>) = 3 [pid 786] <... write resumed>) = 4 [pid 783] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 787] write(3, "1000", 4 [pid 786] close(3 [pid 784] <... munmap resumed>) = 0 [pid 783] exit_group(0 [pid 787] <... write resumed>) = 4 [pid 786] <... close resumed>) = 0 [pid 783] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 788 attached [pid 787] close(3 [pid 786] memfd_create("syzkaller", 0 [pid 785] <... write resumed>) = 262144 [pid 784] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 783] +++ exited with 0 +++ [pid 787] <... close resumed>) = 0 [pid 786] <... memfd_create resumed>) = 3 [pid 785] munmap(0x7f7bfe3d8000, 262144 [pid 788] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 787] memfd_create("syzkaller", 0 [pid 786] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 785] <... munmap resumed>) = 0 [pid 784] <... openat resumed>) = 4 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=783, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 787] <... memfd_create resumed>) = 3 [pid 786] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 785] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 784] ioctl(4, LOOP_SET_FD, 3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 788] <... prctl resumed>) = 0 [pid 787] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 786] 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 785] <... openat resumed>) = 4 [pid 784] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... openat resumed>) = 3 [pid 788] setpgid(0, 0 [pid 787] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 786] <... write resumed>) = 262144 [pid 785] ioctl(4, LOOP_SET_FD, 3 [pid 784] ioctl(4, LOOP_CLR_FD [pid 306] ioctl(3, LOOP_CLR_FD [pid 788] <... setpgid resumed>) = 0 [pid 787] 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 786] munmap(0x7f7bfe3d8000, 262144 [pid 785] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 784] <... ioctl resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 788] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 787] <... write resumed>) = 262144 [pid 786] <... munmap resumed>) = 0 [pid 785] ioctl(4, LOOP_CLR_FD [pid 306] close(3 [pid 787] munmap(0x7f7bfe3d8000, 262144 [pid 786] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 785] <... ioctl resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 787] <... munmap resumed>) = 0 [pid 786] <... openat resumed>) = 4 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 788] <... openat resumed>) = 3 [pid 787] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 786] ioctl(4, LOOP_SET_FD, 3 [pid 787] <... openat resumed>) = 4 [pid 786] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 789 [pid 788] write(3, "1000", 4 [pid 787] ioctl(4, LOOP_SET_FD, 3 [pid 786] ioctl(4, LOOP_CLR_FD [pid 787] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 786] <... ioctl resumed>) = 0 [pid 788] <... write resumed>) = 4 [pid 787] ioctl(4, LOOP_CLR_FD) = 0 [pid 784] ioctl(4, LOOP_SET_FD, 3 [pid 788] close(3 [pid 784] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 785] ioctl(4, LOOP_SET_FD, 3 [pid 784] close(4 [pid 788] <... close resumed>) = 0 [pid 785] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 785] close(4 [pid 784] <... close resumed>) = 0 [pid 785] <... close resumed>) = 0 [pid 788] memfd_create("syzkaller", 0 [pid 785] close(3 [pid 784] close(3 [pid 788] <... memfd_create resumed>) = 3 [pid 785] <... close resumed>) = 0 [pid 787] ioctl(4, LOOP_SET_FD, 3 [pid 786] ioctl(4, LOOP_SET_FD, 3 [pid 785] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 787] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 786] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 785] <... openat resumed>) = 3 [pid 787] close(4 [pid 786] close(4 [pid 785] ioctl(3, BLKSECDISCARD, [0, 0] [pid 787] <... close resumed>) = 0 [pid 786] <... close resumed>) = 0 [pid 785] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 788] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 787] close(3 [pid 786] close(3 [pid 785] exit_group(0 [pid 784] <... close resumed>) = 0 [pid 788] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 787] <... close resumed>) = 0 [pid 786] <... close resumed>) = 0 [pid 785] <... exit_group resumed>) = ? [pid 787] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 786] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 785] +++ exited with 0 +++ [pid 784] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 787] <... openat resumed>) = 3 [pid 786] <... openat resumed>) = 3 [pid 787] ioctl(3, BLKSECDISCARD, [0, 0] [pid 786] ioctl(3, BLKSECDISCARD, [0, 0] [pid 787] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 786] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 787] exit_group(0 [pid 786] exit_group(0 [pid 787] <... exit_group resumed>) = ? [pid 786] <... exit_group resumed>) = ? [pid 788] 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 787] +++ exited with 0 +++ [pid 786] +++ exited with 0 +++ [pid 784] <... openat resumed>) = 3 [pid 784] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=785, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 789 attached [pid 789] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 789] setpgid(0, 0) = 0 [pid 789] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 789] write(3, "1000", 4) = 4 [pid 789] close(3) = 0 [pid 789] memfd_create("syzkaller", 0 [pid 788] <... write resumed>) = 262144 [pid 784] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=787, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=786, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 784] exit_group(0 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 789] <... memfd_create resumed>) = 3 [pid 784] <... exit_group resumed>) = ? [pid 309] <... restart_syscall resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 789] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 788] munmap(0x7f7bfe3d8000, 262144 [pid 784] +++ exited with 0 +++ [pid 308] ioctl(3, LOOP_CLR_FD [pid 305] <... restart_syscall resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=784, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] <... ioctl resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 788] <... munmap resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 308] close(3 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 790 [pid 789] 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 788] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] <... close resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 789] <... write resumed>) = 262144 [pid 309] <... ioctl resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... openat resumed>) = 3 [pid 309] close(3 [pid 789] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 789] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 305] ioctl(3, LOOP_CLR_FD [pid 309] <... close resumed>) = 0 [pid 788] <... openat resumed>) = 4 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... ioctl resumed>) = 0 [pid 788] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 791 [pid 789] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 789] ioctl(4, LOOP_CLR_FD [pid 305] close(3 [pid 789] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 791 attached [pid 791] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 305] <... close resumed>) = 0 [pid 788] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 792 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 791] setpgid(0, 0) = 0 [pid 791] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 791] write(3, "1000", 4 [pid 789] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 789] close(4) = 0 [pid 789] close(3 [pid 788] ioctl(4, LOOP_CLR_FD [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 793 [pid 788] <... ioctl resumed>) = 0 [pid 789] <... close resumed>) = 0 [pid 789] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 789] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 789] exit_group(0) = ? [pid 788] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 788] close(4 [pid 789] +++ exited with 0 +++ [pid 788] <... close resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=789, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 791] <... write resumed>) = 4 [pid 788] close(3 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 791] close(3) = 0 [pid 791] memfd_create("syzkaller", 0) = 3 [pid 791] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 306] <... restart_syscall resumed>) = 0 [pid 788] <... close resumed>) = 0 ./strace-static-x86_64: Process 790 attached ./strace-static-x86_64: Process 793 attached [pid 791] 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 788] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 790] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 788] <... openat resumed>) = 3 [pid 306] <... openat resumed>) = 3 [pid 790] <... prctl resumed>) = 0 [pid 788] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] ioctl(3, LOOP_CLR_FD [pid 790] setpgid(0, 0 [pid 788] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] <... ioctl resumed>) = 0 [pid 790] <... setpgid resumed>) = 0 [pid 788] exit_group(0 [pid 306] close(3./strace-static-x86_64: Process 792 attached [pid 790] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 788] <... exit_group resumed>) = ? [pid 306] <... close resumed>) = 0 [pid 792] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 790] <... openat resumed>) = 3 [pid 788] +++ exited with 0 +++ [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 793] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 792] <... prctl resumed>) = 0 [pid 790] write(3, "1000", 4 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=788, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 792] setpgid(0, 0 [pid 790] <... write resumed>) = 4 [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 794 [pid 793] <... prctl resumed>) = 0 [pid 792] <... setpgid resumed>) = 0 [pid 791] <... write resumed>) = 262144 [pid 790] close(3 [pid 310] <... restart_syscall resumed>) = 0 [pid 793] setpgid(0, 0 [pid 792] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 790] <... close resumed>) = 0 [pid 792] <... openat resumed>) = 3 [pid 790] memfd_create("syzkaller", 0 [pid 793] <... setpgid resumed>) = 0 [pid 792] write(3, "1000", 4 [pid 791] munmap(0x7f7bfe3d8000, 262144 [pid 790] <... memfd_create resumed>) = 3 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 792] <... write resumed>) = 4 [pid 791] <... munmap resumed>) = 0 [pid 790] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 310] <... openat resumed>) = 3 [pid 792] close(3 [pid 791] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 790] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 310] ioctl(3, LOOP_CLR_FD [pid 793] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 792] <... close resumed>) = 0 [pid 791] <... openat resumed>) = 4 [pid 790] 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 310] <... ioctl resumed>) = 0 [pid 793] <... openat resumed>) = 3 [pid 792] memfd_create("syzkaller", 0 [pid 791] ioctl(4, LOOP_SET_FD, 3 [pid 790] <... write resumed>) = 262144 [pid 310] close(3 [pid 792] <... memfd_create resumed>) = 3 [pid 791] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 790] munmap(0x7f7bfe3d8000, 262144 [pid 310] <... close resumed>) = 0 [pid 792] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 791] ioctl(4, LOOP_CLR_FD [pid 790] <... munmap resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 792] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 791] <... ioctl resumed>) = 0 [pid 790] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 793] write(3, "1000", 4 [pid 792] 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 790] <... openat resumed>) = 4 ./strace-static-x86_64: Process 794 attached [pid 793] <... write resumed>) = 4 [pid 792] <... write resumed>) = 262144 [pid 790] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 795 [pid 792] munmap(0x7f7bfe3d8000, 262144 [pid 791] ioctl(4, LOOP_SET_FD, 3 [pid 790] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 792] <... munmap resumed>) = 0 [pid 791] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 790] ioctl(4, LOOP_CLR_FD [pid 793] close(3) = 0 [pid 792] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 791] close(4 [pid 790] <... ioctl resumed>) = 0 [pid 793] memfd_create("syzkaller", 0 [pid 792] <... openat resumed>) = 4 [pid 791] <... close resumed>) = 0 [pid 792] ioctl(4, LOOP_SET_FD, 3 [pid 791] close(3 [pid 794] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 793] <... memfd_create resumed>) = 3 [pid 792] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 791] <... close resumed>) = 0 [pid 793] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 792] ioctl(4, LOOP_CLR_FD [pid 791] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000./strace-static-x86_64: Process 795 attached [pid 793] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 792] <... ioctl resumed>) = 0 [pid 791] <... openat resumed>) = 3 [pid 795] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 791] ioctl(3, BLKSECDISCARD, [0, 0] [pid 795] <... prctl resumed>) = 0 [pid 791] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 795] setpgid(0, 0 [pid 791] exit_group(0 [pid 790] ioctl(4, LOOP_SET_FD, 3 [pid 795] <... setpgid resumed>) = 0 [pid 791] <... exit_group resumed>) = ? [pid 790] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 795] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 793] 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 791] +++ exited with 0 +++ [pid 790] close(4 [pid 795] <... openat resumed>) = 3 [pid 792] ioctl(4, LOOP_SET_FD, 3 [pid 790] <... close resumed>) = 0 [pid 795] write(3, "1000", 4 [pid 792] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 790] close(3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=791, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 795] <... write resumed>) = 4 [pid 792] close(4 [pid 790] <... close resumed>) = 0 [pid 795] close(3 [pid 792] <... close resumed>) = 0 [pid 790] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 795] <... close resumed>) = 0 [pid 792] close(3 [pid 790] <... openat resumed>) = 3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 795] memfd_create("syzkaller", 0 [pid 794] <... prctl resumed>) = 0 [pid 793] <... write resumed>) = 262144 [pid 792] <... close resumed>) = 0 [pid 790] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] <... openat resumed>) = 3 [pid 795] <... memfd_create resumed>) = 3 [pid 792] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 790] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] ioctl(3, LOOP_CLR_FD [pid 795] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 794] setpgid(0, 0 [pid 793] munmap(0x7f7bfe3d8000, 262144 [pid 792] <... openat resumed>) = 3 [pid 790] exit_group(0 [pid 308] <... ioctl resumed>) = 0 [pid 795] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 792] ioctl(3, BLKSECDISCARD, [0, 0] [pid 790] <... exit_group resumed>) = ? [pid 308] close(3 [pid 795] 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 794] <... setpgid resumed>) = 0 [pid 793] <... munmap resumed>) = 0 [pid 792] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 790] +++ exited with 0 +++ [pid 308] <... close resumed>) = 0 [pid 795] <... write resumed>) = 262144 [pid 794] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 793] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 792] exit_group(0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=790, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 795] munmap(0x7f7bfe3d8000, 262144 [pid 792] <... exit_group resumed>) = ? [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 795] <... munmap resumed>) = 0 [pid 794] <... openat resumed>) = 3 [pid 793] <... openat resumed>) = 4 [pid 792] +++ exited with 0 +++ [pid 307] <... restart_syscall resumed>) = 0 [pid 795] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 794] write(3, "1000", 4 [pid 793] ioctl(4, LOOP_SET_FD, 3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=792, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 796 [pid 795] ioctl(4, LOOP_SET_FD, 3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 795] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 794] <... write resumed>) = 4 [pid 793] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] <... openat resumed>) = 3 [pid 795] ioctl(4, LOOP_CLR_FD [pid 307] ioctl(3, LOOP_CLR_FD [pid 793] ioctl(4, LOOP_CLR_FD [pid 795] <... ioctl resumed>) = 0 [pid 794] close(3 [pid 307] <... ioctl resumed>) = 0 [pid 307] close(3 [pid 793] <... ioctl resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 794] <... close resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 794] memfd_create("syzkaller", 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 797 [pid 794] <... memfd_create resumed>) = 3 [pid 794] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 794] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 795] ioctl(4, LOOP_SET_FD, 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3./strace-static-x86_64: Process 796 attached [pid 795] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] <... close resumed>) = 0 [pid 796] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 795] close(4 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 796] <... prctl resumed>) = 0 [pid 795] <... close resumed>) = 0 [pid 796] setpgid(0, 0 [pid 795] close(3 [pid 796] <... setpgid resumed>) = 0 [pid 795] <... close resumed>) = 0 [pid 796] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 795] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 793] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 798 [pid 796] <... openat resumed>) = 3 [pid 795] <... openat resumed>) = 3 [pid 794] 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 793] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 796] write(3, "1000", 4 [pid 795] ioctl(3, BLKSECDISCARD, [0, 0] [pid 793] close(4 [pid 796] <... write resumed>) = 4 [pid 795] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 793] <... close resumed>) = 0 [pid 796] close(3 [pid 795] exit_group(0 [pid 793] close(3 [pid 796] <... close resumed>) = 0 [pid 795] <... exit_group resumed>) = ? [pid 796] memfd_create("syzkaller", 0 [pid 795] +++ exited with 0 +++ [pid 794] <... write resumed>) = 262144 [pid 796] <... memfd_create resumed>) = 3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=795, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 796] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 796] 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 794] munmap(0x7f7bfe3d8000, 262144 [pid 793] <... close resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 794] <... munmap resumed>) = 0 [pid 793] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 793] <... openat resumed>) = 3 [pid 310] <... ioctl resumed>) = 0 [pid 793] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] close(3./strace-static-x86_64: Process 797 attached [pid 793] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] <... close resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 797] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 796] <... write resumed>) = 262144 [pid 797] <... prctl resumed>) = 0 [pid 797] setpgid(0, 0./strace-static-x86_64: Process 798 attached ) = 0 [pid 793] exit_group(0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 799 [pid 798] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 797] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 796] munmap(0x7f7bfe3d8000, 262144 [pid 793] <... exit_group resumed>) = ? [pid 798] <... prctl resumed>) = 0 [pid 797] <... openat resumed>) = 3 [pid 796] <... munmap resumed>) = 0 [pid 794] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 798] setpgid(0, 0 [pid 797] write(3, "1000", 4 [pid 796] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 798] <... setpgid resumed>) = 0 [pid 797] <... write resumed>) = 4 [pid 796] <... openat resumed>) = 4 [pid 793] +++ exited with 0 +++ [pid 798] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 797] close(3 [pid 796] ioctl(4, LOOP_SET_FD, 3 [pid 794] <... openat resumed>) = 4 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=793, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 798] <... openat resumed>) = 3 [pid 797] <... close resumed>) = 0 [pid 796] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 794] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 798] write(3, "1000", 4 [pid 797] memfd_create("syzkaller", 0 [pid 796] ioctl(4, LOOP_CLR_FD [pid 794] ioctl(4, LOOP_CLR_FD [pid 798] <... write resumed>) = 4 [pid 797] <... memfd_create resumed>) = 3 [pid 796] <... ioctl resumed>) = 0 [pid 794] <... ioctl resumed>) = 0 [pid 798] close(3 [pid 797] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 798] <... close resumed>) = 0 [pid 797] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 798] memfd_create("syzkaller", 0 [pid 797] 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 799 attached [pid 798] <... memfd_create resumed>) = 3 [pid 796] ioctl(4, LOOP_SET_FD, 3 [pid 794] ioctl(4, LOOP_SET_FD, 3 [pid 799] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 798] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 796] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 794] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 799] <... prctl resumed>) = 0 [pid 798] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 796] close(4 [pid 794] close(4 [pid 799] setpgid(0, 0 [pid 798] 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 796] <... close resumed>) = 0 [pid 794] <... close resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 799] <... setpgid resumed>) = 0 [pid 798] <... write resumed>) = 262144 [pid 797] <... write resumed>) = 262144 [pid 796] close(3 [pid 799] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 798] munmap(0x7f7bfe3d8000, 262144 [pid 797] munmap(0x7f7bfe3d8000, 262144 [pid 796] <... close resumed>) = 0 [pid 794] close(3 [pid 305] <... openat resumed>) = 3 [pid 799] <... openat resumed>) = 3 [pid 798] <... munmap resumed>) = 0 [pid 797] <... munmap resumed>) = 0 [pid 796] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 799] write(3, "1000", 4 [pid 798] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 797] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 796] <... openat resumed>) = 3 [pid 799] <... write resumed>) = 4 [pid 798] <... openat resumed>) = 4 [pid 797] <... openat resumed>) = 4 [pid 796] ioctl(3, BLKSECDISCARD, [0, 0] [pid 794] <... close resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 799] close(3 [pid 798] ioctl(4, LOOP_SET_FD, 3 [pid 797] ioctl(4, LOOP_SET_FD, 3 [pid 796] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 799] <... close resumed>) = 0 [pid 798] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 797] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 796] exit_group(0 [pid 799] memfd_create("syzkaller", 0 [pid 798] ioctl(4, LOOP_CLR_FD [pid 797] ioctl(4, LOOP_CLR_FD [pid 796] <... exit_group resumed>) = ? [pid 799] <... memfd_create resumed>) = 3 [pid 798] <... ioctl resumed>) = 0 [pid 797] <... ioctl resumed>) = 0 [pid 796] +++ exited with 0 +++ [pid 794] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] <... ioctl resumed>) = 0 [pid 799] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 799] 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 794] <... openat resumed>) = 3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=796, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] close(3 [pid 798] ioctl(4, LOOP_SET_FD, 3 [pid 797] ioctl(4, LOOP_SET_FD, 3 [pid 794] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 799] <... write resumed>) = 262144 [pid 798] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 797] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 799] munmap(0x7f7bfe3d8000, 262144 [pid 798] close(4 [pid 797] close(4 [pid 799] <... munmap resumed>) = 0 [pid 798] <... close resumed>) = 0 [pid 797] <... close resumed>) = 0 [pid 794] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] <... restart_syscall resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 799] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 798] close(3 [pid 797] close(3 [pid 799] <... openat resumed>) = 4 [pid 798] <... close resumed>) = 0 [pid 797] <... close resumed>) = 0 [pid 794] exit_group(0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 799] ioctl(4, LOOP_SET_FD, 3 [pid 798] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 797] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 799] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 798] <... openat resumed>) = 3 [pid 797] <... openat resumed>) = 3 [pid 799] ioctl(4, LOOP_CLR_FD [pid 798] ioctl(3, BLKSECDISCARD, [0, 0] [pid 797] ioctl(3, BLKSECDISCARD, [0, 0] [pid 799] <... ioctl resumed>) = 0 [pid 798] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 797] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 798] exit_group(0 [pid 797] exit_group(0 [pid 798] <... exit_group resumed>) = ? [pid 797] <... exit_group resumed>) = ? [pid 798] +++ exited with 0 +++ [pid 797] +++ exited with 0 +++ [pid 794] <... exit_group resumed>) = ? [pid 799] ioctl(4, LOOP_SET_FD, 3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=797, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 799] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 799] close(4) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 799] close(3 [pid 307] <... openat resumed>) = 3 [pid 799] <... close resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 799] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 794] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=798, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 307] <... ioctl resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 800 [pid 799] <... openat resumed>) = 3 [pid 307] close(3 [pid 799] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] <... openat resumed>) = 3 [pid 307] <... close resumed>) = 0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=794, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 799] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 799] exit_group(0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 306] <... openat resumed>) = 3 [pid 799] <... exit_group resumed>) = ? [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 801 [pid 306] ioctl(3, LOOP_CLR_FD [pid 799] +++ exited with 0 +++ [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] <... ioctl resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] <... openat resumed>) = 3 [pid 308] close(3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=799, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 802 ./strace-static-x86_64: Process 800 attached [pid 800] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] <... close resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 800] <... prctl resumed>) = 0 [pid 800] setpgid(0, 0) = 0 [pid 800] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 309] close(3 [pid 800] write(3, "1000", 4 [pid 310] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 309] <... close resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 803 [pid 310] <... ioctl resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] close(3 [pid 800] <... write resumed>) = 4 [pid 800] close(3) = 0 [pid 800] memfd_create("syzkaller", 0 [pid 310] <... close resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 804 [pid 800] <... memfd_create resumed>) = 3 [pid 800] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 805 ./strace-static-x86_64: Process 805 attached ./strace-static-x86_64: Process 801 attached ./strace-static-x86_64: Process 802 attached [pid 802] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 802] setpgid(0, 0) = 0 [pid 802] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 805] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 800] 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 805] <... prctl resumed>) = 0 [pid 802] <... openat resumed>) = 3 [pid 802] write(3, "1000", 4) = 4 [pid 802] close(3 [pid 805] setpgid(0, 0 [pid 801] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 802] <... close resumed>) = 0 [pid 802] memfd_create("syzkaller", 0) = 3 ./strace-static-x86_64: Process 804 attached ./strace-static-x86_64: Process 803 attached [pid 805] <... setpgid resumed>) = 0 [pid 801] <... prctl resumed>) = 0 [pid 804] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 803] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 802] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 805] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 804] <... prctl resumed>) = 0 [pid 803] <... prctl resumed>) = 0 [pid 804] setpgid(0, 0 [pid 803] setpgid(0, 0 [pid 802] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 801] setpgid(0, 0 [pid 805] <... openat resumed>) = 3 [pid 804] <... setpgid resumed>) = 0 [pid 803] <... setpgid resumed>) = 0 [pid 801] <... setpgid resumed>) = 0 [pid 804] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 803] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 800] <... write resumed>) = 262144 [pid 805] write(3, "1000", 4 [pid 804] <... openat resumed>) = 3 [pid 803] <... openat resumed>) = 3 [pid 801] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 805] <... write resumed>) = 4 [pid 804] write(3, "1000", 4 [pid 803] write(3, "1000", 4 [pid 802] 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 801] <... openat resumed>) = 3 [pid 800] munmap(0x7f7bfe3d8000, 262144 [pid 804] <... write resumed>) = 4 [pid 803] <... write resumed>) = 4 [pid 805] close(3 [pid 804] close(3 [pid 803] close(3 [pid 802] <... write resumed>) = 262144 [pid 801] write(3, "1000", 4 [pid 800] <... munmap resumed>) = 0 [pid 804] <... close resumed>) = 0 [pid 803] <... close resumed>) = 0 [pid 800] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 805] <... close resumed>) = 0 [pid 804] memfd_create("syzkaller", 0 [pid 803] memfd_create("syzkaller", 0 [pid 801] <... write resumed>) = 4 [pid 800] <... openat resumed>) = 4 [pid 804] <... memfd_create resumed>) = 3 [pid 803] <... memfd_create resumed>) = 3 [pid 800] ioctl(4, LOOP_SET_FD, 3 [pid 805] memfd_create("syzkaller", 0 [pid 804] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 803] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 801] close(3 [pid 800] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 804] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 803] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 800] ioctl(4, LOOP_CLR_FD [pid 805] <... memfd_create resumed>) = 3 [pid 804] 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 803] 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 802] munmap(0x7f7bfe3d8000, 262144 [pid 801] <... close resumed>) = 0 [pid 800] <... ioctl resumed>) = 0 [pid 805] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 804] <... write resumed>) = 262144 [pid 803] <... write resumed>) = 262144 [pid 802] <... munmap resumed>) = 0 [pid 801] memfd_create("syzkaller", 0 [pid 804] munmap(0x7f7bfe3d8000, 262144 [pid 803] munmap(0x7f7bfe3d8000, 262144 [pid 802] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 805] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 804] <... munmap resumed>) = 0 [pid 803] <... munmap resumed>) = 0 [pid 802] <... openat resumed>) = 4 [pid 801] <... memfd_create resumed>) = 3 [pid 804] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 803] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 802] ioctl(4, LOOP_SET_FD, 3 [pid 804] <... openat resumed>) = 4 [pid 803] <... openat resumed>) = 4 [pid 802] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 804] ioctl(4, LOOP_SET_FD, 3 [pid 803] ioctl(4, LOOP_SET_FD, 3 [pid 802] ioctl(4, LOOP_CLR_FD [pid 800] ioctl(4, LOOP_SET_FD, 3 [pid 804] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 803] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 802] <... ioctl resumed>) = 0 [pid 800] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 804] ioctl(4, LOOP_CLR_FD [pid 803] ioctl(4, LOOP_CLR_FD [pid 800] close(4 [pid 804] <... ioctl resumed>) = 0 [pid 803] <... ioctl resumed>) = 0 [pid 800] <... close resumed>) = 0 [pid 800] close(3) = 0 [pid 800] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 802] ioctl(4, LOOP_SET_FD, 3 [pid 800] <... openat resumed>) = 3 [pid 802] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 800] ioctl(3, BLKSECDISCARD, [0, 0] [pid 802] close(4 [pid 800] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 802] <... close resumed>) = 0 [pid 800] exit_group(0 [pid 802] close(3 [pid 800] <... exit_group resumed>) = ? [pid 805] 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 801] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 805] <... write resumed>) = 262144 [pid 802] <... close resumed>) = 0 [pid 801] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 800] +++ exited with 0 +++ [pid 804] ioctl(4, LOOP_SET_FD, 3 [pid 803] ioctl(4, LOOP_SET_FD, 3 [pid 802] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 804] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 803] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 802] <... openat resumed>) = 3 [pid 804] close(4 [pid 803] close(4 [pid 802] ioctl(3, BLKSECDISCARD, [0, 0] [pid 804] <... close resumed>) = 0 [pid 803] <... close resumed>) = 0 [pid 802] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 804] close(3 [pid 803] close(3 [pid 802] exit_group(0 [pid 805] munmap(0x7f7bfe3d8000, 262144 [pid 804] <... close resumed>) = 0 [pid 803] <... close resumed>) = 0 [pid 801] 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 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=800, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 804] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 803] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 802] <... exit_group resumed>) = ? [pid 804] <... openat resumed>) = 3 [pid 803] <... openat resumed>) = 3 [pid 802] +++ exited with 0 +++ [pid 804] ioctl(3, BLKSECDISCARD, [0, 0] [pid 803] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=802, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 804] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 803] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 801] <... write resumed>) = 262144 [pid 805] <... munmap resumed>) = 0 [pid 804] exit_group(0 [pid 803] exit_group(0 [pid 801] munmap(0x7f7bfe3d8000, 262144 [pid 804] <... exit_group resumed>) = ? [pid 803] <... exit_group resumed>) = ? [pid 805] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 804] +++ exited with 0 +++ [pid 803] +++ exited with 0 +++ [pid 801] <... munmap resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 805] <... openat resumed>) = 4 [pid 801] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 305] <... openat resumed>) = 3 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 806 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=804, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=803, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] ioctl(3, LOOP_CLR_FD [pid 805] ioctl(4, LOOP_SET_FD, 3 [pid 801] <... openat resumed>) = 4 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 305] <... ioctl resumed>) = 0 [pid 805] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 801] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 806 attached [pid 305] close(3 [pid 308] <... restart_syscall resumed>) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 805] ioctl(4, LOOP_CLR_FD [pid 305] <... close resumed>) = 0 [pid 801] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 806] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 806] setpgid(0, 0) = 0 [pid 806] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 805] <... ioctl resumed>) = 0 [pid 801] ioctl(4, LOOP_CLR_FD [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 806] <... openat resumed>) = 3 [pid 806] write(3, "1000", 4 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] <... openat resumed>) = 3 [pid 309] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 801] <... ioctl resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 807 [pid 806] <... write resumed>) = 4 [pid 806] close(3) = 0 [pid 806] memfd_create("syzkaller", 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] <... ioctl resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 309] close(3 [pid 308] <... close resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 806] <... memfd_create resumed>) = 3 [pid 806] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 805] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 809 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 808 [pid 805] close(4 [pid 801] ioctl(4, LOOP_SET_FD, 3 [pid 805] <... close resumed>) = 0 [pid 801] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 805] close(3 [pid 801] close(4 [pid 806] 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 805] <... close resumed>) = 0 [pid 801] <... close resumed>) = 0 [pid 805] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 801] close(3) = 0 [pid 805] <... openat resumed>) = 3 [pid 801] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 805] ioctl(3, BLKSECDISCARD, [0, 0]./strace-static-x86_64: Process 807 attached [pid 801] <... openat resumed>) = 3 [pid 805] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 807] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 806] <... write resumed>) = 262144 [pid 807] <... prctl resumed>) = 0 [pid 805] exit_group(0) = ? [pid 801] ioctl(3, BLKSECDISCARD, [0, 0] [pid 807] setpgid(0, 0) = 0 [pid 807] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 808 attached [pid 805] +++ exited with 0 +++ [pid 801] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=805, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 801] exit_group(0 [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 808] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 801] <... exit_group resumed>) = ? [pid 807] <... openat resumed>) = 3 [pid 310] <... restart_syscall resumed>) = 0 [pid 808] <... prctl resumed>) = 0 [pid 808] setpgid(0, 0) = 0 [pid 808] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 807] write(3, "1000", 4) = 4 [pid 801] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=801, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 310] <... openat resumed>) = 3 [pid 307] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 307] ioctl(3, LOOP_CLR_FD [pid 310] <... ioctl resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 310] close(3 [pid 307] close(3) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] <... close resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 810 [pid 807] close(3) = 0 [pid 807] memfd_create("syzkaller", 0 [pid 808] <... openat resumed>) = 3 [pid 806] munmap(0x7f7bfe3d8000, 262144 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 811 [pid 806] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 809 attached [pid 809] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 808] write(3, "1000", 4) = 4 [pid 807] <... memfd_create resumed>) = 3 [pid 808] close(3) = 0 [pid 808] memfd_create("syzkaller", 0 [pid 809] <... prctl resumed>) = 0 [pid 809] setpgid(0, 0 [pid 808] <... memfd_create resumed>) = 3 [pid 807] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 806] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 809] <... setpgid resumed>) = 0 [pid 809] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 808] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 807] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 806] <... openat resumed>) = 4 [pid 809] <... openat resumed>) = 3 [pid 808] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 807] 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 806] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 810 attached [pid 809] write(3, "1000", 4 [pid 808] 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 806] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 809] <... write resumed>) = 4 [pid 806] ioctl(4, LOOP_CLR_FD [pid 810] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 809] close(3 [pid 806] <... ioctl resumed>) = 0 [pid 810] <... prctl resumed>) = 0 [pid 809] <... close resumed>) = 0 [pid 808] <... write resumed>) = 262144 ./strace-static-x86_64: Process 811 attached [pid 810] setpgid(0, 0 [pid 809] memfd_create("syzkaller", 0 [pid 811] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 810] <... setpgid resumed>) = 0 [pid 809] <... memfd_create resumed>) = 3 [pid 811] <... prctl resumed>) = 0 [pid 809] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 811] setpgid(0, 0 [pid 809] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 811] <... setpgid resumed>) = 0 [pid 810] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 809] 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 807] <... write resumed>) = 262144 [pid 811] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 810] <... openat resumed>) = 3 [pid 809] <... write resumed>) = 262144 [pid 808] munmap(0x7f7bfe3d8000, 262144 [pid 807] munmap(0x7f7bfe3d8000, 262144 [pid 806] ioctl(4, LOOP_SET_FD, 3 [pid 811] <... openat resumed>) = 3 [pid 810] write(3, "1000", 4 [pid 808] <... munmap resumed>) = 0 [pid 807] <... munmap resumed>) = 0 [pid 806] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 811] write(3, "1000", 4 [pid 809] munmap(0x7f7bfe3d8000, 262144 [pid 808] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 807] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 806] close(4 [pid 811] <... write resumed>) = 4 [pid 810] <... write resumed>) = 4 [pid 809] <... munmap resumed>) = 0 [pid 808] <... openat resumed>) = 4 [pid 807] <... openat resumed>) = 4 [pid 806] <... close resumed>) = 0 [pid 811] close(3 [pid 809] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 808] ioctl(4, LOOP_SET_FD, 3 [pid 807] ioctl(4, LOOP_SET_FD, 3 [pid 806] close(3 [pid 811] <... close resumed>) = 0 [pid 810] close(3 [pid 809] <... openat resumed>) = 4 [pid 808] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 807] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 806] <... close resumed>) = 0 [pid 811] memfd_create("syzkaller", 0 [pid 809] ioctl(4, LOOP_SET_FD, 3 [pid 808] ioctl(4, LOOP_CLR_FD [pid 807] ioctl(4, LOOP_CLR_FD [pid 806] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 811] <... memfd_create resumed>) = 3 [pid 810] <... close resumed>) = 0 [pid 809] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 808] <... ioctl resumed>) = 0 [pid 807] <... ioctl resumed>) = 0 [pid 806] <... openat resumed>) = 3 [pid 811] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 809] ioctl(4, LOOP_CLR_FD [pid 806] ioctl(3, BLKSECDISCARD, [0, 0] [pid 811] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 