./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2969935721 <...> DUID 00:04:dd:0f:a4:e5:cb:b8:04:95:2f:30:92:03:b3:b6:0d:bc forked to background, child pid 4644 [ 29.970681][ T4645] 8021q: adding VLAN 0 to HW filter on device bond0 [ 29.983486][ T4645] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller Warning: Permanently added '10.128.0.207' (ECDSA) to the list of known hosts. execve("./syz-executor2969935721", ["./syz-executor2969935721"], 0x7ffd41cc3c00 /* 10 vars */) = 0 brk(NULL) = 0x55555665c000 brk(0x55555665cc40) = 0x55555665cc40 arch_prctl(ARCH_SET_FS, 0x55555665c300) = 0 uname({sysname="Linux", nodename="syzkaller", ...}) = 0 set_tid_address(0x55555665c5d0) = 5073 set_robust_list(0x55555665c5e0, 24) = 0 rt_sigaction(SIGRTMIN, {sa_handler=0x7f5b1fb6e530, sa_mask=[], sa_flags=SA_RESTORER|SA_SIGINFO, sa_restorer=0x7f5b1fb6ec00}, NULL, 8) = 0 rt_sigaction(SIGRT_1, {sa_handler=0x7f5b1fb6e5d0, sa_mask=[], sa_flags=SA_RESTORER|SA_RESTART|SA_SIGINFO, sa_restorer=0x7f5b1fb6ec00}, NULL, 8) = 0 rt_sigprocmask(SIG_UNBLOCK, [RTMIN RT_1], NULL, 8) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2969935721", 4096) = 28 brk(0x55555667dc40) = 0x55555667dc40 brk(0x55555667e000) = 0x55555667e000 mprotect(0x7f5b1fc36000, 16384, PROT_READ) = 0 mmap(0x1ffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffff000 mmap(0x20000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x20000000 mmap(0x21000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x21000000 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5074 attached , child_tidptr=0x55555665c5d0) = 5074 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5074] set_robust_list(0x55555665c5e0, 24./strace-static-x86_64: Process 5075 attached [pid 5073] <... clone resumed>, child_tidptr=0x55555665c5d0) = 5075 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5074] <... set_robust_list resumed>) = 0 [pid 5073] <... clone resumed>, child_tidptr=0x55555665c5d0) = 5076 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5074] getpid() = 5074 [pid 5073] <... clone resumed>, child_tidptr=0x55555665c5d0) = 5077 [pid 5074] mkdir("./syzkaller.oOMWbS", 0700 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55555665c5d0) = 5078 [pid 5073] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5074] <... mkdir resumed>) = 0 [pid 5073] <... clone resumed>, child_tidptr=0x55555665c5d0) = 5079 ./strace-static-x86_64: Process 5078 attached ./strace-static-x86_64: Process 5079 attached [pid 5078] set_robust_list(0x55555665c5e0, 24 [pid 5079] set_robust_list(0x55555665c5e0, 24 [pid 5078] <... set_robust_list resumed>) = 0 [pid 5078] getpid( [pid 5079] <... set_robust_list resumed>) = 0 [pid 5074] chmod("./syzkaller.oOMWbS", 0777 [pid 5075] set_robust_list(0x55555665c5e0, 24 [pid 5078] <... getpid resumed>) = 5078 [pid 5079] getpid( [pid 5078] mkdir("./syzkaller.T0KLb9", 0700 [pid 5079] <... getpid resumed>) = 5079 [pid 5079] mkdir("./syzkaller.tJz5th", 0700 [pid 5078] <... mkdir resumed>) = 0 [pid 5074] <... chmod resumed>) = 0 [pid 5075] <... set_robust_list resumed>) = 0 [pid 5079] <... mkdir resumed>) = 0 ./strace-static-x86_64: Process 5077 attached [pid 5075] getpid( [pid 5074] chdir("./syzkaller.oOMWbS" [pid 5077] set_robust_list(0x55555665c5e0, 24) = 0 [pid 5077] getpid( [pid 5079] chmod("./syzkaller.tJz5th", 0777 [pid 5077] <... getpid resumed>) = 5077 [pid 5078] chmod("./syzkaller.T0KLb9", 0777 [pid 5079] <... chmod resumed>) = 0 [pid 5077] mkdir("./syzkaller.SUC4n8", 0700 [pid 5078] <... chmod resumed>) = 0 [pid 5079] chdir("./syzkaller.tJz5th" [pid 5075] <... getpid resumed>) = 5075 [pid 5074] <... chdir resumed>) = 0 [pid 5078] chdir("./syzkaller.T0KLb9" [pid 5079] <... chdir resumed>) = 0 [pid 5075] mkdir("./syzkaller.pIdYMV", 0700 [pid 5074] mkdir("./0", 0777) = 0 [pid 5078] <... chdir resumed>) = 0 [pid 5079] mkdir("./0", 0777 [pid 5078] mkdir("./0", 0777 [pid 5075] <... mkdir resumed>) = 0 [pid 5074] openat(AT_FDCWD, "/dev/loop0", O_RDWR [pid 5075] chmod("./syzkaller.pIdYMV", 0777 [pid 5074] <... openat resumed>) = 3 [pid 5075] <... chmod resumed>) = 0 [pid 5074] ioctl(3, LOOP_CLR_FD [pid 5079] <... mkdir resumed>) = 0 [pid 5075] chdir("./syzkaller.pIdYMV" [pid 5074] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5078] <... mkdir resumed>) = 0 [pid 5077] <... mkdir resumed>) = 0 [pid 5077] chmod("./syzkaller.SUC4n8", 0777) = 0 [pid 5078] openat(AT_FDCWD, "/dev/loop4", O_RDWR) = 3 [pid 5079] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 3 [pid 5075] <... chdir resumed>) = 0 [pid 5074] close(3 [pid 5077] chdir("./syzkaller.SUC4n8" [pid 5075] mkdir("./0", 0777 [pid 5077] <... chdir resumed>) = 0 [pid 5077] mkdir("./0", 0777) = 0 [pid 5078] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 5079] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 5078] close(3) = 0 [pid 5078] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5079] close(3) = 0 [pid 5079] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5077] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 3 [pid 5077] ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [pid 5077] close(3) = 0 [pid 5078] <... clone resumed>, child_tidptr=0x55555665c5d0) = 5080 [pid 5077] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5079] <... clone resumed>, child_tidptr=0x55555665c5d0) = 5081 [pid 5077] <... clone resumed>, child_tidptr=0x55555665c5d0) = 5082 ./strace-static-x86_64: Process 5080 attached [pid 5080] set_robust_list(0x55555665c5e0, 24) = 0 [pid 5075] <... mkdir resumed>) = 0 [pid 5074] <... close resumed>) = 0 [pid 5075] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5074] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5075] <... openat resumed>) = 3 [pid 5075] ioctl(3, LOOP_CLR_FD [pid 5074] <... clone resumed>, child_tidptr=0x55555665c5d0) = 5083 ./strace-static-x86_64: Process 5082 attached [pid 5075] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5075] close(3) = 0 [pid 5075] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5080] chdir("./0") = 0 [pid 