last executing test programs:

kernel console output (not intermixed with test programs):

Warning: Permanently added '[localhost]:39969' (ED25519) to the list of known hosts.
syzkaller login: [   56.502954][ T5773] cgroup: Unknown subsys name 'net'
[   56.621217][ T5773] cgroup: Unknown subsys name 'cpuset'
[   56.624893][ T5773] cgroup: Unknown subsys name 'rlimit'
[   56.750647][ T5799] 
[   56.751482][ T5799] ================================================
[   56.753346][ T5799] WARNING: lock held when returning to user space!
[   56.755239][ T5799] syzkaller #0 Not tainted
[   56.756613][ T5799] ------------------------------------------------
[   56.758473][ T5799] dhcpcd/5799 is leaving the kernel with locks still held!
[   56.760577][ T5799] 1 lock held by dhcpcd/5799:
[   56.761916][ T5799]  #0: ffffffff8e75e620 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240
[   56.764763][ T5799] ------------[ cut here ]------------
[   56.766352][ T5799] Voluntary context switch within RCU read-side critical section!
[   56.766358][ T5799] WARNING: kernel/rcu/tree_plugin.h:332 at rcu_note_context_switch+0xcac/0xf40, CPU#1: dhcpcd/5799
[   56.771532][ T5799] Modules linked in:
[   56.772643][ T5799] CPU: 1 UID: 0 PID: 5799 Comm: dhcpcd Not tainted syzkaller #0 PREEMPT(full) 
[   56.775221][ T5799] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[   56.778214][ T5799] RIP: 0010:rcu_note_context_switch+0xcac/0xf40
[   56.779959][ T5799] Code: 00 41 c6 45 00 00 48 8b 3d 51 39 66 0e 48 81 c4 b8 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 7b 60 ff ff 48 8d 3d 44 18 6a 0e <67> 48 0f b9 3a e9 1b f4 ff ff 90 0f 0b 90 45 84 e4 0f 84 ea f3 ff
[   56.785476][ T5799] RSP: 0000:ffffc9000612fbb0 EFLAGS: 00010002
[   56.787179][ T5799] RAX: 0000000000000000 RBX: ffff88816ac8d7c0 RCX: 0000000080000002
[   56.789400][ T5799] RDX: 0000000000000000 RSI: ffffffff8c27f8e0 RDI: ffffffff90157400
[   56.791628][ T5799] RBP: dffffc0000000000 R08: ffffffff9011e7b7 R09: 1ffffffff2023cf6
[   56.793809][ T5799] R10: dffffc0000000000 R11: fffffbfff2023cf7 R12: 0000000000000000
[   56.796021][ T5799] R13: 0000000000000000 R14: ffff88823c63bd40 R15: ffff88816ac8dc84
[   56.798265][ T5799] FS:  00007f760087a740(0000) GS:ffff8882a9462000(0000) knlGS:0000000000000000
[   56.800757][ T5799] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   56.802851][ T5799] CR2: 0000557357bc77e8 CR3: 0000000171cda000 CR4: 00000000000006f0
[   56.805597][ T5799] Call Trace:
[   56.806566][ T5799]  <TASK>
[   56.807450][ T5799]  ? __schedule+0x15f3/0x52d0
[   56.808777][ T5799]  ? kvm_sched_clock_read+0x11/0x20
[   56.810238][ T5799]  ? rcu_is_watching+0x15/0xb0
[   56.811628][ T5799]  __schedule+0x304/0x52d0
[   56.812899][ T5799]  ? lock_release+0x4b/0x3d0
[   56.814480][ T5799]  ? __pfx___schedule+0x10/0x10
[   56.815963][ T5799]  ? wakeup_preempt_fair+0xad/0xa40
[   56.817426][ T5799]  ? rcu_is_watching+0x15/0xb0
[   56.818748][ T5799]  ? trace_irq_enable+0x3b/0x150
[   56.820118][ T5799]  ? __pfx___schedule+0x10/0x10
[   56.821473][ T5799]  ? trace_irq_disable+0x3b/0x150
[   56.822872][ T5799]  schedule+0x164/0x360
[   56.824109][ T5799]  irqentry_exit+0x155/0x620
[   56.825376][ T5799]  asm_sysvec_call_function_single+0x1a/0x20
[   56.827025][ T5799] RIP: 0033:0x55734e1fa5ee
[   56.828259][ T5799] Code: 47 10 00 00 00 00 48 c7 47 60 00 00 00 00 48 c7 47 68 00 00 00 00 48 8b 3b 48 85 ff 74 40 48 8b 07 48 8b 57 08 48 85 c0 74 06 <48> 89 50 08 eb 04 48 89 53 08 48 8b 57 08 48 89 02 e8 7c 9a ff ff
[   56.833540][ T5799] RSP: 002b:00007ffd810bed80 EFLAGS: 00010202
[   56.835229][ T5799] RAX: 0000557357bc77e0 RBX: 0000557357bc6dc0 RCX: 0000557357bd4fe0
[   56.837430][ T5799] RDX: 0000557357bc6dc0 RSI: 0000000000000000 RDI: 0000557357bd1280
[   56.839636][ T5799] RBP: 00007ffd810df1f8 R08: 0000000000000007 R09: fed5863560dea6bc
[   56.842042][ T5799] R10: 00007f7600a68088 R11: 0000000000000007 R12: 0000000000000000
[   56.844208][ T5799] R13: 0000557357bd51c0 R14: 00007ffd810df59c R15: 0000557357bd51f4
[   56.846379][ T5799]  </TASK>
[   56.847259][ T5799] Kernel panic - not syncing: kernel: panic_on_warn set ...