810] memfd_create("syzkaller", 0 [pid 809] <... ioctl resumed>) = 0 [pid 806] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 811] 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 806] exit_group(0 [pid 811] <... write resumed>) = 262144 [pid 810] <... memfd_create resumed>) = 3 [pid 808] ioctl(4, LOOP_SET_FD, 3 [pid 807] ioctl(4, LOOP_SET_FD, 3 [pid 806] <... exit_group resumed>) = ? [pid 811] munmap(0x7f7bfe3d8000, 262144 [pid 810] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 809] ioctl(4, LOOP_SET_FD, 3 [pid 808] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 807] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 806] +++ exited with 0 +++ [pid 811] <... munmap resumed>) = 0 [pid 809] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 808] close(4 [pid 807] close(4 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=806, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 811] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 809] close(4 [pid 808] <... close resumed>) = 0 [pid 807] <... close resumed>) = 0 [pid 811] <... openat resumed>) = 4 [pid 809] <... close resumed>) = 0 [pid 808] close(3 [pid 807] close(3 [pid 811] ioctl(4, LOOP_SET_FD, 3 [pid 810] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 809] close(3 [pid 808] <... close resumed>) = 0 [pid 807] <... close resumed>) = 0 [pid 811] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 809] <... close resumed>) = 0 [pid 808] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 807] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 811] ioctl(4, LOOP_CLR_FD [pid 809] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 808] <... openat resumed>) = 3 [pid 807] <... openat resumed>) = 3 [pid 811] <... ioctl resumed>) = 0 [pid 810] 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 809] <... openat resumed>) = 3 [pid 808] ioctl(3, BLKSECDISCARD, [0, 0] [pid 807] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 809] ioctl(3, BLKSECDISCARD, [0, 0] [pid 808] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 807] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] <... openat resumed>) = 3 [pid 809] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 808] exit_group(0 [pid 807] exit_group(0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 809] exit_group(0 [pid 808] <... exit_group resumed>) = ? [pid 807] <... exit_group resumed>) = ? [pid 306] <... ioctl resumed>) = 0 [pid 810] <... write resumed>) = 262144 [pid 809] <... exit_group resumed>) = ? [pid 808] +++ exited with 0 +++ [pid 807] +++ exited with 0 +++ [pid 306] close(3 [pid 811] ioctl(4, LOOP_SET_FD, 3 [pid 810] munmap(0x7f7bfe3d8000, 262144 [pid 809] +++ exited with 0 +++ [pid 306] <... close resumed>) = 0 [pid 811] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 811] close(4 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=807, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 811] <... close resumed>) = 0 [pid 810] <... munmap resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 812 [pid 811] close(3) = 0 [pid 810] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=809, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=808, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 811] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 811] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 810] <... openat resumed>) = 4 [pid 811] exit_group(0 [pid 309] <... restart_syscall resumed>) = 0 [pid 308] <... restart_syscall resumed>) = 0 [pid 811] <... exit_group resumed>) = ? [pid 811] +++ exited with 0 +++ [pid 810] ioctl(4, LOOP_SET_FD, 3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=811, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 810] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR./strace-static-x86_64: Process 812 attached [pid 812] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 812] setpgid(0, 0) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 309] <... openat resumed>) = 3 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 810] ioctl(4, LOOP_CLR_FD [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] ioctl(3, LOOP_CLR_FD [pid 812] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 310] <... openat resumed>) = 3 [pid 810] <... ioctl resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 309] <... ioctl resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 310] <... ioctl resumed>) = 0 [pid 309] close(3 [pid 308] close(3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 310] close(3 [pid 309] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 305] <... ioctl resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] close(3 [pid 812] write(3, "1000", 4) = 4 [pid 812] close(3) = 0 [pid 812] memfd_create("syzkaller", 0) = 3 [pid 812] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 305] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 815 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 813 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 814 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 816 [pid 810] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 810] close(4) = 0 [pid 810] close(3 [pid 812] 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 810] <... close resumed>) = 0 [pid 810] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 810] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) ./strace-static-x86_64: Process 813 attached [pid 813] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 810] exit_group(0 [pid 813] <... prctl resumed>) = 0 [pid 813] setpgid(0, 0./strace-static-x86_64: Process 814 attached [pid 810] <... exit_group resumed>) = ? [pid 813] <... setpgid resumed>) = 0 [pid 813] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 814] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 812] <... write resumed>) = 262144 [pid 810] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=810, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 813] <... openat resumed>) = 3 [pid 814] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 816 attached ./strace-static-x86_64: Process 815 attached [pid 813] write(3, "1000", 4 [pid 812] munmap(0x7f7bfe3d8000, 262144 [pid 307] <... restart_syscall resumed>) = 0 [pid 815] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 814] setpgid(0, 0 [pid 813] <... write resumed>) = 4 [pid 812] <... munmap resumed>) = 0 [pid 816] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 815] <... prctl resumed>) = 0 [pid 814] <... setpgid resumed>) = 0 [pid 813] close(3 [pid 812] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 816] <... prctl resumed>) = 0 [pid 815] setpgid(0, 0 [pid 814] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 813] <... close resumed>) = 0 [pid 812] <... openat resumed>) = 4 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 816] setpgid(0, 0 [pid 815] <... setpgid resumed>) = 0 [pid 814] <... openat resumed>) = 3 [pid 813] memfd_create("syzkaller", 0 [pid 812] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... openat resumed>) = 3 [pid 816] <... setpgid resumed>) = 0 [pid 815] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 814] write(3, "1000", 4 [pid 813] <... memfd_create resumed>) = 3 [pid 812] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] ioctl(3, LOOP_CLR_FD [pid 816] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 815] <... openat resumed>) = 3 [pid 814] <... write resumed>) = 4 [pid 813] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 812] ioctl(4, LOOP_CLR_FD [pid 307] <... ioctl resumed>) = 0 [pid 816] <... openat resumed>) = 3 [pid 815] write(3, "1000", 4 [pid 814] close(3 [pid 813] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 812] <... ioctl resumed>) = 0 [pid 307] close(3 [pid 816] write(3, "1000", 4 [pid 815] <... write resumed>) = 4 [pid 814] <... close resumed>) = 0 [pid 813] 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 307] <... close resumed>) = 0 [pid 816] <... write resumed>) = 4 [pid 816] close(3 [pid 815] close(3 [pid 814] memfd_create("syzkaller", 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 816] <... close resumed>) = 0 [pid 815] <... close resumed>) = 0 [pid 814] <... memfd_create resumed>) = 3 [pid 812] ioctl(4, LOOP_SET_FD, 3 [pid 815] memfd_create("syzkaller", 0 [pid 814] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 812] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 817 [pid 816] memfd_create("syzkaller", 0 [pid 815] <... memfd_create resumed>) = 3 [pid 814] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 813] <... write resumed>) = 262144 [pid 812] close(4 [pid 816] <... memfd_create resumed>) = 3 [pid 815] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 814] 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 813] munmap(0x7f7bfe3d8000, 262144 [pid 812] <... close resumed>) = 0 ./strace-static-x86_64: Process 817 attached [pid 816] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 815] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 814] <... write resumed>) = 262144 [pid 813] <... munmap resumed>) = 0 [pid 812] close(3 [pid 817] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 816] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 815] 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 814] munmap(0x7f7bfe3d8000, 262144 [pid 813] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 812] <... close resumed>) = 0 [pid 815] <... write resumed>) = 262144 [pid 814] <... munmap resumed>) = 0 [pid 813] <... openat resumed>) = 4 [pid 812] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 815] munmap(0x7f7bfe3d8000, 262144 [pid 814] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 813] ioctl(4, LOOP_SET_FD, 3 [pid 812] <... openat resumed>) = 3 [pid 817] <... prctl resumed>) = 0 [pid 816] 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 815] <... munmap resumed>) = 0 [pid 814] <... openat resumed>) = 4 [pid 813] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 812] ioctl(3, BLKSECDISCARD, [0, 0] [pid 815] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 814] ioctl(4, LOOP_SET_FD, 3 [pid 813] ioctl(4, LOOP_CLR_FD [pid 812] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 815] <... openat resumed>) = 4 [pid 814] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 813] <... ioctl resumed>) = 0 [pid 812] exit_group(0 [pid 815] ioctl(4, LOOP_SET_FD, 3 [pid 814] ioctl(4, LOOP_CLR_FD [pid 812] <... exit_group resumed>) = ? [pid 815] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 814] <... ioctl resumed>) = 0 [pid 812] +++ exited with 0 +++ [pid 815] ioctl(4, LOOP_CLR_FD [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=812, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 815] <... ioctl resumed>) = 0 [pid 817] setpgid(0, 0 [pid 816] <... write resumed>) = 262144 [pid 817] <... setpgid resumed>) = 0 [pid 816] munmap(0x7f7bfe3d8000, 262144 [pid 817] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 816] <... munmap resumed>) = 0 [pid 813] ioctl(4, LOOP_SET_FD, 3 [pid 817] <... openat resumed>) = 3 [pid 816] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 815] ioctl(4, LOOP_SET_FD, 3 [pid 814] ioctl(4, LOOP_SET_FD, 3 [pid 813] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 817] write(3, "1000", 4 [pid 816] <... openat resumed>) = 4 [pid 815] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 814] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 813] close(4 [pid 817] <... write resumed>) = 4 [pid 816] ioctl(4, LOOP_SET_FD, 3 [pid 815] close(4 [pid 814] close(4 [pid 813] <... close resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 817] close(3 [pid 816] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 815] <... close resumed>) = 0 [pid 814] <... close resumed>) = 0 [pid 813] close(3 [pid 306] <... openat resumed>) = 3 [pid 817] <... close resumed>) = 0 [pid 816] ioctl(4, LOOP_CLR_FD [pid 815] close(3 [pid 814] close(3 [pid 817] memfd_create("syzkaller", 0 [pid 816] <... ioctl resumed>) = 0 [pid 813] <... close resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 817] <... memfd_create resumed>) = 3 [pid 817] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 815] <... close resumed>) = 0 [pid 817] 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 815] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 814] <... close resumed>) = 0 [pid 813] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 306] <... ioctl resumed>) = 0 [pid 817] <... write resumed>) = 262144 [pid 816] ioctl(4, LOOP_SET_FD, 3 [pid 815] <... openat resumed>) = 3 [pid 814] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 813] <... openat resumed>) = 3 [pid 306] close(3 [pid 817] munmap(0x7f7bfe3d8000, 262144 [pid 816] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 815] ioctl(3, BLKSECDISCARD, [0, 0] [pid 814] <... openat resumed>) = 3 [pid 813] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] <... close resumed>) = 0 [pid 817] <... munmap resumed>) = 0 [pid 816] close(4 [pid 815] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 814] ioctl(3, BLKSECDISCARD, [0, 0] [pid 813] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 817] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 816] <... close resumed>) = 0 [pid 815] exit_group(0 [pid 814] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 813] exit_group(0 [pid 817] <... openat resumed>) = 4 [pid 816] close(3 [pid 815] <... exit_group resumed>) = ? [pid 814] exit_group(0 [pid 813] <... exit_group resumed>) = ? [pid 817] ioctl(4, LOOP_SET_FD, 3 [pid 816] <... close resumed>) = 0 [pid 817] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 816] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 815] +++ exited with 0 +++ [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 818 [pid 817] ioctl(4, LOOP_CLR_FD [pid 816] <... openat resumed>) = 3 [pid 814] <... exit_group resumed>) = ? [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=815, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 817] <... ioctl resumed>) = 0 [pid 816] ioctl(3, BLKSECDISCARD, [0, 0] [pid 813] +++ exited with 0 +++ [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 816] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] <... restart_syscall resumed>) = 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=813, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 816] exit_group(0 [pid 814] +++ exited with 0 +++ [pid 816] <... exit_group resumed>) = ? [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=814, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 817] ioctl(4, LOOP_SET_FD, 3 [pid 816] +++ exited with 0 +++ [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 817] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] <... openat resumed>) = 3 [pid 309] <... openat resumed>) = 3 [pid 817] close(4 [pid 310] ioctl(3, LOOP_CLR_FD [pid 309] ioctl(3, LOOP_CLR_FD [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=816, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 817] <... close resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 817] close(3 [pid 310] close(3 [pid 309] close(3 [pid 305] <... restart_syscall resumed>) = 0 [pid 817] <... close resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 817] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 817] <... openat resumed>) = 3 [pid 308] <... openat resumed>) = 3 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 817] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 819 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 820 [pid 308] ioctl(3, LOOP_CLR_FD [pid 305] <... openat resumed>) = 3 [pid 817] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] <... ioctl resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 818 attached [pid 817] exit_group(0 [pid 308] close(3 [pid 305] <... ioctl resumed>) = 0 [pid 818] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 817] <... exit_group resumed>) = ? [pid 308] <... close resumed>) = 0 [pid 305] close(3./strace-static-x86_64: Process 819 attached [pid 818] <... prctl resumed>) = 0 [pid 817] +++ exited with 0 +++ [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... close resumed>) = 0 [pid 818] setpgid(0, 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 819] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 818] <... setpgid resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 821 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=817, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 819] <... prctl resumed>) = 0 [pid 818] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 822 [pid 819] setpgid(0, 0 [pid 818] <... openat resumed>) = 3 [pid 307] <... restart_syscall resumed>) = 0 [pid 819] <... setpgid resumed>) = 0 [pid 818] write(3, "1000", 4 [pid 819] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 818] <... write resumed>) = 4 [pid 819] <... openat resumed>) = 3 [pid 818] close(3 [pid 819] write(3, "1000", 4 [pid 818] <... close resumed>) = 0 [pid 819] <... write resumed>) = 4 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 819] close(3 [pid 818] memfd_create("syzkaller", 0 [pid 307] <... openat resumed>) = 3 [pid 819] <... close resumed>) = 0 [pid 818] <... memfd_create resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 822 attached [pid 819] memfd_create("syzkaller", 0 [pid 818] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 307] <... ioctl resumed>) = 0 [pid 822] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 819] <... memfd_create resumed>) = 3 [pid 818] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 307] close(3 [pid 822] <... prctl resumed>) = 0 [pid 819] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 820 attached [pid 820] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 818] 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 819] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 307] <... close resumed>) = 0 [pid 822] setpgid(0, 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 821 attached [pid 820] setpgid(0, 0) = 0 [pid 821] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 820] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 823 [pid 821] <... prctl resumed>) = 0 [pid 820] <... openat resumed>) = 3 [pid 821] setpgid(0, 0 [pid 820] write(3, "1000", 4 [pid 821] <... setpgid resumed>) = 0 [pid 820] <... write resumed>) = 4 [pid 821] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 820] close(3 [pid 821] <... openat resumed>) = 3 [pid 820] <... close resumed>) = 0 [pid 819] 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 818] <... write resumed>) = 262144 [pid 822] <... setpgid resumed>) = 0 [pid 821] write(3, "1000", 4 [pid 820] memfd_create("syzkaller", 0 [pid 818] munmap(0x7f7bfe3d8000, 262144 [pid 821] <... write resumed>) = 4 [pid 820] <... memfd_create resumed>) = 3 [pid 818] <... munmap resumed>) = 0 [pid 821] close(3 [pid 820] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 819] <... write resumed>) = 262144 [pid 818] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 822] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 821] <... close resumed>) = 0 [pid 820] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 819] munmap(0x7f7bfe3d8000, 262144 [pid 818] <... openat resumed>) = 4 [pid 822] <... openat resumed>) = 3 [pid 821] memfd_create("syzkaller", 0 [pid 820] 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 819] <... munmap resumed>) = 0 [pid 818] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 823 attached [pid 822] write(3, "1000", 4 [pid 821] <... memfd_create resumed>) = 3 [pid 819] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 818] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 823] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 822] <... write resumed>) = 4 [pid 821] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 819] <... openat resumed>) = 4 [pid 818] ioctl(4, LOOP_CLR_FD [pid 823] <... prctl resumed>) = 0 [pid 822] close(3 [pid 821] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 820] <... write resumed>) = 262144 [pid 819] ioctl(4, LOOP_SET_FD, 3 [pid 818] <... ioctl resumed>) = 0 [pid 823] setpgid(0, 0 [pid 822] <... close resumed>) = 0 [pid 821] 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 819] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 823] <... setpgid resumed>) = 0 [pid 822] memfd_create("syzkaller", 0 [pid 821] <... write resumed>) = 262144 [pid 820] munmap(0x7f7bfe3d8000, 262144 [pid 819] ioctl(4, LOOP_CLR_FD [pid 823] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 822] <... memfd_create resumed>) = 3 [pid 821] munmap(0x7f7bfe3d8000, 262144 [pid 820] <... munmap resumed>) = 0 [pid 819] <... ioctl resumed>) = 0 [pid 818] ioctl(4, LOOP_SET_FD, 3 [pid 823] <... openat resumed>) = 3 [pid 822] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 821] <... munmap resumed>) = 0 [pid 820] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 818] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 823] write(3, "1000", 4 [pid 822] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 821] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 820] <... openat resumed>) = 4 [pid 818] close(4 [pid 823] <... write resumed>) = 4 [pid 821] <... openat resumed>) = 4 [pid 820] ioctl(4, LOOP_SET_FD, 3 [pid 823] close(3 [pid 821] ioctl(4, LOOP_SET_FD, 3 [pid 820] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 823] <... close resumed>) = 0 [pid 821] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 820] ioctl(4, LOOP_CLR_FD [pid 823] memfd_create("syzkaller", 0 [pid 822] 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 821] ioctl(4, LOOP_CLR_FD [pid 820] <... ioctl resumed>) = 0 [pid 818] <... close resumed>) = 0 [pid 823] <... memfd_create resumed>) = 3 [pid 821] <... ioctl resumed>) = 0 [pid 823] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 822] <... write resumed>) = 262144 [pid 819] ioctl(4, LOOP_SET_FD, 3 [pid 818] close(3 [pid 823] 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 822] munmap(0x7f7bfe3d8000, 262144 [pid 819] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 823] <... write resumed>) = 262144 [pid 822] <... munmap resumed>) = 0 [pid 821] ioctl(4, LOOP_SET_FD, 3 [pid 820] ioctl(4, LOOP_SET_FD, 3 [pid 819] close(4 [pid 818] <... close resumed>) = 0 [pid 823] munmap(0x7f7bfe3d8000, 262144 [pid 822] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 821] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 820] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 819] <... close resumed>) = 0 [pid 818] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 823] <... munmap resumed>) = 0 [pid 821] close(4 [pid 820] close(4 [pid 823] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 822] <... openat resumed>) = 4 [pid 821] <... close resumed>) = 0 [pid 820] <... close resumed>) = 0 [pid 819] close(3 [pid 818] <... openat resumed>) = 3 [pid 823] <... openat resumed>) = 4 [pid 822] ioctl(4, LOOP_SET_FD, 3 [pid 821] close(3 [pid 820] close(3 [pid 823] ioctl(4, LOOP_SET_FD, 3 [pid 822] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 821] <... close resumed>) = 0 [pid 820] <... close resumed>) = 0 [pid 819] <... close resumed>) = 0 [pid 818] ioctl(3, BLKSECDISCARD, [0, 0] [pid 823] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 822] ioctl(4, LOOP_CLR_FD [pid 821] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 820] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 819] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 818] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 823] ioctl(4, LOOP_CLR_FD [pid 822] <... ioctl resumed>) = 0 [pid 821] <... openat resumed>) = 3 [pid 820] <... openat resumed>) = 3 [pid 819] <... openat resumed>) = 3 [pid 818] exit_group(0 [pid 823] <... ioctl resumed>) = 0 [pid 821] ioctl(3, BLKSECDISCARD, [0, 0] [pid 820] ioctl(3, BLKSECDISCARD, [0, 0] [pid 819] ioctl(3, BLKSECDISCARD, [0, 0] [pid 818] <... exit_group resumed>) = ? [pid 821] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 820] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 819] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 821] exit_group(0 [pid 820] exit_group(0 [pid 818] +++ exited with 0 +++ [pid 821] <... exit_group resumed>) = ? [pid 820] <... exit_group resumed>) = ? [pid 819] exit_group(0 [pid 822] ioctl(4, LOOP_SET_FD, 3 [pid 821] +++ exited with 0 +++ [pid 820] +++ exited with 0 +++ [pid 819] <... exit_group resumed>) = ? [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=818, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 823] ioctl(4, LOOP_SET_FD, 3 [pid 822] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=820, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=821, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 823] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 819] +++ exited with 0 +++ [pid 822] close(4 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 823] close(4 [pid 822] <... close resumed>) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 308] <... restart_syscall resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 823] <... close resumed>) = 0 [pid 822] close(3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=819, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 823] close(3 [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 823] <... close resumed>) = 0 [pid 822] <... close resumed>) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 823] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 822] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] <... openat resumed>) = 3 [pid 308] <... openat resumed>) = 3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 823] <... openat resumed>) = 3 [pid 822] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] ioctl(3, LOOP_CLR_FD [pid 823] ioctl(3, BLKSECDISCARD, [0, 0] [pid 822] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 309] <... ioctl resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 823] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 822] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] <... openat resumed>) = 3 [pid 309] close(3 [pid 308] close(3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 823] exit_group(0 [pid 822] exit_group(0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 309] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 823] <... exit_group resumed>) = ? [pid 822] <... exit_group resumed>) = ? [pid 310] <... ioctl resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] close(3 [pid 823] +++ exited with 0 +++ [pid 822] +++ exited with 0 +++ [pid 310] close(3 [pid 306] <... close resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 824 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 825 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=823, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [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=822, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 827 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 826 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 305] close(3) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] <... openat resumed>) = 3 ./strace-static-x86_64: Process 824 attached [pid 307] ioctl(3, LOOP_CLR_FD [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 828 [pid 824] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 307] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 826 attached [pid 824] <... prctl resumed>) = 0 [pid 307] close(3 [pid 824] setpgid(0, 0 [pid 307] <... close resumed>) = 0 [pid 826] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 828 attached ) = 0 [pid 824] <... setpgid resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 827 attached [pid 826] setpgid(0, 0 [pid 824] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 828] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 826] <... setpgid resumed>) = 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 829 [pid 828] <... prctl resumed>) = 0 [pid 826] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 824] <... openat resumed>) = 3 [pid 824] write(3, "1000", 4 [pid 828] setpgid(0, 0 [pid 826] <... openat resumed>) = 3 [pid 824] <... write resumed>) = 4 [pid 828] <... setpgid resumed>) = 0 [pid 826] write(3, "1000", 4 [pid 824] close(3 [pid 828] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 826] <... write resumed>) = 4 [pid 824] <... close resumed>) = 0 [pid 826] close(3 [pid 824] memfd_create("syzkaller", 0) = 3 ./strace-static-x86_64: Process 825 attached [pid 828] <... openat resumed>) = 3 [pid 827] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 826] <... close resumed>) = 0 [pid 824] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 828] write(3, "1000", 4 [pid 827] <... prctl resumed>) = 0 [pid 826] memfd_create("syzkaller", 0 [pid 824] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 825] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 827] setpgid(0, 0) = 0 [pid 827] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 828] <... write resumed>) = 4 [pid 827] write(3, "1000", 4 [pid 826] <... memfd_create resumed>) = 3 [pid 825] <... prctl resumed>) = 0 [pid 824] 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 827] <... write resumed>) = 4 [pid 827] close(3) = 0 [pid 826] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 827] memfd_create("syzkaller", 0 [pid 826] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 828] close(3 [pid 827] <... memfd_create resumed>) = 3 [pid 827] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 828] <... close resumed>) = 0 [pid 827] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 828] memfd_create("syzkaller", 0 [pid 827] 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 826] 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 825] setpgid(0, 0 [pid 824] <... write resumed>) = 262144 [pid 828] <... memfd_create resumed>) = 3 [pid 827] <... write resumed>) = 262144 [pid 826] <... write resumed>) = 262144 [pid 825] <... setpgid resumed>) = 0 [pid 824] munmap(0x7f7bfe3d8000, 262144./strace-static-x86_64: Process 829 attached [pid 828] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 826] munmap(0x7f7bfe3d8000, 262144 [pid 825] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 824] <... munmap resumed>) = 0 [pid 829] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 828] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 826] <... munmap resumed>) = 0 [pid 825] <... openat resumed>) = 3 [pid 824] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 829] <... prctl resumed>) = 0 [pid 829] setpgid(0, 0 [pid 827] munmap(0x7f7bfe3d8000, 262144 [pid 829] <... setpgid resumed>) = 0 [pid 827] <... munmap resumed>) = 0 [pid 829] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 827] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 829] write(3, "1000", 4 [pid 828] 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 827] <... openat resumed>) = 4 [pid 826] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 825] write(3, "1000", 4 [pid 824] <... openat resumed>) = 4 [pid 829] <... write resumed>) = 4 [pid 827] ioctl(4, LOOP_SET_FD, 3 [pid 824] ioctl(4, LOOP_SET_FD, 3 [pid 825] <... write resumed>) = 4 [pid 829] close(3 [pid 827] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 824] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 825] close(3 [pid 829] <... close resumed>) = 0 [pid 827] ioctl(4, LOOP_CLR_FD [pid 826] <... openat resumed>) = 4 [pid 824] ioctl(4, LOOP_CLR_FD [pid 828] <... write resumed>) = 262144 [pid 826] ioctl(4, LOOP_SET_FD, 3 [pid 825] <... close resumed>) = 0 [pid 824] <... ioctl resumed>) = 0 [pid 828] munmap(0x7f7bfe3d8000, 262144 [pid 826] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 829] memfd_create("syzkaller", 0 [pid 827] <... ioctl resumed>) = 0 [pid 826] ioctl(4, LOOP_CLR_FD [pid 825] memfd_create("syzkaller", 0 [pid 829] <... memfd_create resumed>) = 3 [pid 828] <... munmap resumed>) = 0 [pid 826] <... ioctl resumed>) = 0 [pid 825] <... memfd_create resumed>) = 3 [pid 829] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 828] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 825] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 829] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 828] <... openat resumed>) = 4 [pid 825] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 829] 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 827] ioctl(4, LOOP_SET_FD, 3 [pid 829] munmap(0x7f7bfe3d8000, 262144 [pid 827] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 829] <... munmap resumed>) = 0 [pid 827] close(4 [pid 829] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 827] <... close resumed>) = 0 [pid 829] <... openat resumed>) = 4 [pid 827] close(3 [pid 829] ioctl(4, LOOP_SET_FD, 3 [pid 827] <... close resumed>) = 0 [pid 824] ioctl(4, LOOP_SET_FD, 3 [pid 829] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 827] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 824] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 826] ioctl(4, LOOP_SET_FD, 3 [pid 829] ioctl(4, LOOP_CLR_FD [pid 827] <... openat resumed>) = 3 [pid 829] <... ioctl resumed>) = 0 [pid 827] ioctl(3, BLKSECDISCARD, [0, 0] [pid 826] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 825] 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 828] ioctl(4, LOOP_SET_FD, 3 [pid 824] close(4 [pid 827] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 826] close(4 [pid 824] <... close resumed>) = 0 [pid 828] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 827] exit_group(0 [pid 824] close(3 [pid 828] ioctl(4, LOOP_CLR_FD [pid 827] <... exit_group resumed>) = ? [pid 826] <... close resumed>) = 0 [pid 825] <... write resumed>) = 262144 [pid 828] <... ioctl resumed>) = 0 [pid 827] +++ exited with 0 +++ [pid 826] close(3 [pid 825] munmap(0x7f7bfe3d8000, 262144 [pid 824] <... close resumed>) = 0 [pid 829] ioctl(4, LOOP_SET_FD, 3 [pid 824] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 829] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=827, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 829] close(4 [pid 824] <... openat resumed>) = 3 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 829] <... close resumed>) = 0 [pid 826] <... close resumed>) = 0 [pid 825] <... munmap resumed>) = 0 [pid 824] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] <... openat resumed>) = 3 [pid 829] close(3 [pid 826] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 825] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 824] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] ioctl(3, LOOP_CLR_FD [pid 829] <... close resumed>) = 0 [pid 826] <... openat resumed>) = 3 [pid 825] <... openat resumed>) = 4 [pid 824] exit_group(0 [pid 310] <... ioctl resumed>) = 0 [pid 829] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 828] ioctl(4, LOOP_SET_FD, 3 [pid 826] ioctl(3, BLKSECDISCARD, [0, 0] [pid 825] ioctl(4, LOOP_SET_FD, 3 [pid 824] <... exit_group resumed>) = ? [pid 310] close(3 [pid 829] <... openat resumed>) = 3 [pid 828] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 826] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 825] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] <... close resumed>) = 0 [pid 829] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 829] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 828] close(4 [pid 826] exit_group(0 [pid 825] ioctl(4, LOOP_CLR_FD [pid 824] +++ exited with 0 +++ [pid 829] exit_group(0 [pid 828] <... close resumed>) = 0 [pid 826] <... exit_group resumed>) = ? [pid 825] <... ioctl resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 830 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=824, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 829] <... exit_group resumed>) = ? [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 829] +++ exited with 0 +++ [pid 828] close(3 [pid 826] +++ exited with 0 +++ [pid 309] <... restart_syscall resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 828] <... close resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 828] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] <... ioctl resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=829, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 828] <... openat resumed>) = 3 [pid 309] close(3 [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=826, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 828] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] <... close resumed>) = 0 [pid 307] <... restart_syscall resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 830 attached [pid 828] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 825] ioctl(4, LOOP_SET_FD, 3 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] <... restart_syscall resumed>) = 0 [pid 830] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 828] exit_group(0 [pid 825] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 830] <... prctl resumed>) = 0 [pid 828] <... exit_group resumed>) = ? [pid 825] close(4 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 831 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR./strace-static-x86_64: Process 831 attached [pid 828] +++ exited with 0 +++ [pid 830] setpgid(0, 0 [pid 825] <... close resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=828, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 830] <... setpgid resumed>) = 0 [pid 825] close(3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 306] <... openat resumed>) = 3 [pid 305] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 825] <... close resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 305] <... openat resumed>) = 3 [pid 830] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 825] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 307] close(3 [pid 306] <... ioctl resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 825] <... openat resumed>) = 3 [pid 307] <... close resumed>) = 0 [pid 306] close(3 [pid 305] <... ioctl resumed>) = 0 [pid 830] <... openat resumed>) = 3 [pid 825] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] <... close resumed>) = 0 [pid 305] close(3 [pid 830] write(3, "1000", 4 [pid 825] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] <... close resumed>) = 0 [pid 830] <... write resumed>) = 4 [pid 825] exit_group(0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 830] close(3 [pid 825] <... exit_group resumed>) = ? [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 832 [pid 830] <... close resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 834 [pid 825] +++ exited with 0 +++ [pid 830] memfd_create("syzkaller", 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 833 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=825, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 830] <... memfd_create resumed>) = 3 [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 830] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 308] <... restart_syscall resumed>) = 0 [pid 830] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 831] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 831] <... prctl resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 831] setpgid(0, 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 831] <... setpgid resumed>) = 0 [pid 830] 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 308] <... ioctl resumed>) = 0 [pid 831] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] close(3 [pid 831] <... openat resumed>) = 3 [pid 308] <... close resumed>) = 0 [pid 831] write(3, "1000", 4 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 831] <... write resumed>) = 4 [pid 830] <... write resumed>) = 262144 [pid 831] close(3 [pid 830] munmap(0x7f7bfe3d8000, 262144 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 835 ./strace-static-x86_64: Process 834 attached [pid 831] <... close resumed>) = 0 [pid 830] <... munmap resumed>) = 0 [pid 834] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 831] memfd_create("syzkaller", 0 [pid 830] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 834] <... prctl resumed>) = 0 [pid 831] <... memfd_create resumed>) = 3 [pid 830] <... openat resumed>) = 4 [pid 834] setpgid(0, 0 [pid 831] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 830] ioctl(4, LOOP_SET_FD, 3 [pid 834] <... setpgid resumed>) = 0 [pid 831] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 830] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 833 attached [pid 834] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 831] 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 830] ioctl(4, LOOP_CLR_FD [pid 834] <... openat resumed>) = 3 [pid 833] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 831] <... write resumed>) = 262144 [pid 830] <... ioctl resumed>) = 0 [pid 834] write(3, "1000", 4 [pid 833] <... prctl resumed>) = 0 [pid 834] <... write resumed>) = 4 [pid 833] setpgid(0, 0 [pid 834] close(3 [pid 833] <... setpgid resumed>) = 0 [pid 834] <... close resumed>) = 0 [pid 833] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 834] memfd_create("syzkaller", 0 [pid 833] <... openat resumed>) = 3 [pid 834] <... memfd_create resumed>) = 3 [pid 833] write(3, "1000", 4 [pid 831] munmap(0x7f7bfe3d8000, 262144 [pid 834] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 833] <... write resumed>) = 4 [pid 831] <... munmap resumed>) = 0 [pid 830] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 835 attached [pid 834] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 833] close(3 [pid 831] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 830] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 835] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 831] <... openat resumed>) = 4 [pid 835] <... prctl resumed>) = 0 [pid 831] ioctl(4, LOOP_SET_FD, 3 [pid 835] setpgid(0, 0 [pid 834] 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 831] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 830] close(4 [pid 835] <... setpgid resumed>) = 0 [pid 833] <... close resumed>) = 0 [pid 831] ioctl(4, LOOP_CLR_FD [pid 835] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 831] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 832 attached [pid 835] <... openat resumed>) = 3 [pid 834] <... write resumed>) = 262144 [pid 830] <... close resumed>) = 0 [pid 833] memfd_create("syzkaller", 0 [pid 835] write(3, "1000", 4 [pid 834] munmap(0x7f7bfe3d8000, 262144 [pid 833] <... memfd_create resumed>) = 3 [pid 832] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 830] close(3 [pid 835] <... write resumed>) = 4 [pid 834] <... munmap resumed>) = 0 [pid 832] <... prctl resumed>) = 0 [pid 835] close(3 [pid 832] setpgid(0, 0 [pid 835] <... close resumed>) = 0 [pid 834] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 833] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 832] <... setpgid resumed>) = 0 [pid 