last executing test programs:

kernel console output (not intermixed with test programs):

Warning: Permanently added '[localhost]:59933' (ED25519) to the list of known hosts.
syzkaller login: [   56.398317][ T5532] cgroup: Unknown subsys name 'net'
[   56.468045][ T5532] cgroup: Unknown subsys name 'cpuset'
[   56.472830][ T5532] cgroup: Unknown subsys name 'rlimit'
[   56.600846][ T5573] 
[   56.601979][ T5573] ================================================
[   56.604488][ T5573] WARNING: lock held when returning to user space!
[   56.607060][ T5573] syzkaller #0 Not tainted
[   56.608808][ T5573] ------------------------------------------------
[   56.611334][ T5573] dhcpcd-run-hook/5573 is leaving the kernel with locks still held!
[   56.614385][ T5573] 1 lock held by dhcpcd-run-hook/5573:
[   56.616540][ T5573]  #0: ffffffff8e95cd60 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240
[   56.620494][ T5573] ------------[ cut here ]------------
[   56.622661][ T5573] Voluntary context switch within RCU read-side critical section!
[   56.622670][ T5573] WARNING: kernel/rcu/tree_plugin.h:332 at rcu_note_context_switch+0xcac/0xf40, CPU#1: dhcpcd-run-hook/5573
[   56.630230][ T5573] Modules linked in:
[   56.631790][ T5573] CPU: 1 UID: 0 PID: 5573 Comm: dhcpcd-run-hook Not tainted syzkaller #0 PREEMPT(full) 
[   56.635400][ T5573] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[   56.639174][ T5573] RIP: 0010:rcu_note_context_switch+0xcac/0xf40
[   56.641690][ T5573] Code: 00 41 c6 45 00 00 48 8b 3d 91 cc 84 0e 48 81 c4 b8 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 8b 60 ff ff 48 8d 3d 24 af 88 0e <67> 48 0f b9 3a e9 1b f4 ff ff 90 0f 0b 90 45 84 e4 0f 84 ea f3 ff
[   56.648696][ T5573] RSP: 0000:ffffc900044f7b90 EFLAGS: 00010002
[   56.651006][ T5573] RAX: 0000000000000000 RBX: ffff888111e33b00 RCX: 0000000000000002
[   56.654196][ T5573] RDX: 0000000000000000 RSI: ffffffff8c2883c0 RDI: ffffffff90342720
[   56.657337][ T5573] RBP: dffffc0000000000 R08: ffffffff903096f7 R09: 1ffffffff20612de
[   56.660480][ T5573] R10: dffffc0000000000 R11: fffffbfff20612df R12: 0000000000000000
[   56.663590][ T5573] R13: ffff888111e33b00 R14: ffff88823c63be80 R15: ffff888111e33fc4
[   56.666920][ T5573] FS:  0000000000000000(0000) GS:ffff8882a9293000(0000) knlGS:0000000000000000
[   56.670441][ T5573] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   56.673033][ T5573] CR2: 00007f8d1f7ef0a0 CR3: 00000001bdc10000 CR4: 00000000000006f0
[   56.676218][ T5573] Call Trace:
[   56.677591][ T5573]  <TASK>
[   56.678784][ T5573]  ? do_raw_spin_lock+0x12b/0x2f0
[   56.680797][ T5573]  ? rcu_report_qs_rdp+0x7a/0x4e0
[   56.682799][ T5573]  ? __pfx_do_raw_spin_lock+0x10/0x10
