rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	0-....: (10499 ticks this GP) idle=dfe4/1/0x4000000000000000 softirq=23505/43132 fqs=5248
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1014096       9521            0
rcu: 	cputime:    24830      27517          200   ==> 52500(ms)
rcu: 	(t=10501 jiffies g=14873 q=3125 ncpus=2)
CPU: 0 UID: 0 PID: 7664 Comm: syz.0.477 Not tainted 6.16.0-syzkaller-06600-g1dbf1d590d10-dirty #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:note_gp_changes+0x25f/0x300
Code: 20 00 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 f6 44 24 41 02 75 4f 41 f7 c6 00 02 00 00 74 01 fb 48 c7 44 24 20 0e 36 e0 45 <4a> c7 04 2b 00 00 00 00 66 42 c7 44 2b 09 00 00 42 c6 44 2b 0b 00
RSP: 0018:ffffc90000007b00 EFLAGS: 00000206
RAX: 806c48214c249400 RBX: 1ffff92000000f64 RCX: 806c48214c249400
RDX: 0000000000000002 RSI: ffffffff8d9792dd RDI: ffffffff8be30a00
RBP: ffffc90000007bd0 R08: ffffffff8fa07bf7 R09: 1ffffffff1f40f7e
R10: dffffc0000000000 R11: fffffbfff1f40f7f R12: ffff88804b03af54
R13: dffffc0000000000 R14: 0000000000000a02 R15: ffff88804b03af40
FS:  00007f2ba59b36c0(0000) GS:ffff8880b8680000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000bd9000 CR3: 00000001140c8000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_core+0x29d/0x1710
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_irq_work+0xa3/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x1a/0x20
RIP: 0010:preempt_schedule_irq+0xb0/0x150
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 eb 1f 1f f6 e8 c6 48 56 f6 fb bf 01 00 00 00 <e8> eb aa ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc900208f7440 EFLAGS: 00000286
RAX: 806c48214c249400 RBX: 0000000000000000 RCX: 806c48214c249400
RDX: 0000000000000006 RSI: ffffffff8d9792dd RDI: 0000000000000001
RBP: ffffc900208f74f0 R08: ffffffff8fa07bf7 R09: 1ffffffff1f40f7e
R10: dffffc0000000000 R11: fffffbfff1f40f7f R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff9200411ee88
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:do_user_addr_fault+0x1ae/0x1390
Code: 1b 48 89 de 48 81 e6 00 02 00 00 31 ff e8 2a e3 4b 00 48 81 e3 00 02 00 00 0f 84 79 0e 00 00 e8 e8 6a 53 00 fb 4c 89 7c 24 38 <0f> 1f 44 00 00 e8 28 de 4b 00 44 89 f6 83 e6 40 31 ff 48 89 74 24
RSP: 0018:ffffc900208f75b8 EFLAGS: 00000286
RAX: 806c48214c249400 RBX: 0000000000000200 RCX: 806c48214c249400
RDX: 0000000000000006 RSI: ffffffff8d9792dd RDI: ffffffff8be30a00
RBP: dffffc0000000000 R08: ffffffff8fa07bf7 R09: 1ffffffff1f40f7e
R10: dffffc0000000000 R11: fffffbfff1f40f7f R12: ffffc900208f76a8
R13: 0000200000bd9000 R14: 0000000000000000 R15: ffff8881093b0000
 exc_page_fault+0x76/0xf0
 asm_exc_page_fault+0x26/0x30
RIP: 0010:rep_movs_alternative+0x75/0x90
Code: 05 c3 cc cc cc cc 48 8b 06 48 89 07 48 8d 47 08 48 83 e0 f8 48 29 f8 48 01 c7 48 01 c6 48 29 c1 48 89 c8 48 c1 e9 03 83 e0 07 <f3> 48 a5 89 c1 85 c9 75 91 e9 7d 0a 04 00 48 8d 0c c8 eb 86 cc cc
RSP: 0018:ffffc900208f7758 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88802f528000 RCX: 0000000000000e28
RDX: 0000000000000001 RSI: 0000200000bd9000 RDI: ffff88802f528ec0
RBP: ffffc900208f78b0 R08: ffff88802f52ffff R09: 1ffff11005ea5fff
R10: dffffc0000000000 R11: ffffed1005ea6000 R12: 1ffff9200411ef77
R13: 0000200000bd8140 R14: ffffc900208f7bc8 R15: 0000000000008000
 _copy_from_iter+0x24c/0x16f0
 kcm_sendmsg+0xf00/0x2ab0
 __sock_sendmsg+0x21c/0x270
 sock_write_iter+0x258/0x330
 vfs_write+0x54b/0xa90
 ksys_write+0x145/0x250
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f2ba4b8ebe9
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:00007f2ba59b3038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f2ba4db5fa0 RCX: 00007f2ba4b8ebe9
RDX: 00000000fffffdef RSI: 0000200000000140 RDI: 000000000000000a
RBP: 00007f2ba4c11e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2ba4db6038 R14: 00007f2ba4db5fa0 R15: 00007ffca60f6948
 </TASK>