5082] set_robust_list(0x55555665c5e0, 24./strace-static-x86_64: Process 5076 attached [pid 5075] <... clone resumed>, child_tidptr=0x55555665c5d0) = 5084 [pid 5080] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5076] set_robust_list(0x55555665c5e0, 24 [pid 5082] <... set_robust_list resumed>) = 0 [pid 5080] <... prctl resumed>) = 0 [pid 5076] <... set_robust_list resumed>) = 0 [pid 5082] chdir("./0" [pid 5080] setpgid(0, 0 [pid 5082] <... chdir resumed>) = 0 [pid 5080] <... setpgid resumed>) = 0 ./strace-static-x86_64: Process 5083 attached ./strace-static-x86_64: Process 5081 attached [pid 5082] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5080] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5076] getpid(./strace-static-x86_64: Process 5084 attached [pid 5083] set_robust_list(0x55555665c5e0, 24 [pid 5082] <... prctl resumed>) = 0 [pid 5081] set_robust_list(0x55555665c5e0, 24 [pid 5080] <... openat resumed>) = 3 [pid 5076] <... getpid resumed>) = 5076 [pid 5084] set_robust_list(0x55555665c5e0, 24 [pid 5082] setpgid(0, 0 [pid 5080] write(3, "1000", 4 [pid 5084] <... set_robust_list resumed>) = 0 [pid 5083] <... set_robust_list resumed>) = 0 [pid 5082] <... setpgid resumed>) = 0 [pid 5081] <... set_robust_list resumed>) = 0 [pid 5080] <... write resumed>) = 4 [pid 5076] mkdir("./syzkaller.8dSdsZ", 0700 [pid 5084] chdir("./0" [pid 5083] chdir("./0" [pid 5082] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5080] close(3 [pid 5084] <... chdir resumed>) = 0 [pid 5083] <... chdir resumed>) = 0 [pid 5082] <... openat resumed>) = 3 [pid 5081] chdir("./0" [pid 5080] <... close resumed>) = 0 [pid 5076] <... mkdir resumed>) = 0 [pid 5084] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5082] write(3, "1000", 4 [pid 5080] symlink("/dev/binderfs", "./binderfs" [pid 5083] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5076] chmod("./syzkaller.8dSdsZ", 0777 [pid 5084] <... prctl resumed>) = 0 [pid 5083] <... prctl resumed>) = 0 [pid 5082] <... write resumed>) = 4 [pid 5081] <... chdir resumed>) = 0 [pid 5080] <... symlink resumed>) = 0 [pid 5084] setpgid(0, 0 [pid 5083] setpgid(0, 0 [pid 5082] close(3 [pid 5081] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5080] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5076] <... chmod resumed>) = 0 [pid 5084] <... setpgid resumed>) = 0 [pid 5083] <... setpgid resumed>) = 0 [pid 5082] <... close resumed>) = 0 [pid 5081] <... prctl resumed>) = 0 [pid 5080] <... futex resumed>) = 0 [pid 5076] chdir("./syzkaller.8dSdsZ" [pid 5084] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5083] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5082] symlink("/dev/binderfs", "./binderfs" [pid 5080] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5076] <... chdir resumed>) = 0 [pid 5081] setpgid(0, 0 [pid 5084] <... openat resumed>) = 3 [pid 5083] <... openat resumed>) = 3 [pid 5082] <... symlink resumed>) = 0 [pid 5080] <... mmap resumed>) = 0x7f5b1fb3d000 [pid 5084] write(3, "1000", 4 [pid 5083] write(3, "1000", 4 [pid 5082] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5081] <... setpgid resumed>) = 0 [pid 5080] mprotect(0x7f5b1fb3e000, 131072, PROT_READ|PROT_WRITE [pid 5076] mkdir("./0", 0777 [pid 5084] <... write resumed>) = 4 [pid 5083] <... write resumed>) = 4 [pid 5082] <... futex resumed>) = 0 [pid 5081] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC [pid 5080] <... mprotect resumed>) = 0 [pid 5084] close(3 [pid 5083] close(3 [pid 5082] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5080] clone(child_stack=0x7f5b1fb5d3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5076] <... mkdir resumed>) = 0 [pid 5084] <... close resumed>) = 0 [pid 5083] <... close resumed>) = 0 [pid 5082] <... mmap resumed>) = 0x7f5b1fb3d000 [pid 5081] <... openat resumed>) = 3 [pid 5076] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5084] symlink("/dev/binderfs", "./binderfs" [pid 5083] symlink("/dev/binderfs", "./binderfs" [pid 5082] mprotect(0x7f5b1fb3e000, 131072, PROT_READ|PROT_WRITE [pid 5081] write(3, "1000", 4 [pid 5080] <... clone resumed>, parent_tid=[5085], tls=0x7f5b1fb5d700, child_tidptr=0x7f5b1fb5d9d0) = 5085 [pid 5084] <... symlink resumed>) = 0 [pid 5082] <... mprotect resumed>) = 0 [pid 5083] <... symlink resumed>) = 0 [pid 5080] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5076] <... openat resumed>) = 3 [pid 5081] <... write resumed>) = 4 [pid 5084] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5083] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5082] clone(child_stack=0x7f5b1fb5d3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5081] close(3 [pid 5080] <... futex resumed>) = 0 [pid 5076] ioctl(3, LOOP_CLR_FD [pid 5084] <... futex resumed>) = 0 [pid 5083] <... futex resumed>) = 0 [pid 5081] <... close resumed>) = 0 [pid 5080] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5084] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5083] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5082] <... clone resumed>, parent_tid=[5086], tls=0x7f5b1fb5d700, child_tidptr=0x7f5b1fb5d9d0) = 5086 [pid 5081] symlink("/dev/binderfs", "./binderfs" [pid 5076] <... ioctl resumed>) = -1 ENXIO (No such device or address) [pid 5084] <... mmap resumed>) = 0x7f5b1fb3d000 [pid 5083] <... mmap resumed>) = 0x7f5b1fb3d000 [pid 5082] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5076] close(3 [pid 5084] mprotect(0x7f5b1fb3e000, 131072, PROT_READ|PROT_WRITE [pid 5083] mprotect(0x7f5b1fb3e000, 131072, PROT_READ|PROT_WRITE [pid 5082] <... futex resumed>) = 0 [pid 5081] <... symlink resumed>) = 0 [pid 5076] <... close resumed>) = 0 ./strace-static-x86_64: Process 5085 attached [pid 5084] <... mprotect resumed>) = 0 [pid 5082] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5085] set_robust_list(0x7f5b1fb5d9e0, 24 [pid 5084] clone(child_stack=0x7f5b1fb5d3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5083] <... mprotect resumed>) = 0 [pid 5076] clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD [pid 