================================================================== BUG: KASAN: slab-out-of-bounds in ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:622 [inline] BUG: KASAN: slab-out-of-bounds in ath9k_hif_usb_rx_cb+0xe64/0xf90 drivers/net/wireless/ath/ath9k/hif_usb.c:666 Read of size 4 at addr ffff8881d5fcc0d0 by task swapper/0/0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.7.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xef/0x16e lib/dump_stack.c:118 print_address_description.constprop.0.cold+0xd3/0x314 mm/kasan/report.c:382 __kasan_report.cold+0x37/0x92 mm/kasan/report.c:511 kasan_report+0x33/0x50 mm/kasan/common.c:625 ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:622 [inline] ath9k_hif_usb_rx_cb+0xe64/0xf90 drivers/net/wireless/ath/ath9k/hif_usb.c:666 __usb_hcd_giveback_urb+0x1f2/0x470 drivers/usb/core/hcd.c:1648 usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1713 dummy_timer+0x125e/0x32b4 drivers/usb/gadget/udc/dummy_hcd.c:1966 call_timer_fn+0x1ac/0x700 kernel/time/timer.c:1405 expire_timers kernel/time/timer.c:1450 [inline] __run_timers kernel/time/timer.c:1774 [inline] __run_timers kernel/time/timer.c:1741 [inline] run_timer_softirq+0x5f9/0x1500 kernel/time/timer.c:1787 __do_softirq+0x21e/0x9aa kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x178/0x1a0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:546 [inline] smp_apic_timer_interrupt+0x141/0x540 arch/x86/kernel/apic/apic.c:1140 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 RIP: 0010:default_idle+0x28/0x300 arch/x86/kernel/process.c:698 Code: cc cc 41 56 41 55 65 44 8b 2d 24 83 6b 7a 41 54 55 53 0f 1f 44 00 00 e8 06 69 af fb e9 07 00 00 00 0f 00 2d 0a 25 4c 00 fb f4 <65> 44 8b 2d 00 83 6b 7a 0f 1f 44 00 00 5b 5d 41 5c 41 5d 41 5e c3 RSP: 0018:ffffffff87007da0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000007 RBX: ffffffff8702f800 RCX: 0000000000000000 RDX: 0000000000000000 RSI: 0000000000000006 RDI: ffffffff8703007c RBP: fffffbfff0e05f00 R08: ffffffff8702f800 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffffffff87e88e80 R15: 0000000000000000 cpuidle_idle_call kernel/sched/idle.c:154 [inline] do_idle+0x3e0/0x500 kernel/sched/idle.c:269 cpu_startup_entry+0x14/0x20 kernel/sched/idle.c:361 start_kernel+0x9bb/0x9f5 init/main.c:1038 secondary_startup_64+0xb6/0xc0 arch/x86/kernel/head_64.S:242 Allocated by task 155: save_stack+0x1b/0x40 mm/kasan/common.c:49 set_track mm/kasan/common.c:57 [inline] __kasan_kmalloc mm/kasan/common.c:495 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:468 slab_post_alloc_hook mm/slab.h:586 [inline] slab_alloc_node mm/slub.c:2797 [inline] slab_alloc mm/slub.c:2805 [inline] kmem_cache_alloc+0xd8/0x300 mm/slub.c:2810 getname_flags fs/namei.c:138 [inline] getname_flags+0xd2/0x5b0 fs/namei.c:128 do_sys_openat2+0x3fc/0x7d0 fs/open.c:1142 do_sys_open+0xc3/0x140 fs/open.c:1164 do_syscall_64+0xb6/0x5a0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 Freed by task 155: save_stack+0x1b/0x40 mm/kasan/common.c:49 set_track mm/kasan/common.c:57 [inline] kasan_set_free_info mm/kasan/common.c:317 [inline] __kasan_slab_free+0x117/0x160 mm/kasan/common.c:456 slab_free_hook mm/slub.c:1455 [inline] slab_free_freelist_hook mm/slub.c:1488 [inline] slab_free mm/slub.c:3045 [inline] kmem_cache_free+0x9b/0x360 mm/slub.c:3061 putname+0xe1/0x120 fs/namei.c:259 do_sys_openat2+0x467/0x7d0 fs/open.c:1157 do_sys_open+0xc3/0x140 fs/open.c:1164 do_syscall_64+0xb6/0x5a0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 The buggy address belongs to the object at ffff8881d5fcb300 which belongs to the cache names_cache of size 4096 The buggy address is located 3536 bytes inside of 4096-byte region [ffff8881d5fcb300, ffff8881d5fcc300) The buggy address belongs to the page: page:ffffea000757f200 refcount:1 mapcount:0 mapping:000000008cca8293 index:0x0 head:ffffea000757f200 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x200000000010200(slab|head) raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881da11e000 raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881d5fcbf80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881d5fcc000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8881d5fcc080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8881d5fcc100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881d5fcc180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================