rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (2 ticks this GP) idle=3e3c/1/0x4000000000000000 softirq=28485/28485 fqs=0
rcu: 	(detected by 0, t=10502 jiffies, g=26265, q=276 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 8701 Comm: syz.0.884 Not tainted 6.12.0-rc6-syzkaller-01561-ga71c69f51d11 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/30/2024
RIP: 0010:_raw_spin_unlock_irqrestore+0xc/0x140 kernel/locking/spinlock.c:193
Code: cc cc 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 55 48 89 e5 41 57 41 56 <41> 55 41 54 53 48 83 e4 e0 48 83 ec 60 49 89 f7 48 89 fb 65 48 8b
RSP: 0018:ffffc90000a18c20 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff8880302a5770 RCX: 0000000000000002
RDX: ffff8880302a5780 RSI: 0000000000000046 RDI: ffffffff9a684930
RBP: ffffc90000a18c30 R08: 0000000000000003 R09: fffff52000143164
R10: dffffc0000000000 R11: fffff52000143164 R12: 1ffff11006054af0
R13: ffff8880302a5784 R14: dffffc0000000000 R15: 1ffff9200014318c
FS:  00007f4d1079b6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000006bc46000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 debug_object_deactivate+0x2d5/0x390 lib/debugobjects.c:778
 debug_hrtimer_deactivate kernel/time/hrtimer.c:428 [inline]
 debug_deactivate+0x1b/0x220 kernel/time/hrtimer.c:484
 __run_hrtimer kernel/time/hrtimer.c:1659 [inline]
 __hrtimer_run_queues+0x305/0xd50 kernel/time/hrtimer.c:1755
 hrtimer_interrupt+0x396/0x990 kernel/time/hrtimer.c:1817
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:rmd160_transform+0xb6d/0x1bc0 crypto/rmd160.c:169
Code: 1b 8f 01 d1 c1 c5 0a 89 e8 f7 d0 09 f8 31 c8 44 01 ca 44 8d 94 10 e6 8b a2 50 41 c1 c2 08 41 01 f2 c1 c7 0a 89 f8 f7 d0 09 c8 <44> 31 d0 03 74 24 34 8d b4 30 e6 8b a2 50 c1 c6 0b 01 ee c1 c1 0a
RSP: 0018:ffffc90003a474e8 EFLAGS: 00000282
RAX: 00000000e5bf5cfd RBX: 0000000085b45c6a RCX: 00000000e5b51cc8
RDX: 000000001c38b52d RSI: 0000000083058459 RDI: 00000000ff45a70a
RBP: 00000000f8d46502 R08: 00000000a612a9f4 R09: 0000000000000000
R10: 00000000690dcce7 R11: 000000000980466b R12: 00000000863861c5
R13: 0000000000000000 R14: 00000000d4f53976 R15: 00000000534be57c
 rmd160_update+0x122/0x170 crypto/rmd160.c:297
 shash_ahash_update+0x2e0/0x4a0 crypto/ahash.c:55
 hash_sendmsg+0x964/0x1110 crypto/algif_hash.c:149
 sock_sendmsg_nosec net/socket.c:729 [inline]
 __sock_sendmsg+0x221/0x270 net/socket.c:744
 ____sys_sendmsg+0x52a/0x7e0 net/socket.c:2609
 ___sys_sendmsg net/socket.c:2663 [inline]
 __sys_sendmmsg+0x3ab/0x730 net/socket.c:2749
 __do_sys_sendmmsg net/socket.c:2778 [inline]
 __se_sys_sendmmsg net/socket.c:2775 [inline]
 __x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2775
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f4d0f97e719
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f4d1079b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000133
RAX: ffffffffffffffda RBX: 00007f4d0fb35f80 RCX: 00007f4d0f97e719
RDX: 0000000000000001 RSI: 0000000020003e80 RDI: 0000000000000009
RBP: 00007f4d0f9f175e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f4d0fb35f80 R15: 00007ffeb87ee0a8
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g26265 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=9214
rcu: rcu_preempt kthread starved for 10502 jiffies! g26265 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->cpu=1
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:I stack:24208 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5328 [inline]
 __schedule+0x184f/0x4c30 kernel/sched/core.c:6690
 __schedule_loop kernel/sched/core.c:6767 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6782
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2615
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>