[   56.849289][ T5799] CPU: 1 UID: 0 PID: 5799 Comm: dhcpcd Not tainted syzkaller #0 PREEMPT(full) 
[   56.851723][ T5799] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
[   56.854451][ T5799] Call Trace:
[   56.855392][ T5799]  <TASK>
[   56.856226][ T5799]  vpanic+0x56c/0xa60
[   56.857333][ T5799]  ? __pfx__printk+0x10/0x10
[   56.858591][ T5799]  ? __pfx_vpanic+0x10/0x10
[   56.859877][ T5799]  ? is_bpf_text_address+0x292/0x2b0
[   56.861383][ T5799]  ? is_bpf_text_address+0x26/0x2b0
[   56.862808][ T5799]  panic+0xc5/0xd0
[   56.863855][ T5799]  ? __pfx_panic+0x10/0x10
[   56.865112][ T5799]  __warn+0x315/0x4f0
[   56.866242][ T5799]  ? rcu_note_context_switch+0xcac/0xf40
[   56.868008][ T5799]  ? rcu_note_context_switch+0xcac/0xf40
[   56.869759][ T5799]  __report_bug+0x29a/0x540
[   56.871136][ T5799]  ? rcu_note_context_switch+0xcac/0xf40
[   56.872655][ T5799]  ? __pfx___report_bug+0x10/0x10
[   56.874036][ T5799]  ? kvm_sched_clock_read+0x11/0x20
[   56.875497][ T5799]  ? sched_clock_cpu+0x74/0x440
[   56.876827][ T5799]  report_bug_entry+0x19a/0x290
[   56.878175][ T5799]  ? rcu_note_context_switch+0xcac/0xf40
[   56.879719][ T5799]  ? rcu_note_context_switch+0xcb1/0xf40
[   56.881284][ T5799]  handle_bug+0xce/0x200
[   56.882446][ T5799]  exc_invalid_op+0x1a/0x50
[   56.883703][ T5799]  asm_exc_invalid_op+0x1a/0x20
[   56.885051][ T5799] RIP: 0010:rcu_note_context_switch+0xcac/0xf40
[   56.886760][ T5799] Code: 00 41 c6 45 00 00 48 8b 3d 51 39 66 0e 48 81 c4 b8 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 7b 60 ff ff 48 8d 3d 44 18 6a 0e <67> 48 0f b9 3a e9 1b f4 ff ff 90 0f 0b 90 45 84 e4 0f 84 ea f3 ff
[   56.892052][ T5799] RSP: 0000:ffffc9000612fbb0 EFLAGS: 00010002
[   56.893746][ T5799] RAX: 0000000000000000 RBX: ffff88816ac8d7c0 RCX: 0000000080000002
[   56.895884][ T5799] RDX: 0000000000000000 RSI: ffffffff8c27f8e0 RDI: ffffffff90157400
[   56.898042][ T5799] RBP: dffffc0000000000 R08: ffffffff9011e7b7 R09: 1ffffffff2023cf6
[   56.900199][ T5799] R10: dffffc0000000000 R11: fffffbfff2023cf7 R12: 0000000000000000
[   56.902363][ T5799] R13: 0000000000000000 R14: ffff88823c63bd40 R15: ffff88816ac8dc84
[   56.904565][ T5799]  ? __schedule+0x15f3/0x52d0
[   56.905866][ T5799]  ? kvm_sched_clock_read+0x11/0x20
[   56.907416][ T5799]  ? rcu_is_watching+0x15/0xb0
[   56.908731][ T5799]  __schedule+0x304/0x52d0
[   56.909951][ T5799]  ? lock_release+0x4b/0x3d0
[   56.911235][ T5799]  ? __pfx___schedule+0x10/0x10
[   56.912651][ T5799]  ? wakeup_preempt_fair+0xad/0xa40
[   56.914093][ T5799]  ? rcu_is_watching+0x15/0xb0
[   56.915418][ T5799]  ? trace_irq_enable+0x3b/0x150
[   56.916793][ T5799]  ? __pfx___schedule+0x10/0x10
[   56.918152][ T5799]  ? trace_irq_disable+0x3b/0x150
[   56.919531][ T5799]  schedule+0x164/0x360
[   56.920677][ T5799]  irqentry_exit+0x155/0x620
[   56.921967][ T5799]  asm_sysvec_call_function_single+0x1a/0x20
[   56.923618][ T5799] RIP: 0033:0x55734e1fa5ee
[   56.924866][ T5799] Code: 47 10 00 00 00 00 48 c7 47 60 00 00 00 00 48 c7 47 68 00 00 00 00 48 8b 3b 48 85 ff 74 40 48 8b 07 48 8b 57 08 48 85 c0 74 06 <48> 89 50 08 eb 04 48 89 53 08 48 8b 57 08 48 89 02 e8 7c 9a ff ff
[   56.930172][ T5799] RSP: 002b:00007ffd810bed80 EFLAGS: 00010202
[   56.931939][ T5799] RAX: 0000557357bc77e0 RBX: 0000557357bc6dc0 RCX: 0000557357bd4fe0
[   56.934440][ T5799] RDX: 0000557357bc6dc0 RSI: 0000000000000000 RDI: 0000557357bd1280
[   56.936772][ T5799] RBP: 00007ffd810df1f8 R08: 0000000000000007 R09: fed5863560dea6bc
[   56.938996][ T5799] R10: 00007f7600a68088 R11: 0000000000000007 R12: 0000000000000000
[   56.941324][ T5799] R13: 0000557357bd51c0 R14: 00007ffd810df59c R15: 0000557357bd51f4
[   56.943557][ T5799]  </TASK>
[   56.945043][ T5799] Kernel Offset: disabled
[   56.946527][ T5799] Rebooting in 86400 seconds..
