./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1618205647 <...> Warning: Permanently added '10.128.1.173' (ED25519) to the list of known hosts. execve("./syz-executor1618205647", ["./syz-executor1618205647"], 0x7ffdcd828680 /* 10 vars */) = 0 brk(NULL) = 0x555593aba000 brk(0x555593abad00) = 0x555593abad00 arch_prctl(ARCH_SET_FS, 0x555593aba380) = 0 set_tid_address(0x555593aba650) = 293 set_robust_list(0x555593aba660, 24) = 0 rseq(0x555593abaca0, 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-executor1618205647", 4096) = 28 getrandom("\x7a\xf2\xcd\xa7\x55\x5d\x1e\x1d", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555593abad00 brk(0x555593adbd00) = 0x555593adbd00 brk(0x555593adc000) = 0x555593adc000 mprotect(0x7fd07a11f000, 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.0u9Quz", 0700) = 0 chmod("./syzkaller.0u9Quz", 0777) = 0 chdir("./syzkaller.0u9Quz") = 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=0x555593aba650) = 294 ./strace-static-x86_64: Process 294 attached [pid 294] set_robust_list(0x555593aba660, 24) = 0 [pid 294] chdir("./0") = 0 [pid 294] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 294] setpgid(0, 0) = 0 [pid 294] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 294] write(3, "1000", 4) = 4 [pid 294] close(3) = 0 [pid 294] symlink("/dev/binderfs", "./binderfs") = 0 [pid 294] write(1, "executing program\n", 18executing program ) = 18 [pid 294] memfd_create("syzkaller", 0) = 3 [pid 294] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fd071c6c000 [pid 294] 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"..., 262144) = 262144 [pid 294] munmap(0x7fd071c6c000, 138412032) = 0 [pid 294] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 294] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 294] close(3) = 0 [pid 294] close(4) = 0 [pid 294] mkdir("./file0", 0777) = 0 [ 21.139825][ T30] audit: type=1400 audit(1734720164.942:66): avc: denied { execmem } for pid=293 comm="syz-executor161" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 21.164342][ T294] loop0: detected capacity change from 0 to 512 [ 21.170520][ T30] audit: type=1400 audit(1734720164.942:67): avc: denied { read write } for pid=293 comm="syz-executor161" name="loop0" dev="devtmpfs" ino=112 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 21.175147][ T294] EXT4-fs (loop0): Ignoring removed nobh option [ 21.194967][ T30] audit: type=1400 audit(1734720164.942:68): avc: denied { open } for pid=293 comm="syz-executor161" path="/dev/loop0" dev="devtmpfs" ino=112 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 21.224551][ T30] audit: type=1400 audit(1734720164.942:69): avc: denied { ioctl } for pid=293 comm="syz-executor161" path="/dev/loop0" dev="devtmpfs" ino=112 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 21.226223][ T294] EXT4-fs error (device loop0): ext4_xattr_inode_iget:404: comm syz-executor161: inode #1: comm syz-executor161: iget: illegal inode # [ 21.250562][ T30] audit: type=1400 audit(1734720164.972:70): avc: denied { mounton } for pid=294 comm="syz-executor161" path="/root/syzkaller.0u9Quz/0/file0" dev="sda1" ino=1930 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [pid 294] mount("/dev/loop0", "./file0", "ext4", MS_NOSYMFOLLOW|MS_NOATIME|MS_I_VERSION|0x200, "journal_ioprio=0x0000000000000005,journal_dev=0x0000000000008000,nobh,minixdf,resgid=0x0000000000000"...) = 0 [pid 294] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 294] chdir("./file0") = 0 [pid 294] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 294] ioctl(4, LOOP_CLR_FD) = 0 [pid 294] close(4) = 0 [pid 294] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 294] exit_group(0) = ? [pid 294] +++ exited with 0 +++ [ 21.288389][ T294] EXT4-fs error (device loop0): ext4_xattr_inode_iget:409: comm syz-executor161: error while reading EA inode 1 err=-117 [ 21.301106][ T294] EXT4-fs (loop0): 1 orphan inode deleted [ 21.306625][ T294] EXT4-fs (loop0): mounted filesystem without journal. Opts: journal_ioprio=0x0000000000000005,journal_dev=0x0000000000008000,nobh,minixdf,resgid=0x0000000000000000,grpquota,usrjquota=,,errors=continue. Quota mode: writeback. --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=294, si_uid=0, si_status=0, si_utime=0, si_stime=7} --- 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, 0x555593abb6f0 /* 4 entries */, 32768) = 112 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/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EBUSY (Device or resource busy) newfstatat(AT_FDCWD, "./0/file0", {st_mode=S_IFDIR|0755, st_size=1024, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/file0", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EBUSY (Device or resource busy) openat(AT_FDCWD, "./0/file0", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0755, st_size=1024, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x555593ac3730 /* 5 entries */, 32768) = 144 umount2("./0/file0/lost+found", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/file0/lost+found", {st_mode=S_IFBLK|S_ISVTX|0614, st_rdev=makedev(0, 0xe), ...}, AT_SYMLINK_NOFOLLOW) = 0 unlink("./0/file0/lost+found") = 0 umount2("./0/file0/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/file0/file1", {st_mode=S_IFDIR|0700, st_size=60, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/file0/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0/file0/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 5 newfstatat(5, "", {st_mode=S_IFDIR|0700, st_size=60, ...}, AT_EMPTY_PATH) = 0 getdents64(5, 0x555593acb770 /* 2 entries */, 32768) = 48 getdents64(5, 0x555593acb770 /* 0 entries */, 32768) = 0 close(5) = 0 rmdir("./0/file0/file1") = 0 [ 21.328582][ T30] audit: type=1400 audit(1734720165.132:71): avc: denied { mount } for pid=294 comm="syz-executor161" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 21.349115][ T293] EXT4-fs error (device loop0): htree_dirblock_to_tree:1112: inode #2: block 13: comm syz-executor161: bad entry in directory: rec_len is smaller than minimal - offset=76, inode=0, rec_len=0, size=1024 fake=0 [ 21.350522][ T30] audit: type=1400 audit(1734720165.142:72): avc: denied { mounton } for pid=294 comm="syz-executor161" path="/root/syzkaller.0u9Quz/0/file0/file0" dev="loop0" ino=12 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 21.395549][ T293] ------------[ cut here ]------------ [ 21.395923][ T30] audit: type=1400 audit(1734720165.142:73): avc: denied { write } for pid=294 comm="syz-executor161" name="file0" dev="loop0" ino=12 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 21.401379][ T293] kernel BUG at fs/namei.c:2933! [ 21.423098][ T30] audit: type=1400 audit(1734720165.142:74): avc: denied { add_name } for pid=294 comm="syz-executor161" name=".index" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 21.428052][ T293] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 21.448618][ T30] audit: type=1400 audit(1734720165.142:75): avc: denied { create } for pid=294 comm="syz-executor161" name=".index" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=dir permissive=1 [ 21.454451][ T293] CPU: 0 PID: 293 Comm: syz-executor161 Not tainted 5.15.173-syzkaller-00161-gb4bd207b0380 #0 [ 21.484744][ T293] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 [ 21.494636][ T293] RIP: 0010:may_delete+0x6eb/0x6f0 [ 21.499583][ T293] Code: 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 7f fe ff ff 4c 89 e7 e8 c6 6f f4 ff e9 72 fe ff ff e8 ac 17 b2 ff 0f 0b e8 a5 17 b2 ff <0f> 0b 0f 1f 00 55 48 89 e5 41 56 53 48 89 fb e8 91 17 b2 ff 4c 8d [ 21.519024][ T293] RSP: 0018:ffffc90000957bb0 EFLAGS: 00010293 [ 21.524926][ T293] RAX: ffffffff81be4f0b RBX: ffff888120e52cf0 RCX: ffff88810d302780 [ 21.532738][ T293] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 21.540547][ T293] RBP: ffffc90000957c18 R08: ffffffff81be489f R09: 0000000000000003 [ 21.548449][ T293] R10: fffff5200012af58 R11: dffffc0000000001 R12: ffff888120e91330 [ 21.556258][ T293] R13: 1ffff110241d2266 R14: ffff88810998aa40 R15: dffffc0000000000 [ 21.564070][ T293] FS: 0000555593aba380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 21.572838][ T293] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.579257][ T293] CR2: 000055c23020d0b8 CR3: 000000011bb33000 CR4: 00000000003506b0 [ 21.587071][ T293] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.594885][ T293] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.602691][ T293] Call Trace: [ 21.605819][ T293] [ 21.608597][ T293] ? __die_body+0x62/0xb0 [ 21.612759][ T293] ? die+0x88/0xb0 [ 21.616321][ T293] ? do_trap+0x103/0x330 [ 21.620398][ T293] ? may_delete+0x6eb/0x6f0 [ 21.624736][ T293] ? handle_invalid_op+0x95/0xc0 [ 21.629509][ T293] ? may_delete+0x6eb/0x6f0 [ 21.633853][ T293] ? exc_invalid_op+0x32/0x50 [ 21.638365][ T293] ? asm_exc_invalid_op+0x1b/0x20 [ 21.643222][ T293] ? may_delete+0x7f/0x6f0 [ 21.647476][ T293] ? may_delete+0x6eb/0x6f0 [ 21.651818][ T293] ? may_delete+0x6eb/0x6f0 [ 21.656167][ T293] vfs_rmdir+0x32/0x470 [ 21.660149][ T293] incfs_kill_sb+0x113/0x230 [ 21.664573][ T293] deactivate_locked_super+0xad/0x110 [ 21.669784][ T293] deactivate_super+0xbe/0xf0 [ 21.674294][ T293] cleanup_mnt+0x45c/0x510 [ 21.678549][ T293] __cleanup_mnt+0x19/0x20 [ 21.682799][ T293] task_work_run+0x129/0x190 [ 21.687230][ T293] ptrace_notify+0x29e/0x350 [ 21.691652][ T293] ? do_notify_parent+0xa30/0xa30 [ 21.696513][ T293] ? user_path_at_empty+0x14e/0x1a0 [ 21.701709][ T293] ? __x64_sys_umount+0x122/0x170 [ 21.706554][ T293] ? path_umount+0xea0/0xea0 [ 21.710989][ T293] syscall_exit_to_user_mode+0xa3/0x160 [ 21.716367][ T293] do_syscall_64+0x47/0xb0 [ 21.720623][ T293] ? clear_bhb_loop+0x35/0x90 [ 21.725144][ T293] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 21.730864][ T293] RIP: 0033:0x7fd07a0ac4c7 [ 21.735112][ T293] 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 [ 21.754553][ T293] RSP: 002b:00007fff4081a138 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [ 21.762802][ T293] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fd07a0ac4c7 [ 21.770612][ T293] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff4081a1f0 [ 21.778419][ T293] RBP: 00007fff4081a1f0 R08: 0000000000000000 R09: 0000000000000000 [ 21.786242][ T293] R10: 00000000ffffffff R11: 0000000000000202 R12: 00007fff4081b2e0 [ 21.794049][ T293] R13: 0000555593ac3700 R14: 431bde82d7b634db R15: 00007fff4081c370 [ 21.801858][ T293] [ 21.804727][ T293] Modules linked in: [ 21.808801][ T293] ---[ end trace 716c2510e46d1023 ]--- [ 21.814063][ T293] RIP: 0010:may_delete+0x6eb/0x6f0 [ 21.819041][ T293] Code: 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c 7f fe ff ff 4c 89 e7 e8 c6 6f f4 ff e9 72 fe ff ff e8 ac 17 b2 ff 0f 0b e8 a5 17 b2 ff <0f> 0b 0f 1f 00 55 48 89 e5 41 56 53 48 89 fb e8 91 17 b2 ff 4c 8d [ 21.838500][ T293] RSP: 0018:ffffc90000957bb0 EFLAGS: 00010293 [ 21.844353][ T293] RAX: ffffffff81be4f0b RBX: ffff888120e52cf0 RCX: ffff88810d302780 [ 21.852203][ T293] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 21.859994][ T293] RBP: ffffc90000957c18 R08: ffffffff81be489f R09: 0000000000000003 [ 21.867888][ T293] R10: fffff5200012af58 R11: dffffc0000000001 R12: ffff888120e91330 [ 21.875739][ T293] R13: 1ffff110241d2266 R14: ffff88810998aa40 R15: dffffc0000000000 [ 21.883527][ T293] FS: 0000555593aba380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 21.892338][ T293] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.898718][ T293] CR2: 000055c23020d0b8 CR3: 000000011bb33000 CR4: 00000000003506b0 [ 21.906506][ T293] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.914364][ T293] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.922168][ T293] Kernel panic - not syncing: Fatal exception [ 21.928249][ T293] Kernel Offset: disabled [ 21.932371][ T293] Rebooting in 86400 seconds..