==================================================================
BUG: KASAN: use-after-free in ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:588 [inline]
BUG: KASAN: use-after-free in ath9k_hif_usb_rx_cb+0xd17/0x10d0 drivers/net/wireless/ath/ath9k/hif_usb.c:686
Read of size 4 at addr ffff888079d942f4 by task swapper/0/0
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022
Call Trace:
<IRQ>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
print_address_description.constprop.0.cold+0xeb/0x495 mm/kasan/report.c:313
print_report mm/kasan/report.c:429 [inline]
kasan_report.cold+0xf4/0x1c6 mm/kasan/report.c:491
ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:588 [inline]
ath9k_hif_usb_rx_cb+0xd17/0x10d0 drivers/net/wireless/ath/ath9k/hif_usb.c:686
__usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1670
usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1747
dummy_timer+0x11f9/0x32b0 drivers/usb/gadget/udc/dummy_hcd.c:1988
call_timer_fn+0x1a5/0x6b0 kernel/time/timer.c:1474
expire_timers kernel/time/timer.c:1519 [inline]
__run_timers.part.0+0x679/0xa80 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+0x29b/0x9c2 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
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:29 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline]
RIP: 0010:arch_irqs_disabled arch/x86/include/asm/irqflags.h:130 [inline]
RIP: 0010:acpi_safe_halt drivers/acpi/processor_idle.c:113 [inline]
RIP: 0010:acpi_idle_do_entry+0x1c9/0x240 drivers/acpi/processor_idle.c:555
Code: 89 de e8 9a d3 ff f7 84 db 75 98 e8 91 d7 ff f7 e8 fc 26 06 f8 eb 0c e8 85 d7 ff f7 0f 00 2d fe 24 b9 00 e8 79 d7 ff f7 fb f4 <9c> 5b 81 e3 00 02 00 00 fa 31 ff 48 89 de e8 c4 d3 ff f7 48 85 db
RSP: 0018:ffffffff8ba07d38 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: ffffffff8babc940 RSI: ffffffff897b0247 RDI: 0000000000000000
RBP: ffff888145a70864 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001
R13: ffff888145a70800 R14: ffff888145a70864 R15: ffff88801b451004
acpi_idle_enter+0x369/0x510 drivers/acpi/processor_idle.c:692
cpuidle_enter_state+0x1b1/0xc80 drivers/cpuidle/cpuidle.c:238
cpuidle_enter+0x4a/0xa0 drivers/cpuidle/cpuidle.c:352
call_cpuidle kernel/sched/idle.c:155 [inline]
cpuidle_idle_call kernel/sched/idle.c:236 [inline]
do_idle+0x3e8/0x590 kernel/sched/idle.c:303
cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:400
rest_init+0x169/0x270 init/main.c:727
arch_call_rest_init+0xf/0x14 init/main.c:883
start_kernel+0x46e/0x48f init/main.c:1138
secondary_startup_64_no_verify+0xce/0xdb
</TASK>
Allocated by task 5744:
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_slab_alloc+0x90/0xc0 mm/kasan/common.c:470
kasan_slab_alloc include/linux/kasan.h:224 [inline]
slab_post_alloc_hook mm/slab.h:727 [inline]
slab_alloc_node mm/slub.c:3243 [inline]
slab_alloc mm/slub.c:3251 [inline]
__kmem_cache_alloc_lru mm/slub.c:3258 [inline]
kmem_cache_alloc+0x280/0x4d0 mm/slub.c:3268
getname_flags.part.0+0x50/0x4f0 fs/namei.c:139
getname_flags include/linux/audit.h:321 [inline]
getname fs/namei.c:218 [inline]
__do_sys_unlink fs/namei.c:4287 [inline]
__se_sys_unlink fs/namei.c:4285 [inline]
__x64_sys_unlink+0xb1/0x110 fs/namei.c:4285
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
Freed by task 5744:
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+0x166/0x1a0 mm/kasan/common.c:329
kasan_slab_free include/linux/kasan.h:200 [inline]
slab_free_hook mm/slub.c:1754 [inline]
slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1780
slab_free mm/slub.c:3534 [inline]
kmem_cache_free+0xed/0x5b0 mm/slub.c:3551
putname fs/namei.c:271 [inline]
putname+0xfe/0x140 fs/namei.c:257
do_unlinkat+0x11f/0x650 fs/namei.c:4262