831] ioctl(4, LOOP_SET_FD, 3 [pid 830] <... close resumed>) = 0 [pid 835] memfd_create("syzkaller", 0 [pid 834] <... openat resumed>) = 4 [pid 833] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 832] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 831] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 830] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 835] <... memfd_create resumed>) = 3 [pid 834] ioctl(4, LOOP_SET_FD, 3 [pid 832] <... openat resumed>) = 3 [pid 831] close(4 [pid 835] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 832] write(3, "1000", 4 [pid 831] <... close resumed>) = 0 [pid 835] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 834] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 833] 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 832] <... write resumed>) = 4 [pid 831] close(3 [pid 830] <... openat resumed>) = 3 [pid 835] 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 834] ioctl(4, LOOP_CLR_FD [pid 833] <... write resumed>) = 262144 [pid 832] close(3 [pid 831] <... close resumed>) = 0 [pid 835] <... write resumed>) = 262144 [pid 834] <... ioctl resumed>) = 0 [pid 832] <... close resumed>) = 0 [pid 831] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 830] ioctl(3, BLKSECDISCARD, [0, 0] [pid 835] munmap(0x7f7bfe3d8000, 262144 [pid 832] memfd_create("syzkaller", 0 [pid 831] <... openat resumed>) = 3 [pid 835] <... munmap resumed>) = 0 [pid 833] munmap(0x7f7bfe3d8000, 262144 [pid 832] <... memfd_create resumed>) = 3 [pid 831] ioctl(3, BLKSECDISCARD, [0, 0] [pid 830] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 835] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 832] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 831] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 835] <... openat resumed>) = 4 [pid 833] <... munmap resumed>) = 0 [pid 832] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 831] exit_group(0 [pid 830] exit_group(0 [pid 835] ioctl(4, LOOP_SET_FD, 3 [pid 834] ioctl(4, LOOP_SET_FD, 3 [pid 833] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 832] 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 831] <... exit_group resumed>) = ? [pid 830] <... exit_group resumed>) = ? [pid 834] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 833] <... openat resumed>) = 4 [pid 830] +++ exited with 0 +++ [pid 831] +++ exited with 0 +++ [pid 834] close(4 [pid 833] ioctl(4, LOOP_SET_FD, 3 [pid 834] <... close resumed>) = 0 [pid 833] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=830, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=831, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 834] close(3 [pid 833] ioctl(4, LOOP_CLR_FD [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 835] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 834] <... close resumed>) = 0 [pid 833] <... ioctl resumed>) = 0 [pid 835] ioctl(4, LOOP_CLR_FD [pid 834] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] <... restart_syscall resumed>) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 832] <... write resumed>) = 262144 [pid 835] <... ioctl resumed>) = 0 [pid 834] <... openat resumed>) = 3 [pid 832] munmap(0x7f7bfe3d8000, 262144 [pid 834] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 834] exit_group(0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 834] <... exit_group resumed>) = ? [pid 832] <... munmap resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 834] +++ exited with 0 +++ [pid 310] ioctl(3, LOOP_CLR_FD [pid 309] <... openat resumed>) = 3 [pid 832] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 833] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... ioctl resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=834, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 835] ioctl(4, LOOP_SET_FD, 3 [pid 833] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 832] <... openat resumed>) = 4 [pid 310] close(3 [pid 309] <... ioctl resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 835] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 833] close(4 [pid 832] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... close resumed>) = 0 [pid 309] close(3 [pid 305] <... restart_syscall resumed>) = 0 [pid 833] <... close resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] <... close resumed>) = 0 [pid 835] close(4 [pid 833] close(3 [pid 832] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 835] <... close resumed>) = 0 [pid 833] <... close resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 835] close(3 [pid 833] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 832] ioctl(4, LOOP_CLR_FD [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 836 [pid 833] <... openat resumed>) = 3 [pid 833] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 833] exit_group(0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 837 [pid 833] <... exit_group resumed>) = ? [pid 305] <... openat resumed>) = 3 [pid 833] +++ exited with 0 +++ [pid 835] <... close resumed>) = 0 [pid 832] <... ioctl resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 835] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=833, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] <... ioctl resumed>) = 0 [pid 835] <... openat resumed>) = 3 [pid 305] close(3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 305] <... close resumed>) = 0 [pid 835] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] <... openat resumed>) = 3 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 836 attached [pid 835] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 836] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 835] exit_group(0 [pid 832] ioctl(4, LOOP_SET_FD, 3 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 839 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 838 [pid 836] <... prctl resumed>) = 0 [pid 835] <... exit_group resumed>) = ? [pid 832] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 836] setpgid(0, 0 [pid 832] close(4 [pid 836] <... setpgid resumed>) = 0 [pid 832] <... close resumed>) = 0 [pid 836] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 832] close(3 [pid 836] <... openat resumed>) = 3 [pid 836] write(3, "1000", 4 [pid 835] +++ exited with 0 +++ [pid 836] <... write resumed>) = 4 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=835, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 836] close(3 [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 836] <... close resumed>) = 0 [pid 836] memfd_create("syzkaller", 0) = 3 [pid 308] <... restart_syscall resumed>) = 0 [pid 836] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 837 attached ) = 0x7f7bfe3d8000 [pid 837] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 836] 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 832] <... close resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 837] <... prctl resumed>) = 0 [pid 832] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] <... openat resumed>) = 3 [pid 837] setpgid(0, 0 [pid 836] <... write resumed>) = 262144 [pid 832] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 839 attached [pid 837] <... setpgid resumed>) = 0 [pid 832] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] <... ioctl resumed>) = 0 [pid 839] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 837] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 832] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] close(3 [pid 839] <... prctl resumed>) = 0 [pid 837] <... openat resumed>) = 3 [pid 832] exit_group(0 [pid 308] <... close resumed>) = 0 [pid 839] setpgid(0, 0 [pid 837] write(3, "1000", 4 [pid 832] <... exit_group resumed>) = ? [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 839] <... setpgid resumed>) = 0 [pid 837] <... write resumed>) = 4 [pid 839] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 837] close(3 [pid 839] <... openat resumed>) = 3 [pid 837] <... close resumed>) = 0 [pid 839] write(3, "1000", 4 [pid 837] memfd_create("syzkaller", 0 [pid 836] munmap(0x7f7bfe3d8000, 262144 [pid 839] <... write resumed>) = 4 [pid 837] <... memfd_create resumed>) = 3 [pid 836] <... munmap resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 840 [pid 839] close(3 [pid 837] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 836] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 832] +++ exited with 0 +++ [pid 839] <... close resumed>) = 0 [pid 837] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 836] <... openat resumed>) = 4 ./strace-static-x86_64: Process 838 attached [pid 839] memfd_create("syzkaller", 0 [pid 837] 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 836] ioctl(4, LOOP_SET_FD, 3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=832, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 839] <... memfd_create resumed>) = 3 [pid 838] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 837] <... write resumed>) = 262144 [pid 836] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 839] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 836] ioctl(4, LOOP_CLR_FD [pid 307] <... openat resumed>) = 3 [pid 839] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 837] munmap(0x7f7bfe3d8000, 262144 [pid 836] <... ioctl resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 840 attached [pid 839] 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 838] <... prctl resumed>) = 0 [pid 837] <... munmap resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 840] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 838] setpgid(0, 0 [pid 837] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] close(3 [pid 840] <... prctl resumed>) = 0 [pid 838] <... setpgid resumed>) = 0 [pid 837] <... openat resumed>) = 4 [pid 307] <... close resumed>) = 0 [pid 840] setpgid(0, 0 [pid 837] ioctl(4, LOOP_SET_FD, 3 [pid 836] ioctl(4, LOOP_SET_FD, 3 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 840] <... setpgid resumed>) = 0 [pid 839] <... write resumed>) = 262144 [pid 838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 837] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 836] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 840] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 839] munmap(0x7f7bfe3d8000, 262144 [pid 837] ioctl(4, LOOP_CLR_FD [pid 836] close(4 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 841 [pid 840] <... openat resumed>) = 3 [pid 839] <... munmap resumed>) = 0 [pid 838] <... openat resumed>) = 3 [pid 837] <... ioctl resumed>) = 0 [pid 836] <... close resumed>) = 0 [pid 840] write(3, "1000", 4 [pid 839] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 838] write(3, "1000", 4 [pid 836] close(3 [pid 840] <... write resumed>) = 4 [pid 839] <... openat resumed>) = 4 [pid 838] <... write resumed>) = 4 [pid 836] <... close resumed>) = 0 [pid 840] close(3 [pid 839] ioctl(4, LOOP_SET_FD, 3 [pid 838] close(3 [pid 836] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 840] <... close resumed>) = 0 [pid 839] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 836] <... openat resumed>) = 3 [pid 840] memfd_create("syzkaller", 0 [pid 839] ioctl(4, LOOP_CLR_FD [pid 838] <... close resumed>) = 0 [pid 836] ioctl(3, BLKSECDISCARD, [0, 0] [pid 840] <... memfd_create resumed>) = 3 [pid 839] <... ioctl resumed>) = 0 [pid 836] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 840] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 837] ioctl(4, LOOP_SET_FD, 3 [pid 836] exit_group(0 [pid 840] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 838] memfd_create("syzkaller", 0 [pid 837] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 836] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 841 attached [pid 840] 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 838] <... memfd_create resumed>) = 3 [pid 837] close(4 [pid 836] +++ exited with 0 +++ [pid 841] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 840] <... write resumed>) = 262144 [pid 839] ioctl(4, LOOP_SET_FD, 3 [pid 838] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 837] <... close resumed>) = 0 [pid 840] munmap(0x7f7bfe3d8000, 262144 [pid 839] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 837] close(3 [pid 841] <... prctl resumed>) = 0 [pid 840] <... munmap resumed>) = 0 [pid 839] close(4 [pid 838] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 837] <... close resumed>) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=836, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 840] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 839] <... close resumed>) = 0 [pid 837] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 840] <... openat resumed>) = 4 [pid 839] close(3 [pid 837] <... openat resumed>) = 3 [pid 840] ioctl(4, LOOP_SET_FD, 3 [pid 839] <... close resumed>) = 0 [pid 837] ioctl(3, BLKSECDISCARD, [0, 0] [pid 840] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 839] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 837] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 840] ioctl(4, LOOP_CLR_FD [pid 839] <... openat resumed>) = 3 [pid 837] exit_group(0 [pid 840] <... ioctl resumed>) = 0 [pid 839] ioctl(3, BLKSECDISCARD, [0, 0] [pid 838] 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 837] <... exit_group resumed>) = ? [pid 839] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 837] +++ exited with 0 +++ [pid 839] exit_group(0) = ? [pid 841] setpgid(0, 0 [pid 839] +++ exited with 0 +++ [pid 838] <... write resumed>) = 262144 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=837, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=839, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 840] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 840] close(4 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 840] <... close resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 306] <... openat resumed>) = 3 [pid 840] close(3 [pid 838] munmap(0x7f7bfe3d8000, 262144 [pid 310] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 841] <... setpgid resumed>) = 0 [pid 840] <... close resumed>) = 0 [pid 838] <... munmap resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 306] <... ioctl resumed>) = 0 [pid 840] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 838] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 310] <... ioctl resumed>) = 0 [pid 306] close(3 [pid 840] <... openat resumed>) = 3 [pid 838] <... openat resumed>) = 4 [pid 310] close(3 [pid 306] <... close resumed>) = 0 [pid 840] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] <... close resumed>) = 0 [pid 841] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 840] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 838] ioctl(4, LOOP_SET_FD, 3 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 840] exit_group(0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 842 [pid 840] <... exit_group resumed>) = ? [pid 841] <... openat resumed>) = 3 [pid 840] +++ exited with 0 +++ [pid 838] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] <... openat resumed>) = 3 [pid 841] write(3, "1000", 4 [pid 838] ioctl(4, LOOP_CLR_FD [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 843 [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=840, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 838] <... ioctl resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 841] <... write resumed>) = 4 [pid 309] close(3 [pid 308] <... restart_syscall resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 841] close(3 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 843 attached [pid 843] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 843] setpgid(0, 0) = 0 [pid 843] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 841] <... close resumed>) = 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 844 [pid 308] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 841] memfd_create("syzkaller", 0 [pid 308] close(3) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 838] ioctl(4, LOOP_SET_FD, 3 [pid 843] <... openat resumed>) = 3 [pid 843] write(3, "1000", 4) = 4 [pid 843] close(3) = 0 [pid 843] memfd_create("syzkaller", 0 [pid 838] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 845 [pid 841] <... memfd_create resumed>) = 3 [pid 838] close(4 [pid 843] <... memfd_create resumed>) = 3 [pid 841] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 838] <... close resumed>) = 0 [pid 838] close(3 [pid 843] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 841] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 843] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 843] 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 838] <... close resumed>) = 0 [pid 843] <... write resumed>) = 262144 [pid 841] 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 838] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 838] ioctl(3, BLKSECDISCARD, [0, 0]./strace-static-x86_64: Process 844 attached ) = -1 EOPNOTSUPP (Operation not supported) [pid 844] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 838] exit_group(0 [pid 844] <... prctl resumed>) = 0 [pid 838] <... exit_group resumed>) = ? [pid 844] setpgid(0, 0) = 0 [pid 844] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 842 attached ) = 3 [pid 842] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 844] write(3, "1000", 4 [pid 842] <... prctl resumed>) = 0 [pid 844] <... write resumed>) = 4 [pid 842] setpgid(0, 0 [pid 844] close(3 [pid 842] <... setpgid resumed>) = 0 [pid 844] <... close resumed>) = 0 [pid 842] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 845 attached [pid 844] memfd_create("syzkaller", 0 [pid 842] <... openat resumed>) = 3 [pid 838] +++ exited with 0 +++ [pid 845] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 844] <... memfd_create resumed>) = 3 [pid 842] write(3, "1000", 4 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=838, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 845] <... prctl resumed>) = 0 [pid 844] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 843] munmap(0x7f7bfe3d8000, 262144 [pid 842] <... write resumed>) = 4 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 845] setpgid(0, 0 [pid 844] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 843] <... munmap resumed>) = 0 [pid 842] close(3 [pid 305] <... restart_syscall resumed>) = 0 [pid 845] <... setpgid resumed>) = 0 [pid 844] 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 843] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 842] <... close resumed>) = 0 [pid 841] <... write resumed>) = 262144 [pid 845] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 843] <... openat resumed>) = 4 [pid 842] memfd_create("syzkaller", 0 [pid 841] munmap(0x7f7bfe3d8000, 262144 [pid 845] <... openat resumed>) = 3 [pid 843] ioctl(4, LOOP_SET_FD, 3 [pid 842] <... memfd_create resumed>) = 3 [pid 841] <... munmap resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 845] write(3, "1000", 4 [pid 843] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 842] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 845] <... write resumed>) = 4 [pid 844] <... write resumed>) = 262144 [pid 843] ioctl(4, LOOP_CLR_FD [pid 842] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 841] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 305] <... openat resumed>) = 3 [pid 845] close(3 [pid 843] <... ioctl resumed>) = 0 [pid 842] 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 841] <... openat resumed>) = 4 [pid 305] ioctl(3, LOOP_CLR_FD [pid 845] <... close resumed>) = 0 [pid 842] <... write resumed>) = 262144 [pid 841] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... ioctl resumed>) = 0 [pid 845] memfd_create("syzkaller", 0 [pid 844] munmap(0x7f7bfe3d8000, 262144 [pid 841] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] close(3 [pid 845] <... memfd_create resumed>) = 3 [pid 844] <... munmap resumed>) = 0 [pid 845] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 844] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 842] munmap(0x7f7bfe3d8000, 262144 [pid 841] ioctl(4, LOOP_CLR_FD [pid 305] <... close resumed>) = 0 [pid 845] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 844] <... openat resumed>) = 4 [pid 842] <... munmap resumed>) = 0 [pid 841] <... ioctl resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 845] 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 844] ioctl(4, LOOP_SET_FD, 3 [pid 843] ioctl(4, LOOP_SET_FD, 3 [pid 842] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 845] <... write resumed>) = 262144 [pid 844] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 843] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 842] <... openat resumed>) = 4 [pid 845] munmap(0x7f7bfe3d8000, 262144 [pid 844] ioctl(4, LOOP_CLR_FD [pid 843] close(4 [pid 842] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 846 [pid 845] <... munmap resumed>) = 0 [pid 844] <... ioctl resumed>) = 0 [pid 843] <... close resumed>) = 0 [pid 842] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 845] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 843] close(3 [pid 842] ioctl(4, LOOP_CLR_FD [pid 845] <... openat resumed>) = 4 [pid 843] <... close resumed>) = 0 [pid 845] ioctl(4, LOOP_SET_FD, 3 [pid 843] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 842] <... ioctl resumed>) = 0 [pid 841] ioctl(4, LOOP_SET_FD, 3 [pid 845] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 843] <... openat resumed>) = 3 [pid 841] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 845] ioctl(4, LOOP_CLR_FD [pid 843] ioctl(3, BLKSECDISCARD, [0, 0] [pid 841] close(4 [pid 845] <... ioctl resumed>) = 0 [pid 843] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 843] exit_group(0 [pid 841] <... close resumed>) = 0 [pid 844] ioctl(4, LOOP_SET_FD, 3 [pid 843] <... exit_group resumed>) = ? [pid 841] close(3 [pid 844] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 843] +++ exited with 0 +++ [pid 844] close(4 [pid 842] ioctl(4, LOOP_SET_FD, 3 [pid 845] ioctl(4, LOOP_SET_FD, 3 [pid 844] <... close resumed>) = 0 [pid 842] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 845] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 844] close(3 [pid 842] close(4 [pid 845] close(4 [pid 844] <... close resumed>) = 0 [pid 842] <... close resumed>) = 0 [pid 841] <... close resumed>) = 0 [pid 845] <... close resumed>) = 0 [pid 844] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 842] close(3 [pid 841] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=843, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 846 attached [pid 845] close(3 [pid 844] <... openat resumed>) = 3 [pid 842] <... close resumed>) = 0 [pid 841] <... openat resumed>) = 3 [pid 846] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 845] <... close resumed>) = 0 [pid 844] ioctl(3, BLKSECDISCARD, [0, 0] [pid 842] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 841] ioctl(3, BLKSECDISCARD, [0, 0] [pid 845] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 844] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 842] <... openat resumed>) = 3 [pid 841] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 845] <... openat resumed>) = 3 [pid 844] exit_group(0 [pid 842] ioctl(3, BLKSECDISCARD, [0, 0] [pid 841] exit_group(0 [pid 845] ioctl(3, BLKSECDISCARD, [0, 0] [pid 844] <... exit_group resumed>) = ? [pid 842] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 841] <... exit_group resumed>) = ? [pid 310] <... openat resumed>) = 3 [pid 846] <... prctl resumed>) = 0 [pid 845] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 844] +++ exited with 0 +++ [pid 842] exit_group(0 [pid 845] exit_group(0 [pid 842] <... exit_group resumed>) = ? [pid 845] <... exit_group resumed>) = ? [pid 842] +++ exited with 0 +++ [pid 841] +++ exited with 0 +++ [pid 310] ioctl(3, LOOP_CLR_FD [pid 846] setpgid(0, 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=844, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 845] +++ exited with 0 +++ [pid 310] <... ioctl resumed>) = 0 [pid 310] close(3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=845, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=841, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=842, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] <... close resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] <... openat resumed>) = 3 [pid 307] <... openat resumed>) = 3 [pid 306] <... openat resumed>) = 3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 306] ioctl(3, LOOP_CLR_FD [pid 307] <... ioctl resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 307] close(3 [pid 306] close(3 [pid 307] <... close resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 846] <... setpgid resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 847 [pid 309] <... ioctl resumed>) = 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 848 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 849 [pid 309] close(3) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] <... openat resumed>) = 3 ./strace-static-x86_64: Process 847 attached [pid 847] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 847] setpgid(0, 0) = 0 [pid 847] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] ioctl(3, LOOP_CLR_FD [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 850 [pid 308] <... ioctl resumed>) = 0 [pid 847] <... openat resumed>) = 3 [pid 308] close(3 [pid 847] write(3, "1000", 4 [pid 308] <... close resumed>) = 0 [pid 847] <... write resumed>) = 4 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 847] close(3) = 0 [pid 847] memfd_create("syzkaller", 0) = 3 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 851 [pid 847] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 846] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 849 attached [pid 849] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 846] <... openat resumed>) = 3 [pid 849] <... prctl resumed>) = 0 [pid 849] setpgid(0, 0) = 0 [pid 849] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 846] write(3, "1000", 4 [pid 849] <... openat resumed>) = 3 [pid 846] <... write resumed>) = 4 ./strace-static-x86_64: Process 848 attached [pid 846] close(3 [pid 849] write(3, "1000", 4) = 4 [pid 849] close(3) = 0 [pid 849] memfd_create("syzkaller", 0 [pid 848] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 847] 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 846] <... close resumed>) = 0 [pid 849] <... memfd_create resumed>) = 3 [pid 849] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 848] <... prctl resumed>) = 0 [pid 846] memfd_create("syzkaller", 0 [pid 848] setpgid(0, 0 [pid 846] <... memfd_create resumed>) = 3 ./strace-static-x86_64: Process 850 attached [pid 846] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 850] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 846] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 848] <... setpgid resumed>) = 0 [pid 850] <... prctl resumed>) = 0 [pid 850] setpgid(0, 0) = 0 [pid 850] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 850] write(3, "1000", 4) = 4 [pid 850] close(3) = 0 [pid 850] memfd_create("syzkaller", 0) = 3 [pid 850] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 851 attached ) = 0x7f7bfe3d8000 [pid 851] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 850] 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 849] 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 848] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 846] 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 851] <... prctl resumed>) = 0 [pid 847] <... write resumed>) = 262144 [pid 851] setpgid(0, 0 [pid 847] munmap(0x7f7bfe3d8000, 262144 [pid 851] <... setpgid resumed>) = 0 [pid 847] <... munmap resumed>) = 0 [pid 846] <... write resumed>) = 262144 [pid 851] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 848] <... openat resumed>) = 3 [pid 847] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 851] <... openat resumed>) = 3 [pid 848] write(3, "1000", 4 [pid 847] <... openat resumed>) = 4 [pid 846] munmap(0x7f7bfe3d8000, 262144 [pid 851] write(3, "1000", 4 [pid 847] ioctl(4, LOOP_SET_FD, 3 [pid 851] <... write resumed>) = 4 [pid 848] <... write resumed>) = 4 [pid 847] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 846] <... munmap resumed>) = 0 [pid 851] close(3 [pid 847] ioctl(4, LOOP_CLR_FD [pid 851] <... close resumed>) = 0 [pid 849] <... write resumed>) = 262144 [pid 847] <... ioctl resumed>) = 0 [pid 851] memfd_create("syzkaller", 0 [pid 849] munmap(0x7f7bfe3d8000, 262144 [pid 851] <... memfd_create resumed>) = 3 [pid 849] <... munmap resumed>) = 0 [pid 851] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 850] <... write resumed>) = 262144 [pid 849] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 848] close(3 [pid 846] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 851] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 851] 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 849] <... openat resumed>) = 4 [pid 848] <... close resumed>) = 0 [pid 846] <... openat resumed>) = 4 [pid 851] <... write resumed>) = 262144 [pid 850] munmap(0x7f7bfe3d8000, 262144 [pid 849] ioctl(4, LOOP_SET_FD, 3 [pid 848] memfd_create("syzkaller", 0 [pid 847] ioctl(4, LOOP_SET_FD, 3 [pid 846] ioctl(4, LOOP_SET_FD, 3 [pid 850] <... munmap resumed>) = 0 [pid 849] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 847] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 850] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 849] ioctl(4, LOOP_CLR_FD [pid 847] close(4 [pid 850] <... openat resumed>) = 4 [pid 849] <... ioctl resumed>) = 0 [pid 847] <... close resumed>) = 0 [pid 850] ioctl(4, LOOP_SET_FD, 3 [pid 847] close(3 [pid 850] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 848] <... memfd_create resumed>) = 3 [pid 847] <... close resumed>) = 0 [pid 846] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 851] munmap(0x7f7bfe3d8000, 262144 [pid 850] ioctl(4, LOOP_CLR_FD [pid 847] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 851] <... munmap resumed>) = 0 [pid 850] <... ioctl resumed>) = 0 [pid 847] <... openat resumed>) = 3 [pid 851] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 848] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 847] ioctl(3, BLKSECDISCARD, [0, 0] [pid 846] ioctl(4, LOOP_CLR_FD [pid 851] <... openat resumed>) = 4 [pid 848] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 847] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 846] <... ioctl resumed>) = 0 [pid 851] ioctl(4, LOOP_SET_FD, 3 [pid 849] ioctl(4, LOOP_SET_FD, 3 [pid 847] exit_group(0 [pid 851] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 849] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 847] <... exit_group resumed>) = ? [pid 851] ioctl(4, LOOP_CLR_FD [pid 849] close(4 [pid 847] +++ exited with 0 +++ [pid 851] <... ioctl resumed>) = 0 [pid 850] ioctl(4, LOOP_SET_FD, 3 [pid 849] <... close resumed>) = 0 [pid 848] 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 850] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 849] close(3 [pid 850] close(4 [pid 849] <... close resumed>) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=847, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 850] <... close resumed>) = 0 [pid 849] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 848] <... write resumed>) = 262144 [pid 850] close(3 [pid 849] <... openat resumed>) = 3 [pid 850] <... close resumed>) = 0 [pid 849] ioctl(3, BLKSECDISCARD, [0, 0] [pid 848] munmap(0x7f7bfe3d8000, 262144 [pid 846] ioctl(4, LOOP_SET_FD, 3 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 851] ioctl(4, LOOP_SET_FD, 3 [pid 850] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 849] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 851] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 850] <... openat resumed>) = 3 [pid 849] exit_group(0 [pid 851] close(4 [pid 850] ioctl(3, BLKSECDISCARD, [0, 0] [pid 849] <... exit_group resumed>) = ? [pid 851] <... close resumed>) = 0 [pid 850] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 849] +++ exited with 0 +++ [pid 848] <... munmap resumed>) = 0 [pid 846] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] <... openat resumed>) = 3 [pid 851] close(3 [pid 850] exit_group(0 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=849, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 851] <... close resumed>) = 0 [pid 850] <... exit_group resumed>) = ? [pid 848] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 846] close(4 [pid 310] ioctl(3, LOOP_CLR_FD [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 851] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 850] +++ exited with 0 +++ [pid 848] <... openat resumed>) = 4 [pid 846] <... close resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 851] <... openat resumed>) = 3 [pid 851] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 851] exit_group(0 [pid 846] close(3 [pid 310] close(3 [pid 848] ioctl(4, LOOP_SET_FD, 3 [pid 306] <... openat resumed>) = 3 [pid 851] <... exit_group resumed>) = ? [pid 306] ioctl(3, LOOP_CLR_FD [pid 851] +++ exited with 0 +++ [pid 846] <... close resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 306] close(3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=851, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 848] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 846] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=850, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... close resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 848] ioctl(4, LOOP_CLR_FD [pid 309] <... openat resumed>) = 3 [pid 848] <... ioctl resumed>) = 0 [pid 846] <... openat resumed>) = 3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 852 [pid 309] ioctl(3, LOOP_CLR_FD [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 853 [pid 309] <... ioctl resumed>) = 0 [pid 846] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] close(3 [pid 846] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] <... close resumed>) = 0 ./strace-static-x86_64: Process 852 attached [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 846] exit_group(0 [pid 852] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 852] setpgid(0, 0) = 0 [pid 852] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 846] <... exit_group resumed>) = ? [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 854 [pid 852] <... openat resumed>) = 3 [pid 852] write(3, "1000", 4) = 4 [pid 852] close(3) = 0 [pid 852] memfd_create("syzkaller", 0 [pid 846] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=846, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 848] ioctl(4, LOOP_SET_FD, 3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 848] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 848] close(4 [pid 308] <... openat resumed>) = 3 [pid 848] <... close resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 848] close(3 [pid 308] <... ioctl resumed>) = 0 [pid 852] <... memfd_create resumed>) = 3 [pid 852] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 848] <... close resumed>) = 0 [pid 308] close(3) = 0 [pid 848] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 848] <... openat resumed>) = 3 [pid 852] 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 848] ioctl(3, BLKSECDISCARD, [0, 0] [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 855 [pid 305] <... openat resumed>) = 3 [pid 848] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] ioctl(3, LOOP_CLR_FD [pid 848] exit_group(0 [pid 305] <... ioctl resumed>) = 0 [pid 848] <... exit_group resumed>) = ? [pid 305] close(3 [pid 848] +++ exited with 0 +++ [pid 305] <... close resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=848, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 856 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 857 ./strace-static-x86_64: Process 853 attached [pid 853] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 853] setpgid(0, 0) = 0 [pid 853] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 853] write(3, "1000", 4) = 4 [pid 853] close(3 [pid 852] <... write resumed>) = 262144 [pid 853] <... close resumed>) = 0 [pid 852] munmap(0x7f7bfe3d8000, 262144./strace-static-x86_64: Process 855 attached ./strace-static-x86_64: Process 854 attached [pid 853] memfd_create("syzkaller", 0 [pid 852] <... munmap resumed>) = 0 [pid 855] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 854] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 853] <... memfd_create resumed>) = 3 [pid 852] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 855] <... prctl resumed>) = 0 [pid 854] <... prctl resumed>) = 0 [pid 853] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 852] <... openat resumed>) = 4 [pid 855] setpgid(0, 0 [pid 854] setpgid(0, 0 [pid 853] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 852] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 857 attached ./strace-static-x86_64: Process 856 attached [pid 855] <... setpgid resumed>) = 0 [pid 854] <... setpgid resumed>) = 0 [pid 853] 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 852] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 857] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 856] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 855] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 854] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 852] ioctl(4, LOOP_CLR_FD [pid 855] <... openat resumed>) = 3 [pid 854] <... openat resumed>) = 3 [pid 852] <... ioctl resumed>) = 0 [pid 857] <... prctl resumed>) = 0 [pid 856] <... prctl resumed>) = 0 [pid 855] write(3, "1000", 4 [pid 854] write(3, "1000", 4 [pid 855] <... write resumed>) = 4 [pid 854] <... write resumed>) = 4 [pid 855] close(3 [pid 854] close(3 [pid 857] setpgid(0, 0 [pid 856] setpgid(0, 0 [pid 855] <... close resumed>) = 0 [pid 854] <... close resumed>) = 0 [pid 857] <... setpgid resumed>) = 0 [pid 856] <... setpgid resumed>) = 0 [pid 855] memfd_create("syzkaller", 0 [pid 854] memfd_create("syzkaller", 0 [pid 857] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 856] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 855] <... memfd_create resumed>) = 3 [pid 854] <... memfd_create resumed>) = 3 [pid 853] <... write resumed>) = 262144 [pid 855] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 854] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 853] munmap(0x7f7bfe3d8000, 262144 [pid 852] ioctl(4, LOOP_SET_FD, 3 [pid 855] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 854] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 853] <... munmap resumed>) = 0 [pid 852] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 857] <... openat resumed>) = 3 [pid 856] <... openat resumed>) = 3 [pid 855] 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 854] 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 853] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 852] close(4 [pid 857] write(3, "1000", 4 [pid 856] write(3, "1000", 4 [pid 855] <... write resumed>) = 262144 [pid 854] <... write resumed>) = 262144 [pid 853] <... openat resumed>) = 4 [pid 852] <... close resumed>) = 0 [pid 855] munmap(0x7f7bfe3d8000, 262144 [pid 854] munmap(0x7f7bfe3d8000, 262144 [pid 853] ioctl(4, LOOP_SET_FD, 3 [pid 852] close(3 [pid 857] <... write resumed>) = 4 [pid 856] <... write resumed>) = 4 [pid 855] <... munmap resumed>) = 0 [pid 854] <... munmap resumed>) = 0 [pid 853] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 852] <... close resumed>) = 0 [pid 855] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 854] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 853] ioctl(4, LOOP_CLR_FD [pid 852] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 855] <... openat resumed>) = 4 [pid 854] <... openat resumed>) = 4 [pid 853] <... ioctl resumed>) = 0 [pid 852] <... openat resumed>) = 3 [pid 855] ioctl(4, LOOP_SET_FD, 3 [pid 854] ioctl(4, LOOP_SET_FD, 3 [pid 852] ioctl(3, BLKSECDISCARD, [0, 0] [pid 855] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 854] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 852] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 855] ioctl(4, LOOP_CLR_FD [pid 854] ioctl(4, LOOP_CLR_FD [pid 852] exit_group(0 [pid 855] <... ioctl resumed>) = 0 [pid 854] <... ioctl resumed>) = 0 [pid 852] <... exit_group resumed>) = ? [pid 857] close(3 [pid 856] close(3 [pid 852] +++ exited with 0 +++ [pid 853] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 853] close(4) = 0 [pid 853] close(3 [pid 857] <... close resumed>) = 0 [pid 856] <... close resumed>) = 0 [pid 853] <... close resumed>) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=852, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 855] ioctl(4, LOOP_SET_FD, 3 [pid 854] ioctl(4, LOOP_SET_FD, 3 [pid 853] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 855] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 854] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 853] <... openat resumed>) = 3 [pid 855] close(4 [pid 854] close(4 [pid 853] ioctl(3, BLKSECDISCARD, [0, 0] [pid 855] <... close resumed>) = 0 [pid 854] <... close resumed>) = 0 [pid 853] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 855] close(3 [pid 854] close(3 [pid 857] memfd_create("syzkaller", 0 [pid 856] memfd_create("syzkaller", 0 [pid 855] <... close resumed>) = 0 [pid 854] <... close resumed>) = 0 [pid 853] exit_group(0 [pid 855] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 854] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 853] <... exit_group resumed>) = ? [pid 857] <... memfd_create resumed>) = 3 [pid 856] <... memfd_create resumed>) = 3 [pid 855] <... openat resumed>) = 3 [pid 854] <... openat resumed>) = 3 [pid 853] +++ exited with 0 +++ [pid 855] ioctl(3, BLKSECDISCARD, [0, 0] [pid 854] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=853, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 855] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 854] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 855] exit_group(0 [pid 854] exit_group(0 [pid 855] <... exit_group resumed>) = ? [pid 854] <... exit_group resumed>) = ? [pid 857] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 856] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 855] +++ exited with 0 +++ [pid 854] +++ exited with 0 +++ [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 857] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 856] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=854, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=855, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 858 ./strace-static-x86_64: Process 858 attached [pid 858] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 858] setpgid(0, 0) = 0 [pid 858] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 858] write(3, "1000", 4) = 4 [pid 858] close(3) = 0 [pid 858] memfd_create("syzkaller", 0 [pid 856] 