__netif_receive_skb_one_core net/core/dev.c:5279 [inline] __netif_receive_skb net/core/dev.c:5395 [inline] process_backlog+0x605/0x14e0 net/core/dev.c:6239 napi_poll net/core/dev.c:6684 [inline] net_rx_action+0x746/0x1aa0 net/core/dev.c:6752 __do_softirq+0x311/0x83d kernel/softirq.c:293 Uninit was created at: ===================================================== BUG: KMSAN: uninit-value in is_kernel include/linux/kallsyms.h:42 [inline] BUG: KMSAN: uninit-value in is_ksym_addr include/linux/kallsyms.h:50 [inline] BUG: KMSAN: uninit-value in kallsyms_lookup+0x148/0x770 kernel/kallsyms.c:290 CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.8.0-rc5-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+0x1df/0x240 lib/dump_stack.c:118 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:121 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215 is_kernel include/linux/kallsyms.h:42 [inline] is_ksym_addr include/linux/kallsyms.h:50 [inline] kallsyms_lookup+0x148/0x770 kernel/kallsyms.c:290 __sprint_symbol+0x140/0x590 kernel/kallsyms.c:363 sprint_symbol+0x7c/0x90 kernel/kallsyms.c:394 symbol_string+0x157/0x420 lib/vsprintf.c:969 pointer+0x1396/0x1cf0 lib/vsprintf.c:2226 vsnprintf+0x1a2a/0x31b0 lib/vsprintf.c:2624 vscnprintf+0xc2/0x180 lib/vsprintf.c:2723 vprintk_store+0xef/0x11d0 kernel/printk/printk.c:1943 vprintk_emit+0x2c0/0x8b0 kernel/printk/printk.c:2010 vprintk_default+0x90/0xa0 kernel/printk/printk.c:2046 vprintk_func+0x228/0x230 kernel/printk/printk_safe.c:393 printk+0x18b/0x1d3 kernel/printk/printk.c:2077 stack_trace_print+0x1b1/0x1f0 kernel/stacktrace.c:32 kmsan_print_origin+0x1a0/0x1b0 mm/kmsan/kmsan_report.c:62 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:3145 [inline] skb_cow include/linux/skbuff.h:3164 [inline] skb_reorder_vlan_header net/core/skbuff.c:5388 [inline] skb_vlan_untag+0x757/0xdb0 net/core/skbuff.c:5433 __netif_receive_skb_core+0x3866/0x5890 net/core/dev.c:5204 __netif_receive_skb_one_core net/core/dev.c:5279 [inline] __netif_receive_skb net/core/dev.c:5395 [inline] netif_receive_skb_internal net/core/dev.c:5497 [inline] netif_receive_skb+0x56c/0xff0 net/core/dev.c:5556 br_netif_receive_skb net/bridge/br_input.c:30 [inline] NF_HOOK include/linux/netfilter.h:307 [inline] br_pass_frame_up+0x964/0x9c0 net/bridge/br_input.c:65 br_handle_frame_finish+0x1a37/0x1bb0 net/bridge/br_input.c:172 nf_hook_bridge_pre net/bridge/br_input.c:250 [inline] br_handle_frame+0x1028/0x2050 net/bridge/br_input.c:356 __netif_receive_skb_core+0x213f/0x5890 net/core/dev.c:5175 __netif_receive_skb_one_core net/core/dev.c:5279 [inline] __netif_receive_skb net/core/dev.c:5395 [inline] process_backlog+0x605/0x14e0 net/core/dev.c:6239 napi_poll net/core/dev.c:6684 [inline] net_rx_action+0x746/0x1aa0 net/core/dev.c:6752 __do_softirq+0x311/0x83d kernel/softirq.c:293 run_ksoftirqd+0x25/0x40 kernel/softirq.c:634 smpboot_thread_fn+0x493/0x980 kernel/smpboot.c:165 kthread+0x515/0x550 kernel/kthread.c:292 ret_from_fork+0x22/0x30 arch/x86/entry/entry_64.S:293 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:269 [inline] kmsan_alloc_page+0xb9/0x180 mm/kmsan/kmsan_shadow.c:293 __alloc_pages_nodemask+0x56a2/0x5dc0 mm/page_alloc.c:4889 alloc_pages_current+0x672/0x990 mm/mempolicy.c:2292 alloc_pages include/linux/gfp.h:545 [inline] stack_depot_save+0x3dd/0x490 lib/stackdepot.c:301 kmsan_internal_chain_origin+0xf0/0x130 mm/kmsan/kmsan.c:312 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 kstrdup mm/util.c:62 [inline] kstrdup_const+0x1cc/0x240 mm/util.c:82 __kernfs_new_node+0x10f/0xba0 fs/kernfs/dir.c:623 kernfs_new_node fs/kernfs/dir.c:689 [inline] kernfs_create_dir_ns+0x1ef/0x5b0 fs/kernfs/dir.c:1026 sysfs_create_dir_ns+0x259/0x600 fs/sysfs/dir.c:59 create_dir lib/kobject.c:89 [inline] kobject_add_internal+0xe83/0x1a90 lib/kobject.c:255 kobject_add_varg lib/kobject.c:390 [inline] kobject_init_and_add+0x468/0x780 lib/kobject.c:473 rx_queue_add_kobject net/core/net-sysfs.c:959 [inline] net_rx_queue_update_kobjects+0x280/0x8b0 net/core/net-sysfs.c:1010 register_queue_kobjects net/core/net-sysfs.c:1644 [inline] netdev_register_kobject+0x49f/0x710 net/core/net-sysfs.c:1892 register_netdevice+0x24d9/0x3290 net/core/dev.c:9514 register_vlan_dev+0x56e/0xca0 net/8021q/vlan.c:175 vlan_newlink+0x9f4/0xa90 net/8021q/vlan_netlink.c:187 __rtnl_newlink net/core/rtnetlink.c:3339 [inline] rtnl_newlink+0x2973/0x3900 net/core/rtnetlink.c:3397 rtnetlink_rcv_msg+0x1184/0x15c0 net/core/rtnetlink.c:5460 netlink_rcv_skb+0x451/0x650 net/netlink/af_netlink.c:2469 rtnetlink_rcv+0x50/0x60 net/core/rtnetlink.c:5478 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_sendmsg+0x1370/0x1400 net/socket.c:2352 ___sys_sendmsg net/socket.c:2406 [inline] __sys_sendmsg+0x623/0x750 net/socket.c:2439 __do_sys_sendmsg net/socket.c:2448 [inline] __se_sys_sendmsg+0x97/0xb0 net/socket.c:2446 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2446 do_syscall_64+0xb0/0x150 arch/x86/entry/common.c:386 entry_SYSCALL_64_after_hwframe+0x44/0xa9 =====================================================