===================================================== BUG: KMSAN: uninit-value in hsr_register_frame_in+0x189/0x260 net/hsr/hsr_framereg.c:400 CPU: 0 PID: 15703 Comm: syz-executor.2 Tainted: G W 5.12.0-rc6-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x24c/0x2e0 lib/dump_stack.c:120 kmsan_report+0xfb/0x1e0 mm/kmsan/kmsan_report.c:121 __msan_warning+0x5c/0xa0 mm/kmsan/kmsan_instr.c:197 hsr_register_frame_in+0x189/0x260 net/hsr/hsr_framereg.c:400 hsr_forward_skb+0xea1/0x27f0 net/hsr/hsr_forward.c:567 hsr_dev_xmit+0x133/0x230 net/hsr/hsr_device.c:220 __netdev_start_xmit include/linux/netdevice.h:4825 [inline] netdev_start_xmit include/linux/netdevice.h:4839 [inline] xmit_one+0x2b6/0x760 net/core/dev.c:3605 dev_hard_start_xmit net/core/dev.c:3621 [inline] __dev_queue_xmit+0x3432/0x4600 net/core/dev.c:4194 dev_queue_xmit+0x4b/0x60 net/core/dev.c:4227 packet_snd net/packet/af_packet.c:3006 [inline] packet_sendmsg+0x86ee/0x99d0 net/packet/af_packet.c:3031 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg net/socket.c:674 [inline] __sys_sendto+0x9ea/0xc60 net/socket.c:1977 __do_sys_sendto net/socket.c:1989 [inline] __se_sys_sendto+0x107/0x130 net/socket.c:1985 __x64_sys_sendto+0x6e/0x90 net/socket.c:1985 do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x4665d9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f3e76432188 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665d9 RDX: 000000000000000e RSI: 00000000200001c0 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf80 R13: 0000000000a9fb1f R14: 00007f3e76432300 R15: 0000000000022000 Uninit was stored to memory at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:120 [inline] kmsan_internal_chain_origin+0xad/0x130 mm/kmsan/kmsan.c:288 __msan_chain_origin+0x54/0xa0 mm/kmsan/kmsan_instr.c:147 hsr_fill_frame_info+0x5b3/0x6a0 net/hsr/hsr_forward.c:490 fill_frame_info net/hsr/hsr_forward.c:547 [inline] hsr_forward_skb+0xc4f/0x27f0 net/hsr/hsr_forward.c:564 hsr_dev_xmit+0x133/0x230 net/hsr/hsr_device.c:220 __netdev_start_xmit include/linux/netdevice.h:4825 [inline] netdev_start_xmit include/linux/netdevice.h:4839 [inline] xmit_one+0x2b6/0x760 net/core/dev.c:3605 dev_hard_start_xmit net/core/dev.c:3621 [inline] __dev_queue_xmit+0x3432/0x4600 net/core/dev.c:4194 dev_queue_xmit+0x4b/0x60 net/core/dev.c:4227 packet_snd net/packet/af_packet.c:3006 [inline] packet_sendmsg+0x86ee/0x99d0 net/packet/af_packet.c:3031 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg net/socket.c:674 [inline] __sys_sendto+0x9ea/0xc60 net/socket.c:1977 __do_sys_sendto net/socket.c:1989 [inline] __se_sys_sendto+0x107/0x130 net/socket.c:1985 __x64_sys_sendto+0x6e/0x90 net/socket.c:1985 do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48 entry_SYSCALL_64_after_hwframe+0x44/0xae Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:120 [inline] kmsan_internal_poison_shadow+0x66/0xd0 mm/kmsan/kmsan.c:103 kmsan_slab_alloc+0x8e/0xe0 mm/kmsan/kmsan_hooks.c:76 slab_alloc_node mm/slub.c:2922 [inline] __kmalloc_node_track_caller+0xa4f/0x1470 mm/slub.c:4609 kmalloc_reserve net/core/skbuff.c:353 [inline] __alloc_skb+0x4dd/0xe90 net/core/skbuff.c:424 alloc_skb include/linux/skbuff.h:1103 [inline] alloc_skb_with_frags+0x1f3/0xc10 net/core/skbuff.c:5948 sock_alloc_send_pskb+0xdc1/0xf90 net/core/sock.c:2362 packet_alloc_skb net/packet/af_packet.c:2854 [inline] packet_snd net/packet/af_packet.c:2949 [inline] packet_sendmsg+0x6a12/0x99d0 net/packet/af_packet.c:3031 sock_sendmsg_nosec net/socket.c:654 [inline] sock_sendmsg net/socket.c:674 [inline] __sys_sendto+0x9ea/0xc60 net/socket.c:1977 __do_sys_sendto net/socket.c:1989 [inline] __se_sys_sendto+0x107/0x130 net/socket.c:1985 __x64_sys_sendto+0x6e/0x90 net/socket.c:1985 do_syscall_64+0x9f/0x140 arch/x86/entry/common.c:48 entry_SYSCALL_64_after_hwframe+0x44/0xae =====================================================