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BUG: KASAN: use-after-free in __read_once_size include/linux/compiler.h:199 [inline]
BUG: KASAN: use-after-free in list_empty include/linux/list.h:282 [inline]
BUG: KASAN: use-after-free in waitqueue_active include/linux/wait.h:126 [inline]
BUG: KASAN: use-after-free in wq_has_sleeper include/linux/wait.h:160 [inline]
BUG: KASAN: use-after-free in skwq_has_sleeper include/net/sock.h:2107 [inline]
BUG: KASAN: use-after-free in sock_def_write_space+0x613/0x640 net/core/sock.c:2816
Read of size 8 at addr ffff88801cf23af8 by task ksoftirqd/3/27

CPU: 3 PID: 27 Comm: ksoftirqd/3 Not tainted 5.6.0-rc6-syzkaller #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x188/0x20d lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0xd3/0x315 mm/kasan/report.c:374
 __kasan_report.cold+0x1a/0x32 mm/kasan/report.c:506
 kasan_report+0xe/0x20 mm/kasan/common.c:641
 __read_once_size include/linux/compiler.h:199 [inline]
 list_empty include/linux/list.h:282 [inline]
 waitqueue_active include/linux/wait.h:126 [inline]
 wq_has_sleeper include/linux/wait.h:160 [inline]
 skwq_has_sleeper include/net/sock.h:2107 [inline]
 sock_def_write_space+0x613/0x640 net/core/sock.c:2816
 sock_wfree+0x1cc/0x240 net/core/sock.c:1961
 skb_release_head_state+0xe2/0x250 net/core/skbuff.c:651
 skb_release_all+0x11/0x60 net/core/skbuff.c:662
 __kfree_skb net/core/skbuff.c:678 [inline]
 consume_skb net/core/skbuff.c:837 [inline]
 consume_skb+0xf3/0x400 net/core/skbuff.c:831
 __dev_kfree_skb_any+0x9c/0xc0 net/core/dev.c:3022
 dev_kfree_skb_any include/linux/netdevice.h:3692 [inline]
 e1000_unmap_and_free_tx_resource.isra.0+0x214/0x3a0 drivers/net/ethernet/intel/e1000/e1000_main.c:1963
 e1000_clean_tx_irq drivers/net/ethernet/intel/e1000/e1000_main.c:3854 [inline]
 e1000_clean+0x442/0x1b10 drivers/net/ethernet/intel/e1000/e1000_main.c:3796
 napi_poll net/core/dev.c:6571 [inline]
 net_rx_action+0x4c2/0x1070 net/core/dev.c:6639
 __do_softirq+0x26c/0x99d kernel/softirq.c:292
 run_ksoftirqd kernel/softirq.c:603 [inline]
 run_ksoftirqd+0x89/0x100 kernel/softirq.c:595
 smpboot_thread_fn+0x653/0x9e0 kernel/smpboot.c:165
 kthread+0x357/0x430 kernel/kthread.c:255
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352

Allocated by task 14228:
 save_stack+0x1b/0x80 mm/kasan/common.c:72
 set_track mm/kasan/common.c:80 [inline]
 __kasan_kmalloc mm/kasan/common.c:515 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:488
 slab_post_alloc_hook mm/slab.h:584 [inline]
 slab_alloc mm/slab.c:3320 [inline]
 kmem_cache_alloc+0x11b/0x730 mm/slab.c:3484
 sock_alloc_inode+0x18/0x1c0 net/socket.c:253
 alloc_inode+0x61/0x1e0 fs/inode.c:232
 new_inode_pseudo+0x14/0xe0 fs/inode.c:928
 sock_alloc+0x3c/0x260 net/socket.c:573
 __sock_create+0xba/0x730 net/socket.c:1397
 sock_create net/socket.c:1484 [inline]
 __sys_socket+0xef/0x200 net/socket.c:1526
 __do_sys_socket net/socket.c:1535 [inline]
 __se_sys_socket net/socket.c:1533 [inline]
 __ia32_sys_socket+0x6f/0xb0 net/socket.c:1533
 do_syscall_32_irqs_on arch/x86/entry/common.c:337 [inline]
 do_fast_syscall_32+0x270/0xe8f arch/x86/entry/common.c:408
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139

Freed by task 14238:
 save_stack+0x1b/0x80 mm/kasan/common.c:72
 set_track mm/kasan/common.c:80 [inline]
 kasan_set_free_info mm/kasan/common.c:337 [inline]
 __kasan_slab_free+0xf7/0x140 mm/kasan/common.c:476
 __cache_free mm/slab.c:3426 [inline]
 kmem_cache_free+0x7f/0x320 mm/slab.c:3694
 i_callback+0x3f/0x70 fs/inode.c:221
 rcu_do_batch kernel/rcu/tree.c:2186 [inline]
 rcu_core+0x5a4/0x12d0 kernel/rcu/tree.c:2410
 __do_softirq+0x26c/0x99d kernel/softirq.c:292

The buggy address belongs to the object at ffff88801cf23a80
 which belongs to the cache sock_inode_cache(17:syz1) of size 1216
The buggy address is located 120 bytes inside of
 1216-byte region [ffff88801cf23a80, ffff88801cf23f40)
The buggy address belongs to the page:
page:ffffea000073c8c0 refcount:1 mapcount:0 mapping:ffff888073b858c0 index:0xffff88801cf23ffd
flags: 0xfffe0000000200(slab)
raw: 00fffe0000000200 ffffea00007bc6c8 ffffea00007bdf48 ffff888073b858c0
raw: ffff88801cf23ffd ffff88801cf23000 0000000100000002 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff88801cf23980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88801cf23a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff88801cf23a80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                                ^
 ffff88801cf23b00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff88801cf23b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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