./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3324302322 <...> Warning: Permanently added '10.128.0.8' (ED25519) to the list of known hosts. execve("./syz-executor3324302322", ["./syz-executor3324302322"], 0x7ffe531bf510 /* 10 vars */) = 0 brk(NULL) = 0x5555574d4000 brk(0x5555574d4d00) = 0x5555574d4d00 arch_prctl(ARCH_SET_FS, 0x5555574d4380) = 0 set_tid_address(0x5555574d4650) = 355 set_robust_list(0x5555574d4660, 24) = 0 rseq(0x5555574d4ca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3324302322", 4096) = 28 getrandom("\x5b\xa0\x0b\xe8\xa0\x23\xf5\x15", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555574d4d00 brk(0x5555574f5d00) = 0x5555574f5d00 brk(0x5555574f6000) = 0x5555574f6000 mprotect(0x7f1bc9d56000, 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=0x5555574d4650) = 356 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555574d4650) = 357 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555574d4650) = 358 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555574d4650) = 359 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555574d4650) = 360 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555574d4650) = 361 ./strace-static-x86_64: Process 361 attached ./strace-static-x86_64: Process 359 attached [pid 361] set_robust_list(0x5555574d4660, 24 [pid 359] set_robust_list(0x5555574d4660, 24 [pid 361] <... set_robust_list resumed>) = 0 [pid 359] <... set_robust_list resumed>) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 361] <... openat resumed>) = 3 [pid 361] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 361] close(3) = 0 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 359] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 359] close(3) = 0 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 357 attached [pid 357] set_robust_list(0x5555574d4660, 24) = 0 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 362 [pid 357] <... openat resumed>) = 3 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 363 [pid 357] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 357] close(3) = 0 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555574d4650) = 364 ./strace-static-x86_64: Process 362 attached [pid 362] set_robust_list(0x5555574d4660, 24) = 0 [pid 362] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 362] setpgid(0, 0) = 0 [pid 362] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 ./strace-static-x86_64: Process 360 attached [pid 362] write(3, "1000", 4) = 4 [pid 362] close(3) = 0 [pid 362] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 362] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 362] memfd_create("syzkaller", 0) = 4 [pid 362] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 ./strace-static-x86_64: Process 363 attached ./strace-static-x86_64: Process 358 attached ./strace-static-x86_64: Process 356 attached [pid 360] set_robust_list(0x5555574d4660, 24 [pid 363] set_robust_list(0x5555574d4660, 24 [pid 360] <... set_robust_list resumed>) = 0 [pid 358] set_robust_list(0x5555574d4660, 24 [pid 356] set_robust_list(0x5555574d4660, 24 [pid 363] <... set_robust_list resumed>) = 0 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 358] <... set_robust_list resumed>) = 0 [pid 360] <... openat resumed>) = 3 [pid 363] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 360] ioctl(3, LOOP_CLR_FD [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 356] <... set_robust_list resumed>) = 0 [pid 363] <... prctl resumed>) = 0 [pid 360] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 358] <... openat resumed>) = 3 [pid 363] setpgid(0, 0 [pid 360] close(3 [pid 358] ioctl(3, LOOP_CLR_FD [pid 363] <... setpgid resumed>) = 0 [pid 360] <... close resumed>) = 0 [pid 358] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 363] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] close(3 [pid 356] <... openat resumed>) = 3 [pid 358] <... close resumed>) = 0 [pid 363] <... openat resumed>) = 3 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 365 [pid 363] write(3, "1000", 4 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] ioctl(3, LOOP_CLR_FD [pid 363] <... write resumed>) = 4 [pid 363] close(3 [pid 356] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 363] <... close resumed>) = 0 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 366 [pid 363] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 356] close(3 [pid 363] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 356] <... close resumed>) = 0 [pid 363] memfd_create("syzkaller", 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 363] <... memfd_create resumed>) = 4 [pid 363] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 367 ./strace-static-x86_64: Process 364 attached [pid 363] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 364] set_robust_list(0x5555574d4660, 24) = 0 [pid 363] <... write resumed>) = 262144 [pid 363] munmap(0x7f1bc18a3000, 138412032) = 0 [pid 363] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 5 [pid 363] ioctl(5, LOOP_SET_FD, 4 [pid 364] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 364] setpgid(0, 0) = 0 [ 23.906678][ T23] audit: type=1400 audit(1698996893.900:66): avc: denied { execmem } for pid=355 comm="syz-executor332" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [pid 364] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 364] write(3, "1000", 4) = 4 [pid 364] close(3) = 0 [pid 364] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT./strace-static-x86_64: Process 365 attached [pid 365] set_robust_list(0x5555574d4660, 24) = 0 [pid 365] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 362] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 365] <... prctl resumed>) = 0 [pid 365] setpgid(0, 0 [pid 362] <... write resumed>) = 262144 ./strace-static-x86_64: Process 366 attached [pid 365] <... setpgid resumed>) = 0 [pid 366] set_robust_list(0x5555574d4660, 24 [pid 365] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 366] <... set_robust_list resumed>) = 0 [pid 365] <... openat resumed>) = 3 [pid 366] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 365] write(3, "1000", 4 [pid 366] <... prctl resumed>) = 0 [pid 365] <... write resumed>) = 4 [pid 366] setpgid(0, 0 [pid 365] close(3 [pid 366] <... setpgid resumed>) = 0 [pid 365] <... close resumed>) = 0 [pid 366] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 365] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT./strace-static-x86_64: Process 367 attached [pid 367] set_robust_list(0x5555574d4660, 24 [pid 366] <... openat resumed>) = 3 [pid 362] munmap(0x7f1bc18a3000, 138412032 [pid 367] <... set_robust_list resumed>) = 0 [pid 366] write(3, "1000", 4 [pid 367] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 366] <... write resumed>) = 4 [pid 362] <... munmap resumed>) = 0 [pid 367] <... prctl resumed>) = 0 [pid 366] close(3 [pid 362] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 367] setpgid(0, 0 [pid 366] <... close resumed>) = 0 [pid 367] <... setpgid resumed>) = 0 [pid 366] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 367] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 367] write(3, "1000", 4) = 4 [pid 367] close(3) = 0 [pid 367] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 366] <... openat resumed>) = 3 [pid 365] <... openat resumed>) = 3 [pid 364] <... openat resumed>) = 3 [pid 363] <... ioctl resumed>) = 0 [pid 362] <... openat resumed>) = 5 [pid 367] ioctl(3, BLKSECDISCARD, [0, 0] [pid 366] ioctl(3, BLKSECDISCARD, [0, 0] [pid 365] ioctl(3, BLKSECDISCARD, [0, 0] [pid 364] ioctl(3, BLKSECDISCARD, [0, 0] [pid 363] close(4 [pid 362] ioctl(5, LOOP_SET_FD, 4 [pid 367] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 366] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 365] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 364] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 363] <... close resumed>) = 0 [pid 367] memfd_create("syzkaller", 0 [pid 366] memfd_create("syzkaller", 0 [pid 365] memfd_create("syzkaller", 0 [pid 364] memfd_create("syzkaller", 0 [pid 363] mkdir("./file1", 0777 [pid 367] <... memfd_create resumed>) = 4 [pid 366] <... memfd_create resumed>) = 4 [pid 365] <... memfd_create resumed>) = 4 [pid 364] <... memfd_create resumed>) = 4 [pid 363] <... mkdir resumed>) = 0 [pid 367] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 366] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 365] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 364] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 363] mount("/dev/loop3", "./file1", "ext4", MS_NOSUID|MS_NOSYMFOLLOW|MS_REC|MS_RELATIME, "nolazytime,resuid=0x000000000000ee00,inode_readahead_blks=0x0000000000000002,acl,commit=0x0000000000"... [pid 367] <... mmap resumed>) = 0x7f1bc18a3000 [pid 366] <... mmap resumed>) = 0x7f1bc18a3000 [pid 365] <... mmap resumed>) = 0x7f1bc18a3000 [pid 364] <... mmap resumed>) = 0x7f1bc18a3000 [pid 367] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 366] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 365] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [ 23.951017][ T23] audit: type=1400 audit(1698996893.910:67): avc: denied { read write } for pid=359 comm="syz-executor332" name="loop3" dev="devtmpfs" ino=9441 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 364] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 367] <... write resumed>) = 262144 [pid 366] <... write resumed>) = 262144 [pid 365] <... write resumed>) = 262144 [pid 364] <... write resumed>) = 262144 [pid 367] munmap(0x7f1bc18a3000, 138412032 [pid 366] munmap(0x7f1bc18a3000, 138412032 [pid 365] munmap(0x7f1bc18a3000, 138412032 [pid 364] munmap(0x7f1bc18a3000, 138412032 [pid 367] <... munmap resumed>) = 0 [pid 366] <... munmap resumed>) = 0 [pid 365] <... munmap resumed>) = 0 [pid 364] <... munmap resumed>) = 0 [pid 367] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 366] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 365] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 364] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 367] <... openat resumed>) = 5 [pid 366] <... openat resumed>) = 5 [pid 365] <... openat resumed>) = 5 [pid 364] <... openat resumed>) = 5 [pid 362] <... ioctl resumed>) = 0 [pid 367] ioctl(5, LOOP_SET_FD, 4 [pid 366] ioctl(5, LOOP_SET_FD, 4 [pid 365] ioctl(5, LOOP_SET_FD, 4 [pid 364] ioctl(5, LOOP_SET_FD, 4 [pid 362] close(4) = 0 [pid 362] mkdir("./file1", 0777) = -1 EEXIST (File exists) [pid 362] mount("/dev/loop5", "./file1", "ext4", MS_NOSUID|MS_NOSYMFOLLOW|MS_REC|MS_RELATIME, "nolazytime,resuid=0x000000000000ee00,inode_readahead_blks=0x0000000000000002,acl,commit=0x0000000000"... [pid 366] <... ioctl resumed>) = 0 [pid 366] close(4) = 0 [pid 366] mkdir("./file1", 0777) = -1 EEXIST (File exists) [ 23.977418][ T23] audit: type=1400 audit(1698996893.910:68): avc: denied { open } for pid=359 comm="syz-executor332" path="/dev/loop3" dev="devtmpfs" ino=9441 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 24.003505][ T23] audit: type=1400 audit(1698996893.910:69): avc: denied { ioctl } for pid=361 comm="syz-executor332" path="/dev/loop5" dev="devtmpfs" ino=9523 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 24.004771][ T363] EXT4-fs (loop3): Quota format mount options ignored when QUOTA feature is enabled [pid 366] mount("/dev/loop2", "./file1", "ext4", MS_NOSUID|MS_NOSYMFOLLOW|MS_REC|MS_RELATIME, "nolazytime,resuid=0x000000000000ee00,inode_readahead_blks=0x0000000000000002,acl,commit=0x0000000000"... [pid 367] <... ioctl resumed>) = 0 [pid 365] <... ioctl resumed>) = 0 [pid 367] close(4) = 0 [pid 365] close(4 [pid 367] mkdir("./file1", 0777 [pid 365] <... close resumed>) = 0 [pid 367] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 365] mkdir("./file1", 0777 [pid 367] mount("/dev/loop0", "./file1", "ext4", MS_NOSUID|MS_NOSYMFOLLOW|MS_REC|MS_RELATIME, "nolazytime,resuid=0x000000000000ee00,inode_readahead_blks=0x0000000000000002,acl,commit=0x0000000000"... [pid 365] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 365] mount("/dev/loop4", "./file1", "ext4", MS_NOSUID|MS_NOSYMFOLLOW|MS_REC|MS_RELATIME, "nolazytime,resuid=0x000000000000ee00,inode_readahead_blks=0x0000000000000002,acl,commit=0x0000000000"... [pid 364] <... ioctl resumed>) = 0 [ 24.029744][ T23] audit: type=1400 audit(1698996893.980:70): avc: denied { mounton } for pid=363 comm="syz-executor332" path="/root/file1" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 24.051570][ T363] EXT4-fs (loop3): feature flags set on rev 0 fs, running e2fsck is recommended [ 24.072627][ T366] EXT4-fs (loop2): Quota format mount options ignored when QUOTA feature is enabled [ 24.073922][ T367] EXT4-fs (loop0): Quota format mount options ignored when QUOTA feature is enabled [ 24.081850][ T366] EXT4-fs (loop2): feature flags set on rev 0 fs, running e2fsck is recommended [pid 364] close(4) = 0 [pid 364] mkdir("./file1", 0777) = -1 EEXIST (File exists) [ 24.098215][ T365] EXT4-fs (loop4): Quota format mount options ignored when QUOTA feature is enabled [ 24.106391][ T362] EXT4-fs (loop5): Quota format mount options ignored when QUOTA feature is enabled [ 24.109929][ T364] EXT4-fs (loop1): Quota format mount options ignored when QUOTA feature is enabled [ 24.128372][ T365] EXT4-fs (loop4): feature flags set on rev 0 fs, running e2fsck is recommended [ 24.140474][ T362] EXT4-fs (loop5): feature flags set on rev 0 fs, running e2fsck is recommended [ 24.153485][ T365] Quota error (device loop4): dq_insert_tree: Quota tree root isn't allocated! [ 24.166492][ T363] Quota error (device loop3): dq_insert_tree: Quota tree root isn't allocated! [ 24.177283][ T366] Quota error (device loop2): dq_insert_tree: Quota tree root isn't allocated! [ 24.183265][ T367] EXT4-fs (loop0): feature flags set on rev 0 fs, running e2fsck is recommended [ 24.187385][ T365] Quota error (device loop4): qtree_write_dquot: Error -5 occurred while creating quota [ 24.205355][ T364] EXT4-fs (loop1): feature flags set on rev 0 fs, running e2fsck is recommended [ 24.205794][ T363] Quota error (device loop3): qtree_write_dquot: Error -5 occurred while creating quota [ 24.225385][ T366] EXT4-fs (loop2): 1 orphan inode deleted [ 24.231577][ T366] EXT4-fs (loop2): mounted filesystem without journal. Opts: nolazytime,resuid=0x000000000000ee00,inode_readahead_blks=0x0000000000000002,acl,commit=0x0000000000000005,jqfmt=vfsold,nodiscard,errors=continue,usrquota,,errors=continue [ 24.257526][ T362] EXT4-fs (loop5): 1 orphan inode deleted [ 24.264034][ T365] EXT4-fs (loop4): 1 orphan inode deleted [ 24.270246][ T362] EXT4-fs (loop5): mounted filesystem without journal. Opts: nolazytime,resuid=0x000000000000ee00,inode_readahead_blks=0x0000000000000002,acl,commit=0x0000000000000005,jqfmt=vfsold,nodiscard,errors=continue,usrquota,,errors=continue [ 24.293457][ T363] EXT4-fs (loop3): 1 orphan inode deleted [pid 364] mount("/dev/loop1", "./file1", "ext4", MS_NOSUID|MS_NOSYMFOLLOW|MS_REC|MS_RELATIME, "nolazytime,resuid=0x000000000000ee00,inode_readahead_blks=0x0000000000000002,acl,commit=0x0000000000"... [pid 366] <... mount resumed>) = 0 [pid 365] <... mount resumed>) = 0 [pid 363] <... mount resumed>) = 0 [pid 362] <... mount resumed>) = 0 [pid 366] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 362] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 366] <... openat resumed>) = 4 [pid 362] <... openat resumed>) = 4 [pid 366] chdir("./file1" [pid 362] chdir("./file1" [pid 366] <... chdir resumed>) = 0 [pid 362] <... chdir resumed>) = 0 [pid 366] ioctl(5, LOOP_CLR_FD [pid 362] ioctl(5, LOOP_CLR_FD [pid 366] <... ioctl resumed>) = 0 [pid 362] <... ioctl resumed>) = 0 [pid 366] close(5 [pid 362] close(5 [pid 366] <... close resumed>) = 0 [pid 365] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 362] <... close resumed>) = 0 [pid 366] exit_group(0 [pid 362] exit_group(0 [pid 366] <... exit_group resumed>) = ? [pid 362] <... exit_group resumed>) = ? [pid 366] +++ exited with 0 +++ [pid 362] +++ exited with 0 +++ [ 24.300294][ T365] EXT4-fs (loop4): mounted filesystem without journal. Opts: nolazytime,resuid=0x000000000000ee00,inode_readahead_blks=0x0000000000000002,acl,commit=0x0000000000000005,jqfmt=vfsold,nodiscard,errors=continue,usrquota,,errors=continue [ 24.300889][ T363] EXT4-fs (loop3): mounted filesystem without journal. Opts: nolazytime,resuid=0x000000000000ee00,inode_readahead_blks=0x0000000000000002,acl,commit=0x0000000000000005,jqfmt=vfsold,nodiscard,errors=continue,usrquota,,errors=continue [ 24.325026][ T367] EXT4-fs (loop0): 1 orphan inode deleted [pid 365] <... openat resumed>) = 4 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=362, si_uid=0, si_status=0, si_utime=0, si_stime=5} --- [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=366, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- [pid 365] chdir("./file1" [pid 367] <... mount resumed>) = 0 [pid 365] <... chdir resumed>) = 0 [pid 363] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 365] ioctl(5, LOOP_CLR_FD [pid 361] <... openat resumed>) = 3 [pid 365] <... ioctl resumed>) = 0 [pid 358] <... openat resumed>) = 3 [pid 361] ioctl(3, LOOP_CLR_FD [pid 365] close(5 [pid 358] ioctl(3, LOOP_CLR_FD [pid 361] <... ioctl resumed>) = 0 [pid 365] <... close resumed>) = 0 [pid 358] <... ioctl resumed>) = 0 [pid 361] close(3 [pid 365] exit_group(0 [pid 361] <... close resumed>) = 0 [pid 358] close(3 [pid 365] <... exit_group resumed>) = ? [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] <... close resumed>) = 0 [pid 367] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 365] +++ exited with 0 +++ [pid 363] <... openat resumed>) = 4 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 367] <... openat resumed>) = 4 [pid 363] chdir("./file1" [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 391 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=365, si_uid=0, si_status=0, si_utime=0, si_stime=6} --- ./strace-static-x86_64: Process 391 attached [pid 363] <... chdir resumed>) = 0 [pid 367] chdir("./file1" [pid 363] ioctl(5, LOOP_CLR_FD [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 392 [pid 367] <... chdir resumed>) = 0 [pid 363] <... ioctl resumed>) = 0 [pid 367] ioctl(5, LOOP_CLR_FD) = 0 [pid 363] close(5 [pid 367] close(5 [pid 363] <... close resumed>) = 0 [pid 367] <... close resumed>) = 0 [pid 367] exit_group(0 [pid 363] exit_group(0 [pid 367] <... exit_group resumed>) = ? [pid 363] <... exit_group resumed>) = ? [pid 391] set_robust_list(0x5555574d4660, 24 [pid 367] +++ exited with 0 +++ [pid 391] <... set_robust_list resumed>) = 0 [pid 363] +++ exited with 0 +++ [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=367, si_uid=0, si_status=0, si_utime=0, si_stime=3} --- [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=363, si_uid=0, si_status=0, si_utime=0, si_stime=8} --- [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 360] <... openat resumed>) = 3 [pid 360] ioctl(3, LOOP_CLR_FD [pid 359] <... openat resumed>) = 3 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 360] <... ioctl resumed>) = 0 [pid 359] ioctl(3, LOOP_CLR_FD [pid 360] close(3 [pid 356] <... openat resumed>) = 3 [pid 359] <... ioctl resumed>) = 0 [pid 360] <... close resumed>) = 0 [pid 356] ioctl(3, LOOP_CLR_FD [pid 359] close(3 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] <... ioctl resumed>) = 0 [pid 359] <... close resumed>) = 0 [pid 391] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 356] close(3 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 393 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] <... close resumed>) = 0 [pid 391] <... prctl resumed>) = 0 [pid 391] setpgid(0, 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 394 [pid 391] <... setpgid resumed>) = 0 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 395 [pid 391] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 391] write(3, "1000", 4) = 4 [pid 391] close(3) = 0 [pid 391] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 391] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 391] memfd_create("syzkaller", 0) = 4 [pid 391] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 391] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 392 attached [pid 392] set_robust_list(0x5555574d4660, 24./strace-static-x86_64: Process 395 attached [pid 395] set_robust_list(0x5555574d4660, 24) = 0 [pid 395] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 392] <... set_robust_list resumed>) = 0 [pid 392] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 395] <... prctl resumed>) = 0 [pid 395] setpgid(0, 0./strace-static-x86_64: Process 394 attached ) = 0 [pid 392] <... prctl resumed>) = 0 [pid 395] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 394] set_robust_list(0x5555574d4660, 24 [pid 392] setpgid(0, 0 [pid 395] <... openat resumed>) = 3 [pid 394] <... set_robust_list resumed>) = 0 [pid 392] <... setpgid resumed>) = 0 [pid 395] write(3, "1000", 4) = 4 [pid 395] close(3) = 0 ./strace-static-x86_64: Process 393 attached [ 24.350705][ T367] EXT4-fs (loop0): mounted filesystem without journal. Opts: nolazytime,resuid=0x000000000000ee00,inode_readahead_blks=0x0000000000000002,acl,commit=0x0000000000000005,jqfmt=vfsold,nodiscard,errors=continue,usrquota,,errors=continue [pid 395] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 394] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 392] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 391] <... write resumed>) = 262144 [pid 395] <... openat resumed>) = 3 [pid 391] munmap(0x7f1bc18a3000, 138412032 [pid 395] ioctl(3, BLKSECDISCARD, [0, 0] [pid 391] <... munmap resumed>) = 0 [pid 395] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 391] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 395] memfd_create("syzkaller", 0 [pid 391] <... openat resumed>) = 5 [pid 395] <... memfd_create resumed>) = 4 [pid 395] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 394] <... prctl resumed>) = 0 [pid 393] set_robust_list(0x5555574d4660, 24 [pid 392] <... openat resumed>) = 3 [pid 364] <... mount resumed>) = 0 [pid 395] <... mmap resumed>) = 0x7f1bc18a3000 [pid 394] setpgid(0, 0 [pid 393] <... set_robust_list resumed>) = 0 [pid 392] write(3, "1000", 4 [pid 391] ioctl(5, LOOP_SET_FD, 4 [pid 394] <... setpgid resumed>) = 0 [pid 393] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 392] <... write resumed>) = 4 [pid 364] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY [pid 395] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 394] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 393] <... prctl resumed>) = 0 [pid 392] close(3 [pid 391] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 395] <... write resumed>) = 262144 [pid 394] <... openat resumed>) = 3 [pid 393] setpgid(0, 0 [pid 392] <... close resumed>) = 0 [pid 391] ioctl(5, LOOP_CLR_FD [pid 364] <... openat resumed>) = 4 [pid 395] munmap(0x7f1bc18a3000, 138412032 [pid 394] write(3, "1000", 4 [pid 393] <... setpgid resumed>) = 0 [pid 392] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 391] <... ioctl resumed>) = 0 [pid 395] <... munmap resumed>) = 0 [pid 394] <... write resumed>) = 4 [pid 393] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 392] <... openat resumed>) = 3 [pid 364] chdir("./file1" [pid 395] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 394] close(3 [pid 393] <... openat resumed>) = 3 [pid 392] ioctl(3, BLKSECDISCARD, [0, 0] [pid 364] <... chdir resumed>) = 0 [pid 395] <... openat resumed>) = 5 [pid 394] <... close resumed>) = 0 [pid 393] write(3, "1000", 4 [pid 392] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 364] ioctl(5, LOOP_CLR_FD [pid 395] ioctl(5, LOOP_SET_FD, 4 [pid 394] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 393] <... write resumed>) = 4 [pid 392] memfd_create("syzkaller", 0 [pid 391] ioctl(5, LOOP_SET_FD, 4 [pid 364] <... ioctl resumed>) = 0 [pid 395] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 394] <... openat resumed>) = 3 [pid 393] close(3 [pid 392] <... memfd_create resumed>) = 4 [pid 391] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 364] close(5 [pid 395] ioctl(5, LOOP_CLR_FD [pid 394] ioctl(3, BLKSECDISCARD, [0, 0] [pid 393] <... close resumed>) = 0 [pid 392] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 391] close(5 [pid 364] <... close resumed>) = 0 [pid 394] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 393] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 392] <... mmap resumed>) = 0x7f1bc18a3000 [pid 364] exit_group(0 [pid 394] memfd_create("syzkaller", 0 [pid 393] <... openat resumed>) = 3 [pid 392] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 364] <... exit_group resumed>) = ? [pid 395] <... ioctl resumed>) = 0 [pid 394] <... memfd_create resumed>) = 4 [pid 393] ioctl(3, BLKSECDISCARD, [0, 0] [pid 392] <... write resumed>) = 262144 [pid 391] <... close resumed>) = 0 [pid 364] +++ exited with 0 +++ [pid 394] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 393] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 392] munmap(0x7f1bc18a3000, 138412032 [pid 391] close(4 [pid 394] <... mmap resumed>) = 0x7f1bc18a3000 [pid 393] memfd_create("syzkaller", 0 [pid 392] <... munmap resumed>) = 0 [pid 394] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 393] <... memfd_create resumed>) = 4 [pid 392] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 391] <... close resumed>) = 0 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=364, si_uid=0, si_status=0, si_utime=0, si_stime=7} --- [pid 395] ioctl(5, LOOP_SET_FD, 4 [pid 394] <... write resumed>) = 262144 [pid 393] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 392] <... openat resumed>) = 5 [pid 391] exit_group(0 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 395] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 394] munmap(0x7f1bc18a3000, 138412032 [pid 393] <... mmap resumed>) = 0x7f1bc18a3000 [pid 392] ioctl(5, LOOP_SET_FD, 4 [pid 391] <... exit_group resumed>) = ? [pid 395] close(5 [pid 394] <... munmap resumed>) = 0 [pid 393] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 392] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 357] <... openat resumed>) = 3 [pid 395] <... close resumed>) = 0 [pid 394] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 393] <... write resumed>) = 262144 [pid 392] ioctl(5, LOOP_CLR_FD [pid 391] +++ exited with 0 +++ [pid 357] ioctl(3, LOOP_CLR_FD [pid 395] close(4 [pid 394] <... openat resumed>) = 5 [pid 393] munmap(0x7f1bc18a3000, 138412032 [pid 392] <... ioctl resumed>) = 0 [pid 357] <... ioctl resumed>) = 0 [pid 395] <... close resumed>) = 0 [pid 394] ioctl(5, LOOP_SET_FD, 4 [pid 393] <... munmap resumed>) = 0 [pid 357] close(3 [pid 395] exit_group(0 [pid 394] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 393] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=391, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] <... close resumed>) = 0 [pid 395] <... exit_group resumed>) = ? [pid 394] ioctl(5, LOOP_CLR_FD [pid 393] <... openat resumed>) = 5 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 394] <... ioctl resumed>) = 0 [pid 393] ioctl(5, LOOP_SET_FD, 4 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 393] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 392] ioctl(5, LOOP_SET_FD, 4 [pid 395] +++ exited with 0 +++ [pid 393] ioctl(5, LOOP_CLR_FD [pid 392] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 393] <... ioctl resumed>) = 0 [pid 392] close(5) = 0 [pid 361] <... openat resumed>) = 3 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 397 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=395, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 394] ioctl(5, LOOP_SET_FD, 4 [pid 392] close(4 [pid 361] ioctl(3, LOOP_CLR_FD [pid 394] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 392] <... close resumed>) = 0 [pid 361] <... ioctl resumed>) = 0 [pid 394] close(5 [pid 393] ioctl(5, LOOP_SET_FD, 4 [pid 392] exit_group(0 [pid 361] close(3 [pid 394] <... close resumed>) = 0 [pid 393] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 392] <... exit_group resumed>) = ? [pid 361] <... close resumed>) = 0 [pid 394] close(4 [pid 393] close(5 [pid 392] +++ exited with 0 +++ [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=392, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 394] <... close resumed>) = 0 [pid 393] <... close resumed>) = 0 [ 24.406428][ T364] EXT4-fs (loop1): 1 orphan inode deleted [ 24.411992][ T364] EXT4-fs (loop1): mounted filesystem without journal. Opts: nolazytime,resuid=0x000000000000ee00,inode_readahead_blks=0x0000000000000002,acl,commit=0x0000000000000005,jqfmt=vfsold,nodiscard,errors=continue,usrquota,,errors=continue [pid 394] exit_group(0 [pid 393] close(4 [pid 356] <... openat resumed>) = 3 [pid 394] <... exit_group resumed>) = ? [pid 393] <... close resumed>) = 0 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 398 [pid 394] +++ exited with 0 +++ [pid 393] exit_group(0 [pid 356] ioctl(3, LOOP_CLR_FD [pid 393] <... exit_group resumed>) = ? [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 356] <... ioctl resumed>) = 0 [pid 393] +++ exited with 0 +++ [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=394, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] <... openat resumed>) = 3 [pid 356] close(3 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=393, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 358] ioctl(3, LOOP_CLR_FD [pid 359] <... restart_syscall resumed>) = 0 [pid 356] <... close resumed>) = 0 [pid 358] <... ioctl resumed>) = 0 [pid 358] close(3 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] <... close resumed>) = 0 [pid 360] <... openat resumed>) = 3 ./strace-static-x86_64: Process 397 attached [pid 397] set_robust_list(0x5555574d4660, 24 [pid 360] ioctl(3, LOOP_CLR_FD [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 360] <... ioctl resumed>) = 0 [pid 359] <... openat resumed>) = 3 [pid 397] <... set_robust_list resumed>) = 0 [pid 397] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 360] close(3 [pid 359] ioctl(3, LOOP_CLR_FD [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 399 [pid 360] <... close resumed>) = 0 [pid 359] <... ioctl resumed>) = 0 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 400 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 359] close(3./strace-static-x86_64: Process 398 attached [pid 397] <... prctl resumed>) = 0 [pid 398] set_robust_list(0x5555574d4660, 24 [pid 397] setpgid(0, 0 [pid 359] <... close resumed>) = 0 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 401 [pid 398] <... set_robust_list resumed>) = 0 [pid 397] <... setpgid resumed>) = 0 [pid 398] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 397] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 398] <... prctl resumed>) = 0 [pid 397] <... openat resumed>) = 3 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 402 [pid 398] setpgid(0, 0 [pid 397] write(3, "1000", 4 [pid 398] <... setpgid resumed>) = 0 [pid 397] <... write resumed>) = 4 [pid 398] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 397] close(3./strace-static-x86_64: Process 400 attached [pid 398] <... openat resumed>) = 3 [pid 397] <... close resumed>) = 0 [pid 400] set_robust_list(0x5555574d4660, 24 [pid 398] write(3, "1000", 4 [pid 397] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT./strace-static-x86_64: Process 399 attached ./strace-static-x86_64: Process 401 attached [pid 400] <... set_robust_list resumed>) = 0 [pid 398] <... write resumed>) = 4 [pid 397] <... openat resumed>) = 3 [pid 400] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 398] close(3 [pid 397] ioctl(3, BLKSECDISCARD, [0, 0] [pid 399] set_robust_list(0x5555574d4660, 24 [pid 401] set_robust_list(0x5555574d4660, 24./strace-static-x86_64: Process 402 attached ) = 0 [pid 400] <... prctl resumed>) = 0 [pid 399] <... set_robust_list resumed>) = 0 [pid 398] <... close resumed>) = 0 [pid 397] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 402] set_robust_list(0x5555574d4660, 24 [pid 400] setpgid(0, 0 [pid 398] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 397] memfd_create("syzkaller", 0 [pid 402] <... set_robust_list resumed>) = 0 [pid 401] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 400] <... setpgid resumed>) = 0 [pid 399] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 398] <... openat resumed>) = 3 [pid 397] <... memfd_create resumed>) = 4 [pid 402] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 400] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 398] ioctl(3, BLKSECDISCARD, [0, 0] [pid 397] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 399] <... prctl resumed>) = 0 [pid 401] <... prctl resumed>) = 0 [pid 402] <... prctl resumed>) = 0 [pid 400] <... openat resumed>) = 3 [pid 398] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 397] <... mmap resumed>) = 0x7f1bc18a3000 [pid 399] setpgid(0, 0 [pid 401] setpgid(0, 0 [pid 402] setpgid(0, 0 [pid 401] <... setpgid resumed>) = 0 [pid 400] write(3, "1000", 4 [pid 399] <... setpgid resumed>) = 0 [pid 398] memfd_create("syzkaller", 0 [pid 397] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 402] <... setpgid resumed>) = 0 [pid 401] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 400] <... write resumed>) = 4 [pid 399] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 398] <... memfd_create resumed>) = 4 [pid 397] <... write resumed>) = 262144 [pid 402] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 401] <... openat resumed>) = 3 [pid 400] close(3 [pid 399] <... openat resumed>) = 3 [pid 398] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 402] <... openat resumed>) = 3 [pid 401] write(3, "1000", 4 [pid 400] <... close resumed>) = 0 [pid 399] write(3, "1000", 4 [pid 398] <... mmap resumed>) = 0x7f1bc18a3000 [pid 397] munmap(0x7f1bc18a3000, 138412032 [pid 402] write(3, "1000", 4 [pid 401] <... write resumed>) = 4 [pid 400] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 399] <... write resumed>) = 4 [pid 398] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 402] <... write resumed>) = 4 [pid 401] close(3 [pid 400] <... openat resumed>) = 3 [pid 399] close(3 [pid 398] <... write resumed>) = 262144 [pid 397] <... munmap resumed>) = 0 [pid 402] close(3 [pid 401] <... close resumed>) = 0 [pid 400] ioctl(3, BLKSECDISCARD, [0, 0] [pid 399] <... close resumed>) = 0 [pid 398] munmap(0x7f1bc18a3000, 138412032 [pid 397] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 402] <... close resumed>) = 0 [pid 401] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 400] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 399] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 398] <... munmap resumed>) = 0 [pid 397] <... openat resumed>) = 5 [pid 402] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 401] <... openat resumed>) = 3 [pid 400] memfd_create("syzkaller", 0 [pid 399] <... openat resumed>) = 3 [pid 398] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 397] ioctl(5, LOOP_SET_FD, 4 [pid 402] <... openat resumed>) = 3 [pid 401] ioctl(3, BLKSECDISCARD, [0, 0] [pid 400] <... memfd_create resumed>) = 4 [pid 399] ioctl(3, BLKSECDISCARD, [0, 0] [pid 398] <... openat resumed>) = 5 [pid 397] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 402] ioctl(3, BLKSECDISCARD, [0, 0] [pid 401] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 400] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 399] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 398] ioctl(5, LOOP_SET_FD, 4 [pid 397] ioctl(5, LOOP_CLR_FD [pid 402] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 401] memfd_create("syzkaller", 0 [pid 400] <... mmap resumed>) = 0x7f1bc18a3000 [pid 399] memfd_create("syzkaller", 0 [pid 398] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 397] <... ioctl resumed>) = 0 [pid 402] memfd_create("syzkaller", 0 [pid 401] <... memfd_create resumed>) = 4 [pid 400] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 399] <... memfd_create resumed>) = 4 [pid 398] ioctl(5, LOOP_CLR_FD [pid 402] <... memfd_create resumed>) = 4 [pid 401] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 400] <... write resumed>) = 262144 [pid 399] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 398] <... ioctl resumed>) = 0 [pid 402] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 401] <... mmap resumed>) = 0x7f1bc18a3000 [pid 400] munmap(0x7f1bc18a3000, 138412032 [pid 399] <... mmap resumed>) = 0x7f1bc18a3000 [pid 402] <... mmap resumed>) = 0x7f1bc18a3000 [pid 400] <... munmap resumed>) = 0 [pid 402] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 401] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 400] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 397] ioctl(5, LOOP_SET_FD, 4 [pid 402] <... write resumed>) = 262144 [pid 400] <... openat resumed>) = 5 [pid 399] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 398] ioctl(5, LOOP_SET_FD, 4 [pid 397] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 402] munmap(0x7f1bc18a3000, 138412032 [pid 400] ioctl(5, LOOP_SET_FD, 4 [pid 398] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 397] close(5 [pid 402] <... munmap resumed>) = 0 [pid 400] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 398] close(5 [pid 397] <... close resumed>) = 0 [pid 402] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 400] ioctl(5, LOOP_CLR_FD [pid 399] <... write resumed>) = 262144 [pid 398] <... close resumed>) = 0 [pid 397] close(4 [pid 402] <... openat resumed>) = 5 [pid 401] <... write resumed>) = 262144 [pid 400] <... ioctl resumed>) = 0 [pid 399] munmap(0x7f1bc18a3000, 138412032 [pid 398] close(4 [pid 397] <... close resumed>) = 0 [pid 402] ioctl(5, LOOP_SET_FD, 4 [pid 401] munmap(0x7f1bc18a3000, 138412032 [pid 399] <... munmap resumed>) = 0 [pid 398] <... close resumed>) = 0 [pid 397] exit_group(0 [pid 402] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 401] <... munmap resumed>) = 0 [pid 399] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 398] exit_group(0 [pid 397] <... exit_group resumed>) = ? [pid 402] ioctl(5, LOOP_CLR_FD [pid 401] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 399] <... openat resumed>) = 5 [pid 398] <... exit_group resumed>) = ? [pid 397] +++ exited with 0 +++ [pid 402] <... ioctl resumed>) = 0 [pid 401] <... openat resumed>) = 5 [pid 400] ioctl(5, LOOP_SET_FD, 4 [pid 399] ioctl(5, LOOP_SET_FD, 4 [pid 398] +++ exited with 0 +++ [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=397, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 401] ioctl(5, LOOP_SET_FD, 4 [pid 400] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 399] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=398, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 401] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 400] close(5 [pid 399] ioctl(5, LOOP_CLR_FD [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 401] ioctl(5, LOOP_CLR_FD [pid 400] <... close resumed>) = 0 [pid 399] <... ioctl resumed>) = 0 [pid 361] <... restart_syscall resumed>) = 0 [pid 401] <... ioctl resumed>) = 0 [pid 400] close(4 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 402] ioctl(5, LOOP_SET_FD, 4 [pid 400] <... close resumed>) = 0 [pid 402] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 400] exit_group(0 [pid 357] <... openat resumed>) = 3 [pid 402] close(5 [pid 400] <... exit_group resumed>) = ? [pid 402] <... close resumed>) = 0 [pid 400] +++ exited with 0 +++ [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 357] ioctl(3, LOOP_CLR_FD [pid 402] close(4 [pid 401] ioctl(5, LOOP_SET_FD, 4 [pid 399] ioctl(5, LOOP_SET_FD, 4 [pid 361] <... openat resumed>) = 3 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=400, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] <... ioctl resumed>) = 0 [pid 402] <... close resumed>) = 0 [pid 401] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 399] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] ioctl(3, LOOP_CLR_FD [pid 357] close(3 [pid 402] exit_group(0 [pid 401] close(5 [pid 399] close(5 [pid 361] <... ioctl resumed>) = 0 [pid 402] <... exit_group resumed>) = ? [pid 401] <... close resumed>) = 0 [pid 399] <... close resumed>) = 0 [pid 361] close(3 [pid 357] <... close resumed>) = 0 [pid 402] +++ exited with 0 +++ [pid 401] close(4 [pid 399] close(4 [pid 361] <... close resumed>) = 0 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 401] <... close resumed>) = 0 [pid 399] <... close resumed>) = 0 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 401] exit_group(0 [pid 399] exit_group(0./strace-static-x86_64: Process 403 attached [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=402, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 399] <... exit_group resumed>) = ? [pid 401] <... exit_group resumed>) = ? [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 403 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 404 [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 403] set_robust_list(0x5555574d4660, 24) = 0 [pid 403] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 399] +++ exited with 0 +++ [pid 359] <... restart_syscall resumed>) = 0 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 403] <... prctl resumed>) = 0 [pid 403] setpgid(0, 0 [pid 401] +++ exited with 0 +++ [pid 358] <... openat resumed>) = 3 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=401, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 358] ioctl(3, LOOP_CLR_FD [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=399, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] <... openat resumed>) = 3 [pid 358] <... ioctl resumed>) = 0 [pid 359] ioctl(3, LOOP_CLR_FD [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 359] <... ioctl resumed>) = 0 [pid 358] close(3 [pid 359] close(3 [pid 358] <... close resumed>) = 0 [pid 359] <... close resumed>) = 0 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 403] <... setpgid resumed>) = 0 [pid 403] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 360] <... restart_syscall resumed>) = 0 [pid 356] <... restart_syscall resumed>) = 0 [pid 403] <... openat resumed>) = 3 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 405 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 406 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 360] <... openat resumed>) = 3 [pid 356] <... openat resumed>) = 3 [pid 360] ioctl(3, LOOP_CLR_FD [pid 356] ioctl(3, LOOP_CLR_FD [pid 360] <... ioctl resumed>) = 0 [pid 356] <... ioctl resumed>) = 0 [pid 360] close(3 [pid 356] close(3 [pid 360] <... close resumed>) = 0 [pid 356] <... close resumed>) = 0 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 404 attached [pid 403] write(3, "1000", 4 [pid 404] set_robust_list(0x5555574d4660, 24 [pid 403] <... write resumed>) = 4 [pid 404] <... set_robust_list resumed>) = 0 [pid 403] close(3 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 407 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 408 [pid 404] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 403] <... close resumed>) = 0 [pid 404] <... prctl resumed>) = 0 [pid 403] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 404] setpgid(0, 0 [pid 403] <... openat resumed>) = 3 [pid 404] <... setpgid resumed>) = 0 [pid 403] ioctl(3, BLKSECDISCARD, [0, 0] [pid 404] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 403] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 404] <... openat resumed>) = 3 [pid 403] memfd_create("syzkaller", 0./strace-static-x86_64: Process 408 attached ./strace-static-x86_64: Process 406 attached ./strace-static-x86_64: Process 405 attached [pid 404] write(3, "1000", 4 [pid 403] <... memfd_create resumed>) = 4 [pid 404] <... write resumed>) = 4 [pid 403] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 404] close(3 [pid 403] <... mmap resumed>) = 0x7f1bc18a3000 [pid 408] set_robust_list(0x5555574d4660, 24 [pid 406] set_robust_list(0x5555574d4660, 24 [pid 405] set_robust_list(0x5555574d4660, 24 [pid 404] <... close resumed>) = 0 [pid 403] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 408] <... set_robust_list resumed>) = 0 [pid 406] <... set_robust_list resumed>) = 0 [pid 405] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 407 attached [pid 408] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 406] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 405] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 404] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 403] <... write resumed>) = 262144 [pid 408] <... prctl resumed>) = 0 [pid 407] set_robust_list(0x5555574d4660, 24 [pid 406] <... prctl resumed>) = 0 [pid 405] <... prctl resumed>) = 0 [pid 404] <... openat resumed>) = 3 [pid 408] setpgid(0, 0 [pid 407] <... set_robust_list resumed>) = 0 [pid 406] setpgid(0, 0 [pid 405] setpgid(0, 0 [pid 404] ioctl(3, BLKSECDISCARD, [0, 0] [pid 403] munmap(0x7f1bc18a3000, 138412032 [pid 408] <... setpgid resumed>) = 0 [pid 407] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 406] <... setpgid resumed>) = 0 [pid 405] <... setpgid resumed>) = 0 [pid 404] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 408] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 407] <... prctl resumed>) = 0 [pid 406] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 405] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 404] memfd_create("syzkaller", 0 [pid 403] <... munmap resumed>) = 0 [pid 408] <... openat resumed>) = 3 [pid 407] setpgid(0, 0 [pid 406] <... openat resumed>) = 3 [pid 405] <... openat resumed>) = 3 [pid 404] <... memfd_create resumed>) = 4 [pid 408] write(3, "1000", 4 [pid 407] <... setpgid resumed>) = 0 [pid 406] write(3, "1000", 4 [pid 405] write(3, "1000", 4 [pid 404] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 403] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 408] <... write resumed>) = 4 [pid 407] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 406] <... write resumed>) = 4 [pid 405] <... write resumed>) = 4 [pid 404] <... mmap resumed>) = 0x7f1bc18a3000 [pid 403] <... openat resumed>) = 5 [pid 408] close(3 [pid 407] <... openat resumed>) = 3 [pid 406] close(3 [pid 405] close(3 [pid 404] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 403] ioctl(5, LOOP_SET_FD, 4 [pid 408] <... close resumed>) = 0 [pid 407] write(3, "1000", 4 [pid 406] <... close resumed>) = 0 [pid 405] <... close resumed>) = 0 [pid 404] <... write resumed>) = 262144 [pid 403] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 408] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 407] <... write resumed>) = 4 [pid 406] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 405] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 404] munmap(0x7f1bc18a3000, 138412032 [pid 403] ioctl(5, LOOP_CLR_FD [pid 408] <... openat resumed>) = 3 [pid 407] close(3 [pid 406] <... openat resumed>) = 3 [pid 405] <... openat resumed>) = 3 [pid 404] <... munmap resumed>) = 0 [pid 403] <... ioctl resumed>) = 0 [pid 408] ioctl(3, BLKSECDISCARD, [0, 0] [pid 407] <... close resumed>) = 0 [pid 406] ioctl(3, BLKSECDISCARD, [0, 0] [pid 405] ioctl(3, BLKSECDISCARD, [0, 0] [pid 404] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 408] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 407] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 406] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 405] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 404] <... openat resumed>) = 5 [pid 408] memfd_create("syzkaller", 0 [pid 407] <... openat resumed>) = 3 [pid 404] ioctl(5, LOOP_SET_FD, 4 [pid 408] <... memfd_create resumed>) = 4 [pid 407] ioctl(3, BLKSECDISCARD, [0, 0] [pid 406] memfd_create("syzkaller", 0 [pid 405] memfd_create("syzkaller", 0 [pid 404] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 408] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 407] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 406] <... memfd_create resumed>) = 4 [pid 405] <... memfd_create resumed>) = 4 [pid 404] ioctl(5, LOOP_CLR_FD [pid 403] ioctl(5, LOOP_SET_FD, 4 [pid 408] <... mmap resumed>) = 0x7f1bc18a3000 [pid 407] memfd_create("syzkaller", 0 [pid 406] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 405] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 404] <... ioctl resumed>) = 0 [pid 403] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 407] <... memfd_create resumed>) = 4 [pid 403] close(5 [pid 407] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 403] <... close resumed>) = 0 [pid 408] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 407] <... mmap resumed>) = 0x7f1bc18a3000 [pid 406] <... mmap resumed>) = 0x7f1bc18a3000 [pid 405] <... mmap resumed>) = 0x7f1bc18a3000 [pid 403] close(4 [pid 408] <... write resumed>) = 262144 [pid 407] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 403] <... close resumed>) = 0 [pid 407] <... write resumed>) = 262144 [pid 406] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 404] ioctl(5, LOOP_SET_FD, 4 [pid 403] exit_group(0 [pid 407] munmap(0x7f1bc18a3000, 138412032 [pid 405] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 404] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 403] <... exit_group resumed>) = ? [pid 407] <... munmap resumed>) = 0 [pid 406] <... write resumed>) = 262144 [pid 404] close(5 [pid 403] +++ exited with 0 +++ [pid 408] munmap(0x7f1bc18a3000, 138412032 [pid 407] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 406] munmap(0x7f1bc18a3000, 138412032 [pid 405] <... write resumed>) = 262144 [pid 404] <... close resumed>) = 0 [pid 408] <... munmap resumed>) = 0 [pid 407] <... openat resumed>) = 5 [pid 404] close(4 [pid 357] --- 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 resumed>) = 0 [pid 405] munmap(0x7f1bc18a3000, 138412032 [pid 408] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 407] ioctl(5, LOOP_SET_FD, 4 [pid 406] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 404] <... close resumed>) = 0 [pid 408] <... openat resumed>) = 5 [pid 407] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 406] <... openat resumed>) = 5 [pid 405] <... munmap resumed>) = 0 [pid 404] exit_group(0 [pid 408] ioctl(5, LOOP_SET_FD, 4 [pid 407] ioctl(5, LOOP_CLR_FD [pid 406] ioctl(5, LOOP_SET_FD, 4 [pid 405] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 404] <... exit_group resumed>) = ? [pid 408] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 407] <... ioctl resumed>) = 0 [pid 406] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 405] <... openat resumed>) = 5 [pid 404] +++ exited with 0 +++ [pid 408] ioctl(5, LOOP_CLR_FD [pid 406] ioctl(5, LOOP_CLR_FD [pid 405] ioctl(5, LOOP_SET_FD, 4 [pid 408] <... ioctl resumed>) = 0 [pid 406] <... ioctl resumed>) = 0 [pid 405] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 405] ioctl(5, LOOP_CLR_FD [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=404, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 405] <... ioctl resumed>) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 361] ioctl(3, LOOP_CLR_FD) = 0 [pid 357] <... openat resumed>) = 3 [pid 407] ioctl(5, LOOP_SET_FD, 4 [pid 361] close(3 [pid 357] ioctl(3, LOOP_CLR_FD [pid 407] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 408] ioctl(5, LOOP_SET_FD, 4 [pid 407] close(5 [pid 406] ioctl(5, LOOP_SET_FD, 4 [pid 361] <... close resumed>) = 0 [pid 357] <... ioctl resumed>) = 0 [pid 408] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 407] <... close resumed>) = 0 [pid 406] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 405] ioctl(5, LOOP_SET_FD, 4 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 357] close(3 [pid 408] close(5 [pid 407] close(4 [pid 406] close(5 [pid 405] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 408] <... close resumed>) = 0 [pid 407] <... close resumed>) = 0 [pid 406] <... close resumed>) = 0 [pid 405] close(5 [pid 357] <... close resumed>) = 0 [pid 408] close(4 [pid 407] exit_group(0 [pid 406] close(4 [pid 405] <... close resumed>) = 0 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 409 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 407] <... exit_group resumed>) = ? [pid 408] <... close resumed>) = 0 [pid 407] +++ exited with 0 +++ ./strace-static-x86_64: Process 409 attached [pid 409] set_robust_list(0x5555574d4660, 24 [pid 406] <... close resumed>) = 0 [pid 409] <... set_robust_list resumed>) = 0 [pid 408] exit_group(0 [pid 406] exit_group(0 [pid 405] close(4 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 410 [pid 408] <... exit_group resumed>) = ? [pid 406] <... exit_group resumed>) = ? [pid 409] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 409] setpgid(0, 0 [pid 405] <... close resumed>) = 0 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=407, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 409] <... setpgid resumed>) = 0 [pid 409] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 406] +++ exited with 0 +++ [pid 409] <... openat resumed>) = 3 [pid 408] +++ exited with 0 +++ [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=406, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 405] exit_group(0 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 405] <... exit_group resumed>) = ? [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 360] <... openat resumed>) = 3 [pid 409] write(3, "1000", 4) = 4 [pid 409] close(3 [pid 405] +++ exited with 0 +++ [pid 360] ioctl(3, LOOP_CLR_FD [pid 359] <... openat resumed>) = 3 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=408, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 360] <... ioctl resumed>) = 0 [pid 409] <... close resumed>) = 0 [pid 409] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 360] close(3 [pid 359] ioctl(3, LOOP_CLR_FD [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=405, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 360] <... close resumed>) = 0 [pid 359] <... ioctl resumed>) = 0 [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 359] close(3 [pid 356] <... restart_syscall resumed>) = 0 [pid 358] <... restart_syscall resumed>) = 0 [pid 409] <... openat resumed>) = 3 [pid 409] ioctl(3, BLKSECDISCARD, [0, 0] [pid 359] <... close resumed>) = 0 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 411 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 409] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 409] memfd_create("syzkaller", 0 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 412 [pid 358] <... openat resumed>) = 3 [pid 356] <... openat resumed>) = 3 [pid 358] ioctl(3, LOOP_CLR_FD [pid 356] ioctl(3, LOOP_CLR_FD [pid 358] <... ioctl resumed>) = 0 [pid 358] close(3 [pid 356] <... ioctl resumed>) = 0 [pid 358] <... close resumed>) = 0 [pid 356] close(3 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] <... close resumed>) = 0 ./strace-static-x86_64: Process 410 attached [pid 409] <... memfd_create resumed>) = 4 [pid 410] set_robust_list(0x5555574d4660, 24 [pid 409] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 413 [pid 410] <... set_robust_list resumed>) = 0 [pid 409] <... mmap resumed>) = 0x7f1bc18a3000 [pid 410] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 409] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 414 attached ./strace-static-x86_64: Process 412 attached ./strace-static-x86_64: Process 411 attached [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 414 [pid 414] set_robust_list(0x5555574d4660, 24 [pid 412] set_robust_list(0x5555574d4660, 24 [pid 411] set_robust_list(0x5555574d4660, 24 [pid 410] <... prctl resumed>) = 0 [pid 409] <... write resumed>) = 262144 [pid 414] <... set_robust_list resumed>) = 0 [pid 412] <... set_robust_list resumed>) = 0 [pid 411] <... set_robust_list resumed>) = 0 [pid 414] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 411] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 410] setpgid(0, 0 [pid 414] <... prctl resumed>) = 0 [pid 412] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 411] <... prctl resumed>) = 0 [pid 414] setpgid(0, 0 [pid 412] <... prctl resumed>) = 0 [pid 411] setpgid(0, 0 [pid 410] <... setpgid resumed>) = 0 [pid 414] <... setpgid resumed>) = 0 [pid 411] <... setpgid resumed>) = 0 [pid 414] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 412] setpgid(0, 0 [pid 411] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 413 attached [pid 414] <... openat resumed>) = 3 [pid 412] <... setpgid resumed>) = 0 [pid 411] <... openat resumed>) = 3 [pid 410] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 409] munmap(0x7f1bc18a3000, 138412032 [pid 414] write(3, "1000", 4 [pid 413] set_robust_list(0x5555574d4660, 24 [pid 412] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 411] write(3, "1000", 4 [pid 410] <... openat resumed>) = 3 [pid 414] <... write resumed>) = 4 [pid 413] <... set_robust_list resumed>) = 0 [pid 412] <... openat resumed>) = 3 [pid 411] <... write resumed>) = 4 [pid 410] write(3, "1000", 4 [pid 409] <... munmap resumed>) = 0 [pid 414] close(3 [pid 413] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 412] write(3, "1000", 4 [pid 411] close(3 [pid 410] <... write resumed>) = 4 [pid 414] <... close resumed>) = 0 [pid 413] <... prctl resumed>) = 0 [pid 412] <... write resumed>) = 4 [pid 411] <... close resumed>) = 0 [pid 410] close(3 [pid 409] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 414] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 413] setpgid(0, 0 [pid 412] close(3 [pid 411] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 410] <... close resumed>) = 0 [pid 414] <... openat resumed>) = 3 [pid 413] <... setpgid resumed>) = 0 [pid 412] <... close resumed>) = 0 [pid 411] <... openat resumed>) = 3 [pid 410] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 409] <... openat resumed>) = 5 [pid 414] ioctl(3, BLKSECDISCARD, [0, 0] [pid 413] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 412] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 411] ioctl(3, BLKSECDISCARD, [0, 0] [pid 410] <... openat resumed>) = 3 [pid 413] <... openat resumed>) = 3 [pid 410] ioctl(3, BLKSECDISCARD, [0, 0] [pid 409] ioctl(5, LOOP_SET_FD, 4 [pid 413] write(3, "1000", 4 [pid 410] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 409] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 413] <... write resumed>) = 4 [pid 410] memfd_create("syzkaller", 0 [pid 409] ioctl(5, LOOP_CLR_FD [pid 413] close(3 [pid 410] <... memfd_create resumed>) = 4 [pid 409] <... ioctl resumed>) = 0 [pid 413] <... close resumed>) = 0 [pid 410] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 413] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 410] <... mmap resumed>) = 0x7f1bc18a3000 [pid 414] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 413] <... openat resumed>) = 3 [pid 412] <... openat resumed>) = 3 [pid 411] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 410] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 414] memfd_create("syzkaller", 0 [pid 413] ioctl(3, BLKSECDISCARD, [0, 0] [pid 412] ioctl(3, BLKSECDISCARD, [0, 0] [pid 411] memfd_create("syzkaller", 0 [pid 410] <... write resumed>) = 262144 [pid 409] ioctl(5, LOOP_SET_FD, 4 [pid 414] <... memfd_create resumed>) = 4 [pid 413] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 412] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 411] <... memfd_create resumed>) = 4 [pid 410] munmap(0x7f1bc18a3000, 138412032 [pid 409] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 414] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 413] memfd_create("syzkaller", 0 [pid 412] memfd_create("syzkaller", 0 [pid 411] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 410] <... munmap resumed>) = 0 [pid 409] close(5 [pid 414] <... mmap resumed>) = 0x7f1bc18a3000 [pid 413] <... memfd_create resumed>) = 4 [pid 412] <... memfd_create resumed>) = 4 [pid 411] <... mmap resumed>) = 0x7f1bc18a3000 [pid 410] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 409] <... close resumed>) = 0 [pid 413] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 410] <... openat resumed>) = 5 [pid 409] close(4 [pid 414] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 413] <... mmap resumed>) = 0x7f1bc18a3000 [pid 412] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 410] ioctl(5, LOOP_SET_FD, 4 [pid 409] <... close resumed>) = 0 [pid 414] <... write resumed>) = 262144 [pid 413] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 412] <... mmap resumed>) = 0x7f1bc18a3000 [pid 411] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 410] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 409] exit_group(0 [pid 414] munmap(0x7f1bc18a3000, 138412032 [pid 413] <... write resumed>) = 262144 [pid 410] ioctl(5, LOOP_CLR_FD [pid 409] <... exit_group resumed>) = ? [pid 413] munmap(0x7f1bc18a3000, 138412032 [pid 412] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 411] <... write resumed>) = 262144 [pid 410] <... ioctl resumed>) = 0 [pid 409] +++ exited with 0 +++ [pid 414] <... munmap resumed>) = 0 [pid 413] <... munmap resumed>) = 0 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=409, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 413] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 414] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 413] <... openat resumed>) = 5 [pid 412] <... write resumed>) = 262144 [pid 411] munmap(0x7f1bc18a3000, 138412032 [pid 414] <... openat resumed>) = 5 [pid 413] ioctl(5, LOOP_SET_FD, 4 [pid 412] munmap(0x7f1bc18a3000, 138412032 [pid 411] <... munmap resumed>) = 0 [pid 414] ioctl(5, LOOP_SET_FD, 4 [pid 413] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 412] <... munmap resumed>) = 0 [pid 411] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 410] ioctl(5, LOOP_SET_FD, 4 [pid 414] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 413] ioctl(5, LOOP_CLR_FD [pid 412] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 411] <... openat resumed>) = 5 [pid 410] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 414] ioctl(5, LOOP_CLR_FD [pid 413] <... ioctl resumed>) = 0 [pid 412] <... openat resumed>) = 5 [pid 411] ioctl(5, LOOP_SET_FD, 4 [pid 410] close(5 [pid 414] <... ioctl resumed>) = 0 [pid 412] ioctl(5, LOOP_SET_FD, 4 [pid 411] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 410] <... close resumed>) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 412] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 411] ioctl(5, LOOP_CLR_FD [pid 410] close(4 [pid 361] <... openat resumed>) = 3 [pid 412] ioctl(5, LOOP_CLR_FD [pid 411] <... ioctl resumed>) = 0 [pid 410] <... close resumed>) = 0 [pid 361] ioctl(3, LOOP_CLR_FD [pid 414] ioctl(5, LOOP_SET_FD, 4 [pid 413] ioctl(5, LOOP_SET_FD, 4 [pid 412] <... ioctl resumed>) = 0 [pid 410] exit_group(0 [pid 361] <... ioctl resumed>) = 0 [pid 414] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 413] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 410] <... exit_group resumed>) = ? [pid 361] close(3 [pid 414] close(5 [pid 413] close(5 [pid 410] +++ exited with 0 +++ [pid 361] <... close resumed>) = 0 [pid 414] <... close resumed>) = 0 [pid 413] <... close resumed>) = 0 [pid 411] ioctl(5, LOOP_SET_FD, 4 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=410, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 414] close(4 [pid 413] close(4 [pid 412] ioctl(5, LOOP_SET_FD, 4 [pid 411] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 413] <... close resumed>) = 0 [pid 414] <... close resumed>) = 0 [pid 413] exit_group(0 [pid 412] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 411] close(5 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 415 [pid 414] exit_group(0 [pid 413] <... exit_group resumed>) = ? [pid 412] close(5 [pid 411] <... close resumed>) = 0 [pid 414] <... exit_group resumed>) = ? [pid 413] +++ exited with 0 +++ [pid 412] <... close resumed>) = 0 [pid 411] close(4 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 415 attached [pid 414] +++ exited with 0 +++ [pid 415] set_robust_list(0x5555574d4660, 24) = 0 [pid 415] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 411] <... close resumed>) = 0 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=413, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] <... openat resumed>) = 3 [pid 412] close(4 [pid 357] ioctl(3, LOOP_CLR_FD [pid 415] <... prctl resumed>) = 0 [pid 415] setpgid(0, 0) = 0 [pid 412] <... close resumed>) = 0 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=414, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 412] exit_group(0 [pid 411] exit_group(0 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 357] <... ioctl resumed>) = 0 [pid 412] <... exit_group resumed>) = ? [pid 411] <... exit_group resumed>) = ? [pid 358] <... openat resumed>) = 3 [pid 357] close(3 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 415] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 411] +++ exited with 0 +++ [pid 356] <... openat resumed>) = 3 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=411, si_uid=0, si_status=0, si_utime=1, si_stime=0} --- [pid 357] <... close resumed>) = 0 [pid 358] ioctl(3, LOOP_CLR_FD [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] ioctl(3, LOOP_CLR_FD [pid 358] <... ioctl resumed>) = 0 [pid 415] write(3, "1000", 4) = 4 [pid 412] +++ exited with 0 +++ [pid 415] close(3) = 0 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 358] close(3 [pid 356] <... ioctl resumed>) = 0 [pid 360] <... openat resumed>) = 3 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=412, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] <... close resumed>) = 0 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 416 [pid 356] close(3 [pid 360] ioctl(3, LOOP_CLR_FD [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 360] <... ioctl resumed>) = 0 [pid 356] <... close resumed>) = 0 [pid 415] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 360] close(3 [pid 359] <... restart_syscall resumed>) = 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 360] <... close resumed>) = 0 [pid 415] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 417 [pid 415] memfd_create("syzkaller", 0 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 415] <... memfd_create resumed>) = 4 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 419 [pid 359] <... openat resumed>) = 3 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 418 [pid 359] ioctl(3, LOOP_CLR_FD) = 0 [pid 359] close(3 [pid 415] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 359] <... close resumed>) = 0 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 416 attached [pid 415] <... mmap resumed>) = 0x7f1bc18a3000 ./strace-static-x86_64: Process 419 attached ./strace-static-x86_64: Process 417 attached [pid 416] set_robust_list(0x5555574d4660, 24 [pid 415] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 419] set_robust_list(0x5555574d4660, 24 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 420 [pid 417] set_robust_list(0x5555574d4660, 24 [pid 419] <... set_robust_list resumed>) = 0 [pid 417] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 420 attached [pid 419] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 417] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 416] <... set_robust_list resumed>) = 0 [pid 415] <... write resumed>) = 262144 [pid 419] <... prctl resumed>) = 0 [pid 417] <... prctl resumed>) = 0 [pid 420] set_robust_list(0x5555574d4660, 24 [pid 419] setpgid(0, 0 [pid 420] <... set_robust_list resumed>) = 0 [pid 419] <... setpgid resumed>) = 0 [pid 417] setpgid(0, 0./strace-static-x86_64: Process 418 attached [pid 420] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 419] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 417] <... setpgid resumed>) = 0 [pid 416] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 419] <... openat resumed>) = 3 [pid 420] <... prctl resumed>) = 0 [pid 419] write(3, "1000", 4 [pid 418] set_robust_list(0x5555574d4660, 24 [pid 417] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 416] <... prctl resumed>) = 0 [pid 415] munmap(0x7f1bc18a3000, 138412032 [pid 417] <... openat resumed>) = 3 [pid 419] <... write resumed>) = 4 [pid 420] setpgid(0, 0 [pid 419] close(3 [pid 417] write(3, "1000", 4 [pid 420] <... setpgid resumed>) = 0 [pid 419] <... close resumed>) = 0 [pid 417] <... write resumed>) = 4 [pid 417] close(3 [pid 420] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 419] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 418] <... set_robust_list resumed>) = 0 [pid 417] <... close resumed>) = 0 [pid 416] setpgid(0, 0 [pid 415] <... munmap resumed>) = 0 [pid 420] <... openat resumed>) = 3 [pid 419] <... openat resumed>) = 3 [pid 418] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 417] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 416] <... setpgid resumed>) = 0 [pid 420] write(3, "1000", 4 [pid 419] ioctl(3, BLKSECDISCARD, [0, 0] [pid 418] <... prctl resumed>) = 0 [pid 417] <... openat resumed>) = 3 [pid 416] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 415] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 420] <... write resumed>) = 4 [pid 419] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 418] setpgid(0, 0 [pid 417] ioctl(3, BLKSECDISCARD, [0, 0] [pid 416] <... openat resumed>) = 3 [pid 420] close(3 [pid 419] memfd_create("syzkaller", 0 [pid 418] <... setpgid resumed>) = 0 [pid 417] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 416] write(3, "1000", 4 [pid 415] <... openat resumed>) = 5 [pid 420] <... close resumed>) = 0 [pid 419] <... memfd_create resumed>) = 4 [pid 418] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 417] memfd_create("syzkaller", 0 [pid 416] <... write resumed>) = 4 [pid 420] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 419] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 418] <... openat resumed>) = 3 [pid 417] <... memfd_create resumed>) = 4 [pid 416] close(3 [pid 415] ioctl(5, LOOP_SET_FD, 4 [pid 420] <... openat resumed>) = 3 [pid 419] <... mmap resumed>) = 0x7f1bc18a3000 [pid 418] write(3, "1000", 4 [pid 417] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 416] <... close resumed>) = 0 [pid 415] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 420] ioctl(3, BLKSECDISCARD, [0, 0] [pid 418] <... write resumed>) = 4 [pid 416] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 415] ioctl(5, LOOP_CLR_FD [pid 418] close(3 [pid 416] <... openat resumed>) = 3 [pid 415] <... ioctl resumed>) = 0 [pid 420] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 419] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 418] <... close resumed>) = 0 [pid 417] <... mmap resumed>) = 0x7f1bc18a3000 [pid 416] ioctl(3, BLKSECDISCARD, [0, 0] [pid 420] memfd_create("syzkaller", 0 [pid 418] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 416] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 419] <... write resumed>) = 262144 [pid 418] <... openat resumed>) = 3 [pid 416] memfd_create("syzkaller", 0 [pid 418] ioctl(3, BLKSECDISCARD, [0, 0] [pid 416] <... memfd_create resumed>) = 4 [pid 418] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 416] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 415] ioctl(5, LOOP_SET_FD, 4 [pid 420] <... memfd_create resumed>) = 4 [pid 419] munmap(0x7f1bc18a3000, 138412032 [pid 418] memfd_create("syzkaller", 0 [pid 417] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 416] <... mmap resumed>) = 0x7f1bc18a3000 [pid 415] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 420] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 419] <... munmap resumed>) = 0 [pid 418] <... memfd_create resumed>) = 4 [pid 417] <... write resumed>) = 262144 [pid 416] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 415] close(5 [pid 420] <... mmap resumed>) = 0x7f1bc18a3000 [pid 419] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 418] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 417] munmap(0x7f1bc18a3000, 138412032 [pid 416] <... write resumed>) = 262144 [pid 415] <... close resumed>) = 0 [pid 418] <... mmap resumed>) = 0x7f1bc18a3000 [pid 416] munmap(0x7f1bc18a3000, 138412032 [pid 415] close(4 [pid 420] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 419] <... openat resumed>) = 5 [pid 418] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 417] <... munmap resumed>) = 0 [pid 416] <... munmap resumed>) = 0 [pid 415] <... close resumed>) = 0 [pid 420] <... write resumed>) = 262144 [pid 419] ioctl(5, LOOP_SET_FD, 4 [pid 418] <... write resumed>) = 262144 [pid 417] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 416] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 415] exit_group(0 [pid 418] munmap(0x7f1bc18a3000, 138412032 [pid 416] <... openat resumed>) = 5 [pid 415] <... exit_group resumed>) = ? [pid 420] munmap(0x7f1bc18a3000, 138412032 [pid 419] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 418] <... munmap resumed>) = 0 [pid 417] <... openat resumed>) = 5 [pid 416] ioctl(5, LOOP_SET_FD, 4 [pid 415] +++ exited with 0 +++ [pid 420] <... munmap resumed>) = 0 [pid 419] ioctl(5, LOOP_CLR_FD [pid 418] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 417] ioctl(5, LOOP_SET_FD, 4 [pid 416] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 420] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 419] <... ioctl resumed>) = 0 [pid 418] <... openat resumed>) = 5 [pid 417] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 416] ioctl(5, LOOP_CLR_FD [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=415, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 420] <... openat resumed>) = 5 [pid 418] ioctl(5, LOOP_SET_FD, 4 [pid 417] ioctl(5, LOOP_CLR_FD [pid 416] <... ioctl resumed>) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 420] ioctl(5, LOOP_SET_FD, 4 [pid 418] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 417] <... ioctl resumed>) = 0 [pid 361] <... openat resumed>) = 3 [pid 420] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 418] ioctl(5, LOOP_CLR_FD [pid 361] ioctl(3, LOOP_CLR_FD [pid 420] ioctl(5, LOOP_CLR_FD [pid 419] ioctl(5, LOOP_SET_FD, 4 [pid 418] <... ioctl resumed>) = 0 [pid 361] <... ioctl resumed>) = 0 [pid 420] <... ioctl resumed>) = 0 [pid 419] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] close(3 [pid 419] close(5 [pid 416] ioctl(5, LOOP_SET_FD, 4 [pid 361] <... close resumed>) = 0 [pid 419] <... close resumed>) = 0 [pid 416] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 419] close(4 [pid 417] ioctl(5, LOOP_SET_FD, 4 [pid 416] close(5 [pid 418] ioctl(5, LOOP_SET_FD, 4 [pid 416] <... close resumed>) = 0 [pid 418] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 416] close(4 [pid 420] ioctl(5, LOOP_SET_FD, 4 [pid 419] <... close resumed>) = 0 [pid 418] close(5 [pid 417] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 416] <... close resumed>) = 0 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 421 [pid 420] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 419] exit_group(0 [pid 418] <... close resumed>) = 0 [pid 417] close(5 [pid 416] exit_group(0 [pid 420] close(5 [pid 419] <... exit_group resumed>) = ? [pid 418] close(4 [pid 417] <... close resumed>) = 0 [pid 416] <... exit_group resumed>) = ? [pid 420] <... close resumed>) = 0 [pid 419] +++ exited with 0 +++ [pid 418] <... close resumed>) = 0 [pid 417] close(4 [pid 416] +++ exited with 0 +++ [pid 420] close(4 [pid 418] exit_group(0) = ? [pid 418] +++ exited with 0 +++ [pid 417] <... close resumed>) = 0 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=416, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 421 attached [pid 421] set_robust_list(0x5555574d4660, 24 [pid 420] <... close resumed>) = 0 [pid 417] exit_group(0 [pid 420] exit_group(0 [pid 417] <... exit_group resumed>) = ? [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=419, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=418, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 420] <... exit_group resumed>) = ? [pid 421] <... set_robust_list resumed>) = 0 [pid 421] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 417] +++ exited with 0 +++ [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 421] <... prctl resumed>) = 0 [pid 420] +++ exited with 0 +++ [pid 360] <... restart_syscall resumed>) = 0 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=420, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=417, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] <... restart_syscall resumed>) = 0 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 360] <... openat resumed>) = 3 [pid 357] <... openat resumed>) = 3 [pid 360] ioctl(3, LOOP_CLR_FD [pid 357] ioctl(3, LOOP_CLR_FD [pid 356] <... openat resumed>) = 3 [pid 360] <... ioctl resumed>) = 0 [pid 357] <... ioctl resumed>) = 0 [pid 356] ioctl(3, LOOP_CLR_FD [pid 360] close(3 [pid 357] close(3 [pid 356] <... ioctl resumed>) = 0 [pid 360] <... close resumed>) = 0 [pid 357] <... close resumed>) = 0 [pid 356] close(3 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] <... close resumed>) = 0 [pid 421] setpgid(0, 0) = 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 421] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 422 [pid 359] <... openat resumed>) = 3 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 423 [pid 359] ioctl(3, LOOP_CLR_FD [pid 358] <... openat resumed>) = 3 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 424 [pid 359] <... ioctl resumed>) = 0 [pid 358] ioctl(3, LOOP_CLR_FD [pid 359] close(3 [pid 358] <... ioctl resumed>) = 0 [pid 359] <... close resumed>) = 0 [pid 358] close(3 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] <... close resumed>) = 0 [pid 421] write(3, "1000", 4) = 4 [pid 421] close(3 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 421] <... close resumed>) = 0 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 425 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 426 [pid 421] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 421] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 421] memfd_create("syzkaller", 0./strace-static-x86_64: Process 423 attached ./strace-static-x86_64: Process 425 attached ./strace-static-x86_64: Process 424 attached ./strace-static-x86_64: Process 422 attached [pid 423] set_robust_list(0x5555574d4660, 24 [pid 421] <... memfd_create resumed>) = 4 [pid 425] set_robust_list(0x5555574d4660, 24 [pid 424] set_robust_list(0x5555574d4660, 24 [pid 423] <... set_robust_list resumed>) = 0 [pid 422] set_robust_list(0x5555574d4660, 24 [pid 421] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 425] <... set_robust_list resumed>) = 0 [pid 424] <... set_robust_list resumed>) = 0 [pid 423] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 422] <... set_robust_list resumed>) = 0 [pid 421] <... mmap resumed>) = 0x7f1bc18a3000 [pid 424] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 422] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 421] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 424] <... prctl resumed>) = 0 [pid 422] <... prctl resumed>) = 0 [pid 421] <... write resumed>) = 262144 ./strace-static-x86_64: Process 426 attached [pid 424] setpgid(0, 0 [pid 422] setpgid(0, 0 [pid 421] munmap(0x7f1bc18a3000, 138412032 [pid 426] set_robust_list(0x5555574d4660, 24 [pid 424] <... setpgid resumed>) = 0 [pid 422] <... setpgid resumed>) = 0 [pid 421] <... munmap resumed>) = 0 [pid 423] <... prctl resumed>) = 0 [pid 426] <... set_robust_list resumed>) = 0 [pid 424] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 423] setpgid(0, 0 [pid 422] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 421] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 426] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 425] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 424] <... openat resumed>) = 3 [pid 422] <... openat resumed>) = 3 [pid 426] <... prctl resumed>) = 0 [pid 424] write(3, "1000", 4 [pid 422] write(3, "1000", 4 [pid 425] <... prctl resumed>) = 0 [pid 423] <... setpgid resumed>) = 0 [pid 421] <... openat resumed>) = 5 [pid 426] setpgid(0, 0 [pid 424] <... write resumed>) = 4 [pid 422] <... write resumed>) = 4 [pid 423] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 425] setpgid(0, 0 [pid 426] <... setpgid resumed>) = 0 [pid 424] close(3 [pid 423] <... openat resumed>) = 3 [pid 422] close(3 [pid 425] <... setpgid resumed>) = 0 [pid 421] ioctl(5, LOOP_SET_FD, 4 [pid 426] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 424] <... close resumed>) = 0 [pid 423] write(3, "1000", 4 [pid 422] <... close resumed>) = 0 [pid 426] <... openat resumed>) = 3 [pid 425] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 424] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 423] <... write resumed>) = 4 [pid 422] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 421] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 426] write(3, "1000", 4 [pid 425] <... openat resumed>) = 3 [pid 424] <... openat resumed>) = 3 [pid 423] close(3 [pid 422] <... openat resumed>) = 3 [pid 421] ioctl(5, LOOP_CLR_FD [pid 426] <... write resumed>) = 4 [pid 425] write(3, "1000", 4 [pid 424] ioctl(3, BLKSECDISCARD, [0, 0] [pid 423] <... close resumed>) = 0 [pid 422] ioctl(3, BLKSECDISCARD, [0, 0] [pid 421] <... ioctl resumed>) = 0 [pid 426] close(3 [pid 425] <... write resumed>) = 4 [pid 424] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 423] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 422] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 426] <... close resumed>) = 0 [pid 425] close(3 [pid 424] memfd_create("syzkaller", 0 [pid 423] <... openat resumed>) = 3 [pid 422] memfd_create("syzkaller", 0 [pid 426] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 425] <... close resumed>) = 0 [pid 424] <... memfd_create resumed>) = 4 [pid 423] ioctl(3, BLKSECDISCARD, [0, 0] [pid 422] <... memfd_create