5081] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5085] <... set_robust_list resumed>) = 0 [pid 5083] clone(child_stack=0x7f5b1fb5d3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5086 attached [pid 5085] memfd_create("syzkaller", 0 [pid 5084] <... clone resumed>, parent_tid=[5088], tls=0x7f5b1fb5d700, child_tidptr=0x7f5b1fb5d9d0) = 5088 [pid 5086] set_robust_list(0x7f5b1fb5d9e0, 24 [pid 5085] <... memfd_create resumed>) = 3 [pid 5084] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5081] <... futex resumed>) = 0 [pid 5076] <... clone resumed>, child_tidptr=0x55555665c5d0) = 5089 [pid 5086] <... set_robust_list resumed>) = 0 [pid 5085] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5084] <... futex resumed>) = 0 [pid 5083] <... clone resumed>, parent_tid=[5090], tls=0x7f5b1fb5d700, child_tidptr=0x7f5b1fb5d9d0) = 5090 [pid 5081] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5086] memfd_create("syzkaller", 0 [pid 5085] <... mmap resumed>) = 0x7f5b1773d000 [pid 5084] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5083] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000./strace-static-x86_64: Process 5090 attached ./strace-static-x86_64: Process 5089 attached ./strace-static-x86_64: Process 5088 attached [pid 5086] <... memfd_create resumed>) = 3 [pid 5083] <... futex resumed>) = 0 [pid 5081] <... mmap resumed>) = 0x7f5b1fb3d000 [pid 5088] set_robust_list(0x7f5b1fb5d9e0, 24 [pid 5086] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5083] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5081] mprotect(0x7f5b1fb3e000, 131072, PROT_READ|PROT_WRITE [pid 5090] set_robust_list(0x7f5b1fb5d9e0, 24 [pid 5089] set_robust_list(0x55555665c5e0, 24 [pid 5088] <... set_robust_list resumed>) = 0 [pid 5086] <... mmap resumed>) = 0x7f5b1773d000 [pid 5081] <... mprotect resumed>) = 0 [pid 5090] <... set_robust_list resumed>) = 0 [pid 5089] <... set_robust_list resumed>) = 0 [pid 5088] memfd_create("syzkaller", 0) = 3 [pid 5081] clone(child_stack=0x7f5b1fb5d3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5088] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5090] memfd_create("syzkaller", 0 [pid 5088] <... mmap resumed>) = 0x7f5b1773d000 [pid 5090] <... memfd_create resumed>) = 3 [pid 5089] chdir("./0" [pid 5081] <... clone resumed>, parent_tid=[5091], tls=0x7f5b1fb5d700, child_tidptr=0x7f5b1fb5d9d0) = 5091 [pid 5090] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0 [pid 5089] <... chdir resumed>) = 0 [pid 5081] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5090] <... mmap resumed>) = 0x7f5b1773d000 [pid 5089] prctl(PR_SET_PDEATHSIG, SIGKILL [pid 5081] <... futex resumed>) = 0 ./strace-static-x86_64: Process 5091 attached [pid 5091] set_robust_list(0x7f5b1fb5d9e0, 24) = 0 [pid 5091] memfd_create("syzkaller", 0 [pid 5089] <... prctl resumed>) = 0 [pid 5081] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5091] <... memfd_create resumed>) = 3 [pid 5091] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5b1773d000 [pid 5089] setpgid(0, 0) = 0 [pid 5089] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5089] write(3, "1000", 4) = 4 [pid 5089] close(3) = 0 [pid 5089] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5089] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5089] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0) = 0x7f5b1fb3d000 [pid 5089] mprotect(0x7f5b1fb3e000, 131072, PROT_READ|PROT_WRITE) = 0 [pid 5089] clone(child_stack=0x7f5b1fb5d3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID./strace-static-x86_64: Process 5092 attached , parent_tid=[5092], tls=0x7f5b1fb5d700, child_tidptr=0x7f5b1fb5d9d0) = 5092 [pid 5092] set_robust_list(0x7f5b1fb5d9e0, 24 [pid 5089] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5089] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=4, tv_nsec=50000000} [pid 5092] <... set_robust_list resumed>) = 0 [pid 5092] memfd_create("syzkaller", 0) = 3 [pid 5092] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f5b1773d000 [pid 5090] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5086] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5091] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5085] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5088] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5092] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 16777216 [pid 5091] <... write resumed>) = 16777216 [pid 5090] <... write resumed>) = 16777216 [pid 5091] munmap(0x7f5b1773d000, 16777216 [pid 5090] munmap(0x7f5b1773d000, 16777216 [pid 5091] <... munmap resumed>) = 0 [pid 5086] <... write resumed>) = 16777216 [pid 5091] openat(AT_FDCWD, "/dev/loop5", O_RDWR) = 4 [pid 5091] ioctl(4, LOOP_SET_FD, 3 [pid 5086] munmap(0x7f5b1773d000, 16777216 [pid 5090] <... munmap resumed>) = 0 [pid 5090] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5090] ioctl(4, LOOP_SET_FD, 3 [pid 5086] <... munmap resumed>) = 0 [pid 5085] <... write resumed>) = 16777216 [pid 5086] openat(AT_FDCWD, "/dev/loop3", O_RDWR) = 4 [pid 5086] ioctl(4, LOOP_SET_FD, 3 [pid 5091] <... ioctl resumed>) = 0 [pid 5091] close(3) = 0 [pid 5091] mkdir("./file0", 0777) = 0 [pid 5091] mount("/dev/loop5", "./file0", "jfs", MS_REC, "" [pid 5090] <... ioctl resumed>) = 0 [pid 5090] close(3) = 0 [pid 5090] mkdir("./file0", 0777) = 0 [pid 5090] mount("/dev/loop0", "./file0", "jfs", MS_REC, "" [pid 5085] munmap(0x7f5b1773d000, 16777216) = 0 [pid 5091] <... mount resumed>) = 0 [pid 5091] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5090] <... mount resumed>) = 0 [pid 5092] <... write resumed>) = 16777216 [pid 5091] <... openat resumed>) = 3 [pid 5090] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5088] <... write resumed>) = 16777216 [pid 5086] <... ioctl resumed>) = 0 [pid 5085] openat(AT_FDCWD, "/dev/loop4", O_RDWR [pid 5092] munmap(0x7f5b1773d000, 16777216 [pid 5091] chdir("./file0" [pid 5090] <... openat resumed>) = 3 [pid 5086] close(3 [pid 5091] <... chdir resumed>) = 0 [pid 5090] chdir("./file0" [pid 5088] munmap(0x7f5b1773d000, 16777216 [pid 5085] <... openat resumed>) = 4 [pid 