rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (1 GPs behind) idle=47b/1/0x4000000000000000 softirq=13132/13134 fqs=0
(detected by 0, t=10506 jiffies, g=16045, q=73)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 3567 Comm: kworker/u4:4 Not tainted 5.15.160-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: netns cleanup_net
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:35 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:132 [inline]
RIP: 0010:lock_release+0x601/0x9a0 kernel/locking/lockdep.c:5646
Code: 4c 89 f3 48 c1 eb 03 42 80 3c 3b 00 74 08 4c 89 f7 e8 a3 53 67 00 48 c7 84 24 90 00 00 00 00 00 00 00 9c 8f 84 24 90 00 00 00 <42> 80 3c 3b 00 74 08 4c 89 f7 e8 00 53 67 00 f6 84 24 91 00 00 00
RSP: 0018:ffffc90000dd0b80 EFLAGS: 00000046
RAX: 0000000000000001 RBX: 1ffff920001ba182 RCX: ffffc90000dd0c03
RDX: 0000000000000005 RSI: ffffffff8a8b3c20 RDI: ffffffff8ad8f6c0
RBP: ffffc90000dd0cb0 R08: dffffc0000000000 R09: fffffbfff1bc8cce
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920001ba17c
R13: 0000000000000046 R14: ffffc90000dd0c10 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb4b794898c CR3: 00000000616e2000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_unlock include/linux/rcupdate.h:772 [inline]
advance_sched+0x7d4/0x940 net/sched/sch_taprio.c:771
__run_hrtimer kernel/time/hrtimer.c:1686 [inline]
__hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1750
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:seqcount_lockdep_reader_access+0x1dc/0x220 include/linux/seqlock.h:106
Code: 00 4d 85 ed 75 16 e8 43 b1 10 00 eb 15 e8 3c b1 10 00 e8 27 42 ae 08 4d 85 ed 74 ea e8 2d b1 10 00 fb 48 c7 04 24 0e 36 e0 45 <4b> c7 04 3c 00 00 00 00 66 43 c7 44 3c 09 00 00 43 c6 44 3c 0b 00
RSP: 0018:ffffc90003f97460 EFLAGS: 00000293
RAX: ffffffff816fab93 RBX: 0000000000000000 RCX: ffff88801ae75940
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003f97508 R08: ffffffff816fab69 R09: fffffbfff1f7f01d
R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000
R13: 0000000000000200 R14: 0000000000000046 R15: 1ffff920007f2e8c
ktime_get_coarse_real_ts64+0x36/0x120 kernel/time/timekeeping.c:2244
current_time+0x87/0x2f0 fs/inode.c:2327
simple_recursive_removal+0x27c/0x850 fs/libfs.c:282
debugfs_remove+0x45/0x60 fs/debugfs/inode.c:745
ieee80211_debugfs_remove_netdev+0x4d/0xa0 net/mac80211/debugfs_netdev.c:851
ieee80211_teardown_sdata net/mac80211/iface.c:687 [inline]
ieee80211_uninit+0x24/0xa0 net/mac80211/iface.c:697
unregister_netdevice_many+0x12bb/0x18f0 net/core/dev.c:11110
ieee80211_remove_interfaces+0x4f0/0x820 net/mac80211/iface.c:2142
ieee80211_unregister_hw+0x55/0x220 net/mac80211/main.c:1390
mac80211_hwsim_del_radio+0x2bb/0x4a0 drivers/net/wireless/mac80211_hwsim.c:3473
hwsim_exit_net+0x5b8/0x660 drivers/net/wireless/mac80211_hwsim.c:4243
ops_exit_list net/core/net_namespace.c:172 [inline]
cleanup_net+0x6ce/0xb60 net/core/net_namespace.c:599
process_one_work+0x8a1/0x10c0 kernel/workqueue.c:2310
worker_thread+0xaca/0x1280 kernel/workqueue.c:2457
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
rcu: rcu_preempt kthread starved for 10506 jiffies! g16045 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=0
rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt state:R running task stack:26712 pid: 15 ppid: 2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5030 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6376
schedule+0x11b/0x1f0 kernel/sched/core.c:6459
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1914
rcu_gp_fqs_loop+0x2bf/0x1080 kernel/rcu/tree.c:1972
rcu_gp_kthread+0xa4/0x360 kernel/rcu/tree.c:2145
kthread+0x3f6/0x4f0 kernel/kthread.c:334
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:300
rcu: Stack dump where RCU GP kthread last ran:
NMI backtrace for cpu 0
CPU: 0 PID: 5457 Comm: syz-executor.3 Not tainted 5.15.160-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_single_cpu_backtrace include/linux/nmi.h:166 [inline]
rcu_check_gp_kthread_starvation+0x1d2/0x240 kernel/rcu/tree_stall.h:487
print_other_cpu_stall+0x137a/0x14d0 kernel/rcu/tree_stall.h:592
check_cpu_stall kernel/rcu/tree_stall.h:745 [inline]
rcu_pending kernel/rcu/tree.c:3932 [inline]
rcu_sched_clock_irq+0xa38/0x1150 kernel/rcu/tree.c:2619
update_process_times+0x196/0x200 kernel/time/timer.c:1818
tick_sched_handle kernel/time/tick-sched.c:254 [inline]
tick_sched_timer+0x386/0x550 kernel/time/tick-sched.c:1473
__run_hrtimer kernel/time/hrtimer.c:1686 [inline]
__hrtimer_run_queues+0x55b/0xcf0 kernel/time/hrtimer.c:1750
hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1812
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1085 [inline]
__sysvec_apic_timer_interrupt+0x139/0x470 arch/x86/kernel/apic/apic.c:1102
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1096
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0xa93/0xd90 kernel/smp.c:969
Code: 04 03 84 c0 0f 85 84 00 00 00 45 8b 7d 00 44 89 fe 83 e6 01 31 ff e8 4c cf 0b 00 41 83 e7 01 75 07 e8 e1 cb 0b 00 eb 41 f3 90 <48> b8 00 00 00 00 00 fc ff df 0f b6 04 03 84 c0 75 11 41 f7 45 00
RSP: 0018:ffffc90003377220 EFLAGS: 00000246
RAX: ffffffff81749104 RBX: 1ffff110173680b9 RCX: 0000000000040000
RDX: ffffc9000a251000 RSI: 000000000003ffff RDI: 0000000000040000
RBP: ffffc90003377360 R08: ffffffff817490d4 R09: fffffbfff1f7f01a
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001
R13: ffff8880b9b405c8 R14: ffff8880b9a3b3c0 R15: 0000000000000001
on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1135
__purge_vmap_area_lazy+0x294/0x1740 mm/vmalloc.c:1683
_vm_unmap_aliases+0x453/0x4e0 mm/vmalloc.c:2107
change_page_attr_set_clr+0x308/0x1050 arch/x86/mm/pat/set_memory.c:1740
change_page_attr_clear arch/x86/mm/pat/set_memory.c:1797 [inline]
set_memory_ro+0xa1/0xe0 arch/x86/mm/pat/set_memory.c:1943
bpf_jit_binary_lock_ro include/linux/filter.h:891 [inline]
bpf_int_jit_compile+0xbf57/0xc6e0 arch/x86/net/bpf_jit_comp.c:2372
bpf_prog_select_runtime+0x6e2/0x9b0 kernel/bpf/core.c:1930
bpf_prog_load+0x131c/0x1b60 kernel/bpf/syscall.c:2357
__sys_bpf+0x343/0x670 kernel/bpf/syscall.c:4651
__do_sys_bpf kernel/bpf/syscall.c:4755 [inline]
__se_sys_bpf kernel/bpf/syscall.c:4753 [inline]
__x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:4753
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f9e01fbeea9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f9e00b380c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f9e020f5f80 RCX: 00007f9e01fbeea9
RDX: 000000000000002e RSI: 0000000020000080 RDI: 0000000000000005
RBP: 00007f9e0202dff4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f9e020f5f80 R15: 00007ffd1480b9e8