===================================================== 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: 1 PID: 19275 Comm: syz-executor.4 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 __ia32_sys_write+0x4a/0x70 fs/read_write.c:667 do_syscall_32_irqs_on arch/x86/entry/common.c:80 [inline] __do_fast_syscall_32+0x102/0x160 arch/x86/entry/common.c:139 do_fast_syscall_32+0x6a/0xc0 arch/x86/entry/common.c:162 do_SYSENTER_32+0x73/0x90 arch/x86/entry/common.c:205 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7f3d549 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f55370cc EFLAGS: 00000296 ORIG_RAX: 0000000000000004 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000000 RDX: 00000000000000e4 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 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 =====================================================