rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2636 jiffies s: 1569 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 UID: 0 PID: 5344 Comm: kworker/0:7 Not tainted 6.11.0-rc7-syzkaller-00135-gb7718454f937 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events nsim_dev_trap_report_work
RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:26 [inline]
RIP: 0010:check_kcov_mode kernel/kcov.c:182 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0xc/0x70 kernel/kcov.c:216
Code: c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 65 48 8b 15 b4 0a 78 7e <65> 8b 05 b5 0a 78 7e a9 00 01 ff 00 48 8b 34 24 74 1d f6 c4 01 74
RSP: 0018:ffffc90000006978 EFLAGS: 00000046
RAX: 0000000000010305 RBX: ffffc90000006a00 RCX: ffffffff813cf5c1
RDX: ffff88803115bc00 RSI: 0000000000000009 RDI: 0000000000000001
RBP: 0000000000000002 R08: 0000000000000001 R09: 0000000000000009
R10: 0000000000000005 R11: 0000000000000000 R12: ffffffff914ab03c
R13: 0000000000000005 R14: ffffffff914ab040 R15: ffffc90000006a35
FS:  0000000000000000(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3250dff8 CR3: 000000000db7c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 unwind_next_frame+0x6ee/0x23a0 arch/x86/kernel/unwind_orc.c:517
 arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 kasan_save_free_info+0x3b/0x60 mm/kasan/generic.c:579
 poison_slab_object+0xf7/0x160 mm/kasan/common.c:240
 __kasan_slab_free+0x32/0x50 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2256 [inline]
 slab_free mm/slub.c:4477 [inline]
 kfree+0x12a/0x3b0 mm/slub.c:4598
 dummy_timer+0x1750/0x38d0 drivers/usb/gadget/udc/dummy_hcd.c:1981
 __run_hrtimer kernel/time/hrtimer.c:1689 [inline]
 __hrtimer_run_queues+0x20c/0xcc0 kernel/time/hrtimer.c:1753
 hrtimer_interrupt+0x31b/0x800 kernel/time/hrtimer.c:1815
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1032 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x450 arch/x86/kernel/apic/apic.c:1049
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x43/0xb0 arch/x86/kernel/apic/apic.c:1043
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x31/0x80 kernel/locking/spinlock.c:194
Code: f5 53 48 8b 74 24 10 48 89 fb 48 83 c7 18 e8 a6 02 50 f6 48 89 df e8 be 7f 50 f6 f7 c5 00 02 00 00 75 23 9c 58 f6 c4 02 75 37 <bf> 01 00 00 00 e8 e5 f2 41 f6 65 8b 05 76 1d ea 74 85 c0 74 16 5b
RSP: 0018:ffffc900000072a8 EFLAGS: 00000246
RAX: 0000000000000006 RBX: ffffffff9a4ad970 RCX: 1ffffffff2d2e4e8
RDX: 0000000000000000 RSI: ffffffff8b4cd740 RDI: ffffffff8bb0fc00
RBP: 0000000000000202 R08: 0000000000000001 R09: fffffbfff2d248f8
R10: ffffffff969247c7 R11: ffffffff8b4e5fe0 R12: 0000000000000001
R13: ffff88807a438400 R14: 1ffff92000000e5c R15: ffffffff9a4ad968
 debug_object_activate+0x34d/0x540 lib/debugobjects.c:727
 debug_rcu_head_queue kernel/rcu/rcu.h:227 [inline]
 kvfree_call_rcu+0x30/0xbe0 kernel/rcu/tree.c:3806
 cfg80211_update_known_bss+0x39f/0x1150 net/wireless/scan.c:1891
 __cfg80211_bss_update+0x1aa/0x2560 net/wireless/scan.c:1937
 cfg80211_inform_single_bss_data+0x79b/0x1dc0 net/wireless/scan.c:2331
 cfg80211_inform_bss_data+0x205/0x39c0 net/wireless/scan.c:3159
 cfg80211_inform_bss_frame_data+0x271/0x7a0 net/wireless/scan.c:3254
 ieee80211_bss_info_update+0x311/0xab0 net/mac80211/scan.c:226
 ieee80211_scan_rx+0x474/0xac0 net/mac80211/scan.c:340
 __ieee80211_rx_handle_packet net/mac80211/rx.c:5225 [inline]
 ieee80211_rx_list+0x1be3/0x2e90 net/mac80211/rx.c:5462
 ieee80211_rx_napi+0xdd/0x400 net/mac80211/rx.c:5485
 ieee80211_rx include/net/mac80211.h:5124 [inline]
 ieee80211_handle_queued_frames+0xd5/0x130 net/mac80211/main.c:439
 tasklet_action_common.constprop.0+0x24c/0x3e0 kernel/softirq.c:785
 handle_softirqs+0x216/0x8f0 kernel/softirq.c:554
 __do_softirq kernel/softirq.c:588 [inline]
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu kernel/softirq.c:637 [inline]
 irq_exit_rcu+0xbb/0x120 kernel/softirq.c:649
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:unwind_get_return_address+0xa5/0xe0 arch/x86/kernel/unwind_orc.c:369
Code: 00 31 ff 89 c5 89 c6 e8 c9 e9 4e 00 85 ed 74 b5 e8 80 e7 4e 00 4c 89 e2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 <75> 2c 48 8b 5b 48 e8 60 e7 4e 00 48 89 d8 5b 5d 41 5c c3 cc cc cc
RSP: 0018:ffffc9000439f700 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffc9000439f728 RCX: ffffffff813ce8b7
RDX: 1ffff92000873eee RSI: ffffffff813ce8c0 RDI: 0000000000000005
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffc9000439f770
R13: ffffffff81776c00 R14: ffffc9000439f7e8 R15: ffff88803115bc00
 arch_stack_walk+0xc1/0x170 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47
 kasan_save_track+0x14/0x30 mm/kasan/common.c:68
 poison_kmalloc_redzone mm/kasan/common.c:370 [inline]
 __kasan_kmalloc+0xaa/0xb0 mm/kasan/common.c:387
 kasan_kmalloc include/linux/kasan.h:211 [inline]
 __do_kmalloc_node mm/slub.c:4162 [inline]
 __kmalloc_node_track_caller_noprof+0x20f/0x430 mm/slub.c:4181
 kmalloc_reserve+0xef/0x2c0 net/core/skbuff.c:605
 __alloc_skb+0x164/0x380 net/core/skbuff.c:674
 alloc_skb include/linux/skbuff.h:1320 [inline]
 nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:748 [inline]
 nsim_dev_trap_report drivers/net/netdevsim/dev.c:805 [inline]
 nsim_dev_trap_report_work+0x2a4/0xc80 drivers/net/netdevsim/dev.c:850
 process_one_work+0x9c5/0x1b40 kernel/workqueue.c:3231
 process_scheduled_works kernel/workqueue.c:3312 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3393
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>