./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2352715754 <...> Warning: Permanently added '10.128.0.84' (ED25519) to the list of known hosts. execve("./syz-executor2352715754", ["./syz-executor2352715754"], 0x7ffde807ef50 /* 10 vars */) = 0 brk(NULL) = 0x555592c31000 brk(0x555592c31d00) = 0x555592c31d00 arch_prctl(ARCH_SET_FS, 0x555592c31380) = 0 set_tid_address(0x555592c31650) = 5830 set_robust_list(0x555592c31660, 24) = 0 rseq(0x555592c31ca0, 0x20, 0, 0x53053053) = 0 prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor2352715754", 4096) = 28 getrandom("\x30\x24\x97\x2b\xaa\xd0\x93\xba", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555592c31d00 brk(0x555592c52d00) = 0x555592c52d00 brk(0x555592c53000) = 0x555592c53000 mprotect(0x7fb020758000, 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.VHqDqD", 0700) = 0 chmod("./syzkaller.VHqDqD", 0777) = 0 chdir("./syzkaller.VHqDqD") = 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 5831 attached [pid 5831] set_robust_list(0x555592c31660, 24 [pid 5830] <... clone resumed>, child_tidptr=0x555592c31650) = 5831 [pid 5831] <... set_robust_list resumed>) = 0 [pid 5831] chdir("./0") = 0 [pid 5831] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 5831] setpgid(0, 0) = 0 [pid 5831] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 5831] write(3, "1000", 4) = 4 [pid 5831] close(3) = 0 [pid 5831] symlink("/dev/binderfs", "./binderfs") = 0 [pid 5831] write(1, "executing program\n", 18executing program ) = 18 [pid 5831] memfd_create("syzkaller", 0) = 3 [pid 5831] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fb018200000 [pid 5831] 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 5831] munmap(0x7fb018200000, 138412032) = 0 [pid 5831] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 5831] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 5831] close(3) = 0 [pid 5831] close(4) = 0 [pid 5831] mkdir("./bus", 0777) = 0 [pid 5831] mount("/dev/loop0", "./bus", "minix", MS_REC, "") = 0 [pid 5831] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 5831] chdir("./bus") = 0 [pid 5831] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = -1 EBUSY (Device or resource busy) [ 61.842397][ T5831] loop0: detected capacity change from 0 to 64 [pid 5831] truncate("./file2", 524288) = 0 [pid 5831] unlink("./file1") = 0 [pid 5831] creat("./bus", 000) = -1 ENOSPC (No space left on device) [pid 5831] mkdirat(AT_FDCWD, "./file0", 000) = -1 EEXIST (File exists) [pid 5831] mkdirat(AT_FDCWD, "./file1", 000) = 0 [pid 5831] mkdir("./bus", 000) = 0 [ 61.887084][ T5831] Trying to free block not in datazone [ 61.901886][ T5831] Trying to free block not in datazone [ 61.907594][ T5831] minix_free_inode: bit 5 already cleared [pid 5831] mount(NULL, "./bus", "overlay", 0, "upperdir=./file1,lowerdir=./file0,workdir=./bus,") = 0 [pid 5831] chdir("./bus") = 0 [ 61.949953][ T5831] overlayfs: upper fs needs to support d_type. [ 61.958534][ T5831] overlayfs: upper fs does not support RENAME_WHITEOUT. [ 61.965595][ T5831] overlayfs: failed to set xattr on upper [ 61.971325][ T5831] overlayfs: ...falling back to redirect_dir=nofollow. [ 61.978213][ T5831] overlayfs: ...falling back to index=off. [ 61.984042][ T5831] overlayfs: ...falling back to uuid=null. [pid 5831] open("./bus", O_RDWR|O_CREAT|O_NOCTTY|O_TRUNC|O_NONBLOCK|O_SYNC|O_DIRECT|O_NOATIME|O_CLOEXEC, 000) = 4 [pid 5831] exit_group(0) = ? [pid 