./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor226250827 <...> Warning: Permanently added '10.128.0.103' (ED25519) to the list of known hosts. execve("./syz-executor226250827", ["./syz-executor226250827"], 0x7ffe03ac4370 /* 10 vars */) = 0 brk(NULL) = 0x555555994000 brk(0x555555994d00) = 0x555555994d00 arch_prctl(ARCH_SET_FS, 0x555555994380) = 0 set_tid_address(0x555555994650) = 5006 set_robust_list(0x555555994660, 24) = 0 rseq(0x555555994ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor226250827", 4096) = 27 getrandom("\xa2\x86\x29\xcd\x53\x86\xcf\x29", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555555994d00 brk(0x5555559b5d00) = 0x5555559b5d00 brk(0x5555559b6000) = 0x5555559b6000 mprotect(0x7fa1cb710000, 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 getpid() = 5006 openat(AT_FDCWD, "/sys/kernel/debug/x86/nmi_longest_ns", O_WRONLY|O_CLOEXEC) = 3 write(3, "10000000000", 11) = 11 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/hung_task_check_interval_secs", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) newfstatat(1, "", {st_mode=S_IFIFO|0600, st_size=0, ...}, AT_EMPTY_PATH) = 0 openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_kallsyms", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/proc/sys/net/core/bpf_jit_harden", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/proc/sys/kernel/kptr_restrict", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/softlockup_all_cpu_backtrace", O_WRONLY|O_CLOEXEC) = -1 ENOENT (No such file or directory) openat(AT_FDCWD, "/proc/sys/fs/mount-max", O_WRONLY|O_CLOEXEC) = 3 write(3, "100", 3) = 3 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_dump_tasks", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/debug/exception-trace", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/printk", O_WRONLY|O_CLOEXEC) = 3 write(3, "7 4 1 3", 7) = 7 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/keys/gc_delay", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/vm/oom_kill_allocating_task", O_WRONLY|O_CLOEXEC) = 3 write(3, "1", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/ctrl-alt-del", O_WRONLY|O_CLOEXEC) = 3 write(3, "0", 1) = 1 close(3) = 0 openat(AT_FDCWD, "/proc/sys/kernel/cad_pid", O_WRONLY|O_CLOEXEC) = 3 write(3, "5006", 4) = 4 close(3) = 0 mkdir("./syzkaller.TbFq8K", 0700) = 0 chmod("./syzkaller.TbFq8K", 0777) = 0 chdir("./syzkaller.TbFq8K") = 0 mkdir("./0", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x555555994650) = 5007 ./strace-static-x86_64: Process 5007 attached [pid 5007] set_robust_list(0x555555994660, 24) = 0 [pid 5007] chdir("./0") = 0 [pid 5007] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5007] setpgid(0, 0) = 0 [pid 5007] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5007] write(3, "1000", 4) = 4 [pid 5007] close(3) = 0 [pid 5007] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5007] memfd_create("syzkaller", 0) = 3 [pid 5007] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fa1c325d000 [pid 5007] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288) = 524288 [pid 5007] munmap(0x7fa1c325d000, 138412032) = 0 [pid 5007] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5007] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5007] close(3) = 0 [pid 5007] mkdir("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 0777) = 0 [pid 5007] mount("/dev/loop0", "./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "hfsplus", MS_SYNCHRONOUS|MS_NOATIME|MS_NODIRATIME|MS_POSIXACL, "") = 0 [pid 5007] openat(AT_FDCWD, "./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", O_RDONLY|O_DIRECTORY) = 