5092] <... munmap resumed>) = 0 [pid 5091] ioctl(4, LOOP_CLR_FD [pid 5090] <... chdir resumed>) = 0 [pid 5086] <... close resumed>) = 0 syzkaller login: [ 56.871441][ T5091] loop5: detected capacity change from 0 to 32768 [ 56.882608][ T5090] loop0: detected capacity change from 0 to 32768 [ 56.893394][ T5086] loop3: detected capacity change from 0 to 32768 [pid 5085] ioctl(4, LOOP_SET_FD, 3 [pid 5092] openat(AT_FDCWD, "/dev/loop2", O_RDWR [pid 5091] <... ioctl resumed>) = 0 [pid 5090] ioctl(4, LOOP_CLR_FD [pid 5088] <... munmap resumed>) = 0 [pid 5086] mkdir("./file0", 0777 [pid 5092] <... openat resumed>) = 4 [pid 5091] close(4 [pid 5090] <... ioctl resumed>) = 0 [pid 5088] openat(AT_FDCWD, "/dev/loop1", O_RDWR [pid 5086] <... mkdir resumed>) = 0 [pid 5085] <... ioctl resumed>) = 0 [pid 5092] ioctl(4, LOOP_SET_FD, 3 [pid 5091] <... close resumed>) = 0 [pid 5090] close(4 [pid 5086] mount("/dev/loop3", "./file0", "jfs", MS_REC, "" [pid 5085] close(3 [pid 5091] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5090] <... close resumed>) = 0 [pid 5088] <... openat resumed>) = 4 [pid 5086] <... mount resumed>) = 0 [pid 5085] <... close resumed>) = 0 [pid 5091] <... futex resumed>) = 1 [pid 5090] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5086] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5092] <... ioctl resumed>) = 0 [pid 5091] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5090] <... futex resumed>) = 1 [pid 5086] <... openat resumed>) = 3 [pid 5085] mkdir("./file0", 0777 [pid 5092] close(3 [pid 5090] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5086] chdir("./file0" [pid 5085] <... mkdir resumed>) = 0 [pid 5081] <... futex resumed>) = 0 [pid 5083] <... futex resumed>) = 0 [pid 5092] <... close resumed>) = 0 [pid 5086] <... chdir resumed>) = 0 [pid 5085] mount("/dev/loop4", "./file0", "jfs", MS_REC, "" [pid 5083] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5081] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5092] mkdir("./file0", 0777 [pid 5091] <... futex resumed>) = 0 [pid 5090] <... futex resumed>) = 0 [pid 5088] ioctl(4, LOOP_SET_FD, 3 [pid 5086] ioctl(4, LOOP_CLR_FD [pid 5085] <... mount resumed>) = 0 [pid 5083] <... futex resumed>) = 1 [pid 5081] <... futex resumed>) = 1 [pid 5092] <... mkdir resumed>) = 0 [pid 5091] open(".", O_RDONLY [pid 5090] open(".", O_RDONLY [pid 5086] <... ioctl resumed>) = 0 [pid 5085] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5083] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5092] mount("/dev/loop2", "./file0", "jfs", MS_REC, "" [pid 5091] <... open resumed>) = 4 [pid 5090] <... open resumed>) = 4 [pid 5086] close(4 [pid 5085] <... openat resumed>) = 3 [pid 5081] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5091] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5090] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5086] <... close resumed>) = 0 [pid 5085] chdir("./file0" [pid 5091] <... futex resumed>) = 0 [pid 5090] <... futex resumed>) = 0 [pid 5086] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5085] <... chdir resumed>) = 0 [pid 5091] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5090] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5086] <... futex resumed>) = 1 [pid 5085] ioctl(4, LOOP_CLR_FD [pid 5082] <... futex resumed>) = 0 [pid 5086] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5085] <... ioctl resumed>) = 0 [pid 5082] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5086] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5085] close(4 [pid 5082] <... futex resumed>) = 0 [pid 5086] open(".", O_RDONLY [pid 5085] <... close resumed>) = 0 [pid 5082] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5086] <... open resumed>) = 4 [pid 5085] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5086] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5085] <... futex resumed>) = 1 [pid 5080] <... futex resumed>) = 0 [pid 5086] <... futex resumed>) = 1 [pid 5085] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5082] <... futex resumed>) = 0 [pid 5080] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5086] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5085] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5082] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5080] <... futex resumed>) = 0 [pid 5086] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5085] open(".", O_RDONLY [pid 5082] <... futex resumed>) = 0 [pid 5080] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5086] open_by_handle_at(4, {handle_bytes=8, handle_type=2, f_handle="\x0e\x00\x00\x00\x00\x00\x00\x00"}, O_RDONLY [pid 5085] <... open resumed>) = 4 [pid 5082] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5085] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5083] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5081] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5085] <... futex resumed>) = 1 [pid 5080] <... futex resumed>) = 0 [pid 5085] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5080] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5085] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5080] <... futex resumed>) = 0 [pid 5085] open_by_handle_at(4, {handle_bytes=8, handle_type=2, f_handle="\x0e\x00\x00\x00\x00\x00\x00\x00"}, O_RDONLY [pid 5080] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5088] <... ioctl resumed>) = 0 [pid 5088] close(3) = 0 [pid 5088] mkdir("./file0", 0777 [pid 5083] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [ 56.933196][ T5085] loop4: detected capacity change from 0 to 32768 [ 56.942441][ T5092] loop2: detected capacity change from 0 to 32768 [ 56.966483][ T5088] loop1: detected capacity change from 0 to 32768 [ 56.974301][ T5086] ERROR: (device loop3): diRead: i_ino != di_number [ 56.974301][ T5086] [pid 5081] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5091] <... futex resumed>) = 0 [pid 5090] <... futex resumed>) = 0 [pid 5083] <... futex resumed>) = 1 [pid 5081] <... futex resumed>) = 1 [pid 