dev_remove_pack: ffff8801d8e87600 not found
==================================================================
BUG: KASAN: use-after-free in fanout_demux_rollover+0x49b/0x4d0 net/packet/af_packet.c:1387 at addr ffff8801d8e875b8
Read of size 8 by task syz-executor1/3302
CPU: 0 PID: 3302 Comm: syz-executor1 Not tainted 4.9.49-g5316da5 #45
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801db2077e0 ffffffff81d92f89 ffff8801da002000 ffff8801d8e86e80
 ffff8801d8e87680 ffffed003b1d0eb7 ffff8801d8e875b8 ffff8801db207808
 ffffffff8153cbcc ffffed003b1d0eb7 ffff8801da002000 0000000000000000
Call Trace:
 <IRQ> [  187.694789]  [<ffffffff81d92f89>] __dump_stack lib/dump_stack.c:15 [inline]
 <IRQ> [  187.694789]  [<ffffffff81d92f89>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8153cbcc>] kasan_object_err+0x1c/0x70 mm/kasan/report.c:160
 [<ffffffff8153ce8c>] print_address_description mm/kasan/report.c:198 [inline]
 [<ffffffff8153ce8c>] kasan_report_error mm/kasan/report.c:287 [inline]
 [<ffffffff8153ce8c>] kasan_report.part.1+0x21c/0x500 mm/kasan/report.c:309
 [<ffffffff8153d229>] kasan_report mm/kasan/report.c:330 [inline]
 [<ffffffff8153d229>] __asan_report_load8_noabort+0x29/0x30 mm/kasan/report.c:330
 [<ffffffff8354643b>] fanout_demux_rollover+0x49b/0x4d0 net/packet/af_packet.c:1387
 [<ffffffff8354d0a6>] packet_rcv_fanout+0x3e6/0x620 net/packet/af_packet.c:1473
 [<ffffffff82f34397>] deliver_skb net/core/dev.c:1834 [inline]
 [<ffffffff82f34397>] deliver_ptype_list_skb net/core/dev.c:1849 [inline]
 [<ffffffff82f34397>] __netif_receive_skb_core+0x887/0x29e0 net/core/dev.c:4220
 [<ffffffff82f3654b>] __netif_receive_skb+0x5b/0x1c0 net/core/dev.c:4275
 [<ffffffff82f3ac6f>] netif_receive_skb_internal+0xff/0x390 net/core/dev.c:4303
 [<ffffffff82f3eccb>] napi_skb_finish net/core/dev.c:4661 [inline]
 [<ffffffff82f3eccb>] napi_gro_receive+0x1fb/0x400 net/core/dev.c:4691
 [<ffffffff8271d4dc>] receive_buf drivers/net/virtio_net.c:508 [inline]
 [<ffffffff8271d4dc>] virtnet_receive+0xe1c/0x1cf0 drivers/net/virtio_net.c:723
 [<ffffffff8271e3d6>] virtnet_poll+0x26/0x140 drivers/net/virtio_net.c:741
 [<ffffffff82f3c976>] napi_poll net/core/dev.c:5197 [inline]
 [<ffffffff82f3c976>] net_rx_action+0x396/0xe00 net/core/dev.c:5262
 [<ffffffff838adc1d>] __do_softirq+0x22d/0x964 kernel/softirq.c:284
 [<ffffffff81147985>] invoke_softirq kernel/softirq.c:364 [inline]
 [<ffffffff81147985>] irq_exit+0x165/0x190 kernel/softirq.c:405
 [<ffffffff838ad397>] exiting_irq arch/x86/include/asm/apic.h:659 [inline]
 [<ffffffff838ad397>] do_IRQ+0x107/0x1b0 arch/x86/kernel/irq.c:251
 [<ffffffff838ab74c>] common_interrupt+0x8c/0x8c arch/x86/entry/entry_64.S:520
 <EOI> [  187.918112]  [<ffffffff81db0cd5>] ? memcmp+0x95/0x160 lib/string.c:768
 [<ffffffff81e41ff2>] find_stack lib/stackdepot.c:176 [inline]
 [<ffffffff81e41ff2>] depot_save_stack+0x122/0x4a0 lib/stackdepot.c:225