5831] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=5831, si_uid=0, si_status=0, si_utime=0, si_stime=9 /* 0.09 s */} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) [ 62.000570][ T29] audit: type=1800 audit(1736091900.007:2): pid=5831 uid=0 auid=4294967295 ses=4294967295 subj=unconfined op=collect_data cause=failed(directio) comm="syz-executor235" 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, 0x555592c326f0 /* 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, 0x555592c3a730 /* 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, 0x555592c42770 /* 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, 0x555592c4a7b0 /* 2 entries */, 32768) = 48 getdents64(6, 0x555592c4a7b0 /* 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, 0x555592c42770 /* 0 entries */, 32768) = 0 close(5) = 0 [ 62.410132][ T5830] ------------[ cut here ]------------ [ 62.415835][ T5830] WARNING: CPU: 0 PID: 5830 at fs/inode.c:407 drop_nlink+0xc4/0x110 [ 62.424369][ T5830] Modules linked in: [ 62.428304][ T5830] CPU: 0 UID: 0 PID: 5830 Comm: syz-executor235 Not tainted 6.13.0-rc3-next-20241220-syzkaller #0 [ 62.439008][ T5830] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 62.449108][ T5830] RIP: 0010:drop_nlink+0xc4/0x110 [ 62.454216][ T5830] 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 [ 62.473893][ T5830] RSP: 0018:ffffc90003ecfd30 EFLAGS: 00010293 [ 62.479969][ T5830] RAX: ffffffff823e8cd3 RBX: 1ffff1100ef7ca0c RCX: ffff88803493bc00 [ 62.488051][ T5830] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 62.496101][ T5830] RBP: 0000000000000000 R08: ffffffff823e8c53 R09: 1ffffffff203563e [ 62.504147][ T5830] R10: dffffc0000000000 R11: fffffbfff203563f R12: ffff888077be5060 [ 62.512149][ T5830] R13: ffff8880792a5a70 R14: ffff888077be5018 R15: dffffc0000000000 [ 62.520238][ T5830] FS: 0000555592c31380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 [ 62.529219][ T5830] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.535874][ T5830] CR2: 00007ffe52599f9c CR3: 0000000076e2e000 CR4: 00000000003526f0 [ 62.543905][ T5830] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 62.551896][ T5830] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 62.559948][ T5830] Call Trace: [ 62.563318][ T5830] [ 62.566260][ T5830] ? __warn+0x165/0x4d0 [ 62.570411][ T5830] ? drop_nlink+0xc4/0x110 [ 62.574899][ T5830] ? report_bug+0x2b3/0x500 [ 62.579430][ T5830] ? drop_nlink+0xc4/0x110 [ 62.583905][ T5830] ? handle_bug+0x60/0x90 [ 62.588248][ T5830] ? exc_invalid_op+0x1a/0x50 [ 62.593027][ T5830] ? asm_exc_invalid_op+0x1a/0x20 [ 62.598072][ T5830] ? drop_nlink+0x43/0x110 [ 62.602487][ T5830] ? drop_nlink+0xc3/0x110 [ 62.606962][ T5830] ? drop_nlink+0xc4/0x110 [ 62.611402][ T5830] minix_rmdir+0xa5/0xc0 [ 62.615709][ T5830] vfs_rmdir+0x3a3/0x510 [ 62.619972][ T5830] do_rmdir+0x3b5/0x580 [ 62.624207][ T5830] ? __virt_addr_valid+0x183/0x530 [ 62.629343][ T5830] ? __pfx_do_rmdir+0x10/0x10 [ 62.634120][ T5830] ? getname_flags+0x1e3/0x540 [ 62.638910][ T5830] __x64_sys_rmdir+0x47/0x50 [ 62.643559][ T5830] do_syscall_64+0xf3/0x230 [ 62.648075][ T5830] ? clear_bhb_loop+0x35/0x90 [ 62.652751][ T5830] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 62.658719][ T5830] RIP: 0033:0x7fb0206e3d47 [ 62.663181][ T5830] 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 [ 62.682898][ T5830] RSP: 002b:00007ffe52599f88 