==================================================================
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 ffff888118643450 by task syz-executor.3/8288
CPU: 1 PID: 8288 Comm: syz-executor.3 Not tainted 5.19.0-syzkaller-13666-gffcf9c5700e4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
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/0x719 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+0x1c0/0x9a9 kernel/softirq.c:571
invoke_softirq kernel/softirq.c:445 [inline]
__irq_exit_rcu+0x113/0x170 kernel/softirq.c:650
irq_exit_rcu+0x5/0x20 kernel/softirq.c:662
sysvec_apic_timer_interrupt+0x8e/0xc0 arch/x86/kernel/apic/apic.c:1106
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:instrument_atomic_read include/linux/instrumented.h:71 [inline]
RIP: 0010:atomic_read include/linux/atomic/atomic-instrumented.h:27 [inline]
RIP: 0010:folio_memcg_lock+0x148/0x5a0 mm/memcontrol.c:2059
Code: 81 4c 89 ff e8 79 ca ad ff 4d 85 f6 0f 85 b5 02 00 00 9c 58 f6 c4 02 0f 85 d0 02 00 00 4d 85 f6 74 01 fb 4c 8d b3 40 0f 00 00 04 00 00 00 4c 89 f7 e8 0b 9c fd ff 4c 89 f0 48 c1 e8 03 42 0f
RSP: 0000:ffffc9000eb87b20 EFLAGS: 00000206
RAX: 0000000000000002 RBX: ffff888100218000 RCX: 1ffffffff160f4fe
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000eb87b68 R08: 0000000000000001 R09: ffffffff8b0736d7
R10: 0000000000000001 R11: 0000000000000000 R12: dffffc0000000000
R13: fffff94000967bb7 R14: ffff888100218f40 R15: ffff888100218688
page_remove_rmap+0x1e/0x4f0 mm/rmap.c:1429
wp_page_copy+0xb45/0x2640 mm/memory.c:3211
do_wp_page+0x192/0x1dd0 mm/memory.c:3479
handle_pte_fault mm/memory.c:4929 [inline]
__handle_mm_fault+0x1016/0x31c0 mm/memory.c:5053
handle_mm_fault+0x1c8/0x780 mm/memory.c:5151
do_user_addr_fault+0x475/0x1210 arch/x86/mm/fault.c:1397
handle_page_fault arch/x86/mm/fault.c:1488 [inline]
exc_page_fault+0x94/0x170 arch/x86/mm/fault.c:1544
asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x7f312545d0fa
Code: 24 7e 13 00 48 89 05 15 7e 13 00 c7 05 fb 7d 13 00 01 00 00 00 48 c7 05 e8 d2 09 01 00 00 00 00 c7 05 e6 d2 09 01 00 00 00 00 05 44 13 0a 01 00 00 00 00 c3 0f 1f 00 48 8d 7e 58 89 f1 48 8d
RSP: 002b:00007ffc8d29d9d8 EFLAGS: 00010202
RAX: 00005555572b96c0 RBX: 0000000000000001 RCX: 00007f31264fa3c0
RDX: 0000000000000001 RSI: 00007f3125594ef0 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007f3125594ef0
R10: 00005555572b9400 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000001 R15: 00007ffc8d29daf0
The buggy address belongs to the physical page:
page:ffffea00046190c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x118643
flags: 0x200000000000000(node=0|zone=2)
raw: 0200000000000000 0000000000000000 ffffea00046190c8 0000000000000000
raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000
page dumped because: kasan: bad access detected
page_owner tracks the page as freed
page last allocated via order 2, migratetype Unmovable, gfp_mask 0x140dc0(GFP_USER|__GFP_COMP|__GFP_ZERO), pid 4059, tgid 4059 (kworker/1:4), ts 438652316601, free_ts 440702768559
prep_new_page mm/page_alloc.c:2532 [inline]
get_page_from_freelist+0x11cc/0x2a20 mm/page_alloc.c:4283
__alloc_pages+0x1c7/0x510 mm/page_alloc.c:5515
alloc_pages+0x1a6/0x270 mm/mempolicy.c:2270
kmalloc_order+0x34/0xf0 mm/slab_common.c:917
kmalloc_order_trace+0x13/0x120 mm/slab_common.c:933
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+0x5d2/0xb80 mm/page_alloc.c:1499
free_unref_page_prepare mm/page_alloc.c:3380 [inline]
free_unref_page+0x19/0x420 mm/page_alloc.c:3476
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
Memory state around the buggy address:
ffff888118643300: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff888118643380: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff888118643400: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff888118643480: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff888118643500: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
----------------
Code disassembly (best guess):
0: 81 4c 89 ff e8 79 ca orl $0xadca79e8,-0x1(%rcx,%rcx,4)
7: ad
8: ff 4d 85 decl -0x7b(%rbp)
b: f6 0f 85 testb $0x85,(%rdi)
e: b5 02 mov $0x2,%ch
10: 00 00 add %al,(%rax)
12: 9c pushfq
13: 58 pop %rax
14: f6 c4 02 test $0x2,%ah
17: 0f 85 d0 02 00 00 jne 0x2ed
1d: 4d 85 f6 test %r14,%r14
20: 74 01 je 0x23
22: fb sti
23: 4c 8d b3 40 0f 00 00 lea 0xf40(%rbx),%r14
* 2a: be 04 00 00 00 mov $0x4,%esi <-- trapping instruction
2f: 4c 89 f7 mov %r14,%rdi
32: e8 0b 9c fd ff callq 0xfffd9c42
37: 4c 89 f0 mov %r14,%rax
3a: 48 c1 e8 03 shr $0x3,%rax
3e: 42 rex.X
3f: 0f .byte 0xf