rtlwifi: Loading alternative firmware rtlwifi/rtl8192cufw.bin
rtlwifi: Selected firmware is not available
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BUG: KASAN: use-after-free in rtl_fw_do_work.cold+0x68/0x6a drivers/net/wireless/realtek/rtlwifi/core.c:93
Write of size 4 at addr ffff88814688ff50 by task kworker/1:8/7523
CPU: 1 PID: 7523 Comm: kworker/1:8 Not tainted 5.10.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events request_firmware_work_func
Call Trace:
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x107/0x163 lib/dump_stack.c:118
print_address_description.constprop.0.cold+0xae/0x4c8 mm/kasan/report.c:385
__kasan_report mm/kasan/report.c:545 [inline]
kasan_report.cold+0x1f/0x37 mm/kasan/report.c:562
rtl_fw_do_work.cold+0x68/0x6a drivers/net/wireless/realtek/rtlwifi/core.c:93
request_firmware_work_func+0x12c/0x230 drivers/base/firmware_loader/main.c:1079
process_one_work+0x933/0x1520 kernel/workqueue.c:2272
worker_thread+0x64c/0x1120 kernel/workqueue.c:2418
kthread+0x38c/0x460 kernel/kthread.c:292
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:296
The buggy address belongs to the page:
page:00000000e9105a92 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x14688f
flags: 0x200000000000000()
raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000
raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff88814688fe00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff88814688fe80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88814688ff00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff88814688ff80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff888146890000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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