./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1805059218 <...> Warning: Permanently added '10.128.1.41' (ED25519) to the list of known hosts. execve("./syz-executor1805059218", ["./syz-executor1805059218"], 0x7ffe1f23cb30 /* 10 vars */) = 0 brk(NULL) = 0x55556f865000 brk(0x55556f865d00) = 0x55556f865d00 arch_prctl(ARCH_SET_FS, 0x55556f865380) = 0 set_tid_address(0x55556f865650) = 295 set_robust_list(0x55556f865660, 24) = 0 rseq(0x55556f865ca0, 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-executor1805059218", 4096) = 28 getrandom("\xa9\x90\x20\x53\x2e\xd6\x25\xde", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55556f865d00 brk(0x55556f886d00) = 0x55556f886d00 brk(0x55556f887000) = 0x55556f887000 mprotect(0x7f39f7b65000, 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.5w8R2f", 0700) = 0 chmod("./syzkaller.5w8R2f", 0777) = 0 chdir("./syzkaller.5w8R2f") = 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=0x55556f865650) = 296 ./strace-static-x86_64: Process 296 attached [pid 296] set_robust_list(0x55556f865660, 24) = 0 [pid 296] chdir("./0") = 0 [pid 296] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 296] setpgid(0, 0) = 0 [pid 296] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 296] write(3, "1000", 4) = 4 [pid 296] close(3) = 0 [pid 296] symlink("/dev/binderfs", "./binderfs"executing program ) = 0 [pid 296] write(1, "executing program\n", 18) = 18 [pid 296] memfd_create("syzkaller", 0) = 3 [pid 296] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f39ef6b2000 [pid 296] 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 296] munmap(0x7f39ef6b2000, 138412032) = 0 [pid 296] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 296] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 296] close(3) = 0 [ 24.033615][ T30] audit: type=1400 audit(1734800652.413:66): avc: denied { execmem } for pid=295 comm="syz-executor180" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 24.040924][ T30] audit: type=1400 audit(1734800652.423:67): avc: denied { read write } for pid=295 comm="syz-executor180" 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 [ 24.045410][ T30] audit: type=1400 audit(1734800652.423:68): avc: denied { open } for pid=295 comm="syz-executor180" 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 [ 24.057545][ T296] loop0: detected capacity change from 0 to 512 [pid 296] close(4) = 0 [pid 296] mkdir("./file1", 0777) = 0 [ 24.059037][ T30] audit: type=1400 audit(1734800652.423:69): avc: denied { ioctl } for pid=295 comm="syz-executor180" 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 [ 24.117229][ T296] ======================================================= [ 24.117229][ T296] WARNING: The mand mount option has been deprecated and [ 24.117229][ T296] and is ignored by this kernel. Remove the mand [ 24.117229][ T296] option from the mount to silence this warning. [ 24.117229][ T296] ======================================================= [ 24.117247][ T30] audit: type=1400 audit(1734800652.503:70): avc: denied { mounton } for pid=296 comm="syz-executor180" path="/root/syzkaller.5w8R2f/0/file1" dev="sda1" ino=1930 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 24.218352][ T296] EXT4-fs (loop0): 1 orphan inode deleted [ 24.223893][ T296] EXT4-fs (loop0): mounted filesystem without journal. Opts: errors=remount-ro,nodiscard,noquota,init_itable,stripe=0x0000000000000079,resgid=0x0000000000000000,sysvgroups,delalloc,errors=continue,. Quota mode: writeback. [ 24.245477][ T30] audit: type=1400 audit(1734800652.623:71): avc: denied { mount } for pid=296 comm="syz-executor180" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [pid 