rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 	1-....: (10501 ticks this GP) idle=673c/1/0x4000000000000000 softirq=168280/168284 fqs=5247
rcu: 	         hardirqs   softirqs   csw/system
rcu: 	 number:  1029765          1            0
rcu: 	cputime:    33530      18969           87   ==> 52510(ms)
rcu: 	(t=10502 jiffies g=178633 q=1137 ncpus=2)
CPU: 1 UID: 0 PID: 6515 Comm: syz.6.9677 Not tainted 6.16.0-syzkaller-11113-gf3af62b6cee8-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:__dma_sync_single_for_cpu+0x21d/0x4c0
Code: 03 00 00 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 4c 8b 64 24 10 74 08 4c 89 f7 e8 b6 b9 79 00 4d 8b 36 <4d> 85 f6 74 39 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df
RSP: 0018:ffffc900001e0828 EFLAGS: 00000246
RAX: 1ffff1102096bc91 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000002 R08: ffff888126479323 R09: 1ffff11024c8f264
R10: dffffc0000000000 R11: ffffed1024c8f265 R12: 0000000000000096
R13: 000000007e765800 R14: ffffffff99aee4a0 R15: 000000007e765800
FS:  00007fb12dc586c0(0000) GS:ffff8881a3c2a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000016f000 CR3: 00000001177dc000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 e1000_clean_rx_irq+0x4f8/0x1170
 e1000_clean+0xca4/0x2b00
 __napi_poll+0xc7/0x360
 net_rx_action+0x707/0xe30
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__schedule+0x1a2/0x4cc0
Code: 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 f6 ba aa f6 48 8b 1b 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 48 89 df e8 d4 ba aa f6 48 81 3b 9d 6e ac 57 0f 85 b7 18 00
RSP: 0018:ffffc90002def400 EFLAGS: 00000246
RAX: 1ffff920005bd000 RBX: ffffc90002de8000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: ffffffff8be2fce0 RDI: ffffffff8be2fca0
RBP: ffffc90002def610 R08: ffffffff8fa32437 R09: 1ffffffff1f46486
R10: dffffc0000000000 R11: fffffbfff1f46487 R12: ffff8881a3c2a000
R13: 0000000000000001 R14: ffff888022dd1cc0 R15: 1ffff11026cc7551
 preempt_schedule_irq+0xb5/0x150
 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 4a de 4b 00 48 81 e3 00 02 00 00 0f 84 79 0e 00 00 e8 18 76 53 00 fb 4c 89 7c 24 38 <0f> 1f 44 00 00 e8 48 d9 4b 00 44 89 f6 83 e6 40 31 ff 48 89 74 24
RSP: 0018:ffffc90002def798 EFLAGS: 00000282
RAX: 4d4eb961a5f13000 RBX: 0000000000000200 RCX: 4d4eb961a5f13000
RDX: 0000000000000006 RSI: ffffffff8d9b1620 RDI: ffffffff8be2fd00
RBP: dffffc0000000000 R08: ffffffff8fa32437 R09: 1ffffffff1f46486
R10: dffffc0000000000 R11: fffffbfff1f46487 R12: ffffc90002def888
R13: 000020000016f000 R14: 0000000000000000 R15: ffff888022dd1cc0
 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 09 04 00 48 8d 0c c8 eb 86 cc cc
RSP: 0018:ffffc90002def938 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888113d58000 RCX: 0000000000000038
RDX: 0000000000000001 RSI: 000020000016f000 RDI: ffff888113d58e40
RBP: ffffc90002defa88 R08: ffff888113d58fff R09: 1ffff110227ab1ff
R10: dffffc0000000000 R11: ffffed10227ab200 R12: 1ffff920005bdfaf
R13: 000020000016e1c0 R14: ffffc90002defd88 R15: 0000000000001000
 _copy_from_iter+0x24c/0x16f0
 copy_page_from_iter+0xdd/0x170
 anon_pipe_write+0x99a/0x1360
 vfs_write+0x54b/0xa90
 ksys_write+0x145/0x250
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb12cd8eb69
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:00007fb12dc58038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fb12cfb5fa0 RCX: 00007fb12cd8eb69
RDX: 00000000fffffdef RSI: 00002000000001c0 RDI: 0000000000000000
RBP: 00007fb12ce11df1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fb12cfb5fa0 R15: 00007ffe411d9848
 </TASK>
