==================================================================
BUG: KMSAN: uninit-value in batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:317 [inline]
BUG: KMSAN: uninit-value in batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:383 [inline]
BUG: KMSAN: uninit-value in batadv_iv_send_outstanding_bat_ogm_packet+0x6cd/0xcc0 net/batman-adv/bat_iv_ogm.c:1657
CPU: 0 PID: 1464 Comm: kworker/u4:17 Not tainted 5.3.0-rc3+ #17
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x191/0x1f0 lib/dump_stack.c:113
 kmsan_report+0x162/0x2d0 mm/kmsan/kmsan_report.c:109
 __msan_warning+0x75/0xe0 mm/kmsan/kmsan_instr.c:294
 batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:317 [inline]
 batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:383 [inline]
 batadv_iv_send_outstanding_bat_ogm_packet+0x6cd/0xcc0 net/batman-adv/bat_iv_ogm.c:1657
 process_one_work+0x1572/0x1ef0 kernel/workqueue.c:2269
 worker_thread+0x111b/0x2460 kernel/workqueue.c:2415
 kthread+0x4b5/0x4f0 kernel/kthread.c:256
 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:355

Uninit was created at:
 kmsan_save_stack_with_flags+0x37/0x70 mm/kmsan/kmsan.c:187
 kmsan_internal_alloc_meta_for_pages+0x123/0x510 mm/kmsan/kmsan_hooks.c:114
 kmsan_alloc_page+0x7a/0xf0 mm/kmsan/kmsan_hooks.c:244
 __alloc_pages_nodemask+0x142d/0x5fa0 mm/page_alloc.c:4768
 __alloc_pages include/linux/gfp.h:475 [inline]
 __alloc_pages_node include/linux/gfp.h:488 [inline]
 alloc_pages_node include/linux/gfp.h:502 [inline]
 __page_frag_cache_refill mm/page_alloc.c:4843 [inline]
 page_frag_alloc+0x35b/0x890 mm/page_alloc.c:4873
 __napi_alloc_skb+0x195/0x980 net/core/skbuff.c:519
 napi_alloc_skb include/linux/skbuff.h:2808 [inline]
 page_to_skb+0x134/0x1150 drivers/net/virtio_net.c:384
 receive_mergeable drivers/net/virtio_net.c:924 [inline]
 receive_buf+0xe7b/0x8810 drivers/net/virtio_net.c:1033
 virtnet_receive drivers/net/virtio_net.c:1323 [inline]
 virtnet_poll+0x666/0x19d0 drivers/net/virtio_net.c:1428
 napi_poll net/core/dev.c:6347 [inline]
 net_rx_action+0x74b/0x1950 net/core/dev.c:6413
 __do_softirq+0x4a1/0x83a kernel/softirq.c:293
 invoke_softirq kernel/softirq.c:375 [inline]
 irq_exit+0x230/0x280 kernel/softirq.c:416
 exiting_irq arch/x86/include/asm/apic.h:537 [inline]
 do_IRQ+0x20d/0x3a0 arch/x86/kernel/irq.c:259
 ret_from_intr+0x0/0x33
 finish_lock_switch+0x2b/0x40 kernel/sched/core.c:3007
 finish_task_switch+0xfa/0x2d0 kernel/sched/core.c:3108
 context_switch kernel/sched/core.c:3261 [inline]
 __schedule+0x646/0x780 kernel/sched/core.c:3886
 schedule+0x19b/0x2d0 kernel/sched/core.c:3950
 freezable_schedule include/linux/freezer.h:172 [inline]
 do_nanosleep+0x29e/0x990 kernel/time/hrtimer.c:1679
 hrtimer_nanosleep kernel/time/hrtimer.c:1733 [inline]
 __do_sys_nanosleep kernel/time/hrtimer.c:1767 [inline]
 __se_sys_nanosleep+0x6e2/0x900 kernel/time/hrtimer.c:1754
 __x64_sys_nanosleep+0x3e/0x60 kernel/time/hrtimer.c:1754
 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x63/0xe7
==================================================================