veth1_macvtap: left promiscuous mode
veth0_macvtap: left promiscuous mode
veth1_vlan: left promiscuous mode
veth0_vlan: left promiscuous mode
=====================================================
BUG: KMSAN: uninit-value in ref_tracker_free+0x5ca/0xec0 lib/ref_tracker.c:228
 ref_tracker_free+0x5ca/0xec0 lib/ref_tracker.c:228
 netdev_tracker_free include/linux/netdevice.h:4295 [inline]
 netdev_put include/linux/netdevice.h:4312 [inline]
 neigh_parms_release+0x212/0x3d0 net/core/neighbour.c:1711
 addrconf_ifdown+0x2f4a/0x3240 net/ipv6/addrconf.c:4003
 addrconf_notify+0x18f/0x1c40 net/ipv6/addrconf.c:3772
 notifier_call_chain kernel/notifier.c:85 [inline]
 raw_notifier_call_chain+0xe8/0x440 kernel/notifier.c:453
 call_netdevice_notifiers_info+0x1be/0x2b0 net/core/dev.c:2141
 call_netdevice_notifiers_extack net/core/dev.c:2179 [inline]
 call_netdevice_notifiers net/core/dev.c:2193 [inline]
 unregister_netdevice_many_notify+0x1fbf/0x3e30 net/core/dev.c:11809
 unregister_netdevice_many net/core/dev.c:11875 [inline]
 default_device_exit_batch+0x14cb/0x1590 net/core/dev.c:12360
 ops_exit_list net/core/net_namespace.c:177 [inline]
 cleanup_net+0x1113/0x1d20 net/core/net_namespace.c:652
 process_one_work kernel/workqueue.c:3236 [inline]
 process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3317
 worker_thread+0xea7/0x14f0 kernel/workqueue.c:3398
 kthread+0x6b9/0xef0 kernel/kthread.c:464
 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244

Uninit was created at:
 __alloc_frozen_pages_noprof+0x9a7/0xe00 mm/page_alloc.c:4762
 alloc_pages_mpol+0x4cd/0x890 mm/mempolicy.c:2270
 alloc_frozen_pages_noprof+0x1bf/0x1e0 mm/mempolicy.c:2341
 alloc_slab_page mm/slub.c:2423 [inline]
 allocate_slab+0x23a/0x1110 mm/slub.c:2587
 new_slab mm/slub.c:2640 [inline]
 ___slab_alloc+0x1287/0x3540 mm/slub.c:3826
 __slab_alloc mm/slub.c:3916 [inline]
 __slab_alloc_node mm/slub.c:3991 [inline]
 slab_alloc_node mm/slub.c:4152 [inline]
 __do_kmalloc_node mm/slub.c:4293 [inline]
 __kmalloc_noprof+0xa59/0x1230 mm/slub.c:4306
 kmalloc_noprof include/linux/slab.h:905 [inline]
 io_cache_alloc io_uring/alloc_cache.h:37 [inline]
 io_uring_alloc_async_data io_uring/io_uring.h:232 [inline]
 io_rw_alloc_async io_uring/rw.c:224 [inline]
 io_prep_rw_setup io_uring/rw.c:240 [inline]
 io_prep_rw+0x9f4/0x1300 io_uring/rw.c:319
 io_prep_rwv+0xb3/0x510 io_uring/rw.c:354
 io_prep_writev+0x3a/0x50 io_uring/rw.c:374
 io_init_req io_uring/io_uring.c:2115 [inline]
 io_submit_sqe io_uring/io_uring.c:2162 [inline]
 io_submit_sqes+0x1082/0x2f80 io_uring/io_uring.c:2317
 __do_sys_io_uring_enter io_uring/io_uring.c:3368 [inline]
 __se_sys_io_uring_enter+0x41d/0x4da0 io_uring/io_uring.c:3303
 __x64_sys_io_uring_enter+0x11f/0x1a0 io_uring/io_uring.c:3303
 x64_sys_call+0xce5/0x3c30 arch/x86/include/generated/asm/syscalls_64.h:427
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 0 UID: 0 PID: 3860 Comm: kworker/u8:16 Not tainted 6.13.0-syzkaller-08997-gf34b580514c9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: netns cleanup_net
=====================================================