./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor1422523977 <...> Warning: Permanently added '10.128.0.39' (ED25519) to the list of known hosts. execve("./syz-executor1422523977", ["./syz-executor1422523977"], 0x7ffc2dda3080 /* 10 vars */) = 0 brk(NULL) = 0x55557f875000 brk(0x55557f875d00) = 0x55557f875d00 arch_prctl(ARCH_SET_FS, 0x55557f875380) = 0 set_tid_address(0x55557f875650) = 292 set_robust_list(0x55557f875660, 24) = 0 rseq(0x55557f875ca0, 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-executor1422523977", 4096) = 28 getrandom("\x73\x53\x98\xff\x96\xc1\x6e\x28", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x55557f875d00 brk(0x55557f896d00) = 0x55557f896d00 brk(0x55557f897000) = 0x55557f897000 mprotect(0x7f36f9355000, 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 write(1, "executing program\n", 18executing program ) = 18 memfd_create("syzkaller", 0) = 3 mmap(NULL, 138412032, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f36f0ea0000 [ 20.746762][ T30] audit: type=1400 audit(1738378279.754:66): avc: denied { execmem } for pid=292 comm="syz-executor142" scontext=root:sysadm_r:sysadm_t tcontext=root:sysadm_r:sysadm_t tclass=process permissive=1 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"..., 20699119) = 20699119 munmap(0x7f36f0ea0000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 [ 20.842277][ T30] audit: type=1400 audit(1738378279.854:67): avc: denied { read write } for pid=292 comm="syz-executor142" 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 [ 20.843288][ T292] loop0: detected capacity change from 0 to 40427 [ 20.866335][ T30] audit: type=1400 audit(1738378279.854:68): avc: denied { open } for pid=292 comm="syz-executor142" 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 [ 20.896413][ T30] audit: type=1400 audit(1738378279.854:69): avc: denied { ioctl } for pid=292 comm="syz-executor142" path="/dev/loop0" dev="devtmpfs" ino=112 ioctlcmd=0x4c00 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 close(4) = 0 mkdir("./file2", 0777) = 0 [ 21.011388][ T30] audit: type=1400 audit(1738378280.024:70): avc: denied { mounton } for pid=292 comm="syz-executor142" path="/root/file2" dev="sda1" ino=1927 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 21.070961][ T292] ================================================================================ [ 21.080147][ T292] UBSAN: shift-out-of-bounds in fs/f2fs/super.c:901:5 [ 21.086671][ T292] shift exponent 105 is too large for 32-bit type 'int' [ 21.093477][ T292] CPU: 0 PID: 292 Comm: syz-executor142 Not tainted 5.15.176-syzkaller-00066-gd1a25a6a4b3b #0 [ 21.103495][ T292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 [ 21.113396][ T292] Call Trace: [ 21.116526][ T292] [ 21.119291][ T292] dump_stack_lvl+0x151/0x1c0 [ 21.123809][ T292] ? io_uring_drop_tctx_refs+0x190/0x190 [ 21.129272][ T292] ? slab_free_freelist_hook+0xbd/0x190 [ 21.134654][ T292] dump_stack+0x15/0x20 [ 21.138646][ T292] __ubsan_handle_shift_out_of_bounds+0x3bf/0x420 [ 21.144901][ T292] ? ____kasan_kmalloc+0xed/0x110 [ 21.149758][ T292] parse_options+0x460f/0x4620 [ 21.154354][ T292] ? do_syscall_64+0x3b/0xb0 [ 21.158782][ T292] ? entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 21.164699][ T292] ? default_options+0xa20/0xa20 [ 21.169458][ T292] ? memcpy+0x56/0x70 [ 21.173275][ T292] f2fs_fill_super+0x2e83/0x8190 [ 21.178076][ T292] ? kill_f2fs_super+0x3c0/0x3c0 [ 21.182838][ T292] ? vscnprintf+0x80/0x80 [ 21.186989][ T292] ? set_blocksize+0x1f0/0x380 [ 21.191589][ T292] ? sb_set_blocksize+0xa8/0xf0 [ 21.196275][ T292] mount_bdev+0x282/0x3b0 [ 21.200443][ T292] ? kill_f2fs_super+0x3c0/0x3c0 [ 21.205218][ T292] f2fs_mount+0x34/0x40 [ 21.209215][ T292] legacy_get_tree+0xf1/0x190 [ 21.213739][ T292] ? trace_raw_output_f2fs__rw_end+0x110/0x110 [ 21.219745][ T292] vfs_get_tree+0x88/0x290 [ 21.223961][ T292] do_new_mount+0x2ba/0xb30 [ 21.228465][ T292] ? do_move_mount_old+0x160/0x160 [ 21.233405][ T292] ? security_capable+0x87/0xb0 [ 21.238095][ T292] ? ns_capable+0x89/0xe0 [ 21.242301][ T292] path_mount+0x671/0x1070 [ 21.246513][ T292] __se_sys_mount+0x2c4/0x3b0 [ 21.251028][ T292] ? __x64_sys_mount+0xd0/0xd0 [ 21.255626][ T292] ? debug_smp_processor_id+0x17/0x20 [ 21.260834][ T292] __x64_sys_mount+0xbf/0xd0 [ 21.265261][ T292] x64_sys_call+0x49d/0x9a0 [ 21.269646][ T292] do_syscall_64+0x3b/0xb0 [ 21.273855][ T292] ? clear_bhb_loop+0x35/0x90 [ 21.278394][ T292] entry_SYSCALL_64_after_hwframe+0x66/0xd0 [ 21.284102][ T292] RIP: 0033:0x7f36f92decfa [ 21.288345][ T292] Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 21.307791][ T292] RSP: 002b:00007ffd4b528848 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 21.316035][ T292] RAX: ffffffffffffffda RBX: 00007ffd4b528860 RCX: 00007f36f92decfa [ 21.324365][ T292] RDX: 0000000020000040 RSI: 00000000200000c0 RDI: 00007ffd4b528860 [ 21.332183][ T292] RBP: 0000000000000004 R08: 00007ffd4b5288a0 R09: 00000000000054fa [ 21.340252][ T292] R10: 0000000000000000 R11: 0000000000000286 R12: 0000000000000000 [ 21.348059][ T292] R13: 00007ffd4b5288a0 R14: 0000000000000003 R15: 00000000013bd7ef [ 21.356137][ T292] [ 21.359060][ T292] ================================================================================ [ 21.368280][ T292] F2FS-fs (loop0): Not support 512, larger than 256 mount("/dev/loop0", "./file2", "f2fs", 0, "nouser_xattr,active_logs=4,active_logs=4,noquota,noflush_merge,io_bits=00000000000000000151,prjjquot"...) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 exit_group(0) = ? +++ exited with 0 +++