rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2680 jiffies s: 61085 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 18959 Comm: syz.1.4443 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:211
Code: 00 00 00 00 00 90 53 48 89 fb e8 17 00 00 00 48 8b 3d 50 d7 9e 0c 48 89 de 5b e9 f7 72 50 00 00 00 cc cc 00 00 cc 48 8b 04 24 <65> 48 8b 0d a4 2d 80 7e 65 8b 15 a5 2d 80 7e 81 e2 00 01 ff 00 74
RSP: 0018:ffffc90000007738 EFLAGS: 00000046
RAX: ffffffff8139fe0b RBX: 00000000b8e3bbb0 RCX: ffff88802d519e00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff8880b8e3bbbb R09: 1ffff110171c7777
R10: dffffc0000000000 R11: ffffed10171c7778 R12: 0000000000000000
R13: dffffc0000000001 R14: 000000000000002e R15: 0000000000000000
FS:  00007f7fffefe6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc52d84f70 CR3: 0000000028417000 CR4: 00000000003506f0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 __virt_addr_valid+0xcb/0x540 arch/x86/mm/physaddr.c:61
 kasan_addr_to_slab+0x9/0xc0 mm/kasan/common.c:36
 __kasan_record_aux_stack+0xf/0xc0 mm/kasan/generic.c:471
 irq_work_queue_on+0x10f/0x260 kernel/irq_work.c:140
 rcu_read_unlock_special+0x3c9/0x510 kernel/rcu/tree_plugin.h:678
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 trace_call_bpf+0x5bb/0x6b0 kernel/trace/bpf_trace.c:137
 perf_trace_run_bpf_submit+0x79/0x1c0 kernel/events/core.c:10037
 perf_trace_preemptirq_template+0x268/0x320 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0xd3/0x140 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x7f/0x510 kernel/rcu/tree_plugin.h:685
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 12 6c 95 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc90000007c40 EFLAGS: 00000206
RAX: 9cdb18029afbfd00 RBX: 1ffff92000000f90 RCX: 9cdb18029afbfd00
RDX: dffffc0000000000 RSI: ffffffff8a8c18a0 RDI: ffffffff8adf6420
RBP: ffffc90000007d30 R08: ffffffff90b132df R09: 1ffffffff216265b
R10: dffffc0000000000 R11: fffffbfff216265c R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8e3bb00 R15: 0000000000000001
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 rebalance_domains+0x86f/0x9d0 kernel/sched/fair.c:11051
 handle_softirqs+0x291/0x910 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:_compound_head include/linux/page-flags.h:253 [inline]
RIP: 0010:PageAnon include/linux/page-flags.h:669 [inline]
RIP: 0010:copy_present_pte mm/memory.c:958 [inline]
RIP: 0010:copy_pte_range mm/memory.c:1091 [inline]
RIP: 0010:copy_pmd_range mm/memory.c:1177 [inline]
RIP: 0010:copy_pud_range mm/memory.c:1214 [inline]
RIP: 0010:copy_p4d_range mm/memory.c:1238 [inline]
RIP: 0010:copy_page_range+0x1308/0x3a60 mm/memory.c:1332
Code: 8e db ff ff 48 85 c0 48 89 44 24 18 0f 84 f0 01 00 00 49 89 c6 48 89 44 24 20 48 8d 58 08 49 89 dc 49 c1 ec 03 43 80 3c 3c 00 <74> 08 48 89 df e8 ce 82 14 00 48 89 9c 24 70 01 00 00 48 8b 1b 48
RSP: 0018:ffffc900035e7560 EFLAGS: 00000246
RAX: ffffea0001c50280 RBX: ffffea0001c50288 RCX: 0000000000080000
RDX: ffffc9000e4ab000 RSI: 000000000003e1c8 RDI: 000000000003e1c9
RBP: ffffc900035e7870 R08: ffffffff8e2116af R09: 1ffffffff1c422d5
R10: dffffc0000000000 R11: fffffbfff1c422d6 R12: 1ffffd400038a051
R13: 1ffff11007b86932 R14: ffffea0001c50280 R15: dffffc0000000000
 dup_mmap kernel/fork.c:703 [inline]
 dup_mm kernel/fork.c:1552 [inline]
 copy_mm+0xeb0/0x1680 kernel/fork.c:1601
 copy_process+0x1952/0x4070 kernel/fork.c:2358
 kernel_clone+0x24b/0x900 kernel/fork.c:2765
 __do_sys_clone kernel/fork.c:2906 [inline]
 __se_sys_clone kernel/fork.c:2890 [inline]
 __x64_sys_clone+0x1a7/0x220 kernel/fork.c:2890
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f7ffef9e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f7fffefdfd8 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f7fff225fa0 RCX: 00007f7ffef9e159
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000002c9a4080
RBP: 00007f7fff035024 R08: ffffffffff600000 R09: ffffffffff600000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00007f7fff226038 R14: 00007f7fff225fa0 R15: 00007fffe9e10d88
 </TASK>