./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor101952002 <...> Warning: Permanently added '10.128.1.45' (ED25519) to the list of known hosts. execve("./syz-executor101952002", ["./syz-executor101952002"], 0x7fff7a42f680 /* 10 vars */) = 0 brk(NULL) = 0x555555646000 brk(0x555555646d00) = 0x555555646d00 arch_prctl(ARCH_SET_FS, 0x555555646380) = 0 set_tid_address(0x555555646650) = 5058 set_robust_list(0x555555646660, 24) = 0 rseq(0x555555646ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor101952002", 4096) = 27 getrandom("\xdd\xf4\xcb\x92\xef\xe6\x11\xd8", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555646d00 brk(0x555555667d00) = 0x555555667d00 brk(0x555555668000) = 0x555555668000 mprotect(0x7f08308de000, 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./strace-static-x86_64: Process 5059 attached , child_tidptr=0x555555646650) = 5059 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] set_robust_list(0x555555646660, 24) = 0 ./strace-static-x86_64: Process 5060 attached [pid 5058] <... clone resumed>, child_tidptr=0x555555646650) = 5060 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 5061 attached [pid 5060] set_robust_list(0x555555646660, 24 [pid 5059] <... openat resumed>) = 3 [pid 5060] <... set_robust_list resumed>) = 0 [pid 5058] <... clone resumed>, child_tidptr=0x555555646650) = 5061 [pid 5061] set_robust_list(0x555555646660, 24 [pid 5059] ioctl(3, LOOP_CLR_FD [pid 5060] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] <... set_robust_list resumed>) = 0 [pid 5059] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5061] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5060] <... openat resumed>) = 3 [pid 5059] close(3 [pid 5061] <... openat resumed>) = 3 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5059] <... close resumed>) = 0 [pid 5061] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5062 attached [pid 5058] <... clone resumed>, child_tidptr=0x555555646650) = 5062 [pid 5061] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5060] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5062] set_robust_list(0x555555646660, 24 [pid 5061] close(3 [pid 5060] close(3) = 0 [pid 5062] <... set_robust_list resumed>) = 0 [pid 5061] <... close resumed>) = 0 ./strace-static-x86_64: Process 5064 attached [pid 5062] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5067 attached ./strace-static-x86_64: Process 5066 attached ./strace-static-x86_64: Process 5065 attached [pid 5058] <... clone resumed>, child_tidptr=0x555555646650) = 5065 [pid 5064] set_robust_list(0x555555646660, 24 [pid 5062] <... openat resumed>) = 3 [pid 5059] <... clone resumed>, child_tidptr=0x555555646650) = 5064 [pid 5058] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5066] set_robust_list(0x555555646660, 24 [pid 5065] set_robust_list(0x555555646660, 24 [pid 5064] <... set_robust_list resumed>) = 0 [pid 5062] ioctl(3, LOOP_CLR_FD [pid 5067] set_robust_list(0x555555646660, 24 [pid 5061] <... clone resumed>, child_tidptr=0x555555646650) = 5067 [pid 5060] <... clone resumed>, child_tidptr=0x555555646650) = 5066 [pid 5064] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 5068 attached [pid 5067] <... set_robust_list resumed>) = 0 [pid 5066] <... set_robust_list resumed>) = 0 [pid 5065] <... set_robust_list resumed>) = 0 [pid 5064] <... prctl resumed>) = 0 [pid 5062] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5068] set_robust_list(0x555555646660, 24 [pid 5067] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5066] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5065] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5064] setpgid(0, 0 [pid 5062] close(3 [pid 5067] <... prctl resumed>) = 0 [pid 5066] <... prctl resumed>) = 0 [pid 5064] <... setpgid resumed>) = 0 [pid 5062] <... close resumed>) = 0 [pid 5058] <... clone resumed>, child_tidptr=0x555555646650) = 5068 [pid 5067] setpgid(0, 0 [pid 5066] setpgid(0, 0 [pid 5064] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5068] <... set_robust_list resumed>) = 0 [pid 5067] <... setpgid resumed>) = 0 [pid 5066] <... setpgid resumed>) = 0 [pid 5065] <... openat resumed>) = 3 [pid 5064] <... openat resumed>) = 3 [pid 5064] write(3, "1000", 4 [pid 5068] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5066] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5065] ioctl(3, LOOP_CLR_FD [pid 5064] <... write resumed>) = 4 [pid 5067] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5066] <... openat resumed>) = 3 [pid 5065] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5064] close(3./strace-static-x86_64: Process 5069 attached [pid 5068] <... openat resumed>) = 3 [pid 5067] <... openat resumed>) = 3 [pid 5066] write(3, "1000", 4 [pid 5065] close(3 [pid 5064] <... close resumed>) = 0 [pid 5069] set_robust_list(0x555555646660, 24 [pid 5067] write(3, "1000", 4 [pid 5066] <... write resumed>) = 4 [pid 5065] <... close resumed>) = 0 [pid 5064] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5062] <... clone resumed>, child_tidptr=0x555555646650) = 5069 [pid 5069] <... set_robust_list resumed>) = 0 [pid 5068] ioctl(3, LOOP_CLR_FD [pid 5067] <... write resumed>) = 4 [pid 5066] close(3 [pid 5065] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5064] <... openat resumed>) = 3 [pid 5066] <... close resumed>) = 0 [pid 5067] close(3 [pid 5066] openat(AT_FDCWD, "/proc/partitions", O_RDONLY./strace-static-x86_64: Process 5070 attached [pid 5069] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5068] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5067] <... close resumed>) = 0 [pid 5064] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5069] <... prctl resumed>) = 0 [pid 5068] close(3 [pid 5065] <... clone resumed>, child_tidptr=0x555555646650) = 5070 [pid 5069] setpgid(0, 0 [pid 5068] <... close resumed>) = 0 [pid 5067] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5069] <... setpgid resumed>) = 0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] set_robust_list(0x555555646660, 24 [pid 5067] <... openat resumed>) = 3 [pid 5066] <... openat resumed>) = 3 [pid 5070] <... set_robust_list resumed>) = 0 [pid 5067] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5066] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY./strace-static-x86_64: Process 5071 attached [pid 5070] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5069] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5067] <... openat resumed>) = 4 [pid 5066] <... openat resumed>) = 4 [pid 5064] <... openat resumed>) = 4 [pid 5070] <... prctl resumed>) = 0 [pid 5066] sendfile(4, 3, [122] [pid 5071] set_robust_list(0x555555646660, 24 [pid 5070] setpgid(0, 0 [pid 5069] <... openat resumed>) = 3 [pid 5068] <... clone resumed>, child_tidptr=0x555555646650) = 5071 [pid 5067] sendfile(4, 3, [122] [pid 5064] sendfile(4, 3, [122] [pid 5071] <... set_robust_list resumed>) = 0 [pid 5070] <... setpgid resumed>) = 0 [pid 5069] write(3, "1000", 4 [pid 5071] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5070] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5071] <... prctl resumed>) = 0 [pid 5070] <... openat