resumed>) = 4 [pid 426] <... openat resumed>) = 3 [pid 425] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 424] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 423] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 422] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 421] ioctl(5, LOOP_SET_FD, 4 [pid 426] ioctl(3, BLKSECDISCARD, [0, 0] [pid 425] <... openat resumed>) = 3 [pid 424] <... mmap resumed>) = 0x7f1bc18a3000 [pid 423] memfd_create("syzkaller", 0 [pid 422] <... mmap resumed>) = 0x7f1bc18a3000 [pid 421] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 426] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 425] ioctl(3, BLKSECDISCARD, [0, 0] [pid 424] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 423] <... memfd_create resumed>) = 4 [pid 425] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 423] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 425] memfd_create("syzkaller", 0 [pid 423] <... mmap resumed>) = 0x7f1bc18a3000 [pid 426] memfd_create("syzkaller", 0 [pid 425] <... memfd_create resumed>) = 4 [pid 424] <... write resumed>) = 262144 [pid 422] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 421] close(5 [pid 426] <... memfd_create resumed>) = 4 [pid 425] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 424] munmap(0x7f1bc18a3000, 138412032 [pid 423] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 422] <... write resumed>) = 262144 [pid 421] <... close resumed>) = 0 [pid 426] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 425] <... mmap resumed>) = 0x7f1bc18a3000 [pid 424] <... munmap resumed>) = 0 [pid 422] munmap(0x7f1bc18a3000, 138412032 [pid 421] close(4 [pid 426] <... mmap resumed>) = 0x7f1bc18a3000 [pid 424] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 423] <... write resumed>) = 262144 [pid 422] <... munmap resumed>) = 0 [pid 421] <... close resumed>) = 0 [pid 426] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 425] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 424] <... openat resumed>) = 5 [pid 423] munmap(0x7f1bc18a3000, 138412032 [pid 422] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 421] exit_group(0 [pid 426] <... write resumed>) = 262144 [pid 424] ioctl(5, LOOP_SET_FD, 4 [pid 422] <... openat resumed>) = 5 [pid 421] <... exit_group resumed>) = ? [pid 426] munmap(0x7f1bc18a3000, 138412032 [pid 425] <... write resumed>) = 262144 [pid 424] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 423] <... munmap resumed>) = 0 [pid 422] ioctl(5, LOOP_SET_FD, 4 [pid 421] +++ exited with 0 +++ [pid 426] <... munmap resumed>) = 0 [pid 425] munmap(0x7f1bc18a3000, 138412032 [pid 424] ioctl(5, LOOP_CLR_FD [pid 423] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 422] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=421, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 426] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 425] <... munmap resumed>) = 0 [pid 424] <... ioctl resumed>) = 0 [pid 423] <... openat resumed>) = 5 [pid 422] ioctl(5, LOOP_CLR_FD [pid 426] <... openat resumed>) = 5 [pid 425] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 423] ioctl(5, LOOP_SET_FD, 4 [pid 422] <... ioctl resumed>) = 0 [pid 426] ioctl(5, LOOP_SET_FD, 4 [pid 425] <... openat resumed>) = 5 [pid 423] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 426] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 425] ioctl(5, LOOP_SET_FD, 4 [pid 423] ioctl(5, LOOP_CLR_FD [pid 426] ioctl(5, LOOP_CLR_FD [pid 425] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 423] <... ioctl resumed>) = 0 [pid 426] <... ioctl resumed>) = 0 [pid 425] ioctl(5, LOOP_CLR_FD) = 0 [pid 424] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 422] ioctl(5, LOOP_SET_FD, 4 [pid 424] close(5 [pid 422] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 424] <... close resumed>) = 0 [pid 422] close(5 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 426] ioctl(5, LOOP_SET_FD, 4 [pid 424] close(4 [pid 423] ioctl(5, LOOP_SET_FD, 4 [pid 422] <... close resumed>) = 0 [pid 426] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 424] <... close resumed>) = 0 [pid 423] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 422] close(4 [pid 361] <... openat resumed>) = 3 [pid 426] close(5 [pid 425] ioctl(5, LOOP_SET_FD, 4 [pid 424] exit_group(0 [pid 423] close(5 [pid 422] <... close resumed>) = 0 [pid 361] ioctl(3, LOOP_CLR_FD [pid 426] <... close resumed>) = 0 [pid 425] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 424] <... exit_group resumed>) = ? [pid 423] <... close resumed>) = 0 [pid 422] exit_group(0 [pid 361] <... ioctl resumed>) = 0 [pid 426] close(4 [pid 425] close(5 [pid 424] +++ exited with 0 +++ [pid 423] close(4 [pid 422] <... exit_group resumed>) = ? [pid 361] close(3 [pid 426] <... close resumed>) = 0 [pid 425] <... close resumed>) = 0 [pid 422] +++ exited with 0 +++ [pid 423] <... close resumed>) = 0 [pid 426] exit_group(0 [pid 425] close(4 [pid 423] exit_group(0 [pid 361] <... close resumed>) = 0 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=422, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 426] <... exit_group resumed>) = ? [pid 426] +++ exited with 0 +++ [pid 425] <... close resumed>) = 0 [pid 423] <... exit_group resumed>) = ? [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] --- 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] exit_group(0 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 423] +++ exited with 0 +++ [pid 360] <... openat resumed>) = 3 [pid 360] ioctl(3, LOOP_CLR_FD) = 0 [pid 425] <... exit_group resumed>) = ? [pid 360] close(3 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=426, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=423, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 360] <... close resumed>) = 0 [pid 425] +++ exited with 0 +++ [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 427 [pid 356] <... restart_syscall resumed>) = 0 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=425, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 428 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 358] <... openat resumed>) = 3 [pid 358] ioctl(3, LOOP_CLR_FD [pid 357] <... openat resumed>) = 3 [pid 358] <... ioctl resumed>) = 0 [pid 357] ioctl(3, LOOP_CLR_FD [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 358] close(3 [pid 357] <... ioctl resumed>) = 0 [pid 356] <... openat resumed>) = 3 [pid 358] <... close resumed>) = 0 [pid 357] close(3 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] ioctl(3, LOOP_CLR_FD [pid 357] <... close resumed>) = 0 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] <... ioctl resumed>) = 0 [pid 359] ioctl(3, LOOP_CLR_FD [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 429 [pid 359] <... ioctl resumed>) = 0 [pid 359] close(3 [pid 356] close(3./strace-static-x86_64: Process 427 attached [pid 359] <... close resumed>) = 0 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 430 [pid 356] <... close resumed>) = 0 ./strace-static-x86_64: Process 428 attached [pid 427] set_robust_list(0x5555574d4660, 24 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 428] set_robust_list(0x5555574d4660, 24 [pid 427] <... set_robust_list resumed>) = 0 [pid 428] <... set_robust_list resumed>) = 0 [pid 427] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 431 [pid 428] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 427] <... prctl resumed>) = 0 [pid 427] setpgid(0, 0) = 0 [pid 428] <... prctl resumed>) = 0 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 432 ./strace-static-x86_64: Process 429 attached [pid 427] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 429] set_robust_list(0x5555574d4660, 24 [pid 428] setpgid(0, 0 [pid 429] <... set_robust_list resumed>) = 0 [pid 428] <... setpgid resumed>) = 0 [pid 429] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 428] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 427] <... openat resumed>) = 3 [pid 429] <... prctl resumed>) = 0 [pid 428] <... openat resumed>) = 3 [pid 427] write(3, "1000", 4 [pid 429] setpgid(0, 0 [pid 428] write(3, "1000", 4 [pid 427] <... write resumed>) = 4 ./strace-static-x86_64: Process 431 attached [pid 429] <... setpgid resumed>) = 0 [pid 428] <... write resumed>) = 4 [pid 427] close(3 [pid 431] set_robust_list(0x5555574d4660, 24 [pid 429] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 428] close(3 [pid 427] <... close resumed>) = 0 ./strace-static-x86_64: Process 430 attached [pid 431] <... set_robust_list resumed>) = 0 [pid 429] <... openat resumed>) = 3 [pid 428] <... close resumed>) = 0 [pid 427] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 429] write(3, "1000", 4 [pid 431] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 430] set_robust_list(0x5555574d4660, 24 [pid 428] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 427] <... openat resumed>) = 3 [pid 429] <... write resumed>) = 4 [pid 431] <... prctl resumed>) = 0 [pid 430] <... set_robust_list resumed>) = 0 [pid 429] close(3 [pid 428] <... openat resumed>) = 3 [pid 427] ioctl(3, BLKSECDISCARD, [0, 0]./strace-static-x86_64: Process 432 attached [pid 431] setpgid(0, 0 [pid 430] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 429] <... close resumed>) = 0 [pid 428] ioctl(3, BLKSECDISCARD, [0, 0] [pid 427] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 432] set_robust_list(0x5555574d4660, 24 [pid 431] <... setpgid resumed>) = 0 [pid 430] <... prctl resumed>) = 0 [pid 429] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 428] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 427] memfd_create("syzkaller", 0 [pid 432] <... set_robust_list resumed>) = 0 [pid 431] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 430] setpgid(0, 0 [pid 429] <... openat resumed>) = 3 [pid 428] memfd_create("syzkaller", 0 [pid 427] <... memfd_create resumed>) = 4 [pid 432] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 431] <... openat resumed>) = 3 [pid 430] <... setpgid resumed>) = 0 [pid 429] ioctl(3, BLKSECDISCARD, [0, 0] [pid 428] <... memfd_create resumed>) = 4 [pid 427] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 432] <... prctl resumed>) = 0 [pid 431] write(3, "1000", 4 [pid 430] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 429] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 428] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 427] <... mmap resumed>) = 0x7f1bc18a3000 [pid 432] setpgid(0, 0 [pid 431] <... write resumed>) = 4 [pid 430] <... openat resumed>) = 3 [pid 429] memfd_create("syzkaller", 0 [pid 428] <... mmap resumed>) = 0x7f1bc18a3000 [pid 427] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 432] <... setpgid resumed>) = 0 [pid 431] close(3 [pid 430] write(3, "1000", 4 [pid 429] <... memfd_create resumed>) = 4 [pid 427] <... write resumed>) = 262144 [pid 432] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 431] <... close resumed>) = 0 [pid 430] <... write resumed>) = 4 [pid 429] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 428] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 427] munmap(0x7f1bc18a3000, 138412032 [pid 432] <... openat resumed>) = 3 [pid 431] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 430] close(3 [pid 429] <... mmap resumed>) = 0x7f1bc18a3000 [pid 427] <... munmap resumed>) = 0 [pid 432] write(3, "1000", 4 [pid 430] <... close resumed>) = 0 [pid 428] <... write resumed>) = 262144 [pid 431] <... openat resumed>) = 3 [pid 427] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 432] <... write resumed>) = 4 [pid 430] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 427] <... openat resumed>) = 5 [pid 432] close(3 [pid 430] <... openat resumed>) = 3 [pid 427] ioctl(5, LOOP_SET_FD, 4 [pid 432] <... close resumed>) = 0 [pid 431] ioctl(3, BLKSECDISCARD, [0, 0] [pid 430] ioctl(3, BLKSECDISCARD, [0, 0] [pid 429] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 428] munmap(0x7f1bc18a3000, 138412032 [pid 427] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 432] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 431] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 430] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 427] ioctl(5, LOOP_CLR_FD [pid 432] <... openat resumed>) = 3 [pid 430] memfd_create("syzkaller", 0 [pid 427] <... ioctl resumed>) = 0 [pid 432] ioctl(3, BLKSECDISCARD, [0, 0] [pid 431] memfd_create("syzkaller", 0 [pid 430] <... memfd_create resumed>) = 4 [pid 429] <... write resumed>) = 262144 [pid 428] <... munmap resumed>) = 0 [pid 432] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 431] <... memfd_create resumed>) = 4 [pid 430] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 429] munmap(0x7f1bc18a3000, 138412032 [pid 428] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 432] memfd_create("syzkaller", 0 [pid 431] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 430] <... mmap resumed>) = 0x7f1bc18a3000 [pid 429] <... munmap resumed>) = 0 [pid 428] <... openat resumed>) = 5 [pid 432] <... memfd_create resumed>) = 4 [pid 431] <... mmap resumed>) = 0x7f1bc18a3000 [pid 430] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 432] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 430] <... write resumed>) = 262144 [pid 427] ioctl(5, LOOP_SET_FD, 4 [pid 432] <... mmap resumed>) = 0x7f1bc18a3000 [pid 430] munmap(0x7f1bc18a3000, 138412032 [pid 429] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 428] ioctl(5, LOOP_SET_FD, 4 [pid 427] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 432] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 431] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 430] <... munmap resumed>) = 0 [pid 429] <... openat resumed>) = 5 [pid 428] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 427] close(5 [pid 432] <... write resumed>) = 262144 [pid 430] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 427] <... close resumed>) = 0 [pid 432] munmap(0x7f1bc18a3000, 138412032 [pid 430] <... openat resumed>) = 5 [pid 427] close(4 [pid 432] <... munmap resumed>) = 0 [pid 431] <... write resumed>) = 262144 [pid 430] ioctl(5, LOOP_SET_FD, 4 [pid 429] ioctl(5, LOOP_SET_FD, 4 [pid 428] ioctl(5, LOOP_CLR_FD [pid 427] <... close resumed>) = 0 [pid 432] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 431] munmap(0x7f1bc18a3000, 138412032 [pid 430] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 429] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 428] <... ioctl resumed>) = 0 [pid 427] exit_group(0 [pid 432] <... openat resumed>) = 5 [pid 430] ioctl(5, LOOP_CLR_FD [pid 429] ioctl(5, LOOP_CLR_FD [pid 427] <... exit_group resumed>) = ? [pid 432] ioctl(5, LOOP_SET_FD, 4 [pid 431] <... munmap resumed>) = 0 [pid 430] <... ioctl resumed>) = 0 [pid 429] <... ioctl resumed>) = 0 [pid 427] +++ exited with 0 +++ [pid 432] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 431] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 432] ioctl(5, LOOP_CLR_FD [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=427, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 432] <... ioctl resumed>) = 0 [pid 431] <... openat resumed>) = 5 [pid 428] ioctl(5, LOOP_SET_FD, 4 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 431] ioctl(5, LOOP_SET_FD, 4 [pid 428] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] <... openat resumed>) = 3 [pid 431] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 428] close(5 [pid 361] ioctl(3, LOOP_CLR_FD [pid 428] <... close resumed>) = 0 [pid 428] close(4 [pid 431] ioctl(5, LOOP_CLR_FD [pid 361] <... ioctl resumed>) = 0 [pid 430] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 430] close(5) = 0 [pid 430] close(4 [pid 431] <... ioctl resumed>) = 0 [pid 430] <... close resumed>) = 0 [pid 428] <... close resumed>) = 0 [pid 361] close(3 [pid 432] ioctl(5, LOOP_SET_FD, 4 [pid 430] exit_group(0 [pid 429] ioctl(5, LOOP_SET_FD, 4 [pid 428] exit_group(0 [pid 432] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 430] <... exit_group resumed>) = ? [pid 429] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 428] <... exit_group resumed>) = ? [pid 361] <... close resumed>) = 0 [pid 432] close(5 [pid 430] +++ exited with 0 +++ [pid 429] close(5 [pid 432] <... close resumed>) = 0 [pid 432] close(4) = 0 [pid 431] ioctl(5, LOOP_SET_FD, 4 [pid 429] <... close resumed>) = 0 [pid 428] +++ exited with 0 +++ [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 432] exit_group(0 [pid 431] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 429] close(4 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=428, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 432] <... exit_group resumed>) = ? [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 432] +++ exited with 0 +++ [pid 360] <... restart_syscall resumed>) = 0 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 360] ioctl(3, LOOP_CLR_FD) = 0 [pid 360] close(3) = 0 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=432, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=430, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 434 ./strace-static-x86_64: Process 433 attached [pid 433] set_robust_list(0x5555574d4660, 24 [pid 429] <... close resumed>) = 0 [pid 431] close(5 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 433 [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 429] exit_group(0 [pid 357] <... restart_syscall resumed>) = 0 [pid 429] <... exit_group resumed>) = ? [pid 431] <... close resumed>) = 0 [pid 433] <... set_robust_list resumed>) = 0 [pid 433] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 433] setpgid(0, 0) = 0 [pid 433] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 429] +++ exited with 0 +++ [pid 431] close(4 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=429, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 357] <... openat resumed>) = 3 [pid 358] <... restart_syscall resumed>) = 0 [pid 357] ioctl(3, LOOP_CLR_FD) = 0 [pid 433] <... openat resumed>) = 3 [pid 357] close(3 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 357] <... close resumed>) = 0 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 358] <... openat resumed>) = 3 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] ioctl(3, LOOP_CLR_FD [pid 356] <... openat resumed>) = 3 [pid 433] write(3, "1000", 4) = 4 [pid 433] close(3) = 0 [pid 433] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 358] <... ioctl resumed>) = 0 [pid 356] ioctl(3, LOOP_CLR_FD [pid 433] ioctl(3, BLKSECDISCARD, [0, 0] [pid 358] close(3 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 435 [pid 356] <... ioctl resumed>) = 0 [pid 433] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 358] <... close resumed>) = 0 [pid 433] memfd_create("syzkaller", 0 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] close(3 [pid 433] <... memfd_create resumed>) = 4 [pid 433] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 431] <... close resumed>) = 0 [pid 356] <... close resumed>) = 0 [pid 431] exit_group(0 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 436 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 431] <... exit_group resumed>) = ? [pid 433] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 437 ./strace-static-x86_64: Process 434 attached [pid 431] +++ exited with 0 +++ [pid 434] set_robust_list(0x5555574d4660, 24 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=431, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 434] <... set_robust_list resumed>) = 0 ./strace-static-x86_64: Process 435 attached [pid 434] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 435] set_robust_list(0x5555574d4660, 24 [pid 434] <... prctl resumed>) = 0 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 435] <... set_robust_list resumed>) = 0 [pid 434] setpgid(0, 0 [pid 359] <... openat resumed>) = 3 [pid 435] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 434] <... setpgid resumed>) = 0 [pid 359] ioctl(3, LOOP_CLR_FD [pid 435] <... prctl resumed>) = 0 [pid 434] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 359] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 436 attached [pid 435] setpgid(0, 0 [pid 434] <... openat resumed>) = 3 [pid 433] <... write resumed>) = 262144 [pid 359] close(3 [pid 436] set_robust_list(0x5555574d4660, 24 [pid 435] <... setpgid resumed>) = 0 [pid 434] write(3, "1000", 4 [pid 359] <... close resumed>) = 0 [pid 436] <... set_robust_list resumed>) = 0 [pid 435] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 434] <... write resumed>) = 4 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 437 attached [pid 436] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 435] <... openat resumed>) = 3 [pid 434] close(3 [pid 436] <... prctl resumed>) = 0 [pid 435] write(3, "1000", 4 [pid 434] <... close resumed>) = 0 [pid 433] munmap(0x7f1bc18a3000, 138412032 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 438 [pid 437] set_robust_list(0x5555574d4660, 24 [pid 436] setpgid(0, 0 [pid 435] <... write resumed>) = 4 [pid 434] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 433] <... munmap resumed>) = 0 [pid 437] <... set_robust_list resumed>) = 0 [pid 436] <... setpgid resumed>) = 0 [pid 435] close(3 [pid 434] <... openat resumed>) = 3 [pid 433] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 437] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 436] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 435] <... close resumed>) = 0 [pid 434] ioctl(3, BLKSECDISCARD, [0, 0] [pid 433] <... openat resumed>) = 5 [pid 437] <... prctl resumed>) = 0 [pid 436] <... openat resumed>) = 3 [pid 435] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 434] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 433] ioctl(5, LOOP_SET_FD, 4 [pid 437] setpgid(0, 0 [pid 436] write(3, "1000", 4 [pid 435] <... openat resumed>) = 3 [pid 434] memfd_create("syzkaller", 0 [pid 433] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 437] <... setpgid resumed>) = 0 [pid 436] <... write resumed>) = 4 [pid 435] ioctl(3, BLKSECDISCARD, [0, 0] [pid 434] <... memfd_create resumed>) = 4 [pid 433] ioctl(5, LOOP_CLR_FD [pid 436] close(3 [pid 435] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 434] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 433] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 438 attached [pid 437] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 436] <... close resumed>) = 0 [pid 435] memfd_create("syzkaller", 0 [pid 434] <... mmap resumed>) = 0x7f1bc18a3000 [pid 438] set_robust_list(0x5555574d4660, 24 [pid 437] <... openat resumed>) = 3 [pid 436] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 435] <... memfd_create resumed>) = 4 [pid 434] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 438] <... set_robust_list resumed>) = 0 [pid 437] write(3, "1000", 4 [pid 436] <... openat resumed>) = 3 [pid 435] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 434] <... write resumed>) = 262144 [pid 438] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 437] <... write resumed>) = 4 [pid 436] ioctl(3, BLKSECDISCARD, [0, 0] [pid 435] <... mmap resumed>) = 0x7f1bc18a3000 [pid 434] munmap(0x7f1bc18a3000, 138412032 [pid 433] ioctl(5, LOOP_SET_FD, 4 [pid 438] <... prctl resumed>) = 0 [pid 437] close(3 [pid 436] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 435] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 434] <... munmap resumed>) = 0 [pid 433] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 438] setpgid(0, 0 [pid 437] <... close resumed>) = 0 [pid 436] memfd_create("syzkaller", 0 [pid 435] <... write resumed>) = 262144 [pid 434] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 433] close(5 [pid 438] <... setpgid resumed>) = 0 [pid 437] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 436] <... memfd_create resumed>) = 4 [pid 435] munmap(0x7f1bc18a3000, 138412032 [pid 434] <... openat resumed>) = 5 [pid 433] <... close resumed>) = 0 [pid 438] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 437] <... openat resumed>) = 3 [pid 436] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 435] <... munmap resumed>) = 0 [pid 434] ioctl(5, LOOP_SET_FD, 4 [pid 433] close(4 [pid 438] <... openat resumed>) = 3 [pid 437] ioctl(3, BLKSECDISCARD, [0, 0] [pid 436] <... mmap resumed>) = 0x7f1bc18a3000 [pid 435] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 434] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 433] <... close resumed>) = 0 [pid 438] write(3, "1000", 4 [pid 437] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 436] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 435] <... openat resumed>) = 5 [pid 434] ioctl(5, LOOP_CLR_FD [pid 433] exit_group(0 [pid 438] <... write resumed>) = 4 [pid 437] memfd_create("syzkaller", 0 [pid 436] <... write resumed>) = 262144 [pid 435] ioctl(5, LOOP_SET_FD, 4 [pid 434] <... ioctl resumed>) = 0 [pid 433] <... exit_group resumed>) = ? [pid 438] close(3 [pid 437] <... memfd_create resumed>) = 4 [pid 436] munmap(0x7f1bc18a3000, 138412032 [pid 435] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 433] +++ exited with 0 +++ [pid 438] <... close resumed>) = 0 [pid 437] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 436] <... munmap resumed>) = 0 [pid 435] ioctl(5, LOOP_CLR_FD [pid 436] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 435] <... ioctl resumed>) = 0 [pid 437] <... mmap resumed>) = 0x7f1bc18a3000 [pid 438] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 436] <... openat resumed>) = 5 [pid 436] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 434] ioctl(5, LOOP_SET_FD, 4 [pid 436] ioctl(5, LOOP_CLR_FD [pid 434] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 436] <... ioctl resumed>) = 0 [pid 434] close(5) = 0 [pid 434] close(4) = 0 [pid 438] <... openat resumed>) = 3 [pid 437] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 435] ioctl(5, LOOP_SET_FD, 4 [pid 434] exit_group(0 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=433, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 436] ioctl(5, LOOP_SET_FD, 4 [pid 435] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 434] <... exit_group resumed>) = ? [pid 438] ioctl(3, BLKSECDISCARD, [0, 0] [pid 436] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 435] close(5 [pid 434] +++ exited with 0 +++ [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 438] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 436] close(5 [pid 435] <... close resumed>) = 0 [pid 438] memfd_create("syzkaller", 0 [pid 436] <... close resumed>) = 0 [pid 435] close(4 [pid 361] <... openat resumed>) = 3 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=434, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 438] <... memfd_create resumed>) = 4 [pid 437] <... write resumed>) = 262144 [pid 436] close(4 [pid 435] <... close resumed>) = 0 [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 438] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 437] munmap(0x7f1bc18a3000, 138412032 [pid 436] <... close resumed>) = 0 [pid 435] exit_group(0 [pid 361] ioctl(3, LOOP_CLR_FD [pid 360] <... restart_syscall resumed>) = 0 [pid 436] exit_group(0 [pid 435] <... exit_group resumed>) = ? [pid 438] <... mmap resumed>) = 0x7f1bc18a3000 [pid 437] <... munmap resumed>) = 0 [pid 436] <... exit_group resumed>) = ? [pid 435] +++ exited with 0 +++ [pid 361] <... ioctl resumed>) = 0 [pid 436] +++ exited with 0 +++ [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 360] ioctl(3, LOOP_CLR_FD) = 0 [pid 360] close(3) = 0 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555574d4650) = 439 [pid 438] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 361] close(3 [pid 437] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 439 attached [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=435, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 361] <... close resumed>) = 0 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=436, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 437] <... openat resumed>) = 5 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 439] set_robust_list(0x5555574d4660, 24) = 0 [pid 439] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 439] setpgid(0, 0) = 0 [pid 439] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 439] write(3, "1000", 4 [pid 358] <... restart_syscall resumed>) = 0 [pid 357] <... restart_syscall resumed>) = 0 [pid 439] <... write resumed>) = 4 [pid 439] close(3) = 0 [pid 439] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 439] ioctl(3, BLKSECDISCARD, [0, 0] [pid 437] ioctl(5, LOOP_SET_FD, 4 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 440 [pid 439] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 439] memfd_create("syzkaller", 0 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 437] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 358] <... openat resumed>) = 3 [pid 437] ioctl(5, LOOP_CLR_FD [pid 357] <... openat resumed>) = 3 [pid 358] ioctl(3, LOOP_CLR_FD [pid 357] ioctl(3, LOOP_CLR_FD [pid 358] <... ioctl resumed>) = 0 [pid 437] <... ioctl resumed>) = 0 [pid 358] close(3 [pid 357] <... ioctl resumed>) = 0 [pid 358] <... close resumed>) = 0 [pid 357] close(3 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 357] <... close resumed>) = 0 [pid 439] <... memfd_create resumed>) = 4 [pid 439] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 441 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 442 [pid 437] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 437] close(5) = 0 [pid 437] close(4 [pid 438] <... write resumed>) = 262144 [pid 437] <... close resumed>) = 0 [pid 438] munmap(0x7f1bc18a3000, 138412032 [pid 437] exit_group(0) = ? ./strace-static-x86_64: Process 440 attached [pid 440] set_robust_list(0x5555574d4660, 24) = 0 [pid 440] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 437] +++ exited with 0 +++ [pid 440] <... prctl resumed>) = 0 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=437, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 440] setpgid(0, 0) = 0 [pid 356] <... restart_syscall resumed>) = 0 [pid 438] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 442 attached ./strace-static-x86_64: Process 441 attached [pid 440] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 439] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 440] <... openat resumed>) = 3 [pid 438] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 438] <... openat resumed>) = 5 [pid 356] <... openat resumed>) = 3 [pid 440] write(3, "1000", 4 [pid 438] ioctl(5, LOOP_SET_FD, 4 [pid 356] ioctl(3, LOOP_CLR_FD [pid 440] <... write resumed>) = 4 [pid 440] close(3) = 0 [pid 440] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 438] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] <... ioctl resumed>) = 0 [pid 440] <... openat resumed>) = 3 [pid 438] ioctl(5, LOOP_CLR_FD [pid 356] close(3) = 0 [pid 438] <... ioctl resumed>) = 0 [pid 440] ioctl(3, BLKSECDISCARD, [0, 0] [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 440] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 440] memfd_create("syzkaller", 0) = 4 [pid 440] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 443 [pid 438] ioctl(5, LOOP_SET_FD, 4 [pid 439] <... write resumed>) = 262144 [pid 438] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 438] close(5) = 0 [pid 438] close(4 [pid 441] set_robust_list(0x5555574d4660, 24) = 0 [pid 441] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 441] setpgid(0, 0 [pid 438] <... close resumed>) = 0 [pid 441] <... setpgid resumed>) = 0 [pid 438] exit_group(0 [pid 441] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 438] <... exit_group resumed>) = ? [pid 441] <... openat resumed>) = 3 [pid 439] munmap(0x7f1bc18a3000, 138412032 [pid 441] write(3, "1000", 4) = 4 [pid 440] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 438] +++ exited with 0 +++ [pid 439] <... munmap resumed>) = 0 [pid 441] close(3 [pid 439] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=438, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 441] <... close resumed>) = 0 [pid 439] <... openat resumed>) = 5 [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 441] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 439] ioctl(5, LOOP_SET_FD, 4 [pid 359] <... restart_syscall resumed>) = 0 [pid 441] <... openat resumed>) = 3 [pid 439] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 441] ioctl(3, BLKSECDISCARD, [0, 0] [pid 439] ioctl(5, LOOP_CLR_FD [pid 441] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 439] <... ioctl resumed>) = 0 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 441] memfd_create("syzkaller", 0 [pid 359] <... openat resumed>) = 3 [pid 441] <... memfd_create resumed>) = 4 [pid 359] ioctl(3, LOOP_CLR_FD [pid 441] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 359] <... ioctl resumed>) = 0 [pid 441] <... mmap resumed>) = 0x7f1bc18a3000 [pid 359] close(3 [pid 441] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 359] <... close resumed>) = 0 [pid 442] set_robust_list(0x5555574d4660, 24 [pid 439] ioctl(5, LOOP_SET_FD, 4 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 442] <... set_robust_list resumed>) = 0 [pid 439] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 442] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 439] close(5 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 444 [pid 442] <... prctl resumed>) = 0 [pid 439] <... close resumed>) = 0 [pid 442] setpgid(0, 0 [pid 439] close(4 [pid 442] <... setpgid resumed>) = 0 [pid 439] <... close resumed>) = 0 [pid 442] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 439] exit_group(0 [pid 442] <... openat resumed>) = 3 [pid 440] <... write resumed>) = 262144 [pid 439] <... exit_group resumed>) = ? [pid 442] write(3, "1000", 4 [pid 439] +++ exited with 0 +++ ./strace-static-x86_64: Process 443 attached [pid 442] <... write resumed>) = 4 [pid 441] <... write resumed>) = 262144 [pid 440] munmap(0x7f1bc18a3000, 138412032 [pid 443] set_robust_list(0x5555574d4660, 24 [pid 442] close(3 [pid 440] <... munmap resumed>) = 0 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=439, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 442] <... close resumed>) = 0 [pid 440] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 443] <... set_robust_list resumed>) = 0 [pid 442] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 440] <... openat resumed>) = 5 [pid 360] <... restart_syscall resumed>) = 0 [pid 442] <... openat resumed>) = 3 [pid 440] ioctl(5, LOOP_SET_FD, 4 [pid 442] ioctl(3, BLKSECDISCARD, [0, 0] [pid 443] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 440] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 442] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 440] ioctl(5, LOOP_CLR_FD [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 443] <... prctl resumed>) = 0 [pid 442] memfd_create("syzkaller", 0 [pid 441] munmap(0x7f1bc18a3000, 138412032 [pid 440] <... ioctl resumed>) = 0 [pid 360] <... openat resumed>) = 3 ./strace-static-x86_64: Process 444 attached [pid 443] setpgid(0, 0 [pid 442] <... memfd_create resumed>) = 4 [pid 441] <... munmap resumed>) = 0 [pid 360] ioctl(3, LOOP_CLR_FD [pid 442] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 441] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 360] <... ioctl resumed>) = 0 [pid 442] <... mmap resumed>) = 0x7f1bc18a3000 [pid 441] <... openat resumed>) = 5 [pid 360] close(3 [pid 443] <... setpgid resumed>) = 0 [pid 444] set_robust_list(0x5555574d4660, 24 [pid 442] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 441] ioctl(5, LOOP_SET_FD, 4 [pid 360] <... close resumed>) = 0 [pid 444] <... set_robust_list resumed>) = 0 [pid 443] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 441] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 440] ioctl(5, LOOP_SET_FD, 4 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 444] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 443] <... openat resumed>) = 3 [pid 441] ioctl(5, LOOP_CLR_FD [pid 440] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 444] <... prctl resumed>) = 0 [pid 443] write(3, "1000", 4 [pid 442] <... write resumed>) = 262144 [pid 441] <... ioctl resumed>) = 0 [pid 440] close(5 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 445 [pid 440] <... close resumed>) = 0 [pid 440] close(4 [pid 444] setpgid(0, 0 [pid 443] <... write resumed>) = 4 [pid 440] <... close resumed>) = 0 [pid 442] munmap(0x7f1bc18a3000, 138412032 [pid 441] ioctl(5, LOOP_SET_FD, 4 [pid 440] exit_group(0 [pid 444] <... setpgid resumed>) = 0 [pid 443] close(3 [pid 442] <... munmap resumed>) = 0 [pid 441] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 440] <... exit_group resumed>) = ? [pid 444] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 443] <... close resumed>) = 0 [pid 442] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 441] close(5 [pid 440] +++ exited with 0 +++ [pid 442] <... openat resumed>) = 5 [pid 441] <... close resumed>) = 0 [pid 443] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 442] ioctl(5, LOOP_SET_FD, 4 [pid 441] close(4 [pid 444] <... openat resumed>) = 3 [pid 443] <... openat resumed>) = 3 [pid 442] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 441] <... close resumed>) = 0 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=440, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 442] ioctl(5, LOOP_CLR_FD [pid 441] exit_group(0./strace-static-x86_64: Process 445 attached [pid 444] write(3, "1000", 4 [pid 443] ioctl(3, BLKSECDISCARD, [0, 0] [pid 442] <... ioctl resumed>) = 0 [pid 441] <... exit_group resumed>) = ? [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 445] set_robust_list(0x5555574d4660, 24 [pid 444] <... write resumed>) = 4 [pid 443] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 441] +++ exited with 0 +++ [pid 361] <... restart_syscall resumed>) = 0 [pid 445] <... set_robust_list resumed>) = 0 [pid 445] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 444] close(3 [pid 443] memfd_create("syzkaller", 0 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=441, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 445] <... prctl resumed>) = 0 [pid 445] setpgid(0, 0) = 0 [pid 445] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 444] <... close resumed>) = 0 [pid 443] <... memfd_create resumed>) = 4 [pid 445] write(3, "1000", 4 [pid 442] ioctl(5, LOOP_SET_FD, 4 [pid 445] <... write resumed>) = 4 [pid 442] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 445] close(3 [pid 442] close(5 [pid 445] <... close resumed>) = 0 [pid 444] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 443] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 442] <... close resumed>) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 445] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 442] close(4 [pid 445] <... openat resumed>) = 3 [pid 444] <... openat resumed>) = 3 [pid 443] <... mmap resumed>) = 0x7f1bc18a3000 [pid 442] <... close resumed>) = 0 [pid 361] <... openat resumed>) = 3 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 445] ioctl(3, BLKSECDISCARD, [0, 0] [pid 442] exit_group(0 [pid 445] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 444] ioctl(3, BLKSECDISCARD, [0, 0] [pid 442] <... exit_group resumed>) = ? [pid 445] memfd_create("syzkaller", 0 [pid 442] +++ exited with 0 +++ [pid 445] <... memfd_create resumed>) = 4 [pid 445] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 445] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 444] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 443] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 361] ioctl(3, LOOP_CLR_FD [pid 358] <... openat resumed>) = 3 [pid 357] --- 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] <... write resumed>) = 262144 [pid 444] memfd_create("syzkaller", 0 [pid 361] <... ioctl resumed>) = 0 [pid 358] ioctl(3, LOOP_CLR_FD [pid 445] munmap(0x7f1bc18a3000, 138412032) = 0 [pid 444] <... memfd_create resumed>) = 4 [pid 443] <... write resumed>) = 262144 [pid 361] close(3 [pid 358] <... ioctl resumed>) = 0 [pid 445] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 5 [pid 445] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 445] ioctl(5, LOOP_CLR_FD) = 0 [pid 444] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 443] munmap(0x7f1bc18a3000, 138412032 [pid 361] <... close resumed>) = 0 [pid 358] close(3 [pid 444] <... mmap resumed>) = 0x7f1bc18a3000 [pid 443] <... munmap resumed>) = 0 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] <... close resumed>) = 0 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 445] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 445] close(5) = 0 [pid 445] close(4) = 0 [pid 444] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 443] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 357] <... openat resumed>) = 3 [pid 445] exit_group(0 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 446 [pid 445] <... exit_group resumed>) = ? [pid 445] +++ exited with 0 +++ [pid 357] ioctl(3, LOOP_CLR_FD [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=445, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] <... ioctl resumed>) = 0 [pid 443] <... openat resumed>) = 5 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 447 [pid 357] close(3 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 443] ioctl(5, LOOP_SET_FD, 4 [pid 357] <... close resumed>) = 0 ./strace-static-x86_64: Process 447 attached ./strace-static-x86_64: Process 446 attached [pid 444] <... write resumed>) = 262144 [pid 443] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] <... openat resumed>) = 3 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 447] set_robust_list(0x5555574d4660, 24 [pid 446] set_robust_list(0x5555574d4660, 24 [pid 444] munmap(0x7f1bc18a3000, 138412032 [pid 443] ioctl(5, LOOP_CLR_FD [pid 360] ioctl(3, LOOP_CLR_FD [pid 447] <... set_robust_list resumed>) = 0 [pid 446] <... set_robust_list resumed>) = 0 [pid 444] <... munmap resumed>) = 0 [pid 443] <... ioctl resumed>) = 0 [pid 360] <... ioctl resumed>) = 0 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 448 [pid 447] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 446] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 444] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 360] close(3 [pid 447] <... prctl resumed>) = 0 [pid 446] <... prctl resumed>) = 0 [pid 444] <... openat resumed>) = 5 [pid 360] <... close resumed>) = 0 [pid 447] setpgid(0, 0 [pid 446] setpgid(0, 0 [pid 444] ioctl(5, LOOP_SET_FD, 4 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 447] <... setpgid resumed>) = 0 [pid 446] <... setpgid resumed>) = 0 [pid 444] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 443] ioctl(5, LOOP_SET_FD, 4 [pid 447] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 446] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 444] ioctl(5, LOOP_CLR_FD [pid 443] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 447] <... openat resumed>) = 3 [pid 446] <... openat resumed>) = 3 [pid 444] <... ioctl resumed>) = 0 [pid 443] close(5 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 449 [pid 447] write(3, "1000", 4 [pid 446] write(3, "1000", 4 [pid 443] <... close resumed>) = 0 [pid 447] <... write resumed>) = 4 [pid 446] <... write resumed>) = 4 [pid 443] close(4./strace-static-x86_64: Process 449 attached [pid 447] close(3 [pid 446] close(3 [pid 443] <... close resumed>) = 0 [pid 447] <... close resumed>) = 0 [pid 446] <... close resumed>) = 0 [pid 444] ioctl(5, LOOP_SET_FD, 4 [pid 443] exit_group(0./strace-static-x86_64: Process 448 attached [pid 449] set_robust_list(0x5555574d4660, 24 [pid 447] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 446] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 444] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 443] <... exit_group resumed>) = ? [pid 449] <... set_robust_list resumed>) = 0 [pid 448] set_robust_list(0x5555574d4660, 24 [pid 447] <... openat resumed>) = 3 [pid 446] <... openat resumed>) = 3 [pid 444] close(5 [pid 443] +++ exited with 0 +++ [pid 449] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 448] <... set_robust_list resumed>) = 0 [pid 447] ioctl(3, BLKSECDISCARD, [0, 0] [pid 446] ioctl(3, BLKSECDISCARD, [0, 0] [pid 444] <... close resumed>) = 0 [pid 449] <... prctl resumed>) = 0 [pid 448] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 447] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 446] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 444] close(4 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=443, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 449] setpgid(0, 0 [pid 448] <... prctl resumed>) = 0 [pid 447] memfd_create("syzkaller", 0 [pid 446] memfd_create("syzkaller", 0 [pid 444] <... close resumed>) = 0 [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 449] <... setpgid resumed>) = 0 [pid 448] setpgid(0, 0 [pid 447] <... memfd_create resumed>) = 4 [pid 446] <... memfd_create resumed>) = 4 [pid 444] exit_group(0 [pid 356] <... restart_syscall resumed>) = 0 [pid 449] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 448] <... setpgid resumed>) = 0 [pid 447] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 446] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 444] <... exit_group resumed>) = ? [pid 449] <... openat resumed>) = 3 [pid 448] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 447] <... mmap resumed>) = 0x7f1bc18a3000 [pid 446] <... mmap resumed>) = 0x7f1bc18a3000 [pid 444] +++ exited with 0 +++ [pid 449] write(3, "1000", 4 [pid 448] <... openat resumed>) = 3 [pid 447] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 446] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=444, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 449] <... write resumed>) = 4 [pid 448] write(3, "1000", 4 [pid 447] <... write resumed>) = 262144 [pid 446] <... write resumed>) = 262144 [pid 356] <... openat resumed>) = 3 [pid 449] close(3 [pid 448] <... write resumed>) = 4 [pid 447] munmap(0x7f1bc18a3000, 138412032 [pid 446] munmap(0x7f1bc18a3000, 138412032 [pid 356] ioctl(3, LOOP_CLR_FD [pid 449] <... close resumed>) = 0 [pid 448] close(3 [pid 447] <... munmap resumed>) = 0 [pid 446] <... munmap resumed>) = 0 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 356] <... ioctl resumed>) = 0 [pid 449] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 448] <... close resumed>) = 0 [pid 447] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 446] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 356] close(3 [pid 449] <... openat resumed>) = 3 [pid 448] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 447] <... openat resumed>) = 5 [pid 446] <... openat resumed>) = 5 [pid 359] <... openat resumed>) = 3 [pid 356] <... close resumed>) = 0 [pid 449] ioctl(3, BLKSECDISCARD, [0, 0] [pid 448] <... openat resumed>) = 3 [pid 447] ioctl(5, LOOP_SET_FD, 4 [pid 446] ioctl(5, LOOP_SET_FD, 4 [pid 359] ioctl(3, LOOP_CLR_FD [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 449] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 448] ioctl(3, BLKSECDISCARD, [0, 0] [pid 447] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 446] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] <... ioctl resumed>) = 0 [pid 449] memfd_create("syzkaller", 0 [pid 448] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 447] ioctl(5, LOOP_CLR_FD [pid 446] ioctl(5, LOOP_CLR_FD [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 450 [pid 449] <... memfd_create resumed>) = 4 [pid 448] memfd_create("syzkaller", 0 [pid 447] <... ioctl resumed>) = 0 [pid 446] <... ioctl resumed>) = 0 [pid 359] close(3 [pid 449] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 448] <... memfd_create resumed>) = 4 [pid 359] <... close resumed>) = 0 [pid 449] <... mmap resumed>) = 0x7f1bc18a3000 [pid 448] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 448] <... mmap resumed>) = 0x7f1bc18a3000 [pid 449] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 448] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 449] <... write resumed>) = 262144 [pid 448] <... write resumed>) = 262144 [pid 447] ioctl(5, LOOP_SET_FD, 4 [pid 446] ioctl(5, LOOP_SET_FD, 4 [pid 449] munmap(0x7f1bc18a3000, 138412032 [pid 448] munmap(0x7f1bc18a3000, 138412032 [pid 447] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 446] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 451 [pid 449] <... munmap resumed>) = 0 [pid 448] <... munmap resumed>) = 0 [pid 447] close(5 [pid 446] close(5 [pid 449] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 448] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 447] <... close resumed>) = 0 [pid 446] <... close resumed>) = 0 ./strace-static-x86_64: Process 450 attached [pid 449] <... openat resumed>) = 5 [pid 448] <... openat resumed>) = 5 [pid 447] close(4 [pid 446] close(4 [pid 449] ioctl(5, LOOP_SET_FD, 4 [pid 448] ioctl(5, LOOP_SET_FD, 4 [pid 447] <... close resumed>) = 0 [pid 446] <... close resumed>) = 0 [pid 450] set_robust_list(0x5555574d4660, 24 [pid 449] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 448] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 447] exit_group(0 [pid 446] exit_group(0 [pid 450] <... set_robust_list resumed>) = 0 [pid 449] ioctl(5, LOOP_CLR_FD [pid 448] ioctl(5, LOOP_CLR_FD [pid 447] <... exit_group resumed>) = ? [pid 446] <... exit_group resumed>) = ? [pid 450] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 449] <... ioctl resumed>) = 0 [pid 448] <... ioctl resumed>) = 0 [pid 447] +++ exited with 0 +++ [pid 446] +++ exited with 0 +++ [pid 450] <... prctl resumed>) = 0 [pid 450] setpgid(0, 0 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=446, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=447, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 450] <... setpgid resumed>) = 0 [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 450] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 451 attached [pid 361] <... restart_syscall resumed>) = 0 [pid 358] <... restart_syscall resumed>) = 0 [pid 451] set_robust_list(0x5555574d4660, 24 [pid 450] <... openat resumed>) = 3 [pid 451] <... set_robust_list resumed>) = 0 [pid 450] write(3, "1000", 4 [pid 449] ioctl(5, LOOP_SET_FD, 4 [pid 448] ioctl(5, LOOP_SET_FD, 4 [pid 451] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 450] <... write resumed>) = 4 [pid 449] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 448] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 451] <... prctl resumed>) = 0 [pid 450] close(3 [pid 449] close(5 [pid 448] close(5 [pid 361] <... openat resumed>) = 3 [pid 358] <... openat resumed>) = 3 [pid 451] setpgid(0, 0 [pid 450] <... close resumed>) = 0 [pid 449] <... close resumed>) = 0 [pid 448] <... close resumed>) = 0 [pid 361] ioctl(3, LOOP_CLR_FD [pid 358] ioctl(3, LOOP_CLR_FD [pid 451] <... setpgid resumed>) = 0 [pid 450] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 449] close(4 [pid 448] close(4 [pid 361] <... ioctl resumed>) = 0 [pid 358] <... ioctl resumed>) = 0 [pid 451] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 450] <... openat resumed>) = 3 [pid 448] <... close resumed>) = 0 [pid 361] close(3 [pid 358] close(3 [pid 449] <... close resumed>) = 0 [pid 451] <... openat resumed>) = 3 [pid 450] ioctl(3, BLKSECDISCARD, [0, 0] [pid 448] exit_group(0 [pid 361] <... close resumed>) = 0 [pid 358] <... close resumed>) = 0 [pid 451] write(3, "1000", 4 [pid 450] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 449] exit_group(0 [pid 448] <... exit_group resumed>) = ? [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 451] <... write resumed>) = 4 [pid 450] memfd_create("syzkaller", 0 [pid 449] <... exit_group resumed>) = ? [pid 448] +++ exited with 0 +++ [pid 451] close(3 [pid 450] <... memfd_create resumed>) = 4 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 452 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 453 [pid 451] <... close resumed>) = 0 [pid 449] +++ exited with 0 +++ [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=448, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 451] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 450] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 451] <... openat resumed>) = 3 [pid 450] <... mmap resumed>) = 0x7f1bc18a3000 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=449, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] <... openat resumed>) = 3 [pid 451] ioctl(3, BLKSECDISCARD, [0, 0] [pid 357] ioctl(3, LOOP_CLR_FD [pid 451] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 357] <... ioctl resumed>) = 0 [pid 451] memfd_create("syzkaller", 0 [pid 357] close(3 [pid 451] <... memfd_create resumed>) = 4 [pid 357] <... close resumed>) = 0 [pid 451] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 451] <... mmap resumed>) = 0x7f1bc18a3000 [pid 450] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 360] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 452 attached [pid 451] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 454 [pid 452] set_robust_list(0x5555574d4660, 24 [pid 451] <... write resumed>) = 262144 [pid 450] <... write resumed>) = 262144 [pid 360] <... restart_syscall resumed>) = 0 [pid 452] <... set_robust_list resumed>) = 0 [pid 451] munmap(0x7f1bc18a3000, 138412032 [pid 450] munmap(0x7f1bc18a3000, 138412032 [pid 451] <... munmap resumed>) = 0 [pid 450] <... munmap resumed>) = 0 [pid 452] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 451] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 450] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 452] <... prctl resumed>) = 0 [pid 451] <... openat resumed>) = 5 [pid 450] <... openat resumed>) = 5 [pid 452] setpgid(0, 0 [pid 451] ioctl(5, LOOP_SET_FD, 4 [pid 450] ioctl(5, LOOP_SET_FD, 4 [pid 360] <... openat resumed>) = 3 [pid 452] <... setpgid resumed>) = 0 [pid 451] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 450] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] ioctl(3, LOOP_CLR_FD [pid 452] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 451] ioctl(5, LOOP_CLR_FD [pid 450] ioctl(5, LOOP_CLR_FD [pid 360] <... ioctl resumed>) = 0 [pid 452] <... openat resumed>) = 3 [pid 451] <... ioctl resumed>) = 0 [pid 450] <... ioctl resumed>) = 0 [pid 360] close(3./strace-static-x86_64: Process 453 attached [pid 452] write(3, "1000", 4 [pid 360] <... close resumed>) = 0 [pid 453] set_robust_list(0x5555574d4660, 24 [pid 452] <... write resumed>) = 4 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 453] <... set_robust_list resumed>) = 0 [pid 452] close(3 [pid 453] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 453] setpgid(0, 0 [pid 452] <... close resumed>) = 0 [pid 451] ioctl(5, LOOP_SET_FD, 4 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 455 ./strace-static-x86_64: Process 454 attached [pid 453] <... setpgid resumed>) = 0 [pid 452] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 451] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 450] ioctl(5, LOOP_SET_FD, 4 [pid 454] set_robust_list(0x5555574d4660, 24 [pid 453] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 452] <... openat resumed>) = 3 [pid 451] close(5 [pid 450] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 454] <... set_robust_list resumed>) = 0 [pid 453] <... openat resumed>) = 3 [pid 452] ioctl(3, BLKSECDISCARD, [0, 0] [pid 451] <... close resumed>) = 0 [pid 450] close(5 [pid 454] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 453] write(3, "1000", 4 [pid 452] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 451] close(4 [pid 450] <... close resumed>) = 0 [pid 454] <... prctl resumed>) = 0 [pid 453] <... write resumed>) = 4 [pid 452] memfd_create("syzkaller", 0 [pid 451] <... close resumed>) = 0 [pid 450] close(4 [pid 454] setpgid(0, 0 [pid 453] close(3 [pid 452] <... memfd_create resumed>) = 4 [pid 451] exit_group(0 [pid 454] <... setpgid resumed>) = 0 [pid 453] <... close resumed>) = 0 [pid 451] <... exit_group resumed>) = ? [pid 454] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 453] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 452] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 451] +++ exited with 0 +++ [pid 450] <... close resumed>) = 0 [pid 454] <... openat resumed>) = 3 [pid 453] <... openat resumed>) = 3 [pid 452] <... mmap resumed>) = 0x7f1bc18a3000 [pid 450] exit_group(0 [pid 454] write(3, "1000", 4 [pid 453] ioctl(3, BLKSECDISCARD, [0, 0] [pid 454] <... write resumed>) = 4 [pid 453] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 454] close(3 [pid 453] memfd_create("syzkaller", 0 [pid 454] <... close resumed>) = 0 [pid 453] <... memfd_create resumed>) = 4 ./strace-static-x86_64: Process 455 attached [pid 454] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 453] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 455] set_robust_list(0x5555574d4660, 24 [pid 454] <... openat resumed>) = 3 [pid 453] <... mmap resumed>) = 0x7f1bc18a3000 [pid 452] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 450] <... exit_group resumed>) = ? [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=451, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 455] <... set_robust_list resumed>) = 0 [pid 454] ioctl(3, BLKSECDISCARD, [0, 0] [pid 453] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 455] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 454] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 453] <... write resumed>) = 262144 [pid 455] <... prctl resumed>) = 0 [pid 454] memfd_create("syzkaller", 0 [pid 453] munmap(0x7f1bc18a3000, 138412032 [pid 455] setpgid(0, 0 [pid 454] <... memfd_create resumed>) = 4 [pid 453] <... munmap resumed>) = 0 [pid 450] +++ exited with 0 +++ [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 455] <... setpgid resumed>) = 0 [pid 454] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 453] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=450, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 455] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 454] <... mmap resumed>) = 0x7f1bc18a3000 [pid 453] <... openat resumed>) = 5 [pid 455] <... openat resumed>) = 3 [pid 454] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 453] ioctl(5, LOOP_SET_FD, 4 [pid 452] <... write resumed>) = 262144 [pid 359] <... openat resumed>) = 3 [pid 455] write(3, "1000", 4 [pid 454] <... write resumed>) = 262144 [pid 453] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 452] munmap(0x7f1bc18a3000, 138412032 [pid 359] ioctl(3, LOOP_CLR_FD [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 455] <... write resumed>) = 4 [pid 454] munmap(0x7f1bc18a3000, 138412032 [pid 453] ioctl(5, LOOP_CLR_FD [pid 452] <... munmap resumed>) = 0 [pid 359] <... ioctl resumed>) = 0 [pid 356] <... openat resumed>) = 3 [pid 455] close(3 [pid 454] <... munmap resumed>) = 0 [pid 453] <... ioctl resumed>) = 0 [pid 452] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 359] close(3 [pid 356] ioctl(3, LOOP_CLR_FD [pid 455] <... close resumed>) = 0 [pid 454] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 452] <... openat resumed>) = 5 [pid 359] <... close resumed>) = 0 [pid 356] <... ioctl resumed>) = 0 [pid 455] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 454] <... openat resumed>) = 5 [pid 452] ioctl(5, LOOP_SET_FD, 4 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] close(3 [pid 455] <... openat resumed>) = 3 [pid 454] ioctl(5, LOOP_SET_FD, 4 [pid 452] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] <... close resumed>) = 0 [pid 455] ioctl(3, BLKSECDISCARD, [0, 0] [pid 454] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 452] ioctl(5, LOOP_CLR_FD [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 455] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 454] ioctl(5, LOOP_CLR_FD [pid 453] ioctl(5, LOOP_SET_FD, 4 [pid 452] <... ioctl resumed>) = 0 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 456 [pid 455] memfd_create("syzkaller", 0 [pid 454] <... ioctl resumed>) = 0 [pid 453] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 457 [pid 455] <... memfd_create resumed>) = 4 [pid 453] close(5 [pid 455] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 453] <... close resumed>) = 0 [pid 455] <... mmap resumed>) = 0x7f1bc18a3000 [pid 453] close(4 [pid 455] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 453] <... close resumed>) = 0 ./strace-static-x86_64: Process 457 attached [pid 455] <... write resumed>) = 262144 [pid 454] ioctl(5, LOOP_SET_FD, 4 [pid 453] exit_group(0 [pid 452] ioctl(5, LOOP_SET_FD, 4 [pid 457] set_robust_list(0x5555574d4660, 24 [pid 455] munmap(0x7f1bc18a3000, 138412032 [pid 454] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 453] <... exit_group resumed>) = ? [pid 457] <... set_robust_list resumed>) = 0 [pid 455] <... munmap resumed>) = 0 [pid 454] close(5 [pid 453] +++ exited with 0 +++ [pid 452] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 457] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 455] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 454] <... close resumed>) = 0 [pid 452] close(5 [pid 457] <... prctl resumed>) = 0 [pid 455] <... openat resumed>) = 5 [pid 454] close(4 [pid 452] <... close resumed>) = 0 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=453, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 457] setpgid(0, 0 [pid 455] ioctl(5, LOOP_SET_FD, 4 [pid 454] <... close resumed>) = 0 [pid 452] close(4 [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 457] <... setpgid resumed>) = 0 [pid 455] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 454] exit_group(0 [pid 358] <... restart_syscall resumed>) = 0 [pid 455] ioctl(5, LOOP_CLR_FD [pid 454] <... exit_group resumed>) = ? [pid 457] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 455] <... ioctl resumed>) = 0 [pid 454] +++ exited with 0 +++ [pid 452] <... close resumed>) = 0 [pid 457] <... openat resumed>) = 3 [pid 452] exit_group(0 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR./strace-static-x86_64: Process 456 attached [pid 457] write(3, "1000", 4 [pid 452] <... exit_group resumed>) = ? [pid 358] <... openat resumed>) = 3 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=454, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 457] <... write resumed>) = 4 [pid 456] set_robust_list(0x5555574d4660, 24 [pid 358] ioctl(3, LOOP_CLR_FD [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 457] close(3 [pid 456] <... set_robust_list resumed>) = 0 [pid 452] +++ exited with 0 +++ [pid 358] <... ioctl resumed>) = 0 [pid 357] <... restart_syscall resumed>) = 0 [pid 457] <... close resumed>) = 0 [pid 456] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 455] ioctl(5, LOOP_SET_FD, 4 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=452, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] close(3 [pid 457] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 456] <... prctl resumed>) = 0 [pid 455] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 358] <... close resumed>) = 0 [pid 457] <... openat resumed>) = 3 [pid 456] setpgid(0, 0 [pid 455] close(5 [pid 361] <... restart_syscall resumed>) = 0 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 457] ioctl(3, BLKSECDISCARD, [0, 0] [pid 456] <... setpgid resumed>) = 0 [pid 455] <... close resumed>) = 0 [pid 357] <... openat resumed>) = 3 [pid 457] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 456] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 455] close(4 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 459 [pid 357] ioctl(3, LOOP_CLR_FD [pid 457] memfd_create("syzkaller", 0 [pid 456] <... openat resumed>) = 3 [pid 455] <... close resumed>) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 357] <... ioctl resumed>) = 0 [pid 457] <... memfd_create resumed>) = 4 [pid 456] write(3, "1000", 4 [pid 455] exit_group(0 [pid 361] <... openat resumed>) = 3 [pid 357] close(3 [pid 457] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 456] <... write resumed>) = 4 [pid 455] <... exit_group resumed>) = ? [pid 361] ioctl(3, LOOP_CLR_FD [pid 357] <... close resumed>) = 0 ./strace-static-x86_64: Process 459 attached [pid 457] <... mmap resumed>) = 0x7f1bc18a3000 [pid 456] close(3 [pid 455] +++ exited with 0 +++ [pid 361] <... ioctl resumed>) = 0 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 456] <... close resumed>) = 0 [pid 361] close(3 [pid 456] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 361] <... close resumed>) = 0 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 460 [pid 456] <... openat resumed>) = 3 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 459] set_robust_list(0x5555574d4660, 24 [pid 457] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 456] ioctl(3, BLKSECDISCARD, [0, 0] [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=455, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 456] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 461 [pid 456] memfd_create("syzkaller", 0) = 4 [pid 459] <... set_robust_list resumed>) = 0 [pid 457] <... write resumed>) = 262144 [pid 456] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 459] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 457] munmap(0x7f1bc18a3000, 138412032 [pid 456] <... mmap resumed>) = 0x7f1bc18a3000 [pid 459] <... prctl resumed>) = 0 [pid 457] <... munmap resumed>) = 0 [pid 456] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 461 attached [pid 459] setpgid(0, 0 [pid 457] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 456] <... write resumed>) = 262144 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 461] set_robust_list(0x5555574d4660, 24 [pid 459] <... setpgid resumed>) = 0 [pid 457] <... openat resumed>) = 5 [pid 456] munmap(0x7f1bc18a3000, 138412032 [pid 360] <... openat resumed>) = 3 [pid 461] <... set_robust_list resumed>) = 0 [pid 459] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 457] ioctl(5, LOOP_SET_FD, 4 [pid 456] <... munmap resumed>) = 0 [pid 360] ioctl(3, LOOP_CLR_FD [pid 459] <... openat resumed>) = 3 [pid 457] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 456] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 360] <... ioctl resumed>) = 0 [pid 461] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 459] write(3, "1000", 4 [pid 457] ioctl(5, LOOP_CLR_FD [pid 456] <... openat resumed>) = 5 [pid 360] close(3 [pid 461] <... prctl resumed>) = 0 [pid 459] <... write resumed>) = 4 [pid 457] <... ioctl resumed>) = 0 [pid 461] setpgid(0, 0 [pid 459] close(3 [pid 456] ioctl(5, LOOP_SET_FD, 4 [pid 360] <... close resumed>) = 0 [pid 461] <... setpgid resumed>) = 0 [pid 459] <... close resumed>) = 0 [pid 456] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 461] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 459] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 456] ioctl(5, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 460 attached [pid 459] <... openat resumed>) = 3 [pid 460] set_robust_list(0x5555574d4660, 24 [pid 459] ioctl(3, BLKSECDISCARD, [0, 0] [pid 457] ioctl(5, LOOP_SET_FD, 4 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 462 [pid 459] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 457] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 460] <... set_robust_list resumed>) = 0 [pid 459] memfd_create("syzkaller", 0 [pid 461] <... openat resumed>) = 3 [pid 457] close(5 [pid 461] write(3, "1000", 4 [pid 460] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 459] <... memfd_create resumed>) = 4 [pid 457] <... close resumed>) = 0 [pid 461] <... write resumed>) = 4 [pid 460] <... prctl resumed>) = 0 [pid 459] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 457] close(4 [pid 456] ioctl(5, LOOP_SET_FD, 4 [pid 461] close(3 [pid 460] setpgid(0, 0 [pid 459] <... mmap resumed>) = 0x7f1bc18a3000 [pid 456] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 460] <... setpgid resumed>) = 0 [pid 456] close(5 [pid 460] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 456] <... close resumed>) = 0 [pid 460] <... openat resumed>) = 3 [pid 457] <... close resumed>) = 0 [pid 456] close(4 [pid 460] write(3, "1000", 4 [pid 456] <... close resumed>) = 0 [pid 461] <... close resumed>) = 0 [pid 460] <... write resumed>) = 4 [pid 459] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 457] exit_group(0 [pid 456] exit_group(0 [pid 460] close(3 [pid 457] <... exit_group resumed>) = ? [pid 456] <... exit_group resumed>) = ? [pid 460] <... close resumed>) = 0 [pid 456] +++ exited with 0 +++ [pid 460] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 459] <... write resumed>) = 262144 [pid 460] <... openat resumed>) = 3 [pid 460] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 460] memfd_create("syzkaller", 0 [pid 461] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 460] <... memfd_create resumed>) = 4 [pid 459] munmap(0x7f1bc18a3000, 138412032 [pid 457] +++ exited with 0 +++ [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=456, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 461] <... openat resumed>) = 3 [pid 460] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 459] <... munmap resumed>) = 0 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=457, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 461] ioctl(3, BLKSECDISCARD, [0, 0] [pid 460] <... mmap resumed>) = 0x7f1bc18a3000 [pid 459] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 359] <... openat resumed>) = 3 [pid 461] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 460] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 459] <... openat resumed>) = 5 [pid 359] ioctl(3, LOOP_CLR_FD [pid 461] memfd_create("syzkaller", 0 [pid 459] ioctl(5, LOOP_SET_FD, 4 [pid 359] <... ioctl resumed>) = 0 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 461] <... memfd_create resumed>) = 4 [pid 459] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] close(3 [pid 356] <... openat resumed>) = 3 [pid 461] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 460] <... write resumed>) = 262144 [pid 459] ioctl(5, LOOP_CLR_FD [pid 359] <... close resumed>) = 0 [pid 356] ioctl(3, LOOP_CLR_FD [pid 461] <... mmap resumed>) = 0x7f1bc18a3000 [pid 460] munmap(0x7f1bc18a3000, 138412032 [pid 459] <... ioctl resumed>) = 0 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] <... ioctl resumed>) = 0 [pid 460] <... munmap resumed>) = 0 [pid 356] close(3./strace-static-x86_64: Process 462 attached [pid 460] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 356] <... close resumed>) = 0 [pid 462] set_robust_list(0x5555574d4660, 24 [pid 460] <... openat resumed>) = 5 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 462] <... set_robust_list resumed>) = 0 [pid 461] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 460] ioctl(5, LOOP_SET_FD, 4 [pid 462] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 460] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 463 [pid 462] <... prctl resumed>) = 0 [pid 460] ioctl(5, LOOP_CLR_FD [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 464 [pid 462] setpgid(0, 0 [pid 460] <... ioctl resumed>) = 0 [pid 462] <... setpgid resumed>) = 0 [pid 462] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 461] <... write resumed>) = 262144 [pid 462] <... openat resumed>) = 3 [pid 461] munmap(0x7f1bc18a3000, 138412032 [pid 459] ioctl(5, LOOP_SET_FD, 4 [pid 462] write(3, "1000", 4 [pid 459] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 462] <... write resumed>) = 4 [pid 459] close(5 [pid 462] close(3 [pid 461] <... munmap resumed>) = 0 [pid 460] ioctl(5, LOOP_SET_FD, 4 [pid 459] <... close resumed>) = 0 [pid 462] <... close resumed>) = 0 [pid 461] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 460] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 459] close(4 [pid 462] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 460] close(5 [pid 462] <... openat resumed>) = 3 [pid 460] <... close resumed>) = 0 [pid 462] ioctl(3, BLKSECDISCARD, [0, 0] [pid 460] close(4 [pid 462] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 461] <... openat resumed>) = 5 [pid 460] <... close resumed>) = 0 [pid 459] <... close resumed>) = 0 [pid 462] memfd_create("syzkaller", 0 [pid 461] ioctl(5, LOOP_SET_FD, 4 [pid 460] exit_group(0 [pid 459] exit_group(0 [pid 462] <... memfd_create resumed>) = 4 [pid 461] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 460] <... exit_group resumed>) = ? [pid 459] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 463 attached [pid 462] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 461] ioctl(5, LOOP_CLR_FD [pid 460] +++ exited with 0 +++ [pid 459] +++ exited with 0 +++ ./strace-static-x86_64: Process 464 attached [pid 463] set_robust_list(0x5555574d4660, 24 [pid 462] <... mmap resumed>) = 0x7f1bc18a3000 [pid 461] <... ioctl resumed>) = 0 [pid 464] set_robust_list(0x5555574d4660, 24 [pid 463] <... set_robust_list resumed>) = 0 [pid 462] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=459, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 357] --- 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] <... set_robust_list resumed>) = 0 [pid 463] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 462] <... write resumed>) = 262144 [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 464] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 358] <... restart_syscall resumed>) = 0 [pid 357] <... restart_syscall resumed>) = 0 [pid 464] <... prctl resumed>) = 0 [pid 462] munmap(0x7f1bc18a3000, 138412032 [pid 464] setpgid(0, 0 [pid 462] <... munmap resumed>) = 0 [pid 464] <... setpgid resumed>) = 0 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 464] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 462] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 358] <... openat resumed>) = 3 [pid 357] <... openat resumed>) = 3 [pid 464] <... openat resumed>) = 3 [pid 462] <... openat resumed>) = 5 [pid 358] ioctl(3, LOOP_CLR_FD [pid 357] ioctl(3, LOOP_CLR_FD [pid 464] write(3, "1000", 4 [pid 462] ioctl(5, LOOP_SET_FD, 4 [pid 358] <... ioctl resumed>) = 0 [pid 357] <... ioctl resumed>) = 0 [pid 464] <... write resumed>) = 4 [pid 462] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] close(3 [pid 357] close(3 [pid 464] close(3 [pid 462] ioctl(5, LOOP_CLR_FD [pid 358] <... close resumed>) = 0 [pid 357] <... close resumed>) = 0 [pid 464] <... close resumed>) = 0 [pid 462] <... ioctl resumed>) = 0 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 464] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 465 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 466 [pid 464] ioctl(3, BLKSECDISCARD, [0, 0] [pid 463] <... prctl resumed>) = 0 [pid 464] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 463] setpgid(0, 0 [pid 461] ioctl(5, LOOP_SET_FD, 4 [pid 464] memfd_create("syzkaller", 0 [pid 463] <... setpgid resumed>) = 0 [pid 462] ioctl(5, LOOP_SET_FD, 4 [pid 461] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 464] <... memfd_create resumed>) = 4 [pid 463] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 462] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 461] close(5 [pid 464] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 463] <... openat resumed>) = 3 [pid 462] close(5 [pid 461] <... close resumed>) = 0 [pid 464] <... mmap resumed>) = 0x7f1bc18a3000 [pid 463] write(3, "1000", 4 [pid 462] <... close resumed>) = 0 [pid 461] close(4 [pid 464] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 462] close(4 [pid 464] <... write resumed>) = 262144 [pid 463] <... write resumed>) = 4 [pid 462] <... close resumed>) = 0 [pid 461] <... close resumed>) = 0 [pid 464] munmap(0x7f1bc18a3000, 138412032 [pid 463] close(3 [pid 462] exit_group(0 [pid 461] exit_group(0 [pid 464] <... munmap resumed>) = 0 [pid 463] <... close resumed>) = 0 [pid 462] <... exit_group resumed>) = ? [pid 461] <... exit_group resumed>) = ? [pid 464] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 463] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 462] +++ exited with 0 +++ ./strace-static-x86_64: Process 466 attached [pid 464] <... openat resumed>) = 5 [pid 466] set_robust_list(0x5555574d4660, 24 [pid 464] ioctl(5, LOOP_SET_FD, 4 [pid 461] +++ exited with 0 +++ [pid 466] <... set_robust_list resumed>) = 0 [pid 464] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 463] <... openat resumed>) = 3 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=462, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 465 attached [pid 466] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 464] ioctl(5, LOOP_CLR_FD [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=461, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 466] <... prctl resumed>) = 0 [pid 465] set_robust_list(0x5555574d4660, 24 [pid 464] <... ioctl resumed>) = 0 [pid 463] ioctl(3, BLKSECDISCARD, [0, 0] [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 466] setpgid(0, 0 [pid 465] <... set_robust_list resumed>) = 0 [pid 463] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 361] <... restart_syscall resumed>) = 0 [pid 466] <... setpgid resumed>) = 0 [pid 465] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 463] memfd_create("syzkaller", 0 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 466] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 465] <... prctl resumed>) = 0 [pid 463] <... memfd_create resumed>) = 4 [pid 360] <... openat resumed>) = 3 [pid 466] <... openat resumed>) = 3 [pid 465] setpgid(0, 0 [pid 463] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 360] ioctl(3, LOOP_CLR_FD [pid 466] write(3, "1000", 4 [pid 465] <... setpgid resumed>) = 0 [pid 464] ioctl(5, LOOP_SET_FD, 4 [pid 463] <... mmap resumed>) = 0x7f1bc18a3000 [pid 361] <... openat resumed>) = 3 [pid 360] <... ioctl resumed>) = 0 [pid 466] <... write resumed>) = 4 [pid 465] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 464] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] ioctl(3, LOOP_CLR_FD [pid 466] close(3 [pid 465] <... openat resumed>) = 3 [pid 464] close(5 [pid 361] <... ioctl resumed>) = 0 [pid 466] <... close resumed>) = 0 [pid 465] write(3, "1000", 4 [pid 464] <... close resumed>) = 0 [pid 361] close(3 [pid 466] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 465] <... write resumed>) = 4 [pid 464] close(4 [pid 361] <... close resumed>) = 0 [pid 466] <... openat resumed>) = 3 [pid 465] close(3 [pid 464] <... close resumed>) = 0 [pid 463] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 360] close(3 [pid 466] ioctl(3, BLKSECDISCARD, [0, 0] [pid 465] <... close resumed>) = 0 [pid 464] exit_group(0 [pid 466] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 465] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 464] <... exit_group resumed>) = ? [pid 463] <... write resumed>) = 262144 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 467 [pid 360] <... close resumed>) = 0 [pid 466] memfd_create("syzkaller", 0 [pid 465] <... openat resumed>) = 3 [pid 464] +++ exited with 0 +++ [pid 463] munmap(0x7f1bc18a3000, 138412032 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 466] <... memfd_create resumed>) = 4 [pid 465] ioctl(3, BLKSECDISCARD, [0, 0] [pid 466] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 465] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 463] <... munmap resumed>) = 0 [pid 466] <... mmap resumed>) = 0x7f1bc18a3000 [pid 465] memfd_create("syzkaller", 0 [pid 466] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 465] <... memfd_create resumed>) = 4 [pid 463] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 467 attached [pid 466] <... write resumed>) = 262144 [pid 465] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 463] <... openat resumed>) = 5 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 468 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=464, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 466] munmap(0x7f1bc18a3000, 138412032 [pid 465] <... mmap resumed>) = 0x7f1bc18a3000 [pid 463] ioctl(5, LOOP_SET_FD, 4 [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 467] set_robust_list(0x5555574d4660, 24 [pid 466] <... munmap resumed>) = 0 [pid 465] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 463] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 468 attached [pid 467] <... set_robust_list resumed>) = 0 [pid 466] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 465] <... write resumed>) = 262144 [pid 463] ioctl(5, LOOP_CLR_FD [pid 468] set_robust_list(0x5555574d4660, 24 [pid 467] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 466] <... openat resumed>) = 5 [pid 465] munmap(0x7f1bc18a3000, 138412032 [pid 463] <... ioctl resumed>) = 0 [pid 468] <... set_robust_list resumed>) = 0 [pid 467] <... prctl resumed>) = 0 [pid 466] ioctl(5, LOOP_SET_FD, 4 [pid 465] <... munmap resumed>) = 0 [pid 468] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 467] setpgid(0, 0 [pid 466] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 465] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 468] <... prctl resumed>) = 0 [pid 467] <... setpgid resumed>) = 0 [pid 466] ioctl(5, LOOP_CLR_FD [pid 465] <... openat resumed>) = 5 [pid 359] <... openat resumed>) = 3 [pid 468] setpgid(0, 0 [pid 467] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 466] <... ioctl resumed>) = 0 [pid 465] ioctl(5, LOOP_SET_FD, 4 [pid 359] ioctl(3, LOOP_CLR_FD [pid 468] <... setpgid resumed>) = 0 [pid 467] <... openat resumed>) = 3 [pid 465] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 463] ioctl(5, LOOP_SET_FD, 4 [pid 359] <... ioctl resumed>) = 0 [pid 468] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 467] write(3, "1000", 4 [pid 465] ioctl(5, LOOP_CLR_FD [pid 463] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] close(3 [pid 468] <... openat resumed>) = 3 [pid 467] <... write resumed>) = 4 [pid 465] <... ioctl resumed>) = 0 [pid 463] close(5 [pid 359] <... close resumed>) = 0 [pid 468] write(3, "1000", 4 [pid 467] close(3 [pid 466] ioctl(5, LOOP_SET_FD, 4 [pid 463] <... close resumed>) = 0 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 468] <... write resumed>) = 4 [pid 467] <... close resumed>) = 0 [pid 466] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 463] close(4 [pid 466] close(5) = 0 [pid 466] close(4 [pid 468] close(3 [pid 467] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 466] <... close resumed>) = 0 [pid 463] <... close resumed>) = 0 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 469 [pid 468] <... close resumed>) = 0 [pid 467] <... openat resumed>) = 3 [pid 466] exit_group(0 [pid 465] ioctl(5, LOOP_SET_FD, 4 [pid 463] exit_group(0 [pid 468] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 467] ioctl(3, BLKSECDISCARD, [0, 0] [pid 466] <... exit_group resumed>) = ? [pid 465] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 463] <... exit_group resumed>) = ? [pid 468] <... openat resumed>) = 3 [pid 467] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 466] +++ exited with 0 +++ [pid 465] close(5) = 0 [pid 465] close(4 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=466, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 468] ioctl(3, BLKSECDISCARD, [0, 0] [pid 467] memfd_create("syzkaller", 0 [pid 465] <... close resumed>) = 0 [pid 463] +++ exited with 0 +++ [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 468] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 467] <... memfd_create resumed>) = 4 [pid 465] exit_group(0 [pid 357] <... restart_syscall resumed>) = 0 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=463, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 468] memfd_create("syzkaller", 0 [pid 467] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 465] <... exit_group resumed>) = ? [pid 468] <... memfd_create resumed>) = 4 [pid 467] <... mmap resumed>) = 0x7f1bc18a3000 [pid 465] +++ exited with 0 +++ [pid 468] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=465, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 357] <... openat resumed>) = 3 [pid 356] <... openat resumed>) = 3 [pid 357] ioctl(3, LOOP_CLR_FD [pid 356] ioctl(3, LOOP_CLR_FD [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 357] <... ioctl resumed>) = 0 [pid 356] <... ioctl resumed>) = 0 [pid 358] <... openat resumed>) = 3 [pid 357] close(3 [pid 356] close(3 [pid 358] ioctl(3, LOOP_CLR_FD [pid 357] <... close resumed>) = 0 [pid 356] <... close resumed>) = 0 [pid 358] <... ioctl resumed>) = 0 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 468] <... mmap resumed>) = 0x7f1bc18a3000 [pid 467] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 358] close(3./strace-static-x86_64: Process 469 attached ) = 0 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 470 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 471 [pid 469] set_robust_list(0x5555574d4660, 24 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 469] <... set_robust_list resumed>) = 0 [pid 469] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 472 [pid 469] <... prctl resumed>) = 0 [pid 468] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 469] setpgid(0, 0) = 0 [pid 469] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 469] write(3, "1000", 4) = 4 [pid 467] <... write resumed>) = 262144 [pid 469] close(3) = 0 [pid 469] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 469] ioctl(3, BLKSECDISCARD, [0, 0] [pid 468] <... write resumed>) = 262144 [pid 467] munmap(0x7f1bc18a3000, 138412032 [pid 468] munmap(0x7f1bc18a3000, 138412032 [pid 469] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 469] memfd_create("syzkaller", 0 [pid 467] <... munmap resumed>) = 0 [pid 469] <... memfd_create resumed>) = 4 [pid 468] <... munmap resumed>) = 0 [pid 467] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 469] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 468] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 467] <... openat resumed>) = 5 [pid 469] <... mmap resumed>) = 0x7f1bc18a3000 [pid 468] <... openat resumed>) = 5 [pid 467] ioctl(5, LOOP_SET_FD, 4 [pid 469] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 468] ioctl(5, LOOP_SET_FD, 4 [pid 467] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 472 attached ./strace-static-x86_64: Process 471 attached ./strace-static-x86_64: Process 470 attached [pid 468] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 467] ioctl(5, LOOP_CLR_FD [pid 472] set_robust_list(0x5555574d4660, 24 [pid 471] set_robust_list(0x5555574d4660, 24 [pid 470] set_robust_list(0x5555574d4660, 24 [pid 468] ioctl(5, LOOP_CLR_FD [pid 467] <... ioctl resumed>) = 0 [pid 472] <... set_robust_list resumed>) = 0 [pid 471] <... set_robust_list resumed>) = 0 [pid 470] <... set_robust_list resumed>) = 0 [pid 468] <... ioctl resumed>) = 0 [pid 472] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 471] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 470] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 469] <... write resumed>) = 262144 [pid 472] <... prctl resumed>) = 0 [pid 471] <... prctl resumed>) = 0 [pid 470] <... prctl resumed>) = 0 [pid 467] ioctl(5, LOOP_SET_FD, 4 [pid 472] setpgid(0, 0 [pid 471] setpgid(0, 0 [pid 470] setpgid(0, 0 [pid 467] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 472] <... setpgid resumed>) = 0 [pid 471] <... setpgid resumed>) = 0 [pid 470] <... setpgid resumed>) = 0 [pid 467] close(5 [pid 472] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 471] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 470] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 467] <... close resumed>) = 0 [pid 472] <... openat resumed>) = 3 [pid 471] <... openat resumed>) = 3 [pid 470] <... openat resumed>) = 3 [pid 469] munmap(0x7f1bc18a3000, 138412032 [pid 468] ioctl(5, LOOP_SET_FD, 4 [pid 467] close(4 [pid 472] write(3, "1000", 4 [pid 471] write(3, "1000", 4 [pid 470] write(3, "1000", 4 [pid 469] <... munmap resumed>) = 0 [pid 468] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 472] <... write resumed>) = 4 [pid 469] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 472] close(3 [pid 469] <... openat resumed>) = 5 [pid 467] <... close resumed>) = 0 [pid 472] <... close resumed>) = 0 [pid 471] <... write resumed>) = 4 [pid 470] <... write resumed>) = 4 [pid 469] ioctl(5, LOOP_SET_FD, 4 [pid 468] close(5 [pid 467] exit_group(0 [pid 472] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 471] close(3 [pid 470] close(3 [pid 469] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 468] <... close resumed>) = 0 [pid 467] <... exit_group resumed>) = ? [pid 472] <... openat resumed>) = 3 [pid 471] <... close resumed>) = 0 [pid 470] <... close resumed>) = 0 [pid 469] ioctl(5, LOOP_CLR_FD [pid 468] close(4 [pid 472] ioctl(3, BLKSECDISCARD, [0, 0] [pid 469] <... ioctl resumed>) = 0 [pid 467] +++ exited with 0 +++ [pid 472] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 472] memfd_create("syzkaller", 0 [pid 468] <... close resumed>) = 0 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=467, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 472] <... memfd_create resumed>) = 4 [pid 471] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 470] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 472] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 361] <... openat resumed>) = 3 [pid 472] <... mmap resumed>) = 0x7f1bc18a3000 [pid 469] ioctl(5, LOOP_SET_FD, 4 [pid 361] ioctl(3, LOOP_CLR_FD [pid 472] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 469] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] <... ioctl resumed>) = 0 [pid 472] <... write resumed>) = 262144 [pid 469] close(5 [pid 361] close(3 [pid 472] munmap(0x7f1bc18a3000, 138412032 [pid 469] <... close resumed>) = 0 [pid 361] <... close resumed>) = 0 [pid 472] <... munmap resumed>) = 0 [pid 469] close(4 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 472] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 469] <... close resumed>) = 0 [pid 472] <... openat resumed>) = 5 [pid 469] exit_group(0 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 473 [pid 472] ioctl(5, LOOP_SET_FD, 4 [pid 469] <... exit_group resumed>) = ? [pid 472] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 469] +++ exited with 0 +++ [pid 472] ioctl(5, LOOP_CLR_FD) = 0 [pid 470] <... openat resumed>) = 3 [pid 468] exit_group(0 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=469, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 470] ioctl(3, BLKSECDISCARD, [0, 0] [pid 471] <... openat resumed>) = 3 [pid 468] <... exit_group resumed>) = ? [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 471] ioctl(3, BLKSECDISCARD, [0, 0] [pid 470] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) ./strace-static-x86_64: Process 473 attached [pid 473] set_robust_list(0x5555574d4660, 24) = 0 [pid 468] +++ exited with 0 +++ [pid 472] ioctl(5, LOOP_SET_FD, 4 [pid 471] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 470] memfd_create("syzkaller", 0 [pid 359] <... restart_syscall resumed>) = 0 [pid 472] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 471] memfd_create("syzkaller", 0 [pid 470] <... memfd_create resumed>) = 4 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=468, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 472] close(5 [pid 471] <... memfd_create resumed>) = 4 [pid 470] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 472] <... close resumed>) = 0 [pid 471] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 470] <... mmap resumed>) = 0x7f1bc18a3000 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 472] close(4 [pid 471] <... mmap resumed>) = 0x7f1bc18a3000 [pid 472] <... close resumed>) = 0 [pid 472] exit_group(0) = ? [pid 470] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 359] <... openat resumed>) = 3 [pid 472] +++ exited with 0 +++ [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=472, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 473] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 471] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 360] <... openat resumed>) = 3 [pid 359] ioctl(3, LOOP_CLR_FD [pid 473] <... prctl resumed>) = 0 [pid 358] <... restart_syscall resumed>) = 0 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 358] ioctl(3, LOOP_CLR_FD) = 0 [pid 358] close(3 [pid 473] setpgid(0, 0 [pid 470] <... write resumed>) = 262144 [pid 360] ioctl(3, LOOP_CLR_FD [pid 359] <... ioctl resumed>) = 0 [pid 358] <... close resumed>) = 0 [pid 473] <... setpgid resumed>) = 0 [pid 360] <... ioctl resumed>) = 0 [pid 359] close(3 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 473] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 470] munmap(0x7f1bc18a3000, 138412032 [pid 360] close(3 [pid 359] <... close resumed>) = 0 [pid 471] <... write resumed>) = 262144 [pid 473] <... openat resumed>) = 3 [pid 471] munmap(0x7f1bc18a3000, 138412032 [pid 470] <... munmap resumed>) = 0 [pid 360] <... close resumed>) = 0 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 474 [pid 473] write(3, "1000", 4 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 473] <... write resumed>) = 4 [pid 473] close(3) = 0 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 475 [pid 470] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 476 [pid 473] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 470] <... openat resumed>) = 5 [pid 471] <... munmap resumed>) = 0 [pid 471] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 470] ioctl(5, LOOP_SET_FD, 4 [pid 473] <... openat resumed>) = 3 [pid 471] <... openat resumed>) = 5 [pid 470] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 473] ioctl(3, BLKSECDISCARD, [0, 0] [pid 471] ioctl(5, LOOP_SET_FD, 4 [pid 470] ioctl(5, LOOP_CLR_FD [pid 473] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 471] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 470] <... ioctl resumed>) = 0 [pid 473] memfd_create("syzkaller", 0 [pid 471] ioctl(5, LOOP_CLR_FD [pid 473] <... memfd_create resumed>) = 4 [pid 471] <... ioctl resumed>) = 0 [pid 473] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 473] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 471] ioctl(5, LOOP_SET_FD, 4 [pid 470] ioctl(5, LOOP_SET_FD, 4 [pid 471] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 470] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 475 attached [pid 471] close(5 [pid 470] close(5./strace-static-x86_64: Process 476 attached [pid 475] set_robust_list(0x5555574d4660, 24 [pid 471] <... close resumed>) = 0 [pid 470] <... close resumed>) = 0 [pid 471] close(4 [pid 470] close(4 [pid 476] set_robust_list(0x5555574d4660, 24 [pid 475] <... set_robust_list resumed>) = 0 [pid 476] <... set_robust_list resumed>) = 0 [pid 475] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 476] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 475] <... prctl resumed>) = 0 [pid 476] <... prctl resumed>) = 0 [pid 475] setpgid(0, 0 [pid 476] setpgid(0, 0 [pid 475] <... setpgid resumed>) = 0 [pid 473] munmap(0x7f1bc18a3000, 138412032 [pid 471] <... close resumed>) = 0 [pid 476] <... setpgid resumed>) = 0 [pid 475] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 473] <... munmap resumed>) = 0 [pid 471] exit_group(0 [pid 470] <... close resumed>) = 0 ./strace-static-x86_64: Process 474 attached [pid 476] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 475] <... openat resumed>) = 3 [pid 473] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 471] <... exit_group resumed>) = ? [pid 470] exit_group(0 [pid 476] <... openat resumed>) = 3 [pid 475] write(3, "1000", 4 [pid 473] <... openat resumed>) = 5 [pid 476] write(3, "1000", 4 [pid 475] <... write resumed>) = 4 [pid 474] set_robust_list(0x5555574d4660, 24 [pid 473] ioctl(5, LOOP_SET_FD, 4 [pid 471] +++ exited with 0 +++ [pid 470] <... exit_group resumed>) = ? [pid 476] <... write resumed>) = 4 [pid 475] close(3 [pid 473] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=471, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 476] close(3 [pid 475] <... close resumed>) = 0 [pid 474] <... set_robust_list resumed>) = 0 [pid 473] ioctl(5, LOOP_CLR_FD [pid 470] +++ exited with 0 +++ [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 476] <... close resumed>) = 0 [pid 475] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 474] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 473] <... ioctl resumed>) = 0 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=470, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] <... restart_syscall resumed>) = 0 [pid 476] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 475] <... openat resumed>) = 3 [pid 474] <... prctl resumed>) = 0 [pid 476] <... openat resumed>) = 3 [pid 475] ioctl(3, BLKSECDISCARD, [0, 0] [pid 474] setpgid(0, 0 [pid 476] ioctl(3, BLKSECDISCARD, [0, 0] [pid 475] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 474] <... setpgid resumed>) = 0 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 476] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 475] memfd_create("syzkaller", 0 [pid 474] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 356] <... openat resumed>) = 3 [pid 476] memfd_create("syzkaller", 0 [pid 475] <... memfd_create resumed>) = 4 [pid 474] <... openat resumed>) = 3 [pid 473] ioctl(5, LOOP_SET_FD, 4 [pid 356] ioctl(3, LOOP_CLR_FD [pid 476] <... memfd_create resumed>) = 4 [pid 475] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 474] write(3, "1000", 4 [pid 473] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] <... ioctl resumed>) = 0 [pid 476] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 475] <... mmap resumed>) = 0x7f1bc18a3000 [pid 474] <... write resumed>) = 4 [pid 473] close(5 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 356] close(3 [pid 476] <... mmap resumed>) = 0x7f1bc18a3000 [pid 475] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 474] close(3 [pid 473] <... close resumed>) = 0 [pid 357] <... openat resumed>) = 3 [pid 356] <... close resumed>) = 0 [pid 476] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 475] <... write resumed>) = 262144 [pid 474] <... close resumed>) = 0 [pid 473] close(4 [pid 357] ioctl(3, LOOP_CLR_FD [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 476] <... write resumed>) = 262144 [pid 475] munmap(0x7f1bc18a3000, 138412032 [pid 474] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 473] <... close resumed>) = 0 [pid 357] <... ioctl resumed>) = 0 [pid 476] munmap(0x7f1bc18a3000, 138412032 [pid 475] <... munmap resumed>) = 0 [pid 474] <... openat resumed>) = 3 [pid 473] exit_group(0 [pid 357] close(3 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 477 [pid 476] <... munmap resumed>) = 0 [pid 475] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 474] ioctl(3, BLKSECDISCARD, [0, 0] [pid 473] <... exit_group resumed>) = ? [pid 357] <... close resumed>) = 0 [pid 476] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 475] <... openat resumed>) = 5 [pid 474] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 473] +++ exited with 0 +++ [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 476] <... openat resumed>) = 5 [pid 475] ioctl(5, LOOP_SET_FD, 4 [pid 474] memfd_create("syzkaller", 0 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=473, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 477 attached [pid 476] ioctl(5, LOOP_SET_FD, 4 [pid 475] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 474] <... memfd_create resumed>) = 4 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 478 [pid 477] set_robust_list(0x5555574d4660, 24 [pid 476] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 475] ioctl(5, LOOP_CLR_FD [pid 474] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 477] <... set_robust_list resumed>) = 0 [pid 476] ioctl(5, LOOP_CLR_FD [pid 475] <... ioctl resumed>) = 0 [pid 474] <... mmap resumed>) = 0x7f1bc18a3000 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 476] <... ioctl resumed>) = 0 [pid 361] <... openat resumed>) = 3 [pid 361] ioctl(3, LOOP_CLR_FD) = 0 [pid 361] close(3) = 0 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 474] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 477] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 476] ioctl(5, LOOP_SET_FD, 4 [pid 475] ioctl(5, LOOP_SET_FD, 4 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 479 [pid 476] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 475] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 476] close(5 [pid 475] close(5 [pid 476] <... close resumed>) = 0 [pid 475] <... close resumed>) = 0 [pid 476] close(4 [pid 475] close(4 [pid 474] <... write resumed>) = 262144 [pid 477] <... prctl resumed>) = 0 [pid 476] <... close resumed>) = 0 [pid 475] <... close resumed>) = 0 [pid 474] munmap(0x7f1bc18a3000, 138412032./strace-static-x86_64: Process 479 attached [pid 477] setpgid(0, 0 [pid 476] exit_group(0 [pid 475] exit_group(0 [pid 479] set_robust_list(0x5555574d4660, 24 [pid 477] <... setpgid resumed>) = 0 [pid 476] <... exit_group resumed>) = ? [pid 475] <... exit_group resumed>) = ? [pid 474] <... munmap resumed>) = 0 [pid 479] <... set_robust_list resumed>) = 0 [pid 477] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 476] +++ exited with 0 +++ [pid 475] +++ exited with 0 +++ [pid 474] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 477] <... openat resumed>) = 3 [pid 474] <... openat resumed>) = 5 [pid 477] write(3, "1000", 4 [pid 474] ioctl(5, LOOP_SET_FD, 4 [pid 479] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=476, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=475, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 477] <... write resumed>) = 4 [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 479] <... prctl resumed>) = 0 [pid 477] close(3 [pid 474] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 479] setpgid(0, 0 [pid 477] <... close resumed>) = 0 [pid 474] ioctl(5, LOOP_CLR_FD [pid 479] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 478 attached [pid 479] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 477] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 474] <... ioctl resumed>) = 0 [pid 479] <... openat resumed>) = 3 [pid 478] set_robust_list(0x5555574d4660, 24 [pid 477] <... openat resumed>) = 3 [pid 360] <... restart_syscall resumed>) = 0 [pid 359] <... restart_syscall resumed>) = 0 [pid 479] write(3, "1000", 4 [pid 478] <... set_robust_list resumed>) = 0 [pid 477] ioctl(3, BLKSECDISCARD, [0, 0] [pid 479] <... write resumed>) = 4 [pid 478] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 477] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 479] close(3 [pid 478] <... prctl resumed>) = 0 [pid 477] memfd_create("syzkaller", 0 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 478] setpgid(0, 0 [pid 477] <... memfd_create resumed>) = 4 [pid 360] <... openat resumed>) = 3 [pid 479] <... close resumed>) = 0 [pid 478] <... setpgid resumed>) = 0 [pid 477] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 474] ioctl(5, LOOP_SET_FD, 4 [pid 360] ioctl(3, LOOP_CLR_FD [pid 359] <... openat resumed>) = 3 [pid 477] <... mmap resumed>) = 0x7f1bc18a3000 [pid 474] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] <... ioctl resumed>) = 0 [pid 359] ioctl(3, LOOP_CLR_FD [pid 478] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 478] write(3, "1000", 4) = 4 [pid 478] close(3) = 0 [pid 478] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 479] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 478] <... openat resumed>) = 3 [pid 477] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 474] close(5 [pid 360] close(3 [pid 359] <... ioctl resumed>) = 0 [pid 479] <... openat resumed>) = 3 [pid 478] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 478] memfd_create("syzkaller", 0) = 4 [pid 478] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 477] <... write resumed>) = 262144 [pid 474] <... close resumed>) = 0 [pid 360] <... close resumed>) = 0 [pid 359] close(3 [pid 479] ioctl(3, BLKSECDISCARD, [0, 0] [pid 478] <... mmap resumed>) = 0x7f1bc18a3000 [pid 477] munmap(0x7f1bc18a3000, 138412032 [pid 474] close(4 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 479] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 478] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 359] <... close resumed>) = 0 [pid 478] <... write resumed>) = 262144 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 478] munmap(0x7f1bc18a3000, 138412032) = 0 [pid 474] <... close resumed>) = 0 [pid 478] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 5 [pid 478] ioctl(5, LOOP_SET_FD, 4 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 480 [pid 474] exit_group(0 [pid 478] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 478] ioctl(5, LOOP_CLR_FD [pid 477] <... munmap resumed>) = 0 [pid 474] <... exit_group resumed>) = ? [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 481 [pid 479] memfd_create("syzkaller", 0 [pid 478] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 480 attached [pid 480] set_robust_list(0x5555574d4660, 24 [pid 478] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 478] close(5) = 0 [pid 478] close(4 [pid 479] <... memfd_create resumed>) = 4 [pid 478] <... close resumed>) = 0 [pid 477] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 474] +++ exited with 0 +++ [pid 479] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 478] exit_group(0 [pid 477] <... openat resumed>) = 5 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=474, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 479] <... mmap resumed>) = 0x7f1bc18a3000 [pid 478] <... exit_group resumed>) = ? [pid 477] ioctl(5, LOOP_SET_FD, 4 [pid 358] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 481 attached [pid 480] <... set_robust_list resumed>) = 0 [pid 478] +++ exited with 0 +++ [pid 477] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] <... restart_syscall resumed>) = 0 [pid 481] set_robust_list(0x5555574d4660, 24 [pid 480] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 477] ioctl(5, LOOP_CLR_FD [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=478, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 481] <... set_robust_list resumed>) = 0 [pid 480] <... prctl resumed>) = 0 [pid 479] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 477] <... ioctl resumed>) = 0 [pid 481] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 480] setpgid(0, 0 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 481] <... prctl resumed>) = 0 [pid 480] <... setpgid resumed>) = 0 [pid 358] <... openat resumed>) = 3 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 481] setpgid(0, 0 [pid 480] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 479] <... write resumed>) = 262144 [pid 358] ioctl(3, LOOP_CLR_FD [pid 357] <... openat resumed>) = 3 [pid 481] <... setpgid resumed>) = 0 [pid 480] <... openat resumed>) = 3 [pid 479] munmap(0x7f1bc18a3000, 138412032 [pid 358] <... ioctl resumed>) = 0 [pid 357] ioctl(3, LOOP_CLR_FD [pid 481] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 480] write(3, "1000", 4 [pid 479] <... munmap resumed>) = 0 [pid 477] ioctl(5, LOOP_SET_FD, 4 [pid 358] close(3 [pid 357] <... ioctl resumed>) = 0 [pid 481] <... openat resumed>) = 3 [pid 480] <... write resumed>) = 4 [pid 479] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 477] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] <... close resumed>) = 0 [pid 357] close(3 [pid 481] write(3, "1000", 4 [pid 480] close(3 [pid 479] <... openat resumed>) = 5 [pid 477] close(5 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 357] <... close resumed>) = 0 [pid 481] <... write resumed>) = 4 [pid 480] <... close resumed>) = 0 [pid 479] ioctl(5, LOOP_SET_FD, 4 [pid 477] <... close resumed>) = 0 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 481] close(3 [pid 480] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 479] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 477] close(4 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 482 [pid 481] <... close resumed>) = 0 [pid 480] <... openat resumed>) = 3 [pid 479] ioctl(5, LOOP_CLR_FD [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 483 [pid 481] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 480] ioctl(3, BLKSECDISCARD, [0, 0] [pid 481] <... openat resumed>) = 3 [pid 480] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 479] <... ioctl resumed>) = 0 [pid 477] <... close resumed>) = 0 [pid 481] ioctl(3, BLKSECDISCARD, [0, 0] [pid 480] memfd_create("syzkaller", 0 [pid 477] exit_group(0 [pid 481] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 480] <... memfd_create resumed>) = 4 [pid 477] <... exit_group resumed>) = ? [pid 481] memfd_create("syzkaller", 0 [pid 480] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 481] <... memfd_create resumed>) = 4 [pid 480] <... mmap resumed>) = 0x7f1bc18a3000 [pid 481] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 480] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 477] +++ exited with 0 +++ [pid 481] <... mmap resumed>) = 0x7f1bc18a3000 [pid 480] <... write resumed>) = 262144 [pid 479] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 482 attached [pid 481] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 480] munmap(0x7f1bc18a3000, 138412032 [pid 479] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=477, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 483 attached [pid 482] set_robust_list(0x5555574d4660, 24 [pid 481] <... write resumed>) = 262144 [pid 480] <... munmap resumed>) = 0 [pid 479] close(5 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 483] set_robust_list(0x5555574d4660, 24 [pid 482] <... set_robust_list resumed>) = 0 [pid 481] munmap(0x7f1bc18a3000, 138412032 [pid 480] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 479] <... close resumed>) = 0 [pid 356] <... openat resumed>) = 3 [pid 483] <... set_robust_list resumed>) = 0 [pid 482] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 481] <... munmap resumed>) = 0 [pid 480] <... openat resumed>) = 5 [pid 479] close(4 [pid 356] ioctl(3, LOOP_CLR_FD [pid 482] <... prctl resumed>) = 0 [pid 481] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 480] ioctl(5, LOOP_SET_FD, 4 [pid 356] <... ioctl resumed>) = 0 [pid 481] <... openat resumed>) = 5 [pid 480] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] close(3 [pid 481] ioctl(5, LOOP_SET_FD, 4 [pid 480] ioctl(5, LOOP_CLR_FD [pid 356] <... close resumed>) = 0 [pid 483] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 482] setpgid(0, 0 [pid 481] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 480] <... ioctl resumed>) = 0 [pid 479] <... close resumed>) = 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 483] <... prctl resumed>) = 0 [pid 482] <... setpgid resumed>) = 0 [pid 481] ioctl(5, LOOP_CLR_FD [pid 479] exit_group(0 [pid 483] setpgid(0, 0 [pid 482] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 481] <... ioctl resumed>) = 0 [pid 479] <... exit_group resumed>) = ? [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 484 [pid 483] <... setpgid resumed>) = 0 [pid 482] <... openat resumed>) = 3 [pid 480] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 479] +++ exited with 0 +++ [pid 483] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 482] write(3, "1000", 4 [pid 480] close(5 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=479, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 483] <... openat resumed>) = 3 [pid 482] <... write resumed>) = 4 [pid 480] <... close resumed>) = 0 [pid 483] write(3, "1000", 4 [pid 482] close(3 [pid 481] ioctl(5, LOOP_SET_FD, 4 [pid 480] close(4 [pid 483] <... write resumed>) = 4 [pid 482] <... close resumed>) = 0 [pid 481] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 480] <... close resumed>) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 483] close(3 [pid 482] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 481] close(5 [pid 480] exit_group(0 [pid 361] <... openat resumed>) = 3 ./strace-static-x86_64: Process 484 attached [pid 483] <... close resumed>) = 0 [pid 482] <... openat resumed>) = 3 [pid 481] <... close resumed>) = 0 [pid 480] <... exit_group resumed>) = ? [pid 361] ioctl(3, LOOP_CLR_FD [pid 484] set_robust_list(0x5555574d4660, 24 [pid 483] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 482] ioctl(3, BLKSECDISCARD, [0, 0] [pid 481] close(4 [pid 480] +++ exited with 0 +++ [pid 361] <... ioctl resumed>) = 0 [pid 484] <... set_robust_list resumed>) = 0 [pid 483] <... openat resumed>) = 3 [pid 482] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 481] <... close resumed>) = 0 [pid 361] close(3 [pid 484] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 483] ioctl(3, BLKSECDISCARD, [0, 0] [pid 482] memfd_create("syzkaller", 0 [pid 481] exit_group(0 [pid 361] <... close resumed>) = 0 [pid 484] <... prctl resumed>) = 0 [pid 483] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 482] <... memfd_create resumed>) = 4 [pid 481] <... exit_group resumed>) = ? [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=480, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 484] setpgid(0, 0 [pid 483] memfd_create("syzkaller", 0 [pid 482] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 481] +++ exited with 0 +++ [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 484] <... setpgid resumed>) = 0 [pid 483] <... memfd_create resumed>) = 4 [pid 482] <... mmap resumed>) = 0x7f1bc18a3000 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 485 [pid 360] <... restart_syscall resumed>) = 0 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=481, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 484] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 483] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 485 attached [pid 485] set_robust_list(0x5555574d4660, 24) = 0 [pid 485] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 485] setpgid(0, 0) = 0 [pid 483] <... mmap resumed>) = 0x7f1bc18a3000 [pid 482] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 484] <... openat resumed>) = 3 [pid 483] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 484] write(3, "1000", 4 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 485] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 485] write(3, "1000", 4) = 4 [pid 482] <... write resumed>) = 262144 [pid 359] <... openat resumed>) = 3 [pid 484] <... write resumed>) = 4 [pid 360] <... openat resumed>) = 3 [pid 484] close(3 [pid 360] ioctl(3, LOOP_CLR_FD [pid 359] ioctl(3, LOOP_CLR_FD [pid 484] <... close resumed>) = 0 [pid 360] <... ioctl resumed>) = 0 [pid 359] <... ioctl resumed>) = 0 [pid 360] close(3 [pid 484] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 360] <... close resumed>) = 0 [pid 359] close(3 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 484] <... openat resumed>) = 3 [pid 359] <... close resumed>) = 0 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 484] ioctl(3, BLKSECDISCARD, [0, 0] [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 486 [pid 485] close(3 [pid 484] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 482] munmap(0x7f1bc18a3000, 138412032 [pid 483] <... write resumed>) = 262144 [pid 484] memfd_create("syzkaller", 0 [pid 485] <... close resumed>) = 0 [pid 482] <... munmap resumed>) = 0 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 487 ./strace-static-x86_64: Process 487 attached [pid 485] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 484] <... memfd_create resumed>) = 4 [pid 483] munmap(0x7f1bc18a3000, 138412032 [pid 482] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 485] <... openat resumed>) = 3 [pid 484] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 483] <... munmap resumed>) = 0 [pid 482] <... openat resumed>) = 5 [pid 487] set_robust_list(0x5555574d4660, 24 [pid 485] ioctl(3, BLKSECDISCARD, [0, 0] [pid 484] <... mmap resumed>) = 0x7f1bc18a3000 [pid 483] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 482] ioctl(5, LOOP_SET_FD, 4 [pid 485] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 485] memfd_create("syzkaller", 0) = 4 [pid 485] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 487] <... set_robust_list resumed>) = 0 [pid 484] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 483] <... openat resumed>) = 5 [pid 482] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 483] ioctl(5, LOOP_SET_FD, 4 [pid 482] ioctl(5, LOOP_CLR_FD [pid 485] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 483] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 482] <... ioctl resumed>) = 0 [pid 487] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 484] <... write resumed>) = 262144 [pid 483] ioctl(5, LOOP_CLR_FD [pid 487] <... prctl resumed>) = 0 [pid 484] munmap(0x7f1bc18a3000, 138412032 [pid 483] <... ioctl resumed>) = 0 [pid 487] setpgid(0, 0 [pid 484] <... munmap resumed>) = 0 [pid 487] <... setpgid resumed>) = 0 [pid 484] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 487] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 484] <... openat resumed>) = 5 [pid 482] ioctl(5, LOOP_SET_FD, 4 [pid 484] ioctl(5, LOOP_SET_FD, 4 [pid 483] ioctl(5, LOOP_SET_FD, 4 [pid 482] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 487] <... openat resumed>) = 3 [pid 487] write(3, "1000", 4 [pid 485] <... write resumed>) = 262144 [pid 484] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 483] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 482] close(5./strace-static-x86_64: Process 486 attached [pid 487] <... write resumed>) = 4 [pid 484] ioctl(5, LOOP_CLR_FD [pid 483] close(5 [pid 482] <... close resumed>) = 0 [pid 487] close(3 [pid 486] set_robust_list(0x5555574d4660, 24 [pid 484] <... ioctl resumed>) = 0 [pid 483] <... close resumed>) = 0 [pid 482] close(4 [pid 487] <... close resumed>) = 0 [pid 486] <... set_robust_list resumed>) = 0 [pid 485] munmap(0x7f1bc18a3000, 138412032 [pid 483] close(4 [pid 486] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 485] <... munmap resumed>) = 0 [pid 486] <... prctl resumed>) = 0 [pid 485] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 482] <... close resumed>) = 0 [pid 486] setpgid(0, 0 [pid 485] <... openat resumed>) = 5 [pid 486] <... setpgid resumed>) = 0 [pid 485] ioctl(5, LOOP_SET_FD, 4 [pid 487] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 486] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 485] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 483] <... close resumed>) = 0 [pid 482] exit_group(0 [pid 487] <... openat resumed>) = 3 [pid 486] <... openat resumed>) = 3 [pid 485] ioctl(5, LOOP_CLR_FD [pid 483] exit_group(0 [pid 482] <... exit_group resumed>) = ? [pid 487] ioctl(3, BLKSECDISCARD, [0, 0] [pid 486] write(3, "1000", 4 [pid 485] <... ioctl resumed>) = 0 [pid 483] <... exit_group resumed>) = ? [pid 486] <... write resumed>) = 4 [pid 486] close(3 [pid 482] +++ exited with 0 +++ [pid 486] <... close resumed>) = 0 [pid 487] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 486] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 484] ioctl(5, LOOP_SET_FD, 4 [pid 483] +++ exited with 0 +++ [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=482, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 487] memfd_create("syzkaller", 0 [pid 486] <... openat resumed>) = 3 [pid 484] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 487] <... memfd_create resumed>) = 4 [pid 486] ioctl(3, BLKSECDISCARD, [0, 0] [pid 485] ioctl(5, LOOP_SET_FD, 4 [pid 484] close(5 [pid 358] <... openat resumed>) = 3 [pid 357] --- 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] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 486] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 485] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 484] <... close resumed>) = 0 [pid 358] ioctl(3, LOOP_CLR_FD [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 487] <... mmap resumed>) = 0x7f1bc18a3000 [pid 486] memfd_create("syzkaller", 0 [pid 485] close(5 [pid 484] close(4 [pid 358] <... ioctl resumed>) = 0 [pid 357] <... restart_syscall resumed>) = 0 [pid 486] <... memfd_create resumed>) = 4 [pid 485] <... close resumed>) = 0 [pid 358] close(3 [pid 486] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 485] close(4 [pid 358] <... close resumed>) = 0 [pid 487] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 486] <... mmap resumed>) = 0x7f1bc18a3000 [pid 485] <... close resumed>) = 0 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 487] <... write resumed>) = 262144 [pid 486] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 485] exit_group(0 [pid 484] <... close resumed>) = 0 [pid 357] <... openat resumed>) = 3 [pid 487] munmap(0x7f1bc18a3000, 138412032 [pid 486] <... write resumed>) = 262144 [pid 485] <... exit_group resumed>) = ? [pid 484] exit_group(0 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 488 [pid 357] ioctl(3, LOOP_CLR_FD [pid 487] <... munmap resumed>) = 0 [pid 486] munmap(0x7f1bc18a3000, 138412032 [pid 485] +++ exited with 0 +++ [pid 484] <... exit_group resumed>) = ? [pid 357] <... ioctl resumed>) = 0 [pid 487] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 486] <... munmap resumed>) = 0 [pid 357] close(3 [pid 487] <... openat resumed>) = 5 [pid 486] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 484] +++ exited with 0 +++ [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=485, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] <... close resumed>) = 0 [pid 487] ioctl(5, LOOP_SET_FD, 4 [pid 486] <... openat resumed>) = 5 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=484, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 488 attached [pid 487] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 486] ioctl(5, LOOP_SET_FD, 4 [pid 361] <... openat resumed>) = 3 [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 488] set_robust_list(0x5555574d4660, 24 [pid 487] ioctl(5, LOOP_CLR_FD [pid 486] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] ioctl(3, LOOP_CLR_FD [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 489 [pid 356] <... restart_syscall resumed>) = 0 [pid 488] <... set_robust_list resumed>) = 0 [pid 487] <... ioctl resumed>) = 0 [pid 486] ioctl(5, LOOP_CLR_FD [pid 361] <... ioctl resumed>) = 0 [pid 488] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 486] <... ioctl resumed>) = 0 [pid 361] close(3 [pid 488] <... prctl resumed>) = 0 [pid 361] <... close resumed>) = 0 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 488] setpgid(0, 0 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] <... openat resumed>) = 3 [pid 488] <... setpgid resumed>) = 0 [pid 356] ioctl(3, LOOP_CLR_FD [pid 488] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 487] ioctl(5, LOOP_SET_FD, 4 [pid 486] ioctl(5, LOOP_SET_FD, 4 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 490 [pid 356] <... ioctl resumed>) = 0 [pid 488] <... openat resumed>) = 3 [pid 487] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 486] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] close(3./strace-static-x86_64: Process 489 attached [pid 488] write(3, "1000", 4 [pid 487] close(5 [pid 486] close(5 [pid 356] <... close resumed>) = 0 [pid 489] set_robust_list(0x5555574d4660, 24 [pid 488] <... write resumed>) = 4 [pid 487] <... close resumed>) = 0 [pid 486] <... close resumed>) = 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 489] <... set_robust_list resumed>) = 0 [pid 488] close(3 [pid 487] close(4 [pid 486] close(4 [pid 489] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 488] <... close resumed>) = 0 [pid 487] <... close resumed>) = 0 [pid 486] <... close resumed>) = 0 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 491 [pid 489] <... prctl resumed>) = 0 [pid 488] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 487] exit_group(0 [pid 486] exit_group(0 [pid 489] setpgid(0, 0 [pid 488] <... openat resumed>) = 3 [pid 487] <... exit_group resumed>) = ? [pid 486] <... exit_group resumed>) = ? [pid 489] <... setpgid resumed>) = 0 [pid 488] ioctl(3, BLKSECDISCARD, [0, 0] [pid 487] +++ exited with 0 +++ [pid 486] +++ exited with 0 +++ [pid 489] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 488] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=486, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=487, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 488] memfd_create("syzkaller", 0 [pid 489] <... openat resumed>) = 3 ./strace-static-x86_64: Process 490 attached [pid 488] <... memfd_create resumed>) = 4 [pid 489] write(3, "1000", 4 [pid 488] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 489] <... write resumed>) = 4 [pid 488] <... mmap resumed>) = 0x7f1bc18a3000 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 489] close(3 [pid 490] set_robust_list(0x5555574d4660, 24) = 0 [pid 490] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 490] setpgid(0, 0) = 0 [pid 490] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 488] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 360] <... openat resumed>) = 3 [pid 490] <... openat resumed>) = 3 [pid 359] <... openat resumed>) = 3 [pid 490] write(3, "1000", 4 [pid 359] ioctl(3, LOOP_CLR_FD [pid 490] <... write resumed>) = 4 [pid 490] close(3) = 0 [pid 490] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 360] ioctl(3, LOOP_CLR_FD [pid 359] <... ioctl resumed>) = 0 [pid 360] <... ioctl resumed>) = 0 [pid 359] close(3 [pid 490] <... openat resumed>) = 3 [pid 360] close(3 [pid 490] ioctl(3, BLKSECDISCARD, [0, 0] [pid 360] <... close resumed>) = 0 [pid 359] <... close resumed>) = 0 [pid 490] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 489] <... close resumed>) = 0 [pid 488] <... write resumed>) = 262144 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 491 attached [pid 490] memfd_create("syzkaller", 0 [pid 489] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 488] munmap(0x7f1bc18a3000, 138412032 [pid 490] <... memfd_create resumed>) = 4 [pid 490] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 491] set_robust_list(0x5555574d4660, 24 [pid 489] <... openat resumed>) = 3 [pid 488] <... munmap resumed>) = 0 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 492 [pid 490] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 ./strace-static-x86_64: Process 493 attached [pid 490] munmap(0x7f1bc18a3000, 138412032) = 0 [pid 493] set_robust_list(0x5555574d4660, 24) = 0 [pid 493] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 489] ioctl(3, BLKSECDISCARD, [0, 0] [pid 488] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 493 [pid 491] <... set_robust_list resumed>) = 0 [pid 489] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 488] <... openat resumed>) = 5 [pid 491] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 489] memfd_create("syzkaller", 0 [pid 488] ioctl(5, LOOP_SET_FD, 4 [pid 491] <... prctl resumed>) = 0 [pid 489] <... memfd_create resumed>) = 4 [pid 488] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 491] setpgid(0, 0 [pid 489] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 488] ioctl(5, LOOP_CLR_FD [pid 491] <... setpgid resumed>) = 0 [pid 489] <... mmap resumed>) = 0x7f1bc18a3000 [pid 488] <... ioctl resumed>) = 0 [pid 493] <... prctl resumed>) = 0 [pid 490] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 493] setpgid(0, 0 [pid 490] <... openat resumed>) = 5 [pid 493] <... setpgid resumed>) = 0 [pid 490] ioctl(5, LOOP_SET_FD, 4 [pid 493] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 490] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 492 attached [pid 493] <... openat resumed>) = 3 [pid 490] ioctl(5, LOOP_CLR_FD [pid 493] write(3, "1000", 4 [pid 492] set_robust_list(0x5555574d4660, 24 [pid 490] <... ioctl resumed>) = 0 [pid 493] <... write resumed>) = 4 [pid 492] <... set_robust_list resumed>) = 0 [pid 491] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 489] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 488] ioctl(5, LOOP_SET_FD, 4 [pid 493] close(3 [pid 492] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 493] <... close resumed>) = 0 [pid 493] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 492] <... prctl resumed>) = 0 [pid 493] <... openat resumed>) = 3 [pid 492] setpgid(0, 0 [pid 493] ioctl(3, BLKSECDISCARD, [0, 0] [pid 492] <... setpgid resumed>) = 0 [pid 488] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 493] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 492] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 491] <... openat resumed>) = 3 [pid 489] <... write resumed>) = 262144 [pid 488] close(5 [pid 493] memfd_create("syzkaller", 0 [pid 492] <... openat resumed>) = 3 [pid 491] write(3, "1000", 4 [pid 490] ioctl(5, LOOP_SET_FD, 4 [pid 489] munmap(0x7f1bc18a3000, 138412032 [pid 488] <... close resumed>) = 0 [pid 493] <... memfd_create resumed>) = 4 [pid 492] write(3, "1000", 4 [pid 490] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 488] close(4 [pid 493] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 492] <... write resumed>) = 4 [pid 491] <... write resumed>) = 4 [pid 490] close(5 [pid 489] <... munmap resumed>) = 0 [pid 493] <... mmap resumed>) = 0x7f1bc18a3000 [pid 492] close(3 [pid 490] <... close resumed>) = 0 [pid 493] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 492] <... close resumed>) = 0 [pid 491] close(3 [pid 490] close(4 [pid 489] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 488] <... close resumed>) = 0 [pid 493] <... write resumed>) = 262144 [pid 492] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 491] <... close resumed>) = 0 [pid 490] <... close resumed>) = 0 [pid 489] <... openat resumed>) = 5 [pid 488] exit_group(0 [pid 492] <... openat resumed>) = 3 [pid 491] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 490] exit_group(0 [pid 489] ioctl(5, LOOP_SET_FD, 4 [pid 488] <... exit_group resumed>) = ? [pid 492] ioctl(3, BLKSECDISCARD, [0, 0] [pid 491] <... openat resumed>) = 3 [pid 490] <... exit_group resumed>) = ? [pid 489] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 493] munmap(0x7f1bc18a3000, 138412032 [pid 492] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 491] ioctl(3, BLKSECDISCARD, [0, 0] [pid 490] +++ exited with 0 +++ [pid 489] ioctl(5, LOOP_CLR_FD [pid 488] +++ exited with 0 +++ [pid 493] <... munmap resumed>) = 0 [pid 492] memfd_create("syzkaller", 0 [pid 491] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 489] <... ioctl resumed>) = 0 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=490, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=488, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 493] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 492] <... memfd_create resumed>) = 4 [pid 491] memfd_create("syzkaller", 0 [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 493] <... openat resumed>) = 5 [pid 492] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 491] <... memfd_create resumed>) = 4 [pid 358] <... restart_syscall resumed>) = 0 [pid 493] ioctl(5, LOOP_SET_FD, 4 [pid 492] <... mmap resumed>) = 0x7f1bc18a3000 [pid 491] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 493] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 492] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 491] <... mmap resumed>) = 0x7f1bc18a3000 [pid 493] ioctl(5, LOOP_CLR_FD [pid 492] <... write resumed>) = 262144 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 493] <... ioctl resumed>) = 0 [pid 492] munmap(0x7f1bc18a3000, 138412032 [pid 491] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 489] ioctl(5, LOOP_SET_FD, 4 [pid 358] <... openat resumed>) = 3 [pid 492] <... munmap resumed>) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 358] ioctl(3, LOOP_CLR_FD [pid 492] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 361] <... openat resumed>) = 3 [pid 358] <... ioctl resumed>) = 0 [pid 492] <... openat resumed>) = 5 [pid 491] <... write resumed>) = 262144 [pid 489] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] ioctl(3, LOOP_CLR_FD [pid 358] close(3 [pid 492] ioctl(5, LOOP_SET_FD, 4 [pid 491] munmap(0x7f1bc18a3000, 138412032 [pid 489] close(5 [pid 361] <... ioctl resumed>) = 0 [pid 358] <... close resumed>) = 0 [pid 492] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 489] <... close resumed>) = 0 [pid 361] close(3 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 493] ioctl(5, LOOP_SET_FD, 4 [pid 492] ioctl(5, LOOP_CLR_FD [pid 491] <... munmap resumed>) = 0 [pid 489] close(4 [pid 361] <... close resumed>) = 0 [pid 493] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 492] <... ioctl resumed>) = 0 [pid 491] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 494 [pid 493] close(5 [pid 491] <... openat resumed>) = 5 [pid 489] <... close resumed>) = 0 [pid 493] <... close resumed>) = 0 [pid 491] ioctl(5, LOOP_SET_FD, 4 [pid 489] exit_group(0 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 495 [pid 493] close(4 [pid 491] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 489] <... exit_group resumed>) = ? [pid 493] <... close resumed>) = 0 [pid 491] ioctl(5, LOOP_CLR_FD [pid 493] exit_group(0 [pid 492] ioctl(5, LOOP_SET_FD, 4 [pid 493] <... exit_group resumed>) = ? [pid 492] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 493] +++ exited with 0 +++ [pid 492] close(5 [pid 491] <... ioctl resumed>) = 0 [pid 489] +++ exited with 0 +++ ./strace-static-x86_64: Process 494 attached [pid 492] <... close resumed>) = 0 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=493, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=489, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 494] set_robust_list(0x5555574d4660, 24 [pid 492] close(4 [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 494] <... set_robust_list resumed>) = 0 [pid 492] <... close resumed>) = 0 [pid 359] <... restart_syscall resumed>) = 0 [pid 494] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 492] exit_group(0 [pid 491] ioctl(5, LOOP_SET_FD, 4 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 494] <... prctl resumed>) = 0 [pid 492] <... exit_group resumed>) = ? [pid 491] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 357] <... openat resumed>) = 3 [pid 494] setpgid(0, 0 [pid 492] +++ exited with 0 +++ [pid 491] close(5 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 357] ioctl(3, LOOP_CLR_FD [pid 494] <... setpgid resumed>) = 0 [pid 491] <... close resumed>) = 0 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=492, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] <... openat resumed>) = 3 [pid 357] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 495 attached [pid 494] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 491] close(4 [pid 359] ioctl(3, LOOP_CLR_FD [pid 357] close(3 [pid 495] set_robust_list(0x5555574d4660, 24 [pid 357] <... close resumed>) = 0 [pid 495] <... set_robust_list resumed>) = 0 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 495] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 494] <... openat resumed>) = 3 [pid 491] <... close resumed>) = 0 [pid 359] <... ioctl resumed>) = 0 [pid 495] <... prctl resumed>) = 0 [pid 494] write(3, "1000", 4 [pid 491] exit_group(0 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 359] close(3 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 496 [pid 495] setpgid(0, 0 [pid 494] <... write resumed>) = 4 [pid 491] <... exit_group resumed>) = ? [pid 360] <... openat resumed>) = 3 [pid 359] <... close resumed>) = 0 [pid 495] <... setpgid resumed>) = 0 [pid 360] ioctl(3, LOOP_CLR_FD [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 495] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 491] +++ exited with 0 +++ [pid 360] <... ioctl resumed>) = 0 [pid 495] write(3, "1000", 4 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=491, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 495] <... write resumed>) = 4 [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 495] close(3) = 0 [pid 495] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 494] close(3 [pid 360] close(3 [pid 495] ioctl(3, BLKSECDISCARD, [0, 0] [pid 494] <... close resumed>) = 0 [pid 356] <... restart_syscall resumed>) = 0 [pid 360] <... close resumed>) = 0 [pid 495] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 494] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 497 [pid 495] memfd_create("syzkaller", 0 [pid 494] <... openat resumed>) = 3 [pid 495] <... memfd_create resumed>) = 4 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 495] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 494] ioctl(3, BLKSECDISCARD, [0, 0] [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 498 [pid 356] <... openat resumed>) = 3 [pid 495] <... mmap resumed>) = 0x7f1bc18a3000 [pid 494] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 356] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 496 attached [pid 495] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 494] memfd_create("syzkaller", 0 [pid 356] <... ioctl resumed>) = 0 [pid 496] set_robust_list(0x5555574d4660, 24 [pid 495] <... write resumed>) = 262144 [pid 494] <... memfd_create resumed>) = 4 [pid 356] close(3 [pid 496] <... set_robust_list resumed>) = 0 [pid 494] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 356] <... close resumed>) = 0 [pid 496] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 494] <... mmap resumed>) = 0x7f1bc18a3000 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 496] <... prctl resumed>) = 0 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 499 [pid 495] munmap(0x7f1bc18a3000, 138412032) = 0 [pid 494] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 496] setpgid(0, 0 [pid 495] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 5 ./strace-static-x86_64: Process 497 attached [pid 495] ioctl(5, LOOP_SET_FD, 4 [pid 497] set_robust_list(0x5555574d4660, 24 [pid 495] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 497] <... set_robust_list resumed>) = 0 [pid 495] ioctl(5, LOOP_CLR_FD [pid 494] <... write resumed>) = 262144 [pid 496] <... setpgid resumed>) = 0 [pid 497] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 495] <... ioctl resumed>) = 0 [pid 494] munmap(0x7f1bc18a3000, 138412032 [pid 496] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 497] <... prctl resumed>) = 0 [pid 494] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 498 attached [pid 497] setpgid(0, 0 [pid 496] <... openat resumed>) = 3 [pid 494] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 498] set_robust_list(0x5555574d4660, 24 [pid 497] <... setpgid resumed>) = 0 [pid 496] write(3, "1000", 4 [pid 494] <... openat resumed>) = 5 [pid 498] <... set_robust_list resumed>) = 0 [pid 497] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 496] <... write resumed>) = 4 [pid 494] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 499 attached [pid 498] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 497] <... openat resumed>) = 3 [pid 496] close(3 [pid 495] ioctl(5, LOOP_SET_FD, 4 [pid 494] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 499] set_robust_list(0x5555574d4660, 24 [pid 498] <... prctl resumed>) = 0 [pid 497] write(3, "1000", 4 [pid 496] <... close resumed>) = 0 [pid 495] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 494] ioctl(5, LOOP_CLR_FD [pid 499] <... set_robust_list resumed>) = 0 [pid 498] setpgid(0, 0 [pid 497] <... write resumed>) = 4 [pid 496] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 495] close(5 [pid 494] <... ioctl resumed>) = 0 [pid 499] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 498] <... setpgid resumed>) = 0 [pid 497] close(3 [pid 496] <... openat resumed>) = 3 [pid 495] <... close resumed>) = 0 [pid 499] <... prctl resumed>) = 0 [pid 498] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 497] <... close resumed>) = 0 [pid 496] ioctl(3, BLKSECDISCARD, [0, 0] [pid 495] close(4 [pid 499] setpgid(0, 0 [pid 498] <... openat resumed>) = 3 [pid 497] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 496] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 495] <... close resumed>) = 0 [pid 499] <... setpgid resumed>) = 0 [pid 498] write(3, "1000", 4 [pid 497] <... openat resumed>) = 3 [pid 496] memfd_create("syzkaller", 0 [pid 495] exit_group(0 [pid 494] ioctl(5, LOOP_SET_FD, 4 [pid 499] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 498] <... write resumed>) = 4 [pid 497] ioctl(3, BLKSECDISCARD, [0, 0] [pid 496] <... memfd_create resumed>) = 4 [pid 495] <... exit_group resumed>) = ? [pid 494] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 499] <... openat resumed>) = 3 [pid 498] close(3 [pid 497] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 496] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 495] +++ exited with 0 +++ [pid 494] close(5 [pid 499] write(3, "1000", 4 [pid 498] <... close resumed>) = 0 [pid 497] memfd_create("syzkaller", 0 [pid 496] <... mmap resumed>) = 0x7f1bc18a3000 [pid 494] <... close resumed>) = 0 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=495, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 499] <... write resumed>) = 4 [pid 498] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 497] <... memfd_create resumed>) = 4 [pid 498] <... openat resumed>) = 3 [pid 497] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 498] ioctl(3, BLKSECDISCARD, [0, 0] [pid 497] <... mmap resumed>) = 0x7f1bc18a3000 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 499] close(3 [pid 498] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 497] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 496] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 494] close(4 [pid 361] <... openat resumed>) = 3 [pid 499] <... close resumed>) = 0 [pid 498] memfd_create("syzkaller", 0 [pid 497] <... write resumed>) = 262144 [pid 361] ioctl(3, LOOP_CLR_FD [pid 498] <... memfd_create resumed>) = 4 [pid 497] munmap(0x7f1bc18a3000, 138412032 [pid 361] <... ioctl resumed>) = 0 [pid 498] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 497] <... munmap resumed>) = 0 [pid 361] close(3 [pid 498] <... mmap resumed>) = 0x7f1bc18a3000 [pid 497] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 496] <... write resumed>) = 262144 [pid 361] <... close resumed>) = 0 [pid 499] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 498] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 497] <... openat resumed>) = 5 [pid 496] munmap(0x7f1bc18a3000, 138412032 [pid 494] <... close resumed>) = 0 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 499] <... openat resumed>) = 3 [pid 498] <... write resumed>) = 262144 [pid 497] ioctl(5, LOOP_SET_FD, 4 [pid 496] <... munmap resumed>) = 0 [pid 498] munmap(0x7f1bc18a3000, 138412032 [pid 497] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 500 [pid 498] <... munmap resumed>) = 0 [pid 497] ioctl(5, LOOP_CLR_FD [pid 498] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 497] <... ioctl resumed>) = 0 [pid 498] <... openat resumed>) = 5 [pid 498] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 498] ioctl(5, LOOP_CLR_FD) = 0 [pid 497] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 497] close(5) = 0 [pid 497] close(4) = 0 [pid 498] ioctl(5, LOOP_SET_FD, 4 [pid 497] exit_group(0 [pid 498] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 497] <... exit_group resumed>) = ? [pid 499] ioctl(3, BLKSECDISCARD, [0, 0] [pid 498] close(5 [pid 497] +++ exited with 0 +++ [pid 494] exit_group(0 [pid 499] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 498] <... close resumed>) = 0 [pid 496] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 494] <... exit_group resumed>) = ? [pid 499] memfd_create("syzkaller", 0 [pid 498] close(4 [pid 496] <... openat resumed>) = 5 [pid 499] <... memfd_create resumed>) = 4 [pid 498] <... close resumed>) = 0 [pid 496] ioctl(5, LOOP_SET_FD, 4 [pid 494] +++ exited with 0 +++ [pid 359] --- 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] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 498] exit_group(0 [pid 496] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=494, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 499] <... mmap resumed>) = 0x7f1bc18a3000 [pid 498] <... exit_group resumed>) = ? [pid 496] ioctl(5, LOOP_CLR_FD [pid 359] <... restart_syscall resumed>) = 0 [pid 498] +++ exited with 0 +++ [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 358] ioctl(3, LOOP_CLR_FD) = 0 [pid 358] close(3 [pid 499] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 496] <... ioctl resumed>) = 0 [pid 358] <... close resumed>) = 0 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555574d4650) = 501 [pid 499] <... write resumed>) = 262144 [pid 499] munmap(0x7f1bc18a3000, 138412032 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=498, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 360] <... openat resumed>) = 3 [pid 359] <... openat resumed>) = 3 [pid 360] ioctl(3, LOOP_CLR_FD [pid 359] ioctl(3, LOOP_CLR_FD [pid 360] <... ioctl resumed>) = 0 [pid 359] <... ioctl resumed>) = 0 [pid 499] <... munmap resumed>) = 0 [pid 360] close(3 [pid 359] close(3 [pid 499] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 360] <... close resumed>) = 0 [pid 359] <... close resumed>) = 0 [pid 499] <... openat resumed>) = 5 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 499] ioctl(5, LOOP_SET_FD, 4 [pid 496] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 501 attached [pid 501] set_robust_list(0x5555574d4660, 24) = 0 [pid 496] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 502 [pid 499] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 499] ioctl(5, LOOP_CLR_FD [pid 496] close(5 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 503 [pid 499] <... ioctl resumed>) = 0 [pid 496] <... close resumed>) = 0 [pid 496] close(4 [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 496] <... close resumed>) = 0 [pid 499] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 496] exit_group(0 [pid 499] close(5 [pid 496] <... exit_group resumed>) = ? [pid 499] <... close resumed>) = 0 [pid 501] <... openat resumed>) = 3 [pid 501] write(3, "1000", 4 [pid 496] +++ exited with 0 +++ [pid 499] close(4 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=496, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 499] <... close resumed>) = 0 [pid 357] <... openat resumed>) = 3 [pid 501] <... write resumed>) = 4 [pid 499] exit_group(0 [pid 357] ioctl(3, LOOP_CLR_FD [pid 501] close(3 [pid 499] <... exit_group resumed>) = ? [pid 357] <... ioctl resumed>) = 0 [pid 501] <... close resumed>) = 0 [pid 357] close(3 [pid 501] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 357] <... close resumed>) = 0 [pid 501] <... openat resumed>) = 3 [pid 499] +++ exited with 0 +++ [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 501] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 504 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=499, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 501] memfd_create("syzkaller", 0 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 501] <... memfd_create resumed>) = 4 [pid 356] <... openat resumed>) = 3 ./strace-static-x86_64: Process 500 attached [pid 501] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 356] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 503 attached [pid 501] <... mmap resumed>) = 0x7f1bc18a3000 [pid 356] <... ioctl resumed>) = 0 [pid 503] set_robust_list(0x5555574d4660, 24 [pid 501] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 500] set_robust_list(0x5555574d4660, 24 [pid 356] close(3./strace-static-x86_64: Process 502 attached [pid 503] <... set_robust_list resumed>) = 0 [pid 500] <... set_robust_list resumed>) = 0 [pid 356] <... close resumed>) = 0 [pid 503] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 502] set_robust_list(0x5555574d4660, 24 [pid 500] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 503] <... prctl resumed>) = 0 [pid 502] <... set_robust_list resumed>) = 0 [pid 500] <... prctl resumed>) = 0 [pid 503] setpgid(0, 0 [pid 502] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 501] <... write resumed>) = 262144 [pid 500] setpgid(0, 0 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 505 [pid 503] <... setpgid resumed>) = 0 [pid 502] <... prctl resumed>) = 0 [pid 500] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 505 attached [pid 503] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 502] setpgid(0, 0 [pid 500] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 503] <... openat resumed>) = 3 [pid 502] <... setpgid resumed>) = 0 [pid 500] <... openat resumed>) = 3 [pid 505] set_robust_list(0x5555574d4660, 24 [pid 503] write(3, "1000", 4 [pid 502] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 500] write(3, "1000", 4 [pid 503] <... write resumed>) = 4 ./strace-static-x86_64: Process 504 attached [pid 505] <... set_robust_list resumed>) = 0 [pid 503] close(3 [pid 502] <... openat resumed>) = 3 [pid 500] <... write resumed>) = 4 [pid 505] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 504] set_robust_list(0x5555574d4660, 24 [pid 503] <... close resumed>) = 0 [pid 502] write(3, "1000", 4 [pid 501] munmap(0x7f1bc18a3000, 138412032 [pid 500] close(3 [pid 505] <... prctl resumed>) = 0 [pid 504] <... set_robust_list resumed>) = 0 [pid 503] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 502] <... write resumed>) = 4 [pid 501] <... munmap resumed>) = 0 [pid 500] <... close resumed>) = 0 [pid 505] setpgid(0, 0 [pid 504] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 503] <... openat resumed>) = 3 [pid 502] close(3 [pid 501] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 500] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 505] <... setpgid resumed>) = 0 [pid 504] <... prctl resumed>) = 0 [pid 503] ioctl(3, BLKSECDISCARD, [0, 0] [pid 502] <... close resumed>) = 0 [pid 501] <... openat resumed>) = 5 [pid 500] <... openat resumed>) = 3 [pid 505] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 504] setpgid(0, 0 [pid 503] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 502] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 501] ioctl(5, LOOP_SET_FD, 4 [pid 500] ioctl(3, BLKSECDISCARD, [0, 0] [pid 505] <... openat resumed>) = 3 [pid 504] <... setpgid resumed>) = 0 [pid 503] memfd_create("syzkaller", 0 [pid 502] <... openat resumed>) = 3 [pid 501] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 500] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 505] write(3, "1000", 4 [pid 504] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 503] <... memfd_create resumed>) = 4 [pid 502] ioctl(3, BLKSECDISCARD, [0, 0] [pid 501] ioctl(5, LOOP_CLR_FD [pid 500] memfd_create("syzkaller", 0 [pid 505] <... write resumed>) = 4 [pid 504] <... openat resumed>) = 3 [pid 503] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 502] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 501] <... ioctl resumed>) = 0 [pid 500] <... memfd_create resumed>) = 4 [pid 505] close(3 [pid 504] write(3, "1000", 4 [pid 503] <... mmap resumed>) = 0x7f1bc18a3000 [pid 502] memfd_create("syzkaller", 0 [pid 500] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 505] <... close resumed>) = 0 [pid 504] <... write resumed>) = 4 [pid 503] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 502] <... memfd_create resumed>) = 4 [pid 500] <... mmap resumed>) = 0x7f1bc18a3000 [pid 505] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 504] close(3 [pid 503] <... write resumed>) = 262144 [pid 502] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 504] <... close resumed>) = 0 [pid 503] munmap(0x7f1bc18a3000, 138412032 [pid 501] ioctl(5, LOOP_SET_FD, 4 [pid 504] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 503] <... munmap resumed>) = 0 [pid 501] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 504] <... openat resumed>) = 3 [pid 503] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 501] close(5 [pid 504] ioctl(3, BLKSECDISCARD, [0, 0] [pid 503] <... openat resumed>) = 5 [pid 501] <... close resumed>) = 0 [pid 500] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 505] <... openat resumed>) = 3 [pid 504] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 503] ioctl(5, LOOP_SET_FD, 4 [pid 502] <... mmap resumed>) = 0x7f1bc18a3000 [pid 501] close(4 [pid 505] ioctl(3, BLKSECDISCARD, [0, 0] [pid 504] memfd_create("syzkaller", 0 [pid 503] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 501] <... close resumed>) = 0 [pid 500] <... write resumed>) = 262144 [pid 504] <... memfd_create resumed>) = 4 [pid 503] ioctl(5, LOOP_CLR_FD [pid 501] exit_group(0 [pid 504] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 503] <... ioctl resumed>) = 0 [pid 501] <... exit_group resumed>) = ? [pid 505] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 504] <... mmap resumed>) = 0x7f1bc18a3000 [pid 502] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 501] +++ exited with 0 +++ [pid 500] munmap(0x7f1bc18a3000, 138412032 [pid 505] memfd_create("syzkaller", 0 [pid 504] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=501, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 505] <... memfd_create resumed>) = 4 [pid 504] <... write resumed>) = 262144 [pid 502] <... write resumed>) = 262144 [pid 500] <... munmap resumed>) = 0 [pid 505] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 504] munmap(0x7f1bc18a3000, 138412032 [pid 503] ioctl(5, LOOP_SET_FD, 4 [pid 502] munmap(0x7f1bc18a3000, 138412032 [pid 500] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 505] <... mmap resumed>) = 0x7f1bc18a3000 [pid 504] <... munmap resumed>) = 0 [pid 503] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 504] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 503] close(5 [pid 502] <... munmap resumed>) = 0 [pid 500] <... openat resumed>) = 5 [pid 358] <... openat resumed>) = 3 [pid 504] <... openat resumed>) = 5 [pid 503] <... close resumed>) = 0 [pid 358] ioctl(3, LOOP_CLR_FD [pid 504] ioctl(5, LOOP_SET_FD, 4 [pid 503] close(4 [pid 358] <... ioctl resumed>) = 0 [pid 505] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 504] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 503] <... close resumed>) = 0 [pid 502] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 500] ioctl(5, LOOP_SET_FD, 4 [pid 358] close(3 [pid 504] ioctl(5, LOOP_CLR_FD [pid 503] exit_group(0 [pid 358] <... close resumed>) = 0 [pid 504] <... ioctl resumed>) = 0 [pid 503] <... exit_group resumed>) = ? [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 505] <... write resumed>) = 262144 [pid 503] +++ exited with 0 +++ [pid 502] <... openat resumed>) = 5 [pid 500] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 505] munmap(0x7f1bc18a3000, 138412032 [pid 502] ioctl(5, LOOP_SET_FD, 4 [pid 500] ioctl(5, LOOP_CLR_FD [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 506 [pid 505] <... munmap resumed>) = 0 [pid 502] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 505] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 502] ioctl(5, LOOP_CLR_FD [pid 500] <... ioctl resumed>) = 0 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=503, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 505] <... openat resumed>) = 5 [pid 502] <... ioctl resumed>) = 0 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 505] ioctl(5, LOOP_SET_FD, 4 [pid 504] ioctl(5, LOOP_SET_FD, 4 [pid 359] <... openat resumed>) = 3 [pid 505] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 504] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] ioctl(3, LOOP_CLR_FD [pid 505] ioctl(5, LOOP_CLR_FD [pid 504] close(5 [pid 359] <... ioctl resumed>) = 0 [pid 505] <... ioctl resumed>) = 0 [pid 504] <... close resumed>) = 0 [pid 359] close(3 [pid 504] close(4 [pid 500] ioctl(5, LOOP_SET_FD, 4 [pid 359] <... close resumed>) = 0 ./strace-static-x86_64: Process 506 attached [pid 504] <... close resumed>) = 0 [pid 502] ioctl(5, LOOP_SET_FD, 4 [pid 500] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 506] set_robust_list(0x5555574d4660, 24 [pid 505] ioctl(5, LOOP_SET_FD, 4 [pid 504] exit_group(0 [pid 502] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 500] close(5 [pid 504] <... exit_group resumed>) = ? [pid 506] <... set_robust_list resumed>) = 0 [pid 505] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 504] +++ exited with 0 +++ [pid 502] close(5 [pid 500] <... close resumed>) = 0 [pid 506] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 505] close(5 [pid 502] <... close resumed>) = 0 [pid 500] close(4 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 507 [pid 505] <... close resumed>) = 0 [pid 502] close(4 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=504, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 500] <... close resumed>) = 0 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 357] ioctl(3, LOOP_CLR_FD) = 0 [pid 357] close(3) = 0 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 506] <... prctl resumed>) = 0 [pid 505] close(4 [pid 502] <... close resumed>) = 0 [pid 500] exit_group(0 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 508 ./strace-static-x86_64: Process 507 attached [pid 505] <... close resumed>) = 0 [pid 506] setpgid(0, 0 [pid 505] exit_group(0 [pid 502] exit_group(0 [pid 500] <... exit_group resumed>) = ? [pid 506] <... setpgid resumed>) = 0 [pid 505] <... exit_group resumed>) = ? [pid 502] <... exit_group resumed>) = ? [pid 507] set_robust_list(0x5555574d4660, 24 [pid 500] +++ exited with 0 +++ [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=500, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 507] <... set_robust_list resumed>) = 0 [pid 502] +++ exited with 0 +++ [pid 361] <... restart_syscall resumed>) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 361] ioctl(3, LOOP_CLR_FD) = 0 [pid 361] close(3 [pid 505] +++ exited with 0 +++ [pid 361] <... close resumed>) = 0 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=502, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 506] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 356] --- 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] <... openat resumed>) = 3 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 506] write(3, "1000", 4 [pid 356] <... restart_syscall resumed>) = 0 [pid 506] <... write resumed>) = 4 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 509 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 506] close(3 [pid 360] <... openat resumed>) = 3 [pid 506] <... close resumed>) = 0 [pid 360] ioctl(3, LOOP_CLR_FD [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 506] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 360] <... ioctl resumed>) = 0 [pid 356] <... openat resumed>) = 3 [pid 506] <... openat resumed>) = 3 [pid 360] close(3 [pid 356] ioctl(3, LOOP_CLR_FD [pid 506] ioctl(3, BLKSECDISCARD, [0, 0] [pid 360] <... close resumed>) = 0 [pid 356] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 508 attached [pid 507] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 506] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] close(3 [pid 507] <... prctl resumed>) = 0 [pid 506] memfd_create("syzkaller", 0 [pid 356] <... close resumed>) = 0 [pid 507] setpgid(0, 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 508] set_robust_list(0x5555574d4660, 24 [pid 507] <... setpgid resumed>) = 0 [pid 506] <... memfd_create resumed>) = 4 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 510 ./strace-static-x86_64: Process 509 attached [pid 508] <... set_robust_list resumed>) = 0 [pid 507] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 506] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 511 [pid 509] set_robust_list(0x5555574d4660, 24 [pid 508] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 507] <... openat resumed>) = 3 [pid 506] <... mmap resumed>) = 0x7f1bc18a3000 [pid 507] write(3, "1000", 4) = 4 [pid 507] close(3) = 0 [pid 507] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 507] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 507] memfd_create("syzkaller", 0) = 4 [pid 506] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 507] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 ./strace-static-x86_64: Process 511 attached [pid 509] <... set_robust_list resumed>) = 0 [pid 508] <... prctl resumed>) = 0 [pid 507] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 506] <... write resumed>) = 262144 [pid 511] set_robust_list(0x5555574d4660, 24 [pid 509] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 508] setpgid(0, 0 [pid 506] munmap(0x7f1bc18a3000, 138412032./strace-static-x86_64: Process 510 attached [pid 511] <... set_robust_list resumed>) = 0 [pid 509] <... prctl resumed>) = 0 [pid 508] <... setpgid resumed>) = 0 [pid 506] <... munmap resumed>) = 0 [pid 511] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 510] set_robust_list(0x5555574d4660, 24 [pid 509] setpgid(0, 0 [pid 508] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 506] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 510] <... set_robust_list resumed>) = 0 [pid 509] <... setpgid resumed>) = 0 [pid 506] <... openat resumed>) = 5 [pid 511] <... prctl resumed>) = 0 [pid 510] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 509] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 508] <... openat resumed>) = 3 [pid 507] <... write resumed>) = 262144 [pid 506] ioctl(5, LOOP_SET_FD, 4 [pid 510] <... prctl resumed>) = 0 [pid 510] setpgid(0, 0) = 0 [pid 510] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 510] write(3, "1000", 4 [pid 507] munmap(0x7f1bc18a3000, 138412032 [pid 510] <... write resumed>) = 4 [pid 507] <... munmap resumed>) = 0 [pid 510] close(3) = 0 [pid 507] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 510] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 507] <... openat resumed>) = 5 [pid 510] <... openat resumed>) = 3 [pid 507] ioctl(5, LOOP_SET_FD, 4 [pid 510] ioctl(3, BLKSECDISCARD, [0, 0] [pid 507] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 510] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 507] ioctl(5, LOOP_CLR_FD [pid 510] memfd_create("syzkaller", 0 [pid 507] <... ioctl resumed>) = 0 [pid 510] <... memfd_create resumed>) = 4 [pid 510] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 511] setpgid(0, 0 [pid 510] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 509] <... openat resumed>) = 3 [pid 508] write(3, "1000", 4 [pid 506] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 511] <... setpgid resumed>) = 0 [pid 510] <... write resumed>) = 262144 [pid 509] write(3, "1000", 4 [pid 508] <... write resumed>) = 4 [pid 507] ioctl(5, LOOP_SET_FD, 4 [pid 506] ioctl(5, LOOP_CLR_FD [pid 511] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 509] <... write resumed>) = 4 [pid 508] close(3 [pid 507] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 506] <... ioctl resumed>) = 0 [pid 511] <... openat resumed>) = 3 [pid 509] close(3 [pid 508] <... close resumed>) = 0 [pid 507] close(5 [pid 511] write(3, "1000", 4 [pid 509] <... close resumed>) = 0 [pid 508] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 507] <... close resumed>) = 0 [pid 511] <... write resumed>) = 4 [pid 509] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 508] <... openat resumed>) = 3 [pid 507] close(4 [pid 511] close(3 [pid 509] <... openat resumed>) = 3 [pid 508] ioctl(3, BLKSECDISCARD, [0, 0] [pid 507] <... close resumed>) = 0 [pid 511] <... close resumed>) = 0 [pid 510] munmap(0x7f1bc18a3000, 138412032 [pid 509] ioctl(3, BLKSECDISCARD, [0, 0] [pid 508] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 507] exit_group(0 [pid 506] ioctl(5, LOOP_SET_FD, 4 [pid 511] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 510] <... munmap resumed>) = 0 [pid 509] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 