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BUG: KASAN: use-after-free in ____bpf_clone_redirect net/core/filter.c:1768 [inline]
BUG: KASAN: use-after-free in bpf_clone_redirect+0x2de/0x2f0 net/core/filter.c:1759
Read of size 8 at addr ffff888059be8250 by task syz-executor.3/16503

CPU: 1 PID: 16503 Comm: syz-executor.3 Not tainted 4.14.152 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x138/0x197 lib/dump_stack.c:53
 print_address_description.cold+0x7c/0x1dc mm/kasan/report.c:252
 kasan_report_error mm/kasan/report.c:351 [inline]
 kasan_report mm/kasan/report.c:409 [inline]
 kasan_report.cold+0xa9/0x2af mm/kasan/report.c:393
 __asan_report_load8_noabort+0x14/0x20 mm/kasan/report.c:430
 ____bpf_clone_redirect net/core/filter.c:1768 [inline]
 bpf_clone_redirect+0x2de/0x2f0 net/core/filter.c:1759
 bpf_prog_5dcdee4b6441ca99+0x213/0x1000

Allocated by task 0:
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59
 save_stack+0x45/0xd0 mm/kasan/kasan.c:447
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc mm/kasan/kasan.c:551 [inline]
 kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:529
 kasan_slab_alloc+0xf/0x20 mm/kasan/kasan.c:489
 kmem_cache_alloc+0x12e/0x780 mm/slab.c:3552
 skb_clone+0x129/0x320 net/core/skbuff.c:1282
 frame_get_tagged_skb net/hsr/hsr_forward.c:195 [inline]
 hsr_forward_do net/hsr/hsr_forward.c:283 [inline]
 hsr_forward_skb+0xf46/0x1940 net/hsr/hsr_forward.c:373
 send_hsr_supervision_frame+0x892/0xec0 net/hsr/hsr_device.c:319
 hsr_announce+0xf5/0x340 net/hsr/hsr_device.c:348
 call_timer_fn+0x161/0x670 kernel/time/timer.c:1279
 expire_timers kernel/time/timer.c:1318 [inline]
 __run_timers kernel/time/timer.c:1636 [inline]
 __run_timers kernel/time/timer.c:1604 [inline]
 run_timer_softirq+0x5b7/0x1520 kernel/time/timer.c:1649
 __do_softirq+0x244/0x9a0 kernel/softirq.c:288

Freed by task 7:
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:59
 save_stack+0x45/0xd0 mm/kasan/kasan.c:447
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_slab_free+0x75/0xc0 mm/kasan/kasan.c:524
 __cache_free mm/slab.c:3496 [inline]
 kmem_cache_free+0x83/0x2b0 mm/slab.c:3758
 kfree_skbmem net/core/skbuff.c:586 [inline]
 kfree_skbmem+0xac/0x120 net/core/skbuff.c:580
 __kfree_skb net/core/skbuff.c:646 [inline]
 kfree_skb+0xbd/0x340 net/core/skbuff.c:663
 __netif_receive_skb_core+0x45b/0x2ca0 net/core/dev.c:4484
 __netif_receive_skb+0x2c/0x1b0 net/core/dev.c:4515
 process_backlog+0x21f/0x730 net/core/dev.c:5197
 napi_poll net/core/dev.c:5598 [inline]
 net_rx_action+0x490/0xf80 net/core/dev.c:5664
 __do_softirq+0x244/0x9a0 kernel/softirq.c:288

The buggy address belongs to the object at ffff888059be81c0
 which belongs to the cache skbuff_head_cache of size 232
The buggy address is located 144 bytes inside of
 232-byte region [ffff888059be81c0, ffff888059be82a8)
The buggy address belongs to the page:
page:ffffea000166fa00 count:1 mapcount:0 mapping:ffff888059be8080 index:0xffff888059be8bc0
flags: 0x1fffc0000000100(slab)
raw: 01fffc0000000100 ffff888059be8080 ffff888059be8bc0 0000000100000009
raw: ffffea0002a4a0e0 ffffea000189e920 ffff88821b75f3c0 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888059be8100: fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc
 ffff888059be8180: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
>ffff888059be8200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                 ^
 ffff888059be8280: fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc
 ffff888059be8300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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