resumed>) = 3 [pid 5069] <... write resumed>) = 4 [pid 5070] write(3, "1000", 4) = 4 [pid 5070] close(3) = 0 [pid 5070] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5070] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5070] sendfile(4, 3, [122] [pid 5071] setpgid(0, 0 [pid 5069] close(3 [pid 5071] <... setpgid resumed>) = 0 [pid 5069] <... close resumed>) = 0 [pid 5071] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5069] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5071] <... openat resumed>) = 3 [pid 5071] write(3, "1000", 4 [pid 5069] <... openat resumed>) = 3 [pid 5069] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5071] <... write resumed>) = 4 [pid 5071] close(3) = 0 [pid 5071] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5069] <... openat resumed>) = 4 [pid 5071] <... openat resumed>) = 3 [pid 5069] sendfile(4, 3, [122] [pid 5071] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 61.887941][ T5069] syz-executor101 (5069): drop_caches: 3 [ 62.179661][ T5067] syz-executor101 (5067): drop_caches: 3 [ 62.224991][ T5069] syz-executor101 (5069): drop_caches: 3 [ 62.255838][ T5070] syz-executor101 (5070): drop_caches: 3 [pid 5071] sendfile(4, 3, [122] [pid 5069] <... sendfile resumed> => [640], 571) = 518 [pid 5069] memfd_create("syzkaller", 0) = 5 [ 62.272728][ T5071] syz-executor101 (5071): drop_caches: 3 [pid 5069] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f082840d000 [pid 5069] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152 [pid 5069] munmap(0x7f082840d000, 138412032) = 0 [ 62.463618][ T5066] syz-executor101 (5066): drop_caches: 3 [ 62.482755][ T5067] syz-executor101 (5067): drop_caches: 3 [pid 5069] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 6 [pid 5069] ioctl(6, LOOP_SET_FD, 5 [pid 5067] <... sendfile resumed> => [640], 571) = 518 [pid 5069] <... ioctl resumed>) = 0 [pid 5069] close(5) = 0 [pid 5067] memfd_create("syzkaller", 0) = 5 [pid 5067] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5069] mkdir("./file0", 0777 [pid 5067] <... mmap resumed>) = 0x7f082840d000 [ 62.506918][ T5069] loop3: detected capacity change from 0 to 4096 [pid 5069] <... mkdir resumed>) = 0 [pid 5070] <... sendfile resumed> => [640], 571) = 518 [pid 5069] mount("/dev/loop3", "./file0", "ntfs", 0, "errors=continue,errors=recover,utf8,errors=recover,fmask=00000000000000000000377,dmask=0000000000400"... [pid 5070] memfd_create("syzkaller", 0 [ 62.574908][ T5070] syz-executor101 (5070): drop_caches: 3 [ 62.584787][ T5069] ntfs: (device loop3): parse_options(): Option utf8 is no longer supported, using option nls=utf8. Please use option nls=utf8 in the future and make sure utf8 is compiled either as a module or into the kernel. [ 62.585963][ T5064] syz-executor101 (5064): drop_caches: 3 [pid 5067] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5070] <... memfd_create resumed>) = 5 [pid 5067] <... write resumed>) = 2097152 [pid 5067] munmap(0x7f082840d000, 138412032 [pid 5070] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f082840d000 [pid 5067] <... munmap resumed>) = 0 [pid 5067] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 6 [pid 5067] ioctl(6, LOOP_SET_FD, 5 [ 62.636994][ T5069] ntfs: (device loop3): read_ntfs_boot_sector(): Primary boot sector is invalid. [ 62.648744][ T5069] ntfs: (device loop3): read_ntfs_boot_sector(): Hot-fix: Recovering invalid primary boot sector from backup copy. [pid 5070] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5067] <... ioctl resumed>) = 0 [pid 5067] close(5) = 0 [ 62.691325][ T5067] loop2: detected capacity change from 0 to 4096 [ 62.700411][ T5069] ntfs: (device loop3): ntfs_mapping_pairs_decompress(): Corrupt attribute. [ 62.716784][ T5069] ntfs: (device loop3): ntfs_read_block(): Failed to read from inode 0xa, attribute type 0x80, vcn 0x0, offset 0x0 because its location on disk could not be determined even after retrying (error code -5). [pid 5067] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5067] mount("/dev/loop2", "./file0", "ntfs", 0, "errors=continue,errors=recover,utf8,errors=recover,fmask=00000000000000000000377,dmask=0000000000400"... [pid 5070] <... write resumed>) = 2097152 [ 62.725489][ T5067] ntfs: (device loop2): parse_options(): Option utf8 is no longer supported, using option nls=utf8. Please use option nls=utf8 in the future and make sure utf8 is compiled either as a module or into the kernel. [ 62.761282][ T5069] ntfs: (device loop3): ntfs_mapping_pairs_decompress(): Corrupt attribute. [ 62.770132][ T5069] ntfs: (device loop3): ntfs_read_block(): Failed to read from inode 0xa, attribute type 0x80, vcn 0x0, offset 0x200 because its location on disk could not be determined even after retrying (error code -5). [pid 5070] munmap(0x7f082840d000, 138412032) = 0 [pid 5070] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 6 [pid 5070] ioctl(6, LOOP_SET_FD, 5 [pid 5069] <... mount resumed>) = 0 [pid 5069] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 5 [pid 5069] chdir("./file0") = 0 [pid 5069] ioctl(6, LOOP_CLR_FD) = 0 [pid 5070] <... ioctl resumed>) = 0 [pid 5069] close(6 [pid 5070] close(5 [pid 5069] <... close resumed>) = 0 [pid 5070] <... close resumed>) = 0 [pid 5070] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5070] mount("/dev/loop4", "./file0", "ntfs", 0, "errors=continue,errors=recover,utf8,errors=recover,fmask=00000000000000000000377,dmask=0000000000400"... [pid 5069] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 6 [ 62.790889][ T5069] ntfs: (device loop3): ntfs_mapping_pairs_decompress(): Corrupt attribute. [ 62.803056][ T5069] ntfs: (device loop3): ntfs_read_block(): Failed to read from inode 0xa, attribute type 0x80, vcn 0x1, offset 0x0 because its location on disk could not be determined even after retrying (error code -5). [ 62.816550][ T5067] ntfs: volume version 3.1. [ 62.826023][ T5069] ntfs: volume version 3.1. [ 62.831597][ T5070] loop4: detected capacity change from 0 to 4096 [pid 5069] write(6, "t", 1) = 1 [pid 5069] exit_group(0) = ? [pid 5069] +++ exited with 0 +++ [pid 5062] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5069, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=35 /* 0.35 s */} --- [pid 5062] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5062] ioctl(3, LOOP_CLR_FD) = 0 [pid 5062] close(3) = 0 [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555646650) = 5073 ./strace-static-x86_64: Process 5073 attached [pid 5073] set_robust_list(0x555555646660, 24) = 0 [pid 5073] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5073] setpgid(0, 0) = 0 [pid 5073] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5067] <... mount resumed>) = 0 [pid 5073] <... openat resumed>) = 3 [pid 5067] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5073] write(3, "1000", 4 [pid 5067] <... openat resumed>) = 5 [pid 5067] chdir("./file0") = 0 [ 62.878197][ T5070] ntfs: volume version 3.1. [pid 5067] ioctl(6, LOOP_CLR_FD) = 0 [pid 5073] <... write resumed>) = 4 [pid 5073] close(3) = 0 [pid 5067] close(6) = 0 [pid 