rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P19893/1:b..l P19897
	(detected by 0, t=10502 jiffies, g=209249, q=168)
task:kworker/u4:0    state:R  running task     stack:26144 pid:16892 ppid:     2 flags:0x00004000
Workqueue: bat_events batadv_nc_worker
Call Trace:
 context_switch kernel/sched/core.c:4339 [inline]
 __schedule+0x916/0x23e0 kernel/sched/core.c:5147
 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:5535
 irqentry_exit+0x31/0x80 kernel/entry/common.c:427
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:lock_acquire+0x1ef/0x740 kernel/locking/lockdep.c:5480
Code: 72 a7 7e 83 f8 01 0f 85 ee 03 00 00 9c 58 f6 c4 02 0f 85 d9 03 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc90001fc7ba0 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff920003f8f76 RCX: 0000000079b85a40
RDX: 1ffff11004acf84e RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff902288a7
R10: fffffbfff2045114 R11: 0000000000000000 R12: 0000000000000002
R13: ffffffff8bf79620 R14: 0000000000000000 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:267 [inline]
 rcu_read_lock include/linux/rcupdate.h:657 [inline]
 batadv_nc_purge_orig_hash net/batman-adv/network-coding.c:404 [inline]
 batadv_nc_worker+0x12d/0xe50 net/batman-adv/network-coding.c:715
 process_one_work+0x98d/0x1600 kernel/workqueue.c:2276
 worker_thread+0x64c/0x1120 kernel/workqueue.c:2422
 kthread+0x3b1/0x4a0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
task:syz-executor.3  state:R  running task     stack:26472 pid:19897 ppid: 23833 flags:0x00004008
Call Trace:
 <IRQ>
 sched_show_task kernel/sched/core.c:7370 [inline]
 sched_show_task+0x443/0x590 kernel/sched/core.c:7344
 rcu_print_detail_task_stall_rnp kernel/rcu/tree_stall.h:228 [inline]
 print_other_cpu_stall kernel/rcu/tree_stall.h:564 [inline]
 check_cpu_stall kernel/rcu/tree_stall.h:708 [inline]
 rcu_pending kernel/rcu/tree.c:3911 [inline]
 rcu_sched_clock_irq+0x1bc4/0x2080 kernel/rcu/tree.c:2649
 update_process_times+0x16d/0x200 kernel/time/timer.c:1796
 tick_sched_handle+0x9b/0x180 kernel/time/tick-sched.c:226
 tick_sched_timer+0x1b0/0x2d0 kernel/time/tick-sched.c:1374
 __run_hrtimer kernel/time/hrtimer.c:1537 [inline]
 __hrtimer_run_queues+0x1c0/0xe40 kernel/time/hrtimer.c:1601
 hrtimer_interrupt+0x330/0xa00 kernel/time/hrtimer.c:1663
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1106
 sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1100
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:mac80211_hwsim_tx_frame_no_nl.isra.0+0x77b/0x1330 drivers/net/wireless/mac80211_hwsim.c:1525
Code: 00 00 00 c6 84 24 98 00 00 00 00 74 bb e8 ed 61 4c fc 48 8d bb a4 3c 00 00 48 89 f8 48 89 fa 48 c1 e8 03 83 e2 07 0f b6 04 28 <38> d0 7f 08 84 c0 0f 85 36 09 00 00 44 0f b6 bb a4 3c 00 00 31 ff
RSP: 0018:ffffc90000007ba0 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffff88807d7d31e0 RCX: 0000000000000100
RDX: 0000000000000004 RSI: ffffffff85287a03 RDI: ffff88807d7d6e84
RBP: dffffc0000000000 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffff85287a39 R11: 0000000000000000 R12: ffff888082feb140
