================================================================== BUG: KASAN: use-after-free in ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:589 [inline] BUG: KASAN: use-after-free in ath9k_hif_usb_rx_cb+0xca2/0x1020 drivers/net/wireless/ath/ath9k/hif_usb.c:680 Read of size 4 at addr ffff88810a5040c4 by task systemd-journal/2625 CPU: 0 PID: 2625 Comm: systemd-journal Not tainted 5.10.0-rc3-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+0x107/0x163 lib/dump_stack.c:118 print_address_description.constprop.0.cold+0xae/0x4c8 mm/kasan/report.c:385 __kasan_report mm/kasan/report.c:545 [inline] kasan_report.cold+0x1f/0x37 mm/kasan/report.c:562 ath9k_hif_usb_rx_stream drivers/net/wireless/ath/ath9k/hif_usb.c:589 [inline] ath9k_hif_usb_rx_cb+0xca2/0x1020 drivers/net/wireless/ath/ath9k/hif_usb.c:680 __usb_hcd_giveback_urb+0x2b0/0x5c0 drivers/usb/core/hcd.c:1657 usb_hcd_giveback_urb+0x367/0x410 drivers/usb/core/hcd.c:1728 dummy_timer+0x11f4/0x3280 drivers/usb/gadget/udc/dummy_hcd.c:1969 call_timer_fn+0x1a5/0x630 kernel/time/timer.c:1410 expire_timers kernel/time/timer.c:1455 [inline] __run_timers.part.0+0x67c/0xa10 kernel/time/timer.c:1747 __run_timers kernel/time/timer.c:1728 [inline] run_timer_softirq+0x80/0x120 kernel/time/timer.c:1760 __do_softirq+0x1b2/0x945 kernel/softirq.c:298 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x80/0xa0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x110/0x1a0 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x43/0xa0 arch/x86/kernel/apic/apic.c:1091 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:631 RIP: 0010:bytes_is_nonzero mm/kasan/generic.c:91 [inline] RIP: 0010:memory_is_nonzero mm/kasan/generic.c:108 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:134 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:165 [inline] RIP: 0010:check_memory_region_inline mm/kasan/generic.c:183 [inline] RIP: 0010:check_memory_region+0xdb/0x180 mm/kasan/generic.c:192 Code: 80 38 00 74 f2 48 89 c2 b8 01 00 00 00 48 85 d2 75 56 5b 5d 41 5c c3 48 85 d2 74 5e 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 50 <80> 38 00 74 f2 eb d4 41 bc 08 00 00 00 48 89 ea 45 29 dc 4d 8d 1c RSP: 0018:ffffc90000207740 EFLAGS: 00000282 RAX: fffffbfff1079b29 RBX: fffffbfff1079b2a RCX: ffffffff81265f08 RDX: fffffbfff1079b2a RSI: 0000000000000008 RDI: ffffffff883cd948 RBP: fffffbfff1079b29 R08: 0000000000000000 R09: ffffffff883cd94f R10: fffffbfff1079b29 R11: 0000000000000000 R12: 0000000000000000 R13: ffffffff87376568 R14: 0000000000000000 R15: 0000000000000000 instrument_atomic_read include/linux/instrumented.h:71 [inline] test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] cpumask_test_cpu include/linux/cpumask.h:367 [inline] trace_lock_acquire include/trace/events/lock.h:13 [inline] lock_acquire+0xb8/0x870 kernel/locking/lockdep.c:5407 __mutex_lock_common kernel/locking/mutex.c:956 [inline] __mutex_lock+0x134/0x10a0 kernel/locking/mutex.c:1103 kernfs_iop_permission+0x5f/0xb0 fs/kernfs/inode.c:284 do_inode_permission fs/namei.c:398 [inline] inode_permission fs/namei.c:463 [inline] inode_permission+0x2d1/0x380 fs/namei.c:439 may_lookup fs/namei.c:1575 [inline] link_path_walk.part.0+0x7a9/0xc20 fs/namei.c:2126 link_path_walk fs/namei.c:2113 [inline] path_openat+0x25a/0x2730 fs/namei.c:3365 do_filp_open+0x17e/0x3c0 fs/namei.c:3396 do_sys_openat2+0x16d/0x420 fs/open.c:1168 do_sys_open fs/open.c:1184 [inline] __do_sys_open fs/open.c:1192 [inline] __se_sys_open fs/open.c:1188 [inline] __x64_sys_open+0x119/0x1c0 fs/open.c:1188 do_syscall_64+0x2d/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f20825a06f0 Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 19 30 2c 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 fe 9d 01 00 48 89 04 24 RSP: 002b:00007ffd26df42d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 000055e4446b1eb0 RCX: 00007f20825a06f0 RDX: 00000000000001b6 RSI: 0000000000080000 RDI: 00007ffd26df43b0 RBP: 0000000000000008 R08: 0000000000000008 R09: 0000000000000001 R10: 0000000000080000 R11: 0000000000000246 R12: 00007f2082fe87b4 R13: 0000000000000001 R14: 000000000000001f R15: 00007ffd26df43b0 The buggy address belongs to the page: page:00000000d6818aba refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10a504 flags: 0x200000000000000() raw: 0200000000000000 0000000000000000 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88810a503f80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88810a504000: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff88810a504080: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88810a504100: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88810a504180: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ==================================================================