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 858] <... memfd_create resumed>) = 3 [pid 858] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 857] 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 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 310] <... openat resumed>) = 3 [pid 308] <... openat resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 310] <... ioctl resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] <... ioctl resumed>) = 0 [pid 310] close(3 [pid 309] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 858] 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 857] <... write resumed>) = 262144 [pid 310] <... close resumed>) = 0 [pid 309] close(3 [pid 308] <... close resumed>) = 0 [pid 858] <... write resumed>) = 262144 [pid 858] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 858] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 858] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 858] ioctl(4, LOOP_CLR_FD) = 0 [pid 856] <... write resumed>) = 262144 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] <... close resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 858] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 858] close(4) = 0 [pid 858] close(3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 859 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 860 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 861 [pid 857] munmap(0x7f7bfe3d8000, 262144 [pid 856] munmap(0x7f7bfe3d8000, 262144./strace-static-x86_64: Process 860 attached ) = 0 [pid 857] <... munmap resumed>) = 0 [pid 856] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 857] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 858] <... close resumed>) = 0 [pid 856] <... openat resumed>) = 4 [pid 857] <... openat resumed>) = 4 [pid 856] ioctl(4, LOOP_SET_FD, 3 [pid 858] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 858] ioctl(3, BLKSECDISCARD, [0, 0] [pid 857] ioctl(4, LOOP_SET_FD, 3 [pid 856] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 858] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 857] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 856] ioctl(4, LOOP_CLR_FD [pid 858] exit_group(0 [pid 856] <... ioctl resumed>) = 0 [pid 857] ioctl(4, LOOP_CLR_FD [pid 858] <... exit_group resumed>) = ? [pid 857] <... ioctl resumed>) = 0 [pid 860] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 859 attached ) = 0 [pid 860] setpgid(0, 0) = 0 [pid 856] ioctl(4, LOOP_SET_FD, 3 [pid 857] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 856] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 861 attached [pid 857] close(4 [pid 856] close(4 [pid 861] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 858] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=858, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 861] <... prctl resumed>) = 0 [pid 857] <... close resumed>) = 0 [pid 856] <... close resumed>) = 0 [pid 306] <... restart_syscall resumed>) = 0 [pid 857] close(3 [pid 856] close(3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 860] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 306] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD) = 0 [pid 306] close(3) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 862 [pid 861] setpgid(0, 0) = 0 [pid 861] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 857] <... close resumed>) = 0 [pid 861] write(3, "1000", 4) = 4 [pid 856] <... close resumed>) = 0 [pid 857] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 856] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 861] close(3) = 0 [pid 861] memfd_create("syzkaller", 0) = 3 [pid 861] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 857] <... openat resumed>) = 3 [pid 856] <... openat resumed>) = 3 [pid 857] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 856] ioctl(3, BLKSECDISCARD, [0, 0] [pid 861] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 857] exit_group(0 [pid 856] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) ./strace-static-x86_64: Process 862 attached [pid 860] <... openat resumed>) = 3 [pid 859] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 857] <... exit_group resumed>) = ? [pid 856] exit_group(0 [pid 861] 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 857] +++ exited with 0 +++ [pid 856] <... exit_group resumed>) = ? [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=857, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 307] ioctl(3, LOOP_CLR_FD) = 0 [pid 307] close(3) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 860] write(3, "1000", 4 [pid 859] <... prctl resumed>) = 0 [pid 856] +++ exited with 0 +++ [pid 862] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 863 [pid 860] <... write resumed>) = 4 [pid 862] <... prctl resumed>) = 0 [pid 859] setpgid(0, 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=856, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 861] <... write resumed>) = 262144 [pid 305] <... restart_syscall resumed>) = 0 [pid 861] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 861] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 861] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 861] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 863 attached [pid 863] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 862] setpgid(0, 0 [pid 860] close(3 [pid 859] <... setpgid resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 863] <... prctl resumed>) = 0 [pid 863] setpgid(0, 0) = 0 [pid 863] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 861] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... openat resumed>) = 3 [pid 860] <... close resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 861] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... ioctl resumed>) = 0 [pid 861] close(4 [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 861] <... close resumed>) = 0 [pid 861] close(3 [pid 862] <... setpgid resumed>) = 0 [pid 860] memfd_create("syzkaller", 0 [pid 859] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 864 [pid 861] <... close resumed>) = 0 [pid 861] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 861] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 861] exit_group(0) = ? [pid 860] <... memfd_create resumed>) = 3 [pid 859] <... openat resumed>) = 3 [pid 860] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 859] write(3, "1000", 4 [pid 860] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 859] <... write resumed>) = 4 [pid 861] +++ exited with 0 +++ [pid 859] close(3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=861, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 859] <... close resumed>) = 0 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 863] <... openat resumed>) = 3 [pid 859] memfd_create("syzkaller", 0 [pid 863] write(3, "1000", 4) = 4 [pid 863] close(3) = 0 [pid 863] memfd_create("syzkaller", 0) = 3 [pid 863] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 309] <... restart_syscall resumed>) = 0 [pid 859] <... memfd_create resumed>) = 3 [pid 859] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 859] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 309] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 863] 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 864 attached [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 865 [pid 864] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 864] setpgid(0, 0) = 0 [pid 863] <... write resumed>) = 262144 [pid 862] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 860] 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 859] 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 864] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 864] write(3, "1000", 4) = 4 [pid 864] close(3) = 0 [pid 864] memfd_create("syzkaller", 0) = 3 [pid 864] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 860] <... write resumed>) = 262144 [pid 860] munmap(0x7f7bfe3d8000, 262144 [pid 859] <... write resumed>) = 262144 [pid 863] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 863] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 860] <... munmap resumed>) = 0 [pid 863] <... openat resumed>) = 4 [pid 863] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 863] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 865 attached [pid 865] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 859] munmap(0x7f7bfe3d8000, 262144 [pid 865] <... prctl resumed>) = 0 [pid 865] setpgid(0, 0 [pid 860] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 859] <... munmap resumed>) = 0 [pid 865] <... setpgid resumed>) = 0 [pid 865] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 863] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 863] close(4) = 0 [pid 864] 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 863] close(3 [pid 865] <... openat resumed>) = 3 [pid 864] <... write resumed>) = 262144 [pid 863] <... close resumed>) = 0 [pid 862] <... openat resumed>) = 3 [pid 860] <... openat resumed>) = 4 [pid 859] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 865] write(3, "1000", 4 [pid 862] write(3, "1000", 4 [pid 860] ioctl(4, LOOP_SET_FD, 3 [pid 859] <... openat resumed>) = 4 [pid 865] <... write resumed>) = 4 [pid 863] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 862] <... write resumed>) = 4 [pid 860] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 859] ioctl(4, LOOP_SET_FD, 3 [pid 865] close(3 [pid 863] <... openat resumed>) = 3 [pid 862] close(3 [pid 860] ioctl(4, LOOP_CLR_FD [pid 859] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 865] <... close resumed>) = 0 [pid 863] ioctl(3, BLKSECDISCARD, [0, 0] [pid 862] <... close resumed>) = 0 [pid 860] <... ioctl resumed>) = 0 [pid 859] ioctl(4, LOOP_CLR_FD [pid 865] memfd_create("syzkaller", 0 [pid 864] munmap(0x7f7bfe3d8000, 262144 [pid 863] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 862] memfd_create("syzkaller", 0 [pid 859] <... ioctl resumed>) = 0 [pid 865] <... memfd_create resumed>) = 3 [pid 864] <... munmap resumed>) = 0 [pid 863] exit_group(0 [pid 862] <... memfd_create resumed>) = 3 [pid 862] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 865] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 864] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 863] <... exit_group resumed>) = ? [pid 865] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 864] <... openat resumed>) = 4 [pid 863] +++ exited with 0 +++ [pid 862] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 865] 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 864] ioctl(4, LOOP_SET_FD, 3 [pid 862] 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 860] ioctl(4, LOOP_SET_FD, 3 [pid 865] <... write resumed>) = 262144 [pid 864] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 860] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 859] ioctl(4, LOOP_SET_FD, 3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=863, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 864] ioctl(4, LOOP_CLR_FD [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 860] close(4 [pid 864] <... ioctl resumed>) = 0 [pid 859] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] <... openat resumed>) = 3 [pid 862] <... write resumed>) = 262144 [pid 860] <... close resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 865] munmap(0x7f7bfe3d8000, 262144 [pid 862] munmap(0x7f7bfe3d8000, 262144 [pid 860] close(3 [pid 859] close(4 [pid 307] <... ioctl resumed>) = 0 [pid 865] <... munmap resumed>) = 0 [pid 307] close(3 [pid 865] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] <... close resumed>) = 0 [pid 865] <... openat resumed>) = 4 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 865] ioctl(4, LOOP_SET_FD, 3 [pid 860] <... close resumed>) = 0 [pid 859] <... close resumed>) = 0 [pid 865] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 860] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 859] close(3 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 866 [pid 865] ioctl(4, LOOP_CLR_FD [pid 864] ioctl(4, LOOP_SET_FD, 3 [pid 862] <... munmap resumed>) = 0 [pid 865] <... ioctl resumed>) = 0 [pid 864] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 864] close(4) = 0 [pid 864] close(3) = 0 [pid 862] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 860] <... openat resumed>) = 3 [pid 859] <... close resumed>) = 0 [pid 864] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 862] <... openat resumed>) = 4 [pid 860] ioctl(3, BLKSECDISCARD, [0, 0] [pid 859] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 865] ioctl(4, LOOP_SET_FD, 3 [pid 864] <... openat resumed>) = 3 [pid 862] ioctl(4, LOOP_SET_FD, 3 [pid 860] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 865] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 864] ioctl(3, BLKSECDISCARD, [0, 0] [pid 862] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 860] exit_group(0 [pid 859] <... openat resumed>) = 3 [pid 865] close(4 [pid 864] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 862] ioctl(4, LOOP_CLR_FD [pid 860] <... exit_group resumed>) = ? [pid 859] ioctl(3, BLKSECDISCARD, [0, 0] [pid 865] <... close resumed>) = 0 [pid 864] exit_group(0 [pid 865] close(3 [pid 864] <... exit_group resumed>) = ? [pid 865] <... close resumed>) = 0 [pid 864] +++ exited with 0 +++ [pid 862] <... ioctl resumed>) = 0 [pid 860] +++ exited with 0 +++ [pid 859] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 865] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=860, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=864, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 865] <... openat resumed>) = 3 [pid 859] exit_group(0 [pid 865] ioctl(3, BLKSECDISCARD, [0, 0] [pid 859] <... exit_group resumed>) = ? [pid 865] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 865] exit_group(0) = ? [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 865] +++ exited with 0 +++ [pid 859] +++ exited with 0 +++ [pid 308] <... openat resumed>) = 3 [pid 305] <... openat resumed>) = 3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=859, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=865, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] ioctl(3, LOOP_CLR_FD [pid 305] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 866 attached [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 308] <... ioctl resumed>) = 0 [pid 866] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 310] <... restart_syscall resumed>) = 0 [pid 309] <... restart_syscall resumed>) = 0 [pid 308] close(3 [pid 305] <... ioctl resumed>) = 0 [pid 866] <... prctl resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 305] close(3 [pid 866] setpgid(0, 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 305] <... close resumed>) = 0 [pid 866] <... setpgid resumed>) = 0 [pid 866] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 866] write(3, "1000", 4 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 310] <... openat resumed>) = 3 [pid 309] <... openat resumed>) = 3 [pid 866] <... write resumed>) = 4 [pid 866] close(3) = 0 [pid 866] memfd_create("syzkaller", 0) = 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 867 [pid 866] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 862] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... ioctl resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 868 [pid 866] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 862] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] close(3 [pid 309] close(3 [pid 866] 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 862] close(4 [pid 310] <... close resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 862] <... close resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 862] close(3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 869 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 870 ./strace-static-x86_64: Process 867 attached [pid 867] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 868 attached [pid 868] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 867] <... prctl resumed>) = 0 [pid 867] setpgid(0, 0) = 0 [pid 868] <... prctl resumed>) = 0 [pid 868] setpgid(0, 0 [pid 867] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 862] <... close resumed>) = 0 [pid 868] <... setpgid resumed>) = 0 [pid 862] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 868] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 867] <... openat resumed>) = 3 [pid 866] <... write resumed>) = 262144 [pid 862] <... openat resumed>) = 3 [pid 868] write(3, "1000", 4 [pid 867] write(3, "1000", 4 [pid 866] munmap(0x7f7bfe3d8000, 262144 [pid 862] ioctl(3, BLKSECDISCARD, [0, 0] [pid 868] <... write resumed>) = 4 [pid 867] <... write resumed>) = 4 [pid 866] <... munmap resumed>) = 0 [pid 862] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 868] close(3 [pid 867] close(3 [pid 866] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 862] exit_group(0 [pid 868] <... close resumed>) = 0 [pid 867] <... close resumed>) = 0 [pid 866] <... openat resumed>) = 4 [pid 862] <... exit_group resumed>) = ? [pid 868] memfd_create("syzkaller", 0 [pid 867] memfd_create("syzkaller", 0 [pid 866] ioctl(4, LOOP_SET_FD, 3 [pid 868] <... memfd_create resumed>) = 3 [pid 867] <... memfd_create resumed>) = 3 [pid 866] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 868] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 867] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 866] ioctl(4, LOOP_CLR_FD [pid 862] +++ exited with 0 +++ [pid 868] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 867] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 866] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 869 attached [pid 868] 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 867] 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 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=862, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 870 attached [pid 869] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 866] ioctl(4, LOOP_SET_FD, 3 [pid 870] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 869] setpgid(0, 0 [pid 866] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 869] <... setpgid resumed>) = 0 [pid 866] close(4 [pid 306] <... openat resumed>) = 3 [pid 869] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 866] <... close resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 869] <... openat resumed>) = 3 [pid 866] close(3 [pid 306] <... ioctl resumed>) = 0 [pid 870] <... prctl resumed>) = 0 [pid 869] write(3, "1000", 4 [pid 866] <... close resumed>) = 0 [pid 306] close(3 [pid 869] <... write resumed>) = 4 [pid 867] <... write resumed>) = 262144 [pid 866] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 870] setpgid(0, 0 [pid 306] <... close resumed>) = 0 [pid 870] <... setpgid resumed>) = 0 [pid 869] close(3 [pid 868] <... write resumed>) = 262144 [pid 867] munmap(0x7f7bfe3d8000, 262144 [pid 866] <... openat resumed>) = 3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 870] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 869] <... close resumed>) = 0 [pid 868] munmap(0x7f7bfe3d8000, 262144 [pid 867] <... munmap resumed>) = 0 [pid 866] ioctl(3, BLKSECDISCARD, [0, 0] [pid 869] memfd_create("syzkaller", 0 [pid 868] <... munmap resumed>) = 0 [pid 870] <... openat resumed>) = 3 [pid 867] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 866] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 871 [pid 870] write(3, "1000", 4 [pid 869] <... memfd_create resumed>) = 3 [pid 868] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 867] <... openat resumed>) = 4 [pid 866] exit_group(0 [pid 869] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 868] <... openat resumed>) = 4 [pid 867] ioctl(4, LOOP_SET_FD, 3 [pid 866] <... exit_group resumed>) = ? [pid 870] <... write resumed>) = 4 [pid 869] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 868] ioctl(4, LOOP_SET_FD, 3 [pid 867] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 866] +++ exited with 0 +++ [pid 870] close(3 [pid 869] 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 868] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 867] ioctl(4, LOOP_CLR_FD [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=866, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 870] <... close resumed>) = 0 [pid 869] <... write resumed>) = 262144 [pid 868] ioctl(4, LOOP_CLR_FD [pid 867] <... ioctl resumed>) = 0 [pid 869] munmap(0x7f7bfe3d8000, 262144 [pid 868] <... ioctl resumed>) = 0 [pid 869] <... munmap resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 870] memfd_create("syzkaller", 0 [pid 869] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 307] <... openat resumed>) = 3 [pid 869] <... openat resumed>) = 4 [pid 307] ioctl(3, LOOP_CLR_FD [pid 869] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... ioctl resumed>) = 0 [pid 869] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] close(3 [pid 869] ioctl(4, LOOP_CLR_FD [pid 307] <... close resumed>) = 0 [pid 869] <... ioctl resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 870] <... memfd_create resumed>) = 3 [pid 868] ioctl(4, LOOP_SET_FD, 3 [pid 867] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 872 [pid 868] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 867] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 868] close(4 [pid 867] close(4 [pid 868] <... close resumed>) = 0 [pid 867] <... close resumed>) = 0 [pid 868] close(3 [pid 867] close(3 [pid 870] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 868] <... close resumed>) = 0 [pid 867] <... close resumed>) = 0 [pid 869] ioctl(4, LOOP_SET_FD, 3 [pid 868] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 867] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 869] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 868] <... openat resumed>) = 3 [pid 867] <... openat resumed>) = 3 [pid 870] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 869] close(4 [pid 868] ioctl(3, BLKSECDISCARD, [0, 0] [pid 867] ioctl(3, BLKSECDISCARD, [0, 0] [pid 869] <... close resumed>) = 0 [pid 868] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 867] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 869] close(3 [pid 868] exit_group(0 [pid 867] exit_group(0 [pid 869] <... close resumed>) = 0 [pid 868] <... exit_group resumed>) = ? [pid 867] <... exit_group resumed>) = ? [pid 870] 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 869] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 868] +++ exited with 0 +++ [pid 867] +++ exited with 0 +++ [pid 869] <... openat resumed>) = 3 [pid 869] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 869] exit_group(0) = ? [pid 869] +++ exited with 0 +++ ./strace-static-x86_64: Process 871 attached [pid 871] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 871] setpgid(0, 0) = 0 [pid 871] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 870] <... write resumed>) = 262144 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=867, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=868, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 871] <... openat resumed>) = 3 [pid 871] write(3, "1000", 4) = 4 [pid 871] close(3) = 0 [pid 870] munmap(0x7f7bfe3d8000, 262144 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=869, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 871] memfd_create("syzkaller", 0 [pid 308] <... restart_syscall resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 871] <... memfd_create resumed>) = 3 [pid 871] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 ./strace-static-x86_64: Process 872 attached [pid 870] <... munmap resumed>) = 0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 872] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 871] 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 870] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 310] <... openat resumed>) = 3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 310] ioctl(3, LOOP_CLR_FD [pid 308] <... openat resumed>) = 3 [pid 870] <... openat resumed>) = 4 [pid 310] <... ioctl resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 305] <... openat resumed>) = 3 [pid 872] <... prctl resumed>) = 0 [pid 871] <... write resumed>) = 262144 [pid 870] ioctl(4, LOOP_SET_FD, 3 [pid 310] close(3 [pid 308] <... ioctl resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 871] munmap(0x7f7bfe3d8000, 262144 [pid 310] <... close resumed>) = 0 [pid 308] close(3 [pid 305] <... ioctl resumed>) = 0 [pid 870] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 871] <... munmap resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 305] close(3 [pid 871] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 4 [pid 871] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 871] ioctl(4, LOOP_CLR_FD) = 0 [pid 872] setpgid(0, 0 [pid 870] ioctl(4, LOOP_CLR_FD [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... close resumed>) = 0 ./strace-static-x86_64: Process 873 attached [pid 870] <... ioctl resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 873 ./strace-static-x86_64: Process 874 attached [pid 873] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 872] <... setpgid resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 873] <... prctl resumed>) = 0 [pid 872] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 871] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 874 [pid 873] setpgid(0, 0 [pid 872] <... openat resumed>) = 3 [pid 871] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 875 [pid 873] <... setpgid resumed>) = 0 [pid 872] write(3, "1000", 4 [pid 871] close(4 [pid 870] ioctl(4, LOOP_SET_FD, 3 [pid 873] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 872] <... write resumed>) = 4 [pid 871] <... close resumed>) = 0 [pid 870] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 873] <... openat resumed>) = 3 [pid 872] close(3 [pid 871] close(3 [pid 870] close(4 [pid 874] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 873] write(3, "1000", 4 [pid 872] <... close resumed>) = 0 [pid 871] <... close resumed>) = 0 [pid 870] <... close resumed>) = 0 [pid 874] <... prctl resumed>) = 0 [pid 873] <... write resumed>) = 4 [pid 872] memfd_create("syzkaller", 0 [pid 871] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 870] close(3./strace-static-x86_64: Process 875 attached [pid 874] setpgid(0, 0 [pid 873] close(3 [pid 872] <... memfd_create resumed>) = 3 [pid 871] <... openat resumed>) = 3 [pid 870] <... close resumed>) = 0 [pid 874] <... setpgid resumed>) = 0 [pid 873] <... close resumed>) = 0 [pid 872] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 871] ioctl(3, BLKSECDISCARD, [0, 0] [pid 870] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 875] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 874] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 873] memfd_create("syzkaller", 0 [pid 872] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 871] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 870] <... openat resumed>) = 3 [pid 875] <... prctl resumed>) = 0 [pid 874] <... openat resumed>) = 3 [pid 873] <... memfd_create resumed>) = 3 [pid 872] 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 871] exit_group(0 [pid 870] ioctl(3, BLKSECDISCARD, [0, 0] [pid 875] setpgid(0, 0 [pid 874] write(3, "1000", 4 [pid 873] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 872] <... write resumed>) = 262144 [pid 871] <... exit_group resumed>) = ? [pid 870] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 875] <... setpgid resumed>) = 0 [pid 874] <... write resumed>) = 4 [pid 873] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 872] munmap(0x7f7bfe3d8000, 262144 [pid 871] +++ exited with 0 +++ [pid 870] exit_group(0 [pid 875] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 874] close(3 [pid 873] 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 872] <... munmap resumed>) = 0 [pid 870] <... exit_group resumed>) = ? [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=871, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 875] <... openat resumed>) = 3 [pid 874] <... close resumed>) = 0 [pid 873] <... write resumed>) = 262144 [pid 872] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 870] +++ exited with 0 +++ [pid 875] write(3, "1000", 4 [pid 874] memfd_create("syzkaller", 0 [pid 873] munmap(0x7f7bfe3d8000, 262144 [pid 872] <... openat resumed>) = 4 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=870, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 875] <... write resumed>) = 4 [pid 874] <... memfd_create resumed>) = 3 [pid 873] <... munmap resumed>) = 0 [pid 872] ioctl(4, LOOP_SET_FD, 3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 875] close(3 [pid 874] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 873] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 872] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 875] <... close resumed>) = 0 [pid 874] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 873] <... openat resumed>) = 4 [pid 872] ioctl(4, LOOP_CLR_FD [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 306] <... openat resumed>) = 3 [pid 875] memfd_create("syzkaller", 0 [pid 874] 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 873] ioctl(4, LOOP_SET_FD, 3 [pid 872] <... ioctl resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 875] <... memfd_create resumed>) = 3 [pid 874] <... write resumed>) = 262144 [pid 873] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] ioctl(3, LOOP_CLR_FD [pid 306] <... ioctl resumed>) = 0 [pid 875] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 874] munmap(0x7f7bfe3d8000, 262144 [pid 873] ioctl(4, LOOP_CLR_FD [pid 309] <... ioctl resumed>) = 0 [pid 306] close(3 [pid 875] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 874] <... munmap resumed>) = 0 [pid 873] <... ioctl resumed>) = 0 [pid 309] close(3 [pid 306] <... close resumed>) = 0 [pid 874] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 872] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... close resumed>) = 0 [pid 874] <... openat resumed>) = 4 [pid 872] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 875] 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 874] ioctl(4, LOOP_SET_FD, 3 [pid 872] close(4 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 874] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 873] ioctl(4, LOOP_SET_FD, 3 [pid 872] <... close resumed>) = 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 876 [pid 874] ioctl(4, LOOP_CLR_FD [pid 873] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 872] close(3 [pid 875] <... write resumed>) = 262144 [pid 874] <... ioctl resumed>) = 0 [pid 873] close(4 [pid 872] <... close resumed>) = 0 [pid 873] <... close resumed>) = 0 [pid 872] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 873] close(3 [pid 872] <... openat resumed>) = 3 [pid 873] <... close resumed>) = 0 [pid 872] ioctl(3, BLKSECDISCARD, [0, 0] [pid 874] ioctl(4, LOOP_SET_FD, 3 [pid 873] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 872] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 877 [pid 875] munmap(0x7f7bfe3d8000, 262144 [pid 874] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 873] <... openat resumed>) = 3 [pid 872] exit_group(0 [pid 874] close(4 [pid 873] ioctl(3, BLKSECDISCARD, [0, 0] [pid 872] <... exit_group resumed>) = ? [pid 875] <... munmap resumed>) = 0 [pid 874] <... close resumed>) = 0 [pid 873] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 872] +++ exited with 0 +++ [pid 875] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 874] close(3 [pid 873] exit_group(0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=872, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 875] <... openat resumed>) = 4 [pid 874] <... close resumed>) = 0 [pid 873] <... exit_group resumed>) = ? [pid 875] ioctl(4, LOOP_SET_FD, 3 [pid 874] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 873] +++ exited with 0 +++ ./strace-static-x86_64: Process 876 attached [pid 875] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 874] <... openat resumed>) = 3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR./strace-static-x86_64: Process 877 attached [pid 876] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 875] ioctl(4, LOOP_CLR_FD [pid 874] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=873, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] <... openat resumed>) = 3 [pid 877] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 876] <... prctl resumed>) = 0 [pid 875] <... ioctl resumed>) = 0 [pid 874] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 307] ioctl(3, LOOP_CLR_FD [pid 877] <... prctl resumed>) = 0 [pid 876] setpgid(0, 0 [pid 874] exit_group(0 [pid 310] <... openat resumed>) = 3 [pid 307] <... ioctl resumed>) = 0 [pid 877] setpgid(0, 0 [pid 876] <... setpgid resumed>) = 0 [pid 874] <... exit_group resumed>) = ? [pid 310] ioctl(3, LOOP_CLR_FD [pid 307] close(3 [pid 877] <... setpgid resumed>) = 0 [pid 876] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 874] +++ exited with 0 +++ [pid 310] <... ioctl resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 877] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 876] <... openat resumed>) = 3 [pid 875] ioctl(4, LOOP_SET_FD, 3 [pid 310] close(3 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 877] <... openat resumed>) = 3 [pid 876] write(3, "1000", 4 [pid 875] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] <... close resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=874, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 877] write(3, "1000", 4 [pid 876] <... write resumed>) = 4 [pid 875] close(4 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 877] <... write resumed>) = 4 [pid 876] close(3 [pid 875] <... close resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 878 [pid 877] close(3 [pid 876] <... close resumed>) = 0 [pid 875] close(3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 879 [pid 308] ioctl(3, LOOP_CLR_FD [pid 877] <... close resumed>) = 0 [pid 876] memfd_create("syzkaller", 0 [pid 308] <... ioctl resumed>) = 0 [pid 308] close(3) = 0 [pid 876] <... memfd_create resumed>) = 3 [pid 875] <... close resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 877] memfd_create("syzkaller", 0 [pid 876] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 875] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 877] <... memfd_create resumed>) = 3 [pid 876] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 875] <... openat resumed>) = 3 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 880 [pid 877] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 878 attached [pid 878] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 876] 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 875] ioctl(3, BLKSECDISCARD, [0, 0] [pid 877] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 878] <... prctl resumed>) = 0 [pid 878] setpgid(0, 0) = 0 [pid 876] <... write resumed>) = 262144 [pid 875] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 878] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 875] exit_group(0) = ? [pid 878] write(3, "1000", 4) = 4 [pid 878] close(3 [pid 877] 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 876] munmap(0x7f7bfe3d8000, 262144 [pid 875] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=875, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 876] <... munmap resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 878] <... close resumed>) = 0 [pid 876] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 305] <... restart_syscall resumed>) = 0 [pid 878] memfd_create("syzkaller", 0 [pid 877] <... write resumed>) = 262144 [pid 876] <... openat resumed>) = 4 ./strace-static-x86_64: Process 879 attached [pid 878] <... memfd_create resumed>) = 3 [pid 877] munmap(0x7f7bfe3d8000, 262144 [pid 876] ioctl(4, LOOP_SET_FD, 3 [pid 878] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 876] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 877] <... munmap resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 879] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 878] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 877] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 876] ioctl(4, LOOP_CLR_FD [pid 305] <... openat resumed>) = 3 ./strace-static-x86_64: Process 880 attached [pid 879] <... prctl resumed>) = 0 [pid 878] 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 877] <... openat resumed>) = 4 [pid 876] <... ioctl resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 880] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 879] setpgid(0, 0 [pid 877] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... ioctl resumed>) = 0 [pid 880] <... prctl resumed>) = 0 [pid 879] <... setpgid resumed>) = 0 [pid 877] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] close(3 [pid 880] setpgid(0, 0 [pid 879] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 877] ioctl(4, LOOP_CLR_FD [pid 305] <... close resumed>) = 0 [pid 880] <... setpgid resumed>) = 0 [pid 879] <... openat resumed>) = 3 [pid 877] <... ioctl resumed>) = 0 [pid 876] ioctl(4, LOOP_SET_FD, 3 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 880] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 879] write(3, "1000", 4 [pid 876] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 880] <... openat resumed>) = 3 [pid 879] <... write resumed>) = 4 [pid 876] close(4 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 881 [pid 880] write(3, "1000", 4 [pid 879] close(3 [pid 878] <... write resumed>) = 262144 [pid 876] <... close resumed>) = 0 [pid 880] <... write resumed>) = 4 [pid 879] <... close resumed>) = 0 [pid 878] munmap(0x7f7bfe3d8000, 262144 [pid 876] close(3 [pid 880] close(3 [pid 879] memfd_create("syzkaller", 0 [pid 878] <... munmap resumed>) = 0 [pid 878] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 877] ioctl(4, LOOP_SET_FD, 3 [pid 878] <... openat resumed>) = 4 [pid 878] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 878] ioctl(4, LOOP_CLR_FD [pid 877] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 876] <... close resumed>) = 0 [pid 879] <... memfd_create resumed>) = 3 [pid 877] close(4 [pid 880] <... close resumed>) = 0 [pid 879] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 878] <... ioctl resumed>) = 0 [pid 877] <... close resumed>) = 0 [pid 876] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 880] memfd_create("syzkaller", 0 [pid 879] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 877] close(3 [pid 876] <... openat resumed>) = 3 [pid 880] <... memfd_create resumed>) = 3 ./strace-static-x86_64: Process 881 attached [pid 881] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 881] setpgid(0, 0 [pid 878] ioctl(4, LOOP_SET_FD, 3 [pid 879] 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 878] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 878] close(4) = 0 [pid 878] close(3 [pid 880] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 879] <... write resumed>) = 262144 [pid 878] <... close resumed>) = 0 [pid 877] <... close resumed>) = 0 [pid 876] ioctl(3, BLKSECDISCARD, [0, 0] [pid 881] <... setpgid resumed>) = 0 [pid 880] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 879] munmap(0x7f7bfe3d8000, 262144 [pid 878] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 877] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 876] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 881] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 878] <... openat resumed>) = 3 [pid 881] <... openat resumed>) = 3 [pid 878] ioctl(3, BLKSECDISCARD, [0, 0] [pid 881] write(3, "1000", 4 [pid 880] 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 878] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 876] exit_group(0 [pid 881] <... write resumed>) = 4 [pid 879] <... munmap resumed>) = 0 [pid 878] exit_group(0 [pid 877] <... openat resumed>) = 3 [pid 881] close(3 [pid 878] <... exit_group resumed>) = ? [pid 881] <... close resumed>) = 0 [pid 880] <... write resumed>) = 262144 [pid 879] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 878] +++ exited with 0 +++ [pid 877] ioctl(3, BLKSECDISCARD, [0, 0] [pid 876] <... exit_group resumed>) = ? [pid 881] memfd_create("syzkaller", 0 [pid 880] munmap(0x7f7bfe3d8000, 262144 [pid 879] <... openat resumed>) = 4 [pid 877] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 881] <... memfd_create resumed>) = 3 [pid 881] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 876] +++ exited with 0 +++ [pid 877] exit_group(0 [pid 879] ioctl(4, LOOP_SET_FD, 3 [pid 881] 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 880] <... munmap resumed>) = 0 [pid 877] <... exit_group resumed>) = ? [pid 879] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=878, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 881] <... write resumed>) = 262144 [pid 880] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 879] ioctl(4, LOOP_CLR_FD [pid 877] +++ exited with 0 +++ [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=876, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 880] <... openat resumed>) = 4 [pid 879] <... ioctl resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] <... restart_syscall resumed>) = 0 [pid 880] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... openat resumed>) = 3 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=877, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 881] munmap(0x7f7bfe3d8000, 262144 [pid 880] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] ioctl(3, LOOP_CLR_FD [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 881] <... munmap resumed>) = 0 [pid 880] ioctl(4, LOOP_CLR_FD [pid 309] <... ioctl resumed>) = 0 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] <... openat resumed>) = 3 [pid 881] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 880] <... ioctl resumed>) = 0 [pid 879] ioctl(4, LOOP_SET_FD, 3 [pid 309] close(3 [pid 307] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 881] <... openat resumed>) = 4 [pid 879] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] <... close resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 306] <... ioctl resumed>) = 0 [pid 881] ioctl(4, LOOP_SET_FD, 3 [pid 879] close(4 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] <... ioctl resumed>) = 0 [pid 306] close(3 [pid 881] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 879] <... close resumed>) = 0 [pid 307] close(3 [pid 881] ioctl(4, LOOP_CLR_FD [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 882 [pid 306] <... close resumed>) = 0 [pid 881] <... ioctl resumed>) = 0 [pid 880] ioctl(4, LOOP_SET_FD, 3 [pid 879] close(3 [pid 307] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 880] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 882 attached [pid 879] <... close resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 882] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 882] setpgid(0, 0 [pid 881] ioctl(4, LOOP_SET_FD, 3 [pid 880] close(4 [pid 879] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 883 [pid 881] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 880] <... close resumed>) = 0 [pid 881] close(4) = 0 [pid 881] close(3) = 0 [pid 881] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 881] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 881] exit_group(0) = ? [pid 881] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=881, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD [pid 880] close(3 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 884 [pid 305] <... ioctl resumed>) = 0 [pid 879] <... openat resumed>) = 3 [pid 305] close(3) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 880] <... close resumed>) = 0 [pid 879] ioctl(3, BLKSECDISCARD, [0, 0] [pid 880] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 879] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 885 [pid 880] <... openat resumed>) = 3 [pid 879] exit_group(0 [pid 882] <... setpgid resumed>) = 0 [pid 880] ioctl(3, BLKSECDISCARD, [0, 0] [pid 879] <... exit_group resumed>) = ? [pid 882] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 880] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 882] <... openat resumed>) = 3 [pid 879] +++ exited with 0 +++ [pid 882] write(3, "1000", 4 [pid 880] exit_group(0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=879, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 882] <... write resumed>) = 4 [pid 880] <... exit_group resumed>) = ? [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 882] close(3 [pid 310] <... restart_syscall resumed>) = 0 [pid 882] <... close resumed>) = 0 [pid 880] +++ exited with 0 +++ [pid 882] memfd_create("syzkaller", 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=880, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 884 attached ./strace-static-x86_64: Process 885 attached [pid 882] <... memfd_create resumed>) = 3 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 882] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 310] <... openat resumed>) = 3 [pid 885] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 884] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 882] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 310] ioctl(3, LOOP_CLR_FD [pid 885] <... prctl resumed>) = 0 [pid 884] <... prctl resumed>) = 0 [pid 882] 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 310] <... ioctl resumed>) = 0 [pid 885] setpgid(0, 0 [pid 884] setpgid(0, 0 [pid 882] <... write resumed>) = 262144 [pid 310] close(3 [pid 885] <... setpgid resumed>) = 0 [pid 884] <... setpgid resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 885] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 884] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 885] <... openat resumed>) = 3 [pid 884] <... openat resumed>) = 3 [pid 308] <... openat resumed>) = 3 [pid 885] write(3, "1000", 4 [pid 884] write(3, "1000", 4 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 886 [pid 308] ioctl(3, LOOP_CLR_FD [pid 885] <... write resumed>) = 4 [pid 884] <... write resumed>) = 4 [pid 308] <... ioctl resumed>) = 0 [pid 885] close(3 [pid 884] close(3 [pid 882] munmap(0x7f7bfe3d8000, 262144 [pid 308] close(3./strace-static-x86_64: Process 886 attached [pid 885] <... close resumed>) = 0 [pid 884] <... close resumed>) = 0 [pid 882] <... munmap resumed>) = 0 [pid 308] <... close resumed>) = 0 ./strace-static-x86_64: Process 883 attached [pid 886] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 885] memfd_create("syzkaller", 0 [pid 884] memfd_create("syzkaller", 0 [pid 882] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 886] <... prctl resumed>) = 0 [pid 885] <... memfd_create resumed>) = 3 [pid 884] <... memfd_create resumed>) = 3 [pid 883] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 882] <... openat resumed>) = 4 [pid 886] setpgid(0, 0 [pid 885] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 884] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 883] <... prctl resumed>) = 0 [pid 882] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 887 [pid 886] <... setpgid resumed>) = 0 [pid 885] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 884] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 883] setpgid(0, 0 [pid 882] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 883] <... setpgid resumed>) = 0 [pid 882] ioctl(4, LOOP_CLR_FD [pid 883] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 882] <... ioctl resumed>) = 0 [pid 885] 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 883] <... openat resumed>) = 3 [pid 883] write(3, "1000", 4) = 4 [pid 883] close(3) = 0 [pid 883] memfd_create("syzkaller", 0 [pid 884] 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 883] <... memfd_create resumed>) = 3 [pid 883] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 882] ioctl(4, LOOP_SET_FD, 3 [pid 886] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 885] <... write resumed>) = 262144 [pid 884] <... write resumed>) = 262144 [pid 883] 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 882] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 886] <... openat resumed>) = 3 [pid 885] munmap(0x7f7bfe3d8000, 262144 [pid 884] munmap(0x7f7bfe3d8000, 262144 [pid 883] <... write resumed>) = 262144 [pid 882] close(4 [pid 886] write(3, "1000", 4 [pid 885] <... munmap resumed>) = 0 [pid 882] <... close resumed>) = 0 [pid 886] <... write resumed>) = 4 [pid 885] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 884] <... munmap resumed>) = 0 [pid 882] close(3./strace-static-x86_64: Process 887 attached [pid 886] close(3 [pid 885] <... openat resumed>) = 4 [pid 884] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 882] <... close resumed>) = 0 [pid 887] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 886] <... close resumed>) = 0 [pid 885] ioctl(4, LOOP_SET_FD, 3 [pid 884] <... openat resumed>) = 4 [pid 883] munmap(0x7f7bfe3d8000, 262144 [pid 882] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 887] <... prctl resumed>) = 0 [pid 886] memfd_create("syzkaller", 0 [pid 885] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 884] ioctl(4, LOOP_SET_FD, 3 [pid 883] <... munmap resumed>) = 0 [pid 882] <... openat resumed>) = 3 [pid 887] setpgid(0, 0 [pid 886] <... memfd_create resumed>) = 3 [pid 885] ioctl(4, LOOP_CLR_FD [pid 884] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 883] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 882] ioctl(3, BLKSECDISCARD, [0, 0] [pid 887] <... setpgid resumed>) = 0 [pid 886] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 885] <... ioctl resumed>) = 0 [pid 884] ioctl(4, LOOP_CLR_FD [pid 883] <... openat resumed>) = 4 [pid 882] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 887] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 886] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 884] <... ioctl resumed>) = 0 [pid 883] ioctl(4, LOOP_SET_FD, 3 [pid 882] exit_group(0 [pid 883] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 882] <... exit_group resumed>) = ? [pid 886] 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 883] ioctl(4, LOOP_CLR_FD [pid 882] +++ exited with 0 +++ [pid 887] <... openat resumed>) = 3 [pid 883] <... ioctl resumed>) = 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=882, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 887] write(3, "1000", 4 [pid 886] <... write resumed>) = 262144 [pid 309] <... openat resumed>) = 3 [pid 887] <... write resumed>) = 4 [pid 886] munmap(0x7f7bfe3d8000, 262144 [pid 885] ioctl(4, LOOP_SET_FD, 3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 887] close(3 [pid 309] <... ioctl resumed>) = 0 [pid 887] <... close resumed>) = 0 [pid 886] <... munmap resumed>) = 0 [pid 885] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] close(3 [pid 887] memfd_create("syzkaller", 0 [pid 886] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 885] close(4 [pid 884] ioctl(4, LOOP_SET_FD, 3 [pid 883] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... close resumed>) = 0 [pid 887] <... memfd_create resumed>) = 3 [pid 886] <... openat resumed>) = 4 [pid 885] <... close resumed>) = 0 [pid 884] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 883] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 887] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 886] ioctl(4, LOOP_SET_FD, 3 [pid 885] close(3 [pid 884] close(4 [pid 883] close(4 [pid 887] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 886] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 883] <... close resumed>) = 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 888 [pid 883] close(3 [pid 886] ioctl(4, LOOP_CLR_FD [pid 885] <... close resumed>) = 0 [pid 884] <... close resumed>) = 0 [pid 883] <... close resumed>) = 0 [pid 887] 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 886] <... ioctl resumed>) = 0 [pid 885] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 884] close(3 [pid 883] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 883] ioctl(3, BLKSECDISCARD, [0, 0] [pid 885] <... openat resumed>) = 3 [pid 884] <... close resumed>) = 0 [pid 883] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 883] exit_group(0 [pid 885] ioctl(3, BLKSECDISCARD, [0, 0] [pid 884] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 883] <... exit_group resumed>) = ? [pid 887] <... write resumed>) = 262144 [pid 885] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 884] <... openat resumed>) = 3 [pid 883] +++ exited with 0 +++ [pid 887] munmap(0x7f7bfe3d8000, 262144 [pid 886] ioctl(4, LOOP_SET_FD, 3 [pid 885] exit_group(0 [pid 884] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=883, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 887] <... munmap resumed>) = 0 [pid 886] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 885] <... exit_group resumed>) = ? [pid 884] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 887] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 886] close(4./strace-static-x86_64: Process 888 attached [pid 885] +++ exited with 0 +++ [pid 887] <... openat resumed>) = 4 [pid 886] <... close resumed>) = 0 [pid 884] exit_group(0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=885, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 887] ioctl(4, LOOP_SET_FD, 3 [pid 886] close(3 [pid 884] <... exit_group resumed>) = ? [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 887] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] <... restart_syscall resumed>) = 0 [pid 886] <... close resumed>) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 884] +++ exited with 0 +++ [pid 305] ioctl(3, LOOP_CLR_FD [pid 887] ioctl(4, LOOP_CLR_FD [pid 886] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 306] <... openat resumed>) = 3 [pid 305] <... ioctl resumed>) = 0 [pid 887] <... ioctl resumed>) = 0 [pid 886] <... openat resumed>) = 3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=884, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] ioctl(3, LOOP_CLR_FD [pid 305] close(3 [pid 886] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] <... ioctl resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 888] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 886] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] close(3 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 888] <... prctl resumed>) = 0 [pid 886] exit_group(0 [pid 888] setpgid(0, 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 889 [pid 888] <... setpgid resumed>) = 0 [pid 886] <... exit_group resumed>) = ? [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] <... close resumed>) = 0 [pid 888] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 887] ioctl(4, LOOP_SET_FD, 3 [pid 886] +++ exited with 0 +++ [pid 888] <... openat resumed>) = 3 [pid 887] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=886, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] <... openat resumed>) = 3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 888] write(3, "1000", 4) = 4 [pid 888] close(3 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 888] <... close resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 888] memfd_create("syzkaller", 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 888] <... memfd_create resumed>) = 3 [pid 310] <... ioctl resumed>) = 0 [pid 888] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 310] close(3 [pid 888] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 310] <... close resumed>) = 0 [pid 888] 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 887] close(4 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] ioctl(3, LOOP_CLR_FD [pid 887] <... close resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 890 [pid 887] close(3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 891 [pid 307] close(3 [pid 888] <... write resumed>) = 262144 [pid 887] <... close resumed>) = 0 [pid 307] <... close resumed>) = 0 ./strace-static-x86_64: Process 889 attached [pid 887] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 887] <... openat resumed>) = 3 [pid 887] ioctl(3, BLKSECDISCARD, [0, 0] [pid 889] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 891 attached ) = 0 [pid 887] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 892 [pid 891] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 889] setpgid(0, 0 [pid 888] munmap(0x7f7bfe3d8000, 262144 [pid 887] exit_group(0 [pid 891] <... prctl resumed>) = 0 [pid 889] <... setpgid resumed>) = 0 [pid 888] <... munmap resumed>) = 0 [pid 887] <... exit_group resumed>) = ? [pid 888] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 887] +++ exited with 0 +++ [pid 891] setpgid(0, 0 [pid 889] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 888] ioctl(4, LOOP_SET_FD, 3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=887, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 890 attached [pid 888] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 891] <... setpgid resumed>) = 0 [pid 890] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 889] <... openat resumed>) = 3 [pid 888] ioctl(4, LOOP_CLR_FD [pid 308] <... restart_syscall resumed>) = 0 [pid 891] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 890] <... prctl resumed>) = 0 [pid 889] write(3, "1000", 4 [pid 888] <... ioctl resumed>) = 0 [pid 891] <... openat resumed>) = 3 [pid 890] setpgid(0, 0 [pid 889] <... write resumed>) = 4 [pid 891] write(3, "1000", 4 [pid 890] <... setpgid resumed>) = 0 [pid 889] close(3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 891] <... write resumed>) = 4 [pid 890] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 889] <... close resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 891] close(3 [pid 890] <... openat resumed>) = 3 [pid 889] memfd_create("syzkaller", 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 891] <... close resumed>) = 0 [pid 890] write(3, "1000", 4 [pid 889] <... memfd_create resumed>) = 3 [pid 888] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 892 attached [pid 891] memfd_create("syzkaller", 0 [pid 890] <... write resumed>) = 4 [pid 889] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 888] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] close(3 [pid 892] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 891] <... memfd_create resumed>) = 3 [pid 890] close(3 [pid 889] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 888] close(4 [pid 308] <... close resumed>) = 0 [pid 892] <... prctl resumed>) = 0 [pid 891] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 890] <... close resumed>) = 0 [pid 888] <... close resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 892] setpgid(0, 0 [pid 891] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 890] memfd_create("syzkaller", 0 [pid 889] 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 888] close(3 [pid 892] <... setpgid resumed>) = 0 [pid 891] 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 890] <... memfd_create resumed>) = 3 [pid 888] <... close resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 893 [pid 892] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 890] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 888] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 892] <... openat resumed>) = 3 [pid 890] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 888] <... openat resumed>) = 3 [pid 892] write(3, "1000", 4 [pid 891] <... write resumed>) = 262144 [pid 890] 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 889] <... write resumed>) = 262144 [pid 888] ioctl(3, BLKSECDISCARD, [0, 0] [pid 892] <... write resumed>) = 4 [pid 891] munmap(0x7f7bfe3d8000, 262144 [pid 890] <... write resumed>) = 262144 [pid 889] munmap(0x7f7bfe3d8000, 262144 [pid 888] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 892] close(3 [pid 891] <... munmap resumed>) = 0 [pid 890] munmap(0x7f7bfe3d8000, 262144 [pid 888] exit_group(0./strace-static-x86_64: Process 893 attached [pid 892] <... close resumed>) = 0 [pid 891] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 890] <... munmap resumed>) = 0 [pid 889] <... munmap resumed>) = 0 [pid 888] <... exit_group resumed>) = ? [pid 893] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 892] memfd_create("syzkaller", 0 [pid 891] <... openat resumed>) = 4 [pid 890] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 889] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 888] +++ exited with 0 +++ [pid 893] <... prctl resumed>) = 0 [pid 892] <... memfd_create resumed>) = 3 [pid 891] ioctl(4, LOOP_SET_FD, 3 [pid 890] <... openat resumed>) = 4 [pid 889] <... openat resumed>) = 4 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=888, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 893] setpgid(0, 0 [pid 892] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 891] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 890] ioctl(4, LOOP_SET_FD, 3 [pid 889] ioctl(4, LOOP_SET_FD, 3 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 893] <... setpgid resumed>) = 0 [pid 892] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 891] ioctl(4, LOOP_CLR_FD [pid 890] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 889] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] <... restart_syscall resumed>) = 0 [pid 893] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 892] 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 891] <... ioctl resumed>) = 0 [pid 890] ioctl(4, LOOP_CLR_FD [pid 889] ioctl(4, LOOP_CLR_FD [pid 893] <... openat resumed>) = 3 [pid 892] <... write resumed>) = 262144 [pid 890] <... ioctl resumed>) = 0 [pid 889] <... ioctl resumed>) = 0 [pid 893] write(3, "1000", 4 [pid 892] munmap(0x7f7bfe3d8000, 262144 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 893] <... write resumed>) = 4 [pid 892] <... munmap resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 893] close(3 [pid 892] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 309] ioctl(3, LOOP_CLR_FD [pid 892] <... openat resumed>) = 4 [pid 890] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... ioctl resumed>) = 0 [pid 893] <... close resumed>) = 0 [pid 892] ioctl(4, LOOP_SET_FD, 3 [pid 891] ioctl(4, LOOP_SET_FD, 3 [pid 890] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] close(3 [pid 893] memfd_create("syzkaller", 0 [pid 892] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 891] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 890] close(4 [pid 889] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... close resumed>) = 0 [pid 892] ioctl(4, LOOP_CLR_FD [pid 890] <... close resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 892] <... ioctl resumed>) = 0 [pid 890] close(3) = 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 894 [pid 890] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 890] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 892] ioctl(4, LOOP_SET_FD, 3 [pid 890] exit_group(0 [pid 892] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 890] <... exit_group resumed>) = ? [pid 892] close(4 [pid 890] +++ exited with 0 +++ [pid 892] <... close resumed>) = 0 [pid 892] close(3 [pid 893] <... memfd_create resumed>) = 3 [pid 892] <... close resumed>) = 0 [pid 891] close(4 [pid 889] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 893] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 892] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 891] <... close resumed>) = 0 [pid 889] close(4 [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=890, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 893] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 892] <... openat resumed>) = 3 [pid 891] close(3 [pid 889] <... close resumed>) = 0 [pid 892] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 892] exit_group(0) = ? [pid 893] 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 892] +++ exited with 0 +++ [pid 891] <... close resumed>) = 0 [pid 889] close(3./strace-static-x86_64: Process 894 attached [pid 894] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 893] <... write resumed>) = 262144 [pid 894] setpgid(0, 0) = 0 [pid 889] <... close resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=892, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 893] munmap(0x7f7bfe3d8000, 262144 [pid 891] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 889] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 307] <... restart_syscall resumed>) = 0 [pid 891] <... openat resumed>) = 3 [pid 889] <... openat resumed>) = 3 [pid 306] <... openat resumed>) = 3 [pid 893] <... munmap resumed>) = 0 [pid 891] ioctl(3, BLKSECDISCARD, [0, 0] [pid 889] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] ioctl(3, LOOP_CLR_FD [pid 893] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 891] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 889] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 306] <... ioctl resumed>) = 0 [pid 894] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 893] <... openat resumed>) = 4 [pid 891] exit_group(0 [pid 889] exit_group(0 [pid 307] <... openat resumed>) = 3 [pid 306] close(3 [pid 894] <... openat resumed>) = 3 [pid 893] ioctl(4, LOOP_SET_FD, 3 [pid 891] <... exit_group resumed>) = ? [pid 889] <... exit_group resumed>) = ? [pid 307] ioctl(3, LOOP_CLR_FD [pid 306] <... close resumed>) = 0 [pid 894] write(3, "1000", 4 [pid 893] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 894] <... write resumed>) = 4 [pid 891] +++ exited with 0 +++ [pid 894] close(3 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=891, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 894] <... close resumed>) = 0 [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 894] memfd_create("syzkaller", 0 [pid 889] +++ exited with 0 +++ [pid 893] ioctl(4, LOOP_CLR_FD [pid 310] <... restart_syscall resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 894] <... memfd_create resumed>) = 3 [pid 893] <... ioctl resumed>) = 0 [pid 307] close(3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=889, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 894] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 307] <... close resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 894] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 895 [pid 305] <... restart_syscall resumed>) = 0 [pid 894] 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 310] <... openat resumed>) = 3 [pid 893] ioctl(4, LOOP_SET_FD, 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 893] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] <... ioctl resumed>) = 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 896 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 893] close(4 [pid 310] close(3 [pid 305] <... openat resumed>) = 3 [pid 893] <... close resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 894] <... write resumed>) = 262144 [pid 893] close(3 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] <... ioctl resumed>) = 0 [pid 305] close(3 [pid 893] <... close resumed>) = 0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 897 [pid 305] <... close resumed>) = 0 [pid 893] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 894] munmap(0x7f7bfe3d8000, 262144 [pid 893] <... openat resumed>) = 3 ./strace-static-x86_64: Process 896 attached [pid 894] <... munmap resumed>) = 0 [pid 893] ioctl(3, BLKSECDISCARD, [0, 0] [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 898 [pid 896] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 894] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 893] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) ./strace-static-x86_64: Process 897 attached [pid 896] <... prctl resumed>) = 0 [pid 894] <... openat resumed>) = 4 [pid 893] exit_group(0 [pid 897] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 896] setpgid(0, 0 [pid 894] ioctl(4, LOOP_SET_FD, 3 [pid 893] <... exit_group resumed>) = ? [pid 894] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 894] ioctl(4, LOOP_CLR_FD) = 0 [pid 893] +++ exited with 0 +++ [pid 897] <... prctl resumed>) = 0 [pid 896] <... setpgid resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=893, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 897] setpgid(0, 0 [pid 896] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 897] <... setpgid resumed>) = 0 [pid 896] <... openat resumed>) = 3 [pid 894] ioctl(4, LOOP_SET_FD, 3 [pid 897] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 896] write(3, "1000", 4 [pid 894] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 897] <... openat resumed>) = 3 [pid 896] <... write resumed>) = 4 [pid 894] close(4 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 897] write(3, "1000", 4 [pid 896] close(3 [pid 894] <... close resumed>) = 0 [pid 308] <... openat resumed>) = 3 [pid 897] <... write resumed>) = 4 [pid 896] <... close resumed>) = 0 [pid 894] close(3 [pid 308] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 898 attached ./strace-static-x86_64: Process 895 attached [pid 897] close(3 [pid 896] memfd_create("syzkaller", 0 [pid 894] <... close resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 898] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 897] <... close resumed>) = 0 [pid 896] <... memfd_create resumed>) = 3 [pid 895] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 894] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] close(3 [pid 898] <... prctl resumed>) = 0 [pid 897] memfd_create("syzkaller", 0 [pid 896] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 895] <... prctl resumed>) = 0 [pid 894] <... openat resumed>) = 3 [pid 308] <... close resumed>) = 0 [pid 898] setpgid(0, 0 [pid 897] <... memfd_create resumed>) = 3 [pid 896] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 895] setpgid(0, 0 [pid 894] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 898] <... setpgid resumed>) = 0 [pid 897] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 895] <... setpgid resumed>) = 0 [pid 894] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 898] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 897] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 896] 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 895] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 894] exit_group(0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 899 [pid 898] <... openat resumed>) = 3 [pid 895] <... openat resumed>) = 3 [pid 894] <... exit_group resumed>) = ? [pid 898] write(3, "1000", 4 [pid 897] 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 895] write(3, "1000", 4 [pid 894] +++ exited with 0 +++ [pid 898] <... write resumed>) = 4 [pid 896] <... write resumed>) = 262144 [pid 895] <... write resumed>) = 4 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=894, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 898] close(3 [pid 895] close(3 [pid 898] <... close resumed>) = 0 [pid 895] <... close resumed>) = 0 [pid 898] memfd_create("syzkaller", 0 [pid 895] memfd_create("syzkaller", 0 [pid 898] <... memfd_create resumed>) = 3 [pid 897] <... write resumed>) = 262144 [pid 896] munmap(0x7f7bfe3d8000, 262144 [pid 895] <... memfd_create resumed>) = 3 [pid 898] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 897] munmap(0x7f7bfe3d8000, 262144 [pid 895] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 898] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 897] <... munmap resumed>) = 0 [pid 896] <... munmap resumed>) = 0 [pid 895] <... mmap resumed>) = 0x7f7bfe3d8000 ./strace-static-x86_64: Process 899 attached [pid 898] 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 897] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 896] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 895] 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 898] <... write resumed>) = 262144 [pid 897] <... openat resumed>) = 4 [pid 896] <... openat resumed>) = 4 [pid 895] <... write resumed>) = 262144 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 898] munmap(0x7f7bfe3d8000, 262144 [pid 897] ioctl(4, LOOP_SET_FD, 3 [pid 896] ioctl(4, LOOP_SET_FD, 3 [pid 895] munmap(0x7f7bfe3d8000, 262144 [pid 309] <... openat resumed>) = 3 [pid 898] <... munmap resumed>) = 0 [pid 895] <... munmap resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 898] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 895] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 309] <... ioctl resumed>) = 0 [pid 898] <... openat resumed>) = 4 [pid 895] <... openat resumed>) = 4 [pid 309] close(3 [pid 898] ioctl(4, LOOP_SET_FD, 3 [pid 897] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 896] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 895] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... close resumed>) = 0 [pid 898] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 897] ioctl(4, LOOP_CLR_FD [pid 896] ioctl(4, LOOP_CLR_FD [pid 895] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 898] ioctl(4, LOOP_CLR_FD [pid 897] <... ioctl resumed>) = 0 [pid 896] <... ioctl resumed>) = 0 [pid 895] ioctl(4, LOOP_CLR_FD [pid 899] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 898] <... ioctl resumed>) = 0 [pid 895] <... ioctl resumed>) = 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 900 [pid 899] <... prctl resumed>) = 0 [pid 899] setpgid(0, 0) = 0 [pid 899] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 897] ioctl(4, LOOP_SET_FD, 3 [pid 896] ioctl(4, LOOP_SET_FD, 3 [pid 899] write(3, "1000", 4 [pid 897] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 896] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 899] <... write resumed>) = 4 [pid 898] ioctl(4, LOOP_SET_FD, 3 [pid 897] close(4 [pid 896] close(4 [pid 895] ioctl(4, LOOP_SET_FD, 3 [pid 899] close(3 [pid 898] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 897] <... close resumed>) = 0 [pid 896] <... close resumed>) = 0 [pid 895] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 899] <... close resumed>) = 0 [pid 898] close(4 [pid 897] close(3 [pid 896] close(3 [pid 895] close(4 [pid 899] memfd_create("syzkaller", 0 [pid 898] <... close resumed>) = 0 [pid 895] <... close resumed>) = 0 [pid 898] close(3 [pid 895] close(3 [pid 899] <... memfd_create resumed>) = 3 [pid 898] <... close resumed>) = 0 [pid 897] <... close resumed>) = 0 [pid 896] <... close resumed>) = 0 [pid 895] <... close resumed>) = 0 [pid 899] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 898] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 897] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 896] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 895] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 899] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 898] <... openat resumed>) = 3 [pid 897] <... openat resumed>) = 3 [pid 896] <... openat resumed>) = 3 [pid 895] <... openat resumed>) = 3 [pid 898] ioctl(3, BLKSECDISCARD, [0, 0] [pid 895] ioctl(3, BLKSECDISCARD, [0, 0] [pid 898] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 895] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 899] 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 898] exit_group(0 [pid 897] ioctl(3, BLKSECDISCARD, [0, 0] [pid 896] ioctl(3, BLKSECDISCARD, [0, 0] [pid 895] exit_group(0./strace-static-x86_64: Process 900 attached [pid 898] <... exit_group resumed>) = ? [pid 897] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 896] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 895] <... exit_group resumed>) = ? [pid 900] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 899] <... write resumed>) = 262144 [pid 898] +++ exited with 0 +++ [pid 897] exit_group(0 [pid 896] exit_group(0 [pid 895] +++ exited with 0 +++ [pid 900] <... prctl resumed>) = 0 [pid 899] munmap(0x7f7bfe3d8000, 262144 [pid 897] <... exit_group resumed>) = ? [pid 896] <... exit_group resumed>) = ? [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=895, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 900] setpgid(0, 0 [pid 899] <... munmap resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=898, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 900] <... setpgid resumed>) = 0 [pid 897] +++ exited with 0 +++ [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 900] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=897, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] <... openat resumed>) = 3 [pid 896] +++ exited with 0 +++ [pid 900] <... openat resumed>) = 3 [pid 899] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 305] ioctl(3, LOOP_CLR_FD [pid 900] write(3, "1000", 4 [pid 899] <... openat resumed>) = 4 [pid 310] <... restart_syscall resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=896, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] <... ioctl resumed>) = 0 [pid 900] <... write resumed>) = 4 [pid 899] ioctl(4, LOOP_SET_FD, 3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 305] close(3 [pid 900] close(3 [pid 899] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] <... openat resumed>) = 3 [pid 305] <... close resumed>) = 0 [pid 900] <... close resumed>) = 0 [pid 899] ioctl(4, LOOP_CLR_FD [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 307] ioctl(3, LOOP_CLR_FD [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 900] memfd_create("syzkaller", 0 [pid 899] <... ioctl resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 307] <... ioctl resumed>) = 0 [pid 900] <... memfd_create resumed>) = 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 307] close(3 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 901 [pid 900] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 310] <... ioctl resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 900] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 310] close(3 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] <... openat resumed>) = 3 [pid 900] 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 310] <... close resumed>) = 0 [pid 900] <... write resumed>) = 262144 [pid 899] ioctl(4, LOOP_SET_FD, 3 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 901 attached [pid 900] munmap(0x7f7bfe3d8000, 262144 [pid 899] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 902 [pid 306] <... ioctl resumed>) = 0 [pid 901] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 900] <... munmap resumed>) = 0 [pid 899] close(4 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 903 [pid 306] close(3 [pid 901] <... prctl resumed>) = 0 [pid 900] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 899] <... close resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 901] setpgid(0, 0 [pid 900] <... openat resumed>) = 4 [pid 899] close(3 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 901] <... setpgid resumed>) = 0 [pid 900] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 900] ioctl(4, LOOP_CLR_FD) = 0 [pid 899] <... close resumed>) = 0 ./strace-static-x86_64: Process 902 attached [pid 899] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 901] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 899] <... openat resumed>) = 3 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 904 [pid 901] <... openat resumed>) = 3 [pid 899] ioctl(3, BLKSECDISCARD, [0, 0]./strace-static-x86_64: Process 903 attached [pid 901] write(3, "1000", 4 [pid 899] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 903] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 901] <... write resumed>) = 4 [pid 900] ioctl(4, LOOP_SET_FD, 3 [pid 899] exit_group(0 [pid 903] <... prctl resumed>) = 0 [pid 901] close(3 [pid 900] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 899] <... exit_group resumed>) = ? [pid 903] setpgid(0, 0 [pid 901] <... close resumed>) = 0 [pid 900] close(4) = 0 [pid 900] close(3 [pid 899] +++ exited with 0 +++ [pid 903] <... setpgid resumed>) = 0 [pid 902] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 901] memfd_create("syzkaller", 0 [pid 900] <... close resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=899, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 903] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 902] <... prctl resumed>) = 0 [pid 901] <... memfd_create resumed>) = 3 [pid 900] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 903] <... openat resumed>) = 3 [pid 902] setpgid(0, 0 [pid 901] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 900] <... openat resumed>) = 3 [pid 308] <... restart_syscall resumed>) = 0 [pid 902] <... setpgid resumed>) = 0 [pid 900] ioctl(3, BLKSECDISCARD, [0, 0] [pid 902] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 900] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 902] <... openat resumed>) = 3 [pid 901] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 900] exit_group(0 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 902] write(3, "1000", 4 [pid 900] <... exit_group resumed>) = ? [pid 308] <... openat resumed>) = 3 [pid 902] <... write resumed>) = 4 [pid 901] 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 900] +++ exited with 0 +++ [pid 308] ioctl(3, LOOP_CLR_FD [pid 902] close(3 [pid 308] <... ioctl resumed>) = 0 [pid 902] <... close resumed>) = 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=900, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] close(3 [pid 902] memfd_create("syzkaller", 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] <... close resumed>) = 0 [pid 902] <... memfd_create resumed>) = 3 [pid 309] <... openat resumed>) = 3 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 902] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 901] <... write resumed>) = 262144 [pid 309] ioctl(3, LOOP_CLR_FD [pid 902] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 309] <... ioctl resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 905 [pid 901] munmap(0x7f7bfe3d8000, 262144 [pid 903] write(3, "1000", 4 [pid 902] 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 309] close(3./strace-static-x86_64: Process 904 attached [pid 903] <... write resumed>) = 4 [pid 902] <... write resumed>) = 262144 [pid 901] <... munmap resumed>) = 0 [pid 309] <... close resumed>) = 0 [pid 904] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 903] close(3 [pid 902] munmap(0x7f7bfe3d8000, 262144 [pid 901] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 904] <... prctl resumed>) = 0 [pid 903] <... close resumed>) = 0 [pid 902] <... munmap resumed>) = 0 [pid 901] <... openat resumed>) = 4 [pid 904] setpgid(0, 0 [pid 903] memfd_create("syzkaller", 0 [pid 902] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 901] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 906 [pid 904] <... setpgid resumed>) = 0 [pid 903] <... memfd_create resumed>) = 3 [pid 902] <... openat resumed>) = 4 [pid 901] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 905 attached [pid 904] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 903] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 902] ioctl(4, LOOP_SET_FD, 3 [pid 901] ioctl(4, LOOP_CLR_FD [pid 904] <... openat resumed>) = 3 [pid 903] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 902] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 901] <... ioctl resumed>) = 0 [pid 904] write(3, "1000", 4 [pid 902] ioctl(4, LOOP_CLR_FD [pid 904] <... write resumed>) = 4 [pid 902] <... ioctl resumed>) = 0 [pid 904] close(3) = 0 [pid 903] 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 904] memfd_create("syzkaller", 0) = 3 [pid 904] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 903] <... write resumed>) = 262144 [pid 905] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 904] 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 903] munmap(0x7f7bfe3d8000, 262144 [pid 902] ioctl(4, LOOP_SET_FD, 3 [pid 905] <... prctl resumed>) = 0 [pid 903] <... munmap resumed>) = 0 [pid 902] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 901] ioctl(4, LOOP_SET_FD, 3 [pid 905] setpgid(0, 0 [pid 904] <... write resumed>) = 262144 [pid 903] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 902] close(4 [pid 901] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 905] <... setpgid resumed>) = 0 [pid 904] munmap(0x7f7bfe3d8000, 262144 [pid 903] <... openat resumed>) = 4 [pid 902] <... close resumed>) = 0 [pid 901] close(4 [pid 905] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 904] <... munmap resumed>) = 0 [pid 903] ioctl(4, LOOP_SET_FD, 3 [pid 902] close(3 [pid 901] <... close resumed>) = 0 [pid 905] <... openat resumed>) = 3 [pid 904] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 903] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 902] <... close resumed>) = 0 [pid 901] close(3./strace-static-x86_64: Process 906 attached [pid 905] write(3, "1000", 4 [pid 904] <... openat resumed>) = 4 [pid 903] ioctl(4, LOOP_CLR_FD [pid 902] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 906] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 905] <... write resumed>) = 4 [pid 904] ioctl(4, LOOP_SET_FD, 3 [pid 903] <... ioctl resumed>) = 0 [pid 902] <... openat resumed>) = 3 [pid 901] <... close resumed>) = 0 [pid 906] <... prctl resumed>) = 0 [pid 905] close(3 [pid 904] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 902] ioctl(3, BLKSECDISCARD, [0, 0] [pid 901] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 906] setpgid(0, 0 [pid 905] <... close resumed>) = 0 [pid 904] ioctl(4, LOOP_CLR_FD [pid 902] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 901] <... openat resumed>) = 3 [pid 906] <... setpgid resumed>) = 0 [pid 905] memfd_create("syzkaller", 0 [pid 904] <... ioctl resumed>) = 0 [pid 902] exit_group(0 [pid 901] ioctl(3, BLKSECDISCARD, [0, 0] [pid 906] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 