[   56.684971][ T5573]  ? rcu_is_watching+0x15/0xb0
[   56.686861][ T5573]  __schedule+0x2e6/0x5680
[   56.688739][ T5573]  ? rcu_is_watching+0x15/0xb0
[   56.691915][ T5573]  ? kvm_sched_clock_read+0x11/0x20
[   56.694021][ T5573]  ? sched_clock+0x3f/0x60
[   56.695848][ T5573]  ? sched_clock_cpu+0x74/0x440
[   56.697826][ T5573]  ? __pfx_sched_clock_cpu+0x10/0x10
[   56.699940][ T5573]  ? __pfx_rcu_core+0x10/0x10
[   56.701834][ T5573]  ? __pfx___schedule+0x10/0x10
[   56.703814][ T5573]  ? preempt_schedule_notrace_thunk+0x16/0x30
[   56.706228][ T5573]  schedule+0x164/0x360
[   56.707938][ T5573]  irqentry_exit+0x263/0x730
[   56.709808][ T5573]  asm_sysvec_apic_timer_interrupt+0x1a/0x20
[   56.712189][ T5573] RIP: 0033:0x7f8d1fa77105
[   56.714123][ T5573] Code: 47 d6 4d 89 d7 4d 39 d0 73 7f 44 89 d8 83 e0 02 89 85 f4 fe ff ff 74 3e 4c 89 f9 31 c0 4c 89 c7 4c 29 c1 83 bd f4 fe ff ff 00 <f3> aa 75 5b 48 8b 35 88 79 02 00 44 89 da 44 89 9d f4 fe ff ff 48
[   56.721817][ T5573] RSP: 002b:00007ffd8bdfc140 EFLAGS: 00010202
[   56.724219][ T5573] RAX: 0000000000000000 RBX: 00007ffd8bdfc1e8 RCX: 0000000000000f60
[   56.727354][ T5573] RDX: 0000000000000003 RSI: 0000000000001000 RDI: 00007f8d1f7ef0a0
[   56.730435][ T5573] RBP: 00007ffd8bdfc510 R08: 00007f8d1f7ef0a0 R09: 000000000000b000
[   56.733418][ T5573] R10: 00007f8d1f7f0000 R11: 0000000000000003 R12: 00007f8d1fa66a00
[   56.737208][ T5573] R13: 00007ffd8bdfc598 R14: 00007f8d1f7f1888 R15: 00007f8d1f7f0000
[   56.740268][ T5573]  </TASK>
[   56.741507][ T5573] Kernel panic - not syncing: kernel: panic_on_warn set ...
[   56.744196][ T5573] CPU: 1 UID: 0 PID: 5573 Comm: dhcpcd-run-hook Not tainted syzkaller #0 PREEMPT(full) 
[   56.747773][ T5573] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[   56.751507][ T5573] Call Trace:
[   56.752814][ T5573]  <TASK>
[   56.753924][ T5573]  vpanic+0x56c/0xa60
[   56.755486][ T5573]  ? __pfx__printk+0x10/0x10
[   56.757297][ T5573]  ? __pfx_vpanic+0x10/0x10
[   56.759050][ T5573]  ? is_bpf_text_address+0x292/0x2b0
[   56.761065][ T5573]  ? is_bpf_text_address+0x26/0x2b0
[   56.763116][ T5573]  panic+0xc5/0xd0
[   56.764620][ T5573]  ? __pfx_panic+0x10/0x10
[   56.766360][ T5573]  __warn+0x315/0x4c0
[   56.767859][ T5573]  ? rcu_note_context_switch+0xcac/0xf40
[   56.769854][ T5573]  ? rcu_note_context_switch+0xcac/0xf40
[   56.771975][ T5573]  __report_bug+0x29a/0x540
[   56.773730][ T5573]  ? sched_balance_rq+0x1a66/0x5a60
[   56.775727][ T5573]  ? rcu_note_context_switch+0xcac/0xf40
[   56.777904][ T5573]  ? __pfx___report_bug+0x10/0x10
[   56.779888][ T5573]  report_bug_entry+0x19a/0x290
[   56.781763][ T5573]  ? rcu_note_context_switch+0xcac/0xf40
[   56.783908][ T5573]  ? rcu_note_context_switch+0xcb1/0xf40
