./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor2471052445 <...> Warning: Permanently added '10.128.1.73' (ED25519) to the list of known hosts. execve("./syz-executor2471052445", ["./syz-executor2471052445"], 0x7ffe24e21eb0 /* 10 vars */) = 0 brk(NULL) = 0x555586b42000 brk(0x555586b42d00) = 0x555586b42d00 arch_prctl(ARCH_SET_FS, 0x555586b42380) = 0 set_tid_address(0x555586b42650) = 294 set_robust_list(0x555586b42660, 24) = 0 rseq(0x555586b42ca0, 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-executor2471052445", 4096) = 28 getrandom("\xd2\x30\x48\xfc\x07\xf0\x2f\x98", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x555586b42d00 brk(0x555586b63d00) = 0x555586b63d00 brk(0x555586b64000) = 0x555586b64000 mprotect(0x7fe2c44f8000, 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.Pp3kPE", 0700) = 0 chmod("./syzkaller.Pp3kPE", 0777) = 0 chdir("./syzkaller.Pp3kPE") = 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=0x555586b42650) = 295 ./strace-static-x86_64: Process 295 attached [pid 295] set_robust_list(0x555586b42660, 24) = 0 [pid 295] chdir("./0") = 0 [pid 295] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 295] setpgid(0, 0) = 0 [pid 295] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 295] write(3, "1000", 4) = 4 [pid 295] close(3) = 0 [pid 295] symlink("/dev/binderfs", "./binderfs") = 0 [pid 295] write(1, "executing program\n", 18executing program ) = 18 [pid 295] memfd_create("syzkaller", 0) = 3 [pid 295] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe2bc045000 [pid 295] 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 295] munmap(0x7fe2bc045000, 138412032) = 0 [pid 295] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [ 22.644509][ T30] audit: type=1400 audit(1734714758.786:66): avc: denied { execmem } for pid=294 comm="syz-executor247" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 22.668364][ T30] audit: type=1400 audit(1734714758.806:67): avc: denied { read write } for pid=294 comm="syz-executor247" 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 [pid 295] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 295] close(3) = 0 [ 22.671347][ T295] loop0: detected capacity change from 0 to 512 [ 22.698407][ T30] audit: type=1400 audit(1734714758.806:68): avc: denied { open } for pid=294 comm="syz-executor247" 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 [pid 295] close(4) = 0 [pid 295] mkdir("./file0", 0777) = 0 [ 22.722540][ T30] audit: type=1400 audit(1734714758.806:69): avc: denied { ioctl } for pid=294 comm="syz-executor247" 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 [ 22.767788][ T30] audit: type=1400 audit(1734714758.916:70): avc: denied { mounton } for pid=295 comm="syz-executor247" path="/root/syzkaller.Pp3kPE/0/file0" dev="sda1" ino=1930 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 22.768270][ T295] EXT4-fs (loop0): Ignoring removed mblk_io_submit option [ 22.800870][ T295] EXT4-fs error (device loop0): ext4_xattr_inode_iget:404: comm syz-executor247: inode #1: comm syz-executor247: iget: illegal inode # [ 22.814675][ T295] EXT4-fs error (device loop0): ext4_xattr_inode_iget:409: comm syz-executor247: error while reading EA inode 1 err=-117 [ 22.827287][ T295] EXT4-fs warning (device loop0): ext4_expand_extra_isize_ea:2816: Unable to expand inode 15. Delete some EAs or run e2fsck. [ 22.840060][ T295] EXT4-fs error (device loop0): ext4_xattr_inode_iget:404: comm syz-executor247: inode #1: comm syz-executor247: iget: illegal inode # [ 22.853795][ T295] EXT4-fs error (device loop0): ext4_xattr_inode_iget:409: comm syz-executor247: error