./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3267143007 <...> Warning: Permanently added '10.128.0.62' (ED25519) to the list of known hosts. execve("./syz-executor3267143007", ["./syz-executor3267143007"], 0x7ffdc08b1b90 /* 10 vars */) = 0 brk(NULL) = 0x555556b26000 brk(0x555556b26d00) = 0x555556b26d00 arch_prctl(ARCH_SET_FS, 0x555556b26380) = 0 set_tid_address(0x555556b26650) = 5059 set_robust_list(0x555556b26660, 24) = 0 rseq(0x555556b26ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3267143007", 4096) = 28 getrandom("\xdc\x14\x23\x5b\x62\x73\x63\x9b", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555556b26d00 brk(0x555556b47d00) = 0x555556b47d00 brk(0x555556b48000) = 0x555556b48000 mprotect(0x7f87d56c7000, 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=0x555556b26650) = 5060 ./strace-static-x86_64: Process 5060 attached [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] set_robust_list(0x555556b26660, 24) = 0 ./strace-static-x86_64: Process 5061 attached [pid 5060] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5059] <... clone resumed>, child_tidptr=0x555556b26650) = 5061 [pid 5061] set_robust_list(0x555556b26660, 24) = 0 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5060] <... openat resumed>) = 3 [pid 5060] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 5061] <... openat resumed>) = 3 [pid 5060] close(3) = 0 [pid 5061] ioctl(3, LOOP_CLR_FD./strace-static-x86_64: Process 5062 attached ) = -1 ENXIO (No such device or address) [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5059] <... clone resumed>, child_tidptr=0x555556b26650) = 5062 [pid 5062] set_robust_list(0x555556b26660, 24 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5062] <... set_robust_list resumed>) = 0 [pid 5062] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5061] close(3) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5062] <... openat resumed>) = 3 [pid 5060] <... clone resumed>, child_tidptr=0x555556b26650) = 5063 ./strace-static-x86_64: Process 5063 attached ./strace-static-x86_64: Process 5064 attached [pid 5063] set_robust_list(0x555556b26660, 24) = 0 [pid 5064] set_robust_list(0x555556b26660, 24) = 0 [pid 5059] <... clone resumed>, child_tidptr=0x555556b26650) = 5064 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5065 attached [pid 5063] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5064] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5062] ioctl(3, LOOP_CLR_FD [pid 5065] set_robust_list(0x555556b26660, 24 [pid 5063] <... prctl resumed>) = 0 [pid 5064] <... openat resumed>) = 3 [pid 5065] <... set_robust_list resumed>) = 0 [pid 5063] setpgid(0, 0 [pid 5064] ioctl(3, LOOP_CLR_FD [pid 5062] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5061] <... clone resumed>, child_tidptr=0x555556b26650) = 5065 [pid 5065] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5064] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5062] close(3) = 0 [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5065] <... prctl resumed>) = 0 [pid 5063] <... setpgid resumed>) = 0 [pid 5064] close(3 [pid 5065] setpgid(0, 0 [pid 5064] <... close resumed>) = 0 [pid 5065] <... setpgid resumed>) = 0 [pid 5063] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5069 attached ./strace-static-x86_64: Process 5067 attached [pid 5065] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5063] <... openat resumed>) = 3 [pid 5059] <... clone resumed>, child_tidptr=0x555556b26650) = 5067 [pid 5069] set_robust_list(0x555556b26660, 24 [pid 5063] write(3, "1000", 4 [pid 5064] <... clone resumed>, child_tidptr=0x555556b26650) = 5069 [pid 5069] <... set_robust_list resumed>) = 0 [pid 5063] <... write resumed>) = 4 [pid 5067] set_robust_list(0x555556b26660, 24 [pid 5059] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] <... set_robust_list resumed>) = 0 [pid 5063] close(3 [pid 5062] <... clone resumed>, child_tidptr=0x555556b26650) = 5068 [pid 5069] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5063] <... close resumed>) = 0 ./strace-static-x86_64: Process 5068 attached [pid 5063] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5068] set_robust_list(0x555556b26660, 24 [pid 5065] <... openat resumed>) = 3 [pid 5068] <... set_robust_list resumed>) = 0 [pid 5068] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5067] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5068] <... prctl resumed>) = 0 [pid 5068] setpgid(0, 0) = 0 [pid 5069] <... prctl resumed>) = 0 [pid 5063] <... openat resumed>) = 3 [pid 5069] setpgid(0, 0 [pid 5065] write(3, "1000", 4./strace-static-x86_64: Process 5070 attached [pid 5068] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5067] <... openat resumed>) = 3 [pid 5069] <... setpgid resumed>) = 0 [pid 5065] <... write resumed>) = 4 [pid 5063] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5059] <... clone resumed>, child_tidptr=0x555556b26650) = 5070 [pid 5070] set_robust_list(0x555556b26660, 24 [pid 5067] ioctl(3, LOOP_CLR_FD [pid 5069] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5065] close(3 [pid 5063] <... openat resumed>) = 4 [pid 5070] <... set_robust_list resumed>) = 0 [pid 5068] <... openat resumed>) = 3 [pid 5067] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5069] <... openat resumed>) = 3 [pid 5065] <... close resumed>) = 0 [pid 5065] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5067] close(3 [pid 5065] <... openat resumed>) = 3 [pid 5068] write(3, "1000", 4 [pid 5070] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5068] <... write resumed>) = 4 [pid 5067] <... close resumed>) = 0 [pid 5069] write(3, "1000", 4 [pid 5065] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5063] sendfile(4, 3, [88] [pid 5068] close(3 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5069] <... write resumed>) = 4 [pid 5065] <... openat resumed>) = 4 [pid 5070] <... openat resumed>) = 3 [pid 5068] <... close resumed>) = 0 [pid 5069] close(3 [pid 5065] sendfile(4, 3, [88] [pid 5068] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5069] <... close resumed>) = 0 [pid 5068] <... openat resumed>) = 3 [pid 5069] openat(AT_FDCWD, "/proc/partitions", O_RDONLY./strace-static-x86_64: Process 5071 attached [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5068] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5070] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5067] <... clone resumed>, child_tidptr=0x555556b26650) = 5071 [pid 5071] set_robust_list(0x555556b26660, 24) = 0 [pid 5069] <... openat resumed>) = 3 [pid 5068] <... openat resumed>) = 4 [pid 5070] close(3 [pid 5071] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5070] <... close resumed>) = 0 [pid 5068] sendfile(4, 3, [88] [pid 5069] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5071] <... prctl resumed>) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5069] <... openat resumed>) = 4 [pid 5069] sendfile(4, 3, [88] [pid 5071] setpgid(0, 0./strace-static-x86_64: Process 5072 attached ) = 0 [pid 5070] <... clone resumed>, child_tidptr=0x555556b26650) = 5072 [pid 5072] set_robust_list(0x555556b26660, 24) = 0 [pid 5071] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5072] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5071] <... openat resumed>) = 3 [pid 5072] setpgid(0, 0 [pid 5071] write(3, "1000", 4) = 4 [pid 5071] close(3 [pid 5072] <... setpgid resumed>) = 0 [pid 5071] <... close resumed>) = 0 [pid 5072] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5071] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5072] <... openat resumed>) = 3 [pid 5071] <... openat resumed>) = 3 [pid 5072] write(3, "1000", 4 [pid 5071] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5072] <... write resumed>) = 4 [pid 5071] <... openat resumed>) = 4 [pid 5072] close(3 [pid 5071] sendfile(4, 3, [88] [pid 5072] <... close resumed>) = 0 [pid 5072] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5072] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 syzkaller login: [ 71.618148][ T5072] syz-executor326 (5072): drop_caches: 1 [ 71.626240][ T5071] syz-executor326 (5071): drop_caches: 1 [ 71.633286][ T5068] syz-executor326 (5068): drop_caches: 1 [ 71.646327][ T5065] syz-executor326 (5065): drop_caches: 1 [ 71.654647][ T5063] syz-executor326 (5063): drop_caches: 1 [ 71.662185][ T5069] syz-executor326 (5069): drop_caches: 1 [pid 5072] sendfile(4, 3, [88] [pid 5071] <... sendfile resumed> => [103], 15) = 15 [pid 5068] <... sendfile resumed> => [103], 15) = 15 [pid 5072] <... sendfile resumed> => [103], 15) = 15 [pid 5072] memfd_create("syzkaller", 0) = 5 [pid 5072] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5068] memfd_create("syzkaller", 0) = 5 [pid 5068] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 71.875321][ T5072] syz-executor326 (5072): drop_caches: 1 [ 71.884715][ T5068] syz-executor326 (5068): drop_caches: 1 [ 71.891200][ T5071] syz-executor326 (5071): drop_caches: 1 [pid 5071] memfd_create("syzkaller", 0) = 5 [pid 5071] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5072] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5069] <... sendfile resumed> => [103], 15) = 15 [pid 5065] <... sendfile resumed> => [103], 15) = 15 [pid 5068] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5065] memfd_create("syzkaller", 0) = 5 [pid 5065] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5063] <... sendfile resumed> => [103], 15) = 15 [pid 5069] memfd_create("syzkaller", 0 [pid 5063] memfd_create("syzkaller", 0) = 5 [pid 5063] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5069] <... memfd_create resumed>) = 5 [ 71.915756][ T5065] syz-executor326 (5065): drop_caches: 1 [ 71.928362][ T5063] syz-executor326 (5063): drop_caches: 1 [ 71.952475][ T5069] syz-executor326 (5069): drop_caches: 1 [pid 5069] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5072] <... write resumed>) = 2097152 [pid 5068] <... write resumed>) = 2097152 [pid 5068] munmap(0x7f87cd1f6000, 138412032 [pid 5071] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5072] munmap(0x7f87cd1f6000, 138412032 [pid 5068] <... munmap resumed>) = 0 [pid 5065] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5068] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 6 [pid 5072] <... munmap resumed>) = 0 [pid 5068] ioctl(6, LOOP_SET_FD, 5 [pid 5069] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5063] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5068] <... ioctl resumed>) = 0 [pid 5072] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 6 [pid 5065] <... write resumed>) = 2097152 [pid 5072] ioctl(6, LOOP_SET_FD, 5 [pid 5071] <... write resumed>) = 2097152 [pid 5068] close(5 [pid 5069] <... write resumed>) = 2097152 [pid 5065] munmap(0x7f87cd1f6000, 138412032 [pid 5071] munmap(0x7f87cd1f6000, 138412032) = 0 [pid 5068] <... close resumed>) = 0 [pid 5069] munmap(0x7f87cd1f6000, 138412032 [pid 5071] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5072] <... ioctl resumed>) = 0 [pid 5068] mkdir("./file0", 0777 [pid 5069] <... munmap resumed>) = 0 [pid 5065] <... munmap resumed>) = 0 [pid 5063] <... write resumed>) = 2097152 [pid 5072] close(5 [pid 5071] <... openat resumed>) = 6 [pid 5063] munmap(0x7f87cd1f6000, 138412032 [pid 5072] <... close resumed>) = 0 [pid 5071] ioctl(6, LOOP_SET_FD, 5 [pid 5069] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5065] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5072] mkdir("./file0", 0777 [pid 5069] <... openat resumed>) = 6 [pid 5065] <... openat resumed>) = 6 [ 72.070815][ T5068] loop2: detected capacity change from 0 to 4096 [ 72.101160][ T5072] loop5: detected capacity change from 0 to 4096 [pid 5069] ioctl(6, LOOP_SET_FD, 5 [pid 5065] ioctl(6, LOOP_SET_FD, 5 [pid 5063] <... munmap resumed>) = 0 [pid 5071] <... ioctl resumed>) = 0 [pid 5063] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5071] close(5 [pid 5063] <... openat resumed>) = 6 [pid 5071] <... close resumed>) = 0 [pid 5063] ioctl(6, LOOP_SET_FD, 5 [pid 5071] mkdir("./file0", 0777 [pid 5063] <... ioctl resumed>) = 0 [pid 5063] close(5) = 0 [pid 5063] mkdir("./file0", 0777 [pid 5069] <... ioctl resumed>) = 0 [pid 5072] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5071] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5068] <... mkdir resumed>) = 0 [pid 5065] <... ioctl resumed>) = 0 [pid 5063] <... mkdir resumed>) = -1 EEXIST (File exists) [pid 5072] mount("/dev/loop5", "./file0", "ntfs", 0, "" [pid 5071] mount("/dev/loop4", "./file0", "ntfs", 0, "" [pid 5068] mount("/dev/loop2", "./file0", "ntfs", 0, "" [pid 5069] close(5 [pid 5065] close(5 [pid 5063] mount("/dev/loop0", "./file0", "ntfs", 0, "" [pid 5065] <... close resumed>) = 0 [pid 5065] mkdir("./file0", 0777) = -1 EEXIST (File exists) [pid 5065] mount("/dev/loop1", "./file0", "ntfs", 0, "" [pid 5069] <... close resumed>) = 0 [pid 5069] mkdir("./file0", 0777) = -1 EEXIST (File exists) [ 72.130299][ T5071] loop4: detected capacity change from 0 to 4096 [ 72.133763][ T5069] loop3: detected capacity change from 0 to 4096 [ 72.139287][ T5063] loop0: detected capacity change from 0 to 4096 [ 72.143658][ T5065] loop1: detected capacity change from 0 to 4096 [pid 5069] mount("/dev/loop3", "./file0", "ntfs", 0, "" [pid 5065] <... mount resumed>) = 0 [pid 5065] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 5 [pid 5065] chdir("./file0") = 0 [pid 5065] ioctl(6, LOOP_CLR_FD) = 0 [pid 5065] close(6) = 0 [ 72.252512][ T5065] ntfs: volume version 3.1. [ 72.267918][ T5071] ntfs: volume version 3.1. [ 72.273845][ T5063] ntfs: volume version 3.1. [ 72.275714][ T5068] ntfs: volume version 3.1. [ 72.284408][ T5072] ntfs: volume version 3.1. [pid 5065] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5068] <... mount resumed>) = 0 [pid 5065] <... open resumed>) = 6 [pid 5065] pwritev(6, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5068] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5071] <... mount resumed>) = 0 [pid 5068] <... openat resumed>) = 5 [pid 5068] chdir("./file0" [pid 5071] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5068] <... chdir resumed>) = 0 [pid 5068] ioctl(6, LOOP_CLR_FD [pid 5071] <... openat resumed>) = 5 [pid 5071] chdir("./file0" [pid 5068] <... ioctl resumed>) = 0 [pid 5071] <... chdir resumed>) = 0 [pid 5068] close(6 [pid 5071] ioctl(6, LOOP_CLR_FD [pid 5068] <... close resumed>) = 0 [pid 5071] <... ioctl resumed>) = 0 [pid 5068] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5071] close(6) = 0 [pid 5071] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5068] <... open resumed>) = 6 [pid 5072] <... mount resumed>) = 0 [pid 5071] <... open resumed>) = 6 [pid 5071] pwritev(6, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5063] <... mount resumed>) = 0 [pid 5068] pwritev(6, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5063] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 5 [pid 5063] chdir("./file0" [pid 5072] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5069] <... mount resumed>) = 0 [pid 5072] <... openat resumed>) = 5 [pid 5069] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5063] <... chdir resumed>) = 0 [pid 5072] chdir("./file0" [pid 5063] ioctl(6, LOOP_CLR_FD) = 0 [pid 5063] close(6) = 0 [pid 5063] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5072] <... chdir resumed>) = 0 [pid 5072] ioctl(6, LOOP_CLR_FD [pid 5069] <... openat resumed>) = 5 [pid 5072] <... ioctl resumed>) = 0 [ 72.312518][ T5069] ntfs: volume version 3.1. [pid 5069] chdir("./file0" [pid 5072] close(6 [pid 5069] <... chdir resumed>) = 0 [pid 5065] <... pwritev resumed>) = 103 [pid 5072] <... close resumed>) = 0 [pid 5069] ioctl(6, LOOP_CLR_FD [pid 5072] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 6 [pid 5069] <... ioctl resumed>) = 0 [pid 5065] exit_group(0 [pid 5063] <... open resumed>) = 6 [pid 5072] pwritev(6, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5069] close(6) = 0 [pid 5065] <... exit_group resumed>) = ? [pid 5063] pwritev(6, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5069] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 6 [pid 5065] +++ exited with 0 +++ [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5065, si_uid=0, si_status=0, si_utime=0, si_stime=26 /* 0.26 s */} --- [pid 5069] pwritev(6, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5061] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5063] <... pwritev resumed>) = 103 [pid 5061] <... openat resumed>) = 3 [pid 5072] <... pwritev resumed>) = 103 [pid 5068] <... pwritev resumed>) = 103 [pid 5069] <... pwritev resumed>) = 103 [pid 5072] exit_group(0 [pid 5068] exit_group(0 [pid 5063] exit_group(0 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5072] <... exit_group resumed>) = ? [pid 5069] exit_group(0 [pid 5063] <... exit_group resumed>) = ? [pid 5061] <... ioctl resumed>) = 0 [pid 5071] <... pwritev resumed>) = 103 [pid 5068] <... exit_group resumed>) = ? [pid 5061] close(3 [pid 5072] +++ exited with 0 +++ [pid 5071] exit_group(0 [pid 5068] +++ exited with 0 +++ [pid 5069] <... exit_group resumed>) = ? [pid 5061] <... close resumed>) = 0 [pid 5071] <... exit_group resumed>) = ? [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5072, si_uid=0, si_status=0, si_utime=0, si_stime=30 /* 0.30 s */} --- [pid 5062] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5068, si_uid=0, si_status=0, si_utime=0, si_stime=30 /* 0.30 s */} --- [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5074 attached [pid 5071] +++ exited with 0 +++ [pid 5069] +++ exited with 0 +++ [pid 5062] restart_syscall(<... resuming interrupted clone ...> [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5071, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=23 /* 0.23 s */} --- [pid 5063] +++ exited with 0 +++ [pid 5062] <... restart_syscall resumed>) = 0 [pid 5074] set_robust_list(0x555556b26660, 24 [pid 5070] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5074] <... set_robust_list resumed>) = 0 [pid 5064] --- 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=31 /* 0.31 s */} --- [pid 5061] <... clone resumed>, child_tidptr=0x555556b26650) = 5074 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5063, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=29 /* 0.29 s */} --- [pid 5074] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5070] <... openat resumed>) = 3 [pid 5064] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5074] <... prctl resumed>) = 0 [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5074] setpgid(0, 0 [pid 5067] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5064] <... openat resumed>) = 3 [pid 5074] <... setpgid resumed>) = 0 [pid 5074] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5070] <... ioctl resumed>) = 0 [pid 5067] <... openat resumed>) = 3 [pid 5064] ioctl(3, LOOP_CLR_FD [pid 5062] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5070] close(3 [pid 5067] ioctl(3, LOOP_CLR_FD [pid 5064] <... ioctl resumed>) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5074] <... openat resumed>) = 3 [pid 5067] <... ioctl resumed>) = 0 [pid 5064] close(3 [pid 5062] <... openat resumed>) = 3 [pid 5060] <... openat resumed>) = 3 [pid 5064] <... close resumed>) = 0 [pid 5062] ioctl(3, LOOP_CLR_FD [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5070] <... close resumed>) = 0 [pid 5067] close(3 [pid 5074] write(3, "1000", 4) = 4 [pid 5074] close(3) = 0 [pid 5074] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5074] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5067] <... close resumed>) = 0 [pid 5060] <... ioctl resumed>) = 0 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5062] <... ioctl resumed>) = 0 [pid 5060] close(3 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5074] <... openat resumed>) = 4 [pid 5074] sendfile(4, 3, [88] [pid 5060] <... close resumed>) = 0 [pid 5062] close(3 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] <... clone resumed>, child_tidptr=0x555556b26650) = 5077 ./strace-static-x86_64: Process 5076 attached ./strace-static-x86_64: Process 5077 attached ./strace-static-x86_64: Process 5075 attached [pid 5070] <... clone resumed>, child_tidptr=0x555556b26650) = 5076 [pid 5064] <... clone resumed>, child_tidptr=0x555556b26650) = 5075 [pid 5062] <... close resumed>) = 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556b26650) = 5078 [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5078 attached [pid 5076] set_robust_list(0x555556b26660, 24 [pid 5077] set_robust_list(0x555556b26660, 24 [pid 5075] set_robust_list(0x555556b26660, 24 [pid 5078] set_robust_list(0x555556b26660, 24 [pid 5076] <... set_robust_list resumed>) = 0 [pid 5077] <... set_robust_list resumed>) = 0 [pid 5075] <... set_robust_list resumed>) = 0 [pid 5076] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5062] <... clone resumed>, child_tidptr=0x555556b26650) = 5079 ./strace-static-x86_64: Process 5079 attached [pid 5078] <... set_robust_list resumed>) = 0 [pid 5076] <... prctl resumed>) = 0 [pid 5077] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5075] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5078] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5075] <... prctl resumed>) = 0 [pid 5076] setpgid(0, 0 [pid 5079] set_robust_list(0x555556b26660, 24 [pid 5078] <... prctl resumed>) = 0 [pid 5076] <... setpgid resumed>) = 0 [pid 5077] <... prctl resumed>) = 0 [pid 5075] setpgid(0, 0 [pid 5079] <... set_robust_list resumed>) = 0 [pid 5078] setpgid(0, 0 [pid 5076] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5077] setpgid(0, 0 [pid 5075] <... setpgid resumed>) = 0 [pid 5079] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5078] <... setpgid resumed>) = 0 [pid 5076] <... openat resumed>) = 3 [pid 5077] <... setpgid resumed>) = 0 [pid 5075] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5079] <... prctl resumed>) = 0 [pid 5078] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5077] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5079] setpgid(0, 0 [pid 5076] write(3, "1000", 4 [pid 5075] <... openat resumed>) = 3 [pid 5079] <... setpgid resumed>) = 0 [pid 5076] <... write resumed>) = 4 [pid 5077] <... openat resumed>) = 3 [pid 5075] write(3, "1000", 4 [pid 5079] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5078] <... openat resumed>) = 3 [pid 5076] close(3 [pid 5077] write(3, "1000", 4 [pid 5075] <... write resumed>) = 4 [pid 5079] <... openat resumed>) = 3 [pid 5078] write(3, "1000", 4 [pid 5076] <... close resumed>) = 0 [pid 5077] <... write resumed>) = 4 [pid 5075] close(3 [pid 5079] write(3, "1000", 4 [pid 5078] <... write resumed>) = 4 [pid 5079] <... write resumed>) = 4 [pid 5078] close(3 [pid 5076] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5077] close(3 [pid 5075] <... close resumed>) = 0 [pid 5079] close(3 [pid 5078] <... close resumed>) = 0 [pid 5076] <... openat resumed>) = 3 [pid 5077] <... close resumed>) = 0 [pid 5075] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5079] <... close resumed>) = 0 [pid 5078] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5076] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5077] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5075] <... openat resumed>) = 3 [pid 5079] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5078] <... openat resumed>) = 3 [pid 5076] <... openat resumed>) = 4 [pid 5077] <... openat resumed>) = 3 [pid 5075] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5079] <... openat resumed>) = 3 [pid 5078] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5076] sendfile(4, 3, [88] [pid 5077] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5075] <... openat resumed>) = 4 [pid 5079] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5078] <... openat resumed>) = 4 [pid 5079] <... openat resumed>) = 4 [pid 5078] sendfile(4, 3, [88] [pid 5077] <... openat resumed>) = 4 [pid 5075] sendfile(4, 3, [88] [pid 5079] sendfile(4, 3, [88] [ 72.790052][ T5074] syz-executor326 (5074): drop_caches: 1 [ 72.894157][ T5079] syz-executor326 (5079): drop_caches: 1 [ 73.014336][ T5076] syz-executor326 (5076): drop_caches: 1 [ 73.024907][ T5075] syz-executor326 (5075): drop_caches: 1 [ 73.035431][ T5078] syz-executor326 (5078): drop_caches: 1 [ 73.044445][ T5077] syz-executor326 (5077): drop_caches: 1 [pid 5077] sendfile(4, 3, [88] [pid 5074] <... sendfile resumed> => [103], 15) = 15 [pid 5074] memfd_create("syzkaller", 0) = 5 [ 73.126842][ T5074] syz-executor326 (5074): drop_caches: 1 [pid 5074] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5079] <... sendfile resumed> => [103], 15) = 15 [pid 5079] memfd_create("syzkaller", 0) = 5 [ 73.171969][ T5079] syz-executor326 (5079): drop_caches: 1 [pid 5079] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5074] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5079] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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(0x7f87cd1f6000, 138412032) = 0 [pid 5074] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5079] <... write resumed>) = 2097152 [pid 5077] <... sendfile resumed> => [103], 15) = 15 [pid 5074] <... openat resumed>) = 6 [pid 5079] munmap(0x7f87cd1f6000, 138412032 [pid 5074] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5074] ioctl(6, LOOP_CLR_FD) = 0 [pid 5079] <... munmap resumed>) = 0 [pid 5077] memfd_create("syzkaller", 0 [pid 5079] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5078] <... sendfile resumed> => [103], 15) = 15 [pid 5077] <... memfd_create resumed>) = 5 [pid 5076] <... sendfile resumed> => [103], 15) = 15 [pid 5079] <... openat resumed>) = 6 [pid 5078] memfd_create("syzkaller", 0 [pid 5077] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5075] <... sendfile resumed> => [103], 15) = 15 [pid 5079] ioctl(6, LOOP_SET_FD, 5 [pid 5078] <... memfd_create resumed>) = 5 [pid 5076] memfd_create("syzkaller", 0 [pid 5077] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5074] ioctl(6, LOOP_SET_FD, 5 [pid 5079] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5078] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5075] memfd_create("syzkaller", 0 [pid 5074] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5078] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5079] ioctl(6, LOOP_CLR_FD [pid 5074] close(6 [pid 5075] <... memfd_create resumed>) = 5 [pid 5075] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 73.347802][ T5077] syz-executor326 (5077): drop_caches: 1 [ 73.376761][ T5078] syz-executor326 (5078): drop_caches: 1 [ 73.382783][ T5076] syz-executor326 (5076): drop_caches: 1 [ 73.384358][ T5075] syz-executor326 (5075): drop_caches: 1 [pid 5079] <... ioctl resumed>) = 0 [pid 5076] <... memfd_create resumed>) = 5 [pid 5074] <... close resumed>) = 0 [pid 5076] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5074] close(5 [pid 5079] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5079] close(6 [pid 5075] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5079] <... close resumed>) = 0 [pid 5079] close(5) = 0 [pid 5074] <... close resumed>) = 0 [pid 5079] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5077] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5079] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5078] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 resumed>) = 2097152 [pid 5074] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5075] munmap(0x7f87cd1f6000, 138412032) = 0 [pid 5074] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5075] openat(AT_FDCWD, "/dev/loop3", 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 5078] <... write resumed>) = 2097152 [pid 5076] <... write resumed>) = 2097152 [pid 5076] munmap(0x7f87cd1f6000, 138412032 [pid 5078] munmap(0x7f87cd1f6000, 138412032 [pid 5076] <... munmap resumed>) = 0 [pid 5077] <... write resumed>) = 2097152 [pid 5075] <... close resumed>) = 0 [pid 5076] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 6 [pid 5077] munmap(0x7f87cd1f6000, 138412032 [pid 5075] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5079] <... pwritev resumed>) = 103 [pid 5074] <... pwritev resumed>) = 103 [pid 5079] exit_group(0 [pid 5078] <... munmap resumed>) = 0 [pid 5076] ioctl(6, LOOP_SET_FD, 5 [pid 5075] <... open resumed>) = 5 [pid 5074] exit_group(0 [pid 5079] <... exit_group resumed>) = ? [pid 5075] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5074] <... exit_group resumed>) = ? [pid 5076] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5077] <... munmap resumed>) = 0 [pid 5079] +++ exited with 0 +++ [pid 5078] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5076] ioctl(6, LOOP_CLR_FD [pid 5075] <... pwritev resumed>) = 103 [pid 5074] +++ exited with 0 +++ [pid 5078] <... openat resumed>) = 6 [pid 5076] <... ioctl resumed>) = 0 [pid 5077] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5075] exit_group(0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5074, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=27 /* 0.27 s */} --- [pid 5078] ioctl(6, LOOP_SET_FD, 5 [pid 5077] <... openat resumed>) = 6 [pid 5075] <... exit_group resumed>) = ? [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=35 /* 0.35 s */} --- [pid 5078] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5077] ioctl(6, LOOP_SET_FD, 5 [pid 5062] restart_syscall(<... resuming interrupted clone ...