rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 3079 jiffies s: 1521 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: 4383 Comm: syz.1.2 Not tainted 6.1.127-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:215 Code: 00 0f 0b 0f 1f 00 53 48 89 fb e8 17 00 00 00 48 8b 3d c8 8c 10 0d 48 89 de 5b e9 17 bc 56 00 cc cc cc cc cc cc cc 48 8b 04 24 <65> 48 8b 0d 94 d2 77 7e 65 8b 15 95 d2 77 7e 81 e2 00 01 ff 00 74 RSP: 0018:ffffc90000006e78 EFLAGS: 00000046 RAX: ffffffff8101215b RBX: 0000000000000007 RCX: ffff888027de8000 RDX: ffff888027de8000 RSI: 0000000000000007 RDI: 0000000000000007 RBP: ffffc90000006fd0 R08: ffffffff81011fbe R09: ffffc90000006f50 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffffffff81545345 R14: 1ffff92000000ddc R15: 0000000000000007 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff2d1301d8 CR3: 000000005d74a000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: perf_callchain_store include/linux/perf_event.h:1384 [inline] perf_callchain_kernel+0x55b/0x620 arch/x86/events/core.c:2807 get_perf_callchain+0x579/0x810 kernel/events/callchain.c:200 perf_callchain kernel/events/core.c:7488 [inline] perf_prepare_sample+0x390/0x1fb0 kernel/events/core.c:7521 __perf_event_output kernel/events/core.c:7706 [inline] perf_event_output_forward+0x1b7/0x330 kernel/events/core.c:7726 __perf_event_overflow+0x45e/0x640 kernel/events/core.c:9472 perf_swevent_hrtimer+0x38e/0x4f0 kernel/events/core.c:10880 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x5a7/0xe50 kernel/time/hrtimer.c:1753 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1815 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline] __sysvec_apic_timer_interrupt+0x158/0x5b0 arch/x86/kernel/apic/apic.c:1124 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline] sysvec_apic_timer_interrupt+0x4d/0xc0 arch/x86/kernel/apic/apic.c:1118 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:kcov_remote_start+0x27/0x7c0 kernel/kcov.c:932 Code: 44 00 00 55 41 57 41 56 41 55 41 54 53 48 83 ec 18 65 48 8b 1d 2a cb 77 7e 48 b8 00 00 00 00 ff ff ff 00 48 85 c7 74 11 0f 0b <48> 83 c4 18 5b 41 5c 41 5d 41 5e 41 5f 5d c3 48 89 fd 48 89 f8 48 RSP: 0018:ffffc90000007930 EFLAGS: 00000206 RAX: c27460b5d4325300 RBX: ffff888027de8000 RCX: ffffffff816b127a RDX: dffffc0000000000 RSI: ffffffff8b0c0340 RDI: ffffffff8b5e67c0 RBP: ffff8880b8e2b030 R08: dffffc0000000000 R09: fffffbfff224a04d R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff818aa48c R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000000 kcov_remote_start_common include/linux/kcov.h:50 [inline] ieee80211_rx_list+0x603/0x3380 net/mac80211/rx.c:5268 ieee80211_rx_napi+0x186/0x3b0 net/mac80211/rx.c:5309 ieee80211_rx include/net/mac80211.h:4831 [inline] ieee80211_handle_queued_frames+0x103/0x1b0 net/mac80211/main.c:317 tasklet_action_common+0x3cb/0x4a0 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571 __do_softirq kernel/softirq.c:605 [inline] invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666 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 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:lock_acquire+0x26f/0x5a0 kernel/locking/lockdep.c:5666 Code: 2b 00 74 08 4c 89 f7 e8 ff 8b 77 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 RSP: 0018:ffffc900042971a0 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff92000852e40 RCX: ffffffff816b5eb2 RDX: dffffc0000000000 RSI: ffffffff8b0c14c0 RDI: ffffffff8b5e67c0 RBP: ffffc900042972f8 R08: dffffc0000000000 R09: fffffbfff224a04d R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000852e3c R13: dffffc0000000000 R14: ffffc90004297200 R15: 0000000000000246 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] zap_pte_range mm/memory.c:1417 [inline] zap_pmd_range mm/memory.c:1574 [inline] zap_pud_range mm/memory.c:1603 [inline] zap_p4d_range mm/memory.c:1624 [inline] unmap_page_range+0xacc/0x2740 mm/memory.c:1645 unmap_vmas+0x48b/0x640 mm/memory.c:1730 exit_mmap+0x249/0x980 mm/mmap.c:3238 __mmput+0x115/0x3c0 kernel/fork.c:1200 exit_mm+0x226/0x300 kernel/exit.c:565 do_exit+0x9f1/0x26a0 kernel/exit.c:858 do_group_exit+0x202/0x2b0 kernel/exit.c:1021 get_signal+0x16f7/0x17d0 kernel/signal.c:2871 arch_do_signal_or_restart+0xb0/0x1a10 arch/x86/kernel/signal.c:871 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:174 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 __syscall_exit_to_user_mode_work kernel/entry/common.c:292 [inline] syscall_exit_to_user_mode+0x60/0x270 kernel/entry/common.c:303 do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:87 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f3d34f8b690 Code: Unable to access opcode bytes at 0x7f3d34f8b666. RSP: 002b:00007f3d35d3bf10 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: 0000000000000006 RBX: 0000000000000002 RCX: 00007f3d34f8b690 RDX: 0000000000000002 RSI: 00007f3d35d3bfa0 RDI: 00000000ffffff9c RBP: 00007f3d35d3bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f3d351a5fa0 R15: 00007ffcdb889938