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BUG: KMSAN: uninit-value in __radix_tree_lookup lib/radix-tree.c:757 [inline]
BUG: KMSAN: uninit-value in radix_tree_lookup+0x409/0x420 lib/radix-tree.c:817
CPU: 0 PID: 11005 Comm: syz-executor.3 Not tainted 5.10.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x21c/0x280 lib/dump_stack.c:118
 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:118
 __msan_warning+0x5f/0xa0 mm/kmsan/kmsan_instr.c:197
 __radix_tree_lookup lib/radix-tree.c:757 [inline]
 radix_tree_lookup+0x409/0x420 lib/radix-tree.c:817
 qrtr_tx_resume net/qrtr/qrtr.c:224 [inline]
 qrtr_endpoint_post+0x1172/0x1740 net/qrtr/qrtr.c:498
 qrtr_tun_write_iter+0x216/0x370 net/qrtr/tun.c:92
 call_write_iter include/linux/fs.h:1903 [inline]
 new_sync_write fs/read_write.c:518 [inline]
 vfs_write+0x1087/0x1b10 fs/read_write.c:605
 ksys_write+0x2af/0x4d0 fs/read_write.c:658
 __do_sys_write fs/read_write.c:670 [inline]
 __se_sys_write+0x92/0xb0 fs/read_write.c:667
 __x64_sys_write+0x4a/0x70 fs/read_write.c:667
 do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45deb9
Code: 0d b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fb8c4e69c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000000000003a880 RCX: 000000000045deb9
RDX: 0000000000000010 RSI: 00000000200003c0 RDI: 0000000000000003
RBP: 000000000118bf60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c
R13: 000000000169fb7f R14: 00007fb8c4e6a9c0 R15: 000000000118bf2c

Uninit was created at:
 kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:121
 kmsan_alloc_page+0xd3/0x1f0 mm/kmsan/kmsan_shadow.c:274
 __alloc_pages_nodemask+0x84e/0xfb0 mm/page_alloc.c:4989
 __alloc_pages include/linux/gfp.h:511 [inline]
 __alloc_pages_node include/linux/gfp.h:524 [inline]
 alloc_pages_node include/linux/gfp.h:538 [inline]
 __page_frag_cache_refill mm/page_alloc.c:5065 [inline]
 page_frag_alloc+0x35b/0x890 mm/page_alloc.c:5095
 __netdev_alloc_skb+0xbee/0xc50 net/core/skbuff.c:456
 netdev_alloc_skb include/linux/skbuff.h:2826 [inline]
 dev_alloc_skb include/linux/skbuff.h:2839 [inline]
 __ieee80211_beacon_get+0x967/0x3450 net/mac80211/tx.c:4837
 ieee80211_beacon_get_tim+0x11d/0x830 net/mac80211/tx.c:4951
 ieee80211_beacon_get include/net/mac80211.h:4912 [inline]
 mac80211_hwsim_beacon_tx+0x1d3/0xd30 drivers/net/wireless/mac80211_hwsim.c:1729
 __iterate_interfaces+0x525/0x7e0 net/mac80211/util.c:792
 ieee80211_iterate_active_interfaces_atomic+0xbb/0xd0 net/mac80211/util.c:828
 mac80211_hwsim_beacon+0x11d/0x2e0 drivers/net/wireless/mac80211_hwsim.c:1782
 __run_hrtimer+0x48b/0xd20 kernel/time/hrtimer.c:1519
 __hrtimer_run_queues kernel/time/hrtimer.c:1583 [inline]
 hrtimer_run_softirq+0x3bf/0x690 kernel/time/hrtimer.c:1600
 __do_softirq+0x1a9/0x6fa kernel/softirq.c:298
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