3 [pid 5007] chdir("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 [pid 5007] ioctl(4, LOOP_CLR_FD) = 0 [pid 5007] close(4) = 0 [pid 5007] mknod("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000) = 0 [pid 5007] link("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "./bus") = 0 [ 136.535657][ T5007] loop0: detected capacity change from 0 to 1024 write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/net/core/bpf_jit_kallsyms failed: No such file or directory write to /proc/sys/net/core/bpf_jit_harden failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory [pid 5007] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\nwrite to /"..., 335) = 335 [pid 5007] exit_group(0) = ? [pid 5007] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5007, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./0", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555996700 /* 4 entries */, 32768) = 352 umount2("./0/file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", MNT_DETACH|UMOUNT_NOFOLLOW) = 0 umount2("./0/file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0/file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55555599e740 /* 2 entries */, 32768) = 48 getdents64(4, 0x55555599e740 /* 0 entries */, 32768) = 0 close(4) = 0 rmdir("./0/file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 umount2("./0/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 136.654907][ T5003] ===================================================== [ 136.663071][ T5003] BUG: KMSAN: kernel-infoleak in _copy_to_iter+0x364/0x2520 [ 136.670674][ T5003] _copy_to_iter+0x364/0x2520 [ 136.675509][ T5003] copy_page_to_iter+0x419/0x870 [ 136.680659][ T5003] filemap_read+0xc00/0x14d0 [ 136.685427][ T5003] blkdev_read_iter+0x6c0/0x8e0 [ 136.690477][ T5003] vfs_read+0x8f6/0xe00 [ 136.694902][ T5003] ksys_read+0x20f/0x4c0 [ 136.699280][ T5003] __x64_sys_read+0x93/0xd0 newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/binderfs") = 0 getdents64(3, 0x555555996700 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./0") = 0 mkdir("./1", 0777) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5008 attached , child_tidptr=0x555555994650) = 5008 [pid 5008] set_robust_list(0x555555994660, 24) = 0 [pid 5008] chdir("./1") = 0 [pid 5008] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5008] setpgid(0, 0) = 0 [pid 5008] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5008] write(3, "1000", 4) = 4 [pid 5008] close(3) = 0 [pid 5008] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5008] memfd_create("syzkaller", 0) = 3 [pid 5008] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fa1c325d000 [pid 5008] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288) = 524288 [pid 5008] munmap(0x7fa1c325d000, 138412032) = 0 [pid 5008] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 136.703991][ T5003] do_syscall_64+0x44/0x110 [ 136.708682][ T5003] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 136.714901][ T5003] [ 136.717305][ T5003] Uninit was stored to memory at: [ 136.722635][ T5003] _copy_to_iter+0xe41/0x2520 [ 136.727464][ T5003] copy_page_to_iter+0x419/0x870 [ 136.732648][ T5003] shmem_file_read_iter+0xa0a/0x12b0 [ 136.739251][ T5003] do_iter_read+0xd21/0x1380 [ 136.744200][ T5003] vfs_iter_read+0x8e/0xe0 [ 136.749338][ T5003] loop_process_work+0x12e7/0x39d0 [pid 5008] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 5008] ioctl(4, LOOP_CLR_FD) = 0 [pid 5008] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 5008] close(4) = 0 [pid 