last executing test programs:
kernel console output (not intermixed with test programs):
[ 87.311251][ T1258] cfg80211: failed to load regulatory.db
Warning: Permanently added '10.128.0.17' (ED25519) to the list of known hosts.
[ 93.216205][ T5799] cgroup: Unknown subsys name 'net'
[ 93.477884][ T5799] cgroup: Unknown subsys name 'cpuset'
[ 93.531469][ T5799] cgroup: Unknown subsys name 'rlimit'
[ 93.535674][ T5800]
[ 93.535686][ T5800] ================================================
[ 93.535693][ T5800] WARNING: lock held when returning to user space!
[ 93.535702][ T5800] syzkaller #0 Not tainted
[ 93.535718][ T5800] ------------------------------------------------
[ 93.535725][ T5800] udevd/5800 is leaving the kernel with locks still held!
[ 93.535738][ T5800] 1 lock held by udevd/5800:
[ 93.535749][ T5800] #0: ffffffff8dfc80c0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x200
[ 93.535850][ T5800] ------------[ cut here ]------------
[ 93.535856][ T5800] Voluntary context switch within RCU read-side critical section!
[ 93.535862][ T5800] WARNING: kernel/rcu/tree_plugin.h:332 at rcu_note_context_switch+0xcac/0xf40, CPU#0: udevd/5800
[ 93.535889][ T5800] Modules linked in:
[ 93.535902][ T5800] CPU: 0 UID: 0 PID: 5800 Comm: udevd Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 93.535922][ T5800] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 93.535932][ T5800] RIP: 0010:rcu_note_context_switch+0xcac/0xf40
[ 93.535950][ T5800] Code: 00 41 c6 45 00 00 48 8b 3d 21 24 e1 0d 48 81 c4 b8 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 bb 5f ff ff 48 8d 3d 24 e7 e4 0d <67> 48 0f b9 3a e9 1b f4 ff ff 90 0f 0b 90 45 84 e4 0f 84 ea f3 ff
[ 93.535963][ T5800] RSP: 0000:ffffc90004477b90 EFLAGS: 00010002
[ 93.535977][ T5800] RAX: 0000000000000000 RBX: ffff888039ac9ec0 RCX: 0000000000000002
[ 93.535988][ T5800] RDX: 0000000000000000 RSI: ffffffff8ba73c40 RDI: ffffffff8f8f4250
[ 93.536000][ T5800] RBP: dffffc0000000000 R08: ffffffff8f8bd1f7 R09: 1ffffffff1f17a3e
[ 93.536012][ T5800] R10: dffffc0000000000 R11: fffffbfff1f17a3f R12: 0000000000000000
[ 93.536023][ T5800] R13: dffffc0000000000 R14: ffff8880b883c800 R15: ffff888039aca384
[ 93.536036][ T5800] FS: 00007f74fc12d880(0000) GS:ffff8881260fb000(0000) knlGS:0000000000000000
[ 93.536051][ T5800] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 93.536062][ T5800] CR2: 000055de63bc0d08 CR3: 0000000031232000 CR4: 00000000003526f0
[ 93.536078][ T5800] Call Trace:
[ 93.536085][ T5800]
[ 93.536092][ T5800] ? __pfx___resched_curr+0x10/0x10
[ 93.536111][ T5800] ? rcu_is_watching+0x15/0xb0
[ 93.536133][ T5800] __schedule+0x291/0x54c0
[ 93.536153][ T5800] ? lock_release+0x4b/0x3c0
[ 93.536180][ T5800] ? __hrtimer_run_queues+0xad6/0xb10
[ 93.536203][ T5800] ? ktime_get_update_offsets_now+0x5d/0x3e0
[ 93.536224][ T5800] ? seqcount_lockdep_reader_access+0xd4/0x100
[ 93.536240][ T5800] ? ktime_get_update_offsets_now+0x3bb/0x3e0
[ 93.536259][ T5800] ? __hrtimer_get_next_event+0x51f/0x600
[ 93.536282][ T5800] ? kvm_sched_clock_read+0x11/0x20
[ 93.536300][ T5800] ? __pfx___schedule+0x10/0x10
[ 93.536316][ T5800] ? sched_clock_cpu+0x74/0x440
[ 93.536340][ T5800] ? preempt_schedule_notrace_thunk+0x16/0x30
[ 93.536364][ T5800] schedule+0x164/0x360
[ 93.536382][ T5800] irqentry_exit+0x263/0x730
[ 93.536403][ T5800] asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 93.536421][ T5800] RIP: 0033:0x7f74fc8d1a9a
[ 93.536435][ T5800] Code: 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 53 48 85 ff 74 2f 48 8b 47 08 48 39 c7 74 21 48 8b 1f 48 39 df 74 19 48 89 18 <48> 89 43 08 e8 8d d9 ff ff 48 89 d8 5b c3 0f 1f 84 00 00 00 00 00
[ 93.536448][ T5800] RSP: 002b:00007ffceb76a200 EFLAGS: 00010283
[ 93.536461][ T5800] RAX: 000055de63bbd0b0 RBX: 000055de63bc0d00 RCX: 0000000000000000
[ 93.536471][ T5800] RDX: 000055de63bbf070 RSI: 000055de63bc5ae0 RDI: 000055de63bbcf10
[ 93.536482][ T5800] RBP: 000055de63bbcf10 R08: 000055de63bc5af0 R09: 0000000000000003
