./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3738470920 <...> Warning: Permanently added '10.128.0.118' (ED25519) to the list of known hosts. execve("./syz-executor3738470920", ["./syz-executor3738470920"], 0x7ffd0dd51600 /* 10 vars */) = 0 brk(NULL) = 0x5555660db000 brk(0x5555660dbd00) = 0x5555660dbd00 arch_prctl(ARCH_SET_FS, 0x5555660db380) = 0 set_tid_address(0x5555660db650) = 289 set_robust_list(0x5555660db660, 24) = 0 rseq(0x5555660dbca0, 0x20, 0, 0x53053053) = -1 ENOSYS (Function not implemented) prlimit64(0, RLIMIT_STACK, NULL, {rlim_cur=8192*1024, rlim_max=RLIM64_INFINITY}) = 0 readlink("/proc/self/exe", "/root/syz-executor3738470920", 4096) = 28 getrandom("\x2d\x76\x6a\xf8\xcb\xd8\xa4\x54", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555660dbd00 brk(0x5555660fcd00) = 0x5555660fcd00 brk(0x5555660fd000) = 0x5555660fd000 mprotect(0x7f239896d000, 16384, PROT_READ) = 0 mmap(0x1ffffffff000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x1ffffffff000 mmap(0x200000000000, 16777216, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0executing program ) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 getrandom("\xe9\x20\x32\x5f\x57\x6d\x6f\x35", 8, GRND_NONBLOCK) = 8 mkdir("./syzkaller.54ec6C", 0700) = 0 chmod("./syzkaller.54ec6C", 0777) = 0 chdir("./syzkaller.54ec6C") = 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=0x5555660db650) = 290 ./strace-static-x86_64: Process 290 attached [pid 290] set_robust_list(0x5555660db660, 24) = 0 [pid 290] chdir("./0") = 0 [pid 290] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 290] setpgid(0, 0) = 0 [pid 290] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 290] write(3, "1000", 4) = 4 [pid 290] close(3) = 0 [pid 290] symlink("/dev/binderfs", "./binderfs") = 0 [pid 290] write(1, "executing program\n", 18) = 18 [pid 290] memfd_create("syzkaller", 0) = 3 [pid 290] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f23904b9000 [pid 290] write(3, "\xeb\x3c\x90\x6d\x6b\x66\x73\x2e\x66\x61\x74\x00\x02\x01\x01\x00\x04\x70\x05\x00\x04\xf8\x20\x00\x20\x00\x02\x00\x03\x00\x00\x00\x00\x00\x00\x00\x80\x00\x29\x56\xd7\xe1\x1d\x53\x59\x5a\x4b\x41\x4c\x4c\x45\x52\x20\x20\x46\x41\x54\x31\x36\x20\x20\x20\x0e\x1f\xbe\x5b\x7c\xac\x22\xc0\x74\x0b\x56\xb4\x0e\xbb\x07\x00\xcd\x10\x5e\xeb\xf0\x32\xe4\xcd\x16\xcd\x19\xeb\xfe\xab\x00\x69\x73\x20\x69\x73\x20\x6e"..., 4194304) = 4194304 [pid 290] munmap(0x7f23904b9000, 138412032) = 0 [pid 290] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 22.542755][ T28] audit: type=1400 audit(1754925280.648:64): avc: denied { execmem } for pid=289 comm="syz-executor373" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.568084][ T28] audit: type=1400 audit(1754925280.648:65): avc: denied { read write } for pid=289 comm="syz-executor373" name="loop0" dev="devtmpfs" ino=118 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 290] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 290] close(3) = 0 [pid 290] close(4) = 0 [pid 290] mkdir("./bus", 0777) = 0 [ 22.575032][ T290] loop0: detected capacity change from 0 to 8192 [ 22.594009][ T28] audit: type=1400 audit(1754925280.648:66): avc: denied { open } for pid=289 comm="syz-executor373" path="/dev/loop0" dev="devtmpfs" ino=118 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [pid 290] mount("/dev/loop0", "./bus", "vfat", 0, "") = 0 [pid 290] openat(AT_FDCWD, "./bus", O_RDONLY|O_DIRECTORY) = 3 [pid 290] chdir("./bus") = 0 [pid 290] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 290] ioctl(4, LOOP_CLR_FD) = 0 [pid 290] close(4) = 0 [pid 290] mkdir("./bus", 000) = 0 [pid 290] mount("./bus", "./bus", "incremental-fs", 0, NULL) = 0 [pid 290] exit_group(0) = ? [pid 290] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=290, si_uid=0, si_status=0, si_utime=0, si_stime=6} --- restart_syscall(<... resuming interrupted clone ...>) = 0 umount2("./0", MNT_FORCE|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, 0x5555660dc6f0 /* 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|0700, st_size=44544, ...}, 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|0700, st_size=44544, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x5555660e4730 /* 28 entries */, 32768) = 856 umount2("./0/bus/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/bus/file0", {st_mode=S_IFDIR|0700, st_size=512, ...