5073] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5073] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5067] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5073] <... openat resumed>) = 4 [pid 5073] sendfile(4, 3, [122] [pid 5064] <... sendfile resumed> => [640], 571) = 518 [pid 5064] memfd_create("syzkaller", 0 [pid 5071] <... sendfile resumed> => [640], 571) = 518 [pid 5070] <... mount resumed>) = 0 [pid 5067] <... openat resumed>) = 6 [pid 5066] <... sendfile resumed> => [640], 571) = 518 [pid 5064] <... memfd_create resumed>) = 5 [pid 5070] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5066] memfd_create("syzkaller", 0 [pid 5071] memfd_create("syzkaller", 0 [pid 5070] <... openat resumed>) = 5 [pid 5064] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5070] chdir("./file0" [pid 5067] write(6, "t", 1 [pid 5066] <... memfd_create resumed>) = 5 [pid 5071] <... memfd_create resumed>) = 5 [pid 5070] <... chdir resumed>) = 0 [pid 5066] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5064] <... mmap resumed>) = 0x7f082840d000 [pid 5071] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5070] ioctl(6, LOOP_CLR_FD [ 62.911463][ T5066] syz-executor101 (5066): drop_caches: 3 [ 62.912534][ T5071] syz-executor101 (5071): drop_caches: 3 [ 62.928389][ T5064] syz-executor101 (5064): drop_caches: 3 [pid 5066] <... mmap resumed>) = 0x7f082840d000 [pid 5070] <... ioctl resumed>) = 0 [pid 5067] <... write resumed>) = 1 [pid 5067] exit_group(0) = ? [pid 5067] +++ exited with 0 +++ [pid 5071] <... mmap resumed>) = 0x7f082840d000 [pid 5070] close(6 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5067, si_uid=0, si_status=0, si_utime=0, si_stime=37 /* 0.37 s */} --- [pid 5070] <... close resumed>) = 0 [pid 5070] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5061] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5070] <... openat resumed>) = 6 [pid 5061] <... openat resumed>) = 3 [pid 5061] ioctl(3, LOOP_CLR_FD) = 0 [pid 5066] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5064] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5061] close(3 [pid 5071] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5070] write(6, "t", 1 [pid 5061] <... close resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] <... write resumed>) = 1 [pid 5070] exit_group(0./strace-static-x86_64: Process 5074 attached ) = ? [pid 5061] <... clone resumed>, child_tidptr=0x555555646650) = 5074 [pid 5070] +++ exited with 0 +++ [pid 5074] set_robust_list(0x555555646660, 24 [pid 5065] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5070, si_uid=0, si_status=0, si_utime=0, si_stime=42 /* 0.42 s */} --- [pid 5065] restart_syscall(<... resuming interrupted clone ...> [pid 5074] <... set_robust_list resumed>) = 0 [pid 5074] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5065] <... restart_syscall resumed>) = 0 [pid 5074] <... prctl resumed>) = 0 [pid 5065] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5074] setpgid(0, 0 [pid 5065] ioctl(3, LOOP_CLR_FD [pid 5074] <... setpgid resumed>) = 0 [pid 5074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5065] <... ioctl resumed>) = 0 [pid 5065] close(3) = 0 [pid 5074] <... openat resumed>) = 3 [pid 5065] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5075 attached [pid 5074] write(3, "1000", 4 [pid 5065] <... clone resumed>, child_tidptr=0x555555646650) = 5075 [pid 5074] <... write resumed>) = 4 [pid 5074] close(3 [pid 5075] set_robust_list(0x555555646660, 24) = 0 [pid 5075] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5075] setpgid(0, 0) = 0 [pid 5075] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5074] <... close resumed>) = 0 [pid 5075] <... openat resumed>) = 3 [pid 5066] <... write resumed>) = 2097152 [pid 5075] write(3, "1000", 4 [pid 5074] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5075] <... write resumed>) = 4 [pid 5075] close(3 [pid 5074] <... openat resumed>) = 3 [pid 5075] <... close resumed>) = 0 [pid 5075] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5074] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5066] munmap(0x7f082840d000, 138412032 [pid 5075] <... openat resumed>) = 3 [pid 5074] <... openat resumed>) = 4 [pid 5075] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5074] sendfile(4, 3, [122] [pid 5066] <... munmap resumed>) = 0 [pid 5075] <... openat resumed>) = 4 [pid 5075] sendfile(4, 3, [122] [pid 5066] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 6 [pid 5066] ioctl(6, LOOP_SET_FD, 5 [pid 5064] <... write resumed>) = 2097152 [pid 5066] <... ioctl resumed>) = 0 [pid 5066] close(5) = 0 [pid 5066] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5071] <... write resumed>) = 2097152 [pid 5066] mount("/dev/loop1", "./file0", "ntfs", 0, "errors=continue,errors=recover,utf8,errors=recover,fmask=00000000000000000000377,dmask=0000000000400"... [pid 5064] munmap(0x7f082840d000, 138412032 [pid 5071] munmap(0x7f082840d000, 138412032) = 0 [pid 5071] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 6 [pid 5064] <... munmap resumed>) = 0 [pid 5071] ioctl(6, LOOP_SET_FD, 5 [ 63.115979][ T5066] loop1: detected capacity change from 0 to 4096 [ 63.146396][ T5073] syz-executor101 (5073): drop_caches: 3 [pid 5064] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5064] ioctl(6, LOOP_SET_FD, 5 [pid 5071] <... ioctl resumed>) = 0 [pid 5071] close(5) = 0 [pid 5064] <... ioctl resumed>) = 0 [pid 5064] close(5 [pid 5071] mkdir("./file0", 0777 [pid 5064] <... close resumed>) = 0 [pid 5071] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5064] mkdir("./file0", 0777 [pid 5071] mount("/dev/loop5", "./file0", "ntfs", 0, "errors=continue,errors=recover,utf8,errors=recover,fmask=00000000000000000000377,dmask=0000000000400"... [pid 5064] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5064] mount("/dev/loop0", "./file0", "ntfs", 0, "errors=continue,errors=recover,utf8,errors=recover,fmask=00000000000000000000377,dmask=0000000000400"... [pid 5066] <... mount resumed>) = 0 [pid 5066] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 5 [pid 5066] chdir("./file0") = 0 [pid 5066] ioctl(6, LOOP_CLR_FD) = 0 [ 63.165783][ T5071] loop5: detected capacity change from 0 to 4096 [ 63.169981][ T5066] ntfs: volume version 3.1. [ 63.179311][ T5064] loop0: detected capacity change from 0 to 4096 [pid 5066] close(6) = 0 [pid 5066] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 6 [pid 5066] write(6, "t", 1) = 1 [pid 5066] exit_group(0) = ? [pid 5066] +++ exited with 0 +++ [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5066, si_uid=0, si_status=0, si_utime=0, si_stime=43 /* 0.43 s */} --- [pid 5060] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5060] ioctl(3, LOOP_CLR_FD) = 0 [pid 5060] close(3) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5076 attached [pid 5076] set_robust_list(0x555555646660, 24) = 0 [pid 5076] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5076] setpgid(0, 0 [pid 5071] <... mount resumed>) = 0 [pid 5071] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5060] <... clone resumed>, child_tidptr=0x555555646650) = 5076 [pid 5071] <... openat resumed>) = 5 [ 63.244220][ T5071] ntfs: volume