./strace-static-x86_64 -e \!wait4,clock_nanosleep,nanosleep -s 100 -x -f ./syz-executor3324516861 <...> Warning: Permanently added '10.128.1.66' (ED25519) to the list of known hosts. execve("./syz-executor3324516861", ["./syz-executor3324516861"], 0x7ffcac9237b0 /* 10 vars */) = 0 brk(NULL) = 0x5555734ac000 brk(0x5555734acd00) = 0x5555734acd00 arch_prctl(ARCH_SET_FS, 0x5555734ac380) = 0 set_tid_address(0x5555734ac650) = 289 set_robust_list(0x5555734ac660, 24) = 0 rseq(0x5555734acca0, 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-executor3324516861", 4096) = 28 getrandom("\xae\xe1\xd7\x25\x2f\xad\x6c\x4e", 8, GRND_NONBLOCK) = 8 brk(NULL) = 0x5555734acd00 brk(0x5555734cdd00) = 0x5555734cdd00 brk(0x5555734ce000) = 0x5555734ce000 mprotect(0x7f5e0981e000, 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 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) = 0x7f5e01369000 [ 22.490445][ T28] audit: type=1400 audit(1749888175.099:64): avc: denied { execmem } for pid=289 comm="syz-executor332" 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(0x7f5e01369000, 138412032) = 0 openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 4 ioctl(4, LOOP_SET_FD, 3) = 0 close(3) = 0 close(4) = 0 mkdir("./file0", 0777) = 0 [ 22.577168][ T28] audit: type=1400 audit(1749888175.179:65): avc: denied { read write } for pid=289 comm="syz-executor332" name="loop0" dev="devtmpfs" ino=118 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 22.577890][ T289] loop0: detected capacity change from 0 to 40427 [ 22.601409][ T28] audit: type=1400 audit(1749888175.179:66): avc: denied { open } for pid=289 comm="syz-executor332" path="/dev/loop0" dev="devtmpfs" ino=118 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 22.617495][ T289] ================================================================================ [ 22.635012][ T28] audit: type=1400 audit(1749888175.179:67): avc: denied { ioctl } for pid=289 comm="syz-executor332" path="/dev/loop0" dev="devtmpfs" ino=118 ioctlcmd=0x4c00 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:fixed_disk_device_t tclass=blk_file permissive=1 [ 22.641417][ T289] UBSAN: shift-out-of-bounds in fs/f2fs/super.c:919:5 [ 22.666913][ T28] audit: type=1400 audit(1749888175.219:68): avc: denied { mounton } for pid=289 comm="syz-executor332" path="/root/file0" dev="sda1" ino=2024 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:user_home_t tclass=dir permissive=1 [ 22.673950][ T289] shift exponent 152 is too large for 64-bit type 'unsigned long' [ 22.704135][ T289] CPU: 1 PID: 289 Comm: syz-executor332 Not tainted 6.1.138-syzkaller-00009-g6246d345f550 #0 [ 22.714289][ T289] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 [ 22.724356][ T289] Call Trace: [ 22.727643][ T289] [ 22.730560][ T289] __dump_stack+0x21/0x24 [ 22.734892][ T289] dump_stack_lvl+0xee/0x150 [ 22.739466][ T289] ? __cfi_dump_stack_lvl+0x8/0x8 [ 22.744473][ T289] ? __kasan_slab_free+0x11/0x20 [ 22.749395][ T289] dump_stack+0x15/0x24 [ 22.753535][ T289] ubsan_epilogue+0xe/0x40 [ 22.757931][ T289] __ubsan_handle_shift_out_of_bounds+0x37c/0x400 [ 22.764342][ T289] ? match_int+0x13c/0x190 [ 22.768747][ T289] parse_options+0x4829/0x4830 [ 22.773496][ T289] ? do_new_mount+0x25a/0xa20 [ 22.778160][ T289] ? default_options+0xd90/0xd90 [ 22.783081][ T289] ? f2fs_fill_super+0x2245/0x6c70 [ 22.788179][ T289] ? memcpy+0x56/0x70 [ 22.792151][ T289] f2fs_fill_super+0x2281/0x6c70 [ 22.797084][ T289] ? __cfi_f2fs_fill_super+0x10/0x10 [ 22.802357][ T289] ? mutex_unlock+0x89/0x220 [ 22.806932][ T289] ? set_blocksize+0x1df/0x360 [ 22.811697][ T289] ? sb_set_blocksize+0xaa/0xf0 [ 22.816548][ T289] ? __cfi_f2fs_fill_super+0x10/0x10 [ 22.821818][ T289] mount_bdev+0x2bc/0x3f0 [ 22.826163][ T289] ? __cfi_f2fs_fill_super+0x10/0x10 [ 22.831432][ T289] f2fs_mount+0x34/0x40 [ 22.835584][ T289] legacy_get_tree+0xfe/0x1a0 [ 22.840247][ T289] ? __cfi_f2fs_mount+0x10/0x10 [ 22.845085][ T289] vfs_get_tree+0x9a/0x270 [ 22.849490][ T289] do_new_mount+0x25a/0xa20 [ 22.853979][ T289] path_mount+0x675/0x1010 [ 22.858394][ T289] ? user_path_at_empty+0x161/0x1c0 [ 22.863584][ T289] __se_sys_mount+0x318/0x380 [ 22.868246][ T289] ? __x64_sys_mount+0xd0/0xd0 [ 22.873081][ T289] ? fpregs_restore_userregs+0x128/0x260 [ 22.878700][ T289] __x64_sys_mount+0xbf/0xd0 [ 22.883276][ T289] x64_sys_call+0x65d/0x9a0 [ 22.887764][ T289] do_syscall_64+0x4c/0xa0 [ 22.892169][ T289] ? clear_bhb_loop+0x15/0x70 [ 22.896831][ T289] ? clear_bhb_loop+0x15/0x70 [ 22.901489][ T289] entry_SYSCALL_64_after_hwframe+0x68/0xd2 [ 22.907367][ T289] RIP: 0033:0x7f5e097a7cfa [ 22.911806][ T289] 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 [ 22.931400][ T289] RSP: 002b:00007ffe44a20618 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5 [ 22.939793][ T289] RAX: ffffffffffffffda RBX: 00007ffe44a20630 RCX: 00007f5e097a7cfa [ 22.947746][ T289] RDX: 0000200000000140 RSI: 0000200000000000 RDI: 00007ffe44a20630 [ 22.955697][ T289] RBP: 0000200000000000 R08: 00007ffe44a20670 R09: 000000000000550e [ 22.963647][ T289] R10: 0000000000000000 R11: 0000000000000286 R12: 0000200000000140 mount("/dev/loop0", "./file0", "f2fs", 0, "nodiscard,jqfmt=vfsold,io_bits=00000000000000000230,alloc_mode=reuse,inline_xattr,disable_roll_forwa"...) = -1 EINVAL (Invalid argument) openat(AT_FDCWD, "/dev/loop0", O_RDWR) = 3 [ 22.971601][ T289] R13: 00007ffe44a20670 R14: 0000000000000003 R15: 0000000000000000 [ 22.979561][ T289] [ 22.982686][ T289] ================================================================================ [ 22.992009][ T289] F2FS-fs (loop0): Not support 16777216, larger than 256 ioctl(3, LOOP_CLR_FD) = 0 close(3) = 0 exit_group(0) = ? +++ exited with 0 +++