./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3037997236 <...> [ 17.933763][ T23] audit: type=1400 audit(1744215603.650:62): avc: denied { noatsecure } for pid=290 comm="sshd" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 17.939311][ T23] audit: type=1400 audit(1744215603.650:63): avc: denied { write } for pid=290 comm="sh" path="pipe:[10112]" dev="pipefs" ino=10112 scontext=root:sysadm_r:sysadm_t tcontext=system_u:system_r:sshd_t tclass=fifo_file permissive=1 [ 17.953731][ T23] audit: type=1400 audit(1744215603.650:64): avc: denied { rlimitinh } for pid=290 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 17.972542][ T23] audit: type=1400 audit(1744215603.650:65): avc: denied { siginh } for pid=290 comm="sh" scontext=system_u:system_r:sshd_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 [ 20.047751][ T291] sshd (291) used greatest stack depth: 20856 bytes left Warning: Permanently added '10.128.0.196' (ED25519) to the list of known hosts. execve("./syz-executor3037997236", ["./syz-executor3037997236"], 0x7ffe1438ec20 /* 10 vars */) = 0 brk(NULL) = 0x55558e434000 brk(0x55558e434d00) = 0x55558e434d00 arch_prctl(ARCH_SET_FS, 0x55558e434380) = 0 set_tid_address(0x55558e434650) = 361 set_robust_list(0x55558e434660, 24) = 0 rseq(0x55558e434ca0, 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-executor3037997236", 4096) = 28 getrandom("\x06\x1c\x98\xd8\xf8\xdb\xd2\xaf", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55558e434d00 brk(0x55558e455d00) = 0x55558e455d00 brk(0x55558e456000) = 0x55558e456000 mprotect(0x7fe8a0e20000, 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, 0) = 0x200000000000 mmap(0x200001000000, 4096, PROT_NONE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x200001000000 mkdir("./syzkaller.sAD7yn", 0700) = 0 chmod("./syzkaller.sAD7yn", 0777) = 0 chdir("./syzkaller.sAD7yn") = 0 mkdir("./0", 0777) = 0 [ 28.601069][ T23] audit: type=1400 audit(1744215614.320:66): avc: denied { execmem } for pid=361 comm="syz-executor303" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = -1 ENXIO (No such device or address) [ 28.649451][ T23] audit: type=1400 audit(1744215614.370:67): avc: denied { read write } for pid=361 comm="syz-executor303" name="loop0" dev="devtmpfs" ino=9411 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 28.673729][ T23] audit: type=1400 audit(1744215614.370:68): avc: denied { open } for pid=361 comm="syz-executor303" path="/dev/loop0" dev="devtmpfs" ino=9411 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 close(3) = 0 clone(child_stack=NULL, flags=CLONE_CHILD_CLEARTID|CLONE_CHILD_SETTID|SIGCHLD, child_tidptr=0x55558e434650) = 363 ./strace-static-x86_64: Process 363 attached [pid 363] set_robust_list(0x55558e434660, 24) = 0 [pid 363] chdir("./0") = 0 [pid 363] prctl(PR_SET_PDEATHSIG, SIGKILL) = 0 [pid 363] setpgid(0, 0) = 0 [pid 363] openat(AT_FDCWD, "/proc/self/oom_score_adj", O_WRONLY|O_CLOEXEC) = 3 [pid 363] write(3, "1000", 4) = 4 [pid 363] close(3) = 0 [pid 363] symlink("/dev/binderfs", "./binderfs") = 0 [pid 363] write(1, "executing program\n", 18executing program ) = 18 [pid 363] memfd_create("syzkaller", 0) = 3 [pid 363] mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7fe89896d000 [pid 363] 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 363] munmap(0x7fe89896d000, 138412032) = 0 [pid 363] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 363] ioctl(4, LOOP_SET_FD, 3) = 0 [pid 363] close(3) = 0 [pid 363] close(4) = 0 [pid 363] mkdir("./file1", 0777) = 0 [ 28.698216][ T23] audit: type=1400 audit(1744215614.420:69): avc: denied { ioctl } for pid=361 comm="syz-executor303" path="/dev/loop0" dev="devtmpfs" ino=9411 ioctlcmd=0x4c01 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 28.728824][ T363] ====================================================== [ 28.728824][ T363] WARNING: the mand mount option is being deprecated and [ 28.728824][ T363] will be removed in v5.15! [ 28.728824][ T363] ====================================================== [ 28.754954][ T23] audit: type=1400 audit(1744215614.450:70): avc: denied { mounton } for pid=363 comm="syz-executor303" path="/root/syzkaller.sAD7yn/0/file1" dev="sda1" ino=1930 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 28.782766][ T363] EXT4-fs (loop0): Quota format mount options ignored when QUOTA feature is enabled [ 28.804616][ T363] EXT4-fs (loop0): 1 orphan inode deleted [ 28.810157][ T363] EXT4-fs (loop0): mounted filesystem without journal. Opts: errors=remount-ro,nodiscard,noquota,jqfmt=vfsv0,noblock_validity,resgid=0x0000000000000000,sysvgroups,usrquota,usrquota, [ 28.828203][ T23] audit: type=1400 audit(1744215614.550:71): avc: denied { mount } for pid=363 comm="syz-executor303" name="/" dev="loop0" ino=2 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fs_t tclass=filesystem permissive=1 [pid 363] mount("/dev/loop0", "./file1", "ext4", MS_MANDLOCK|MS_LAZYTIME, "errors=remount-ro,nodiscard,noquota,jqfmt=vfsv0,noblock_validity,resgid=0x0000000000000000,sysvgroup"...) = 0 [pid 363] openat(AT_FDCWD, "./file1", O_RDONLY|O_DIRECTORY) = 3 [pid 363] chdir("./file1") = 0 [pid 363] openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 [pid 363] ioctl(4, LOOP_CLR_FD) = 0 [pid 363] close(4) = 0 [pid 363] mount("./file0", "./file0", "incremental-fs", MS_NOSUID, NULL) = 0 [pid 363] openat(AT_FDCWD, "./file2", O_RDWR|O_CREAT|O_NONBLOCK|O_SYNC|O_DIRECT|O_CLOEXEC|FASYNC, 0507) = -1 EISDIR (Is a directory) [pid 363] exit_group(0) = ? [pid 363] +++ exited with 0 +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_EXITED, si_pid=363, si_uid=0, si_status=0, si_utime=0, si_stime=5} --- 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, 0x55558e4356f0 /* 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, 0x55558e43d730 /* 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, 0x55558e445770 /* 2 entries */, 32768) = 48 getdents64(5, 0x55558e445770 /* 0 entries */, 32768) = 0 close(5) = 0 rmdir("./0/file1/lost+found") = 0 [ 28.832015][ T363] ext4 filesystem being mounted at /root/syzkaller.sAD7yn/0/file1 supports timestamps until (%ptR?) (0x7fffffff) [ 28.870962][ T23] audit: type=1400 audit(1744215614.590:72): avc: denied { mounton } for pid=363 comm="syz-executor303" path="/root/syzkaller.sAD7yn/0/file1/file0" dev="loop0" ino=12 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 28.896020][ T23] audit: type=1400 audit(1744215614.590:73): avc: denied { write } for pid=363 comm="syz-executor303" name="file0" dev="loop0" ino=12 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 28.918067][ T23] audit: type=1400 audit(1744215614.590:74): avc: denied { add_name } for pid=363 comm="syz-executor303" name=".index" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:unlabeled_t tclass=dir permissive=1 [ 28.918593][ T361] ------------[ cut here ]------------ [ 28.938810][ T23] audit: type=1400 audit(1744215614.600:75): avc: denied { create } for pid=363 comm="syz-executor303" name=".index" scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:unlabeled_t tclass=dir permissive=1 [ 28.944020][ T361] kernel BUG at fs/namei.c:2894! [ 28.964285][ T361] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 28.974924][ T361] CPU: 1 PID: 361 Comm: syz-executor303 Not tainted 5.4.290-syzkaller-00002-g41adfeb3d639 #0 [ 28.984899][ T361] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 [ 28.994832][ T361] RIP: 0010:may_delete+0x750/0x760 [ 28.999744][ T361] Code: 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c e8 fd ff ff 4c 89 e7 e8 31 0d f6 ff e9 db fd ff ff e8 07 23 c6 ff 0f 0b e8 00 23 c6 ff <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 41 56 53 48 89 fb [ 29.019183][ T361] RSP: 0018:ffff8881ee54fb28 EFLAGS: 00010293 [ 29.025086][ T361] RAX: ffffffff819e2800 RBX: ffff8881f109b238 RCX: ffff8881ee558fc0 [ 29.032898][ T361] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 29.040715][ T361] RBP: ffff8881f124a8b0 R08: ffffffff819e2128 R09: 