}, 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|0700, st_size=512, ...}, AT_EMPTY_PATH) = 0 getdents64(5, 0x5555660ec770 /* 4 entries */, 32768) = 112 umount2("./0/bus/file0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/bus/file0/.index", {st_mode=S_IFDIR|0700, st_size=512, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/bus/file0/.index", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0/bus/file0/.index", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 6 newfstatat(6, "", {st_mode=S_IFDIR|0700, st_size=512, ...}, AT_EMPTY_PATH) = 0 getdents64(6, 0x5555660f47b0 /* 2 entries */, 32768) = 48 getdents64(6, 0x5555660f47b0 /* 0 entries */, 32768) = 0 close(6) = 0 rmdir("./0/bus/file0/.index") = 0 umount2("./0/bus/file0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/bus/file0/.incomplete", {st_mode=S_IFDIR|0700, st_size=512, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/bus/file0/.incomplete", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0/bus/file0/.incomplete", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 6 newfstatat(6, "", {st_mode=S_IFDIR|0700, st_size=512, ...}, AT_EMPTY_PATH) = 0 getdents64(6, 0x5555660f47b0 /* 2 entries */, 32768) = 48 getdents64(6, 0x5555660f47b0 /* 0 entries */, 32768) = 0 close(6) = 0 rmdir("./0/bus/file0/.incomplete") = 0 getdents64(5, 0x5555660ec770 /* 0 entries */, 32768) = 0 close(5) = 0 rmdir("./0/bus/file0") = 0 umount2("\x2e\x2f\x30\x2f\x62\x75\x73\x2f\x66\x69\x6c\x65\x3f\x01\x3f\x3f\x3f\x3f\x3f\x3f\x3f", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "\x2e\x2f\x30\x2f\x62\x75\x73\x2f\x66\x69\x6c\x65\x3f\x01\x3f\x3f\x3f\x3f\x3f\x3f\x3f", {st_mode=S_IFREG|0700, st_size=10, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("\x2e\x2f\x30\x2f\x62\x75\x73\x2f\x66\x69\x6c\x65\x3f\x01\x3f\x3f\x3f\x3f\x3f\x3f\x3f") = 0 umount2("./0/bus/file2", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/bus/file2", {st_mode=S_IFREG|0700, st_size=9000, ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/bus/file2") = 0 [ 22.625551][ T28] audit: type=1400 audit(1754925280.648:67): avc: denied { ioctl } for pid=289 comm="syz-executor373" path="/dev/loop0" dev="devtmpfs" ino=118 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 22.649961][ T290] incfs: ino conflict with backing FS 3 [ 22.653166][ T28] audit: type=1400 audit(1754925280.718:68): avc: denied { mounton } for pid=290 comm="syz-executor373" path="/root/syzkaller.54ec6C/0/bus" dev="sda1" ino=2027 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 22.683329][ T28] audit: type=1400 audit(1754925280.758:69): avc: denied { mount } for pid=290 comm="syz-executor373" name="/" dev="loop0" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:dosfs_t tclass=filesystem permissive=1 [ 22.706925][ T28] audit: type=1400 audit(1754925280.758:70): avc: denied { mounton } for pid=290 comm="syz-executor373" path="/root/syzkaller.54ec6C/0/bus/bus" dev="loop0" ino=3 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:dosfs_t tclass=dir permissive=1 [ 22.709332][ T289] ------------[ cut here ]------------ [ 22.733028][ T28] audit: type=1400 audit(1754925280.778:71): avc: denied { mount } for pid=290 comm="syz-executor373" name="/" dev="incremental-fs" ino=3 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 22.738363][ T289] kernel BUG at fs/namei.c:2954! [ 22.762427][ T28] audit: type=1400 audit(1754925280.778:72): avc: denied { unmount } for pid=289 comm="syz-executor373" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:dosfs_t tclass=filesystem permissive=1 [ 22.767734][ T289] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 22.788460][ T28] audit: type=1400 audit(1754925280.788:73): avc: denied { unmount } for pid=289 comm="syz-executor373" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=filesystem permissive=1 [ 22.794391][ T289] CPU: 0 PID: 289 Comm: syz-executor373 Not tainted 6.1.145-syzkaller-00002-gc750dc582629 #0 [ 22.824970][ T289] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 [ 22.835151][ T289] RIP: 0010:may_delete+0x701/0x710 [ 22.840300][ T289] Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 84 fe ff ff 48 89 df e8 d0 14 f4 ff e9 77 fe ff ff e8 a6 b1 af ff 0f 0b e8 9f b1 af ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 48 89 e5 