syzbot

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BUG: KASAN: use-after-free in cfg80211_shutdown_all_interfaces+0x1ed/0x200 net/wireless/core.c:275
Read of size 8 at addr ffff88811e6a8d68 by task kworker/1:6/9040

CPU: 1 UID: 0 PID: 9040 Comm: kworker/1:6 Not tainted 6.15.0-rc1-syzkaller-00082-gf41f7b3d9daf #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
Workqueue: events cfg80211_rfkill_block_work
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
 print_address_description mm/kasan/report.c:408 [inline]
 print_report+0xc3/0x670 mm/kasan/report.c:521
 kasan_report+0xe0/0x110 mm/kasan/report.c:634
 cfg80211_shutdown_all_interfaces+0x1ed/0x200 net/wireless/core.c:275
 cfg80211_rfkill_set_block net/wireless/core.c:307 [inline]
 cfg80211_rfkill_set_block net/wireless/core.c:299 [inline]
 cfg80211_rfkill_block_work+0x1e/0x30 net/wireless/core.c:319
 process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400
 kthread+0x3c2/0x780 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>

The buggy address belongs to the physical page:
page: refcount:0 mapcount:0 mapping:0000000000000000 index:0xffff88811e6a8000 pfn:0x11e6a8
flags: 0x200000000000000(node=0|zone=2)
raw: 0200000000000000 ffffea00043fde08 ffff8881f593dbf0 0000000000000000
raw: ffff88811e6a8000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x40dc0(GFP_KERNEL|__GFP_ZERO|__GFP_COMP), pid 5217, tgid 5217 (kworker/1:2), ts 1275138208894, free_ts 1276615379646
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x181/0x1b0 mm/page_alloc.c:1717
 prep_new_page mm/page_alloc.c:1725 [inline]
 get_page_from_freelist+0x10ca/0x2fd0 mm/page_alloc.c:3652
 __alloc_frozen_pages_noprof+0x25c/0x2160 mm/page_alloc.c:4934
 __alloc_pages_noprof+0xb/0x1b0 mm/page_alloc.c:4968
 __alloc_pages_node_noprof include/linux/gfp.h:284 [inline]
 alloc_pages_node_noprof include/linux/gfp.h:311 [inline]
 ___kmalloc_large_node+0x82/0x1e0 mm/slub.c:4275
 __kmalloc_large_node_noprof+0x1c/0x70 mm/slub.c:4303
 __do_kmalloc_node mm/slub.c:4319 [inline]
 __kmalloc_noprof.cold+0xc/0x61 mm/slub.c:4343
 kmalloc_noprof include/linux/slab.h:909 [inline]
 kzalloc_noprof include/linux/slab.h:1039 [inline]
 wiphy_new_nm+0x701/0x2120 net/wireless/core.c:470
 ieee80211_alloc_hw_nm+0x1b7a/0x2260 net/mac80211/main.c:835
 ieee80211_alloc_hw include/net/mac80211.h:4912 [inline]
 rt2x00usb_probe+0x8c/0xac0 drivers/net/wireless/ralink/rt2x00/rt2x00usb.c:808
 usb_probe_interface+0x300/0x9c0 drivers/usb/core/driver.c:396
 call_driver_probe drivers/base/dd.c:579 [inline]
 really_probe+0x23e/0xa90 drivers/base/dd.c:658
 __driver_probe_device+0x1de/0x440 drivers/base/dd.c:800
 driver_probe_device+0x4c/0x1b0 drivers/base/dd.c:830
 __device_attach_driver+0x1df/0x310 drivers/base/dd.c:958
 bus_for_each_drv+0x156/0x1e0 drivers/base/bus.c:462
page last free pid 5217 tgid 5217 stack trace:
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1262 [inline]
 __free_frozen_pages+0x66c/0xe70 mm/page_alloc.c:2680
 __folio_put+0x1e7/0x2d0 mm/swap.c:112
 device_release+0xa1/0x240 drivers/base/core.c:2568
 kobject_cleanup lib/kobject.c:689 [inline]
 kobject_release lib/kobject.c:720 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x1e4/0x5a0 lib/kobject.c:737
 put_device+0x1f/0x30 drivers/base/core.c:3774
 rt2x00usb_disconnect+0x16e/0x240 drivers/net/wireless/ralink/rt2x00/rt2x00usb.c:874
 usb_unbind_interface+0x1da/0x9a0 drivers/usb/core/driver.c:458
 device_remove drivers/base/dd.c:569 [inline]
 device_remove+0x122/0x170 drivers/base/dd.c:561
 __device_release_driver drivers/base/dd.c:1273 [inline]
 device_release_driver_internal+0x44b/0x620 drivers/base/dd.c:1296
 bus_remove_device+0x22f/0x420 drivers/base/bus.c:579
 device_del+0x396/0x9f0 drivers/base/core.c:3855
 usb_disable_device+0x355/0x7d0 drivers/usb/core/message.c:1418
 usb_disconnect+0x2e1/0x920 drivers/usb/core/hub.c:2316
 hub_port_connect drivers/usb/core/hub.c:5375 [inline]
 hub_port_connect_change drivers/usb/core/hub.c:5675 [inline]
 port_event drivers/usb/core/hub.c:5835 [inline]
 hub_event+0x1aa0/0x5030 drivers/usb/core/hub.c:5917
 process_one_work+0x9cc/0x1b70 kernel/workqueue.c:3238
 process_scheduled_works kernel/workqueue.c:3319 [inline]
 worker_thread+0x6c8/0xf10 kernel/workqueue.c:3400

Memory state around the buggy address:
 ffff88811e6a8c00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88811e6a8c80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88811e6a8d00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
                                                          ^
 ffff88811e6a8d80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
 ffff88811e6a8e00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
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