R13: ffff88801f5eb410 R14: ffff88801f5eb1e0 R15: 0000000000000000
 mac80211_hwsim_tx_frame+0x14f/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1780
 mac80211_hwsim_beacon_tx+0x4ba/0x910 drivers/net/wireless/mac80211_hwsim.c:1834
 __iterate_interfaces+0x1e5/0x520 net/mac80211/util.c:793
 ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:829
 mac80211_hwsim_beacon+0xd5/0x1a0 drivers/net/wireless/mac80211_hwsim.c:1857
 __run_hrtimer kernel/time/hrtimer.c:1537 [inline]
 __hrtimer_run_queues+0x609/0xe40 kernel/time/hrtimer.c:1601
 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1618
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:559
 invoke_softirq kernel/softirq.c:433 [inline]
 __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x25/0x40 kernel/locking/spinlock.c:199
Code: 0f 1f 44 00 00 55 48 8b 74 24 08 48 89 fd 48 83 c7 18 e8 0e b5 40 f8 48 89 ef e8 a6 2d 41 f8 e8 81 1f 61 f8 fb bf 01 00 00 00 <e8> 26 24 35 f8 65 8b 05 1f 26 e8 76 85 c0 74 02 5d c3 e8 db 7b e6
RSP: 0018:ffffc90001eef0b8 EFLAGS: 00000202
RAX: 0000000000002473 RBX: 0000000000000001 RCX: 1ffffffff204c2fa
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000001
RBP: ffff8880b9c35640 R08: 0000000000000001 R09: ffffffff90228937
R10: 0000000000000001 R11: 0000000000000000 R12: ffff8880b9c35640
R13: ffff88806b2dd4c0 R14: 0000000000000000 R15: ffff8880268e8000
 finish_lock_switch kernel/sched/core.c:4093 [inline]
 finish_task_switch.isra.0+0x15d/0x810 kernel/sched/core.c:4210
 context_switch kernel/sched/core.c:4342 [inline]
 __schedule+0x91e/0x23e0 kernel/sched/core.c:5147
 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:5535
 irqentry_exit+0x31/0x80 kernel/entry/common.c:427
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:bpf_tree_comp kernel/bpf/core.c:593 [inline]
RIP: 0010:__lt_find include/linux/rbtree_latch.h:115 [inline]
RIP: 0010:latch_tree_find include/linux/rbtree_latch.h:208 [inline]
RIP: 0010:bpf_ksym_find+0xea/0x1c0 kernel/bpf/core.c:671
Code: f4 ff 4f 8d 34 64 49 c1 e6 03 49 f7 de e8 be 1e f4 ff 4e 8d 24 33 49 8d bc 24 60 ff ff ff 48 89 f8 48 c1 e8 03 42 80 3c 28 00 <0f> 85 93 00 00 00 4d 8b bc 24 60 ff ff ff 48 89 ef 4c 89 fe e8 cd
RSP: 0018:ffffc90001eef2c8 EFLAGS: 00000246
RAX: 1ffff1100c554329 RBX: ffff888062aa19e8 RCX: ffffc90016b90000
RDX: 0000000000040000 RSI: ffffffff8180bd32 RDI: ffff888062aa1948
RBP: 00000000004196c4 R08: 00000000004196c4 R09: 0000000000000001
R10: ffffffff8180bd63 R11: 0000000000000000 R12: ffff888062aa19e8
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffffa0050000
 is_bpf_text_address+0x75/0x160 kernel/bpf/core.c:705
 kernel_text_address kernel/extable.c:151 [inline]
 kernel_text_address+0xbd/0xf0 kernel/extable.c:120
 __kernel_text_address+0x9/0x30 kernel/extable.c:105
 unwind_get_return_address arch/x86/kernel/unwind_orc.c:318 [inline]
 unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:313
 arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:121
 kasan_save_stack+0x1b/0x40 mm/kasan/common.c:38
 kasan_set_track mm/kasan/common.c:46 [inline]
 set_alloc_info mm/kasan/common.c:428 [inline]
