rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-....: (1 GPs behind) idle=799/1/0x4000000000000002 softirq=51890/51895 fqs=2100 
	(detected by 1, t=10506 jiffies, g=56769, q=1153)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 25604 Comm: syz.1.10218 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:check_kcov_mode kernel/kcov.c:172 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x13/0x60 kernel/kcov.c:206
Code: 48 8b 3d 20 bb 10 0c 48 89 de 5b e9 37 42 44 00 00 00 cc cc 00 00 cc 48 8b 04 24 65 48 8b 0d 74 4d 89 7e 65 8b 15 75 4d 89 7e <81> e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 34 16 00 00
RSP: 0000:ffffc90000007fb8 EFLAGS: 00000002
RAX: ffffffff81850c59 RBX: 0000000000000000 RCX: ffff88802388d940
RDX: 0000000000010001 RSI: ffffffff8a79f720 RDI: ffffffff8a79f6e0
RBP: 0000000000000000 R08: ffffffff8d89db2f R09: 1ffffffff1b13b65
R10: dffffc0000000000 R11: fffffbfff1b13b66 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000
FS:  0000555587697500(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fef88488000 CR3: 0000000059864000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 irq_work_run+0x9/0xe0 kernel/irq_work.c:185
 __sysvec_irq_work+0x98/0x240 arch/x86/kernel/irq_work.c:22
 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline]
 sysvec_irq_work+0x98/0xc0 arch/x86/kernel/irq_work.c:17
 </IRQ>
 <TASK>
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713
RIP: 0010:rcu_read_unlock_special+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 e2 f0 9c 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0000:ffffc90002f9fa00 EFLAGS: 00000206
RAX: a3bf2e070733a500 RBX: 1ffff920005f3f44 RCX: a3bf2e070733a500
RDX: dffffc0000000000 RSI: ffffffff8a2b2780 RDI: ffffffff8a79f740
RBP: ffffc90002f9fad0 R08: ffffffff901d20c7 R09: 1ffffffff203a418
R10: dffffc0000000000 R11: fffffbfff203a419 R12: ffffffff8c322f00
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422
 rcu_read_unlock include/linux/rcupdate.h:772 [inline]
 __unlock_page_memcg+0xea/0x100 mm/memcontrol.c:2093
 wp_page_copy+0xef5/0x2050 mm/memory.c:3148
 handle_pte_fault mm/memory.c:4668 [inline]
 __handle_mm_fault mm/memory.c:4785 [inline]
 handle_mm_fault+0x1f06/0x4410 mm/memory.c:4883
 do_user_addr_fault+0x489/0xc80 arch/x86/mm/fault.c:1355
 handle_page_fault arch/x86/mm/fault.c:1443 [inline]
 exc_page_fault+0x60/0x100 arch/x86/mm/fault.c:1496
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606
RIP: 0033:0x7fef880da7c3
Code: 53 48 83 ec 38 80 3d 5b d8 3a 00 00 89 7c 24 18 48 89 74 24 28 0f 85 cd 09 00 00 80 3d 2a 0f ee 00 00 49 89 f1 41 89 d2 89 cb <c6> 05 36 d8 3a 00 01 41 89 d7 0f 85 45 04 00 00 80 3d f6 0e ee 00
RSP: 002b:00007fff3c7b7cc0 EFLAGS: 00010246
RAX: 00007fef8848bfa0 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000003 RSI: 00007fef8848c038 RDI: 0000000000000000
RBP: 00007fef8848bfb0 R08: 0000000000000000 R09: 00007fef8848c038
R10: 0000000000000003 R11: 0000000000000000 R12: 00007fef8848bfa0
R13: 0000200000000000 R14: 00007fff3c7b7d38 R15: 00007fef8848bfa0
 </TASK>