===================================================== BUG: KMSAN: uninit-value in __radix_tree_lookup lib/radix-tree.c:758 [inline] BUG: KMSAN: uninit-value in radix_tree_lookup+0x409/0x420 lib/radix-tree.c:818 CPU: 0 PID: 11927 Comm: syz-executor.5 Not tainted 5.9.0-rc8-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:122 __msan_warning+0x55/0x90 mm/kmsan/kmsan_instr.c:201 __radix_tree_lookup lib/radix-tree.c:758 [inline] radix_tree_lookup+0x409/0x420 lib/radix-tree.c:818 qrtr_tx_resume net/qrtr/qrtr.c:224 [inline] qrtr_endpoint_post+0x1172/0x1700 net/qrtr/qrtr.c:498 qrtr_tun_write_iter+0x216/0x370 net/qrtr/tun.c:92 call_write_iter include/linux/fs.h:1882 [inline] new_sync_write fs/read_write.c:503 [inline] vfs_write+0xfba/0x1870 fs/read_write.c:586 ksys_write+0x2af/0x4d0 fs/read_write.c:639 __do_sys_write fs/read_write.c:651 [inline] __se_sys_write+0x92/0xb0 fs/read_write.c:648 __ia32_sys_write+0x4a/0x70 fs/read_write.c:648 do_syscall_32_irqs_on arch/x86/entry/common.c:80 [inline] __do_fast_syscall_32+0x129/0x180 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: 0023:0xf7f8a549 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:00000000f55840cc 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:143 kmsan_alloc_page+0xce/0x1d0 mm/kmsan/kmsan_shadow.c:278 __alloc_pages_nodemask+0x84e/0x1040 mm/page_alloc.c:4938 __alloc_pages include/linux/gfp.h:509 [inline] __alloc_pages_node include/linux/gfp.h:522 [inline] alloc_pages_node include/linux/gfp.h:536 [inline] __page_frag_cache_refill mm/page_alloc.c:5011 [inline] page_frag_alloc+0x35b/0x890 mm/page_alloc.c:5041 __netdev_alloc_skb+0xbee/0xc50 net/core/skbuff.c:456 __netdev_alloc_skb_ip_align include/linux/skbuff.h:2841 [inline] netdev_alloc_skb_ip_align include/linux/skbuff.h:2851 [inline] batadv_iv_ogm_aggregate_new net/batman-adv/bat_iv_ogm.c:558 [inline] batadv_iv_ogm_queue_add+0x13ba/0x1c60 net/batman-adv/bat_iv_ogm.c:670 batadv_iv_ogm_schedule_buff net/batman-adv/bat_iv_ogm.c:849 [inline] batadv_iv_ogm_schedule+0x127a/0x1640 net/batman-adv/bat_iv_ogm.c:869 batadv_iv_send_outstanding_bat_ogm_packet+0xd7b/0xf00 net/batman-adv/bat_iv_ogm.c:1723 process_one_work+0x1224/0x20a0 kernel/workqueue.c:2269 worker_thread+0x10cc/0x2740 kernel/workqueue.c:2415 kthread+0x51c/0x560 kernel/kthread.c:293 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294 =====================================================