while reading EA inode 1 err=-117 [pid 295] mount("/dev/loop0", "./file0", "ext4", MS_NOSYMFOLLOW|MS_NOATIME|MS_I_VERSION|0x200, "journal_ioprio=0x0000000000000005,journal_dev=0x0000000000008000,debug_want_extra_isize=0x0000000000"...) = 0 [pid 295] openat(AT_FDCWD, "./file0", O_RDONLY|O_DIRECTORY) = 3 [pid 295] chdir("./file0") = 0 [pid 295] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 295] ioctl(4, LOOP_CLR_FD) = 0 [pid 295] close(4) = 0 [pid 295] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 295] exit_group(0) = ? [pid 295] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=295, si_uid=0, si_status=0, si_utime=0, si_stime=11} --- 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, 0x555586b436f0 /* 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 [ 22.866663][ T295] EXT4-fs (loop0): 1 orphan inode deleted [ 22.872177][ T295] EXT4-fs (loop0): mounted filesystem without journal. Opts: journal_ioprio=0x0000000000000005,journal_dev=0x0000000000008000,debug_want_extra_isize=0x000000000000005c,minixdf,resgid=0x0000000000000000,nombcache,mblk_io_submit,,errors=continue. Quota mode: none. 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, 0x555586b4b730 /* 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, 0x555586b53770 /* 2 entries */, 32768) = 48 getdents64(5, 0x555586b53770 /* 0 entries */, 32768) = 0 close(5) = 0 rmdir("./0/file0/file1") = 0 [ 22.897383][ T30] audit: type=1400 audit(1734714759.046:71): avc: denied { mount } for pid=295 comm="syz-executor247" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [ 22.919099][ T30] audit: type=1400 audit(1734714759.056:72): avc: denied { mounton } for pid=295 comm="syz-executor247" path="/root/syzkaller.Pp3kPE/0/file0/file0" dev="loop0" ino=12 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 22.920077][ T294] EXT4-fs error (device loop0): htree_dirblock_to_tree:1112: inode #2: block 13: comm syz-executor247: bad entry in directory: rec_len is smaller than minimal - offset=76, inode=0, rec_len=0, size=1024 fake=0 [ 22.944468][ T30] audit: type=1400 audit(1734714759.056:73): avc: denied { write } for pid=295 comm="syz-executor247" name="file0" dev="loop0" ino=12 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 22.986117][ T30] audit: type=1400 audit(1734714759.056:74): avc: denied { add_name } for pid=295 comm="syz-executor247" name=".index" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 22.986254][ T294] ------------[ cut here ]------------ [ 23.006944][ T30] audit: type=1400 audit(1734714759.056:75): avc: denied { create } for pid=295 comm="syz-executor247" name=".index" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=dir permissive=1 [ 23.012192][ T294] kernel BUG at fs/namei.c:2933! [ 23.037345][ T294] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 23.043202][ T294] CPU: 0 PID: 294 Comm: syz-executor247 Not tainted 5.15.173-syzkaller-00161-gb4bd207b0380 #0 [ 23.053271][ T294] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 [ 23.063165][ T294] RIP: 0010:may_delete+0x6eb/0x6f0 [ 23.068111][ T294] 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 [ 23.087553][ T294] RSP: 0018:ffffc90000967bb0 EFLAGS: 00010293 [ 23.093454][ T294] RAX: ffffffff81be4f0b RBX: ffff888109815f10 RCX: ffff88810ce32780 [ 23.101265][ T294] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 23.109078][ T294] RBP: ffffc90000967c18 R08: ffffffff81be489f R09: 0000000000000003 [ 23.116890][ T294] R10: fffff5200012cf58 R11: dffffc0000000001 R12: ffff888121600bb0 [ 23.124701][ T294] R13: 1ffff110242c0176 R14: ffff8881216f18b8 R15: dffffc0000000000 [ 23.132511][ T294] FS: 0000555586b42380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 23.141277][ T294] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.147699][ T294] CR2: 000056554ac44b98 CR3: 00000001097d3000 CR4: 00000000003506b0 [ 23.155512][ T294] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.163324][ T294] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.171134][ T294] Call Trace: [ 23.174261][ T294] [ 23.177037][ T294] ? __die_body+0x62/0xb0 [ 23.181201][ T294] ? die+0x88/0xb0 [ 23.184760][ T294] ? do_trap+0x103/0x330 [ 23.188839][ T294] ? may_delete+0x6eb/0x6f0 [ 23.193178][ T294] ? handle_invalid_op+0x95/0xc0 [ 23.197951][ T294] ? may_delete+0x6eb/0x6f0 [ 23.202295][ T294] ? exc_invalid_op+0x32/0x50 [ 23.206806][ T294] ? asm_exc_invalid_op+0x1b/0x20 [ 23.211667][ T294] ? may_delete+0x7f/0x6f0 [ 23.215917][ T294] ? may_delete+0x6eb/0x6f0 [ 23.220261][ T294] ? may_delete+0x6eb/0x6f0 [ 23.224600][ T294] vfs_rmdir+0x32/0x470 [ 23.228590][ T294] incfs_kill_sb+0x113/0x230 [ 23.233017][ T294] deactivate_locked_super+0xad/0x110 [ 23.238225][ T294] deactivate_super+0xbe/0xf0 [ 23.242737][ T294] cleanup_mnt+0x45c/0x510 [ 23.246991][ T294] __cleanup_mnt+0x19/0x20 [ 23.251242][ T294] task_work_run+0x129/0x190 [ 23.255669][ T294] ptrace_notify+0x29e/0x350 [ 23.260095][ T294] ? do_notify_parent+0xa30/0xa30 [ 23.264957][ T294] ? user_path_at_empty+0x14e/0x1a0 [ 23.269990][ T294] ? __x64_sys_umount+0x122/0x170 [ 23.274852][ T294] ? path_umount+0xea0/0xea0 [ 23.279278][ T294] syscall_exit_to_user_mode+0xa3/0x160 [ 23.284657][ T294] do_syscall_64+0x47/0xb0 [ 23.288912][ T294] ? clear_bhb_loop+0x35/0x90 [ 23.293432][ T294] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 23.299153][ T294] RIP: 0033:0x7fe2c4485507 [ 23.303407][ T294] 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 [ 23.322847][ T294] RSP: 002b:00007ffc7ecb0bd8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 23.331094][ T294] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fe2c4485507 [ 23.338902][ T294] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc7ecb0c90 [ 23.346713][ T294] RBP: 00007ffc7ecb0c90 R08: 0000000000000000 R09: 0000000000000000 [ 23.354527][ T294] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffc7ecb1d80 [ 23.362336][ T294] R13: 0000555586b4b700 R14: 431bde82d7b634db R15: 00007ffc7ecb2e10 [ 23.370150][ T294] [ 23.373011][ T294] Modules linked in: [ 23.376814][ T294] ---[ end trace 3bcfb4819436b9bc ]--- [ 23.382040][ T294] RIP: 0010:may_delete+0x6eb/0x6f0 [ 23.387010][ T294] 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 [ 23.406442][ T294] RSP: 0018:ffffc90000967bb0 EFLAGS: 00010293 [ 23.412356][ T294] RAX: ffffffff81be4f0b RBX: ffff888109815f10 RCX: ffff88810ce32780 [ 23.420160][ T294] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 23.427975][ T294] RBP: ffffc90000967c18 R08: ffffffff81be489f R09: 0000000000000003 [ 23.435763][ T294] R10: fffff5200012cf58 R11: dffffc0000000001 R12: ffff888121600bb0 [ 23.443597][ T294] R13: 1ffff110242c0176 R14: ffff8881216f18b8 R15: dffffc0000000000 [ 23.451397][ T294] FS: 0000555586b42380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 23.460166][ T294] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.466585][ T294] CR2: 000056554ac44b98 CR3: 00000001097d3000 CR4: 00000000003506b0 [ 23.474388][ T294] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.482215][ T294] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.490030][ T294] Kernel panic - not syncing: Fatal exception [ 23.496208][ T294] Kernel Offset: disabled [ 23.500339][ T294] Rebooting in 86400 seconds..