------------[ cut here ]------------
UBSAN: shift-out-of-bounds in fs/bcachefs/bkey.c:664:22
shift exponent 96 is too large for 64-bit type 'unsigned long long'
CPU: 0 PID: 6258 Comm: syz-executor.2 Not tainted 6.10.0-rc1-syzkaller-00296-g89be4025b0db #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
 ubsan_epilogue lib/ubsan.c:231 [inline]
 __ubsan_handle_shift_out_of_bounds+0x3c8/0x420 lib/ubsan.c:468
 bch2_bkey_format_invalid+0x74d/0x790 fs/bcachefs/bkey.c:664
 validate_bset+0x16ab/0x25b0 fs/bcachefs/btree_io.c:822
 bch2_btree_node_read_done+0x21e1/0x6750 fs/bcachefs/btree_io.c:1140
 btree_node_read_work+0x68b/0x1260 fs/bcachefs/btree_io.c:1345
 bch2_btree_node_read+0x2433/0x2a10
 __bch2_btree_root_read fs/bcachefs/btree_io.c:1769 [inline]
 bch2_btree_root_read+0x61e/0x970 fs/bcachefs/btree_io.c:1793
 read_btree_roots+0x22d/0x7b0 fs/bcachefs/recovery.c:475
 bch2_fs_recovery+0x2346/0x3720 fs/bcachefs/recovery.c:803
 bch2_fs_start+0x356/0x5b0 fs/bcachefs/super.c:1031
 bch2_fs_open+0xa8d/0xdf0 fs/bcachefs/super.c:2123
 bch2_mount+0x6c0/0x1320 fs/bcachefs/fs.c:1917