binder: 13911:13914 unknown command 691354488 binder: 13911:13914 ioctl c0306201 200000c0 returned -22 ================================================================== BUG: KMSAN: uninit-value in _decode_session6+0x635/0x1630 net/ipv6/xfrm6_policy.c:149 CPU: 0 PID: 13916 Comm: syz-executor0 Not tainted 4.19.0-rc8+ #71 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+0x306/0x460 lib/dump_stack.c:113 binder: 13911:13914 ERROR: BC_REGISTER_LOOPER called without request kmsan_report+0x1a2/0x2e0 mm/kmsan/kmsan.c:917 __msan_warning+0x7c/0xe0 mm/kmsan/kmsan_instr.c:500 _decode_session6+0x635/0x1630 net/ipv6/xfrm6_policy.c:149 __xfrm_decode_session net/xfrm/xfrm_policy.c:2299 [inline] __xfrm_policy_check+0x3d9/0x3af0 net/xfrm/xfrm_policy.c:2348 binder: 13911:13914 BC_CLEAR_DEATH_NOTIFICATION invalid ref 0 binder: 13911:13914 Release 1 refcount change on invalid ref 0 ret -22 binder: 13911:13914 got reply transaction with no transaction stack binder: 13911:13914 transaction failed 29201/-71, size 0-8 line 2762 __xfrm_policy_check2 include/net/xfrm.h:1196 [inline] xfrm_policy_check include/net/xfrm.h:1201 [inline] xfrm6_policy_check include/net/xfrm.h:1211 [inline] rawv6_rcv+0x323/0x1460 net/ipv6/raw.c:424 ipv6_raw_deliver net/ipv6/raw.c:224 [inline] raw6_local_deliver+0x1fe1/0x2410 net/ipv6/raw.c:240 ip6_input_finish+0x55e/0x2360 net/ipv6/ip6_input.c:345 NF_HOOK include/linux/netfilter.h:289 [inline] ip6_input+0x29d/0x340 net/ipv6/ip6_input.c:426 dst_input include/net/dst.h:450 [inline] ip6_rcv_finish+0x4d2/0x710 net/ipv6/ip6_input.c:76 NF_HOOK include/linux/netfilter.h:289 [inline] ipv6_rcv+0x34b/0x3f0 net/ipv6/ip6_input.c:271 __netif_receive_skb_one_core net/core/dev.c:4913 [inline] __netif_receive_skb net/core/dev.c:5023 [inline] process_backlog+0x82b/0x11d0 net/core/dev.c:5829 binder: 13911:13922 unknown command 691354488 napi_poll net/core/dev.c:6249 [inline] net_rx_action+0x975/0x1cf0 net/core/dev.c:6315 __do_softirq+0x601/0xa6d kernel/softirq.c:292 binder: 13911:13922 ioctl c0306201 200000c0 returned -22 do_softirq_own_stack+0x49/0x80 arch/x86/entry/entry_64.S:1055 do_softirq kernel/softirq.c:336 [inline] __local_bh_enable_ip+0x139/0x170 kernel/softirq.c:189 local_bh_enable+0x36/0x40 include/linux/bottom_half.h:32 rcu_read_unlock_bh include/linux/rcupdate.h:723 [inline] ip6_finish_output2+0x20a6/0x21f0 net/ipv6/ip6_output.c:121 binder: BINDER_SET_CONTEXT_MGR already set ip6_finish_output+0xbaa/0xc80 net/ipv6/ip6_output.c:154 NF_HOOK_COND include/linux/netfilter.h:278 [inline] ip6_output+0x5a0/0x6e0 net/ipv6/ip6_output.c:171 binder: 13911:13914 ioctl 40046207 0 returned -16 binder: 13911:13924 ERROR: BC_REGISTER_LOOPER called without request dst_output include/net/dst.h:444 [inline] ip6_local_out+0x164/0x1d0 net/ipv6/output_core.c:176 ip6_send_skb net/ipv6/ip6_output.c:1695 [inline] ip6_push_pending_frames+0x218/0x4d0 net/ipv6/ip6_output.c:1715 rawv6_push_pending_frames net/ipv6/raw.c:616 [inline] rawv6_sendmsg+0x4293/0x54d0 net/ipv6/raw.c:944 binder: 