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BUG: KASAN: use-after-free in primary_event_id kernel/events/core.c:1316 [inline]
BUG: KASAN: use-after-free in perf_output_read_group kernel/events/core.c:5897 [inline]
BUG: KASAN: use-after-free in perf_output_read+0x1046/0x1090 kernel/events/core.c:5932
Read of size 8 at addr ffff888098373220 by task syz-executor.0/10367

CPU: 1 PID: 10367 Comm: syz-executor.0 Not tainted 4.14.298-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
Call Trace:
 __dump_stack lib/dump_stack.c:17 [inline]
 dump_stack+0x1b2/0x281 lib/dump_stack.c:58
 print_address_description.cold+0x54/0x1d3 mm/kasan/report.c:252
 kasan_report_error.cold+0x8a/0x191 mm/kasan/report.c:351
 kasan_report mm/kasan/report.c:409 [inline]
 __asan_report_load8_noabort+0x68/0x70 mm/kasan/report.c:430
 primary_event_id kernel/events/core.c:1316 [inline]
 perf_output_read_group kernel/events/core.c:5897 [inline]
 perf_output_read+0x1046/0x1090 kernel/events/core.c:5932
 perf_output_sample+0xa28/0x16f0 kernel/events/core.c:5974
 __perf_event_output kernel/events/core.c:6287 [inline]
 perf_event_output_forward+0xf8/0x1f0 kernel/events/core.c:6300
 __perf_event_overflow+0x113/0x310 kernel/events/core.c:7549
 perf_swevent_overflow kernel/events/core.c:7625 [inline]
 perf_swevent_event+0x299/0x460 kernel/events/core.c:7653
 do_perf_sw_event kernel/events/core.c:7766 [inline]
 ___perf_sw_event+0x2a1/0x480 kernel/events/core.c:7797
 __perf_sw_event+0x4f/0x100 kernel/events/core.c:7809
 perf_sw_event include/linux/perf_event.h:1046 [inline]
 __do_page_fault+0x692/0xad0 arch/x86/mm/fault.c:1483
 page_fault+0x25/0x50 arch/x86/entry/entry_64.S:1126

Allocated by task 0:
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:551
 __do_kmalloc_node mm/slab.c:3682 [inline]
 __kmalloc_node_track_caller+0x4c/0x70 mm/slab.c:3696
 __kmalloc_reserve net/core/skbuff.c:137 [inline]
 __alloc_skb+0x96/0x510 net/core/skbuff.c:205
 __napi_alloc_skb+0x57/0x2d0 net/core/skbuff.c:478
 napi_alloc_skb include/linux/skbuff.h:2721 [inline]
 page_to_skb+0x7b/0x820 drivers/net/virtio_net.c:323
 receive_mergeable drivers/net/virtio_net.c:723 [inline]
 receive_buf+0x1f71/0x4d70 drivers/net/virtio_net.c:828
 virtnet_receive drivers/net/virtio_net.c:1102 [inline]
 virtnet_poll+0x4b7/0x960 drivers/net/virtio_net.c:1193
 napi_poll net/core/dev.c:5604 [inline]
 net_rx_action+0x466/0xfd0 net/core/dev.c:5670
 __do_softirq+0x24d/0x9ff kernel/softirq.c:288

Freed by task 0:
 save_stack mm/kasan/kasan.c:447 [inline]
 set_track mm/kasan/kasan.c:459 [inline]
 kasan_slab_free+0xc3/0x1a0 mm/kasan/kasan.c:524
 __cache_free mm/slab.c:3496 [inline]
 kfree+0xc9/0x250 mm/slab.c:3815
 skb_free_head net/core/skbuff.c:563 [inline]
 skb_release_data+0x5f6/0x820 net/core/skbuff.c:583
 skb_release_all net/core/skbuff.c:640 [inline]
 __kfree_skb net/core/skbuff.c:654 [inline]
 kfree_skb_partial+0x75/0x90 net/core/skbuff.c:4830
 tcp_rcv_established+0x1650/0x1a50 net/ipv4/tcp_input.c:5576
 tcp_v4_do_rcv+0x675/0x800 net/ipv4/tcp_ipv4.c:1490
 tcp_v4_rcv+0x275c/0x3560 net/ipv4/tcp_ipv4.c:1764
 ip_local_deliver_finish+0x3f2/0xab0 net/ipv4/ip_input.c:216
 NF_HOOK include/linux/netfilter.h:250 [inline]
 ip_local_deliver+0x167/0x460 net/ipv4/ip_input.c:257
 dst_input include/net/dst.h:476 [inline]
 ip_rcv_finish+0x6e3/0x19f0 net/ipv4/ip_input.c:396
 NF_HOOK include/linux/netfilter.h:250 [inline]
 ip_rcv+0x8a7/0xf10 net/ipv4/ip_input.c:493
 __netif_receive_skb_core+0x15ee/0x2a30 net/core/dev.c:4474
 __netif_receive_skb+0x27/0x1a0 net/core/dev.c:4512
 netif_receive_skb_internal+0xd7/0x580 net/core/dev.c:4585
 napi_skb_finish net/core/dev.c:4947 [inline]
 napi_gro_receive+0x2e2/0x400 net/core/dev.c:4978
 receive_buf+0x9f2/0x4d70 drivers/net/virtio_net.c:856
 virtnet_receive drivers/net/virtio_net.c:1102 [inline]
 virtnet_poll+0x4b7/0x960 drivers/net/virtio_net.c:1193
 napi_poll net/core/dev.c:5604 [inline]
 net_rx_action+0x466/0xfd0 net/core/dev.c:5670
 __do_softirq+0x24d/0x9ff kernel/softirq.c:288

The buggy address belongs to the object at ffff888098373080
 which belongs to the cache kmalloc-512 of size 512
The buggy address is located 416 bytes inside of
 512-byte region [ffff888098373080, ffff888098373280)
The buggy address belongs to the page:
page:ffffea000260dcc0 count:1 mapcount:0 mapping:ffff888098373080 index:0xffff888098373a80
flags: 0xfff00000000100(slab)
raw: 00fff00000000100 ffff888098373080 ffff888098373a80 0000000100000004
raw: ffffea000260d0e0 ffffea000260dca0 ffff88813fe74940 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff888098373100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff888098373180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888098373200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                               ^
 ffff888098373280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff888098373300: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
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