296] mount("/dev/loop0", "./file1", "ext4", MS_MANDLOCK|MS_LAZYTIME, "errors=remount-ro,nodiscard,noquota,init_itable,stripe=0x0000000000000079,resgid=0x0000000000000000,"...) = 0 [pid 296] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 296] chdir("./file1") = 0 [pid 296] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 296] ioctl(4, LOOP_CLR_FD) = 0 [pid 296] close(4) = 0 [pid 296] mount("./file0", "./file0", "incremental-fs", 0, NULL) = 0 [pid 296] open("./file2", O_RDWR|O_CREAT|O_TRUNC|O_SYNC|O_LARGEFILE|O_NOATIME|0x3c, 000) = -1 EISDIR (Is a directory) [pid 296] exit_group(0) = ? [ 24.245489][ T296] ext4 filesystem being mounted at /root/syzkaller.5w8R2f/0/file1 supports timestamps until 2038-01-19 (0x7fffffff) [ 24.290840][ T30] audit: type=1400 audit(1734800652.673:72): avc: denied { mounton } for pid=296 comm="syz-executor180" path="/root/syzkaller.5w8R2f/0/file1/file0" dev="loop0" ino=12 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [pid 296] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=296, si_uid=0, si_status=0, si_utime=0, si_stime=6} --- 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, 0x55556f8666f0 /* 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/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EBUSY (Device or resource busy) newfstatat(AT_FDCWD, "./0/file1", {st_mode=S_IFDIR|0755, st_size=4096, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/file1", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EBUSY (Device or resource busy) openat(AT_FDCWD, "./0/file1", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 4 newfstatat(4, "", {st_mode=S_IFDIR|0755, st_size=4096, ...}, AT_EMPTY_PATH) = 0 getdents64(4, 0x55556f86e730 /* 8 entries */, 32768) = 240 umount2("./0/file1/lost+found", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) newfstatat(AT_FDCWD, "./0/file1/lost+found", {st_mode=S_IFDIR|0700, st_size=16384, ...}, AT_SYMLINK_NOFOLLOW) = 0 umount2("./0/file1/lost+found", MNT_FORCE|UMOUNT_NOFOLLOW) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "./0/file1/lost+found", O_RDONLY|O_NONBLOCK|O_CLOEXEC|O_DIRECTORY) = 5 newfstatat(5, "", {st_mode=S_IFDIR|0700, st_size=16384, ...}, AT_EMPTY_PATH) = 0 getdents64(5, 0x55556f876770 /* 2 entries */, 32768) = 48 getdents64(5, 0x55556f876770 /* 0 entries */, 32768) = 0 close(5) = 0 rmdir("./0/file1/lost+found") = 0 [ 24.316184][ T30] audit: type=1400 audit(1734800652.673:73): avc: denied { write } for pid=296 comm="syz-executor180" name="file0" dev="loop0" ino=12 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 24.338479][ T30] audit: type=1400 audit(1734800652.673:74): avc: denied { add_name } for pid=296 comm="syz-executor180" name=".index" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 24.338927][ T295] ------------[ cut here ]------------ [ 24.359250][ T30] audit: type=1400 audit(1734800652.673:75): avc: denied { create } for pid=296 comm="syz-executor180" name=".index" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=dir permissive=1 [ 24.364504][ T295] kernel BUG at fs/namei.c:2933! [ 24.389608][ T295] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 24.395416][ T295] CPU: 0 PID: 295 Comm: syz-executor180 Not tainted 5.15.173-syzkaller-00161-gb4bd207b0380 #0 [ 24.405486][ T295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 [ 24.415391][ T295] RIP: 0010:may_delete+0x6eb/0x6f0 [ 24.420327][ T295] 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 [ 24.439766][ T295] RSP: 0018:ffffc90000977bb0 EFLAGS: 00010293 [ 24.445670][ T295] RAX: ffffffff81be4f0b RBX: ffff888109beb9c0 RCX: ffff8881013ba780 [ 24.453480][ T295] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 24.461297][ T295] RBP: ffffc90000977c18 R08: ffffffff81be489f R09: 0000000000000003 [ 24.469104][ T295] R10: fffff5200012ef58 