==================================================================
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 ffff88811d917450 by task syz-executor.3/1311
CPU: 1 PID: 1311 Comm: syz-executor.3 Not tainted 6.0.0-rc4-syzkaller-00055-g6690986da1e2 #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:apparmor_socket_post_create+0x0/0x6e0 security/apparmor/lsm.c:885
Code: f2 fd ff ff 4c 89 ff e8 8e 18 88 ff e9 5e ff ff ff 4c 89 ff e8 81 18 88 ff e9 0f ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 <41> 56 41 55 41 54 55 44 89 c5 53 48 89 fb e8 3d 29 54 ff 31 ff 89
RSP: 0018:ffffc900013a7dd8 EFLAGS: 00000246
RAX: 1ffffffff0eb48df RBX: ffffffff875a46e0 RCX: 0000000000000006
RDX: 0000000000000001 RSI: 0000000000000002 RDI: ffff888121382e00
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: 00000000ffffff9f
R13: 0000000000000001 R14: 0000000000000002 R15: ffff888121382e00
security_socket_post_create+0x64/0xc0 security/security.c:2191
__sock_create+0x64c/0x790 net/socket.c:1531
sock_create net/socket.c:1566 [inline]
__sys_socket_create net/socket.c:1603 [inline]
__sys_socket_create net/socket.c:1588 [inline]
__sys_socket+0x12f/0x240 net/socket.c:1636
__do_sys_socket net/socket.c:1649 [inline]
__se_sys_socket net/socket.c:1647 [inline]
__x64_sys_socket+0x6f/0xb0 net/socket.c:1647
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: 0033:0x7f4c21b398f7
Code: f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 29 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffe44667c28 EFLAGS: 00000206 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007ffe44668390 RCX: 00007f4c21b398f7
RDX: 0000000000000006 RSI: 0000000000000001 RDI: 0000000000000002
RBP: 0000000000000003 R08: 0000000000000000 R09: 00007ffe446681a0
R10: 0000000000000000 R11: 0000000000000206 R12: 000000000000005d
R13: 0000000000233603 R14: 0000000000000006 R15: 00007ffe446683d0
The buggy address belongs to the physical page:
page:ffffea00047645c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11d917
flags: 0x200000000000000(node=0|zone=2)
raw: 0200000000000000 0000000000000000 dead000000000122 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 4268, tgid 4268 (kworker/1:6), ts 2307359722490, free_ts 2309410384990
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:930
kmalloc_order_trace+0x13/0x120 mm/slab_common.c:946
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:560 [inline]
really_probe+0x249/0xb90 drivers/base/dd.c:639
__driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:778
driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:808
__device_attach_driver+0x1d0/0x2e0 drivers/base/dd.c:936
bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
__device_attach+0x1e4/0x530 drivers/base/dd.c:1008
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:560 [inline]
really_probe+0x249/0xb90 drivers/base/dd.c:639
__driver_probe_device+0x1df/0x4d0 drivers/base/dd.c:778
driver_probe_device+0x4c/0x1a0 drivers/base/dd.c:808
__device_attach_driver+0x1d0/0x2e0 drivers/base/dd.c:936
bus_for_each_drv+0x15f/0x1e0 drivers/base/bus.c:427
__device_attach+0x1e4/0x530 drivers/base/dd.c:1008
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:
ffff88811d917300: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff88811d917380: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
>ffff88811d917400: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
^
ffff88811d917480: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
ffff88811d917500: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff
==================================================================
----------------
Code disassembly (best guess), 3 bytes skipped:
0: ff 4c 89 ff decl -0x1(%rcx,%rcx,4)
4: e8 8e 18 88 ff callq 0xff881897
9: e9 5e ff ff ff jmpq 0xffffff6c
e: 4c 89 ff mov %r15,%rdi
11: e8 81 18 88 ff callq 0xff881897
16: e9 0f ff ff ff jmpq 0xffffff2a
1b: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1)
22: 00 00 00 00
26: 90 nop
* 27: 41 56 push %r14 <-- trapping instruction
29: 41 55 push %r13
2b: 41 54 push %r12
2d: 55 push %rbp
2e: 44 89 c5 mov %r8d,%ebp
31: 53 push %rbx
32: 48 89 fb mov %rdi,%rbx
35: e8 3d 29 54 ff callq 0xff542977
3a: 31 ff xor %edi,%edi
3c: 89 .byte 0x89