5091] open_by_handle_at(4, {handle_bytes=8, handle_type=2, f_handle="\x0e\x00\x00\x00\x00\x00\x00\x00"}, O_RDONLY [pid 5090] open_by_handle_at(4, {handle_bytes=8, handle_type=2, f_handle="\x0e\x00\x00\x00\x00\x00\x00\x00"}, O_RDONLY [pid 5083] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5082] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5081] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5092] <... mount resumed>) = 0 [pid 5082] futex(0x7f5b1fc3c7bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5092] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY [pid 5082] <... futex resumed>) = 0 [pid 5092] <... openat resumed>) = 3 [pid 5082] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5092] chdir("./file0" [pid 5088] <... mkdir resumed>) = 0 [pid 5082] <... mmap resumed>) = 0x7f5b1871c000 [pid 5092] <... chdir resumed>) = 0 [pid 5088] mount("/dev/loop1", "./file0", "jfs", MS_REC, "" [pid 5082] mprotect(0x7f5b1871d000, 131072, PROT_READ|PROT_WRITE [pid 5092] ioctl(4, LOOP_CLR_FD [pid 5082] <... mprotect resumed>) = 0 [pid 5092] <... ioctl resumed>) = 0 [pid 5082] clone(child_stack=0x7f5b1873c3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5092] close(4) = 0 [pid 5082] <... clone resumed>, parent_tid=[5094], tls=0x7f5b1873c700, child_tidptr=0x7f5b1873c9d0) = 5094 [pid 5092] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5082] futex(0x7f5b1fc3c7b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5092] <... futex resumed>) = 1 [pid 5089] <... futex resumed>) = 0 [pid 5082] <... futex resumed>) = 0 [ 56.987944][ T5085] ERROR: (device loop4): diRead: i_ino != di_number [ 56.987944][ T5085] [ 56.999924][ T5086] ERROR: (device loop3): remounting filesystem as read-only [ 57.007409][ T5090] ERROR: (device loop0): diRead: i_ino != di_number [ 57.007409][ T5090] [ 57.016308][ T5091] ERROR: (device loop5): diRead: i_ino != di_number [ 57.016308][ T5091] [pid 5092] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5089] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5082] futex(0x7f5b1fc3c7bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5092] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5080] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5092] open(".", O_RDONLY [pid 5080] futex(0x7f5b1fc3c7bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5092] <... open resumed>) = 4 [pid 5080] <... futex resumed>) = 0 [pid 5092] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5080] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0./strace-static-x86_64: Process 5094 attached [pid 5092] <... futex resumed>) = 0 [pid 5080] <... mmap resumed>) = 0x7f5b1871c000 [pid 5094] set_robust_list(0x7f5b1873c9e0, 24 [pid 5092] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5080] mprotect(0x7f5b1871d000, 131072, PROT_READ|PROT_WRITE [pid 5094] <... set_robust_list resumed>) = 0 [pid 5080] <... mprotect resumed>) = 0 [pid 5094] creat("./bus", 000 [pid 5080] clone(child_stack=0x7f5b1873c3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5094] <... creat resumed>) = 5 [pid 5080] <... clone resumed>, parent_tid=[5095], tls=0x7f5b1873c700, child_tidptr=0x7f5b1873c9d0) = 5095 [pid 5080] futex(0x7f5b1fc3c7b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5080] futex(0x7f5b1fc3c7bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5094] futex(0x7f5b1fc3c7bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5082] <... futex resumed>) = 0 [pid 5082] futex(0x7f5b1fc3c7b8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5082] futex(0x7f5b1fc3c7bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5094] <... futex resumed>) = 1 [pid 5094] ftruncate(5, 2048 [pid 5092] <... futex resumed>) = 0 [pid 5089] <... futex resumed>) = 1 [pid 5092] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5089] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000}) = -1 EAGAIN (Resource temporarily unavailable) [pid 5094] <... ftruncate resumed>) = 0 [pid 5089] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5094] futex(0x7f5b1fc3c7bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5082] <... futex resumed>) = 0 [pid 5082] futex(0x7f5b1fc3c7b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5094] <... futex resumed>) = 1 [pid 5082] <... futex resumed>) = 0 [pid 5094] open("./bus", O_RDONLY|O_CREAT|O_NOCTTY|O_APPEND|O_NONBLOCK|O_SYNC|O_DIRECT|O_NOFOLLOW, 0511 [ 57.035863][ T5090] ERROR: (device loop0): remounting filesystem as read-only [ 57.043383][ T5091] ERROR: (device loop5): remounting filesystem as read-only [ 57.044313][ T5085] ERROR: (device loop4): remounting filesystem as read-only [ 57.064319][ T27] audit: type=1804 audit(1675062866.058:2): pid=5094 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=invalid_pcr cause=open_writers comm="syz-executor296" name="/root/syzkaller.SUC4n8/0/file0/bus" dev="loop3" ino=7 res=1 errno=0 [pid 5082] futex(0x7f5b1fc3c7bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5092] <... futex resumed>) = 0 [pid 5089] <... futex resumed>) = 1 [pid 5086] <... open_by_handle_at resumed>) = -1 ESTALE (Stale file handle) [pid 5094] <... open resumed>) = 6 [pid 5092] open_by_handle_at(4, {handle_bytes=8, handle_type=2, f_handle="\x0e\x00\x00\x00\x00\x00\x00\x00"}, O_RDONLY [pid 5088] <... mount resumed>) = 0 [pid 5088] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 5088] chdir("./file0") = 0 [pid 5088] ioctl(4, LOOP_CLR_FD [pid 5094] futex(0x7f5b1fc3c7bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5088] <... ioctl resumed>) = 0 [pid 5094] <... futex resumed>) = 1 [pid 5088] close(4 [pid 5082] <... futex resumed>) = 0 [pid 5094] futex(0x7f5b1fc3c7b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5088] <... close resumed>) = 0 [pid 5082] futex(0x7f5b1fc3c7b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5094] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5088] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5082] <... futex resumed>) = 0 [pid 5094] sendfile(5, 6, NULL, 145139829833722 [pid 5088] <... futex resumed>) = 1 [pid 5084] <... futex resumed>) = 0 [pid 