================================================================== ------------[ cut here ]------------ kmsan_get_shadow_address_inline(fffffe0000016f08, 8, 1) CPU: 1 PID: 9870 Comm: syz-executor3 Not tainted 4.17.0+ #17 WARNING: CPU: 0 PID: 9874 at mm/kmsan/kmsan_instr.c:153 kmsan_get_shadow_address_inline+0x192/0x2e0 mm/kmsan/kmsan_instr.c:153 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Kernel panic - not syncing: panic_on_warn set ... Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x185/0x1d0 lib/dump_stack.c:113 kmsan_report+0x188/0x2a0 mm/kmsan/kmsan.c:1368 __msan_warning_32+0x70/0xc0 mm/kmsan/kmsan_instr.c:634 ip_tunnel_xmit+0x5dc/0x37c0 net/ipv4/ip_tunnel.c:645 __gre_xmit net/ipv4/ip_gre.c:449 [inline] ipgre_xmit+0xe16/0xef0 net/ipv4/ip_gre.c:689 __netdev_start_xmit include/linux/netdevice.h:4087 [inline] netdev_start_xmit include/linux/netdevice.h:4096 [inline] xmit_one net/core/dev.c:3053 [inline] dev_hard_start_xmit+0x5f6/0xc80 net/core/dev.c:3069 __dev_queue_xmit+0x2ad2/0x3540 net/core/dev.c:3584 dev_queue_xmit+0x4b/0x60 net/core/dev.c:3617 packet_snd net/packet/af_packet.c:2953 [inline] packet_sendmsg+0x818b/0x8cc0 net/packet/af_packet.c:2978 sock_sendmsg_nosec net/socket.c:629 [inline] sock_sendmsg net/socket.c:639 [inline] __sys_sendto+0x6c4/0x7e0 net/socket.c:1789 __do_sys_sendto net/socket.c:1801 [inline] __se_sys_sendto net/socket.c:1797 [inline] __x64_sys_sendto+0x1a1/0x210 net/socket.c:1797 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x455ab9 RSP: 002b:00007ff16580fc68 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007ff1658106d4 RCX: 0000000000455ab9 RDX: 000000000000000e RSI: 0000000020000140 RDI: 0000000000000013 RBP: 000000000072bea0 R08: 0000000020000080 R09: 000000000000001c R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004c10ba R14: 00000000004d1208 R15: 0000000000000000 CPU: 0 PID: 9874 Comm: syz-executor1 Not tainted 4.17.0+ #17 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 kmsan_save_stack_with_flags mm/kmsan/kmsan.c:287 [inline] kmsan_internal_poison_shadow+0xb8/0x1b0 mm/kmsan/kmsan.c:197 Call Trace: kmsan_kmalloc+0x94/0x100 mm/kmsan/kmsan.c:323 <#DB> kmsan_slab_alloc+0x10/0x20 mm/kmsan/kmsan.c:330 __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x185/0x1d0 lib/dump_stack.c:113 slab_post_alloc_hook mm/slab.h:446 [inline] slab_alloc_node mm/slub.c:2753 [inline] __kmalloc_node_track_caller+0xb35/0x11b0 mm/slub.c:4395 panic+0x3d0/0x990 kernel/panic.c:184 __kmalloc_reserve net/core/skbuff.c:138 [inline] __alloc_skb+0x2cb/0x9e0 net/core/skbuff.c:206 __warn+0x40f/0x580 kernel/panic.c:536 alloc_skb include/linux/skbuff.h:988 [inline] alloc_skb_with_frags+0x1e6/0xb80 net/core/skbuff.c:5254 sock_alloc_send_pskb+0xb56/0x11a0 net/core/sock.c:2088 report_bug+0x72a/0x880 lib/bug.c:186 packet_alloc_skb net/packet/af_packet.c:2810 [inline] packet_snd net/packet/af_packet.c:2901 [inline] packet_sendmsg+0x6672/0x8cc0 net/packet/af_packet.c:2978 sock_sendmsg_nosec net/socket.c:629 [inline] sock_sendmsg net/socket.c:639 [inline] __sys_sendto+0x6c4/0x7e0 net/socket.c:1789 __do_sys_sendto net/socket.c:1801 [inline] __se_sys_sendto net/socket.c:1797 [inline] __x64_sys_sendto+0x1a1/0x210 net/socket.c:1797 fixup_bug arch/x86/kernel/traps.c:179 [inline] do_error_trap+0x1c1/0x620 arch/x86/kernel/traps.c:298 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x63/0xe7 do_invalid_op+0x46/0x50 arch/x86/kernel/traps.c:317 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:997 RIP: 0010:kmsan_get_shadow_address_inline+0x192/0x2e0 mm/kmsan/kmsan_instr.c:153 RSP: 0018:fffffe0000016da8 EFLAGS: 00010082 RAX: 0000000000000037 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffffc90001d9b000 RSI: 0000000000019930 RDI: 0000000000019931 RBP: fffffe0000016df0 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: ffffffff86577160 R12: 0000000000000000 R13: 0000000000000001 R14: 0000000000000008 R15: ffff880193ef57c0 __msan_poison_alloca+0xa7/0x1d0 mm/kmsan/kmsan_instr.c:582 do_debug+0x5b/0x800 arch/x86/kernel/traps.c:723 debug+0x28/0x50 arch/x86/entry/entry_64.S:1156 RIP: 0010:__get_user_4+0x24/0x30 arch/x86/lib/getuser.S:78 RSP: 0018:ffff88011a04fa48 EFLAGS: 00000206 RAX: 0000000020000003 RBX: ffff88011a04fa50 RCX: 00000000ffffff01 RDX: 000000000000008b RSI: 0000000000000010 RDI: 0000000000000011 RBP: ffff88011a04fc30 R08: 0000000001080020 R09: 0000000000000002 R10: 0000000000000000 R11: ffffffff8881e050 R12: 0000000000000000 R13: ffff880193ef6098 R14: 0000000000000000 R15: 0000000000000002 ip_getsockopt+0x11a/0x3c0 net/ipv4/ip_sockglue.c:1552 udp_getsockopt+0x10c/0x1b0 net/ipv4/udp.c:2488 sock_common_getsockopt+0x13f/0x180 net/core/sock.c:2998 __sys_getsockopt+0x48c/0x550 net/socket.c:1940 __do_sys_getsockopt net/socket.c:1951 [inline] __se_sys_getsockopt net/socket.c:1948 [inline] __x64_sys_getsockopt+0x15d/0x1c0 net/socket.c:1948 do_syscall_64+0x15b/0x230 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x455ab9 RSP: 002b:00007fb6a3461c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007fb6a34626d4 RCX: 0000000000455ab9 RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000014 RBP: 000000000072bea0 R08: 0000000020000000 R09: 0000000000000000 R10: 0000000020000080 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004bbe79 R14: 00000000004c9390 R15: 0000000000000000 Dumping ftrace buffer: (ftrace buffer empty) Kernel Offset: disabled Rebooting in 86400 seconds..