rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=1514/1/0x4000000000000000 softirq=65397/65402 fqs=0
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P11523/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=46173, q=139 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 11535 Comm: syz.3.1557 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:do_raw_spin_unlock+0x7b/0x240
Code: c1 e8 03 42 0f b6 04 20 84 c0 0f 85 74 01 00 00 83 3b 00 0f 84 ea 00 00 00 4c 8d 73 10 4d 89 f5 49 c1 ed 03 43 80 7c 25 00 00 <74> 08 4c 89 f7 e8 bb cc 85 00 65 48 8b 04 25 08 10 a1 92 49 39 06
RSP: 0018:ffffc90000006b08 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff88804b027a80 RCX: ffffffff819e1c4d
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88804b027a80
RBP: ffffc90000006bd8 R08: ffff88804b027a83 R09: 1ffff11009604f50
R10: dffffc0000000000 R11: ffffed1009604f51 R12: dffffc0000000000
R13: 1ffff11009604f52 R14: ffff88804b027a90 R15: 1ffff92000000d68
FS:  00007f905e6aa6c0(0000) GS:ffff8880b860f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c31a32a CR3: 000000002566a000 CR4: 00000000000006f0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 _raw_spin_unlock_irqrestore+0x78/0x110
 hrtimer_try_to_cancel+0x3be/0x420
 hrtimer_cancel+0x3b/0x50
 cpu_clock_event_stop+0xd9/0x130
 __perf_event_overflow+0x580/0xe40
 perf_swevent_hrtimer+0x3c5/0x550
 __hrtimer_run_queues+0x4e0/0xc60
 hrtimer_interrupt+0x45b/0xaa0
 __sysvec_apic_timer_interrupt+0x10b/0x410
 sysvec_apic_timer_interrupt+0x52/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:unwind_next_frame+0x3ba/0x2390
Code: 0f b6 44 24 01 83 e0 07 0f 84 75 15 00 00 83 f8 01 4c 8b 7c 24 48 48 bd 00 00 00 00 00 fc ff df 4c 8b 64 24 20 4c 8b 6c 24 50 <0f> 84 81 15 00 00 e9 fa 00 00 00 4c 89 e7 e8 c3 f2 37 00 48 85 c0
RSP: 0018:ffffc90000007378 EFLAGS: 00000202
RAX: 0000000000000002 RBX: ffffffff90225fa4 RCX: ffffffff90225fa8
RDX: ffffffff90d3ceea RSI: ffffffff90d3ceea RDI: ffffffff8be34420
RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffffff8172d195
R10: ffffc90000007498 R11: ffffffff81ac5140 R12: 1ffff92000000e89
R13: ffffc90000007498 R14: ffffc90000007448 R15: ffffffff8172d195
 arch_stack_walk+0x11c/0x150
 stack_trace_save+0x9c/0xe0
 kasan_save_track+0x3e/0x80
 __kasan_slab_alloc+0x6c/0x80
 kmem_cache_alloc_node_noprof+0x1bb/0x3c0
 kmalloc_reserve+0xbd/0x290
 __alloc_skb+0x142/0x2d0
 skb_copy+0x188/0x800
 mac80211_hwsim_tx_frame_no_nl+0xcd3/0x11c0
 mac80211_hwsim_tx_frame+0x1b5/0x200
 mac80211_hwsim_beacon_tx+0x3f0/0x860
 __iterate_interfaces+0x2ab/0x590
 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180
 mac80211_hwsim_beacon+0xbb/0x1c0
 __hrtimer_run_queues+0x52c/0xc60
 hrtimer_run_softirq+0x187/0x2b0
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:preempt_schedule_irq+0xb0/0x150
Code: 24 20 f6 44 24 21 02 74 0c 90 0f 0b 48 f7 03 08 00 00 00 74 64 bf 01 00 00 00 e8 eb be 13 f6 e8 b6 1b 4b f6 fb bf 01 00 00 00 <e8> 5b ab ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc9000402f740 EFLAGS: 00000286
RAX: f5c20181f1f4ac00 RBX: 0000000000000000 RCX: f5c20181f1f4ac00
RDX: 0000000000000000 RSI: ffffffff8d9bb5e6 RDI: 0000000000000001
RBP: ffffc9000402f7e0 R08: ffffffff8fa3c237 R09: 1ffffffff1f47846
