syzkaller0: entered promiscuous mode syzkaller0: entered allmulticast mode ------------[ cut here ]------------ WARNING: CPU: 0 PID: 5965 at net/core/skbuff.c:1192 __sk_skb_reason_drop net/core/skbuff.c:1189 [inline] WARNING: CPU: 0 PID: 5965 at net/core/skbuff.c:1192 sk_skb_reason_drop+0x76/0x170 net/core/skbuff.c:1214 Modules linked in: CPU: 0 UID: 0 PID: 5965 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:__sk_skb_reason_drop net/core/skbuff.c:1189 [inline] RIP: 0010:sk_skb_reason_drop+0x76/0x170 net/core/skbuff.c:1214 Code: 20 2e a0 f8 83 fd 01 75 26 41 8d ae 00 00 fd ff bf 01 00 fd ff 89 ee e8 08 2e a0 f8 81 fd 00 00 fd ff 77 32 e8 bb 29 a0 f8 90 <0f> 0b 90 eb 53 bf 01 00 00 00 89 ee e8 e9 2d a0 f8 85 ed 0f 8e b2 RSP: 0018:ffffc9000284f3b0 EFLAGS: 00010293 RAX: ffffffff891fdcd5 RBX: ffff888113587680 RCX: ffff88816e6f3a00 RDX: 0000000000000000 RSI: 000000006e1a2a10 RDI: 00000000fffd0001 RBP: 000000006e1a2a10 R08: ffff888113587767 R09: 1ffff110226b0eec R10: dffffc0000000000 R11: ffffed10226b0eed R12: ffff888113587764 R13: dffffc0000000000 R14: 000000006e1d2a10 R15: 0000000000000000 FS: 000055558e11c500(0000) GS:ffff88818eb38000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000002280 CR3: 000000011053c000 CR4: 00000000000006f0 Call Trace: kfree_skb_reason include/linux/skbuff.h:1322 [inline] tcf_kfree_skb_list include/net/sch_generic.h:1127 [inline] __dev_xmit_skb net/core/dev.c:4258 [inline] __dev_queue_xmit+0x2669/0x3180 net/core/dev.c:4783 packet_snd net/packet/af_packet.c:3076 [inline] packet_sendmsg+0x3e33/0x5080 net/packet/af_packet.c:3108 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:742 ____sys_sendmsg+0x505/0x830 net/socket.c:2630 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2684 __sys_sendmsg net/socket.c:2716 [inline] __do_sys_sendmsg net/socket.c:2721 [inline] __se_sys_sendmsg net/socket.c:2719 [inline] __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2719 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc1a7b8efc9 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff4ba6d968 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fc1a7de5fa0 RCX: 00007fc1a7b8efc9 RDX: 0000000000000004 RSI: 00002000000000c0 RDI: 0000000000000007 RBP: 00007fc1a7c11f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fc1a7de5fa0 R14: 00007fc1a7de5fa0 R15: 0000000000000003