> [pid 5078] ioctl(6, LOOP_CLR_FD [pid 5077] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5077] ioctl(6, LOOP_CLR_FD [pid 5062] <... restart_syscall resumed>) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5078] <... ioctl resumed>) = 0 [pid 5076] ioctl(6, LOOP_SET_FD, 5 [pid 5077] <... ioctl resumed>) = 0 [pid 5076] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... openat resumed>) = 3 [pid 5076] close(6 [pid 5075] +++ exited with 0 +++ [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5077] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5077] close(6) = 0 [pid 5077] close(5 [pid 5076] <... close resumed>) = 0 [pid 5077] <... close resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5075, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=28 /* 0.28 s */} --- [pid 5062] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5061] <... ioctl resumed>) = 0 [pid 5078] ioctl(6, LOOP_SET_FD, 5 [pid 5076] close(5 [pid 5064] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] close(3 [pid 5078] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5062] <... openat resumed>) = 3 [pid 5077] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5064] <... openat resumed>) = 3 [pid 5078] close(6 [pid 5062] ioctl(3, LOOP_CLR_FD [pid 5061] <... close resumed>) = 0 [pid 5078] <... close resumed>) = 0 [pid 5077] <... open resumed>) = 5 [pid 5064] ioctl(3, LOOP_CLR_FD [pid 5062] <... ioctl resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5078] close(5 [pid 5064] <... ioctl resumed>) = 0 [pid 5077] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5064] close(3 [pid 5062] close(3 [pid 5064] <... close resumed>) = 0 [pid 5062] <... close resumed>) = 0 [pid 5061] <... clone resumed>, child_tidptr=0x555556b26650) = 5083 ./strace-static-x86_64: Process 5083 attached [pid 5078] <... close resumed>) = 0 [pid 5076] <... close resumed>) = 0 [pid 5077] <... pwritev resumed>) = 103 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5077] exit_group(0 [pid 5083] set_robust_list(0x555556b26660, 24) = 0 [pid 5077] <... exit_group resumed>) = ? [pid 5083] prctl(PR_SET_PDEATHSIG, SIGKILL./strace-static-x86_64: Process 5084 attached [pid 5077] +++ exited with 0 +++ [pid 5084] set_robust_list(0x555556b26660, 24 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5077, si_uid=0, si_status=0, si_utime=0, si_stime=25 /* 0.25 s */} --- [pid 5084] <... set_robust_list resumed>) = 0 [pid 5083] <... prctl resumed>) = 0 [pid 5083] setpgid(0, 0 [pid 5084] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5083] <... setpgid resumed>) = 0 [pid 5083] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5084] <... prctl resumed>) = 0 [pid 5076] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5083] <... openat resumed>) = 3 [pid 5083] write(3, "1000", 4) = 4 [pid 5083] close(3) = 0 [pid 5076] <... open resumed>) = 5 [pid 5084] setpgid(0, 0 [pid 5083] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5076] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5067] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5064] <... clone resumed>, child_tidptr=0x555556b26650) = 5084 ./strace-static-x86_64: Process 5085 attached [pid 5084] <... setpgid resumed>) = 0 [pid 5083] <... openat resumed>) = 3 [pid 5067] <... openat resumed>) = 3 [pid 5062] <... clone resumed>, child_tidptr=0x555556b26650) = 5085 [pid 5085] set_robust_list(0x555556b26660, 24 [pid 5078] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5067] ioctl(3, LOOP_CLR_FD) = 0 [pid 5067] close(3 [pid 5085] <... set_robust_list resumed>) = 0 [pid 5084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5083] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5078] <... open resumed>) = 5 [pid 5067] <... close resumed>) = 0 [pid 5085] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5084] <... openat resumed>) = 3 [pid 5083] <... openat resumed>) = 4 [pid 5078] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5076] <... pwritev resumed>) = 103 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5085] <... prctl resumed>) = 0 [pid 5084] write(3, "1000", 4 [pid 5083] sendfile(4, 3, [88]./strace-static-x86_64: Process 5086 attached [pid 5085] setpgid(0, 0 [pid 5076] exit_group(0 [pid 5084] <... write resumed>) = 4 [pid 5078] <... pwritev resumed>) = 103 [pid 5084] close(3 [pid 5067] <... clone resumed>, child_tidptr=0x555556b26650) = 5086 [pid 5078] exit_group(0 [pid 5084] <... close resumed>) = 0 [pid 5078] <... exit_group resumed>) = ? [pid 5086] set_robust_list(0x555556b26660, 24 [pid 5085] <... setpgid resumed>) = 0 [pid 5084] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5078] +++ exited with 0 +++ [pid 5076] <... exit_group resumed>) = ? [pid 5086] <... set_robust_list resumed>) = 0 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5078, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=26 /* 0.26 s */} --- [pid 5086] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5084] <... openat resumed>) = 3 [pid 5076] +++ exited with 0 +++ [pid 5085] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5084] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5086] <... prctl resumed>) = 0 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5076, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=26 /* 0.26 s */} --- [pid 5060] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5086] setpgid(0, 0 [pid 5085] <... openat resumed>) = 3 [pid 5084] <... openat resumed>) = 4 [pid 5070] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... openat resumed>) = 3 [pid 5086] <... setpgid resumed>) = 0 [pid 5084] sendfile(4, 3, [88] [pid 5060] ioctl(3, LOOP_CLR_FD) = 0 [pid 5060] close(3 [pid 5085] write(3, "1000", 4) = 4 [pid 5085] close(3 [pid 5086] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5060] <... close resumed>) = 0 [pid 5085] <... close resumed>) = 0 [pid 5085] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5070] <... openat resumed>) = 3 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5085] <... openat resumed>) = 3 [pid 5085] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5085] sendfile(4, 3, [88] [pid 5086] <... openat resumed>) = 3 [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5086] write(3, "1000", 4 [pid 5070] <... ioctl resumed>) = 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556b26650) = 5087 [pid 5070] close(3 [pid 5086] <... write resumed>) = 4 [pid 5070] <... close resumed>) = 0 [pid 5086] close(3 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5086] <... close resumed>) = 0 ./strace-static-x86_64: Process 5087 attached [pid 5087] set_robust_list(0x555556b26660, 24) = 0 [pid 5087] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5086] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5087] <... prctl resumed>) = 0 [pid 5087] setpgid(0, 0 [pid 5086] <... openat resumed>) = 3 [pid 5070] <... clone resumed>, child_tidptr=0x555556b26650) = 5088 [pid 5087] <... setpgid resumed>) = 0 [pid 5087] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC./strace-static-x86_64: Process 5088 attached ) = 3 [pid 5086] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5087] write(3, "1000", 4 [pid 5088] set_robust_list(0x555556b26660, 24 [pid 5086] sendfile(4, 3, [88] [pid 5088] <... set_robust_list resumed>) = 0 [pid 5087] <... write resumed>) = 4 [pid 5088] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5087] close(3 [pid 5088] <... prctl resumed>) = 0 [pid 5087] <... close resumed>) = 0 [pid 5088] setpgid(0, 0 [pid 5087] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5088] <... setpgid resumed>) = 0 [pid 5087] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5088] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5087] <... openat resumed>) = 4 [pid 5087] sendfile(4, 3, [88] [pid 5088] <... openat resumed>) = 3 [pid 5088] write(3, "1000", 4) = 4 [pid 5088] close(3) = 0 [pid 5088] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5088] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 74.154000][ T5083] syz-executor326 (5083): drop_caches: 1 [ 74.165336][ T5087] syz-executor326 (5087): drop_caches: 1 [ 74.176469][ T5085] syz-executor326 (5085): drop_caches: 1 [ 74.182479][ T5084] syz-executor326 (5084): drop_caches: 1 [ 74.223487][ T5086] syz-executor326 (5086): drop_caches: 1 [ 74.281744][ T5088] syz-executor326 (5088): drop_caches: 1 [pid 5088] sendfile(4, 3, [88] [pid 5083] <... sendfile resumed> => [103], 15) = 15 [ 74.445421][ T5083] syz-executor326 (5083): drop_caches: 1 [ 74.463849][ T5087] syz-executor326 (5087): drop_caches: 1 [pid 5087] <... sendfile resumed> => [103], 15) = 15 [pid 5083] memfd_create("syzkaller", 0 [pid 5087] memfd_create("syzkaller", 0 [pid 5085] <... sendfile resumed> => [103], 15) = 15 [pid 5083] <... memfd_create resumed>) = 5 [pid 5083] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5087] <... memfd_create resumed>) = 5 [pid 5087] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5083] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5087] <... mmap resumed>) = 0x7f87cd1f6000 [ 74.487108][ T5085] syz-executor326 (5085): drop_caches: 1 [ 74.516380][ T5084] syz-executor326 (5084): drop_caches: 1 [pid 5085] memfd_create("syzkaller", 0) = 5 [pid 5085] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5084] <... sendfile resumed> => [103], 15) = 15 [pid 5084] memfd_create("syzkaller", 0) = 5 [pid 5084] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5086] <... sendfile resumed> => [103], 15) = 15 [pid 5083] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5086] memfd_create("syzkaller", 0) = 5 [pid 5086] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 74.537943][ T5086] syz-executor326 (5086): drop_caches: 1 [ 74.576936][ T5088] syz-executor326 (5088): drop_caches: 1 [pid 5087] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 resumed> => [103], 15) = 15 [pid 5088] memfd_create("syzkaller", 0) = 5 [pid 5088] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5085] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5083] <... write resumed>) = 2097152 [pid 5084] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5083] munmap(0x7f87cd1f6000, 138412032) = 0 [pid 5086] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5087] <... write resumed>) = 2097152 [pid 5085] <... write resumed>) = 2097152 [pid 5083] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5088] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5087] munmap(0x7f87cd1f6000, 138412032 [pid 5085] munmap(0x7f87cd1f6000, 138412032 [pid 5083] <... openat resumed>) = 6 [pid 5083] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5083] ioctl(6, LOOP_CLR_FD) = 0 [pid 5085] <... munmap resumed>) = 0 [pid 5083] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5087] <... munmap resumed>) = 0 [pid 5085] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5083] close(6) = 0 [pid 5083] close(5 [pid 5085] <... openat resumed>) = 6 [pid 5085] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5085] ioctl(6, LOOP_CLR_FD) = 0 [pid 5085] ioctl(6, LOOP_SET_FD, 5 [pid 5087] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5085] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5087] <... openat resumed>) = 6 [pid 5086] <... write resumed>) = 2097152 [pid 5085] close(6 [pid 5084] <... write resumed>) = 2097152 [pid 5086] munmap(0x7f87cd1f6000, 138412032 [pid 5087] ioctl(6, LOOP_SET_FD, 5 [pid 5085] <... close resumed>) = 0 [pid 5084] munmap(0x7f87cd1f6000, 138412032 [pid 5087] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5086] <... munmap resumed>) = 0 [pid 5085] close(5 [pid 5084] <... munmap resumed>) = 0 [pid 5087] ioctl(6, LOOP_CLR_FD) = 0 [pid 5086] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5087] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5087] close(6) = 0 [pid 5088] <... write resumed>) = 2097152 [pid 5088] munmap(0x7f87cd1f6000, 138412032 [pid 5086] <... openat resumed>) = 6 [pid 5087] close(5 [pid 5088] <... munmap resumed>) = 0 [pid 5086] ioctl(6, LOOP_SET_FD, 5 [pid 5083] <... close resumed>) = 0 [pid 5086] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5086] ioctl(6, LOOP_CLR_FD) = 0 [pid 5084] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5088] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5083] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5084] <... openat resumed>) = 6 [pid 5084] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5088] <... openat resumed>) = 6 [pid 5084] ioctl(6, LOOP_CLR_FD) = 0 [pid 5083] <... open resumed>) = 5 [pid 5086] ioctl(6, LOOP_SET_FD, 5 [pid 5084] ioctl(6, LOOP_SET_FD, 5 [pid 5086] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5084] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5083] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5088] ioctl(6, LOOP_SET_FD, 5 [pid 5086] close(6 [pid 5084] close(6 [pid 5088] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5087] <... close resumed>) = 0 [pid 5086] <... close resumed>) = 0 [pid 5085] <... close resumed>) = 0 [pid 5088] ioctl(6, LOOP_CLR_FD [pid 5087] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5086] close(5 [pid 5085] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5084] <... close resumed>) = 0 [pid 5088] <... ioctl resumed>) = 0 [pid 5087] <... open resumed>) = 5 [pid 5085] <... open resumed>) = 5 [pid 5084] close(5 [pid 5087] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5085] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5083] <... pwritev resumed>) = 103 [pid 5088] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5083] exit_group(0 [pid 5087] <... pwritev resumed>) = 103 [pid 5088] close(6 [pid 5083] <... exit_group resumed>) = ? [pid 5087] exit_group(0 [pid 5088] <... close resumed>) = 0 [pid 5087] <... exit_group resumed>) = ? [pid 5083] +++ exited with 0 +++ [pid 5085] <... pwritev resumed>) = 103 [pid 5088] close(5 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5083, si_uid=0, si_status=0, si_utime=0, si_stime=29 /* 0.29 s */} --- [pid 5061] openat(AT_FDCWD, "/dev/loop1", 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, child_tidptr=0x555556b26650) = 5089 ./strace-static-x86_64: Process 5089 attached [pid 5087] +++ exited with 0 +++ [pid 5086] <... close resumed>) = 0 [pid 5085] exit_group(0 [pid 5084] <... close resumed>) = 0 [pid 5089] set_robust_list(0x555556b26660, 24) = 0 [pid 5089] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5085] <... exit_group resumed>) = ? [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5087, si_uid=0, si_status=0, si_utime=0, si_stime=27 /* 0.27 s */} --- [pid 5089] <... prctl resumed>) = 0 [pid 5085] +++ exited with 0 +++ [pid 5089] setpgid(0, 0 [pid 5060] restart_syscall(<... resuming interrupted clone ...> [pid 5089] <... setpgid resumed>) = 0 [pid 5062] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5085, si_uid=0, si_status=0, si_utime=0, si_stime=27 /* 0.27 s */} --- [pid 5060] <... restart_syscall resumed>) = 0 [pid 5089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5062] restart_syscall(<... resuming interrupted clone ...> [pid 5089] <... openat resumed>) = 3 [pid 5062] <... restart_syscall resumed>) = 0 [pid 5089] write(3, "1000", 4) = 4 [pid 5089] close(3 [pid 5062] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5060] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5089] <... close resumed>) = 0 [pid 5062] <... openat resumed>) = 3 [pid 5060] <... openat resumed>) = 3 [pid 5089] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5084] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5089] <... openat resumed>) = 3 [pid 5084] <... open resumed>) = 5 [pid 5062] ioctl(3, LOOP_CLR_FD [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5089] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5084] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5089] <... openat resumed>) = 4 [pid 5062] <... ioctl resumed>) = 0 [pid 5060] <... ioctl resumed>) = 0 [pid 5089] sendfile(4, 3, [88] [pid 5086] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5062] close(3 [pid 5060] close(3 [pid 5086] <... open resumed>) = 5 [pid 5062] <... close resumed>) = 0 [pid 5086] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5060] <... close resumed>) = 0 [pid 5062] 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 5090 attached [pid 5088] <... close resumed>) = 0 [pid 5084] <... pwritev resumed>) = 103 [pid 5060] <... clone resumed>, child_tidptr=0x555556b26650) = 5090 [pid 5090] set_robust_list(0x555556b26660, 24 [pid 5084] exit_group(0 [pid 5090] <... set_robust_list resumed>) = 0 [pid 5084] <... exit_group resumed>) = ? [pid 5090] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5084] +++ exited with 0 +++ [pid 5090] <... prctl resumed>) = 0 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5084, si_uid=0, si_status=0, si_utime=0, si_stime=28 /* 0.28 s */} --- [pid 5090] setpgid(0, 0 [pid 5088] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5086] <... pwritev resumed>) = 103 [pid 5064] restart_syscall(<... resuming interrupted clone ...> [pid 5086] exit_group(0 [pid 5064] <... restart_syscall resumed>) = 0 [pid 5086] <... exit_group resumed>) = ? ./strace-static-x86_64: Process 5091 attached [pid 5090] <... setpgid resumed>) = 0 [pid 5088] <... open resumed>) = 5 [pid 5086] +++ exited with 0 +++ [pid 5062] <... clone resumed>, child_tidptr=0x555556b26650) = 5091 [pid 5091] set_robust_list(0x555556b26660, 24 [pid 5090] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5088] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5086, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=25 /* 0.25 s */} --- [pid 5091] <... set_robust_list resumed>) = 0 [pid 5064] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5091] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5090] <... openat resumed>) = 3 [pid 5064] <... openat resumed>) = 3 [pid 5091] <... prctl resumed>) = 0 [pid 5090] write(3, "1000", 4 [pid 5067] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5064] ioctl(3, LOOP_CLR_FD [pid 5090] <... write resumed>) = 4 [pid 5067] <... openat resumed>) = 3 [pid 5064] <... ioctl resumed>) = 0 [pid 5091] setpgid(0, 0 [pid 5090] close(3 [pid 5067] ioctl(3, LOOP_CLR_FD [pid 5064] close(3 [pid 5091] <... setpgid resumed>) = 0 [pid 5090] <... close resumed>) = 0 [pid 5088] <... pwritev resumed>) = 103 [pid 5067] <... ioctl resumed>) = 0 [pid 5064] <... close resumed>) = 0 [pid 5091] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5090] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5088] exit_group(0 [pid 5067] close(3 [pid 5091] <... openat resumed>) = 3 [pid 5090] <... openat resumed>) = 3 [pid 5088] <... exit_group resumed>) = ? [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5091] write(3, "1000", 4 [pid 5090] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5088] +++ exited with 0 +++ [pid 5067] <... close resumed>) = 0 ./strace-static-x86_64: Process 5092 attached [pid 5091] <... write resumed>) = 4 [pid 5090] <... openat resumed>) = 4 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5088, si_uid=0, si_status=0, si_utime=0, si_stime=29 /* 0.29 s */} --- [pid 5092] set_robust_list(0x555556b26660, 24 [pid 5064] <... clone resumed>, child_tidptr=0x555556b26650) = 5092 [pid 5092] <... set_robust_list resumed>) = 0 [pid 5092] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5091] close(3 [pid 5090] sendfile(4, 3, [88] [pid 5092] <... prctl resumed>) = 0 [pid 5091] <... close resumed>) = 0 [pid 5092] setpgid(0, 0 [pid 5091] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5070] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5092] <... setpgid resumed>) = 0 [pid 5091] <... openat resumed>) = 3 [pid 5070] <... openat resumed>) = 3 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5093 attached [pid 5091] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5091] <... openat resumed>) = 4 [pid 5070] <... ioctl resumed>) = 0 [pid 5070] close(3 [pid 5092] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5091] sendfile(4, 3, [88] [pid 5070] <... close resumed>) = 0 [pid 5093] set_robust_list(0x555556b26660, 24 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5093] <... set_robust_list resumed>) = 0 [pid 5092] <... openat resumed>) = 3 [pid 5067] <... clone resumed>, child_tidptr=0x555556b26650) = 5093 [pid 5093] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5092] write(3, "1000", 4 [pid 5093] setpgid(0, 0 [pid 5092] <... write resumed>) = 4 [pid 5092] close(3./strace-static-x86_64: Process 5094 attached ) = 0 [pid 5094] set_robust_list(0x555556b26660, 24 [pid 5093] <... setpgid resumed>) = 0 [pid 5092] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5094] <... set_robust_list resumed>) = 0 [pid 5092] <... openat resumed>) = 3 [pid 5094] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5092] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5094] <... prctl resumed>) = 0 [pid 5092] <... openat resumed>) = 4 [pid 5093] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5094] setpgid(0, 0 [pid 5092] sendfile(4, 3, [88] [pid 5094] <... setpgid resumed>) = 0 [pid 5093] <... openat resumed>) = 3 [pid 5094] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5093] write(3, "1000", 4 [pid 5094] <... openat resumed>) = 3 [pid 5093] <... write resumed>) = 4 [pid 5070] <... clone resumed>, child_tidptr=0x555556b26650) = 5094 [pid 5094] write(3, "1000", 4 [pid 5093] close(3 [pid 5094] <... write resumed>) = 4 [pid 5093] <... close resumed>) = 0 [pid 5094] close(3 [pid 5093] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5094] <... close resumed>) = 0 [pid 5093] <... openat resumed>) = 3 [pid 5094] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5093] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5094] <... openat resumed>) = 3 [pid 5093] <... openat resumed>) = 4 [pid 5094] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5093] sendfile(4, 3, [88] [pid 5094] <... openat resumed>) = 4 [ 75.320152][ T5090] syz-executor326 (5090): drop_caches: 1 [ 75.340692][ T5093] syz-executor326 (5093): drop_caches: 1 [ 75.351486][ T5089] syz-executor326 (5089): drop_caches: 1 [ 75.421466][ T5094] syz-executor326 (5094): drop_caches: 1 [ 75.432690][ T5091] syz-executor326 (5091): drop_caches: 1 [ 75.444900][ T5092] syz-executor326 (5092): drop_caches: 1 [pid 5094] sendfile(4, 3, [88] [pid 5090] <... sendfile resumed> => [103], 15) = 15 [pid 5090] memfd_create("syzkaller", 0) = 5 [ 75.655193][ T5090] syz-executor326 (5090): drop_caches: 1 [pid 5090] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5089] <... sendfile resumed> => [103], 15) = 15 [pid 5089] memfd_create("syzkaller", 0) = 5 [pid 5089] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 75.707806][ T5089] syz-executor326 (5089): drop_caches: 1 [ 75.736747][ T5093] syz-executor326 (5093): drop_caches: 1 [pid 5093] <... sendfile resumed> => [103], 15) = 15 [pid 5093] memfd_create("syzkaller", 0) = 5 [pid 5093] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5094] <... sendfile resumed> => [103], 15) = 15 [pid 5094] memfd_create("syzkaller", 0 [pid 5090] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5094] <... memfd_create resumed>) = 5 [pid 5094] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5089] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5091] <... sendfile resumed> => [103], 15) = 15 [pid 5091] memfd_create("syzkaller", 0) = 5 [pid 5091] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5092] <... sendfile resumed> => [103], 15) = 15 [pid 5091] <... mmap resumed>) = 0x7f87cd1f6000 [ 75.766966][ T5094] syz-executor326 (5094): drop_caches: 1 [ 75.788744][ T5092] syz-executor326 (5092): drop_caches: 1 [ 75.792588][ T5091] syz-executor326 (5091): drop_caches: 1 [pid 5092] memfd_create("syzkaller", 0) = 5 [pid 5092] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5094] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5093] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5090] <... write resumed>) = 2097152 [pid 5090] munmap(0x7f87cd1f6000, 138412032) = 0 [pid 5089] <... write resumed>) = 2097152 [pid 5090] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5089] munmap(0x7f87cd1f6000, 138412032 [pid 5091] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5090] <... openat resumed>) = 6 [pid 5089] <... munmap resumed>) = 0 [pid 5090] ioctl(6, LOOP_SET_FD, 5 [pid 5089] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5090] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5089] <... openat resumed>) = 6 [pid 5090] ioctl(6, LOOP_CLR_FD [pid 5089] ioctl(6, LOOP_SET_FD, 5 [pid 5090] <... ioctl resumed>) = 0 [pid 5089] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5089] ioctl(6, LOOP_CLR_FD) = 0 [pid 5090] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5090] close(6) = 0 [pid 5089] ioctl(6, LOOP_SET_FD, 5 [pid 5090] close(5 [pid 5089] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5092] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5094] <... write resumed>) = 2097152 [pid 5089] close(6) = 0 [pid 5094] munmap(0x7f87cd1f6000, 138412032) = 0 [pid 5089] close(5 [pid 5094] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 6 [pid 5094] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5094] ioctl(6, LOOP_CLR_FD) = 0 [pid 5094] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5094] close(6) = 0 [pid 5094] close(5 [pid 5093] <... write resumed>) = 2097152 [pid 5093] munmap(0x7f87cd1f6000, 138412032 [pid 5090] <... close resumed>) = 0 [pid 5089] <... close resumed>) = 0 [pid 5090] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5093] <... munmap resumed>) = 0 [pid 5091] <... write resumed>) = 2097152 [pid 5090] <... open resumed>) = 5 [pid 5089] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5090] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5089] <... open resumed>) = 5 [pid 5093] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5091] munmap(0x7f87cd1f6000, 138412032 [pid 5089] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5094] <... close resumed>) = 0 [pid 5093] <... openat resumed>) = 6 [pid 5094] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5091] <... munmap resumed>) = 0 [pid 5090] <... pwritev resumed>) = 103 [pid 5090] exit_group(0 [pid 5094] <... open resumed>) = 5 [pid 5093] ioctl(6, LOOP_SET_FD, 5 [pid 5092] <... write resumed>) = 2097152 [pid 5091] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5090] <... exit_group resumed>) = ? [pid 5089] <... pwritev resumed>) = 103 [pid 5094] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5092] munmap(0x7f87cd1f6000, 138412032 [pid 5094] <... pwritev resumed>) = 103 [pid 5093] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5091] <... openat resumed>) = 6 [pid 5090] +++ exited with 0 +++ [pid 5089] exit_group(0 [pid 5094] exit_group(0 [pid 5093] ioctl(6, LOOP_CLR_FD [pid 5091] ioctl(6, LOOP_SET_FD, 5 [pid 5089] <... exit_group resumed>) = ? [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5090, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=25 /* 0.25 s */} --- [pid 5094] <... exit_group resumed>) = ? [pid 5092] <... munmap resumed>) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5060] ioctl(3, LOOP_CLR_FD) = 0 [pid 5060] close(3 [pid 5093] <... ioctl resumed>) = 0 [pid 5091] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5089] +++ exited with 0 +++ [pid 5060] <... close resumed>) = 0 [pid 5091] ioctl(6, LOOP_CLR_FD) = 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5089, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=22 /* 0.22 s */} --- [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5095 attached [pid 5094] +++ exited with 0 +++ [pid 5095] set_robust_list(0x555556b26660, 24 [pid 5093] ioctl(6, LOOP_SET_FD, 5 [pid 5091] ioctl(6, LOOP_SET_FD, 5 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5094, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=28 /* 0.28 s */} --- [pid 5095] <... set_robust_list resumed>) = 0 [pid 5093] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5091] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... clone resumed>, child_tidptr=0x555556b26650) = 5095 [pid 5095] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5093] close(6 [pid 5091] close(6 [pid 5095] <... prctl resumed>) = 0 [pid 5093] <... close resumed>) = 0 [pid 5092] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5091] <... close resumed>) = 0 [pid 5070] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5095] setpgid(0, 0 [pid 5093] close(5 [pid 5092] <... openat resumed>) = 6 [pid 5091] close(5 [pid 5070] <... openat resumed>) = 3 [pid 5095] <... setpgid resumed>) = 0 [pid 5092] ioctl(6, LOOP_SET_FD, 5 [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5061] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5092] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5070] <... ioctl resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5092] ioctl(6, LOOP_CLR_FD [pid 5070] close(3 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5092] <... ioctl resumed>) = 0 [pid 5070] <... close resumed>) = 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] close(3./strace-static-x86_64: Process 5096 attached ) = 0 [pid 5096] set_robust_list(0x555556b26660, 24 [pid 5092] ioctl(6, LOOP_SET_FD, 5 [pid 5070] <... clone resumed>, child_tidptr=0x555556b26650) = 5096 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5096] <... set_robust_list resumed>) = 0 [pid 5095] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5092] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5096] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5095] <... openat resumed>) = 3 [pid 5092] close(6 [pid 5096] <... prctl resumed>) = 0 [pid 5095] write(3, "1000", 4 [pid 5092] <... close resumed>) = 0 [pid 5096] setpgid(0, 0 [pid 5095] <... write resumed>) = 4 [pid 5092] close(5 [pid 5096] <... setpgid resumed>) = 0 [pid 5095] close(3 [pid 5096] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5061] <... clone resumed>, child_tidptr=0x555556b26650) = 5097 [pid 5096] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5097 attached [pid 5096] write(3, "1000", 4 [pid 5097] set_robust_list(0x555556b26660, 24 [pid 5096] <... write resumed>) = 4 [pid 5097] <... set_robust_list resumed>) = 0 [pid 5096] close(3 [pid 5097] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5096] <... close resumed>) = 0 [pid 5097] <... prctl resumed>) = 0 [pid 5096] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5097] setpgid(0, 0 [pid 5096] <... openat resumed>) = 3 [pid 5095] <... close resumed>) = 0 [pid 5093] <... close resumed>) = 0 [pid 5091] <... close resumed>) = 0 [pid 5097] <... setpgid resumed>) = 0 [pid 5096] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5095] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5093] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5091] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5097] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5095] <... openat resumed>) = 3 [pid 5093] <... open resumed>) = 5 [pid 5092] <... close resumed>) = 0 [pid 5091] <... open resumed>) = 5 [pid 5095] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5093] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5092] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5091] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5097] <... openat resumed>) = 3 [pid 5096] <... openat resumed>) = 4 [pid 5095] <... openat resumed>) = 4 [pid 5092] <... open resumed>) = 5 [pid 5095] sendfile(4, 3, [88] [pid 5092] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5096] sendfile(4, 3, [88] [pid 5097] write(3, "1000", 4 [pid 5093] <... pwritev resumed>) = 103 [pid 5092] <... pwritev resumed>) = 103 [pid 5091] <... pwritev resumed>) = 103 [pid 5093] exit_group(0 [pid 5092] exit_group(0 [pid 5091] exit_group(0 [pid 5093] <... exit_group resumed>) = ? [pid 5092] <... exit_group resumed>) = ? [pid 5091] <... exit_group resumed>) = ? [pid 5097] <... write resumed>) = 4 [pid 5097] close(3) = 0 [pid 5097] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5092] +++ exited with 0 +++ [pid 5091] +++ exited with 0 +++ [pid 5097] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5092, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=29 /* 0.29 s */} --- [pid 5062] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5091, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=22 /* 0.22 s */} --- [pid 5097] <... openat resumed>) = 4 [pid 5097] sendfile(4, 3, [88] [pid 5093] +++ exited with 0 +++ [pid 5064] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5093, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=25 /* 0.25 s */} --- [pid 5064] <... openat resumed>) = 3 [pid 5067] restart_syscall(<... resuming interrupted clone ...> [pid 5064] ioctl(3, LOOP_CLR_FD [pid 5067] <... restart_syscall resumed>) = 0 [pid 5064] <... ioctl resumed>) = 0 [pid 5064] close(3 [pid 5062] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5064] <... close resumed>) = 0 [pid 5062] <... openat resumed>) = 3 [pid 5067] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] <... openat resumed>) = 3 [pid 5062] ioctl(3, LOOP_CLR_FD [pid 5067] ioctl(3, LOOP_CLR_FD [pid 5062] <... ioctl resumed>) = 0 [pid 5067] <... ioctl resumed>) = 0 [pid 5062] close(3 [pid 5067] close(3 [pid 5064] <... clone resumed>, child_tidptr=0x555556b26650) = 5098 [pid 5062] <... close resumed>) = 0 [pid 5067] <... close resumed>) = 0 [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5098 attached [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5100 attached ./strace-static-x86_64: Process 5099 attached [pid 5098] set_robust_list(0x555556b26660, 24 [pid 5062] <... clone resumed>, child_tidptr=0x555556b26650) = 5099 [pid 5067] <... clone resumed>, child_tidptr=0x555556b26650) = 5100 [pid 5100] set_robust_list(0x555556b26660, 24 [pid 5099] set_robust_list(0x555556b26660, 24 [pid 5098] <... set_robust_list resumed>) = 0 [pid 5100] <... set_robust_list resumed>) = 0 [pid 5099] <... set_robust_list resumed>) = 0 [pid 5098] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5100] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5099] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5098] <... prctl resumed>) = 0 [pid 5099] <... prctl resumed>) = 0 [pid 5098] setpgid(0, 0 [pid 5100] <... prctl resumed>) = 0 [pid 5099] setpgid(0, 0 [pid 5098] <... setpgid resumed>) = 0 [pid 5100] setpgid(0, 0) = 0 [pid 5099] <... setpgid resumed>) = 0 [pid 5098] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5099] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5098] <... openat resumed>) = 3 [pid 5100] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5098] write(3, "1000", 4 [pid 5099] <... openat resumed>) = 3 [pid 5098] <... write resumed>) = 4 [pid 5100] <... openat resumed>) = 3 [pid 5098] close(3) = 0 [pid 5099] write(3, "1000", 4 [pid 5098] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5098] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5100] write(3, "1000", 4 [pid 5099] <... write resumed>) = 4 [pid 5098] <... openat resumed>) = 4 [pid 5100] <... write resumed>) = 4 [pid 5098] sendfile(4, 3, [88] [pid 5099] close(3 [pid 5100] close(3 [pid 5099] <... close resumed>) = 0 [pid 5100] <... close resumed>) = 0 [pid 5099] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5100] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5099] <... openat resumed>) = 3 [pid 5100] <... openat resumed>) = 3 [pid 5099] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5100] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5099] <... openat resumed>) = 4 [pid 5099] sendfile(4, 3, [88] [pid 5100] <... openat resumed>) = 4 [ 76.562946][ T5095] syz-executor326 (5095): drop_caches: 1 [ 76.586197][ T5096] syz-executor326 (5096): drop_caches: 1 [ 76.605917][ T5097] syz-executor326 (5097): drop_caches: 1 [ 76.648429][ T5100] syz-executor326 (5100): drop_caches: 1 [ 76.669918][ T5099] syz-executor326 (5099): drop_caches: 1 [ 76.707798][ T5098] syz-executor326 (5098): drop_caches: 1 [pid 5100] sendfile(4, 3, [88] [pid 5095] <... sendfile resumed> => [103], 15) = 15 [pid 5095] memfd_create("syzkaller", 0) = 5 [pid 5095] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 76.914771][ T5095] syz-executor326 (5095): drop_caches: 1 [pid 5096] <... sendfile resumed> => [103], 15) = 15 [pid 5096] memfd_create("syzkaller", 0) = 5 [pid 5096] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5097] <... sendfile resumed> => [103], 15) = 15 [pid 5096] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5097] memfd_create("syzkaller", 0) = 5 [pid 5097] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5100] <... sendfile resumed> => [103], 15) = 15 [pid 5099] <... sendfile resumed> => [103], 15) = 15 [pid 5095] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5100] memfd_create("syzkaller", 0 [pid 5099] memfd_create("syzkaller", 0 [pid 5100] <... memfd_create resumed>) = 5 [pid 5100] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5099] <... memfd_create resumed>) = 5 [ 76.976123][ T5096] syz-executor326 (5096): drop_caches: 1 [ 76.987097][ T5097] syz-executor326 (5097): drop_caches: 1 [ 77.006609][ T5100] syz-executor326 (5100): drop_caches: 1 [ 77.013462][ T5099] syz-executor326 (5099): drop_caches: 1 [pid 5099] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5097] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5098] <... sendfile resumed> => [103], 15) = 15 [pid 5096] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5098] memfd_create("syzkaller", 0 [pid 5095] <... write resumed>) = 2097152 [pid 5095] munmap(0x7f87cd1f6000, 138412032 [pid 5100] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5095] <... munmap resumed>) = 0 [pid 5098] <... memfd_create resumed>) = 5 [pid 5098] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 77.075032][ T5098] syz-executor326 (5098): drop_caches: 1 [pid 5095] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5095] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5095] ioctl(6, LOOP_CLR_FD [pid 5099] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5095] <... ioctl resumed>) = 0 [pid 5100] <... write resumed>) = 2097152 [pid 5096] <... write resumed>) = 2097152 [pid 5095] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5100] munmap(0x7f87cd1f6000, 138412032 [pid 5099] <... write resumed>) = 2097152 [pid 5095] close(6 [pid 5096] munmap(0x7f87cd1f6000, 138412032 [pid 5095] <... close resumed>) = 0 [pid 5095] close(5 [pid 5096] <... munmap resumed>) = 0 [pid 5100] <... munmap resumed>) = 0 [pid 5099] munmap(0x7f87cd1f6000, 138412032 [pid 5098] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5097] <... write resumed>) = 2097152 [pid 5096] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 6 [pid 5100] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5097] munmap(0x7f87cd1f6000, 138412032 [pid 5095] <... close resumed>) = 0 [pid 5100] <... openat resumed>) = 6 [pid 5099] <... munmap resumed>) = 0 [pid 5096] ioctl(6, LOOP_SET_FD, 5 [pid 5095] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5100] ioctl(6, LOOP_SET_FD, 5 [pid 5099] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5096] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5095] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5100] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5099] <... openat resumed>) = 6 [pid 5096] ioctl(6, LOOP_CLR_FD [pid 5100] ioctl(6, LOOP_CLR_FD [pid 5099] ioctl(6, LOOP_SET_FD, 5 [pid 5096] <... ioctl resumed>) = 0 [pid 5100] <... ioctl resumed>) = 0 [pid 5099] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5099] ioctl(6, LOOP_CLR_FD) = 0 [pid 5096] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5100] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5099] ioctl(6, LOOP_SET_FD, 5 [pid 5100] close(6 [pid 5099] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5100] <... close resumed>) = 0 [pid 5099] close(6 [pid 5100] close(5 [pid 5099] <... close resumed>) = 0 [pid 5096] close(6 [pid 5099] close(5 [pid 5097] <... munmap resumed>) = 0 [pid 5096] <... close resumed>) = 0 [pid 5095] <... pwritev resumed>) = 103 [pid 5097] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5096] close(5 [pid 5098] <... write resumed>) = 2097152 [pid 5097] <... openat resumed>) = 6 [pid 5095] exit_group(0 [pid 5100] <... close resumed>) = 0 [pid 5095] <... exit_group resumed>) = ? [pid 5097] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5097] ioctl(6, LOOP_CLR_FD) = 0 [pid 5095] +++ exited with 0 +++ [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5095, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=25 /* 0.25 s */} --- [pid 5060] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5060] ioctl(3, LOOP_CLR_FD) = 0 [pid 5097] ioctl(6, LOOP_SET_FD, 5 [pid 5060] close(3) = 0 [pid 5097] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5097] close(6./strace-static-x86_64: Process 5101 attached ) = 0 [pid 5060] <... clone resumed>, child_tidptr=0x555556b26650) = 5101 [pid 5097] close(5 [pid 5101] set_robust_list(0x555556b26660, 24 [pid 5099] <... close resumed>) = 0 [pid 5096] <... close resumed>) = 0 [pid 5101] <... set_robust_list resumed>) = 0 [pid 5101] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5098] munmap(0x7f87cd1f6000, 138412032 [pid 5101] <... prctl resumed>) = 0 [pid 5101] setpgid(0, 0 [pid 5099] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5096] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5101] <... setpgid resumed>) = 0 [pid 5099] <... open resumed>) = 5 [pid 5096] <... open resumed>) = 5 [pid 5099] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5096] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5101] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5100] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5101] <... openat resumed>) = 3 [pid 5100] <... open resumed>) = 5 [pid 5100] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5101] write(3, "1000", 4 [pid 5098] <... munmap resumed>) = 0 [pid 5101] <... write resumed>) = 4 [pid 5098] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5101] close(3 [pid 5098] <... openat resumed>) = 6 [pid 5101] <... close resumed>) = 0 [pid 5098] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [ 77.313748][ T12] [ 77.316125][ T12] ====================================================== [ 77.323151][ T12] WARNING: possible circular locking dependency detected [ 77.330262][ T12] 6.7.0-rc1-syzkaller-00019-gc42d9eeef8e5 #0 Not tainted [ 77.337295][ T12] ------------------------------------------------------ [ 77.344339][ T12] kworker/u4:1/12 is trying to acquire lock: [ 77.350328][ T12] ffff8880766e99c0 (&rl->lock){++++}-{3:3}, at: ntfs_read_folio+0x1308/0x23e0 [ 77.359284][ T12] [pid 5101] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5098] ioctl(6, LOOP_CLR_FD [pid 5101] <... openat resumed>) = 3 [pid 5100] <... pwritev resumed>) = 103 [pid 5099] <... pwritev resumed>) = 103 [pid 5097] <... close resumed>) = 0 [pid 5096] <... pwritev resumed>) = 103 [pid 5100] exit_group(0 [pid 5099] exit_group(0 [pid 5098] <... ioctl resumed>) = 0 [pid 5099] <... exit_group resumed>) = ? [pid 5096] exit_group(0 [pid 5100] <... exit_group resumed>) = ? [pid 5099] +++ exited with 0 +++ [pid 5096] <... exit_group resumed>) = ? [pid 5100] +++ exited with 0 +++ [pid 5097] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5096] +++ exited with 0 +++ [pid 5098] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5098] close(6 [pid 5097] <... open resumed>) = 5 [pid 5098] <... close resumed>) = 0 [pid 5098] close(5 [pid 5097] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5098] <... close resumed>) = 0 [pid 5098] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5101] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5100, si_uid=0, si_status=0, si_utime=0, si_stime=28 /* 0.28 s */} --- [pid 5101] <... openat resumed>) = 4 [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5096, si_uid=0, si_status=0, si_utime=0, si_stime=25 /* 0.25 s */} --- [pid 5101] sendfile(4, 3, [88] [pid 5070] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5067] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5067] ioctl(3, LOOP_CLR_FD [pid 5070] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5067] <... ioctl resumed>) = 0 [pid 5070] <... openat resumed>) = 3 [pid 5067] close(3 [pid 5098] <... open resumed>) = 5 [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5067] <... close resumed>) = 0 [pid 5098] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5070] <... ioctl resumed>) = 0 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5070] close(3) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] <... clone resumed>, child_tidptr=0x555556b26650) = 5102 [pid 5070] <... clone resumed>, child_tidptr=0x555556b26650) = 5103 [ 77.359284][ T12] but task is already holding lock: [ 77.366685][ T12] ffff8880766ed410 (&ni->mrec_lock){+.+.}-{3:3}, at: map_mft_record+0x4c/0x630 [ 77.375708][ T12] [ 77.375708][ T12] which lock already depends on the new lock. [ 77.375708][ T12] [ 77.386131][ T12] [ 77.386131][ T12] the existing dependency chain (in reverse order) is: [ 77.395163][ T12] [ 77.395163][ T12] -> #1 (&ni->mrec_lock){+.+.}-{3:3}: [ 77.402760][ T12] lock_acquire+0x1e3/0x530 [ 77.407821][ T12] __mutex_lock+0x136/0xd60 [ 77.412906][ T12] map_mft_record+0x4c/0x630 [ 77.418045][ T12] ntfs_attr_extend_allocation+0x2d0/0x3ec0 [ 77.424498][ T12] ntfs_file_write_iter+0x37e/0x1970 [ 77.430332][ T12] do_iter_readv_writev+0x330/0x4a0 [ 77.436088][ T12] do_iter_write+0x1f6/0x8d0 [ 77.441253][ T12] do_pwritev+0x21a/0x360 [ 77.446141][ T12] do_syscall_64+0x45/0x110 [ 77.451193][ T12] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 77.457660][ T12] [ 77.457660][ T12] -> #0 (&rl->lock){++++}-{3:3}: [ 77.464829][ T12] validate_chain+0x18e4/0x59f0 [ 77.470239][ T12] __lock_acquire+0x1345/0x1fd0 [ 77.475661][ T12] lock_acquire+0x1e3/0x530 [ 77.480701][ T12] down_read+0xb1/0xa40 [ 77.485405][ T12] ntfs_read_folio+0x1308/0x23e0 [ 77.490884][ T12] filemap_read_folio+0x19c/0x780 [ 77.496469][ T12] do_read_cache_folio+0x134/0x810 [ 77.502137][ T12] do_read_cache_page+0x30/0x200 [ 77.507627][ T12] ntfs_sync_mft_mirror+0x25f/0x1ae0 [ 77.513449][ T12] write_mft_record_nolock+0x1155/0x18f0 [ 77.519627][ T12] write_mft_record+0x149/0x310 [ 77.525023][ T12] __ntfs_write_inode+0x703/0xbb0 [ 77.530582][ T12] __writeback_single_inode+0x69b/0xfc0 [ 77.536678][ T12] writeback_sb_inodes+0x8e3/0x1220 [ 77.542448][ T12] __writeback_inodes_wb+0x11b/0x260 [ 77.548274][ T12] wb_writeback+0x461/0xc70 [ 77.553318][ T12] wb_workfn+0xc33/0xfb0 [ 77.558103][ T12] process_scheduled_works+0x90f/0x1420 [ 77.564199][ T12] worker_thread+0xa5f/0x1000 [ 77.569418][ T12] kthread+0x2d3/0x370 [ 77.574024][ T12] ret_from_fork+0x48/0x80 [ 77.578990][ T12] ret_from_fork_asm+0x11/0x20 [ 77.584315][ T12] [ 77.584315][ T12] other info that might help us debug this: [ 77.584315][ T12] [ 77.594552][ T12] Possible unsafe locking scenario: [ 77.594552][ T12] [ 77.602014][ T12] CPU0 CPU1 [ 77.607392][ T12] ---- ---- [ 77.612754][ T12] lock(&ni->mrec_lock); [ 77.617093][ T12] lock(&rl->lock); [ 77.623506][ T12] lock(&ni->mrec_lock); [ 77.630381][ T12] rlock(&rl->lock); [ 77.634397][ T12] [ 77.634397][ T12] *** DEADLOCK *** [ 77.634397][ T12] [ 77.642555][ T12] 4 locks held by kworker/u4:1/12: [ 77.647660][ T12] #0: ffff8880146a9d38 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 [ 77.658916][ T12] #1: ffffc90000117d20 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x825/0x1420 [ 77.671406][ T12] #2: ffff88801ee000e0 (&type->s_umount_key#66){++++}-{3:3}, at: super_trylock_shared+0x22/0xf0 [ 77.681942][ T12] #3: ffff8880766ed410 (&ni->mrec_lock){+.+.}-{3:3}, at: map_mft_record+0x4c/0x630 [ 77.691337][ T12] [ 77.691337][ T12] stack backtrace: [ 77.697211][ T12] CPU: 1 PID: 12 Comm: kworker/u4:1 Not tainted 6.7.0-rc1-syzkaller-00019-gc42d9eeef8e5 #0 [ 77.707177][ T12] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023 [ 77.717252][ T12] Workqueue: writeback wb_workfn (flush-7:1) [ 77.723273][ T12] Call Trace: [ 77.726560][ T12] [ 77.729487][ T12] dump_stack_lvl+0x1e7/0x2d0 [ 77.734173][ T12] ? nf_tcp_handle_invalid+0x650/0x650 [ 77.739651][ T12] ? print_circular_bug+0x12b/0x1a0 [ 77.744857][ T12] check_noncircular+0x366/0x490 [ 77.749801][ T12] ? noop_count+0x30/0x30 [ 77.754134][ T12] ? print_deadlock_bug+0x610/0x610 [ 77.759345][ T12] ? lockdep_lock+0x123/0x2b0 [ 77.764062][ T12] ? check_noncircular+0x259/0x490 [ 77.769200][ T12] ? check_path+0x21/0x40 [ 77.773564][ T12] ? _find_first_zero_bit+0xd4/0x100 [ 77.778849][ T12] validate_chain+0x18e4/0x59f0 [ 77.783705][ T12] ? validate_chain+0x15a1/0x59f0 [ 77.788737][ T12] ? reacquire_held_locks+0x690/0x690 [ 77.794128][ T12] ? reacquire_held_locks+0x690/0x690 [ 77.799499][ T12] ? look_up_lock_class+0x77/0x160 [ 77.804614][ T12] ? register_lock_class+0x102/0x970 [ 77.809895][ T12] ? is_dynamic_key+0x260/0x260 [ 77.814758][ T12] ? mark_lock+0x9a/0x350 [ 77.819088][ T12] __lock_acquire+0x1345/0x1fd0 [ 77.823954][ T12] lock_acquire+0x1e3/0x530 [ 77.828448][ T12] ? ntfs_read_folio+0x1308/0x23e0 [ 77.833605][ T12] ? read_lock_is_recursive+0x20/0x20 [ 77.839014][ T12] ? __might_sleep+0xe0/0xe0 [ 77.843646][ T12] ? mark_lock+0x9a/0x350 [ 77.847965][ T12] down_read+0xb1/0xa40 [ 77.852149][ T12] ? ntfs_read_folio+0x1308/0x23e0 [ 77.857280][ T12] ? print_irqtrace_events+0x220/0x220 [ 77.862735][ T12] ? __down_common+0x7b0/0x7b0 [ 77.867527][ T12] ? _raw_read_unlock_irqrestore+0x8f/0x140 [ 77.873419][ T12] ? lockdep_hardirqs_on+0x98/0x140 [ 77.878618][ T12] ? _raw_read_unlock_irqrestore+0xdd/0x140 [ 77.884525][ T12] ? _raw_read_unlock+0x40/0x40 [ 77.889378][ T12] ? create_empty_buffers+0x53e/0x740 [ 77.894772][ T12] ntfs_read_folio+0x1308/0x23e0 [ 77.899731][ T12] ? ntfs_writepage+0x1630/0x1630 [ 77.904761][ T12] ? folio_add_lru+0x9d0/0x9d0 [ 77.909554][ T12] ? folio_add_lru+0x4b2/0x9d0 [ 77.914362][ T12] ? folio_add_lru+0x27b/0x9d0 [ 77.919125][ T12] filemap_read_folio+0x19c/0x780 [ 77.924158][ T12] ? ntfs_writepage+0x1630/0x1630 [ 77.929182][ T12] ? maybe_unlock_mmap_for_io+0xe0/0xe0 [ 77.934731][ T12] ? seqcount_lockdep_reader_access+0x1d7/0x220 [ 77.940969][ T12] do_read_cache_folio+0x134/0x810 [ 77.946124][ T12] ? ntfs_writepage+0x1630/0x1630 [ 77.951143][ T12] do_read_cache_page+0x30/0x200 [ 77.956093][ T12] ntfs_sync_mft_mirror+0x25f/0x1ae0 [ 77.961415][ T12] ? submit_bio_noacct_nocheck+0xa2f/0xc70 [ 77.967254][ T12] ? should_fail_request+0x80/0x80 [ 77.972405][ T12] ? __mark_mft_record_dirty+0x180/0x180 [ 77.978049][ T12] write_mft_record_nolock+0x1155/0x18f0 [ 77.983692][ T12] ? ntfs_unmap_page+0x260/0x260 [ 77.988632][ T12] ? lockdep_hardirqs_on+0x98/0x140 [ 77.993830][ T12] write_mft_record+0x149/0x310 [ 77.998686][ T12] __ntfs_write_inode+0x703/0xbb0 [ 78.003709][ T12] __writeback_single_inode+0x69b/0xfc0 [ 78.009263][ T12] writeback_sb_inodes+0x8e3/0x1220 [ 78.014477][ T12] ? queue_io+0x570/0x570 [ 78.018826][ T12] ? _raw_spin_unlock+0x28/0x40 [ 78.023677][ T12] ? move_expired_inodes+0x7c8/0x810 [ 78.028998][ T12] ? do_raw_spin_lock+0x14e/0x370 [ 78.034077][ T12] __writeback_inodes_wb+0x11b/0x260 [ 78.039378][ T12] wb_writeback+0x461/0xc70 [ 78.043900][ T12] ? percpu_ref_tryget+0x260/0x260 [ 78.049058][ T12] wb_workfn+0xc33/0xfb0 [ 78.053332][ T12] ? inode_wait_for_writeback+0x290/0x290 [ 78.059065][ T12] ? lockdep_hardirqs_on_prepare+0x43c/0x780 [ 78.065062][ T12] ? print_irqtrace_events+0x220/0x220 [ 78.070530][ T12] ? process_scheduled_works+0x825/0x1420 [ 78.076251][ T12] process_scheduled_works+0x90f/0x1420 [ 78.081803][ T12] ? assign_work+0x3d0/0x3d0 [ 78.086405][ T12] ? assign_work+0x364/0x3d0 [ 78.091024][ T12] worker_thread+0xa5f/0x1000 [ 78.095719][ T12] kthread+0x2d3/0x370 [ 78.099792][ T12] ? pr_cont_work+0x5e0/0x5e0 [ 78.104493][ T12] ? kthread_blkcg+0xd0/0xd0 [ 78.109082][ T12] ret_from_fork+0x48/0x80 ./strace-static-x86_64: Process 5103 attached ./strace-static-x86_64: Process 5102 attached [pid 5062] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5099, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=23 /* 0.23 s */} --- [pid 5103] set_robust_list(0x555556b26660, 24 [pid 5102] set_robust_list(0x555556b26660, 