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BUG: KASAN: use-after-free in ath9k_htc_txcompletion_cb+0x285/0x2b0 drivers/net/wireless/ath/ath9k/htc_hst.c:341
Read of size 8 at addr ffff8881d26a5ac8 by task kworker/1:5/3182
CPU: 1 PID: 3182 Comm: kworker/1:5 Not tainted 5.7.0-rc5-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: usb_hub_wq hub_event
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0xef/0x16e lib/dump_stack.c:118
print_address_description.constprop.0.cold+0xd3/0x314 mm/kasan/report.c:382
__kasan_report.cold+0x37/0x92 mm/kasan/report.c:511
kasan_report+0x33/0x50 mm/kasan/common.c:625
ath9k_htc_txcompletion_cb+0x285/0x2b0 drivers/net/wireless/ath/ath9k/htc_hst.c:341
hif_usb_regout_cb+0x115/0x1c0 drivers/net/wireless/ath/ath9k/hif_usb.c:90
__usb_hcd_giveback_urb+0x1f2/0x470 drivers/usb/core/hcd.c:1648
usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1713
dummy_timer+0x125e/0x32b4 drivers/usb/gadget/udc/dummy_hcd.c:1966
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
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:85 [inline]
RIP: 0010:console_unlock+0xbb4/0xca0 kernel/printk/printk.c:2502
Code: 0d fe ff ff e8 1d 5e 16 00 48 8b bc 24 80 00 00 00 e8 50 dc ff ff e9 f9 fa ff ff e8 06 5e 16 00 e8 e1 b9 1b 00 ff 74 24 30 9d e5 fa ff ff e8 12 cd 3f 00 e9 93 f6 ff ff e8 18 cd 3f 00 e9 4d
RSP: 0018:ffff8881ab9b7388 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000000200 RCX: 1ffffffff126ffea
RDX: 0000000000000000 RSI: ffff8881cf126bd0 RDI: ffff8881cf126b7c
RBP: 0000000000000001 R08: 0000000000000001 R09: fffffbfff126c8c6
R10: ffffffff8936462f R11: fffffbfff126c8c5 R12: ffffffff82aba0b0
R13: ffffffff874ee290 R14: 000000000000007c R15: dffffc0000000000
vprintk_emit+0x16d/0x3e0 kernel/printk/printk.c:2021
dev_vprintk_emit+0x4fc/0x541 drivers/base/core.c:3774
dev_printk_emit+0xba/0xf1 drivers/base/core.c:3785
__dev_printk+0x1db/0x203 drivers/base/core.c:3797
_dev_warn+0xd7/0x109 drivers/base/core.c:3841
usb_parse_endpoint drivers/usb/core/config.c:296 [inline]
usb_parse_interface drivers/usb/core/config.c:582 [inline]
usb_parse_configuration drivers/usb/core/config.c:795 [inline]
usb_get_configuration.cold+0x127f/0x157f drivers/usb/core/config.c:944
usb_enumerate_device drivers/usb/core/hub.c:2386 [inline]
usb_new_device+0x42c/0x740 drivers/usb/core/hub.c:2522
hub_port_connect drivers/usb/core/hub.c:5207 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5347 [inline]
port_event drivers/usb/core/hub.c:5493 [inline]
hub_event+0x226d/0x43c0 drivers/usb/core/hub.c:5575
process_one_work+0x965/0x1630 kernel/workqueue.c:2268
worker_thread+0x96/0xe20 kernel/workqueue.c:2414
kthread+0x326/0x430 kernel/kthread.c:268
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351
Allocated by task 164:
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
slab_post_alloc_hook mm/slab.h:586 [inline]
slab_alloc_node mm/slub.c:2797 [inline]
kmem_cache_alloc_node+0xdc/0x330 mm/slub.c:2833
__alloc_skb+0xba/0x5a0 net/core/skbuff.c:198
alloc_skb include/linux/skbuff.h:1083 [inline]
htc_connect_service+0x2cc/0x840 drivers/net/wireless/ath/ath9k/htc_hst.c:257
ath9k_wmi_connect+0xd2/0x1a0 drivers/net/wireless/ath/ath9k/wmi.c:265
ath9k_init_htc_services.constprop.0+0xb4/0x650 drivers/net/wireless/ath/ath9k/htc_drv_init.c:146
ath9k_htc_probe_device+0x25a/0x1da0 drivers/net/wireless/ath/ath9k/htc_drv_init.c:959
ath9k_htc_hw_init+0x31/0x60 drivers/net/wireless/ath/ath9k/htc_hst.c:501
ath9k_hif_usb_firmware_cb+0x274/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1187
request_firmware_work_func+0x126/0x242 drivers/base/firmware_loader/main.c:1005
process_one_work+0x965/0x1630 kernel/workqueue.c:2268
worker_thread+0x96/0xe20 kernel/workqueue.c:2414
kthread+0x326/0x430 kernel/kthread.c:268
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351
Freed by task 164:
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]
kmem_cache_free+0x9b/0x360 mm/slub.c:3061
kfree_skbmem net/core/skbuff.c:622 [inline]
kfree_skbmem+0xef/0x1b0 net/core/skbuff.c:616
__kfree_skb net/core/skbuff.c:679 [inline]
kfree_skb net/core/skbuff.c:696 [inline]
kfree_skb+0x102/0x3d0 net/core/skbuff.c:690
htc_connect_service.cold+0xa9/0x109 drivers/net/wireless/ath/ath9k/htc_hst.c:282
ath9k_wmi_connect+0xd2/0x1a0 drivers/net/wireless/ath/ath9k/wmi.c:265
ath9k_init_htc_services.constprop.0+0xb4/0x650 drivers/net/wireless/ath/ath9k/htc_drv_init.c:146
ath9k_htc_probe_device+0x25a/0x1da0 drivers/net/wireless/ath/ath9k/htc_drv_init.c:959
ath9k_htc_hw_init+0x31/0x60 drivers/net/wireless/ath/ath9k/htc_hst.c:501
ath9k_hif_usb_firmware_cb+0x274/0x510 drivers/net/wireless/ath/ath9k/hif_usb.c:1187
request_firmware_work_func+0x126/0x242 drivers/base/firmware_loader/main.c:1005
process_one_work+0x965/0x1630 kernel/workqueue.c:2268
worker_thread+0x96/0xe20 kernel/workqueue.c:2414
kthread+0x326/0x430 kernel/kthread.c:268
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351
The buggy address belongs to the object at ffff8881d26a5a00
which belongs to the cache skbuff_head_cache of size 224
The buggy address is located 200 bytes inside of
224-byte region [ffff8881d26a5a00, ffff8881d26a5ae0)
The buggy address belongs to the page:
page:ffffea000749a940 refcount:1 mapcount:0 mapping:00000000088e9739 index:0x0
flags: 0x200000000000200(slab)
raw: 0200000000000200 dead000000000100 dead000000000122 ffff8881da175400
raw: 0000000000000000 00000000000c000c 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8881d26a5980: fb fb fb fb fc fc fc fc fc fc fc fc fc fc fc fc
ffff8881d26a5a00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8881d26a5a80: fb fb fb fb fb fb fb fb fb fb fb fb fc fc fc fc
^
ffff8881d26a5b00: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
ffff8881d26a5b80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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