__do_sys_unlink fs/namei.c:4287 [inline]
__se_sys_unlink fs/namei.c:4285 [inline]
__x64_sys_unlink+0xc6/0x110 fs/namei.c:4285
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
The buggy address belongs to the object at ffff888079d93300
which belongs to the cache names_cache of size 4096
The buggy address is located 4084 bytes inside of
4096-byte region [ffff888079d93300, ffff888079d94300)
The buggy address belongs to the physical page:
page:ffffea0001e76400 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x79d90
head:ffffea0001e76400 order:3 compound_mapcount:0 compound_pincount:0
flags: 0xfff00000010200(slab|head|node=0|zone=1|lastcpupid=0x7ff)
raw: 00fff00000010200 0000000000000000 dead000000000122 ffff888140007500
raw: 0000000000000000 0000000000070007 00000001ffffffff 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 0x1d20c0(__GFP_IO|__GFP_FS|__GFP_NOWARN|__GFP_NORETRY|__GFP_COMP|__GFP_NOMEMALLOC|__GFP_HARDWALL), pid 5744, tgid 5744 (udevd), ts 512885503920, free_ts 512866028050
prep_new_page mm/page_alloc.c:2457 [inline]
get_page_from_freelist+0x1298/0x3b80 mm/page_alloc.c:4203
__alloc_pages+0x1c7/0x510 mm/page_alloc.c:5431
alloc_pages+0x1aa/0x310 mm/mempolicy.c:2272
alloc_slab_page mm/slub.c:1824 [inline]
allocate_slab+0x26c/0x3c0 mm/slub.c:1969
new_slab mm/slub.c:2029 [inline]
___slab_alloc+0x99f/0xe10 mm/slub.c:3031
__slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3118
slab_alloc_node mm/slub.c:3209 [inline]
slab_alloc mm/slub.c:3251 [inline]
__kmem_cache_alloc_lru mm/slub.c:3258 [inline]
kmem_cache_alloc+0x3e6/0x4d0 mm/slub.c:3268
getname_flags.part.0+0x50/0x4f0 fs/namei.c:139
getname_flags include/linux/audit.h:321 [inline]
getname+0x8e/0xd0 fs/namei.c:218
do_sys_openat2+0xf5/0x4c0 fs/open.c:1304
do_sys_open fs/open.c:1326 [inline]
__do_sys_openat fs/open.c:1342 [inline]
__se_sys_openat fs/open.c:1337 [inline]
__x64_sys_openat+0x13f/0x1f0 fs/open.c:1337
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
page last free stack trace:
reset_page_owner include/linux/page_owner.h:24 [inline]
free_pages_prepare mm/page_alloc.c:1371 [inline]
free_pcp_prepare+0x549/0xd20 mm/page_alloc.c:1421
free_unref_page_prepare mm/page_alloc.c:3344 [inline]
free_unref_page+0x19/0x6a0 mm/page_alloc.c:3439
device_release+0x9f/0x240 drivers/base/core.c:2241
kobject_cleanup lib/kobject.c:673 [inline]
kobject_release lib/kobject.c:704 [inline]
kref_put include/linux/kref.h:65 [inline]
kobject_put+0x1c8/0x540 lib/kobject.c:721
put_device+0x1b/0x30 drivers/base/core.c:3535
ath9k_htc_probe_device+0x1c7/0x1f00 drivers/net/wireless/ath/ath9k/htc_drv_init.c:976
ath9k_htc_hw_init+0x31/0x60 drivers/net/wireless/ath/ath9k/htc_hst.c:508
ath9k_hif_usb_firmware_cb+0x274/0x530 drivers/net/wireless/ath/ath9k/hif_usb.c:1245
request_firmware_work_func+0x12c/0x230 drivers/base/firmware_loader/main.c:1107
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Memory state around the buggy address:
ffff888079d94180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff888079d94200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff888079d94280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff888079d94300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff888079d94380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
----------------
Code disassembly (best guess):
0: 89 de mov %ebx,%esi
2: e8 9a d3 ff f7 callq 0xf7ffd3a1
7: 84 db test %bl,%bl
9: 75 98 jne 0xffffffa3
b: e8 91 d7 ff f7 callq 0xf7ffd7a1
10: e8 fc 26 06 f8 callq 0xf8062711
15: eb 0c jmp 0x23
17: e8 85 d7 ff f7 callq 0xf7ffd7a1
1c: 0f 00 2d fe 24 b9 00 verw 0xb924fe(%rip) # 0xb92521
23: e8 79 d7 ff f7 callq 0xf7ffd7a1
28: fb sti
29: f4 hlt
* 2a: 9c pushfq <-- trapping instruction
2b: 5b pop %rbx
2c: 81 e3 00 02 00 00 and $0x200,%ebx
32: fa cli
33: 31 ff xor %edi,%edi
35: 48 89 de mov %rbx,%rsi
38: e8 c4 d3 ff f7 callq 0xf7ffd401
3d: 48 85 db test %rbx,%rbx