rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-....: (2 ticks this GP) idle=1af/1/0x4000000000000000 softirq=46330/46330 fqs=2100
(detected by 1, t=10504 jiffies, g=58625, q=1551)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 17198 Comm: syz.2.2906 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:check_preemption_disabled+0x1/0x110 lib/smp_processor_id.c:13
Code: 00 48 c7 c7 00 ea 32 8a e8 2c 01 00 00 65 ff 0d 41 d0 42 76 5b c3 00 00 cc 48 c7 c7 e0 44 7a 8a 48 c7 c6 20 45 7a 8a eb 00 55 <41> 57 41 56 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24
RSP: 0018:ffffc900000072f0 EFLAGS: 00000002
RAX: ffffffff819bb2e6 RBX: ffff8880254297e0 RCX: ffff88807ae4bb80
RDX: 0000000000000100 RSI: ffffffff8a7a4520 RDI: ffffffff8a7a44e0
RBP: ffffc90000007450 R08: dffffc0000000000 R09: 1ffffffff203de18
R10: dffffc0000000000 R11: fffffbfff203de19 R12: 1ffff92000000e74
R13: ffffc900000074a0 R14: 0000000000000008 R15: 0000000000000001
FS: 00007f65deceb6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f713798e990 CR3: 0000000065f82000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:331 [inline]
rcu_is_watching+0x11/0xa0 kernel/rcu/tree.c:1123
rcu_read_lock include/linux/rcupdate.h:741 [inline]
__perf_output_begin kernel/events/ring_buffer.c:163 [inline]
perf_output_begin_forward+0xc0/0xa30 kernel/events/ring_buffer.c:271
__perf_event_output kernel/events/core.c:7814 [inline]
perf_event_output_forward+0x19b/0x2e0 kernel/events/core.c:7832
__perf_event_overflow+0x35f/0x550 kernel/events/core.c:9525
perf_swevent_overflow kernel/events/core.c:9601 [inline]
perf_swevent_event+0x4b8/0x540 kernel/events/core.c:9639
perf_tp_event+0x324/0xbe0 kernel/events/core.c:10057
perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10031
perf_trace_preemptirq_template+0x2aa/0x360 include/trace/events/preemptirq.h:14
trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40
trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44
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 f2 0f 9d 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: 0018:ffffc90000007b00 EFLAGS: 00000206
RAX: c4dc8262ff029200 RBX: 1ffff92000000f64 RCX: c4dc8262ff029200
RDX: dffffc0000000000 RSI: ffffffff8a2b2be0 RDI: ffffffff8a7a4540
RBP: ffffc90000007bd8 R08: ffffffff901ef16f R09: 1ffffffff203de2d
R10: dffffc0000000000 R11: fffffbfff203de2e R12: ffffffff8c323400
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]
ieee80211_iterate_active_interfaces_atomic+0x132/0x140 net/mac80211/util.c:831
mac80211_hwsim_beacon+0x9b/0x180 drivers/net/wireless/mac80211_hwsim.c:1865
__run_hrtimer kernel/time/hrtimer.c:1685 [inline]
__hrtimer_run_queues+0x4ea/0xb60 kernel/time/hrtimer.c:1749
hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
handle_softirqs+0x336/0x830 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:_compound_head include/linux/page-flags.h:196 [inline]
RIP: 0010:PageSwapBacked include/linux/page-flags.h:371 [inline]
RIP: 0010:mm_counter_file include/linux/mm.h:1977 [inline]
RIP: 0010:mm_counter include/linux/mm.h:1986 [inline]
RIP: 0010:copy_present_pte mm/memory.c:967 [inline]
RIP: 0010:copy_pte_range mm/memory.c:1081 [inline]
RIP: 0010:copy_pmd_range mm/memory.c:1167 [inline]
RIP: 0010:copy_pud_range mm/memory.c:1204 [inline]
RIP: 0010:copy_p4d_range mm/memory.c:1228 [inline]
RIP: 0010:copy_page_range+0x174e/0x32c0 mm/memory.c:1301
Code: 00 4d 8b 3f 4c 89 fe 48 83 e6 01 31 ff e8 7a c1 cb ff 49 83 e7 01 0f 85 03 01 00 00 48 b8 00 00 00 00 00 fc ff df 80 3c 03 00 <74> 08 4c 89 f7 e8 48 eb 10 00 4d 8b 3e 44 89 fe 83 e6 01 31 ff e8
RSP: 0018:ffffc900046b76c0 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 1ffffd400032f691 RCX: ffff88807ae4bb80
RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900046b7970 R08: ffffea000197b4b3 R09: 1ffffd400032f696
R10: dffffc0000000000 R11: fffff9400032f697 R12: 0000000000000083
R13: ffffea000197b480 R14: ffffea000197b488 R15: 0000000000000000
dup_mmap kernel/fork.c:616 [inline]
dup_mm kernel/fork.c:1472 [inline]
copy_mm+0xc61/0x13d0 kernel/fork.c:1524
copy_process+0x17a7/0x3e70 kernel/fork.c:2292
kernel_clone+0x23f/0x990 kernel/fork.c:2682
__do_sys_clone kernel/fork.c:2799 [inline]
__se_sys_clone kernel/fork.c:2783 [inline]
__x64_sys_clone+0x19a/0x210 kernel/fork.c:2783
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f65e0a93159
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:00007f65deceafd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f65e0d1afa0 RCX: 00007f65e0a93159
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000009900000
RBP: 00007f65e0b2a024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f65e0d1b038 R14: 00007f65e0d1afa0 R15: 00007ffd3d50a798