905] <... memfd_create resumed>) = 3 [pid 903] ioctl(4, LOOP_SET_FD, 3 [pid 902] <... exit_group resumed>) = ? [pid 901] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 906] <... openat resumed>) = 3 [pid 905] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 903] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 902] +++ exited with 0 +++ [pid 901] exit_group(0 [pid 906] write(3, "1000", 4 [pid 905] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 903] close(4 [pid 901] <... exit_group resumed>) = ? [pid 906] <... write resumed>) = 4 [pid 904] ioctl(4, LOOP_SET_FD, 3 [pid 906] close(3 [pid 904] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 906] <... close resumed>) = 0 [pid 904] close(4 [pid 906] memfd_create("syzkaller", 0 [pid 904] <... close resumed>) = 0 [pid 906] <... memfd_create resumed>) = 3 [pid 905] 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 904] close(3 [pid 903] <... close resumed>) = 0 [pid 906] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 904] <... close resumed>) = 0 [pid 901] +++ exited with 0 +++ [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=902, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 906] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 904] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 903] close(3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 906] 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 905] <... write resumed>) = 262144 [pid 904] <... openat resumed>) = 3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=901, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 906] <... write resumed>) = 262144 [pid 905] munmap(0x7f7bfe3d8000, 262144 [pid 904] ioctl(3, BLKSECDISCARD, [0, 0] [pid 903] <... close resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 906] munmap(0x7f7bfe3d8000, 262144 [pid 905] <... munmap resumed>) = 0 [pid 904] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 903] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 307] ioctl(3, LOOP_CLR_FD [pid 305] <... openat resumed>) = 3 [pid 906] <... munmap resumed>) = 0 [pid 905] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 904] exit_group(0 [pid 903] <... openat resumed>) = 3 [pid 307] <... ioctl resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 906] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 905] <... openat resumed>) = 4 [pid 904] <... exit_group resumed>) = ? [pid 903] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] close(3 [pid 305] <... ioctl resumed>) = 0 [pid 906] <... openat resumed>) = 4 [pid 905] ioctl(4, LOOP_SET_FD, 3 [pid 904] +++ exited with 0 +++ [pid 903] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] <... close resumed>) = 0 [pid 305] close(3 [pid 906] ioctl(4, LOOP_SET_FD, 3 [pid 905] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 903] exit_group(0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=904, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] <... close resumed>) = 0 [pid 906] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 905] ioctl(4, LOOP_CLR_FD [pid 903] <... exit_group resumed>) = ? [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 906] ioctl(4, LOOP_CLR_FD [pid 905] <... ioctl resumed>) = 0 [pid 906] <... ioctl resumed>) = 0 [pid 903] +++ exited with 0 +++ [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 907 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 908 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=903, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... openat resumed>) = 3 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 306] ioctl(3, LOOP_CLR_FD [pid 905] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... openat resumed>) = 3 [pid 306] <... ioctl resumed>) = 0 [pid 906] ioctl(4, LOOP_SET_FD, 3 [pid 905] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] ioctl(3, LOOP_CLR_FD [pid 306] close(3 [pid 906] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 905] close(4 [pid 310] <... ioctl resumed>) = 0 [pid 906] close(4 [pid 310] close(3 [pid 906] <... close resumed>) = 0 [pid 310] <... close resumed>) = 0 [pid 906] close(3 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 906] <... close resumed>) = 0 [pid 905] <... close resumed>) = 0 [pid 306] <... close resumed>) = 0 [pid 906] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 905] close(3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 909 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 906] <... openat resumed>) = 3 [pid 906] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 906] exit_group(0) = ? [pid 906] +++ exited with 0 +++ [pid 905] <... close resumed>) = 0 [pid 905] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=906, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 910 [pid 905] <... openat resumed>) = 3 [pid 905] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 905] exit_group(0 [pid 309] <... openat resumed>) = 3 [pid 905] <... exit_group resumed>) = ? [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 905] +++ exited with 0 +++ [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 911 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=905, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 908 attached ./strace-static-x86_64: Process 907 attached , child_tidptr=0x5555561ed5d0) = 912 [pid 908] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 907] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 910 attached [pid 908] <... prctl resumed>) = 0 [pid 907] <... prctl resumed>) = 0 [pid 908] setpgid(0, 0 [pid 907] setpgid(0, 0 [pid 910] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 908] <... setpgid resumed>) = 0 [pid 907] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 909 attached [pid 909] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 908] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 912 attached [pid 910] <... prctl resumed>) = 0 [pid 909] setpgid(0, 0 [pid 908] <... openat resumed>) = 3 [pid 907] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 910] setpgid(0, 0 [pid 909] <... setpgid resumed>) = 0 [pid 908] write(3, "1000", 4 [pid 907] <... openat resumed>) = 3 ./strace-static-x86_64: Process 911 attached [pid 912] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 910] <... setpgid resumed>) = 0 [pid 909] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 908] <... write resumed>) = 4 [pid 907] write(3, "1000", 4 [pid 912] <... prctl resumed>) = 0 [pid 911] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 910] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 909] <... openat resumed>) = 3 [pid 908] close(3 [pid 907] <... write resumed>) = 4 [pid 912] setpgid(0, 0 [pid 911] <... prctl resumed>) = 0 [pid 910] <... openat resumed>) = 3 [pid 909] write(3, "1000", 4 [pid 908] <... close resumed>) = 0 [pid 907] close(3 [pid 912] <... setpgid resumed>) = 0 [pid 911] setpgid(0, 0 [pid 910] write(3, "1000", 4 [pid 909] <... write resumed>) = 4 [pid 908] memfd_create("syzkaller", 0 [pid 907] <... close resumed>) = 0 [pid 912] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 911] <... setpgid resumed>) = 0 [pid 910] <... write resumed>) = 4 [pid 909] close(3 [pid 908] <... memfd_create resumed>) = 3 [pid 907] memfd_create("syzkaller", 0 [pid 912] <... openat resumed>) = 3 [pid 911] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 910] close(3 [pid 909] <... close resumed>) = 0 [pid 908] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 907] <... memfd_create resumed>) = 3 [pid 912] write(3, "1000", 4 [pid 911] <... openat resumed>) = 3 [pid 910] <... close resumed>) = 0 [pid 909] memfd_create("syzkaller", 0 [pid 908] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 907] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 912] <... write resumed>) = 4 [pid 911] write(3, "1000", 4 [pid 910] memfd_create("syzkaller", 0 [pid 909] <... memfd_create resumed>) = 3 [pid 911] <... write resumed>) = 4 [pid 909] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 911] close(3 [pid 909] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 912] close(3 [pid 911] <... close resumed>) = 0 [pid 910] <... memfd_create resumed>) = 3 [pid 909] 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 908] 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 907] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 912] <... close resumed>) = 0 [pid 911] memfd_create("syzkaller", 0 [pid 910] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 909] <... write resumed>) = 262144 [pid 908] <... write resumed>) = 262144 [pid 911] <... memfd_create resumed>) = 3 [pid 909] munmap(0x7f7bfe3d8000, 262144 [pid 912] memfd_create("syzkaller", 0 [pid 911] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 910] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 909] <... munmap resumed>) = 0 [pid 908] munmap(0x7f7bfe3d8000, 262144 [pid 907] 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 912] <... memfd_create resumed>) = 3 [pid 911] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 909] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 911] 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 910] 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 909] <... openat resumed>) = 4 [pid 911] <... write resumed>) = 262144 [pid 909] ioctl(4, LOOP_SET_FD, 3 [pid 908] <... munmap resumed>) = 0 [pid 912] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 907] <... write resumed>) = 262144 [pid 912] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 911] munmap(0x7f7bfe3d8000, 262144 [pid 910] <... write resumed>) = 262144 [pid 909] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 908] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 907] munmap(0x7f7bfe3d8000, 262144 [pid 911] <... munmap resumed>) = 0 [pid 909] ioctl(4, LOOP_CLR_FD [pid 911] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 909] <... ioctl resumed>) = 0 [pid 911] <... openat resumed>) = 4 [pid 908] <... openat resumed>) = 4 [pid 910] munmap(0x7f7bfe3d8000, 262144 [pid 907] <... munmap resumed>) = 0 [pid 912] 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 908] ioctl(4, LOOP_SET_FD, 3 [pid 907] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 908] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 908] ioctl(4, LOOP_CLR_FD [pid 911] ioctl(4, LOOP_SET_FD, 3 [pid 910] <... munmap resumed>) = 0 [pid 908] <... ioctl resumed>) = 0 [pid 907] <... openat resumed>) = 4 [pid 911] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 911] ioctl(4, LOOP_CLR_FD) = 0 [pid 910] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 907] ioctl(4, LOOP_SET_FD, 3 [pid 912] <... write resumed>) = 262144 [pid 910] <... openat resumed>) = 4 [pid 909] ioctl(4, LOOP_SET_FD, 3 [pid 907] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 912] munmap(0x7f7bfe3d8000, 262144 [pid 910] ioctl(4, LOOP_SET_FD, 3 [pid 909] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 907] ioctl(4, LOOP_CLR_FD [pid 912] <... munmap resumed>) = 0 [pid 910] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 909] close(4 [pid 907] <... ioctl resumed>) = 0 [pid 912] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 911] ioctl(4, LOOP_SET_FD, 3 [pid 910] ioctl(4, LOOP_CLR_FD [pid 909] <... close resumed>) = 0 [pid 912] <... openat resumed>) = 4 [pid 911] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 910] <... ioctl resumed>) = 0 [pid 909] close(3 [pid 908] ioctl(4, LOOP_SET_FD, 3 [pid 912] ioctl(4, LOOP_SET_FD, 3 [pid 911] close(4 [pid 909] <... close resumed>) = 0 [pid 908] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 912] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 911] <... close resumed>) = 0 [pid 909] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 908] close(4 [pid 907] ioctl(4, LOOP_SET_FD, 3 [pid 912] ioctl(4, LOOP_CLR_FD [pid 911] close(3 [pid 909] <... openat resumed>) = 3 [pid 908] <... close resumed>) = 0 [pid 907] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 912] <... ioctl resumed>) = 0 [pid 911] <... close resumed>) = 0 [pid 910] ioctl(4, LOOP_SET_FD, 3 [pid 909] ioctl(3, BLKSECDISCARD, [0, 0] [pid 908] close(3 [pid 907] close(4 [pid 911] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 910] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 909] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 911] <... openat resumed>) = 3 [pid 910] close(4 [pid 909] exit_group(0 [pid 908] <... close resumed>) = 0 [pid 907] <... close resumed>) = 0 [pid 911] ioctl(3, BLKSECDISCARD, [0, 0] [pid 910] <... close resumed>) = 0 [pid 909] <... exit_group resumed>) = ? [pid 908] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 907] close(3 [pid 911] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 910] close(3 [pid 909] +++ exited with 0 +++ [pid 911] exit_group(0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=909, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 911] <... exit_group resumed>) = ? [pid 911] +++ exited with 0 +++ [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 908] <... openat resumed>) = 3 [pid 310] <... openat resumed>) = 3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=911, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 912] ioctl(4, LOOP_SET_FD, 3 [pid 907] <... close resumed>) = 0 [pid 310] ioctl(3, LOOP_CLR_FD [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 310] <... ioctl resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 910] <... close resumed>) = 0 [pid 310] close(3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 310] <... close resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 912] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 910] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 908] ioctl(3, BLKSECDISCARD, [0, 0] [pid 907] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] close(3 [pid 912] close(4 [pid 910] <... openat resumed>) = 3 [pid 908] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 907] <... openat resumed>) = 3 [pid 309] <... close resumed>) = 0 [pid 912] <... close resumed>) = 0 [pid 910] ioctl(3, BLKSECDISCARD, [0, 0] [pid 908] exit_group(0 [pid 907] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 913 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 912] close(3 [pid 910] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 908] <... exit_group resumed>) = ? [pid 907] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 914 ./strace-static-x86_64: Process 914 attached [pid 914] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 912] <... close resumed>) = 0 [pid 914] <... prctl resumed>) = 0 [pid 914] setpgid(0, 0) = 0 [pid 908] +++ exited with 0 +++ [pid 912] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 910] exit_group(0 [pid 907] exit_group(0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=908, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 912] <... openat resumed>) = 3 [pid 910] <... exit_group resumed>) = ? [pid 907] <... exit_group resumed>) = ? [pid 912] ioctl(3, BLKSECDISCARD, [0, 0] [pid 907] +++ exited with 0 +++ [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 910] +++ exited with 0 +++ [pid 305] close(3 [pid 912] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=907, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] <... close resumed>) = 0 [pid 912] exit_group(0 [pid 307] restart_syscall(<... resuming interrupted clone ...> [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=910, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 912] <... exit_group resumed>) = ? [pid 307] <... restart_syscall resumed>) = 0 [pid 306] restart_syscall(<... resuming interrupted clone ...> [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 915 [pid 912] +++ exited with 0 +++ [pid 306] <... restart_syscall resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=912, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 307] ioctl(3, LOOP_CLR_FD [pid 308] <... restart_syscall resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 306] <... openat resumed>) = 3 [pid 307] close(3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 307] <... close resumed>) = 0 [pid 306] <... ioctl resumed>) = 0 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] close(3 [pid 308] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 913 attached [pid 308] close(3 [pid 306] <... close resumed>) = 0 [pid 914] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 308] <... close resumed>) = 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 916 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 915 attached [pid 914] <... openat resumed>) = 3 [pid 913] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 915] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 914] write(3, "1000", 4 [pid 913] <... prctl resumed>) = 0 [pid 914] <... write resumed>) = 4 [pid 913] setpgid(0, 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 918 [pid 915] <... prctl resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 917 [pid 914] close(3 [pid 913] <... setpgid resumed>) = 0 [pid 915] setpgid(0, 0) = 0 [pid 914] <... close resumed>) = 0 [pid 913] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 914] memfd_create("syzkaller", 0 [pid 913] <... openat resumed>) = 3 [pid 915] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 914] <... memfd_create resumed>) = 3 [pid 913] write(3, "1000", 4 [pid 915] <... openat resumed>) = 3 [pid 914] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 913] <... write resumed>) = 4 [pid 915] write(3, "1000", 4 [pid 914] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 913] close(3./strace-static-x86_64: Process 918 attached [pid 915] <... write resumed>) = 4 [pid 914] 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 913] <... close resumed>) = 0 [pid 918] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 915] close(3 [pid 914] <... write resumed>) = 262144 [pid 913] memfd_create("syzkaller", 0./strace-static-x86_64: Process 916 attached [pid 918] <... prctl resumed>) = 0 [pid 915] <... close resumed>) = 0 [pid 913] <... memfd_create resumed>) = 3 [pid 918] setpgid(0, 0 [pid 916] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 915] memfd_create("syzkaller", 0 [pid 913] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 918] <... setpgid resumed>) = 0 [pid 918] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 916] <... prctl resumed>) = 0 [pid 915] <... memfd_create resumed>) = 3 [pid 913] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 918] <... openat resumed>) = 3 [pid 916] setpgid(0, 0 [pid 915] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 916] <... setpgid resumed>) = 0 [pid 914] munmap(0x7f7bfe3d8000, 262144 [pid 916] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 914] <... munmap resumed>) = 0 [pid 918] write(3, "1000", 4 [pid 916] <... openat resumed>) = 3 [pid 915] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 914] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 913] 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 918] <... write resumed>) = 4 [pid 916] write(3, "1000", 4 [pid 914] <... openat resumed>) = 4 [pid 916] <... write resumed>) = 4 [pid 914] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 917 attached [pid 916] close(3 [pid 914] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 917] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 916] <... close resumed>) = 0 [pid 915] 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 914] ioctl(4, LOOP_CLR_FD [pid 917] <... prctl resumed>) = 0 [pid 916] memfd_create("syzkaller", 0 [pid 914] <... ioctl resumed>) = 0 [pid 917] setpgid(0, 0 [pid 916] <... memfd_create resumed>) = 3 [pid 913] <... write resumed>) = 262144 [pid 917] <... setpgid resumed>) = 0 [pid 916] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 917] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 916] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 918] close(3 [pid 917] <... openat resumed>) = 3 [pid 916] 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 915] <... write resumed>) = 262144 [pid 913] munmap(0x7f7bfe3d8000, 262144 [pid 918] <... close resumed>) = 0 [pid 917] write(3, "1000", 4 [pid 916] <... write resumed>) = 262144 [pid 915] munmap(0x7f7bfe3d8000, 262144 [pid 914] ioctl(4, LOOP_SET_FD, 3 [pid 913] <... munmap resumed>) = 0 [pid 918] memfd_create("syzkaller", 0 [pid 917] <... write resumed>) = 4 [pid 915] <... munmap resumed>) = 0 [pid 914] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 913] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 918] <... memfd_create resumed>) = 3 [pid 917] close(3 [pid 916] munmap(0x7f7bfe3d8000, 262144 [pid 915] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 914] close(4 [pid 913] <... openat resumed>) = 4 [pid 918] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 917] <... close resumed>) = 0 [pid 916] <... munmap resumed>) = 0 [pid 915] <... openat resumed>) = 4 [pid 914] <... close resumed>) = 0 [pid 913] ioctl(4, LOOP_SET_FD, 3 [pid 918] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 917] memfd_create("syzkaller", 0 [pid 916] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 915] ioctl(4, LOOP_SET_FD, 3 [pid 914] close(3 [pid 913] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 918] 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 917] <... memfd_create resumed>) = 3 [pid 916] <... openat resumed>) = 4 [pid 915] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 914] <... close resumed>) = 0 [pid 913] ioctl(4, LOOP_CLR_FD [pid 917] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 916] ioctl(4, LOOP_SET_FD, 3 [pid 914] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 917] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 916] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 914] <... openat resumed>) = 3 [pid 918] <... write resumed>) = 262144 [pid 917] 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 916] ioctl(4, LOOP_CLR_FD [pid 915] ioctl(4, LOOP_CLR_FD [pid 914] ioctl(3, BLKSECDISCARD, [0, 0] [pid 913] <... ioctl resumed>) = 0 [pid 918] munmap(0x7f7bfe3d8000, 262144 [pid 917] <... write resumed>) = 262144 [pid 916] <... ioctl resumed>) = 0 [pid 915] <... ioctl resumed>) = 0 [pid 914] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 918] <... munmap resumed>) = 0 [pid 917] munmap(0x7f7bfe3d8000, 262144 [pid 914] exit_group(0 [pid 918] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 917] <... munmap resumed>) = 0 [pid 914] <... exit_group resumed>) = ? [pid 918] <... openat resumed>) = 4 [pid 917] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 914] +++ exited with 0 +++ [pid 913] ioctl(4, LOOP_SET_FD, 3 [pid 918] ioctl(4, LOOP_SET_FD, 3 [pid 917] <... openat resumed>) = 4 [pid 916] ioctl(4, LOOP_SET_FD, 3 [pid 915] ioctl(4, LOOP_SET_FD, 3 [pid 913] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 918] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 917] ioctl(4, LOOP_SET_FD, 3 [pid 916] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 915] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 913] close(4 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=914, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 918] ioctl(4, LOOP_CLR_FD [pid 917] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 916] close(4 [pid 915] close(4 [pid 913] <... close resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 918] <... ioctl resumed>) = 0 [pid 917] ioctl(4, LOOP_CLR_FD [pid 916] <... close resumed>) = 0 [pid 915] <... close resumed>) = 0 [pid 913] close(3 [pid 309] <... openat resumed>) = 3 [pid 917] <... ioctl resumed>) = 0 [pid 916] close(3 [pid 915] close(3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 916] <... close resumed>) = 0 [pid 913] <... close resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 916] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 915] <... close resumed>) = 0 [pid 913] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] close(3 [pid 918] ioctl(4, LOOP_SET_FD, 3 [pid 916] <... openat resumed>) = 3 [pid 915] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 913] <... openat resumed>) = 3 [pid 309] <... close resumed>) = 0 [pid 918] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 917] ioctl(4, LOOP_SET_FD, 3 [pid 916] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 917] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 916] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 917] close(4 [pid 916] exit_group(0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 919 [pid 917] <... close resumed>) = 0 [pid 916] <... exit_group resumed>) = ? [pid 917] close(3 [pid 916] +++ exited with 0 +++ [pid 917] <... close resumed>) = 0 [pid 917] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 918] close(4 [pid 917] ioctl(3, BLKSECDISCARD, [0, 0] [pid 915] <... openat resumed>) = 3 [pid 913] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=916, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 918] <... close resumed>) = 0 [pid 917] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 915] ioctl(3, BLKSECDISCARD, [0, 0] [pid 913] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 918] close(3 [pid 917] exit_group(0 [pid 915] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 913] exit_group(0 [pid 917] <... exit_group resumed>) = ? [pid 918] <... close resumed>) = 0 [pid 917] +++ exited with 0 +++ [pid 915] exit_group(0 [pid 913] <... exit_group resumed>) = ? [pid 918] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 915] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 919 attached [pid 913] +++ exited with 0 +++ [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=917, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=913, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 915] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=915, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 918] <... openat resumed>) = 3 [pid 918] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 918] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] <... restart_syscall resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 918] exit_group(0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 306] <... openat resumed>) = 3 [pid 305] <... openat resumed>) = 3 [pid 918] <... exit_group resumed>) = ? [pid 305] ioctl(3, LOOP_CLR_FD [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 307] <... ioctl resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 305] <... ioctl resumed>) = 0 [pid 310] <... openat resumed>) = 3 [pid 305] close(3 [pid 918] +++ exited with 0 +++ [pid 310] ioctl(3, LOOP_CLR_FD [pid 307] close(3 [pid 306] <... ioctl resumed>) = 0 [pid 305] <... close resumed>) = 0 [pid 919] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 310] <... ioctl resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 306] close(3 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 919] <... prctl resumed>) = 0 [pid 310] close(3 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=918, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] <... close resumed>) = 0 [pid 919] setpgid(0, 0 [pid 310] <... close resumed>) = 0 [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 920 [pid 919] <... setpgid resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] <... restart_syscall resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 919] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 921 [pid 919] <... openat resumed>) = 3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 922 [pid 919] write(3, "1000", 4 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 923 [pid 919] <... write resumed>) = 4 [pid 308] <... openat resumed>) = 3 [pid 919] close(3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 919] <... close resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 919] memfd_create("syzkaller", 0 [pid 308] close(3./strace-static-x86_64: Process 922 attached ./strace-static-x86_64: Process 920 attached [pid 919] <... memfd_create resumed>) = 3 [pid 308] <... close resumed>) = 0 [pid 919] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 922] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 920] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 919] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 920] <... prctl resumed>) = 0 [pid 919] 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 922] <... prctl resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 924 [pid 922] setpgid(0, 0 [pid 920] setpgid(0, 0./strace-static-x86_64: Process 924 attached ./strace-static-x86_64: Process 921 attached [pid 922] <... setpgid resumed>) = 0 [pid 920] <... setpgid resumed>) = 0 [pid 922] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 924] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 922] <... openat resumed>) = 3 [pid 921] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 920] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 919] <... write resumed>) = 262144 [pid 924] <... prctl resumed>) = 0 [pid 922] write(3, "1000", 4 [pid 921] <... prctl resumed>) = 0 [pid 920] <... openat resumed>) = 3 [pid 924] setpgid(0, 0 [pid 922] <... write resumed>) = 4 [pid 921] setpgid(0, 0 [pid 920] write(3, "1000", 4 [pid 919] munmap(0x7f7bfe3d8000, 262144 [pid 924] <... setpgid resumed>) = 0 [pid 922] close(3 [pid 921] <... setpgid resumed>) = 0 [pid 920] <... write resumed>) = 4 [pid 919] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 923 attached [pid 924] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 922] <... close resumed>) = 0 [pid 921] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 920] close(3 [pid 919] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 924] <... openat resumed>) = 3 [pid 923] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 922] memfd_create("syzkaller", 0 [pid 921] <... openat resumed>) = 3 [pid 920] <... close resumed>) = 0 [pid 919] <... openat resumed>) = 4 [pid 924] write(3, "1000", 4 [pid 923] <... prctl resumed>) = 0 [pid 922] <... memfd_create resumed>) = 3 [pid 921] write(3, "1000", 4 [pid 920] memfd_create("syzkaller", 0 [pid 919] ioctl(4, LOOP_SET_FD, 3 [pid 924] <... write resumed>) = 4 [pid 923] setpgid(0, 0 [pid 922] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 921] <... write resumed>) = 4 [pid 919] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 923] <... setpgid resumed>) = 0 [pid 919] ioctl(4, LOOP_CLR_FD [pid 923] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 919] <... ioctl resumed>) = 0 [pid 923] <... openat resumed>) = 3 [pid 923] write(3, "1000", 4 [pid 922] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 920] <... memfd_create resumed>) = 3 [pid 923] <... write resumed>) = 4 [pid 920] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 923] close(3) = 0 [pid 923] memfd_create("syzkaller", 0 [pid 919] ioctl(4, LOOP_SET_FD, 3 [pid 923] <... memfd_create resumed>) = 3 [pid 922] 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 920] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 919] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 923] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 919] close(4 [pid 923] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 919] <... close resumed>) = 0 [pid 923] 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 922] <... write resumed>) = 262144 [pid 919] close(3 [pid 923] <... write resumed>) = 262144 [pid 922] munmap(0x7f7bfe3d8000, 262144 [pid 920] 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 919] <... close resumed>) = 0 [pid 924] close(3 [pid 919] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 919] ioctl(3, BLKSECDISCARD, [0, 0] [pid 923] munmap(0x7f7bfe3d8000, 262144 [pid 919] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 923] <... munmap resumed>) = 0 [pid 920] <... write resumed>) = 262144 [pid 919] exit_group(0 [pid 924] <... close resumed>) = 0 [pid 922] <... munmap resumed>) = 0 [pid 920] munmap(0x7f7bfe3d8000, 262144 [pid 923] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 922] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 920] <... munmap resumed>) = 0 [pid 919] <... exit_group resumed>) = ? [pid 924] memfd_create("syzkaller", 0 [pid 921] close(3 [pid 923] <... openat resumed>) = 4 [pid 920] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 919] +++ exited with 0 +++ [pid 922] <... openat resumed>) = 4 [pid 924] <... memfd_create resumed>) = 3 [pid 923] ioctl(4, LOOP_SET_FD, 3 [pid 922] ioctl(4, LOOP_SET_FD, 3 [pid 921] <... close resumed>) = 0 [pid 920] <... openat resumed>) = 4 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=919, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 924] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 923] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 922] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 921] memfd_create("syzkaller", 0 [pid 920] ioctl(4, LOOP_SET_FD, 3 [pid 924] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 923] ioctl(4, LOOP_CLR_FD [pid 922] ioctl(4, LOOP_CLR_FD [pid 921] <... memfd_create resumed>) = 3 [pid 920] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 920] ioctl(4, LOOP_CLR_FD [pid 922] <... ioctl resumed>) = 0 [pid 920] <... ioctl resumed>) = 0 [pid 923] <... ioctl resumed>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 924] 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 921] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 921] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 309] <... ioctl resumed>) = 0 [pid 923] ioctl(4, LOOP_SET_FD, 3 [pid 309] close(3 [pid 922] ioctl(4, LOOP_SET_FD, 3 [pid 923] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 922] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 920] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... close resumed>) = 0 [pid 923] close(4 [pid 920] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 922] close(4 [pid 924] <... write resumed>) = 262144 [pid 923] <... close resumed>) = 0 [pid 922] <... close resumed>) = 0 [pid 921] 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 920] close(4 [pid 924] munmap(0x7f7bfe3d8000, 262144 [pid 923] close(3 [pid 922] close(3 [pid 920] <... close resumed>) = 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 925 [pid 924] <... munmap resumed>) = 0 [pid 923] <... close resumed>) = 0 [pid 921] <... write resumed>) = 262144 [pid 923] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 920] close(3 [pid 924] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 923] <... openat resumed>) = 3 [pid 922] <... close resumed>) = 0 [pid 921] munmap(0x7f7bfe3d8000, 262144 [pid 924] <... openat resumed>) = 4 [pid 923] ioctl(3, BLKSECDISCARD, [0, 0] [pid 922] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 920] <... close resumed>) = 0 [pid 924] ioctl(4, LOOP_SET_FD, 3 [pid 923] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 922] <... openat resumed>) = 3 [pid 921] <... munmap resumed>) = 0 [pid 920] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 924] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 923] exit_group(0 [pid 922] ioctl(3, BLKSECDISCARD, [0, 0] [pid 921] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 924] ioctl(4, LOOP_CLR_FD [pid 923] <... exit_group resumed>) = ? [pid 922] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 921] <... openat resumed>) = 4 [pid 920] <... openat resumed>) = 3 [pid 924] <... ioctl resumed>) = 0 [pid 923] +++ exited with 0 +++ [pid 922] exit_group(0 [pid 921] ioctl(4, LOOP_SET_FD, 3 [pid 920] ioctl(3, BLKSECDISCARD, [0, 0] [pid 922] <... exit_group resumed>) = ? [pid 921] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 920] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=923, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 925 attached [pid 925] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 922] +++ exited with 0 +++ [pid 921] ioctl(4, LOOP_CLR_FD [pid 920] exit_group(0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=922, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 921] <... ioctl resumed>) = 0 [pid 920] <... exit_group resumed>) = ? [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 924] ioctl(4, LOOP_SET_FD, 3 [pid 310] <... restart_syscall resumed>) = 0 [pid 920] +++ exited with 0 +++ [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 924] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 306] <... openat resumed>) = 3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=920, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 925] <... prctl resumed>) = 0 [pid 924] close(4 [pid 310] <... openat resumed>) = 3 [pid 306] ioctl(3, LOOP_CLR_FD [pid 925] setpgid(0, 0 [pid 924] <... close resumed>) = 0 [pid 921] ioctl(4, LOOP_SET_FD, 3 [pid 310] ioctl(3, LOOP_CLR_FD [pid 306] <... ioctl resumed>) = 0 [pid 925] <... setpgid resumed>) = 0 [pid 924] close(3 [pid 921] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] <... ioctl resumed>) = 0 [pid 306] close(3 [pid 925] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 310] close(3 [pid 925] <... openat resumed>) = 3 [pid 310] <... close resumed>) = 0 [pid 925] write(3, "1000", 4 [pid 924] <... close resumed>) = 0 [pid 921] close(4 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] <... close resumed>) = 0 [pid 925] <... write resumed>) = 4 [pid 924] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 921] <... close resumed>) = 0 [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 925] close(3 [pid 924] <... openat resumed>) = 3 [pid 921] close(3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 926 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 925] <... close resumed>) = 0 [pid 924] ioctl(3, BLKSECDISCARD, [0, 0] [pid 305] <... openat resumed>) = 3 [pid 925] memfd_create("syzkaller", 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 925] <... memfd_create resumed>) = 3 [pid 924] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 921] <... close resumed>) = 0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 927 [pid 305] <... ioctl resumed>) = 0 [pid 925] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 924] exit_group(0 [pid 921] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] close(3 [pid 925] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 924] <... exit_group resumed>) = ? [pid 921] <... openat resumed>) = 3 [pid 305] <... close resumed>) = 0 [pid 925] 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 924] +++ exited with 0 +++ [pid 921] ioctl(3, BLKSECDISCARD, [0, 0] [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 926 attached [pid 925] <... write resumed>) = 262144 [pid 921] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=924, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 926] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 921] exit_group(0 [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 928 [pid 926] <... prctl resumed>) = 0 [pid 925] munmap(0x7f7bfe3d8000, 262144 [pid 921] <... exit_group resumed>) = ? [pid 308] <... restart_syscall resumed>) = 0 [pid 926] setpgid(0, 0 [pid 925] <... munmap resumed>) = 0 [pid 926] <... setpgid resumed>) = 0 [pid 925] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 921] +++ exited with 0 +++ [pid 926] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 925] <... openat resumed>) = 4 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 926] <... openat resumed>) = 3 [pid 925] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... openat resumed>) = 3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=921, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 926] write(3, "1000", 4 [pid 925] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 308] ioctl(3, LOOP_CLR_FD [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR./strace-static-x86_64: Process 928 attached [pid 926] <... write resumed>) = 4 [pid 925] ioctl(4, LOOP_CLR_FD [pid 308] <... ioctl resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 928] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 926] close(3 [pid 925] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 928] <... prctl resumed>) = 0 [pid 926] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 927 attached [pid 928] setpgid(0, 0 [pid 926] memfd_create("syzkaller", 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 307] close(3 [pid 928] <... setpgid resumed>) = 0 [pid 927] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 926] <... memfd_create resumed>) = 3 [pid 307] <... close resumed>) = 0 [pid 928] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 927] <... prctl resumed>) = 0 [pid 926] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 925] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 929 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 928] <... openat resumed>) = 3 [pid 927] setpgid(0, 0 [pid 926] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 925] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 927] <... setpgid resumed>) = 0 [pid 925] close(4 [pid 927] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 925] <... close resumed>) = 0 [pid 927] <... openat resumed>) = 3 [pid 925] close(3 [pid 928] write(3, "1000", 4 [pid 927] write(3, "1000", 4 [pid 926] 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 925] <... close resumed>) = 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 930 [pid 928] <... write resumed>) = 4 [pid 927] <... write resumed>) = 4 [pid 925] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 927] close(3 [pid 925] <... openat resumed>) = 3 [pid 927] <... close resumed>) = 0 [pid 925] ioctl(3, BLKSECDISCARD, [0, 0] [pid 928] close(3 [pid 927] memfd_create("syzkaller", 0 [pid 926] <... write resumed>) = 262144 [pid 925] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 928] <... close resumed>) = 0 [pid 927] <... memfd_create resumed>) = 3 [pid 926] munmap(0x7f7bfe3d8000, 262144 [pid 925] exit_group(0 [pid 928] memfd_create("syzkaller", 0 [pid 927] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 925] <... exit_group resumed>) = ? [pid 928] <... memfd_create resumed>) = 3 [pid 927] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 926] <... munmap resumed>) = 0 [pid 925] +++ exited with 0 +++ [pid 927] 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 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=925, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 928] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 927] <... write resumed>) = 262144 [pid 926] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 928] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 926] <... openat resumed>) = 4 [pid 926] ioctl(4, LOOP_SET_FD, 3 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 926] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] ioctl(3, LOOP_CLR_FD [pid 927] munmap(0x7f7bfe3d8000, 262144 [pid 926] ioctl(4, LOOP_CLR_FD [pid 309] <... ioctl resumed>) = 0 [pid 