24 [pid 5103] <... set_robust_list resumed>) = 0 [pid 5102] <... set_robust_list resumed>) = 0 [pid 5062] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5102] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5062] <... openat resumed>) = 3 [pid 5103] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5102] <... prctl resumed>) = 0 [pid 5062] ioctl(3, LOOP_CLR_FD [pid 5102] setpgid(0, 0 [pid 5062] <... ioctl resumed>) = 0 [pid 5103] <... prctl resumed>) = 0 [pid 5102] <... setpgid resumed>) = 0 [pid 5103] setpgid(0, 0 [pid 5102] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5062] close(3 [pid 5103] <... setpgid resumed>) = 0 [pid 5062] <... close resumed>) = 0 [pid 5102] <... openat resumed>) = 3 [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5103] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5102] write(3, "1000", 4 [pid 5062] <... clone resumed>, child_tidptr=0x555556b26650) = 5104 [pid 5102] <... write resumed>) = 4 [pid 5102] close(3) = 0 [pid 5103] write(3, "1000", 4 [pid 5102] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5103] <... write resumed>) = 4 [pid 5102] <... openat resumed>) = 3 [pid 5103] close(3 [pid 5102] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5103] <... close resumed>) = 0 [pid 5102] <... openat resumed>) = 4 [pid 5103] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5102] sendfile(4, 3, [88] [pid 5103] <... openat resumed>) = 3 [pid 5103] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5103] sendfile(4, 3, [88]./strace-static-x86_64: Process 5104 attached [pid 5104] set_robust_list(0x555556b26660, 24) = 0 [pid 5104] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5104] setpgid(0, 0) = 0 [pid 5104] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5104] write(3, "1000", 4) = 4 [pid 5104] close(3) = 0 [pid 5104] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5104] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5104] sendfile(4, 3, [88] [pid 5098] <... pwritev resumed>) = 103 [pid 5097] <... pwritev resumed>) = 103 [pid 5098] exit_group(0 [pid 5097] exit_group(0 [pid 5098] <... exit_group resumed>) = ? [pid 5097] <... exit_group resumed>) = ? [pid 5098] +++ exited with 0 +++ [pid 5097] +++ exited with 0 +++ [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5097, si_uid=0, si_status=0, si_utime=0, si_stime=25 /* 0.25 s */} --- [ 78.113540][ T12] ? kthread_blkcg+0xd0/0xd0 [ 78.118163][ T12] ret_from_fork_asm+0x11/0x20 [ 78.122948][ T12] [pid 5061] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5061] ioctl(3, LOOP_CLR_FD) = 0 [pid 5061] close(3 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5098, si_uid=0, si_status=0, si_utime=0, si_stime=25 /* 0.25 s */} --- [pid 5061] <... close resumed>) = 0 [pid 5064] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5064] ioctl(3, LOOP_CLR_FD) = 0 ./strace-static-x86_64: Process 5105 attached [pid 5064] close(3 [pid 5105] set_robust_list(0x555556b26660, 24 [pid 5064] <... close resumed>) = 0 [pid 5061] <... clone resumed>, child_tidptr=0x555556b26650) = 5105 [pid 5105] <... set_robust_list resumed>) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5105] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5064] <... clone resumed>, child_tidptr=0x555556b26650) = 5106 [pid 5105] setpgid(0, 0) = 0 ./strace-static-x86_64: Process 5106 attached [pid 5106] set_robust_list(0x555556b26660, 24) = 0 [pid 5105] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5106] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5105] <... openat resumed>) = 3 [pid 5106] <... prctl resumed>) = 0 [pid 5105] write(3, "1000", 4 [pid 5106] setpgid(0, 0 [pid 5105] <... write resumed>) = 4 [pid 5105] close(3 [pid 5106] <... setpgid resumed>) = 0 [pid 5105] <... close resumed>) = 0 [pid 5106] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5105] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5106] <... openat resumed>) = 3 [pid 5106] write(3, "1000", 4) = 4 [pid 5105] <... openat resumed>) = 3 [pid 5106] close(3 [pid 5105] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5106] <... close resumed>) = 0 [pid 5105] <... openat resumed>) = 4 [pid 5105] sendfile(4, 3, [88] [pid 5106] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5106] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 78.289628][ T5101] syz-executor326 (5101): drop_caches: 1 [ 78.379279][ T5103] syz-executor326 (5103): drop_caches: 1 [ 78.397639][ T5105] syz-executor326 (5105): drop_caches: 1 [ 78.418263][ T5102] syz-executor326 (5102): drop_caches: 1 [pid 5106] sendfile(4, 3, [88] [pid 5101] <... sendfile resumed> => [103], 15) = 15 [pid 5101] memfd_create("syzkaller", 0) = 5 [pid 5101] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 78.439847][ T5104] syz-executor326 (5104): drop_caches: 1 [ 78.467706][ T5101] syz-executor326 (5101): drop_caches: 1 [ 78.475553][ T5106] syz-executor326 (5106): drop_caches: 1 [pid 5101] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5103] <... sendfile resumed> => [103], 15) = 15 [pid 5103] memfd_create("syzkaller", 0) = 5 [pid 5103] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5104] <... sendfile resumed> => [103], 15) = 15 [pid 5101] <... write resumed>) = 2097152 [ 78.598794][ T5103] syz-executor326 (5103): drop_caches: 1 [ 78.624783][ T5104] syz-executor326 (5104): drop_caches: 1 [ 78.638822][ T5105] syz-executor326 (5105): drop_caches: 1 [pid 5105] <... sendfile resumed> => [103], 15) = 15 [pid 5102] <... sendfile resumed> => [103], 15) = 15 [pid 5101] munmap(0x7f87cd1f6000, 138412032 [pid 5105] memfd_create("syzkaller", 0 [pid 5104] memfd_create("syzkaller", 0) = 5 [pid 5104] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5105] <... memfd_create resumed>) = 5 [pid 5101] <... munmap resumed>) = 0 [pid 5106] <... sendfile resumed> => [103], 15) = 15 [pid 5105] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5101] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5105] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5101] <... openat resumed>) = 6 [pid 5101] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5101] ioctl(6, LOOP_CLR_FD) = 0 [pid 5106] memfd_create("syzkaller", 0 [pid 5103] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5102] memfd_create("syzkaller", 0 [pid 5101] ioctl(6, LOOP_SET_FD, 5 [pid 5106] <... memfd_create resumed>) = 5 [pid 5101] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5106] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5102] <... memfd_create resumed>) = 5 [pid 5101] close(6) = 0 [pid 5101] close(5 [pid 5106] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5102] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 78.662762][ T5102] syz-executor326 (5102): drop_caches: 1 [ 78.678107][ T5106] syz-executor326 (5106): drop_caches: 1 [pid 5103] <... write resumed>) = 2097152 [pid 5104] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5103] munmap(0x7f87cd1f6000, 138412032) = 0 [pid 5101] <... close resumed>) = 0 [pid 5101] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5103] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5101] <... open resumed>) = 5 [pid 5103] <... openat resumed>) = 6 [pid 5101] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5103] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5103] ioctl(6, LOOP_CLR_FD) = 0 [pid 5103] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5103] close(6) = 0 [pid 5103] close(5 [pid 5101] <... pwritev resumed>) = 103 [pid 5104] <... write resumed>) = 2097152 [pid 5101] exit_group(0) = ? [pid 5105] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5101] +++ exited with 0 +++ [pid 5106] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5103] <... close resumed>) = 0 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5101, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=15 /* 0.15 s */} --- [pid 5060] openat(AT_FDCWD, "/dev/loop0", 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 5107 attached , child_tidptr=0x555556b26650) = 5107 [pid 5107] set_robust_list(0x555556b26660, 24) = 0 [pid 5107] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5107] setpgid(0, 0) = 0 [pid 5107] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5107] write(3, "1000", 4) = 4 [pid 5107] close(3) = 0 [pid 5107] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5107] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5107] sendfile(4, 3, [88] [pid 5104] munmap(0x7f87cd1f6000, 138412032 [pid 5102] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5104] <... munmap resumed>) = 0 [pid 5104] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 6 [pid 5103] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5104] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5103] <... open resumed>) = 5 [pid 5104] ioctl(6, LOOP_CLR_FD [pid 5103] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5104] <... ioctl resumed>) = 0 [pid 5104] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5104] close(6) = 0 [pid 5103] <... pwritev resumed>) = 103 [pid 5103] exit_group(0) = ? [pid 5103] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5103, si_uid=0, si_status=0, si_utime=0, si_stime=18 /* 0.18 s */} --- [pid 5070] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5104] close(5 [pid 5070] ioctl(3, LOOP_CLR_FD [pid 5104] <... close resumed>) = 0 [pid 5070] <... ioctl resumed>) = 0 [pid 5070] close(3) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5108 attached [pid 5108] set_robust_list(0x555556b26660, 24) = 0 [pid 5108] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5108] setpgid(0, 0 [pid 5102] <... write resumed>) = 2097152 [pid 5070] <... clone resumed>, child_tidptr=0x555556b26650) = 5108 [pid 5108] <... setpgid resumed>) = 0 [pid 5108] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5108] write(3, "1000", 4) = 4 [pid 5108] close(3) = 0 [pid 5108] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5108] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5108] sendfile(4, 3, [88] [pid 5104] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5105] <... write resumed>) = 2097152 [pid 5105] munmap(0x7f87cd1f6000, 138412032 [pid 5104] <... open resumed>) = 5 [pid 5106] <... write resumed>) = 2097152 [pid 5105] <... munmap resumed>) = 0 [pid 5104] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5105] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 6 [pid 5102] munmap(0x7f87cd1f6000, 138412032 [pid 5105] ioctl(6, LOOP_SET_FD, 5 [pid 5106] munmap(0x7f87cd1f6000, 138412032 [pid 5104] <... pwritev resumed>) = 103 [pid 5102] <... munmap resumed>) = 0 [pid 5105] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5104] exit_group(0) = ? [pid 5106] <... munmap resumed>) = 0 [pid 5105] ioctl(6, LOOP_CLR_FD [pid 5104] +++ exited with 0 +++ [pid 5102] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5106] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5105] <... ioctl resumed>) = 0 [pid 5102] <... openat resumed>) = 6 [pid 5106] <... openat resumed>) = 6 [pid 5102] ioctl(6, LOOP_SET_FD, 5 [pid 5062] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5104, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=15 /* 0.15 s */} --- [pid 5102] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5062] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5106] ioctl(6, LOOP_SET_FD, 5 [pid 5102] ioctl(6, LOOP_CLR_FD [pid 5106] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5102] <... ioctl resumed>) = 0 [pid 5106] ioctl(6, LOOP_CLR_FD [pid 5105] ioctl(6, LOOP_SET_FD, 5 [pid 5062] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5106] <... ioctl resumed>) = 0 [pid 5105] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5062] <... openat resumed>) = 3 [pid 5062] ioctl(3, LOOP_CLR_FD) = 0 [pid 5062] close(3) = 0 [pid 5102] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5102] close(6) = 0 [pid 5106] ioctl(6, LOOP_SET_FD, 5 [pid 5102] close(5./strace-static-x86_64: Process 5109 attached [pid 5062] <... clone resumed>, child_tidptr=0x555556b26650) = 5109 [pid 5105] close(6) = 0 [pid 5109] set_robust_list(0x555556b26660, 24 [pid 5106] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5109] <... set_robust_list resumed>) = 0 [pid 5106] close(6 [pid 5109] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5106] <... close resumed>) = 0 [pid 5105] close(5 [pid 5109] <... prctl resumed>) = 0 [pid 5109] setpgid(0, 0 [pid 5106] close(5 [pid 5109] <... setpgid resumed>) = 0 [pid 5106] <... close resumed>) = 0 [pid 5102] <... close resumed>) = 0 [pid 5109] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5106] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5102] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5102] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5106] <... open resumed>) = 5 [pid 5106] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5105] <... close resumed>) = 0 [pid 5109] <... openat resumed>) = 3 [pid 5106] <... pwritev resumed>) = 103 [pid 5102] <... pwritev resumed>) = 103 [pid 5105] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5102] exit_group(0 [pid 5105] <... open resumed>) = 5 [pid 5102] <... exit_group resumed>) = ? [pid 5105] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5102] +++ exited with 0 +++ [pid 5109] write(3, "1000", 4 [pid 5106] exit_group(0 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5102, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} --- [pid 5109] <... write resumed>) = 4 [pid 5106] <... exit_group resumed>) = ? [pid 5109] close(3 [pid 5067] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5105] <... pwritev resumed>) = 103 [pid 5067] <... openat resumed>) = 3 [pid 5105] exit_group(0 [pid 5067] ioctl(3, LOOP_CLR_FD [pid 5105] <... exit_group resumed>) = ? [pid 5109] <... close resumed>) = 0 [pid 5105] +++ exited with 0 +++ [pid 5067] <... ioctl resumed>) = 0 [pid 5067] close(3 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5105, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=18 /* 0.18 s */} --- [pid 5067] <... close resumed>) = 0 [pid 5061] restart_syscall(<... resuming interrupted clone ...> [pid 5109] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5106] +++ exited with 0 +++ [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] <... restart_syscall resumed>) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop1", O_RDWR./strace-static-x86_64: Process 5110 attached [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5106, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=19 /* 0.19 s */} --- [pid 5061] <... openat resumed>) = 3 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5110] set_robust_list(0x555556b26660, 24 [pid 5064] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5061] <... ioctl resumed>) = 0 [pid 5061] close(3 [pid 5110] <... set_robust_list resumed>) = 0 [pid 5064] <... openat resumed>) = 3 [pid 5064] ioctl(3, LOOP_CLR_FD [pid 5061] <... close resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5064] <... ioctl resumed>) = 0 [pid 5110] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5064] close(3 [pid 5067] <... clone resumed>, child_tidptr=0x555556b26650) = 5110 [pid 5064] <... close resumed>) = 0 [pid 5110] <... prctl resumed>) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] <... clone resumed>, child_tidptr=0x555556b26650) = 5111 ./strace-static-x86_64: Process 5111 attached [pid 5111] set_robust_list(0x555556b26660, 24) = 0 [pid 5110] setpgid(0, 0./strace-static-x86_64: Process 5112 attached [pid 5064] <... clone resumed>, child_tidptr=0x555556b26650) = 5112 [pid 5112] set_robust_list(0x555556b26660, 24 [pid 5111] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5110] <... setpgid resumed>) = 0 [pid 5109] <... openat resumed>) = 3 [pid 5109] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5112] <... set_robust_list resumed>) = 0 [pid 5110] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5112] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5111] <... prctl resumed>) = 0 [pid 5110] <... openat resumed>) = 3 [pid 5112] <... prctl resumed>) = 0 [pid 5111] setpgid(0, 0 [pid 5110] write(3, "1000", 4 [pid 5109] <... openat resumed>) = 4 [pid 5112] setpgid(0, 0 [pid 5111] <... setpgid resumed>) = 0 [pid 5110] <... write resumed>) = 4 [pid 5109] sendfile(4, 3, [88] [pid 5111] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5110] close(3 [pid 5111] <... openat resumed>) = 3 [pid 5110] <... close resumed>) = 0 [pid 5112] <... setpgid resumed>) = 0 [pid 5111] write(3, "1000", 4) = 4 [pid 5110] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5111] close(3 [pid 5112] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5111] <... close resumed>) = 0 [pid 5110] <... openat resumed>) = 3 [pid 5111] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5110] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5111] <... openat resumed>) = 3 [pid 5111] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5110] <... openat resumed>) = 4 [pid 5111] <... openat resumed>) = 4 [pid 5110] sendfile(4, 3, [88] [pid 5111] sendfile(4, 3, [88] [pid 5112] <... openat resumed>) = 3 [pid 5112] write(3, "1000", 4) = 4 [pid 5112] close(3) = 0 [pid 5112] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5112] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 79.038046][ T5107] syz-executor326 (5107): drop_caches: 1 [ 79.057465][ T5108] syz-executor326 (5108): drop_caches: 1 [ 79.284433][ T5109] syz-executor326 (5109): drop_caches: 1 [ 79.295870][ T5111] syz-executor326 (5111): drop_caches: 1 [ 79.302417][ T5110] syz-executor326 (5110): drop_caches: 1 [ 79.320979][ T5112] syz-executor326 (5112): drop_caches: 1 [pid 5112] sendfile(4, 3, [88] [pid 5107] <... sendfile resumed> => [103], 15) = 15 [pid 5108] <... sendfile resumed> => [103], 15) = 15 [pid 5107] memfd_create("syzkaller", 0 [pid 5108] memfd_create("syzkaller", 0 [pid 5107] <... memfd_create resumed>) = 5 [ 79.364829][ T5108] syz-executor326 (5108): drop_caches: 1 [ 79.368314][ T5107] syz-executor326 (5107): drop_caches: 1 [pid 5107] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5108] <... memfd_create resumed>) = 5 [pid 5108] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5107] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5108] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5107] munmap(0x7f87cd1f6000, 138412032 [pid 5111] <... sendfile resumed> => [103], 15) = 15 [pid 5107] <... munmap resumed>) = 0 [pid 5111] memfd_create("syzkaller", 0) = 5 [pid 5111] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5107] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5107] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5107] ioctl(6, LOOP_CLR_FD) = 0 [pid 5107] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5107] close(6) = 0 [pid 5107] close(5 [pid 5108] <... write resumed>) = 2097152 [pid 5108] munmap(0x7f87cd1f6000, 138412032 [pid 5110] <... sendfile resumed> => [103], 15) = 15 [pid 5109] <... sendfile resumed> => [103], 15) = 15 [pid 5108] <... munmap resumed>) = 0 [pid 5110] memfd_create("syzkaller", 0 [pid 5109] memfd_create("syzkaller", 0 [pid 5110] <... memfd_create resumed>) = 5 [pid 5108] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5110] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5109] <... memfd_create resumed>) = 5 [pid 5108] <... openat resumed>) = 6 [pid 5110] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5108] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5108] ioctl(6, LOOP_CLR_FD [pid 5109] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5108] <... ioctl resumed>) = 0 [pid 5109] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5107] <... close resumed>) = 0 [pid 5108] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5108] close(6) = 0 [pid 5108] close(5 [ 79.546137][ T5111] syz-executor326 (5111): drop_caches: 1 [ 79.547438][ T5109] syz-executor326 (5109): drop_caches: 1 [ 79.572971][ T5110] syz-executor326 (5110): drop_caches: 1 [pid 5107] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5107] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5112] <... sendfile resumed> => [103], 15) = 15 [pid 5112] memfd_create("syzkaller", 0 [pid 5111] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5108] <... close resumed>) = 0 [pid 5107] <... pwritev resumed>) = 103 [pid 5110] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5108] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5107] exit_group(0) = ? [ 79.631438][ T5112] syz-executor326 (5112): drop_caches: 1 [pid 5108] <... open resumed>) = 5 [pid 5107] +++ exited with 0 +++ [pid 5108] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5107, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=18 /* 0.18 s */} --- [pid 5112] <... memfd_create resumed>) = 5 [pid 5060] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5108] <... pwritev resumed>) = 103 [pid 5112] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5110] <... write resumed>) = 2097152 [pid 5108] exit_group(0) = ? [pid 5060] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5112] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5060] <... openat resumed>) = 3 [pid 5110] munmap(0x7f87cd1f6000, 138412032 [pid 5108] +++ exited with 0 +++ [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5108, si_uid=0, si_status=0, si_utime=0, si_stime=20 /* 0.20 s */} --- [pid 5060] <... ioctl resumed>) = 0 [pid 5060] close(3 [pid 5070] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5060] <... close resumed>) = 0 [pid 5070] <... openat resumed>) = 3 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5110] <... munmap resumed>) = 0 [pid 5070] ioctl(3, LOOP_CLR_FD) = 0 [pid 5070] close(3) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5114 attached [pid 5111] <... write resumed>) = 2097152 [pid 5109] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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] <... clone resumed>, child_tidptr=0x555556b26650) = 5114 [pid 5060] <... clone resumed>, child_tidptr=0x555556b26650) = 5113 ./strace-static-x86_64: Process 5113 attached [pid 5114] set_robust_list(0x555556b26660, 24 [pid 5113] set_robust_list(0x555556b26660, 24 [pid 5112] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5113] <... set_robust_list resumed>) = 0 [pid 5113] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5113] setpgid(0, 0) = 0 [pid 5114] <... set_robust_list resumed>) = 0 [pid 5113] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5110] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5114] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5114] setpgid(0, 0 [pid 5110] <... openat resumed>) = 6 [pid 5114] <... setpgid resumed>) = 0 [pid 5114] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5113] <... openat resumed>) = 3 [pid 5110] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5114] <... openat resumed>) = 3 [pid 5113] write(3, "1000", 4 [pid 5111] munmap(0x7f87cd1f6000, 138412032 [pid 5110] ioctl(6, LOOP_CLR_FD [pid 5114] write(3, "1000", 4) = 4 [pid 5113] <... write resumed>) = 4 [pid 5111] <... munmap resumed>) = 0 [pid 5110] <... ioctl resumed>) = 0 [pid 5114] close(3) = 0 [pid 5113] close(3 [pid 5114] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5113] <... close resumed>) = 0 [pid 5114] <... openat resumed>) = 3 [pid 5113] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5114] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5113] <... openat resumed>) = 3 [pid 5114] sendfile(4, 3, [88] [pid 5113] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5110] ioctl(6, LOOP_SET_FD, 5 [pid 5113] <... openat resumed>) = 4 [pid 5110] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5113] sendfile(4, 3, [88] [pid 5110] close(6 [pid 5112] <... write resumed>) = 2097152 [pid 5110] <... close resumed>) = 0 [pid 5112] munmap(0x7f87cd1f6000, 138412032 [pid 5110] close(5 [pid 5112] <... munmap resumed>) = 0 [pid 5111] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 6 [pid 5111] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5111] ioctl(6, LOOP_CLR_FD) = 0 [pid 5111] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5111] close(6) = 0 [pid 5111] close(5 [pid 5112] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 6 [pid 5112] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5112] ioctl(6, LOOP_CLR_FD) = 0 [pid 5111] <... close resumed>) = 0 [pid 5109] <... write resumed>) = 2097152 [pid 5112] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5112] close(6) = 0 [pid 5112] close(5 [pid 5110] <... close resumed>) = 0 [pid 5109] munmap(0x7f87cd1f6000, 138412032 [pid 5110] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5110] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5109] <... munmap resumed>) = 0 [pid 5111] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5111] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5110] <... pwritev resumed>) = 103 [pid 5109] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5111] <... pwritev resumed>) = 103 [pid 5110] exit_group(0 [pid 5109] <... openat resumed>) = 6 [pid 5111] exit_group(0 [pid 5110] <... exit_group resumed>) = ? [pid 5109] ioctl(6, LOOP_SET_FD, 5 [pid 5111] <... exit_group resumed>) = ? [pid 5110] +++ exited with 0 +++ [pid 5109] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5111] +++ exited with 0 +++ [pid 5109] ioctl(6, LOOP_CLR_FD [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5110, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=17 /* 0.17 s */} --- [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5111, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- [pid 5109] <... ioctl resumed>) = 0 [pid 5067] restart_syscall(<... resuming interrupted clone ...> [pid 5061] restart_syscall(<... resuming interrupted clone ...