 __kasan_slab_alloc+0x84/0xa0 mm/kasan/common.c:461
 kasan_slab_alloc include/linux/kasan.h:236 [inline]
 slab_post_alloc_hook mm/slab.h:524 [inline]
 slab_alloc_node mm/slub.c:2914 [inline]
 slab_alloc mm/slub.c:2922 [inline]
 kmem_cache_alloc+0x219/0x3a0 mm/slub.c:2927
 __d_alloc+0x2a/0x950 fs/dcache.c:1744
 d_alloc+0x4a/0x230 fs/dcache.c:1823
 d_alloc_parallel+0xe9/0x1a00 fs/dcache.c:2575
 lookup_open.isra.0+0x863/0x13d0 fs/namei.c:3139
 open_last_lookups fs/namei.c:3285 [inline]
 path_openat+0x9b4/0x27e0 fs/namei.c:3491
 do_filp_open+0x190/0x3d0 fs/namei.c:3521
 do_sys_openat2+0x16d/0x420 fs/open.c:1187
 do_sys_open fs/open.c:1203 [inline]
 __do_sys_openat fs/open.c:1219 [inline]
 __se_sys_openat fs/open.c:1214 [inline]
 __x64_sys_openat+0x13f/0x1f0 fs/open.c:1214
 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4196c4
Code: 84 00 00 00 00 00 44 89 54 24 0c e8 96 f9 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 c8 f9 ff ff 8b 44
RSP: 002b:00007f75bce42060 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004196c4
RDX: 0000000000000002 RSI: 00007f75bce420f0 RDI: 00000000ffffff9c
RBP: 00007f75bce420f0 R08: 0000000000000000 R09: 00007f75bce41f70
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 00007fff773d6c3f R14: 00007f75bce42300 R15: 0000000000022000
task:syz-executor.0  state:R  running task     stack:29120 pid:19893 ppid:  8451 flags:0x00004000
Call Trace:
 context_switch kernel/sched/core.c:4339 [inline]
 __schedule+0x916/0x23e0 kernel/sched/core.c:5147
 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:5535
 irqentry_exit+0x31/0x80 kernel/entry/common.c:427
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:lock_acquire+0x1ef/0x740 kernel/locking/lockdep.c:5480
Code: 72 a7 7e 83 f8 01 0f 85 ee 03 00 00 9c 58 f6 c4 02 0f 85 d9 03 00 00 48 83 7c 24 08 00 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc9000173f990 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff920002e7f34 RCX: 0000000080a6615a
RDX: 1ffff1101000713e RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff902288a7
R10: fffffbfff2045114 R11: 0000000000000000 R12: 0000000000000002
R13: ffffffff8bf79620 R14: 0000000000000000 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:267 [inline]
 rcu_read_lock include/linux/rcupdate.h:657 [inline]
 ext4_get_group_desc+0x146/0x510 fs/ext4/balloc.c:284
 recently_deleted fs/ext4/ialloc.c:684 [inline]
 find_inode_bit+0x1c4/0x580 fs/ext4/ialloc.c:730
 __ext4_new_inode+0xc4d/0x5600 fs/ext4/ialloc.c:1065
 ext4_symlink+0x489/0xd50 fs/ext4/namei.c:3465
 vfs_symlink fs/namei.c:4172 [inline]
 vfs_symlink+0x47d/0x6a0 fs/namei.c:4157
 do_symlinkat+0x27a/0x300 fs/namei.c:4202
 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x465ee7
RSP: 002b:00007fff0aa44b08 EFLAGS: 00000202 ORIG_RAX: 0000000000000058
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000465ee7
RDX: 00007fff0aa44bf3 RSI: 00000000004bfd70 RDI: 00007fff0aa44be0
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007fff0aa449a0
R10: 00007fff0aa44857 R11: 0000000000000202 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007fff0aa44be0