R10: dffffc0000000000 R11: fffffbfff1f47847 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000805ee8
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:lock_release+0x2b5/0x3e0
Code: 51 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 75 56 f7 c3 00 02 00 00 74 01 fb 65 48 8b 05 cb 88 03 11 <48> 3b 44 24 28 0f 85 8b 00 00 00 48 83 c4 30 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc9000402f8a8 EFLAGS: 00000206
RAX: f5c20181f1f4ac00 RBX: 0000000000000202 RCX: f5c20181f1f4ac00
RDX: 0000000000000000 RSI: ffffffff8dbaacc4 RDI: ffffffff8be34480
RBP: ffff8880201a27b0 R08: ffff88803b645e1b R09: 1ffff110076c8bc3
R10: dffffc0000000000 R11: ffffed10076c8bc4 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8e13a160 R15: ffff8880201a1cc0
 leave_rcu+0xfb/0x160
 try_to_unlazy+0x2e0/0x580
 path_openat+0x806/0x3830
 do_filp_open+0x1fa/0x410
 do_sys_openat2+0x121/0x1c0
 __x64_sys_openat+0x138/0x170
 do_syscall_64+0xfa/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f905d78ec29
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f905e6aa038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f905d9d5fa0 RCX: 00007f905d78ec29
RDX: 00000000000026e1 RSI: 0000200000000240 RDI: ffffffffffffff9c
RBP: 00007f905d811e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f905d9d6038 R14: 00007f905d9d5fa0 R15: 00007ffc734bff28
 </TASK>
task:syz.4.1550      state:R  running task     stack:21968 pid:11523 tgid:11523 ppid:11288  task_flags:0x400640 flags:0x00004002
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 preempt_schedule_irq+0xb5/0x150
 irqentry_exit+0x6f/0x90
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:xas_load+0x1c1/0x5b0
Code: ff 89 c6 e8 b1 ce 46 f6 45 85 ed 74 2c 49 83 c4 18 4c 89 e7 be ff ff ff ff e8 ab 2f 02 00 41 89 c4 31 ff 89 c6 e8 8f ce 46 f6 <45> 85 e4 49 89 dd 74 11 e8 42 ca 46 f6 eb 29 e8 3b ca 46 f6 49 89
RSP: 0018:ffffc90003e8e870 EFLAGS: 00000293
RAX: ffffffff8b78fb51 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff8880208b1cc0 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90003e8e938 R08: 0000000000000000 R09: ffffffff81f76a8d
R10: ffffc90003e8e940 R11: fffff520007d1d2b R12: 0000000000000000
R13: 0000000000000001 R14: ffff888108950b02 R15: 0000000000000069
 filemap_get_entry+0x168/0x2f0
 shmem_get_folio_gfp+0x237/0x1660
 shmem_write_begin+0xf7/0x2b0
 generic_perform_write+0x2c5/0x900
 shmem_file_write_iter+0xf8/0x120
 __kernel_write_iter+0x428/0x910
 dump_user_range+0x8a0/0xc90
 elf_core_dump+0x337b/0x3990
 coredump_write+0x1169/0x1900
 vfs_coredump+0x1daa/0x2a50
 get_signal+0x1109/0x1340
 arch_do_signal_or_restart+0x9a/0x750
 irqentry_exit_to_user_mode+0x81/0x120
 exc_page_fault+0x9f/0xf0
 asm_exc_page_fault+0x26/0x30
RIP: 0033:0x504f5f
RSP: 002b:0000200000000108 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f6741fd5fa0 RCX: 00007f6741d8ec29
RDX: 0000200000000140 RSI: 0000200000000100 RDI: 0000000068001680
RBP: 00007f6741e11e41 R08: 0000200000000240 R09: 0000200000000240
R10: 0000200000000200 R11: 0000000000000202 R12: 0000000000000000
R13: 00007f6741fd6038 R14: 00007f6741fd5fa0 R15: 00007ffef18ca9e8
 </TASK>
rcu: rcu_preempt kthread starved for 10502 jiffies! g46173 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:26920 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_timeout+0x12b/0x270
