rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P6120/1:b..l
	(detected by 0, t=10502 jiffies, g=18097, q=65 ncpus=2)
task:syz.3.550       state:R  running task     stack:24880 pid:6120  ppid:4284   flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5246 [inline]
 __schedule+0x107f/0x4030 kernel/sched/core.c:6563
 preempt_schedule_irq+0xbb/0x160 kernel/sched/core.c:6875
 irqentry_exit+0x63/0x70 kernel/entry/common.c:442
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:lock_acquire+0x226/0x4a0 kernel/locking/lockdep.c:5794
Code: f7 84 24 80 00 00 00 00 02 00 00 43 c6 44 3c 04 f8 0f 85 ef 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 3c 00 00 00 00 43 c7 44 3c 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc9000507f200 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 05e20210597b5b00
RDX: 0000000000000000 RSI: ffffffff8aac2b20 RDI: ffffffff8aff71e0
RBP: ffffc9000507f308 R08: dffffc0000000000 R09: 1ffffffff236e048
R10: dffffc0000000000 R11: fffffbfff236e049 R12: 1ffff92000a0fe4c
R13: 0000000000000001 R14: 0000000000000246 R15: dffffc0000000000
 rcu_lock_acquire include/linux/rcupdate.h:350 [inline]
 rcu_read_lock include/linux/rcupdate.h:791 [inline]
 count_memcg_event_mm+0xab/0x3c0 include/linux/memcontrol.h:1095
 handle_mm_fault+0x13d/0x3d40 mm/memory.c:5270
 do_user_addr_fault+0x58e/0xb20 arch/x86/mm/fault.c:1338
 handle_page_fault arch/x86/mm/fault.c:1429 [inline]
 exc_page_fault+0x60/0x100 arch/x86/mm/fault.c:1482
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0010:copy_user_enhanced_fast_string+0xa/0x40 arch/x86/lib/copy_user_64.S:166
Code: ff c9 75 f2 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 01 ca c3 8d 0c ca 89 ca eb 20 0f 01 cb 83 fa 40 72 38 89 d1 <f3> a4 31 c0 0f 01 ca c3 89 ca eb 0a 90 90 90 90 90 90 90 90 90 90
RSP: 0018:ffffc9000507f788 EFLAGS: 00050206
RAX: ffffffff8414b201 RBX: 0000000000033fe0 RCX: 0000000000022e20
RDX: 0000000000033fe0 RSI: 0000200000012000 RDI: ffffc9000595c1c0
RBP: 0000000000000000 R08: ffffc9000597efdf R09: 1ffff92000b2fdfb
R10: dffffc0000000000 R11: fffff52000b2fdfc R12: 00007ffffffcb020
R13: 0000000000000000 R14: 0000200000000e40 R15: ffffc9000594b000
 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
 raw_copy_from_user arch/x86/include/asm/uaccess_64.h:52 [inline]
 copyin+0xe7/0x120 lib/iov_iter.c:183
 _copy_from_iter+0x447/0x1130 lib/iov_iter.c:632
 copy_from_iter include/linux/uio.h:187 [inline]
 copy_from_iter_full include/linux/uio.h:194 [inline]
 memcpy_from_msg include/linux/skbuff.h:4076 [inline]
 netlink_sendmsg+0x755/0xbd0 net/netlink/af_netlink.c:1862
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 ____sys_sendmsg+0x5ed/0x9a0 net/socket.c:2519
 ___sys_sendmsg+0x2a2/0x360 net/socket.c:2573
 __sys_sendmsg net/socket.c:2602 [inline]
 __do_sys_sendmsg net/socket.c:2611 [inline]
 __se_sys_sendmsg+0x1c3/0x2b0 net/socket.c:2609
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f500879f559
RSP: 002b:00007f500973b028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f5008a25fa0 RCX: 00007f500879f559
RDX: 0000000000000000 RSI: 0000200000000dc0 RDI: 000000000000000a
RBP: 00007f5008836b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5008a26038 R14: 00007f5008a25fa0 R15: 00007ffc45297658
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10501 jiffies! g18097 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=9081
rcu: rcu_preempt kthread starved for 10502 jiffies! g18097 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:27840 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5246 [inline]
