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BUG: KASAN: use-after-free in htc_process_conn_rsp drivers/net/wireless/ath/ath9k/htc_hst.c:131 [inline]
BUG: KASAN: use-after-free in ath9k_htc_rx_msg+0xa25/0xaf0 drivers/net/wireless/ath/ath9k/htc_hst.c:443
Write of size 2 at addr ffff8881da3f97f0 by task syz-executor.0/12487

CPU: 0 PID: 12487 Comm: syz-executor.0 Not tainted 5.7.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xef/0x16e lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0xd3/0x415 mm/kasan/report.c:382
 __kasan_report.cold+0x37/0x7d mm/kasan/report.c:511
 kasan_report+0x33/0x50 mm/kasan/common.c:625
 htc_process_conn_rsp drivers/net/wireless/ath/ath9k/htc_hst.c:131 [inline]
 ath9k_htc_rx_msg+0xa25/0xaf0 drivers/net/wireless/ath/ath9k/htc_hst.c:443
 ath9k_hif_usb_reg_in_cb+0x1c0/0x630 drivers/net/wireless/ath/ath9k/hif_usb.c:718
 __usb_hcd_giveback_urb+0x29a/0x550 drivers/usb/core/hcd.c:1650
 usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1716
 dummy_timer+0x125e/0x32b4 drivers/usb/gadget/udc/dummy_hcd.c:1967
 call_timer_fn+0x1ac/0x700 kernel/time/timer.c:1405
 expire_timers kernel/time/timer.c:1450 [inline]
 __run_timers kernel/time/timer.c:1774 [inline]
 __run_timers kernel/time/timer.c:1741 [inline]
 run_timer_softirq+0x5f9/0x1500 kernel/time/timer.c:1787
 __do_softirq+0x21e/0x9aa kernel/softirq.c:292
 invoke_softirq kernel/softirq.c:373 [inline]
 irq_exit+0x178/0x1a0 kernel/softirq.c:413
 exiting_irq arch/x86/include/asm/apic.h:546 [inline]
 smp_apic_timer_interrupt+0x141/0x540 arch/x86/kernel/apic/apic.c:1140
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:__alloc_pages_nodemask+0x1e3/0x7a0 mm/page_alloc.c:4809
Code: 49 c1 e9 03 45 0f b6 0c 09 48 89 f9 83 e1 07 83 c1 03 44 38 c9 7c 09 45 84 c9 0f 85 f9 04 00 00 41 3b 70 08 0f 82 5c 03 00 00 <48> 89 c1 48 89 44 24 60 48 ba 00 00 00 00 00 fc ff df 48 c1 e9 03
RSP: 0018:ffff8881c392f3d0 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13
RAX: ffff88821fffb500 RBX: 1ffff11038725e7e RCX: 0000000000000003
RDX: 0000000000000000 RSI: 0000000000000003 RDI: ffff88821fffb508
RBP: 0000000000100dca R08: ffff88821fffb500 R09: 0000000000000000
R10: ffffffff87e88c47 R11: fffffbfff0fd1188 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000100dca
 alloc_pages_vma+0x1b0/0x3e0 mm/mempolicy.c:2258
 alloc_zeroed_user_highpage_movable include/linux/highmem.h:208 [inline]
 wp_page_copy+0xf07/0x1fd0 mm/memory.c:2657
 do_wp_page+0x2cd/0x1af0 mm/memory.c:2982
 handle_pte_fault mm/memory.c:4231 [inline]
 __handle_mm_fault+0x16e5/0x2da0 mm/memory.c:4345
 handle_mm_fault+0x2ec/0x8d0 mm/memory.c:4382
 do_user_addr_fault arch/x86/mm/fault.c:1464 [inline]
 do_page_fault+0x51e/0x127d arch/x86/mm/fault.c:1535
 page_fault+0x34/0x40 arch/x86/entry/entry_64.S:1203
RIP: 0010:copy_user_enhanced_fast_string+0xe/0x30 arch/x86/lib/copy_user_64.S:205
Code: 89 d1 c1 e9 03 83 e2 07 f3 48 a5 89 d1 f3 a4 31 c0 0f 1f 00 c3 0f 1f 80 00 00 00 00 0f 1f 00 83 fa 40 0f 82 70 ff ff ff 89 d1 <f3> a4 31 c0 0f 1f 00 c3 66 2e 0f 1f 84 00 00 00 00 00 89 d1 f3 a4
RSP: 0018:ffff8881c392f9f0 EFLAGS: 00010206
RAX: 0000000000000001 RBX: 0000000000001000 RCX: 0000000000000200
RDX: 0000000000001000 RSI: ffff8881a550fe00 RDI: 00000000204f8000
RBP: 00000000204f7200 R08: ffffed1034aa2000 R09: 0000000000000000
R10: ffff8881a550ffff R11: ffffed1034aa1fff R12: ffff8881a550f000
R13: 00000000204f8200 R14: 00007ffffffff000 R15: 0000000000000000
 copy_user_generic arch/x86/include/asm/uaccess_64.h:37 [inline]
 raw_copy_to_user arch/x86/include/asm/uaccess_64.h:74 [inline]
 copyout+0x107/0x140 lib/iov_iter.c:142
 copy_page_to_iter_iovec lib/iov_iter.c:211 [inline]
 copy_page_to_iter+0x447/0xed0 lib/iov_iter.c:920
 generic_file_buffered_read mm/filemap.c:2129 [inline]
 generic_file_read_iter+0xfef/0x2a20 mm/filemap.c:2309
 ext4_file_read_iter fs/ext4/file.c:131 [inline]
 ext4_file_read_iter+0x181/0x430 fs/ext4/file.c:114
 call_read_iter include/linux/fs.h:1901 [inline]
 new_sync_read+0x41e/0x6d0 fs/read_write.c:415
 __vfs_read+0xc9/0x100 fs/read_write.c:428
 vfs_read+0x1f0/0x420 fs/read_write.c:462
 ksys_read+0x12d/0x250 fs/read_write.c:588
 do_syscall_64+0xb6/0x5a0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3
RIP: 0033:0x45ca69
Code: 0d b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 db b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f94acf75c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00000000004faf40 RCX: 000000000045ca69
RDX: 00000000ffffffad RSI: 0000000020003200 RDI: 0000000000000008
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 0000000000000883 R14: 00000000004cb5ea R15: 00007f94acf766d4