13911:13924 BC_CLEAR_DEATH_NOTIFICATION invalid ref 0 inet_sendmsg+0x4d8/0x7f0 net/ipv4/af_inet.c:798 binder: 13911:13924 Release 1 refcount change on invalid ref 0 ret -22 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg net/socket.c:631 [inline] sock_write_iter+0x404/0x4d0 net/socket.c:900 do_iter_readv_writev+0x822/0xab0 include/linux/fs.h:1802 binder: 13911:13924 got reply transaction with no transaction stack do_iter_write+0x302/0xd80 fs/read_write.c:959 vfs_writev fs/read_write.c:1004 [inline] do_writev+0x3d8/0x860 fs/read_write.c:1039 binder: 13911:13924 transaction failed 29201/-71, size 0-8 line 2762 binder: undelivered TRANSACTION_ERROR: 29201 __do_sys_writev fs/read_write.c:1112 [inline] __se_sys_writev+0x9b/0xb0 fs/read_write.c:1109 __x64_sys_writev+0x4a/0x70 fs/read_write.c:1109 binder: undelivered TRANSACTION_ERROR: 29201 do_syscall_64+0xbe/0x100 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x457569 Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fd77880fc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000457569 RDX: 0000000000000001 RSI: 0000000020000200 RDI: 0000000000000003 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fd7788106d4 R13: 00000000004c330c R14: 00000000004d9560 R15: 00000000ffffffff Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:255 [inline] kmsan_internal_poison_shadow+0xc8/0x1d0 mm/kmsan/kmsan.c:180 kmsan_kmalloc+0xa4/0x120 mm/kmsan/kmsan_hooks.c:104 kmsan_slab_alloc+0x10/0x20 mm/kmsan/kmsan_hooks.c:113 slab_post_alloc_hook mm/slab.h:446 [inline] slab_alloc_node mm/slub.c:2727 [inline] __kmalloc_node_track_caller+0xb43/0x1400 mm/slub.c:4360 __kmalloc_reserve net/core/skbuff.c:138 [inline] pskb_expand_head+0x319/0x1d00 net/core/skbuff.c:1461 __pskb_pull_tail+0x1db/0x21c0 net/core/skbuff.c:1895 pskb_may_pull include/linux/skbuff.h:2127 [inline] _decode_session6+0x7b0/0x1630 net/ipv6/xfrm6_policy.c:150 __xfrm_decode_session net/xfrm/xfrm_policy.c:2299 [inline] __xfrm_policy_check+0x3d9/0x3af0 net/xfrm/xfrm_policy.c:2348 __xfrm_policy_check2 include/net/xfrm.h:1196 [inline] xfrm_policy_check include/net/xfrm.h:1201 [inline] xfrm6_policy_check include/net/xfrm.h:1211 [inline] rawv6_rcv+0x323/0x1460 net/ipv6/raw.c:424 ipv6_raw_deliver net/ipv6/raw.c:224 [inline] raw6_local_deliver+0x1fe1/0x2410 net/ipv6/raw.c:240 ip6_input_finish+0x55e/0x2360 net/ipv6/ip6_input.c:345 NF_HOOK include/linux/netfilter.h:289 [inline] ip6_input+0x29d/0x340 net/ipv6/ip6_input.c:426 dst_input include/net/dst.h:450 [inline] ip6_rcv_finish+0x4d2/0x710 net/ipv6/ip6_input.c:76 NF_HOOK include/linux/netfilter.h:289 [inline] ipv6_rcv+0x34b/0x3f0 net/ipv6/ip6_input.c:271 __netif_receive_skb_one_core net/core/dev.c:4913 [inline] __netif_receive_skb net/core/dev.c:5023 [inline] process_backlog+0x82b/0x11d0 net/core/dev.c:5829 napi_poll net/core/dev.c:6249 [inline] net_rx_action+0x975/0x1cf0 net/core/dev.c:6315 __do_softirq+0x601/0xa6d kernel/softirq.c:292 ==================================================================