> [pid 5067] <... restart_syscall resumed>) = 0 [pid 5061] <... restart_syscall resumed>) = 0 [pid 5067] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5109] ioctl(6, LOOP_SET_FD, 5 [pid 5061] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5109] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5109] close(6 [pid 5067] ioctl(3, LOOP_CLR_FD [pid 5061] <... openat resumed>) = 3 [pid 5109] <... close resumed>) = 0 [pid 5067] <... ioctl resumed>) = 0 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5109] close(5 [pid 5067] close(3) = 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5109] <... close resumed>) = 0 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] close(3) = 0 [pid 5067] <... clone resumed>, child_tidptr=0x555556b26650) = 5115 [pid 5112] <... close resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5115 attached [pid 5115] set_robust_list(0x555556b26660, 24) = 0 [pid 5115] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5061] <... clone resumed>, child_tidptr=0x555556b26650) = 5116 [pid 5115] <... prctl resumed>) = 0 [pid 5115] setpgid(0, 0) = 0 [pid 5115] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5115] write(3, "1000", 4) = 4 [pid 5115] close(3) = 0 [pid 5115] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5115] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5115] sendfile(4, 3, [88]./strace-static-x86_64: Process 5116 attached [pid 5112] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5116] set_robust_list(0x555556b26660, 24 [pid 5112] <... open resumed>) = 5 [pid 5109] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5116] <... set_robust_list resumed>) = 0 [pid 5112] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5116] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5109] <... open resumed>) = 5 [pid 5116] setpgid(0, 0) = 0 [pid 5109] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5116] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5112] <... pwritev resumed>) = 103 [pid 5116] <... openat resumed>) = 3 [pid 5112] exit_group(0 [pid 5109] <... pwritev resumed>) = 103 [pid 5109] exit_group(0 [pid 5112] <... exit_group resumed>) = ? [pid 5112] +++ exited with 0 +++ [pid 5109] <... exit_group resumed>) = ? [pid 5116] write(3, "1000", 4 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5112, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=16 /* 0.16 s */} --- [pid 5064] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5064] ioctl(3, LOOP_CLR_FD) = 0 [pid 5064] close(3) = 0 [pid 5116] <... write resumed>) = 4 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5116] close(3 [pid 5109] +++ exited with 0 +++ [pid 5116] <... close resumed>) = 0 [pid 5064] <... clone resumed>, child_tidptr=0x555556b26650) = 5117 ./strace-static-x86_64: Process 5117 attached [pid 5116] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5062] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5109, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=16 /* 0.16 s */} --- [pid 5116] <... openat resumed>) = 3 [pid 5116] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5117] set_robust_list(0x555556b26660, 24 [pid 5062] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5116] <... openat resumed>) = 4 [pid 5062] ioctl(3, LOOP_CLR_FD [pid 5117] <... set_robust_list resumed>) = 0 [pid 5062] <... ioctl resumed>) = 0 [pid 5117] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5116] sendfile(4, 3, [88] [pid 5062] close(3) = 0 [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5118 attached , child_tidptr=0x555556b26650) = 5118 [pid 5117] <... prctl resumed>) = 0 [pid 5117] setpgid(0, 0) = 0 [pid 5118] set_robust_list(0x555556b26660, 24 [pid 5117] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5118] <... set_robust_list resumed>) = 0 [pid 5118] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5117] write(3, "1000", 4) = 4 [pid 5118] <... prctl resumed>) = 0 [pid 5117] close(3 [pid 5118] setpgid(0, 0 [pid 5117] <... close resumed>) = 0 [ 79.904524][ T5114] syz-executor326 (5114): drop_caches: 1 [pid 5118] <... setpgid resumed>) = 0 [pid 5117] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5118] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5117] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5118] write(3, "1000", 4 [pid 5117] sendfile(4, 3, [88] [pid 5118] <... write resumed>) = 4 [pid 5118] close(3) = 0 [pid 5118] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5118] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 80.041003][ T5113] syz-executor326 (5113): drop_caches: 1 [ 80.094461][ T5115] syz-executor326 (5115): drop_caches: 1 [pid 5118] sendfile(4, 3, [88] [pid 5114] <... sendfile resumed> => [103], 15) = 15 [ 80.166636][ T5114] syz-executor326 (5114): drop_caches: 1 [ 80.174997][ T5116] syz-executor326 (5116): drop_caches: 1 [ 80.198179][ T5117] syz-executor326 (5117): drop_caches: 1 [pid 5114] memfd_create("syzkaller", 0) = 5 [pid 5114] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5113] <... sendfile resumed> => [103], 15) = 15 [pid 5114] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5113] memfd_create("syzkaller", 0) = 5 [pid 5113] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 80.238790][ T5118] syz-executor326 (5118): drop_caches: 1 [ 80.256471][ T5113] syz-executor326 (5113): drop_caches: 1 [pid 5114] <... write resumed>) = 2097152 [pid 5114] munmap(0x7f87cd1f6000, 138412032 [pid 5115] <... sendfile resumed> => [103], 15) = 15 [pid 5114] <... munmap resumed>) = 0 [pid 5115] memfd_create("syzkaller", 0) = 5 [pid 5115] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 80.316115][ T5115] syz-executor326 (5115): drop_caches: 1 [pid 5114] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5113] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5117] <... sendfile resumed> => [103], 15) = 15 [pid 5116] <... sendfile resumed> => [103], 15) = 15 [pid 5114] <... openat resumed>) = 6 [pid 5116] memfd_create("syzkaller", 0 [pid 5114] ioctl(6, LOOP_SET_FD, 5 [pid 5116] <... memfd_create resumed>) = 5 [pid 5114] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5114] ioctl(6, LOOP_CLR_FD) = 0 [pid 5117] memfd_create("syzkaller", 0) = 5 [pid 5116] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5114] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5116] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5114] close(6 [pid 5117] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5114] <... close resumed>) = 0 [pid 5117] <... mmap resumed>) = 0x7f87cd1f6000 [ 80.370020][ T5116] syz-executor326 (5116): drop_caches: 1 [ 80.378560][ T5117] syz-executor326 (5117): drop_caches: 1 [pid 5114] close(5) = 0 [pid 5113] <... write resumed>) = 2097152 [pid 5117] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5116] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5115] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5114] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5114] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452) = 103 [pid 5113] munmap(0x7f87cd1f6000, 138412032) = 0 [pid 5114] exit_group(0 [pid 5118] <... sendfile resumed> => [103], 15) = 15 [pid 5114] <... exit_group resumed>) = ? [pid 5118] memfd_create("syzkaller", 0) = 5 [pid 5113] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5118] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5113] <... openat resumed>) = 6 [pid 5118] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5114] +++ exited with 0 +++ [pid 5113] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5114, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=18 /* 0.18 s */} --- [pid 5113] ioctl(6, LOOP_CLR_FD) = 0 [pid 5070] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5070] ioctl(3, LOOP_CLR_FD) = 0 [pid 5070] close(3) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5113] ioctl(6, LOOP_SET_FD, 5 [pid 5070] <... clone resumed>, child_tidptr=0x555556b26650) = 5119 [pid 5113] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5113] close(6) = 0 [pid 5113] close(5./strace-static-x86_64: Process 5119 attached [pid 5116] <... write resumed>) = 2097152 [pid 5113] <... close resumed>) = 0 [pid 5119] set_robust_list(0x555556b26660, 24 [pid 5116] munmap(0x7f87cd1f6000, 138412032 [pid 5119] <... set_robust_list resumed>) = 0 [pid 5119] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5119] setpgid(0, 0) = 0 [pid 5119] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5119] write(3, "1000", 4) = 4 [pid 5119] close(3 [pid 5116] <... munmap resumed>) = 0 [pid 5119] <... close resumed>) = 0 [pid 5119] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5116] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 6 [pid 5119] <... openat resumed>) = 3 [pid 5116] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [ 80.466667][ T5118] syz-executor326 (5118): drop_caches: 1 [pid 5119] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5116] ioctl(6, LOOP_CLR_FD [pid 5113] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5119] sendfile(4, 3, [88] [pid 5116] <... ioctl resumed>) = 0 [pid 5113] <... open resumed>) = 5 [pid 5113] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5116] ioctl(6, LOOP_SET_FD, 5 [pid 5117] <... write resumed>) = 2097152 [pid 5116] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5117] munmap(0x7f87cd1f6000, 138412032 [pid 5116] close(6 [pid 5113] <... pwritev resumed>) = 103 [pid 5118] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5117] <... munmap resumed>) = 0 [pid 5116] <... close resumed>) = 0 [pid 5115] <... write resumed>) = 2097152 [pid 5113] exit_group(0 [pid 5116] close(5 [pid 5115] munmap(0x7f87cd1f6000, 138412032 [pid 5113] <... exit_group resumed>) = ? [pid 5113] +++ exited with 0 +++ [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5113, si_uid=0, si_status=0, si_utime=0, si_stime=21 /* 0.21 s */} --- [pid 5060] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop0", 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 5120 attached [pid 5120] set_robust_list(0x555556b26660, 24) = 0 [pid 5120] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5060] <... clone resumed>, child_tidptr=0x555556b26650) = 5120 [pid 5120] <... prctl resumed>) = 0 [pid 5120] setpgid(0, 0) = 0 [pid 5120] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5120] write(3, "1000", 4) = 4 [pid 5120] close(3 [pid 5115] <... munmap resumed>) = 0 [pid 5120] <... close resumed>) = 0 [pid 5117] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5120] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5117] <... openat resumed>) = 6 [pid 5115] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5120] <... openat resumed>) = 3 [pid 5120] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5115] <... openat resumed>) = 6 [pid 5115] ioctl(6, LOOP_SET_FD, 5 [pid 5120] <... openat resumed>) = 4 [pid 5117] ioctl(6, LOOP_SET_FD, 5 [pid 5115] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5120] sendfile(4, 3, [88] [pid 5117] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5117] ioctl(6, LOOP_CLR_FD [pid 5115] ioctl(6, LOOP_CLR_FD [pid 5117] <... ioctl resumed>) = 0 [pid 5115] <... ioctl resumed>) = 0 [pid 5116] <... close resumed>) = 0 [pid 5116] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5115] ioctl(6, LOOP_SET_FD, 5 [pid 5117] ioctl(6, LOOP_SET_FD, 5 [pid 5115] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5117] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5117] close(6) = 0 [pid 5117] close(5 [pid 5116] <... open resumed>) = 5 [pid 5115] close(6 [pid 5118] <... write resumed>) = 2097152 [pid 5116] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5115] <... close resumed>) = 0 [pid 5115] close(5) = 0 [pid 5117] <... close resumed>) = 0 [pid 5115] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5118] munmap(0x7f87cd1f6000, 138412032) = 0 [pid 5116] <... pwritev resumed>) = 103 [pid 5115] <... open resumed>) = 5 [pid 5116] exit_group(0 [pid 5118] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5117] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5116] <... exit_group resumed>) = ? [pid 5115] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5118] <... openat resumed>) = 6 [pid 5118] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5118] ioctl(6, LOOP_CLR_FD) = 0 [pid 5116] +++ exited with 0 +++ [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5116, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=15 /* 0.15 s */} --- [pid 5118] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5117] <... open resumed>) = 5 [pid 5117] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5118] close(6 [pid 5061] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5118] <... close resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5118] close(5 [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, child_tidptr=0x555556b26650) = 5121 ./strace-static-x86_64: Process 5121 attached [pid 5121] set_robust_list(0x555556b26660, 24) = 0 [pid 5121] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5117] <... pwritev resumed>) = 103 [pid 5117] exit_group(0) = ? [pid 5115] <... pwritev resumed>) = 103 [pid 5115] exit_group(0 [pid 5121] <... prctl resumed>) = 0 [pid 5121] setpgid(0, 0) = 0 [pid 5121] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5115] <... exit_group resumed>) = ? [pid 5115] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5115, si_uid=0, si_status=0, si_utime=0, si_stime=20 /* 0.20 s */} --- [pid 5121] <... openat resumed>) = 3 [pid 5118] <... close resumed>) = 0 [pid 5117] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5117, si_uid=0, si_status=0, si_utime=0, si_stime=18 /* 0.18 s */} --- [pid 5064] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5064] ioctl(3, LOOP_CLR_FD [pid 5121] write(3, "1000", 4 [pid 5064] <... ioctl resumed>) = 0 [pid 5121] <... write resumed>) = 4 [pid 5067] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5064] close(3 [pid 5121] close(3 [pid 5064] <... close resumed>) = 0 [pid 5121] <... close resumed>) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5121] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5067] <... openat resumed>) = 3 [pid 5067] ioctl(3, LOOP_CLR_FD [pid 5064] <... clone resumed>, child_tidptr=0x555556b26650) = 5122 [pid 5067] <... ioctl resumed>) = 0 [pid 5067] close(3./strace-static-x86_64: Process 5122 attached [pid 5121] <... openat resumed>) = 3 [pid 5118] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5067] <... close resumed>) = 0 [pid 5122] set_robust_list(0x555556b26660, 24 [pid 5121] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5118] <... open resumed>) = 5 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5122] <... set_robust_list resumed>) = 0 [pid 5121] sendfile(4, 3, [88]./strace-static-x86_64: Process 5123 attached [pid 5122] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5118] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5123] set_robust_list(0x555556b26660, 24 [pid 5122] <... prctl resumed>) = 0 [pid 5118] <... pwritev resumed>) = 103 [pid 5067] <... clone resumed>, child_tidptr=0x555556b26650) = 5123 [pid 5123] <... set_robust_list resumed>) = 0 [pid 5122] setpgid(0, 0 [pid 5118] exit_group(0 [pid 5122] <... setpgid resumed>) = 0 [pid 5118] <... exit_group resumed>) = ? [pid 5123] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5122] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5118] +++ exited with 0 +++ [pid 5123] setpgid(0, 0 [pid 5062] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5118, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} --- [pid 5123] <... setpgid resumed>) = 0 [pid 5123] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5122] <... openat resumed>) = 3 [pid 5123] <... openat resumed>) = 3 [pid 5122] write(3, "1000", 4 [pid 5123] write(3, "1000", 4 [pid 5062] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5122] <... write resumed>) = 4 [pid 5123] <... write resumed>) = 4 [ 80.698904][ T5119] syz-executor326 (5119): drop_caches: 1 [pid 5122] close(3 [pid 5123] close(3 [pid 5122] <... close resumed>) = 0 [pid 5062] <... openat resumed>) = 3 [pid 5123] <... close resumed>) = 0 [pid 5122] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5062] ioctl(3, LOOP_CLR_FD) = 0 [pid 5122] <... openat resumed>) = 3 [pid 5062] close(3) = 0 [pid 5123] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5122] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5124 attached [pid 5123] <... openat resumed>) = 3 [pid 5122] <... openat resumed>) = 4 [pid 5062] <... clone resumed>, child_tidptr=0x555556b26650) = 5124 [pid 5124] set_robust_list(0x555556b26660, 24 [pid 5123] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5122] sendfile(4, 3, [88] [pid 5124] <... set_robust_list resumed>) = 0 [pid 5124] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5123] <... openat resumed>) = 4 [pid 5124] <... prctl resumed>) = 0 [pid 5124] setpgid(0, 0) = 0 [pid 5124] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5123] sendfile(4, 3, [88] [pid 5124] <... openat resumed>) = 3 [pid 5124] write(3, "1000", 4) = 4 [pid 5124] close(3) = 0 [pid 5124] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5124] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5124] sendfile(4, 3, [88] [pid 5119] <... sendfile resumed> => [103], 15) = 15 [ 80.863918][ T5120] syz-executor326 (5120): drop_caches: 1 [ 80.892161][ T5119] syz-executor326 (5119): drop_caches: 1 [pid 5119] memfd_create("syzkaller", 0) = 5 [pid 5119] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 80.943636][ T5121] syz-executor326 (5121): drop_caches: 1 [pid 5119] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5119] munmap(0x7f87cd1f6000, 138412032) = 0 [pid 5120] <... sendfile resumed> => [103], 15) = 15 [ 81.051533][ T5123] syz-executor326 (5123): drop_caches: 1 [ 81.052897][ T5120] syz-executor326 (5120): drop_caches: 1 [ 81.065182][ T5122] syz-executor326 (5122): drop_caches: 1 [ 81.067117][ T5124] syz-executor326 (5124): drop_caches: 1 [pid 5120] memfd_create("syzkaller", 0 [pid 5119] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 6 [pid 5119] ioctl(6, LOOP_SET_FD, 5 [pid 5120] <... memfd_create resumed>) = 5 [pid 5120] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5119] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5119] ioctl(6, LOOP_CLR_FD) = 0 [pid 5119] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5119] close(6) = 0 [pid 5119] close(5) = 0 [pid 5119] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5120] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5119] <... open resumed>) = 5 [pid 5119] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5121] <... sendfile resumed> => [103], 15) = 15 [ 81.183658][ T5121] syz-executor326 (5121): drop_caches: 1 [pid 5121] memfd_create("syzkaller", 0) = 5 [pid 5121] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5119] <... pwritev resumed>) = 103 [pid 5119] exit_group(0 [pid 5121] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5124] <... sendfile resumed> => [103], 15) = 15 [pid 5120] <... write resumed>) = 2097152 [pid 5119] <... exit_group resumed>) = ? [pid 5124] memfd_create("syzkaller", 0 [pid 5119] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5119, si_uid=0, si_status=0, si_utime=0, si_stime=19 /* 0.19 s */} --- [pid 5070] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5070] ioctl(3, LOOP_CLR_FD) = 0 [ 81.225451][ T5124] syz-executor326 (5124): drop_caches: 1 [pid 5124] <... memfd_create resumed>) = 5 [pid 5070] close(3 [pid 5124] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5070] <... close resumed>) = 0 [pid 5124] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5125 attached [pid 5121] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5125] set_robust_list(0x555556b26660, 24 [pid 5122] <... sendfile resumed> => [103], 15) = 15 [pid 5120] munmap(0x7f87cd1f6000, 138412032 [pid 5070] <... clone resumed>, child_tidptr=0x555556b26650) = 5125 [pid 5125] <... set_robust_list resumed>) = 0 [pid 5125] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5125] setpgid(0, 0 [pid 5120] <... munmap resumed>) = 0 [pid 5125] <... setpgid resumed>) = 0 [pid 5120] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5125] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5120] <... openat resumed>) = 6 [pid 5125] <... openat resumed>) = 3 [pid 5120] ioctl(6, LOOP_SET_FD, 5 [pid 5125] write(3, "1000", 4 [pid 5120] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5125] <... write resumed>) = 4 [pid 5120] ioctl(6, LOOP_CLR_FD [pid 5125] close(3 [pid 5120] <... ioctl resumed>) = 0 [pid 5125] <... close resumed>) = 0 [pid 5125] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5120] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5120] close(6) = 0 [pid 5120] close(5 [pid 5122] memfd_create("syzkaller", 0 [pid 5125] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5122] <... memfd_create resumed>) = 5 [pid 5120] <... close resumed>) = 0 [pid 5125] <... openat resumed>) = 4 [pid 5125] sendfile(4, 3, [88] [pid 5122] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5123] <... sendfile resumed> => [103], 15) = 15 [pid 5123] memfd_create("syzkaller", 0 [ 81.291493][ T5122] syz-executor326 (5122): drop_caches: 1 [ 81.298298][ T5123] syz-executor326 (5123): drop_caches: 1 [pid 5120] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5123] <... memfd_create resumed>) = 5 [pid 5120] <... open resumed>) = 5 [pid 5124] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5123] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5120] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5123] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5121] <... write resumed>) = 2097152 [pid 5120] <... pwritev resumed>) = 103 [pid 5120] exit_group(0) = ? [pid 5121] munmap(0x7f87cd1f6000, 138412032 [pid 5120] +++ exited with 0 +++ [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5120, si_uid=0, si_status=0, si_utime=0, si_stime=14 /* 0.14 s */} --- [pid 5121] <... munmap resumed>) = 0 [pid 5060] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5121] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5060] <... openat resumed>) = 3 [pid 5060] ioctl(3, LOOP_CLR_FD) = 0 [pid 5060] close(3 [pid 5121] <... openat resumed>) = 6 [pid 5060] <... close resumed>) = 0 [pid 5121] ioctl(6, LOOP_SET_FD, 5 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5126 attached [pid 5122] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5121] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5126] set_robust_list(0x555556b26660, 24 [pid 5121] ioctl(6, LOOP_CLR_FD [pid 5060] <... clone resumed>, child_tidptr=0x555556b26650) = 5126 [pid 5126] <... set_robust_list resumed>) = 0 [pid 5121] <... ioctl resumed>) = 0 [pid 5126] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5121] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5121] close(6) = 0 [pid 5121] close(5 [pid 5126] setpgid(0, 0 [pid 5123] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5126] <... setpgid resumed>) = 0 [pid 5126] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5124] <... write resumed>) = 2097152 [pid 5126] <... openat resumed>) = 3 [pid 5124] munmap(0x7f87cd1f6000, 138412032 [pid 5121] <... close resumed>) = 0 [pid 5126] write(3, "1000", 4) = 4 [pid 5126] close(3 [pid 5121] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5126] <... close resumed>) = 0 [pid 5126] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5124] <... munmap resumed>) = 0 [pid 5122] <... write resumed>) = 2097152 [pid 5121] <... open resumed>) = 5 [pid 5126] <... openat resumed>) = 3 [pid 5122] munmap(0x7f87cd1f6000, 138412032 [pid 5121] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5126] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5124] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5122] <... munmap resumed>) = 0 [pid 5126] sendfile(4, 3, [88] [pid 5124] <... openat resumed>) = 6 [pid 5122] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5124] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5124] ioctl(6, LOOP_CLR_FD) = 0 [pid 5122] <... openat resumed>) = 6 [pid 5121] <... pwritev resumed>) = 103 [pid 5124] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5121] exit_group(0 [pid 5124] close(6 [pid 5122] ioctl(6, LOOP_SET_FD, 5 [pid 5121] <... exit_group resumed>) = ? [pid 5124] <... close resumed>) = 0 [pid 5124] close(5) = 0 [pid 5124] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5124] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5123] <... write resumed>) = 2097152 [pid 5123] munmap(0x7f87cd1f6000, 138412032 [pid 5124] <... pwritev resumed>) = 103 [pid 5122] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5121] +++ exited with 0 +++ [pid 5124] exit_group(0 [pid 5122] ioctl(6, LOOP_CLR_FD [pid 5124] <... exit_group resumed>) = ? [pid 5122] <... ioctl resumed>) = 0 [pid 5124] +++ exited with 0 +++ [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5121, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=23 /* 0.23 s */} --- [pid 5062] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5124, si_uid=0, si_status=0, si_utime=0, si_stime=15 /* 0.15 s */} --- [pid 5061] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 3 [pid 5122] ioctl(6, LOOP_SET_FD, 5 [pid 5062] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5122] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5122] close(6 [pid 5062] <... openat resumed>) = 3 [pid 5061] <... ioctl resumed>) = 0 [pid 5122] <... close resumed>) = 0 [pid 5062] ioctl(3, LOOP_CLR_FD [pid 5061] close(3 [pid 5123] <... munmap resumed>) = 0 [pid 5122] close(5 [pid 5062] <... ioctl resumed>) = 0 [pid 5061] <... close resumed>) = 0 [pid 5123] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 6 [pid 5123] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5123] ioctl(6, LOOP_CLR_FD) = 0 [pid 5123] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5123] close(6) = 0 [pid 5123] close(5 [pid 5062] close(3 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5062] <... close resumed>) = 0 ./strace-static-x86_64: Process 5127 attached [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5127] set_robust_list(0x555556b26660, 24 [pid 5122] <... close resumed>) = 0 [pid 5061] <... clone resumed>, child_tidptr=0x555556b26650) = 5127 [pid 5127] <... set_robust_list resumed>) = 0 [pid 5127] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5127] setpgid(0, 0./strace-static-x86_64: Process 5128 attached ) = 0 [pid 5122] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5062] <... clone resumed>, child_tidptr=0x555556b26650) = 5128 [pid 5128] set_robust_list(0x555556b26660, 24 [pid 5127] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5128] <... set_robust_list resumed>) = 0 [pid 5128] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5127] <... openat resumed>) = 3 [pid 5128] setpgid(0, 0 [pid 5122] <... open resumed>) = 5 [pid 5127] write(3, "1000", 4 [pid 5122] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5127] <... write resumed>) = 4 [pid 5128] <... setpgid resumed>) = 0 [pid 5127] close(3) = 0 [pid 5128] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5127] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5122] <... pwritev resumed>) = 103 [pid 5123] <... close resumed>) = 0 [pid 5128] <... openat resumed>) = 3 [pid 5127] <... openat resumed>) = 3 [pid 5122] exit_group(0 [pid 5123] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5128] write(3, "1000", 4 [pid 5127] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5122] <... exit_group resumed>) = ? [pid 5128] <... write resumed>) = 4 [pid 5128] close(3) = 0 [pid 5128] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5128] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5128] sendfile(4, 3, [88] [pid 5127] <... openat resumed>) = 4 [pid 5123] <... open resumed>) = 5 [pid 5122] +++ exited with 0 +++ [pid 5127] sendfile(4, 3, [88] [pid 5123] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5122, si_uid=0, si_status=0, si_utime=0, si_stime=18 /* 0.18 s */} --- [pid 5123] <... pwritev resumed>) = 103 [pid 5123] exit_group(0) = ? [pid 5064] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5064] ioctl(3, LOOP_CLR_FD) = 0 [pid 5123] +++ exited with 0 +++ [pid 5064] close(3 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5123, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=16 /* 0.16 s */} --- [pid 5064] <... close resumed>) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5067] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5064] <... clone resumed>, child_tidptr=0x555556b26650) = 5129 [pid 5067] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5129 attached [ 81.569950][ T5125] syz-executor326 (5125): drop_caches: 1 [pid 5067] ioctl(3, LOOP_CLR_FD [pid 5129] set_robust_list(0x555556b26660, 24 [pid 5067] <... ioctl resumed>) = 0 [pid 5129] <... set_robust_list resumed>) = 0 [pid 5067] close(3) = 0 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556b26650) = 5130 [pid 5129] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5129] setpgid(0, 0) = 0 ./strace-static-x86_64: Process 5130 attached [pid 5130] set_robust_list(0x555556b26660, 24 [pid 5129] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5130] <... set_robust_list resumed>) = 0 [pid 5129] <... openat resumed>) = 3 [pid 5129] write(3, "1000", 4) = 4 [pid 5130] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5129] close(3 [pid 5130] <... prctl resumed>) = 0 [pid 5129] <... close resumed>) = 0 [pid 5130] setpgid(0, 0) = 0 [pid 5129] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5130] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5129] <... openat resumed>) = 3 [pid 5130] <... openat resumed>) = 3 [pid 5129] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5130] write(3, "1000", 4) = 4 [pid 5129] <... openat resumed>) = 4 [pid 5130] close(3) = 0 [pid 5130] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5129] sendfile(4, 3, [88] [pid 5130] <... openat resumed>) = 3 [pid 5130] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 81.745852][ T5126] syz-executor326 (5126): drop_caches: 1 [pid 5130] sendfile(4, 3, [88] [pid 5125] <... sendfile resumed> => [103], 15) = 15 [ 81.801183][ T5125] syz-executor326 (5125): drop_caches: 1 [ 81.833987][ T5128] syz-executor326 (5128): drop_caches: 1 [pid 5125] memfd_create("syzkaller", 0) = 5 [pid 5125] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 81.858061][ T5127] syz-executor326 (5127): drop_caches: 1 [ 81.880568][ T5129] syz-executor326 (5129): drop_caches: 1 [ 81.971174][ T5130] syz-executor326 (5130): drop_caches: 1 [pid 5125] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5125] munmap(0x7f87cd1f6000, 138412032) = 0 [pid 5125] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 6 [pid 5125] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5125] ioctl(6, LOOP_CLR_FD) = 0 [pid 5125] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5125] close(6) = 0 [pid 5125] close(5) = 0 [pid 5125] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [ 82.037305][ T5126] syz-executor326 (5126): drop_caches: 1 [pid 5125] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5128] <... sendfile resumed> => [103], 15) = 15 [pid 5126] <... sendfile resumed> => [103], 15) = 15 [pid 5126] memfd_create("syzkaller", 0) = 5 [pid 5125] <... pwritev resumed>) = 103 [pid 5125] exit_group(0) = ? [pid 5125] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5125, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=23 /* 0.23 s */} --- [pid 5070] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5070] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5070] ioctl(3, LOOP_CLR_FD) = 0 [pid 5070] close(3) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5131 attached [pid 5126] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5131] set_robust_list(0x555556b26660, 24 [pid 5070] <... clone resumed>, child_tidptr=0x555556b26650) = 5131 [pid 5131] <... set_robust_list resumed>) = 0 [pid 5126] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5131] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5131] setpgid(0, 0) = 0 [pid 5131] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5131] write(3, "1000", 4) = 4 [pid 5131] close(3) = 0 [pid 5131] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5131] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5131] sendfile(4, 3, [88] [pid 5128] memfd_create("syzkaller", 0 [pid 5129] <... sendfile resumed> => [103], 15) = 15 [pid 5128] <... memfd_create resumed>) = 5 [pid 5129] memfd_create("syzkaller", 0 [pid 5126] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5128] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 82.102269][ T5128] syz-executor326 (5128): drop_caches: 1 [ 82.122061][ T5129] syz-executor326 (5129): drop_caches: 1 [pid 5127] <... sendfile resumed> => [103], 15) = 15 [pid 5129] <... memfd_create resumed>) = 5 [pid 5129] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5127] memfd_create("syzkaller", 0) = 5 [pid 5129] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5127] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 82.182023][ T5127] syz-executor326 (5127): drop_caches: 1 [pid 5128] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5127] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5126] <... write resumed>) = 2097152 [pid 5126] munmap(0x7f87cd1f6000, 138412032 [pid 5130] <... sendfile resumed> => [103], 15) = 15 [pid 5130] memfd_create("syzkaller", 0) = 5 [pid 5129] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5126] <... munmap resumed>) = 0 [pid 5130] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5126] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5126] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5126] ioctl(6, LOOP_CLR_FD) = 0 [pid 5126] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5126] close(6) = 0 [ 82.234220][ T5130] syz-executor326 (5130): drop_caches: 1 [pid 5126] close(5 [pid 5128] <... write resumed>) = 2097152 [pid 5128] munmap(0x7f87cd1f6000, 138412032) = 0 [pid 5127] <... write resumed>) = 2097152 [pid 5127] munmap(0x7f87cd1f6000, 138412032 [pid 5128] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 6 [pid 5128] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5128] ioctl(6, LOOP_CLR_FD) = 0 [pid 5127] <... munmap resumed>) = 0 [pid 5128] ioctl(6, LOOP_SET_FD, 5 [pid 5127] openat(AT_FDCWD, "/dev/loop1", O_RDWR) = 6 [pid 5127] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5127] ioctl(6, LOOP_CLR_FD) = 0 [pid 5129] <... write resumed>) = 2097152 [pid 5128] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5126] <... close resumed>) = 0 [pid 5128] close(6 [pid 5127] ioctl(6, LOOP_SET_FD, 5 [pid 5128] <... close resumed>) = 0 [pid 5127] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5128] close(5 [pid 5127] close(6) = 0 [pid 5127] close(5 [pid 5130] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5129] munmap(0x7f87cd1f6000, 138412032 [pid 5126] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5129] <... munmap resumed>) = 0 [pid 5126] <... open resumed>) = 5 [ 82.316444][ T5131] syz-executor326 (5131): drop_caches: 1 [pid 5126] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5129] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5128] <... close resumed>) = 0 [pid 5126] <... pwritev resumed>) = 103 [pid 5129] <... openat resumed>) = 6 [pid 5126] exit_group(0 [pid 5129] ioctl(6, LOOP_SET_FD, 5 [pid 5126] <... exit_group resumed>) = ? [pid 5130] <... write resumed>) = 2097152 [pid 5129] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5126] +++ exited with 0 +++ [pid 5130] munmap(0x7f87cd1f6000, 138412032 [pid 5129] ioctl(6, LOOP_CLR_FD) = 0 [pid 5130] <... munmap resumed>) = 0 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5126, si_uid=0, si_status=0, si_utime=0, si_stime=22 /* 0.22 s */} --- [pid 5060] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [pid 5127] <... close resumed>) = 0 [pid 5129] ioctl(6, LOOP_SET_FD, 5 [pid 5128] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5130] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5129] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5128] <... open resumed>) = 5 [pid 5130] <... openat resumed>) = 6 [pid 5129] close(6 [pid 5128] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5060] <... ioctl resumed>) = 0 [pid 5130] ioctl(6, LOOP_SET_FD, 5 [pid 5129] <... close resumed>) = 0 [pid 5129] close(5 [pid 5060] close(3 [pid 5130] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5127] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5127] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5130] ioctl(6, LOOP_CLR_FD [pid 5060] <... close resumed>) = 0 [pid 5130] <... ioctl resumed>) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556b26650) = 5132 [pid 5130] ioctl(6, LOOP_SET_FD, 5 [pid 5128] <... pwritev resumed>) = 103 [pid 5127] <... pwritev resumed>) = 103 [pid 5128] exit_group(0 [pid 5127] exit_group(0 [pid 5128] <... exit_group resumed>) = ? [pid 5127] <... exit_group resumed>) = ? [pid 5128] +++ exited with 0 +++ ./strace-static-x86_64: Process 5132 attached [pid 5130] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5129] <... close resumed>) = 0 [pid 5062] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5128, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} --- [pid 5132] set_robust_list(0x555556b26660, 24) = 0 [pid 5130] close(6 [pid 5129] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5132] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5130] <... close resumed>) = 0 [pid 5129] <... open resumed>) = 5 [pid 5130] close(5 [pid 5129] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5127] +++ exited with 0 +++ [pid 5062] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5132] <... prctl resumed>) = 0 [pid 5062] <... openat resumed>) = 3 [pid 5132] setpgid(0, 0 [pid 5062] ioctl(3, LOOP_CLR_FD [pid 5132] <... setpgid resumed>) = 0 [pid 5062] <... ioctl resumed>) = 0 [pid 5062] close(3) = 0 [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5133 attached [pid 5133] set_robust_list(0x555556b26660, 24) = 0 [pid 5133] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5133] setpgid(0, 0) = 0 [pid 5132] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5133] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5132] <... openat resumed>) = 3 [pid 5133] <... openat resumed>) = 3 [pid 5132] write(3, "1000", 4 [pid 5062] <... clone resumed>, child_tidptr=0x555556b26650) = 5133 [pid 5133] write(3, "1000", 4 [pid 5132] <... write resumed>) = 4 [pid 5133] <... write resumed>) = 4 [pid 5133] close(3) = 0 [pid 5133] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5132] close(3 [pid 5133] <... openat resumed>) = 3 [pid 5132] <... close resumed>) = 0 [pid 5133] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5132] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5133] <... openat resumed>) = 4 [pid 5132] <... openat resumed>) = 3 [pid 5133] sendfile(4, 3, [88] [pid 5132] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5130] <... close resumed>) = 0 [pid 5129] <... pwritev resumed>) = 103 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5127, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 s */} --- [pid 5132] sendfile(4, 3, [88] [pid 5129] exit_group(0 [pid 5061] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5129] <... exit_group resumed>) = ? [pid 5061] <... openat resumed>) = 3 [pid 5129] +++ exited with 0 +++ [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5129, si_uid=0, si_status=0, si_utime=0, si_stime=20 /* 0.20 s */} --- [pid 5061] <... ioctl resumed>) = 0 [pid 5061] close(3) = 0 [pid 5130] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5064] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5064] ioctl(3, LOOP_CLR_FD [pid 5130] <... open resumed>) = 5 [pid 5064] <... ioctl resumed>) = 0 [pid 5064] close(3 [pid 5061] <... clone resumed>, child_tidptr=0x555556b26650) = 5134 [pid 5130] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5064] <... close resumed>) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5134 attached [pid 5134] set_robust_list(0x555556b26660, 24 [pid 5130] <... pwritev resumed>) = 103 ./strace-static-x86_64: Process 5135 attached [pid 5135] set_robust_list(0x555556b26660, 24) = 0 [pid 5135] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5135] setpgid(0, 0) = 0 [pid 5135] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5135] write(3, "1000", 4) = 4 [pid 5135] close(3) = 0 [pid 5135] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5064] <... clone resumed>, child_tidptr=0x555556b26650) = 5135 [pid 5135] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5134] <... set_robust_list resumed>) = 0 [pid 5130] exit_group(0 [pid 5135] <... openat resumed>) = 4 [pid 5130] <... exit_group resumed>) = ? [pid 5134] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5135] sendfile(4, 3, [88] [pid 5130] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5130, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- [pid 5134] <... prctl resumed>) = 0 [pid 5134] setpgid(0, 0) = 0 [pid 5134] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5067] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5067] ioctl(3, LOOP_CLR_FD) = 0 [pid 5067] close(3) = 0 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556b26650) = 5136 ./strace-static-x86_64: Process 5136 attached [pid 5134] <... openat resumed>) = 3 [pid 5136] set_robust_list(0x555556b26660, 24) = 0 [pid 5134] write(3, "1000", 4) = 4 [pid 5136] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5134] close(3 [pid 5136] <... prctl resumed>) = 0 [pid 5134] <... close resumed>) = 0 [pid 5134] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5136] setpgid(0, 0) = 0 [pid 5136] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5134] <... openat resumed>) = 3 [pid 5136] <... openat resumed>) = 3 [pid 5136] write(3, "1000", 4) = 4 [pid 5136] close(3 [pid 5134] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5136] <... close resumed>) = 0 [pid 5134] <... openat resumed>) = 4 [pid 5136] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5134] sendfile(4, 3, [88] [pid 5136] <... openat resumed>) = 3 [pid 5136] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5131] <... sendfile resumed> => [103], 15) = 15 [pid 5136] <... openat resumed>) = 4 [pid 5131] memfd_create("syzkaller", 0 [pid 5136] sendfile(4, 3, [88] [pid 5131] <... memfd_create resumed>) = 5 [ 82.605361][ T5131] syz-executor326 (5131): drop_caches: 1 [pid 5131] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 82.668036][ T5133] syz-executor326 (5133): drop_caches: 1 [ 82.687386][ T5132] syz-executor326 (5132): drop_caches: 1 [pid 5131] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 [ 82.728470][ T5135] syz-executor326 (5135): drop_caches: 1 [pid 5131] munmap(0x7f87cd1f6000, 138412032) = 0 [pid 5131] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 6 [pid 5131] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5131] ioctl(6, LOOP_CLR_FD) = 0 [pid 5131] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5131] close(6) = 0 [pid 5131] close(5) = 0 [pid 5131] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5131] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452) = 103 [pid 5131] exit_group(0) = ? [ 82.780067][ T5134] syz-executor326 (5134): drop_caches: 1 [pid 5131] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5131, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=18 /* 0.18 s */} --- [pid 5070] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5070] ioctl(3, LOOP_CLR_FD) = 0 [pid 5070] close(3) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5137 attached , child_tidptr=0x555556b26650) = 5137 [pid 5137] set_robust_list(0x555556b26660, 24) = 0 [pid 5137] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [ 82.861742][ T5136] syz-executor326 (5136): drop_caches: 1 [pid 5137] setpgid(0, 0) = 0 [pid 5137] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5137] write(3, "1000", 4 [pid 5133] <... sendfile resumed> => [103], 15) = 15 [pid 5137] <... write resumed>) = 4 [pid 5137] close(3) = 0 [pid 5137] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5137] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5137] sendfile(4, 3, [88] [pid 5132] <... sendfile resumed> => [103], 15) = 15 [ 82.905464][ T5132] syz-executor326 (5132): drop_caches: 1 [ 82.912589][ T5133] syz-executor326 (5133): drop_caches: 1 [pid 5132] memfd_create("syzkaller", 0 [pid 5133] memfd_create("syzkaller", 0) = 5 [pid 5133] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5132] <... memfd_create resumed>) = 5 [pid 5132] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5135] <... sendfile resumed> => [103], 15) = 15 [pid 5135] memfd_create("syzkaller", 0) = 5 [pid 5135] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 82.947403][ T5135] syz-executor326 (5135): drop_caches: 1 [pid 5133] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5134] <... sendfile resumed> => [103], 15) = 15 [pid 5132] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5134] memfd_create("syzkaller", 0) = 5 [pid 5134] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5135] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5134] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5132] <... write resumed>) = 2097152 [pid 5132] munmap(0x7f87cd1f6000, 138412032) = 0 [ 83.011511][ T5134] syz-executor326 (5134): drop_caches: 1 [pid 5132] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5132] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5132] ioctl(6, LOOP_CLR_FD [pid 5133] <... write resumed>) = 2097152 [pid 5133] munmap(0x7f87cd1f6000, 138412032 [pid 5132] <... ioctl resumed>) = 0 [pid 5136] <... sendfile resumed> => [103], 15) = 15 [pid 5135] <... write resumed>) = 2097152 [pid 5134] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5133] <... munmap resumed>) = 0 [pid 5136] memfd_create("syzkaller", 0 [pid 5135] munmap(0x7f87cd1f6000, 138412032 [ 83.071299][ T5136] syz-executor326 (5136): drop_caches: 1 [pid 5132] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5132] close(6 [pid 5133] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 6 [pid 5133] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5133] ioctl(6, LOOP_CLR_FD) = 0 [pid 5136] <... memfd_create resumed>) = 5 [pid 5132] <... close resumed>) = 0 [pid 5132] close(5 [pid 5136] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5133] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5133] close(6) = 0 [pid 5135] <... munmap resumed>) = 0 [pid 5133] close(5 [pid 5135] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5132] <... close resumed>) = 0 [pid 5135] <... openat resumed>) = 6 [pid 5135] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5135] ioctl(6, LOOP_CLR_FD) = 0 [pid 5134] <... write resumed>) = 2097152 [pid 5132] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5134] munmap(0x7f87cd1f6000, 138412032) = 0 [pid 5133] <... close resumed>) = 0 [pid 5132] <... open resumed>) = 5 [pid 5135] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5135] close(6) = 0 [pid 5133] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5135] close(5 [pid 5133] <... open resumed>) = 5 [ 83.112408][ T5137] syz-executor326 (5137): drop_caches: 1 [pid 5133] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5136] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5135] <... close resumed>) = 0 [pid 5134] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5133] <... pwritev resumed>) = 103 [pid 5132] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5133] exit_group(0) = ? [pid 5134] <... openat resumed>) = 6 [pid 5133] +++ exited with 0 +++ [pid 5062] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5133, si_uid=0, si_status=0, si_utime=0, si_stime=17 /* 0.17 s */} --- [pid 5062] restart_syscall(<... resuming interrupted clone ...> [pid 5134] ioctl(6, LOOP_SET_FD, 5 [pid 5132] <... pwritev resumed>) = 103 [pid 5062] <... restart_syscall resumed>) = 0 [pid 5134] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5132] exit_group(0 [pid 5062] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5134] ioctl(6, LOOP_CLR_FD [pid 5132] <... exit_group resumed>) = ? [pid 5062] ioctl(3, LOOP_CLR_FD) = 0 [pid 5136] <... write resumed>) = 2097152 [pid 5134] <... ioctl resumed>) = 0 [pid 5132] +++ exited with 0 +++ [pid 5062] close(3) = 0 [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5132, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=20 /* 0.20 s */} --- [pid 5135] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5135] <... open resumed>) = 5 [pid 5062] <... clone resumed>, child_tidptr=0x555556b26650) = 5138 [pid 5060] openat(AT_FDCWD, "/dev/loop0", O_RDWR./strace-static-x86_64: Process 5138 attached ) = 3 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5138] set_robust_list(0x555556b26660, 24 [pid 5136] munmap(0x7f87cd1f6000, 138412032 [pid 5135] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5060] <... ioctl resumed>) = 0 [pid 5138] <... set_robust_list resumed>) = 0 [pid 5060] close(3 [pid 5138] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5134] ioctl(6, LOOP_SET_FD, 5 [pid 5138] <... prctl resumed>) = 0 [pid 5134] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] <... close resumed>) = 0 [pid 5138] setpgid(0, 0 [pid 5134] close(6 [pid 5138] <... setpgid resumed>) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5138] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5134] <... close resumed>) = 0 [pid 5138] <... openat resumed>) = 3 [pid 5138] write(3, "1000", 4) = 4 [pid 5134] close(5./strace-static-x86_64: Process 5139 attached [pid 5138] close(3) = 0 [pid 5138] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5138] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5139] set_robust_list(0x555556b26660, 24 [pid 5138] <... openat resumed>) = 4 [pid 5138] sendfile(4, 3, [88] [pid 5139] <... set_robust_list resumed>) = 0 [pid 5135] <... pwritev resumed>) = 103 [pid 5134] <... close resumed>) = 0 [pid 5139] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5135] exit_group(0) = ? [pid 5139] <... prctl resumed>) = 0 [pid 5135] +++ exited with 0 +++ [pid 5139] setpgid(0, 0 [pid 5136] <... munmap resumed>) = 0 [pid 5134] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5135, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=17 /* 0.17 s */} --- [pid 5060] <... clone resumed>, child_tidptr=0x555556b26650) = 5139 [pid 5139] <... setpgid resumed>) = 0 [pid 5136] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 6 [pid 5139] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5136] ioctl(6, LOOP_SET_FD, 5 [pid 5139] <... openat resumed>) = 3 [pid 5136] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5139] write(3, "1000", 4 [pid 5136] ioctl(6, LOOP_CLR_FD [pid 5064] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5139] <... write resumed>) = 4 [pid 5136] <... ioctl resumed>) = 0 [pid 5134] <... open resumed>) = 5 [pid 5064] <... openat resumed>) = 3 [pid 5139] close(3) = 0 [pid 5134] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5064] ioctl(3, LOOP_CLR_FD) = 0 [pid 5139] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5064] close(3) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5139] <... openat resumed>) = 3 [pid 5139] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5136] ioctl(6, LOOP_SET_FD, 5./strace-static-x86_64: Process 5140 attached ) = -1 EBUSY (Device or resource busy) [pid 5064] <... clone resumed>, child_tidptr=0x555556b26650) = 5140 [pid 5136] close(6 [pid 5139] <... openat resumed>) = 4 [pid 5140] set_robust_list(0x555556b26660, 24 [pid 5139] sendfile(4, 3, [88] [pid 5136] <... close resumed>) = 0 [pid 5140] <... set_robust_list resumed>) = 0 [pid 5140] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5136] close(5 [pid 5140] <... prctl resumed>) = 0 [pid 5140] setpgid(0, 0 [pid 5134] <... pwritev resumed>) = 103 [pid 5140] <... setpgid resumed>) = 0 [pid 5134] exit_group(0) = ? [pid 5140] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5134] +++ exited with 0 +++ [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5134, si_uid=0, si_status=0, si_utime=0, si_stime=18 /* 0.18 s */} --- [pid 5140] <... openat resumed>) = 3 [pid 5061] restart_syscall(<... resuming interrupted clone ...