 rcu_gp_fqs_loop+0x301/0x1540
 rcu_gp_kthread+0x99/0x390
 kthread+0x711/0x8a0
 ret_from_fork+0x439/0x7d0
 ret_from_fork_asm+0x1a/0x30
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 11529 Comm: syz.5.1555 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:native_queued_spin_lock_slowpath+0xcb/0x8e0
Code: 41 bd 01 00 00 00 eb 06 89 44 24 60 f3 90 48 89 df be 04 00 00 00 e8 54 1d a6 f6 48 b8 00 00 00 00 00 fc ff df 41 0f b6 04 07 <84> c0 75 35 8b 03 89 44 24 60 85 c0 75 d4 48 89 df be 04 00 00 00
RSP: 0018:ffffc900001e07a0 EFLAGS: 00000256
RAX: 0000000000000000 RBX: ffffffff8ed75f00 RCX: ffffffff8b7dce5c
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8ed75f00
RBP: ffffc900001e0898 R08: ffffffff8ed75f03 R09: 1ffffffff1daebe0
R10: dffffc0000000000 R11: fffffbfff1daebe1 R12: 1ffff9200003c0fc
R13: 0000000000000001 R14: ffffc900001e0800 R15: 1ffffffff1daebe0
FS:  000055555a173500(0000) GS:ffff8881a3c0f000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001d80 CR3: 0000000036ab8000 CR4: 00000000000006f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 queued_spin_lock_slowpath+0x43/0x50
 do_raw_spin_lock+0x21f/0x290
 mac80211_hwsim_tx_frame_no_nl+0x718/0x11c0
 mac80211_hwsim_tx_frame+0x1b5/0x200
 mac80211_hwsim_beacon_tx+0x3f0/0x860
 __iterate_interfaces+0x2ab/0x590
 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180
 mac80211_hwsim_beacon+0xbb/0x1c0
 __hrtimer_run_queues+0x52c/0xc60
 hrtimer_run_softirq+0x187/0x2b0
 handle_softirqs+0x286/0x870
 __irq_exit_rcu+0xca/0x1f0
 irq_exit_rcu+0x9/0x30
 sysvec_apic_timer_interrupt+0xa6/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:smp_call_function_many_cond+0xd33/0x12d0
Code: 45 8b 2c 24 44 89 ee 83 e6 01 31 ff e8 b6 63 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 61 5f 0b 00 eb 38 f3 90 <42> 0f b6 04 2b 84 c0 75 11 41 f7 04 24 01 00 00 00 74 1e e8 45 5f
RSP: 0018:ffffc9000431f8a0 EFLAGS: 00000293
RAX: ffffffff81b4665b RBX: 1ffff11009608341 RCX: ffff888025c43980
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000431fa20 R08: ffffffff8fa3c237 R09: 1ffffffff1f47846
R10: dffffc0000000000 R11: fffffbfff1f47847 R12: ffff88804b041a08
R13: dffffc0000000000 R14: ffff88813663b1c0 R15: 0000000000000000
 on_each_cpu_cond_mask+0x3f/0x80
 smp_text_poke_batch_finish+0x5f9/0x1130
 arch_jump_label_transform_apply+0x1c/0x30
 static_key_disable_cpuslocked+0xc5/0x1b0
 static_key_disable+0x1a/0x20
 tracepoint_probe_unregister+0x80e/0x9b0
 trace_event_reg+0x153/0x270
 perf_trace_event_unreg+0xb9/0x1b0
 perf_trace_destroy+0xa4/0x150
 __free_event+0x346/0x7e0
 perf_event_release_kernel+0x45b/0x510
 perf_release+0x38/0x50
 __fput+0x44c/0xa70
 task_work_run+0x1d4/0x260
 exit_to_user_mode_loop+0xec/0x110
 do_syscall_64+0x2bd/0x3b0
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe92378ec29
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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe52f61bb8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00000000000565da RCX: 00007fe92378ec29
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fe9239d7da0 R08: 0000000000000001 R09: 0000001152f61eaf
R10: 0000001b2e420000 R11: 0000000000000246 R12: 00007fe9239d5fac
R13: 00007fe9239d5fa0 R14: ffffffffffffffff R15: 00007ffe52f61cd0
 </TASK>
sched: DL replenish lagged too much