Allocated by task 150:
 save_stack+0x1b/0x40 mm/kasan/common.c:49
 set_track mm/kasan/common.c:57 [inline]
 __kasan_kmalloc mm/kasan/common.c:495 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:468
 kmalloc include/linux/slab.h:560 [inline]
 sk_prot_alloc+0x1f6/0x2c0 net/core/sock.c:1604
 sk_alloc+0x36/0x840 net/core/sock.c:1658
 __netlink_create+0x63/0x300 net/netlink/af_netlink.c:629
 netlink_create+0x3a1/0x5d0 net/netlink/af_netlink.c:692
 __sock_create+0x3d1/0x740 net/socket.c:1433
 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]
 __x64_sys_socket+0x6f/0xb0 net/socket.c:1533
 do_syscall_64+0xb6/0x5a0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3

Freed by task 0:
 save_stack+0x1b/0x40 mm/kasan/common.c:49
 set_track mm/kasan/common.c:57 [inline]
 kasan_set_free_info mm/kasan/common.c:317 [inline]
 __kasan_slab_free+0x117/0x160 mm/kasan/common.c:456
 slab_free_hook mm/slub.c:1455 [inline]
 slab_free_freelist_hook mm/slub.c:1488 [inline]
 slab_free mm/slub.c:3045 [inline]
 kfree+0xd5/0x300 mm/slub.c:4026
 sk_prot_free net/core/sock.c:1641 [inline]
 __sk_destruct+0x545/0x740 net/core/sock.c:1725
 sk_destruct+0xc6/0x100 net/core/sock.c:1740
 __sk_free+0xef/0x3d0 net/core/sock.c:1751
 sk_free+0x78/0xa0 net/core/sock.c:1762
 deferred_put_nlk_sk+0x151/0x2e0 net/netlink/af_netlink.c:729
 rcu_do_batch kernel/rcu/tree.c:2206 [inline]
 rcu_core+0x5ae/0x1ba0 kernel/rcu/tree.c:2433
 __do_softirq+0x21e/0x9aa kernel/softirq.c:292

The buggy address belongs to the object at ffff8881da3f9000
 which belongs to the cache kmalloc-2k of size 2048
The buggy address is located 2032 bytes inside of
 2048-byte region [ffff8881da3f9000, ffff8881da3f9800)
The buggy address belongs to the page:
page:ffffea000768fe00 refcount:1 mapcount:0 mapping:000000000e29cedf index:0x0 head:ffffea000768fe00 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x200000000010200(slab|head)
raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881da00c000
raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881da3f9680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881da3f9700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8881da3f9780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                             ^
 ffff8881da3f9800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881da3f9880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
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