 [<ffffffff8153bf13>] save_stack+0xa3/0xd0 mm/kasan/kasan.c:501
 [<ffffffff8153c13d>] set_track mm/kasan/kasan.c:507 [inline]
 [<ffffffff8153c13d>] kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598
 [<ffffffff8153c712>] kasan_slab_alloc+0x12/0x20 mm/kasan/kasan.c:537
 [<ffffffff81537f1a>] slab_post_alloc_hook mm/slab.h:417 [inline]
 [<ffffffff81537f1a>] slab_alloc_node mm/slub.c:2715 [inline]
 [<ffffffff81537f1a>] slab_alloc mm/slub.c:2723 [inline]
 [<ffffffff81537f1a>] kmem_cache_alloc+0xba/0x290 mm/slub.c:2728
 [<ffffffff814f568e>] anon_vma_chain_alloc mm/rmap.c:125 [inline]
 [<ffffffff814f568e>] anon_vma_clone+0xde/0x4a0 mm/rmap.c:266
 [<ffffffff814f5ad7>] anon_vma_fork+0x87/0x4b0 mm/rmap.c:329
 [<ffffffff8112e0f6>] dup_mmap kernel/fork.c:616 [inline]
 [<ffffffff8112e0f6>] dup_mm kernel/fork.c:1144 [inline]
 [<ffffffff8112e0f6>] copy_mm kernel/fork.c:1198 [inline]
 [<ffffffff8112e0f6>] copy_process.part.51+0x4506/0x5d40 kernel/fork.c:1664
 [<ffffffff8112fdc0>] copy_process kernel/fork.c:1491 [inline]
 [<ffffffff8112fdc0>] _do_fork+0x1c0/0xd70 kernel/fork.c:1949
 [<ffffffff81130a47>] SYSC_clone kernel/fork.c:2059 [inline]
 [<ffffffff81130a47>] SyS_clone+0x37/0x50 kernel/fork.c:2053
 [<ffffffff81006527>] do_syscall_64+0x197/0x490 arch/x86/entry/common.c:280
 [<ffffffff838aae4d>] entry_SYSCALL64_slow_path+0x25/0x25
Object at ffff8801d8e86e80, in cache kmalloc-2048 size: 2048
Allocated:
PID = 11180
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57
 save_stack+0x43/0xd0 mm/kasan/kasan.c:495
 set_track mm/kasan/kasan.c:507 [inline]
 kasan_kmalloc+0xad/0xe0 mm/kasan/kasan.c:598
 __kmalloc+0x11d/0x310 mm/slub.c:3741
 kmalloc include/linux/slab.h:495 [inline]
 sk_prot_alloc+0x101/0x2a0 net/core/sock.c:1338
 sk_alloc+0x3a/0x3a0 net/core/sock.c:1394
 packet_create+0xf0/0x8e0 net/packet/af_packet.c:3205
 __sock_create+0x3ab/0x640 net/socket.c:1182
 sock_create net/socket.c:1222 [inline]
 SYSC_socket net/socket.c:1252 [inline]
 SyS_socket+0xf0/0x1b0 net/socket.c:1232
 entry_SYSCALL_64_fastpath+0x23/0xc6
Freed:
PID = 11180
 save_stack_trace+0x16/0x20 arch/x86/kernel/stacktrace.c:57
 save_stack+0x43/0xd0 mm/kasan/kasan.c:495
 set_track mm/kasan/kasan.c:507 [inline]
 kasan_slab_free+0x73/0xc0 mm/kasan/kasan.c:571
 slab_free_hook mm/slub.c:1355 [inline]
 slab_free_freelist_hook mm/slub.c:1377 [inline]
 slab_free mm/slub.c:2958 [inline]
 kfree+0xf0/0x2f0 mm/slub.c:3878
 sk_prot_free net/core/sock.c:1377 [inline]
 __sk_destruct+0x47f/0x570 net/core/sock.c:1455
 sk_destruct+0x47/0x80 net/core/sock.c:1463
 __sk_free+0x57/0x230 net/core/sock.c:1471
 sk_free+0x23/0x30 net/core/sock.c:1482
 sock_put include/net/sock.h:1592 [inline]
 packet_release+0x732/0xa20 net/packet/af_packet.c:3041
 sock_release+0x8d/0x1e0 net/socket.c:599
 sock_close+0x16/0x20 net/socket.c:1046
 __fput+0x28c/0x6e0 fs/file_table.c:208
 ____fput+0x15/0x20 fs/file_table.c:244
 task_work_run+0x115/0x190 kernel/task_work.c:116
