================================================================== BUG: KASAN: use-after-free in ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:642 [inline] BUG: KASAN: use-after-free in ath9k_hif_usb_rx_cb+0xea7/0x10d0 drivers/net/wireless/ath/ath9k/hif_usb.c:686 Read of size 4 at addr ffff888040d0c2e8 by task kworker/1:5/3700 CPU: 1 PID: 3700 Comm: kworker/1:5 Not tainted 5.19.0-syzkaller-02972-g200e340f2196 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Workqueue: events request_firmware_work_func Call Trace: __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:642 [inline] ath9k_hif_usb_rx_cb+0xea7/0x10d0 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 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649 RIP: 0010:preempt_count arch/x86/include/asm/preempt.h:27 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:166 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x60 kernel/kcov.c:200 Code: 48 89 ef 5d e9 d1 24 4c 00 5d be 03 00 00 00 e9 86 7f 81 02 66 0f 1f 44 00 00 48 8b be a8 01 00 00 e8 b4 ff ff ff 31 c0 c3 90 <65> 8b 05 79 95 87 7e 89 c1 48 8b 34 24 81 e1 00 01 00 00 65 48 8b RSP: 0018:ffffc900043df8a0 EFLAGS: 00000293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88801de21d80 RSI: ffffffff8160d4f5 RDI: 0000000000000007 RBP: ffffc900043dfa48 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000200 R11: 0000000000000001 R12: 0000000000000001 R13: ffffffff90f1dda0 R14: 0000000000000200 R15: ffffffff8c81ddb8 console_emit_next_record.constprop.0+0x4fb/0x840 arch/x86/include/asm/irqflags.h:45 console_flush_all kernel/printk/printk.c:2794 [inline] console_unlock+0x37a/0x5a0 kernel/printk/printk.c:2861 vprintk_emit+0x1b9/0x5f0 kernel/printk/printk.c:2271 vprintk+0x80/0x90 kernel/printk/printk_safe.c:50 _printk+0xba/0xed kernel/printk/printk.c:2292 ath9k_htc_hw_init.cold+0x17/0x1c drivers/net/wireless/ath/ath9k/htc_hst.c:509 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 The buggy address belongs to the physical page: page:ffffea0001034300 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x40d0c flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 0000000000000000 dead000000000122 0000000000000000 raw: 0000000000000001 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 0x140dc0(GFP_USER|__GFP_COMP|__GFP_ZERO), pid 3700, tgid 3700 (kworker/1:5), ts 693557454025, free_ts 694566696241 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 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+0x6f0/0x2080 net/wireless/core.c:440 ieee80211_alloc_hw_nm+0x373/0x2270 net/mac80211/main.c:585 ieee80211_alloc_hw include/net/mac80211.h:4412 [inline] ath9k_htc_probe_device+0x97/0x1f00 drivers/net/wireless/ath/ath9k/htc_drv_init.c:939 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 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: ffff888040d0c180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888040d0c200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff888040d0c280: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff888040d0c300: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888040d0c380: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ================================================================== ---------------- Code disassembly (best guess): 0: 48 89 ef mov %rbp,%rdi 3: 5d pop %rbp 4: e9 d1 24 4c 00 jmpq 0x4c24da 9: 5d pop %rbp a: be 03 00 00 00 mov $0x3,%esi f: e9 86 7f 81 02 jmpq 0x2817f9a 14: 66 0f 1f 44 00 00 nopw 0x0(%rax,%rax,1) 1a: 48 8b be a8 01 00 00 mov 0x1a8(%rsi),%rdi 21: e8 b4 ff ff ff callq 0xffffffda 26: 31 c0 xor %eax,%eax 28: c3 retq 29: 90 nop * 2a: 65 8b 05 79 95 87 7e mov %gs:0x7e879579(%rip),%eax # 0x7e8795aa <-- trapping instruction 31: 89 c1 mov %eax,%ecx 33: 48 8b 34 24 mov (%rsp),%rsi 37: 81 e1 00 01 00 00 and $0x100,%ecx 3d: 65 gs 3e: 48 rex.W 3f: 8b .byte 0x8b