version 3.1. [ 63.255519][ T5064] ntfs: volume version 3.1. [pid 5071] chdir("./file0" [pid 5076] <... setpgid resumed>) = 0 [pid 5071] <... chdir resumed>) = 0 [pid 5076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5064] <... mount resumed>) = 0 [pid 5076] write(3, "1000", 4 [pid 5071] ioctl(6, LOOP_CLR_FD [pid 5076] <... write resumed>) = 4 [pid 5076] close(3 [pid 5071] <... ioctl resumed>) = 0 [pid 5076] <... close resumed>) = 0 [pid 5076] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5071] close(6 [pid 5064] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5076] <... openat resumed>) = 3 [pid 5071] <... close resumed>) = 0 [pid 5076] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5071] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5064] <... openat resumed>) = 5 [pid 5076] <... openat resumed>) = 4 [pid 5076] sendfile(4, 3, [122] [pid 5064] chdir("./file0") = 0 [pid 5064] ioctl(6, LOOP_CLR_FD) = 0 [pid 5064] close(6) = 0 [pid 5064] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5071] <... openat resumed>) = 6 [pid 5071] write(6, "t", 1 [pid 5064] <... openat resumed>) = 6 [ 63.357129][ T5074] syz-executor101 (5074): drop_caches: 3 [ 63.380602][ T5073] syz-executor101 (5073): drop_caches: 3 [pid 5064] write(6, "t", 1 [pid 5073] <... sendfile resumed> => [693], 571) = 571 [pid 5071] <... write resumed>) = 1 [pid 5064] <... write resumed>) = 1 [pid 5073] memfd_create("syzkaller", 0 [pid 5071] exit_group(0 [pid 5064] exit_group(0 [pid 5073] <... memfd_create resumed>) = 5 [pid 5064] <... exit_group resumed>) = ? [pid 5064] +++ exited with 0 +++ [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5064, si_uid=0, si_status=0, si_utime=0, si_stime=43 /* 0.43 s */} --- [pid 5073] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5071] <... exit_group resumed>) = ? [pid 5059] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5059] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5059] ioctl(3, LOOP_CLR_FD) = 0 [pid 5059] close(3 [pid 5073] <... mmap resumed>) = 0x7f082840d000 [pid 5059] <... close resumed>) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5077 attached [pid 5071] +++ exited with 0 +++ [pid 5077] set_robust_list(0x555555646660, 24 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5071, si_uid=0, si_status=0, si_utime=0, si_stime=36 /* 0.36 s */} --- [pid 5059] <... clone resumed>, child_tidptr=0x555555646650) = 5077 [pid 5077] <... set_robust_list resumed>) = 0 [pid 5077] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5068] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5068] ioctl(3, LOOP_CLR_FD) = 0 [pid 5077] setpgid(0, 0 [pid 5068] close(3 [pid 5077] <... setpgid resumed>) = 0 [pid 5068] <... close resumed>) = 0 [pid 5077] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5077] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5078 attached [ 63.423334][ T5075] syz-executor101 (5075): drop_caches: 3 [pid 5077] write(3, "1000", 4 [pid 5078] set_robust_list(0x555555646660, 24 [pid 5077] <... write resumed>) = 4 [pid 5068] <... clone resumed>, child_tidptr=0x555555646650) = 5078 [pid 5077] close(3 [pid 5078] <... set_robust_list resumed>) = 0 [pid 5078] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5077] <... close resumed>) = 0 [pid 5078] setpgid(0, 0) = 0 [pid 5077] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5077] <... openat resumed>) = 3 [pid 5077] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5078] <... openat resumed>) = 3 [pid 5078] write(3, "1000", 4 [pid 5077] sendfile(4, 3, [122] [pid 5078] <... write resumed>) = 4 [pid 5078] close(3) = 0 [pid 5078] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5078] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5078] sendfile(4, 3, [122] [pid 5073] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152 [pid 5073] munmap(0x7f082840d000, 138412032) = 0 [pid 5073] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 6 [pid 5073] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5073] ioctl(6, LOOP_CLR_FD) = 0 [pid 5073] ioctl(6, LOOP_SET_FD, 5 [pid 5074] <... sendfile resumed> => [693], 571) = 571 [pid 5074] memfd_create("syzkaller", 0 [pid 5073] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5073] close(6 [pid 5074] <... memfd_create resumed>) = 5 [pid 5074] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5073] <... close resumed>) = 0 [ 63.666412][ T5074] syz-executor101 (5074): drop_caches: 3 [ 63.669022][ T5076] syz-executor101 (5076): drop_caches: 3 [pid 5074] <... mmap resumed>) = 0x7f082840d000 [pid 5073] close(5 [pid 5075] <... sendfile resumed> => [693], 571) = 571 [pid 5075] memfd_create("syzkaller", 0 [pid 5073] <... close resumed>) = 0 [pid 5073] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5074] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5075] <... memfd_create resumed>) = 5 [ 63.735983][ T5075] syz-executor101 (5075): drop_caches: 3 [pid 5075] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f082840d000 [pid 5073] <... openat resumed>) = 5 [ 63.796136][ T5078] syz-executor101 (5078): drop_caches: 3 [ 63.805802][ T5077] syz-executor101 (5077): drop_caches: 3 [pid 5073] write(5, "t", 1 [pid 5074] <... write resumed>) = 2097152 [pid 5075] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5074] munmap(0x7f082840d000, 138412032) = 0 [pid 5073] <... write resumed>) = 1 [pid 5073] exit_group(0) = ? [pid 5073] +++ exited with 0 +++ [pid 5062] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5073, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=19 /* 0.19 s */} --- [pid 5062] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5074] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5062] <... openat resumed>) = 3 [pid 5062] ioctl(3, LOOP_CLR_FD [pid 5074] <... openat resumed>) = 6 [pid 5062] <... ioctl resumed>) = 0 [pid 5074] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5062] close(3) = 0 [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555646650) = 5079 ./strace-static-x86_64: Process 5079 attached [pid 5074] ioctl(6, LOOP_CLR_FD [pid 5079] set_robust_list(0x555555646660, 24 [pid 5074] <... ioctl resumed>) = 0 [pid 5079] <... set_robust_list resumed>) = 0 [pid 5079] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5079] setpgid(0, 0) = 0 [pid 5074] ioctl(6, LOOP_SET_FD, 5 [pid 5079] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5076] <... sendfile resumed> => [693], 571) = 571 [pid 5074] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5074] close(6) = 0 [pid 5074] close(5 [pid 5079] <... openat resumed>) = 3 [pid 5079] write(3, "1000", 4) = 4 [ 63.911366][ T5076] syz-executor101 (5076): drop_caches: 3 [pid 5079] close(3 [pid 5076] memfd_create("syzkaller", 0 [pid 5075] <... write resumed>) = 2097152 [pid 5079] <... close resumed>) = 0 [pid 5079] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5079] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5076] <... memfd_create resumed>) = 5 [pid 5075] munmap(0x7f082840d000, 138412032 [pid 5074] <... close resumed>) = 0 [pid 5079] <... openat resumed>) = 4 [pid 5076] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5075] <... munmap