928] 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 927] <... munmap resumed>) = 0 [pid 926] <... ioctl resumed>) = 0 [pid 309] close(3./strace-static-x86_64: Process 930 attached [pid 927] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 309] <... close resumed>) = 0 [pid 930] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 928] <... write resumed>) = 262144 [pid 927] <... openat resumed>) = 4 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 929 attached [pid 930] <... prctl resumed>) = 0 [pid 928] munmap(0x7f7bfe3d8000, 262144 [pid 927] ioctl(4, LOOP_SET_FD, 3 [pid 930] setpgid(0, 0 [pid 928] <... munmap resumed>) = 0 [pid 927] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 929] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 926] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 931 [pid 930] <... setpgid resumed>) = 0 [pid 929] <... prctl resumed>) = 0 [pid 928] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 927] ioctl(4, LOOP_CLR_FD [pid 926] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 930] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 929] setpgid(0, 0 [pid 928] <... openat resumed>) = 4 [pid 927] <... ioctl resumed>) = 0 [pid 926] close(4 [pid 930] <... openat resumed>) = 3 [pid 929] <... setpgid resumed>) = 0 [pid 928] ioctl(4, LOOP_SET_FD, 3 [pid 926] <... close resumed>) = 0 [pid 930] write(3, "1000", 4 [pid 929] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 928] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 926] close(3 [pid 930] <... write resumed>) = 4 [pid 928] ioctl(4, LOOP_CLR_FD [pid 930] close(3) = 0 [pid 930] memfd_create("syzkaller", 0 [pid 928] <... ioctl resumed>) = 0 [pid 926] <... close resumed>) = 0 [pid 930] <... memfd_create resumed>) = 3 [pid 929] <... openat resumed>) = 3 [pid 927] ioctl(4, LOOP_SET_FD, 3 [pid 926] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 930] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 929] write(3, "1000", 4 [pid 927] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 926] <... openat resumed>) = 3 [pid 930] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 929] <... write resumed>) = 4 [pid 927] close(4 [pid 926] ioctl(3, BLKSECDISCARD, [0, 0]./strace-static-x86_64: Process 931 attached [pid 930] 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 929] close(3 [pid 928] ioctl(4, LOOP_SET_FD, 3 [pid 927] <... close resumed>) = 0 [pid 926] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 931] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 930] <... write resumed>) = 262144 [pid 929] <... close resumed>) = 0 [pid 928] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 927] close(3 [pid 926] exit_group(0 [pid 931] <... prctl resumed>) = 0 [pid 930] munmap(0x7f7bfe3d8000, 262144 [pid 929] memfd_create("syzkaller", 0 [pid 928] close(4 [pid 927] <... close resumed>) = 0 [pid 926] <... exit_group resumed>) = ? [pid 931] setpgid(0, 0 [pid 930] <... munmap resumed>) = 0 [pid 929] <... memfd_create resumed>) = 3 [pid 928] <... close resumed>) = 0 [pid 927] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 930] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 927] <... openat resumed>) = 3 [pid 926] +++ exited with 0 +++ [pid 931] <... setpgid resumed>) = 0 [pid 930] <... openat resumed>) = 4 [pid 929] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 928] close(3 [pid 927] ioctl(3, BLKSECDISCARD, [0, 0] [pid 931] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 930] ioctl(4, LOOP_SET_FD, 3 [pid 929] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 927] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=926, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 930] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 928] <... close resumed>) = 0 [pid 927] exit_group(0 [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 930] ioctl(4, LOOP_CLR_FD [pid 927] <... exit_group resumed>) = ? [pid 310] <... restart_syscall resumed>) = 0 [pid 931] <... openat resumed>) = 3 [pid 930] <... ioctl resumed>) = 0 [pid 929] 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 928] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 927] +++ exited with 0 +++ [pid 931] write(3, "1000", 4 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 310] ioctl(3, LOOP_CLR_FD) = 0 [pid 310] close(3) = 0 [pid 931] <... write resumed>) = 4 [pid 929] <... write resumed>) = 262144 [pid 928] <... openat resumed>) = 3 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=927, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 931] close(3 [pid 930] ioctl(4, LOOP_SET_FD, 3 [pid 929] munmap(0x7f7bfe3d8000, 262144 [pid 928] ioctl(3, BLKSECDISCARD, [0, 0] [pid 931] <... close resumed>) = 0 [pid 930] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 929] <... munmap resumed>) = 0 [pid 928] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 932 [pid 931] memfd_create("syzkaller", 0 [pid 930] close(4 [pid 929] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 928] exit_group(0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 931] <... memfd_create resumed>) = 3 [pid 930] <... close resumed>) = 0 [pid 929] <... openat resumed>) = 4 [pid 928] <... exit_group resumed>) = ? [pid 931] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 930] close(3 [pid 929] ioctl(4, LOOP_SET_FD, 3 [pid 306] <... openat resumed>) = 3 [pid 931] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 930] <... close resumed>) = 0 [pid 928] +++ exited with 0 +++ [pid 930] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=928, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 930] <... openat resumed>) = 3 [pid 930] ioctl(3, BLKSECDISCARD, [0, 0] [pid 929] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 306] ioctl(3, LOOP_CLR_FD [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 305] ioctl(3, LOOP_CLR_FD) = 0 [pid 305] close(3 [pid 931] 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 305] <... close resumed>) = 0 [pid 930] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 929] ioctl(4, LOOP_CLR_FD [pid 306] <... ioctl resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 930] exit_group(0 [pid 931] <... write resumed>) = 262144 [pid 930] <... exit_group resumed>) = ? [pid 929] <... ioctl resumed>) = 0 [pid 306] close(3 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 933 [pid 930] +++ exited with 0 +++ ./strace-static-x86_64: Process 933 attached [pid 933] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 933] setpgid(0, 0) = 0 [pid 933] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 933] write(3, "1000", 4) = 4 [pid 933] close(3) = 0 [pid 931] munmap(0x7f7bfe3d8000, 262144 [pid 306] <... close resumed>) = 0 [pid 931] <... munmap resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=930, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 931] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 307] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 931] <... openat resumed>) = 4 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 934 [pid 931] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 932 attached ) = -1 EBUSY (Device or resource busy) [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 931] ioctl(4, LOOP_CLR_FD [pid 929] ioctl(4, LOOP_SET_FD, 3 [pid 307] <... openat resumed>) = 3 [pid 931] <... ioctl resumed>) = 0 [pid 929] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 307] ioctl(3, LOOP_CLR_FD [pid 929] close(4 [pid 307] <... ioctl resumed>) = 0 [pid 929] <... close resumed>) = 0 [pid 307] close(3 [pid 932] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 929] close(3 [pid 307] <... close resumed>) = 0 [pid 932] <... prctl resumed>) = 0 [pid 929] <... close resumed>) = 0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 929] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 933] memfd_create("syzkaller", 0) = 3 [pid 932] setpgid(0, 0 [pid 931] ioctl(4, LOOP_SET_FD, 3 [pid 929] <... openat resumed>) = 3 [pid 932] <... setpgid resumed>) = 0 [pid 931] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 929] ioctl(3, BLKSECDISCARD, [0, 0] [pid 931] close(4 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 935 [pid 931] <... close resumed>) = 0 [pid 932] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 929] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 931] close(3 [pid 932] <... openat resumed>) = 3 [pid 929] exit_group(0 [pid 933] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 932] write(3, "1000", 4 [pid 931] <... close resumed>) = 0 [pid 929] <... exit_group resumed>) = ? [pid 933] 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 929] +++ exited with 0 +++ [pid 932] <... write resumed>) = 4 [pid 931] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=929, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 932] close(3 [pid 931] <... openat resumed>) = 3 [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 932] <... close resumed>) = 0 [pid 931] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] <... restart_syscall resumed>) = 0 [pid 933] <... write resumed>) = 262144 [pid 932] memfd_create("syzkaller", 0 [pid 931] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 932] <... memfd_create resumed>) = 3 [pid 931] exit_group(0 [pid 932] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 931] <... exit_group resumed>) = ? [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 932] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 931] +++ exited with 0 +++ [pid 308] <... ioctl resumed>) = 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=931, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] close(3) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 933] munmap(0x7f7bfe3d8000, 262144 [pid 932] 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 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR./strace-static-x86_64: Process 935 attached [pid 933] <... munmap resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 936 [pid 935] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 933] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 932] <... write resumed>) = 262144 [pid 309] ioctl(3, LOOP_CLR_FD [pid 935] <... prctl resumed>) = 0 [pid 933] <... openat resumed>) = 4 [pid 932] munmap(0x7f7bfe3d8000, 262144 [pid 309] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 934 attached [pid 935] setpgid(0, 0 [pid 933] ioctl(4, LOOP_SET_FD, 3 [pid 932] <... munmap resumed>) = 0 [pid 309] close(3./strace-static-x86_64: Process 936 attached [pid 935] <... setpgid resumed>) = 0 [pid 934] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 933] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 932] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 309] <... close resumed>) = 0 [pid 935] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 934] <... prctl resumed>) = 0 [pid 933] ioctl(4, LOOP_CLR_FD [pid 932] <... openat resumed>) = 4 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 936] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 935] <... openat resumed>) = 3 [pid 934] setpgid(0, 0 [pid 933] <... ioctl resumed>) = 0 [pid 932] ioctl(4, LOOP_SET_FD, 3 [pid 936] <... prctl resumed>) = 0 [pid 935] write(3, "1000", 4 [pid 934] <... setpgid resumed>) = 0 [pid 932] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 937 [pid 936] setpgid(0, 0 [pid 935] <... write resumed>) = 4 [pid 934] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 935] close(3 [pid 934] <... openat resumed>) = 3 [pid 935] <... close resumed>) = 0 [pid 934] write(3, "1000", 4 [pid 935] memfd_create("syzkaller", 0 [pid 934] <... write resumed>) = 4 [pid 933] ioctl(4, LOOP_SET_FD, 3 [pid 935] <... memfd_create resumed>) = 3 [pid 934] close(3 [pid 933] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 935] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 934] <... close resumed>) = 0 [pid 933] close(4 [pid 935] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 934] memfd_create("syzkaller", 0 [pid 933] <... close resumed>) = 0 [pid 935] 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 934] <... memfd_create resumed>) = 3 [pid 933] close(3./strace-static-x86_64: Process 937 attached [pid 936] <... setpgid resumed>) = 0 [pid 935] <... write resumed>) = 262144 [pid 934] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 933] <... close resumed>) = 0 [pid 932] ioctl(4, LOOP_CLR_FD [pid 937] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 936] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 935] munmap(0x7f7bfe3d8000, 262144 [pid 934] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 933] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 932] <... ioctl resumed>) = 0 [pid 937] <... prctl resumed>) = 0 [pid 936] <... openat resumed>) = 3 [pid 935] <... munmap resumed>) = 0 [pid 934] 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 933] <... openat resumed>) = 3 [pid 937] setpgid(0, 0 [pid 936] write(3, "1000", 4 [pid 935] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 934] <... write resumed>) = 262144 [pid 933] ioctl(3, BLKSECDISCARD, [0, 0] [pid 937] <... setpgid resumed>) = 0 [pid 936] <... write resumed>) = 4 [pid 935] <... openat resumed>) = 4 [pid 934] munmap(0x7f7bfe3d8000, 262144 [pid 933] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 937] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 936] close(3 [pid 935] ioctl(4, LOOP_SET_FD, 3 [pid 934] <... munmap resumed>) = 0 [pid 933] exit_group(0 [pid 937] <... openat resumed>) = 3 [pid 936] <... close resumed>) = 0 [pid 935] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 934] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 933] <... exit_group resumed>) = ? [pid 932] ioctl(4, LOOP_SET_FD, 3 [pid 937] write(3, "1000", 4 [pid 936] memfd_create("syzkaller", 0 [pid 935] ioctl(4, LOOP_CLR_FD [pid 934] <... openat resumed>) = 4 [pid 933] +++ exited with 0 +++ [pid 932] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 937] <... write resumed>) = 4 [pid 936] <... memfd_create resumed>) = 3 [pid 935] <... ioctl resumed>) = 0 [pid 934] ioctl(4, LOOP_SET_FD, 3 [pid 932] close(4 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=933, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 937] close(3 [pid 936] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 934] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 932] <... close resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 937] <... close resumed>) = 0 [pid 936] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 934] ioctl(4, LOOP_CLR_FD [pid 932] close(3 [pid 305] <... restart_syscall resumed>) = 0 [pid 937] memfd_create("syzkaller", 0 [pid 934] <... ioctl resumed>) = 0 [pid 935] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 936] 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 935] close(4 [pid 305] <... openat resumed>) = 3 [pid 937] <... memfd_create resumed>) = 3 [pid 935] <... close resumed>) = 0 [pid 932] <... close resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 935] close(3 [pid 934] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... ioctl resumed>) = 0 [pid 937] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 936] <... write resumed>) = 262144 [pid 935] <... close resumed>) = 0 [pid 934] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 932] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] close(3 [pid 937] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 936] munmap(0x7f7bfe3d8000, 262144 [pid 935] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 934] close(4 [pid 932] <... openat resumed>) = 3 [pid 305] <... close resumed>) = 0 [pid 935] <... openat resumed>) = 3 [pid 934] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 937] 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 935] ioctl(3, BLKSECDISCARD, [0, 0] [pid 934] close(3 [pid 932] ioctl(3, BLKSECDISCARD, [0, 0] [pid 937] <... write resumed>) = 262144 [pid 936] <... munmap resumed>) = 0 [pid 935] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 934] <... close resumed>) = 0 [pid 932] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 938 [pid 937] munmap(0x7f7bfe3d8000, 262144 [pid 936] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 935] exit_group(0 [pid 934] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 932] exit_group(0 [pid 937] <... munmap resumed>) = 0 [pid 936] <... openat resumed>) = 4 [pid 935] <... exit_group resumed>) = ? [pid 934] <... openat resumed>) = 3 [pid 932] <... exit_group resumed>) = ? [pid 937] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 936] ioctl(4, LOOP_SET_FD, 3 [pid 935] +++ exited with 0 +++ [pid 934] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 936] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 934] exit_group(0 [pid 932] +++ exited with 0 +++ [pid 937] <... openat resumed>) = 4 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=935, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 937] ioctl(4, LOOP_SET_FD, 3 [pid 936] ioctl(4, LOOP_CLR_FD [pid 934] <... exit_group resumed>) = ? [pid 937] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 936] <... ioctl resumed>) = 0 [pid 934] +++ exited with 0 +++ [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=932, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=934, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 938 attached [pid 937] ioctl(4, LOOP_CLR_FD [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 938] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 937] <... ioctl resumed>) = 0 [pid 310] <... restart_syscall resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 938] <... prctl resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 938] setpgid(0, 0 [pid 307] <... ioctl resumed>) = 0 [pid 938] <... setpgid resumed>) = 0 [pid 936] ioctl(4, LOOP_SET_FD, 3 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 938] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 936] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] <... openat resumed>) = 3 [pid 307] close(3 [pid 938] <... openat resumed>) = 3 [pid 936] close(4 [pid 310] ioctl(3, LOOP_CLR_FD [pid 938] write(3, "1000", 4 [pid 937] ioctl(4, LOOP_SET_FD, 3 [pid 936] <... close resumed>) = 0 [pid 310] <... ioctl resumed>) = 0 [pid 307] <... close resumed>) = 0 [pid 938] <... write resumed>) = 4 [pid 937] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 936] close(3 [pid 310] close(3 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 938] close(3 [pid 937] close(4 [pid 310] <... close resumed>) = 0 [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 938] <... close resumed>) = 0 [pid 937] <... close resumed>) = 0 [pid 936] <... close resumed>) = 0 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 938] memfd_create("syzkaller", 0 [pid 937] close(3 [pid 936] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 940 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 939 [pid 306] <... openat resumed>) = 3 ./strace-static-x86_64: Process 939 attached [pid 937] <... close resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 937] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 936] <... openat resumed>) = 3 [pid 306] <... ioctl resumed>) = 0 [pid 937] <... openat resumed>) = 3 [pid 306] close(3 [pid 936] ioctl(3, BLKSECDISCARD, [0, 0] [pid 937] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] <... close resumed>) = 0 [pid 938] <... memfd_create resumed>) = 3 [pid 937] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 936] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 938] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 937] exit_group(0 [pid 938] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 937] <... exit_group resumed>) = ? [pid 936] exit_group(0 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 941 [pid 939] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 937] +++ exited with 0 +++ [pid 936] <... exit_group resumed>) = ? [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=937, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 936] +++ exited with 0 +++ [pid 309] <... restart_syscall resumed>) = 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=936, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 939] <... prctl resumed>) = 0 [pid 938] 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 309] <... openat resumed>) = 3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 939] setpgid(0, 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] <... openat resumed>) = 3 [pid 939] <... setpgid resumed>) = 0 [pid 309] <... ioctl resumed>) = 0 [pid 308] ioctl(3, LOOP_CLR_FD [pid 939] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 309] close(3 [pid 308] <... ioctl resumed>) = 0 [pid 939] <... openat resumed>) = 3 [pid 938] <... write resumed>) = 262144 [pid 309] <... close resumed>) = 0 [pid 308] close(3 [pid 939] write(3, "1000", 4 [pid 938] munmap(0x7f7bfe3d8000, 262144 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] <... close resumed>) = 0 ./strace-static-x86_64: Process 940 attached [pid 939] <... write resumed>) = 4 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 939] close(3 [pid 940] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 942 [pid 939] <... close resumed>) = 0 [pid 940] <... prctl resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 943 [pid 939] memfd_create("syzkaller", 0 [pid 940] setpgid(0, 0 [pid 939] <... memfd_create resumed>) = 3 [pid 940] <... setpgid resumed>) = 0 [pid 939] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 940] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 939] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 940] <... openat resumed>) = 3 [pid 939] 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 940] write(3, "1000", 4 [pid 938] <... munmap resumed>) = 0 [pid 939] <... write resumed>) = 262144 [pid 940] <... write resumed>) = 4 [pid 938] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 940] close(3 [pid 938] <... openat resumed>) = 4 [pid 940] <... close resumed>) = 0 [pid 938] ioctl(4, LOOP_SET_FD, 3 [pid 940] memfd_create("syzkaller", 0 [pid 938] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 941 attached [pid 940] <... memfd_create resumed>) = 3 [pid 938] ioctl(4, LOOP_CLR_FD) = 0 [pid 941] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 939] munmap(0x7f7bfe3d8000, 262144 [pid 940] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 939] <... munmap resumed>) = 0 [pid 940] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 941] <... prctl resumed>) = 0 [pid 941] setpgid(0, 0 [pid 939] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 940] 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 941] <... setpgid resumed>) = 0 [pid 939] <... openat resumed>) = 4 [pid 940] <... write resumed>) = 262144 [pid 938] ioctl(4, LOOP_SET_FD, 3 [pid 941] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 939] ioctl(4, LOOP_SET_FD, 3 [pid 938] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 943 attached [pid 941] <... openat resumed>) = 3 [pid 939] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 938] close(4 [pid 941] write(3, "1000", 4 [pid 938] <... close resumed>) = 0 [pid 941] <... write resumed>) = 4 [pid 938] close(3 [pid 941] close(3 [pid 943] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 939] ioctl(4, LOOP_CLR_FD [pid 940] munmap(0x7f7bfe3d8000, 262144./strace-static-x86_64: Process 942 attached [pid 943] <... prctl resumed>) = 0 [pid 941] <... close resumed>) = 0 [pid 939] <... ioctl resumed>) = 0 [pid 940] <... munmap resumed>) = 0 [pid 938] <... close resumed>) = 0 [pid 943] setpgid(0, 0 [pid 942] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 941] memfd_create("syzkaller", 0 [pid 940] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 938] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 943] <... setpgid resumed>) = 0 [pid 942] <... prctl resumed>) = 0 [pid 941] <... memfd_create resumed>) = 3 [pid 940] <... openat resumed>) = 4 [pid 938] <... openat resumed>) = 3 [pid 943] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 942] setpgid(0, 0 [pid 941] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 940] ioctl(4, LOOP_SET_FD, 3 [pid 938] ioctl(3, BLKSECDISCARD, [0, 0] [pid 943] <... openat resumed>) = 3 [pid 942] <... setpgid resumed>) = 0 [pid 941] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 940] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 938] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 943] write(3, "1000", 4 [pid 942] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 939] ioctl(4, LOOP_SET_FD, 3 [pid 943] <... write resumed>) = 4 [pid 942] <... openat resumed>) = 3 [pid 939] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 940] ioctl(4, LOOP_CLR_FD [pid 943] close(3 [pid 942] write(3, "1000", 4 [pid 941] 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 939] close(4 [pid 940] <... ioctl resumed>) = 0 [pid 938] exit_group(0 [pid 943] <... close resumed>) = 0 [pid 942] <... write resumed>) = 4 [pid 939] <... close resumed>) = 0 [pid 943] memfd_create("syzkaller", 0 [pid 942] close(3 [pid 941] <... write resumed>) = 262144 [pid 939] close(3 [pid 938] <... exit_group resumed>) = ? [pid 943] <... memfd_create resumed>) = 3 [pid 942] <... close resumed>) = 0 [pid 941] munmap(0x7f7bfe3d8000, 262144 [pid 939] <... close resumed>) = 0 [pid 943] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 942] memfd_create("syzkaller", 0 [pid 939] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 940] ioctl(4, LOOP_SET_FD, 3 [pid 938] +++ exited with 0 +++ [pid 943] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 942] <... memfd_create resumed>) = 3 [pid 941] <... munmap resumed>) = 0 [pid 939] <... openat resumed>) = 3 [pid 940] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=938, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 943] 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 942] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 941] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 939] ioctl(3, BLKSECDISCARD, [0, 0] [pid 940] close(4 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 943] <... write resumed>) = 262144 [pid 942] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 941] <... openat resumed>) = 4 [pid 939] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 940] <... close resumed>) = 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 943] munmap(0x7f7bfe3d8000, 262144 [pid 942] 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 941] ioctl(4, LOOP_SET_FD, 3 [pid 939] exit_group(0 [pid 940] close(3 [pid 943] <... munmap resumed>) = 0 [pid 942] <... write resumed>) = 262144 [pid 941] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 939] <... exit_group resumed>) = ? [pid 940] <... close resumed>) = 0 [pid 943] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 942] munmap(0x7f7bfe3d8000, 262144 [pid 941] ioctl(4, LOOP_CLR_FD [pid 939] +++ exited with 0 +++ [pid 940] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 943] <... openat resumed>) = 4 [pid 942] <... munmap resumed>) = 0 [pid 941] <... ioctl resumed>) = 0 [pid 940] <... openat resumed>) = 3 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=939, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] <... openat resumed>) = 3 [pid 943] ioctl(4, LOOP_SET_FD, 3 [pid 942] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 940] ioctl(3, BLKSECDISCARD, [0, 0] [pid 305] ioctl(3, LOOP_CLR_FD [pid 943] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 942] <... openat resumed>) = 4 [pid 940] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] <... ioctl resumed>) = 0 [pid 943] ioctl(4, LOOP_CLR_FD [pid 942] ioctl(4, LOOP_SET_FD, 3 [pid 940] exit_group(0 [pid 305] close(3 [pid 943] <... ioctl resumed>) = 0 [pid 942] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 940] <... exit_group resumed>) = ? [pid 305] <... close resumed>) = 0 [pid 942] ioctl(4, LOOP_CLR_FD [pid 941] ioctl(4, LOOP_SET_FD, 3 [pid 940] +++ exited with 0 +++ [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 942] <... ioctl resumed>) = 0 [pid 941] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=940, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 941] close(4 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 944 [pid 943] ioctl(4, LOOP_SET_FD, 3 [pid 941] <... close resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 943] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 941] close(3 [pid 307] ioctl(3, LOOP_CLR_FD [pid 943] close(4) = 0 [pid 943] close(3 [pid 942] ioctl(4, LOOP_SET_FD, 3 [pid 943] <... close resumed>) = 0 [pid 942] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 941] <... close resumed>) = 0 [pid 307] <... ioctl resumed>) = 0 [pid 943] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 942] close(4 [pid 941] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 307] close(3 [pid 943] <... openat resumed>) = 3 [pid 942] <... close resumed>) = 0 [pid 941] <... openat resumed>) = 3 [pid 310] <... openat resumed>) = 3 [pid 307] <... close resumed>) = 0 ./strace-static-x86_64: Process 944 attached [pid 943] ioctl(3, BLKSECDISCARD, [0, 0] [pid 942] close(3 [pid 941] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] ioctl(3, LOOP_CLR_FD [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 944] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 943] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 942] <... close resumed>) = 0 [pid 941] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 310] <... ioctl resumed>) = 0 [pid 944] <... prctl resumed>) = 0 [pid 943] exit_group(0 [pid 942] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] close(3 [pid 943] <... exit_group resumed>) = ? [pid 942] <... openat resumed>) = 3 [pid 941] exit_group(0 [pid 310] <... close resumed>) = 0 [pid 944] setpgid(0, 0 [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 945 [pid 944] <... setpgid resumed>) = 0 [pid 943] +++ exited with 0 +++ [pid 942] ioctl(3, BLKSECDISCARD, [0, 0] [pid 941] <... exit_group resumed>) = ? [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 944] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 942] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 941] +++ exited with 0 +++ [pid 944] <... openat resumed>) = 3 [pid 942] exit_group(0 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 946 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=943, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 944] write(3, "1000", 4 [pid 942] <... exit_group resumed>) = ? [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=941, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 945 attached [pid 944] <... write resumed>) = 4 [pid 942] +++ exited with 0 +++ [pid 308] <... openat resumed>) = 3 [pid 306] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 945] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 944] close(3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=942, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 308] ioctl(3, LOOP_CLR_FD [pid 306] <... openat resumed>) = 3 [pid 945] <... prctl resumed>) = 0 [pid 944] <... close resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 306] ioctl(3, LOOP_CLR_FD [pid 945] setpgid(0, 0 [pid 944] memfd_create("syzkaller", 0 [pid 308] close(3 [pid 306] <... ioctl resumed>) = 0 [pid 945] <... setpgid resumed>) = 0 [pid 944] <... memfd_create resumed>) = 3 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] <... close resumed>) = 0 [pid 306] close(3 [pid 945] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 944] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 309] <... openat resumed>) = 3 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 306] <... close resumed>) = 0 [pid 945] <... openat resumed>) = 3 [pid 944] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 309] ioctl(3, LOOP_CLR_FD [pid 306] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 945] write(3, "1000", 4 [pid 309] <... ioctl resumed>) = 0 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 947 [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 944] 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 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 948 ./strace-static-x86_64: Process 947 attached [pid 947] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 945] <... write resumed>) = 4 [pid 944] <... write resumed>) = 262144 [pid 306] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 949 [pid 945] close(3 [pid 944] munmap(0x7f7bfe3d8000, 262144 [pid 945] <... close resumed>) = 0 [pid 944] <... munmap resumed>) = 0 [pid 945] memfd_create("syzkaller", 0 [pid 944] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 945] <... memfd_create resumed>) = 3 [pid 944] <... openat resumed>) = 4 [pid 945] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 944] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 946 attached [pid 945] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 944] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 944] ioctl(4, LOOP_CLR_FD) = 0 [pid 947] <... prctl resumed>) = 0 [pid 945] 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 947] setpgid(0, 0) = 0 [pid 944] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 944] close(4) = 0 [pid 947] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 944] close(3./strace-static-x86_64: Process 948 attached [pid 947] <... openat resumed>) = 3 [pid 945] <... write resumed>) = 262144 [pid 948] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 947] write(3, "1000", 4 [pid 945] munmap(0x7f7bfe3d8000, 262144 [pid 944] <... close resumed>) = 0 [pid 946] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 948] <... prctl resumed>) = 0 [pid 947] <... write resumed>) = 4 [pid 946] <... prctl resumed>) = 0 [pid 945] <... munmap resumed>) = 0 [pid 944] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 948] setpgid(0, 0 [pid 947] close(3 [pid 946] setpgid(0, 0 [pid 945] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 944] <... openat resumed>) = 3 [pid 948] <... setpgid resumed>) = 0 [pid 947] <... close resumed>) = 0 [pid 948] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 947] memfd_create("syzkaller", 0 [pid 946] <... setpgid resumed>) = 0 [pid 945] <... openat resumed>) = 4 [pid 944] ioctl(3, BLKSECDISCARD, [0, 0]./strace-static-x86_64: Process 949 attached [pid 948] <... openat resumed>) = 3 [pid 947] <... memfd_create resumed>) = 3 [pid 946] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 945] ioctl(4, LOOP_SET_FD, 3 [pid 944] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 948] write(3, "1000", 4 [pid 947] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 946] <... openat resumed>) = 3 [pid 945] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 949] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 944] exit_group(0 [pid 949] <... prctl resumed>) = 0 [pid 948] <... write resumed>) = 4 [pid 947] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 946] write(3, "1000", 4 [pid 945] ioctl(4, LOOP_CLR_FD [pid 944] <... exit_group resumed>) = ? [pid 948] close(3 [pid 947] 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 948] <... close resumed>) = 0 [pid 948] memfd_create("syzkaller", 0 [pid 947] <... write resumed>) = 262144 [pid 948] <... memfd_create resumed>) = 3 [pid 948] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 948] 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 949] setpgid(0, 0 [pid 948] <... write resumed>) = 262144 [pid 947] munmap(0x7f7bfe3d8000, 262144 [pid 946] <... write resumed>) = 4 [pid 945] <... ioctl resumed>) = 0 [pid 944] +++ exited with 0 +++ [pid 949] <... setpgid resumed>) = 0 [pid 947] <... munmap resumed>) = 0 [pid 946] close(3 [pid 948] munmap(0x7f7bfe3d8000, 262144 [pid 947] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=944, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 948] <... munmap resumed>) = 0 [pid 947] <... openat resumed>) = 4 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 948] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 947] ioctl(4, LOOP_SET_FD, 3 [pid 305] <... openat resumed>) = 3 [pid 948] <... openat resumed>) = 4 [pid 947] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 305] ioctl(3, LOOP_CLR_FD [pid 948] ioctl(4, LOOP_SET_FD, 3 [pid 947] ioctl(4, LOOP_CLR_FD [pid 305] <... ioctl resumed>) = 0 [pid 948] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 947] <... ioctl resumed>) = 0 [pid 305] close(3 [pid 948] ioctl(4, LOOP_CLR_FD [pid 305] <... close resumed>) = 0 [pid 948] <... ioctl resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 950 [pid 947] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 947] close(4) = 0 [pid 948] ioctl(4, LOOP_SET_FD, 3 [pid 947] close(3 [pid 948] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 947] <... close resumed>) = 0 [pid 948] close(4 [pid 947] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 948] <... close resumed>) = 0 [pid 947] <... openat resumed>) = 3 [pid 948] close(3 [pid 947] ioctl(3, BLKSECDISCARD, [0, 0] [pid 948] <... close resumed>) = 0 [pid 947] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 948] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 947] exit_group(0 [pid 948] <... openat resumed>) = 3 [pid 947] <... exit_group resumed>) = ? [pid 949] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 948] ioctl(3, BLKSECDISCARD, [0, 0] [pid 947] +++ exited with 0 +++ [pid 946] <... close resumed>) = 0 [pid 949] <... openat resumed>) = 3 [pid 948] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 946] memfd_create("syzkaller", 0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=947, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 949] write(3, "1000", 4 [pid 948] exit_group(0 [pid 946] <... memfd_create resumed>) = 3 [pid 945] ioctl(4, LOOP_SET_FD, 3 [pid 949] <... write resumed>) = 4 [pid 948] <... exit_group resumed>) = ? [pid 946] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 945] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 949] close(3 [pid 948] +++ exited with 0 +++ [pid 946] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 945] close(4 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 949] <... close resumed>) = 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=948, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 308] <... openat resumed>) = 3 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 308] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 950 attached [pid 309] <... restart_syscall resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 950] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 949] memfd_create("syzkaller", 0 [pid 946] 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 945] <... close resumed>) = 0 [pid 308] close(3 [pid 950] <... prctl resumed>) = 0 [pid 949] <... memfd_create resumed>) = 3 [pid 945] close(3 [pid 308] <... close resumed>) = 0 [pid 950] setpgid(0, 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 950] <... setpgid resumed>) = 0 [pid 946] <... write resumed>) = 262144 [pid 309] <... openat resumed>) = 3 [pid 950] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 949] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 946] munmap(0x7f7bfe3d8000, 262144 [pid 945] <... close resumed>) = 0 [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 951 [pid 950] <... openat resumed>) = 3 [pid 949] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 946] <... munmap resumed>) = 0 [pid 945] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] <... ioctl resumed>) = 0 [pid 950] write(3, "1000", 4 [pid 309] close(3 [pid 950] <... write resumed>) = 4 [pid 309] <... close resumed>) = 0 [pid 950] close(3 [pid 945] <... openat resumed>) = 3 [pid 946] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 950] <... close resumed>) = 0 [pid 950] memfd_create("syzkaller", 0 [pid 946] <... openat resumed>) = 4 [pid 945] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 952 [pid 950] <... memfd_create resumed>) = 3 [pid 949] 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 946] ioctl(4, LOOP_SET_FD, 3 [pid 945] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 950] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 950] 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 949] <... write resumed>) = 262144 [pid 946] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 945] exit_group(0 [pid 950] <... write resumed>) = 262144 [pid 949] munmap(0x7f7bfe3d8000, 262144 [pid 950] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 950] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 950] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 950] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 951 attached [pid 951] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 950] ioctl(4, LOOP_SET_FD, 3 [pid 951] setpgid(0, 0 [pid 950] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 951] <... setpgid resumed>) = 0 [pid 950] close(4 [pid 951] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 950] <... close resumed>) = 0 ./strace-static-x86_64: Process 952 attached [pid 951] <... openat resumed>) = 3 [pid 950] close(3 [pid 952] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 951] write(3, "1000", 4 [pid 950] <... close resumed>) = 0 [pid 952] <... prctl resumed>) = 0 [pid 951] <... write resumed>) = 4 [pid 950] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 952] setpgid(0, 0 [pid 951] close(3 [pid 950] <... openat resumed>) = 3 [pid 952] <... setpgid resumed>) = 0 [pid 951] <... close resumed>) = 0 [pid 950] ioctl(3, BLKSECDISCARD, [0, 0] [pid 952] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 951] memfd_create("syzkaller", 0 [pid 950] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 952] <... openat resumed>) = 3 [pid 951] <... memfd_create resumed>) = 3 [pid 950] exit_group(0 [pid 952] write(3, "1000", 4 [pid 951] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 950] <... exit_group resumed>) = ? [pid 952] <... write resumed>) = 4 [pid 951] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 950] +++ exited with 0 +++ [pid 952] close(3 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=950, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 952] <... close resumed>) = 0 [pid 952] memfd_create("syzkaller", 0 [pid 951] 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 952] <... memfd_create resumed>) = 3 [pid 952] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 952] 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 951] <... write resumed>) = 262144 [pid 305] openat(AT_FDCWD, "/dev/loop0", 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=0x5555561ed5d0) = 953 [pid 951] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 951] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 952] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 951] <... openat resumed>) = 4 [pid 951] ioctl(4, LOOP_SET_FD, 3 [pid 952] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 951] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 952] <... openat resumed>) = 4 [pid 951] ioctl(4, LOOP_CLR_FD [pid 952] ioctl(4, LOOP_SET_FD, 3 [pid 951] <... ioctl resumed>) = 0 [pid 952] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 952] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 953 attached [pid 953] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 951] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 952] ioctl(4, LOOP_SET_FD, 3 [ 27.328005][ T324] ------------[ cut here ]------------ [ 27.333502][ T324] kernel BUG at fs/buffer.c:3027! [ 27.352300][ T324] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 27.358498][ T324] CPU: 0 PID: 324 Comm: kmmpd-loop5 Not tainted 5.4.225-syzkaller-00003-gf4e4be09c27c #0 [ 27.368313][ T324] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023 [pid 951] close(4 [pid 952] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 951] <... close resumed>) = 0 [pid 952] close(4 [pid 951] close(3 [pid 952] <... close resumed>) = 0 [pid 951] <... close resumed>) = 0 [pid 952] close(3 [pid 951] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 952] <... close resumed>) = 0 [pid 951] <... openat resumed>) = 3 [pid 953] <... prctl resumed>) = 0 [pid 952] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 951] ioctl(3, BLKSECDISCARD, [0, 0] [pid 953] setpgid(0, 0 [pid 952] <... openat resumed>) = 3 [pid 951] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 953] <... setpgid resumed>) = 0 [pid 952] ioctl(3, BLKSECDISCARD, [0, 0] [pid 951] exit_group(0 [pid 953] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 952] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 951] <... exit_group resumed>) = ? [pid 953] <... openat resumed>) = 3 [pid 952] exit_group(0 [pid 951] +++ exited with 0 +++ [pid 953] write(3, "1000", 4 [pid 952] <... exit_group resumed>) = ? [pid 953] <... write resumed>) = 4 [pid 952] +++ exited with 0 +++ [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=951, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 953] close(3 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 953] <... close resumed>) = 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=952, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 308] <... openat resumed>) = 3 [pid 953] memfd_create("syzkaller", 0 [pid 309] restart_syscall(<... resuming interrupted clone ...