audit: type=1400 audit(1587716013.651:8): avc:  denied  { execmem } for  pid=6447 comm="syz-executor604" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 6447 Comm: syz-executor604 Not tainted 4.19.118-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:dequeue_head net/sched/sch_fq_codel.c:126 [inline]
RIP: 0010:fq_codel_drop net/sched/sch_fq_codel.c:174 [inline]
RIP: 0010:fq_codel_enqueue+0xa6c/0x11d0 net/sched/sch_fq_codel.c:236
Code: 00 00 00 e8 76 a7 a8 fb 48 8b 44 24 30 80 38 00 0f 85 99 05 00 00 48 be 00 00 00 00 00 fc ff df 49 8b 06 48 89 c2 48 c1 ea 03 <80> 3c 32 00 0f 85 88 05 00 00 48 8b 10 48 8d 78 28 48 b9 00 00 00
RSP: 0018:ffff8880899d7800 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 0000000000000000
RBP: ffff8880899d7900 R08: ffff8880a5d50040 R09: ffffffff8acfe008
R10: ffffffff8acfe010 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000400 R14: ffff888087300180 R15: ffff8880899d79d0
FS:  0000000000b16880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa686ded000 CR3: 00000000928b9000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __dev_xmit_skb net/core/dev.c:3498 [inline]
 __dev_queue_xmit+0x156b/0x3040 net/core/dev.c:3814
 packet_snd net/packet/af_packet.c:2976 [inline]
 packet_sendmsg+0x3835/0x5f90 net/packet/af_packet.c:3001
 sock_sendmsg_nosec net/socket.c:622 [inline]
 sock_sendmsg+0xcf/0x120 net/socket.c:632
 __sys_sendto+0x21a/0x330 net/socket.c:1787
 __do_sys_sendto net/socket.c:1799 [inline]
 __se_sys_sendto net/socket.c:1795 [inline]
 __x64_sys_sendto+0xdd/0x1b0 net/socket.c:1795
 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4404e9
Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffe1dc87658 EFLAGS: 00000246 ORIG_RAX: 000000000000002c
RAX: ffffffffffffffda RBX: 00000000004a167e RCX: 00000000004404e9
RDX: 00000000000001e8 RSI: 0000000020000480 RDI: 0000000000000005
RBP: 54c6c2ff093a6d32 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000010000
R13: 0000000000401e00 R14: 0000000000000000 R15: 0000000000000000
Modules linked in:
---[ end trace d0252909689ba180 ]---
RIP: 0010:dequeue_head net/sched/sch_fq_codel.c:126 [inline]
RIP: 0010:fq_codel_drop net/sched/sch_fq_codel.c:174 [inline]
RIP: 0010:fq_codel_enqueue+0xa6c/0x11d0 net/sched/sch_fq_codel.c:236
Code: 00 00 00 e8 76 a7 a8 fb 48 8b 44 24 30 80 38 00 0f 85 99 05 00 00 48 be 00 00 00 00 00 fc ff df 49 8b 06 48 89 c2 48 c1 ea 03 <80> 3c 32 00 0f 85 88 05 00 00 48 8b 10 48 8d 78 28 48 b9 00 00 00
RSP: 0018:ffff8880899d7800 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: dffffc0000000000 RDI: 0000000000000000
RBP: ffff8880899d7900 R08: ffff8880a5d50040 R09: ffffffff8acfe008
R10: ffffffff8acfe010 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000400 R14: ffff888087300180 R15: ffff8880899d79d0
FS:  0000000000b16880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa686ded000 CR3: 00000000928b9000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400