================================================================== BUG: KASAN: use-after-free in ath9k_hif_usb_rx_cb+0x1120/0x1130 drivers/net/wireless/ath/ath9k/hif_usb.c:686 Read of size 4 at addr ffff88807c43c2f4 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+0x1e3/0x2cb lib/dump_stack.c:106 print_address_description+0x65/0x4b0 mm/kasan/report.c:313 print_report+0xf4/0x210 mm/kasan/report.c:429 kasan_report+0xfb/0x130 mm/kasan/report.c:491 ath9k_hif_usb_rx_cb+0x1120/0x1130 drivers/net/wireless/ath/ath9k/hif_usb.c:686 __usb_hcd_giveback_urb+0x369/0x530 drivers/usb/core/hcd.c:1670 dummy_timer+0x86b/0x3110 drivers/usb/gadget/udc/dummy_hcd.c:1988 call_timer_fn+0xf5/0x210 kernel/time/timer.c:1474 expire_timers kernel/time/timer.c:1519 [inline] __run_timers+0x76a/0x980 kernel/time/timer.c:1790 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1803 __do_softirq+0x382/0x793 kernel/softirq.c:571 __irq_exit_rcu+0xec/0x170 kernel/softirq.c:650 irq_exit_rcu+0x5/0x20 kernel/softirq.c:662 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 RIP: 0010:native_save_fl arch/x86/include/asm/irqflags.h:22 [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 drivers/acpi/processor_idle.c:555 [inline] RIP: 0010:acpi_idle_enter+0x43d/0x7a0 drivers/acpi/processor_idle.c:692 Code: ff e8 07 1b 53 f7 48 83 e3 08 44 8b 7c 24 04 0f 85 10 01 00 00 e8 c3 c2 59 f7 66 90 e8 2c 16 53 f7 0f 00 2d 55 7c c0 00 fb f4 <4c> 89 e3 48 c1 eb 03 42 80 3c 2b 00 74 08 4c 89 e7 e8 4d e2 a5 f7 RSP: 0018:ffffffff8c807ba0 EFLAGS: 000002d3 RAX: ffffffff8a350a84 RBX: 0000000000000000 RCX: ffffffff8c8bb8c0 RDX: 0000000000000000 RSI: ffffffff8a8d2fe0 RDI: ffffffff8ae9a7c0 RBP: ffffffff8c807c50 R08: ffffffff8a350a69 R09: fffffbfff1917719 R10: fffffbfff1917719 R11: 1ffffffff1917718 R12: ffffffff8c807be0 R13: dffffc0000000000 R14: ffff888011dbd800 R15: 0000000000000001 cpuidle_enter_state+0x517/0xed0 drivers/cpuidle/cpuidle.c:238 cpuidle_enter+0x59/0x90 drivers/cpuidle/cpuidle.c:352 call_cpuidle kernel/sched/idle.c:155 [inline] cpuidle_idle_call kernel/sched/idle.c:236 [inline] do_idle+0x3d2/0x640 kernel/sched/idle.c:303 cpu_startup_entry+0x15/0x20 kernel/sched/idle.c:400 rest_init+0x24f/0x270 init/main.c:727 arch_call_rest_init+0xa/0xa init/main.c:883 start_kernel+0x4ac/0x55b init/main.c:1138 secondary_startup_64_no_verify+0xcf/0xdb The buggy address belongs to the physical page: page:ffffea0001f10f00 refcount:0 mapcount:0 mapping:0000000000000000 index:0x1 pfn:0x7c43c 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 4560, tgid 4560 (kworker/0:11), ts 1735365745928, free_ts 1736381049350 prep_new_page mm/page_alloc.c:2457 [inline] get_page_from_freelist+0x72b/0x7a0 mm/page_alloc.c:4203 __alloc_pages+0x259/0x560 mm/page_alloc.c:5431 kmalloc_order+0x41/0x150 mm/slab_common.c:917 kmalloc_order_trace+0x15/0x70 mm/slab_common.c:933 kmalloc_large include/linux/slab.h:529 [inline] __kmalloc+0x26e/0x370 mm/slub.c:4413 kmalloc include/linux/slab.h:605 [inline] kzalloc include/linux/slab.h:733 [inline] wiphy_new_nm+0x617/0x18f0 net/wireless/core.c:440 ieee80211_alloc_hw_nm+0x338/0x1e60 net/mac80211/main.c:585 ieee80211_alloc_hw include/net/mac80211.h:4412 [inline] ath9k_htc_probe_device+0xaa/0x2090 drivers/net/wireless/ath/ath9k/htc_drv_init.c:939 ath9k_htc_hw_init+0x30/0x70 drivers/net/wireless/ath/ath9k/htc_hst.c:508 ath9k_hif_usb_firmware_cb+0x250/0x4d0 drivers/net/wireless/ath/ath9k/hif_usb.c:1245 request_firmware_work_func+0x198/0x270 drivers/base/firmware_loader/main.c:1107 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 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+0x812/0x900 mm/page_alloc.c:1421 free_unref_page_prepare mm/page_alloc.c:3344 [inline] free_unref_page+0x7d/0x390 mm/page_alloc.c:3439 free_large_kmalloc+0xeb/0x1a0 mm/slub.c:3573 kfree+0x182/0x210 mm/slub.c:4558 device_release+0x98/0x1c0 kobject_cleanup+0x235/0x470 lib/kobject.c:673 ath9k_htc_probe_device+0xfe8/0x2090 drivers/net/wireless/ath/ath9k/htc_drv_init.c:976 ath9k_htc_hw_init+0x30/0x70 drivers/net/wireless/ath/ath9k/htc_hst.c:508 ath9k_hif_usb_firmware_cb+0x250/0x4d0 drivers/net/wireless/ath/ath9k/hif_usb.c:1245 request_firmware_work_func+0x198/0x270 drivers/base/firmware_loader/main.c:1107 process_one_work+0x81c/0xd10 kernel/workqueue.c:2289 worker_thread+0xb14/0x1330 kernel/workqueue.c:2436 kthread+0x266/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 Memory state around the buggy address: ffff88807c43c180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88807c43c200: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff88807c43c280: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88807c43c300: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88807c43c380: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ================================================================== ---------------- Code disassembly (best guess), 1 bytes skipped: 0: e8 07 1b 53 f7 callq 0xf7531b0c 5: 48 83 e3 08 and $0x8,%rbx 9: 44 8b 7c 24 04 mov 0x4(%rsp),%r15d e: 0f 85 10 01 00 00 jne 0x124 14: e8 c3 c2 59 f7 callq 0xf759c2dc 19: 66 90 xchg %ax,%ax 1b: e8 2c 16 53 f7 callq 0xf753164c 20: 0f 00 2d 55 7c c0 00 verw 0xc07c55(%rip) # 0xc07c7c 27: fb sti 28: f4 hlt * 29: 4c 89 e3 mov %r12,%rbx <-- trapping instruction 2c: 48 c1 eb 03 shr $0x3,%rbx 30: 42 80 3c 2b 00 cmpb $0x0,(%rbx,%r13,1) 35: 74 08 je 0x3f 37: 4c 89 e7 mov %r12,%rdi 3a: e8 4d e2 a5 f7 callq 0xf7a5e28c