508] memfd_create("syzkaller", 0 [pid 507] <... exit_group resumed>) = ? [pid 506] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 511] <... openat resumed>) = 3 [pid 510] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 509] memfd_create("syzkaller", 0 [pid 508] <... memfd_create resumed>) = 4 [pid 507] +++ exited with 0 +++ [pid 506] close(5 [pid 511] ioctl(3, BLKSECDISCARD, [0, 0] [pid 510] <... openat resumed>) = 5 [pid 509] <... memfd_create resumed>) = 4 [pid 508] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 506] <... close resumed>) = 0 [pid 511] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 510] ioctl(5, LOOP_SET_FD, 4 [pid 509] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 508] <... mmap resumed>) = 0x7f1bc18a3000 [pid 506] close(4 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=507, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 510] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 509] <... mmap resumed>) = 0x7f1bc18a3000 [pid 510] ioctl(5, LOOP_CLR_FD) = 0 [pid 511] memfd_create("syzkaller", 0) = 4 [pid 508] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 511] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 506] <... close resumed>) = 0 [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 511] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 510] ioctl(5, LOOP_SET_FD, 4 [pid 509] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 506] exit_group(0 [pid 359] <... restart_syscall resumed>) = 0 [pid 511] <... write resumed>) = 262144 [pid 510] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 508] <... write resumed>) = 262144 [pid 511] munmap(0x7f1bc18a3000, 138412032 [pid 510] close(5 [pid 511] <... munmap resumed>) = 0 [pid 510] <... close resumed>) = 0 [pid 511] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 510] close(4 [pid 509] <... write resumed>) = 262144 [pid 508] munmap(0x7f1bc18a3000, 138412032 [pid 506] <... exit_group resumed>) = ? [pid 511] <... openat resumed>) = 5 [pid 510] <... close resumed>) = 0 [pid 509] munmap(0x7f1bc18a3000, 138412032 [pid 511] ioctl(5, LOOP_SET_FD, 4 [pid 510] exit_group(0 [pid 508] <... munmap resumed>) = 0 [pid 511] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 510] <... exit_group resumed>) = ? [pid 511] ioctl(5, LOOP_CLR_FD [pid 510] +++ exited with 0 +++ [pid 506] +++ exited with 0 +++ [pid 511] <... ioctl resumed>) = 0 [pid 509] <... munmap resumed>) = 0 [pid 508] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=506, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 509] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 508] <... openat resumed>) = 5 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=510, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] <... openat resumed>) = 3 [pid 509] <... openat resumed>) = 5 [pid 508] ioctl(5, LOOP_SET_FD, 4 [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 359] ioctl(3, LOOP_CLR_FD [pid 509] ioctl(5, LOOP_SET_FD, 4 [pid 508] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] <... restart_syscall resumed>) = 0 [pid 359] <... ioctl resumed>) = 0 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 509] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 508] ioctl(5, LOOP_CLR_FD [pid 359] close(3 [pid 358] <... openat resumed>) = 3 [pid 511] ioctl(5, LOOP_SET_FD, 4 [pid 509] ioctl(5, LOOP_CLR_FD [pid 508] <... ioctl resumed>) = 0 [pid 359] <... close resumed>) = 0 [pid 358] ioctl(3, LOOP_CLR_FD [pid 511] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 509] <... ioctl resumed>) = 0 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] <... ioctl resumed>) = 0 [pid 511] close(5 [pid 360] <... openat resumed>) = 3 [pid 358] close(3 [pid 511] <... close resumed>) = 0 [pid 360] ioctl(3, LOOP_CLR_FD [pid 358] <... close resumed>) = 0 [pid 511] close(4 [pid 360] <... ioctl resumed>) = 0 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 512 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 511] <... close resumed>) = 0 [pid 360] close(3 [pid 511] exit_group(0 [pid 509] ioctl(5, LOOP_SET_FD, 4 [pid 508] ioctl(5, LOOP_SET_FD, 4 [pid 360] <... close resumed>) = 0 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 513 [pid 511] <... exit_group resumed>) = ? [pid 509] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 508] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 511] +++ exited with 0 +++ [pid 509] close(5 [pid 508] close(5 [pid 509] <... close resumed>) = 0 [pid 508] <... close resumed>) = 0 [pid 509] close(4 [pid 508] close(4 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 514 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=511, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 514 attached ) = 0 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 509] <... close resumed>) = 0 [pid 356] ioctl(3, LOOP_CLR_FD) = 0 [pid 356] close(3) = 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 509] exit_group(0 [pid 508] <... close resumed>) = 0 [pid 509] <... exit_group resumed>) = ? [pid 508] exit_group(0 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 515 [pid 509] +++ exited with 0 +++ [pid 508] <... exit_group resumed>) = ? [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=509, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 513 attached [pid 514] set_robust_list(0x5555574d4660, 24) = 0 [pid 514] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 508] +++ exited with 0 +++ [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=508, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 513] set_robust_list(0x5555574d4660, 24 [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 513] <... set_robust_list resumed>) = 0 [pid 357] <... restart_syscall resumed>) = 0 [pid 513] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 513] <... prctl resumed>) = 0 [pid 361] <... openat resumed>) = 3 [pid 361] ioctl(3, LOOP_CLR_FD [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 514] <... prctl resumed>) = 0 [pid 513] setpgid(0, 0 [pid 361] <... ioctl resumed>) = 0 [pid 357] <... openat resumed>) = 3 ./strace-static-x86_64: Process 515 attached [pid 514] setpgid(0, 0 [pid 513] <... setpgid resumed>) = 0 [pid 361] close(3 [pid 357] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 512 attached [pid 514] <... setpgid resumed>) = 0 [pid 513] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 361] <... close resumed>) = 0 [pid 357] <... ioctl resumed>) = 0 [pid 515] set_robust_list(0x5555574d4660, 24 [pid 514] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 512] set_robust_list(0x5555574d4660, 24 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 513] <... openat resumed>) = 3 [pid 357] close(3 [pid 515] <... set_robust_list resumed>) = 0 [pid 514] <... openat resumed>) = 3 [pid 513] write(3, "1000", 4 [pid 512] <... set_robust_list resumed>) = 0 [pid 357] <... close resumed>) = 0 [pid 515] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 514] write(3, "1000", 4 [pid 513] <... write resumed>) = 4 [pid 512] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 516 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 516 attached [pid 515] <... prctl resumed>) = 0 [pid 514] <... write resumed>) = 4 [pid 513] close(3 [pid 512] <... prctl resumed>) = 0 [pid 516] set_robust_list(0x5555574d4660, 24 [pid 515] setpgid(0, 0 [pid 514] close(3 [pid 513] <... close resumed>) = 0 [pid 512] setpgid(0, 0 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 517 [pid 516] <... set_robust_list resumed>) = 0 [pid 515] <... setpgid resumed>) = 0 [pid 514] <... close resumed>) = 0 [pid 513] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 512] <... setpgid resumed>) = 0 [pid 516] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 515] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 514] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 513] <... openat resumed>) = 3 [pid 512] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 516] <... prctl resumed>) = 0 [pid 515] <... openat resumed>) = 3 [pid 514] <... openat resumed>) = 3 [pid 513] ioctl(3, BLKSECDISCARD, [0, 0] [pid 512] <... openat resumed>) = 3 [pid 516] setpgid(0, 0 [pid 515] write(3, "1000", 4 [pid 514] ioctl(3, BLKSECDISCARD, [0, 0] [pid 513] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 512] write(3, "1000", 4 [pid 516] <... setpgid resumed>) = 0 [pid 515] <... write resumed>) = 4 [pid 514] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 513] memfd_create("syzkaller", 0 [pid 512] <... write resumed>) = 4 [pid 516] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 515] close(3 [pid 514] memfd_create("syzkaller", 0 [pid 513] <... memfd_create resumed>) = 4 [pid 512] close(3 [pid 516] <... openat resumed>) = 3 [pid 515] <... close resumed>) = 0 [pid 514] <... memfd_create resumed>) = 4 [pid 513] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 512] <... close resumed>) = 0 [pid 516] write(3, "1000", 4 [pid 515] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 514] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 513] <... mmap resumed>) = 0x7f1bc18a3000 [pid 512] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT./strace-static-x86_64: Process 517 attached [pid 516] <... write resumed>) = 4 [pid 515] <... openat resumed>) = 3 [pid 514] <... mmap resumed>) = 0x7f1bc18a3000 [pid 512] <... openat resumed>) = 3 [pid 517] set_robust_list(0x5555574d4660, 24 [pid 516] close(3 [pid 515] ioctl(3, BLKSECDISCARD, [0, 0] [pid 514] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 513] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 512] ioctl(3, BLKSECDISCARD, [0, 0] [pid 517] <... set_robust_list resumed>) = 0 [pid 516] <... close resumed>) = 0 [pid 515] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 514] <... write resumed>) = 262144 [pid 513] <... write resumed>) = 262144 [pid 512] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 517] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 516] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 515] memfd_create("syzkaller", 0 [pid 514] munmap(0x7f1bc18a3000, 138412032 [pid 513] munmap(0x7f1bc18a3000, 138412032 [pid 512] memfd_create("syzkaller", 0 [pid 517] <... prctl resumed>) = 0 [pid 516] <... openat resumed>) = 3 [pid 515] <... memfd_create resumed>) = 4 [pid 514] <... munmap resumed>) = 0 [pid 513] <... munmap resumed>) = 0 [pid 512] <... memfd_create resumed>) = 4 [pid 517] setpgid(0, 0 [pid 516] ioctl(3, BLKSECDISCARD, [0, 0] [pid 515] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 514] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 513] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 512] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 517] <... setpgid resumed>) = 0 [pid 516] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 515] <... mmap resumed>) = 0x7f1bc18a3000 [pid 514] <... openat resumed>) = 5 [pid 513] <... openat resumed>) = 5 [pid 512] <... mmap resumed>) = 0x7f1bc18a3000 [pid 517] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 516] memfd_create("syzkaller", 0 [pid 515] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 514] ioctl(5, LOOP_SET_FD, 4 [pid 513] ioctl(5, LOOP_SET_FD, 4 [pid 512] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 517] <... openat resumed>) = 3 [pid 516] <... memfd_create resumed>) = 4 [pid 515] <... write resumed>) = 262144 [pid 514] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 513] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 512] <... write resumed>) = 262144 [pid 517] write(3, "1000", 4 [pid 516] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 515] munmap(0x7f1bc18a3000, 138412032 [pid 514] ioctl(5, LOOP_CLR_FD [pid 513] ioctl(5, LOOP_CLR_FD [pid 512] munmap(0x7f1bc18a3000, 138412032 [pid 517] <... write resumed>) = 4 [pid 516] <... mmap resumed>) = 0x7f1bc18a3000 [pid 515] <... munmap resumed>) = 0 [pid 514] <... ioctl resumed>) = 0 [pid 513] <... ioctl resumed>) = 0 [pid 512] <... munmap resumed>) = 0 [pid 517] close(3 [pid 512] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 517] <... close resumed>) = 0 [pid 512] <... openat resumed>) = 5 [pid 517] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 512] ioctl(5, LOOP_SET_FD, 4 [pid 517] <... openat resumed>) = 3 [pid 512] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 517] ioctl(3, BLKSECDISCARD, [0, 0] [pid 514] ioctl(5, LOOP_SET_FD, 4 [pid 512] ioctl(5, LOOP_CLR_FD [pid 517] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 516] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 515] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 514] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 512] <... ioctl resumed>) = 0 [pid 517] memfd_create("syzkaller", 0 [pid 514] close(5 [pid 517] <... memfd_create resumed>) = 4 [pid 514] <... close resumed>) = 0 [pid 517] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 514] close(4 [pid 517] <... mmap resumed>) = 0x7f1bc18a3000 [pid 516] <... write resumed>) = 262144 [pid 515] <... openat resumed>) = 5 [pid 514] <... close resumed>) = 0 [pid 517] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 516] munmap(0x7f1bc18a3000, 138412032 [pid 515] ioctl(5, LOOP_SET_FD, 4 [pid 514] exit_group(0 [pid 513] ioctl(5, LOOP_SET_FD, 4 [pid 512] ioctl(5, LOOP_SET_FD, 4 [pid 517] <... write resumed>) = 262144 [pid 516] <... munmap resumed>) = 0 [pid 515] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 514] <... exit_group resumed>) = ? [pid 513] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 512] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 517] munmap(0x7f1bc18a3000, 138412032 [pid 516] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 515] ioctl(5, LOOP_CLR_FD [pid 514] +++ exited with 0 +++ [pid 513] close(5 [pid 512] close(5 [pid 517] <... munmap resumed>) = 0 [pid 516] <... openat resumed>) = 5 [pid 515] <... ioctl resumed>) = 0 [pid 513] <... close resumed>) = 0 [pid 512] <... close resumed>) = 0 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=514, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 517] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 516] ioctl(5, LOOP_SET_FD, 4 [pid 513] close(4 [pid 512] close(4 [pid 517] <... openat resumed>) = 5 [pid 516] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 513] <... close resumed>) = 0 [pid 512] <... close resumed>) = 0 [pid 517] ioctl(5, LOOP_SET_FD, 4 [pid 516] ioctl(5, LOOP_CLR_FD [pid 515] ioctl(5, LOOP_SET_FD, 4 [pid 513] exit_group(0 [pid 512] exit_group(0 [pid 517] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 516] <... ioctl resumed>) = 0 [pid 515] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 513] <... exit_group resumed>) = ? [pid 512] <... exit_group resumed>) = ? [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 517] ioctl(5, LOOP_CLR_FD [pid 515] close(5 [pid 513] +++ exited with 0 +++ [pid 512] +++ exited with 0 +++ [pid 360] <... openat resumed>) = 3 [pid 517] <... ioctl resumed>) = 0 [pid 515] <... close resumed>) = 0 [pid 360] ioctl(3, LOOP_CLR_FD [pid 515] close(4 [pid 360] <... ioctl resumed>) = 0 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=512, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=513, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 515] <... close resumed>) = 0 [pid 360] close(3 [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 517] ioctl(5, LOOP_SET_FD, 4 [pid 516] ioctl(5, LOOP_SET_FD, 4 [pid 515] exit_group(0 [pid 360] <... close resumed>) = 0 [pid 359] <... restart_syscall resumed>) = 0 [pid 358] <... restart_syscall resumed>) = 0 [pid 517] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 516] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 515] <... exit_group resumed>) = ? [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 517] close(5 [pid 516] close(5 [pid 515] +++ exited with 0 +++ [pid 517] <... close resumed>) = 0 [pid 516] <... close resumed>) = 0 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 517] close(4 [pid 516] close(4 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 518 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 358] <... openat resumed>) = 3 [pid 356] --- 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] <... close resumed>) = 0 [pid 358] ioctl(3, LOOP_CLR_FD [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 517] exit_group(0 [pid 358] <... ioctl resumed>) = 0 [pid 356] <... restart_syscall resumed>) = 0 [pid 517] <... exit_group resumed>) = ? [pid 516] <... close resumed>) = 0 [pid 359] <... openat resumed>) = 3 [pid 358] close(3 [pid 517] +++ exited with 0 +++ [pid 516] exit_group(0 [pid 359] ioctl(3, LOOP_CLR_FD [pid 358] <... close resumed>) = 0 [pid 516] <... exit_group resumed>) = ? [pid 359] <... ioctl resumed>) = 0 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 516] +++ exited with 0 +++ [pid 359] close(3 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=517, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] <... openat resumed>) = 3 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=516, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] <... close resumed>) = 0 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 519 [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 356] ioctl(3, LOOP_CLR_FD [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 357] <... restart_syscall resumed>) = 0 [pid 356] <... ioctl resumed>) = 0 [pid 356] close(3 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 356] <... close resumed>) = 0 [pid 361] <... openat resumed>) = 3 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 361] ioctl(3, LOOP_CLR_FD [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 520 [pid 357] <... openat resumed>) = 3 [pid 361] <... ioctl resumed>) = 0 [pid 357] ioctl(3, LOOP_CLR_FD [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 521 [pid 361] close(3 [pid 357] <... ioctl resumed>) = 0 [pid 361] <... close resumed>) = 0 [pid 357] close(3./strace-static-x86_64: Process 518 attached [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 357] <... close resumed>) = 0 [pid 518] set_robust_list(0x5555574d4660, 24 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 518] <... set_robust_list resumed>) = 0 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 522 [pid 518] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 523 [pid 518] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 519 attached [pid 518] setpgid(0, 0) = 0 [pid 519] set_robust_list(0x5555574d4660, 24 [pid 518] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 518] write(3, "1000", 4) = 4 ./strace-static-x86_64: Process 521 attached [pid 519] <... set_robust_list resumed>) = 0 [pid 518] close(3) = 0 ./strace-static-x86_64: Process 520 attached [pid 521] set_robust_list(0x5555574d4660, 24 [pid 519] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 518] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 521] <... set_robust_list resumed>) = 0 [pid 520] set_robust_list(0x5555574d4660, 24 [pid 519] <... prctl resumed>) = 0 [pid 518] <... openat resumed>) = 3 [pid 521] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 520] <... set_robust_list resumed>) = 0 [pid 519] setpgid(0, 0 [pid 518] ioctl(3, BLKSECDISCARD, [0, 0] [pid 521] <... prctl resumed>) = 0 [pid 520] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 519] <... setpgid resumed>) = 0 [pid 518] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) ./strace-static-x86_64: Process 522 attached [pid 520] <... prctl resumed>) = 0 [pid 518] memfd_create("syzkaller", 0 [pid 522] set_robust_list(0x5555574d4660, 24 [pid 520] setpgid(0, 0 [pid 518] <... memfd_create resumed>) = 4 [pid 522] <... set_robust_list resumed>) = 0 [pid 520] <... setpgid resumed>) = 0 [pid 518] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 523 attached [pid 522] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 521] setpgid(0, 0 [pid 520] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 519] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 518] <... mmap resumed>) = 0x7f1bc18a3000 [pid 523] set_robust_list(0x5555574d4660, 24 [pid 522] <... prctl resumed>) = 0 [pid 521] <... setpgid resumed>) = 0 [pid 520] <... openat resumed>) = 3 [pid 519] <... openat resumed>) = 3 [pid 518] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 523] <... set_robust_list resumed>) = 0 [pid 522] setpgid(0, 0 [pid 521] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 520] write(3, "1000", 4 [pid 519] write(3, "1000", 4 [pid 518] <... write resumed>) = 262144 [pid 523] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 522] <... setpgid resumed>) = 0 [pid 520] <... write resumed>) = 4 [pid 519] <... write resumed>) = 4 [pid 523] <... prctl resumed>) = 0 [pid 522] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 521] <... openat resumed>) = 3 [pid 520] close(3 [pid 519] close(3 [pid 523] setpgid(0, 0 [pid 522] <... openat resumed>) = 3 [pid 521] write(3, "1000", 4 [pid 520] <... close resumed>) = 0 [pid 519] <... close resumed>) = 0 [pid 523] <... setpgid resumed>) = 0 [pid 522] write(3, "1000", 4 [pid 521] <... write resumed>) = 4 [pid 520] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 518] munmap(0x7f1bc18a3000, 138412032 [pid 523] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 522] <... write resumed>) = 4 [pid 521] close(3 [pid 520] <... openat resumed>) = 3 [pid 519] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 518] <... munmap resumed>) = 0 [pid 523] <... openat resumed>) = 3 [pid 522] close(3 [pid 521] <... close resumed>) = 0 [pid 520] ioctl(3, BLKSECDISCARD, [0, 0] [pid 519] <... openat resumed>) = 3 [pid 518] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 523] write(3, "1000", 4 [pid 522] <... close resumed>) = 0 [pid 521] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 520] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 519] ioctl(3, BLKSECDISCARD, [0, 0] [pid 518] <... openat resumed>) = 5 [pid 523] <... write resumed>) = 4 [pid 522] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 521] <... openat resumed>) = 3 [pid 520] memfd_create("syzkaller", 0 [pid 519] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 518] ioctl(5, LOOP_SET_FD, 4 [pid 523] close(3 [pid 522] <... openat resumed>) = 3 [pid 521] ioctl(3, BLKSECDISCARD, [0, 0] [pid 520] <... memfd_create resumed>) = 4 [pid 519] memfd_create("syzkaller", 0 [pid 518] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 523] <... close resumed>) = 0 [pid 522] ioctl(3, BLKSECDISCARD, [0, 0] [pid 521] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 520] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 519] <... memfd_create resumed>) = 4 [pid 518] ioctl(5, LOOP_CLR_FD [pid 523] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 522] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 521] memfd_create("syzkaller", 0 [pid 520] <... mmap resumed>) = 0x7f1bc18a3000 [pid 519] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 518] <... ioctl resumed>) = 0 [pid 523] <... openat resumed>) = 3 [pid 522] memfd_create("syzkaller", 0 [pid 521] <... memfd_create resumed>) = 4 [pid 520] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 519] <... mmap resumed>) = 0x7f1bc18a3000 [pid 523] ioctl(3, BLKSECDISCARD, [0, 0] [pid 522] <... memfd_create resumed>) = 4 [pid 521] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 520] <... write resumed>) = 262144 [pid 522] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 520] munmap(0x7f1bc18a3000, 138412032 [pid 522] <... mmap resumed>) = 0x7f1bc18a3000 [pid 520] <... munmap resumed>) = 0 [pid 523] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 522] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 521] <... mmap resumed>) = 0x7f1bc18a3000 [pid 520] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 519] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 518] ioctl(5, LOOP_SET_FD, 4 [pid 523] memfd_create("syzkaller", 0 [pid 522] <... write resumed>) = 262144 [pid 520] <... openat resumed>) = 5 [pid 518] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 522] munmap(0x7f1bc18a3000, 138412032 [pid 520] ioctl(5, LOOP_SET_FD, 4 [pid 518] close(5 [pid 522] <... munmap resumed>) = 0 [pid 520] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 518] <... close resumed>) = 0 [pid 522] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 520] ioctl(5, LOOP_CLR_FD [pid 518] close(4 [pid 523] <... memfd_create resumed>) = 4 [pid 522] <... openat resumed>) = 5 [pid 521] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 520] <... ioctl resumed>) = 0 [pid 518] <... close resumed>) = 0 [pid 522] ioctl(5, LOOP_SET_FD, 4 [pid 518] exit_group(0 [pid 522] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 518] <... exit_group resumed>) = ? [pid 523] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 522] ioctl(5, LOOP_CLR_FD [pid 519] <... write resumed>) = 262144 [pid 518] +++ exited with 0 +++ [pid 523] <... mmap resumed>) = 0x7f1bc18a3000 [pid 522] <... ioctl resumed>) = 0 [pid 519] munmap(0x7f1bc18a3000, 138412032 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=518, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 520] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 520] close(5) = 0 [pid 520] close(4) = 0 [pid 522] ioctl(5, LOOP_SET_FD, 4 [pid 520] exit_group(0 [pid 522] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 520] <... exit_group resumed>) = ? [pid 523] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 522] close(5 [pid 521] <... write resumed>) = 262144 [pid 520] +++ exited with 0 +++ [pid 519] <... munmap resumed>) = 0 [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 522] <... close resumed>) = 0 [pid 522] close(4) = 0 [pid 523] <... write resumed>) = 262144 [pid 522] exit_group(0 [pid 521] munmap(0x7f1bc18a3000, 138412032 [pid 519] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 360] <... restart_syscall resumed>) = 0 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=520, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 523] munmap(0x7f1bc18a3000, 138412032 [pid 522] <... exit_group resumed>) = ? [pid 519] <... openat resumed>) = 5 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 523] <... munmap resumed>) = 0 [pid 522] +++ exited with 0 +++ [pid 521] <... munmap resumed>) = 0 [pid 519] ioctl(5, LOOP_SET_FD, 4 [pid 359] <... openat resumed>) = 3 [pid 523] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 521] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 519] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 359] ioctl(3, LOOP_CLR_FD [pid 523] <... openat resumed>) = 5 [pid 521] <... openat resumed>) = 5 [pid 519] ioctl(5, LOOP_CLR_FD [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=522, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 523] ioctl(5, LOOP_SET_FD, 4 [pid 521] ioctl(5, LOOP_SET_FD, 4 [pid 519] <... ioctl resumed>) = 0 [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 360] <... openat resumed>) = 3 [pid 359] <... ioctl resumed>) = 0 [pid 523] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 521] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] ioctl(3, LOOP_CLR_FD [pid 359] close(3 [pid 523] ioctl(5, LOOP_CLR_FD [pid 521] ioctl(5, LOOP_CLR_FD [pid 360] <... ioctl resumed>) = 0 [pid 523] <... ioctl resumed>) = 0 [pid 521] <... ioctl resumed>) = 0 [pid 360] close(3 [pid 359] <... close resumed>) = 0 [pid 360] <... close resumed>) = 0 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 361] <... restart_syscall resumed>) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 361] ioctl(3, LOOP_CLR_FD) = 0 [pid 361] close(3) = 0 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 524 [pid 523] ioctl(5, LOOP_SET_FD, 4 [pid 521] ioctl(5, LOOP_SET_FD, 4 [pid 519] ioctl(5, LOOP_SET_FD, 4 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 526 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 525 [pid 523] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 521] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 519] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 523] close(5 [pid 519] close(5 [pid 521] close(5 [pid 523] <... close resumed>) = 0 [pid 521] <... close resumed>) = 0 [pid 519] <... close resumed>) = 0 [pid 523] close(4 [pid 521] close(4 [pid 519] close(4./strace-static-x86_64: Process 524 attached [pid 524] set_robust_list(0x5555574d4660, 24) = 0 [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 [pid 523] <... close resumed>) = 0 [pid 524] <... openat resumed>) = 3 [pid 524] write(3, "1000", 4) = 4 [pid 524] close(3) = 0 [pid 524] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 519] <... close resumed>) = 0 ./strace-static-x86_64: Process 525 attached [pid 525] set_robust_list(0x5555574d4660, 24 [pid 524] ioctl(3, BLKSECDISCARD, [0, 0] [pid 525] <... set_robust_list resumed>) = 0 [pid 524] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 521] <... close resumed>) = 0 [pid 524] memfd_create("syzkaller", 0 [pid 519] exit_group(0 [pid 521] exit_group(0 [pid 523] exit_group(0 [pid 519] <... exit_group resumed>) = ? [pid 523] <... exit_group resumed>) = ? [pid 521] <... exit_group resumed>) = ? [pid 525] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 524] <... memfd_create resumed>) = 4 [pid 525] setpgid(0, 0 [pid 524] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 525] <... setpgid resumed>) = 0 [pid 524] <... mmap resumed>) = 0x7f1bc18a3000 [pid 519] +++ exited with 0 +++ [pid 525] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 523] +++ exited with 0 +++ [pid 521] +++ exited with 0 +++ [pid 525] <... openat resumed>) = 3 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=519, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=523, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=521, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 525] write(3, "1000", 4 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 525] <... write resumed>) = 4 [pid 358] <... openat resumed>) = 3 [pid 525] close(3 [pid 358] ioctl(3, LOOP_CLR_FD [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 525] <... close resumed>) = 0 [pid 358] <... ioctl resumed>) = 0 [pid 357] <... openat resumed>) = 3 [pid 356] <... openat resumed>) = 3 [pid 525] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 358] close(3 [pid 357] ioctl(3, LOOP_CLR_FD [pid 356] ioctl(3, LOOP_CLR_FD [pid 525] <... openat resumed>) = 3 [pid 358] <... close resumed>) = 0 [pid 357] <... ioctl resumed>) = 0 [pid 356] <... ioctl resumed>) = 0 [pid 525] ioctl(3, BLKSECDISCARD, [0, 0] [pid 524] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 357] close(3 [pid 356] close(3 [pid 525] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 357] <... close resumed>) = 0 [pid 356] <... close resumed>) = 0 [pid 525] memfd_create("syzkaller", 0 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 527 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 525] <... memfd_create resumed>) = 4 [pid 525] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 528 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 529 [pid 525] <... mmap resumed>) = 0x7f1bc18a3000 [pid 525] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 524] <... write resumed>) = 262144 [pid 524] munmap(0x7f1bc18a3000, 138412032) = 0 [pid 524] openat(AT_FDCWD, "/dev/loop3", O_RDWR./strace-static-x86_64: Process 529 attached ./strace-static-x86_64: Process 527 attached ) = 5 [pid 529] set_robust_list(0x5555574d4660, 24 [pid 524] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 525] <... write resumed>) = 262144 [pid 524] ioctl(5, LOOP_CLR_FD./strace-static-x86_64: Process 526 attached [pid 525] munmap(0x7f1bc18a3000, 138412032 [pid 524] <... ioctl resumed>) = 0 [pid 525] <... munmap resumed>) = 0 [pid 526] set_robust_list(0x5555574d4660, 24) = 0 [pid 525] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 526] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 525] <... openat resumed>) = 5 [pid 526] <... prctl resumed>) = 0 [pid 525] ioctl(5, LOOP_SET_FD, 4 [pid 526] setpgid(0, 0 [pid 525] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 526] <... setpgid resumed>) = 0 [pid 525] ioctl(5, LOOP_CLR_FD [pid 529] <... set_robust_list resumed>) = 0 [pid 527] set_robust_list(0x5555574d4660, 24 [pid 526] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 525] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 528 attached [pid 526] <... openat resumed>) = 3 [pid 524] ioctl(5, LOOP_SET_FD, 4 [pid 528] set_robust_list(0x5555574d4660, 24 [pid 526] write(3, "1000", 4 [pid 524] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 528] <... set_robust_list resumed>) = 0 [pid 526] <... write resumed>) = 4 [pid 528] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 527] <... set_robust_list resumed>) = 0 [pid 526] close(3 [pid 524] close(5 [pid 528] <... prctl resumed>) = 0 [pid 526] <... close resumed>) = 0 [pid 524] <... close resumed>) = 0 [pid 528] setpgid(0, 0 [pid 529] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 527] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 526] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 524] close(4 [pid 528] <... setpgid resumed>) = 0 [pid 526] <... openat resumed>) = 3 [pid 525] ioctl(5, LOOP_SET_FD, 4 [pid 524] <... close resumed>) = 0 [pid 529] <... prctl resumed>) = 0 [pid 528] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 527] <... prctl resumed>) = 0 [pid 526] ioctl(3, BLKSECDISCARD, [0, 0] [pid 525] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 524] exit_group(0 [pid 529] setpgid(0, 0 [pid 528] <... openat resumed>) = 3 [pid 527] setpgid(0, 0 [pid 526] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 525] close(5 [pid 524] <... exit_group resumed>) = ? [pid 529] <... setpgid resumed>) = 0 [pid 528] write(3, "1000", 4 [pid 527] <... setpgid resumed>) = 0 [pid 526] memfd_create("syzkaller", 0 [pid 525] <... close resumed>) = 0 [pid 524] +++ exited with 0 +++ [pid 528] <... write resumed>) = 4 [pid 526] <... memfd_create resumed>) = 4 [pid 525] close(4 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=524, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 529] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 528] close(3 [pid 527] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 526] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 525] <... close resumed>) = 0 [pid 528] <... close resumed>) = 0 [pid 526] <... mmap resumed>) = 0x7f1bc18a3000 [pid 525] exit_group(0 [pid 529] <... openat resumed>) = 3 [pid 528] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 527] <... openat resumed>) = 3 [pid 526] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 525] <... exit_group resumed>) = ? [pid 529] write(3, "1000", 4 [pid 528] <... openat resumed>) = 3 [pid 527] write(3, "1000", 4 [pid 526] <... write resumed>) = 262144 [pid 525] +++ exited with 0 +++ [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 529] <... write resumed>) = 4 [pid 528] ioctl(3, BLKSECDISCARD, [0, 0] [pid 527] <... write resumed>) = 4 [pid 526] munmap(0x7f1bc18a3000, 138412032 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=525, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] <... openat resumed>) = 3 [pid 529] close(3 [pid 528] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 527] close(3 [pid 526] <... munmap resumed>) = 0 [pid 359] ioctl(3, LOOP_CLR_FD [pid 529] <... close resumed>) = 0 [pid 528] memfd_create("syzkaller", 0 [pid 527] <... close resumed>) = 0 [pid 526] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 359] <... ioctl resumed>) = 0 [pid 529] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 528] <... memfd_create resumed>) = 4 [pid 527] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 526] <... openat resumed>) = 5 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 359] close(3 [pid 529] <... openat resumed>) = 3 [pid 528] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 527] <... openat resumed>) = 3 [pid 526] ioctl(5, LOOP_SET_FD, 4 [pid 360] <... openat resumed>) = 3 [pid 529] ioctl(3, BLKSECDISCARD, [0, 0] [pid 528] <... mmap resumed>) = 0x7f1bc18a3000 [pid 527] ioctl(3, BLKSECDISCARD, [0, 0] [pid 526] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] ioctl(3, LOOP_CLR_FD [pid 359] <... close resumed>) = 0 [pid 529] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 528] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 526] ioctl(5, LOOP_CLR_FD [pid 529] memfd_create("syzkaller", 0 [pid 528] <... write resumed>) = 262144 [pid 527] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 526] <... ioctl resumed>) = 0 [pid 360] <... ioctl resumed>) = 0 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 528] munmap(0x7f1bc18a3000, 138412032) = 0 [pid 528] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 529] <... memfd_create resumed>) = 4 [pid 528] <... openat resumed>) = 5 [pid 527] memfd_create("syzkaller", 0 [pid 360] close(3 [pid 528] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 528] ioctl(5, LOOP_CLR_FD) = 0 [pid 529] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 527] <... memfd_create resumed>) = 4 [pid 360] <... close resumed>) = 0 [pid 526] ioctl(5, LOOP_SET_FD, 4 [pid 528] ioctl(5, LOOP_SET_FD, 4 [pid 526] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 529] <... mmap resumed>) = 0x7f1bc18a3000 [pid 528] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 527] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 526] close(5 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 530 [pid 528] close(5 [pid 526] <... close resumed>) = 0 [pid 528] <... close resumed>) = 0 [pid 526] close(4 [pid 528] close(4 [pid 526] <... close resumed>) = 0 [pid 529] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 528] <... close resumed>) = 0 [pid 526] exit_group(0 [pid 528] exit_group(0 [pid 526] <... exit_group resumed>) = ? [pid 528] <... exit_group resumed>) = ? [pid 527] <... mmap resumed>) = 0x7f1bc18a3000 [pid 526] +++ exited with 0 +++ [pid 528] +++ exited with 0 +++ [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=526, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=528, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 357] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 530 attached [pid 530] set_robust_list(0x5555574d4660, 24 [pid 361] <... restart_syscall resumed>) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 361] ioctl(3, LOOP_CLR_FD) = 0 [pid 361] close(3) = 0 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 527] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 531 [pid 357] <... restart_syscall resumed>) = 0 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 532 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 357] ioctl(3, LOOP_CLR_FD [pid 530] <... set_robust_list resumed>) = 0 [pid 357] <... ioctl resumed>) = 0 [pid 530] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 357] close(3 [pid 530] <... prctl resumed>) = 0 [pid 357] <... close resumed>) = 0 [pid 530] setpgid(0, 0 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 530] <... setpgid resumed>) = 0 [pid 527] <... write resumed>) = 262144 [pid 530] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 533 [pid 530] <... openat resumed>) = 3 [pid 530] write(3, "1000", 4) = 4 [pid 530] close(3) = 0 ./strace-static-x86_64: Process 531 attached [pid 530] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 531] set_robust_list(0x5555574d4660, 24 [pid 530] <... openat resumed>) = 3 [pid 531] <... set_robust_list resumed>) = 0 [pid 530] ioctl(3, BLKSECDISCARD, [0, 0] [pid 531] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 530] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 531] <... prctl resumed>) = 0 [pid 530] memfd_create("syzkaller", 0 [pid 531] setpgid(0, 0 [pid 530] <... memfd_create resumed>) = 4 [pid 531] <... setpgid resumed>) = 0 [pid 530] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 529] <... write resumed>) = 262144 [pid 527] munmap(0x7f1bc18a3000, 138412032 [pid 531] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 530] <... mmap resumed>) = 0x7f1bc18a3000 [pid 531] <... openat resumed>) = 3 [pid 529] munmap(0x7f1bc18a3000, 138412032 [pid 527] <... munmap resumed>) = 0 [pid 531] write(3, "1000", 4 [pid 530] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 529] <... munmap resumed>) = 0 [pid 527] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 531] <... write resumed>) = 4 [pid 527] <... openat resumed>) = 5 [pid 529] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 531] close(3 [pid 527] ioctl(5, LOOP_SET_FD, 4 [pid 531] <... close resumed>) = 0 [pid 531] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 529] <... openat resumed>) = 5 [pid 527] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 533 attached [pid 531] <... openat resumed>) = 3 [pid 529] ioctl(5, LOOP_SET_FD, 4 [pid 527] ioctl(5, LOOP_CLR_FD [pid 533] set_robust_list(0x5555574d4660, 24 [pid 531] ioctl(3, BLKSECDISCARD, [0, 0] [pid 527] <... ioctl resumed>) = 0 [pid 533] <... set_robust_list resumed>) = 0 [pid 531] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 529] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 533] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 531] memfd_create("syzkaller", 0 [pid 529] ioctl(5, LOOP_CLR_FD [pid 533] <... prctl resumed>) = 0 [pid 531] <... memfd_create resumed>) = 4 [pid 529] <... ioctl resumed>) = 0 [pid 533] setpgid(0, 0 [pid 531] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 530] <... write resumed>) = 262144 [pid 533] <... setpgid resumed>) = 0 [pid 531] <... mmap resumed>) = 0x7f1bc18a3000 ./strace-static-x86_64: Process 532 attached [pid 533] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 531] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 530] munmap(0x7f1bc18a3000, 138412032 [pid 533] <... openat resumed>) = 3 [pid 532] set_robust_list(0x5555574d4660, 24 [pid 531] <... write resumed>) = 262144 [pid 530] <... munmap resumed>) = 0 [pid 529] ioctl(5, LOOP_SET_FD, 4 [pid 527] ioctl(5, LOOP_SET_FD, 4 [pid 533] write(3, "1000", 4 [pid 532] <... set_robust_list resumed>) = 0 [pid 531] munmap(0x7f1bc18a3000, 138412032 [pid 530] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 529] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 527] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 533] <... write resumed>) = 4 [pid 532] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 531] <... munmap resumed>) = 0 [pid 530] <... openat resumed>) = 5 [pid 529] close(5 [pid 527] close(5 [pid 533] close(3 [pid 532] <... prctl resumed>) = 0 [pid 531] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 530] ioctl(5, LOOP_SET_FD, 4 [pid 529] <... close resumed>) = 0 [pid 527] <... close resumed>) = 0 [pid 533] <... close resumed>) = 0 [pid 532] setpgid(0, 0 [pid 531] <... openat resumed>) = 5 [pid 530] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 529] close(4 [pid 527] close(4 [pid 533] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 532] <... setpgid resumed>) = 0 [pid 531] ioctl(5, LOOP_SET_FD, 4 [pid 530] ioctl(5, LOOP_CLR_FD [pid 529] <... close resumed>) = 0 [pid 527] <... close resumed>) = 0 [pid 533] <... openat resumed>) = 3 [pid 532] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 531] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 530] <... ioctl resumed>) = 0 [pid 529] exit_group(0 [pid 527] exit_group(0 [pid 533] ioctl(3, BLKSECDISCARD, [0, 0] [pid 532] <... openat resumed>) = 3 [pid 531] ioctl(5, LOOP_CLR_FD [pid 529] <... exit_group resumed>) = ? [pid 527] <... exit_group resumed>) = ? [pid 533] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 532] write(3, "1000", 4 [pid 531] <... ioctl resumed>) = 0 [pid 529] +++ exited with 0 +++ [pid 527] +++ exited with 0 +++ [pid 533] memfd_create("syzkaller", 0 [pid 532] <... write resumed>) = 4 [pid 530] ioctl(5, LOOP_SET_FD, 4 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=527, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=529, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 533] <... memfd_create resumed>) = 4 [pid 532] close(3 [pid 530] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 533] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 532] <... close resumed>) = 0 [pid 530] close(5 [pid 533] <... mmap resumed>) = 0x7f1bc18a3000 [pid 532] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 530] <... close resumed>) = 0 [pid 532] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 532] memfd_create("syzkaller", 0) = 4 [pid 532] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 533] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 532] <... mmap resumed>) = 0x7f1bc18a3000 [pid 530] close(4 [pid 533] <... write resumed>) = 262144 [pid 532] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 531] ioctl(5, LOOP_SET_FD, 4 [pid 533] munmap(0x7f1bc18a3000, 138412032 [pid 532] <... write resumed>) = 262144 [pid 531] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 530] <... close resumed>) = 0 [pid 532] munmap(0x7f1bc18a3000, 138412032 [pid 533] <... munmap resumed>) = 0 [pid 532] <... munmap resumed>) = 0 [pid 531] close(5 [pid 530] exit_group(0 [pid 533] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 532] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 531] <... close resumed>) = 0 [pid 530] <... exit_group resumed>) = ? [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 533] <... openat resumed>) = 5 [pid 532] <... openat resumed>) = 5 [pid 531] close(4 [pid 532] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 532] ioctl(5, LOOP_CLR_FD [pid 530] +++ exited with 0 +++ [pid 358] <... openat resumed>) = 3 [pid 356] <... openat resumed>) = 3 [pid 532] <... ioctl resumed>) = 0 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=530, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 533] ioctl(5, LOOP_SET_FD, 4 [pid 531] <... close resumed>) = 0 [pid 358] ioctl(3, LOOP_CLR_FD [pid 356] ioctl(3, LOOP_CLR_FD [pid 533] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 531] exit_group(0 [pid 358] <... ioctl resumed>) = 0 [pid 356] <... ioctl resumed>) = 0 [pid 533] ioctl(5, LOOP_CLR_FD [pid 531] <... exit_group resumed>) = ? [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 358] close(3 [pid 356] close(3 [pid 533] <... ioctl resumed>) = 0 [pid 359] <... openat resumed>) = 3 [pid 532] ioctl(5, LOOP_SET_FD, 4 [pid 531] +++ exited with 0 +++ [pid 359] ioctl(3, LOOP_CLR_FD [pid 358] <... close resumed>) = 0 [pid 356] <... close resumed>) = 0 [pid 532] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] <... ioctl resumed>) = 0 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 532] close(5 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=531, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] close(3 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 533] ioctl(5, LOOP_SET_FD, 4 [pid 532] <... close resumed>) = 0 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 359] <... close resumed>) = 0 [pid 533] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 532] close(4 [pid 360] <... openat resumed>) = 3 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 534 [pid 533] close(5 [pid 532] <... close resumed>) = 0 [pid 360] ioctl(3, LOOP_CLR_FD [pid 533] <... close resumed>) = 0 [pid 532] exit_group(0 [pid 360] <... ioctl resumed>) = 0 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 536 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 535 [pid 533] close(4 [pid 532] <... exit_group resumed>) = ? [pid 360] close(3 [pid 533] <... close resumed>) = 0 [pid 532] +++ exited with 0 +++ [pid 360] <... close resumed>) = 0 [pid 533] exit_group(0 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=532, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 533] <... exit_group resumed>) = ? [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 537 ./strace-static-x86_64: Process 534 attached [pid 534] set_robust_list(0x5555574d4660, 24) = 0 [pid 534] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 533] +++ exited with 0 +++ [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=533, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 361] <... openat resumed>) = 3 [pid 361] ioctl(3, LOOP_CLR_FD [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 361] <... ioctl resumed>) = 0 [pid 357] <... openat resumed>) = 3 [pid 361] close(3 [pid 357] ioctl(3, LOOP_CLR_FD [pid 361] <... close resumed>) = 0 [pid 534] setpgid(0, 0 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 357] <... ioctl resumed>) = 0 [pid 534] <... setpgid resumed>) = 0 [pid 534] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 357] close(3 [pid 534] <... openat resumed>) = 3 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 538 [pid 357] <... close resumed>) = 0 [pid 534] write(3, "1000", 4 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 534] <... write resumed>) = 4 [pid 534] close(3) = 0 [pid 534] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 534] ioctl(3, BLKSECDISCARD, [0, 0] [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 539 [pid 534] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) ./strace-static-x86_64: Process 537 attached [pid 534] memfd_create("syzkaller", 0 [pid 537] set_robust_list(0x5555574d4660, 24 [pid 534] <... memfd_create resumed>) = 4 [pid 537] <... set_robust_list resumed>) = 0 [pid 534] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 537] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 534] <... mmap resumed>) = 0x7f1bc18a3000 ./strace-static-x86_64: Process 538 attached ./strace-static-x86_64: Process 535 attached [pid 537] <... prctl resumed>) = 0 [pid 534] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 538] set_robust_list(0x5555574d4660, 24 [pid 537] setpgid(0, 0 [pid 535] set_robust_list(0x5555574d4660, 24 [pid 538] <... set_robust_list resumed>) = 0 [pid 537] <... setpgid resumed>) = 0 [pid 538] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 537] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 535] <... set_robust_list resumed>) = 0 [pid 538] <... prctl resumed>) = 0 [pid 537] <... openat resumed>) = 3 [pid 535] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 536 attached [pid 538] setpgid(0, 0 [pid 537] write(3, "1000", 4 [pid 535] <... prctl resumed>) = 0 [pid 538] <... setpgid resumed>) = 0 [pid 537] <... write resumed>) = 4 [pid 535] setpgid(0, 0 [pid 538] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 537] close(3 [pid 536] set_robust_list(0x5555574d4660, 24 [pid 535] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 539 attached [pid 538] <... openat resumed>) = 3 [pid 537] <... close resumed>) = 0 [pid 536] <... set_robust_list resumed>) = 0 [pid 535] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 538] write(3, "1000", 4 [pid 537] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 536] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 535] <... openat resumed>) = 3 [pid 539] set_robust_list(0x5555574d4660, 24 [pid 538] <... write resumed>) = 4 [pid 537] <... openat resumed>) = 3 [pid 536] <... prctl resumed>) = 0 [pid 535] write(3, "1000", 4 [pid 534] <... write resumed>) = 262144 [pid 539] <... set_robust_list resumed>) = 0 [pid 538] close(3 [pid 537] ioctl(3, BLKSECDISCARD, [0, 0] [pid 536] setpgid(0, 0 [pid 535] <... write resumed>) = 4 [pid 534] munmap(0x7f1bc18a3000, 138412032 [pid 539] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 538] <... close resumed>) = 0 [pid 537] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 536] <... setpgid resumed>) = 0 [pid 535] close(3 [pid 534] <... munmap resumed>) = 0 [pid 539] <... prctl resumed>) = 0 [pid 538] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 537] memfd_create("syzkaller", 0 [pid 536] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 535] <... close resumed>) = 0 [pid 534] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 539] setpgid(0, 0 [pid 538] <... openat resumed>) = 3 [pid 537] <... memfd_create resumed>) = 4 [pid 536] <... openat resumed>) = 3 [pid 535] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 534] <... openat resumed>) = 5 [pid 539] <... setpgid resumed>) = 0 [pid 538] ioctl(3, BLKSECDISCARD, [0, 0] [pid 537] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 536] write(3, "1000", 4 [pid 535] <... openat resumed>) = 3 [pid 534] ioctl(5, LOOP_SET_FD, 4 [pid 539] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 538] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 537] <... mmap resumed>) = 0x7f1bc18a3000 [pid 536] <... write resumed>) = 4 [pid 535] ioctl(3, BLKSECDISCARD, [0, 0] [pid 534] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 539] <... openat resumed>) = 3 [pid 538] memfd_create("syzkaller", 0 [pid 537] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 536] close(3 [pid 535] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 534] ioctl(5, LOOP_CLR_FD [pid 539] write(3, "1000", 4 [pid 538] <... memfd_create resumed>) = 4 [pid 537] <... write resumed>) = 262144 [pid 536] <... close resumed>) = 0 [pid 535] memfd_create("syzkaller", 0 [pid 534] <... ioctl resumed>) = 0 [pid 539] <... write resumed>) = 4 [pid 538] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 537] munmap(0x7f1bc18a3000, 138412032 [pid 536] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 535] <... memfd_create resumed>) = 4 [pid 539] close(3 [pid 538] <... mmap resumed>) = 0x7f1bc18a3000 [pid 537] <... munmap resumed>) = 0 [pid 536] <... openat resumed>) = 3 [pid 535] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 539] <... close resumed>) = 0 [pid 538] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 537] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 536] ioctl(3, BLKSECDISCARD, [0, 0] [pid 535] <... mmap resumed>) = 0x7f1bc18a3000 [pid 539] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 538] <... write resumed>) = 262144 [pid 537] <... openat resumed>) = 5 [pid 536] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 534] ioctl(5, LOOP_SET_FD, 4 [pid 538] munmap(0x7f1bc18a3000, 138412032 [pid 537] ioctl(5, LOOP_SET_FD, 4 [pid 534] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 538] <... munmap resumed>) = 0 [pid 537] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 534] close(5 [pid 538] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 537] ioctl(5, LOOP_CLR_FD [pid 535] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 534] <... close resumed>) = 0 [pid 539] <... openat resumed>) = 3 [pid 538] <... openat resumed>) = 5 [pid 537] <... ioctl resumed>) = 0 [pid 536] memfd_create("syzkaller", 0 [pid 534] close(4 [pid 538] ioctl(5, LOOP_SET_FD, 4 [pid 535] <... write resumed>) = 262144 [pid 534] <... close resumed>) = 0 [pid 539] ioctl(3, BLKSECDISCARD, [0, 0] [pid 538] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 536] <... memfd_create resumed>) = 4 [pid 535] munmap(0x7f1bc18a3000, 138412032 [pid 534] exit_group(0 [pid 539] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 538] ioctl(5, LOOP_CLR_FD [pid 536] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 534] <... exit_group resumed>) = ? [pid 539] memfd_create("syzkaller", 0 [pid 538] <... ioctl resumed>) = 0 [pid 536] <... mmap resumed>) = 0x7f1bc18a3000 [pid 535] <... munmap resumed>) = 0 [pid 534] +++ exited with 0 +++ [pid 539] <... memfd_create resumed>) = 4 [pid 537] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 537] close(5) = 0 [pid 537] close(4 [pid 539] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 537] <... close resumed>) = 0 [pid 536] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 535] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=534, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 539] <... mmap resumed>) = 0x7f1bc18a3000 [pid 538] ioctl(5, LOOP_SET_FD, 4 [pid 537] exit_group(0 [pid 538] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 537] <... exit_group resumed>) = ? [pid 538] close(5 [pid 537] +++ exited with 0 +++ [pid 536] <... write resumed>) = 262144 [pid 538] <... close resumed>) = 0 [pid 538] close(4 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=537, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 539] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 538] <... close resumed>) = 0 [pid 536] munmap(0x7f1bc18a3000, 138412032 [pid 535] <... openat resumed>) = 5 [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 538] exit_group(0 [pid 360] <... restart_syscall resumed>) = 0 [pid 538] <... exit_group resumed>) = ? [pid 539] <... write resumed>) = 262144 [pid 538] +++ exited with 0 +++ [pid 535] ioctl(5, LOOP_SET_FD, 4 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 539] munmap(0x7f1bc18a3000, 138412032 [pid 536] <... munmap resumed>) = 0 [pid 535] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=538, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 539] <... munmap resumed>) = 0 [pid 536] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 535] ioctl(5, LOOP_CLR_FD [pid 360] <... openat resumed>) = 3 [pid 358] <... openat resumed>) = 3 [pid 539] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 536] <... openat resumed>) = 5 [pid 535] <... ioctl resumed>) = 0 [pid 360] ioctl(3, LOOP_CLR_FD [pid 358] ioctl(3, LOOP_CLR_FD [pid 539] <... openat resumed>) = 5 [pid 536] ioctl(5, LOOP_SET_FD, 4 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 360] <... ioctl resumed>) = 0 [pid 358] <... ioctl resumed>) = 0 [pid 539] ioctl(5, LOOP_SET_FD, 4 [pid 536] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] <... openat resumed>) = 3 [pid 360] close(3 [pid 358] close(3 [pid 539] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 536] ioctl(5, LOOP_CLR_FD [pid 361] ioctl(3, LOOP_CLR_FD [pid 360] <... close resumed>) = 0 [pid 358] <... close resumed>) = 0 [pid 539] ioctl(5, LOOP_CLR_FD [pid 536] <... ioctl resumed>) = 0 [pid 361] <... ioctl resumed>) = 0 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 539] <... ioctl resumed>) = 0 [pid 535] ioctl(5, LOOP_SET_FD, 4 [pid 361] close(3 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 540 ./strace-static-x86_64: Process 540 attached [pid 535] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] <... close resumed>) = 0 [pid 540] set_robust_list(0x5555574d4660, 24 [pid 536] ioctl(5, LOOP_SET_FD, 4 [pid 535] close(5 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 541 [pid 540] <... set_robust_list resumed>) = 0 [pid 536] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 535] <... close resumed>) = 0 [pid 536] close(5 [pid 535] close(4 [pid 540] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 536] <... close resumed>) = 0 ./strace-static-x86_64: Process 541 attached [pid 541] set_robust_list(0x5555574d4660, 24) = 0 [pid 535] <... close resumed>) = 0 [pid 539] ioctl(5, LOOP_SET_FD, 4 [pid 540] <... prctl resumed>) = 0 [pid 536] close(4 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 542 [pid 540] setpgid(0, 0 [pid 539] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 535] exit_group(0 [pid 541] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 541] setpgid(0, 0 [pid 536] <... close resumed>) = 0 [pid 539] close(5 [pid 535] <... exit_group resumed>) = ? [pid 536] exit_group(0 [pid 539] <... close resumed>) = 0 [pid 539] close(4 [pid 541] <... setpgid resumed>) = 0 [pid 541] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 535] +++ exited with 0 +++ [pid 541] <... openat resumed>) = 3 [pid 541] write(3, "1000", 4 [pid 539] <... close resumed>) = 0 [pid 540] <... setpgid resumed>) = 0 [pid 536] <... exit_group resumed>) = ? [pid 539] exit_group(0 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=535, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 541] <... write resumed>) = 4 [pid 541] close(3 [pid 536] +++ exited with 0 +++ [pid 540] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 539] <... exit_group resumed>) = ? [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=536, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 540] <... openat resumed>) = 3 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 540] write(3, "1000", 4 [pid 539] +++ exited with 0 +++ [pid 359] <... openat resumed>) = 3 [pid 356] <... restart_syscall resumed>) = 0 [pid 540] <... write resumed>) = 4 [pid 359] ioctl(3, LOOP_CLR_FD [pid 540] close(3 [pid 359] <... ioctl resumed>) = 0 [pid 540] <... close resumed>) = 0 [pid 359] close(3 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=539, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 540] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 359] <... close resumed>) = 0 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 541] <... close resumed>) = 0 [pid 540] <... openat resumed>) = 3 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 541] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 540] ioctl(3, BLKSECDISCARD, [0, 0] [pid 357] <... openat resumed>) = 3 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 541] <... openat resumed>) = 3 [pid 540] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 543 [pid 357] ioctl(3, LOOP_CLR_FD [pid 541] ioctl(3, BLKSECDISCARD, [0, 0] [pid 540] memfd_create("syzkaller", 0 [pid 357] <... ioctl resumed>) = 0 [pid 356] <... openat resumed>) = 3 [pid 541] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 540] <... memfd_create resumed>) = 4 [pid 357] close(3 [pid 356] ioctl(3, LOOP_CLR_FD [pid 541] memfd_create("syzkaller", 0 [pid 540] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 357] <... close resumed>) = 0 [pid 356] <... ioctl resumed>) = 0 [pid 541] <... memfd_create resumed>) = 4 [pid 540] <... mmap resumed>) = 0x7f1bc18a3000 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] close(3 [pid 541] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 541] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 540] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 356] <... close resumed>) = 0 ./strace-static-x86_64: Process 542 attached [pid 542] set_robust_list(0x5555574d4660, 24) = 0 [pid 542] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 540] <... write resumed>) = 262144 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 544 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 543 attached [pid 540] munmap(0x7f1bc18a3000, 138412032 [pid 542] <... prctl resumed>) = 0 [pid 542] setpgid(0, 0 [pid 543] set_robust_list(0x5555574d4660, 24 [pid 542] <... setpgid resumed>) = 0 [pid 540] <... munmap resumed>) = 0 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 545 [pid 543] <... set_robust_list resumed>) = 0 [pid 542] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 540] openat(AT_FDCWD, "/dev/loop4", O_RDWR./strace-static-x86_64: Process 544 attached [pid 543] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 542] <... openat resumed>) = 3 [pid 540] <... openat resumed>) = 5 [pid 544] set_robust_list(0x5555574d4660, 24 [pid 543] <... prctl resumed>) = 0 [pid 542] write(3, "1000", 4 [pid 540] ioctl(5, LOOP_SET_FD, 4 [pid 544] <... set_robust_list resumed>) = 0 [pid 543] setpgid(0, 0 [pid 542] <... write resumed>) = 4 [pid 540] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 544] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 543] <... setpgid resumed>) = 0 [pid 542] close(3 [pid 541] <... write resumed>) = 262144 [pid 540] ioctl(5, LOOP_CLR_FD [pid 544] <... prctl resumed>) = 0 [pid 543] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 542] <... close resumed>) = 0 [pid 541] munmap(0x7f1bc18a3000, 138412032 [pid 540] <... ioctl resumed>) = 0 [pid 544] setpgid(0, 0 [pid 543] <... openat resumed>) = 3 [pid 542] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 541] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 545 attached [pid 544] <... setpgid resumed>) = 0 [pid 543] write(3, "1000", 4 [pid 542] <... openat resumed>) = 3 [pid 541] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 545] set_robust_list(0x5555574d4660, 24 [pid 544] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 543] <... write resumed>) = 4 [pid 542] ioctl(3, BLKSECDISCARD, [0, 0] [pid 541] <... openat resumed>) = 5 [pid 545] <... set_robust_list resumed>) = 0 [pid 544] <... openat resumed>) = 3 [pid 543] close(3 [pid 542] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 541] ioctl(5, LOOP_SET_FD, 4 [pid 545] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 544] write(3, "1000", 4 [pid 543] <... close resumed>) = 0 [pid 542] memfd_create("syzkaller", 0 [pid 541] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 540] ioctl(5, LOOP_SET_FD, 4 [pid 545] <... prctl resumed>) = 0 [pid 544] <... write resumed>) = 4 [pid 543] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 542] <... memfd_create resumed>) = 4 [pid 541] ioctl(5, LOOP_CLR_FD [pid 540] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 545] setpgid(0, 0 [pid 544] close(3 [pid 543] <... openat resumed>) = 3 [pid 542] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 541] <... ioctl resumed>) = 0 [pid 540] close(5 [pid 545] <... setpgid resumed>) = 0 [pid 544] <... close resumed>) = 0 [pid 543] ioctl(3, BLKSECDISCARD, [0, 0] [pid 542] <... mmap resumed>) = 0x7f1bc18a3000 [pid 540] <... close resumed>) = 0 [pid 545] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 544] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 543] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 542] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 540] close(4 [pid 545] <... openat resumed>) = 3 [pid 544] <... openat resumed>) = 3 [pid 543] memfd_create("syzkaller", 0 [pid 542] <... write resumed>) = 262144 [pid 540] <... close resumed>) = 0 [pid 545] write(3, "1000", 4 [pid 544] ioctl(3, BLKSECDISCARD, [0, 0] [pid 543] <... memfd_create resumed>) = 4 [pid 542] munmap(0x7f1bc18a3000, 138412032 [pid 541] ioctl(5, LOOP_SET_FD, 4 [pid 540] exit_group(0 [pid 545] <... write resumed>) = 4 [pid 544] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 543] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 542] <... munmap resumed>) = 0 [pid 541] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 540] <... exit_group resumed>) = ? [pid 545] close(3 [pid 544] memfd_create("syzkaller", 0 [pid 543] <... mmap resumed>) = 0x7f1bc18a3000 [pid 542] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 541] close(5 [pid 545] <... close resumed>) = 0 [pid 542] <... openat resumed>) = 5 [pid 541] <... close resumed>) = 0 [pid 540] +++ exited with 0 +++ [pid 545] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 544] <... memfd_create resumed>) = 4 [pid 542] ioctl(5, LOOP_SET_FD, 4 [pid 541] close(4 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=540, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 545] <... openat resumed>) = 3 [pid 544] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 543] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 542] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 541] <... close resumed>) = 0 [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 545] ioctl(3, BLKSECDISCARD, [0, 0] [pid 544] <... mmap resumed>) = 0x7f1bc18a3000 [pid 542] ioctl(5, LOOP_CLR_FD [pid 541] exit_group(0 [pid 360] <... restart_syscall resumed>) = 0 [pid 545] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 543] <... write resumed>) = 262144 [pid 542] <... ioctl resumed>) = 0 [pid 541] <... exit_group resumed>) = ? [pid 545] memfd_create("syzkaller", 0 [pid 544] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 543] munmap(0x7f1bc18a3000, 138412032 [pid 541] +++ exited with 0 +++ [pid 545] <... memfd_create resumed>) = 4 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 545] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 360] <... openat resumed>) = 3 [pid 545] <... mmap resumed>) = 0x7f1bc18a3000 [pid 360] ioctl(3, LOOP_CLR_FD [pid 545] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 544] <... write resumed>) = 262144 [pid 543] <... munmap resumed>) = 0 [pid 360] <... ioctl resumed>) = 0 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=541, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 545] <... write resumed>) = 262144 [pid 542] ioctl(5, LOOP_SET_FD, 4 [pid 360] close(3 [pid 545] munmap(0x7f1bc18a3000, 138412032 [pid 542] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] <... close resumed>) = 0 [pid 545] <... munmap resumed>) = 0 [pid 542] close(5 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 545] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 542] <... close resumed>) = 0 [pid 545] <... openat resumed>) = 5 [pid 542] close(4 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 546 [pid 545] ioctl(5, LOOP_SET_FD, 4 [pid 542] <... close resumed>) = 0 [pid 545] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 542] exit_group(0 [pid 545] ioctl(5, LOOP_CLR_FD [pid 542] <... exit_group resumed>) = ? [pid 545] <... ioctl resumed>) = 0 [pid 542] +++ exited with 0 +++ ./strace-static-x86_64: Process 546 attached [pid 546] set_robust_list(0x5555574d4660, 24) = 0 [pid 546] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 546] setpgid(0, 0) = 0 [pid 546] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 546] write(3, "1000", 4) = 4 [pid 546] close(3 [pid 545] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 545] close(5) = 0 [pid 545] close(4) = 0 [pid 545] exit_group(0) = ? [pid 545] +++ exited with 0 +++ [pid 546] <... close resumed>) = 0 [pid 546] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 546] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 546] memfd_create("syzkaller", 0) = 4 [pid 546] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 544] munmap(0x7f1bc18a3000, 138412032 [pid 543] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=545, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 543] <... openat resumed>) = 5 [pid 544] <... munmap resumed>) = 0 [pid 358] <... restart_syscall resumed>) = 0 [pid 543] ioctl(5, LOOP_SET_FD, 4 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=542, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 544] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 543] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 544] <... openat resumed>) = 5 [pid 543] ioctl(5, LOOP_CLR_FD [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 544] ioctl(5, LOOP_SET_FD, 4 [pid 543] <... ioctl resumed>) = 0 [pid 361] <... openat resumed>) = 3 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 544] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] ioctl(3, LOOP_CLR_FD [pid 356] <... openat resumed>) = 3 [pid 544] ioctl(5, LOOP_CLR_FD [pid 361] <... ioctl resumed>) = 0 [pid 358] <... openat resumed>) = 3 [pid 356] ioctl(3, LOOP_CLR_FD [pid 544] <... ioctl resumed>) = 0 [pid 361] close(3 [pid 358] ioctl(3, LOOP_CLR_FD [pid 356] <... ioctl resumed>) = 0 [pid 361] <... close resumed>) = 0 [pid 358] <... ioctl resumed>) = 0 [pid 356] close(3 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] close(3 [pid 356] <... close resumed>) = 0 [pid 358] <... close resumed>) = 0 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 547 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 543] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 543] close(5 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 548 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 549 [pid 544] ioctl(5, LOOP_SET_FD, 4 [pid 543] <... close resumed>) = 0 [pid 544] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 543] close(4 [pid 544] close(5 [pid 546] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 543] <... close resumed>) = 0 [pid 544] <... close resumed>) = 0 [pid 543] exit_group(0 [pid 544] close(4 [pid 543] <... exit_group resumed>) = ? [pid 544] <... close resumed>) = 0 [pid 546] <... write resumed>) = 262144 [pid 546] munmap(0x7f1bc18a3000, 138412032) = 0 ./strace-static-x86_64: Process 548 attached [pid 548] set_robust_list(0x5555574d4660, 24 [pid 543] +++ exited with 0 +++ [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=543, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 544] exit_group(0 [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 544] <... exit_group resumed>) = ? [pid 548] <... set_robust_list resumed>) = 0 [pid 548] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 359] <... restart_syscall resumed>) = 0 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 544] +++ exited with 0 +++ [pid 359] ioctl(3, LOOP_CLR_FD) = 0 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=544, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] close(3) = 0 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555574d4650) = 550 ./strace-static-x86_64: Process 547 attached [pid 547] set_robust_list(0x5555574d4660, 24./strace-static-x86_64: Process 549 attached [pid 548] <... prctl resumed>) = 0 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 548] setpgid(0, 0 [pid 357] <... openat resumed>) = 3 [pid 549] set_robust_list(0x5555574d4660, 24 [pid 357] ioctl(3, LOOP_CLR_FD) = 0 [pid 357] close(3 [pid 547] <... set_robust_list resumed>) = 0 [pid 357] <... close resumed>) = 0 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 547] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 548] <... setpgid resumed>) = 0 [pid 548] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 546] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 551 [pid 549] <... set_robust_list resumed>) = 0 [pid 546] <... openat resumed>) = 5 [pid 549] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 546] ioctl(5, LOOP_SET_FD, 4 [pid 547] <... prctl resumed>) = 0 [pid 546] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 547] setpgid(0, 0 [pid 546] ioctl(5, LOOP_CLR_FD) = 0 [pid 547] <... setpgid resumed>) = 0 [pid 549] <... prctl resumed>) = 0 [pid 547] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 549] setpgid(0, 0 [pid 548] <... openat resumed>) = 3 [pid 549] <... setpgid resumed>) = 0 [pid 548] write(3, "1000", 4 [pid 547] <... openat resumed>) = 3 [pid 549] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 548] <... write resumed>) = 4 [pid 547] write(3, "1000", 4 [pid 549] <... openat resumed>) = 3 [pid 548] close(3 [pid 547] <... write resumed>) = 4 ./strace-static-x86_64: Process 550 attached [pid 549] write(3, "1000", 4 [pid 548] <... close resumed>) = 0 [pid 547] close(3 [pid 546] ioctl(5, LOOP_SET_FD, 4 [pid 550] set_robust_list(0x5555574d4660, 24 [pid 549] <... write resumed>) = 4 [pid 548] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 547] <... close resumed>) = 0 [pid 546] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 550] <... set_robust_list resumed>) = 0 [pid 550] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 549] close(3 [pid 548] <... openat resumed>) = 3 [pid 547] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 546] close(5 [pid 550] <... prctl resumed>) = 0 [pid 549] <... close resumed>) = 0 [pid 548] ioctl(3, BLKSECDISCARD, [0, 0] [pid 547] <... openat resumed>) = 3 [pid 546] <... close resumed>) = 0 [pid 550] setpgid(0, 0 [pid 549] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 548] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 547] ioctl(3, BLKSECDISCARD, [0, 0] [pid 546] close(4./strace-static-x86_64: Process 551 attached [pid 550] <... setpgid resumed>) = 0 [pid 549] <... openat resumed>) = 3 [pid 548] memfd_create("syzkaller", 0 [pid 547] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 546] <... close resumed>) = 0 [pid 550] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 549] ioctl(3, BLKSECDISCARD, [0, 0] [pid 548] <... memfd_create resumed>) = 4 [pid 547] memfd_create("syzkaller", 0 [pid 546] exit_group(0 [pid 551] set_robust_list(0x5555574d4660, 24 [pid 550] <... openat resumed>) = 3 [pid 549] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 548] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 547] <... memfd_create resumed>) = 4 [pid 546] <... exit_group resumed>) = ? [pid 551] <... set_robust_list resumed>) = 0 [pid 550] write(3, "1000", 4 [pid 549] memfd_create("syzkaller", 0 [pid 548] <... mmap resumed>) = 0x7f1bc18a3000 [pid 547] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 546] +++ exited with 0 +++ [pid 551] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 550] <... write resumed>) = 4 [pid 549] <... memfd_create resumed>) = 4 [pid 548] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 547] <... mmap resumed>) = 0x7f1bc18a3000 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=546, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 551] <... prctl resumed>) = 0 [pid 550] close(3 [pid 549] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 548] <... write resumed>) = 262144 [pid 547] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 551] setpgid(0, 0 [pid 550] <... close resumed>) = 0 [pid 549] <... mmap resumed>) = 0x7f1bc18a3000 [pid 547] <... write resumed>) = 262144 [pid 551] <... setpgid resumed>) = 0 [pid 550] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 549] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 548] munmap(0x7f1bc18a3000, 138412032 [pid 547] munmap(0x7f1bc18a3000, 138412032 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 551] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 550] <... openat resumed>) = 3 [pid 549] <... write resumed>) = 262144 [pid 548] <... munmap resumed>) = 0 [pid 547] <... munmap resumed>) = 0 [pid 360] <... openat resumed>) = 3 [pid 549] munmap(0x7f1bc18a3000, 138412032 [pid 548] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 547] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 360] ioctl(3, LOOP_CLR_FD [pid 551] <... openat resumed>) = 3 [pid 550] ioctl(3, BLKSECDISCARD, [0, 0] [pid 549] <... munmap resumed>) = 0 [pid 548] <... openat resumed>) = 5 [pid 547] <... openat resumed>) = 5 [pid 360] <... ioctl resumed>) = 0 [pid 549] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 548] ioctl(5, LOOP_SET_FD, 4 [pid 547] ioctl(5, LOOP_SET_FD, 4 [pid 360] close(3 [pid 551] write(3, "1000", 4 [pid 550] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 549] <... openat resumed>) = 5 [pid 548] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 547] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] <... close resumed>) = 0 [pid 549] ioctl(5, LOOP_SET_FD, 4 [pid 548] ioctl(5, LOOP_CLR_FD [pid 547] ioctl(5, LOOP_CLR_FD [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 551] <... write resumed>) = 4 [pid 550] memfd_create("syzkaller", 0 [pid 549] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 548] <... ioctl resumed>) = 0 [pid 547] <... ioctl resumed>) = 0 [pid 551] close(3 [pid 549] ioctl(5, LOOP_CLR_FD [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 552 [pid 551] <... close resumed>) = 0 [pid 550] <... memfd_create resumed>) = 4 [pid 549] <... ioctl resumed>) = 0 [pid 551] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 550] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 552 attached [pid 552] set_robust_list(0x5555574d4660, 24) = 0 [pid 551] <... openat resumed>) = 3 [pid 550] <... mmap resumed>) = 0x7f1bc18a3000 [pid 548] ioctl(5, LOOP_SET_FD, 4 [pid 547] ioctl(5, LOOP_SET_FD, 4 [pid 548] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 547] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 548] close(5 [pid 547] close(5 [pid 549] ioctl(5, LOOP_SET_FD, 4 [pid 548] <... close resumed>) = 0 [pid 547] <... close resumed>) = 0 [pid 549] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 548] close(4 [pid 547] close(4 [pid 551] ioctl(3, BLKSECDISCARD, [0, 0] [pid 550] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 549] close(5 [pid 548] <... close resumed>) = 0 [pid 547] <... close resumed>) = 0 [pid 551] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 549] <... close resumed>) = 0 [pid 548] exit_group(0 [pid 547] exit_group(0 [pid 549] close(4 [pid 548] <... exit_group resumed>) = ? [pid 547] <... exit_group resumed>) = ? [pid 551] memfd_create("syzkaller", 0 [pid 550] <... write resumed>) = 262144 [pid 549] <... close resumed>) = 0 [pid 548] +++ exited with 0 +++ [pid 547] +++ exited with 0 +++ [pid 549] exit_group(0) = ? [pid 551] <... memfd_create resumed>) = 4 [pid 550] munmap(0x7f1bc18a3000, 138412032 [pid 549] +++ exited with 0 +++ [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=547, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 552] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 552] setpgid(0, 0) = 0 [pid 552] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 551] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 550] <... munmap resumed>) = 0 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=548, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=549, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 551] <... mmap resumed>) = 0x7f1bc18a3000 [pid 552] <... openat resumed>) = 3 [pid 550] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 552] write(3, "1000", 4) = 4 [pid 552] close(3) = 0 [pid 552] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 552] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 552] memfd_create("syzkaller", 0) = 4 [pid 552] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 552] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 551] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 550] <... openat resumed>) = 5 [pid 358] <... openat resumed>) = 3 [pid 550] ioctl(5, LOOP_SET_FD, 4 [pid 358] ioctl(3, LOOP_CLR_FD [pid 551] <... write resumed>) = 262144 [pid 358] <... ioctl resumed>) = 0 [pid 550] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 552] <... write resumed>) = 262144 [pid 551] munmap(0x7f1bc18a3000, 138412032 [pid 550] ioctl(5, LOOP_CLR_FD [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 358] close(3 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 552] munmap(0x7f1bc18a3000, 138412032 [pid 550] <... ioctl resumed>) = 0 [pid 361] <... openat resumed>) = 3 [pid 358] <... close resumed>) = 0 [pid 356] <... openat resumed>) = 3 [pid 551] <... munmap resumed>) = 0 [pid 361] ioctl(3, LOOP_CLR_FD [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] ioctl(3, LOOP_CLR_FD [pid 552] <... munmap resumed>) = 0 [pid 552] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 5 [pid 552] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 552] ioctl(5, LOOP_CLR_FD [pid 361] <... ioctl resumed>) = 0 [pid 356] <... ioctl resumed>) = 0 [pid 552] <... ioctl resumed>) = 0 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 553 [pid 361] close(3 [pid 356] close(3 [pid 361] <... close resumed>) = 0 [pid 356] <... close resumed>) = 0 [pid 551] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 553 attached [pid 553] set_robust_list(0x5555574d4660, 24 [pid 550] ioctl(5, LOOP_SET_FD, 4 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 553] <... set_robust_list resumed>) = 0 [pid 552] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 552] close(5) = 0 [pid 552] close(4 [pid 550] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 552] <... close resumed>) = 0 [pid 551] <... openat resumed>) = 5 [pid 550] close(5) = 0 [pid 551] ioctl(5, LOOP_SET_FD, 4 [pid 550] close(4 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 555 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 554 [pid 552] exit_group(0) = ? [pid 552] +++ exited with 0 +++ [pid 551] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 550] <... close resumed>) = 0 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=552, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 551] ioctl(5, LOOP_CLR_FD [pid 550] exit_group(0 [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 551] <... ioctl resumed>) = 0 [pid 550] <... exit_group resumed>) = ? [pid 360] <... restart_syscall resumed>) = 0 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 360] ioctl(3, LOOP_CLR_FD) = 0 [pid 360] close(3) = 0 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 550] +++ exited with 0 +++ [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 556 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=550, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 551] ioctl(5, LOOP_SET_FD, 4 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 551] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] ioctl(3, LOOP_CLR_FD) = 0 [pid 551] close(5 [pid 359] close(3) = 0 [pid 553] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 551] <... close resumed>) = 0 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 553] <... prctl resumed>) = 0 [pid 551] close(4 [pid 553] setpgid(0, 0 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 557 [pid 553] <... setpgid resumed>) = 0 [pid 553] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 553] write(3, "1000", 4) = 4 [pid 553] close(3) = 0 [pid 553] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 551] <... close resumed>) = 0 [pid 553] <... openat resumed>) = 3 [pid 551] exit_group(0 [pid 553] ioctl(3, BLKSECDISCARD, [0, 0] [pid 551] <... exit_group resumed>) = ? [pid 553] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 553] memfd_create("syzkaller", 0) = 4 [pid 553] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 551] +++ exited with 0 +++ [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=551, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 555 attached [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 554 attached [pid 554] set_robust_list(0x5555574d4660, 24 [pid 357] <... openat resumed>) = 3 [pid 554] <... set_robust_list resumed>) = 0 [pid 357] ioctl(3, LOOP_CLR_FD [pid 555] set_robust_list(0x5555574d4660, 24 [pid 554] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 357] <... ioctl resumed>) = 0 [pid 554] <... prctl resumed>) = 0 [pid 357] close(3 [pid 554] setpgid(0, 0 [pid 357] <... close resumed>) = 0 [pid 554] <... setpgid resumed>) = 0 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 556 attached [pid 555] <... set_robust_list resumed>) = 0 [pid 554] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 553] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 557 attached [pid 556] set_robust_list(0x5555574d4660, 24 [pid 555] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 554] <... openat resumed>) = 3 [pid 553] <... write resumed>) = 262144 [pid 554] write(3, "1000", 4 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 558 [pid 554] <... write resumed>) = 4 [pid 554] close(3) = 0 [pid 554] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 556] <... set_robust_list resumed>) = 0 [pid 555] <... prctl resumed>) = 0 [pid 554] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 554] memfd_create("syzkaller", 0 [pid 556] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 555] setpgid(0, 0 [pid 557] set_robust_list(0x5555574d4660, 24 [pid 554] <... memfd_create resumed>) = 4 [pid 554] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 553] munmap(0x7f1bc18a3000, 138412032 [pid 557] <... set_robust_list resumed>) = 0 [pid 556] <... prctl resumed>) = 0 [pid 555] <... setpgid resumed>) = 0 [pid 554] <... mmap resumed>) = 0x7f1bc18a3000 [pid 553] <... munmap resumed>) = 0 [pid 557] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 556] setpgid(0, 0 [pid 555] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 554] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 553] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 5 [pid 553] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 553] ioctl(5, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 558 attached [pid 558] set_robust_list(0x5555574d4660, 24) = 0 [pid 558] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 558] setpgid(0, 0) = 0 [pid 558] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 553] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 558] write(3, "1000", 4 [pid 553] close(5 [pid 558] <... write resumed>) = 4 [pid 553] <... close resumed>) = 0 [pid 558] close(3 [pid 553] close(4 [pid 558] <... close resumed>) = 0 [pid 553] <... close resumed>) = 0 [pid 558] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 553] exit_group(0 [pid 558] <... openat resumed>) = 3 [pid 554] <... write resumed>) = 262144 [pid 553] <... exit_group resumed>) = ? [pid 558] ioctl(3, BLKSECDISCARD, [0, 0] [pid 553] +++ exited with 0 +++ [pid 558] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 558] memfd_create("syzkaller", 0) = 4 [pid 554] munmap(0x7f1bc18a3000, 138412032 [pid 558] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 554] <... munmap resumed>) = 0 [pid 558] <... mmap resumed>) = 0x7f1bc18a3000 [pid 554] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 558] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 555] <... openat resumed>) = 3 [pid 554] ioctl(5, LOOP_SET_FD, 4 [pid 556] <... setpgid resumed>) = 0 [pid 557] <... prctl resumed>) = 0 [pid 555] write(3, "1000", 4 [pid 554] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=553, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 555] <... write resumed>) = 4 [pid 554] ioctl(5, LOOP_CLR_FD [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 555] close(3 [pid 554] <... ioctl resumed>) = 0 [pid 555] <... close resumed>) = 0 [pid 358] <... restart_syscall resumed>) = 0 [pid 555] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 555] <... openat resumed>) = 3 [pid 358] ioctl(3, LOOP_CLR_FD [pid 556] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 555] ioctl(3, BLKSECDISCARD, [0, 0] [pid 358] <... ioctl resumed>) = 0 [pid 358] close(3 [pid 555] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 558] <... write resumed>) = 262144 [pid 557] setpgid(0, 0 [pid 556] <... openat resumed>) = 3 [pid 358] <... close resumed>) = 0 [pid 554] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 554] close(5 [pid 557] <... setpgid resumed>) = 0 [pid 556] write(3, "1000", 4 [pid 555] memfd_create("syzkaller", 0 [pid 554] <... close resumed>) = 0 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 554] close(4 [pid 557] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 556] <... write resumed>) = 4 [pid 555] <... memfd_create resumed>) = 4 [pid 554] <... close resumed>) = 0 [pid 554] exit_group(0 [pid 558] munmap(0x7f1bc18a3000, 138412032 [pid 554] <... exit_group resumed>) = ? [pid 558] <... munmap resumed>) = 0 [pid 557] <... openat resumed>) = 3 [pid 556] close(3 [pid 555] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 554] +++ exited with 0 +++ [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 559 [pid 558] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 5 [pid 558] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 558] ioctl(5, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 559 attached [pid 557] write(3, "1000", 4 [pid 556] <... close resumed>) = 0 [pid 555] <... mmap resumed>) = 0x7f1bc18a3000 [pid 557] <... write resumed>) = 4 [pid 556] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 559] set_robust_list(0x5555574d4660, 24) = 0 [pid 559] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 559] setpgid(0, 0) = 0 [pid 558] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 558] close(5) = 0 [pid 558] close(4) = 0 [pid 557] close(3 [pid 556] <... openat resumed>) = 3 [pid 555] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=554, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 558] exit_group(0 [pid 557] <... close resumed>) = 0 [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 558] <... exit_group resumed>) = ? [pid 556] ioctl(3, BLKSECDISCARD, [0, 0] [pid 559] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 558] +++ exited with 0 +++ [pid 557] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 556] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 356] <... restart_syscall resumed>) = 0 [pid 559] <... openat resumed>) = 3 [pid 557] <... openat resumed>) = 3 [pid 556] memfd_create("syzkaller", 0 [pid 559] write(3, "1000", 4) = 4 [pid 559] close(3) = 0 [pid 559] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=558, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 557] ioctl(3, BLKSECDISCARD, [0, 0] [pid 556] <... memfd_create resumed>) = 4 [pid 356] <... openat resumed>) = 3 [pid 559] <... openat resumed>) = 3 [pid 559] ioctl(3, BLKSECDISCARD, [0, 0] [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 559] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 557] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 556] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 356] ioctl(3, LOOP_CLR_FD [pid 559] memfd_create("syzkaller", 0 [pid 557] memfd_create("syzkaller", 0 [pid 556] <... mmap resumed>) = 0x7f1bc18a3000 [pid 357] <... openat resumed>) = 3 [pid 356] <... ioctl resumed>) = 0 [pid 559] <... memfd_create resumed>) = 4 [pid 557] <... memfd_create resumed>) = 4 [pid 559] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 559] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 557] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 556] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 357] ioctl(3, LOOP_CLR_FD [pid 356] close(3 [pid 557] <... mmap resumed>) = 0x7f1bc18a3000 [pid 357] <... ioctl resumed>) = 0 [pid 357] close(3 [pid 356] <... close resumed>) = 0 [pid 559] <... write resumed>) = 262144 [pid 559] munmap(0x7f1bc18a3000, 138412032) = 0 [pid 559] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 557] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 357] <... close resumed>) = 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 559] <... openat resumed>) = 5 [pid 559] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 559] ioctl(5, LOOP_CLR_FD) = 0 [pid 557] <... write resumed>) = 262144 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 559] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 559] close(5) = 0 [pid 559] close(4 [pid 556] <... write resumed>) = 262144 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 560 [pid 559] <... close resumed>) = 0 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 561 [pid 555] <... write resumed>) = 262144 [pid 555] munmap(0x7f1bc18a3000, 138412032./strace-static-x86_64: Process 561 attached ./strace-static-x86_64: Process 560 attached [pid 557] munmap(0x7f1bc18a3000, 138412032 [pid 556] munmap(0x7f1bc18a3000, 138412032 [pid 555] <... munmap resumed>) = 0 [pid 561] set_robust_list(0x5555574d4660, 24 [pid 560] set_robust_list(0x5555574d4660, 24 [pid 559] exit_group(0 [pid 557] <... munmap resumed>) = 0 [pid 556] <... munmap resumed>) = 0 [pid 555] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 557] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 556] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 555] <... openat resumed>) = 5 [pid 557] <... openat resumed>) = 5 [pid 556] <... openat resumed>) = 5 [pid 555] ioctl(5, LOOP_SET_FD, 4 [pid 560] <... set_robust_list resumed>) = 0 [pid 557] ioctl(5, LOOP_SET_FD, 4 [pid 556] ioctl(5, LOOP_SET_FD, 4 [pid 555] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 560] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 557] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 556] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 555] ioctl(5, LOOP_CLR_FD [pid 560] <... prctl resumed>) = 0 [pid 557] ioctl(5, LOOP_CLR_FD [pid 556] ioctl(5, LOOP_CLR_FD [pid 555] <... ioctl resumed>) = 0 [pid 560] setpgid(0, 0 [pid 557] <... ioctl resumed>) = 0 [pid 556] <... ioctl resumed>) = 0 [pid 560] <... setpgid resumed>) = 0 [pid 561] <... set_robust_list resumed>) = 0 [pid 560] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 559] <... exit_group resumed>) = ? [pid 561] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 560] <... openat resumed>) = 3 [pid 561] <... prctl resumed>) = 0 [pid 560] write(3, "1000", 4 [pid 559] +++ exited with 0 +++ [pid 557] ioctl(5, LOOP_SET_FD, 4 [pid 556] ioctl(5, LOOP_SET_FD, 4 [pid 555] ioctl(5, LOOP_SET_FD, 4 [pid 561] setpgid(0, 0 [pid 560] <... write resumed>) = 4 [pid 557] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 556] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 555] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=559, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 561] <... setpgid resumed>) = 0 [pid 560] close(3 [pid 557] close(5 [pid 556] close(5 [pid 555] close(5 [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 561] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 560] <... close resumed>) = 0 [pid 557] <... close resumed>) = 0 [pid 556] <... close resumed>) = 0 [pid 555] <... close resumed>) = 0 [pid 358] <... restart_syscall resumed>) = 0 [pid 561] <... openat resumed>) = 3 [pid 560] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 557] close(4 [pid 556] close(4 [pid 555] close(4 [pid 561] write(3, "1000", 4 [pid 560] <... openat resumed>) = 3 [pid 557] <... close resumed>) = 0 [pid 556] <... close resumed>) = 0 [pid 555] <... close resumed>) = 0 [pid 561] <... write resumed>) = 4 [pid 560] ioctl(3, BLKSECDISCARD, [0, 0] [pid 557] exit_group(0 [pid 556] exit_group(0 [pid 555] exit_group(0 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 561] close(3 [pid 560] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 557] <... exit_group resumed>) = ? [pid 556] <... exit_group resumed>) = ? [pid 555] <... exit_group resumed>) = ? [pid 358] <... openat resumed>) = 3 [pid 561] <... close resumed>) = 0 [pid 560] memfd_create("syzkaller", 0 [pid 557] +++ exited with 0 +++ [pid 556] +++ exited with 0 +++ [pid 555] +++ exited with 0 +++ [pid 358] ioctl(3, LOOP_CLR_FD [pid 561] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 560] <... memfd_create resumed>) = 4 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=555, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=556, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=557, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] <... ioctl resumed>) = 0 [pid 561] <... openat resumed>) = 3 [pid 560] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 358] close(3 [pid 561] ioctl(3, BLKSECDISCARD, [0, 0] [pid 560] <... mmap resumed>) = 0x7f1bc18a3000 [pid 360] <... restart_syscall resumed>) = 0 [pid 359] <... restart_syscall resumed>) = 0 [pid 358] <... close resumed>) = 0 [pid 561] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 560] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 561] memfd_create("syzkaller", 0 [pid 560] <... write resumed>) = 262144 [pid 561] <... memfd_create resumed>) = 4 [pid 560] munmap(0x7f1bc18a3000, 138412032 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 563 [pid 561] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 560] <... munmap resumed>) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 360] <... openat resumed>) = 3 [pid 359] <... openat resumed>) = 3 [pid 561] <... mmap resumed>) = 0x7f1bc18a3000 [pid 560] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 361] <... openat resumed>) = 3 [pid 360] ioctl(3, LOOP_CLR_FD [pid 359] ioctl(3, LOOP_CLR_FD [pid 561] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 560] <... openat resumed>) = 5 [pid 361] ioctl(3, LOOP_CLR_FD [pid 360] <... ioctl resumed>) = 0 [pid 359] <... ioctl resumed>) = 0 [pid 561] <... write resumed>) = 262144 [pid 560] ioctl(5, LOOP_SET_FD, 4 [pid 361] <... ioctl resumed>) = 0 [pid 360] close(3 [pid 359] close(3 [pid 561] munmap(0x7f1bc18a3000, 138412032 [pid 560] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] close(3 [pid 359] <... close resumed>) = 0 [pid 561] <... munmap resumed>) = 0 [pid 560] ioctl(5, LOOP_CLR_FD [pid 361] <... close resumed>) = 0 [pid 360] <... close resumed>) = 0 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 561] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 560] <... ioctl resumed>) = 0 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 561] <... openat resumed>) = 5 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 564 [pid 561] ioctl(5, LOOP_SET_FD, 4 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 565 [pid 561] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 566 [pid 561] ioctl(5, LOOP_CLR_FD) = 0 [pid 560] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 560] close(5) = 0 [pid 560] close(4./strace-static-x86_64: Process 565 attached ./strace-static-x86_64: Process 564 attached ) = 0 [pid 564] set_robust_list(0x5555574d4660, 24 [pid 561] ioctl(5, LOOP_SET_FD, 4 [pid 560] exit_group(0 [pid 565] set_robust_list(0x5555574d4660, 24 [pid 564] <... set_robust_list resumed>) = 0 [pid 561] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 560] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 563 attached [pid 561] close(5 [pid 560] +++ exited with 0 +++ [pid 564] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 565] <... set_robust_list resumed>) = 0 [pid 565] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 564] <... prctl resumed>) = 0 [pid 563] set_robust_list(0x5555574d4660, 24 [pid 561] <... close resumed>) = 0 [pid 565] <... prctl resumed>) = 0 [pid 564] setpgid(0, 0 [pid 563] <... set_robust_list resumed>) = 0 [pid 561] close(4 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=560, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 565] setpgid(0, 0 [pid 564] <... setpgid resumed>) = 0 [pid 563] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 561] <... close resumed>) = 0 [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 565] <... setpgid resumed>) = 0 [pid 564] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 563] <... prctl resumed>) = 0 [pid 561] exit_group(0 [pid 356] <... restart_syscall resumed>) = 0 [pid 565] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 564] <... openat resumed>) = 3 [pid 563] setpgid(0, 0 [pid 561] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 566 attached [pid 565] <... openat resumed>) = 3 [pid 564] write(3, "1000", 4 [pid 563] <... setpgid resumed>) = 0 [pid 561] +++ exited with 0 +++ [pid 566] set_robust_list(0x5555574d4660, 24 [pid 565] write(3, "1000", 4 [pid 564] <... write resumed>) = 4 [pid 563] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 566] <... set_robust_list resumed>) = 0 [pid 565] <... write resumed>) = 4 [pid 564] close(3 [pid 563] <... openat resumed>) = 3 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=561, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] <... openat resumed>) = 3 [pid 566] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 565] close(3 [pid 564] <... close resumed>) = 0 [pid 563] write(3, "1000", 4 [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 356] ioctl(3, LOOP_CLR_FD [pid 566] <... prctl resumed>) = 0 [pid 565] <... close resumed>) = 0 [pid 564] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 563] <... write resumed>) = 4 [pid 357] <... restart_syscall resumed>) = 0 [pid 356] <... ioctl resumed>) = 0 [pid 566] setpgid(0, 0 [pid 565] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 564] <... openat resumed>) = 3 [pid 563] close(3 [pid 356] close(3 [pid 566] <... setpgid resumed>) = 0 [pid 565] <... openat resumed>) = 3 [pid 564] ioctl(3, BLKSECDISCARD, [0, 0] [pid 563] <... close resumed>) = 0 [pid 356] <... close resumed>) = 0 [pid 566] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 565] ioctl(3, BLKSECDISCARD, [0, 0] [pid 564] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 563] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 566] <... openat resumed>) = 3 [pid 565] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 564] memfd_create("syzkaller", 0 [pid 563] <... openat resumed>) = 3 [pid 357] <... openat resumed>) = 3 [pid 566] write(3, "1000", 4 [pid 565] memfd_create("syzkaller", 0 [pid 564] <... memfd_create resumed>) = 4 [pid 563] ioctl(3, BLKSECDISCARD, [0, 0] [pid 357] ioctl(3, LOOP_CLR_FD [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 567 [pid 566] <... write resumed>) = 4 [pid 565] <... memfd_create resumed>) = 4 [pid 564] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 563] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 357] <... ioctl resumed>) = 0 [pid 566] close(3 [pid 565] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 564] <... mmap resumed>) = 0x7f1bc18a3000 [pid 563] memfd_create("syzkaller", 0 [pid 357] close(3 [pid 566] <... close resumed>) = 0 [pid 565] <... mmap resumed>) = 0x7f1bc18a3000 [pid 563] <... memfd_create resumed>) = 4 [pid 357] <... close resumed>) = 0 [pid 566] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 563] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 566] <... openat resumed>) = 3 [pid 563] <... mmap resumed>) = 0x7f1bc18a3000 [pid 566] ioctl(3, BLKSECDISCARD, [0, 0] [pid 564] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 563] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 565] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 568 [pid 566] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 564] <... write resumed>) = 262144 [pid 563] <... write resumed>) = 262144 [pid 566] memfd_create("syzkaller", 0 [pid 563] munmap(0x7f1bc18a3000, 138412032 [pid 566] <... memfd_create resumed>) = 4 [pid 565] <... write resumed>) = 262144 [pid 564] munmap(0x7f1bc18a3000, 138412032 [pid 563] <... munmap resumed>) = 0 [pid 566] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 565] munmap(0x7f1bc18a3000, 138412032 [pid 563] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 566] <... mmap resumed>) = 0x7f1bc18a3000 [pid 564] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 567 attached [pid 566] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 565] <... munmap resumed>) = 0 [pid 564] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 563] <... openat resumed>) = 5 [pid 566] <... write resumed>) = 262144 [pid 565] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 564] <... openat resumed>) = 5 [pid 563] ioctl(5, LOOP_SET_FD, 4 [pid 567] set_robust_list(0x5555574d4660, 24) = 0 [pid 566] munmap(0x7f1bc18a3000, 138412032 [pid 565] <... openat resumed>) = 5 [pid 564] ioctl(5, LOOP_SET_FD, 4 [pid 563] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 567] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 566] <... munmap resumed>) = 0 [pid 565] ioctl(5, LOOP_SET_FD, 4 [pid 564] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 563] ioctl(5, LOOP_CLR_FD [pid 567] <... prctl resumed>) = 0 [pid 566] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 565] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 564] ioctl(5, LOOP_CLR_FD [pid 563] <... ioctl resumed>) = 0 [pid 567] setpgid(0, 0 [pid 566] <... openat resumed>) = 5 [pid 565] ioctl(5, LOOP_CLR_FD [pid 564] <... ioctl resumed>) = 0 [pid 567] <... setpgid resumed>) = 0 [pid 566] ioctl(5, LOOP_SET_FD, 4 [pid 565] <... ioctl resumed>) = 0 [pid 567] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 566] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 567] <... openat resumed>) = 3 [pid 566] ioctl(5, LOOP_CLR_FD./strace-static-x86_64: Process 568 attached [pid 567] write(3, "1000", 4 [pid 566] <... ioctl resumed>) = 0 [pid 568] set_robust_list(0x5555574d4660, 24 [pid 567] <... write resumed>) = 4 [pid 563] ioctl(5, LOOP_SET_FD, 4 [pid 568] <... set_robust_list resumed>) = 0 [pid 567] close(3 [pid 564] ioctl(5, LOOP_SET_FD, 4 [pid 563] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 568] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 567] <... close resumed>) = 0 [pid 565] ioctl(5, LOOP_SET_FD, 4 [pid 564] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 563] close(5 [pid 568] <... prctl resumed>) = 0 [pid 567] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 565] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 564] close(5 [pid 563] <... close resumed>) = 0 [pid 568] setpgid(0, 0 [pid 567] <... openat resumed>) = 3 [pid 566] ioctl(5, LOOP_SET_FD, 4 [pid 565] close(5 [pid 564] <... close resumed>) = 0 [pid 563] close(4 [pid 568] <... setpgid resumed>) = 0 [pid 567] ioctl(3, BLKSECDISCARD, [0, 0] [pid 566] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 565] <... close resumed>) = 0 [pid 564] close(4 [pid 563] <... close resumed>) = 0 [pid 568] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 567] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 566] close(5 [pid 565] close(4 [pid 563] exit_group(0 [pid 568] <... openat resumed>) = 3 [pid 566] <... close resumed>) = 0 [pid 564] <... close resumed>) = 0 [pid 563] <... exit_group resumed>) = ? [pid 568] write(3, "1000", 4 [pid 567] memfd_create("syzkaller", 0 [pid 566] close(4 [pid 565] <... close resumed>) = 0 [pid 563] +++ exited with 0 +++ [pid 568] <... write resumed>) = 4 [pid 567] <... memfd_create resumed>) = 4 [pid 566] <... close resumed>) = 0 [pid 565] exit_group(0 [pid 564] exit_group(0 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=563, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 568] close(3 [pid 567] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 566] exit_group(0 [pid 565] <... exit_group resumed>) = ? [pid 564] <... exit_group resumed>) = ? [pid 568] <... close resumed>) = 0 [pid 567] <... mmap resumed>) = 0x7f1bc18a3000 [pid 566] <... exit_group resumed>) = ? [pid 568] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 566] +++ exited with 0 +++ [pid 565] +++ exited with 0 +++ [pid 564] +++ exited with 0 +++ [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 568] <... openat resumed>) = 3 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=565, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=564, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] <... openat resumed>) = 3 [pid 568] ioctl(3, BLKSECDISCARD, [0, 0] [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 358] ioctl(3, LOOP_CLR_FD [pid 568] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 361] <... restart_syscall resumed>) = 0 [pid 359] <... restart_syscall resumed>) = 0 [pid 358] <... ioctl resumed>) = 0 [pid 568] memfd_create("syzkaller", 0 [pid 358] close(3 [pid 568] <... memfd_create resumed>) = 4 [pid 567] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 358] <... close resumed>) = 0 [pid 568] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 568] <... mmap resumed>) = 0x7f1bc18a3000 [pid 567] <... write resumed>) = 262144 [pid 361] <... openat resumed>) = 3 [pid 359] <... openat resumed>) = 3 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=566, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 568] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 567] munmap(0x7f1bc18a3000, 138412032 [pid 361] ioctl(3, LOOP_CLR_FD [pid 359] ioctl(3, LOOP_CLR_FD [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 569 ./strace-static-x86_64: Process 569 attached [pid 568] <... write resumed>) = 262144 [pid 567] <... munmap resumed>) = 0 [pid 361] <... ioctl resumed>) = 0 [pid 359] <... ioctl resumed>) = 0 [pid 569] set_robust_list(0x5555574d4660, 24 [pid 568] munmap(0x7f1bc18a3000, 138412032 [pid 567] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 361] close(3 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 359] close(3 [pid 569] <... set_robust_list resumed>) = 0 [pid 568] <... munmap resumed>) = 0 [pid 567] <... openat resumed>) = 5 [pid 361] <... close resumed>) = 0 [pid 360] <... openat resumed>) = 3 [pid 359] <... close resumed>) = 0 [pid 569] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 568] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 567] ioctl(5, LOOP_SET_FD, 4 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 360] ioctl(3, LOOP_CLR_FD [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 569] <... prctl resumed>) = 0 [pid 568] <... openat resumed>) = 5 [pid 567] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] <... ioctl resumed>) = 0 [pid 569] setpgid(0, 0 [pid 568] ioctl(5, LOOP_SET_FD, 4 [pid 567] ioctl(5, LOOP_CLR_FD [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 570 [pid 360] close(3 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 571 [pid 569] <... setpgid resumed>) = 0 [pid 568] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 567] <... ioctl resumed>) = 0 [pid 360] <... close resumed>) = 0 [pid 569] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 568] ioctl(5, LOOP_CLR_FD [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 568] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 571 attached [pid 571] set_robust_list(0x5555574d4660, 24 [pid 569] <... openat resumed>) = 3 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 572 [pid 569] write(3, "1000", 4) = 4 [pid 569] close(3) = 0 [pid 569] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 567] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 569] <... openat resumed>) = 3 ./strace-static-x86_64: Process 570 attached [pid 568] ioctl(5, LOOP_SET_FD, 4 [pid 567] close(5 [pid 569] ioctl(3, BLKSECDISCARD, [0, 0] [pid 570] set_robust_list(0x5555574d4660, 24 [pid 568] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 567] <... close resumed>) = 0 [pid 569] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 570] <... set_robust_list resumed>) = 0 [pid 569] memfd_create("syzkaller", 0 [pid 568] close(5 [pid 567] close(4 [pid 569] <... memfd_create resumed>) = 4 [pid 568] <... close resumed>) = 0 [pid 568] close(4 [pid 570] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 569] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 568] <... close resumed>) = 0 [pid 567] <... close resumed>) = 0 [pid 570] <... prctl resumed>) = 0 [pid 569] <... mmap resumed>) = 0x7f1bc18a3000 [pid 568] exit_group(0 [pid 567] exit_group(0 [pid 568] <... exit_group resumed>) = ? [pid 567] <... exit_group resumed>) = ? [pid 568] +++ exited with 0 +++ [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=568, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 571] <... set_robust_list resumed>) = 0 [pid 571] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 569] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 571] <... prctl resumed>) = 0 [pid 571] setpgid(0, 0) = 0 [pid 571] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 357] <... restart_syscall resumed>) = 0 [pid 571] <... openat resumed>) = 3 [pid 567] +++ exited with 0 +++ [pid 571] write(3, "1000", 4) = 4 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=567, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 571] close(3 [pid 357] <... openat resumed>) = 3 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 569] <... write resumed>) = 262144 [pid 571] <... close resumed>) = 0 [pid 570] setpgid(0, 0 [pid 569] munmap(0x7f1bc18a3000, 138412032 [pid 357] ioctl(3, LOOP_CLR_FD [pid 356] <... openat resumed>) = 3 [pid 571] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 570] <... setpgid resumed>) = 0 [pid 569] <... munmap resumed>) = 0 [pid 357] <... ioctl resumed>) = 0 [pid 356] ioctl(3, LOOP_CLR_FD [pid 571] <... openat resumed>) = 3 [pid 570] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 569] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 357] close(3 [pid 356] <... ioctl resumed>) = 0 [pid 571] ioctl(3, BLKSECDISCARD, [0, 0] [pid 570] <... openat resumed>) = 3 [pid 569] <... openat resumed>) = 5 [pid 357] <... close resumed>) = 0 [pid 356] close(3 [pid 571] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 570] write(3, "1000", 4 [pid 569] ioctl(5, LOOP_SET_FD, 4 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] <... close resumed>) = 0 [pid 571] memfd_create("syzkaller", 0 [pid 570] <... write resumed>) = 4 [pid 569] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 573 attached [pid 571] <... memfd_create resumed>) = 4 [pid 570] close(3 [pid 569] ioctl(5, LOOP_CLR_FD [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 573 ./strace-static-x86_64: Process 572 attached [pid 573] set_robust_list(0x5555574d4660, 24 [pid 571] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 570] <... close resumed>) = 0 [pid 569] <... ioctl resumed>) = 0 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 574 [pid 573] <... set_robust_list resumed>) = 0 [pid 572] set_robust_list(0x5555574d4660, 24 [pid 571] <... mmap resumed>) = 0x7f1bc18a3000 [pid 570] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT./strace-static-x86_64: Process 574 attached [pid 573] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 572] <... set_robust_list resumed>) = 0 [pid 571] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 570] <... openat resumed>) = 3 [pid 574] set_robust_list(0x5555574d4660, 24 [pid 573] <... prctl resumed>) = 0 [pid 572] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 571] <... write resumed>) = 262144 [pid 570] ioctl(3, BLKSECDISCARD, [0, 0] [pid 574] <... set_robust_list resumed>) = 0 [pid 573] setpgid(0, 0 [pid 572] <... prctl resumed>) = 0 [pid 570] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 569] ioctl(5, LOOP_SET_FD, 4 [pid 574] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 573] <... setpgid resumed>) = 0 [pid 572] setpgid(0, 0 [pid 570] memfd_create("syzkaller", 0 [pid 569] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 574] <... prctl resumed>) = 0 [pid 573] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 572] <... setpgid resumed>) = 0 [pid 571] munmap(0x7f1bc18a3000, 138412032 [pid 570] <... memfd_create resumed>) = 4 [pid 569] close(5 [pid 574] setpgid(0, 0 [pid 573] <... openat resumed>) = 3 [pid 572] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 571] <... munmap resumed>) = 0 [pid 570] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 569] <... close resumed>) = 0 [pid 574] <... setpgid resumed>) = 0 [pid 573] write(3, "1000", 4 [pid 572] <... openat resumed>) = 3 [pid 571] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 570] <... mmap resumed>) = 0x7f1bc18a3000 [pid 569] close(4 [pid 572] write(3, "1000", 4 [pid 571] <... openat resumed>) = 5 [pid 573] <... write resumed>) = 4 [pid 572] <... write resumed>) = 4 [pid 571] ioctl(5, LOOP_SET_FD, 4 [pid 569] <... close resumed>) = 0 [pid 572] close(3 [pid 571] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 572] <... close resumed>) = 0 [pid 571] ioctl(5, LOOP_CLR_FD [pid 572] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 571] <... ioctl resumed>) = 0 [pid 572] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 572] memfd_create("syzkaller", 0 [pid 573] close(3 [pid 572] <... memfd_create resumed>) = 4 [pid 570] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 574] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 573] <... close resumed>) = 0 [pid 572] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 569] exit_group(0 [pid 572] <... mmap resumed>) = 0x7f1bc18a3000 [pid 574] <... openat resumed>) = 3 [pid 573] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 572] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 571] ioctl(5, LOOP_SET_FD, 4 [pid 570] <... write resumed>) = 262144 [pid 569] <... exit_group resumed>) = ? [pid 574] write(3, "1000", 4 [pid 573] <... openat resumed>) = 3 [pid 572] <... write resumed>) = 262144 [pid 571] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 570] munmap(0x7f1bc18a3000, 138412032 [pid 572] munmap(0x7f1bc18a3000, 138412032 [pid 571] close(5 [pid 574] <... write resumed>) = 4 [pid 573] ioctl(3, BLKSECDISCARD, [0, 0] [pid 572] <... munmap resumed>) = 0 [pid 571] <... close resumed>) = 0 [pid 569] +++ exited with 0 +++ [pid 574] close(3 [pid 573] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 572] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 571] close(4 [pid 570] <... munmap resumed>) = 0 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=569, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 574] <... close resumed>) = 0 [pid 573] memfd_create("syzkaller", 0 [pid 572] <... openat resumed>) = 5 [pid 571] <... close resumed>) = 0 [pid 570] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 574] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 573] <... memfd_create resumed>) = 4 [pid 572] ioctl(5, LOOP_SET_FD, 4 [pid 571] exit_group(0 [pid 570] <... openat resumed>) = 5 [pid 574] <... openat resumed>) = 3 [pid 573] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 572] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 571] <... exit_group resumed>) = ? [pid 570] ioctl(5, LOOP_SET_FD, 4 [pid 574] ioctl(3, BLKSECDISCARD, [0, 0] [pid 573] <... mmap resumed>) = 0x7f1bc18a3000 [pid 572] ioctl(5, LOOP_CLR_FD [pid 571] +++ exited with 0 +++ [pid 570] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 574] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 572] <... ioctl resumed>) = 0 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=571, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 359] <... openat resumed>) = 3 [pid 358] <... openat resumed>) = 3 [pid 359] ioctl(3, LOOP_CLR_FD [pid 358] ioctl(3, LOOP_CLR_FD [pid 359] <... ioctl resumed>) = 0 [pid 358] <... ioctl resumed>) = 0 [pid 359] close(3 [pid 358] close(3 [pid 573] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 359] <... close resumed>) = 0 [pid 358] <... close resumed>) = 0 [pid 574] memfd_create("syzkaller", 0 [pid 572] ioctl(5, LOOP_SET_FD, 4 [pid 570] ioctl(5, LOOP_CLR_FD [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 574] <... memfd_create resumed>) = 4 [pid 573] <... write resumed>) = 262144 [pid 572] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 570] <... ioctl resumed>) = 0 [pid 574] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 573] munmap(0x7f1bc18a3000, 138412032 [pid 572] close(5 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 575 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 576 [pid 574] <... mmap resumed>) = 0x7f1bc18a3000 [pid 573] <... munmap resumed>) = 0 [pid 572] <... close resumed>) = 0 [pid 572] close(4) = 0 [pid 574] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 573] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 572] exit_group(0) = ? [pid 572] +++ exited with 0 +++ [pid 574] <... write resumed>) = 262144 [pid 573] <... openat resumed>) = 5 [pid 570] ioctl(5, LOOP_SET_FD, 4 [pid 574] munmap(0x7f1bc18a3000, 138412032 [pid 573] ioctl(5, LOOP_SET_FD, 4 [pid 570] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=572, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 573] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 570] close(5 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 574] <... munmap resumed>) = 0 [pid 573] ioctl(5, LOOP_CLR_FD [pid 570] <... close resumed>) = 0 [pid 360] <... openat resumed>) = 3 [pid 574] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 573] <... ioctl resumed>) = 0 [pid 570] close(4 [pid 360] ioctl(3, LOOP_CLR_FD [pid 574] <... openat resumed>) = 5 ./strace-static-x86_64: Process 575 attached [pid 570] <... close resumed>) = 0 [pid 360] <... ioctl resumed>) = 0 [pid 574] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 570] exit_group(0 [pid 360] close(3 [pid 574] ioctl(5, LOOP_CLR_FD [pid 570] <... exit_group resumed>) = ? [pid 360] <... close resumed>) = 0 [pid 570] +++ exited with 0 +++ [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 574] <... ioctl resumed>) = 0 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=570, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 575] set_robust_list(0x5555574d4660, 24 [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 575] <... set_robust_list resumed>) = 0 [pid 575] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 576 attached ) = 0 [pid 573] ioctl(5, LOOP_SET_FD, 4 [pid 361] <... restart_syscall resumed>) = 0 [pid 576] set_robust_list(0x5555574d4660, 24 [pid 575] setpgid(0, 0 [pid 573] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 577 [pid 576] <... set_robust_list resumed>) = 0 [pid 575] <... setpgid resumed>) = 0 [pid 573] close(5 [pid 576] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 575] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 573] <... close resumed>) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 576] <... prctl resumed>) = 0 [pid 575] <... openat resumed>) = 3 [pid 574] ioctl(5, LOOP_SET_FD, 4 [pid 573] close(4 [pid 361] <... openat resumed>) = 3 [pid 575] write(3, "1000", 4 [pid 574] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] ioctl(3, LOOP_CLR_FD [pid 575] <... write resumed>) = 4 [pid 361] <... ioctl resumed>) = 0 [pid 575] close(3 [pid 361] close(3 [pid 575] <... close resumed>) = 0 [pid 361] <... close resumed>) = 0 [pid 576] setpgid(0, 0 [pid 575] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 574] close(5 [pid 573] <... close resumed>) = 0 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 576] <... setpgid resumed>) = 0 [pid 575] <... openat resumed>) = 3 [pid 574] <... close resumed>) = 0 [pid 573] exit_group(0 [pid 576] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 575] ioctl(3, BLKSECDISCARD, [0, 0] [pid 574] close(4 [pid 573] <... exit_group resumed>) = ? [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 578 [pid 575] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 575] memfd_create("syzkaller", 0./strace-static-x86_64: Process 577 attached ) = 4 [pid 577] set_robust_list(0x5555574d4660, 24 [pid 575] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 574] <... close resumed>) = 0 [pid 577] <... set_robust_list resumed>) = 0 [pid 575] <... mmap resumed>) = 0x7f1bc18a3000 [pid 577] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 576] <... openat resumed>) = 3 [pid 575] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 574] exit_group(0 [pid 573] +++ exited with 0 +++ ./strace-static-x86_64: Process 578 attached [pid 577] <... prctl resumed>) = 0 [pid 576] write(3, "1000", 4 [pid 575] <... write resumed>) = 262144 [pid 574] <... exit_group resumed>) = ? [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=573, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 577] setpgid(0, 0 [pid 576] <... write resumed>) = 4 [pid 577] <... setpgid resumed>) = 0 [pid 574] +++ exited with 0 +++ [pid 578] set_robust_list(0x5555574d4660, 24 [pid 577] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 576] close(3 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 578] <... set_robust_list resumed>) = 0 [pid 577] <... openat resumed>) = 3 [pid 576] <... close resumed>) = 0 [pid 357] <... openat resumed>) = 3 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=574, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 578] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 577] write(3, "1000", 4 [pid 576] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 575] munmap(0x7f1bc18a3000, 138412032 [pid 357] ioctl(3, LOOP_CLR_FD [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 578] <... prctl resumed>) = 0 [pid 577] <... write resumed>) = 4 [pid 576] <... openat resumed>) = 3 [pid 575] <... munmap resumed>) = 0 [pid 357] <... ioctl resumed>) = 0 [pid 356] <... restart_syscall resumed>) = 0 [pid 578] setpgid(0, 0 [pid 577] close(3 [pid 576] ioctl(3, BLKSECDISCARD, [0, 0] [pid 575] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 357] close(3 [pid 578] <... setpgid resumed>) = 0 [pid 577] <... close resumed>) = 0 [pid 576] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 575] <... openat resumed>) = 5 [pid 357] <... close resumed>) = 0 [pid 578] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 577] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 576] memfd_create("syzkaller", 0 [pid 575] ioctl(5, LOOP_SET_FD, 4 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 578] <... openat resumed>) = 3 [pid 577] <... openat resumed>) = 3 [pid 576] <... memfd_create resumed>) = 4 [pid 575] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] <... openat resumed>) = 3 [pid 578] write(3, "1000", 4 [pid 577] ioctl(3, BLKSECDISCARD, [0, 0] [pid 576] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 575] ioctl(5, LOOP_CLR_FD [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 579 [pid 356] ioctl(3, LOOP_CLR_FD [pid 578] <... write resumed>) = 4 [pid 577] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 576] <... mmap resumed>) = 0x7f1bc18a3000 [pid 575] <... ioctl resumed>) = 0 [pid 356] <... ioctl resumed>) = 0 [pid 578] close(3 [pid 577] memfd_create("syzkaller", 0 [pid 356] close(3 [pid 577] <... memfd_create resumed>) = 4 [pid 356] <... close resumed>) = 0 [pid 577] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 577] <... mmap resumed>) = 0x7f1bc18a3000 [pid 578] <... close resumed>) = 0 [pid 577] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 576] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 580 [pid 578] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 577] <... write resumed>) = 262144 [pid 576] <... write resumed>) = 262144 [pid 575] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 579 attached [pid 578] <... openat resumed>) = 3 [pid 577] munmap(0x7f1bc18a3000, 138412032 [pid 576] munmap(0x7f1bc18a3000, 138412032 [pid 575] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 579] set_robust_list(0x5555574d4660, 24 [pid 578] ioctl(3, BLKSECDISCARD, [0, 0] [pid 577] <... munmap resumed>) = 0 [pid 576] <... munmap resumed>) = 0 [pid 575] close(5 [pid 579] <... set_robust_list resumed>) = 0 [pid 578] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 577] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 576] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 575] <... close resumed>) = 0 [pid 579] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 578] memfd_create("syzkaller", 0 [pid 577] <... openat resumed>) = 5 [pid 576] <... openat resumed>) = 5 [pid 575] close(4 [pid 579] <... prctl resumed>) = 0 [pid 578] <... memfd_create resumed>) = 4 [pid 577] ioctl(5, LOOP_SET_FD, 4 [pid 576] ioctl(5, LOOP_SET_FD, 4 [pid 575] <... close resumed>) = 0 [pid 579] setpgid(0, 0 [pid 578] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 577] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 576] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 575] exit_group(0 [pid 579] <... setpgid resumed>) = 0 [pid 578] <... mmap resumed>) = 0x7f1bc18a3000 [pid 577] ioctl(5, LOOP_CLR_FD [pid 576] ioctl(5, LOOP_CLR_FD [pid 575] <... exit_group resumed>) = ? [pid 579] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 577] <... ioctl resumed>) = 0 [pid 575] +++ exited with 0 +++ [pid 579] <... openat resumed>) = 3 [pid 579] write(3, "1000", 4 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=575, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 579] <... write resumed>) = 4 [pid 578] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 576] <... ioctl resumed>) = 0 [pid 359] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 580 attached [pid 579] close(3 [pid 580] set_robust_list(0x5555574d4660, 24 [pid 579] <... close resumed>) = 0 [pid 359] <... restart_syscall resumed>) = 0 [pid 580] <... set_robust_list resumed>) = 0 [pid 579] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 577] ioctl(5, LOOP_SET_FD, 4 [pid 580] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 579] <... openat resumed>) = 3 [pid 578] <... write resumed>) = 262144 [pid 577] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 580] <... prctl resumed>) = 0 [pid 579] ioctl(3, BLKSECDISCARD, [0, 0] [pid 578] munmap(0x7f1bc18a3000, 138412032 [pid 577] close(5 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 580] setpgid(0, 0 [pid 579] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 578] <... munmap resumed>) = 0 [pid 577] <... close resumed>) = 0 [pid 359] <... openat resumed>) = 3 [pid 580] <... setpgid resumed>) = 0 [pid 579] memfd_create("syzkaller", 0 [pid 578] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 577] close(4 [pid 359] ioctl(3, LOOP_CLR_FD [pid 580] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 579] <... memfd_create resumed>) = 4 [pid 578] <... openat resumed>) = 5 [pid 577] <... close resumed>) = 0 [pid 576] ioctl(5, LOOP_SET_FD, 4 [pid 359] <... ioctl resumed>) = 0 [pid 580] <... openat resumed>) = 3 [pid 579] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 578] ioctl(5, LOOP_SET_FD, 4 [pid 577] exit_group(0 [pid 576] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] close(3 [pid 580] write(3, "1000", 4 [pid 579] <... mmap resumed>) = 0x7f1bc18a3000 [pid 578] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 577] <... exit_group resumed>) = ? [pid 576] close(5 [pid 359] <... close resumed>) = 0 [pid 580] <... write resumed>) = 4 [pid 579] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 578] ioctl(5, LOOP_CLR_FD [pid 577] +++ exited with 0 +++ [pid 576] <... close resumed>) = 0 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 580] close(3 [pid 579] <... write resumed>) = 262144 [pid 578] <... ioctl resumed>) = 0 [pid 576] close(4 [pid 580] <... close resumed>) = 0 [pid 579] munmap(0x7f1bc18a3000, 138412032 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 581 [pid 580] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 579] <... munmap resumed>) = 0 [pid 580] <... openat resumed>) = 3 [pid 579] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 576] <... close resumed>) = 0 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=577, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 581 attached [pid 580] ioctl(3, BLKSECDISCARD, [0, 0] [pid 579] <... openat resumed>) = 5 [pid 576] exit_group(0 [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 581] set_robust_list(0x5555574d4660, 24 [pid 580] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 579] ioctl(5, LOOP_SET_FD, 4 [pid 576] <... exit_group resumed>) = ? [pid 360] <... restart_syscall resumed>) = 0 [pid 581] <... set_robust_list resumed>) = 0 [pid 580] memfd_create("syzkaller", 0 [pid 579] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 578] ioctl(5, LOOP_SET_FD, 4 [pid 580] <... memfd_create resumed>) = 4 [pid 579] ioctl(5, LOOP_CLR_FD [pid 576] +++ exited with 0 +++ [pid 581] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 580] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 579] <... ioctl resumed>) = 0 [pid 578] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=576, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 581] <... prctl resumed>) = 0 [pid 580] <... mmap resumed>) = 0x7f1bc18a3000 [pid 578] close(5 [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 581] setpgid(0, 0 [pid 580] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 578] <... close resumed>) = 0 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 358] <... restart_syscall resumed>) = 0 [pid 581] <... setpgid resumed>) = 0 [pid 580] <... write resumed>) = 262144 [pid 578] close(4 [pid 360] <... openat resumed>) = 3 [pid 581] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 580] munmap(0x7f1bc18a3000, 138412032 [pid 579] ioctl(5, LOOP_SET_FD, 4 [pid 580] <... munmap resumed>) = 0 [pid 579] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 578] <... close resumed>) = 0 [pid 360] ioctl(3, LOOP_CLR_FD [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 581] <... openat resumed>) = 3 [pid 580] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 579] close(5 [pid 578] exit_group(0 [pid 360] <... ioctl resumed>) = 0 [pid 358] <... openat resumed>) = 3 [pid 581] write(3, "1000", 4 [pid 580] <... openat resumed>) = 5 [pid 579] <... close resumed>) = 0 [pid 578] <... exit_group resumed>) = ? [pid 360] close(3 [pid 358] ioctl(3, LOOP_CLR_FD [pid 581] <... write resumed>) = 4 [pid 580] ioctl(5, LOOP_SET_FD, 4 [pid 579] close(4 [pid 358] <... ioctl resumed>) = 0 [pid 581] close(3 [pid 580] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 579] <... close resumed>) = 0 [pid 578] +++ exited with 0 +++ [pid 360] <... close resumed>) = 0 [pid 358] close(3 [pid 581] <... close resumed>) = 0 [pid 580] ioctl(5, LOOP_CLR_FD [pid 579] exit_group(0 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=578, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] <... close resumed>) = 0 [pid 581] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 580] <... ioctl resumed>) = 0 [pid 579] <... exit_group resumed>) = ? [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 581] <... openat resumed>) = 3 [pid 579] +++ exited with 0 +++ [pid 581] ioctl(3, BLKSECDISCARD, [0, 0] [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 582 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 583 [pid 581] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 361] <... openat resumed>) = 3 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=579, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 581] memfd_create("syzkaller", 0 [pid 361] ioctl(3, LOOP_CLR_FD [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 581] <... memfd_create resumed>) = 4 [pid 580] ioctl(5, LOOP_SET_FD, 4 [pid 361] <... ioctl resumed>) = 0 [pid 357] <... restart_syscall resumed>) = 0 [pid 581] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 580] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] close(3 [pid 581] <... mmap resumed>) = 0x7f1bc18a3000 [pid 580] close(5 [pid 361] <... close resumed>) = 0 [pid 580] <... close resumed>) = 0 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 580] close(4 [pid 357] <... openat resumed>) = 3 [pid 581] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 580] <... close resumed>) = 0 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 584 [pid 357] ioctl(3, LOOP_CLR_FD [pid 580] exit_group(0 [pid 357] <... ioctl resumed>) = 0 [pid 580] <... exit_group resumed>) = ? [pid 357] close(3 [pid 581] <... write resumed>) = 262144 [pid 580] +++ exited with 0 +++ [pid 357] <... close resumed>) = 0 ./strace-static-x86_64: Process 582 attached [pid 581] munmap(0x7f1bc18a3000, 138412032 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 582] set_robust_list(0x5555574d4660, 24 [pid 581] <... munmap resumed>) = 0 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=580, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 582] <... set_robust_list resumed>) = 0 [pid 581] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 585 [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 582] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 581] <... openat resumed>) = 5 [pid 356] <... restart_syscall resumed>) = 0 [pid 582] <... prctl resumed>) = 0 [pid 581] ioctl(5, LOOP_SET_FD, 4 [pid 582] setpgid(0, 0 [pid 581] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 582] <... setpgid resumed>) = 0 [pid 581] ioctl(5, LOOP_CLR_FD [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 583 attached [pid 582] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 581] <... ioctl resumed>) = 0 [pid 356] <... openat resumed>) = 3 [pid 583] set_robust_list(0x5555574d4660, 24 [pid 582] <... openat resumed>) = 3 [pid 356] ioctl(3, LOOP_CLR_FD [pid 583] <... set_robust_list resumed>) = 0 [pid 356] <... ioctl resumed>) = 0 [pid 583] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 582] write(3, "1000", 4 [pid 356] close(3./strace-static-x86_64: Process 585 attached ./strace-static-x86_64: Process 584 attached [pid 583] <... prctl resumed>) = 0 [pid 582] <... write resumed>) = 4 [pid 356] <... close resumed>) = 0 [pid 585] set_robust_list(0x5555574d4660, 24 [pid 584] set_robust_list(0x5555574d4660, 24 [pid 583] setpgid(0, 0 [pid 582] close(3 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 585] <... set_robust_list resumed>) = 0 [pid 584] <... set_robust_list resumed>) = 0 [pid 583] <... setpgid resumed>) = 0 [pid 582] <... close resumed>) = 0 [pid 581] ioctl(5, LOOP_SET_FD, 4 [pid 585] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 584] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 583] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 582] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 581] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 586 [pid 585] <... prctl resumed>) = 0 [pid 584] <... prctl resumed>) = 0 [pid 583] <... openat resumed>) = 3 [pid 582] <... openat resumed>) = 3 [pid 581] close(5 [pid 585] setpgid(0, 0 [pid 584] setpgid(0, 0 [pid 583] write(3, "1000", 4 [pid 582] ioctl(3, BLKSECDISCARD, [0, 0] [pid 581] <... close resumed>) = 0 ./strace-static-x86_64: Process 586 attached [pid 585] <... setpgid resumed>) = 0 [pid 584] <... setpgid resumed>) = 0 [pid 583] <... write resumed>) = 4 [pid 582] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 581] close(4 [pid 585] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 584] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 583] close(3 [pid 582] memfd_create("syzkaller", 0 [pid 584] <... openat resumed>) = 3 [pid 583] <... close resumed>) = 0 [pid 584] write(3, "1000", 4 [pid 583] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 581] <... close resumed>) = 0 [pid 586] set_robust_list(0x5555574d4660, 24 [pid 585] <... openat resumed>) = 3 [pid 584] <... write resumed>) = 4 [pid 583] <... openat resumed>) = 3 [pid 582] <... memfd_create resumed>) = 4 [pid 581] exit_group(0 [pid 586] <... set_robust_list resumed>) = 0 [pid 585] write(3, "1000", 4 [pid 584] close(3 [pid 583] ioctl(3, BLKSECDISCARD, [0, 0] [pid 582] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 581] <... exit_group resumed>) = ? [pid 586] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 585] <... write resumed>) = 4 [pid 584] <... close resumed>) = 0 [pid 583] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 582] <... mmap resumed>) = 0x7f1bc18a3000 [pid 585] close(3 [pid 584] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 583] memfd_create("syzkaller", 0 [pid 581] +++ exited with 0 +++ [pid 584] <... openat resumed>) = 3 [pid 583] <... memfd_create resumed>) = 4 [pid 584] ioctl(3, BLKSECDISCARD, [0, 0] [pid 583] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=581, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 584] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 583] <... mmap resumed>) = 0x7f1bc18a3000 [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 586] <... prctl resumed>) = 0 [pid 585] <... close resumed>) = 0 [pid 584] memfd_create("syzkaller", 0 [pid 583] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 582] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 359] <... restart_syscall resumed>) = 0 [pid 586] setpgid(0, 0 [pid 585] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 584] <... memfd_create resumed>) = 4 [pid 583] <... write resumed>) = 262144 [pid 582] <... write resumed>) = 262144 [pid 586] <... setpgid resumed>) = 0 [pid 585] <... openat resumed>) = 3 [pid 584] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 583] munmap(0x7f1bc18a3000, 138412032 [pid 582] munmap(0x7f1bc18a3000, 138412032 [pid 586] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 585] ioctl(3, BLKSECDISCARD, [0, 0] [pid 584] <... mmap resumed>) = 0x7f1bc18a3000 [pid 583] <... munmap resumed>) = 0 [pid 582] <... munmap resumed>) = 0 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 586] <... openat resumed>) = 3 [pid 585] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 584] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 583] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 582] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 359] <... openat resumed>) = 3 [pid 586] write(3, "1000", 4 [pid 585] memfd_create("syzkaller", 0 [pid 584] <... write resumed>) = 262144 [pid 583] <... openat resumed>) = 5 [pid 582] <... openat resumed>) = 5 [pid 359] ioctl(3, LOOP_CLR_FD [pid 586] <... write resumed>) = 4 [pid 585] <... memfd_create resumed>) = 4 [pid 584] munmap(0x7f1bc18a3000, 138412032 [pid 583] ioctl(5, LOOP_SET_FD, 4 [pid 582] ioctl(5, LOOP_SET_FD, 4 [pid 359] <... ioctl resumed>) = 0 [pid 586] close(3 [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 582] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] close(3 [pid 586] <... close resumed>) = 0 [pid 585] <... mmap resumed>) = 0x7f1bc18a3000 [pid 584] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 583] ioctl(5, LOOP_CLR_FD [pid 582] ioctl(5, LOOP_CLR_FD [pid 359] <... close resumed>) = 0 [pid 586] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 584] <... openat resumed>) = 5 [pid 583] <... ioctl resumed>) = 0 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 584] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 587 [pid 584] ioctl(5, LOOP_CLR_FD [pid 585] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 584] <... ioctl resumed>) = 0 [pid 582] <... ioctl resumed>) = 0 [pid 586] <... openat resumed>) = 3 [pid 583] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 583] close(5) = 0 [pid 583] close(4 [pid 586] ioctl(3, BLKSECDISCARD, [0, 0] [pid 585] <... write resumed>) = 262144 [pid 583] <... close resumed>) = 0 [pid 586] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 585] munmap(0x7f1bc18a3000, 138412032 [pid 584] ioctl(5, LOOP_SET_FD, 4 [pid 583] exit_group(0 [pid 586] memfd_create("syzkaller", 0 [pid 584] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 583] <... exit_group resumed>) = ? [pid 585] <... munmap resumed>) = 0 [pid 586] <... memfd_create resumed>) = 4 [pid 585] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 584] close(5 [pid 583] +++ exited with 0 +++ [pid 586] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 585] <... openat resumed>) = 5 [pid 584] <... close resumed>) = 0 [pid 582] ioctl(5, LOOP_SET_FD, 4 [pid 586] <... mmap resumed>) = 0x7f1bc18a3000 [pid 585] ioctl(5, LOOP_SET_FD, 4 [pid 584] close(4 [pid 582] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=583, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 584] <... close resumed>) = 0 [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 584] exit_group(0 [pid 358] <... restart_syscall resumed>) = 0 [pid 584] <... exit_group resumed>) = ? [pid 586] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 585] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 584] +++ exited with 0 +++ [pid 582] close(5 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=584, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] <... openat resumed>) = 3 [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 358] ioctl(3, LOOP_CLR_FD) = 0 [pid 358] close(3) = 0 [pid 586] <... write resumed>) = 262144 [pid 585] ioctl(5, LOOP_CLR_FD [pid 582] <... close resumed>) = 0 [pid 361] <... restart_syscall resumed>) = 0 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 587 attached [pid 586] munmap(0x7f1bc18a3000, 138412032 [pid 585] <... ioctl resumed>) = 0 [pid 582] close(4 [pid 587] set_robust_list(0x5555574d4660, 24 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 588 [pid 587] <... set_robust_list resumed>) = 0 [pid 586] <... munmap resumed>) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 587] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 361] <... openat resumed>) = 3 [pid 587] <... prctl resumed>) = 0 [pid 361] ioctl(3, LOOP_CLR_FD [pid 587] setpgid(0, 0 [pid 586] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 582] <... close resumed>) = 0 [pid 361] <... ioctl resumed>) = 0 [pid 587] <... setpgid resumed>) = 0 [pid 586] <... openat resumed>) = 5 [pid 582] exit_group(0 [pid 361] close(3 [pid 587] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 586] ioctl(5, LOOP_SET_FD, 4 [pid 582] <... exit_group resumed>) = ? [pid 361] <... close resumed>) = 0 [pid 587] <... openat resumed>) = 3 [pid 586] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 587] write(3, "1000", 4 [pid 586] ioctl(5, LOOP_CLR_FD [pid 585] ioctl(5, LOOP_SET_FD, 4 [pid 582] +++ exited with 0 +++ [pid 587] <... write resumed>) = 4 [pid 586] <... ioctl resumed>) = 0 [pid 585] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 589 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=582, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 587] close(3 [pid 585] close(5 [pid 587] <... close resumed>) = 0 [pid 587] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 585] <... close resumed>) = 0 [pid 587] <... openat resumed>) = 3 [pid 585] close(4 [pid 587] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 587] memfd_create("syzkaller", 0) = 4 [pid 587] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 585] <... close resumed>) = 0 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR./strace-static-x86_64: Process 588 attached [pid 587] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 586] ioctl(5, LOOP_SET_FD, 4 [pid 585] exit_group(0 [pid 360] <... openat resumed>) = 3 [pid 588] set_robust_list(0x5555574d4660, 24 [pid 586] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 585] <... exit_group resumed>) = ? [pid 360] ioctl(3, LOOP_CLR_FD [pid 588] <... set_robust_list resumed>) = 0 [pid 586] close(5 [pid 588] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 586] <... close resumed>) = 0 [pid 585] +++ exited with 0 +++ [pid 360] <... ioctl resumed>) = 0 [pid 588] <... prctl resumed>) = 0 [pid 586] close(4 [pid 360] close(3 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=585, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 589 attached [pid 587] <... write resumed>) = 262144 [pid 357] <... restart_syscall resumed>) = 0 [pid 589] set_robust_list(0x5555574d4660, 24 [pid 587] munmap(0x7f1bc18a3000, 138412032 [pid 589] <... set_robust_list resumed>) = 0 [pid 588] setpgid(0, 0 [pid 587] <... munmap resumed>) = 0 [pid 586] <... close resumed>) = 0 [pid 360] <... close resumed>) = 0 [pid 589] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 588] <... setpgid resumed>) = 0 [pid 587] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 586] exit_group(0 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 589] <... prctl resumed>) = 0 [pid 588] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 587] <... openat resumed>) = 5 [pid 586] <... exit_group resumed>) = ? [pid 357] <... openat resumed>) = 3 [pid 589] setpgid(0, 0 [pid 587] ioctl(5, LOOP_SET_FD, 4 [pid 357] ioctl(3, LOOP_CLR_FD [pid 589] <... setpgid resumed>) = 0 [pid 587] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 357] <... ioctl resumed>) = 0 [pid 589] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 587] ioctl(5, LOOP_CLR_FD [pid 586] +++ exited with 0 +++ [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 590 [pid 357] close(3 [pid 589] <... openat resumed>) = 3 [pid 588] <... openat resumed>) = 3 [pid 587] <... ioctl resumed>) = 0 [pid 357] <... close resumed>) = 0 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=586, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 589] write(3, "1000", 4 [pid 588] write(3, "1000", 4 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 589] <... write resumed>) = 4 [pid 588] <... write resumed>) = 4 [pid 589] close(3 [pid 588] close(3 [pid 587] ioctl(5, LOOP_SET_FD, 4 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 591 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 589] <... close resumed>) = 0 [pid 588] <... close resumed>) = 0 [pid 587] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] <... openat resumed>) = 3 [pid 589] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 588] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 587] close(5 [pid 356] ioctl(3, LOOP_CLR_FD [pid 589] <... openat resumed>) = 3 [pid 588] <... openat resumed>) = 3 [pid 587] <... close resumed>) = 0 [pid 356] <... ioctl resumed>) = 0 [pid 589] ioctl(3, BLKSECDISCARD, [0, 0] [pid 588] ioctl(3, BLKSECDISCARD, [0, 0] [pid 587] close(4 [pid 356] close(3./strace-static-x86_64: Process 591 attached [pid 589] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 588] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 587] <... close resumed>) = 0 [pid 356] <... close resumed>) = 0 [pid 591] set_robust_list(0x5555574d4660, 24 [pid 589] memfd_create("syzkaller", 0 [pid 588] memfd_create("syzkaller", 0 [pid 587] exit_group(0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 591] <... set_robust_list resumed>) = 0 [pid 589] <... memfd_create resumed>) = 4 [pid 588] <... memfd_create resumed>) = 4 [pid 587] <... exit_group resumed>) = ? [pid 591] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 589] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 588] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 587] +++ exited with 0 +++ [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 592 [pid 591] <... prctl resumed>) = 0 [pid 589] <... mmap resumed>) = 0x7f1bc18a3000 [pid 588] <... mmap resumed>) = 0x7f1bc18a3000 ./strace-static-x86_64: Process 592 attached [pid 591] setpgid(0, 0 [pid 589] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=587, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 589] <... write resumed>) = 262144 [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 592] set_robust_list(0x5555574d4660, 24 [pid 591] <... setpgid resumed>) = 0 [pid 589] munmap(0x7f1bc18a3000, 138412032 [pid 588] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 359] <... restart_syscall resumed>) = 0 [pid 592] <... set_robust_list resumed>) = 0 [pid 591] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 589] <... munmap resumed>) = 0 [pid 589] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 5 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR./strace-static-x86_64: Process 590 attached [pid 592] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 589] ioctl(5, LOOP_SET_FD, 4 [pid 588] <... write resumed>) = 262144 [pid 359] <... openat resumed>) = 3 [pid 592] <... prctl resumed>) = 0 [pid 591] <... openat resumed>) = 3 [pid 590] set_robust_list(0x5555574d4660, 24 [pid 589] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 588] munmap(0x7f1bc18a3000, 138412032 [pid 359] ioctl(3, LOOP_CLR_FD [pid 592] setpgid(0, 0 [pid 591] write(3, "1000", 4 [pid 590] <... set_robust_list resumed>) = 0 [pid 589] ioctl(5, LOOP_CLR_FD [pid 588] <... munmap resumed>) = 0 [pid 359] <... ioctl resumed>) = 0 [pid 592] <... setpgid resumed>) = 0 [pid 591] <... write resumed>) = 4 [pid 590] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 589] <... ioctl resumed>) = 0 [pid 588] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 359] close(3 [pid 592] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 591] close(3 [pid 590] <... prctl resumed>) = 0 [pid 588] <... openat resumed>) = 5 [pid 359] <... close resumed>) = 0 [pid 592] <... openat resumed>) = 3 [pid 591] <... close resumed>) = 0 [pid 590] setpgid(0, 0 [pid 588] ioctl(5, LOOP_SET_FD, 4 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 592] write(3, "1000", 4 [pid 591] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 590] <... setpgid resumed>) = 0 [pid 588] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 592] <... write resumed>) = 4 [pid 591] <... openat resumed>) = 3 [pid 590] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 589] ioctl(5, LOOP_SET_FD, 4 [pid 588] ioctl(5, LOOP_CLR_FD [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 593 [pid 592] close(3 [pid 590] <... openat resumed>) = 3 [pid 589] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 591] ioctl(3, BLKSECDISCARD, [0, 0] [pid 592] <... close resumed>) = 0 [pid 590] write(3, "1000", 4 [pid 589] close(5 [pid 591] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 588] <... ioctl resumed>) = 0 [pid 592] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 591] memfd_create("syzkaller", 0 [pid 590] <... write resumed>) = 4 [pid 589] <... close resumed>) = 0 [pid 592] <... openat resumed>) = 3 [pid 591] <... memfd_create resumed>) = 4 [pid 590] close(3 [pid 589] close(4./strace-static-x86_64: Process 593 attached [pid 592] ioctl(3, BLKSECDISCARD, [0, 0] [pid 591] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 590] <... close resumed>) = 0 [pid 589] <... close resumed>) = 0 [pid 593] set_robust_list(0x5555574d4660, 24 [pid 592] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 591] <... mmap resumed>) = 0x7f1bc18a3000 [pid 590] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 589] exit_group(0 [pid 588] ioctl(5, LOOP_SET_FD, 4 [pid 592] memfd_create("syzkaller", 0 [pid 590] <... openat resumed>) = 3 [pid 589] <... exit_group resumed>) = ? [pid 590] ioctl(3, BLKSECDISCARD, [0, 0] [pid 589] +++ exited with 0 +++ [pid 591] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 590] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 588] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 592] <... memfd_create resumed>) = 4 [pid 590] memfd_create("syzkaller", 0 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=589, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 590] <... memfd_create resumed>) = 4 [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 590] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 361] <... restart_syscall resumed>) = 0 [pid 590] <... mmap resumed>) = 0x7f1bc18a3000 [pid 593] <... set_robust_list resumed>) = 0 [pid 592] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 591] <... write resumed>) = 262144 [pid 590] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 588] close(5 [pid 593] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 592] <... mmap resumed>) = 0x7f1bc18a3000 [pid 591] munmap(0x7f1bc18a3000, 138412032 [pid 590] <... write resumed>) = 262144 [pid 588] <... close resumed>) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 593] <... prctl resumed>) = 0 [pid 590] munmap(0x7f1bc18a3000, 138412032 [pid 361] <... openat resumed>) = 3 [pid 590] <... munmap resumed>) = 0 [pid 361] ioctl(3, LOOP_CLR_FD [pid 590] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 361] <... ioctl resumed>) = 0 [pid 590] <... openat resumed>) = 5 [pid 361] close(3 [pid 590] ioctl(5, LOOP_SET_FD, 4 [pid 361] <... close resumed>) = 0 [pid 592] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 590] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 591] <... munmap resumed>) = 0 [pid 590] ioctl(5, LOOP_CLR_FD [pid 588] close(4 [pid 590] <... ioctl resumed>) = 0 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 594 ./strace-static-x86_64: Process 594 attached [pid 594] set_robust_list(0x5555574d4660, 24) = 0 [pid 593] setpgid(0, 0 [pid 591] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 588] <... close resumed>) = 0 [pid 593] <... setpgid resumed>) = 0 [pid 591] <... openat resumed>) = 5 [pid 591] ioctl(5, LOOP_SET_FD, 4 [pid 588] exit_group(0 [pid 593] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 592] <... write resumed>) = 262144 [pid 591] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 590] ioctl(5, LOOP_SET_FD, 4 [pid 588] <... exit_group resumed>) = ? [pid 593] <... openat resumed>) = 3 [pid 592] munmap(0x7f1bc18a3000, 138412032 [pid 591] ioctl(5, LOOP_CLR_FD [pid 590] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 590] close(5) = 0 [pid 590] close(4 [pid 588] +++ exited with 0 +++ [pid 593] write(3, "1000", 4 [pid 591] <... ioctl resumed>) = 0 [pid 593] <... write resumed>) = 4 [pid 592] <... munmap resumed>) = 0 [pid 590] <... close resumed>) = 0 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=588, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 593] close(3 [pid 592] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 590] exit_group(0 [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 594] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 593] <... close resumed>) = 0 [pid 592] <... openat resumed>) = 5 [pid 590] <... exit_group resumed>) = ? [pid 358] <... restart_syscall resumed>) = 0 [pid 594] <... prctl resumed>) = 0 [pid 593] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 592] ioctl(5, LOOP_SET_FD, 4 [pid 591] ioctl(5, LOOP_SET_FD, 4 [pid 590] +++ exited with 0 +++ [pid 594] setpgid(0, 0 [pid 593] <... openat resumed>) = 3 [pid 592] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 591] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=590, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 594] <... setpgid resumed>) = 0 [pid 593] ioctl(3, BLKSECDISCARD, [0, 0] [pid 592] ioctl(5, LOOP_CLR_FD [pid 591] close(5 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 594] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 593] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 592] <... ioctl resumed>) = 0 [pid 591] <... close resumed>) = 0 [pid 358] <... openat resumed>) = 3 [pid 594] <... openat resumed>) = 3 [pid 593] memfd_create("syzkaller", 0 [pid 591] close(4 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 358] ioctl(3, LOOP_CLR_FD [pid 594] write(3, "1000", 4 [pid 593] <... memfd_create resumed>) = 4 [pid 358] <... ioctl resumed>) = 0 [pid 594] <... write resumed>) = 4 [pid 358] close(3 [pid 594] close(3 [pid 593] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 591] <... close resumed>) = 0 [pid 360] <... openat resumed>) = 3 [pid 358] <... close resumed>) = 0 [pid 594] <... close resumed>) = 0 [pid 593] <... mmap resumed>) = 0x7f1bc18a3000 [pid 592] ioctl(5, LOOP_SET_FD, 4 [pid 591] exit_group(0 [pid 360] ioctl(3, LOOP_CLR_FD [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 594] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 595 [pid 594] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 594] memfd_create("syzkaller", 0 [pid 593] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 592] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] <... ioctl resumed>) = 0 [pid 594] <... memfd_create resumed>) = 4 [pid 592] close(5 [pid 591] <... exit_group resumed>) = ? [pid 360] close(3 [pid 594] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 594] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 593] <... write resumed>) = 262144 [pid 592] <... close resumed>) = 0 [pid 591] +++ exited with 0 +++ [pid 360] <... close resumed>) = 0 ./strace-static-x86_64: Process 595 attached [pid 594] <... write resumed>) = 262144 [pid 593] munmap(0x7f1bc18a3000, 138412032 [pid 592] close(4 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=591, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 593] <... munmap resumed>) = 0 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 594] munmap(0x7f1bc18a3000, 138412032 [pid 357] <... openat resumed>) = 3 [pid 594] <... munmap resumed>) = 0 [pid 592] <... close resumed>) = 0 [pid 357] ioctl(3, LOOP_CLR_FD) = 0 [pid 357] close(3) = 0 [pid 595] set_robust_list(0x5555574d4660, 24 [pid 594] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 593] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 592] exit_group(0 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 595] <... set_robust_list resumed>) = 0 [pid 594] <... openat resumed>) = 5 [pid 593] <... openat resumed>) = 5 [pid 592] <... exit_group resumed>) = ? [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 596 [pid 594] ioctl(5, LOOP_SET_FD, 4 [pid 593] ioctl(5, LOOP_SET_FD, 4 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 597 [pid 594] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 594] ioctl(5, LOOP_CLR_FD [pid 592] +++ exited with 0 +++ [pid 595] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 593] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 595] <... prctl resumed>) = 0 [pid 594] <... ioctl resumed>) = 0 [pid 593] ioctl(5, LOOP_CLR_FD [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=592, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 595] setpgid(0, 0 [pid 593] <... ioctl resumed>) = 0 [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 595] <... setpgid resumed>) = 0 [pid 356] <... restart_syscall resumed>) = 0 [pid 595] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 594] ioctl(5, LOOP_SET_FD, 4 [pid 356] ioctl(3, LOOP_CLR_FD [pid 595] <... openat resumed>) = 3 [pid 594] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 593] ioctl(5, LOOP_SET_FD, 4 [pid 356] <... ioctl resumed>) = 0 [pid 595] write(3, "1000", 4 [pid 594] close(5 [pid 593] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] close(3./strace-static-x86_64: Process 597 attached [pid 595] <... write resumed>) = 4 [pid 594] <... close resumed>) = 0 [pid 593] close(5 [pid 356] <... close resumed>) = 0 [pid 597] set_robust_list(0x5555574d4660, 24 [pid 595] close(3 [pid 594] close(4 [pid 593] <... close resumed>) = 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 596 attached [pid 597] <... set_robust_list resumed>) = 0 [pid 595] <... close resumed>) = 0 [pid 594] <... close