5008] close(3) = 0 [pid 5008] mknod("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000) = 0 [ 136.754724][ T5003] loop_rootcg_workfn+0x2b/0x30 [ 136.761733][ T5003] process_scheduled_works+0x104e/0x1e70 [ 136.767751][ T5003] worker_thread+0xf45/0x1490 [ 136.772883][ T5003] kthread+0x3ed/0x540 [ 136.781089][ T5003] ret_from_fork+0x66/0x80 [ 136.785696][ T5003] ret_from_fork_asm+0x11/0x20 [ 136.790735][ T5003] [ 136.793134][ T5003] Uninit was stored to memory at: [ 136.799626][ T5003] copy_page_from_iter_atomic+0x12f1/0x2b70 [pid 5008] link("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "./bus") = 0 [pid 5008] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\nwrite to /"..., 335write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/net/core/bpf_jit_kallsyms failed: No such file or directory write to /proc/sys/net/core/bpf_jit_harden failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory ) = 335 [pid 5008] exit_group(0) = ? [pid 5008] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5008, si_uid=0, si_status=0, si_utime=0, si_stime=8 /* 0.08 s */} --- umount2("./1", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 [ 136.805842][ T5003] generic_perform_write+0x4ae/0xc40 [ 136.812774][ T5003] shmem_file_write_iter+0x2b5/0x2e0 [ 136.819689][ T5003] do_iter_write+0xceb/0x1340 [ 136.825185][ T5003] vfs_iter_write+0x8e/0xe0 [ 136.830414][ T5003] loop_process_work+0x20c3/0x39d0 [ 136.835832][ T5003] loop_rootcg_workfn+0x2b/0x30 [ 136.841341][ T5003] process_scheduled_works+0x104e/0x1e70 [ 136.847462][ T5003] worker_thread+0xf45/0x1490 getdents64(3, 0x555555996700 /* 5 entries */, 32768) = 376 umount2("./1/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/bus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./1/bus") = 0 umount2("./1/file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 136.852415][ T5003] kthread+0x3ed/0x540 [ 136.859492][ T5003] ret_from_fork+0x66/0x80 [ 136.864579][ T5003] ret_from_fork_asm+0x11/0x20 [ 136.870464][ T5003] [ 136.873604][ T5003] Uninit was stored to memory at: [ 136.879191][ T5003] hfsplus_bnode_write+0xee/0x2e0 [ 136.885121][ T5003] hfsplus_brec_insert+0xa9d/0x1400 [ 136.890479][ T5003] hfsplus_create_cat+0x1309/0x1810 [ 136.896090][ T5003] hfsplus_link+0x7d8/0xbf0 [ 136.900894][ T5003] vfs_link+0x936/0xb60 unlink("./1/file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa") = 0 umount2("./1/binderfs", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./1/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./1/binderfs") = 0 getdents64(3, 0x555555996700 /* 0 entries */, 32768) = 0 close(3) = 0 rmdir("./1") = 0 mkdir("./2", 0777) = 0 [ 136.905810][ T5003] do_linkat+0x6e1/0x1160 [ 136.910305][ T5003] __x64_sys_link+0xec/0x140 [ 136.915229][ T5003] do_syscall_64+0x44/0x110 [ 136.922692][ T5003] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 136.930203][ T5003] [ 136.932777][ T5003] Uninit was stored to memory at: [ 136.938612][ T5003] hfsplus_create_cat+0x11d1/0x1810 [ 136.944802][ T5003] hfsplus_link+0x7d8/0xbf0 [ 136.950690][ T5003] vfs_link+0x936/0xb60 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD./strace-static-x86_64: Process 5009 attached , child_tidptr=0x555555994650) = 5009 [pid 5009] set_robust_list(0x555555994660, 24) = 0 [pid 5009] chdir("./2") = 0 [pid 5009] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5009] setpgid(0, 0) = 0 [pid 5009] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5009] write(3, "1000", 4) = 4 [pid 5009] close(3) = 0 [ 136.955013][ T5003] do_linkat+0x6e1/0x1160 [ 136.960024][ T5003] __x64_sys_link+0xec/0x140 [ 136.965526][ T5003] do_syscall_64+0x44/0x110 [ 136.971974][ T5003] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 136.979168][ T5003] [ 136.981748][ T5003] Uninit was created at: [ 136.986227][ T5003] __alloc_pages+0x9a4/0xe00 [ 136.991665][ T5003] alloc_pages_mpol+0x62b/0x9d0 [ 136.996866][ T5003] alloc_pages+0x1be/0x1e0 [ 137.002176][ T5003] new_slab+0x421/0x1570 [pid 5009] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5009] memfd_create("syzkaller", 0) = 3 [pid 5009] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fa1c325d000 [pid 5009] write(3, "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"..., 524288) = 524288 [ 137.008490][ T5003] ___slab_alloc+0x13db/0x33d0 [ 137.014947][ T5003] kmem_cache_alloc_lru+0x552/0x970 [ 137.020810][ T5003] hfsplus_alloc_inode+0x5a/0xc0 [ 137.026138][ T5003] alloc_inode+0x83/0x440 [ 137.030780][ T5003] iget_locked+0x2dd/0xe80 [ 137.035361][ T5003] hfsplus_iget+0x59/0xaf0 [ 137.039948][ T5003] hfsplus_btree_open+0x13e/0x1d00 [ 137.046722][ T5003] hfsplus_fill_super+0x1113/0x26f0 [ 137.052208][ T5003] mount_bdev+0x3d7/0x560 [pid 5009] munmap(0x7fa1c325d000, 138412032) = 0 [pid 5009] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5009] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 5009] ioctl(4, LOOP_CLR_FD) = 0 [pid 5009] ioctl(4, LOOP_SET_FD, 3) = -1 EBUSY (Device or resource busy) [pid 5009] close(4) = 0 [ 137.056723][ T5003] hfsplus_mount+0x4d/0x60 [ 137.064016][ T5003] legacy_get_tree+0x110/0x290 [ 137.068981][ T5003] vfs_get_tree+0xa5/0x520 [ 137.073724][ T5003] do_new_mount+0x68d/0x1550 [ 137.079746][ T5003] path_mount+0x73d/0x1f20 [ 137.085687][ T5003] __se_sys_mount+0x725/0x810 [ 137.090696][ T5003] __x64_sys_mount+0xe4/0x140 [ 137.096962][ T5003] do_syscall_64+0x44/0x110 [ 137.101839][ T5003] entry_SYSCALL_64_after_hwframe+0x63/0x6b [pid 5009] close(3) = 0 [pid 5009] mknod("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", 000) = 0 [ 137.109166][ T5003] [ 137.111661][ T5003] Bytes 3258-3261 of 4096 are uninitialized [ 137.117661][ T5003] Memory access of size 4096 starts at ffff8881146b8000 [ 137.125052][ T5003] Data copied to user address 000055ff3929d058 [ 137.131435][ T5003] [ 137.133839][ T5003] CPU: 1 PID: 5003 Comm: udevd Not tainted 6.7.0-rc7-syzkaller #0 [ 137.143290][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [pid 5009] link("./file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", "./bus") = 0 [pid 5009] write(1, "write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory\nwrite to /"..., 335write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/net/core/bpf_jit_kallsyms failed: No such file or directory write to /proc/sys/net/core/bpf_jit_harden failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory ) = 335 [pid 5009] exit_group(0) = ? [pid 5009] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5009, si_uid=0, si_status=0, si_utime=0, si_stime=7 /* 0.07 s */} --- umount2("./2", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./2", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 3 newfstatat(3, "", {st_mode=S_IFDIR|0700, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(3, 0x555555996700 /* 5 entries */, 32768) = 376 [ 137.153633][ T5003] ===================================================== [ 137.161808][ T5003] Disabling lock debugging due to kernel taint [ 137.168334][ T5003] Kernel panic - not syncing: kmsan.panic set ... [ 137.174858][ T5003] CPU: 1 PID: 5003 Comm: udevd Tainted: G B 6.7.0-rc7-syzkaller #0 [ 137.184299][ T5003] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 [ 137.194497][ T5003] Call Trace: [ 137.197875][ T5003] [ 137.200901][ T5003] dump_stack_lvl+0x1bf/0x240 umount2("./2/bus", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/bus", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./2/bus") = 0 umount2("./2/file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", MNT_DETACH|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./2/file0aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 [ 137.205770][ T5003] dump_stack+0x1e/0x20 [ 137.210106][ T5003] panic+0x4de/0xc90 [ 137.214208][ T5003] ? add_taint+0x108/0x1a0 [ 137.218786][ T5003] kmsan_report+0x2d0/0x2d0 [ 137.223485][ T5003] ? kmsan_internal_check_memory+0x1ae/0x530 [ 137.229658][ T5003] ? kmsan_copy_to_user+0xd3/0xf0 [ 137.234873][ T5003] ? _copy_to_iter+0x364/0x2520 [ 137.239974][ T5003] ? copy_page_to_iter+0x419/0x870 [ 137.245268][ T5003] ? filemap_read+0xc00/0x14d0 [ 137.250220][ T5003] ? blkdev_read_iter+0x6c0/0x8e0 [ 137.255445][ T5003] ? vfs_read+0x8f6/0xe00 [ 137.259966][ T5003] ? ksys_read+0x20f/0x4c0 [ 137.264521][ T5003] ? __x64_sys_read+0x93/0xd0 [ 137.269339][ T5003] ? do_syscall_64+0x44/0x110 [ 137.274214][ T5003] ? entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 137.280473][ T5003] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 137.286484][ T5003] ? folio_wait_bit_common+0xb4/0xc50 [ 137.292048][ T5003] ? filemap_get_read_batch+0x50/0x1010 [ 137.297844][ T5003] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 137.303846][ T5003] ? filemap_get_read_batch+0x50/0x1010 [ 137.309603][ T5003] ? filter_irq_stacks+0x60/0x1a0 [ 137.314797][ T5003] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 137.320808][ T5003] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 137.326828][ T5003] kmsan_internal_check_memory+0x1ae/0x530 [ 137.332836][ T5003] kmsan_copy_to_user+0xd3/0xf0 [ 137.337868][ T5003] ? should_fail_usercopy+0x2e/0x40 [ 137.343272][ T5003] _copy_to_iter+0x364/0x2520 [ 137.348101][ T5003] ? kmsan_get_shadow_origin_ptr+0x38/0xa0 [ 137.354108][ T5003] ? filemap_get_pages+0x2b4f/0x2c90 [ 137.359604][ T5003] copy_page_to_iter+0x419/0x870 [ 137.364739][ T5003] filemap_read+0xc00/0x14d0 [ 137.369543][ T5003] ? kmsan_internal_set_shadow_origin+0x66/0xe0 [ 137.376026][ T5003] blkdev_read_iter+0x6c0/0x8e0 [ 137.381085][ T5003] ? blkdev_llseek+0x140/0x140 [ 137.386039][ T5003] vfs_read+0x8f6/0xe00 [ 137.390408][ T5003] ksys_read+0x20f/0x4c0 [ 137.394811][ T5003] __x64_sys_read+0x93/0xd0 [ 137.399474][ T5003] do_syscall_64+0x44/0x110 [ 137.404154][ T5003] entry_SYSCALL_64_after_hwframe+0x63/0x6b [ 137.410237][ T5003] RIP: 0033:0x7f8b8a716b6a [ 137.414772][ T5003] Code: 00 3d 00 00 41 00 75 0d 50 48 8d 3d 2d 08 0a 00 e8 ea 7d 01 00 31 c0 e9 07 ff ff ff 64 8b 04 25 18 00 00 00 85 c0 75 1b 0f 05 <48> 3d 00 f0 ff ff 76 6c 48 8b 15 8f a2 0d 00 f7 d8 64 89 02 48 83 [ 137.434563][ T5003] RSP: 002b:00007fff8c38ce38 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 137.443143][ T5003] RAX: ffffffffffffffda RBX: 0000000000018c00 RCX: 00007f8b8a716b6a [ 137.451255][ T5003] RDX: 0000000000002000 RSI: 000055ff3929cc58 RDI: 0000000000000009 [ 137.459533][ T5003] RBP: 0000000000002000 R08: 000055ff3929cc30 R09: 547b4c9e40d61692 [ 137.467644][ T5003] R10: 0000000000000211 R11: 0000000000000246 R12: 000055ff3929cc30 [ 137.475920][ T5003] R13: 000055ff3929cc48 R14: 000055ff39285458 R15: 000055ff39285400 [ 137.484047][ T5003] [ 137.487402][ T5003] Kernel Offset: disabled [ 137.491861][ T5003] Rebooting in 86400 seconds..