0000000000000003 [ 29.048520][ T361] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881f109b220 [ 29.056329][ T361] R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8881dcf43490 [ 29.064142][ T361] FS: 000055558e434380(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 [ 29.072905][ T361] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.079345][ T361] CR2: 000055558e44d778 CR3: 00000001df824000 CR4: 00000000003406a0 [ 29.087145][ T361] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.094956][ T361] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.102758][ T361] Call Trace: [ 29.105906][ T361] ? __die+0xb4/0x100 [ 29.109754][ T361] ? die+0x26/0x50 [ 29.113269][ T361] ? do_trap+0x1e7/0x340 [ 29.117347][ T361] ? may_delete+0x750/0x760 [ 29.121687][ T361] ? may_delete+0x750/0x760 [ 29.126028][ T361] ? do_invalid_op+0xfb/0x110 [ 29.130538][ T361] ? may_delete+0x750/0x760 [ 29.134971][ T361] ? invalid_op+0x1e/0x30 [ 29.139154][ T361] ? may_delete+0x78/0x760 [ 29.143383][ T361] ? may_delete+0x750/0x760 [ 29.147725][ T361] ? may_delete+0x750/0x760 [ 29.152064][ T361] ? may_delete+0x750/0x760 [ 29.156403][ T361] vfs_rmdir+0x29/0x3c0 [ 29.160398][ T361] incfs_kill_sb+0x105/0x200 [ 29.164833][ T361] deactivate_locked_super+0xa8/0x110 [ 29.170031][ T361] deactivate_super+0x1e2/0x2a0 [ 29.174730][ T361] ? deactivate_locked_super+0x110/0x110 [ 29.180214][ T361] ? fast_dput+0x7a/0x280 [ 29.184353][ T361] cleanup_mnt+0x44e/0x500 [ 29.188703][ T361] task_work_run+0x140/0x170 [ 29.193146][ T361] ptrace_notify+0x29e/0x350 [ 29.197554][ T361] ? do_notify_parent+0xa10/0xa10 [ 29.202404][ T361] ? ksys_umount+0x3a6/0x410 [ 29.206840][ T361] ? namespace_unlock+0x4e0/0x4e0 [ 29.211728][ T361] ? fpu__clear+0x3c0/0x3c0 [ 29.216038][ T361] syscall_slow_exit_work+0x167/0x400 [ 29.221238][ T361] do_syscall_64+0x19d/0x1c0 [ 29.225666][ T361] entry_SYSCALL_64_after_hwframe+0x5c/0xc1 [ 29.231413][ T361] RIP: 0033:0x7fe8a0dad547 [ 29.235646][ T361] 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 [ 29.255083][ T361] RSP: 002b:00007ffc4f20b7e8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a6 [ 29.263330][ T361] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fe8a0dad547 [ 29.271137][ T361] RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffc4f20b8a0 [ 29.278953][ T361] RBP: 00007ffc4f20b8a0 R08: 0000000000000000 R09: 0000000000000000 [ 29.286772][ T361] R10: 00000000ffffffff R11: 0000000000000206 R12: 00007ffc4f20c990 [ 29.294575][ T361] R13: 000055558e43d700 R14: 431bde82d7b634db R15: 00007ffc4f20da20 [ 29.302383][ T361] Modules linked in: [ 29.308142][ T361] ---[ end trace 5b2b22ecde74ba06 ]--- [ 29.313464][ T361] RIP: 0010:may_delete+0x750/0x760 [ 29.318361][ T361] Code: 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c e8 fd ff ff 4c 89 e7 e8 31 0d f6 ff e9 db fd ff ff e8 07 23 c6 ff 0f 0b e8 00 23 c6 ff <0f> 0b 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 41 56 53 48 89 fb [ 29.337951][ T361] RSP: 0018:ffff8881ee54fb28 EFLAGS: 00010293 [ 29.343925][ T361] RAX: ffffffff819e2800 RBX: ffff8881f109b238 RCX: ffff8881ee558fc0 [ 29.351707][ T361] RDX: 0000000000000000 RSI: 0000000000200000 RDI: 0000000000000000 [ 29.359548][ T361] RBP: ffff8881f124a8b0 R08: ffffffff819e2128 R09: 0000000000000003 [ 29.367351][ T361] R10: ffffffffffffffff R11: dffffc0000000001 R12: ffff8881f109b220 [ 29.375172][ T361] R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8881dcf43490 [ 29.382976][ T361] FS: 000055558e434380(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 [ 29.391806][ T361] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.398255][ T361] CR2: 00007ffff94df518 CR3: 00000001df824000 CR4: 00000000003406b0 [ 29.406062][ T361] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.413877][ T361] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.421790][ T361] Kernel panic - not syncing: Fatal exception [ 29.427903][ T361] Kernel Offset: disabled [ 29.432029][ T361] Rebooting in 86400 seconds..