resumed>) = 0 [pid 5079] sendfile(4, 3, [122] [pid 5076] <... mmap resumed>) = 0x7f082840d000 [pid 5075] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 6 [pid 5075] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5075] ioctl(6, LOOP_CLR_FD) = 0 [pid 5075] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5075] close(6) = 0 [pid 5075] close(5 [pid 5074] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5074] write(5, "t", 1 [pid 5075] <... close resumed>) = 0 [pid 5075] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5074] <... write resumed>) = 1 [pid 5074] exit_group(0 [pid 5076] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5075] write(5, "t", 1 [pid 5074] <... exit_group resumed>) = ? [pid 5074] +++ exited with 0 +++ [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5074, si_uid=0, si_status=0, si_utime=0, si_stime=26 /* 0.26 s */} --- [pid 5061] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5061] ioctl(3, LOOP_CLR_FD) = 0 [pid 5061] close(3) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5075] <... write resumed>) = 1 ./strace-static-x86_64: Process 5080 attached [pid 5075] exit_group(0 [pid 5080] set_robust_list(0x555555646660, 24 [pid 5075] <... exit_group resumed>) = ? [pid 5080] <... set_robust_list resumed>) = 0 [pid 5075] +++ exited with 0 +++ [pid 5080] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5065] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5075, si_uid=0, si_status=0, si_utime=0, si_stime=28 /* 0.28 s */} --- [pid 5080] setpgid(0, 0 [pid 5065] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5065] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5065] ioctl(3, LOOP_CLR_FD) = 0 [pid 5061] <... clone resumed>, child_tidptr=0x555555646650) = 5080 [pid 5065] close(3 [pid 5080] <... setpgid resumed>) = 0 [pid 5080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5065] <... close resumed>) = 0 [pid 5065] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5080] write(3, "1000", 4./strace-static-x86_64: Process 5081 attached [pid 5081] set_robust_list(0x555555646660, 24 [pid 5080] <... write resumed>) = 4 [pid 5076] <... write resumed>) = 2097152 [pid 5065] <... clone resumed>, child_tidptr=0x555555646650) = 5081 [pid 5081] <... set_robust_list resumed>) = 0 [pid 5080] close(3 [pid 5081] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5080] <... close resumed>) = 0 [pid 5081] <... prctl resumed>) = 0 [ 64.116013][ T5077] syz-executor101 (5077): drop_caches: 3 [ 64.128089][ T5078] syz-executor101 (5078): drop_caches: 3 [pid 5080] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5081] setpgid(0, 0 [pid 5080] <... openat resumed>) = 3 [pid 5080] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5077] <... sendfile resumed> => [693], 571) = 571 [pid 5077] memfd_create("syzkaller", 0 [pid 5081] <... setpgid resumed>) = 0 [pid 5080] <... openat resumed>) = 4 [pid 5078] <... sendfile resumed> => [693], 571) = 571 [pid 5077] <... memfd_create resumed>) = 5 [pid 5076] munmap(0x7f082840d000, 138412032 [pid 5081] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5080] sendfile(4, 3, [122] [pid 5077] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5081] <... openat resumed>) = 3 [pid 5077] <... mmap resumed>) = 0x7f082840d000 [pid 5081] write(3, "1000", 4) = 4 [pid 5078] memfd_create("syzkaller", 0 [pid 5076] <... munmap resumed>) = 0 [pid 5081] close(3) = 0 [pid 5081] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5081] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5078] <... memfd_create resumed>) = 5 [pid 5076] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5078] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5076] <... openat resumed>) = 6 [pid 5078] <... mmap resumed>) = 0x7f082840d000 [pid 5076] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5076] ioctl(6, LOOP_CLR_FD [pid 5081] <... openat resumed>) = 4 [pid 5076] <... ioctl resumed>) = 0 [pid 5081] sendfile(4, 3, [122] [pid 5076] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5076] close(6) = 0 [ 64.156337][ T5079] syz-executor101 (5079): drop_caches: 3 [pid 5076] close(5 [pid 5078] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5077] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5076] <... close resumed>) = 0 [pid 5076] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5076] write(5, "t", 1) = 1 [pid 5076] exit_group(0) = ? [pid 5076] +++ exited with 0 +++ [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5076, si_uid=0, si_status=0, si_utime=0, si_stime=21 /* 0.21 s */} --- [pid 5060] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5060] ioctl(3, LOOP_CLR_FD) = 0 [pid 5060] close(3) = 0 [pid 5077] <... write resumed>) = 2097152 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555646650) = 5082 ./strace-static-x86_64: Process 5082 attached [pid 5082] set_robust_list(0x555555646660, 24 [pid 5078] <... write resumed>) = 2097152 [pid 5077] munmap(0x7f082840d000, 138412032 [pid 5082] <... set_robust_list resumed>) = 0 [pid 5082] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5077] <... munmap resumed>) = 0 [pid 5082] setpgid(0, 0 [pid 5078] munmap(0x7f082840d000, 138412032) = 0 [pid 5082] <... setpgid resumed>) = 0 [pid 5077] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5077] <... openat resumed>) = 6 [pid 5082] <... openat resumed>) = 3 [pid 5078] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 6 [pid 5078] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5078] ioctl(6, LOOP_CLR_FD) = 0 [pid 5077] ioctl(6, LOOP_SET_FD, 5 [pid 5082] write(3, "1000", 4 [pid 5077] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5082] <... write resumed>) = 4 [pid 5078] ioctl(6, LOOP_SET_FD, 5 [pid 5077] ioctl(6, LOOP_CLR_FD [pid 5078] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5082] close(3 [pid 5078] close(6 [pid 5077] <... ioctl resumed>) = 0 [pid 5078] <... close resumed>) = 0 [pid 5082] <... close resumed>) = 0 [pid 5078] close(5 [pid 5082] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5077] ioctl(6, LOOP_SET_FD, 5 [pid 5082] <... openat resumed>) = 3 [pid 5077] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5082] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5077] close(6) = 0 [pid 5082] sendfile(4, 3, [122] [pid 5077] close(5 [pid 5078] <... close resumed>) = 0 [pid 5078] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5078] write(5, "t", 1) = 1 [pid 5078] exit_group(0) = ? [pid 5078] +++ exited with 0 +++ [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5078, si_uid=0, si_status=0, si_utime=0, si_stime=20 /* 0.20 s */} --- [pid 5077] <... close resumed>) = 0 [pid 5068] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5077] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5077] write(5, "t", 1 [pid 5068] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5068] ioctl(3, LOOP_CLR_FD) = 0 [pid 5068] close(3) = 0 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555646650) = 5083 ./strace-static-x86_64: Process 5083 attached [pid 5083] set_robust_list(0x555555646660, 24) = 0 [pid 5083] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5077] <... write