 exit_task_work include/linux/task_work.h:21 [inline]
 do_exit+0x82e/0x2a50 kernel/exit.c:833
 do_group_exit+0x108/0x320 kernel/exit.c:937
 get_signal+0x55c/0x1600 kernel/signal.c:2315
 do_signal+0x87/0x1960 arch/x86/kernel/signal.c:807
 exit_to_usermode_loop+0xe5/0x130 arch/x86/entry/common.c:156
 prepare_exit_to_usermode arch/x86/entry/common.c:190 [inline]
 syscall_return_slowpath+0x1a0/0x1e0 arch/x86/entry/common.c:259
 entry_SYSCALL_64_fastpath+0xc4/0xc6
Memory state around the buggy address:
 ffff8801d8e87480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8801d8e87500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8801d8e87580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                        ^
 ffff8801d8e87600: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8801d8e87680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
==================================================================
BUG: KASAN: use-after-free in fanout_demux_rollover+0x4bc/0x4d0 net/packet/af_packet.c:1387 at addr ffff8801cae74a80
Read of size 4 by task syz-executor1/3302
CPU: 0 PID: 3302 Comm: syz-executor1 Tainted: G    B           4.9.49-g5316da5 #45
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
 ffff8801db2077e0 ffffffff81d92f89 ffff8801da001640 ffff8801cae74a80
 ffff8801cae74b00 ffffed00395ce950 ffff8801cae74a80 ffff8801db207808
 ffffffff8153cbcc ffffed00395ce950 ffff8801da001640 0000000000000000
Call Trace:
 <IRQ> [  188.484039]  [<ffffffff81d92f89>] __dump_stack lib/dump_stack.c:15 [inline]
 <IRQ> [  188.484039]  [<ffffffff81d92f89>] dump_stack+0xc1/0x128 lib/dump_stack.c:51
 [<ffffffff8153cbcc>] kasan_object_err+0x1c/0x70 mm/kasan/report.c:160
 [<ffffffff8153ce8c>] print_address_description mm/kasan/report.c:198 [inline]
 [<ffffffff8153ce8c>] kasan_report_error mm/kasan/report.c:287 [inline]
 [<ffffffff8153ce8c>] kasan_report.part.1+0x21c/0x500 mm/kasan/report.c:309
 [<ffffffff8153d1f9>] kasan_report mm/kasan/report.c:329 [inline]
 [<ffffffff8153d1f9>] __asan_report_load4_noabort+0x29/0x30 mm/kasan/report.c:329
 [<ffffffff8354645c>] fanout_demux_rollover+0x4bc/0x4d0 net/packet/af_packet.c:1387
 [<ffffffff8354d0a6>] packet_rcv_fanout+0x3e6/0x620 net/packet/af_packet.c:1473
 [<ffffffff82f34397>] deliver_skb net/core/dev.c:1834 [inline]
 [<ffffffff82f34397>] deliver_ptype_list_skb net/core/dev.c:1849 [inline]
 [<ffffffff82f34397>] __netif_receive_skb_core+0x887/0x29e0 net/core/dev.c:4220
 [<ffffffff82f3654b>] __netif_receive_skb+0x5b/0x1c0 net/core/dev.c:4275
 [<ffffffff82f3ac6f>] netif_receive_skb_internal+0xff/0x390 net/core/dev.c:4303
 [<ffffffff82f3eccb>] napi_skb_finish net/core/dev.c:4661 [inline]
 [<ffffffff82f3eccb>] napi_gro_receive+0x1fb/0x400 net/core/dev.c:4691
 [<ffffffff8271d4dc>] receive_buf drivers/net/virtio_net.c:508 [inline]
 [<ffffffff8271d4dc>] virtnet_receive+0xe1c/0x1cf0 drivers/net/virtio_net.c:723