================================================================== BUG: KASAN: use-after-free in htc_process_conn_rsp drivers/net/wireless/ath/ath9k/htc_hst.c:131 [inline] BUG: KASAN: use-after-free in ath9k_htc_rx_msg+0xa25/0xaf0 drivers/net/wireless/ath/ath9k/htc_hst.c:443 Write of size 2 at addr ffff8881c48eb790 by task systemd-udevd/154 CPU: 0 PID: 154 Comm: systemd-udevd Not tainted 5.7.0-rc6-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+0xd3/0x415 mm/kasan/report.c:382 __kasan_report.cold+0x37/0x7d mm/kasan/report.c:511 kasan_report+0x33/0x50 mm/kasan/common.c:625 htc_process_conn_rsp drivers/net/wireless/ath/ath9k/htc_hst.c:131 [inline] ath9k_htc_rx_msg+0xa25/0xaf0 drivers/net/wireless/ath/ath9k/htc_hst.c:443 ath9k_hif_usb_reg_in_cb+0x1c0/0x630 drivers/net/wireless/ath/ath9k/hif_usb.c:718 __usb_hcd_giveback_urb+0x29a/0x550 drivers/usb/core/hcd.c:1650 usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1716 dummy_timer+0x125e/0x32b4 drivers/usb/gadget/udc/dummy_hcd.c:1967 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:lock_is_held_type+0x1d2/0x290 kernel/locking/lockdep.c:4976 Code: b6 0c 11 48 89 fa 83 e2 07 83 c2 03 38 ca 7c 08 84 c9 0f 85 bc 00 00 00 83 ab 7c 08 00 00 01 75 2c ff 74 24 08 9d 48 83 c4 18 <5b> 5d 41 5c 41 5d 41 5e 41 5f c3 31 c0 eb a5 48 83 c4 18 b8 01 00 RSP: 0018:ffff8881cf4bf740 EFLAGS: 00000292 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: ffff8881cfa0ca40 RCX: 0000000000000000 RDX: 0000000000000007 RSI: 1ffff11039f41a57 RDI: ffff8881cfa0d2bc RBP: ffff8881cfa0ca40 R08: ffff8881cfa0ca40 R09: fffffbfff0e3d8a1 R10: ffffffff871ec507 R11: fffffbfff0e3d8a0 R12: ffff8881cfa0d2b8 R13: ffffed1039f41a57 R14: 0000000000000000 R15: ffffffff87111260 lock_is_held include/linux/lockdep.h:406 [inline] rcu_preempt_sleep_check include/linux/rcupdate.h:272 [inline] ___might_sleep+0x1c5/0x2b0 kernel/sched/core.c:6766 dput+0x4d/0xdf0 fs/dcache.c:843 step_into+0x2d9/0x1b60 fs/namei.c:1685 walk_component+0x171/0x6a0 fs/namei.c:1852 link_path_walk.part.0+0x631/0xb50 fs/namei.c:2169 link_path_walk fs/namei.c:2098 [inline] path_openat+0x25a/0x2740 fs/namei.c:3342 do_filp_open+0x192/0x260 fs/namei.c:3373 do_sys_openat2+0x585/0x7d0 fs/open.c:1148 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 RIP: 0033:0x7ff5f201b9b1 Code: f7 d8 bf ff ff ff ff 64 89 02 eb cb 0f 1f 00 66 2e 0f 1f 84 00 00 00 00 00 80 3f 00 74 1b be 00 08 09 00 b8 02 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 1f 89 c7 e9 00 ff ff ff 48 8b 05 b1 54 2e 00 RSP: 002b:00007ffe0c344788 EFLAGS: 00000202 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 000056413ca0db90 RCX: 00007ff5f201b9b1 RDX: 00000000000000fd RSI: 0000000000090800 RDI: 000056413c9ddb40 RBP: 00007ff5f31d0710 R08: 000056413c9f0610 R09: 0000000000001010 R10: 00007ff5f2301b58 R11: 0000000000000202 R12: 0000000000000000 R13: 000056413c9ddb40 R14: 00000000000000fd R15: 000056413c9ddb40 Allocated by task 3043: 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 kmalloc include/linux/slab.h:555 [inline] kzalloc include/linux/slab.h:669 [inline] usb_set_configuration+0x2c4/0x1850 drivers/usb/core/message.c:1854 usb_generic_driver_probe+0x9d/0xe0 drivers/usb/core/generic.c:241 usb_probe_device+0xd9/0x230 drivers/usb/core/driver.c:272 really_probe+0x290/0xac0 drivers/base/dd.c:520 driver_probe_device+0x223/0x350 drivers/base/dd.c:697 __device_attach_driver+0x1d1/0x290 drivers/base/dd.c:804 bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:431 __device_attach+0x21a/0x390 drivers/base/dd.c:870 bus_probe_device+0x1e4/0x290 drivers/base/bus.c:491 device_add+0x1367/0x1c40 drivers/base/core.c:2538 usb_new_device.cold+0x552/0xf6e drivers/usb/core/hub.c:2554 hub_port_connect drivers/usb/core/hub.c:5208 [inline] hub_port_connect_change drivers/usb/core/hub.c:5348 [inline] port_event drivers/usb/core/hub.c:5494 [inline] hub_event+0x226d/0x43c0 drivers/usb/core/hub.c:5576 process_one_work+0x965/0x1630 kernel/workqueue.c:2268 worker_thread+0x96/0xe20 kernel/workqueue.c:2414 kthread+0x326/0x430 kernel/kthread.c:268 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351 Freed by task 3043: 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] kfree+0xd5/0x300 mm/slub.c:4026 device_release+0x71/0x200 drivers/base/core.c:1375 kobject_cleanup lib/kobject.c:693 [inline] kobject_release lib/kobject.c:722 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x256/0x550 lib/kobject.c:739 put_device+0x1b/0x30 drivers/base/core.c:2637 usb_disable_device+0x304/0x790 drivers/usb/core/message.c:1252 usb_disconnect+0x293/0x900 drivers/usb/core/hub.c:2217 hub_port_connect drivers/usb/core/hub.c:5059 [inline] hub_port_connect_change drivers/usb/core/hub.c:5348 [inline] port_event drivers/usb/core/hub.c:5494 [inline] hub_event+0x1abf/0x43c0 drivers/usb/core/hub.c:5576 process_one_work+0x965/0x1630 kernel/workqueue.c:2268 worker_thread+0x96/0xe20 kernel/workqueue.c:2414 kthread+0x326/0x430 kernel/kthread.c:268 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:351 The buggy address belongs to the object at ffff8881c48eb000 which belongs to the cache kmalloc-2k of size 2048 The buggy address is located 1936 bytes inside of 2048-byte region [ffff8881c48eb000, ffff8881c48eb800) The buggy address belongs to the page: page:ffffea0007123a00 refcount:1 mapcount:0 mapping:0000000013db2ed5 index:0x0 head:ffffea0007123a00 order:3 compound_mapcount:0 compound_pincount:0 flags: 0x200000000010200(slab|head) raw: 0200000000010200 dead000000000100 dead000000000122 ffff8881da00c000 raw: 0000000000000000 0000000000080008 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881c48eb680: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881c48eb700: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8881c48eb780: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8881c48eb800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff8881c48eb880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================