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BUG: KASAN: slab-out-of-bounds in ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:580 [inline]
BUG: KASAN: slab-out-of-bounds in ath9k_hif_usb_rx_cb+0xb49/0x1050 drivers/net/wireless/ath/ath9k/hif_usb.c:671
Read of size 4 at addr ffff8881ab1a403c by task kworker/0:1/12

CPU: 0 PID: 12 Comm: kworker/0:1 Not tainted 5.7.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events request_firmware_work_func
Call Trace:
 <IRQ>
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0xf6/0x16e lib/dump_stack.c:118
 print_address_description.constprop.0.cold+0xd3/0x415 mm/kasan/report.c:383
 __kasan_report mm/kasan/report.c:513 [inline]
 kasan_report.cold+0x37/0x7c mm/kasan/report.c:530
 ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:580 [inline]
 ath9k_hif_usb_rx_cb+0xb49/0x1050 drivers/net/wireless/ath/ath9k/hif_usb.c:671
 __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/0x6e0 kernel/time/timer.c:1404
 expire_timers kernel/time/timer.c:1449 [inline]
 __run_timers kernel/time/timer.c:1773 [inline]
 __run_timers kernel/time/timer.c:1740 [inline]
 run_timer_softirq+0x5e5/0x14c0 kernel/time/timer.c:1786
 __do_softirq+0x21e/0x996 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:1107
 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829
 </IRQ>
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:85 [inline]
RIP: 0010:console_unlock+0xa62/0xc90 kernel/printk/printk.c:2523
Code: 00 89 ee 48 c7 c7 60 c4 14 87 e8 69 b8 03 00 65 ff 0d ba 99 d8 7e e9 be f9 ff ff e8 58 3b 16 00 e8 43 94 1b 00 ff 74 24 30 9d <e9> 20 fe ff ff e8 44 3b 16 00 48 8d 7d 08 48 89 f8 48 c1 e8 03 42
RSP: 0018:ffff8881da21f668 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000000 RBX: 0000000000000200 RCX: 1ffffffff0fd4d4a
RDX: 1ffff1103b441427 RSI: 0000000000000000 RDI: ffff8881da20a138
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000001
R10: ffffffff893946a7 R11: fffffbfff12728d4 R12: ffffffff82ac9cc0
R13: ffffffff874f3bd0 R14: 000000000000004c R15: dffffc0000000000
 vprintk_emit+0x16d/0x3d0 kernel/printk/printk.c:2032
 dev_vprintk_emit+0x4f2/0x537 drivers/base/core.c:3883
 dev_printk_emit+0xba/0xf1 drivers/base/core.c:3894
 __dev_printk+0x1d1/0x1f9 drivers/base/core.c:3906
 _dev_err+0xd7/0x109 drivers/base/core.c:3949
 ath9k_htc_wait_for_target.isra.0.cold+0x31/0x40 drivers/net/wireless/ath/ath9k/htc_drv_init.c:91
 ath9k_htc_probe_device+0x1a9/0x1e60 drivers/net/wireless/ath/ath9k/htc_drv_init.c:952
 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:1218
 request_firmware_work_func+0x126/0x242 drivers/base/firmware_loader/main.c:1001
 process_one_work+0x965/0x1620 kernel/workqueue.c:2269
 worker_thread+0x96/0xe10 kernel/workqueue.c:2415
 kthread+0x352/0x460 kernel/kthread.c:291
 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351

Allocated by task 6246:
 save_stack+0x1b/0x40 mm/kasan/common.c:48
 set_track mm/kasan/common.c:56 [inline]
 __kasan_kmalloc mm/kasan/common.c:494 [inline]
 __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:467
 slab_post_alloc_hook mm/slab.h:586 [inline]
 slab_alloc_node mm/slub.c:2824 [inline]
 slab_alloc mm/slub.c:2832 [inline]
 kmem_cache_alloc+0xd8/0x300 mm/slub.c:2837
 getname_flags fs/namei.c:138 [inline]
 getname_flags+0xd2/0x5b0 fs/namei.c:128
 user_path_at_empty+0x2a/0x50 fs/namei.c:2646
 do_readlinkat+0xcd/0x300 fs/stat.c:419
 __do_sys_readlinkat fs/stat.c:446 [inline]
 __se_sys_readlinkat fs/stat.c:443 [inline]
 __x64_sys_readlinkat+0x93/0xf0 fs/stat.c:443
 do_syscall_64+0xb6/0x5a0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3

Freed by task 6246:
 save_stack+0x1b/0x40 mm/kasan/common.c:48
 set_track mm/kasan/common.c:56 [inline]
 kasan_set_free_info mm/kasan/common.c:316 [inline]
 __kasan_slab_free+0x117/0x160 mm/kasan/common.c:455
 slab_free_hook mm/slub.c:1474 [inline]
 slab_free_freelist_hook mm/slub.c:1507 [inline]
 slab_free mm/slub.c:3072 [inline]
 kmem_cache_free+0x9b/0x360 mm/slub.c:3088
 putname+0xe1/0x120 fs/namei.c:259
 filename_lookup+0x282/0x3e0 fs/namei.c:2376
 do_readlinkat+0xcd/0x300 fs/stat.c:419
 __do_sys_readlinkat fs/stat.c:446 [inline]
 __se_sys_readlinkat fs/stat.c:443 [inline]
 __x64_sys_readlinkat+0x93/0xf0 fs/stat.c:443
 do_syscall_64+0xb6/0x5a0 arch/x86/entry/common.c:295
 entry_SYSCALL_64_after_hwframe+0x49/0xb3

The buggy address belongs to the object at ffff8881ab1a3300
 which belongs to the cache names_cache of size 4096
The buggy address is located 3388 bytes inside of
 4096-byte region [ffff8881ab1a3300, ffff8881ab1a4300)
The buggy address belongs to the page:
page:ffffea0006ac6800 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 head:ffffea0006ac6800 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x200000000010200(slab|head)
raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881da11e000
raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881ab1a3f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881ab1a3f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8881ab1a4000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                        ^
 ffff8881ab1a4080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881ab1a4100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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