R11: dffffc0000000001 R12: ffff88810c82caa0 [ 24.476918][ T295] R13: 1ffff11021905954 R14: ffff8881098935f0 R15: dffffc0000000000 [ 24.484727][ T295] FS: 000055556f865380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 24.493584][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.499999][ T295] CR2: 00007fff88aeffb0 CR3: 000000011c391000 CR4: 00000000003506b0 [ 24.507816][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.515624][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.523435][ T295] Call Trace: [ 24.526563][ T295] [ 24.529345][ T295] ? __die_body+0x62/0xb0 [ 24.533504][ T295] ? die+0x88/0xb0 [ 24.537062][ T295] ? do_trap+0x103/0x330 [ 24.541241][ T295] ? may_delete+0x6eb/0x6f0 [ 24.545565][ T295] ? handle_invalid_op+0x95/0xc0 [ 24.550345][ T295] ? may_delete+0x6eb/0x6f0 [ 24.554680][ T295] ? exc_invalid_op+0x32/0x50 [ 24.559194][ T295] ? asm_exc_invalid_op+0x1b/0x20 [ 24.564054][ T295] ? may_delete+0x7f/0x6f0 [ 24.568395][ T295] ? may_delete+0x6eb/0x6f0 [ 24.572739][ T295] ? may_delete+0x6eb/0x6f0 [ 24.577074][ T295] vfs_rmdir+0x32/0x470 [ 24.581066][ T295] incfs_kill_sb+0x113/0x230 [ 24.585491][ T295] deactivate_locked_super+0xad/0x110 [ 24.590700][ T295] deactivate_super+0xbe/0xf0 [ 24.595219][ T295] cleanup_mnt+0x45c/0x510 [ 24.599468][ T295] __cleanup_mnt+0x19/0x20 [ 24.603824][ T295] task_work_run+0x129/0x190 [ 24.608249][ T295] ptrace_notify+0x29e/0x350 [ 24.612674][ T295] ? do_notify_parent+0xa30/0xa30 [ 24.617623][ T295] ? user_path_at_empty+0x14e/0x1a0 [ 24.622659][ T295] ? __x64_sys_umount+0x122/0x170 [ 24.627519][ T295] ? path_umount+0xea0/0xea0 [ 24.631947][ T295] syscall_exit_to_user_mode+0xa3/0x160 [ 24.637325][ T295] do_syscall_64+0x47/0xb0 [ 24.641578][ T295] ? clear_bhb_loop+0x35/0x90 [ 24.646093][ T295] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 24.651903][ T295] RIP: 0033:0x7f39f7af2547 [ 24.656163][ T295] 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 [ 24.675688][ T295] RSP: 002b:00007ffe623fbbd8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 24.683938][ T295] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f39f7af2547 [ 24.692011][ T295] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffe623fbc90 [ 24.699814][ T295] RBP: 00007ffe623fbc90 R08: 0000000000000000 R09: 0000000000000000 [ 24.707625][ T295] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffe623fcd80 [ 24.715435][ T295] R13: 000055556f86e700 R14: 431bde82d7b634db R15: 00007ffe623fde10 [ 24.723346][ T295] [ 24.726199][ T295] Modules linked in: [ 24.730034][ T295] ---[ end trace 02c5ea9450d0ee78 ]--- [ 24.735255][ T295] RIP: 0010:may_delete+0x6eb/0x6f0 [ 24.740572][ T295] 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 [ 24.760107][ T295] RSP: 0018:ffffc90000977bb0 EFLAGS: 00010293 [ 24.766012][ T295] RAX: ffffffff81be4f0b RBX: ffff888109beb9c0 RCX: ffff8881013ba780 [ 24.773866][ T295] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 24.781725][ T295] RBP: ffffc90000977c18 R08: ffffffff81be489f R09: 0000000000000003 [ 24.789537][ T295] R10: fffff5200012ef58 R11: dffffc0000000001 R12: ffff88810c82caa0 [ 24.797358][ T295] R13: 1ffff11021905954 R14: ffff8881098935f0 R15: dffffc0000000000 [ 24.805207][ T295] FS: 000055556f865380(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 [ 24.814115][ T295] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.820590][ T295] CR2: 00007fff88aeffb0 CR3: 000000011c391000 CR4: 00000000003506b0 [ 24.828516][ T295] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.836402][ T295] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.844199][ T295] Kernel panic - not syncing: Fatal exception [ 24.850322][ T295] Kernel Offset: disabled [ 24.854460][ T295] Rebooting in 86400 seconds..