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UBSAN: shift-out-of-bounds in kernel/sched/fair.c:7712:14
shift exponent 112 is too large for 64-bit type 'long unsigned int'
CPU: 1 PID: 47 Comm: kworker/u17:3 Not tainted 5.12.0-rc8-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
Workqueue: wg-kex-wg2 wg_packet_handshake_send_worker
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:79 [inline]
 dump_stack+0x141/0x1d7 lib/dump_stack.c:120
 ubsan_epilogue+0xb/0x5a lib/ubsan.c:148
 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x181 lib/ubsan.c:327
 detach_tasks kernel/sched/fair.c:7712 [inline]
 load_balance.cold+0x1d/0x2e kernel/sched/fair.c:9641
 rebalance_domains+0x5cc/0xdb0 kernel/sched/fair.c:10029
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:345
 invoke_softirq kernel/softirq.c:221 [inline]
 __irq_exit_rcu kernel/softirq.c:422 [inline]
 irq_exit_rcu+0x134/0x200 kernel/softirq.c:434
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:632
RIP: 0010:fproduct_sum_scalar_multiplication_ lib/crypto/curve25519-hacl64.c:82 [inline]
RIP: 0010:fmul_mul_shift_reduce_ lib/crypto/curve25519-hacl64.c:179 [inline]
RIP: 0010:fmul_fmul lib/crypto/curve25519-hacl64.c:200 [inline]
RIP: 0010:fmul lib/crypto/curve25519-hacl64.c:436 [inline]
RIP: 0010:addanddouble_fmonty lib/crypto/curve25519-hacl64.c:505 [inline]
RIP: 0010:ladder_smallloop_cmult_small_loop_step lib/crypto/curve25519-hacl64.c:552 [inline]
RIP: 0010:ladder_smallloop_cmult_small_loop_double_step lib/crypto/curve25519-hacl64.c:564 [inline]
RIP: 0010:ladder_smallloop_cmult_small_loop lib/crypto/curve25519-hacl64.c:572 [inline]
RIP: 0010:ladder_bigloop_cmult_big_loop lib/crypto/curve25519-hacl64.c:585 [inline]
RIP: 0010:ladder_cmult.constprop.0+0x2c17/0x4c20 lib/crypto/curve25519-hacl64.c:599
Code: 49 89 c4 49 89 d5 48 8b 84 24 50 01 00 00 4d 01 d4 4d 11 dd 48 f7 a4 24 60 01 00 00 49 01 c4 48 8b 84 24 a0 01 00 00 49 11 d5 <48> f7 e1 49 01 c4 48 89 d8 49 11 d5 48 f7 a4 24 90 01 00 00 49 01
RSP: 0018:ffffc90000657030 EFLAGS: 00000206
RAX: 003fc94cf257f44a RBX: 00c329a301386231 RCX: 00a6c8fef76e88cf
RDX: 000002d783bed838 RSI: 00080d35c0ce3b88 RDI: 000aeafdc3f325a5
RBP: ffffc90000657610 R08: bf9572639c98523c R09: 00008ad67d215ec3
R10: b61465eeae3a1348 R11: 000001fc19382c57 R12: fcbdaec721399421
R13: 0000075d645aadcc R14: 0007ffffffffffff R15: 000a458f50e8052b
 curve25519_generic+0x2a4/0x5550 lib/crypto/curve25519-hacl64.c:781
 curve25519_base_arch+0x42/0x50 arch/x86/crypto/curve25519-x86_64.c:1400
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