==================================================================
BUG: KASAN: use-after-free in ar5523_cmd_tx_cb+0x220/0x240 drivers/net/wireless/ath/ar5523/ar5523.c:228
Read of size 8 at addr ffff88806fa53450 by task syz-executor.2/3645
CPU: 0 PID: 3645 Comm: syz-executor.2 Not tainted 6.0.0-rc1-syzkaller-00399-g15b3f48a4339 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_address_description mm/kasan/report.c:317 [inline]
print_report.cold+0x2ba/0x6e9 mm/kasan/report.c:433
kasan_report+0xb1/0x1e0 mm/kasan/report.c:495
ar5523_cmd_tx_cb+0x220/0x240 drivers/net/wireless/ath/ar5523/ar5523.c:228
__usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1671
usb_hcd_giveback_urb+0x380/0x430 drivers/usb/core/hcd.c:1754
dummy_timer+0x11ff/0x32c0 drivers/usb/gadget/udc/dummy_hcd.c:1988
call_timer_fn+0x1a0/0x6b0 kernel/time/timer.c:1474
expire_timers kernel/time/timer.c:1519 [inline]
__run_timers.part.0+0x674/0xa80 kernel/time/timer.c:1790
__run_timers kernel/time/timer.c:1768 [inline]
run_timer_softirq+0xb3/0x1d0 kernel/time/timer.c:1803
__do_softirq+0x1d3/0x9c6 kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x123/0x180 kernel/softirq.c:650
irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x93/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:native_set_pte arch/x86/include/asm/pgtable_64.h:67 [inline]
RIP: 0010:set_pte_at arch/x86/include/asm/pgtable.h:1008 [inline]
RIP: 0010:copy_present_pte mm/memory.c:994 [inline]
RIP: 0010:copy_pte_range mm/memory.c:1085 [inline]
RIP: 0010:copy_pmd_range mm/memory.c:1171 [inline]
RIP: 0010:copy_pud_range mm/memory.c:1208 [inline]
RIP: 0010:copy_p4d_range mm/memory.c:1232 [inline]
RIP: 0010:copy_page_range+0xe6d/0x37d0 mm/memory.c:1330
Code: 89 44 24 20 41 81 e4 00 10 00 00 4c 89 e6 e8 fa cc c6 ff 4d 85 e4 0f 84 58 04 00 00 e8 0c d0 c6 ff 48 83 e3 df e8 03 d0 c6 ff <48> 8b 44 24 10 48 c1 e8 03 42 80 3c 28 00 0f 85 a7 21 00 00 48 8b
RSP: 0018:ffffc900031d7810 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 800000007b917007 RCX: 0000000000000000
RDX: ffff88802faea000 RSI: ffffffff81b469fd RDI: 0000000000000007
RBP: ffff88802fc4a748 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000000
dup_mmap kernel/fork.c:699 [inline]
dup_mm+0xa99/0x13a0 kernel/fork.c:1524
copy_mm kernel/fork.c:1576 [inline]
copy_process+0x3cb9/0x7090 kernel/fork.c:2256
kernel_clone+0xe7/0xab0 kernel/fork.c:2673
__do_sys_clone+0xba/0x100 kernel/fork.c:2807
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f4b5348786b
Code: ed 0f 85 60 01 00 00 64 4c 8b 0c 25 10 00 00 00 45 31 c0 4d 8d 91 d0 02 00 00 31 d2 31 f6 bf 11 00 20 01 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 89 00 00 00 41 89 c5 85 c0 0f 85 90 00 00
RSP: 002b:00007ffe4a469720 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f4b5348786b
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000555556306400
R10: 00005555563066d0 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffe4a469800
Allocated by task 3774:
kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:45 [inline]
set_alloc_info mm/kasan/common.c:437 [inline]
____kasan_kmalloc mm/kasan/common.c:516 [inline]
____kasan_kmalloc mm/kasan/common.c:475 [inline]
__kasan_kmalloc+0xa6/0xd0 mm/kasan/common.c:525
kasan_kmalloc include/linux/kasan.h:234 [inline]
__do_kmalloc mm/slab.c:3686 [inline]
__kmalloc+0x1f9/0x4a0 mm/slab.c:3695
kmalloc include/linux/slab.h:605 [inline]
kzalloc include/linux/slab.h:733 [inline]
wiphy_new_nm+0x6fc/0x2090 net/wireless/core.c:440
ieee80211_alloc_hw_nm+0x44b/0x2450 net/mac80211/main.c:668
ieee80211_alloc_hw include/net/mac80211.h:4511 [inline]
ar5523_probe+0x11a/0x1d10 drivers/net/wireless/ath/ar5523/ar5523.c:1595
