and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= ------------[ cut here ]------------ UBSAN: shift-out-of-bounds in fs/minix/inode.c:399:57 shift exponent 22784 is too large for 64-bit type 'unsigned long' CPU: 0 UID: 0 PID: 5854 Comm: syz.0.16 Not tainted 6.15.0-rc3-syzkaller-00094-g02ddfb981de8 #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 ubsan_epilogue+0xa/0x40 lib/ubsan.c:231 __ubsan_handle_shift_out_of_bounds+0x386/0x410 lib/ubsan.c:492 minix_statfs+0x31c/0x340 fs/minix/inode.c:399 statfs_by_dentry fs/statfs.c:66 [inline] vfs_get_fsid+0x199/0x270 fs/statfs.c:77 fanotify_test_fsid+0x88/0x3c0 fs/notify/fanotify/fanotify_user.c:1690 do_fanotify_mark+0x9c4/0xfa0 fs/notify/fanotify/fanotify_user.c:1985 __do_sys_fanotify_mark fs/notify/fanotify/fanotify_user.c:2067 [inline] __se_sys_fanotify_mark fs/notify/fanotify/fanotify_user.c:2063 [inline] __x64_sys_fanotify_mark+0xb5/0xd0 fs/notify/fanotify/fanotify_user.c:2063 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f375df8d169 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f375edc8038 EFLAGS: 00000246 ORIG_RAX: 000000000000012d RAX: ffffffffffffffda RBX: 00007f375e1a5fa0 RCX: 00007f375df8d169 RDX: 000000000800003e RSI: 0000000000000001 RDI: 0000000000000005 RBP: 00007f375e00e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000004 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f375e1a5fa0 R15: 00007ffcd0e4b748 ---[ end trace ]---