rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2684 jiffies s: 6201 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 8212 Comm: syz-executor.3 Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:check_kcov_mode kernel/kcov.c:173 [inline]
RIP: 0010:write_comp_data+0x1f/0x90 kernel/kcov.c:236
Code: 90 90 90 90 90 90 90 90 90 90 90 49 89 d2 49 89 f8 49 89 f1 65 48 8b 15 df e1 76 7e 65 8b 05 e0 e1 76 7e a9 00 01 ff 00 74 0f <f6> c4 01 74 59 8b 82 14 16 00 00 85 c0 74 4f 8b 82 f0 15 00 00 83
RSP: 0018:ffffc90000a086f8 EFLAGS: 00000206
RAX: 0000000000000102 RBX: 0000000000000008 RCX: ffffffff813c9d91
RDX: ffff88802505bc00 RSI: 0000000000000009 RDI: 0000000000000001
RBP: ffffffff8b09dd00 R08: 0000000000000001 R09: 0000000000000009
R10: 0000000000000005 R11: 0000000000000004 R12: 0000000000000005
R13: 0000000000000001 R14: 0000000000000008 R15: ffffc90000a087e5
FS:  0000555580b8e480(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2d823000 CR3: 0000000027618000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __sanitizer_cov_trace_switch+0x54/0x90 kernel/kcov.c:341
 unwind_next_frame+0x6c1/0x23a0 arch/x86/kernel/unwind_orc.c:515
 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 mm/kasan/common.c:240 [inline]
 __kasan_slab_free+0x11d/0x1a0 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2106 [inline]
 slab_free mm/slub.c:4280 [inline]
 kmem_cache_free+0x12e/0x360 mm/slub.c:4344
 skb_kfree_head net/core/skbuff.c:1094 [inline]
 skb_kfree_head net/core/skbuff.c:1091 [inline]
 skb_free_head+0x19a/0x1e0 net/core/skbuff.c:1108
 skb_release_data+0x76c/0x990 net/core/skbuff.c:1136
 skb_release_all net/core/skbuff.c:1202 [inline]
 __kfree_skb net/core/skbuff.c:1216 [inline]
 consume_skb net/core/skbuff.c:1432 [inline]
 consume_skb+0xd2/0x170 net/core/skbuff.c:1426
 mac80211_hwsim_tx_frame+0x1f3/0x2a0 drivers/net/wireless/virtual/mac80211_hwsim.c:2201
 __mac80211_hwsim_beacon_tx drivers/net/wireless/virtual/mac80211_hwsim.c:2217 [inline]
 mac80211_hwsim_beacon_tx+0x503/0x880 drivers/net/wireless/virtual/mac80211_hwsim.c:2300
 __iterate_interfaces+0x2d2/0x580 net/mac80211/util.c:772
 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 net/mac80211/util.c:808
 mac80211_hwsim_beacon+0x105/0x200 drivers/net/wireless/virtual/mac80211_hwsim.c:2326
 __run_hrtimer kernel/time/hrtimer.c:1692 [inline]
 __hrtimer_run_queues+0x20c/0xc20 kernel/time/hrtimer.c:1756
 hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1773
 __do_softirq+0x218/0x8de kernel/softirq.c:554
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu kernel/softirq.c:633 [inline]
 irq_exit_rcu+0xb9/0x120 kernel/softirq.c:645
 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:console_flush_all+0xa19/0xd70 kernel/printk/printk.c:2979
Code: e8 9c dd 25 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 0a c9 1e 00 48 85 db 0f 85 8b 01 00 00 e8 ec cd 1e 00 fb 48 8b 04 24 <4c> 89 fa 83 e2 07 0f b6 00 38 d0 7f 08 84 c0 0f 85 a9 02 00 00 41
RSP: 0018:ffffc9000408fb40 EFLAGS: 00000293
RAX: fffff52000811f8f RBX: 0000000000000000 RCX: ffffffff816e2ab6
RDX: ffff88802505bc00 RSI: ffffffff816e2ac4 RDI: 0000000000000007
RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000004 R12: 0000000000000200
R13: ffffffff8e3995f8 R14: ffffffff8e3995a0 R15: ffffc9000408fc78
 console_unlock+0xae/0x290 kernel/printk/printk.c:3042
 vprintk_emit kernel/printk/printk.c:2342 [inline]
 vprintk_emit+0x11a/0x5a0 kernel/printk/printk.c:2297
 vprintk+0x7f/0xa0 kernel/printk/printk_safe.c:45
 _printk+0xc8/0x100 kernel/printk/printk.c:2367
 base_sock_release+0x4c/0x1c0 drivers/isdn/mISDN/socket.c:622
 __sock_release+0xb0/0x270 net/socket.c:659
 sock_close+0x1c/0x30 net/socket.c:1421
 __fput+0x270/0xb80 fs/file_table.c:422
 __fput_sync+0x47/0x50 fs/file_table.c:507
 __do_sys_close fs/open.c:1556 [inline]
 __se_sys_close fs/open.c:1541 [inline]
 __x64_sys_close+0x86/0x100 fs/open.c:1541
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xd2/0x260 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x6d/0x75
RIP: 0033:0x7eff7fe7ccda
Code: 48 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c 24 0c e8 03 7f 02 00 8b 7c 24 0c 89 c2 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 36 89 d7 89 44 24 0c e8 63 7f 02 00 8b 44 24
RSP: 002b:00007ffe635cffc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 00007eff7fe7ccda
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004
RBP: 0000000000000032 R08: 0000001b2dc20000 R09: 0000000000000072
R10: 000000008ad249d8 R11: 0000000000000293 R12: 00007eff7fa005d0
R13: ffffffffffffffff R14: 00007eff7fa00000 R15: 00000000000467cb
 </TASK>