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BUG: KASAN: slab-out-of-bounds in ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:622 [inline]
BUG: KASAN: slab-out-of-bounds in ath9k_hif_usb_rx_cb+0xe64/0xf90 drivers/net/wireless/ath/ath9k/hif_usb.c:666
Read of size 4 at addr ffff8881cb1ac0d0 by task kworker/1:1/21

CPU: 1 PID: 21 Comm: kworker/1:1 Not tainted 5.7.0-rc6-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+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
 ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:622 [inline]
 ath9k_hif_usb_rx_cb+0xe64/0xf90 drivers/net/wireless/ath/ath9k/hif_usb.c:666
 __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:arch_local_irq_restore arch/x86/include/asm/irqflags.h:85 [inline]
RIP: 0010:console_unlock+0xa6b/0xca0 kernel/printk/printk.c:2506
Code: 00 89 ee 48 c7 c7 20 d2 14 87 e8 50 cf 03 00 65 ff 0d 51 2f d8 7e e9 b5 f9 ff ff e8 4f 5f 16 00 e8 2a bc 1b 00 ff 74 24 30 9d <e9> 17 fe ff ff e8 3b 5f 16 00 48 8d 7d 08 48 89 f8 48 c1 e8 03 42
RSP: 0018:ffff8881da317a30 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000000200 RCX: 1ffffffff126c9bd
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8881da246b7c
RBP: 0000000000000000 R08: 0000000000000001 R09: fffffbfff126c8bd
R10: ffffffff893645e7 R11: fffffbfff126c8bc R12: ffffffff82abb150
R13: ffffffff874ee310 R14: 0000000000000042 R15: dffffc0000000000
 vprintk_emit+0x16d/0x3e0 kernel/printk/printk.c:2021
 vprintk_func+0x75/0x113 kernel/printk/printk_safe.c:385
 printk+0xba/0xed kernel/printk/printk.c:2081
 ath9k_htc_hw_init.cold+0x17/0x2a drivers/net/wireless/ath/ath9k/htc_hst.c:502
 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

Allocated by task 145:
 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_node include/linux/slab.h:578 [inline]
 kvmalloc_node+0x61/0xf0 mm/util.c:574
 kvmalloc include/linux/mm.h:757 [inline]
 seq_buf_alloc fs/seq_file.c:32 [inline]
 seq_read+0x7be/0xfd0 fs/seq_file.c:181
 kernfs_fop_read+0xe9/0x590 fs/kernfs/file.c:251
 __vfs_read+0x76/0x100 fs/read_write.c:426
 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

Freed by task 145:
 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
 kvfree+0x42/0x50 mm/util.c:603
 seq_release+0x4f/0x80 fs/seq_file.c:335
 kernfs_fop_release+0xf2/0x190 fs/kernfs/file.c:780
 __fput+0x33b/0x880 fs/file_table.c:280
 task_work_run+0xf4/0x1b0 kernel/task_work.c:123
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_usermode_loop+0x1d2/0x200 arch/x86/entry/common.c:165
 prepare_exit_to_usermode arch/x86/entry/common.c:196 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:279 [inline]
 do_syscall_64+0x4e0/0x5a0 arch/x86/entry/common.c:305
 entry_SYSCALL_64_after_hwframe+0x49/0xb3

The buggy address belongs to the object at ffff8881cb1ac000
 which belongs to the cache kmalloc-4k of size 4096
The buggy address is located 208 bytes inside of
 4096-byte region [ffff8881cb1ac000, ffff8881cb1ad000)
The buggy address belongs to the page:
page:ffffea00072c6a00 refcount:1 mapcount:0 mapping:000000003c55da06 index:0x0 head:ffffea00072c6a00 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x200000000010200(slab|head)
raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881da00c280
raw: 0000000000000000 0000000000040004 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected

Memory state around the buggy address:
 ffff8881cb1abf80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
 ffff8881cb1ac000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff8881cb1ac080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
                                                 ^
 ffff8881cb1ac100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
 ffff8881cb1ac180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
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