TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. Enabling of bearer rejected, failed to enable media ================================================================== BUG: KMSAN: kernel-infoleak in _copy_to_user+0x16b/0x1f0 lib/usercopy.c:32 CPU: 1 PID: 10710 Comm: rsyslogd Not tainted 5.0.0+ #16 Enabling of bearer rejected, failed to enable media 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+0x173/0x1d0 lib/dump_stack.c:113 kmsan_report+0x131/0x2a0 mm/kmsan/kmsan.c:636 kmsan_internal_check_memory+0x5c6/0xbb0 mm/kmsan/kmsan.c:701 kmsan_copy_to_user+0xab/0xc0 mm/kmsan/kmsan_hooks.c:485 _copy_to_user+0x16b/0x1f0 lib/usercopy.c:32 copy_to_user include/linux/uaccess.h:174 [inline] syslog_print kernel/printk/printk.c:1362 [inline] do_syslog+0x3c22/0x3ef0 kernel/printk/printk.c:1487 kmsg_read+0x142/0x1a0 fs/proc/kmsg.c:40 proc_reg_read+0x2a2/0x3d0 fs/proc/inode.c:229 __vfs_read+0x1e5/0xbf0 fs/read_write.c:416 vfs_read+0x359/0x6f0 fs/read_write.c:452 ksys_read fs/read_write.c:578 [inline] __do_sys_read fs/read_write.c:588 [inline] __se_sys_read+0x17a/0x370 fs/read_write.c:586 __x64_sys_read+0x4a/0x70 fs/read_write.c:586 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x7fd84c4b71fd Code: d1 20 00 00 75 10 b8 00 00 00 00 0f 05 48 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 5e fa ff ff 48 89 04 24 b8 00 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 a7 fa ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007fd849a56e30 EFLAGS: 00000293 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 000000000160cce0 RCX: 00007fd84c4b71fd RDX: 0000000000000fff RSI: 00007fd84b28b5a0 RDI: 0000000000000004 RBP: 0000000000000000 R08: 00000000015f8260 R09: 0000000004000001 R10: 0000000000000001 R11: 0000000000000293 R12: 000000000065e420 R13: 00007fd849a579c0 R14: 00007fd84cafc040 R15: 0000000000000003 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:205 [inline] kmsan_save_stack mm/kmsan/kmsan.c:220 [inline] kmsan_internal_chain_origin+0x134/0x230 mm/kmsan/kmsan.c:426 kmsan_memcpy_memmove_metadata+0xb5b/0xfe0 mm/kmsan/kmsan.c:304 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:324 __msan_memcpy+0x58/0x70 mm/kmsan/kmsan_instr.c:139 msg_print_text+0x5bc/0x770 kernel/printk/printk.c:1294 syslog_print kernel/printk/printk.c:1343 [inline] do_syslog+0x37fc/0x3ef0 kernel/printk/printk.c:1487 kmsg_read+0x142/0x1a0 fs/proc/kmsg.c:40 proc_reg_read+0x2a2/0x3d0 fs/proc/inode.c:229 __vfs_read+0x1e5/0xbf0 fs/read_write.c:416 vfs_read+0x359/0x6f0 fs/read_write.c:452 ksys_read fs/read_write.c:578 [inline] __do_sys_read fs/read_write.c:588 [inline] __se_sys_read+0x17a/0x370 fs/read_write.c:586 __x64_sys_read+0x4a/0x70 fs/read_write.c:586 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:205 [inline] kmsan_save_stack mm/kmsan/kmsan.c:220 [inline] kmsan_internal_chain_origin+0x134/0x230 mm/kmsan/kmsan.c:426 kmsan_memcpy_memmove_metadata+0xb5b/0xfe0 mm/kmsan/kmsan.c:304 kmsan_memcpy_metadata+0xb/0x10 mm/kmsan/kmsan.c:324 __msan_memcpy+0x58/0x70 mm/kmsan/kmsan_instr.c:139 log_store+0xdea/0x1370 kernel/printk/printk.c:625 log_output kernel/printk/printk.c:1848 [inline] vprintk_store+0x9d2/0xed0 kernel/printk/printk.c:1901 vprintk_emit+0x2c6/0x840 kernel/printk/printk.c:1925 vprintk_default+0x90/0xa0 kernel/printk/printk.c:1970 vprintk_func+0x635/0x820 kernel/printk/printk_safe.c:398 printk+0x186/0x1d0 kernel/printk/printk.c:2003 tipc_enable_bearer net/tipc/bearer.c:339 [inline] __tipc_nl_bearer_enable+0x106f/0x1d50 net/tipc/bearer.c:899 tipc_nl_bearer_enable+0x6c/0xb0 net/tipc/bearer.c:907 genl_family_rcv_msg net/netlink/genetlink.c:601 [inline] genl_rcv_msg+0x185f/0x1a60 net/netlink/genetlink.c:626 netlink_rcv_skb+0x431/0x620 net/netlink/af_netlink.c:2477 genl_rcv+0x63/0x80 net/netlink/genetlink.c:637 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0xf3e/0x1020 net/netlink/af_netlink.c:1336 netlink_sendmsg+0x127f/0x1300 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg net/socket.c:632 [inline] ___sys_sendmsg+0xdb9/0x11b0 net/socket.c:2115 __sys_sendmsg net/socket.c:2153 [inline] __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg+0x305/0x460 net/socket.c:2160 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2160 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:205 [inline] kmsan_save_stack mm/kmsan/kmsan.c:220 [inline] kmsan_internal_chain_origin+0x134/0x230 mm/kmsan/kmsan.c:426 __msan_chain_origin+0x70/0xe0 mm/kmsan/kmsan_instr.c:200 string+0x276/0x340 lib/vsprintf.c:609 vsnprintf+0x1181/0x30e0 lib/vsprintf.c:2396 vscnprintf+0xc2/0x180 lib/vsprintf.c:2499 vprintk_store+0xef/0xed0 kernel/printk/printk.c:1865 vprintk_emit+0x2c6/0x840 kernel/printk/printk.c:1925 vprintk_default+0x90/0xa0 kernel/printk/printk.c:1970 vprintk_func+0x635/0x820 kernel/printk/printk_safe.c:398 printk+0x186/0x1d0 kernel/printk/printk.c:2003 tipc_enable_bearer net/tipc/bearer.c:339 [inline] __tipc_nl_bearer_enable+0x106f/0x1d50 net/tipc/bearer.c:899 tipc_nl_bearer_enable+0x6c/0xb0 net/tipc/bearer.c:907 genl_family_rcv_msg net/netlink/genetlink.c:601 [inline] genl_rcv_msg+0x185f/0x1a60 net/netlink/genetlink.c:626 netlink_rcv_skb+0x431/0x620 net/netlink/af_netlink.c:2477 genl_rcv+0x63/0x80 net/netlink/genetlink.c:637 netlink_unicast_kernel net/netlink/af_netlink.c:1310 [inline] netlink_unicast+0xf3e/0x1020 net/netlink/af_netlink.c:1336 netlink_sendmsg+0x127f/0x1300 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg net/socket.c:632 [inline] ___sys_sendmsg+0xdb9/0x11b0 net/socket.c:2115 __sys_sendmsg net/socket.c:2153 [inline] __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg+0x305/0x460 net/socket.c:2160 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2160 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:205 [inline] kmsan_internal_poison_shadow+0x92/0x150 mm/kmsan/kmsan.c:159 kmsan_kmalloc+0xa6/0x130 mm/kmsan/kmsan_hooks.c:173 kmsan_slab_alloc+0xe/0x10 mm/kmsan/kmsan_hooks.c:182 slab_post_alloc_hook mm/slab.h:445 [inline] slab_alloc_node mm/slub.c:2773 [inline] __kmalloc_node_track_caller+0xe9e/0xff0 mm/slub.c:4398 __kmalloc_reserve net/core/skbuff.c:140 [inline] __alloc_skb+0x309/0xa20 net/core/skbuff.c:208 alloc_skb include/linux/skbuff.h:1012 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1182 [inline] netlink_sendmsg+0xb82/0x1300 net/netlink/af_netlink.c:1892 sock_sendmsg_nosec net/socket.c:622 [inline] sock_sendmsg net/socket.c:632 [inline] ___sys_sendmsg+0xdb9/0x11b0 net/socket.c:2115 __sys_sendmsg net/socket.c:2153 [inline] __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg+0x305/0x460 net/socket.c:2160 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2160 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 Bytes 50-51 of 87 are uninitialized Memory access of size 87 starts at ffff888043bfac00 Data copied to user address 00007fd84b28b617 ==================================================================