> [pid 5140] write(3, "1000", 4 [pid 5061] <... restart_syscall resumed>) = 0 [pid 5140] <... write resumed>) = 4 [pid 5140] close(3 [pid 5061] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5140] <... close resumed>) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5140] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5136] <... close resumed>) = 0 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5140] <... openat resumed>) = 3 [pid 5136] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5140] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5136] <... open resumed>) = 5 [pid 5061] <... ioctl resumed>) = 0 [pid 5140] sendfile(4, 3, [88] [pid 5136] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5061] close(3) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5141 attached [pid 5136] <... pwritev resumed>) = 103 [pid 5136] exit_group(0) = ? [pid 5141] set_robust_list(0x555556b26660, 24 [pid 5136] +++ exited with 0 +++ [pid 5061] <... clone resumed>, child_tidptr=0x555556b26650) = 5141 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5136, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} --- [pid 5141] <... set_robust_list resumed>) = 0 [pid 5141] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5067] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5141] setpgid(0, 0) = 0 [pid 5067] <... openat resumed>) = 3 [pid 5141] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5067] ioctl(3, LOOP_CLR_FD) = 0 [pid 5141] <... openat resumed>) = 3 [pid 5067] close(3) = 0 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5142 attached [pid 5141] write(3, "1000", 4 [pid 5142] set_robust_list(0x555556b26660, 24 [pid 5141] <... write resumed>) = 4 [pid 5141] close(3 [pid 5142] <... set_robust_list resumed>) = 0 [pid 5142] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5141] <... close resumed>) = 0 [pid 5142] <... prctl resumed>) = 0 [pid 5141] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5067] <... clone resumed>, child_tidptr=0x555556b26650) = 5142 [pid 5142] setpgid(0, 0 [pid 5141] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5142] <... setpgid resumed>) = 0 [pid 5141] <... openat resumed>) = 4 [pid 5142] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5141] sendfile(4, 3, [88] [pid 5142] <... openat resumed>) = 3 [pid 5142] write(3, "1000", 4) = 4 [pid 5142] close(3) = 0 [pid 5142] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5142] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5142] sendfile(4, 3, [88] [pid 5137] <... sendfile resumed> => [103], 15) = 15 [pid 5137] memfd_create("syzkaller", 0) = 5 [pid 5137] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 83.471958][ T5137] syz-executor326 (5137): drop_caches: 1 [ 83.476658][ T5139] syz-executor326 (5139): drop_caches: 1 [ 83.517079][ T5138] syz-executor326 (5138): drop_caches: 1 [ 83.548505][ T5140] syz-executor326 (5140): drop_caches: 1 [pid 5137] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5137] munmap(0x7f87cd1f6000, 138412032) = 0 [pid 5137] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 6 [pid 5137] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5137] ioctl(6, LOOP_CLR_FD) = 0 [pid 5137] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5137] close(6) = 0 [pid 5137] close(5) = 0 [pid 5137] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [ 83.640772][ T5141] syz-executor326 (5141): drop_caches: 1 [ 83.651007][ T5142] syz-executor326 (5142): drop_caches: 1 [pid 5137] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452) = 103 [pid 5137] exit_group(0) = ? [pid 5137] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5137, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} --- [pid 5070] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5070] ioctl(3, LOOP_CLR_FD) = 0 [pid 5070] close(3 [pid 5139] <... sendfile resumed> => [103], 15) = 15 [pid 5070] <... close resumed>) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5143 attached , child_tidptr=0x555556b26650) = 5143 [pid 5143] set_robust_list(0x555556b26660, 24) = 0 [pid 5143] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5139] memfd_create("syzkaller", 0 [pid 5143] setpgid(0, 0) = 0 [pid 5139] <... memfd_create resumed>) = 5 [pid 5143] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5139] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5143] write(3, "1000", 4 [pid 5139] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5143] <... write resumed>) = 4 [pid 5143] close(3) = 0 [pid 5143] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5143] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 83.732960][ T5139] syz-executor326 (5139): drop_caches: 1 [ 83.757347][ T5138] syz-executor326 (5138): drop_caches: 1 [pid 5143] sendfile(4, 3, [88] [pid 5138] <... sendfile resumed> => [103], 15) = 15 [pid 5138] memfd_create("syzkaller", 0) = 5 [pid 5138] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5140] <... sendfile resumed> => [103], 15) = 15 [ 83.788990][ T5140] syz-executor326 (5140): drop_caches: 1 [pid 5140] memfd_create("syzkaller", 0) = 5 [pid 5140] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5139] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5138] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5140] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5141] <... sendfile resumed> => [103], 15) = 15 [ 83.867301][ T5141] syz-executor326 (5141): drop_caches: 1 [pid 5141] memfd_create("syzkaller", 0) = 5 [pid 5139] <... write resumed>) = 2097152 [pid 5139] munmap(0x7f87cd1f6000, 138412032) = 0 [pid 5141] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5139] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5141] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5139] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5139] ioctl(6, LOOP_CLR_FD) = 0 [pid 5138] <... write resumed>) = 2097152 [pid 5139] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5139] close(6 [pid 5138] munmap(0x7f87cd1f6000, 138412032 [pid 5139] <... close resumed>) = 0 [pid 5139] close(5 [pid 5142] <... sendfile resumed> => [103], 15) = 15 [pid 5138] <... munmap resumed>) = 0 [pid 5140] <... write resumed>) = 2097152 [pid 5138] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5142] memfd_create("syzkaller", 0 [pid 5138] <... openat resumed>) = 6 [pid 5140] munmap(0x7f87cd1f6000, 138412032 [pid 5138] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5142] <... memfd_create resumed>) = 5 [pid 5138] ioctl(6, LOOP_CLR_FD) = 0 [pid 5142] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5138] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5138] close(6) = 0 [ 83.943680][ T5142] syz-executor326 (5142): drop_caches: 1 [pid 5138] close(5 [pid 5140] <... munmap resumed>) = 0 [pid 5140] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5141] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5140] <... openat resumed>) = 6 [pid 5139] <... close resumed>) = 0 [pid 5140] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5140] ioctl(6, LOOP_CLR_FD) = 0 [pid 5138] <... close resumed>) = 0 [pid 5139] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5140] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5140] close(6) = 0 [pid 5140] close(5 [pid 5139] <... open resumed>) = 5 [ 83.984906][ T5143] syz-executor326 (5143): drop_caches: 1 [pid 5139] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5138] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5138] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5142] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5140] <... close resumed>) = 0 [pid 5139] <... pwritev resumed>) = 103 [pid 5141] <... write resumed>) = 2097152 [pid 5139] exit_group(0 [pid 5141] munmap(0x7f87cd1f6000, 138412032 [pid 5140] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5139] <... exit_group resumed>) = ? [pid 5141] <... munmap resumed>) = 0 [pid 5140] <... open resumed>) = 5 [pid 5139] +++ exited with 0 +++ [pid 5138] <... pwritev resumed>) = 103 [pid 5141] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5140] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5138] exit_group(0) = ? [pid 5141] <... openat resumed>) = 6 [pid 5138] +++ exited with 0 +++ [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5139, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=14 /* 0.14 s */} --- [pid 5062] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5138, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=17 /* 0.17 s */} --- [pid 5060] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5141] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5060] <... openat resumed>) = 3 [pid 5141] ioctl(6, LOOP_CLR_FD [pid 5062] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5141] <... ioctl resumed>) = 0 [pid 5140] <... pwritev resumed>) = 103 [pid 5062] <... openat resumed>) = 3 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5062] ioctl(3, LOOP_CLR_FD [pid 5140] exit_group(0 [pid 5060] <... ioctl resumed>) = 0 [pid 5140] <... exit_group resumed>) = ? [pid 5062] <... ioctl resumed>) = 0 [pid 5060] close(3 [pid 5062] close(3) = 0 [pid 5060] <... close resumed>) = 0 [pid 5141] ioctl(6, LOOP_SET_FD, 5 [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5141] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5140] +++ exited with 0 +++ [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5144 attached [pid 5142] <... write resumed>) = 2097152 [pid 5141] close(6 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5140, si_uid=0, si_status=0, si_utime=0, si_stime=18 /* 0.18 s */} --- [pid 5062] <... clone resumed>, child_tidptr=0x555556b26650) = 5144 ./strace-static-x86_64: Process 5145 attached [pid 5141] <... close resumed>) = 0 [pid 5145] set_robust_list(0x555556b26660, 24 [pid 5141] close(5 [pid 5064] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5064] ioctl(3, LOOP_CLR_FD) = 0 [pid 5064] close(3) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] <... clone resumed>, child_tidptr=0x555556b26650) = 5145 ./strace-static-x86_64: Process 5146 attached [pid 5145] <... set_robust_list resumed>) = 0 [pid 5146] set_robust_list(0x555556b26660, 24 [pid 5144] set_robust_list(0x555556b26660, 24 [pid 5146] <... set_robust_list resumed>) = 0 [pid 5145] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5144] <... set_robust_list resumed>) = 0 [pid 5142] munmap(0x7f87cd1f6000, 138412032 [pid 5064] <... clone resumed>, child_tidptr=0x555556b26650) = 5146 [pid 5146] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5145] <... prctl resumed>) = 0 [pid 5144] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5142] <... munmap resumed>) = 0 [pid 5146] <... prctl resumed>) = 0 [pid 5144] <... prctl resumed>) = 0 [pid 5145] setpgid(0, 0 [pid 5146] setpgid(0, 0 [pid 5145] <... setpgid resumed>) = 0 [pid 5144] setpgid(0, 0 [pid 5146] <... setpgid resumed>) = 0 [pid 5145] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5144] <... setpgid resumed>) = 0 [pid 5146] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5145] <... openat resumed>) = 3 [pid 5144] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5146] <... openat resumed>) = 3 [pid 5145] write(3, "1000", 4 [pid 5144] <... openat resumed>) = 3 [pid 5146] write(3, "1000", 4 [pid 5145] <... write resumed>) = 4 [pid 5144] write(3, "1000", 4 [pid 5146] <... write resumed>) = 4 [pid 5145] close(3 [pid 5144] <... write resumed>) = 4 [pid 5146] close(3 [pid 5145] <... close resumed>) = 0 [pid 5144] close(3 [pid 5142] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5146] <... close resumed>) = 0 [pid 5145] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5144] <... close resumed>) = 0 [pid 5142] <... openat resumed>) = 6 [pid 5146] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5144] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5146] <... openat resumed>) = 3 [pid 5145] <... openat resumed>) = 3 [pid 5144] <... openat resumed>) = 3 [pid 5142] ioctl(6, LOOP_SET_FD, 5 [pid 5141] <... close resumed>) = 0 [pid 5146] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5145] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5141] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5146] <... openat resumed>) = 4 [pid 5145] <... openat resumed>) = 4 [pid 5141] <... open resumed>) = 5 [pid 5146] sendfile(4, 3, [88] [pid 5145] sendfile(4, 3, [88] [pid 5141] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5144] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5142] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5141] <... pwritev resumed>) = 103 [pid 5142] ioctl(6, LOOP_CLR_FD) = 0 [pid 5141] exit_group(0) = ? [pid 5144] <... openat resumed>) = 4 [pid 5141] +++ exited with 0 +++ [pid 5144] sendfile(4, 3, [88] [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5141, si_uid=0, si_status=0, si_utime=0, si_stime=18 /* 0.18 s */} --- [pid 5142] ioctl(6, LOOP_SET_FD, 5 [pid 5061] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5142] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5061] <... openat resumed>) = 3 [pid 5142] close(6 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5142] <... close resumed>) = 0 [pid 5061] <... ioctl resumed>) = 0 [pid 5142] close(5 [pid 5061] close(3 [pid 5143] <... sendfile resumed> => [103], 15) = 15 [pid 5061] <... close resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5143] memfd_create("syzkaller", 0) = 5 [pid 5143] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0./strace-static-x86_64: Process 5147 attached [pid 5061] <... clone resumed>, child_tidptr=0x555556b26650) = 5147 [pid 5147] set_robust_list(0x555556b26660, 24) = 0 [pid 5143] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5147] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5142] <... close resumed>) = 0 [pid 5147] setpgid(0, 0) = 0 [ 84.179934][ T5143] syz-executor326 (5143): drop_caches: 1 [pid 5147] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5147] write(3, "1000", 4) = 4 [pid 5147] close(3) = 0 [pid 5147] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5147] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5147] sendfile(4, 3, [88] [pid 5142] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5142] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452) = 103 [pid 5142] exit_group(0) = ? [pid 5142] +++ exited with 0 +++ [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5142, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=21 /* 0.21 s */} --- [pid 5067] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5143] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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] <... openat resumed>) = 3 [pid 5067] ioctl(3, LOOP_CLR_FD) = 0 [pid 5067] close(3) = 0 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5148 attached [pid 5148] set_robust_list(0x555556b26660, 24) = 0 [pid 5148] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5148] setpgid(0, 0) = 0 [pid 5067] <... clone resumed>, child_tidptr=0x555556b26650) = 5148 [pid 5148] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5148] write(3, "1000", 4) = 4 [pid 5148] close(3 [pid 5143] <... write resumed>) = 2097152 [pid 5148] <... close resumed>) = 0 [pid 5148] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5148] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5143] munmap(0x7f87cd1f6000, 138412032 [pid 5148] sendfile(4, 3, [88] [pid 5143] <... munmap resumed>) = 0 [pid 5143] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 6 [pid 5143] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5143] ioctl(6, LOOP_CLR_FD) = 0 [pid 5143] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5143] close(6) = 0 [pid 5143] close(5) = 0 [ 84.407869][ T5145] syz-executor326 (5145): drop_caches: 1 [ 84.423961][ T5146] syz-executor326 (5146): drop_caches: 1 [ 84.427967][ T5144] syz-executor326 (5144): drop_caches: 1 [pid 5143] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5143] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452) = 103 [pid 5143] exit_group(0) = ? [pid 5143] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5143, si_uid=0, si_status=0, si_utime=0, si_stime=18 /* 0.18 s */} --- [pid 5070] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5070] ioctl(3, LOOP_CLR_FD) = 0 [pid 5070] close(3) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556b26650) = 5149 ./strace-static-x86_64: Process 5149 attached [ 84.471047][ T5147] syz-executor326 (5147): drop_caches: 1 [pid 5149] set_robust_list(0x555556b26660, 24) = 0 [pid 5149] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5149] setpgid(0, 0) = 0 [pid 5149] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5149] write(3, "1000", 4) = 4 [pid 5149] close(3) = 0 [pid 5149] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [ 84.558812][ T5148] syz-executor326 (5148): drop_caches: 1 [ 84.597121][ T5146] syz-executor326 (5146): drop_caches: 1 [pid 5149] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5146] <... sendfile resumed> => [103], 15) = 15 [pid 5146] memfd_create("syzkaller", 0 [pid 5149] <... openat resumed>) = 4 [pid 5149] sendfile(4, 3, [88] [pid 5146] <... memfd_create resumed>) = 5 [pid 5146] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5145] <... sendfile resumed> => [103], 15) = 15 [pid 5145] memfd_create("syzkaller", 0 [pid 5146] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5145] <... memfd_create resumed>) = 5 [pid 5144] <... sendfile resumed> => [103], 15) = 15 [pid 5145] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5144] memfd_create("syzkaller", 0) = 5 [pid 5144] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 84.660690][ T5145] syz-executor326 (5145): drop_caches: 1 [ 84.674055][ T5144] syz-executor326 (5144): drop_caches: 1 [ 84.678362][ T5147] syz-executor326 (5147): drop_caches: 1 [pid 5147] <... sendfile resumed> => [103], 15) = 15 [pid 5146] <... write resumed>) = 2097152 [pid 5147] memfd_create("syzkaller", 0) = 5 [pid 5147] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5146] munmap(0x7f87cd1f6000, 138412032 [pid 5145] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5146] <... munmap resumed>) = 0 [pid 5144] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5146] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 6 [pid 5145] <... write resumed>) = 2097152 [pid 5146] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5146] ioctl(6, LOOP_CLR_FD) = 0 [pid 5146] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5146] close(6) = 0 [pid 5146] close(5 [pid 5145] munmap(0x7f87cd1f6000, 138412032 [pid 5147] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5148] <... sendfile resumed> => [103], 15) = 15 [pid 5145] <... munmap resumed>) = 0 [pid 5148] memfd_create("syzkaller", 0 [pid 5145] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5145] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5145] ioctl(6, LOOP_CLR_FD [pid 5148] <... memfd_create resumed>) = 5 [pid 5145] <... ioctl resumed>) = 0 [pid 5148] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5146] <... close resumed>) = 0 [pid 5145] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5145] close(6) = 0 [pid 5145] close(5 [pid 5146] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5144] <... write resumed>) = 2097152 [pid 5146] <... open resumed>) = 5 [pid 5144] munmap(0x7f87cd1f6000, 138412032 [pid 5146] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5145] <... close resumed>) = 0 [pid 5144] <... munmap resumed>) = 0 [ 84.778347][ T5148] syz-executor326 (5148): drop_caches: 1 [ 84.817460][ T5149] syz-executor326 (5149): drop_caches: 1 [pid 5147] <... write resumed>) = 2097152 [pid 5146] <... pwritev resumed>) = 103 [pid 5145] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5144] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5146] exit_group(0 [pid 5148] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5147] munmap(0x7f87cd1f6000, 138412032 [pid 5146] <... exit_group resumed>) = ? [pid 5145] <... open resumed>) = 5 [pid 5144] <... openat resumed>) = 6 [pid 5145] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5144] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5144] ioctl(6, LOOP_CLR_FD) = 0 [pid 5145] <... pwritev resumed>) = 103 [pid 5145] exit_group(0) = ? [pid 5144] ioctl(6, LOOP_SET_FD, 5 [pid 5145] +++ exited with 0 +++ [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5145, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=17 /* 0.17 s */} --- [pid 5144] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5144] close(6 [pid 5060] <... openat resumed>) = 3 [pid 5144] <... close resumed>) = 0 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5144] close(5 [pid 5060] <... ioctl resumed>) = 0 [pid 5147] <... munmap resumed>) = 0 [pid 5060] close(3 [pid 5146] +++ exited with 0 +++ [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5146, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} --- [pid 5060] <... close resumed>) = 0 [pid 5064] restart_syscall(<... resuming interrupted clone ...>) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5064] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5064] ioctl(3, LOOP_CLR_FD) = 0 [pid 5064] close(3) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556b26650) = 5151 ./strace-static-x86_64: Process 5150 attached [pid 5150] set_robust_list(0x555556b26660, 24) = 0 [pid 5150] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5150] setpgid(0, 0) = 0 [pid 5150] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 ./strace-static-x86_64: Process 5151 attached [pid 5150] write(3, "1000", 4 [pid 5151] set_robust_list(0x555556b26660, 24 [pid 5150] <... write resumed>) = 4 [pid 5060] <... clone resumed>, child_tidptr=0x555556b26650) = 5150 [pid 5151] <... set_robust_list resumed>) = 0 [pid 5150] close(3 [pid 5151] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5150] <... close resumed>) = 0 [pid 5147] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5151] <... prctl resumed>) = 0 [pid 5150] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5151] setpgid(0, 0 [pid 5150] <... openat resumed>) = 3 [pid 5150] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5151] <... setpgid resumed>) = 0 [pid 5150] <... openat resumed>) = 4 [pid 5151] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5150] sendfile(4, 3, [88] [pid 5147] <... openat resumed>) = 6 [pid 5144] <... close resumed>) = 0 [pid 5147] ioctl(6, LOOP_SET_FD, 5 [pid 5144] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5151] <... openat resumed>) = 3 [pid 5147] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5151] write(3, "1000", 4 [pid 5147] ioctl(6, LOOP_CLR_FD [pid 5151] <... write resumed>) = 4 [pid 5151] close(3) = 0 [pid 5147] <... ioctl resumed>) = 0 [pid 5151] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5148] <... write resumed>) = 2097152 [pid 5144] <... open resumed>) = 5 [pid 5151] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5147] ioctl(6, LOOP_SET_FD, 5 [pid 5144] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5148] munmap(0x7f87cd1f6000, 138412032 [pid 5151] sendfile(4, 3, [88] [pid 5147] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5147] close(6 [pid 5148] <... munmap resumed>) = 0 [pid 5147] <... close resumed>) = 0 [pid 5144] <... pwritev resumed>) = 103 [pid 5148] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5147] close(5 [pid 5144] exit_group(0) = ? [pid 5148] <... openat resumed>) = 6 [pid 5147] <... close resumed>) = 0 [pid 5144] +++ exited with 0 +++ [pid 5148] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5062] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5144, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=25 /* 0.25 s */} --- [pid 5148] ioctl(6, LOOP_CLR_FD [pid 5147] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5148] <... ioctl resumed>) = 0 [pid 5062] openat(AT_FDCWD, "/dev/loop2", O_RDWR) = 3 [pid 5062] ioctl(3, LOOP_CLR_FD) = 0 [pid 5062] close(3) = 0 [pid 5148] ioctl(6, LOOP_SET_FD, 5 [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5152 attached [pid 5148] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5147] <... open resumed>) = 5 [pid 5152] set_robust_list(0x555556b26660, 24 [pid 5148] close(6 [pid 5147] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5152] <... set_robust_list resumed>) = 0 [pid 5148] <... close resumed>) = 0 [pid 5062] <... clone resumed>, child_tidptr=0x555556b26650) = 5152 [pid 5148] close(5) = 0 [pid 5152] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5152] setpgid(0, 0 [pid 5149] <... sendfile resumed> => [103], 15) = 15 [pid 5148] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5147] <... pwritev resumed>) = 103 [pid 5152] <... setpgid resumed>) = 0 [pid 5152] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5147] exit_group(0 [pid 5152] <... openat resumed>) = 3 [pid 5147] <... exit_group resumed>) = ? [pid 5147] +++ exited with 0 +++ [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5147, si_uid=0, si_status=0, si_utime=3 /* 0.03 s */, si_stime=18 /* 0.18 s */} --- [pid 5152] write(3, "1000", 4) = 4 [pid 5061] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5152] close(3) = 0 [pid 5061] <... openat resumed>) = 3 [pid 5152] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5148] <... open resumed>) = 5 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5152] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5148] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5061] <... ioctl resumed>) = 0 [pid 5061] close(3) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556b26650) = 5153 [pid 5152] <... openat resumed>) = 4 [pid 5149] memfd_create("syzkaller", 0 [pid 5152] sendfile(4, 3, [88]./strace-static-x86_64: Process 5153 attached [pid 5148] <... pwritev resumed>) = 103 [pid 5153] set_robust_list(0x555556b26660, 24 [pid 5149] <... memfd_create resumed>) = 5 [pid 5148] exit_group(0 [pid 5153] <... set_robust_list resumed>) = 0 [pid 5148] <... exit_group resumed>) = ? [pid 5153] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5153] setpgid(0, 0 [pid 5149] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5148] +++ exited with 0 +++ [pid 5153] <... setpgid resumed>) = 0 [pid 5153] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5149] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5148, si_uid=0, si_status=0, si_utime=0, si_stime=19 /* 0.19 s */} --- [pid 5153] <... openat resumed>) = 3 [pid 5153] write(3, "1000", 4) = 4 [pid 5153] close(3) = 0 [pid 5153] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5067] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5153] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5067] <... openat resumed>) = 3 [pid 5067] ioctl(3, LOOP_CLR_FD [pid 5153] <... openat resumed>) = 4 [pid 5067] <... ioctl resumed>) = 0 [pid 5067] close(3) = 0 [ 85.039361][ T5149] syz-executor326 (5149): drop_caches: 1 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5154 attached [pid 5153] sendfile(4, 3, [88] [pid 5154] set_robust_list(0x555556b26660, 24 [pid 5067] <... clone resumed>, child_tidptr=0x555556b26650) = 5154 [pid 5154] <... set_robust_list resumed>) = 0 [pid 5154] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5154] setpgid(0, 0 [pid 5149] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5154] <... setpgid resumed>) = 0 [pid 5154] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5154] write(3, "1000", 4) = 4 [pid 5154] close(3) = 0 [pid 5154] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5154] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5149] <... write resumed>) = 2097152 [pid 5149] munmap(0x7f87cd1f6000, 138412032 [pid 5154] <... openat resumed>) = 4 [pid 5154] sendfile(4, 3, [88] [pid 5149] <... munmap resumed>) = 0 [pid 5149] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 6 [pid 5149] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5149] ioctl(6, LOOP_CLR_FD) = 0 [pid 5149] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5149] close(6) = 0 [pid 5149] close(5) = 0 [pid 5149] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [ 85.211357][ T5152] syz-executor326 (5152): drop_caches: 1 [ 85.227935][ T5150] syz-executor326 (5150): drop_caches: 1 [pid 5149] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452) = 103 [pid 5149] exit_group(0) = ? [pid 5149] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5149, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=18 /* 0.18 s */} --- [pid 5070] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5070] ioctl(3, LOOP_CLR_FD) = 0 [pid 5070] close(3) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5155 attached , child_tidptr=0x555556b26650) = 5155 [pid 5155] set_robust_list(0x555556b26660, 24) = 0 [pid 5155] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5155] setpgid(0, 0) = 0 [ 85.269692][ T5151] syz-executor326 (5151): drop_caches: 1 [pid 5155] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5155] write(3, "1000", 4) = 4 [pid 5155] close(3) = 0 [pid 5155] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5155] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 85.322417][ T5153] syz-executor326 (5153): drop_caches: 1 [pid 5155] sendfile(4, 3, [88] [pid 5152] <... sendfile resumed> => [103], 15) = 15 [ 85.432355][ T5154] syz-executor326 (5154): drop_caches: 1 [ 85.469972][ T5152] syz-executor326 (5152): drop_caches: 1 [pid 5151] <... sendfile resumed> => [103], 15) = 15 [pid 5151] memfd_create("syzkaller", 0) = 5 [pid 5152] memfd_create("syzkaller", 0 [pid 5151] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5152] <... memfd_create resumed>) = 5 [pid 5152] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 85.481090][ T5151] syz-executor326 (5151): drop_caches: 1 [pid 5150] <... sendfile resumed> => [103], 15) = 15 [pid 5150] memfd_create("syzkaller", 0) = 5 [pid 5150] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5154] <... sendfile resumed> => [103], 15) = 15 [pid 5153] <... sendfile resumed> => [103], 15) = 15 [pid 5153] memfd_create("syzkaller", 0 [pid 5154] memfd_create("syzkaller", 0 [pid 5152] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5151] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5153] <... memfd_create resumed>) = 5 [pid 5153] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5154] <... memfd_create resumed>) = 5 [ 85.508909][ T5150] syz-executor326 (5150): drop_caches: 1 [ 85.546705][ T5155] syz-executor326 (5155): drop_caches: 1 [ 85.558437][ T5153] syz-executor326 (5153): drop_caches: 1 [ 85.570913][ T5154] syz-executor326 (5154): drop_caches: 1 [pid 5154] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5150] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5152] <... write resumed>) = 2097152 [pid 5151] <... write resumed>) = 2097152 [pid 