EFLAGS: 00000207 ORIG_RAX: 0000000000000054 [ 62.691340][ T5830] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb0206e3d47 [ 62.699360][ T5830] RDX: 0000000000008890 RSI: 0000000000000000 RDI: 00007ffe5259b130 [ 62.707402][ T5830] RBP: 0000000000000065 R08: 0000000000000000 R09: 0000000000000000 [ 62.715423][ T5830] R10: 0000000000000100 R11: 0000000000000207 R12: 00007ffe5259b130 [ 62.723449][ T5830] R13: 0000555592c42740 R14: 431bde82d7b634db R15: 00007ffe5259d2b0 [ 62.731426][ T5830] [ 62.734501][ T5830] Kernel panic - not syncing: kernel: panic_on_warn set ... [ 62.741795][ T5830] CPU: 0 UID: 0 PID: 5830 Comm: syz-executor235 Not tainted 6.13.0-rc3-next-20241220-syzkaller #0 [ 62.752452][ T5830] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 62.762498][ T5830] Call Trace: [ 62.765768][ T5830] [ 62.768690][ T5830] dump_stack_lvl+0x241/0x360 [ 62.773363][ T5830] ? __pfx_dump_stack_lvl+0x10/0x10 [ 62.778547][ T5830] ? __pfx__printk+0x10/0x10 [ 62.783132][ T5830] ? vscnprintf+0x5d/0x90 [ 62.787451][ T5830] panic+0x349/0x880 [ 62.791337][ T5830] ? __warn+0x174/0x4d0 [ 62.795493][ T5830] ? __pfx_panic+0x10/0x10 [ 62.799929][ T5830] __warn+0x344/0x4d0 [ 62.803911][ T5830] ? drop_nlink+0xc4/0x110 [ 62.808332][ T5830] report_bug+0x2b3/0x500 [ 62.812659][ T5830] ? drop_nlink+0xc4/0x110 [ 62.817084][ T5830] handle_bug+0x60/0x90 [ 62.821236][ T5830] exc_invalid_op+0x1a/0x50 [ 62.825735][ T5830] asm_exc_invalid_op+0x1a/0x20 [ 62.830583][ T5830] RIP: 0010:drop_nlink+0xc4/0x110 [ 62.835609][ T5830] 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 [ 62.855215][ T5830] RSP: 0018:ffffc90003ecfd30 EFLAGS: 00010293 [ 62.861283][ T5830] RAX: ffffffff823e8cd3 RBX: 1ffff1100ef7ca0c RCX: ffff88803493bc00 [ 62.869250][ T5830] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 [ 62.877215][ T5830] RBP: 0000000000000000 R08: ffffffff823e8c53 R09: 1ffffffff203563e [ 62.885179][ T5830] R10: dffffc0000000000 R11: fffffbfff203563f R12: ffff888077be5060 [ 62.893145][ T5830] R13: ffff8880792a5a70 R14: ffff888077be5018 R15: dffffc0000000000 [ 62.901553][ T5830] ? drop_nlink+0x43/0x110 [ 62.905972][ T5830] ? drop_nlink+0xc3/0x110 [ 62.910395][ T5830] minix_rmdir+0xa5/0xc0 [ 62.914636][ T5830] vfs_rmdir+0x3a3/0x510 [ 62.918880][ T5830] do_rmdir+0x3b5/0x580 [ 62.923121][ T5830] ? __virt_addr_valid+0x183/0x530 [ 62.928237][ T5830] ? __pfx_do_rmdir+0x10/0x10 [ 62.932920][ T5830] ? getname_flags+0x1e3/0x540 [ 62.937682][ T5830] __x64_sys_rmdir+0x47/0x50 [ 62.942270][ T5830] do_syscall_64+0xf3/0x230 [ 62.946769][ T5830] ? clear_bhb_loop+0x35/0x90 [ 62.951469][ T5830] entry_SYSCALL_64_after_hwframe+0x77/0x7f [ 62.957391][ T5830] RIP: 0033:0x7fb0206e3d47 [ 62.961823][ T5830] 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 [ 62.981454][ T5830] RSP: 002b:00007ffe52599f88 EFLAGS: 00000207 ORIG_RAX: 0000000000000054 [ 62.989872][ T5830] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb0206e3d47 [ 62.997852][ T5830] RDX: 0000000000008890 RSI: 0000000000000000 RDI: 00007ffe5259b130 [ 63.005821][ T5830] RBP: 0000000000000065 R08: 0000000000000000 R09: 0000000000000000 [ 63.013802][ T5830] R10: 0000000000000100 R11: 0000000000000207 R12: 00007ffe5259b130 [ 63.021775][ T5830] R13: 0000555592c42740 R14: 431bde82d7b634db R15: 00007ffe5259d2b0 [ 63.029755][ T5830] [ 63.033052][ T5830] Kernel Offset: disabled [ 63.037408][ T5830] Rebooting in 86400 seconds..