[ 93.536493][ T5800] R10: 0000000000000000 R11: 0000000000000297 R12: 000055de3e623588
[ 93.536504][ T5800] R13: 00007ffceb76a2b0 R14: 0000000000000000 R15: 0000000000000000
[ 93.536519][ T5800]
[ 93.536528][ T5800] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 93.536540][ T5800] CPU: 0 UID: 0 PID: 5800 Comm: udevd Not tainted syzkaller #0 PREEMPT_{RT,(full)}
[ 93.536558][ T5800] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 93.536567][ T5800] Call Trace:
[ 93.536573][ T5800]
[ 93.536578][ T5800] vpanic+0x56c/0xa60
[ 93.536595][ T5800] ? __pfx__printk+0x10/0x10
[ 93.536614][ T5800] ? __pfx_vpanic+0x10/0x10
[ 93.536628][ T5800] ? is_bpf_text_address+0x292/0x2b0
[ 93.536647][ T5800] ? is_bpf_text_address+0x26/0x2b0
[ 93.536667][ T5800] panic+0xc5/0xd0
[ 93.536682][ T5800] ? __pfx_panic+0x10/0x10
[ 93.536702][ T5800] __warn+0x315/0x4c0
[ 93.536717][ T5800] ? rcu_note_context_switch+0xcac/0xf40
[ 93.536734][ T5800] ? rcu_note_context_switch+0xcac/0xf40
[ 93.536750][ T5800] __report_bug+0x29a/0x540
[ 93.536771][ T5800] ? rcu_note_context_switch+0xcac/0xf40
[ 93.536787][ T5800] ? __pfx___report_bug+0x10/0x10
[ 93.536807][ T5800] ? __asan_memcpy+0x40/0x70
[ 93.536831][ T5800] report_bug_entry+0x19a/0x290
[ 93.536850][ T5800] ? rcu_note_context_switch+0xcac/0xf40
[ 93.536865][ T5800] ? rcu_note_context_switch+0xcb1/0xf40
[ 93.536881][ T5800] handle_bug+0xce/0x200
[ 93.536903][ T5800] exc_invalid_op+0x1a/0x50
[ 93.536926][ T5800] asm_exc_invalid_op+0x1a/0x20
[ 93.536941][ T5800] RIP: 0010:rcu_note_context_switch+0xcac/0xf40
[ 93.536958][ T5800] Code: 00 41 c6 45 00 00 48 8b 3d 21 24 e1 0d 48 81 c4 b8 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d e9 bb 5f ff ff 48 8d 3d 24 e7 e4 0d <67> 48 0f b9 3a e9 1b f4 ff ff 90 0f 0b 90 45 84 e4 0f 84 ea f3 ff
[ 93.536972][ T5800] RSP: 0000:ffffc90004477b90 EFLAGS: 00010002
[ 93.536985][ T5800] RAX: 0000000000000000 RBX: ffff888039ac9ec0 RCX: 0000000000000002
[ 93.536996][ T5800] RDX: 0000000000000000 RSI: ffffffff8ba73c40 RDI: ffffffff8f8f4250
[ 93.537007][ T5800] RBP: dffffc0000000000 R08: ffffffff8f8bd1f7 R09: 1ffffffff1f17a3e
[ 93.537019][ T5800] R10: dffffc0000000000 R11: fffffbfff1f17a3f R12: 0000000000000000
[ 93.537030][ T5800] R13: dffffc0000000000 R14: ffff8880b883c800 R15: ffff888039aca384
[ 93.537049][ T5800] ? __pfx___resched_curr+0x10/0x10
[ 93.537067][ T5800] ? rcu_is_watching+0x15/0xb0
[ 93.537088][ T5800] __schedule+0x291/0x54c0
[ 93.537107][ T5800] ? lock_release+0x4b/0x3c0
[ 93.537125][ T5800] ? __hrtimer_run_queues+0xad6/0xb10
[ 93.537148][ T5800] ? ktime_get_update_offsets_now+0x5d/0x3e0
[ 93.537175][ T5800] ? seqcount_lockdep_reader_access+0xd4/0x100
[ 93.537191][ T5800] ? ktime_get_update_offsets_now+0x3bb/0x3e0
[ 93.537210][ T5800] ? __hrtimer_get_next_event+0x51f/0x600
[ 93.537234][ T5800] ? kvm_sched_clock_read+0x11/0x20
[ 93.537253][ T5800] ? __pfx___schedule+0x10/0x10
[ 93.537269][ T5800] ? sched_clock_cpu+0x74/0x440
[ 93.537292][ T5800] ? preempt_schedule_notrace_thunk+0x16/0x30
[ 93.537316][ T5800] schedule+0x164/0x360
[ 93.537334][ T5800] irqentry_exit+0x263/0x730
[ 93.537355][ T5800] asm_sysvec_apic_timer_interrupt+0x1a/0x20
[ 93.537372][ T5800] RIP: 0033:0x7f74fc8d1a9a
[ 93.537385][ T5800] Code: 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 53 48 85 ff 74 2f 48 8b 47 08 48 39 c7 74 21 48 8b 1f 48 39 df 74 19 48 89 18 <48> 89 43 08 e8 8d d9 ff ff 48 89 d8 5b c3 0f 1f 84 00 00 00 00 00
[ 93.537398][ T5800] RSP: 002b:00007ffceb76a200 EFLAGS: 00010283
[ 93.537411][ T5800] RAX: 000055de63bbd0b0 RBX: 000055de63bc0d00 RCX: 0000000000000000
[ 93.537422][ T5800] RDX: 000055de63bbf070 RSI: 000055de63bc5ae0 RDI: 000055de63bbcf10
[ 93.537433][ T5800] RBP: 000055de63bbcf10 R08: 000055de63bc5af0 R09: 0000000000000003
[ 93.537444][ T5800] R10: 0000000000000000 R11: 0000000000000297 R12: 000055de3e623588
[ 93.537454][ T5800] R13: 00007ffceb76a2b0 R14: 0000000000000000 R15: 0000000000000000
[ 93.537470][ T5800]
[ 93.538039][ T5800] Kernel Offset: disabled