 __schedule+0x107f/0x4030 kernel/sched/core.c:6563
 schedule+0xb9/0x180 kernel/sched/core.c:6639
 schedule_timeout+0x184/0x2d0 kernel/time/timer.c:2168
 rcu_gp_fqs_loop+0x303/0x1350 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0x99/0x3b0 kernel/rcu/tree.c:1905
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>
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: 6121 Comm: syz.2.552 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/07/2026
RIP: 0010:asm_sysvec_irq_work+0x0/0x20 arch/x86/include/asm/idtentry.h:722
Code: e9 b5 03 00 00 90 90 90 90 90 0f 01 ca fc 6a ff e8 b5 02 00 00 48 89 c4 48 89 e7 e8 2a b8 da ff e9 95 03 00 00 90 90 90 90 90 <0f> 01 ca fc 6a ff e8 95 02 00 00 48 89 c4 48 89 e7 e8 fa bc da ff
RSP: 0018:ffffc900001e0ab8 EFLAGS: 00000006
RAX: 4c1d24322caafe00 RBX: 1ffff9200003c164 RCX: 4c1d24322caafe00
RDX: dffffc0000000000 RSI: ffffffff8aac19a0 RDI: ffffffff8aff71e0
RBP: ffffc900001e0bd0 R08: ffffffff91b7024f R09: 1ffffffff236e049
R10: dffffc0000000000 R11: fffffbfff236e04a R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8d3bb00 R15: 0000000000000002
FS:  00007fad7b4eb6c0(0000) GS:ffff8880b8d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000012000 CR3: 000000001ff35000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
RIP: 0010:rcu_read_unlock_special+0x7f/0x510 kernel/rcu/tree_plugin.h:685
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 d2 68 95 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc900001e0ae0 EFLAGS: 00000206
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 ieee80211_iterate_active_interfaces_atomic+0x156/0x170 net/mac80211/util.c:826
 mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2153
 __run_hrtimer kernel/time/hrtimer.c:1751 [inline]
 __hrtimer_run_queues+0x522/0xc90 kernel/time/hrtimer.c:1815
 hrtimer_run_softirq+0x173/0x290 kernel/time/hrtimer.c:1832
 handle_softirqs+0x291/0x910 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:find_va_links mm/vmalloc.c:963 [inline]
RIP: 0010:insert_vmap_area+0x6f/0x2f0 mm/vmalloc.c:1157
Code: f7 e8 c5 15 0d 00 4d 8b 36 48 c1 ed 03 4c 8d 7b f0 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 a4 15 0d 00 4d 8b 27 <4c> 89 f7 4c 89 e6 e8 86 bb bb ff 4d 39 e6 76 5b 42 80 7c 2d 00 00
RSP: 0018:ffffc90004a17000 EFLAGS: 00000246
RAX: 1ffff1100567dc78 RBX: ffff88802b3ee3d0 RCX: 0000000000080000
RDX: ffffc9000ce79000 RSI: 000000000000f2a6 RDI: 000000000000f2a7
RBP: 1ffff11003f78060 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000942df8 R12: ffffc90006b31000
R13: dffffc0000000000 R14: ffffc900059a5000 R15: ffff88802b3ee3c0
 alloc_vmap_area+0x170f/0x18d0 mm/vmalloc.c:1704
 __get_vm_area_node+0x158/0x330 mm/vmalloc.c:2570
 __vmalloc_node_range+0x357/0x1380 mm/vmalloc.c:3260
 __vmalloc_node mm/vmalloc.c:3365 [inline]
 vzalloc+0x75/0x80 mm/vmalloc.c:3438
 bpf_check+0x227/0x11060 kernel/bpf/verifier.c:15533
 bpf_prog_load+0x100e/0x1530 kernel/bpf/syscall.c:2651
 __sys_bpf+0x5b8/0x780 kernel/bpf/syscall.c:5035
 __do_sys_bpf kernel/bpf/syscall.c:5139 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5137 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5137
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fad7a59f559
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fad7b4eb028 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007fad7a825fa0 RCX: 00007fad7a59f559
RDX: 0000000000000090 RSI: 0000200000000780 RDI: 0000000000000005
RBP: 00007fad7a636b20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fad7a826038 R14: 00007fad7a825fa0 R15: 00007ffc53088128
 </TASK>