41 56 53 [ 22.860396][ T289] RSP: 0018:ffffc90000e47b20 EFLAGS: 00010293 [ 22.866713][ T289] RAX: ffffffff81c050e1 RBX: ffff8881172b3880 RCX: ffff88810dbfa880 [ 22.874884][ T289] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 22.883335][ T289] RBP: ffffc90000e47b88 R08: 0000000000000004 R09: 0000000000000003 [ 22.891516][ T289] R10: fffff520001c8f44 R11: 1ffff920001c8f44 R12: dffffc0000000000 [ 22.899841][ T289] R13: 0000000000000001 R14: ffff8881172bacf0 R15: 1ffff11022e56710 [ 22.908100][ T289] FS: 00005555660db380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 22.917369][ T289] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.924466][ T289] CR2: 00005555660fc7b8 CR3: 000000010956f000 CR4: 00000000003506b0 [ 22.932693][ T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.940832][ T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.948983][ T289] Call Trace: [ 22.952341][ T289] [ 22.955297][ T289] vfs_rmdir+0x32/0x500 [ 22.960319][ T289] incfs_kill_sb+0x105/0x220 [ 22.964901][ T289] deactivate_locked_super+0xb5/0x120 [ 22.970270][ T289] deactivate_super+0xaf/0xe0 [ 22.975238][ T289] cleanup_mnt+0x45f/0x4e0 [ 22.979904][ T289] ? umount_tree+0xe10/0xe10 [ 22.984855][ T289] __cleanup_mnt+0x19/0x20 [ 22.989295][ T289] task_work_run+0x1db/0x240 [ 22.994241][ T289] ? __cfi_task_work_run+0x10/0x10 [ 22.999346][ T289] ? path_umount+0x351/0xf50 [ 23.003945][ T289] ? __kasan_slab_free+0x11/0x20 [ 23.008983][ T289] ptrace_notify+0x221/0x250 [ 23.013750][ T289] ? __cfi_path_umount+0x10/0x10 [ 23.018771][ T289] ? __cfi_ptrace_notify+0x10/0x10 [ 23.023880][ T289] ? user_path_at_empty+0x161/0x1c0 [ 23.029319][ T289] ? __x64_sys_umount+0x125/0x160 [ 23.034332][ T289] ? __cfi___x64_sys_umount+0x10/0x10 [ 23.039962][ T289] ? fpregs_restore_userregs+0x128/0x260 [ 23.045729][ T289] syscall_exit_work+0x84/0x140 [ 23.050572][ T289] syscall_exit_to_user_mode_prepare+0x1c/0x20 [ 23.056984][ T289] syscall_exit_to_user_mode+0xd/0x30 [ 23.062459][ T289] do_syscall_64+0x58/0xa0 [ 23.067175][ T289] ? clear_bhb_loop+0x30/0x80 [ 23.071997][ T289] ? clear_bhb_loop+0x30/0x80 [ 23.076764][ T289] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 23.082744][ T289] RIP: 0033:0x7f23988f94c7 [ 23.087277][ T289] Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 01 c3 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 [ 23.107324][ T289] RSP: 002b:00007ffc9ee29f18 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 23.115835][ T289] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f23988f94c7 [ 23.123968][ T289] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc9ee29fd0 [ 23.132185][ T289] RBP: 00007ffc9ee29fd0 R08: 0000000000000000 R09: 0000000000000000 [ 23.140142][ T289] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffc9ee2b0c0 [ 23.148208][ T289] R13: 00005555660e4700 R14: 0000000000000001 R15: 431bde82d7b634db [ 23.156259][ T289] [ 23.159281][ T289] Modules linked in: [ 23.163450][ T289] ---[ end trace 0000000000000000 ]--- [ 23.169163][ T289] RIP: 0010:may_delete+0x701/0x710 [ 23.174386][ T289] Code: ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c 84 fe ff ff 48 89 df e8 d0 14 f4 ff e9 77 fe ff ff e8 a6 b1 af ff 0f 0b e8 9f b1 af ff <0f> 0b 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 55 48 89 e5 41 56 53 [ 23.194020][ T289] RSP: 0018:ffffc90000e47b20 EFLAGS: 00010293 [ 23.200315][ T289] RAX: ffffffff81c050e1 RBX: ffff8881172b3880 RCX: ffff88810dbfa880 [ 23.208311][ T289] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 23.216745][ T289] RBP: ffffc90000e47b88 R08: 0000000000000004 R09: 0000000000000003 [ 23.224803][ T289] R10: fffff520001c8f44 R11: 1ffff920001c8f44 R12: dffffc0000000000 [ 23.232913][ T289] R13: 0000000000000001 R14: ffff8881172bacf0 R15: 1ffff11022e56710 [ 23.241011][ T289] FS: 00005555660db380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 23.250170][ T289] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.256775][ T289] CR2: 00005555660fc7b8 CR3: 000000010956f000 CR4: 00000000003506b0 [ 23.264836][ T289] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.273116][ T289] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.281349][ T289] Kernel panic - not syncing: Fatal exception [ 23.287848][ T289] Kernel Offset: disabled [ 23.292390][ T289] Rebooting in 86400 seconds..