> [pid 308] ioctl(3, LOOP_CLR_FD [pid 953] <... memfd_create resumed>) = 3 [pid 309] <... restart_syscall resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 953] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 308] close(3 [pid 953] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 308] <... close resumed>) = 0 [pid 953] 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 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 954 [pid 309] <... ioctl resumed>) = 0 [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 955 [pid 953] <... write resumed>) = 262144 [pid 953] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 953] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 953] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 953] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 954 attached [pid 954] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 955 attached [pid 953] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 953] close(4) = 0 [pid 953] close(3) = 0 [pid 955] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 954] <... prctl resumed>) = 0 [pid 955] <... prctl resumed>) = 0 [pid 954] setpgid(0, 0 [pid 955] setpgid(0, 0 [pid 954] <... setpgid resumed>) = 0 [pid 953] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 955] <... setpgid resumed>) = 0 [pid 954] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 953] <... openat resumed>) = 3 [pid 955] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 954] <... openat resumed>) = 3 [pid 953] ioctl(3, BLKSECDISCARD, [0, 0] [pid 955] <... openat resumed>) = 3 [pid 954] write(3, "1000", 4 [pid 953] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 955] write(3, "1000", 4 [pid 954] <... write resumed>) = 4 [pid 953] exit_group(0 [pid 955] <... write resumed>) = 4 [pid 954] close(3 [pid 953] <... exit_group resumed>) = ? [pid 955] close(3 [pid 954] <... close resumed>) = 0 [pid 953] +++ exited with 0 +++ [pid 955] <... close resumed>) = 0 [pid 954] memfd_create("syzkaller", 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=953, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 955] memfd_create("syzkaller", 0 [pid 954] <... memfd_create resumed>) = 3 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 955] <... memfd_create resumed>) = 3 [pid 954] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 955] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 954] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 955] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 954] 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 955] 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 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 954] <... write resumed>) = 262144 [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, child_tidptr=0x5555561ed5d0) = 956 [pid 954] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 955] <... write resumed>) = 262144 [pid 954] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 955] munmap(0x7f7bfe3d8000, 262144 [pid 954] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 954] ioctl(4, LOOP_CLR_FD [pid 955] <... munmap resumed>) = 0 [pid 954] <... ioctl resumed>) = 0 [pid 955] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 955] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 955] ioctl(4, LOOP_CLR_FD) = 0 [pid 954] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 954] close(4) = 0 [pid 954] close(3) = 0 [pid 955] ioctl(4, LOOP_SET_FD, 3 [pid 954] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 955] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 954] <... openat resumed>) = 3 ./strace-static-x86_64: Process 956 attached [pid 955] close(4 [pid 954] ioctl(3, BLKSECDISCARD, [0, 0] [pid 956] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 955] <... close resumed>) = 0 [pid 954] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 956] <... prctl resumed>) = 0 [pid 955] close(3 [pid 954] exit_group(0 [pid 956] setpgid(0, 0 [pid 955] <... close resumed>) = 0 [pid 954] <... exit_group resumed>) = ? [pid 956] <... setpgid resumed>) = 0 [pid 955] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 954] +++ exited with 0 +++ [pid 956] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 955] <... openat resumed>) = 3 [pid 956] <... openat resumed>) = 3 [pid 955] ioctl(3, BLKSECDISCARD, [0, 0] [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=954, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 956] write(3, "1000", 4 [pid 955] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 956] <... write resumed>) = 4 [pid 955] exit_group(0 [pid 308] <... openat resumed>) = 3 [pid 956] close(3 [pid 955] <... exit_group resumed>) = ? [pid 308] ioctl(3, LOOP_CLR_FD [pid 956] <... close resumed>) = 0 [pid 955] +++ exited with 0 +++ [pid 308] <... ioctl resumed>) = 0 [pid 956] memfd_create("syzkaller", 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=955, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [ 27.378479][ T324] RIP: 0010:submit_bh_wbc+0x779/0x7a0 [ 27.383960][ T324] Code: 08 80 e1 07 80 c1 03 38 c1 0f 8c c8 fe ff ff 48 8b 7c 24 08 e8 68 ed ed ff e9 b9 fe ff ff e8 2e 6c c0 ff 0f 0b e8 27 6c c0 ff <0f> 0b e8 20 6c c0 ff 0f 0b e8 19 6c c0 ff 0f 0b e8 12 6c c0 ff 0f [ 27.403566][ T324] RSP: 0018:ffff8881dc4afc08 EFLAGS: 00010293 [ 27.409905][ T324] RAX: ffffffff81a2cad9 RBX: 0000000000000000 RCX: ffff8881dcfb2f40 [ 27.417971][ T324] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [pid 308] close(3 [pid 956] <... memfd_create resumed>) = 3 [pid 308] <... close resumed>) = 0 [pid 956] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 956] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 956] 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 309] <... openat resumed>) = 3 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 957 [pid 956] <... write resumed>) = 262144 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 958 [pid 956] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 956] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 956] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 956] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 958 attached [pid 958] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 956] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 956] close(4) = 0 [pid 956] close(3) = 0 [pid 956] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 956] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 956] exit_group(0) = ? [pid 958] setpgid(0, 0 [pid 956] +++ exited with 0 +++ [pid 958] <... setpgid resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=956, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 958] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 957 attached ) = 3 [pid 958] write(3, "1000", 4 [pid 957] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 958] <... write resumed>) = 4 [pid 957] <... prctl resumed>) = 0 [pid 958] close(3 [pid 957] setpgid(0, 0 [pid 958] <... close resumed>) = 0 [pid 957] <... setpgid resumed>) = 0 [pid 958] memfd_create("syzkaller", 0 [pid 957] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 958] <... memfd_create resumed>) = 3 [pid 957] <... openat resumed>) = 3 [pid 958] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 957] write(3, "1000", 4 [pid 958] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 957] <... write resumed>) = 4 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 957] close(3 [pid 305] <... openat resumed>) = 3 [pid 958] 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 957] <... close resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 957] memfd_create("syzkaller", 0 [pid 305] <... ioctl resumed>) = 0 [pid 957] <... memfd_create resumed>) = 3 [pid 305] close(3 [pid 957] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 305] <... close resumed>) = 0 [pid 957] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 958] <... write resumed>) = 262144 [pid 957] 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 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 959 [pid 957] <... write resumed>) = 262144 [pid 958] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 958] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 958] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 957] munmap(0x7f7bfe3d8000, 262144 [pid 958] ioctl(4, LOOP_CLR_FD) = 0 [pid 957] <... munmap resumed>) = 0 [pid 957] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 957] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 957] ioctl(4, LOOP_CLR_FD [pid 958] ioctl(4, LOOP_SET_FD, 3 [pid 957] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 959 attached [pid 958] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 959] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 958] close(4 [pid 959] <... prctl resumed>) = 0 [pid 958] <... close resumed>) = 0 [pid 959] setpgid(0, 0 [pid 958] close(3 [pid 959] <... setpgid resumed>) = 0 [pid 958] <... close resumed>) = 0 [pid 959] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 957] ioctl(4, LOOP_SET_FD, 3 [pid 959] <... openat resumed>) = 3 [pid 958] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 957] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 959] write(3, "1000", 4 [pid 958] <... openat resumed>) = 3 [pid 957] close(4 [pid 959] <... write resumed>) = 4 [pid 958] ioctl(3, BLKSECDISCARD, [0, 0] [pid 957] <... close resumed>) = 0 [pid 959] close(3 [pid 958] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 957] close(3 [pid 959] <... close resumed>) = 0 [pid 958] exit_group(0 [pid 957] <... close resumed>) = 0 [pid 959] memfd_create("syzkaller", 0 [pid 958] <... exit_group resumed>) = ? [pid 957] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 959] <... memfd_create resumed>) = 3 [pid 958] +++ exited with 0 +++ [pid 957] <... openat resumed>) = 3 [pid 959] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 957] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=958, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 959] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 957] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 959] 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 957] exit_group(0) = ? [pid 959] <... write resumed>) = 262144 [pid 957] +++ exited with 0 +++ [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=957, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 960 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3 [pid 959] munmap(0x7f7bfe3d8000, 262144 [pid 308] <... close resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 959] <... munmap resumed>) = 0 [pid 959] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 961 [pid 959] <... openat resumed>) = 4 [pid 959] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 959] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 960 attached [ 27.425952][ T324] RBP: 1ffff1103ccdc93b R08: ffffffff81a2c3f9 R09: ffffed103ccdc93c [ 27.434476][ T324] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 [ 27.442455][ T324] R13: ffff8881e66e49d8 R14: dffffc0000000000 R15: 0000000000003800 [ 27.450526][ T324] FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 27.459465][ T324] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 27.466140][ T324] CR2: 00007f7c06868808 CR3: 00000001e82fb000 CR4: 00000000003406f0 [pid 960] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 959] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 959] close(4) = 0 [pid 959] close(3) = 0 [pid 959] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 959] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 959] exit_group(0) = ? [pid 959] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=959, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 960] <... prctl resumed>) = 0 [pid 960] setpgid(0, 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 960] <... setpgid resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 960] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 305] ioctl(3, LOOP_CLR_FD [pid 960] <... openat resumed>) = 3 [pid 305] <... ioctl resumed>) = 0 [pid 960] write(3, "1000", 4 [pid 305] close(3 [pid 960] <... write resumed>) = 4 [pid 305] <... close resumed>) = 0 ./strace-static-x86_64: Process 961 attached [pid 960] close(3 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 961] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 960] <... close resumed>) = 0 [pid 961] <... prctl resumed>) = 0 [pid 960] memfd_create("syzkaller", 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 962 [pid 961] setpgid(0, 0 [pid 960] <... memfd_create resumed>) = 3 [pid 961] <... setpgid resumed>) = 0 [pid 960] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 961] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 960] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 961] <... openat resumed>) = 3 [pid 960] 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 961] write(3, "1000", 4) = 4 [pid 961] close(3) = 0 [pid 961] memfd_create("syzkaller", 0) = 3 [pid 961] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 961] 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 960] <... write resumed>) = 262144 [pid 960] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 961] <... write resumed>) = 262144 [pid 960] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 960] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 960] ioctl(4, LOOP_CLR_FD) = 0 [pid 961] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 961] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 960] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 962 attached [pid 961] ioctl(4, LOOP_SET_FD, 3 [pid 960] close(4 [pid 962] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 961] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 960] <... close resumed>) = 0 [pid 962] <... prctl resumed>) = 0 [pid 961] ioctl(4, LOOP_CLR_FD [pid 960] close(3 [pid 962] setpgid(0, 0 [pid 961] <... ioctl resumed>) = 0 [pid 960] <... close resumed>) = 0 [pid 962] <... setpgid resumed>) = 0 [pid 960] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 962] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 960] <... openat resumed>) = 3 [pid 962] <... openat resumed>) = 3 [pid 960] ioctl(3, BLKSECDISCARD, [0, 0] [pid 962] write(3, "1000", 4 [pid 960] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 962] <... write resumed>) = 4 [pid 961] ioctl(4, LOOP_SET_FD, 3 [pid 960] exit_group(0 [pid 962] close(3 [pid 961] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 960] <... exit_group resumed>) = ? [pid 962] <... close resumed>) = 0 [pid 961] close(4 [pid 960] +++ exited with 0 +++ [pid 962] memfd_create("syzkaller", 0 [pid 961] <... close resumed>) = 0 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=960, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 962] <... memfd_create resumed>) = 3 [pid 961] close(3 [pid 962] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 961] <... close resumed>) = 0 [pid 962] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 961] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 962] 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 961] <... openat resumed>) = 3 [pid 309] <... openat resumed>) = 3 [pid 962] <... write resumed>) = 262144 [pid 961] ioctl(3, BLKSECDISCARD, [0, 0] [pid 309] ioctl(3, LOOP_CLR_FD [pid 961] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 309] <... ioctl resumed>) = 0 [pid 961] exit_group(0 [pid 309] close(3 [pid 961] <... exit_group resumed>) = ? [pid 309] <... close resumed>) = 0 [pid 961] +++ exited with 0 +++ [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=961, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 963 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 308] ioctl(3, LOOP_CLR_FD) = 0 [pid 308] close(3 [pid 962] munmap(0x7f7bfe3d8000, 262144 [pid 308] <... close resumed>) = 0 [pid 962] <... munmap resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 964 [pid 962] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 962] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 962] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 963 attached [pid 963] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 962] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 962] close(4) = 0 [pid 962] close(3) = 0 [pid 962] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 962] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 962] exit_group(0) = ? [pid 962] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=962, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 964 attached [pid 963] setpgid(0, 0 [pid 305] <... openat resumed>) = 3 [pid 964] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 963] <... setpgid resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 964] <... prctl resumed>) = 0 [pid 963] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 305] <... ioctl resumed>) = 0 [pid 964] setpgid(0, 0 [pid 963] <... openat resumed>) = 3 [pid 305] close(3 [pid 964] <... setpgid resumed>) = 0 [pid 963] write(3, "1000", 4 [pid 305] <... close resumed>) = 0 [pid 964] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 963] <... write resumed>) = 4 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 964] <... openat resumed>) = 3 [pid 963] close(3 [pid 964] write(3, "1000", 4 [pid 963] <... close resumed>) = 0 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 965 [pid 964] <... write resumed>) = 4 [pid 963] memfd_create("syzkaller", 0 [pid 964] close(3 [pid 963] <... memfd_create resumed>) = 3 [pid 964] <... close resumed>) = 0 [ 27.474119][ T324] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.482159][ T324] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.490219][ T324] Call Trace: [ 27.493521][ T324] ? detach_if_pending+0xc8/0x340 [ 27.498555][ T324] ? _raw_spin_unlock_irqrestore+0x57/0x80 [ 27.504399][ T324] submit_bh+0x21/0x30 [ 27.508570][ T324] write_mmp_block+0x3ff/0x5b0 [ 27.513434][ T324] ? console_conditional_schedule+0x10/0x10 [ 27.519470][ T324] ? read_mmp_block+0x8a0/0x8a0 [ 27.524854][ T324] kmmpd+0x34f/0xa10 [pid 963] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 964] memfd_create("syzkaller", 0 [pid 963] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 964] <... memfd_create resumed>) = 3 [pid 963] 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 964] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 964] 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 963] <... write resumed>) = 262144 [pid 963] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 964] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 963] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 964] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 963] <... openat resumed>) = 4 [pid 963] ioctl(4, LOOP_SET_FD, 3 [pid 964] ioctl(4, LOOP_SET_FD, 3 [pid 963] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 964] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 964] ioctl(4, LOOP_CLR_FD [pid 963] ioctl(4, LOOP_CLR_FD [pid 964] <... ioctl resumed>) = 0 [pid 963] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 965 attached [pid 965] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 964] ioctl(4, LOOP_SET_FD, 3 [pid 963] ioctl(4, LOOP_SET_FD, 3 [pid 964] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 963] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 964] close(4 [pid 963] close(4 [pid 965] <... prctl resumed>) = 0 [pid 964] <... close resumed>) = 0 [pid 963] <... close resumed>) = 0 [pid 965] setpgid(0, 0 [pid 964] close(3 [pid 963] close(3 [pid 965] <... setpgid resumed>) = 0 [pid 964] <... close resumed>) = 0 [pid 963] <... close resumed>) = 0 [pid 965] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 964] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 963] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 965] <... openat resumed>) = 3 [pid 964] <... openat resumed>) = 3 [pid 963] <... openat resumed>) = 3 [pid 965] write(3, "1000", 4 [pid 964] ioctl(3, BLKSECDISCARD, [0, 0] [pid 963] ioctl(3, BLKSECDISCARD, [0, 0] [pid 965] <... write resumed>) = 4 [pid 964] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 963] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 965] close(3 [pid 964] exit_group(0 [pid 963] exit_group(0 [pid 965] <... close resumed>) = 0 [pid 964] <... exit_group resumed>) = ? [pid 963] <... exit_group resumed>) = ? [pid 965] memfd_create("syzkaller", 0 [pid 964] +++ exited with 0 +++ [pid 963] +++ exited with 0 +++ [pid 965] <... memfd_create resumed>) = 3 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=963, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=964, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 965] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 965] 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 309] <... openat resumed>) = 3 [pid 308] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] ioctl(3, LOOP_CLR_FD [pid 309] <... ioctl resumed>) = 0 [pid 308] <... ioctl resumed>) = 0 [pid 309] close(3 [pid 308] close(3 [pid 309] <... close resumed>) = 0 [pid 308] <... close resumed>) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 966 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 967 [pid 965] <... write resumed>) = 262144 [pid 965] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 965] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 965] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 965] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 967 attached [pid 967] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 967] setpgid(0, 0 [pid 965] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 965] close(4) = 0 [pid 965] close(3) = 0 [pid 965] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 965] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 967] <... setpgid resumed>) = 0 [pid 965] exit_group(0 [pid 967] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 965] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 966 attached [pid 967] <... openat resumed>) = 3 [pid 965] +++ exited with 0 +++ [pid 967] write(3, "1000", 4 [pid 966] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=965, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 967] <... write resumed>) = 4 [pid 966] <... prctl resumed>) = 0 [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 967] close(3 [pid 966] setpgid(0, 0 [pid 305] <... restart_syscall resumed>) = 0 [pid 967] <... close resumed>) = 0 [pid 966] <... setpgid resumed>) = 0 [pid 967] memfd_create("syzkaller", 0 [pid 966] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 967] <... memfd_create resumed>) = 3 [pid 966] <... openat resumed>) = 3 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 967] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 966] write(3, "1000", 4 [pid 946] ioctl(4, LOOP_CLR_FD [pid 945] <... exit_group resumed>) = ? [pid 305] <... openat resumed>) = 3 [pid 967] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 966] <... write resumed>) = 4 [pid 305] ioctl(3, LOOP_CLR_FD [pid 967] 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 966] close(3 [pid 945] +++ exited with 0 +++ [pid 305] <... ioctl resumed>) = 0 [pid 966] <... close resumed>) = 0 [pid 946] <... ioctl resumed>) = 0 [pid 305] close(3 [pid 966] memfd_create("syzkaller", 0 [pid 949] <... munmap resumed>) = 0 [pid 307] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=945, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] <... close resumed>) = 0 [ 27.528865][ T324] ? write_mmp_block+0x5b0/0x5b0 [ 27.533947][ T324] ? __wake_up_locked+0xb7/0x110 [ 27.538986][ T324] ? __kthread_parkme+0xb0/0x1b0 [ 27.543939][ T324] kthread+0x2da/0x360 [ 27.548018][ T324] ? write_mmp_block+0x5b0/0x5b0 [ 27.552970][ T324] ? kthread_destroy_worker+0x200/0x200 [ 27.558533][ T324] ret_from_fork+0x1f/0x30 [ 27.562955][ T324] Modules linked in: [ 27.570264][ T324] ---[ end trace 9e9ec3d195d66c20 ]--- [pid 967] <... write resumed>) = 262144 [pid 966] <... memfd_create resumed>) = 3 [pid 949] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 966] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 968 [pid 966] 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 967] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 967] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 966] munmap(0x7f7bfe3d8000, 262144 [pid 967] <... openat resumed>) = 4 [pid 966] <... munmap resumed>) = 0 [pid 967] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 967] ioctl(4, LOOP_CLR_FD) = 0 [pid 966] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [pid 966] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 966] ioctl(4, LOOP_CLR_FD) = 0 [pid 967] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 967] close(4) = 0 [pid 967] close(3) = 0 [pid 966] ioctl(4, LOOP_SET_FD, 3./strace-static-x86_64: Process 968 attached ) = -1 EBUSY (Device or resource busy) [pid 968] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 967] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 966] close(4 [pid 968] <... prctl resumed>) = 0 [pid 967] <... openat resumed>) = 3 [pid 966] <... close resumed>) = 0 [pid 968] setpgid(0, 0 [pid 967] ioctl(3, BLKSECDISCARD, [0, 0] [pid 966] close(3 [pid 968] <... setpgid resumed>) = 0 [pid 967] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 966] <... close resumed>) = 0 [pid 968] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 967] exit_group(0 [pid 966] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 968] <... openat resumed>) = 3 [pid 967] <... exit_group resumed>) = ? [pid 966] <... openat resumed>) = 3 [pid 968] write(3, "1000", 4 [pid 967] +++ exited with 0 +++ [pid 966] ioctl(3, BLKSECDISCARD, [0, 0] [pid 968] <... write resumed>) = 4 [pid 966] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 968] close(3 [pid 966] exit_group(0 [pid 308] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=967, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 968] <... close resumed>) = 0 [pid 966] <... exit_group resumed>) = ? [pid 308] restart_syscall(<... resuming interrupted clone ...> [pid 968] memfd_create("syzkaller", 0 [pid 966] +++ exited with 0 +++ [pid 949] <... openat resumed>) = 4 [pid 946] ioctl(4, LOOP_SET_FD, 3 [pid 308] <... restart_syscall resumed>) = 0 [pid 968] <... memfd_create resumed>) = 3 [pid 949] ioctl(4, LOOP_SET_FD, 3 [pid 946] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=966, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 968] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 308] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 968] 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 949] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 946] close(4 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 308] <... openat resumed>) = 3 [pid 307] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 949] ioctl(4, LOOP_CLR_FD [pid 946] <... close resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 308] ioctl(3, LOOP_CLR_FD [pid 949] <... ioctl resumed>) = 0 [pid 946] close(3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 308] <... ioctl resumed>) = 0 [pid 307] <... openat resumed>) = 3 [pid 309] <... ioctl resumed>) = 0 [pid 308] close(3 [pid 968] <... write resumed>) = 262144 [pid 946] <... close resumed>) = 0 [pid 309] close(3 [pid 308] <... close resumed>) = 0 [pid 307] ioctl(3, LOOP_CLR_FD [pid 309] <... close resumed>) = 0 [pid 308] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 968] munmap(0x7f7bfe3d8000, 262144 [pid 308] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 969 [pid 968] <... munmap resumed>) = 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 970 [pid 968] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 968] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 968] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 970 attached [pid 970] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 968] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 968] close(4) = 0 [pid 968] close(3./strace-static-x86_64: Process 969 attached ) = 0 [pid 946] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 307] <... ioctl resumed>) = 0 [pid 968] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000) = 3 [pid 968] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 968] exit_group(0) = ? [pid 968] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=968, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 305] restart_syscall(<... resuming interrupted clone ...> [pid 970] <... prctl resumed>) = 0 [pid 970] setpgid(0, 0) = 0 [pid 970] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 305] <... restart_syscall resumed>) = 0 [pid 970] write(3, "1000", 4) = 4 [pid 970] close(3 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 970] <... close resumed>) = 0 [pid 305] <... openat resumed>) = 3 [pid 970] memfd_create("syzkaller", 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 970] <... memfd_create resumed>) = 3 [pid 305] <... ioctl resumed>) = 0 [pid 970] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 305] close(3 [pid 970] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 305] <... close resumed>) = 0 [pid 969] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 949] ioctl(4, LOOP_SET_FD, 3 [pid 946] <... openat resumed>) = 3 [pid 307] close(3 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 971 [pid 970] 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 970] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 970] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 4 [ 27.575996][ T324] RIP: 0010:submit_bh_wbc+0x779/0x7a0 [ 27.583396][ T324] Code: 08 80 e1 07 80 c1 03 38 c1 0f 8c c8 fe ff ff 48 8b 7c 24 08 e8 68 ed ed ff e9 b9 fe ff ff e8 2e 6c c0 ff 0f 0b e8 27 6c c0 ff <0f> 0b e8 20 6c c0 ff 0f 0b e8 19 6c c0 ff 0f 0b e8 12 6c c0 ff 0f [ 27.611002][ T324] RSP: 0018:ffff8881dc4afc08 EFLAGS: 00010293 [ 27.617274][ T324] RAX: ffffffff81a2cad9 RBX: 0000000000000000 RCX: ffff8881dcfb2f40 ./strace-static-x86_64: Process 971 attached [pid 970] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 970] ioctl(4, LOOP_CLR_FD) = 0 [pid 971] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 969] <... prctl resumed>) = 0 [pid 949] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 946] ioctl(3, BLKSECDISCARD, [0, 0] [pid 307] <... close resumed>) = 0 [pid 969] setpgid(0, 0 [pid 949] close(4 [pid 946] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 971] <... prctl resumed>) = 0 [pid 971] setpgid(0, 0) = 0 [pid 971] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 970] ioctl(4, LOOP_SET_FD, 3 [pid 971] write(3, "1000", 4 [pid 970] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 971] <... write resumed>) = 4 [pid 970] close(4 [pid 971] close(3 [pid 970] <... close resumed>) = 0 [pid 971] <... close resumed>) = 0 [pid 970] close(3 [pid 971] memfd_create("syzkaller", 0 [pid 970] <... close resumed>) = 0 [pid 971] <... memfd_create resumed>) = 3 [pid 970] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 971] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 970] <... openat resumed>) = 3 [pid 971] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 970] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 971] 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 970] exit_group(0) = ? [pid 970] +++ exited with 0 +++ [pid 969] <... setpgid resumed>) = 0 [pid 949] <... close resumed>) = 0 [pid 946] exit_group(0 [pid 307] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=970, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 309] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 309] ioctl(3, LOOP_CLR_FD) = 0 [pid 309] close(3) = 0 [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555561ed5d0) = 972 [pid 971] <... write resumed>) = 262144 [pid 971] munmap(0x7f7bfe3d8000, 262144) = 0 [pid 971] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 971] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 971] ioctl(4, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 972 attached [pid 969] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 949] close(3 [pid 946] <... exit_group resumed>) = ? [pid 971] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 971] close(4) = 0 [pid 971] close(3 [pid 946] +++ exited with 0 +++ [pid 971] <... close resumed>) = 0 [pid 949] <... close resumed>) = 0 [pid 310] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=946, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 971] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 969] <... openat resumed>) = 3 [pid 949] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 310] restart_syscall(<... resuming interrupted clone ...> [pid 307] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 973 [pid 971] <... openat resumed>) = 3 [pid 310] <... restart_syscall resumed>) = 0 [pid 971] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 971] exit_group(0 [pid 310] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 971] <... exit_group resumed>) = ? [pid 310] <... openat resumed>) = 3 [pid 971] +++ exited with 0 +++ [pid 310] ioctl(3, LOOP_CLR_FD [pid 972] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 969] write(3, "1000", 4 [pid 949] <... openat resumed>) = 3 [pid 310] <... ioctl resumed>) = 0 [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=971, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 972] <... prctl resumed>) = 0 [pid 310] close(3 [pid 972] setpgid(0, 0 [pid 310] <... close resumed>) = 0 [pid 972] <... setpgid resumed>) = 0 [pid 969] <... write resumed>) = 4 [pid 949] ioctl(3, BLKSECDISCARD, [0, 0] [pid 310] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 972] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 969] close(3 [pid 949] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 305] <... openat resumed>) = 3 [pid 972] <... openat resumed>) = 3 [pid 310] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 974 [pid 305] ioctl(3, LOOP_CLR_FD [pid 972] write(3, "1000", 4 [pid 305] <... ioctl resumed>) = 0 [pid 972] <... write resumed>) = 4 [pid 305] close(3 [pid 972] close(3 [pid 305] <... close resumed>) = 0 [pid 972] <... close resumed>) = 0 [pid 305] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 972] memfd_create("syzkaller", 0) = 3 [pid 305] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 975 [pid 972] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f7bfe3d8000 [pid 972] 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 969] <... close resumed>) = 0 [pid 949] exit_group(0./strace-static-x86_64: Process 973 attached [pid 973] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 973] setpgid(0, 0) = 0 [pid 973] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 972] <... write resumed>) = 262144 [pid 972] munmap(0x7f7bfe3d8000, 262144 [pid 973] write(3, "1000", 4 [pid 972] <... munmap resumed>) = 0 [ 27.625769][ T324] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 27.634113][ T324] RBP: 1ffff1103ccdc93b R08: ffffffff81a2c3f9 R09: ffffed103ccdc93c [ 27.642445][ T324] R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 [ 27.653143][ T324] R13: ffff8881e66e49d8 R14: dffffc0000000000 R15: 0000000000003800 [ 27.661485][ T324] FS: 0000000000000000(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 27.670929][ T324] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [pid 973] <... write resumed>) = 4 [pid 973] close(3) = 0 [pid 972] openat(AT_FDCWD, "/dev/loop4", O_RDWR./strace-static-x86_64: Process 975 attached [pid 973] memfd_create("syzkaller", 0 [pid 972] <... openat resumed>) = 4 [pid 975] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 973] <... memfd_create resumed>) = 3 [pid 972] ioctl(4, LOOP_SET_FD, 3 [pid 975] <... prctl resumed>) = 0 [pid 973] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 972] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 975] setpgid(0, 0 [pid 973] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 972] ioctl(4, LOOP_CLR_FD [pid 975] <... setpgid resumed>) = 0 [pid 972] <... ioctl resumed>) = 0 [pid 975] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 969] memfd_create("syzkaller", 0 [pid 949] <... exit_group resumed>) = ? [pid 975] write(3, "1000", 4 [pid 973] 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 969] <... memfd_create resumed>) = 3 ./strace-static-x86_64: Process 974 attached [pid 975] <... write resumed>) = 4 [pid 972] ioctl(4, LOOP_SET_FD, 3 [pid 969] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 949] +++ exited with 0 +++ [pid 975] close(3 [pid 972] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 975] <... close resumed>) = 0 [pid 972] close(4 [pid 975] memfd_create("syzkaller", 0 [pid 972] <... close resumed>) = 0 [pid 975] <... memfd_create resumed>) = 3 [pid 972] close(3 [pid 975] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 973] <... write resumed>) = 262144 [pid 972] <... close resumed>) = 0 [pid 975] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 972] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 975] 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 972] <... openat resumed>) = 3 [pid 975] <... write resumed>) = 262144 [pid 972] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 973] munmap(0x7f7bfe3d8000, 262144 [pid 972] exit_group(0 [pid 974] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 973] <... munmap resumed>) = 0 [pid 972] <... exit_group resumed>) = ? [pid 969] <... mmap resumed>) = 0x7f7bfe3d8000 [pid 973] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 972] +++ exited with 0 +++ [pid 973] <... openat resumed>) = 4 [pid 309] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=972, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 973] ioctl(4, LOOP_SET_FD, 3 [pid 975] munmap(0x7f7bfe3d8000, 262144 [pid 973] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 975] <... munmap resumed>) = 0 [pid 973] ioctl(4, LOOP_CLR_FD [pid 309] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 973] <... ioctl resumed>) = 0 [pid 309] <... openat resumed>) = 3 [pid 309] ioctl(3, LOOP_CLR_FD [pid 975] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 309] <... ioctl resumed>) = 0 [pid 975] <... openat resumed>) = 4 [pid 309] close(3 [pid 975] ioctl(4, LOOP_SET_FD, 3 [pid 309] <... close resumed>) = 0 [pid 975] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 309] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 975] ioctl(4, LOOP_CLR_FD) = 0 [pid 309] <... clone resumed>, child_tidptr=0x5555561ed5d0) = 976 [pid 973] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 973] close(4) = 0 [pid 973] close(3) = 0 [pid 975] ioctl(4, LOOP_SET_FD, 3 [pid 973] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 975] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 973] <... openat resumed>) = 3 [pid 975] close(4 [pid 974] <... prctl resumed>) = 0 [pid 973] ioctl(3, BLKSECDISCARD, [0, 0] [pid 306] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=949, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 975] <... close resumed>) = 0 [pid 973] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 975] close(3 [pid 973] exit_group(0 [pid 975] <... close resumed>) = 0 [pid 974] setpgid(0, 0 [pid 973] <... exit_group resumed>) = ? [pid 969] 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 975] openat(AT_FDCWD, "/dev/loop5", O_RDWR|O_CREAT|O_CLOEXEC, 000 [pid 973] +++ exited with 0 +++ [pid 975] <... openat resumed>) = 3 [pid 975] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 975] exit_group(0) = ? [pid 975] +++ exited with 0 +++ [pid 305] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=975, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 976 attached [pid 976] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 305] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 976] setpgid(0, 0 [pid 305] <... openat resumed>) = 3 [pid 976] <... setpgid resumed>) = 0 [pid 305] ioctl(3, LOOP_CLR_FD [pid 976] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 305] <... ioctl resumed>) = 0 [ 27.677648][ T324] CR2: 00007ffcec87dd68 CR3: 00000001edc77000 CR4: 00000000003406f0 [ 27.687145][ T324] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.695512][ T324] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.704901][ T324] Kernel panic - not syncing: Fatal exception [ 27.711720][ T324] Kernel Offset: disabled [ 27.716422][ T324] Rebooting in 86400 seconds..