__netif_receive_skb_one_core net/core/dev.c:5185 [inline] __netif_receive_skb net/core/dev.c:5301 [inline] process_backlog+0x936/0x1410 net/core/dev.c:6133 napi_poll net/core/dev.c:6571 [inline] net_rx_action+0x786/0x1aa0 net/core/dev.c:6639 __do_softirq+0x311/0x83d kernel/softirq.c:293 Uninit was created at: ===================================================== BUG: KMSAN: uninit-value in is_kernel include/linux/kallsyms.h:41 [inline] BUG: KMSAN: uninit-value in is_ksym_addr include/linux/kallsyms.h:49 [inline] BUG: KMSAN: uninit-value in kallsyms_lookup+0x148/0x8e0 kernel/kallsyms.c:292 CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.6.0-rc7-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+0x1c9/0x220 lib/dump_stack.c:118 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215 is_kernel include/linux/kallsyms.h:41 [inline] is_ksym_addr include/linux/kallsyms.h:49 [inline] kallsyms_lookup+0x148/0x8e0 kernel/kallsyms.c:292 __sprint_symbol+0x140/0x590 kernel/kallsyms.c:365 sprint_symbol+0x7c/0x90 kernel/kallsyms.c:396 symbol_string+0x157/0x420 lib/vsprintf.c:961 pointer+0x1560/0x1e40 lib/vsprintf.c:2188 vsnprintf+0x1a2a/0x31b0 lib/vsprintf.c:2578 vscnprintf+0xc2/0x180 lib/vsprintf.c:2677 vprintk_store+0xef/0x11d0 kernel/printk/printk.c:1917 vprintk_emit+0x2c0/0x860 kernel/printk/printk.c:1984 vprintk_default+0x90/0xa0 kernel/printk/printk.c:2029 vprintk_func+0x636/0x820 kernel/printk/printk_safe.c:386 printk+0x18b/0x1d3 kernel/printk/printk.c:2062 stack_trace_print+0x1b1/0x1f0 kernel/stacktrace.c:32 kmsan_print_origin+0x180/0x190 mm/kmsan/kmsan_report.c:59 kmsan_internal_chain_origin+0x76/0x130 mm/kmsan/kmsan.c:302 kmsan_memcpy_memmove_metadata+0x272/0x2e0 mm/kmsan/kmsan.c:247 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:267 __msan_memcpy+0x43/0x50 mm/kmsan/kmsan_instr.c:116 pskb_expand_head+0x38b/0x1b00 net/core/skbuff.c:1636 __skb_cow include/linux/skbuff.h:3169 [inline] skb_cow_head include/linux/skbuff.h:3203 [inline] geneve_build_skb+0x4c0/0xe00 drivers/net/geneve.c:754 geneve_xmit_skb drivers/net/geneve.c:925 [inline] geneve_xmit+0x25a3/0x2c20 drivers/net/geneve.c:1004 __netdev_start_xmit include/linux/netdevice.h:4523 [inline] netdev_start_xmit include/linux/netdevice.h:4537 [inline] xmit_one net/core/dev.c:3477 [inline] dev_hard_start_xmit+0x531/0xab0 net/core/dev.c:3493 __dev_queue_xmit+0x2f8d/0x3b20 net/core/dev.c:4052 dev_queue_xmit+0x4b/0x60 net/core/dev.c:4085 br_dev_queue_push_xmit+0x7f5/0x8b0 net/bridge/br_forward.c:52 br_nf_dev_queue_xmit+0x693/0x1910 include/linux/skbuff.h:4219 NF_HOOK include/linux/netfilter.h:307 [inline] br_nf_post_routing+0x152e/0x17e0 net/bridge/br_netfilter_hooks.c:851 nf_hook_entry_hookfn include/linux/netfilter.h:135 [inline] nf_hook_slow+0x16e/0x400 net/netfilter/core.c:512 nf_hook include/linux/netfilter.h:262 [inline] NF_HOOK include/linux/netfilter.h:305 [inline] br_forward_finish+0x24a/0x3f0 net/bridge/br_forward.c:65 br_nf_hook_thresh net/bridge/br_netfilter_hooks.c:1009 [inline] br_nf_forward_finish+0xf47/0x11a0 net/bridge/br_netfilter_hooks.c:564 NF_HOOK include/linux/netfilter.h:307 [inline] br_nf_forward_ip+0x1d4e/0x1f30 net/bridge/br_netfilter_hooks.c:634 nf_hook_entry_hookfn include/linux/netfilter.h:135 [inline] nf_hook_slow+0x16e/0x400 net/netfilter/core.c:512 nf_hook include/linux/netfilter.h:262 [inline] NF_HOOK include/linux/netfilter.h:305 [inline] __br_forward+0x75c/0xe30 net/bridge/br_forward.c:109 deliver_clone net/bridge/br_forward.c:125 [inline] maybe_deliver net/bridge/br_forward.c:181 [inline] br_flood+0xb0b/0xf90 net/bridge/br_forward.c:223 br_handle_frame_finish+0x1a00/0x1bb0 net/bridge/br_input.c:165 br_nf_hook_thresh+0x4f7/0x680 net/bridge/br_netfilter_hooks.c:1021 br_nf_pre_routing_finish_ipv6+0xe72/0x1000 net/bridge/br_netfilter_ipv6.c:187 NF_HOOK include/linux/netfilter.h:307 [inline] br_nf_pre_routing_ipv6+0x6ad/0x7f0 net/bridge/br_netfilter_ipv6.c:236 br_nf_pre_routing+0xd0e/0x1fd0 net/bridge/br_netfilter_hooks.c:505 nf_hook_entry_hookfn include/linux/netfilter.h:135 [inline] nf_hook_bridge_pre net/bridge/br_input.c:227 [inline] br_handle_frame+0xcd2/0x2050 net/bridge/br_input.c:352 __netif_receive_skb_core+0x21de/0x5840 net/core/dev.c:5088 __netif_receive_skb_one_core net/core/dev.c:5185 [inline] __netif_receive_skb net/core/dev.c:5301 [inline] process_backlog+0x936/0x1410 net/core/dev.c:6133 napi_poll net/core/dev.c:6571 [inline] net_rx_action+0x786/0x1aa0 net/core/dev.c:6639 __do_softirq+0x311/0x83d kernel/softirq.c:293 run_ksoftirqd+0x25/0x40 kernel/softirq.c:607 smpboot_thread_fn+0x493/0x980 kernel/smpboot.c:165 kthread+0x4b5/0x4f0 kernel/kthread.c:256 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:353 Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:144 kmsan_internal_alloc_meta_for_pages mm/kmsan/kmsan_shadow.c:280 [inline] kmsan_alloc_page+0xb9/0x180 mm/kmsan/kmsan_shadow.c:304 __alloc_pages_nodemask+0x5712/0x5e80 mm/page_alloc.c:4777 __alloc_pages include/linux/gfp.h:496 [inline] __alloc_pages_node include/linux/gfp.h:509 [inline] alloc_pages_node include/linux/gfp.h:523 [inline] __page_frag_cache_refill mm/page_alloc.c:4852 [inline] page_frag_alloc+0x3ae/0x910 mm/page_alloc.c:4882 __netdev_alloc_skb+0x703/0xbb0 net/core/skbuff.c:456 __netdev_alloc_skb_ip_align include/linux/skbuff.h:2850 [inline] netdev_alloc_skb_ip_align include/linux/skbuff.h:2860 [inline] batadv_iv_ogm_aggregate_new net/batman-adv/bat_iv_ogm.c:558 [inline] batadv_iv_ogm_queue_add+0x10da/0x1900 net/batman-adv/bat_iv_ogm.c:670 batadv_iv_ogm_schedule_buff net/batman-adv/bat_iv_ogm.c:833 [inline] batadv_iv_ogm_schedule+0xd4c/0x1430 net/batman-adv/bat_iv_ogm.c:869 batadv_iv_iface_enabled+0x37/0x40 net/batman-adv/bat_iv_ogm.c:2396 batadv_hardif_enable_interface+0x1525/0x1890 net/batman-adv/hard-interface.c:801 batadv_softif_slave_add+0x198/0x260 net/batman-adv/soft-interface.c:859 do_set_master net/core/rtnetlink.c:2468 [inline] do_setlink+0x1bd9/0x62e0 net/core/rtnetlink.c:2603 __rtnl_newlink net/core/rtnetlink.c:3252 [inline] rtnl_newlink+0x2edd/0x3920 net/core/rtnetlink.c:3377 rtnetlink_rcv_msg+0x1153/0x1570 net/core/rtnetlink.c:5436 netlink_rcv_skb+0x451/0x650 net/netlink/af_netlink.c:2478 rtnetlink_rcv+0x50/0x60 net/core/rtnetlink.c:5454 netlink_unicast_kernel net/netlink/af_netlink.c:1303 [inline] netlink_unicast+0xf9e/0x1100 net/netlink/af_netlink.c:1329 netlink_sendmsg+0x1246/0x14d0 net/netlink/af_netlink.c:1918 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg net/socket.c:672 [inline] __sys_sendto+0xc1b/0xc50 net/socket.c:2000 __do_compat_sys_socketcall net/compat.c:771 [inline] __se_compat_sys_socketcall+0xede/0x1460 net/compat.c:719 __ia32_compat_sys_socketcall+0x91/0xc0 net/compat.c:719 do_syscall_32_irqs_on arch/x86/entry/common.c:339 [inline] do_fast_syscall_32+0x3c7/0x6e0 arch/x86/entry/common.c:410 entry_SYSENTER_compat+0x68/0x77 arch/x86/entry/entry_64_compat.S:139 =====================================================