5082] futex(0x7f5b1fc3c7bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5091] <... open_by_handle_at resumed>) = -1 ESTALE (Stale file handle) [pid 5090] <... open_by_handle_at resumed>) = -1 ESTALE (Stale file handle) [pid 5088] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5084] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5091] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5090] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5088] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5084] <... futex resumed>) = 0 [pid 5091] <... futex resumed>) = 1 [pid 5090] <... futex resumed>) = 1 [pid 5088] open(".", O_RDONLY [pid 5084] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5091] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5090] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5088] <... open resumed>) = 4 [pid 5088] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5084] <... futex resumed>) = 0 [pid 5088] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5084] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5088] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5084] <... futex resumed>) = 0 [pid 5088] open_by_handle_at(4, {handle_bytes=8, handle_type=2, f_handle="\x0e\x00\x00\x00\x00\x00\x00\x00"}, O_RDONLY [pid 5084] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5085] <... open_by_handle_at resumed>) = -1 ESTALE (Stale file handle) [pid 5085] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5085] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL./strace-static-x86_64: Process 5095 attached [pid 5095] set_robust_list(0x7f5b1873c9e0, 24) = 0 [pid 5095] creat("./bus", 000) = -1 EROFS (Read-only file system) [pid 5095] futex(0x7f5b1fc3c7bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5080] <... futex resumed>) = 0 [pid 5080] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5080] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5085] <... futex resumed>) = 0 [pid 5085] ftruncate(-1, 2048) = -1 EBADF (Bad file descriptor) [pid 5085] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5080] <... futex resumed>) = 0 [pid 5080] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5080] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5085] <... futex resumed>) = 1 [pid 5085] open("./bus", O_RDONLY|O_CREAT|O_NOCTTY|O_APPEND|O_NONBLOCK|O_SYNC|O_DIRECT|O_NOFOLLOW, 0511) = -1 EROFS (Read-only file system) [pid 5085] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5083] <... futex resumed>) = 0 [pid 5081] <... futex resumed>) = 0 [pid 5083] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5081] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5091] <... futex resumed>) = 0 [pid 5090] <... futex resumed>) = 0 [pid 5083] <... futex resumed>) = 1 [pid 5081] <... futex resumed>) = 1 [pid 5091] creat("./bus", 000 [pid 5090] creat("./bus", 000 [pid 5083] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5081] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5091] <... creat resumed>) = -1 EROFS (Read-only file system) [pid 5090] <... creat resumed>) = -1 EROFS (Read-only file system) [pid 5091] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5090] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5091] <... futex resumed>) = 1 [pid 5090] <... futex resumed>) = 1 [pid 5083] <... futex resumed>) = 0 [pid 5081] <... futex resumed>) = 0 [pid 5091] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5090] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5083] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5081] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5091] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5090] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5083] <... futex resumed>) = 0 [pid 5081] <... futex resumed>) = 0 [pid 5091] ftruncate(-1, 2048 [pid 5090] ftruncate(-1, 2048 [pid 5083] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5081] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5091] <... ftruncate resumed>) = -1 EBADF (Bad file descriptor) [pid 5090] <... ftruncate resumed>) = -1 EBADF (Bad file descriptor) [pid 5091] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5090] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5091] <... futex resumed>) = 1 [pid 5090] <... futex resumed>) = 1 [pid 5083] <... futex resumed>) = 0 [pid 5081] <... futex resumed>) = 0 [pid 5091] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5090] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5083] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5081] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5091] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5090] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5083] <... futex resumed>) = 0 [pid 5081] <... futex resumed>) = 0 [pid 5091] open("./bus", O_RDONLY|O_CREAT|O_NOCTTY|O_APPEND|O_NONBLOCK|O_SYNC|O_DIRECT|O_NOFOLLOW, 0511 [pid 5090] open("./bus", O_RDONLY|O_CREAT|O_NOCTTY|O_APPEND|O_NONBLOCK|O_SYNC|O_DIRECT|O_NOFOLLOW, 0511 [pid 5089] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5083] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5081] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5095] <... futex resumed>) = 1 [pid 5094] <... sendfile resumed>) = 2048 [pid 5091] <... open resumed>) = -1 EROFS (Read-only file system) [pid 5090] <... open resumed>) = -1 EROFS (Read-only file system) [pid 5086] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5085] <... futex resumed>) = 1 [pid 5080] <... futex resumed>) = 0 [pid 5095] futex(0x7f5b1fc3c7b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5094] futex(0x7f5b1fc3c7bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5091] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5090] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5085] sendfile(-1, -1, NULL, 145139829833722 [pid 5080] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5094] <... futex resumed>) = 1 [pid 5091] <... futex resumed>) = 1 [pid 5090] <... futex resumed>) = 1 [pid 5085] <... sendfile resumed>) = -1 EBADF (Bad