[   56.786007][ T5573]  handle_bug+0xce/0x200
[   56.787873][ T5573]  exc_invalid_op+0x1a/0x50
[   56.789525][ T5573]  asm_exc_invalid_op+0x1a/0x20
[   56.791334][ T5573] RIP: 0010:rcu_note_context_switch+0xcac/0xf40
[   56.793681][ T5573] Code: 00 41 c6 45 00 00 48 8b 3d 91 cc 84 0e 48 81 c4 b8 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 8b 60 ff ff 48 8d 3d 24 af 88 0e <67> 48 0f b9 3a e9 1b f4 ff ff 90 0f 0b 90 45 84 e4 0f 84 ea f3 ff
[   56.800952][ T5573] RSP: 0000:ffffc900044f7b90 EFLAGS: 00010002
[   56.803259][ T5573] RAX: 0000000000000000 RBX: ffff888111e33b00 RCX: 0000000000000002
[   56.806186][ T5573] RDX: 0000000000000000 RSI: ffffffff8c2883c0 RDI: ffffffff90342720
[   56.809133][ T5573] RBP: dffffc0000000000 R08: ffffffff903096f7 R09: 1ffffffff20612de
[   56.812156][ T5573] R10: dffffc0000000000 R11: fffffbfff20612df R12: 0000000000000000
[   56.815323][ T5573] R13: ffff888111e33b00 R14: ffff88823c63be80 R15: ffff888111e33fc4
[   56.818326][ T5573]  ? do_raw_spin_lock+0x12b/0x2f0
[   56.820219][ T5573]  ? rcu_report_qs_rdp+0x7a/0x4e0
[   56.822174][ T5573]  ? __pfx_do_raw_spin_lock+0x10/0x10
[   56.824239][ T5573]  ? rcu_is_watching+0x15/0xb0
[   56.826112][ T5573]  __schedule+0x2e6/0x5680
[   56.827837][ T5573]  ? rcu_is_watching+0x15/0xb0
[   56.829670][ T5573]  ? kvm_sched_clock_read+0x11/0x20
[   56.831676][ T5573]  ? sched_clock+0x3f/0x60
[   56.833402][ T5573]  ? sched_clock_cpu+0x74/0x440
[   56.835262][ T5573]  ? __pfx_sched_clock_cpu+0x10/0x10
[   56.837267][ T5573]  ? __pfx_rcu_core+0x10/0x10
[   56.839087][ T5573]  ? __pfx___schedule+0x10/0x10
[   56.840959][ T5573]  ? preempt_schedule_notrace_thunk+0x16/0x30
[   56.843264][ T5573]  schedule+0x164/0x360
[   56.844884][ T5573]  irqentry_exit+0x263/0x730
[   56.846690][ T5573]  asm_sysvec_apic_timer_interrupt+0x1a/0x20
[   56.849089][ T5573] RIP: 0033:0x7f8d1fa77105
[   56.850843][ T5573] Code: 47 d6 4d 89 d7 4d 39 d0 73 7f 44 89 d8 83 e0 02 89 85 f4 fe ff ff 74 3e 4c 89 f9 31 c0 4c 89 c7 4c 29 c1 83 bd f4 fe ff ff 00 <f3> aa 75 5b 48 8b 35 88 79 02 00 44 89 da 44 89 9d f4 fe ff ff 48
[   56.858101][ T5573] RSP: 002b:00007ffd8bdfc140 EFLAGS: 00010202
[   56.860513][ T5573] RAX: 0000000000000000 RBX: 00007ffd8bdfc1e8 RCX: 0000000000000f60
[   56.863461][ T5573] RDX: 0000000000000003 RSI: 0000000000001000 RDI: 00007f8d1f7ef0a0
[   56.866393][ T5573] RBP: 00007ffd8bdfc510 R08: 00007f8d1f7ef0a0 R09: 000000000000b000
[   56.869374][ T5573] R10: 00007f8d1f7f0000 R11: 0000000000000003 R12: 00007f8d1fa66a00
[   56.872444][ T5573] R13: 00007ffd8bdfc598 R14: 00007f8d1f7f1888 R15: 00007f8d1f7f0000
[   56.875486][ T5573]  </TASK>
[   56.877386][ T5573] Kernel Offset: disabled
[   56.879051][ T5573] Rebooting in 86400 seconds..