rcu: rcu_preempt kthread starved for 10501 jiffies! g209249 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:28192 pid:   14 ppid:     2 flags:0x00004000
Call Trace:
 context_switch kernel/sched/core.c:4339 [inline]
 __schedule+0x916/0x23e0 kernel/sched/core.c:5147
 schedule+0xcf/0x270 kernel/sched/core.c:5226
 schedule_timeout+0x14a/0x250 kernel/time/timer.c:1892
 rcu_gp_fqs_loop kernel/rcu/tree.c:2004 [inline]
 rcu_gp_kthread+0xd07/0x2300 kernel/rcu/tree.c:2177
 kthread+0x3b1/0x4a0 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 19896 Comm: syz-executor.4 Not tainted 5.13.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:__lock_acquire+0x7a/0x5230 kernel/locking/lockdep.c:4760
Code: 24 20 48 8d 84 24 88 00 00 00 48 c1 e8 03 48 89 44 24 28 48 89 c6 48 b8 00 00 00 00 00 fc ff df 48 8d 14 06 c7 02 f1 f1 f1 f1 <c7> 42 04 00 f3 f3 f3 48 c7 c2 4c ac c9 8d 65 48 8b 1c 25 28 00 00
RSP: 0018:ffffc90000dc05f0 EFLAGS: 00000806
RAX: dffffc0000000000 RBX: 1ffff920001b80e8 RCX: 0000000000000002
RDX: fffff520001b80cf RSI: 1ffff920001b80cf RDI: ffffffff8bf98488
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: fffffbfff1b92f32 R11: 0000000000000000 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff8bf98488 R15: 0000000000000002
FS:  00007fdd14f31700(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000051b130 CR3: 000000007bc52000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 lock_acquire kernel/locking/lockdep.c:5512 [inline]
 lock_acquire+0x1ab/0x740 kernel/locking/lockdep.c:5477
 seqcount_lockdep_reader_access include/linux/seqlock.h:103 [inline]
 timekeeping_get_delta kernel/time/timekeeping.c:252 [inline]
 timekeeping_get_ns kernel/time/timekeeping.c:386 [inline]
 ktime_get_update_offsets_now+0x14d/0x5c0 kernel/time/timekeeping.c:2298
 hrtimer_update_base kernel/time/hrtimer.c:631 [inline]
 hrtimer_interrupt+0x142/0xa00 kernel/time/hrtimer.c:1645
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1089 [inline]
 __sysvec_apic_timer_interrupt+0x146/0x540 arch/x86/kernel/apic/apic.c:1106
 sysvec_apic_timer_interrupt+0x40/0xc0 arch/x86/kernel/apic/apic.c:1100
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:trylock_clear_pending kernel/locking/qspinlock_paravirt.h:121 [inline]
RIP: 0010:pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:435 [inline]
RIP: 0010:__pv_queued_spin_lock_slowpath+0x3c4/0xb40 kernel/locking/qspinlock.c:508
Code: 00 48 c1 e9 03 83 e3 07 41 be 01 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8d 2c 01 eb 0c f3 90 41 83 ec 01 0f 84 72 04 00 00 <41> 0f b6 45 00 38 d8 7f 08 84 c0 0f 85 91 05 00 00 0f b6 45 00 84
RSP: 0018:ffffc90000dc0a30 EFLAGS: 00000202
RAX: 0000000000000003 RBX: 0000000000000000 RCX: 1ffffffff19ac710
RDX: 0000000000000001 RSI: ffffffff817ae961 RDI: ffffffff8132b571
RBP: ffffffff8cd63880 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817ae929 R11: 0000000000000080 R12: 0000000000000cdc
R13: fffffbfff19ac710 R14: 0000000000000001 R15: ffff8880b9d36400
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline]
 do_raw_spin_lock+0x200/0x2b0 kernel/locking/spinlock_debug.c:113
 spin_lock include/linux/spinlock.h:354 [inline]
