last executing test programs:
kernel console output (not intermixed with test programs):
Warning: Permanently added '10.128.0.12' (ED25519) to the list of known hosts.
[ 50.542307][ T29] audit: type=1400 audit(1777810960.698:62): avc: denied { mounton } for pid=2957 comm="syz-executor" path="/syzcgroup/unified" dev="sda1" ino=2023 scontext=root:sysadm_r:sysadm_t tcontext=root:object_r:root_t tclass=dir permissive=1
[ 50.566970][ T29] audit: type=1400 audit(1777810960.718:63): avc: denied { mount } for pid=2957 comm="syz-executor" name="/" dev="cgroup2" ino=1 scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1
[ 50.582963][ T2957] cgroup: Unknown subsys name 'net'
[ 50.599152][ T29] audit: type=1400 audit(1777810960.758:64): avc: denied { unmount } for pid=2957 comm="syz-executor" scontext=root:sysadm_r:sysadm_t tcontext=system_u:object_r:cgroup_t tclass=filesystem permissive=1
[ 50.744219][ T2957] cgroup: Unknown subsys name 'cpuset'
[ 50.756122][ T2957] cgroup: Unknown subsys name 'rlimit'
[ 50.764678][ T2854]
[ 50.767124][ T2854] ================================================
[ 50.773664][ T2854] WARNING: lock held when returning to user space!
[ 50.780213][ T2854] syzkaller #0 Not tainted
[ 50.784666][ T2854] ------------------------------------------------
[ 50.791191][ T2854] udevd/2854 is leaving the kernel with locks still held!
[ 50.798355][ T2854] 1 lock held by udevd/2854:
[ 50.803005][ T2854] #0: ffffffff896ddaa0 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x2f/0x300
[ 50.814367][ T2854] ------------[ cut here ]------------
[ 50.819933][ T2854] Voluntary context switch within RCU read-side critical section!
[ 50.819954][ T2854] WARNING: kernel/rcu/tree_plugin.h:332 at rcu_note_context_switch+0x859/0x19c0, CPU#0: udevd/2854
[ 50.838603][ T2854] Modules linked in:
[ 50.842555][ T2854] CPU: 0 UID: 0 PID: 2854 Comm: udevd Not tainted syzkaller #0 PREEMPT(full)
[ 50.851437][ T2854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 50.861529][ T2854] RIP: 0010:rcu_note_context_switch+0x859/0x19c0
[ 50.867911][ T2854] Code: c1 ea 03 80 3c 02 00 0f 85 9b 0b 00 00 48 8b 53 28 b9 01 00 00 00 4c 89 ef e8 a3 cf fe ff e9 1d f9 ff ff 48 8d 3d 57 62 59 09 <67> 48 0f b9 3a e9 99 f8 ff ff 48 b8 00 00 00 00 00 fc ff df 48 8d
[ 50.887578][ T2854] RSP: 0000:ffffc9000161fd70 EFLAGS: 00010002
[ 50.893688][ T2854] RAX: 0000000000000001 RBX: ffff8881f563a540 RCX: ffffffff81984ca1
[ 50.901692][ T2854] RDX: 0000000000000000 RSI: ffffffff87b040e0 RDI: ffffffff8af22320
[ 50.909698][ T2854] RBP: ffff88811797bb80 R08: 0000000000000000 R09: fffffbfff15e133a
[ 50.917697][ T2854] R10: ffffffff8af099d7 R11: 0000000000000000 R12: 0000000000000000
[ 50.925706][ T2854] R13: ffff88811797bffc R14: ffffffff8cf90680 R15: ffffffff8af0a964
[ 50.933727][ T2854] FS: 00007f810195c880(0000) GS:ffff8882686a9000(0000) knlGS:0000000000000000
[ 50.942776][ T2854] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 50.949405][ T2854] CR2: 0000555578887528 CR3: 0000000117ac6000 CR4: 00000000003506f0
[ 50.957448][ T2854] Call Trace:
[ 50.960754][ T2854]
[ 50.963752][ T2854] ? __schedule+0x1b85/0x4840
[ 50.968510][ T2854] ? rcu_is_watching+0x12/0xc0
[ 50.973322][ T2854] __schedule+0x25e/0x4840
[ 50.977762][ T2854] ? trace_irq_enable.constprop.0+0x11e/0x160
[ 50.983869][ T2854] ? __pfx___schedule+0x10/0x10
[ 50.988763][ T2854] schedule+0xdd/0x390
[ 50.992879][ T2854] irqentry_exit+0x2f7/0x6c0
[ 50.997521][ T2854] asm_sysvec_reschedule_ipi+0x1a/0x20
[ 51.003013][ T2854] RIP: 0033:0x55e20bfc046c
[ 51.007476][ T2854] Code: 00 00 00 e8 d6 68 fd ff 48 83 c4 18 c3 b8 ea ff ff ff eb f4 66 2e 0f 1f 84 00 00 00 00 00 53 48 89 fb 8b 7f 0c e8 44 69 fd ff 43 0c ff ff ff ff 89 c2 31 c0 85 d2 78 05 5b c3 0f 1f 00 e8 bb
[ 51.027164][ T2854] RSP: 002b:00007fff7fa186f0 EFLAGS: 00010206
[ 51.033268][ T2854] RAX: 0000000000000000 RBX: 000055e20dd0f430 RCX: e7fa5d1188143200
[ 51.041275][ T2854] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000000c
[ 51.049268][ T2854] RBP: 000055e20da4f2c0 R08: 0000000000000000 R09: 0000000000000000
[ 51.057272][ T2854] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000b90
[ 51.065398][ T2854] R13: 000055e20dd10d70 R14: 000055e20dc97430 R15: 0000000000000000
[ 51.073451][ T2854]
[ 51.076504][ T2854] Kernel panic - not syncing: kernel: panic_on_warn set ...