file descriptor) [pid 5083] <... futex resumed>) = 0 [pid 5082] <... futex resumed>) = 0 [pid 5081] <... futex resumed>) = 0 [pid 5080] <... futex resumed>) = 0 [pid 5094] futex(0x7f5b1fc3c7b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5091] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5090] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5085] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5083] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5082] exit_group(0 [pid 5081] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5080] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5094] <... futex resumed>) = ? [pid 5091] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5090] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5085] <... futex resumed>) = 0 [pid 5083] <... futex resumed>) = 0 [pid 5082] <... exit_group resumed>) = ? [pid 5081] <... futex resumed>) = 0 [pid 5080] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5094] +++ exited with 0 +++ [pid 5091] sendfile(-1, -1, NULL, 145139829833722 [pid 5090] sendfile(-1, -1, NULL, 145139829833722 [pid 5086] <... futex resumed>) = ? [pid 5085] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5084] <... futex resumed>) = -1 ETIMEDOUT (Connection timed out) [pid 5083] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5081] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5080] exit_group(0 [pid 5095] <... futex resumed>) = ? [pid 5091] <... sendfile resumed>) = -1 EBADF (Bad file descriptor) [pid 5090] <... sendfile resumed>) = -1 EBADF (Bad file descriptor) [pid 5085] <... futex resumed>) = ? [pid 5084] futex(0x7f5b1fc3c7bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5080] <... exit_group resumed>) = ? [pid 5095] +++ exited with 0 +++ [pid 5091] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5090] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5086] +++ exited with 0 +++ [pid 5085] +++ exited with 0 +++ [pid 5084] <... futex resumed>) = 0 [pid 5082] +++ exited with 0 +++ [pid 5080] +++ exited with 0 +++ [pid 5091] <... futex resumed>) = 1 [pid 5090] <... futex resumed>) = 1 [pid 5084] mmap(NULL, 135168, PROT_NONE, MAP_PRIVATE|MAP_ANONYMOUS|MAP_STACK, -1, 0 [pid 5083] <... futex resumed>) = 0 [pid 5081] <... futex resumed>) = 0 [pid 5091] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5090] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5084] <... mmap resumed>) = 0x7f5b1871c000 [pid 5083] exit_group(0 [pid 5081] exit_group(0 [pid 5091] <... futex resumed>) = ? [pid 5090] <... futex resumed>) = ? [pid 5084] mprotect(0x7f5b1871d000, 131072, PROT_READ|PROT_WRITE [pid 5083] <... exit_group resumed>) = ? [ 57.087936][ T5092] ERROR: (device loop2): diRead: i_ino != di_number [ 57.087936][ T5092] [ 57.098204][ T5088] ERROR: (device loop1): diRead: i_ino != di_number [ 57.098204][ T5088] [ 57.112165][ T5092] ERROR: (device loop2): remounting filesystem as read-only [ 57.120245][ T5088] ERROR: (device loop1): remounting filesystem as read-only [pid 5081] <... exit_group resumed>) = ? [pid 5077] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5082, si_uid=0, si_status=0, si_utime=10 /* 0.10 s */, si_stime=22 /* 0.22 s */} --- [pid 5078] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5080, si_uid=0, si_status=0, si_utime=7 /* 0.07 s */, si_stime=19 /* 0.19 s */} --- [pid 5091] +++ exited with 0 +++ [pid 5090] +++ exited with 0 +++ [pid 5084] <... mprotect resumed>) = 0 [pid 5083] +++ exited with 0 +++ [pid 5081] +++ exited with 0 +++ [pid 5084] clone(child_stack=0x7f5b1873c3f0, flags=CLONE_VM|CLONE_FS|CLONE_FILES|CLONE_SIGHAND|CLONE_THREAD|CLONE_SYSVSEM|CLONE_SETTLS|CLONE_PARENT_SETTID|CLONE_CHILD_CLEARTID [pid 5079] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5081, si_uid=0, si_status=0, si_utime=5 /* 0.05 s */, si_stime=23 /* 0.23 s */} --- [pid 5084] <... clone resumed>, parent_tid=[5096], tls=0x7f5b1873c700, child_tidptr=0x7f5b1873c9d0) = 5096 [pid 5079] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5084] futex(0x7f5b1fc3c7b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5079] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5084] <... futex resumed>) = 0 [pid 5079] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5084] futex(0x7f5b1fc3c7bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5079] <... openat resumed>) = 3 [pid 5079] fstat(3, {st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5079] getdents64(3, 0x55555665d620 /* 4 entries */, 32768) = 112 [pid 5079] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [pid 5079] lstat("./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 5079] unlink("./0/binderfs") = 0 [pid 5079] umount2("./0/file0", MNT_DETACH|UMOUNT_NOFOLLOW./strace-static-x86_64: Process 5096 attached [pid 5096] set_robust_list(0x7f5b1873c9e0, 24) = 0 [pid 5096] creat("./bus", 000) = 5 [pid 5092] <... open_by_handle_at resumed>) = -1 ESTALE (Stale file handle) [pid 5092] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5092] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5096] futex(0x7f5b1fc3c7bc, FUTEX_WAKE_PRIVATE, 1000000 [pid 5088] <... open_by_handle_at resumed>) = -1 ESTALE (Stale file handle) [pid 5084] <... futex resumed>) = 0 [pid 5084] futex(0x7f5b1fc3c7b8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5096] <... futex resumed>) = 1 [pid 5088] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5084] <... futex resumed>) = 0 [pid 5096] ftruncate(5, 2048 [pid 5088] <... futex resumed>) = 0 [pid 5084] futex(0x7f5b1fc3c7bc, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5096] <... ftruncate resumed>) = 0 [pid 5088] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5096] futex(0x7f5b1fc3c7bc, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5084] <... futex resumed>) = 0 [pid 5096] futex(0x7f5b1fc3c7b8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5084] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5088] <... futex resumed>) = 0 [pid 5084] <... futex resumed>) = 1 [pid 5088] open("./bus", O_RDONLY|O_CREAT|O_NOCTTY|O_APPEND|O_NONBLOCK|O_SYNC|O_DIRECT|O_NOFOLLOW, 0511 [pid 5084] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5088] <... open resumed>) = 6 [pid 5088] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000) = 1 [pid 5084] <... futex resumed>) = 0 [pid 5088] sendfile(5, 6, NULL, 145139829833722 [pid 5084] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5084] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5089] <... futex resumed>) = 0 [pid 5078] restart_syscall(<... resuming interrupted clone ...