 mac80211_hwsim_tx_frame_no_nl.isra.0+0x68f/0x1330 drivers/net/wireless/mac80211_hwsim.c:1514
 mac80211_hwsim_tx_frame+0x14f/0x1e0 drivers/net/wireless/mac80211_hwsim.c:1780
 mac80211_hwsim_beacon_tx+0x4ba/0x910 drivers/net/wireless/mac80211_hwsim.c:1834
 __iterate_interfaces+0x1e5/0x520 net/mac80211/util.c:793
 ieee80211_iterate_active_interfaces_atomic+0x8d/0x170 net/mac80211/util.c:829
 mac80211_hwsim_beacon+0xd5/0x1a0 drivers/net/wireless/mac80211_hwsim.c:1857
 __run_hrtimer kernel/time/hrtimer.c:1537 [inline]
 __hrtimer_run_queues+0x609/0xe40 kernel/time/hrtimer.c:1601
 hrtimer_run_softirq+0x17b/0x360 kernel/time/hrtimer.c:1618
 __do_softirq+0x29b/0x9f6 kernel/softirq.c:559
 invoke_softirq kernel/softirq.c:433 [inline]
 __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649
 sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1100
 </IRQ>
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:schedule_debug kernel/sched/core.c:4892 [inline]
RIP: 0010:__schedule+0x136/0x23e0 kernel/sched/core.c:5038
Code: 55 1c 00 00 48 b8 00 00 00 00 00 fc ff df 4d 8b 7d 20 4c 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 28 1d 00 00 49 81 3f 9d 6e ac 57 <0f> 85 7f 22 00 00 49 8d 45 18 84 db 48 89 85 68 ff ff ff 75 28 48
RSP: 0018:ffffc90001edfbf0 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000000001 RCX: 1ffff920003dbf86
RDX: 1ffff920003db000 RSI: 0000000000000001 RDI: ffff8880268eb8a0
RBP: ffffc90001edfcb8 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff817ae948 R11: 0000000000000001 R12: ffff8880b9d35640
R13: ffff8880268eb880 R14: 0000000000035640 R15: ffffc90001ed8000
 preempt_schedule_irq+0x4e/0x90 kernel/sched/core.c:5535
 irqentry_exit+0x31/0x80 kernel/entry/common.c:427
 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:647
RIP: 0010:kmem_cache_alloc+0x2e/0x3a0 mm/slub.c:2927
Code: 41 89 f6 41 55 41 54 55 48 89 fd 53 48 83 ec 10 44 8b 3d 59 e0 0f 0c 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 31 c0 8b 5f 1c <4c> 8b 6c 24 40 41 21 f7 44 89 ff e8 52 3b f6 ff 44 89 ff e8 5a 3a
RSP: 0018:ffffc90001edfd98 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000240 RCX: ffffc9001276e000
RDX: 0000000000040000 RSI: 0000000000000dc0 RDI: ffff8880285ff500
RBP: ffff8880285ff500 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff8704514e R11: 0000000000000001 R12: ffff888076bf6a00
R13: ffff888027aec800 R14: 0000000000000dc0 R15: 0000000000ffffff
 kmem_cache_zalloc include/linux/slab.h:676 [inline]
 kcm_create+0x24e/0x920 net/kcm/kcmsock.c:1966
 __sock_create+0x3de/0x780 net/socket.c:1395
 sock_create net/socket.c:1446 [inline]
 __sys_socket+0xef/0x200 net/socket.c:1488
 __do_sys_socket net/socket.c:1497 [inline]
 __se_sys_socket net/socket.c:1495 [inline]
 __x64_sys_socket+0x6f/0xb0 net/socket.c:1495
 do_syscall_64+0x3a/0xb0 arch/x86/entry/common.c:47
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x4665d9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fdd14f31188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000029
RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80
R13: 00007ffc38ccdfef R14: 00007fdd14f31300 R15: 0000000000022000