================================================================== BUG: KASAN: slab-out-of-bounds in ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:642 [inline] BUG: KASAN: slab-out-of-bounds in ath9k_hif_usb_rx_cb+0xea7/0x10d0 drivers/net/wireless/ath/ath9k/hif_usb.c:686 Read of size 4 at addr ffff888111d2c2e8 by task rm/17991 CPU: 1 PID: 17991 Comm: rm Not tainted 5.19.0-rc7-syzkaller-00199-g8288c99fc263 #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+0x380/0x430 drivers/usb/core/hcd.c:1753 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+0x288/0x9a5 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:native_irq_disable arch/x86/include/asm/irqflags.h:40 [inline] RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:75 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:107 [inline] RIP: 0010:lock_is_held_type+0x54/0x140 kernel/locking/lockdep.c:5704 Code: c0 0f 85 ca 00 00 00 65 4c 8b 24 25 c0 6e 02 00 41 8b 94 24 f4 09 00 00 85 d2 0f 85 b1 00 00 00 48 89 fd 41 89 f6 9c 8f 04 24 48 c7 c7 e0 9f 47 86 31 db e8 dd 0d 00 00 41 8b 84 24 f0 09 00 RSP: 0018:ffffc9000e30f840 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 1ffff92001c61f14 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff87a95080 RBP: ffffffff87a95080 R08: 0000000000000000 R09: ffffffff88dd3f17 R10: fffffbfff11ba7e2 R11: 0000000000000001 R12: ffff88810ec1d580 R13: 00000000ffffffff R14: 00000000ffffffff R15: 0000000000000000 lock_is_held include/linux/lockdep.h:279 [inline] rcu_read_lock_sched_held+0x3a/0x70 kernel/rcu/update.c:125 trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0x480/0x570 kernel/locking/lockdep.c:5636 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:349 [inline] browse_rb mm/mmap.c:362 [inline] validate_mm+0x438/0x800 mm/mmap.c:429 __vma_adjust+0x101e/0x2430 mm/mmap.c:1027 vma_adjust include/linux/mm.h:2627 [inline] __split_vma+0x467/0x550 mm/mmap.c:2760 __do_munmap+0xced/0x1030 mm/mmap.c:2854 do_munmap mm/mmap.c:2893 [inline] munmap_vma_range mm/mmap.c:609 [inline] mmap_region+0x1d8/0x12b0 mm/mmap.c:1751 do_mmap+0x863/0xfa0 mm/mmap.c:1587 vm_mmap_pgoff+0x1b7/0x280 mm/util.c:552 ksys_mmap_pgoff+0x40d/0x5a0 mm/mmap.c:1633 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: 0033:0x7f22ea00c1f2 Code: 04 00 00 5b 5d 41 5c c3 41 f7 c1 ff 0f 00 00 75 27 55 48 89 fd 53 89 cb 48 85 ff 74 33 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 56 5b 5d c3 0f 1f 00 c7 05 9e 1f 01 00 16 00 RSP: 002b:00007ffc14c2eeb8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000000812 RCX: 00007f22ea00c1f2 RDX: 0000000000000005 RSI: 000000000000d000 RDI: 00007f22e9d52000 RBP: 00007f22e9d52000 R08: 0000000000000003 R09: 0000000000004000 R10: 0000000000000812 R11: 0000000000000206 R12: 00007ffc14c2eed0 R13: 00007ffc14c2ef00 R14: 0000000000000005 R15: 00007f22e9feaa00 Allocated by task 0: (stack is not available) The buggy address belongs to the object at ffff888111d2b900 which belongs to the cache task_struct of size 7040 The buggy address is located 2536 bytes inside of 7040-byte region [ffff888111d2b900, ffff888111d2d480) The buggy address belongs to the physical page: page:ffffea0004474a00 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x111d28 head:ffffea0004474a00 order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff888137aedf41 flags: 0x200000000010200(slab|head|node=0|zone=2) raw: 0200000000010200 0000000000000000 dead000000000122 ffff88810016b280 raw: 0000000000000000 0000000080040004 00000001ffffffff ffff888137aedf41 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 17974, tgid 17974 (dhcpcd-run-hook), ts 1310588582717, free_ts 1310574443094 prep_new_page mm/page_alloc.c:2456 [inline] get_page_from_freelist+0x138c/0x27a0 mm/page_alloc.c:4198 __alloc_pages+0x1c7/0x510 mm/page_alloc.c:5426 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+0x98f/0xda0 mm/slub.c:3031 __slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3118 slab_alloc_node mm/slub.c:3209 [inline] kmem_cache_alloc_node+0x397/0x4b0 mm/slub.c:3293 alloc_task_struct_node kernel/fork.c:172 [inline] dup_task_struct kernel/fork.c:969 [inline] copy_process+0x5c4/0x6dd0 kernel/fork.c:2071 kernel_clone+0xe7/0xab0 kernel/fork.c:2655 __do_sys_clone+0xba/0x100 kernel/fork.c:2789 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+0x537/0xb80 mm/page_alloc.c:1421 free_unref_page_prepare mm/page_alloc.c:3343 [inline] free_unref_page+0x19/0x5a0 mm/page_alloc.c:3438 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+0x2ef/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Memory state around the buggy address: ffff888111d2c180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888111d2c200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc >ffff888111d2c280: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ^ ffff888111d2c300: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff888111d2c380: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ================================================================== ---------------- Code disassembly (best guess): 0: c0 0f 85 rorb $0x85,(%rdi) 3: ca 00 00 lret $0x0 6: 00 65 4c add %ah,0x4c(%rbp) 9: 8b 24 25 c0 6e 02 00 mov 0x26ec0,%esp 10: 41 8b 94 24 f4 09 00 mov 0x9f4(%r12),%edx 17: 00 18: 85 d2 test %edx,%edx 1a: 0f 85 b1 00 00 00 jne 0xd1 20: 48 89 fd mov %rdi,%rbp 23: 41 89 f6 mov %esi,%r14d 26: 9c pushfq 27: 8f 04 24 popq (%rsp) * 2a: fa cli <-- trapping instruction 2b: 48 c7 c7 e0 9f 47 86 mov $0xffffffff86479fe0,%rdi 32: 31 db xor %ebx,%ebx 34: e8 dd 0d 00 00 callq 0xe16 39: 41 rex.B 3a: 8b .byte 0x8b 3b: 84 24 f0 test %ah,(%rax,%rsi,8) 3e: 09 00 or %eax,(%rax)