------------[ cut here ]------------
UBSAN: shift-out-of-bounds in lib/radix-tree.c:88:31
shift exponent 128 is too large for 64-bit type 'unsigned long'
CPU: 0 UID: 0 PID: 5643 Comm: syz.5.21 Not tainted 6.14.0-rc2-syzkaller-00303-gad1b832bf1cf #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 ubsan_epilogue lib/ubsan.c:231 [inline]
 __ubsan_handle_shift_out_of_bounds+0x3c8/0x420 lib/ubsan.c:468
 radix_tree_descend lib/radix-tree.c:88 [inline]
 __radix_tree_lookup lib/radix-tree.c:766 [inline]
 radix_tree_delete_item+0x1df/0x3f0 lib/radix-tree.c:1420
 free_pid+0x1a6/0x290 kernel/pid.c:155
 __unhash_process kernel/exit.c:128 [inline]
 __exit_signal kernel/exit.c:200 [inline]
 release_task+0xdb7/0x1830 kernel/exit.c:257
 exit_notify kernel/exit.c:775 [inline]
 do_exit+0x1afc/0x28e0 kernel/exit.c:958
 do_group_exit+0x207/0x2c0 kernel/exit.c:1087
 get_signal+0x168c/0x1720 kernel/signal.c:3036
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:337
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0xce/0x340 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd3eff8cde9
Code: Unable to access opcode bytes at 0x7fd3eff8cdbf.
RSP: 002b:00007fd3f0db20e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: 0000000000000001 RBX: 00007fd3f01a5fa8 RCX: 00007fd3eff8cde9
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007fd3f01a5fac
RBP: 00007fd3f01a5fa0 R08: 7fffffffffffffff R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 00007fd3f01a5fac
R13: 0000000000000000 R14: 00007ffed20cbda0 R15: 00007ffed20cbe88
 </TASK>
---[ end trace ]---