usb_probe_interface+0x30b/0x7f0 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:530 [inline]
really_probe+0x249/0xb90 drivers/base/dd.c:609
__driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:748
driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:778
__device_attach_driver+0x206/0x2e0 drivers/base/dd.c:901
bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
__device_attach+0x1e4/0x530 drivers/base/dd.c:973
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
device_add+0xbd5/0x1e90 drivers/base/core.c:3517
usb_set_configuration+0x1019/0x1900 drivers/usb/core/message.c:2170
usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238
usb_probe_device+0xd4/0x2c0 drivers/usb/core/driver.c:293
call_driver_probe drivers/base/dd.c:530 [inline]
really_probe+0x249/0xb90 drivers/base/dd.c:609
__driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:748
driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:778
__device_attach_driver+0x206/0x2e0 drivers/base/dd.c:901
bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
__device_attach+0x1e4/0x530 drivers/base/dd.c:973
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
device_add+0xbd5/0x1e90 drivers/base/core.c:3517
usb_new_device.cold+0x685/0x10ad drivers/usb/core/hub.c:2573
hub_port_connect drivers/usb/core/hub.c:5353 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5497 [inline]
port_event drivers/usb/core/hub.c:5653 [inline]
hub_event+0x26c7/0x4610 drivers/usb/core/hub.c:5735
process_one_work+0x991/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Freed by task 3774:
kasan_save_stack+0x1e/0x40 mm/kasan/common.c:38
kasan_set_track+0x21/0x30 mm/kasan/common.c:45
kasan_set_free_info+0x20/0x30 mm/kasan/generic.c:370
____kasan_slab_free mm/kasan/common.c:367 [inline]
____kasan_slab_free+0x13d/0x1a0 mm/kasan/common.c:329
kasan_slab_free include/linux/kasan.h:200 [inline]
__cache_free mm/slab.c:3418 [inline]
kfree+0x173/0x390 mm/slab.c:3786
device_release+0x9f/0x240 drivers/base/core.c:2330
kobject_cleanup lib/kobject.c:673 [inline]
kobject_release lib/kobject.c:704 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1be/0x4c0 lib/kobject.c:721
put_device+0x1b/0x30 drivers/base/core.c:3624
ar5523_probe+0xe38/0x1d10 drivers/net/wireless/ath/ar5523/ar5523.c:1719
usb_probe_interface+0x30b/0x7f0 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:530 [inline]
really_probe+0x249/0xb90 drivers/base/dd.c:609
__driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:748
driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:778
__device_attach_driver+0x206/0x2e0 drivers/base/dd.c:901
bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
__device_attach+0x1e4/0x530 drivers/base/dd.c:973
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
device_add+0xbd5/0x1e90 drivers/base/core.c:3517
usb_set_configuration+0x1019/0x1900 drivers/usb/core/message.c:2170
usb_generic_driver_probe+0xba/0x100 drivers/usb/core/generic.c:238
usb_probe_device+0xd4/0x2c0 drivers/usb/core/driver.c:293
call_driver_probe drivers/base/dd.c:530 [inline]
really_probe+0x249/0xb90 drivers/base/dd.c:609
__driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:748
driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:778
__device_attach_driver+0x206/0x2e0 drivers/base/dd.c:901
bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
__device_attach+0x1e4/0x530 drivers/base/dd.c:973
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
device_add+0xbd5/0x1e90 drivers/base/core.c:3517
usb_new_device.cold+0x685/0x10ad drivers/usb/core/hub.c:2573
hub_port_connect drivers/usb/core/hub.c:5353 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5497 [inline]
port_event drivers/usb/core/hub.c:5653 [inline]