resumed>) = 0 [pid 593] close(4 [pid 596] set_robust_list(0x5555574d4660, 24 [pid 595] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 594] exit_group(0 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 598 [pid 596] <... set_robust_list resumed>) = 0 [pid 594] <... exit_group resumed>) = ? [pid 597] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 596] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 595] <... openat resumed>) = 3 [pid 594] +++ exited with 0 +++ [pid 593] <... close resumed>) = 0 [pid 597] <... prctl resumed>) = 0 [pid 596] <... prctl resumed>) = 0 [pid 595] ioctl(3, BLKSECDISCARD, [0, 0] [pid 593] exit_group(0 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=594, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 597] setpgid(0, 0 [pid 596] setpgid(0, 0 [pid 595] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 593] <... exit_group resumed>) = ? [pid 596] <... setpgid resumed>) = 0 [pid 595] memfd_create("syzkaller", 0 [pid 596] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 597] <... setpgid resumed>) = 0 [pid 596] <... openat resumed>) = 3 [pid 595] <... memfd_create resumed>) = 4 [pid 593] +++ exited with 0 +++ [pid 361] <... openat resumed>) = 3 [pid 597] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 596] write(3, "1000", 4 [pid 595] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 361] ioctl(3, LOOP_CLR_FD [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=593, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 597] <... openat resumed>) = 3 [pid 596] <... write resumed>) = 4 [pid 595] <... mmap resumed>) = 0x7f1bc18a3000 [pid 361] <... ioctl resumed>) = 0 [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 597] write(3, "1000", 4 [pid 596] close(3 [pid 361] close(3 [pid 359] <... restart_syscall resumed>) = 0 [pid 596] <... close resumed>) = 0 [pid 361] <... close resumed>) = 0 [pid 596] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 596] <... openat resumed>) = 3 [pid 595] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 596] ioctl(3, BLKSECDISCARD, [0, 0] [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 599 [pid 359] <... openat resumed>) = 3 [pid 596] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 359] ioctl(3, LOOP_CLR_FD [pid 596] memfd_create("syzkaller", 0 [pid 595] <... write resumed>) = 262144 [pid 597] <... write resumed>) = 4 [pid 359] <... ioctl resumed>) = 0 [pid 597] close(3 [pid 596] <... memfd_create resumed>) = 4 [pid 595] munmap(0x7f1bc18a3000, 138412032 [pid 359] close(3 [pid 597] <... close resumed>) = 0 [pid 596] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 359] <... close resumed>) = 0 ./strace-static-x86_64: Process 598 attached [pid 597] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 596] <... mmap resumed>) = 0x7f1bc18a3000 [pid 595] <... munmap resumed>) = 0 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 598] set_robust_list(0x5555574d4660, 24 [pid 597] <... openat resumed>) = 3 [pid 596] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 595] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 598] <... set_robust_list resumed>) = 0 [pid 597] ioctl(3, BLKSECDISCARD, [0, 0] [pid 596] <... write resumed>) = 262144 [pid 595] <... openat resumed>) = 5 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 600 [pid 598] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 597] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 596] munmap(0x7f1bc18a3000, 138412032 [pid 595] ioctl(5, LOOP_SET_FD, 4 [pid 598] <... prctl resumed>) = 0 [pid 597] memfd_create("syzkaller", 0 [pid 596] <... munmap resumed>) = 0 [pid 595] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 600 attached [pid 598] setpgid(0, 0 [pid 597] <... memfd_create resumed>) = 4 [pid 596] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 595] ioctl(5, LOOP_CLR_FD [pid 600] set_robust_list(0x5555574d4660, 24 [pid 598] <... setpgid resumed>) = 0 [pid 597] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 596] <... openat resumed>) = 5 [pid 595] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 599 attached [pid 600] <... set_robust_list resumed>) = 0 [pid 598] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 597] <... mmap resumed>) = 0x7f1bc18a3000 [pid 596] ioctl(5, LOOP_SET_FD, 4 [pid 600] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 599] set_robust_list(0x5555574d4660, 24 [pid 598] <... openat resumed>) = 3 [pid 599] <... set_robust_list resumed>) = 0 [pid 596] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 599] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 596] ioctl(5, LOOP_CLR_FD [pid 599] <... prctl resumed>) = 0 [pid 596] <... ioctl resumed>) = 0 [pid 599] setpgid(0, 0) = 0 [pid 600] <... prctl resumed>) = 0 [pid 599] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 598] write(3, "1000", 4 [pid 597] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 598] <... write resumed>) = 4 [pid 599] <... openat resumed>) = 3 [pid 599] write(3, "1000", 4) = 4 [pid 596] ioctl(5, LOOP_SET_FD, 4 [pid 599] close(3 [pid 598] close(3 [pid 596] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 599] <... close resumed>) = 0 [pid 598] <... close resumed>) = 0 [pid 597] <... write resumed>) = 262144 [pid 600] setpgid(0, 0 [pid 596] close(5 [pid 595] ioctl(5, LOOP_SET_FD, 4 [pid 600] <... setpgid resumed>) = 0 [pid 599] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 598] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 597] munmap(0x7f1bc18a3000, 138412032 [pid 596] <... close resumed>) = 0 [pid 595] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 599] <... openat resumed>) = 3 [pid 598] <... openat resumed>) = 3 [pid 597] <... munmap resumed>) = 0 [pid 596] close(4 [pid 595] close(5 [pid 600] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 599] ioctl(3, BLKSECDISCARD, [0, 0] [pid 598] ioctl(3, BLKSECDISCARD, [0, 0] [pid 597] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 596] <... close resumed>) = 0 [pid 595] <... close resumed>) = 0 [pid 600] <... openat resumed>) = 3 [pid 599] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 598] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 597] <... openat resumed>) = 5 [pid 596] exit_group(0 [pid 595] close(4 [pid 600] write(3, "1000", 4 [pid 599] memfd_create("syzkaller", 0 [pid 598] memfd_create("syzkaller", 0 [pid 597] ioctl(5, LOOP_SET_FD, 4 [pid 596] <... exit_group resumed>) = ? [pid 600] <... write resumed>) = 4 [pid 599] <... memfd_create resumed>) = 4 [pid 598] <... memfd_create resumed>) = 4 [pid 597] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 596] +++ exited with 0 +++ [pid 595] <... close resumed>) = 0 [pid 600] close(3 [pid 599] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 598] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 597] ioctl(5, LOOP_CLR_FD [pid 595] exit_group(0 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=596, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 600] <... close resumed>) = 0 [pid 599] <... mmap resumed>) = 0x7f1bc18a3000 [pid 598] <... mmap resumed>) = 0x7f1bc18a3000 [pid 597] <... ioctl resumed>) = 0 [pid 595] <... exit_group resumed>) = ? [pid 600] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 599] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144) = 262144 [pid 599] munmap(0x7f1bc18a3000, 138412032) = 0 [pid 598] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 599] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 595] +++ exited with 0 +++ [pid 600] <... openat resumed>) = 3 [pid 599] <... openat resumed>) = 5 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=595, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 599] ioctl(5, LOOP_SET_FD, 4 [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 599] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 599] ioctl(5, LOOP_CLR_FD) = 0 [pid 358] <... restart_syscall resumed>) = 0 [pid 600] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 598] <... write resumed>) = 262144 [pid 597] ioctl(5, LOOP_SET_FD, 4 [pid 600] memfd_create("syzkaller", 0 [pid 598] munmap(0x7f1bc18a3000, 138412032 [pid 597] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 600] <... memfd_create resumed>) = 4 [pid 597] close(5 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 358] <... openat resumed>) = 3 [pid 600] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 599] ioctl(5, LOOP_SET_FD, 4 [pid 598] <... munmap resumed>) = 0 [pid 597] <... close resumed>) = 0 [pid 360] <... openat resumed>) = 3 [pid 358] ioctl(3, LOOP_CLR_FD [pid 600] <... mmap resumed>) = 0x7f1bc18a3000 [pid 599] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 598] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 597] close(4 [pid 360] ioctl(3, LOOP_CLR_FD [pid 358] <... ioctl resumed>) = 0 [pid 599] close(5 [pid 358] close(3 [pid 599] <... close resumed>) = 0 [pid 358] <... close resumed>) = 0 [pid 599] close(4 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 600] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 599] <... close resumed>) = 0 [pid 598] <... openat resumed>) = 5 [pid 599] exit_group(0 [pid 597] <... close resumed>) = 0 [pid 360] <... ioctl resumed>) = 0 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 601 [pid 599] <... exit_group resumed>) = ? [pid 598] ioctl(5, LOOP_SET_FD, 4 [pid 597] exit_group(0 [pid 360] close(3 [pid 600] <... write resumed>) = 262144 [pid 599] +++ exited with 0 +++ [pid 598] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 597] <... exit_group resumed>) = ? [pid 360] <... close resumed>) = 0 [pid 600] munmap(0x7f1bc18a3000, 138412032 [pid 598] ioctl(5, LOOP_CLR_FD [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=599, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 361] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 601 attached [pid 597] +++ exited with 0 +++ [pid 598] <... ioctl resumed>) = 0 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=597, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 601] set_robust_list(0x5555574d4660, 24 [pid 600] <... munmap resumed>) = 0 [pid 361] <... restart_syscall resumed>) = 0 [pid 357] <... restart_syscall resumed>) = 0 [pid 600] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 600] <... openat resumed>) = 5 [pid 361] <... openat resumed>) = 3 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 602 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 600] ioctl(5, LOOP_SET_FD, 4 [pid 361] ioctl(3, LOOP_CLR_FD [pid 357] <... openat resumed>) = 3 [pid 600] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] <... ioctl resumed>) = 0 [pid 357] ioctl(3, LOOP_CLR_FD [pid 600] ioctl(5, LOOP_CLR_FD [pid 598] ioctl(5, LOOP_SET_FD, 4 [pid 361] close(3 [pid 357] <... ioctl resumed>) = 0 [pid 600] <... ioctl resumed>) = 0 [pid 598] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] <... close resumed>) = 0 [pid 357] close(3 [pid 598] close(5 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 357] <... close resumed>) = 0 [pid 598] <... close resumed>) = 0 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 601] <... set_robust_list resumed>) = 0 [pid 598] close(4 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 603 [pid 601] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 600] ioctl(5, LOOP_SET_FD, 4 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 604 [pid 601] <... prctl resumed>) = 0 [pid 601] setpgid(0, 0 [pid 598] <... close resumed>) = 0 [pid 601] <... setpgid resumed>) = 0 [pid 600] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 598] exit_group(0 [pid 601] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 600] close(5 [pid 598] <... exit_group resumed>) = ? [pid 601] <... openat resumed>) = 3 [pid 600] <... close resumed>) = 0 [pid 601] write(3, "1000", 4) = 4 [pid 598] +++ exited with 0 +++ [pid 601] close(3 [pid 600] close(4 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=598, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 601] <... close resumed>) = 0 [pid 601] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 601] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 600] <... close resumed>) = 0 [pid 601] memfd_create("syzkaller", 0) = 4 [pid 600] exit_group(0 [pid 601] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 600] <... exit_group resumed>) = ? [pid 601] <... mmap resumed>) = 0x7f1bc18a3000 ./strace-static-x86_64: Process 602 attached [pid 601] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 600] +++ exited with 0 +++ [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 603 attached [pid 602] set_robust_list(0x5555574d4660, 24 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=600, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] <... openat resumed>) = 3 [pid 603] set_robust_list(0x5555574d4660, 24 [pid 602] <... set_robust_list resumed>) = 0 [pid 356] ioctl(3, LOOP_CLR_FD [pid 602] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 356] <... ioctl resumed>) = 0 [pid 603] <... set_robust_list resumed>) = 0 [pid 602] <... prctl resumed>) = 0 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 356] close(3 [pid 603] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 602] setpgid(0, 0 [pid 601] <... write resumed>) = 262144 [pid 359] <... openat resumed>) = 3 [pid 356] <... close resumed>) = 0 [pid 603] <... prctl resumed>) = 0 [pid 602] <... setpgid resumed>) = 0 [pid 359] ioctl(3, LOOP_CLR_FD [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 604 attached [pid 603] setpgid(0, 0 [pid 602] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 359] <... ioctl resumed>) = 0 [pid 604] set_robust_list(0x5555574d4660, 24 [pid 603] <... setpgid resumed>) = 0 [pid 602] <... openat resumed>) = 3 [pid 359] close(3 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 605 [pid 604] <... set_robust_list resumed>) = 0 [pid 603] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 602] write(3, "1000", 4 [pid 359] <... close resumed>) = 0 [pid 604] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 603] <... openat resumed>) = 3 [pid 602] <... write resumed>) = 4 [pid 601] munmap(0x7f1bc18a3000, 138412032 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 604] <... prctl resumed>) = 0 [pid 603] write(3, "1000", 4 [pid 602] close(3 [pid 601] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 605 attached [pid 604] setpgid(0, 0 [pid 603] <... write resumed>) = 4 [pid 602] <... close resumed>) = 0 [pid 601] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 606 [pid 605] set_robust_list(0x5555574d4660, 24 [pid 604] <... setpgid resumed>) = 0 [pid 603] close(3 [pid 602] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 601] <... openat resumed>) = 5 [pid 605] <... set_robust_list resumed>) = 0 [pid 604] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 603] <... close resumed>) = 0 [pid 602] <... openat resumed>) = 3 [pid 601] ioctl(5, LOOP_SET_FD, 4 [pid 605] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 604] <... openat resumed>) = 3 [pid 603] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 602] ioctl(3, BLKSECDISCARD, [0, 0] [pid 601] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 605] <... prctl resumed>) = 0 [pid 604] write(3, "1000", 4 [pid 603] <... openat resumed>) = 3 [pid 602] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 601] ioctl(5, LOOP_CLR_FD [pid 605] setpgid(0, 0 [pid 604] <... write resumed>) = 4 [pid 603] ioctl(3, BLKSECDISCARD, [0, 0] [pid 602] memfd_create("syzkaller", 0 [pid 601] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 606 attached [pid 605] <... setpgid resumed>) = 0 [pid 604] close(3 [pid 603] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 602] <... memfd_create resumed>) = 4 [pid 606] set_robust_list(0x5555574d4660, 24 [pid 605] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 604] <... close resumed>) = 0 [pid 603] memfd_create("syzkaller", 0 [pid 602] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 606] <... set_robust_list resumed>) = 0 [pid 605] <... openat resumed>) = 3 [pid 604] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 603] <... memfd_create resumed>) = 4 [pid 602] <... mmap resumed>) = 0x7f1bc18a3000 [pid 606] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 605] write(3, "1000", 4 [pid 604] <... openat resumed>) = 3 [pid 603] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 604] ioctl(3, BLKSECDISCARD, [0, 0] [pid 601] ioctl(5, LOOP_SET_FD, 4 [pid 604] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 601] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 604] memfd_create("syzkaller", 0 [pid 601] close(5 [pid 604] <... memfd_create resumed>) = 4 [pid 601] <... close resumed>) = 0 [pid 606] <... prctl resumed>) = 0 [pid 605] <... write resumed>) = 4 [pid 604] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 603] <... mmap resumed>) = 0x7f1bc18a3000 [pid 602] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 601] close(4 [pid 606] setpgid(0, 0 [pid 605] close(3 [pid 604] <... mmap resumed>) = 0x7f1bc18a3000 [pid 603] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 602] <... write resumed>) = 262144 [pid 601] <... close resumed>) = 0 [pid 606] <... setpgid resumed>) = 0 [pid 605] <... close resumed>) = 0 [pid 603] <... write resumed>) = 262144 [pid 602] munmap(0x7f1bc18a3000, 138412032 [pid 606] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 605] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 604] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 603] munmap(0x7f1bc18a3000, 138412032 [pid 602] <... munmap resumed>) = 0 [pid 601] exit_group(0 [pid 606] <... openat resumed>) = 3 [pid 605] <... openat resumed>) = 3 [pid 603] <... munmap resumed>) = 0 [pid 602] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 601] <... exit_group resumed>) = ? [pid 606] write(3, "1000", 4 [pid 605] ioctl(3, BLKSECDISCARD, [0, 0] [pid 603] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 602] <... openat resumed>) = 5 [pid 606] <... write resumed>) = 4 [pid 605] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 603] <... openat resumed>) = 5 [pid 602] ioctl(5, LOOP_SET_FD, 4 [pid 601] +++ exited with 0 +++ [pid 606] close(3 [pid 605] memfd_create("syzkaller", 0 [pid 603] ioctl(5, LOOP_SET_FD, 4 [pid 602] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=601, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 606] <... close resumed>) = 0 [pid 605] <... memfd_create resumed>) = 4 [pid 603] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 602] ioctl(5, LOOP_CLR_FD [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 606] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 605] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 604] <... write resumed>) = 262144 [pid 603] ioctl(5, LOOP_CLR_FD [pid 602] <... ioctl resumed>) = 0 [pid 606] <... openat resumed>) = 3 [pid 605] <... mmap resumed>) = 0x7f1bc18a3000 [pid 604] munmap(0x7f1bc18a3000, 138412032 [pid 603] <... ioctl resumed>) = 0 [pid 358] <... restart_syscall resumed>) = 0 [pid 606] ioctl(3, BLKSECDISCARD, [0, 0] [pid 605] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 606] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 605] <... write resumed>) = 262144 [pid 604] <... munmap resumed>) = 0 [pid 606] memfd_create("syzkaller", 0 [pid 605] munmap(0x7f1bc18a3000, 138412032 [pid 602] ioctl(5, LOOP_SET_FD, 4 [pid 606] <... memfd_create resumed>) = 4 [pid 605] <... munmap resumed>) = 0 [pid 604] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 602] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 606] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 605] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 604] <... openat resumed>) = 5 [pid 603] ioctl(5, LOOP_SET_FD, 4 [pid 602] close(5 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 606] <... mmap resumed>) = 0x7f1bc18a3000 [pid 605] <... openat resumed>) = 5 [pid 604] ioctl(5, LOOP_SET_FD, 4 [pid 603] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 602] <... close resumed>) = 0 [pid 606] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 605] ioctl(5, LOOP_SET_FD, 4 [pid 604] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 603] close(5 [pid 602] close(4 [pid 358] <... openat resumed>) = 3 [pid 606] <... write resumed>) = 262144 [pid 605] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 604] ioctl(5, LOOP_CLR_FD [pid 603] <... close resumed>) = 0 [pid 602] <... close resumed>) = 0 [pid 606] munmap(0x7f1bc18a3000, 138412032 [pid 605] ioctl(5, LOOP_CLR_FD [pid 603] close(4 [pid 602] exit_group(0 [pid 606] <... munmap resumed>) = 0 [pid 605] <... ioctl resumed>) = 0 [pid 604] <... ioctl resumed>) = 0 [pid 603] <... close resumed>) = 0 [pid 602] <... exit_group resumed>) = ? [pid 358] ioctl(3, LOOP_CLR_FD [pid 606] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 603] exit_group(0 [pid 602] +++ exited with 0 +++ [pid 606] <... openat resumed>) = 5 [pid 603] <... exit_group resumed>) = ? [pid 606] ioctl(5, LOOP_SET_FD, 4 [pid 603] +++ exited with 0 +++ [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=602, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] <... ioctl resumed>) = 0 [pid 606] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 605] ioctl(5, LOOP_SET_FD, 4 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 606] ioctl(5, LOOP_CLR_FD [pid 605] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] <... openat resumed>) = 3 [pid 606] <... ioctl resumed>) = 0 [pid 605] close(5 [pid 360] ioctl(3, LOOP_CLR_FD [pid 605] <... close resumed>) = 0 [pid 360] <... ioctl resumed>) = 0 [pid 605] close(4 [pid 360] close(3 [pid 605] <... close resumed>) = 0 [pid 360] <... close resumed>) = 0 [pid 605] exit_group(0 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 606] ioctl(5, LOOP_SET_FD, 4 [pid 605] <... exit_group resumed>) = ? [pid 606] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 605] +++ exited with 0 +++ [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 607 [pid 606] close(5) = 0 [pid 606] close(4) = 0 [pid 606] exit_group(0) = ? [pid 606] +++ exited with 0 +++ ./strace-static-x86_64: Process 607 attached [pid 607] set_robust_list(0x5555574d4660, 24) = 0 [pid 607] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 607] setpgid(0, 0) = 0 [pid 607] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 607] write(3, "1000", 4) = 4 [pid 607] close(3) = 0 [pid 607] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 607] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=603, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 358] close(3 [pid 604] ioctl(5, LOOP_SET_FD, 4 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=606, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] <... close resumed>) = 0 [pid 607] memfd_create("syzkaller", 0) = 4 [pid 607] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 604] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 604] close(5 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=605, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 604] <... close resumed>) = 0 [pid 356] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 604] close(4 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 608 [pid 359] <... openat resumed>) = 3 [pid 604] <... close resumed>) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 359] ioctl(3, LOOP_CLR_FD [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 604] exit_group(0 [pid 361] <... openat resumed>) = 3 [pid 356] <... openat resumed>) = 3 [pid 359] <... ioctl resumed>) = 0 [pid 604] <... exit_group resumed>) = ? [pid 361] ioctl(3, LOOP_CLR_FD [pid 356] ioctl(3, LOOP_CLR_FD [pid 359] close(3 [pid 361] <... ioctl resumed>) = 0 [pid 356] <... ioctl resumed>) = 0 [pid 607] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 604] +++ exited with 0 +++ [pid 361] close(3 [pid 359] <... close resumed>) = 0 [pid 361] <... close resumed>) = 0 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=604, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] close(3 [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] <... close resumed>) = 0 [pid 357] <... restart_syscall resumed>) = 0 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 610 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 609 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 608 attached [pid 608] set_robust_list(0x5555574d4660, 24) = 0 [pid 608] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 608] setpgid(0, 0 [pid 357] <... openat resumed>) = 3 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 611 [pid 608] <... setpgid resumed>) = 0 [pid 357] ioctl(3, LOOP_CLR_FD) = 0 [pid 357] close(3) = 0 [pid 608] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 611 attached ./strace-static-x86_64: Process 610 attached ./strace-static-x86_64: Process 609 attached [pid 607] <... write resumed>) = 262144 [pid 608] <... openat resumed>) = 3 [pid 608] write(3, "1000", 4) = 4 [pid 608] close(3) = 0 [pid 608] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 607] munmap(0x7f1bc18a3000, 138412032 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 612 [pid 608] <... openat resumed>) = 3 [pid 608] ioctl(3, BLKSECDISCARD, [0, 0] [pid 607] <... munmap resumed>) = 0 [pid 608] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 608] memfd_create("syzkaller", 0) = 4 [pid 607] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 5 [pid 608] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 607] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 607] ioctl(5, LOOP_CLR_FD) = 0 [pid 610] set_robust_list(0x5555574d4660, 24) = 0 ./strace-static-x86_64: Process 612 attached [pid 612] set_robust_list(0x5555574d4660, 24 [pid 607] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 607] close(5) = 0 [pid 607] close(4 [pid 612] <... set_robust_list resumed>) = 0 [pid 612] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 610] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 607] <... close resumed>) = 0 [pid 611] set_robust_list(0x5555574d4660, 24 [pid 610] <... prctl resumed>) = 0 [pid 611] <... set_robust_list resumed>) = 0 [pid 610] setpgid(0, 0 [pid 612] <... prctl resumed>) = 0 [pid 611] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 610] <... setpgid resumed>) = 0 [pid 612] setpgid(0, 0 [pid 611] <... prctl resumed>) = 0 [pid 610] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 607] exit_group(0 [pid 612] <... setpgid resumed>) = 0 [pid 611] setpgid(0, 0 [pid 610] <... openat resumed>) = 3 [pid 608] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 607] <... exit_group resumed>) = ? [pid 612] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 611] <... setpgid resumed>) = 0 [pid 610] write(3, "1000", 4 [pid 607] +++ exited with 0 +++ [pid 611] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 610] <... write resumed>) = 4 [pid 612] <... openat resumed>) = 3 [pid 611] <... openat resumed>) = 3 [pid 610] close(3 [pid 608] <... write resumed>) = 262144 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=607, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 611] write(3, "1000", 4 [pid 610] <... close resumed>) = 0 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 612] write(3, "1000", 4 [pid 611] <... write resumed>) = 4 [pid 610] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 360] <... openat resumed>) = 3 [pid 611] close(3 [pid 610] <... openat resumed>) = 3 [pid 360] ioctl(3, LOOP_CLR_FD [pid 612] <... write resumed>) = 4 [pid 611] <... close resumed>) = 0 [pid 610] ioctl(3, BLKSECDISCARD, [0, 0] [pid 360] <... ioctl resumed>) = 0 [pid 611] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 610] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 360] close(3 [pid 612] close(3 [pid 611] <... openat resumed>) = 3 [pid 610] memfd_create("syzkaller", 0 [pid 360] <... close resumed>) = 0 [pid 612] <... close resumed>) = 0 [pid 611] ioctl(3, BLKSECDISCARD, [0, 0] [pid 610] <... memfd_create resumed>) = 4 [pid 608] munmap(0x7f1bc18a3000, 138412032 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 612] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 611] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 610] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 608] <... munmap resumed>) = 0 [pid 611] memfd_create("syzkaller", 0 [pid 610] <... mmap resumed>) = 0x7f1bc18a3000 [pid 608] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 613 ./strace-static-x86_64: Process 613 attached [pid 612] <... openat resumed>) = 3 [pid 611] <... memfd_create resumed>) = 4 [pid 610] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 609] set_robust_list(0x5555574d4660, 24 [pid 608] <... openat resumed>) = 5 [pid 612] ioctl(3, BLKSECDISCARD, [0, 0] [pid 611] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 610] <... write resumed>) = 262144 [pid 609] <... set_robust_list resumed>) = 0 [pid 608] ioctl(5, LOOP_SET_FD, 4 [pid 613] set_robust_list(0x5555574d4660, 24 [pid 611] <... mmap resumed>) = 0x7f1bc18a3000 [pid 609] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 608] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 613] <... set_robust_list resumed>) = 0 [pid 612] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 611] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 609] <... prctl resumed>) = 0 [pid 608] ioctl(5, LOOP_CLR_FD [pid 613] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 612] memfd_create("syzkaller", 0 [pid 611] <... write resumed>) = 262144 [pid 610] munmap(0x7f1bc18a3000, 138412032 [pid 609] setpgid(0, 0 [pid 608] <... ioctl resumed>) = 0 [pid 611] munmap(0x7f1bc18a3000, 138412032 [pid 609] <... setpgid resumed>) = 0 [pid 613] <... prctl resumed>) = 0 [pid 612] <... memfd_create resumed>) = 4 [pid 611] <... munmap resumed>) = 0 [pid 610] <... munmap resumed>) = 0 [pid 609] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 613] setpgid(0, 0 [pid 612] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 611] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 610] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 609] <... openat resumed>) = 3 [pid 611] <... openat resumed>) = 5 [pid 609] write(3, "1000", 4 [pid 613] <... setpgid resumed>) = 0 [pid 612] <... mmap resumed>) = 0x7f1bc18a3000 [pid 611] ioctl(5, LOOP_SET_FD, 4 [pid 610] <... openat resumed>) = 5 [pid 609] <... write resumed>) = 4 [pid 608] ioctl(5, LOOP_SET_FD, 4 [pid 611] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 609] close(3 [pid 608] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 611] ioctl(5, LOOP_CLR_FD [pid 609] <... close resumed>) = 0 [pid 608] close(5 [pid 611] <... ioctl resumed>) = 0 [pid 609] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 608] <... close resumed>) = 0 [pid 609] <... openat resumed>) = 3 [pid 608] close(4 [pid 609] ioctl(3, BLKSECDISCARD, [0, 0] [pid 608] <... close resumed>) = 0 [pid 609] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 608] exit_group(0 [pid 612] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 609] memfd_create("syzkaller", 0 [pid 608] <... exit_group resumed>) = ? [pid 609] <... memfd_create resumed>) = 4 [pid 608] +++ exited with 0 +++ [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=608, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 613] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 611] ioctl(5, LOOP_SET_FD, 4 [pid 609] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 611] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 609] <... mmap resumed>) = 0x7f1bc18a3000 [pid 613] <... openat resumed>) = 3 [pid 612] <... write resumed>) = 262144 [pid 611] close(5 [pid 610] ioctl(5, LOOP_SET_FD, 4 [pid 609] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 613] write(3, "1000", 4 [pid 612] munmap(0x7f1bc18a3000, 138412032 [pid 611] <... close resumed>) = 0 [pid 610] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 609] <... write resumed>) = 262144 [pid 611] close(4 [pid 609] munmap(0x7f1bc18a3000, 138412032 [pid 613] <... write resumed>) = 4 [pid 612] <... munmap resumed>) = 0 [pid 611] <... close resumed>) = 0 [pid 610] ioctl(5, LOOP_CLR_FD [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 613] close(3 [pid 612] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 611] exit_group(0 [pid 610] <... ioctl resumed>) = 0 [pid 609] <... munmap resumed>) = 0 [pid 611] <... exit_group resumed>) = ? [pid 609] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 613] <... close resumed>) = 0 [pid 612] <... openat resumed>) = 5 [pid 611] +++ exited with 0 +++ [pid 609] <... openat resumed>) = 5 [pid 358] <... openat resumed>) = 3 [pid 609] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 609] ioctl(5, LOOP_CLR_FD) = 0 [pid 613] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 612] ioctl(5, LOOP_SET_FD, 4 [pid 358] ioctl(3, LOOP_CLR_FD [pid 613] <... openat resumed>) = 3 [pid 612] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] <... ioctl resumed>) = 0 [pid 613] ioctl(3, BLKSECDISCARD, [0, 0] [pid 612] ioctl(5, LOOP_CLR_FD [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=611, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 609] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 609] close(5) = 0 [pid 358] close(3 [pid 612] <... ioctl resumed>) = 0 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 613] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 609] close(4 [pid 613] memfd_create("syzkaller", 0 [pid 610] ioctl(5, LOOP_SET_FD, 4 [pid 609] <... close resumed>) = 0 [pid 358] <... close resumed>) = 0 [pid 356] <... openat resumed>) = 3 [pid 609] exit_group(0) = ? [pid 613] <... memfd_create resumed>) = 4 [pid 610] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 609] +++ exited with 0 +++ [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] ioctl(3, LOOP_CLR_FD [pid 613] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 610] close(5 [pid 356] <... ioctl resumed>) = 0 [pid 612] ioctl(5, LOOP_SET_FD, 4 [pid 610] <... close resumed>) = 0 [pid 613] <... mmap resumed>) = 0x7f1bc18a3000 [pid 612] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] close(3 [pid 610] close(4 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=609, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 614 attached [pid 614] set_robust_list(0x5555574d4660, 24) = 0 [pid 614] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 614] setpgid(0, 0) = 0 [pid 614] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 614] write(3, "1000", 4) = 4 [pid 613] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 614] close(3 [pid 612] close(5 [pid 356] <... close resumed>) = 0 [pid 614] <... close resumed>) = 0 [pid 614] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 614] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 614] memfd_create("syzkaller", 0) = 4 [pid 614] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 610] <... close resumed>) = 0 [pid 612] <... close resumed>) = 0 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 612] close(4 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 614 [pid 612] <... close resumed>) = 0 [pid 359] <... openat resumed>) = 3 [pid 359] ioctl(3, LOOP_CLR_FD [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 615 [pid 612] exit_group(0 [pid 359] <... ioctl resumed>) = 0 [pid 359] close(3 [pid 610] exit_group(0 [pid 359] <... close resumed>) = 0 [pid 612] <... exit_group resumed>) = ? [pid 610] <... exit_group resumed>) = ? [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 614] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 612] +++ exited with 0 +++ ./strace-static-x86_64: Process 615 attached [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 616 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=612, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 615] set_robust_list(0x5555574d4660, 24) = 0 [pid 615] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 615] setpgid(0, 0 [pid 610] +++ exited with 0 +++ [pid 615] <... setpgid resumed>) = 0 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=610, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 615] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 357] <... openat resumed>) = 3 [pid 361] <... openat resumed>) = 3 [pid 357] ioctl(3, LOOP_CLR_FD [pid 615] <... openat resumed>) = 3 [pid 615] write(3, "1000", 4) = 4 [pid 615] close(3) = 0 [pid 615] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 361] ioctl(3, LOOP_CLR_FD [pid 357] <... ioctl resumed>) = 0 [pid 361] <... ioctl resumed>) = 0 [pid 615] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 615] memfd_create("syzkaller", 0 [pid 361] close(3 [pid 357] close(3 [pid 613] <... write resumed>) = 262144 [pid 615] <... memfd_create resumed>) = 4 [pid 361] <... close resumed>) = 0 [pid 357] <... close resumed>) = 0 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 614] <... write resumed>) = 262144 [pid 615] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 614] munmap(0x7f1bc18a3000, 138412032 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 617 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 618 [pid 613] munmap(0x7f1bc18a3000, 138412032 [pid 614] <... munmap resumed>) = 0 [pid 614] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 5 [pid 614] ioctl(5, LOOP_SET_FD, 4 [pid 613] <... munmap resumed>) = 0 [pid 614] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 614] ioctl(5, LOOP_CLR_FD) = 0 [pid 613] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 5 [pid 613] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 613] ioctl(5, LOOP_CLR_FD) = 0 [pid 614] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 614] close(5) = 0 [pid 614] close(4 [pid 613] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 613] close(5) = 0 [pid 613] close(4./strace-static-x86_64: Process 616 attached [pid 616] set_robust_list(0x5555574d4660, 24) = 0 [pid 616] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 616] setpgid(0, 0) = 0 [pid 616] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 613] <... close resumed>) = 0 [pid 613] exit_group(0) = ? [pid 616] write(3, "1000", 4 [pid 614] <... close resumed>) = 0 [pid 613] +++ exited with 0 +++ [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=613, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 360] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 616] <... write resumed>) = 4 [pid 360] ioctl(3, LOOP_CLR_FD [pid 616] close(3 [pid 360] <... ioctl resumed>) = 0 [pid 616] <... close resumed>) = 0 [pid 615] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 360] close(3 [pid 616] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 360] <... close resumed>) = 0 ./strace-static-x86_64: Process 618 attached ./strace-static-x86_64: Process 617 attached [pid 616] <... openat resumed>) = 3 [pid 615] <... write resumed>) = 262144 [pid 614] exit_group(0 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 618] set_robust_list(0x5555574d4660, 24 [pid 617] set_robust_list(0x5555574d4660, 24 [pid 616] ioctl(3, BLKSECDISCARD, [0, 0] [pid 614] <... exit_group resumed>) = ? [pid 618] <... set_robust_list resumed>) = 0 [pid 617] <... set_robust_list resumed>) = 0 [pid 616] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 614] +++ exited with 0 +++ [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 619 [pid 616] memfd_create("syzkaller", 0 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=614, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 616] <... memfd_create resumed>) = 4 [pid 618] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 617] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 616] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 618] <... prctl resumed>) = 0 [pid 617] <... prctl resumed>) = 0 [pid 616] <... mmap resumed>) = 0x7f1bc18a3000 [pid 618] setpgid(0, 0 [pid 617] setpgid(0, 0 [pid 616] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 615] munmap(0x7f1bc18a3000, 138412032 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR./strace-static-x86_64: Process 619 attached [pid 618] <... setpgid resumed>) = 0 [pid 617] <... setpgid resumed>) = 0 [pid 615] <... munmap resumed>) = 0 [pid 619] set_robust_list(0x5555574d4660, 24 [pid 618] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 617] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 616] <... write resumed>) = 262144 [pid 615] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 358] <... openat resumed>) = 3 [pid 619] <... set_robust_list resumed>) = 0 [pid 618] <... openat resumed>) = 3 [pid 615] <... openat resumed>) = 5 [pid 617] <... openat resumed>) = 3 [pid 358] ioctl(3, LOOP_CLR_FD [pid 618] write(3, "1000", 4 [pid 617] write(3, "1000", 4 [pid 615] ioctl(5, LOOP_SET_FD, 4 [pid 358] <... ioctl resumed>) = 0 [pid 358] close(3 [pid 618] <... write resumed>) = 4 [pid 617] <... write resumed>) = 4 [pid 358] <... close resumed>) = 0 [pid 618] close(3 [pid 617] close(3 [pid 615] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 615] ioctl(5, LOOP_CLR_FD [pid 616] munmap(0x7f1bc18a3000, 138412032 [pid 615] <... ioctl resumed>) = 0 [pid 616] <... munmap resumed>) = 0 [pid 618] <... close resumed>) = 0 [pid 617] <... close resumed>) = 0 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 620 [pid 618] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 617] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 616] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 618] <... openat resumed>) = 3 [pid 617] <... openat resumed>) = 3 [pid 616] <... openat resumed>) = 5 [pid 618] ioctl(3, BLKSECDISCARD, [0, 0] [pid 617] ioctl(3, BLKSECDISCARD, [0, 0] [pid 618] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 617] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 616] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 616] ioctl(5, LOOP_CLR_FD) = 0 [pid 615] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 615] close(5) = 0 [pid 618] memfd_create("syzkaller", 0 [pid 615] close(4 [pid 619] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 618] <... memfd_create resumed>) = 4 [pid 617] memfd_create("syzkaller", 0 [pid 615] <... close resumed>) = 0 [pid 618] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 617] <... memfd_create resumed>) = 4 [pid 616] ioctl(5, LOOP_SET_FD, 4 [pid 615] exit_group(0 [pid 618] <... mmap resumed>) = 0x7f1bc18a3000 [pid 617] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 616] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 615] <... exit_group resumed>) = ? [pid 619] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 620 attached [pid 617] <... mmap resumed>) = 0x7f1bc18a3000 [pid 616] close(5 [pid 615] +++ exited with 0 +++ [pid 620] set_robust_list(0x5555574d4660, 24 [pid 616] <... close resumed>) = 0 [pid 620] <... set_robust_list resumed>) = 0 [pid 616] close(4 [pid 620] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 616] <... close resumed>) = 0 [pid 620] <... prctl resumed>) = 0 [pid 616] exit_group(0 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=615, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 620] setpgid(0, 0 [pid 616] <... exit_group resumed>) = ? [pid 620] <... setpgid resumed>) = 0 [pid 618] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 616] +++ exited with 0 +++ [pid 356] <... restart_syscall resumed>) = 0 [pid 617] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=616, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 620] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 620] write(3, "1000", 4 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 620] <... write resumed>) = 4 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 356] <... openat resumed>) = 3 [pid 620] close(3 [pid 359] <... openat resumed>) = 3 [pid 356] ioctl(3, LOOP_CLR_FD [pid 359] ioctl(3, LOOP_CLR_FD [pid 356] <... ioctl resumed>) = 0 [pid 359] <... ioctl resumed>) = 0 [pid 356] close(3 [pid 359] close(3 [pid 620] <... close resumed>) = 0 [pid 356] <... close resumed>) = 0 [pid 359] <... close resumed>) = 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 620] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 620] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 620] memfd_create("syzkaller", 0) = 4 [pid 620] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 620] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 618] <... write resumed>) = 262144 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 621 [pid 620] <... write resumed>) = 262144 [pid 619] setpgid(0, 0 [pid 618] munmap(0x7f1bc18a3000, 138412032 [pid 617] <... write resumed>) = 262144 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 622 [pid 620] munmap(0x7f1bc18a3000, 138412032) = 0 [pid 618] <... munmap resumed>) = 0 [pid 617] munmap(0x7f1bc18a3000, 138412032./strace-static-x86_64: Process 621 attached [pid 621] set_robust_list(0x5555574d4660, 24) = 0 [pid 621] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 620] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 5 [pid 620] ioctl(5, LOOP_SET_FD, 4 [pid 617] <... munmap resumed>) = 0 [pid 619] <... setpgid resumed>) = 0 [pid 618] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 621] <... prctl resumed>) = 0 ./strace-static-x86_64: Process 622 attached [pid 621] setpgid(0, 0 [pid 620] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 622] set_robust_list(0x5555574d4660, 24 [pid 621] <... setpgid resumed>) = 0 [pid 620] ioctl(5, LOOP_CLR_FD [pid 622] <... set_robust_list resumed>) = 0 [pid 621] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 620] <... ioctl resumed>) = 0 [pid 622] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 621] <... openat resumed>) = 3 [pid 619] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 618] <... openat resumed>) = 5 [pid 617] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 622] <... prctl resumed>) = 0 [pid 621] write(3, "1000", 4 [pid 618] ioctl(5, LOOP_SET_FD, 4 [pid 617] <... openat resumed>) = 5 [pid 622] setpgid(0, 0 [pid 621] <... write resumed>) = 4 [pid 619] <... openat resumed>) = 3 [pid 618] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 622] <... setpgid resumed>) = 0 [pid 621] close(3 [pid 619] write(3, "1000", 4 [pid 618] ioctl(5, LOOP_CLR_FD [pid 617] ioctl(5, LOOP_SET_FD, 4 [pid 622] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 621] <... close resumed>) = 0 [pid 619] <... write resumed>) = 4 [pid 618] <... ioctl resumed>) = 0 [pid 617] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 619] close(3 [pid 617] ioctl(5, LOOP_CLR_FD [pid 619] <... close resumed>) = 0 [pid 622] <... openat resumed>) = 3 [pid 621] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 619] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 617] <... ioctl resumed>) = 0 [pid 622] write(3, "1000", 4 [pid 621] <... openat resumed>) = 3 [pid 622] <... write resumed>) = 4 [pid 621] ioctl(3, BLKSECDISCARD, [0, 0] [pid 620] ioctl(5, LOOP_SET_FD, 4 [pid 619] <... openat resumed>) = 3 [pid 622] close(3 [pid 621] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 620] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 619] ioctl(3, BLKSECDISCARD, [0, 0] [pid 622] <... close resumed>) = 0 [pid 621] memfd_create("syzkaller", 0 [pid 620] close(5 [pid 619] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 622] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 621] <... memfd_create resumed>) = 4 [pid 620] <... close resumed>) = 0 [pid 619] memfd_create("syzkaller", 0 [pid 618] ioctl(5, LOOP_SET_FD, 4 [pid 619] <... memfd_create resumed>) = 4 [pid 618] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 617] ioctl(5, LOOP_SET_FD, 4 [pid 619] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 618] close(5 [pid 617] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 619] <... mmap resumed>) = 0x7f1bc18a3000 [pid 618] <... close resumed>) = 0 [pid 617] close(5 [pid 619] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 618] close(4 [pid 617] <... close resumed>) = 0 [pid 619] <... write resumed>) = 262144 [pid 618] <... close resumed>) = 0 [pid 617] close(4 [pid 619] munmap(0x7f1bc18a3000, 138412032 [pid 618] exit_group(0 [pid 617] <... close resumed>) = 0 [pid 620] close(4 [pid 619] <... munmap resumed>) = 0 [pid 618] <... exit_group resumed>) = ? [pid 617] exit_group(0 [pid 622] <... openat resumed>) = 3 [pid 621] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 620] <... close resumed>) = 0 [pid 619] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 618] +++ exited with 0 +++ [pid 617] <... exit_group resumed>) = ? [pid 622] ioctl(3, BLKSECDISCARD, [0, 0] [pid 621] <... mmap resumed>) = 0x7f1bc18a3000 [pid 620] exit_group(0 [pid 619] <... openat resumed>) = 5 [pid 617] +++ exited with 0 +++ [pid 357] --- 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] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 619] ioctl(5, LOOP_SET_FD, 4 [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 622] memfd_create("syzkaller", 0 [pid 620] <... exit_group resumed>) = ? [pid 619] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=617, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 357] <... restart_syscall resumed>) = 0 [pid 619] ioctl(5, LOOP_CLR_FD [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 619] <... ioctl resumed>) = 0 [pid 361] <... openat resumed>) = 3 [pid 622] <... memfd_create resumed>) = 4 [pid 361] ioctl(3, LOOP_CLR_FD [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 622] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 361] <... ioctl resumed>) = 0 [pid 357] <... openat resumed>) = 3 [pid 620] +++ exited with 0 +++ [pid 622] <... mmap resumed>) = 0x7f1bc18a3000 [pid 361] close(3 [pid 357] ioctl(3, LOOP_CLR_FD [pid 361] <... close resumed>) = 0 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=620, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] <... ioctl resumed>) = 0 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 357] close(3 [pid 619] ioctl(5, LOOP_SET_FD, 4 [pid 358] <... restart_syscall resumed>) = 0 [pid 357] <... close resumed>) = 0 [pid 619] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 623 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 622] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 621] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 619] close(5) = 0 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 624 [pid 619] close(4 [pid 358] <... openat resumed>) = 3 [pid 621] <... write resumed>) = 262144 [pid 619] <... close resumed>) = 0 [pid 358] ioctl(3, LOOP_CLR_FD [pid 619] exit_group(0 [pid 358] <... ioctl resumed>) = 0 [pid 622] <... write resumed>) = 262144 [pid 621] munmap(0x7f1bc18a3000, 138412032 [pid 619] <... exit_group resumed>) = ? [pid 358] close(3 [pid 622] munmap(0x7f1bc18a3000, 138412032 [pid 621] <... munmap resumed>) = 0 [pid 619] +++ exited with 0 +++ [pid 358] <... close resumed>) = 0 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 622] <... munmap resumed>) = 0 [pid 621] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 360] --- 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] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 621] <... openat resumed>) = 5 [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 625 [pid 622] <... openat resumed>) = 5 [pid 621] ioctl(5, LOOP_SET_FD, 4 [pid 360] <... restart_syscall resumed>) = 0 [pid 622] ioctl(5, LOOP_SET_FD, 4 [pid 621] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 622] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 621] ioctl(5, LOOP_CLR_FD [pid 622] ioctl(5, LOOP_CLR_FD [pid 621] <... ioctl resumed>) = 0 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 622] <... ioctl resumed>) = 0 [pid 360] <... openat resumed>) = 3 [pid 360] ioctl(3, LOOP_CLR_FD) = 0 [pid 360] close(3./strace-static-x86_64: Process 623 attached ) = 0 [pid 623] set_robust_list(0x5555574d4660, 24 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 624 attached [pid 623] <... set_robust_list resumed>) = 0 [pid 621] ioctl(5, LOOP_SET_FD, 4 [pid 623] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 624] set_robust_list(0x5555574d4660, 24 [pid 623] <... prctl resumed>) = 0 [pid 621] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 626 [pid 624] <... set_robust_list resumed>) = 0 [pid 623] setpgid(0, 0 [pid 622] ioctl(5, LOOP_SET_FD, 4 [pid 621] close(5 [pid 624] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 623] <... setpgid resumed>) = 0 [pid 622] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 621] <... close resumed>) = 0 ./strace-static-x86_64: Process 625 attached [pid 624] <... prctl resumed>) = 0 [pid 623] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 622] close(5 [pid 621] close(4 [pid 623] <... openat resumed>) = 3 [pid 622] <... close resumed>) = 0 [pid 625] set_robust_list(0x5555574d4660, 24 [pid 624] setpgid(0, 0 [pid 623] write(3, "1000", 4 [pid 622] close(4 [pid 621] <... close resumed>) = 0 [pid 623] <... write resumed>) = 4 [pid 623] close(3) = 0 [pid 623] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 622] <... close resumed>) = 0 [pid 625] <... set_robust_list resumed>) = 0 [pid 624] <... setpgid resumed>) = 0 [pid 623] <... openat resumed>) = 3 [pid 622] exit_group(0 [pid 621] exit_group(0 [pid 624] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 623] ioctl(3, BLKSECDISCARD, [0, 0] [pid 622] <... exit_group resumed>) = ? [pid 621] <... exit_group resumed>) = ? [pid 625] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 623] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 623] memfd_create("syzkaller", 0 [pid 622] +++ exited with 0 +++ [pid 623] <... memfd_create resumed>) = 4 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=622, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 623] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 621] +++ exited with 0 +++ [pid 625] <... prctl resumed>) = 0 [pid 624] <... openat resumed>) = 3 [pid 623] <... mmap resumed>) = 0x7f1bc18a3000 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=621, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 625] setpgid(0, 0 [pid 624] write(3, "1000", 4 [pid 623] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 625] <... setpgid resumed>) = 0 [pid 624] <... write resumed>) = 4 [pid 623] <... write resumed>) = 262144 [pid 356] <... restart_syscall resumed>) = 0 [pid 625] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 624] close(3./strace-static-x86_64: Process 626 attached [pid 625] <... openat resumed>) = 3 [pid 624] <... close resumed>) = 0 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 626] set_robust_list(0x5555574d4660, 24 [pid 625] write(3, "1000", 4 [pid 624] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 359] <... openat resumed>) = 3 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 626] <... set_robust_list resumed>) = 0 [pid 625] <... write resumed>) = 4 [pid 624] <... openat resumed>) = 3 [pid 623] munmap(0x7f1bc18a3000, 138412032 [pid 359] ioctl(3, LOOP_CLR_FD [pid 356] <... openat resumed>) = 3 [pid 626] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 625] close(3 [pid 624] ioctl(3, BLKSECDISCARD, [0, 0] [pid 623] <... munmap resumed>) = 0 [pid 359] <... ioctl resumed>) = 0 [pid 356] ioctl(3, LOOP_CLR_FD [pid 626] <... prctl resumed>) = 0 [pid 625] <... close resumed>) = 0 [pid 624] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 623] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 359] close(3 [pid 356] <... ioctl resumed>) = 0 [pid 626] setpgid(0, 0 [pid 625] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 624] memfd_create("syzkaller", 0 [pid 623] <... openat resumed>) = 5 [pid 359] <... close resumed>) = 0 [pid 356] close(3 [pid 626] <... setpgid resumed>) = 0 [pid 625] <... openat resumed>) = 3 [pid 624] <... memfd_create resumed>) = 4 [pid 623] ioctl(5, LOOP_SET_FD, 4 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] <... close resumed>) = 0 [pid 626] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 625] ioctl(3, BLKSECDISCARD, [0, 0] [pid 624] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 623] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 626] <... openat resumed>) = 3 [pid 625] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 624] <... mmap resumed>) = 0x7f1bc18a3000 [pid 623] ioctl(5, LOOP_CLR_FD [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 627 [pid 626] write(3, "1000", 4 [pid 625] memfd_create("syzkaller", 0 [pid 623] <... ioctl resumed>) = 0 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 628 [pid 626] <... write resumed>) = 4 [pid 626] close(3) = 0 [pid 626] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 626] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 626] memfd_create("syzkaller", 0 [pid 624] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 626] <... memfd_create resumed>) = 4 [pid 625] <... memfd_create resumed>) = 4 [pid 626] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 623] ioctl(5, LOOP_SET_FD, 4 [pid 626] <... mmap resumed>) = 0x7f1bc18a3000 [pid 623] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 626] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 625] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 624] <... write resumed>) = 262144 [pid 623] close(5./strace-static-x86_64: Process 627 attached [pid 626] <... write resumed>) = 262144 [pid 625] <... mmap resumed>) = 0x7f1bc18a3000 [pid 624] munmap(0x7f1bc18a3000, 138412032 [pid 623] <... close resumed>) = 0 [pid 626] munmap(0x7f1bc18a3000, 138412032 [pid 623] close(4 [pid 626] <... munmap resumed>) = 0 [pid 623] <... close resumed>) = 0 [pid 627] set_robust_list(0x5555574d4660, 24 [pid 626] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 625] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 624] <... munmap resumed>) = 0 [pid 623] exit_group(0 [pid 626] <... openat resumed>) = 5 [pid 623] <... exit_group resumed>) = ? [pid 627] <... set_robust_list resumed>) = 0 [pid 626] ioctl(5, LOOP_SET_FD, 4 [pid 625] <... write resumed>) = 262144 [pid 624] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 623] +++ exited with 0 +++ [pid 627] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 626] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 625] munmap(0x7f1bc18a3000, 138412032 [pid 624] <... openat resumed>) = 5 [pid 627] <... prctl resumed>) = 0 [pid 626] ioctl(5, LOOP_CLR_FD [pid 624] ioctl(5, LOOP_SET_FD, 4 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=623, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 628 attached [pid 627] setpgid(0, 0 [pid 626] <... ioctl resumed>) = 0 [pid 625] <... munmap resumed>) = 0 [pid 624] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 628] set_robust_list(0x5555574d4660, 24 [pid 627] <... setpgid resumed>) = 0 [pid 625] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 624] ioctl(5, LOOP_CLR_FD [pid 361] <... restart_syscall resumed>) = 0 [pid 628] <... set_robust_list resumed>) = 0 [pid 627] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 625] <... openat resumed>) = 5 [pid 624] <... ioctl resumed>) = 0 [pid 628] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 627] <... openat resumed>) = 3 [pid 625] ioctl(5, LOOP_SET_FD, 4 [pid 628] <... prctl resumed>) = 0 [pid 627] write(3, "1000", 4 [pid 625] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 628] setpgid(0, 0 [pid 627] <... write resumed>) = 4 [pid 626] ioctl(5, LOOP_SET_FD, 4 [pid 625] ioctl(5, LOOP_CLR_FD [pid 361] <... openat resumed>) = 3 [pid 628] <... setpgid resumed>) = 0 [pid 627] close(3 [pid 626] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 625] <... ioctl resumed>) = 0 [pid 361] ioctl(3, LOOP_CLR_FD [pid 628] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 627] <... close resumed>) = 0 [pid 626] close(5 [pid 624] ioctl(5, LOOP_SET_FD, 4 [pid 361] <... ioctl resumed>) = 0 [pid 628] <... openat resumed>) = 3 [pid 627] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 626] <... close resumed>) = 0 [pid 624] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] close(3 [pid 628] write(3, "1000", 4 [pid 627] <... openat resumed>) = 3 [pid 626] close(4 [pid 624] close(5 [pid 361] <... close resumed>) = 0 [pid 628] <... write resumed>) = 4 [pid 627] ioctl(3, BLKSECDISCARD, [0, 0] [pid 626] <... close resumed>) = 0 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 628] close(3 [pid 627] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 626] exit_group(0 [pid 625] ioctl(5, LOOP_SET_FD, 4 [pid 624] <... close resumed>) = 0 [pid 628] <... close resumed>) = 0 [pid 627] memfd_create("syzkaller", 0 [pid 626] <... exit_group resumed>) = ? [pid 625] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 624] close(4 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 629 [pid 628] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 627] <... memfd_create resumed>) = 4 [pid 626] +++ exited with 0 +++ [pid 625] close(5 [pid 628] <... openat resumed>) = 3 [pid 628] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 627] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 625] <... close resumed>) = 0 [pid 624] <... close resumed>) = 0 [pid 628] memfd_create("syzkaller", 0 [pid 627] <... mmap resumed>) = 0x7f1bc18a3000 [pid 625] close(4 [pid 624] exit_group(0 [pid 628] <... memfd_create resumed>) = 4 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=626, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 628] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 628] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 627] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 628] <... write resumed>) = 262144 [pid 625] <... close resumed>) = 0 [pid 624] <... exit_group resumed>) = ? [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 628] munmap(0x7f1bc18a3000, 138412032) = 0 [pid 628] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 624] +++ exited with 0 +++ [pid 628] <... openat resumed>) = 5 [pid 625] exit_group(0 [pid 360] <... openat resumed>) = 3 [pid 357] --- 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] ioctl(5, LOOP_SET_FD, 4 [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 628] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 628] ioctl(5, LOOP_CLR_FD) = 0 [pid 627] <... write resumed>) = 262144 [pid 625] <... exit_group resumed>) = ? [pid 360] ioctl(3, LOOP_CLR_FD [pid 627] munmap(0x7f1bc18a3000, 138412032 [pid 357] <... restart_syscall resumed>) = 0 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 629 attached [pid 627] <... munmap resumed>) = 0 [pid 625] +++ exited with 0 +++ [pid 360] <... ioctl resumed>) = 0 [pid 357] <... openat resumed>) = 3 [pid 629] set_robust_list(0x5555574d4660, 24 [pid 628] ioctl(5, LOOP_SET_FD, 4 [pid 627] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 360] close(3 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=625, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] ioctl(3, LOOP_CLR_FD [pid 628] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] <... close resumed>) = 0 [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 357] <... ioctl resumed>) = 0 [pid 629] <... set_robust_list resumed>) = 0 [pid 628] close(5 [pid 627] <... openat resumed>) = 5 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] <... restart_syscall resumed>) = 0 [pid 357] close(3 [pid 629] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 628] <... close resumed>) = 0 [pid 627] ioctl(5, LOOP_SET_FD, 4 [pid 357] <... close resumed>) = 0 [pid 629] <... prctl resumed>) = 0 [pid 628] close(4 [pid 627] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 629] setpgid(0, 0 [pid 628] <... close resumed>) = 0 [pid 627] ioctl(5, LOOP_CLR_FD [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 630 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 628] exit_group(0 [pid 358] <... openat resumed>) = 3 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 631 [pid 628] <... exit_group resumed>) = ? [pid 358] ioctl(3, LOOP_CLR_FD [pid 628] +++ exited with 0 +++ [pid 627] <... ioctl resumed>) = 0 [pid 358] <... ioctl resumed>) = 0 [pid 358] close(3 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=628, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] <... close resumed>) = 0 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 632 [pid 356] <... openat resumed>) = 3 [pid 356] ioctl(3, LOOP_CLR_FD) = 0 [pid 356] close(3) = 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555574d4650) = 633 ./strace-static-x86_64: Process 633 attached [pid 633] set_robust_list(0x5555574d4660, 24) = 0 [pid 633] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 633] setpgid(0, 0) = 0 [pid 633] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 629] <... setpgid resumed>) = 0 [pid 629] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 629] write(3, "1000", 4) = 4 [pid 629] close(3) = 0 [pid 629] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 627] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 632 attached [pid 629] <... openat resumed>) = 3 [pid 633] write(3, "1000", 4 [pid 632] set_robust_list(0x5555574d4660, 24 [pid 629] ioctl(3, BLKSECDISCARD, [0, 0] [pid 627] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 633] <... write resumed>) = 4 [pid 632] <... set_robust_list resumed>) = 0 [pid 629] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 627] close(5./strace-static-x86_64: Process 630 attached [pid 633] close(3 [pid 632] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 629] memfd_create("syzkaller", 0 [pid 627] <... close resumed>) = 0 [pid 633] <... close resumed>) = 0 [pid 632] <... prctl resumed>) = 0 [pid 630] set_robust_list(0x5555574d4660, 24 [pid 629] <... memfd_create resumed>) = 4 [pid 627] close(4 [pid 633] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 632] setpgid(0, 0 [pid 630] <... set_robust_list resumed>) = 0 [pid 633] <... openat resumed>) = 3 [pid 632] <... setpgid resumed>) = 0 [pid 630] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 633] ioctl(3, BLKSECDISCARD, [0, 0] [pid 632] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 630] <... prctl resumed>) = 0 [pid 629] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 627] <... close resumed>) = 0 [pid 633] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 632] <... openat resumed>) = 3 [pid 630] setpgid(0, 0 [pid 629] <... mmap resumed>) = 0x7f1bc18a3000 [pid 627] exit_group(0 [pid 633] memfd_create("syzkaller", 0 [pid 632] write(3, "1000", 4 [pid 630] <... setpgid resumed>) = 0 [pid 627] <... exit_group resumed>) = ? [pid 633] <... memfd_create resumed>) = 4 [pid 632] <... write resumed>) = 4 [pid 630] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 633] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 632] close(3 [pid 630] <... openat resumed>) = 3 [pid 633] <... mmap resumed>) = 0x7f1bc18a3000 [pid 632] <... close resumed>) = 0 [pid 630] write(3, "1000", 4 [pid 627] +++ exited with 0 +++ ./strace-static-x86_64: Process 631 attached [pid 633] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 632] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 630] <... write resumed>) = 4 [pid 629] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=627, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 633] <... write resumed>) = 262144 [pid 632] <... openat resumed>) = 3 [pid 631] set_robust_list(0x5555574d4660, 24 [pid 630] close(3 [pid 629] <... write resumed>) = 262144 [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 632] ioctl(3, BLKSECDISCARD, [0, 0] [pid 631] <... set_robust_list resumed>) = 0 [pid 630] <... close resumed>) = 0 [pid 629] munmap(0x7f1bc18a3000, 138412032 [pid 359] <... restart_syscall resumed>) = 0 [pid 632] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 630] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 629] <... munmap resumed>) = 0 [pid 633] munmap(0x7f1bc18a3000, 138412032 [pid 632] memfd_create("syzkaller", 0 [pid 631] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 630] <... openat resumed>) = 3 [pid 629] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 633] <... munmap resumed>) = 0 [pid 632] <... memfd_create resumed>) = 4 [pid 631] <... prctl resumed>) = 0 [pid 630] ioctl(3, BLKSECDISCARD, [0, 0] [pid 629] <... openat resumed>) = 5 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 633] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 632] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 631] setpgid(0, 0 [pid 630] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 629] ioctl(5, LOOP_SET_FD, 4 [pid 359] <... openat resumed>) = 3 [pid 633] <... openat resumed>) = 5 [pid 632] <... mmap resumed>) = 0x7f1bc18a3000 [pid 631] <... setpgid resumed>) = 0 [pid 630] memfd_create("syzkaller", 0 [pid 629] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] ioctl(3, LOOP_CLR_FD [pid 633] ioctl(5, LOOP_SET_FD, 4 [pid 632] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 631] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 630] <... memfd_create resumed>) = 4 [pid 629] ioctl(5, LOOP_CLR_FD [pid 359] <... ioctl resumed>) = 0 [pid 633] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 632] <... write resumed>) = 262144 [pid 631] <... openat resumed>) = 3 [pid 630] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 629] <... ioctl resumed>) = 0 [pid 359] close(3 [pid 633] ioctl(5, LOOP_CLR_FD [pid 632] munmap(0x7f1bc18a3000, 138412032 [pid 631] write(3, "1000", 4 [pid 630] <... mmap resumed>) = 0x7f1bc18a3000 [pid 359] <... close resumed>) = 0 [pid 633] <... ioctl resumed>) = 0 [pid 632] <... munmap resumed>) = 0 [pid 631] <... write resumed>) = 4 [pid 630] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 632] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 631] close(3 [pid 630] <... write resumed>) = 262144 [pid 632] <... openat resumed>) = 5 [pid 631] <... close resumed>) = 0 [pid 630] munmap(0x7f1bc18a3000, 138412032 [pid 629] ioctl(5, LOOP_SET_FD, 4 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 634 [pid 632] ioctl(5, LOOP_SET_FD, 4 [pid 631] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 630] <... munmap resumed>) = 0 [pid 629] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 633] ioctl(5, LOOP_SET_FD, 4 [pid 632] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 631] <... openat resumed>) = 3 [pid 630] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 629] close(5 [pid 633] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 632] ioctl(5, LOOP_CLR_FD [pid 631] ioctl(3, BLKSECDISCARD, [0, 0] [pid 630] <... openat resumed>) = 5 [pid 629] <... close resumed>) = 0 [pid 633] close(5 [pid 632] <... ioctl resumed>) = 0 [pid 631] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 630] ioctl(5, LOOP_SET_FD, 4 [pid 629] close(4 [pid 633] <... close resumed>) = 0 [pid 631] memfd_create("syzkaller", 0 [pid 630] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 633] close(4 [pid 630] ioctl(5, LOOP_CLR_FD [pid 633] <... close resumed>) = 0 [pid 631] <... memfd_create resumed>) = 4 [pid 630] <... ioctl resumed>) = 0 [pid 629] <... close resumed>) = 0 ./strace-static-x86_64: Process 634 attached [pid 633] exit_group(0 [pid 632] ioctl(5, LOOP_SET_FD, 4 [pid 631] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 629] exit_group(0 [pid 634] set_robust_list(0x5555574d4660, 24 [pid 633] <... exit_group resumed>) = ? [pid 632] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 631] <... mmap resumed>) = 0x7f1bc18a3000 [pid 629] <... exit_group resumed>) = ? [pid 633] +++ exited with 0 +++ [pid 632] close(5) = 0 [pid 630] ioctl(5, LOOP_SET_FD, 4 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=633, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 632] close(4 [pid 630] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 632] <... close resumed>) = 0 [pid 631] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 630] close(5 [pid 632] exit_group(0 [pid 630] <... close resumed>) = 0 [pid 629] +++ exited with 0 +++ [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 632] <... exit_group resumed>) = ? [pid 630] close(4 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=629, si_uid=0, si_status=0, si_utime=0, si_stime=2} --- [pid 356] <... openat resumed>) = 3 [pid 634] <... set_robust_list resumed>) = 0 [pid 632] +++ exited with 0 +++ [pid 631] <... write resumed>) = 262144 [pid 630] <... close resumed>) = 0 [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 356] ioctl(3, LOOP_CLR_FD [pid 634] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 631] munmap(0x7f1bc18a3000, 138412032 [pid 630] exit_group(0 [pid 361] <... restart_syscall resumed>) = 0 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=632, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] <... ioctl resumed>) = 0 [pid 634] <... prctl resumed>) = 0 [pid 631] <... munmap resumed>) = 0 [pid 630] <... exit_group resumed>) = ? [pid 356] close(3 [pid 634] setpgid(0, 0 [pid 631] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 630] +++ exited with 0 +++ [pid 356] <... close resumed>) = 0 [pid 634] <... setpgid resumed>) = 0 [pid 631] <... openat resumed>) = 5 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 634] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 631] ioctl(5, LOOP_SET_FD, 4 [pid 361] <... openat resumed>) = 3 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=630, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] <... openat resumed>) = 3 [pid 634] <... openat resumed>) = 3 [pid 631] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] ioctl(3, LOOP_CLR_FD [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 358] ioctl(3, LOOP_CLR_FD [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 635 [pid 634] write(3, "1000", 4 [pid 631] ioctl(5, LOOP_CLR_FD [pid 361] <... ioctl resumed>) = 0 [pid 360] <... restart_syscall resumed>) = 0 [pid 358] <... ioctl resumed>) = 0 [pid 634] <... write resumed>) = 4 [pid 631] <... ioctl resumed>) = 0 [pid 361] close(3 [pid 358] close(3 [pid 634] close(3 [pid 361] <... close resumed>) = 0 [pid 358] <... close resumed>) = 0 [pid 634] <... close resumed>) = 0 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 634] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 360] <... openat resumed>) = 3 [pid 634] <... openat resumed>) = 3 [pid 631] ioctl(5, LOOP_SET_FD, 4 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 636 [pid 360] ioctl(3, LOOP_CLR_FD [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 637 [pid 634] ioctl(3, BLKSECDISCARD, [0, 0] [pid 631] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 635 attached [pid 634] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 631] close(5 [pid 360] close(3 [pid 635] set_robust_list(0x5555574d4660, 24 [pid 634] memfd_create("syzkaller", 0 [pid 631] <... close resumed>) = 0 [pid 360] <... close resumed>) = 0 [pid 635] <... set_robust_list resumed>) = 0 [pid 634] <... memfd_create resumed>) = 4 [pid 631] close(4 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 634] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 636 attached [pid 636] set_robust_list(0x5555574d4660, 24 [pid 631] <... close resumed>) = 0 [pid 636] <... set_robust_list resumed>) = 0 [pid 636] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 634] <... mmap resumed>) = 0x7f1bc18a3000 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 638 [pid 631] exit_group(0 [pid 636] <... prctl resumed>) = 0 [pid 636] setpgid(0, 0) = 0 [pid 636] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 635] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 634] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 631] <... exit_group resumed>) = ? [pid 636] <... openat resumed>) = 3 [pid 636] write(3, "1000", 4) = 4 [pid 636] close(3 [pid 634] <... write resumed>) = 262144 [pid 636] <... close resumed>) = 0 [pid 631] +++ exited with 0 +++ [pid 635] <... prctl resumed>) = 0 [pid 634] munmap(0x7f1bc18a3000, 138412032 [pid 636] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 634] <... munmap resumed>) = 0 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=631, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 636] <... openat resumed>) = 3 [pid 635] setpgid(0, 0 [pid 634] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 636] ioctl(3, BLKSECDISCARD, [0, 0] [pid 635] <... setpgid resumed>) = 0 [pid 634] <... openat resumed>) = 5 [pid 357] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 637 attached [pid 636] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 635] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 634] ioctl(5, LOOP_SET_FD, 4 [pid 637] set_robust_list(0x5555574d4660, 24 [pid 636] memfd_create("syzkaller", 0 [pid 635] <... openat resumed>) = 3 [pid 634] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 637] <... set_robust_list resumed>) = 0 [pid 636] <... memfd_create resumed>) = 4 [pid 635] write(3, "1000", 4 [pid 634] ioctl(5, LOOP_CLR_FD [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 637] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 636] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 635] <... write resumed>) = 4 [pid 634] <... ioctl resumed>) = 0 [pid 357] <... openat resumed>) = 3 [pid 637] <... prctl resumed>) = 0 [pid 636] <... mmap resumed>) = 0x7f1bc18a3000 [pid 635] close(3 [pid 357] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 638 attached [pid 637] setpgid(0, 0 [pid 636] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 635] <... close resumed>) = 0 [pid 357] <... ioctl resumed>) = 0 [pid 638] set_robust_list(0x5555574d4660, 24 [pid 637] <... setpgid resumed>) = 0 [pid 635] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 634] ioctl(5, LOOP_SET_FD, 4 [pid 357] close(3 [pid 638] <... set_robust_list resumed>) = 0 [pid 357] <... close resumed>) = 0 [pid 638] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 638] <... prctl resumed>) = 0 [pid 638] setpgid(0, 0 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 639 [pid 638] <... setpgid resumed>) = 0 [pid 638] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 638] write(3, "1000", 4) = 4 [pid 638] close(3) = 0 [pid 638] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 636] <... write resumed>) = 262144 [pid 638] <... openat resumed>) = 3 [pid 636] munmap(0x7f1bc18a3000, 138412032 [pid 638] ioctl(3, BLKSECDISCARD, [0, 0] [pid 636] <... munmap resumed>) = 0 [pid 638] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 638] memfd_create("syzkaller", 0 [pid 636] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 638] <... memfd_create resumed>) = 4 [pid 636] <... openat resumed>) = 5 [pid 638] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 636] ioctl(5, LOOP_SET_FD, 4 [pid 638] <... mmap resumed>) = 0x7f1bc18a3000 [pid 636] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 638] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 637] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 636] ioctl(5, LOOP_CLR_FD [pid 635] <... openat resumed>) = 3 [pid 634] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 638] <... write resumed>) = 262144 [pid 637] <... openat resumed>) = 3 [pid 636] <... ioctl resumed>) = 0 [pid 635] ioctl(3, BLKSECDISCARD, [0, 0] [pid 634] close(5 [pid 637] write(3, "1000", 4 [pid 635] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 634] <... close resumed>) = 0 [pid 637] <... write resumed>) = 4 [pid 635] memfd_create("syzkaller", 0 [pid 634] close(4./strace-static-x86_64: Process 639 attached [pid 637] close(3 [pid 635] <... memfd_create resumed>) = 4 [pid 639] set_robust_list(0x5555574d4660, 24) = 0 [pid 639] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 637] <... close resumed>) = 0 [pid 636] ioctl(5, LOOP_SET_FD, 4 [pid 635] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 634] <... close resumed>) = 0 [pid 639] setpgid(0, 0 [pid 638] munmap(0x7f1bc18a3000, 138412032 [pid 637] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 636] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 635] <... mmap resumed>) = 0x7f1bc18a3000 [pid 634] exit_group(0 [pid 639] <... setpgid resumed>) = 0 [pid 638] <... munmap resumed>) = 0 [pid 637] <... openat resumed>) = 3 [pid 636] close(5 [pid 639] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 638] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 636] <... close resumed>) = 0 [pid 639] <... openat resumed>) = 3 [pid 638] <... openat resumed>) = 5 [pid 636] close(4 [pid 639] write(3, "1000", 4 [pid 638] ioctl(5, LOOP_SET_FD, 4 [pid 637] ioctl(3, BLKSECDISCARD, [0, 0] [pid 636] <... close resumed>) = 0 [pid 635] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 634] <... exit_group resumed>) = ? [pid 639] <... write resumed>) = 4 [pid 638] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 637] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 636] exit_group(0 [pid 639] close(3 [pid 638] ioctl(5, LOOP_CLR_FD [pid 636] <... exit_group resumed>) = ? [pid 639] <... close resumed>) = 0 [pid 638] <... ioctl resumed>) = 0 [pid 637] memfd_create("syzkaller", 0 [pid 636] +++ exited with 0 +++ [pid 635] <... write resumed>) = 262144 [pid 634] +++ exited with 0 +++ [pid 639] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 637] <... memfd_create resumed>) = 4 [pid 635] munmap(0x7f1bc18a3000, 138412032 [pid 639] <... openat resumed>) = 3 [pid 637] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 635] <... munmap resumed>) = 0 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=636, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=634, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 639] ioctl(3, BLKSECDISCARD, [0, 0] [pid 637] <... mmap resumed>) = 0x7f1bc18a3000 [pid 635] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 639] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 361] <... restart_syscall resumed>) = 0 [pid 359] <... openat resumed>) = 3 [pid 639] memfd_create("syzkaller", 0 [pid 638] ioctl(5, LOOP_SET_FD, 4 [pid 359] ioctl(3, LOOP_CLR_FD [pid 639] <... memfd_create resumed>) = 4 [pid 638] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] <... ioctl