> [pid 5077] restart_syscall(<... resuming interrupted clone ...> [pid 5089] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5078] <... restart_syscall resumed>) = 0 [pid 5077] <... restart_syscall resumed>) = 0 [pid 5092] <... futex resumed>) = 0 [pid 5089] <... futex resumed>) = 1 [pid 5074] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5083, si_uid=0, si_status=0, si_utime=7 /* 0.07 s */, si_stime=24 /* 0.24 s */} --- [pid 5092] creat("./bus", 000 [pid 5089] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5088] <... sendfile resumed>) = 2048 [pid 5092] <... creat resumed>) = -1 EROFS (Read-only file system) [pid 5074] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5092] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5088] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5092] <... futex resumed>) = 1 [pid 5078] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5089] <... futex resumed>) = 0 [pid 5092] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5088] <... futex resumed>) = 1 [pid 5084] <... futex resumed>) = 0 [pid 5078] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5077] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5074] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5092] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [ 57.143129][ T27] audit: type=1800 audit(1675062866.058:3): pid=5094 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz-executor296" name="bus" dev="loop3" ino=7 res=0 errno=0 [pid 5089] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5088] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5084] exit_group(0 [pid 5096] <... futex resumed>) = ? [pid 5092] ftruncate(-1, 2048 [pid 5088] <... futex resumed>) = ? [pid 5084] <... exit_group resumed>) = ? [pid 5078] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5077] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5074] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5096] +++ exited with 0 +++ [pid 5092] <... ftruncate resumed>) = -1 EBADF (Bad file descriptor) [pid 5088] +++ exited with 0 +++ [pid 5084] +++ exited with 0 +++ [pid 5092] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [pid 5092] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL) = 0 [pid 5089] <... futex resumed>) = 1 [pid 5092] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5078] <... openat resumed>) = 3 [pid 5077] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5075] --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5084, si_uid=0, si_status=0, si_utime=9 /* 0.09 s */, si_stime=17 /* 0.17 s */} --- [pid 5074] <... openat resumed>) = 3 [pid 5077] <... openat resumed>) = 3 [pid 5089] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5078] fstat(3, [pid 5074] fstat(3, [pid 5089] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5074] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5089] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5078] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5089] <... futex resumed>) = 1 [pid 5077] fstat(3, [pid 5092] <... futex resumed>) = 0 [pid 5074] getdents64(3, [pid 5089] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5092] open("./bus", O_RDONLY|O_CREAT|O_NOCTTY|O_APPEND|O_NONBLOCK|O_SYNC|O_DIRECT|O_NOFOLLOW, 0511 [pid 5078] getdents64(3, [pid 5077] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5075] umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5092] <... open resumed>) = -1 EROFS (Read-only file system) [pid 5078] <... getdents64 resumed>0x55555665d620 /* 4 entries */, 32768) = 112 [pid 5077] getdents64(3, [pid 5092] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000 [pid 5075] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5074] <... getdents64 resumed>0x55555665d620 /* 4 entries */, 32768) = 112 [pid 5092] <... futex resumed>) = 1 [pid 5089] <... futex resumed>) = 0 [pid 5078] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5077] <... getdents64 resumed>0x55555665d620 /* 4 entries */, 32768) = 112 [pid 5075] openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY [pid 5092] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5089] futex(0x7f5b1fc3c7a8, FUTEX_WAKE_PRIVATE, 1000000 [pid 5074] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5075] <... openat resumed>) = 3 [pid 5092] <... futex resumed>) = 0 [pid 5089] <... futex resumed>) = 1 [pid 5074] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5092] sendfile(-1, -1, NULL, 145139829833722 [pid 5078] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5077] umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW [pid 5075] fstat(3, [pid 5092] <... sendfile resumed>) = -1 EBADF (Bad file descriptor) [pid 5092] futex(0x7f5b1fc3c7ac, FUTEX_WAKE_PRIVATE, 1000000) = 0 [ 57.185087][ T27] audit: type=1804 audit(1675062866.158:4): pid=5088 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=invalid_pcr cause=open_writers comm="syz-executor296" name="/root/syzkaller.pIdYMV/0/file0/bus" dev="loop1" ino=7 res=1 errno=0 [pid 5092] futex(0x7f5b1fc3c7a8, FUTEX_WAIT_PRIVATE, 0, NULL [pid 5089] futex(0x7f5b1fc3c7ac, FUTEX_WAIT_PRIVATE, 0, {tv_sec=0, tv_nsec=50000000} [pid 5078] lstat("./0/binderfs", [pid 5077] <... umount2 resumed>) = -1 EINVAL (Invalid argument) [pid 5075] <... fstat resumed>{st_mode=S_IFDIR|0700, st_size=4096, ...}) = 0 [pid 5074] lstat("./0/binderfs", [pid 5089] <... futex resumed>) = -1 EAGAIN (Resource temporarily unavailable) [pid 5078] <... lstat resumed>{st_mode=S_IFLNK|0777, st_size=13, ...}) = 0 [pid 5077] lstat("./0/binderfs",