resumed>) = 1 [pid 5083] <... prctl resumed>) = 0 [pid 5079] <... sendfile resumed> => [693], 571) = 571 [pid 5077] exit_group(0 [pid 5083] setpgid(0, 0) = 0 [pid 5079] memfd_create("syzkaller", 0 [pid 5077] <... exit_group resumed>) = ? [pid 5083] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5077] +++ exited with 0 +++ [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5077, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=25 /* 0.25 s */} --- [pid 5083] write(3, "1000", 4) = 4 [pid 5083] close(3 [pid 5079] <... memfd_create resumed>) = 5 [pid 5083] <... close resumed>) = 0 [pid 5079] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5059] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5083] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5059] ioctl(3, LOOP_CLR_FD) = 0 [pid 5083] <... openat resumed>) = 3 [pid 5079] <... mmap resumed>) = 0x7f082840d000 [pid 5059] close(3 [pid 5083] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5059] <... close resumed>) = 0 [pid 5083] <... openat resumed>) = 4 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555646650) = 5085 ./strace-static-x86_64: Process 5085 attached [pid 5083] sendfile(4, 3, [122] [pid 5085] set_robust_list(0x555555646660, 24) = 0 [ 64.474861][ T5080] syz-executor101 (5080): drop_caches: 3 [ 64.495416][ T5079] syz-executor101 (5079): drop_caches: 3 [ 64.500045][ T5081] syz-executor101 (5081): drop_caches: 3 [pid 5085] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5085] setpgid(0, 0) = 0 [pid 5085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5085] write(3, "1000", 4) = 4 [pid 5085] close(3) = 0 [pid 5085] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5085] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5085] sendfile(4, 3, [122] [pid 5079] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152 [ 64.669495][ T5082] syz-executor101 (5082): drop_caches: 3 [pid 5079] munmap(0x7f082840d000, 138412032) = 0 [pid 5079] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 6 [pid 5079] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5079] ioctl(6, LOOP_CLR_FD) = 0 [pid 5079] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5079] close(6) = 0 [pid 5079] close(5) = 0 [pid 5079] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5080] <... sendfile resumed> => [693], 571) = 571 [pid 5079] <... openat resumed>) = 5 [pid 5079] write(5, "t", 1 [pid 5080] memfd_create("syzkaller", 0) = 5 [pid 5079] <... write resumed>) = 1 [pid 5080] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5079] exit_group(0) = ? [pid 5080] <... mmap resumed>) = 0x7f082840d000 [pid 5079] +++ exited with 0 +++ [pid 5081] <... sendfile resumed> => [693], 571) = 571 [pid 5062] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5079, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=24 /* 0.24 s */} --- [ 64.788470][ T5080] syz-executor101 (5080): drop_caches: 3 [ 64.815059][ T5083] syz-executor101 (5083): drop_caches: 3 [ 64.824185][ T5081] syz-executor101 (5081): drop_caches: 3 [pid 5081] memfd_create("syzkaller", 0) = 5 [pid 5081] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f082840d000 [pid 5062] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5080] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5062] ioctl(3, LOOP_CLR_FD) = 0 [ 64.853788][ T5085] syz-executor101 (5085): drop_caches: 3 [pid 5062] close(3 [pid 5081] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5062] <... close resumed>) = 0 [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555646650) = 5086 ./strace-static-x86_64: Process 5086 attached [pid 5086] set_robust_list(0x555555646660, 24) = 0 [pid 5086] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5082] <... sendfile resumed> => [693], 571) = 571 [pid 5080] <... write resumed>) = 2097152 [pid 5086] <... prctl resumed>) = 0 [pid 5086] setpgid(0, 0) = 0 [pid 5080] munmap(0x7f082840d000, 138412032 [pid 5086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5082] memfd_create("syzkaller", 0 [pid 5086] write(3, "1000", 4) = 4 [pid 5086] close(3 [pid 5082] <... memfd_create resumed>) = 5 [pid 5081] <... write resumed>) = 2097152 [pid 5080] <... munmap resumed>) = 0 [pid 5086] <... close resumed>) = 0 [pid 5082] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f082840d000 [pid 5086] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5080] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 6 [pid 5080] ioctl(6, LOOP_SET_FD, 5 [pid 5086] <... openat resumed>) = 3 [pid 5081] munmap(0x7f082840d000, 138412032 [pid 5080] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5086] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5081] <... munmap resumed>) = 0 [pid 5081] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5086] <... openat resumed>) = 4 [pid 5086] sendfile(4, 3, [122] [pid 5080] ioctl(6, LOOP_CLR_FD) = 0 [ 64.953035][ T5082] syz-executor101 (5082): drop_caches: 3 [pid 5081] <... openat resumed>) = 6 [pid 5080] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5081] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5081] ioctl(6, LOOP_CLR_FD) = 0 [pid 5081] ioctl(6, LOOP_SET_FD, 5 [pid 5080] close(6 [pid 5081] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5081] close(6) = 0 [pid 5080] <... close resumed>) = 0 [pid 5081] close(5 [pid 5082] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5080] close(5 [pid 5081] <... close resumed>) = 0 [pid 5081] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5081] write(5, "t", 1 [pid 5080] <... close resumed>) = 0 [pid 5080] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5081] <... write resumed>) = 1 [pid 5081] exit_group(0 [pid 5080] write(5, "t", 1 [pid 5081] <... exit_group resumed>) = ? [pid 5081] +++ exited with 0 +++ [pid 5065] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5081, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=23 /* 0.23 s */} --- [pid 5065] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5065] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5080] <... write resumed>) = 1 [pid 5065] ioctl(3, LOOP_CLR_FD [pid 5080] exit_group(0 [pid 5065] <... ioctl resumed>) = 0 [pid 5080] <... exit_group resumed>) = ? [pid 5065] close(3) = 0 [pid 5065] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5080] +++ exited with 0 +++ [pid 5065] <... clone resumed>, child_tidptr=0x555555646650) = 5087 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5080, si_uid=0, si_status=0, si_utime=0, si_stime=20 /* 0.20 s */} --- [pid 5061] restart_syscall(<... resuming interrupted clone ...