resumed>) = 0 [pid 639] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 638] close(5 [pid 637] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 635] <... openat resumed>) = 5 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 359] close(3 [pid 639] <... mmap resumed>) = 0x7f1bc18a3000 [pid 638] <... close resumed>) = 0 [pid 361] <... openat resumed>) = 3 [pid 359] <... close resumed>) = 0 [pid 639] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 638] close(4 [pid 637] <... write resumed>) = 262144 [pid 635] ioctl(5, LOOP_SET_FD, 4 [pid 361] ioctl(3, LOOP_CLR_FD [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 639] <... write resumed>) = 262144 [pid 638] <... close resumed>) = 0 [pid 637] munmap(0x7f1bc18a3000, 138412032 [pid 635] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] <... ioctl resumed>) = 0 [pid 639] munmap(0x7f1bc18a3000, 138412032 [pid 638] exit_group(0 [pid 637] <... munmap resumed>) = 0 [pid 635] ioctl(5, LOOP_CLR_FD [pid 361] close(3 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 640 [pid 639] <... munmap resumed>) = 0 [pid 638] <... exit_group resumed>) = ? [pid 637] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 635] <... ioctl resumed>) = 0 [pid 361] <... close resumed>) = 0 [pid 639] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 638] +++ exited with 0 +++ [pid 637] <... openat resumed>) = 5 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 639] <... openat resumed>) = 5 [pid 637] ioctl(5, LOOP_SET_FD, 4 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=638, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 640 attached [pid 639] ioctl(5, LOOP_SET_FD, 4 [pid 637] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 641 [pid 640] set_robust_list(0x5555574d4660, 24 [pid 639] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 637] ioctl(5, LOOP_CLR_FD [pid 640] <... set_robust_list resumed>) = 0 [pid 639] ioctl(5, LOOP_CLR_FD [pid 637] <... ioctl resumed>) = 0 [pid 635] ioctl(5, LOOP_SET_FD, 4 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 640] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 639] <... ioctl resumed>) = 0 [pid 635] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] <... openat resumed>) = 3 [pid 640] <... prctl resumed>) = 0 [pid 635] close(5 [pid 360] ioctl(3, LOOP_CLR_FD [pid 640] setpgid(0, 0 [pid 635] <... close resumed>) = 0 [pid 360] <... ioctl resumed>) = 0 [pid 640] <... setpgid resumed>) = 0 [pid 635] close(4 [pid 360] close(3) = 0 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 639] ioctl(5, LOOP_SET_FD, 4 [pid 635] <... close resumed>) = 0 ./strace-static-x86_64: Process 641 attached [pid 640] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 639] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 637] ioctl(5, LOOP_SET_FD, 4 [pid 635] exit_group(0 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 642 [pid 641] set_robust_list(0x5555574d4660, 24 [pid 640] <... openat resumed>) = 3 [pid 639] close(5 [pid 637] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 635] <... exit_group resumed>) = ? [pid 641] <... set_robust_list resumed>) = 0 [pid 640] write(3, "1000", 4 [pid 639] <... close resumed>) = 0 [pid 637] close(5 [pid 639] close(4 [pid 635] +++ exited with 0 +++ [pid 637] <... close resumed>) = 0 [pid 640] <... write resumed>) = 4 [pid 641] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 640] close(3 [pid 639] <... close resumed>) = 0 [pid 637] close(4 [pid 641] <... prctl resumed>) = 0 [pid 640] <... close resumed>) = 0 [pid 639] exit_group(0 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=635, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 639] <... exit_group resumed>) = ? [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 641] setpgid(0, 0 [pid 640] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 639] +++ exited with 0 +++ [pid 637] <... close resumed>) = 0 [pid 356] <... restart_syscall resumed>) = 0 [pid 641] <... setpgid resumed>) = 0 [pid 640] <... openat resumed>) = 3 [pid 637] exit_group(0 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=639, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 641] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 640] ioctl(3, BLKSECDISCARD, [0, 0] [pid 637] <... exit_group resumed>) = ? [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 356] <... openat resumed>) = 3 [pid 641] <... openat resumed>) = 3 [pid 640] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 637] +++ exited with 0 +++ [pid 357] <... openat resumed>) = 3 [pid 356] ioctl(3, LOOP_CLR_FD [pid 641] write(3, "1000", 4 [pid 640] memfd_create("syzkaller", 0 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=637, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] ioctl(3, LOOP_CLR_FD [pid 356] <... ioctl resumed>) = 0 [pid 641] <... write resumed>) = 4 [pid 640] <... memfd_create resumed>) = 4 [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 357] <... ioctl resumed>) = 0 [pid 356] close(3 [pid 641] close(3 [pid 640] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 358] <... restart_syscall resumed>) = 0 [pid 357] close(3 [pid 356] <... close resumed>) = 0 [pid 641] <... close resumed>) = 0 [pid 640] <... mmap resumed>) = 0x7f1bc18a3000 [pid 357] <... close resumed>) = 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 642 attached [pid 641] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 642] set_robust_list(0x5555574d4660, 24 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 643 [pid 642] <... set_robust_list resumed>) = 0 [pid 641] <... openat resumed>) = 3 [pid 640] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 358] <... openat resumed>) = 3 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 644 [pid 642] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 641] ioctl(3, BLKSECDISCARD, [0, 0] [pid 358] ioctl(3, LOOP_CLR_FD [pid 642] <... prctl resumed>) = 0 [pid 358] <... ioctl resumed>) = 0 [pid 642] setpgid(0, 0 [pid 358] close(3 [pid 642] <... setpgid resumed>) = 0 [pid 641] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 640] <... write resumed>) = 262144 [pid 358] <... close resumed>) = 0 [pid 642] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 641] memfd_create("syzkaller", 0 [pid 640] munmap(0x7f1bc18a3000, 138412032 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 642] <... openat resumed>) = 3 [pid 641] <... memfd_create resumed>) = 4 [pid 640] <... munmap resumed>) = 0 [pid 642] write(3, "1000", 4 [pid 641] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 640] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 645 [pid 642] <... write resumed>) = 4 [pid 641] <... mmap resumed>) = 0x7f1bc18a3000 [pid 640] <... openat resumed>) = 5 [pid 642] close(3) = 0 [pid 642] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 642] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 642] memfd_create("syzkaller", 0) = 4 [pid 642] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 641] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 642] <... mmap resumed>) = 0x7f1bc18a3000 [pid 640] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 644 attached [pid 642] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 641] <... write resumed>) = 262144 [pid 640] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 645 attached [pid 644] set_robust_list(0x5555574d4660, 24 [pid 642] <... write resumed>) = 262144 [pid 641] munmap(0x7f1bc18a3000, 138412032 [pid 640] ioctl(5, LOOP_CLR_FD./strace-static-x86_64: Process 643 attached [pid 644] <... set_robust_list resumed>) = 0 [pid 640] <... ioctl resumed>) = 0 [pid 645] set_robust_list(0x5555574d4660, 24 [pid 644] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 643] set_robust_list(0x5555574d4660, 24 [pid 641] <... munmap resumed>) = 0 [pid 645] <... set_robust_list resumed>) = 0 [pid 644] <... prctl resumed>) = 0 [pid 643] <... set_robust_list resumed>) = 0 [pid 642] munmap(0x7f1bc18a3000, 138412032 [pid 641] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 645] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 644] setpgid(0, 0 [pid 643] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 642] <... munmap resumed>) = 0 [pid 641] <... openat resumed>) = 5 [pid 645] <... prctl resumed>) = 0 [pid 644] <... setpgid resumed>) = 0 [pid 643] <... prctl resumed>) = 0 [pid 642] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 641] ioctl(5, LOOP_SET_FD, 4 [pid 640] ioctl(5, LOOP_SET_FD, 4 [pid 645] setpgid(0, 0 [pid 644] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 643] setpgid(0, 0 [pid 642] <... openat resumed>) = 5 [pid 641] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 640] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 644] <... openat resumed>) = 3 [pid 643] <... setpgid resumed>) = 0 [pid 642] ioctl(5, LOOP_SET_FD, 4 [pid 644] write(3, "1000", 4 [pid 643] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 642] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 644] <... write resumed>) = 4 [pid 643] <... openat resumed>) = 3 [pid 642] ioctl(5, LOOP_CLR_FD [pid 644] close(3 [pid 643] write(3, "1000", 4 [pid 642] <... ioctl resumed>) = 0 [pid 644] <... close resumed>) = 0 [pid 643] <... write resumed>) = 4 [pid 641] ioctl(5, LOOP_CLR_FD [pid 640] close(5 [pid 645] <... setpgid resumed>) = 0 [pid 644] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 643] close(3 [pid 641] <... ioctl resumed>) = 0 [pid 640] <... close resumed>) = 0 [pid 645] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 644] <... openat resumed>) = 3 [pid 643] <... close resumed>) = 0 [pid 640] close(4 [pid 644] ioctl(3, BLKSECDISCARD, [0, 0] [pid 643] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 642] ioctl(5, LOOP_SET_FD, 4 [pid 644] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 643] <... openat resumed>) = 3 [pid 644] memfd_create("syzkaller", 0 [pid 643] ioctl(3, BLKSECDISCARD, [0, 0] [pid 642] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 640] <... close resumed>) = 0 [pid 645] <... openat resumed>) = 3 [pid 645] write(3, "1000", 4 [pid 644] <... memfd_create resumed>) = 4 [pid 643] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 642] close(5 [pid 641] ioctl(5, LOOP_SET_FD, 4 [pid 640] exit_group(0 [pid 645] <... write resumed>) = 4 [pid 644] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 643] memfd_create("syzkaller", 0 [pid 642] <... close resumed>) = 0 [pid 641] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 640] <... exit_group resumed>) = ? [pid 645] close(3 [pid 644] <... mmap resumed>) = 0x7f1bc18a3000 [pid 643] <... memfd_create resumed>) = 4 [pid 642] close(4 [pid 641] close(5 [pid 645] <... close resumed>) = 0 [pid 644] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 643] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 642] <... close resumed>) = 0 [pid 641] <... close resumed>) = 0 [pid 640] +++ exited with 0 +++ [pid 645] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 644] <... write resumed>) = 262144 [pid 643] <... mmap resumed>) = 0x7f1bc18a3000 [pid 642] exit_group(0 [pid 641] close(4 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=640, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 645] <... openat resumed>) = 3 [pid 644] munmap(0x7f1bc18a3000, 138412032 [pid 643] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 642] <... exit_group resumed>) = ? [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 645] ioctl(3, BLKSECDISCARD, [0, 0] [pid 644] <... munmap resumed>) = 0 [pid 643] <... write resumed>) = 262144 [pid 642] +++ exited with 0 +++ [pid 641] <... close resumed>) = 0 [pid 359] <... restart_syscall resumed>) = 0 [pid 645] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 644] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 643] munmap(0x7f1bc18a3000, 138412032 [pid 641] exit_group(0 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=642, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 645] memfd_create("syzkaller", 0 [pid 644] <... openat resumed>) = 5 [pid 643] <... munmap resumed>) = 0 [pid 641] <... exit_group resumed>) = ? [pid 645] <... memfd_create resumed>) = 4 [pid 644] ioctl(5, LOOP_SET_FD, 4 [pid 643] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 644] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 643] <... openat resumed>) = 5 [pid 359] <... openat resumed>) = 3 [pid 644] ioctl(5, LOOP_CLR_FD [pid 643] ioctl(5, LOOP_SET_FD, 4 [pid 641] +++ exited with 0 +++ [pid 359] ioctl(3, LOOP_CLR_FD [pid 645] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 644] <... ioctl resumed>) = 0 [pid 643] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] <... ioctl resumed>) = 0 [pid 645] <... mmap resumed>) = 0x7f1bc18a3000 [pid 643] ioctl(5, LOOP_CLR_FD [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=641, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] close(3 [pid 643] <... ioctl resumed>) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 359] <... close resumed>) = 0 [pid 361] <... openat resumed>) = 3 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 645] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 361] ioctl(3, LOOP_CLR_FD [pid 360] <... openat resumed>) = 3 [pid 644] ioctl(5, LOOP_SET_FD, 4 [pid 361] <... ioctl resumed>) = 0 [pid 360] ioctl(3, LOOP_CLR_FD [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 646 [pid 644] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 643] ioctl(5, LOOP_SET_FD, 4 [pid 361] close(3 [pid 360] <... ioctl resumed>) = 0 [pid 644] close(5 [pid 643] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] <... close resumed>) = 0 [pid 360] close(3 [pid 645] <... write resumed>) = 262144 [pid 644] <... close resumed>) = 0 [pid 643] close(5 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 360] <... close resumed>) = 0 [pid 645] munmap(0x7f1bc18a3000, 138412032 [pid 644] close(4 [pid 643] <... close resumed>) = 0 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 645] <... munmap resumed>) = 0 [pid 644] <... close resumed>) = 0 [pid 643] close(4 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 647 [pid 645] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 644] exit_group(0 [pid 643] <... close resumed>) = 0 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 648 ./strace-static-x86_64: Process 647 attached [pid 645] <... openat resumed>) = 5 [pid 644] <... exit_group resumed>) = ? [pid 643] exit_group(0 [pid 647] set_robust_list(0x5555574d4660, 24 [pid 645] ioctl(5, LOOP_SET_FD, 4 [pid 644] +++ exited with 0 +++ [pid 643] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 648 attached [pid 647] <... set_robust_list resumed>) = 0 [pid 645] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 643] +++ exited with 0 +++ [pid 645] ioctl(5, LOOP_CLR_FD [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=644, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 647] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=643, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 648] set_robust_list(0x5555574d4660, 24 [pid 647] <... prctl resumed>) = 0 [pid 645] <... ioctl resumed>) = 0 [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 648] <... set_robust_list resumed>) = 0 [pid 647] setpgid(0, 0 [pid 357] <... restart_syscall resumed>) = 0 [pid 356] <... restart_syscall resumed>) = 0 [pid 648] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 647] <... setpgid resumed>) = 0 [pid 648] <... prctl resumed>) = 0 [pid 647] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 648] setpgid(0, 0 [pid 647] <... openat resumed>) = 3 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 646 attached [pid 648] <... setpgid resumed>) = 0 [pid 647] write(3, "1000", 4 [pid 645] ioctl(5, LOOP_SET_FD, 4 [pid 357] <... openat resumed>) = 3 [pid 356] <... openat resumed>) = 3 [pid 648] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 647] <... write resumed>) = 4 [pid 646] set_robust_list(0x5555574d4660, 24 [pid 645] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 357] ioctl(3, LOOP_CLR_FD [pid 356] ioctl(3, LOOP_CLR_FD [pid 648] <... openat resumed>) = 3 [pid 647] close(3 [pid 646] <... set_robust_list resumed>) = 0 [pid 645] close(5 [pid 357] <... ioctl resumed>) = 0 [pid 356] <... ioctl resumed>) = 0 [pid 648] write(3, "1000", 4 [pid 647] <... close resumed>) = 0 [pid 646] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 645] <... close resumed>) = 0 [pid 357] close(3 [pid 356] close(3 [pid 648] <... write resumed>) = 4 [pid 647] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 646] <... prctl resumed>) = 0 [pid 645] close(4 [pid 357] <... close resumed>) = 0 [pid 356] <... close resumed>) = 0 [pid 648] close(3 [pid 647] <... openat resumed>) = 3 [pid 646] setpgid(0, 0 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 648] <... close resumed>) = 0 [pid 647] ioctl(3, BLKSECDISCARD, [0, 0] [pid 646] <... setpgid resumed>) = 0 [pid 645] <... close resumed>) = 0 [pid 648] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 647] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 646] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 645] exit_group(0 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 649 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 650 [pid 648] <... openat resumed>) = 3 [pid 647] memfd_create("syzkaller", 0 [pid 646] <... openat resumed>) = 3 [pid 645] <... exit_group resumed>) = ? [pid 648] ioctl(3, BLKSECDISCARD, [0, 0] [pid 647] <... memfd_create resumed>) = 4 [pid 646] write(3, "1000", 4) = 4 [pid 648] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 647] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 646] close(3 [pid 645] +++ exited with 0 +++ [pid 648] memfd_create("syzkaller", 0 [pid 647] <... mmap resumed>) = 0x7f1bc18a3000 [pid 646] <... close resumed>) = 0 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=645, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 648] <... memfd_create resumed>) = 4 [pid 646] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 646] <... openat resumed>) = 3 [pid 358] <... restart_syscall resumed>) = 0 [pid 646] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 646] memfd_create("syzkaller", 0 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 648] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 647] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 646] <... memfd_create resumed>) = 4 [pid 358] <... openat resumed>) = 3 [pid 648] <... mmap resumed>) = 0x7f1bc18a3000 [pid 646] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 358] ioctl(3, LOOP_CLR_FD [pid 646] <... mmap resumed>) = 0x7f1bc18a3000 [pid 358] <... ioctl resumed>) = 0 [pid 647] <... write resumed>) = 262144 [pid 646] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 358] close(3 [pid 648] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 647] munmap(0x7f1bc18a3000, 138412032 [pid 646] <... write resumed>) = 262144 [pid 358] <... close resumed>) = 0 [pid 646] munmap(0x7f1bc18a3000, 138412032 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 648] <... write resumed>) = 262144 [pid 646] <... munmap resumed>) = 0 [pid 648] munmap(0x7f1bc18a3000, 138412032 [pid 647] <... munmap resumed>) = 0 [pid 646] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 651 ./strace-static-x86_64: Process 650 attached ./strace-static-x86_64: Process 649 attached [pid 648] <... munmap resumed>) = 0 [pid 647] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 646] <... openat resumed>) = 5 [pid 650] set_robust_list(0x5555574d4660, 24 [pid 649] set_robust_list(0x5555574d4660, 24 [pid 648] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 647] <... openat resumed>) = 5 [pid 646] ioctl(5, LOOP_SET_FD, 4 [pid 650] <... set_robust_list resumed>) = 0 [pid 649] <... set_robust_list resumed>) = 0 [pid 648] <... openat resumed>) = 5 [pid 647] ioctl(5, LOOP_SET_FD, 4 [pid 646] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 650] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 649] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 648] ioctl(5, LOOP_SET_FD, 4 [pid 647] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 646] ioctl(5, LOOP_CLR_FD [pid 650] <... prctl resumed>) = 0 [pid 649] <... prctl resumed>) = 0 [pid 648] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 647] ioctl(5, LOOP_CLR_FD [pid 646] <... ioctl resumed>) = 0 [pid 650] setpgid(0, 0 [pid 649] setpgid(0, 0 [pid 648] ioctl(5, LOOP_CLR_FD [pid 647] <... ioctl resumed>) = 0 [pid 650] <... setpgid resumed>) = 0 [pid 649] <... setpgid resumed>) = 0 [pid 648] <... ioctl resumed>) = 0 [pid 650] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 649] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 650] <... openat resumed>) = 3 [pid 649] <... openat resumed>) = 3 [pid 650] write(3, "1000", 4 [pid 649] write(3, "1000", 4 [pid 650] <... write resumed>) = 4 [pid 649] <... write resumed>) = 4 [pid 647] ioctl(5, LOOP_SET_FD, 4 [pid 646] ioctl(5, LOOP_SET_FD, 4 [pid 650] close(3 [pid 649] close(3 [pid 648] ioctl(5, LOOP_SET_FD, 4 [pid 647] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 646] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 651 attached [pid 650] <... close resumed>) = 0 [pid 649] <... close resumed>) = 0 [pid 648] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 647] close(5 [pid 646] close(5 [pid 651] set_robust_list(0x5555574d4660, 24 [pid 650] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 649] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 648] close(5 [pid 647] <... close resumed>) = 0 [pid 646] <... close resumed>) = 0 [pid 651] <... set_robust_list resumed>) = 0 [pid 650] <... openat resumed>) = 3 [pid 649] <... openat resumed>) = 3 [pid 648] <... close resumed>) = 0 [pid 647] close(4 [pid 646] close(4 [pid 651] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 650] ioctl(3, BLKSECDISCARD, [0, 0] [pid 649] ioctl(3, BLKSECDISCARD, [0, 0] [pid 648] close(4 [pid 647] <... close resumed>) = 0 [pid 646] <... close resumed>) = 0 [pid 651] <... prctl resumed>) = 0 [pid 650] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 649] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 646] exit_group(0 [pid 651] setpgid(0, 0 [pid 649] memfd_create("syzkaller", 0 [pid 646] <... exit_group resumed>) = ? [pid 651] <... setpgid resumed>) = 0 [pid 650] memfd_create("syzkaller", 0 [pid 649] <... memfd_create resumed>) = 4 [pid 648] <... close resumed>) = 0 [pid 647] exit_group(0 [pid 646] +++ exited with 0 +++ [pid 651] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 650] <... memfd_create resumed>) = 4 [pid 649] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 648] exit_group(0 [pid 647] <... exit_group resumed>) = ? [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=646, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 651] <... openat resumed>) = 3 [pid 650] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 649] <... mmap resumed>) = 0x7f1bc18a3000 [pid 648] <... exit_group resumed>) = ? [pid 651] write(3, "1000", 4 [pid 650] <... mmap resumed>) = 0x7f1bc18a3000 [pid 649] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 647] +++ exited with 0 +++ [pid 651] <... write resumed>) = 4 [pid 649] <... write resumed>) = 262144 [pid 648] +++ exited with 0 +++ [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 651] close(3 [pid 649] munmap(0x7f1bc18a3000, 138412032 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=647, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=648, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] <... openat resumed>) = 3 [pid 651] <... close resumed>) = 0 [pid 650] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 649] <... munmap resumed>) = 0 [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 359] ioctl(3, LOOP_CLR_FD [pid 651] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 649] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 361] <... restart_syscall resumed>) = 0 [pid 359] <... ioctl resumed>) = 0 [pid 651] <... openat resumed>) = 3 [pid 649] <... openat resumed>) = 5 [pid 359] close(3 [pid 651] ioctl(3, BLKSECDISCARD, [0, 0] [pid 649] ioctl(5, LOOP_SET_FD, 4 [pid 359] <... close resumed>) = 0 [pid 650] <... write resumed>) = 262144 [pid 651] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 649] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 650] munmap(0x7f1bc18a3000, 138412032 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 651] memfd_create("syzkaller", 0 [pid 650] <... munmap resumed>) = 0 [pid 649] ioctl(5, LOOP_CLR_FD [pid 361] <... openat resumed>) = 3 [pid 651] <... memfd_create resumed>) = 4 [pid 650] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 649] <... ioctl resumed>) = 0 [pid 361] ioctl(3, LOOP_CLR_FD [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 652 [pid 651] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 650] <... openat resumed>) = 5 [pid 361] <... ioctl resumed>) = 0 [pid 360] <... openat resumed>) = 3 [pid 651] <... mmap resumed>) = 0x7f1bc18a3000 [pid 650] ioctl(5, LOOP_SET_FD, 4 [pid 361] close(3 [pid 360] ioctl(3, LOOP_CLR_FD [pid 651] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 361] <... close resumed>) = 0 [pid 360] <... ioctl resumed>) = 0 [pid 651] <... write resumed>) = 262144 [pid 649] ioctl(5, LOOP_SET_FD, 4 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 360] close(3 [pid 651] munmap(0x7f1bc18a3000, 138412032 [pid 649] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] <... close resumed>) = 0 [pid 651] <... munmap resumed>) = 0 [pid 649] close(5 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 653 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 651] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 649] <... close resumed>) = 0 [pid 651] <... openat resumed>) = 5 [pid 649] close(4 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 654 [pid 651] ioctl(5, LOOP_SET_FD, 4 [pid 649] <... close resumed>) = 0 [pid 651] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 649] exit_group(0 [pid 651] ioctl(5, LOOP_CLR_FD [pid 649] <... exit_group resumed>) = ? [pid 651] <... ioctl resumed>) = 0 [pid 649] +++ exited with 0 +++ [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=649, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 654 attached [pid 650] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 357] <... restart_syscall resumed>) = 0 [pid 650] ioctl(5, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 652 attached [pid 651] ioctl(5, LOOP_SET_FD, 4 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 652] set_robust_list(0x5555574d4660, 24 [pid 651] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 357] <... openat resumed>) = 3 [pid 651] close(5 [pid 357] ioctl(3, LOOP_CLR_FD [pid 651] <... close resumed>) = 0 [pid 357] <... ioctl resumed>) = 0 [pid 652] <... set_robust_list resumed>) = 0 [pid 651] close(4 [pid 357] close(3 [pid 652] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 651] <... close resumed>) = 0 [pid 650] ioctl(5, LOOP_SET_FD, 4 [pid 357] <... close resumed>) = 0 [pid 652] <... prctl resumed>) = 0 [pid 651] exit_group(0 [pid 650] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 652] setpgid(0, 0 [pid 651] <... exit_group resumed>) = ? [pid 650] close(5 [pid 654] set_robust_list(0x5555574d4660, 24 [pid 652] <... setpgid resumed>) = 0 [pid 651] +++ exited with 0 +++ [pid 650] <... close resumed>) = 0 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 655 ./strace-static-x86_64: Process 653 attached [pid 654] <... set_robust_list resumed>) = 0 [pid 652] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 650] close(4 [pid 654] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 653] set_robust_list(0x5555574d4660, 24 [pid 652] <... openat resumed>) = 3 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=651, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 654] <... prctl resumed>) = 0 [pid 653] <... set_robust_list resumed>) = 0 [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 654] setpgid(0, 0 [pid 653] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 652] write(3, "1000", 4 [pid 650] <... close resumed>) = 0 [pid 358] <... restart_syscall resumed>) = 0 [pid 654] <... setpgid resumed>) = 0 [pid 653] <... prctl resumed>) = 0 [pid 652] <... write resumed>) = 4 [pid 650] exit_group(0./strace-static-x86_64: Process 655 attached [pid 654] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 653] setpgid(0, 0 [pid 652] close(3 [pid 650] <... exit_group resumed>) = ? [pid 654] <... openat resumed>) = 3 [pid 653] <... setpgid resumed>) = 0 [pid 652] <... close resumed>) = 0 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 655] set_robust_list(0x5555574d4660, 24 [pid 654] write(3, "1000", 4 [pid 653] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 652] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 650] +++ exited with 0 +++ [pid 358] <... openat resumed>) = 3 [pid 655] <... set_robust_list resumed>) = 0 [pid 654] <... write resumed>) = 4 [pid 653] <... openat resumed>) = 3 [pid 652] <... openat resumed>) = 3 [pid 358] ioctl(3, LOOP_CLR_FD [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=650, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 655] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 654] close(3 [pid 653] write(3, "1000", 4 [pid 652] ioctl(3, BLKSECDISCARD, [0, 0] [pid 358] <... ioctl resumed>) = 0 [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 655] <... prctl resumed>) = 0 [pid 654] <... close resumed>) = 0 [pid 653] <... write resumed>) = 4 [pid 652] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 358] close(3 [pid 356] <... restart_syscall resumed>) = 0 [pid 655] setpgid(0, 0 [pid 654] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 653] close(3 [pid 652] memfd_create("syzkaller", 0 [pid 358] <... close resumed>) = 0 [pid 655] <... setpgid resumed>) = 0 [pid 654] <... openat resumed>) = 3 [pid 653] <... close resumed>) = 0 [pid 652] <... memfd_create resumed>) = 4 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 655] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 654] ioctl(3, BLKSECDISCARD, [0, 0] [pid 653] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 652] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 655] <... openat resumed>) = 3 [pid 654] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 653] <... openat resumed>) = 3 [pid 652] <... mmap resumed>) = 0x7f1bc18a3000 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 656 [pid 356] <... openat resumed>) = 3 [pid 655] write(3, "1000", 4 [pid 654] memfd_create("syzkaller", 0 [pid 653] ioctl(3, BLKSECDISCARD, [0, 0] [pid 356] ioctl(3, LOOP_CLR_FD [pid 654] <... memfd_create resumed>) = 4 [pid 653] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 356] <... ioctl resumed>) = 0 [pid 654] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 653] memfd_create("syzkaller", 0 [pid 356] close(3 [pid 654] <... mmap resumed>) = 0x7f1bc18a3000 [pid 653] <... memfd_create resumed>) = 4 [pid 356] <... close resumed>) = 0 [pid 655] <... write resumed>) = 4 [pid 654] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 653] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 652] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 655] close(3 [pid 654] <... write resumed>) = 262144 [pid 653] <... mmap resumed>) = 0x7f1bc18a3000 ./strace-static-x86_64: Process 656 attached [pid 655] <... close resumed>) = 0 [pid 654] munmap(0x7f1bc18a3000, 138412032 [pid 653] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 652] <... write resumed>) = 262144 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 657 [pid 656] set_robust_list(0x5555574d4660, 24 [pid 655] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 654] <... munmap resumed>) = 0 [pid 653] <... write resumed>) = 262144 [pid 652] munmap(0x7f1bc18a3000, 138412032 [pid 656] <... set_robust_list resumed>) = 0 [pid 655] <... openat resumed>) = 3 [pid 654] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 653] munmap(0x7f1bc18a3000, 138412032 [pid 652] <... munmap resumed>) = 0 [pid 656] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 655] ioctl(3, BLKSECDISCARD, [0, 0] [pid 654] <... openat resumed>) = 5 [pid 653] <... munmap resumed>) = 0 [pid 652] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 656] <... prctl resumed>) = 0 [pid 655] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 654] ioctl(5, LOOP_SET_FD, 4 [pid 653] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 652] <... openat resumed>) = 5 [pid 656] setpgid(0, 0 [pid 655] memfd_create("syzkaller", 0 [pid 654] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 653] <... openat resumed>) = 5 [pid 652] ioctl(5, LOOP_SET_FD, 4 [pid 656] <... setpgid resumed>) = 0 [pid 655] <... memfd_create resumed>) = 4 [pid 654] ioctl(5, LOOP_CLR_FD [pid 653] ioctl(5, LOOP_SET_FD, 4 [pid 652] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 656] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 655] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 654] <... ioctl resumed>) = 0 [pid 653] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 652] ioctl(5, LOOP_CLR_FD [pid 656] <... openat resumed>) = 3 [pid 655] <... mmap resumed>) = 0x7f1bc18a3000 [pid 653] ioctl(5, LOOP_CLR_FD [pid 652] <... ioctl resumed>) = 0 [pid 656] write(3, "1000", 4 [pid 653] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 657 attached [pid 654] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 654] close(5) = 0 [pid 655] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 656] <... write resumed>) = 4 [pid 654] close(4 [pid 653] ioctl(5, LOOP_SET_FD, 4 [pid 656] close(3 [pid 655] <... write resumed>) = 262144 [pid 654] <... close resumed>) = 0 [pid 653] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 657] set_robust_list(0x5555574d4660, 24 [pid 656] <... close resumed>) = 0 [pid 655] munmap(0x7f1bc18a3000, 138412032 [pid 654] exit_group(0 [pid 653] close(5 [pid 657] <... set_robust_list resumed>) = 0 [pid 656] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 655] <... munmap resumed>) = 0 [pid 654] <... exit_group resumed>) = ? [pid 653] <... close resumed>) = 0 [pid 657] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 656] <... openat resumed>) = 3 [pid 655] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 654] +++ exited with 0 +++ [pid 653] close(4 [pid 652] ioctl(5, LOOP_SET_FD, 4 [pid 657] <... prctl resumed>) = 0 [pid 656] ioctl(3, BLKSECDISCARD, [0, 0] [pid 655] <... openat resumed>) = 5 [pid 653] <... close resumed>) = 0 [pid 652] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 657] setpgid(0, 0 [pid 656] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 655] ioctl(5, LOOP_SET_FD, 4 [pid 653] exit_group(0 [pid 652] close(5 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=654, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 657] <... setpgid resumed>) = 0 [pid 656] memfd_create("syzkaller", 0 [pid 655] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 653] <... exit_group resumed>) = ? [pid 652] <... close resumed>) = 0 [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 657] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 656] <... memfd_create resumed>) = 4 [pid 655] ioctl(5, LOOP_CLR_FD [pid 653] +++ exited with 0 +++ [pid 652] close(4 [pid 360] <... restart_syscall resumed>) = 0 [pid 657] <... openat resumed>) = 3 [pid 656] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 655] <... ioctl resumed>) = 0 [pid 657] write(3, "1000", 4 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=653, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 657] <... write resumed>) = 4 [pid 656] <... mmap resumed>) = 0x7f1bc18a3000 [pid 652] <... close resumed>) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 657] close(3 [pid 361] <... openat resumed>) = 3 [pid 360] <... openat resumed>) = 3 [pid 657] <... close resumed>) = 0 [pid 361] ioctl(3, LOOP_CLR_FD [pid 360] ioctl(3, LOOP_CLR_FD [pid 657] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 361] <... ioctl resumed>) = 0 [pid 360] <... ioctl resumed>) = 0 [pid 657] <... openat resumed>) = 3 [pid 361] close(3 [pid 360] close(3 [pid 657] ioctl(3, BLKSECDISCARD, [0, 0] [pid 361] <... close resumed>) = 0 [pid 360] <... close resumed>) = 0 [pid 657] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 657] memfd_create("syzkaller", 0 [pid 656] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 652] exit_group(0 [pid 657] <... memfd_create resumed>) = 4 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 658 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 659 [pid 657] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 657] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 656] <... write resumed>) = 262144 [pid 655] ioctl(5, LOOP_SET_FD, 4 [pid 652] <... exit_group resumed>) = ? [pid 657] <... write resumed>) = 262144 [pid 656] munmap(0x7f1bc18a3000, 138412032 [pid 655] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 652] +++ exited with 0 +++ [pid 657] munmap(0x7f1bc18a3000, 138412032 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=652, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 656] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 658 attached [pid 657] <... munmap resumed>) = 0 [pid 656] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 655] close(5 [pid 658] set_robust_list(0x5555574d4660, 24 [pid 657] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 656] <... openat resumed>) = 5 [pid 655] <... close resumed>) = 0 [pid 658] <... set_robust_list resumed>) = 0 [pid 657] <... openat resumed>) = 5 [pid 656] ioctl(5, LOOP_SET_FD, 4 [pid 655] close(4 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 657] ioctl(5, LOOP_SET_FD, 4 [pid 656] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] <... openat resumed>) = 3 [pid 657] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] ioctl(3, LOOP_CLR_FD [pid 657] ioctl(5, LOOP_CLR_FD [pid 359] <... ioctl resumed>) = 0 [pid 657] <... ioctl resumed>) = 0 [pid 656] ioctl(5, LOOP_CLR_FD [pid 655] <... close resumed>) = 0 [pid 359] close(3 [pid 656] <... ioctl resumed>) = 0 [pid 359] <... close resumed>) = 0 [pid 655] exit_group(0 [pid 658] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 655] <... exit_group resumed>) = ? [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 655] +++ exited with 0 +++ [pid 658] <... prctl resumed>) = 0 [pid 657] ioctl(5, LOOP_SET_FD, 4 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 660 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=655, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 658] setpgid(0, 0 [pid 657] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 658] <... setpgid resumed>) = 0 [pid 657] close(5 [pid 656] ioctl(5, LOOP_SET_FD, 4 [pid 357] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 659 attached [pid 658] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 657] <... close resumed>) = 0 [pid 656] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 659] set_robust_list(0x5555574d4660, 24 [pid 658] <... openat resumed>) = 3 [pid 657] close(4 [pid 656] close(5 [pid 659] <... set_robust_list resumed>) = 0 [pid 658] write(3, "1000", 4 [pid 657] <... close resumed>) = 0 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 659] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 657] exit_group(0 [pid 357] <... openat resumed>) = 3 [pid 659] <... prctl resumed>) = 0 [pid 657] <... exit_group resumed>) = ? [pid 357] ioctl(3, LOOP_CLR_FD [pid 659] setpgid(0, 0 [pid 657] +++ exited with 0 +++ [pid 656] <... close resumed>) = 0 [pid 357] <... ioctl resumed>) = 0 [pid 659] <... setpgid resumed>) = 0 [pid 357] close(3 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=657, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 659] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 357] <... close resumed>) = 0 [pid 659] <... openat resumed>) = 3 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 659] write(3, "1000", 4 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 659] <... write resumed>) = 4 [pid 658] <... write resumed>) = 4 [pid 656] close(4 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 661 [pid 356] <... openat resumed>) = 3 [pid 659] close(3 [pid 658] close(3 [pid 356] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 660 attached [pid 659] <... close resumed>) = 0 [pid 356] <... ioctl resumed>) = 0 [pid 660] set_robust_list(0x5555574d4660, 24 [pid 659] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 658] <... close resumed>) = 0 [pid 656] <... close resumed>) = 0 [pid 356] close(3 [pid 660] <... set_robust_list resumed>) = 0 [pid 659] <... openat resumed>) = 3 [pid 658] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 656] exit_group(0 [pid 356] <... close resumed>) = 0 [pid 660] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 659] ioctl(3, BLKSECDISCARD, [0, 0] [pid 658] <... openat resumed>) = 3 [pid 656] <... exit_group resumed>) = ? [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 660] <... prctl resumed>) = 0 [pid 659] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 658] ioctl(3, BLKSECDISCARD, [0, 0] [pid 656] +++ exited with 0 +++ [pid 660] setpgid(0, 0 [pid 659] memfd_create("syzkaller", 0 [pid 658] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 662 [pid 660] <... setpgid resumed>) = 0 [pid 659] <... memfd_create resumed>) = 4 [pid 658] memfd_create("syzkaller", 0 [pid 358] --- 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] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 659] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 658] <... memfd_create resumed>) = 4 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 660] <... openat resumed>) = 3 [pid 659] <... mmap resumed>) = 0x7f1bc18a3000 [pid 658] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 358] <... openat resumed>) = 3 ./strace-static-x86_64: Process 661 attached [pid 660] write(3, "1000", 4 [pid 659] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 658] <... mmap resumed>) = 0x7f1bc18a3000 [pid 358] ioctl(3, LOOP_CLR_FD [pid 660] <... write resumed>) = 4 [pid 659] <... write resumed>) = 262144 [pid 358] <... ioctl resumed>) = 0 [pid 660] close(3 [pid 659] munmap(0x7f1bc18a3000, 138412032 [pid 658] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 358] close(3 [pid 660] <... close resumed>) = 0 [pid 659] <... munmap resumed>) = 0 [pid 358] <... close resumed>) = 0 [pid 660] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 659] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 660] <... openat resumed>) = 3 [pid 659] <... openat resumed>) = 5 [pid 658] <... write resumed>) = 262144 [pid 661] set_robust_list(0x5555574d4660, 24 [pid 660] ioctl(3, BLKSECDISCARD, [0, 0] [pid 659] ioctl(5, LOOP_SET_FD, 4 [pid 658] munmap(0x7f1bc18a3000, 138412032 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 663 [pid 661] <... set_robust_list resumed>) = 0 [pid 660] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 659] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 658] <... munmap resumed>) = 0 [pid 661] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 660] memfd_create("syzkaller", 0 [pid 659] ioctl(5, LOOP_CLR_FD [pid 658] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 661] <... prctl resumed>) = 0 [pid 660] <... memfd_create resumed>) = 4 [pid 659] <... ioctl resumed>) = 0 [pid 658] <... openat resumed>) = 5 ./strace-static-x86_64: Process 662 attached [pid 661] setpgid(0, 0 [pid 660] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 658] ioctl(5, LOOP_SET_FD, 4 [pid 662] set_robust_list(0x5555574d4660, 24 [pid 661] <... setpgid resumed>) = 0 [pid 660] <... mmap resumed>) = 0x7f1bc18a3000 [pid 658] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 662] <... set_robust_list resumed>) = 0 [pid 660] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 658] ioctl(5, LOOP_CLR_FD./strace-static-x86_64: Process 663 attached [pid 662] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 661] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 660] <... write resumed>) = 262144 [pid 659] ioctl(5, LOOP_SET_FD, 4 [pid 658] <... ioctl resumed>) = 0 [pid 663] set_robust_list(0x5555574d4660, 24 [pid 662] <... prctl resumed>) = 0 [pid 661] <... openat resumed>) = 3 [pid 660] munmap(0x7f1bc18a3000, 138412032 [pid 659] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 663] <... set_robust_list resumed>) = 0 [pid 662] setpgid(0, 0 [pid 661] write(3, "1000", 4 [pid 660] <... munmap resumed>) = 0 [pid 659] close(5 [pid 663] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 662] <... setpgid resumed>) = 0 [pid 661] <... write resumed>) = 4 [pid 660] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 659] <... close resumed>) = 0 [pid 663] <... prctl resumed>) = 0 [pid 662] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 661] close(3 [pid 660] <... openat resumed>) = 5 [pid 659] close(4 [pid 663] setpgid(0, 0 [pid 662] <... openat resumed>) = 3 [pid 661] <... close resumed>) = 0 [pid 660] ioctl(5, LOOP_SET_FD, 4 [pid 659] <... close resumed>) = 0 [pid 658] ioctl(5, LOOP_SET_FD, 4 [pid 663] <... setpgid resumed>) = 0 [pid 662] write(3, "1000", 4 [pid 661] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 660] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 659] exit_group(0 [pid 658] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 663] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 662] <... write resumed>) = 4 [pid 661] <... openat resumed>) = 3 [pid 660] ioctl(5, LOOP_CLR_FD [pid 659] <... exit_group resumed>) = ? [pid 658] close(5 [pid 663] <... openat resumed>) = 3 [pid 662] close(3 [pid 661] ioctl(3, BLKSECDISCARD, [0, 0] [pid 660] <... ioctl resumed>) = 0 [pid 659] +++ exited with 0 +++ [pid 658] <... close resumed>) = 0 [pid 663] write(3, "1000", 4 [pid 662] <... close resumed>) = 0 [pid 661] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 658] close(4 [pid 663] <... write resumed>) = 4 [pid 662] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 661] memfd_create("syzkaller", 0 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=659, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 662] <... openat resumed>) = 3 [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 662] ioctl(3, BLKSECDISCARD, [0, 0] [pid 360] <... restart_syscall resumed>) = 0 [pid 662] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 663] close(3 [pid 662] memfd_create("syzkaller", 0 [pid 661] <... memfd_create resumed>) = 4 [pid 660] ioctl(5, LOOP_SET_FD, 4 [pid 658] <... close resumed>) = 0 [pid 663] <... close resumed>) = 0 [pid 662] <... memfd_create resumed>) = 4 [pid 661] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 660] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 658] exit_group(0 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 663] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 662] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 661] <... mmap resumed>) = 0x7f1bc18a3000 [pid 660] close(5 [pid 658] <... exit_group resumed>) = ? [pid 360] <... openat resumed>) = 3 [pid 663] <... openat resumed>) = 3 [pid 662] <... mmap resumed>) = 0x7f1bc18a3000 [pid 660] <... close resumed>) = 0 [pid 360] ioctl(3, LOOP_CLR_FD [pid 662] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 661] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 660] close(4 [pid 360] <... ioctl resumed>) = 0 [pid 663] ioctl(3, BLKSECDISCARD, [0, 0] [pid 662] <... write resumed>) = 262144 [pid 661] <... write resumed>) = 262144 [pid 660] <... close resumed>) = 0 [pid 658] +++ exited with 0 +++ [pid 360] close(3 [pid 663] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 662] munmap(0x7f1bc18a3000, 138412032 [pid 661] munmap(0x7f1bc18a3000, 138412032 [pid 660] exit_group(0 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=658, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 360] <... close resumed>) = 0 [pid 663] memfd_create("syzkaller", 0 [pid 662] <... munmap resumed>) = 0 [pid 661] <... munmap resumed>) = 0 [pid 660] <... exit_group resumed>) = ? [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 663] <... memfd_create resumed>) = 4 [pid 662] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 661] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 660] +++ exited with 0 +++ [pid 361] <... restart_syscall resumed>) = 0 [pid 663] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 662] <... openat resumed>) = 5 [pid 661] <... openat resumed>) = 5 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 664 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=660, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 663] <... mmap resumed>) = 0x7f1bc18a3000 [pid 662] ioctl(5, LOOP_SET_FD, 4 [pid 661] ioctl(5, LOOP_SET_FD, 4 [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 662] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 359] <... restart_syscall resumed>) = 0 [pid 662] ioctl(5, LOOP_CLR_FD [pid 361] <... openat resumed>) = 3 [pid 662] <... ioctl resumed>) = 0 [pid 361] ioctl(3, LOOP_CLR_FD) = 0 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 361] close(3 [pid 359] <... openat resumed>) = 3 [pid 361] <... close resumed>) = 0 [pid 359] ioctl(3, LOOP_CLR_FD [pid 663] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 661] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 359] <... ioctl resumed>) = 0 [pid 359] close(3 [pid 662] ioctl(5, LOOP_SET_FD, 4 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 665 [pid 359] <... close resumed>) = 0 [pid 663] <... write resumed>) = 262144 [pid 662] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 661] ioctl(5, LOOP_CLR_FD [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 663] munmap(0x7f1bc18a3000, 138412032 [pid 662] close(5 [pid 661] <... ioctl resumed>) = 0 [pid 663] <... munmap resumed>) = 0 [pid 662] <... close resumed>) = 0 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 666 [pid 663] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 662] close(4./strace-static-x86_64: Process 664 attached [pid 663] <... openat resumed>) = 5 [pid 662] <... close resumed>) = 0 [pid 664] set_robust_list(0x5555574d4660, 24 [pid 663] ioctl(5, LOOP_SET_FD, 4 [pid 662] exit_group(0 [pid 661] ioctl(5, LOOP_SET_FD, 4 [pid 664] <... set_robust_list resumed>) = 0 [pid 663] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 662] <... exit_group resumed>) = ? [pid 661] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 666 attached [pid 664] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 663] ioctl(5, LOOP_CLR_FD [pid 662] +++ exited with 0 +++ [pid 661] close(5 [pid 666] set_robust_list(0x5555574d4660, 24 [pid 664] <... prctl resumed>) = 0 [pid 663] <... ioctl resumed>) = 0 [pid 661] <... close resumed>) = 0 [pid 666] <... set_robust_list resumed>) = 0 [pid 664] setpgid(0, 0 [pid 661] close(4 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=662, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 664] <... setpgid resumed>) = 0 [pid 356] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 356] ioctl(3, LOOP_CLR_FD [pid 661] <... close resumed>) = 0 [pid 356] <... ioctl resumed>) = 0 [pid 356] close(3) = 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 666] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 664] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 661] exit_group(0./strace-static-x86_64: Process 665 attached [pid 663] ioctl(5, LOOP_SET_FD, 4 [pid 661] <... exit_group resumed>) = ? [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 667 [pid 665] set_robust_list(0x5555574d4660, 24 [pid 663] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 665] <... set_robust_list resumed>) = 0 [pid 663] close(5 [pid 661] +++ exited with 0 +++ [pid 664] <... openat resumed>) = 3 [pid 666] <... prctl resumed>) = 0 [pid 666] setpgid(0, 0 [pid 665] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 664] write(3, "1000", 4 [pid 663] <... close resumed>) = 0 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=661, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 666] <... setpgid resumed>) = 0 [pid 665] <... prctl resumed>) = 0 [pid 664] <... write resumed>) = 4 [pid 663] close(4 [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 665] setpgid(0, 0 [pid 357] <... restart_syscall resumed>) = 0 [pid 665] <... setpgid resumed>) = 0 [pid 665] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 666] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 665] <... openat resumed>) = 3 [pid 664] close(3 [pid 663] <... close resumed>) = 0 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 666] <... openat resumed>) = 3 [pid 665] write(3, "1000", 4 [pid 664] <... close resumed>) = 0 [pid 663] exit_group(0 [pid 357] <... openat resumed>) = 3 [pid 666] write(3, "1000", 4 [pid 665] <... write resumed>) = 4 [pid 664] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 663] <... exit_group resumed>) = ? [pid 357] ioctl(3, LOOP_CLR_FD [pid 666] <... write resumed>) = 4 [pid 665] close(3 [pid 664] <... openat resumed>) = 3 [pid 357] <... ioctl resumed>) = 0 [pid 665] <... close resumed>) = 0 [pid 663] +++ exited with 0 +++ [pid 664] ioctl(3, BLKSECDISCARD, [0, 0] [pid 357] close(3 [pid 666] close(3 [pid 665] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 664] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=663, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] <... close resumed>) = 0 ./strace-static-x86_64: Process 667 attached [pid 666] <... close resumed>) = 0 [pid 665] <... openat resumed>) = 3 [pid 664] memfd_create("syzkaller", 0 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 667] set_robust_list(0x5555574d4660, 24 [pid 666] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 665] ioctl(3, BLKSECDISCARD, [0, 0] [pid 664] <... memfd_create resumed>) = 4 [pid 667] <... set_robust_list resumed>) = 0 [pid 666] <... openat resumed>) = 3 [pid 665] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 664] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 668 [pid 667] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 666] ioctl(3, BLKSECDISCARD, [0, 0] [pid 665] memfd_create("syzkaller", 0 [pid 664] <... mmap resumed>) = 0x7f1bc18a3000 [pid 667] <... prctl resumed>) = 0 [pid 666] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 665] <... memfd_create resumed>) = 4 [pid 665] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 667] setpgid(0, 0 [pid 666] memfd_create("syzkaller", 0 [pid 665] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 664] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 358] <... openat resumed>) = 3 [pid 667] <... setpgid resumed>) = 0 [pid 666] <... memfd_create resumed>) = 4 [pid 665] <... write resumed>) = 262144 [pid 664] <... write resumed>) = 262144 [pid 358] ioctl(3, LOOP_CLR_FD [pid 667] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 666] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 665] munmap(0x7f1bc18a3000, 138412032 [pid 664] munmap(0x7f1bc18a3000, 138412032 [pid 358] <... ioctl resumed>) = 0 [pid 667] <... openat resumed>) = 3 [pid 666] <... mmap resumed>) = 0x7f1bc18a3000 [pid 665] <... munmap resumed>) = 0 [pid 664] <... munmap resumed>) = 0 [pid 358] close(3 [pid 667] write(3, "1000", 4 [pid 665] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 358] <... close resumed>) = 0 [pid 665] <... openat resumed>) = 5 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 665] ioctl(5, LOOP_SET_FD, 4./strace-static-x86_64: Process 668 attached ) = -1 EBUSY (Device or resource busy) [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 669 [pid 668] set_robust_list(0x5555574d4660, 24 [pid 667] <... write resumed>) = 4 [pid 666] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 665] ioctl(5, LOOP_CLR_FD [pid 664] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 668] <... set_robust_list resumed>) = 0 [pid 667] close(3 [pid 665] <... ioctl resumed>) = 0 [pid 668] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 668] setpgid(0, 0) = 0 [pid 666] <... write resumed>) = 262144 [pid 664] <... openat resumed>) = 5 [pid 667] <... close resumed>) = 0 [pid 666] munmap(0x7f1bc18a3000, 138412032 [pid 667] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 664] ioctl(5, LOOP_SET_FD, 4 [pid 668] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 667] <... openat resumed>) = 3 [pid 666] <... munmap resumed>) = 0 [pid 664] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 668] <... openat resumed>) = 3 [pid 667] ioctl(3, BLKSECDISCARD, [0, 0] [pid 666] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 665] ioctl(5, LOOP_SET_FD, 4 [pid 664] ioctl(5, LOOP_CLR_FD [pid 668] write(3, "1000", 4 [pid 667] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 666] <... openat resumed>) = 5 [pid 665] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 664] <... ioctl resumed>) = 0 [pid 668] <... write resumed>) = 4 [pid 667] memfd_create("syzkaller", 0 [pid 666] ioctl(5, LOOP_SET_FD, 4 [pid 665] close(5 [pid 668] close(3 [pid 667] <... memfd_create resumed>) = 4 [pid 666] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 665] <... close resumed>) = 0 [pid 668] <... close resumed>) = 0 [pid 667] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 666] ioctl(5, LOOP_CLR_FD [pid 665] close(4./strace-static-x86_64: Process 669 attached [pid 668] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 667] <... mmap resumed>) = 0x7f1bc18a3000 [pid 666] <... ioctl resumed>) = 0 [pid 665] <... close resumed>) = 0 [pid 669] set_robust_list(0x5555574d4660, 24 [pid 668] <... openat resumed>) = 3 [pid 665] exit_group(0 [pid 669] <... set_robust_list resumed>) = 0 [pid 668] ioctl(3, BLKSECDISCARD, [0, 0] [pid 665] <... exit_group resumed>) = ? [pid 669] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 668] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 667] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 665] +++ exited with 0 +++ [pid 664] ioctl(5, LOOP_SET_FD, 4 [pid 669] <... prctl resumed>) = 0 [pid 668] memfd_create("syzkaller", 0 [pid 669] setpgid(0, 0 [pid 668] <... memfd_create resumed>) = 4 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=665, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 669] <... setpgid resumed>) = 0 [pid 668] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 669] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 668] <... mmap resumed>) = 0x7f1bc18a3000 [pid 667] <... write resumed>) = 262144 [pid 664] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] <... restart_syscall resumed>) = 0 [pid 669] <... openat resumed>) = 3 [pid 668] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 669] write(3, "1000", 4 [pid 668] <... write resumed>) = 262144 [pid 669] <... write resumed>) = 4 [pid 668] munmap(0x7f1bc18a3000, 138412032 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 669] close(3 [pid 668] <... munmap resumed>) = 0 [pid 361] <... openat resumed>) = 3 [pid 669] <... close resumed>) = 0 [pid 668] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 361] ioctl(3, LOOP_CLR_FD [pid 669] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 668] <... openat resumed>) = 5 [pid 361] <... ioctl resumed>) = 0 [pid 669] <... openat resumed>) = 3 [pid 668] ioctl(5, LOOP_SET_FD, 4 [pid 361] close(3 [pid 669] ioctl(3, BLKSECDISCARD, [0, 0] [pid 668] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] <... close resumed>) = 0 [pid 669] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 668] ioctl(5, LOOP_CLR_FD [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 669] memfd_create("syzkaller", 0 [pid 668] <... ioctl resumed>) = 0 [pid 669] <... memfd_create resumed>) = 4 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 671 [pid 669] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 667] munmap(0x7f1bc18a3000, 138412032 [pid 664] close(5 [pid 669] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 668] ioctl(5, LOOP_SET_FD, 4 [pid 667] <... munmap resumed>) = 0 [pid 666] ioctl(5, LOOP_SET_FD, 4 [pid 664] <... close resumed>) = 0 [pid 668] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 667] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 666] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 664] close(4 [pid 669] <... write resumed>) = 262144 [pid 668] close(5 [pid 667] <... openat resumed>) = 5 [pid 666] close(5 [pid 669] munmap(0x7f1bc18a3000, 138412032 [pid 668] <... close resumed>) = 0 [pid 669] <... munmap resumed>) = 0 [pid 668] close(4 [pid 667] ioctl(5, LOOP_SET_FD, 4 [pid 666] <... close resumed>) = 0 [pid 664] <... close resumed>) = 0 [pid 669] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 668] <... close resumed>) = 0 [pid 667] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 666] close(4 [pid 669] <... openat resumed>) = 5 [pid 668] exit_group(0 [pid 667] ioctl(5, LOOP_CLR_FD [pid 664] exit_group(0./strace-static-x86_64: Process 671 attached [pid 669] ioctl(5, LOOP_SET_FD, 4 [pid 668] <... exit_group resumed>) = ? [pid 671] set_robust_list(0x5555574d4660, 24 [pid 669] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 668] +++ exited with 0 +++ [pid 667] <... ioctl resumed>) = 0 [pid 666] <... close resumed>) = 0 [pid 664] <... exit_group resumed>) = ? [pid 671] <... set_robust_list resumed>) = 0 [pid 669] ioctl(5, LOOP_CLR_FD [pid 666] exit_group(0 [pid 671] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 669] <... ioctl resumed>) = 0 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=668, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 664] +++ exited with 0 +++ [pid 671] <... prctl resumed>) = 0 [pid 666] <... exit_group resumed>) = ? [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=664, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 671] setpgid(0, 0 [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 357] <... restart_syscall resumed>) = 0 [pid 671] <... setpgid resumed>) = 0 [pid 360] <... restart_syscall resumed>) = 0 [pid 671] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 666] +++ exited with 0 +++ [pid 671] <... openat resumed>) = 3 [pid 669] ioctl(5, LOOP_SET_FD, 4 [pid 667] ioctl(5, LOOP_SET_FD, 4 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=666, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 671] write(3, "1000", 4 [pid 669] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 667] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 357] <... openat resumed>) = 3 [pid 671] <... write resumed>) = 4 [pid 669] close(5 [pid 667] close(5 [pid 360] <... openat resumed>) = 3 [pid 357] ioctl(3, LOOP_CLR_FD [pid 671] close(3 [pid 669] <... close resumed>) = 0 [pid 667] <... close resumed>) = 0 [pid 360] ioctl(3, LOOP_CLR_FD [pid 357] <... ioctl resumed>) = 0 [pid 671] <... close resumed>) = 0 [pid 669] close(4 [pid 667] close(4 [pid 360] <... ioctl resumed>) = 0 [pid 357] close(3 [pid 671] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 669] <... close resumed>) = 0 [pid 360] close(3 [pid 357] <... close resumed>) = 0 [pid 671] <... openat resumed>) = 3 [pid 669] exit_group(0 [pid 360] <... close resumed>) = 0 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 671] ioctl(3, BLKSECDISCARD, [0, 0] [pid 669] <... exit_group resumed>) = ? [pid 667] <... close resumed>) = 0 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 671] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 669] +++ exited with 0 +++ [pid 667] exit_group(0 [pid 359] <... openat resumed>) = 3 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 672 [pid 671] memfd_create("syzkaller", 0 [pid 667] <... exit_group resumed>) = ? [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 673 [pid 359] ioctl(3, LOOP_CLR_FD [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=669, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 671] <... memfd_create resumed>) = 4 [pid 359] <... ioctl resumed>) = 0 [pid 671] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 359] close(3 [pid 671] <... mmap resumed>) = 0x7f1bc18a3000 [pid 667] +++ exited with 0 +++ [pid 359] <... close resumed>) = 0 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 671] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] <... openat resumed>) = 3 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=667, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 671] <... write resumed>) = 262144 [pid 358] ioctl(3, LOOP_CLR_FD [pid 671] munmap(0x7f1bc18a3000, 138412032 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 674 [pid 358] <... ioctl resumed>) = 0 [pid 671] <... munmap resumed>) = 0 [pid 358] close(3 [pid 671] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 358] <... close resumed>) = 0 [pid 671] <... openat resumed>) = 5 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 671] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 675 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 671] ioctl(5, LOOP_CLR_FD [pid 356] <... openat resumed>) = 3 [pid 671] <... ioctl resumed>) = 0 [pid 356] ioctl(3, LOOP_CLR_FD) = 0 [pid 356] close(3) = 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 674 attached ./strace-static-x86_64: Process 672 attached [pid 674] set_robust_list(0x5555574d4660, 24 [pid 672] set_robust_list(0x5555574d4660, 24 [pid 671] ioctl(5, LOOP_SET_FD, 4 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 676 [pid 674] <... set_robust_list resumed>) = 0 [pid 672] <... set_robust_list resumed>) = 0 [pid 671] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 674] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 672] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 671] close(5./strace-static-x86_64: Process 673 attached [pid 674] <... prctl resumed>) = 0 [pid 672] <... prctl resumed>) = 0 [pid 671] <... close resumed>) = 0 [pid 674] setpgid(0, 0 [pid 673] set_robust_list(0x5555574d4660, 24 [pid 672] setpgid(0, 0 [pid 671] close(4 [pid 674] <... setpgid resumed>) = 0 [pid 673] <... set_robust_list resumed>) = 0 [pid 672] <... setpgid resumed>) = 0 [pid 671] <... close resumed>) = 0 ./strace-static-x86_64: Process 676 attached [pid 674] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 673] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 672] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 671] exit_group(0 [pid 676] set_robust_list(0x5555574d4660, 24 [pid 674] <... openat resumed>) = 3 [pid 673] <... prctl resumed>) = 0 [pid 672] <... openat resumed>) = 3 [pid 671] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 675 attached [pid 676] <... set_robust_list resumed>) = 0 [pid 674] write(3, "1000", 4 [pid 673] setpgid(0, 0 [pid 672] write(3, "1000", 4 [pid 671] +++ exited with 0 +++ [pid 675] set_robust_list(0x5555574d4660, 24 [pid 673] <... setpgid resumed>) = 0 [pid 675] <... set_robust_list resumed>) = 0 [pid 673] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=671, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 675] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 674] <... write resumed>) = 4 [pid 673] <... openat resumed>) = 3 [pid 672] <... write resumed>) = 4 [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 675] <... prctl resumed>) = 0 [pid 674] close(3 [pid 673] write(3, "1000", 4 [pid 672] close(3 [pid 361] <... restart_syscall resumed>) = 0 [pid 675] setpgid(0, 0 [pid 674] <... close resumed>) = 0 [pid 673] <... write resumed>) = 4 [pid 672] <... close resumed>) = 0 [pid 675] <... setpgid resumed>) = 0 [pid 673] close(3 [pid 675] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 673] <... close resumed>) = 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 675] <... openat resumed>) = 3 [pid 673] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 361] <... openat resumed>) = 3 [pid 675] write(3, "1000", 4 [pid 673] <... openat resumed>) = 3 [pid 361] ioctl(3, LOOP_CLR_FD [pid 675] <... write resumed>) = 4 [pid 673] ioctl(3, BLKSECDISCARD, [0, 0] [pid 361] <... ioctl resumed>) = 0 [pid 675] close(3 [pid 674] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 673] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 672] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 361] close(3 [pid 676] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 675] <... close resumed>) = 0 [pid 674] <... openat resumed>) = 3 [pid 673] memfd_create("syzkaller", 0 [pid 672] <... openat resumed>) = 3 [pid 361] <... close resumed>) = 0 [pid 676] <... prctl resumed>) = 0 [pid 675] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 674] ioctl(3, BLKSECDISCARD, [0, 0] [pid 673] <... memfd_create resumed>) = 4 [pid 672] ioctl(3, BLKSECDISCARD, [0, 0] [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 676] setpgid(0, 0 [pid 675] <... openat resumed>) = 3 [pid 674] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 673] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 672] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 676] <... setpgid resumed>) = 0 [pid 675] ioctl(3, BLKSECDISCARD, [0, 0] [pid 674] memfd_create("syzkaller", 0 [pid 673] <... mmap resumed>) = 0x7f1bc18a3000 [pid 672] memfd_create("syzkaller", 0 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 677 [pid 676] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 675] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 674] <... memfd_create resumed>) = 4 [pid 673] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 672] <... memfd_create resumed>) = 4 [pid 676] <... openat resumed>) = 3 [pid 675] memfd_create("syzkaller", 0 [pid 674] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 673] <... write resumed>) = 262144 [pid 672] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 676] write(3, "1000", 4 [pid 675] <... memfd_create resumed>) = 4 [pid 674] <... mmap resumed>) = 0x7f1bc18a3000 [pid 673] munmap(0x7f1bc18a3000, 138412032 [pid 672] <... mmap resumed>) = 0x7f1bc18a3000 [pid 676] <... write resumed>) = 4 [pid 675] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 673] <... munmap resumed>) = 0 [pid 675] <... mmap resumed>) = 0x7f1bc18a3000 [pid 673] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 675] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 674] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 676] close(3 [pid 675] <... write resumed>) = 262144 [pid 674] <... write resumed>) = 262144 [pid 673] <... openat resumed>) = 5 [pid 672] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 677 attached [pid 676] <... close resumed>) = 0 [pid 675] munmap(0x7f1bc18a3000, 138412032 [pid 674] munmap(0x7f1bc18a3000, 138412032 [pid 673] ioctl(5, LOOP_SET_FD, 4 [pid 677] set_robust_list(0x5555574d4660, 24 [pid 675] <... munmap resumed>) = 0 [pid 673] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 677] <... set_robust_list resumed>) = 0 [pid 676] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 675] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 673] ioctl(5, LOOP_CLR_FD [pid 672] <... write resumed>) = 262144 [pid 677] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 676] <... openat resumed>) = 3 [pid 675] <... openat resumed>) = 5 [pid 674] <... munmap resumed>) = 0 [pid 673] <... ioctl resumed>) = 0 [pid 672] munmap(0x7f1bc18a3000, 138412032 [pid 677] <... prctl resumed>) = 0 [pid 676] ioctl(3, BLKSECDISCARD, [0, 0] [pid 675] ioctl(5, LOOP_SET_FD, 4 [pid 674] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 677] setpgid(0, 0 [pid 676] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 675] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 674] <... openat resumed>) = 5 [pid 672] <... munmap resumed>) = 0 [pid 677] <... setpgid resumed>) = 0 [pid 676] memfd_create("syzkaller", 0 [pid 675] ioctl(5, LOOP_CLR_FD [pid 674] ioctl(5, LOOP_SET_FD, 4 [pid 672] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 677] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 676] <... memfd_create resumed>) = 4 [pid 675] <... ioctl resumed>) = 0 [pid 674] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 672] <... openat resumed>) = 5 [pid 677] <... openat resumed>) = 3 [pid 676] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 674] ioctl(5, LOOP_CLR_FD [pid 673] ioctl(5, LOOP_SET_FD, 4 [pid 672] ioctl(5, LOOP_SET_FD, 4 [pid 677] write(3, "1000", 4 [pid 676] <... mmap resumed>) = 0x7f1bc18a3000 [pid 674] <... ioctl resumed>) = 0 [pid 673] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 672] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 677] <... write resumed>) = 4 [pid 673] close(5 [pid 677] close(3 [pid 673] <... close resumed>) = 0 [pid 677] <... close resumed>) = 0 [pid 675] ioctl(5, LOOP_SET_FD, 4 [pid 673] close(4 [pid 677] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 676] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 675] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 673] <... close resumed>) = 0 [pid 672] ioctl(5, LOOP_CLR_FD [pid 677] <... openat resumed>) = 3 [pid 675] close(5 [pid 673] exit_group(0 [pid 677] ioctl(3, BLKSECDISCARD, [0, 0] [pid 675] <... close resumed>) = 0 [pid 673] <... exit_group resumed>) = ? [pid 677] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 676] <... write resumed>) = 262144 [pid 675] close(4 [pid 673] +++ exited with 0 +++ [pid 672] <... ioctl resumed>) = 0 [pid 677] memfd_create("syzkaller", 0 [pid 676] munmap(0x7f1bc18a3000, 138412032 [pid 675] <... close resumed>) = 0 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=673, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 677] <... memfd_create resumed>) = 4 [pid 676] <... munmap resumed>) = 0 [pid 675] exit_group(0 [pid 674] ioctl(5, LOOP_SET_FD, 4 [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 677] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 676] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 675] <... exit_group resumed>) = ? [pid 674] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] <... restart_syscall resumed>) = 0 [pid 677] <... mmap resumed>) = 0x7f1bc18a3000 [pid 676] <... openat resumed>) = 5 [pid 675] +++ exited with 0 +++ [pid 674] close(5 [pid 677] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 676] ioctl(5, LOOP_SET_FD, 4 [pid 674] <... close resumed>) = 0 [pid 672] ioctl(5, LOOP_SET_FD, 4 [pid 677] <... write resumed>) = 262144 [pid 676] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 674] close(4 [pid 672] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=675, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 677] munmap(0x7f1bc18a3000, 138412032 [pid 676] ioctl(5, LOOP_CLR_FD [pid 360] <... openat resumed>) = 3 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 677] <... munmap resumed>) = 0 [pid 676] <... ioctl resumed>) = 0 [pid 674] <... close resumed>) = 0 [pid 672] close(5 [pid 360] ioctl(3, LOOP_CLR_FD [pid 358] <... openat resumed>) = 3 [pid 677] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 674] exit_group(0 [pid 672] <... close resumed>) = 0 [pid 360] <... ioctl resumed>) = 0 [pid 358] ioctl(3, LOOP_CLR_FD [pid 677] <... openat resumed>) = 5 [pid 674] <... exit_group resumed>) = ? [pid 672] close(4 [pid 360] close(3 [pid 358] <... ioctl resumed>) = 0 [pid 677] ioctl(5, LOOP_SET_FD, 4 [pid 360] <... close resumed>) = 0 [pid 358] close(3 [pid 677] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] <... close resumed>) = 0 [pid 677] ioctl(5, LOOP_CLR_FD [pid 674] +++ exited with 0 +++ [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 677] <... ioctl resumed>) = 0 [pid 672] <... close resumed>) = 0 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 678 [pid 676] ioctl(5, LOOP_SET_FD, 4 [pid 672] exit_group(0 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=674, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 679 [pid 676] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 672] <... exit_group resumed>) = ? [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 676] close(5 [pid 359] <... openat resumed>) = 3 [pid 677] ioctl(5, LOOP_SET_FD, 4 [pid 672] +++ exited with 0 +++ [pid 359] ioctl(3, LOOP_CLR_FD [pid 677] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] <... ioctl resumed>) = 0 [pid 677] close(5 [pid 676] <... close resumed>) = 0 [pid 359] close(3 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=672, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 677] <... close resumed>) = 0 [pid 676] close(4 [pid 359] <... close resumed>) = 0 [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 677] close(4 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 677] <... close resumed>) = 0 [pid 676] <... close resumed>) = 0 [pid 357] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 679 attached [pid 677] exit_group(0 [pid 676] exit_group(0 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 680 [pid 679] set_robust_list(0x5555574d4660, 24 [pid 677] <... exit_group resumed>) = ? [pid 676] <... exit_group resumed>) = ? [pid 677] +++ exited with 0 +++ [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 676] +++ exited with 0 +++ [pid 679] <... set_robust_list resumed>) = 0 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=677, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] ioctl(3, LOOP_CLR_FD [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 357] <... ioctl resumed>) = 0 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=676, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 361] <... restart_syscall resumed>) = 0 [pid 357] close(3 [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 357] <... close resumed>) = 0 [pid 356] <... restart_syscall resumed>) = 0 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 681 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 678 attached [pid 361] ioctl(3, LOOP_CLR_FD [pid 356] <... openat resumed>) = 3 [pid 678] set_robust_list(0x5555574d4660, 24 [pid 361] <... ioctl resumed>) = 0 [pid 356] ioctl(3, LOOP_CLR_FD [pid 678] <... set_robust_list resumed>) = 0 [pid 361] close(3 [pid 356] <... ioctl resumed>) = 0 [pid 678] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 361] <... close resumed>) = 0 [pid 356] close(3./strace-static-x86_64: Process 680 attached [pid 679] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 678] <... prctl resumed>) = 0 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] <... close resumed>) = 0 [pid 680] set_robust_list(0x5555574d4660, 24 [pid 679] <... prctl resumed>) = 0 [pid 678] setpgid(0, 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 680] <... set_robust_list resumed>) = 0 [pid 679] setpgid(0, 0 [pid 678] <... setpgid resumed>) = 0 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 682 [pid 680] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 679] <... setpgid resumed>) = 0 [pid 678] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 683 [pid 680] <... prctl resumed>) = 0 [pid 679] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 678] <... openat resumed>) = 3 [pid 680] setpgid(0, 0 [pid 678] write(3, "1000", 4./strace-static-x86_64: Process 682 attached [pid 680] <... setpgid resumed>) = 0 [pid 679] <... openat resumed>) = 3 [pid 678] <... write resumed>) = 4 [pid 682] set_robust_list(0x5555574d4660, 24 [pid 680] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 679] write(3, "1000", 4 [pid 678] close(3 [pid 682] <... set_robust_list resumed>) = 0 [pid 680] <... openat resumed>) = 3 [pid 679] <... write resumed>) = 4 [pid 678] <... close resumed>) = 0 [pid 682] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 680] write(3, "1000", 4 [pid 679] close(3 [pid 678] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT./strace-static-x86_64: Process 681 attached [pid 682] <... prctl resumed>) = 0 [pid 680] <... write resumed>) = 4 [pid 679] <... close resumed>) = 0 [pid 678] <... openat resumed>) = 3 ./strace-static-x86_64: Process 683 attached [pid 682] setpgid(0, 0 [pid 681] set_robust_list(0x5555574d4660, 24 [pid 680] close(3 [pid 679] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 678] ioctl(3, BLKSECDISCARD, [0, 0] [pid 683] set_robust_list(0x5555574d4660, 24 [pid 682] <... setpgid resumed>) = 0 [pid 681] <... set_robust_list resumed>) = 0 [pid 680] <... close resumed>) = 0 [pid 679] <... openat resumed>) = 3 [pid 678] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 683] <... set_robust_list resumed>) = 0 [pid 682] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 681] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 680] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 679] ioctl(3, BLKSECDISCARD, [0, 0] [pid 678] memfd_create("syzkaller", 0 [pid 683] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 682] <... openat resumed>) = 3 [pid 681] <... prctl resumed>) = 0 [pid 680] <... openat resumed>) = 3 [pid 679] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 678] <... memfd_create resumed>) = 4 [pid 683] <... prctl resumed>) = 0 [pid 682] write(3, "1000", 4 [pid 681] setpgid(0, 0 [pid 680] ioctl(3, BLKSECDISCARD, [0, 0] [pid 679] memfd_create("syzkaller", 0 [pid 678] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 683] setpgid(0, 0 [pid 682] <... write resumed>) = 4 [pid 681] <... setpgid resumed>) = 0 [pid 680] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 679] <... memfd_create resumed>) = 4 [pid 678] <... mmap resumed>) = 0x7f1bc18a3000 [pid 683] <... setpgid resumed>) = 0 [pid 682] close(3 [pid 681] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 680] memfd_create("syzkaller", 0 [pid 679] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 678] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 681] <... openat resumed>) = 3 [pid 678] <... write resumed>) = 262144 [pid 681] write(3, "1000", 4 [pid 678] munmap(0x7f1bc18a3000, 138412032 [pid 681] <... write resumed>) = 4 [pid 678] <... munmap resumed>) = 0 [pid 681] close(3 [pid 678] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 681] <... close resumed>) = 0 [pid 678] <... openat resumed>) = 5 [pid 681] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 