5152] munmap(0x7f87cd1f6000, 138412032 [pid 5151] munmap(0x7f87cd1f6000, 138412032 [pid 5150] <... write resumed>) = 2097152 [pid 5150] munmap(0x7f87cd1f6000, 138412032) = 0 [pid 5154] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5151] <... munmap resumed>) = 0 [pid 5153] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5152] <... munmap resumed>) = 0 [pid 5151] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5150] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5152] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5150] <... openat resumed>) = 6 [pid 5152] <... openat resumed>) = 6 [pid 5151] <... openat resumed>) = 6 [pid 5150] ioctl(6, LOOP_SET_FD, 5 [pid 5151] ioctl(6, LOOP_SET_FD, 5 [pid 5150] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5150] ioctl(6, LOOP_CLR_FD [pid 5151] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5151] ioctl(6, LOOP_CLR_FD) = 0 [pid 5152] ioctl(6, LOOP_SET_FD, 5 [pid 5151] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5152] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5151] close(6 [pid 5150] <... ioctl resumed>) = 0 [pid 5150] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5151] <... close resumed>) = 0 [pid 5152] ioctl(6, LOOP_CLR_FD) = 0 [pid 5151] close(5 [pid 5152] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5150] close(6 [pid 5151] <... close resumed>) = 0 [pid 5155] <... sendfile resumed> => [103], 15) = 15 [pid 5154] <... write resumed>) = 2097152 [pid 5152] close(6 [pid 5150] <... close resumed>) = 0 [pid 5152] <... close resumed>) = 0 [pid 5150] close(5 [pid 5152] close(5 [pid 5151] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5155] memfd_create("syzkaller", 0 [pid 5154] munmap(0x7f87cd1f6000, 138412032 [pid 5155] <... memfd_create resumed>) = 5 [pid 5155] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5151] <... open resumed>) = 5 [pid 5151] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5154] <... munmap resumed>) = 0 [pid 5154] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 6 [pid 5151] <... pwritev resumed>) = 103 [pid 5150] <... close resumed>) = 0 [pid 5154] ioctl(6, LOOP_SET_FD, 5 [pid 5153] <... write resumed>) = 2097152 [pid 5151] exit_group(0 [pid 5154] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5153] munmap(0x7f87cd1f6000, 138412032 [pid 5151] <... exit_group resumed>) = ? [pid 5150] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5154] ioctl(6, LOOP_CLR_FD) = 0 [pid 5150] <... open resumed>) = 5 [pid 5151] +++ exited with 0 +++ [pid 5150] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [ 85.696772][ T5155] syz-executor326 (5155): drop_caches: 1 [pid 5154] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5154] close(6) = 0 [pid 5154] close(5) = 0 [pid 5153] <... munmap resumed>) = 0 [pid 5152] <... close resumed>) = 0 [pid 5153] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5151, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=18 /* 0.18 s */} --- [pid 5152] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5150] <... pwritev resumed>) = 103 [pid 5153] <... openat resumed>) = 6 [pid 5153] ioctl(6, LOOP_SET_FD, 5 [pid 5152] <... open resumed>) = 5 [pid 5150] exit_group(0 [pid 5153] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5152] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5150] <... exit_group resumed>) = ? [pid 5153] ioctl(6, LOOP_CLR_FD) = 0 [pid 5064] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5150] +++ exited with 0 +++ [pid 5064] ioctl(3, LOOP_CLR_FD [pid 5153] ioctl(6, LOOP_SET_FD, 5 [pid 5064] <... ioctl resumed>) = 0 [pid 5153] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5150, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=24 /* 0.24 s */} --- [pid 5064] close(3 [pid 5153] close(6) = 0 [pid 5064] <... close resumed>) = 0 [pid 5153] close(5 [pid 5152] <... pwritev resumed>) = 103 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5060] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5154] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000./strace-static-x86_64: Process 5156 attached ) = 5 [pid 5060] <... openat resumed>) = 3 [pid 5156] set_robust_list(0x555556b26660, 24 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5156] <... set_robust_list resumed>) = 0 [pid 5154] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5156] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5060] <... ioctl resumed>) = 0 [pid 5156] <... prctl resumed>) = 0 [pid 5152] exit_group(0 [pid 5064] <... clone resumed>, child_tidptr=0x555556b26650) = 5156 [pid 5060] close(3 [pid 5156] setpgid(0, 0 [pid 5152] <... exit_group resumed>) = ? [pid 5060] <... close resumed>) = 0 [pid 5156] <... setpgid resumed>) = 0 [pid 5060] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5156] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5060] <... clone resumed>, child_tidptr=0x555556b26650) = 5157 ./strace-static-x86_64: Process 5157 attached [pid 5157] set_robust_list(0x555556b26660, 24) = 0 [pid 5157] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5154] <... pwritev resumed>) = 103 [pid 5157] <... prctl resumed>) = 0 [pid 5156] <... openat resumed>) = 3 [pid 5155] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5154] exit_group(0 [pid 5152] +++ exited with 0 +++ [pid 5156] write(3, "1000", 4 [pid 5154] <... exit_group resumed>) = ? [pid 5157] setpgid(0, 0 [pid 5156] <... write resumed>) = 4 [pid 5154] +++ exited with 0 +++ [pid 5062] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5152, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=20 /* 0.20 s */} --- [pid 5157] <... setpgid resumed>) = 0 [pid 5156] close(3 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5154, si_uid=0, si_status=0, si_utime=0, si_stime=13 /* 0.13 s */} --- [pid 5062] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5157] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5062] <... openat resumed>) = 3 [pid 5156] <... close resumed>) = 0 [pid 5062] ioctl(3, LOOP_CLR_FD [pid 5156] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5067] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5062] <... ioctl resumed>) = 0 [pid 5067] <... openat resumed>) = 3 [pid 5062] close(3 [pid 5156] <... openat resumed>) = 3 [pid 5067] ioctl(3, LOOP_CLR_FD [pid 5062] <... close resumed>) = 0 [pid 5156] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5062] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5156] <... openat resumed>) = 4 [pid 5067] <... ioctl resumed>) = 0 ./strace-static-x86_64: Process 5158 attached [pid 5156] sendfile(4, 3, [88] [pid 5067] close(3 [pid 5062] <... clone resumed>, child_tidptr=0x555556b26650) = 5158 [pid 5158] set_robust_list(0x555556b26660, 24 [pid 5067] <... close resumed>) = 0 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5158] <... set_robust_list resumed>) = 0 [pid 5157] <... openat resumed>) = 3 [pid 5158] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5157] write(3, "1000", 4 [pid 5158] <... prctl resumed>) = 0 [pid 5157] <... write resumed>) = 4 [pid 5158] setpgid(0, 0 [pid 5157] close(3 [pid 5158] <... setpgid resumed>) = 0 [pid 5157] <... close resumed>) = 0 [pid 5158] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5157] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5158] <... openat resumed>) = 3 [pid 5157] <... openat resumed>) = 3 [pid 5158] write(3, "1000", 4 [pid 5157] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5158] <... write resumed>) = 4 [pid 5157] <... openat resumed>) = 4 [pid 5158] close(3 [pid 5157] sendfile(4, 3, [88] [pid 5158] <... close resumed>) = 0 [pid 5158] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5067] <... clone resumed>, child_tidptr=0x555556b26650) = 5159 ./strace-static-x86_64: Process 5159 attached [pid 5159] set_robust_list(0x555556b26660, 24) = 0 [pid 5159] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5158] <... openat resumed>) = 3 [pid 5159] <... prctl resumed>) = 0 [pid 5158] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5159] setpgid(0, 0 [pid 5158] <... openat resumed>) = 4 [pid 5159] <... setpgid resumed>) = 0 [pid 5158] sendfile(4, 3, [88] [pid 5159] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5159] write(3, "1000", 4) = 4 [pid 5159] close(3) = 0 [pid 5159] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5159] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5155] <... write resumed>) = 2097152 [pid 5153] <... close resumed>) = 0 [pid 5155] munmap(0x7f87cd1f6000, 138412032) = 0 [pid 5159] <... openat resumed>) = 4 [pid 5153] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5155] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 6 [pid 5155] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5159] sendfile(4, 3, [88] [pid 5155] ioctl(6, LOOP_CLR_FD) = 0 [pid 5153] <... open resumed>) = 5 [pid 5155] ioctl(6, LOOP_SET_FD, 5 [pid 5153] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5155] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5155] close(6) = 0 [pid 5155] close(5 [pid 5153] <... pwritev resumed>) = 103 [pid 5153] exit_group(0) = ? [pid 5153] +++ exited with 0 +++ [pid 5155] <... close resumed>) = 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5153, si_uid=0, si_status=0, si_utime=0, si_stime=18 /* 0.18 s */} --- [pid 5061] openat(AT_FDCWD, "/dev/loop1", 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./strace-static-x86_64: Process 5160 attached [pid 5155] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5155] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5160] set_robust_list(0x555556b26660, 24 [pid 5061] <... clone resumed>, child_tidptr=0x555556b26650) = 5160 [pid 5160] <... set_robust_list resumed>) = 0 [pid 5160] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5160] setpgid(0, 0 [pid 5155] <... pwritev resumed>) = 103 [pid 5160] <... setpgid resumed>) = 0 [pid 5155] exit_group(0) = ? [pid 5160] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5155] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5155, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=16 /* 0.16 s */} --- [pid 5160] <... openat resumed>) = 3 [pid 5160] write(3, "1000", 4) = 4 [pid 5160] close(3) = 0 [pid 5070] openat(AT_FDCWD, "/dev/loop5", O_RDWR [pid 5160] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5070] <... openat resumed>) = 3 [pid 5160] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5070] ioctl(3, LOOP_CLR_FD) = 0 [pid 5160] sendfile(4, 3, [88] [pid 5070] close(3) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555556b26650) = 5161 ./strace-static-x86_64: Process 5161 attached [pid 5161] set_robust_list(0x555556b26660, 24) = 0 [pid 5161] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5161] setpgid(0, 0) = 0 [pid 5161] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5161] write(3, "1000", 4) = 4 [pid 5161] close(3) = 0 [pid 5161] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5161] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 86.061208][ T5156] syz-executor326 (5156): drop_caches: 1 [ 86.132424][ T5157] syz-executor326 (5157): drop_caches: 1 [ 86.142925][ T5158] syz-executor326 (5158): drop_caches: 1 [ 86.172552][ T5159] syz-executor326 (5159): drop_caches: 1 [ 86.197171][ T5160] syz-executor326 (5160): drop_caches: 1 [ 86.235818][ T5156] syz-executor326 (5156): drop_caches: 1 [pid 5161] sendfile(4, 3, [88] [pid 5156] <... sendfile resumed> => [103], 15) = 15 [pid 5156] memfd_create("syzkaller", 0) = 5 [pid 5156] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 86.274856][ T5161] syz-executor326 (5161): drop_caches: 1 [pid 5157] <... sendfile resumed> => [103], 15) = 15 [pid 5157] memfd_create("syzkaller", 0 [pid 5156] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5159] <... sendfile resumed> => [103], 15) = 15 [pid 5157] <... memfd_create resumed>) = 5 [pid 5157] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5159] memfd_create("syzkaller", 0) = 5 [pid 5159] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5158] <... sendfile resumed> => [103], 15) = 15 [ 86.345949][ T5157] syz-executor326 (5157): drop_caches: 1 [ 86.382749][ T5159] syz-executor326 (5159): drop_caches: 1 [ 86.388609][ T5158] syz-executor326 (5158): drop_caches: 1 [pid 5158] memfd_create("syzkaller", 0) = 5 [pid 5158] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5156] <... write resumed>) = 2097152 [pid 5156] munmap(0x7f87cd1f6000, 138412032) = 0 [pid 5156] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 6 [pid 5156] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5156] ioctl(6, LOOP_CLR_FD) = 0 [pid 5160] <... sendfile resumed> => [103], 15) = 15 [pid 5159] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5157] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5160] memfd_create("syzkaller", 0) = 5 [pid 5160] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5156] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5156] close(6) = 0 [ 86.441202][ T5160] syz-executor326 (5160): drop_caches: 1 [pid 5156] close(5 [pid 5158] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5157] <... write resumed>) = 2097152 [pid 5159] <... write resumed>) = 2097152 [pid 5158] <... write resumed>) = 2097152 [pid 5157] munmap(0x7f87cd1f6000, 138412032 [pid 5156] <... close resumed>) = 0 [pid 5156] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5157] <... munmap resumed>) = 0 [pid 5159] munmap(0x7f87cd1f6000, 138412032 [pid 5158] munmap(0x7f87cd1f6000, 138412032 [pid 5156] <... open resumed>) = 5 [pid 5156] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5157] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 6 [pid 5157] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5159] <... munmap resumed>) = 0 [pid 5159] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5158] <... munmap resumed>) = 0 [pid 5157] ioctl(6, LOOP_CLR_FD [pid 5158] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5159] <... openat resumed>) = 6 [pid 5157] <... ioctl resumed>) = 0 [pid 5159] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5159] ioctl(6, LOOP_CLR_FD [pid 5161] <... sendfile resumed> => [103], 15) = 15 [pid 5160] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5158] <... openat resumed>) = 6 [pid 5159] <... ioctl resumed>) = 0 [pid 5161] memfd_create("syzkaller", 0 [pid 5157] ioctl(6, LOOP_SET_FD, 5 [pid 5156] <... pwritev resumed>) = 103 [pid 5158] ioctl(6, LOOP_SET_FD, 5 [pid 5157] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5156] exit_group(0 [pid 5158] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5157] close(6 [pid 5156] <... exit_group resumed>) = ? [pid 5158] ioctl(6, LOOP_CLR_FD [pid 5157] <... close resumed>) = 0 [pid 5156] +++ exited with 0 +++ [pid 5158] <... ioctl resumed>) = 0 [pid 5157] close(5 [pid 5064] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5156, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=17 /* 0.17 s */} --- [pid 5161] <... memfd_create resumed>) = 5 [pid 5159] ioctl(6, LOOP_SET_FD, 5 [pid 5161] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5159] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5161] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5064] openat(AT_FDCWD, "/dev/loop3", O_RDWR [pid 5159] close(6 [pid 5158] ioctl(6, LOOP_SET_FD, 5 [pid 5064] <... openat resumed>) = 3 [pid 5159] <... close resumed>) = 0 [pid 5064] ioctl(3, LOOP_CLR_FD [pid 5158] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5159] close(5 [pid 5064] <... ioctl resumed>) = 0 [pid 5158] close(6) = 0 [pid 5158] close(5) = 0 [ 86.531615][ T5161] syz-executor326 (5161): drop_caches: 1 [pid 5064] close(3) = 0 [pid 5157] <... close resumed>) = 0 [pid 5064] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5160] <... write resumed>) = 2097152 [pid 5159] <... close resumed>) = 0 [pid 5158] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5160] munmap(0x7f87cd1f6000, 138412032 [pid 5159] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5158] <... open resumed>) = 5 [pid 5064] <... clone resumed>, child_tidptr=0x555556b26650) = 5162 ./strace-static-x86_64: Process 5162 attached [pid 5160] <... munmap resumed>) = 0 [pid 5159] <... open resumed>) = 5 [pid 5158] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5157] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5160] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5159] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5160] <... openat resumed>) = 6 [pid 5160] ioctl(6, LOOP_SET_FD, 5 [pid 5162] set_robust_list(0x555556b26660, 24 [pid 5160] <... ioctl resumed>) = -1 EBUSY (Device or resource busy) [pid 5157] <... open resumed>) = 5 [pid 5160] ioctl(6, LOOP_CLR_FD [pid 5157] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5162] <... set_robust_list resumed>) = 0 [pid 5160] <... ioctl resumed>) = 0 [pid 5162] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5160] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5160] close(6) = 0 [pid 5160] close(5 [pid 5162] setpgid(0, 0) = 0 [pid 5162] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5158] <... pwritev resumed>) = 103 [pid 5157] <... pwritev resumed>) = 103 [pid 5158] exit_group(0 [pid 5157] exit_group(0 [pid 5159] <... pwritev resumed>) = 103 [pid 5157] <... exit_group resumed>) = ? [pid 5158] <... exit_group resumed>) = ? [pid 5161] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5159] exit_group(0 [pid 5158] +++ exited with 0 +++ [pid 5157] +++ exited with 0 +++ [pid 5062] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5158, si_uid=0, si_status=0, si_utime=2 /* 0.02 s */, si_stime=17 /* 0.17 s */} --- [pid 5060] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5157, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=21 /* 0.21 s */} --- [pid 5160] <... close resumed>) = 0 [pid 5159] <... exit_group resumed>) = ? [pid 5060] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5162] <... openat resumed>) = 3 [pid 5060] <... openat resumed>) = 3 [pid 5060] ioctl(3, LOOP_CLR_FD [pid 5062] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5162] write(3, "1000", 4 [pid 5062] <... openat resumed>) = 3 [pid 5060] <... ioctl resumed>) = 0 [pid 5062] ioctl(3, LOOP_CLR_FD [pid 5162] <... write resumed>) = 4 [pid 5062] <... ioctl resumed>) = 0 [pid 5060] close(3 [pid 5160] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000 [pid 5062] close(3 [pid 5162] close(3 [pid 5160] <... open resumed>) = 5 [pid 5159] +++ exited with 0 +++ [pid 5062] <... close resumed>) = 0 [pid 5060] <... close resumed>) = 0 [pid 5162] <... close resumed>) = 0 [pid 5067] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5159, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=15 /* 0.15 s */} --- [pid 5162] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5160] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452 [pid 5062] 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 [pid 5162] <... openat resumed>) = 3 ./strace-static-x86_64: Process 5163 attached [pid 5162] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY./strace-static-x86_64: Process 5164 attached [pid 5163] set_robust_list(0x555556b26660, 24 [pid 5162] <... openat resumed>) = 4 [pid 5062] <... clone resumed>, child_tidptr=0x555556b26650) = 5163 [pid 5164] set_robust_list(0x555556b26660, 24 [pid 5163] <... set_robust_list resumed>) = 0 [pid 5162] sendfile(4, 3, [88] [pid 5164] <... set_robust_list resumed>) = 0 [pid 5163] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5160] <... pwritev resumed>) = 103 [pid 5060] <... clone resumed>, child_tidptr=0x555556b26650) = 5164 [pid 5164] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5163] <... prctl resumed>) = 0 [pid 5160] exit_group(0 [pid 5163] setpgid(0, 0 [pid 5160] <... exit_group resumed>) = ? [pid 5164] <... prctl resumed>) = 0 [pid 5163] <... setpgid resumed>) = 0 [pid 5164] setpgid(0, 0 [pid 5163] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5160] +++ exited with 0 +++ [pid 5067] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5164] <... setpgid resumed>) = 0 [pid 5061] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5160, si_uid=0, si_status=0, si_utime=1 /* 0.01 s */, si_stime=15 /* 0.15 s */} --- [pid 5164] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5067] <... openat resumed>) = 3 [pid 5163] <... openat resumed>) = 3 [pid 5067] ioctl(3, LOOP_CLR_FD) = 0 [pid 5061] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5163] write(3, "1000", 4 [pid 5067] close(3 [pid 5061] <... openat resumed>) = 3 [pid 5163] <... write resumed>) = 4 [pid 5163] close(3) = 0 [pid 5067] <... close resumed>) = 0 [pid 5061] ioctl(3, LOOP_CLR_FD [pid 5164] <... openat resumed>) = 3 [pid 5067] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5061] <... ioctl resumed>) = 0 [pid 5163] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5061] close(3 [pid 5163] <... openat resumed>) = 3 [pid 5067] <... clone resumed>, child_tidptr=0x555556b26650) = 5165 [pid 5061] <... close resumed>) = 0 [pid 5061] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5164] write(3, "1000", 4 [pid 5163] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5164] <... write resumed>) = 4 [pid 5163] <... openat resumed>) = 4 [pid 5061] <... clone resumed>, child_tidptr=0x555556b26650) = 5166 [pid 5164] close(3./strace-static-x86_64: Process 5165 attached ) = 0 ./strace-static-x86_64: Process 5166 attached [pid 5165] set_robust_list(0x555556b26660, 24 [pid 5164] openat(AT_FDCWD, "/proc/partitions", O_RDONLY [pid 5163] sendfile(4, 3, [88] [pid 5161] <... write resumed>) = 2097152 [pid 5166] set_robust_list(0x555556b26660, 24 [pid 5165] <... set_robust_list resumed>) = 0 [pid 5165] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5165] setpgid(0, 0 [pid 5166] <... set_robust_list resumed>) = 0 [pid 5165] <... setpgid resumed>) = 0 [pid 5164] <... openat resumed>) = 3 [pid 5166] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5165] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5164] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5165] write(3, "1000", 4) = 4 [pid 5166] <... prctl resumed>) = 0 [pid 5165] close(3 [pid 5164] <... openat resumed>) = 4 [pid 5166] setpgid(0, 0 [pid 5165] <... close resumed>) = 0 [pid 5166] <... setpgid resumed>) = 0 [pid 5165] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5166] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5164] sendfile(4, 3, [88] [pid 5166] <... openat resumed>) = 3 [pid 5165] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY [pid 5166] write(3, "1000", 4 [pid 5165] <... openat resumed>) = 4 [pid 5166] <... write resumed>) = 4 [pid 5165] sendfile(4, 3, [88] [pid 5166] close(3 [pid 5161] munmap(0x7f87cd1f6000, 138412032 [pid 5166] <... close resumed>) = 0 [pid 5161] <... munmap resumed>) = 0 [pid 5166] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5166] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [pid 5166] sendfile(4, 3, [88] [pid 5161] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 6 [pid 5161] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5161] ioctl(6, LOOP_CLR_FD) = 0 [pid 5161] ioctl(6, LOOP_SET_FD, 5) = -1 EBUSY (Device or resource busy) [pid 5161] close(6) = 0 [pid 5161] close(5) = 0 [pid 5161] open("./file1", O_RDWR|O_CREAT|O_SYNC|O_NOATIME|FASYNC, 000) = 5 [pid 5161] pwritev(5, [{iov_base="\xef\xd9\x3e\x66\x46\x70\xbf\xd2\xa6\xb3\xd1\x19\x7c\x8d\x01\xd2\x67\x23\x05\x16\x28\xc9\xcc\x52\xa5\x98\xe2\xa6\xd0\xcf\x8b\xb0\x0d\x25\x2c\x82\x10\xee\x02\x97\x1a\xd2\x5c\x48\x3b\xbd\x96\x85\x08\xfa\x65\x4e\x58\x1a\xd9\x71\x51\x63\x85\x35\x31\xcc\xdb\xde\x9c\x85\xcd\xa0\xb0\x84\x0c\xd6\x64\xea\x6f\xf8\x9e\x78\x63\xf6\xac\x82\x8e\x16\xea\x7e\xd2\xea\xa1\xbe\x00\x7d\x10\x60\x06\xe8\x74\x54\x75\x86"..., iov_len=103}, {iov_base=NULL, iov_len=0}], 2, 11452) = 103 [pid 5161] exit_group(0) = ? [pid 5161] +++ exited with 0 +++ [pid 5070] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5161, si_uid=0, si_status=0, si_utime=0, si_stime=16 /* 0.16 s */} --- [pid 5070] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5070] ioctl(3, LOOP_CLR_FD) = 0 [pid 5070] close(3) = 0 [pid 5070] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5167 attached , child_tidptr=0x555556b26650) = 5167 [pid 5167] set_robust_list(0x555556b26660, 24) = 0 [pid 5167] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5167] setpgid(0, 0) = 0 [pid 5167] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [ 86.840439][ T27] cfg80211: failed to load regulatory.db [pid 5167] write(3, "1000", 4) = 4 [pid 5167] close(3) = 0 [pid 5167] openat(AT_FDCWD, "/proc/partitions", O_RDONLY) = 3 [pid 5167] openat(AT_FDCWD, "/proc/sys/vm/drop_caches", O_WRONLY) = 4 [ 86.976452][ T5164] syz-executor326 (5164): drop_caches: 1 [ 86.984684][ T5163] syz-executor326 (5163): drop_caches: 1 [ 86.987671][ T5162] syz-executor326 (5162): drop_caches: 1 [ 87.026605][ T5165] syz-executor326 (5165): drop_caches: 1 [ 87.094740][ T5166] syz-executor326 (5166): drop_caches: 1 [pid 5167] sendfile(4, 3, [88] [pid 5163] <... sendfile resumed> => [103], 15) = 15 [ 87.143185][ T5167] syz-executor326 (5167): drop_caches: 1 [ 87.167860][ T5163] syz-executor326 (5163): drop_caches: 1 [ 87.185732][ T5164] syz-executor326 (5164): drop_caches: 1 [pid 5164] <... sendfile resumed> => [103], 15) = 15 [pid 5163] memfd_create("syzkaller", 0 [pid 5162] <... sendfile resumed> => [103], 15) = 15 [pid 5164] memfd_create("syzkaller", 0 [pid 5163] <... memfd_create resumed>) = 5 [pid 5163] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5164] <... memfd_create resumed>) = 5 [pid 5164] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5163] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5164] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5162] memfd_create("syzkaller", 0) = 5 [pid 5162] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 87.212808][ T5162] syz-executor326 (5162): drop_caches: 1 [ 87.247205][ T5165] syz-executor326 (5165): drop_caches: 1 [pid 5165] <... sendfile resumed> => [103], 15) = 15 [pid 5167] <... sendfile resumed> => [103], 15) = 15 [pid 5164] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5163] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5167] memfd_create("syzkaller", 0 [pid 5165] memfd_create("syzkaller", 0) = 5 [pid 5165] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5167] <... memfd_create resumed>) = 5 [pid 5165] <... mmap resumed>) = 0x7f87cd1f6000 [pid 5167] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [pid 5166] <... sendfile resumed> => [103], 15) = 15 [pid 5166] memfd_create("syzkaller", 0 [pid 5162] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5166] <... memfd_create resumed>) = 5 [pid 5166] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f87cd1f6000 [ 87.265402][ T5167] syz-executor326 (5167): drop_caches: 1 [ 87.296826][ T5166] syz-executor326 (5166): drop_caches: 1 [pid 5167] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5165] write(5, "\xeb\x52\x90\x4e\x54\x46\x53\x20\x20\x20\x20\x00\x04\x40\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\x07\x00\x00\x00\x00\x00\x00\x02\x00\x00\x00\x00\x00\x00\x00\x0f\x00\x00\x00\x00\x00\x00\x00\xf6\x00\x00\x00\xf4\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 5164] <... write resumed>) = 2097152