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verifier bug: error during ctx access conversion (0)(1)
WARNING: CPU: 1 PID: 8400 at kernel/bpf/verifier.c:21452 convert_ctx_accesses kernel/bpf/verifier.c:21452 [inline]
WARNING: CPU: 1 PID: 8400 at kernel/bpf/verifier.c:21452 bpf_check+0x1466c/0x15d8c kernel/bpf/verifier.c:24743
Modules linked in:
CPU: 1 UID: 0 PID: 8400 Comm: syz.1.498 Not tainted syzkaller #0 PREEMPT 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 63400005 (nZCv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--)
pc : convert_ctx_accesses kernel/bpf/verifier.c:21452 [inline]
pc : bpf_check+0x1466c/0x15d8c kernel/bpf/verifier.c:24743
lr : convert_ctx_accesses kernel/bpf/verifier.c:21452 [inline]
lr : bpf_check+0x1466c/0x15d8c kernel/bpf/verifier.c:24743
sp : ffff80009dcd7480
x29: ffff80009dcd7980 x28: dfff800000000000 x27: ffff80009d7e7058
x26: ffff0000d5c08000 x25: 0000000000000000 x24: ffff0000d5c08670
x23: 0000000000000061 x22: ffff80009d7e705a x21: 1fffe0001ab81001
x20: 0000000000000000 x19: ffff800092ef2000 x18: 1fffe00033776488
x17: ffff80008f85e000 x16: ffff80008b065bd0 x15: 0000000000000001
x14: 1fffe00033778f08 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000080000 x10: 0000000000000003 x9 : f6ec99a223470700
x8 : f6ec99a223470700 x7 : ffff800080493890 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000010
x2 : ffff80009dcd7040 x1 : ffff80008b6b38c0 x0 : 0000000000000001
Call trace:
 convert_ctx_accesses kernel/bpf/verifier.c:21452 [inline] (P)
 bpf_check+0x1466c/0x15d8c kernel/bpf/verifier.c:24743 (P)
 bpf_prog_load+0xec8/0x13fc kernel/bpf/syscall.c:2979
 __sys_bpf+0x450/0x628 kernel/bpf/syscall.c:6029
 __do_sys_bpf kernel/bpf/syscall.c:6139 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:6137 [inline]
 __arm64_sys_bpf+0x80/0x98 kernel/bpf/syscall.c:6137
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x254 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x5c/0x254 arch/arm64/kernel/entry-common.c:744
 el0t_64_sync_handler+0x84/0x12c arch/arm64/kernel/entry-common.c:763
 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:596
irq event stamp: 1886
hardirqs last  enabled at (1885): [<ffff800080493924>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1531 [inline]
hardirqs last  enabled at (1885): [<ffff800080493924>] finish_lock_switch+0xb0/0x1c0 kernel/sched/core.c:5105
hardirqs last disabled at (1886): [<ffff80008b05ee64>] el1_brk64+0x20/0x54 arch/arm64/kernel/entry-common.c:434
softirqs last  enabled at (1434): [<ffff8000803db160>] softirq_handle_end kernel/softirq.c:425 [inline]
softirqs last  enabled at (1434): [<ffff8000803db160>] handle_softirqs+0xaf8/0xc88 kernel/softirq.c:607
softirqs last disabled at (1393): [<ffff800080022028>] __do_softirq+0x14/0x20 kernel/softirq.c:613
---[ end trace 0000000000000000 ]---
UDC core: USB Raw Gadget: couldn't find an available UDC or it's busy
misc raw-gadget: fail, usb_gadget_register_driver returned -16