================================================================== 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 ffff8880348242e8 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: __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: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 66 90 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: ffff888145691064 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 R13: ffff888145691000 R14: ffff888145691064 R15: ffff888146882804 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 The buggy address belongs to the physical page: page:ffffea0000d20900 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x34824 flags: 0xfff00000000000(node=0|zone=1|lastcpupid=0x7ff) raw: 00fff00000000000 0000000000000000 ffffea0000d20908 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 3, migratetype Unmovable, gfp_mask 0x140dc0(GFP_USER|__GFP_COMP|__GFP_ZERO), pid 15902, tgid 15902 (kworker/0:4), ts 2765081107966, free_ts 2766127147274 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: ffff888034824180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888034824200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff888034824280: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff888034824300: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff888034824380: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ================================================================== ---------------- 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: 66 90 xchg %ax,%ax 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