> [pid 5082] <... write resumed>) = 2097152 [pid 5061] <... restart_syscall resumed>) = 0 ./strace-static-x86_64: Process 5087 attached [pid 5087] set_robust_list(0x555555646660, 24) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5087] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] <... openat resumed>) = 3 [pid 5082] munmap(0x7f082840d000, 138412032 [pid 5087] <... prctl resumed>) = 0 [pid 5061] ioctl(3, LOOP_CLR_FD) = 0 [pid 5061] close(3) = 0 [pid 5087] setpgid(0, 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5087] <... setpgid resumed>) = 0 [pid 5087] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5061] <... clone resumed>, child_tidptr=0x555555646650) = 5088 [pid 5087] <... openat resumed>) = 3 [pid 5087] write(3, "1000", 4./strace-static-x86_64: Process 5088 attached ) = 4 [pid 5085] <... sendfile resumed> => [693], 571) = 571 [pid 5082] <... munmap resumed>) = 0 [pid 5085] memfd_create("syzkaller", 0 [pid 5082] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5088] set_robust_list(0x555555646660, 24 [pid 5085] <... memfd_create resumed>) = 5 [pid 5088] <... set_robust_list resumed>) = 0 [pid 5085] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5082] <... openat resumed>) = 6 [pid 5087] close(3 [pid 5085] <... mmap resumed>) = 0x7f082840d000 [pid 5088] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5087] <... close resumed>) = 0 [pid 5082] ioctl(6, LOOP_SET_FD, 5 [pid 5088] <... prctl resumed>) = 0 [pid 5087] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5082] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5088] setpgid(0, 0 [pid 5087] <... openat resumed>) = 3 [pid 5082] ioctl(6, LOOP_CLR_FD [pid 5088] <... setpgid resumed>) = 0 [pid 5087] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5082] <... ioctl resumed>) = 0 [pid 5088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5087] <... openat resumed>) = 4 [pid 5087] sendfile(4, 3, [122] [pid 5088] <... openat resumed>) = 3 [pid 5088] write(3, "1000", 4 [pid 5083] <... sendfile resumed> => [693], 571) = 571 [pid 5082] ioctl(6, LOOP_SET_FD, 5 [pid 5088] <... write resumed>) = 4 [pid 5083] memfd_create("syzkaller", 0 [pid 5082] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5088] close(3 [pid 5082] close(6 [pid 5088] <... close resumed>) = 0 [pid 5088] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5083] <... memfd_create resumed>) = 5 [pid 5082] <... close resumed>) = 0 [ 65.131479][ T5085] syz-executor101 (5085): drop_caches: 3 [ 65.157953][ T5083] syz-executor101 (5083): drop_caches: 3 [pid 5088] <... openat resumed>) = 3 [pid 5083] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5082] close(5 [pid 5083] <... mmap resumed>) = 0x7f082840d000 [pid 5088] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5085] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5088] sendfile(4, 3, [122] [pid 5082] <... close resumed>) = 0 [pid 5082] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5083] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [ 65.244072][ T5086] syz-executor101 (5086): drop_caches: 3 [pid 5082] write(5, "t", 1) = 1 [pid 5082] exit_group(0) = ? [pid 5082] +++ exited with 0 +++ [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5082, si_uid=0, si_status=0, si_utime=0, si_stime=26 /* 0.26 s */} --- [pid 5060] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5083] <... write resumed>) = 2097152 [pid 5083] munmap(0x7f082840d000, 138412032 [pid 5060] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5060] ioctl(3, LOOP_CLR_FD) = 0 [pid 5060] close(3) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5085] <... write resumed>) = 2097152 [pid 5060] <... clone resumed>, child_tidptr=0x555555646650) = 5089 [pid 5085] munmap(0x7f082840d000, 138412032./strace-static-x86_64: Process 5089 attached [pid 5089] set_robust_list(0x555555646660, 24 [pid 5083] <... munmap resumed>) = 0 [pid 5089] <... set_robust_list resumed>) = 0 [pid 5083] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5085] <... munmap resumed>) = 0 [pid 5083] <... openat resumed>) = 6 [pid 5085] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5083] ioctl(6, LOOP_SET_FD, 5 [pid 5085] <... openat resumed>) = 6 [pid 5083] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5089] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5085] ioctl(6, LOOP_SET_FD, 5 [pid 5083] ioctl(6, LOOP_CLR_FD [pid 5089] <... prctl resumed>) = 0 [pid 5085] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5083] <... ioctl resumed>) = 0 [pid 5089] setpgid(0, 0) = 0 [pid 5089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5089] write(3, "1000", 4 [pid 5085] ioctl(6, LOOP_CLR_FD [pid 5083] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5089] <... write resumed>) = 4 [pid 5085] <... ioctl resumed>) = 0 [pid 5089] close(3 [pid 5083] close(6) = 0 [pid 5089] <... close resumed>) = 0 [pid 5083] close(5 [pid 5089] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5085] ioctl(6, LOOP_SET_FD, 5 [pid 5089] <... openat resumed>) = 3 [pid 5085] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5085] close(6 [pid 5089] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5085] <... close resumed>) = 0 [pid 5085] close(5 [pid 5089] <... openat resumed>) = 4 [pid 5089] sendfile(4, 3, [122] [pid 5085] <... close resumed>) = 0 [pid 5085] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5085] write(5, "t", 1 [pid 5083] <... close resumed>) = 0 [pid 5083] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000) = 5 [pid 5083] write(5, "t", 1 [pid 5085] <... write resumed>) = 1 [pid 5085] exit_group(0) = ? [pid 5085] +++ exited with 0 +++ [pid 5059] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5085, si_uid=0, si_status=0, si_utime=0, si_stime=23 /* 0.23 s */} --- [pid 5059] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 65.455652][ T5087] syz-executor101 (5087): drop_caches: 3 [ 65.492989][ T5088] syz-executor101 (5088): drop_caches: 3 [pid 5059] ioctl(3, LOOP_CLR_FD) = 0 [pid 5059] close(3) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5083] <... write resumed>) = 1 ./strace-static-x86_64: Process 5090 attached [pid 5090] set_robust_list(0x555555646660, 24 [pid 5059] <... clone resumed>, child_tidptr=0x555555646650) = 5090 [pid 5090] <... set_robust_list resumed>) = 0 [pid 5086] <... sendfile resumed> => [693], 571) = 571 [pid 5090] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5086] memfd_create("syzkaller", 0 [pid 5083] exit_group(0 [pid 5086] <... memfd_create resumed>) = 5 [pid 5083] <... exit_group resumed>) = ? [pid 5090] setpgid(0, 0 [pid 5086] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5083] +++ exited with 0 +++ [pid 5090] <... setpgid resumed>) = 0 [pid 5086] <... mmap resumed>) = 0x7f082840d000 [pid 5068] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5083, si_uid=0, si_status=0, si_utime=0, si_stime=21 /* 0.21 s */} --- [pid 5090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5068] restart_syscall(<... resuming interrupted clone ...