[ 51.083812][ T2854] CPU: 0 UID: 0 PID: 2854 Comm: udevd Not tainted syzkaller #0 PREEMPT(full)
[ 51.092689][ T2854] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
[ 51.102772][ T2854] Call Trace:
[ 51.106078][ T2854]
[ 51.109051][ T2854] dump_stack_lvl+0x100/0x190
[ 51.113769][ T2854] vpanic+0x552/0x970
[ 51.117798][ T2854] ? __pfx_vpanic+0x10/0x10
[ 51.122342][ T2854] ? lock_release+0x245/0x310
[ 51.127096][ T2854] panic+0xd1/0xe0
[ 51.131120][ T2854] ? __pfx_panic+0x10/0x10
[ 51.135591][ T2854] ? check_panic_on_warn+0x1f/0x90
[ 51.140745][ T2854] check_panic_on_warn.cold+0x19/0x34
[ 51.146158][ T2854] ? rcu_note_context_switch+0x859/0x19c0
[ 51.151961][ T2854] __warn.cold+0x191/0x328
[ 51.156423][ T2854] __report_bug+0x296/0x3d0
[ 51.160982][ T2854] ? rcu_note_context_switch+0x859/0x19c0
[ 51.166741][ T2854] ? __pfx___report_bug+0x10/0x10
[ 51.171812][ T2854] ? pick_next_task_fair+0x1325/0x24d0
[ 51.177315][ T2854] ? trace_rcu_utilization+0x31/0x240
[ 51.182736][ T2854] ? __pfx_migrate_disable_switch.isra.0+0x10/0x10
[ 51.189278][ T2854] report_bug_entry+0xe1/0x290
[ 51.194097][ T2854] ? rcu_note_context_switch+0x859/0x19c0
[ 51.199853][ T2854] handle_bug+0x1cd/0x2a0
[ 51.204238][ T2854] exc_invalid_op+0x17/0x50
[ 51.208841][ T2854] asm_exc_invalid_op+0x1a/0x20
[ 51.213753][ T2854] RIP: 0010:rcu_note_context_switch+0x859/0x19c0
[ 51.220114][ T2854] Code: c1 ea 03 80 3c 02 00 0f 85 9b 0b 00 00 48 8b 53 28 b9 01 00 00 00 4c 89 ef e8 a3 cf fe ff e9 1d f9 ff ff 48 8d 3d 57 62 59 09 <67> 48 0f b9 3a e9 99 f8 ff ff 48 b8 00 00 00 00 00 fc ff df 48 8d
[ 51.239762][ T2854] RSP: 0000:ffffc9000161fd70 EFLAGS: 00010002
[ 51.245860][ T2854] RAX: 0000000000000001 RBX: ffff8881f563a540 RCX: ffffffff81984ca1
[ 51.253882][ T2854] RDX: 0000000000000000 RSI: ffffffff87b040e0 RDI: ffffffff8af22320
[ 51.261893][ T2854] RBP: ffff88811797bb80 R08: 0000000000000000 R09: fffffbfff15e133a
[ 51.269932][ T2854] R10: ffffffff8af099d7 R11: 0000000000000000 R12: 0000000000000000
[ 51.278168][ T2854] R13: ffff88811797bffc R14: ffffffff8cf90680 R15: ffffffff8af0a964
[ 51.286182][ T2854] ? trace_rcu_utilization+0x31/0x240
[ 51.291631][ T2854] ? __schedule+0x1b85/0x4840
[ 51.296349][ T2854] ? rcu_is_watching+0x12/0xc0
[ 51.301142][ T2854] __schedule+0x25e/0x4840
[ 51.305587][ T2854] ? trace_irq_enable.constprop.0+0x11e/0x160
[ 51.311707][ T2854] ? __pfx___schedule+0x10/0x10
[ 51.316611][ T2854] schedule+0xdd/0x390
[ 51.320718][ T2854] irqentry_exit+0x2f7/0x6c0
[ 51.325350][ T2854] asm_sysvec_reschedule_ipi+0x1a/0x20
[ 51.330847][ T2854] RIP: 0033:0x55e20bfc046c
[ 51.335291][ T2854] Code: 00 00 00 e8 d6 68 fd ff 48 83 c4 18 c3 b8 ea ff ff ff eb f4 66 2e 0f 1f 84 00 00 00 00 00 53 48 89 fb 8b 7f 0c e8 44 69 fd ff 43 0c ff ff ff ff 89 c2 31 c0 85 d2 78 05 5b c3 0f 1f 00 e8 bb
[ 51.354933][ T2854] RSP: 002b:00007fff7fa186f0 EFLAGS: 00010206
[ 51.361031][ T2854] RAX: 0000000000000000 RBX: 000055e20dd0f430 RCX: e7fa5d1188143200
[ 51.369112][ T2854] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 000000000000000c
[ 51.377115][ T2854] RBP: 000055e20da4f2c0 R08: 0000000000000000 R09: 0000000000000000
[ 51.385116][ T2854] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000b90
[ 51.393150][ T2854] R13: 000055e20dd10d70 R14: 000055e20dc97430 R15: 0000000000000000
[ 51.401501][ T2854]
[ 51.405204][ T2854] Kernel Offset: disabled
[ 51.409568][ T2854] Rebooting in 86400 seconds..