./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1564188414 <...> Warning: Permanently added '10.128.0.210' (ED25519) to the list of known hosts. execve("./syz-executor1564188414", ["./syz-executor1564188414"], 0x7fff25899b20 /* 10 vars */) = 0 brk(NULL) = 0x55558750a000 brk(0x55558750ad00) = 0x55558750ad00 arch_prctl(ARCH_SET_FS, 0x55558750a380) = 0 set_tid_address(0x55558750a650) = 5836 set_robust_list(0x55558750a660, 24) = 0 rseq(0x55558750aca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor1564188414", 4096) = 28 getrandom("\xb7\xce\x24\xa5\x3d\x76\x51\x7d", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558750ad00 brk(0x55558752bd00) = 0x55558752bd00 brk(0x55558752c000) = 0x55558752c000 mprotect(0x7fb7dac30000, 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 mkdir("./syzkaller.Gnbl3s", 0700) = 0 chmod("./syzkaller.Gnbl3s", 0777) = 0 chdir("./syzkaller.Gnbl3s") = 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./strace-static-x86_64: Process 5838 attached [pid 5838] set_robust_list(0x55558750a660, 24 [pid 5836] <... clone resumed>, child_tidptr=0x55558750a650) = 5838 [pid 5838] <... set_robust_list resumed>) = 0 [pid 5838] chdir("./0") = 0 [pid 5838] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5838] setpgid(0, 0) = 0 [pid 5838] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5838] write(3, "1000", 4) = 4 [pid 5838] close(3) = 0 [pid 5838] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5838] write(1, "executing program\n", 18executing program ) = 18 [pid 5838] memfd_create("syzkaller", 0) = 3 [pid 5838] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb7d2600000 [pid 5838] 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"..., 32768) = 32768 [pid 5838] munmap(0x7fb7d2600000, 138412032) = 0 [pid 5838] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5838] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5838] close(3) = 0 [pid 5838] close(4) = 0 [pid 5838] mkdir("./bus", 0777) = 0 [pid 5838] mount("/dev/loop0", "./bus", "minix", MS_REC, "") = 0 [pid 5838] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5838] chdir("./bus") = 0 [pid 5838] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 69.592365][ T5838] loop0: detected capacity change from 0 to 64 [pid 5838] truncate("./file2", 524288) = 0 [pid 5838] ioctl(-1, DRM_IOCTL_MODE_ATOMIC, 0) = -1 EBADF (Bad file descriptor) [pid 5838] unlink("./file1") = 0 [pid 5838] creat("./bus", 000) = -1 ENOSPC (No space left on device) [pid 5838] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists) [pid 5838] mkdirat(AT_FDCWD, "./file1", 000) = 0 [pid 5838] mkdir("./bus", 000) = 0 [ 69.642990][ T5838] Trying to free block not in datazone [ 69.671514][ T5838] Trying to free block not in datazone [ 69.677173][ T5838] minix_free_inode: bit 5 already cleared [pid 5838] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,") = 0 [pid 5838] chdir("./bus") = 0 [ 69.715720][ T5838] overlayfs: upper fs needs to support d_type. [ 69.725556][ T5838] overlayfs: upper fs does not support RENAME_WHITEOUT. [ 69.732675][ T5838] overlayfs: failed to set xattr on upper [ 69.738525][ T5838] overlayfs: ...falling back to redirect_dir=nofollow. [ 69.745385][ T5838] overlayfs: ...falling back to index=off. [ 69.751247][ T5838] overlayfs: ...falling back to uuid=null. [pid 5838] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_NOATIME|O_CLOEXEC, 000) = 4 [pid 5838] exit_group(0) = ? [pid 5838] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5838, si_uid=0, si_status=0, si_utime=0, si_stime=10 /* 0.10 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 69.774653][ T29] audit: type=1800 audit(1736043406.309:2): pid=5838 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz-executor156" name="bus" dev="overlay" ino=4 res=0 errno=0 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, 0x55558750b6f0 /* 4 entries */, 32768) = 104 umount2("./0/binderfs", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/binderfs", {st_mode=S_IFLNK|0777, st_size=13, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/binderfs") = 0 umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EBUSY (Device or resource busy) newfstatat(AT_FDCWD, "./0/bus", {st_mode=S_IFDIR|0755, st_size=512, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/bus", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EBUSY (Device or resource busy) openat(AT_FDCWD, "./0/bus", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0755, st_size=512, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x555587513730 /* 8 entries */, 32768) = 232 umount2("./0/bus/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/bus/file0", {st_mode=S_IFDIR|0755, st_size=256, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/bus/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0/bus/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 5 newfstatat(5, "", {st_mode=S_IFDIR|0755, st_size=256, ...}, AT_EMPTY_PATH) = 0 getdents64(5, 0x55558751b770 /* 4 entries */, 32768) = 104 umount2("./0/bus/file0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/bus/file0/file0", {st_mode=S_IFDIR|000, st_size=192, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/bus/file0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0/bus/file0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 6 newfstatat(6, "", {st_mode=S_IFDIR|000, st_size=192, ...}, AT_EMPTY_PATH) = 0 getdents64(6, 0x5555875237b0 /* 2 entries */, 32768) = 48 getdents64(6, 0x5555875237b0 /* 0 entries */, 32768) = 0 close(6) = 0 rmdir("./0/bus/file0/file0") = 0 umount2("\x2e\x2f\x30\x2f\x62\x75\x73\x2f\x66\x69\x6c\x65\x30\x2f\x66\x69\x96", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "\x2e\x2f\x30\x2f\x62\x75\x73\x2f\x66\x69\x6c\x65\x30\x2f\x66\x69\x96", {st_mode=S_IFREG|000, st_size=0, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("\x2e\x2f\x30\x2f\x62\x75\x73\x2f\x66\x69\x6c\x65\x30\x2f\x66\x69\x96") = 0 getdents64(5, 0x55558751b770 /* 0 entries */, 32768) = 0 close(5) = 0 [ 70.258236][ T5836] ------------[ cut here ]------------ [ 70.263861][ T5836] WARNING: CPU: 1 PID: 5836 at fs/inode.c:407 drop_nlink+0xc4/0x110 [ 70.272025][ T5836] Modules linked in: [ 70.275973][ T5836] CPU: 1 UID: 0 PID: 5836 Comm: syz-executor156 Not tainted 6.13.0-rc3-next-20241220-syzkaller #0 [ 70.286647][ T5836] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 70.296776][ T5836] RIP: 0010:drop_nlink+0xc4/0x110 [ 70.301915][ T5836] Code: bb 70 07 00 00 be 08 00 00 00 e8 87 15 e7 ff f0 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 4d 97 80 ff 90 <0f> 0b 90 eb 83 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 5c ff ff ff [ 70.321651][ T5836] RSP: 0018:ffffc9000413fd30 EFLAGS: 00010293 [ 70.327749][ T5836] RAX: ffffffff823e8cd3 RBX: 1ffff1100f2c5163 RCX: ffff888011a85a00 [ 70.335790][ T5836] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 70.343918][ T5836] RBP: 0000000000000000 R08: ffffffff823e8c53 R09: 1ffffffff203563e [ 70.351970][ T5836] R10: dffffc0000000000 R11: fffffbfff203563f R12: ffff888079628b18 [ 70.360037][ T5836] R13: ffff88807e553a70 R14: ffff888079628ad0 R15: dffffc0000000000 [ 70.368065][ T5836] FS: 000055558750a380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 [ 70.376992][ T5836] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.383661][ T5836] CR2: 0000555587523778 CR3: 0000000077b06000 CR4: 00000000003526f0 [ 70.391892][ T5836] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.400022][ T5836] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.408083][ T5836] Call Trace: [ 70.411377][ T5836] [ 70.414302][ T5836] ? __warn+0x165/0x4d0 [ 70.418527][ T5836] ? drop_nlink+0xc4/0x110 [ 70.422970][ T5836] ? report_bug+0x2b3/0x500 [ 70.427498][ T5836] ? drop_nlink+0xc4/0x110 [ 70.431979][ T5836] ? handle_bug+0x60/0x90 [ 70.436362][ T5836] ? exc_invalid_op+0x1a/0x50 [ 70.441113][ T5836] ? asm_exc_invalid_op+0x1a/0x20 [ 70.446158][ T5836] ? drop_nlink+0x43/0x110 [ 70.450657][ T5836] ? drop_nlink+0xc3/0x110 [ 70.455090][ T5836] ? drop_nlink+0xc4/0x110 [ 70.459584][ T5836] minix_rmdir+0xa5/0xc0 [ 70.463844][ T5836] vfs_rmdir+0x3a3/0x510 [ 70.468159][ T5836] do_rmdir+0x3b5/0x580 [ 70.472340][ T5836] ? __virt_addr_valid+0x183/0x530 [ 70.477493][ T5836] ? __pfx_do_rmdir+0x10/0x10 [ 70.482291][ T5836] ? getname_flags+0x1e3/0x540 [ 70.487076][ T5836] __x64_sys_rmdir+0x47/0x50 [ 70.491738][ T5836] do_syscall_64+0xf3/0x230 [ 70.496263][ T5836] ? clear_bhb_loop+0x35/0x90 [ 70.501152][ T5836] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 70.507080][ T5836] RIP: 0033:0x7fb7dabbbd87 [ 70.511563][ T5836] Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 54 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 70.531265][ T5836] RSP: 002b:00007ffdc83e5ee8 EFLAGS: 00000207 ORIG_RAX: 0000000000000054 [ 70.539738][ T5836] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb7dabbbd87 [ 70.547727][ T5836] RDX: 0000000000008890 RSI: 0000000000000000 RDI: 00007ffdc83e7090 [ 70.555869][ T5836] RBP: 0000000000000065 R08: 0000000000000000 R09: 0000000000000000 [ 70.563928][ T5836] R10: 0000000000000100 R11: 0000000000000207 R12: 00007ffdc83e7090 [ 70.571986][ T5836] R13: 000055558751b740 R14: 431bde82d7b634db R15: 00007ffdc83e9210 [ 70.580016][ T5836] [ 70.583300][ T5836] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 70.590585][ T5836] CPU: 1 UID: 0 PID: 5836 Comm: syz-executor156 Not tainted 6.13.0-rc3-next-20241220-syzkaller #0 [ 70.601169][ T5836] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 70.611214][ T5836] Call Trace: [ 70.614494][ T5836] [ 70.617413][ T5836] dump_stack_lvl+0x241/0x360 [ 70.622085][ T5836] ? __pfx_dump_stack_lvl+0x10/0x10 [ 70.627271][ T5836] ? __pfx__printk+0x10/0x10 [ 70.631863][ T5836] ? vscnprintf+0x5d/0x90 [ 70.636196][ T5836] panic+0x349/0x880 [ 70.640095][ T5836] ? __warn+0x174/0x4d0 [ 70.644252][ T5836] ? __pfx_panic+0x10/0x10 [ 70.648777][ T5836] __warn+0x344/0x4d0 [ 70.652757][ T5836] ? drop_nlink+0xc4/0x110 [ 70.657174][ T5836] report_bug+0x2b3/0x500 [ 70.661503][ T5836] ? drop_nlink+0xc4/0x110 [ 70.666007][ T5836] handle_bug+0x60/0x90 [ 70.670508][ T5836] exc_invalid_op+0x1a/0x50 [ 70.675005][ T5836] asm_exc_invalid_op+0x1a/0x20 [ 70.679851][ T5836] RIP: 0010:drop_nlink+0xc4/0x110 [ 70.684896][ T5836] Code: bb 70 07 00 00 be 08 00 00 00 e8 87 15 e7 ff f0 48 ff 83 70 07 00 00 5b 41 5c 41 5e 41 5f 5d c3 cc cc cc cc e8 4d 97 80 ff 90 <0f> 0b 90 eb 83 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 5c ff ff ff [ 70.704500][ T5836] RSP: 0018:ffffc9000413fd30 EFLAGS: 00010293 [ 70.710587][ T5836] RAX: ffffffff823e8cd3 RBX: 1ffff1100f2c5163 RCX: ffff888011a85a00 [ 70.718570][ T5836] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 70.726570][ T5836] RBP: 0000000000000000 R08: ffffffff823e8c53 R09: 1ffffffff203563e [ 70.734537][ T5836] R10: dffffc0000000000 R11: fffffbfff203563f R12: ffff888079628b18 [ 70.742508][ T5836] R13: ffff88807e553a70 R14: ffff888079628ad0 R15: dffffc0000000000 [ 70.750485][ T5836] ? drop_nlink+0x43/0x110 [ 70.754928][ T5836] ? drop_nlink+0xc3/0x110 [ 70.759350][ T5836] minix_rmdir+0xa5/0xc0 [ 70.763587][ T5836] vfs_rmdir+0x3a3/0x510 [ 70.767837][ T5836] do_rmdir+0x3b5/0x580 [ 70.771988][ T5836] ? __virt_addr_valid+0x183/0x530 [ 70.777109][ T5836] ? __pfx_do_rmdir+0x10/0x10 [ 70.781809][ T5836] ? getname_flags+0x1e3/0x540 [ 70.786569][ T5836] __x64_sys_rmdir+0x47/0x50 [ 70.791157][ T5836] do_syscall_64+0xf3/0x230 [ 70.795658][ T5836] ? clear_bhb_loop+0x35/0x90 [ 70.800344][ T5836] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 70.806580][ T5836] RIP: 0033:0x7fb7dabbbd87 [ 70.810989][ T5836] Code: 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 54 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 70.830591][ T5836] RSP: 002b:00007ffdc83e5ee8 EFLAGS: 00000207 ORIG_RAX: 0000000000000054 [ 70.839003][ T5836] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb7dabbbd87 [ 70.846969][ T5836] RDX: 0000000000008890 RSI: 0000000000000000 RDI: 00007ffdc83e7090 [ 70.854953][ T5836] RBP: 0000000000000065 R08: 0000000000000000 R09: 0000000000000000 [ 70.862922][ T5836] R10: 0000000000000100 R11: 0000000000000207 R12: 00007ffdc83e7090 [ 70.870912][ T5836] R13: 000055558751b740 R14: 431bde82d7b634db R15: 00007ffdc83e9210 [ 70.878890][ T5836] [ 70.882196][ T5836] Kernel Offset: disabled [ 70.886566][ T5836] Rebooting in 86400 seconds..