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UBSAN: shift-out-of-bounds in fs/f2fs/super.c:919:5
shift exponent 75 is too large for 64-bit type 'unsigned long'
CPU: 1 PID: 7077 Comm: syz.0.592 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/18/2026
Call Trace:
 <TASK>
 dump_stack_lvl+0x188/0x24e lib/dump_stack.c:106
 ubsan_epilogue+0xa/0x30 lib/ubsan.c:151
 __ubsan_handle_shift_out_of_bounds+0x37c/0x400 lib/ubsan.c:321
 parse_options+0x4725/0x4730 fs/f2fs/super.c:919
 f2fs_fill_super+0x22aa/0x6b40 fs/f2fs/super.c:4237
 mount_bdev+0x287/0x3c0 fs/super.c:1443
 legacy_get_tree+0xe6/0x180 fs/fs_context.c:632
 vfs_get_tree+0x88/0x270 fs/super.c:1573
 do_new_mount+0x24a/0xa40 fs/namespace.c:3078
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount+0x2e3/0x3d0 fs/namespace.c:3606
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc38739da8a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc3881f7e58 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fc3881f7ee0 RCX: 00007fc38739da8a
RDX: 0000200000000040 RSI: 0000200000000000 RDI: 00007fc3881f7ea0
RBP: 0000200000000040 R08: 00007fc3881f7ee0 R09: 000000000000401e
R10: 000000000000401e R11: 0000000000000246 R12: 0000200000000000
R13: 00007fc3881f7ea0 R14: 0000000000005536 R15: 0000200000000140
 </TASK>
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