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UBSAN: shift-out-of-bounds in fs/befs/super.c:96:9
shift exponent 3229888891 is too large for 32-bit type 'int'
CPU: 0 PID: 16324 Comm: syz-executor.4 Not tainted 6.6.0-rc1-next-20230912-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/04/2023
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106
 ubsan_epilogue lib/ubsan.c:217 [inline]
 __ubsan_handle_shift_out_of_bounds+0x27a/0x600 lib/ubsan.c:387
 befs_check_sb.cold+0x19/0x6f fs/befs/super.c:96
 befs_fill_super+0x9e6/0x1140 fs/befs/linuxvfs.c:873
 mount_bdev+0x1f3/0x2e0 fs/super.c:1632
 legacy_get_tree+0x109/0x220 fs/fs_context.c:638
 vfs_get_tree+0x8c/0x370 fs/super.c:1753
 do_new_mount fs/namespace.c:3335 [inline]
 path_mount+0x1492/0x1ed0 fs/namespace.c:3662
 do_mount fs/namespace.c:3675 [inline]
 __do_sys_mount fs/namespace.c:3884 [inline]
 __se_sys_mount fs/namespace.c:3861 [inline]
 __x64_sys_mount+0x293/0x310 fs/namespace.c:3861
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7faceaa7e1ea
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 09 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007faceb783ee8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007faceb783f80 RCX: 00007faceaa7e1ea
RDX: 0000000020009e00 RSI: 0000000020000040 RDI: 00007faceb783f40
RBP: 0000000020009e00 R08: 00007faceb783f80 R09: 0000000003008401
R10: 0000000003008401 R11: 0000000000000202 R12: 0000000020000040
R13: 00007faceb783f40 R14: 0000000000009e14 R15: 0000000020000000
 </TASK>
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