hub_event+0x26c7/0x4610 drivers/usb/core/hub.c:5735
process_one_work+0x991/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
The buggy address belongs to the object at ffff88806fa50000
which belongs to the cache kmalloc-16k of size 16384
The buggy address is located 13392 bytes inside of
16384-byte region [ffff88806fa50000, ffff88806fa54000)
The buggy address belongs to the physical page:
page:ffffea0001be9400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x6fa50
head:ffffea0001be9400 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 ffffea0000f61208 ffff888011841c50 ffff888011840b00
raw: 0000000000000000 ffff88806fa50000 0000000100000001 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as allocated
page last allocated via order 3, migratetype Unmovable, gfp_mask 0x3420c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_COMP|__GFP_HARDWALL|__GFP_THISNODE), pid 3774, tgid 3774 (kworker/0:8), ts 676971999883, free_ts 666712363883
prep_new_page mm/page_alloc.c:2532 [inline]
get_page_from_freelist+0x109b/0x2ce0 mm/page_alloc.c:4283
__alloc_pages+0x1c7/0x510 mm/page_alloc.c:5515
__alloc_pages_node include/linux/gfp.h:243 [inline]
kmem_getpages mm/slab.c:1363 [inline]
cache_grow_begin+0x75/0x360 mm/slab.c:2569
cache_alloc_refill+0x27f/0x380 mm/slab.c:2942
____cache_alloc mm/slab.c:3018 [inline]
____cache_alloc mm/slab.c:3001 [inline]
__do_cache_alloc mm/slab.c:3246 [inline]
slab_alloc mm/slab.c:3287 [inline]
__do_kmalloc mm/slab.c:3684 [inline]
__kmalloc+0x3a1/0x4a0 mm/slab.c:3695
kmalloc include/linux/slab.h:605 [inline]
kzalloc include/linux/slab.h:733 [inline]
wiphy_new_nm+0x6fc/0x2090 net/wireless/core.c:440
ieee80211_alloc_hw_nm+0x44b/0x2450 net/mac80211/main.c:668
ieee80211_alloc_hw include/net/mac80211.h:4511 [inline]
ar5523_probe+0x11a/0x1d10 drivers/net/wireless/ath/ar5523/ar5523.c:1595
usb_probe_interface+0x30b/0x7f0 drivers/usb/core/driver.c:396
call_driver_probe drivers/base/dd.c:530 [inline]
really_probe+0x249/0xb90 drivers/base/dd.c:609
__driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:748
driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:778
__device_attach_driver+0x206/0x2e0 drivers/base/dd.c:901
bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
__device_attach+0x1e4/0x530 drivers/base/dd.c:973
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:487
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1449 [inline]
free_pcp_prepare+0x5e4/0xd20 mm/page_alloc.c:1499
free_unref_page_prepare mm/page_alloc.c:3380 [inline]
free_unref_page+0x19/0x4d0 mm/page_alloc.c:3476
slab_destroy mm/slab.c:1615 [inline]
drain_freelist.isra.0+0xc6/0x130 mm/slab.c:2207
cache_reap+0x1b9/0x2e0 mm/slab.c:4017
process_one_work+0x991/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Memory state around the buggy address:
ffff88806fa53300: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88806fa53380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff88806fa53400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff88806fa53480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff88806fa53500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
----------------
Code disassembly (best guess):
0: 89 44 24 20 mov %eax,0x20(%rsp)
4: 41 81 e4 00 10 00 00 and $0x1000,%r12d
b: 4c 89 e6 mov %r12,%rsi
e: e8 fa cc c6 ff callq 0xffc6cd0d
13: 4d 85 e4 test %r12,%r12
16: 0f 84 58 04 00 00 je 0x474
1c: e8 0c d0 c6 ff callq 0xffc6d02d
21: 48 83 e3 df and $0xffffffffffffffdf,%rbx
25: e8 03 d0 c6 ff callq 0xffc6d02d
* 2a: 48 8b 44 24 10 mov 0x10(%rsp),%rax <-- trapping instruction
2f: 48 c1 e8 03 shr $0x3,%rax
33: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1)
38: 0f 85 a7 21 00 00 jne 0x21e5
3e: 48 rex.W
3f: 8b .byte 0x8b