678] ioctl(5, LOOP_SET_FD, 4 [pid 681] <... openat resumed>) = 3 [pid 678] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 681] ioctl(3, BLKSECDISCARD, [0, 0] [pid 678] ioctl(5, LOOP_CLR_FD [pid 681] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 678] <... ioctl resumed>) = 0 [pid 681] memfd_create("syzkaller", 0) = 4 [pid 681] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 683] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 682] <... close resumed>) = 0 [pid 681] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 680] <... memfd_create resumed>) = 4 [pid 679] <... mmap resumed>) = 0x7f1bc18a3000 [pid 682] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 681] <... write resumed>) = 262144 [pid 680] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 678] ioctl(5, LOOP_SET_FD, 4 [pid 682] <... openat resumed>) = 3 [pid 681] munmap(0x7f1bc18a3000, 138412032 [pid 680] <... mmap resumed>) = 0x7f1bc18a3000 [pid 679] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 678] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 683] <... openat resumed>) = 3 [pid 682] ioctl(3, BLKSECDISCARD, [0, 0] [pid 681] <... munmap resumed>) = 0 [pid 678] close(5 [pid 681] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 678] <... close resumed>) = 0 [pid 681] <... openat resumed>) = 5 [pid 678] close(4 [pid 681] ioctl(5, LOOP_SET_FD, 4 [pid 680] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 678] <... close resumed>) = 0 [pid 681] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 679] <... write resumed>) = 262144 [pid 678] exit_group(0 [pid 681] ioctl(5, LOOP_CLR_FD [pid 678] <... exit_group resumed>) = ? [pid 683] write(3, "1000", 4 [pid 682] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 681] <... ioctl resumed>) = 0 [pid 680] <... write resumed>) = 262144 [pid 679] munmap(0x7f1bc18a3000, 138412032 [pid 678] +++ exited with 0 +++ [pid 683] <... write resumed>) = 4 [pid 682] memfd_create("syzkaller", 0 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=678, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 679] <... munmap resumed>) = 0 [pid 683] close(3 [pid 682] <... memfd_create resumed>) = 4 [pid 680] munmap(0x7f1bc18a3000, 138412032 [pid 679] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 683] <... close resumed>) = 0 [pid 682] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 680] <... munmap resumed>) = 0 [pid 683] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 682] <... mmap resumed>) = 0x7f1bc18a3000 [pid 680] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 679] <... openat resumed>) = 5 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 683] <... openat resumed>) = 3 [pid 360] <... openat resumed>) = 3 [pid 681] ioctl(5, LOOP_SET_FD, 4 [pid 360] ioctl(3, LOOP_CLR_FD [pid 683] ioctl(3, BLKSECDISCARD, [0, 0] [pid 682] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 681] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 680] <... openat resumed>) = 5 [pid 679] ioctl(5, LOOP_SET_FD, 4 [pid 360] <... ioctl resumed>) = 0 [pid 683] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 682] <... write resumed>) = 262144 [pid 681] close(5 [pid 680] ioctl(5, LOOP_SET_FD, 4 [pid 679] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] close(3 [pid 683] memfd_create("syzkaller", 0 [pid 682] munmap(0x7f1bc18a3000, 138412032 [pid 681] <... close resumed>) = 0 [pid 680] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 679] ioctl(5, LOOP_CLR_FD [pid 683] <... memfd_create resumed>) = 4 [pid 682] <... munmap resumed>) = 0 [pid 681] close(4 [pid 680] ioctl(5, LOOP_CLR_FD [pid 679] <... ioctl resumed>) = 0 [pid 360] <... close resumed>) = 0 [pid 683] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 682] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 680] <... ioctl resumed>) = 0 [pid 683] <... mmap resumed>) = 0x7f1bc18a3000 [pid 682] <... openat resumed>) = 5 [pid 683] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 682] ioctl(5, LOOP_SET_FD, 4 [pid 681] <... close resumed>) = 0 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 683] <... write resumed>) = 262144 [pid 682] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 681] exit_group(0 [pid 679] ioctl(5, LOOP_SET_FD, 4 [pid 683] munmap(0x7f1bc18a3000, 138412032 [pid 682] ioctl(5, LOOP_CLR_FD [pid 680] ioctl(5, LOOP_SET_FD, 4 [pid 679] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 683] <... munmap resumed>) = 0 [pid 682] <... ioctl resumed>) = 0 [pid 681] <... exit_group resumed>) = ? [pid 680] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 679] close(5 [pid 683] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 680] close(5 [pid 679] <... close resumed>) = 0 [pid 683] <... openat resumed>) = 5 [pid 680] <... close resumed>) = 0 [pid 679] close(4 [pid 683] ioctl(5, LOOP_SET_FD, 4 [pid 681] +++ exited with 0 +++ [pid 680] close(4 [pid 679] <... close resumed>) = 0 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 684 [pid 683] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 682] ioctl(5, LOOP_SET_FD, 4 [pid 680] <... close resumed>) = 0 [pid 679] exit_group(0 [pid 683] ioctl(5, LOOP_CLR_FD [pid 682] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 680] exit_group(0 [pid 679] <... exit_group resumed>) = ? [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=681, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 683] <... ioctl resumed>) = 0 [pid 682] close(5 [pid 680] <... exit_group resumed>) = ? [pid 679] +++ exited with 0 +++ [pid 682] <... close resumed>) = 0 [pid 680] +++ exited with 0 +++ [pid 682] close(4 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=680, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=679, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 682] <... close resumed>) = 0 ./strace-static-x86_64: Process 684 attached [pid 683] ioctl(5, LOOP_SET_FD, 4 [pid 682] exit_group(0 [pid 684] set_robust_list(0x5555574d4660, 24 [pid 683] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 682] <... exit_group resumed>) = ? [pid 684] <... set_robust_list resumed>) = 0 [pid 683] close(5 [pid 682] +++ exited with 0 +++ [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 684] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 683] <... close resumed>) = 0 [pid 684] <... prctl resumed>) = 0 [pid 683] close(4 [pid 684] setpgid(0, 0 [pid 683] <... close resumed>) = 0 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=682, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] <... openat resumed>) = 3 [pid 684] <... setpgid resumed>) = 0 [pid 683] exit_group(0 [pid 684] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 683] <... exit_group resumed>) = ? [pid 684] <... openat resumed>) = 3 [pid 683] +++ exited with 0 +++ [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 357] ioctl(3, LOOP_CLR_FD [pid 684] write(3, "1000", 4) = 4 [pid 684] close(3) = 0 [pid 684] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 361] <... restart_syscall resumed>) = 0 [pid 359] <... openat resumed>) = 3 [pid 358] <... openat resumed>) = 3 [pid 357] <... ioctl resumed>) = 0 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=683, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 684] <... openat resumed>) = 3 [pid 684] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 684] memfd_create("syzkaller", 0 [pid 359] ioctl(3, LOOP_CLR_FD [pid 358] ioctl(3, LOOP_CLR_FD [pid 357] close(3 [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 684] <... memfd_create resumed>) = 4 [pid 684] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 684] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 359] <... ioctl resumed>) = 0 [pid 358] <... ioctl resumed>) = 0 [pid 357] <... close resumed>) = 0 [pid 356] <... restart_syscall resumed>) = 0 [pid 684] <... write resumed>) = 262144 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 359] close(3 [pid 358] close(3 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 684] munmap(0x7f1bc18a3000, 138412032) = 0 [pid 361] <... openat resumed>) = 3 [pid 359] <... close resumed>) = 0 [pid 358] <... close resumed>) = 0 [pid 684] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 5 [pid 684] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 361] ioctl(3, LOOP_CLR_FD [pid 684] ioctl(5, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 685 attached [pid 685] set_robust_list(0x5555574d4660, 24) = 0 [pid 685] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 685] setpgid(0, 0) = 0 [pid 685] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 361] <... ioctl resumed>) = 0 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 687 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 686 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 685 [pid 684] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 684] close(5) = 0 [pid 684] close(4) = 0 [pid 361] close(3 [pid 356] <... openat resumed>) = 3 [pid 684] exit_group(0) = ? [pid 684] +++ exited with 0 +++ [pid 361] <... close resumed>) = 0 [pid 356] ioctl(3, LOOP_CLR_FD [pid 685] <... openat resumed>) = 3 [pid 685] write(3, "1000", 4) = 4 [pid 685] close(3) = 0 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] <... ioctl resumed>) = 0 [pid 685] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 356] close(3 [pid 685] <... openat resumed>) = 3 [pid 685] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 356] <... close resumed>) = 0 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 688 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=684, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 685] memfd_create("syzkaller", 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 685] <... memfd_create resumed>) = 4 [pid 685] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 360] <... openat resumed>) = 3 [pid 360] ioctl(3, LOOP_CLR_FD [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 689 [pid 360] <... ioctl resumed>) = 0 [pid 360] close(3) = 0 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x5555574d4650) = 690 ./strace-static-x86_64: Process 687 attached ./strace-static-x86_64: Process 686 attached [pid 687] set_robust_list(0x5555574d4660, 24 [pid 686] set_robust_list(0x5555574d4660, 24 [pid 687] <... set_robust_list resumed>) = 0 [pid 686] <... set_robust_list resumed>) = 0 [pid 687] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 687] setpgid(0, 0 [pid 686] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 685] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 686] <... prctl resumed>) = 0 [pid 687] <... setpgid resumed>) = 0 [pid 686] setpgid(0, 0 [pid 687] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 686] <... setpgid resumed>) = 0 [pid 686] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 687] <... openat resumed>) = 3 [pid 686] <... openat resumed>) = 3 [pid 687] write(3, "1000", 4 [pid 686] write(3, "1000", 4 [pid 687] <... write resumed>) = 4 [pid 686] <... write resumed>) = 4 [pid 687] close(3 [pid 686] close(3 [pid 687] <... close resumed>) = 0 [pid 686] <... close resumed>) = 0 [pid 687] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 686] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 687] <... openat resumed>) = 3 [pid 686] <... openat resumed>) = 3 [pid 687] ioctl(3, BLKSECDISCARD, [0, 0] [pid 686] ioctl(3, BLKSECDISCARD, [0, 0] [pid 687] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 686] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 687] memfd_create("syzkaller", 0 [pid 686] memfd_create("syzkaller", 0) = 4 [pid 687] <... memfd_create resumed>) = 4 [pid 687] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 686] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 687] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 690 attached ./strace-static-x86_64: Process 688 attached [pid 685] <... write resumed>) = 262144 [pid 690] set_robust_list(0x5555574d4660, 24 [pid 688] set_robust_list(0x5555574d4660, 24 [pid 686] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 689 attached [pid 689] set_robust_list(0x5555574d4660, 24) = 0 [pid 689] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 689] setpgid(0, 0) = 0 [pid 689] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 689] write(3, "1000", 4) = 4 [pid 689] close(3) = 0 [pid 689] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 689] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 689] memfd_create("syzkaller", 0 [pid 685] munmap(0x7f1bc18a3000, 138412032 [pid 689] <... memfd_create resumed>) = 4 [pid 685] <... munmap resumed>) = 0 [pid 689] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 689] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 685] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 5 [pid 685] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 685] ioctl(5, LOOP_CLR_FD) = 0 [pid 686] <... write resumed>) = 262144 [pid 690] <... set_robust_list resumed>) = 0 [pid 688] <... set_robust_list resumed>) = 0 [pid 687] <... write resumed>) = 262144 [pid 685] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 685] close(5) = 0 [pid 685] close(4 [pid 690] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 688] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 685] <... close resumed>) = 0 [pid 687] munmap(0x7f1bc18a3000, 138412032 [pid 686] munmap(0x7f1bc18a3000, 138412032 [pid 685] exit_group(0 [pid 690] <... prctl resumed>) = 0 [pid 689] <... write resumed>) = 262144 [pid 688] <... prctl resumed>) = 0 [pid 687] <... munmap resumed>) = 0 [pid 686] <... munmap resumed>) = 0 [pid 685] <... exit_group resumed>) = ? [pid 690] setpgid(0, 0 [pid 688] setpgid(0, 0 [pid 687] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 686] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 685] +++ exited with 0 +++ [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=685, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 687] <... openat resumed>) = 5 [pid 686] <... openat resumed>) = 5 [pid 357] <... openat resumed>) = 3 [pid 687] ioctl(5, LOOP_SET_FD, 4 [pid 686] ioctl(5, LOOP_SET_FD, 4 [pid 357] ioctl(3, LOOP_CLR_FD [pid 687] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 686] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 357] <... ioctl resumed>) = 0 [pid 687] ioctl(5, LOOP_CLR_FD [pid 686] ioctl(5, LOOP_CLR_FD [pid 689] munmap(0x7f1bc18a3000, 138412032 [pid 687] <... ioctl resumed>) = 0 [pid 686] <... ioctl resumed>) = 0 [pid 689] <... munmap resumed>) = 0 [pid 357] close(3) = 0 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 689] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 5 [pid 689] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 689] ioctl(5, LOOP_CLR_FD) = 0 [pid 690] <... setpgid resumed>) = 0 [pid 688] <... setpgid resumed>) = 0 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 691 [pid 687] ioctl(5, LOOP_SET_FD, 4 [pid 686] ioctl(5, LOOP_SET_FD, 4 [pid 688] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 691 attached [pid 690] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 688] <... openat resumed>) = 3 [pid 687] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 686] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 691] set_robust_list(0x5555574d4660, 24 [pid 690] <... openat resumed>) = 3 [pid 689] ioctl(5, LOOP_SET_FD, 4 [pid 688] write(3, "1000", 4 [pid 687] close(5 [pid 686] close(5 [pid 691] <... set_robust_list resumed>) = 0 [pid 690] write(3, "1000", 4 [pid 689] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 688] <... write resumed>) = 4 [pid 687] <... close resumed>) = 0 [pid 686] <... close resumed>) = 0 [pid 691] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 690] <... write resumed>) = 4 [pid 689] close(5 [pid 688] close(3 [pid 687] close(4 [pid 686] close(4 [pid 691] <... prctl resumed>) = 0 [pid 690] close(3 [pid 689] <... close resumed>) = 0 [pid 688] <... close resumed>) = 0 [pid 691] setpgid(0, 0 [pid 690] <... close resumed>) = 0 [pid 688] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 687] <... close resumed>) = 0 [pid 691] <... setpgid resumed>) = 0 [pid 690] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 689] close(4 [pid 688] <... openat resumed>) = 3 [pid 687] exit_group(0 [pid 686] <... close resumed>) = 0 [pid 691] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 690] <... openat resumed>) = 3 [pid 688] ioctl(3, BLKSECDISCARD, [0, 0] [pid 691] <... openat resumed>) = 3 [pid 690] ioctl(3, BLKSECDISCARD, [0, 0] [pid 689] <... close resumed>) = 0 [pid 688] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 687] <... exit_group resumed>) = ? [pid 686] exit_group(0 [pid 691] write(3, "1000", 4 [pid 690] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 689] exit_group(0 [pid 688] memfd_create("syzkaller", 0 [pid 691] <... write resumed>) = 4 [pid 690] memfd_create("syzkaller", 0 [pid 689] <... exit_group resumed>) = ? [pid 688] <... memfd_create resumed>) = 4 [pid 687] +++ exited with 0 +++ [pid 686] <... exit_group resumed>) = ? [pid 691] close(3 [pid 690] <... memfd_create resumed>) = 4 [pid 688] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=687, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 691] <... close resumed>) = 0 [pid 690] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 689] +++ exited with 0 +++ [pid 688] <... mmap resumed>) = 0x7f1bc18a3000 [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 691] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 690] <... mmap resumed>) = 0x7f1bc18a3000 [pid 688] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 686] +++ exited with 0 +++ [pid 359] <... restart_syscall resumed>) = 0 [pid 691] <... openat resumed>) = 3 [pid 690] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 688] <... write resumed>) = 262144 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=686, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=689, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 691] ioctl(3, BLKSECDISCARD, [0, 0] [pid 690] <... write resumed>) = 262144 [pid 688] munmap(0x7f1bc18a3000, 138412032 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 691] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 690] munmap(0x7f1bc18a3000, 138412032 [pid 688] <... munmap resumed>) = 0 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 356] <... openat resumed>) = 3 [pid 691] memfd_create("syzkaller", 0 [pid 690] <... munmap resumed>) = 0 [pid 688] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 359] <... openat resumed>) = 3 [pid 356] ioctl(3, LOOP_CLR_FD [pid 691] <... memfd_create resumed>) = 4 [pid 690] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 688] <... openat resumed>) = 5 [pid 359] ioctl(3, LOOP_CLR_FD [pid 356] <... ioctl resumed>) = 0 [pid 691] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 690] <... openat resumed>) = 5 [pid 688] ioctl(5, LOOP_SET_FD, 4 [pid 359] <... ioctl resumed>) = 0 [pid 356] close(3 [pid 691] <... mmap resumed>) = 0x7f1bc18a3000 [pid 690] ioctl(5, LOOP_SET_FD, 4 [pid 688] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] close(3 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 356] <... close resumed>) = 0 [pid 691] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 690] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 688] ioctl(5, LOOP_CLR_FD [pid 359] <... close resumed>) = 0 [pid 358] <... openat resumed>) = 3 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 691] <... write resumed>) = 262144 [pid 690] ioctl(5, LOOP_CLR_FD [pid 688] <... ioctl resumed>) = 0 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 692 attached [pid 691] munmap(0x7f1bc18a3000, 138412032 [pid 690] <... ioctl resumed>) = 0 [pid 358] <... ioctl resumed>) = 0 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 692 [pid 692] set_robust_list(0x5555574d4660, 24 [pid 691] <... munmap resumed>) = 0 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 693 [pid 358] close(3 [pid 692] <... set_robust_list resumed>) = 0 [pid 691] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 358] <... close resumed>) = 0 [pid 692] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 691] <... openat resumed>) = 5 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 692] <... prctl resumed>) = 0 [pid 691] ioctl(5, LOOP_SET_FD, 4 [pid 688] ioctl(5, LOOP_SET_FD, 4 [pid 692] setpgid(0, 0 [pid 691] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 690] ioctl(5, LOOP_SET_FD, 4 [pid 688] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 694 [pid 692] <... setpgid resumed>) = 0 [pid 691] ioctl(5, LOOP_CLR_FD [pid 690] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 688] close(5 [pid 692] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 691] <... ioctl resumed>) = 0 [pid 690] close(5 [pid 688] <... close resumed>) = 0 [pid 692] <... openat resumed>) = 3 [pid 690] <... close resumed>) = 0 [pid 688] close(4./strace-static-x86_64: Process 694 attached [pid 692] write(3, "1000", 4 [pid 690] close(4 [pid 688] <... close resumed>) = 0 [pid 694] set_robust_list(0x5555574d4660, 24 [pid 692] <... write resumed>) = 4 [pid 691] ioctl(5, LOOP_SET_FD, 4 [pid 690] <... close resumed>) = 0 [pid 688] exit_group(0./strace-static-x86_64: Process 693 attached [pid 694] <... set_robust_list resumed>) = 0 [pid 692] close(3 [pid 691] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 690] exit_group(0 [pid 688] <... exit_group resumed>) = ? [pid 694] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 693] set_robust_list(0x5555574d4660, 24 [pid 692] <... close resumed>) = 0 [pid 691] close(5 [pid 690] <... exit_group resumed>) = ? [pid 688] +++ exited with 0 +++ [pid 694] <... prctl resumed>) = 0 [pid 693] <... set_robust_list resumed>) = 0 [pid 692] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 691] <... close resumed>) = 0 [pid 690] +++ exited with 0 +++ [pid 694] setpgid(0, 0 [pid 693] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 692] <... openat resumed>) = 3 [pid 691] close(4 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=688, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 694] <... setpgid resumed>) = 0 [pid 693] <... prctl resumed>) = 0 [pid 692] ioctl(3, BLKSECDISCARD, [0, 0] [pid 691] <... close resumed>) = 0 [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=690, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 694] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 693] setpgid(0, 0 [pid 692] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 691] exit_group(0 [pid 361] <... restart_syscall resumed>) = 0 [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 694] <... openat resumed>) = 3 [pid 693] <... setpgid resumed>) = 0 [pid 692] memfd_create("syzkaller", 0 [pid 691] <... exit_group resumed>) = ? [pid 360] <... restart_syscall resumed>) = 0 [pid 694] write(3, "1000", 4 [pid 693] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 692] <... memfd_create resumed>) = 4 [pid 691] +++ exited with 0 +++ [pid 694] <... write resumed>) = 4 [pid 693] <... openat resumed>) = 3 [pid 692] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 694] close(3 [pid 693] write(3, "1000", 4 [pid 692] <... mmap resumed>) = 0x7f1bc18a3000 [pid 361] <... openat resumed>) = 3 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=691, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 694] <... close resumed>) = 0 [pid 693] <... write resumed>) = 4 [pid 361] ioctl(3, LOOP_CLR_FD [pid 360] <... openat resumed>) = 3 [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 361] <... ioctl resumed>) = 0 [pid 360] ioctl(3, LOOP_CLR_FD [pid 357] <... restart_syscall resumed>) = 0 [pid 361] close(3 [pid 360] <... ioctl resumed>) = 0 [pid 361] <... close resumed>) = 0 [pid 360] close(3 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 360] <... close resumed>) = 0 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 694] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 693] close(3 [pid 692] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 357] <... openat resumed>) = 3 [pid 694] <... openat resumed>) = 3 [pid 693] <... close resumed>) = 0 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 695 [pid 357] ioctl(3, LOOP_CLR_FD [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 696 [pid 357] <... ioctl resumed>) = 0 [pid 694] ioctl(3, BLKSECDISCARD, [0, 0] [pid 693] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 692] <... write resumed>) = 262144 [pid 357] close(3 [pid 694] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 693] <... openat resumed>) = 3 [pid 692] munmap(0x7f1bc18a3000, 138412032 [pid 357] <... close resumed>) = 0 [pid 694] memfd_create("syzkaller", 0 [pid 693] ioctl(3, BLKSECDISCARD, [0, 0] [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 694] <... memfd_create resumed>) = 4 [pid 693] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 692] <... munmap resumed>) = 0 [pid 694] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 693] memfd_create("syzkaller", 0 [pid 692] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 697 [pid 694] <... mmap resumed>) = 0x7f1bc18a3000 [pid 693] <... memfd_create resumed>) = 4 [pid 692] <... openat resumed>) = 5 ./strace-static-x86_64: Process 696 attached [pid 696] set_robust_list(0x5555574d4660, 24) = 0 [pid 696] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 696] setpgid(0, 0 [pid 694] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 693] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 692] ioctl(5, LOOP_SET_FD, 4 [pid 696] <... setpgid resumed>) = 0 [pid 696] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 694] <... write resumed>) = 262144 [pid 693] <... mmap resumed>) = 0x7f1bc18a3000 [pid 692] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 694] munmap(0x7f1bc18a3000, 138412032 [pid 696] write(3, "1000", 4) = 4 [pid 696] close(3) = 0 [pid 696] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 693] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 692] ioctl(5, LOOP_CLR_FD [pid 696] <... openat resumed>) = 3 [pid 694] <... munmap resumed>) = 0 [pid 692] <... ioctl resumed>) = 0 [pid 696] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 696] memfd_create("syzkaller", 0) = 4 [pid 693] <... write resumed>) = 262144 [pid 696] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 694] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 693] munmap(0x7f1bc18a3000, 138412032 [pid 696] <... mmap resumed>) = 0x7f1bc18a3000 [pid 694] <... openat resumed>) = 5 ./strace-static-x86_64: Process 697 attached ./strace-static-x86_64: Process 695 attached [pid 694] ioctl(5, LOOP_SET_FD, 4 [pid 693] <... munmap resumed>) = 0 [pid 697] set_robust_list(0x5555574d4660, 24 [pid 695] set_robust_list(0x5555574d4660, 24 [pid 694] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 693] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 692] ioctl(5, LOOP_SET_FD, 4 [pid 697] <... set_robust_list resumed>) = 0 [pid 695] <... set_robust_list resumed>) = 0 [pid 694] ioctl(5, LOOP_CLR_FD [pid 693] <... openat resumed>) = 5 [pid 692] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 697] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 695] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 694] <... ioctl resumed>) = 0 [pid 693] ioctl(5, LOOP_SET_FD, 4 [pid 692] close(5 [pid 697] <... prctl resumed>) = 0 [pid 695] <... prctl resumed>) = 0 [pid 693] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 692] <... close resumed>) = 0 [pid 697] setpgid(0, 0 [pid 695] setpgid(0, 0 [pid 693] ioctl(5, LOOP_CLR_FD [pid 692] close(4 [pid 697] <... setpgid resumed>) = 0 [pid 696] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 695] <... setpgid resumed>) = 0 [pid 693] <... ioctl resumed>) = 0 [pid 692] <... close resumed>) = 0 [pid 697] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 695] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 694] ioctl(5, LOOP_SET_FD, 4 [pid 692] exit_group(0 [pid 697] write(3, "1000", 4 [pid 695] <... openat resumed>) = 3 [pid 694] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 692] <... exit_group resumed>) = ? [pid 697] <... write resumed>) = 4 [pid 695] write(3, "1000", 4 [pid 694] close(5 [pid 692] +++ exited with 0 +++ [pid 697] close(3 [pid 696] <... write resumed>) = 262144 [pid 695] <... write resumed>) = 4 [pid 694] <... close resumed>) = 0 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=692, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 697] <... close resumed>) = 0 [pid 696] munmap(0x7f1bc18a3000, 138412032 [pid 695] close(3 [pid 694] close(4 [pid 693] ioctl(5, LOOP_SET_FD, 4 [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 697] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 696] <... munmap resumed>) = 0 [pid 695] <... close resumed>) = 0 [pid 356] <... restart_syscall resumed>) = 0 [pid 696] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 5 [pid 695] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 694] <... close resumed>) = 0 [pid 693] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 697] <... openat resumed>) = 3 [pid 697] ioctl(3, BLKSECDISCARD, [0, 0] [pid 696] ioctl(5, LOOP_SET_FD, 4 [pid 695] <... openat resumed>) = 3 [pid 694] exit_group(0 [pid 693] close(5 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 697] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 696] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 695] ioctl(3, BLKSECDISCARD, [0, 0] [pid 694] <... exit_group resumed>) = ? [pid 693] <... close resumed>) = 0 [pid 356] <... openat resumed>) = 3 [pid 697] memfd_create("syzkaller", 0 [pid 696] ioctl(5, LOOP_CLR_FD [pid 695] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 693] close(4 [pid 356] ioctl(3, LOOP_CLR_FD [pid 696] <... ioctl resumed>) = 0 [pid 356] <... ioctl resumed>) = 0 [pid 694] +++ exited with 0 +++ [pid 356] close(3) = 0 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=694, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 697] <... memfd_create resumed>) = 4 [pid 695] memfd_create("syzkaller", 0 [pid 693] <... close resumed>) = 0 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 697] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 696] ioctl(5, LOOP_SET_FD, 4 [pid 695] <... memfd_create resumed>) = 4 [pid 693] exit_group(0 [pid 358] <... openat resumed>) = 3 [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 698 [pid 697] <... mmap resumed>) = 0x7f1bc18a3000 [pid 696] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 695] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 693] <... exit_group resumed>) = ? [pid 358] ioctl(3, LOOP_CLR_FD [pid 696] close(5 [pid 358] <... ioctl resumed>) = 0 [pid 696] <... close resumed>) = 0 [pid 358] close(3 [pid 696] close(4 [pid 358] <... close resumed>) = 0 [pid 697] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 696] <... close resumed>) = 0 [pid 695] <... mmap resumed>) = 0x7f1bc18a3000 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 696] exit_group(0 [pid 693] +++ exited with 0 +++ [pid 696] <... exit_group resumed>) = ? [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 699 [pid 696] +++ exited with 0 +++ [pid 695] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=693, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=696, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] <... openat resumed>) = 3 [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 359] ioctl(3, LOOP_CLR_FD) = 0 [pid 697] <... write resumed>) = 262144 [pid 359] close(3) = 0 [pid 360] <... restart_syscall resumed>) = 0 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 697] munmap(0x7f1bc18a3000, 138412032 [pid 695] <... write resumed>) = 262144 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 700 [pid 697] <... munmap resumed>) = 0 [pid 695] munmap(0x7f1bc18a3000, 138412032 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 697] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 695] <... munmap resumed>) = 0 [pid 360] <... openat resumed>) = 3 [pid 697] <... openat resumed>) = 5 [pid 695] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 360] ioctl(3, LOOP_CLR_FD [pid 697] ioctl(5, LOOP_SET_FD, 4 [pid 695] <... openat resumed>) = 5 [pid 360] <... ioctl resumed>) = 0 [pid 697] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 695] ioctl(5, LOOP_SET_FD, 4 [pid 360] close(3 [pid 697] ioctl(5, LOOP_CLR_FD [pid 695] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 360] <... close resumed>) = 0 [pid 697] <... ioctl resumed>) = 0 [pid 695] ioctl(5, LOOP_CLR_FD [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 695] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 698 attached [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 701 [pid 698] set_robust_list(0x5555574d4660, 24./strace-static-x86_64: Process 699 attached ) = 0 [pid 698] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 697] ioctl(5, LOOP_SET_FD, 4 [pid 698] <... prctl resumed>) = 0 [pid 697] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 698] setpgid(0, 0 [pid 697] close(5 [pid 695] ioctl(5, LOOP_SET_FD, 4 [pid 698] <... setpgid resumed>) = 0 [pid 697] <... close resumed>) = 0 [pid 695] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 699] set_robust_list(0x5555574d4660, 24) = 0 [pid 698] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 697] close(4 [pid 695] close(5./strace-static-x86_64: Process 700 attached [pid 699] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 700] set_robust_list(0x5555574d4660, 24 [pid 699] <... prctl resumed>) = 0 [pid 700] <... set_robust_list resumed>) = 0 [pid 699] setpgid(0, 0 [pid 697] <... close resumed>) = 0 [pid 695] <... close resumed>) = 0 ./strace-static-x86_64: Process 701 attached [pid 698] <... openat resumed>) = 3 [pid 701] set_robust_list(0x5555574d4660, 24 [pid 700] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 699] <... setpgid resumed>) = 0 [pid 698] write(3, "1000", 4 [pid 697] exit_group(0 [pid 695] close(4 [pid 697] <... exit_group resumed>) = ? [pid 700] <... prctl resumed>) = 0 [pid 699] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 700] setpgid(0, 0 [pid 699] <... openat resumed>) = 3 [pid 700] <... setpgid resumed>) = 0 [pid 699] write(3, "1000", 4 [pid 695] <... close resumed>) = 0 [pid 700] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 701] <... set_robust_list resumed>) = 0 [pid 700] <... openat resumed>) = 3 [pid 699] <... write resumed>) = 4 [pid 698] <... write resumed>) = 4 [pid 697] +++ exited with 0 +++ [pid 695] exit_group(0 [pid 701] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 700] write(3, "1000", 4 [pid 699] close(3 [pid 698] close(3 [pid 695] <... exit_group resumed>) = ? [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=697, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 700] <... write resumed>) = 4 [pid 699] <... close resumed>) = 0 [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 700] close(3 [pid 699] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 357] <... restart_syscall resumed>) = 0 [pid 701] <... prctl resumed>) = 0 [pid 700] <... close resumed>) = 0 [pid 699] <... openat resumed>) = 3 [pid 698] <... close resumed>) = 0 [pid 695] +++ exited with 0 +++ [pid 701] setpgid(0, 0 [pid 700] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 699] ioctl(3, BLKSECDISCARD, [0, 0] [pid 698] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=695, si_uid=0, si_status=0, si_utime=0, si_stime=1} --- [pid 701] <... setpgid resumed>) = 0 [pid 700] <... openat resumed>) = 3 [pid 699] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 698] <... openat resumed>) = 3 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 701] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 700] ioctl(3, BLKSECDISCARD, [0, 0] [pid 699] memfd_create("syzkaller", 0 [pid 698] ioctl(3, BLKSECDISCARD, [0, 0] [pid 357] <... openat resumed>) = 3 [pid 701] <... openat resumed>) = 3 [pid 700] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 699] <... memfd_create resumed>) = 4 [pid 698] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 357] ioctl(3, LOOP_CLR_FD [pid 701] write(3, "1000", 4 [pid 700] memfd_create("syzkaller", 0 [pid 699] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 698] memfd_create("syzkaller", 0 [pid 357] <... ioctl resumed>) = 0 [pid 701] <... write resumed>) = 4 [pid 700] <... memfd_create resumed>) = 4 [pid 699] <... mmap resumed>) = 0x7f1bc18a3000 [pid 698] <... memfd_create resumed>) = 4 [pid 357] close(3 [pid 701] close(3 [pid 700] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 699] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 698] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 357] <... close resumed>) = 0 [pid 701] <... close resumed>) = 0 [pid 700] <... mmap resumed>) = 0x7f1bc18a3000 [pid 699] <... write resumed>) = 262144 [pid 698] <... mmap resumed>) = 0x7f1bc18a3000 [pid 361] <... openat resumed>) = 3 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 701] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 700] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 699] munmap(0x7f1bc18a3000, 138412032 [pid 361] ioctl(3, LOOP_CLR_FD [pid 701] <... openat resumed>) = 3 [pid 700] <... write resumed>) = 262144 [pid 699] <... munmap resumed>) = 0 [pid 698] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 361] <... ioctl resumed>) = 0 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 702 [pid 701] ioctl(3, BLKSECDISCARD, [0, 0] [pid 700] munmap(0x7f1bc18a3000, 138412032 [pid 699] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 361] close(3 [pid 701] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 700] <... munmap resumed>) = 0 [pid 699] <... openat resumed>) = 5 [pid 698] <... write resumed>) = 262144 [pid 361] <... close resumed>) = 0 [pid 701] memfd_create("syzkaller", 0 [pid 700] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 699] ioctl(5, LOOP_SET_FD, 4 [pid 698] munmap(0x7f1bc18a3000, 138412032 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 701] <... memfd_create resumed>) = 4 [pid 700] <... openat resumed>) = 5 [pid 699] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 698] <... munmap resumed>) = 0 [pid 701] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 700] ioctl(5, LOOP_SET_FD, 4 [pid 699] ioctl(5, LOOP_CLR_FD [pid 698] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 703 [pid 701] <... mmap resumed>) = 0x7f1bc18a3000 [pid 700] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 699] <... ioctl resumed>) = 0 [pid 698] <... openat resumed>) = 5 [pid 700] ioctl(5, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 702 attached [pid 702] set_robust_list(0x5555574d4660, 24 [pid 699] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 701] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 699] close(5 [pid 698] ioctl(5, LOOP_SET_FD, 4 [pid 700] ioctl(5, LOOP_SET_FD, 4 [pid 699] <... close resumed>) = 0 [pid 700] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 699] close(4 [pid 701] <... write resumed>) = 262144 [pid 700] close(5 [pid 699] <... close resumed>) = 0 [pid 698] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) ./strace-static-x86_64: Process 703 attached [pid 701] munmap(0x7f1bc18a3000, 138412032 [pid 700] <... close resumed>) = 0 [pid 699] exit_group(0 [pid 698] ioctl(5, LOOP_CLR_FD [pid 702] <... set_robust_list resumed>) = 0 [pid 700] close(4 [pid 699] <... exit_group resumed>) = ? [pid 703] set_robust_list(0x5555574d4660, 24 [pid 702] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 701] <... munmap resumed>) = 0 [pid 700] <... close resumed>) = 0 [pid 699] +++ exited with 0 +++ [pid 698] <... ioctl resumed>) = 0 [pid 703] <... set_robust_list resumed>) = 0 [pid 702] <... prctl resumed>) = 0 [pid 701] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 700] exit_group(0 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=699, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 703] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 702] setpgid(0, 0 [pid 701] <... openat resumed>) = 5 [pid 700] <... exit_group resumed>) = ? [pid 703] <... prctl resumed>) = 0 [pid 702] <... setpgid resumed>) = 0 [pid 701] ioctl(5, LOOP_SET_FD, 4 [pid 700] +++ exited with 0 +++ [pid 703] setpgid(0, 0 [pid 702] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 701] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 698] ioctl(5, LOOP_SET_FD, 4 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 703] <... setpgid resumed>) = 0 [pid 702] <... openat resumed>) = 3 [pid 701] ioctl(5, LOOP_CLR_FD [pid 698] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=700, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] <... openat resumed>) = 3 [pid 703] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 702] write(3, "1000", 4 [pid 701] <... ioctl resumed>) = 0 [pid 698] close(5 [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 358] ioctl(3, LOOP_CLR_FD [pid 703] <... openat resumed>) = 3 [pid 702] <... write resumed>) = 4 [pid 698] <... close resumed>) = 0 [pid 359] <... restart_syscall resumed>) = 0 [pid 358] <... ioctl resumed>) = 0 [pid 703] write(3, "1000", 4 [pid 702] close(3 [pid 698] close(4 [pid 358] close(3 [pid 703] <... write resumed>) = 4 [pid 702] <... close resumed>) = 0 [pid 358] <... close resumed>) = 0 [pid 702] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 703] close(3 [pid 702] <... openat resumed>) = 3 [pid 698] <... close resumed>) = 0 [pid 359] <... openat resumed>) = 3 [pid 703] <... close resumed>) = 0 [pid 702] ioctl(3, BLKSECDISCARD, [0, 0] [pid 701] ioctl(5, LOOP_SET_FD, 4 [pid 698] exit_group(0 [pid 359] ioctl(3, LOOP_CLR_FD [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 704 [pid 703] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 702] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 701] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 698] <... exit_group resumed>) = ? [pid 359] <... ioctl resumed>) = 0 [pid 703] <... openat resumed>) = 3 [pid 702] memfd_create("syzkaller", 0 [pid 701] close(5 [pid 359] close(3 [pid 703] ioctl(3, BLKSECDISCARD, [0, 0] [pid 702] <... memfd_create resumed>) = 4 [pid 701] <... close resumed>) = 0 [pid 698] +++ exited with 0 +++ [pid 359] <... close resumed>) = 0 [pid 703] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 702] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 701] close(4 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 703] memfd_create("syzkaller", 0 [pid 702] <... mmap resumed>) = 0x7f1bc18a3000 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=698, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 703] <... memfd_create resumed>) = 4 [pid 702] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 701] <... close resumed>) = 0 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 705 [pid 356] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 704 attached [pid 703] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 702] <... write resumed>) = 262144 [pid 701] exit_group(0 [pid 356] <... restart_syscall resumed>) = 0 [pid 704] set_robust_list(0x5555574d4660, 24 [pid 703] <... mmap resumed>) = 0x7f1bc18a3000 [pid 702] munmap(0x7f1bc18a3000, 138412032 [pid 701] <... exit_group resumed>) = ? [pid 704] <... set_robust_list resumed>) = 0 [pid 702] <... munmap resumed>) = 0 [pid 702] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 702] <... openat resumed>) = 5 [pid 356] <... openat resumed>) = 3 [pid 702] ioctl(5, LOOP_SET_FD, 4 [pid 356] ioctl(3, LOOP_CLR_FD [pid 702] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] <... ioctl resumed>) = 0 [pid 703] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 702] ioctl(5, LOOP_CLR_FD [pid 356] close(3 [pid 702] <... ioctl resumed>) = 0 [pid 701] +++ exited with 0 +++ [pid 356] <... close resumed>) = 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=701, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 706 [pid 704] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 703] <... write resumed>) = 262144 [pid 360] <... restart_syscall resumed>) = 0 [pid 704] <... prctl resumed>) = 0 [pid 703] munmap(0x7f1bc18a3000, 138412032 [pid 702] ioctl(5, LOOP_SET_FD, 4 [pid 704] setpgid(0, 0 [pid 703] <... munmap resumed>) = 0 [pid 702] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 704] <... setpgid resumed>) = 0 [pid 703] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 702] close(5 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 704] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 703] <... openat resumed>) = 5 [pid 702] <... close resumed>) = 0 [pid 360] <... openat resumed>) = 3 [pid 704] <... openat resumed>) = 3 [pid 703] ioctl(5, LOOP_SET_FD, 4 [pid 702] close(4 [pid 360] ioctl(3, LOOP_CLR_FD [pid 704] write(3, "1000", 4 [pid 703] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 702] <... close resumed>) = 0 [pid 360] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 705 attached [pid 704] <... write resumed>) = 4 [pid 703] ioctl(5, LOOP_CLR_FD [pid 702] exit_group(0 [pid 360] close(3 [pid 705] set_robust_list(0x5555574d4660, 24 [pid 704] close(3 [pid 703] <... ioctl resumed>) = 0 [pid 702] <... exit_group resumed>) = ? [pid 360] <... close resumed>) = 0 [pid 705] <... set_robust_list resumed>) = 0 [pid 704] <... close resumed>) = 0 [pid 702] +++ exited with 0 +++ [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 705] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 704] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 705] <... prctl resumed>) = 0 [pid 704] <... openat resumed>) = 3 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 707 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=702, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 705] setpgid(0, 0 [pid 704] ioctl(3, BLKSECDISCARD, [0, 0] [pid 703] ioctl(5, LOOP_SET_FD, 4 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 706 attached [pid 705] <... setpgid resumed>) = 0 [pid 704] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 703] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 357] <... openat resumed>) = 3 [pid 706] set_robust_list(0x5555574d4660, 24 [pid 705] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 704] memfd_create("syzkaller", 0 [pid 703] close(5 [pid 357] ioctl(3, LOOP_CLR_FD [pid 706] <... set_robust_list resumed>) = 0 [pid 705] <... openat resumed>) = 3 [pid 704] <... memfd_create resumed>) = 4 [pid 703] <... close resumed>) = 0 [pid 357] <... ioctl resumed>) = 0 [pid 706] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 705] write(3, "1000", 4 [pid 704] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 703] close(4 [pid 357] close(3 [pid 706] <... prctl resumed>) = 0 [pid 705] <... write resumed>) = 4 [pid 704] <... mmap resumed>) = 0x7f1bc18a3000 [pid 357] <... close resumed>) = 0 [pid 706] setpgid(0, 0 [pid 705] close(3 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 706] <... setpgid resumed>) = 0 [pid 705] <... close resumed>) = 0 [pid 703] <... close resumed>) = 0 [pid 706] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 705] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 708 [pid 706] <... openat resumed>) = 3 [pid 705] <... openat resumed>) = 3 [pid 704] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144./strace-static-x86_64: Process 707 attached [pid 706] write(3, "1000", 4 [pid 705] ioctl(3, BLKSECDISCARD, [0, 0] [pid 703] exit_group(0 [pid 706] <... write resumed>) = 4 [pid 705] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 706] close(3 [pid 705] memfd_create("syzkaller", 0 [pid 706] <... close resumed>) = 0 [pid 705] <... memfd_create resumed>) = 4 [pid 704] <... write resumed>) = 262144 [pid 703] <... exit_group resumed>) = ? [pid 707] set_robust_list(0x5555574d4660, 24 [pid 706] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 705] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 704] munmap(0x7f1bc18a3000, 138412032 [pid 706] <... openat resumed>) = 3 [pid 705] <... mmap resumed>) = 0x7f1bc18a3000 [pid 707] <... set_robust_list resumed>) = 0 [pid 706] ioctl(3, BLKSECDISCARD, [0, 0] [pid 705] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 704] <... munmap resumed>) = 0 [pid 703] +++ exited with 0 +++ [pid 707] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 706] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 705] <... write resumed>) = 262144 [pid 704] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 707] <... prctl resumed>) = 0 [pid 706] memfd_create("syzkaller", 0 [pid 705] munmap(0x7f1bc18a3000, 138412032 [pid 704] <... openat resumed>) = 5 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=703, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 707] setpgid(0, 0 [pid 706] <... memfd_create resumed>) = 4 [pid 705] <... munmap resumed>) = 0 [pid 704] ioctl(5, LOOP_SET_FD, 4 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 707] <... setpgid resumed>) = 0 [pid 706] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 705] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 704] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] <... openat resumed>) = 3 [pid 707] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 706] <... mmap resumed>) = 0x7f1bc18a3000 [pid 705] <... openat resumed>) = 5 [pid 704] ioctl(5, LOOP_CLR_FD [pid 361] ioctl(3, LOOP_CLR_FD [pid 707] <... openat resumed>) = 3 [pid 706] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 705] ioctl(5, LOOP_SET_FD, 4 [pid 704] <... ioctl resumed>) = 0 [pid 361] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 708 attached [pid 707] write(3, "1000", 4 [pid 706] <... write resumed>) = 262144 [pid 705] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] close(3 [pid 708] set_robust_list(0x5555574d4660, 24 [pid 707] <... write resumed>) = 4 [pid 706] munmap(0x7f1bc18a3000, 138412032 [pid 705] ioctl(5, LOOP_CLR_FD [pid 361] <... close resumed>) = 0 [pid 708] <... set_robust_list resumed>) = 0 [pid 707] close(3 [pid 706] <... munmap resumed>) = 0 [pid 705] <... ioctl resumed>) = 0 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 708] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 707] <... close resumed>) = 0 [pid 706] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 704] ioctl(5, LOOP_SET_FD, 4 [pid 708] <... prctl resumed>) = 0 [pid 707] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 706] <... openat resumed>) = 5 [pid 704] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 709 [pid 708] setpgid(0, 0 [pid 707] <... openat resumed>) = 3 [pid 706] ioctl(5, LOOP_SET_FD, 4 [pid 704] close(5 [pid 708] <... setpgid resumed>) = 0 [pid 707] ioctl(3, BLKSECDISCARD, [0, 0] [pid 706] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 704] <... close resumed>) = 0 [pid 708] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 707] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 706] ioctl(5, LOOP_CLR_FD [pid 705] ioctl(5, LOOP_SET_FD, 4 [pid 704] close(4 [pid 708] <... openat resumed>) = 3 [pid 707] memfd_create("syzkaller", 0 [pid 706] <... ioctl resumed>) = 0 [pid 705] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 708] write(3, "1000", 4 [pid 705] close(5 [pid 708] <... write resumed>) = 4 [pid 705] <... close resumed>) = 0 [pid 708] close(3 [pid 705] close(4 [pid 704] <... close resumed>) = 0 [pid 707] <... memfd_create resumed>) = 4 ./strace-static-x86_64: Process 709 attached [pid 708] <... close resumed>) = 0 [pid 707] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 705] <... close resumed>) = 0 [pid 704] exit_group(0 [pid 709] set_robust_list(0x5555574d4660, 24 [pid 708] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 707] <... mmap resumed>) = 0x7f1bc18a3000 [pid 706] ioctl(5, LOOP_SET_FD, 4 [pid 705] exit_group(0 [pid 704] <... exit_group resumed>) = ? [pid 708] <... openat resumed>) = 3 [pid 706] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 705] <... exit_group resumed>) = ? [pid 708] ioctl(3, BLKSECDISCARD, [0, 0] [pid 706] close(5 [pid 705] +++ exited with 0 +++ [pid 708] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 707] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 706] <... close resumed>) = 0 [pid 708] memfd_create("syzkaller", 0 [pid 706] close(4 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=705, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 709] <... set_robust_list resumed>) = 0 [pid 708] <... memfd_create resumed>) = 4 [pid 707] <... write resumed>) = 262144 [pid 706] <... close resumed>) = 0 [pid 704] +++ exited with 0 +++ [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 709] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 708] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 707] munmap(0x7f1bc18a3000, 138412032 [pid 706] exit_group(0 [pid 359] <... openat resumed>) = 3 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=704, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 709] <... prctl resumed>) = 0 [pid 708] <... mmap resumed>) = 0x7f1bc18a3000 [pid 707] <... munmap resumed>) = 0 [pid 706] <... exit_group resumed>) = ? [pid 359] ioctl(3, LOOP_CLR_FD [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 709] setpgid(0, 0 [pid 708] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 707] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 706] +++ exited with 0 +++ [pid 359] <... ioctl resumed>) = 0 [pid 358] <... restart_syscall resumed>) = 0 [pid 709] <... setpgid resumed>) = 0 [pid 708] <... write resumed>) = 262144 [pid 707] <... openat resumed>) = 5 [pid 359] close(3 [pid 709] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 708] munmap(0x7f1bc18a3000, 138412032 [pid 707] ioctl(5, LOOP_SET_FD, 4 [pid 359] <... close resumed>) = 0 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=706, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 709] <... openat resumed>) = 3 [pid 708] <... munmap resumed>) = 0 [pid 707] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 709] write(3, "1000", 4 [pid 708] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 707] ioctl(5, LOOP_CLR_FD [pid 358] <... openat resumed>) = 3 [pid 356] <... restart_syscall resumed>) = 0 [pid 709] <... write resumed>) = 4 [pid 708] <... openat resumed>) = 5 [pid 707] <... ioctl resumed>) = 0 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 710 [pid 358] ioctl(3, LOOP_CLR_FD [pid 709] close(3 [pid 708] ioctl(5, LOOP_SET_FD, 4 [pid 358] <... ioctl resumed>) = 0 [pid 709] <... close resumed>) = 0 [pid 708] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] close(3 [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 709] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 708] ioctl(5, LOOP_CLR_FD [pid 358] <... close resumed>) = 0 [pid 356] <... openat resumed>) = 3 [pid 709] <... openat resumed>) = 3 [pid 708] <... ioctl resumed>) = 0 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 356] ioctl(3, LOOP_CLR_FD [pid 709] ioctl(3, BLKSECDISCARD, [0, 0] [pid 707] ioctl(5, LOOP_SET_FD, 4 [pid 356] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 710 attached [pid 709] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 707] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 711 [pid 356] close(3 [pid 710] set_robust_list(0x5555574d4660, 24 [pid 709] memfd_create("syzkaller", 0 [pid 707] close(5 [pid 356] <... close resumed>) = 0 [pid 710] <... set_robust_list resumed>) = 0 [pid 709] <... memfd_create resumed>) = 4 [pid 707] <... close resumed>) = 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 710] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 709] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 708] ioctl(5, LOOP_SET_FD, 4 [pid 707] close(4 [pid 710] <... prctl resumed>) = 0 [pid 709] <... mmap resumed>) = 0x7f1bc18a3000 [pid 708] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 712 [pid 708] close(5) = 0 [pid 708] close(4) = 0 [pid 707] <... close resumed>) = 0 [pid 708] exit_group(0) = ? [pid 710] setpgid(0, 0 [pid 709] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 708] +++ exited with 0 +++ [pid 707] exit_group(0 [pid 710] <... setpgid resumed>) = 0 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=708, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 357] ioctl(3, LOOP_CLR_FD) = 0 [pid 357] close(3) = 0 [pid 709] <... write resumed>) = 262144 [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 707] <... exit_group resumed>) = ? [pid 710] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 709] munmap(0x7f1bc18a3000, 138412032 [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 713 [pid 707] +++ exited with 0 +++ [pid 709] <... munmap resumed>) = 0 [pid 710] <... openat resumed>) = 3 [pid 709] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=707, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- ./strace-static-x86_64: Process 711 attached [pid 710] write(3, "1000", 4 [pid 709] <... openat resumed>) = 5 [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 711] set_robust_list(0x5555574d4660, 24 [pid 710] <... write resumed>) = 4 [pid 709] ioctl(5, LOOP_SET_FD, 4 [pid 360] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 712 attached [pid 711] <... set_robust_list resumed>) = 0 [pid 710] close(3 [pid 709] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 712] set_robust_list(0x5555574d4660, 24 [pid 711] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 710] <... close resumed>) = 0 [pid 709] ioctl(5, LOOP_CLR_FD [pid 712] <... set_robust_list resumed>) = 0 [pid 711] <... prctl resumed>) = 0 [pid 710] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 709] <... ioctl resumed>) = 0 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 712] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 711] setpgid(0, 0 [pid 710] <... openat resumed>) = 3 [pid 360] <... openat resumed>) = 3 ./strace-static-x86_64: Process 713 attached [pid 712] <... prctl resumed>) = 0 [pid 711] <... setpgid resumed>) = 0 [pid 710] ioctl(3, BLKSECDISCARD, [0, 0] [pid 360] ioctl(3, LOOP_CLR_FD [pid 713] set_robust_list(0x5555574d4660, 24 [pid 712] setpgid(0, 0 [pid 711] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 710] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 360] <... ioctl resumed>) = 0 [pid 713] <... set_robust_list resumed>) = 0 [pid 712] <... setpgid resumed>) = 0 [pid 711] <... openat resumed>) = 3 [pid 710] memfd_create("syzkaller", 0 [pid 360] close(3 [pid 713] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 712] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 711] write(3, "1000", 4 [pid 710] <... memfd_create resumed>) = 4 [pid 709] ioctl(5, LOOP_SET_FD, 4 [pid 360] <... close resumed>) = 0 [pid 713] <... prctl resumed>) = 0 [pid 712] <... openat resumed>) = 3 [pid 711] <... write resumed>) = 4 [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 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 713] setpgid(0, 0 [pid 712] write(3, "1000", 4 [pid 711] close(3 [pid 710] <... mmap resumed>) = 0x7f1bc18a3000 [pid 709] close(5 [pid 713] <... setpgid resumed>) = 0 [pid 712] <... write resumed>) = 4 [pid 711] <... close resumed>) = 0 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 714 [pid 711] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT) = 3 [pid 711] ioctl(3, BLKSECDISCARD, [0, 0]) = -1 EOPNOTSUPP (Operation not supported) [pid 711] memfd_create("syzkaller", 0) = 4 [pid 710] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 709] <... close resumed>) = 0 [pid 712] close(3 [pid 713] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 711] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 713] <... openat resumed>) = 3 [pid 712] <... close resumed>) = 0 [pid 711] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 710] <... write resumed>) = 262144 [pid 709] close(4 [pid 713] write(3, "1000", 4 [pid 712] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 711] <... write resumed>) = 262144 [pid 710] munmap(0x7f1bc18a3000, 138412032 [pid 709] <... close resumed>) = 0 [pid 713] <... write resumed>) = 4 [pid 712] <... openat resumed>) = 3 [pid 711] munmap(0x7f1bc18a3000, 138412032 [pid 710] <... munmap resumed>) = 0 ./strace-static-x86_64: Process 714 attached [pid 713] close(3 [pid 712] ioctl(3, BLKSECDISCARD, [0, 0] [pid 711] <... munmap resumed>) = 0 [pid 710] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 709] exit_group(0 [pid 714] set_robust_list(0x5555574d4660, 24 [pid 713] <... close resumed>) = 0 [pid 712] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 711] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 710] <... openat resumed>) = 5 [pid 709] <... exit_group resumed>) = ? [pid 713] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 712] memfd_create("syzkaller", 0 [pid 711] <... openat resumed>) = 5 [pid 711] ioctl(5, LOOP_SET_FD, 4) = -1 EBUSY (Device or resource busy) [pid 711] ioctl(5, LOOP_CLR_FD [pid 709] +++ exited with 0 +++ [pid 711] <... ioctl resumed>) = 0 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=709, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 714] <... set_robust_list resumed>) = 0 [pid 713] <... openat resumed>) = 3 [pid 712] <... memfd_create resumed>) = 4 [pid 710] ioctl(5, LOOP_SET_FD, 4 [pid 361] <... openat resumed>) = 3 [pid 714] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 713] ioctl(3, BLKSECDISCARD, [0, 0] [pid 712] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 710] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] ioctl(3, LOOP_CLR_FD [pid 714] <... prctl resumed>) = 0 [pid 713] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 712] <... mmap resumed>) = 0x7f1bc18a3000 [pid 710] ioctl(5, LOOP_CLR_FD [pid 361] <... ioctl resumed>) = 0 [pid 714] setpgid(0, 0 [pid 713] memfd_create("syzkaller", 0 [pid 711] ioctl(5, LOOP_SET_FD, 4 [pid 361] close(3 [pid 711] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] <... close resumed>) = 0 [pid 711] close(5 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 714] <... setpgid resumed>) = 0 [pid 713] <... memfd_create resumed>) = 4 [pid 712] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 711] <... close resumed>) = 0 [pid 710] <... ioctl resumed>) = 0 [pid 713] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 711] close(4 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 715 [pid 714] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 713] <... mmap resumed>) = 0x7f1bc18a3000 [pid 712] <... write resumed>) = 262144 [pid 711] <... close resumed>) = 0 [pid 714] <... openat resumed>) = 3 [pid 711] exit_group(0) = ? [pid 711] +++ exited with 0 +++ [pid 714] write(3, "1000", 4 [pid 713] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 712] munmap(0x7f1bc18a3000, 138412032 [pid 714] <... write resumed>) = 4 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=711, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] restart_syscall(<... resuming interrupted clone ...>./strace-static-x86_64: Process 715 attached [pid 715] set_robust_list(0x5555574d4660, 24 [pid 358] <... restart_syscall resumed>) = 0 [pid 714] close(3 [pid 712] <... munmap resumed>) = 0 [pid 710] ioctl(5, LOOP_SET_FD, 4 [pid 714] <... close resumed>) = 0 [pid 712] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 710] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 714] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 713] <... write resumed>) = 262144 [pid 712] <... openat resumed>) = 5 [pid 710] close(5 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 714] <... openat resumed>) = 3 [pid 713] munmap(0x7f1bc18a3000, 138412032 [pid 712] ioctl(5, LOOP_SET_FD, 4 [pid 710] <... close resumed>) = 0 [pid 358] <... openat resumed>) = 3 [pid 714] ioctl(3, BLKSECDISCARD, [0, 0] [pid 712] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 710] close(4 [pid 358] ioctl(3, LOOP_CLR_FD [pid 714] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 713] <... munmap resumed>) = 0 [pid 712] ioctl(5, LOOP_CLR_FD [pid 358] <... ioctl resumed>) = 0 [pid 358] close(3) = 0 [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 715] <... set_robust_list resumed>) = 0 [pid 714] memfd_create("syzkaller", 0 [pid 713] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 712] <... ioctl resumed>) = 0 [pid 710] <... close resumed>) = 0 [pid 715] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 714] <... memfd_create resumed>) = 4 [pid 713] <... openat resumed>) = 5 [pid 710] exit_group(0 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 716 [pid 715] <... prctl resumed>) = 0 [pid 714] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 713] ioctl(5, LOOP_SET_FD, 4 [pid 710] <... exit_group resumed>) = ? [pid 715] setpgid(0, 0 [pid 714] <... mmap resumed>) = 0x7f1bc18a3000 [pid 713] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 715] <... setpgid resumed>) = 0 [pid 715] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 710] +++ exited with 0 +++ [pid 715] <... openat resumed>) = 3 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=710, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 715] write(3, "1000", 4 [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 715] <... write resumed>) = 4 [pid 359] <... restart_syscall resumed>) = 0 [pid 715] close(3) = 0 [pid 715] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 715] <... openat resumed>) = 3 [pid 714] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 713] ioctl(5, LOOP_CLR_FD [pid 712] ioctl(5, LOOP_SET_FD, 4 [pid 359] <... openat resumed>) = 3 [pid 715] ioctl(3, BLKSECDISCARD, [0, 0] [pid 359] ioctl(3, LOOP_CLR_FD [pid 715] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 359] <... ioctl resumed>) = 0 [pid 715] memfd_create("syzkaller", 0 [pid 359] close(3 [pid 715] <... memfd_create resumed>) = 4 [pid 714] <... write resumed>) = 262144 [pid 713] <... ioctl resumed>) = 0 [pid 712] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] <... close resumed>) = 0 [pid 715] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 714] munmap(0x7f1bc18a3000, 138412032 [pid 712] close(5 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 715] <... mmap resumed>) = 0x7f1bc18a3000 [pid 714] <... munmap resumed>) = 0 [pid 712] <... close resumed>) = 0 [pid 715] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 714] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 712] close(4 [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 717 ./strace-static-x86_64: Process 716 attached [pid 714] <... openat resumed>) = 5 [pid 713] ioctl(5, LOOP_SET_FD, 4 [pid 712] <... close resumed>) = 0 [pid 716] set_robust_list(0x5555574d4660, 24 [pid 714] ioctl(5, LOOP_SET_FD, 4 [pid 713] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 712] exit_group(0 [pid 716] <... set_robust_list resumed>) = 0 [pid 714] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 713] close(5 [pid 712] <... exit_group resumed>) = ? [pid 715] <... write resumed>) = 262144 [pid 714] ioctl(5, LOOP_CLR_FD [pid 713] <... close resumed>) = 0 [pid 716] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 714] <... ioctl resumed>) = 0 [pid 713] close(4 [pid 712] +++ exited with 0 +++ [pid 715] munmap(0x7f1bc18a3000, 138412032 [pid 716] <... prctl resumed>) = 0 [pid 715] <... munmap resumed>) = 0 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=712, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 715] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 713] <... close resumed>) = 0 [pid 356] restart_syscall(<... resuming interrupted clone ...> [pid 716] setpgid(0, 0 [pid 715] <... openat resumed>) = 5 [pid 713] exit_group(0 [pid 356] <... restart_syscall resumed>) = 0 [pid 716] <... setpgid resumed>) = 0 [pid 715] ioctl(5, LOOP_SET_FD, 4 [pid 713] <... exit_group resumed>) = ? [pid 715] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 715] ioctl(5, LOOP_CLR_FD [pid 356] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 715] <... ioctl resumed>) = 0 [pid 356] <... openat resumed>) = 3 [pid 716] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 713] +++ exited with 0 +++ [pid 356] ioctl(3, LOOP_CLR_FD [pid 716] <... openat resumed>) = 3 [pid 714] ioctl(5, LOOP_SET_FD, 4 [pid 357] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=713, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 356] <... ioctl resumed>) = 0 [pid 716] write(3, "1000", 4 [pid 714] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 357] restart_syscall(<... resuming interrupted clone ...> [pid 356] close(3 [pid 716] <... write resumed>) = 4 [pid 714] close(5 [pid 357] <... restart_syscall resumed>) = 0 [pid 356] <... close resumed>) = 0 [pid 716] close(3 [pid 715] ioctl(5, LOOP_SET_FD, 4 [pid 714] <... close resumed>) = 0 [pid 356] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 717 attached [pid 716] <... close resumed>) = 0 [pid 715] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 714] close(4 [pid 717] set_robust_list(0x5555574d4660, 24 [pid 716] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 715] close(5 [pid 357] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 356] <... clone resumed>, child_tidptr=0x5555574d4650) = 718 [pid 717] <... set_robust_list resumed>) = 0 [pid 715] <... close resumed>) = 0 [pid 357] <... openat resumed>) = 3 [pid 714] <... close resumed>) = 0 [pid 717] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 716] <... openat resumed>) = 3 [pid 715] close(4 [pid 714] exit_group(0 [pid 357] ioctl(3, LOOP_CLR_FD [pid 717] <... prctl resumed>) = 0 [pid 716] ioctl(3, BLKSECDISCARD, [0, 0] [pid 715] <... close resumed>) = 0 [pid 714] <... exit_group resumed>) = ? [pid 357] <... ioctl resumed>) = 0 [pid 717] setpgid(0, 0 [pid 716] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 715] exit_group(0 [pid 357] close(3 [pid 717] <... setpgid resumed>) = 0 [pid 715] <... exit_group resumed>) = ? [pid 714] +++ exited with 0 +++ [pid 357] <... close resumed>) = 0 [pid 717] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 716] memfd_create("syzkaller", 0 [pid 715] +++ exited with 0 +++ [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=714, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 718 attached [pid 717] <... openat resumed>) = 3 [pid 716] <... memfd_create resumed>) = 4 [pid 718] set_robust_list(0x5555574d4660, 24 [pid 717] write(3, "1000", 4 [pid 716] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=715, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 357] <... clone resumed>, child_tidptr=0x5555574d4650) = 719 [pid 718] <... set_robust_list resumed>) = 0 [pid 717] <... write resumed>) = 4 [pid 716] <... mmap resumed>) = 0x7f1bc18a3000 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 717] close(3 [pid 361] <... openat resumed>) = 3 [pid 360] <... openat resumed>) = 3 [pid 717] <... close resumed>) = 0 [pid 361] ioctl(3, LOOP_CLR_FD [pid 360] ioctl(3, LOOP_CLR_FD [pid 717] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 361] <... ioctl resumed>) = 0 [pid 360] <... ioctl resumed>) = 0 [pid 717] <... openat resumed>) = 3 [pid 361] close(3 [pid 360] close(3 [pid 717] ioctl(3, BLKSECDISCARD, [0, 0] [pid 361] <... close resumed>) = 0 [pid 360] <... close resumed>) = 0 [pid 717] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 360] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 718] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 717] memfd_create("syzkaller", 0 [pid 716] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 718] <... prctl resumed>) = 0 [pid 717] <... memfd_create resumed>) = 4 [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 720 [pid 360] <... clone resumed>, child_tidptr=0x5555574d4650) = 721 [pid 717] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 718] setpgid(0, 0 [pid 717] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 716] <... write resumed>) = 262144 ./strace-static-x86_64: Process 721 attached ./strace-static-x86_64: Process 720 attached ./strace-static-x86_64: Process 719 attached [pid 718] <... setpgid resumed>) = 0 [pid 717] <... write resumed>) = 262144 [pid 716] munmap(0x7f1bc18a3000, 138412032 [pid 721] set_robust_list(0x5555574d4660, 24 [pid 720] set_robust_list(0x5555574d4660, 24 [pid 719] set_robust_list(0x5555574d4660, 24 [pid 718] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 717] munmap(0x7f1bc18a3000, 138412032 [pid 721] <... set_robust_list resumed>) = 0 [pid 720] <... set_robust_list resumed>) = 0 [pid 719] <... set_robust_list resumed>) = 0 [pid 718] <... openat resumed>) = 3 [pid 717] <... munmap resumed>) = 0 [pid 716] <... munmap resumed>) = 0 [pid 721] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 720] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 719] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 718] write(3, "1000", 4 [pid 717] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 716] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 721] <... prctl resumed>) = 0 [pid 720] <... prctl resumed>) = 0 [pid 719] <... prctl resumed>) = 0 [pid 718] <... write resumed>) = 4 [pid 717] <... openat resumed>) = 5 [pid 716] <... openat resumed>) = 5 [pid 721] setpgid(0, 0 [pid 720] setpgid(0, 0 [pid 719] setpgid(0, 0 [pid 718] close(3 [pid 717] ioctl(5, LOOP_SET_FD, 4 [pid 716] ioctl(5, LOOP_SET_FD, 4 [pid 721] <... setpgid resumed>) = 0 [pid 720] <... setpgid resumed>) = 0 [pid 719] <... setpgid resumed>) = 0 [pid 718] <... close resumed>) = 0 [pid 717] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 716] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 721] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 720] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 719] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 717] ioctl(5, LOOP_CLR_FD [pid 721] <... openat resumed>) = 3 [pid 719] <... openat resumed>) = 3 [pid 718] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 717] <... ioctl resumed>) = 0 [pid 716] ioctl(5, LOOP_CLR_FD [pid 721] write(3, "1000", 4 [pid 720] <... openat resumed>) = 3 [pid 719] write(3, "1000", 4 [pid 718] <... openat resumed>) = 3 [pid 716] <... ioctl resumed>) = 0 [pid 721] <... write resumed>) = 4 [pid 720] write(3, "1000", 4 [pid 719] <... write resumed>) = 4 [pid 718] ioctl(3, BLKSECDISCARD, [0, 0] [pid 721] close(3 [pid 720] <... write resumed>) = 4 [pid 719] close(3 [pid 718] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 721] <... close resumed>) = 0 [pid 720] close(3 [pid 719] <... close resumed>) = 0 [pid 718] memfd_create("syzkaller", 0 [pid 721] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 720] <... close resumed>) = 0 [pid 721] <... openat resumed>) = 3 [pid 720] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 719] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 718] <... memfd_create resumed>) = 4 [pid 717] ioctl(5, LOOP_SET_FD, 4 [pid 721] ioctl(3, BLKSECDISCARD, [0, 0] [pid 720] <... openat resumed>) = 3 [pid 719] <... openat resumed>) = 3 [pid 718] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 717] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 716] ioctl(5, LOOP_SET_FD, 4 [pid 721] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 720] ioctl(3, BLKSECDISCARD, [0, 0] [pid 719] ioctl(3, BLKSECDISCARD, [0, 0] [pid 718] <... mmap resumed>) = 0x7f1bc18a3000 [pid 717] close(5 [pid 716] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 721] memfd_create("syzkaller", 0 [pid 720] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 719] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 717] <... close resumed>) = 0 [pid 717] close(4 [pid 718] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 717] <... close resumed>) = 0 [pid 716] close(5 [pid 721] <... memfd_create resumed>) = 4 [pid 720] memfd_create("syzkaller", 0 [pid 719] memfd_create("syzkaller", 0 [pid 717] exit_group(0) = ? [pid 719] <... memfd_create resumed>) = 4 [pid 718] <... write resumed>) = 262144 [pid 717] +++ exited with 0 +++ [pid 720] <... memfd_create resumed>) = 4 [pid 716] <... close resumed>) = 0 [pid 721] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f1bc18a3000 [pid 720] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 719] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 718] munmap(0x7f1bc18a3000, 138412032 [pid 716] close(4 [pid 359] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=717, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 359] restart_syscall(<... resuming interrupted clone ...> [pid 720] <... mmap resumed>) = 0x7f1bc18a3000 [pid 721] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 720] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 719] <... mmap resumed>) = 0x7f1bc18a3000 [pid 359] <... restart_syscall resumed>) = 0 [pid 720] <... write resumed>) = 262144 [pid 716] <... close resumed>) = 0 [pid 720] munmap(0x7f1bc18a3000, 138412032) = 0 [pid 359] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 720] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 359] <... openat resumed>) = 3 [pid 720] <... openat resumed>) = 5 [pid 719] write(4, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 262144 [pid 716] exit_group(0 [pid 359] ioctl(3, LOOP_CLR_FD [pid 721] <... write resumed>) = 262144 [pid 720] ioctl(5, LOOP_SET_FD, 4 [pid 716] <... exit_group resumed>) = ? [pid 359] <... ioctl resumed>) = 0 [pid 720] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 359] close(3 [pid 720] ioctl(5, LOOP_CLR_FD [pid 359] <... close resumed>) = 0 [pid 720] <... ioctl resumed>) = 0 [pid 359] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 719] <... write resumed>) = 262144 [pid 716] +++ exited with 0 +++ [pid 359] <... clone resumed>, child_tidptr=0x5555574d4650) = 722 [pid 721] munmap(0x7f1bc18a3000, 138412032 [pid 719] munmap(0x7f1bc18a3000, 138412032 [pid 718] <... munmap resumed>) = 0 [pid 358] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=716, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 721] <... munmap resumed>) = 0 [pid 718] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 358] restart_syscall(<... resuming interrupted clone ...> [pid 719] <... munmap resumed>) = 0 [pid 718] <... openat resumed>) = 5 [pid 721] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 5 [pid 720] ioctl(5, LOOP_SET_FD, 4 [pid 719] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 718] ioctl(5, LOOP_SET_FD, 4 [pid 358] <... restart_syscall resumed>) = 0 [pid 721] ioctl(5, LOOP_SET_FD, 4 [pid 720] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 719] <... openat resumed>) = 5 [pid 718] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 721] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 720] close(5 [pid 719] ioctl(5, LOOP_SET_FD, 4 [pid 718] ioctl(5, LOOP_CLR_FD [pid 721] ioctl(5, LOOP_CLR_FD [pid 720] <... close resumed>) = 0 [pid 719] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 718] <... ioctl resumed>) = 0 [pid 358] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 721] <... ioctl resumed>) = 0 [pid 720] close(4 [pid 719] ioctl(5, LOOP_CLR_FD [pid 358] <... openat resumed>) = 3 [pid 720] <... close resumed>) = 0 [pid 719] <... ioctl resumed>) = 0 [pid 358] ioctl(3, LOOP_CLR_FD [pid 720] exit_group(0 [pid 358] <... ioctl resumed>) = 0 [pid 720] <... exit_group resumed>) = ? [pid 358] close(3 [pid 720] +++ exited with 0 +++ [pid 718] ioctl(5, LOOP_SET_FD, 4 [pid 358] <... close resumed>) = 0 [pid 721] ioctl(5, LOOP_SET_FD, 4 [pid 719] ioctl(5, LOOP_SET_FD, 4 [pid 718] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 361] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=720, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 358] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 721] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 719] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 718] close(5 [pid 361] restart_syscall(<... resuming interrupted clone ...> [pid 721] close(5 [pid 719] close(5 [pid 718] <... close resumed>) = 0 [pid 361] <... restart_syscall resumed>) = 0 [pid 358] <... clone resumed>, child_tidptr=0x5555574d4650) = 723 [pid 721] <... close resumed>) = 0 [pid 719] <... close resumed>) = 0 [pid 718] close(4./strace-static-x86_64: Process 722 attached [pid 721] close(4 [pid 719] close(4 [pid 722] set_robust_list(0x5555574d4660, 24 [pid 361] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 722] <... set_robust_list resumed>) = 0 [pid 718] <... close resumed>) = 0 [pid 361] <... openat resumed>) = 3 [pid 722] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 361] ioctl(3, LOOP_CLR_FD [pid 722] <... prctl resumed>) = 0 [pid 361] <... ioctl resumed>) = 0 [pid 722] setpgid(0, 0 [pid 361] close(3 [pid 722] <... setpgid resumed>) = 0 [pid 361] <... close resumed>) = 0 [pid 722] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 721] <... close resumed>) = 0 [pid 361] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 722] <... openat resumed>) = 3 [pid 721] exit_group(0 [pid 719] <... close resumed>) = 0 [pid 718] exit_group(0 [pid 722] write(3, "1000", 4 [pid 721] <... exit_group resumed>) = ? [pid 719] exit_group(0 [pid 718] <... exit_group resumed>) = ? [pid 361] <... clone resumed>, child_tidptr=0x5555574d4650) = 724 [pid 722] <... write resumed>) = 4 [pid 722] close(3) = 0 [pid 722] openat(AT_FDCWD, "/dev/loop0", O_WRONLY|O_NONBLOCK|O_DIRECT [pid 721] +++ exited with 0 +++ [pid 719] <... exit_group resumed>) = ? [pid 722] <... openat resumed>) = 3 [pid 360] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=721, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 722] ioctl(3, BLKSECDISCARD, [0, 0] [pid 360] restart_syscall(<... resuming interrupted clone ...> [pid 722] <... ioctl resumed>) = -1 EOPNOTSUPP (Operation not supported) [pid 718] +++ exited with 0 +++ [pid 360] <... restart_syscall resumed>) = 0 [pid 722] memfd_create("syzkaller", 0 [pid 356] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=718, si_uid=0, si_status=0, si_utime=0, si_stime=0} --- [pid 722] <... memfd_create resumed>) = 4 [pid 719] +++ exited with 0 +++ [pid 722] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 360] openat(AT_FDCWD, "/dev/loop4", O_RDWR