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: 8090 Comm: syz-executor219 Not tainted 4.19.172-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:dequeue_head syzkaller/managers/linux-4-19/kernel/net/sched/sch_fq_codel.c:126 [inline]
RIP: 0010:fq_codel_drop syzkaller/managers/linux-4-19/kernel/net/sched/sch_fq_codel.c:174 [inline]
RIP: 0010:fq_codel_enqueue+0x8ad/0x1100 syzkaller/managers/linux-4-19/kernel/net/sched/sch_fq_codel.c:236
Code: 79 bb cc fa 45 39 ec 0f 83 cb 00 00 00 e8 7b ba cc fa 48 8b 44 24 10 80 38 00 0f 85 69 06 00 00 49 8b 07 48 89 c2 48 c1 ea 03 <42> 80 3c 32 00 0f 85 3d 06 00 00 48 8b 10 48 8d 78 28 49 89 17 48
RSP: 0018:ffff8880974cf6e0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff86959ea5
RDX: 0000000000000000 RSI: ffffffff86959f45 RDI: 0000000000000004
RBP: ffff8880974cf8a0 R08: ffffffff8c65d018 R09: 0000000000000400
R10: 0000000000000004 R11: ffffffff8c65d01b R12: 0000000000000400
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88808cf40140
FS:  0000000001a2b300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000080 CR3: 00000000a9bf1000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __dev_xmit_skb syzkaller/managers/linux-4-19/kernel/net/core/dev.c:3494 [inline]
 __dev_queue_xmit+0x140a/0x2e00 syzkaller/managers/linux-4-19/kernel/net/core/dev.c:3807
 __bpf_tx_skb syzkaller/managers/linux-4-19/kernel/net/core/filter.c:2015 [inline]
 __bpf_redirect_common syzkaller/managers/linux-4-19/kernel/net/core/filter.c:2054 [inline]
 __bpf_redirect+0x746/0xbc0 syzkaller/managers/linux-4-19/kernel/net/core/filter.c:2061
 ____bpf_clone_redirect syzkaller/managers/linux-4-19/kernel/net/core/filter.c:2094 [inline]
 bpf_clone_redirect+0x2c0/0x430 syzkaller/managers/linux-4-19/kernel/net/core/filter.c:2066
 bpf_prog_cc75667d52cf7bb0+0x583/0x1000
Modules linked in:
---[ end trace 26d6a09a0f3bc910 ]---
RIP: 0010:dequeue_head syzkaller/managers/linux-4-19/kernel/net/sched/sch_fq_codel.c:126 [inline]
RIP: 0010:fq_codel_drop syzkaller/managers/linux-4-19/kernel/net/sched/sch_fq_codel.c:174 [inline]
RIP: 0010:fq_codel_enqueue+0x8ad/0x1100 syzkaller/managers/linux-4-19/kernel/net/sched/sch_fq_codel.c:236
Code: 79 bb cc fa 45 39 ec 0f 83 cb 00 00 00 e8 7b ba cc fa 48 8b 44 24 10 80 38 00 0f 85 69 06 00 00 49 8b 07 48 89 c2 48 c1 ea 03 <42> 80 3c 32 00 0f 85 3d 06 00 00 48 8b 10 48 8d 78 28 49 89 17 48
RSP: 0018:ffff8880974cf6e0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff86959ea5
RDX: 0000000000000000 RSI: ffffffff86959f45 RDI: 0000000000000004
RBP: ffff8880974cf8a0 R08: ffffffff8c65d018 R09: 0000000000000400
R10: 0000000000000004 R11: ffffffff8c65d01b R12: 0000000000000400
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff88808cf40140
FS:  0000000001a2b300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000080 CR3: 00000000a9bf1000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400