> [pid 5090] <... openat resumed>) = 3 [pid 5068] <... restart_syscall resumed>) = 0 [pid 5068] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5068] ioctl(3, LOOP_CLR_FD [pid 5090] write(3, "1000", 4) = 4 [pid 5068] <... ioctl resumed>) = 0 [pid 5090] close(3) = 0 [pid 5068] close(3) = 0 [pid 5090] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [ 65.514628][ T5086] syz-executor101 (5086): drop_caches: 3 [pid 5068] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5090] <... openat resumed>) = 3 [pid 5068] <... clone resumed>, child_tidptr=0x555555646650) = 5091 [pid 5090] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 ./strace-static-x86_64: Process 5091 attached [pid 5090] sendfile(4, 3, [122] [pid 5091] set_robust_list(0x555555646660, 24) = 0 [pid 5091] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5091] setpgid(0, 0) = 0 [pid 5091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5091] write(3, "1000", 4) = 4 [pid 5091] close(3) = 0 [pid 5091] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5091] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5091] sendfile(4, 3, [122] [pid 5086] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152) = 2097152 [pid 5086] munmap(0x7f082840d000, 138412032) = 0 [pid 5086] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 6 [pid 5086] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5086] ioctl(6, LOOP_CLR_FD) = 0 [pid 5086] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5086] close(6) = 0 [pid 5086] close(5 [pid 5087] <... sendfile resumed> => [693], 571) = 571 [pid 5086] <... close resumed>) = 0 [pid 5088] <... sendfile resumed> => [693], 571) = 571 [pid 5087] memfd_create("syzkaller", 0 [pid 5088] memfd_create("syzkaller", 0 [pid 5087] <... memfd_create resumed>) = 5 [pid 5088] <... memfd_create resumed>) = 5 [pid 5087] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5088] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5087] <... mmap resumed>) = 0x7f082840d000 [pid 5086] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5088] <... mmap resumed>) = 0x7f082840d000 [pid 5086] <... openat resumed>) = 5 [pid 5086] write(5, "t", 1) = 1 [pid 5086] exit_group(0) = ? [pid 5086] +++ exited with 0 +++ [pid 5062] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5086, si_uid=0, si_status=0, si_utime=0, si_stime=22 /* 0.22 s */} --- [ 65.771275][ T5087] syz-executor101 (5087): drop_caches: 3 [ 65.790616][ T5088] syz-executor101 (5088): drop_caches: 3 [ 65.794385][ T5089] syz-executor101 (5089): drop_caches: 3 [pid 5062] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5062] ioctl(3, LOOP_CLR_FD [pid 5088] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5062] <... ioctl resumed>) = 0 [pid 5087] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5062] close(3) = 0 [ 65.840725][ T5091] syz-executor101 (5091): drop_caches: 3 [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555646650) = 5092 ./strace-static-x86_64: Process 5092 attached [pid 5092] set_robust_list(0x555555646660, 24) = 0 [pid 5092] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5092] setpgid(0, 0) = 0 [pid 5092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5092] write(3, "1000", 4) = 4 [pid 5092] close(3) = 0 [pid 5092] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5092] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5092] sendfile(4, 3, [122] [pid 5087] <... write resumed>) = 2097152 [pid 5088] <... write resumed>) = 2097152 [ 65.927814][ T5090] syz-executor101 (5090): drop_caches: 3 [pid 5087] munmap(0x7f082840d000, 138412032) = 0 [pid 5088] munmap(0x7f082840d000, 138412032 [pid 5087] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5088] <... munmap resumed>) = 0 [pid 5087] <... openat resumed>) = 6 [pid 5087] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5088] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5087] ioctl(6, LOOP_CLR_FD) = 0 [pid 5088] <... openat resumed>) = 6 [pid 5088] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5087] ioctl(6, LOOP_SET_FD, 5 [pid 5088] ioctl(6, LOOP_CLR_FD [pid 5087] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5088] <... ioctl resumed>) = 0 [pid 5087] close(6) = 0 [pid 5087] close(5 [pid 5088] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5088] close(6) = 0 [pid 5088] close(5) = 0 [pid 5089] <... sendfile resumed> => [693], 571) = 571 [pid 5087] <... close resumed>) = 0 [pid 5087] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5091] <... sendfile resumed> => [693], 571) = 571 [pid 5089] memfd_create("syzkaller", 0 [pid 5088] openat(AT_FDCWD, "./file1", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_NOATIME, 000 [pid 5087] <... openat resumed>) = 5 [pid 5087] write(5, "t", 1 [pid 5091] memfd_create("syzkaller", 0 [pid 5089] <... memfd_create resumed>) = 5 [pid 5088] <... openat resumed>) = 5 [pid 5088] write(5, "t", 1 [pid 5091] <... memfd_create resumed>) = 5 [pid 5089] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5091] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f082840d000 [pid 5089] <... mmap resumed>) = 0x7f082840d000 [ 66.078134][ T5089] syz-executor101 (5089): drop_caches: 3 [ 66.116049][ T5091] syz-executor101 (5091): drop_caches: 3 [pid 5087] <... write resumed>) = 1 [pid 5087] exit_group(0 [pid 5088] <... write resumed>) = 1 [pid 5087] <... exit_group resumed>) = ? [pid 5088] exit_group(0) = ? [pid 5087] +++ exited with 0 +++ [pid 5065] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5087, si_uid=0, si_status=0, si_utime=0, si_stime=23 /* 0.23 s */} --- [pid 5065] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5065] ioctl(3, LOOP_CLR_FD) = 0 [pid 5065] close(3 [pid 5088] +++ exited with 0 +++ [pid 5065] <... close resumed>) = 0 [pid 5091] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5088, si_uid=0, si_status=0, si_utime=0, si_stime=19 /* 0.19 s */} --- [pid 5065] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555646650) = 5093 [pid 5061] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5089] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x02\x02\x00\x00\x00\x00\x00\x00\x00\xf8\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x80\x00\x80\x00\xff\x0f\x00\x00\x00\x00\x00\x00\x10\x00\x00\x00\x00\x00\x00\x00\xff\x03\x00\x00\x00\x00\x00\x00\xb5\x0b\x00\x00\x04\x00\x00\x00\xf7\x9a\x81\x47\x2b\x73\xcf\x43\x00\x00\x00\x00\x0e\x1f\xbe\x71\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00"..., 2097152 [pid 5061] <... openat resumed>) = 3 [pid 5061] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5093 attached ) = 0 [pid 5093] set_robust_list(0x555555646660, 24 [pid 5061] close(3) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5093] <... set_robust_list resumed>) = 0 [pid 5091] <... write resumed>) = 2097152 [pid 5061] <... clone resumed>, child_tidptr=0x555555646650) = 5094 [pid 5091] munmap(0x7f082840d000, 138412032 [pid 5093] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5091] <... munmap resumed>) = 0 [pid 5091] openat(AT_FDCWD, "/dev/loop5", O_RDWR./strace-static-x86_64: Process 5094 attached [pid 5093] <... prctl resumed>) = 0 [pid 5094] set_robust_list(0x555555646660, 24 [pid 5093] setpgid(0, 0 [pid 5091] <... openat resumed>) = 6 [pid 5094] <... set_robust_list resumed>) = 0 [pid 5093] <... setpgid resumed>) = 0 [pid 5091] ioctl(6, LOOP_SET_FD, 5 [pid 5094] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5091] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5093] <... openat resumed>) = 3 [pid 5091] ioctl(6, LOOP_CLR_FD [pid 5093] write(3, "1000", 4 [pid 5091] <... ioctl resumed>) = 0 [pid 5093] <... write resumed>) = 4 [pid 5093] close(3) = 0 [pid 5093] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5093] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5093] sendfile(4, 3, [122]