radio-si470x 1-1:0.128: non-zero urb status (-71) ================================================================== BUG: KASAN: use-after-free in si470x_int_in_callback.cold+0x27/0xbe /drivers/media/radio/si470x/radio-si470x-usb.c:378 Read of size 8 at addr ffff8881cf47bd28 by task kworker/0:2/107 CPU: 0 PID: 107 Comm: kworker/0:2 Not tainted 5.2.0-rc6+ #15 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: usb_hub_wq hub_event Call Trace: __dump_stack /lib/dump_stack.c:77 [inline] dump_stack+0xca/0x13e /lib/dump_stack.c:113 print_address_description+0x67/0x231 /mm/kasan/report.c:188 __kasan_report.cold+0x1a/0x32 /mm/kasan/report.c:317 kasan_report+0xe/0x20 /mm/kasan/common.c:614 si470x_int_in_callback.cold+0x27/0xbe /drivers/media/radio/si470x/radio-si470x-usb.c:378 __usb_hcd_giveback_urb+0x1f2/0x470 /drivers/usb/core/hcd.c:1758 usb_hcd_giveback_urb+0x34a/0x400 /drivers/usb/core/hcd.c:1823 dummy_timer+0x120f/0x2fa2 /drivers/usb/gadget/udc/dummy_hcd.c:1965 call_timer_fn+0x15e/0x5e0 /kernel/time/timer.c:1322 expire_timers /kernel/time/timer.c:1366 [inline] __run_timers /kernel/time/timer.c:1685 [inline] __run_timers /kernel/time/timer.c:1653 [inline] run_timer_softirq+0x597/0x1410 /kernel/time/timer.c:1698 __do_softirq+0x219/0x8b0 /kernel/softirq.c:292 invoke_softirq /kernel/softirq.c:373 [inline] irq_exit+0x17c/0x1a0 /kernel/softirq.c:413 exiting_irq /./arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0xe2/0x480 /arch/x86/kernel/apic/apic.c:1068 apic_timer_interrupt+0xf/0x20 /arch/x86/entry/entry_64.S:806 RIP: 0010:arch_local_irq_restore /./arch/x86/include/asm/irqflags.h:85 [inline] RIP: 0010:console_unlock+0x9db/0xbf0 /kernel/printk/printk.c:2471 Code: 00 89 ee 48 c7 c7 e0 eb b2 86 e8 50 a4 03 00 65 ff 0d 51 56 da 7e e9 11 fa ff ff e8 af 43 15 00 e8 ba 69 1a 00 ff 74 24 30 9d 31 fe ff ff e8 9b 43 15 00 48 8b bc 24 80 00 00 00 c7 05 d9 16 RSP: 0018:ffff8881d41c71f0 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000007 RBX: 0000000000000200 RCX: 1ffff1103a8b9d24 RDX: 0000000000000000 RSI: ffff8881d45ce900 RDI: ffff8881d45ce834 RBP: 0000000000000000 R08: ffff8881d45ce000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 000000000000004e R13: ffffffff82893850 R14: ffffffff86e58ac0 R15: dffffc0000000000 vprintk_emit+0x171/0x3e0 /kernel/printk/printk.c:1986 vprintk_func+0x75/0x113 /kernel/printk/printk_safe.c:386 printk+0xba/0xed /kernel/printk/printk.c:2046 really_probe.cold+0x69/0x122 /drivers/base/dd.c:577 driver_probe_device+0x104/0x210 /drivers/base/dd.c:670 __device_attach_driver+0x1c2/0x220 /drivers/base/dd.c:777 bus_for_each_drv+0x15c/0x1e0 /drivers/base/bus.c:454 __device_attach+0x217/0x360 /drivers/base/dd.c:843 bus_probe_device+0x1e4/0x290 /drivers/base/bus.c:514 device_add+0xae6/0x16f0 /drivers/base/core.c:2111 usb_set_configuration+0xdf6/0x1670 /drivers/usb/core/message.c:2023 generic_probe+0x9d/0xd5 /drivers/usb/core/generic.c:210 usb_probe_device+0x99/0x100 /drivers/usb/core/driver.c:266 really_probe+0x281/0x660 /drivers/base/dd.c:509 driver_probe_device+0x104/0x210 /drivers/base/dd.c:670 __device_attach_driver+0x1c2/0x220 /drivers/base/dd.c:777 bus_for_each_drv+0x15c/0x1e0 /drivers/base/bus.c:454 __device_attach+0x217/0x360 /drivers/base/dd.c:843 bus_probe_device+0x1e4/0x290 /drivers/base/bus.c:514 device_add+0xae6/0x16f0 /drivers/base/core.c:2111 usb_new_device.cold+0x6a4/0xe61 /drivers/usb/core/hub.c:2536 hub_port_connect /drivers/usb/core/hub.c:5098 [inline] hub_port_connect_change /drivers/usb/core/hub.c:5213 [inline] port_event /drivers/usb/core/hub.c:5359 [inline] hub_event+0x1abd/0x3550 /drivers/usb/core/hub.c:5441 process_one_work+0x905/0x1570 /kernel/workqueue.c:2269 worker_thread+0x96/0xe20 /kernel/workqueue.c:2415 kthread+0x30b/0x410 /kernel/kthread.c:255 ret_from_fork+0x24/0x30 /arch/x86/entry/entry_64.S:352 Allocated by task 107: save_stack+0x1b/0x80 /mm/kasan/common.c:71 set_track /mm/kasan/common.c:79 [inline] __kasan_kmalloc /mm/kasan/common.c:489 [inline] __kasan_kmalloc.constprop.0+0xbf/0xd0 /mm/kasan/common.c:462 kmalloc /./include/linux/slab.h:547 [inline] kzalloc /./include/linux/slab.h:742 [inline] si470x_usb_driver_probe+0x51/0xf14 /drivers/media/radio/si470x/radio-si470x-usb.c:576 usb_probe_interface+0x305/0x7a0 /drivers/usb/core/driver.c:361 really_probe+0x281/0x660 /drivers/base/dd.c:509 driver_probe_device+0x104/0x210 /drivers/base/dd.c:670 __device_attach_driver+0x1c2/0x220 /drivers/base/dd.c:777 bus_for_each_drv+0x15c/0x1e0 /drivers/base/bus.c:454 __device_attach+0x217/0x360 /drivers/base/dd.c:843 bus_probe_device+0x1e4/0x290 /drivers/base/bus.c:514 device_add+0xae6/0x16f0 /drivers/base/core.c:2111 usb_set_configuration+0xdf6/0x1670 /drivers/usb/core/message.c:2023 generic_probe+0x9d/0xd5 /drivers/usb/core/generic.c:210 usb_probe_device+0x99/0x100 /drivers/usb/core/driver.c:266 really_probe+0x281/0x660 /drivers/base/dd.c:509 driver_probe_device+0x104/0x210 /drivers/base/dd.c:670 __device_attach_driver+0x1c2/0x220 /drivers/base/dd.c:777 bus_for_each_drv+0x15c/0x1e0 /drivers/base/bus.c:454 __device_attach+0x217/0x360 /drivers/base/dd.c:843 bus_probe_device+0x1e4/0x290 /drivers/base/bus.c:514 device_add+0xae6/0x16f0 /drivers/base/core.c:2111 usb_new_device.cold+0x6a4/0xe61 /drivers/usb/core/hub.c:2536 hub_port_connect /drivers/usb/core/hub.c:5098 [inline] hub_port_connect_change /drivers/usb/core/hub.c:5213 [inline] port_event /drivers/usb/core/hub.c:5359 [inline] hub_event+0x1abd/0x3550 /drivers/usb/core/hub.c:5441 process_one_work+0x905/0x1570 /kernel/workqueue.c:2269 worker_thread+0x96/0xe20 /kernel/workqueue.c:2415 kthread+0x30b/0x410 /kernel/kthread.c:255 ret_from_fork+0x24/0x30 /arch/x86/entry/entry_64.S:352 Freed by task 107: save_stack+0x1b/0x80 /mm/kasan/common.c:71 set_track /mm/kasan/common.c:79 [inline] __kasan_slab_free+0x130/0x180 /mm/kasan/common.c:451 slab_free_hook /mm/slub.c:1421 [inline] slab_free_freelist_hook /mm/slub.c:1448 [inline] slab_free /mm/slub.c:2994 [inline] kfree+0xd7/0x280 /mm/slub.c:3949 si470x_usb_driver_probe+0xaf5/0xf14 /drivers/media/radio/si470x/radio-si470x-usb.c:764 usb_probe_interface+0x305/0x7a0 /drivers/usb/core/driver.c:361 really_probe+0x281/0x660 /drivers/base/dd.c:509 driver_probe_device+0x104/0x210 /drivers/base/dd.c:670 __device_attach_driver+0x1c2/0x220 /drivers/base/dd.c:777 bus_for_each_drv+0x15c/0x1e0 /drivers/base/bus.c:454 __device_attach+0x217/0x360 /drivers/base/dd.c:843 bus_probe_device+0x1e4/0x290 /drivers/base/bus.c:514 device_add+0xae6/0x16f0 /drivers/base/core.c:2111 usb_set_configuration+0xdf6/0x1670 /drivers/usb/core/message.c:2023 generic_probe+0x9d/0xd5 /drivers/usb/core/generic.c:210 usb_probe_device+0x99/0x100 /drivers/usb/core/driver.c:266 really_probe+0x281/0x660 /drivers/base/dd.c:509 driver_probe_device+0x104/0x210 /drivers/base/dd.c:670 __device_attach_driver+0x1c2/0x220 /drivers/base/dd.c:777 bus_for_each_drv+0x15c/0x1e0 /drivers/base/bus.c:454 __device_attach+0x217/0x360 /drivers/base/dd.c:843 bus_probe_device+0x1e4/0x290 /drivers/base/bus.c:514 device_add+0xae6/0x16f0 /drivers/base/core.c:2111 usb_new_device.cold+0x6a4/0xe61 /drivers/usb/core/hub.c:2536 hub_port_connect /drivers/usb/core/hub.c:5098 [inline] hub_port_connect_change /drivers/usb/core/hub.c:5213 [inline] port_event /drivers/usb/core/hub.c:5359 [inline] hub_event+0x1abd/0x3550 /drivers/usb/core/hub.c:5441 process_one_work+0x905/0x1570 /kernel/workqueue.c:2269 worker_thread+0x96/0xe20 /kernel/workqueue.c:2415 kthread+0x30b/0x410 /kernel/kthread.c:255 ret_from_fork+0x24/0x30 /arch/x86/entry/entry_64.S:352 The buggy address belongs to the object at ffff8881cf47b300 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 2600 bytes inside of 4096-byte region [ffff8881cf47b300, ffff8881cf47c300) The buggy address belongs to the page: page:ffffea00073d1e00 refcount:1 mapcount:0 mapping:ffff8881dac02600 index:0x0 compound_mapcount: 0 flags: 0x200000000010200(slab|head) raw: 0200000000010200 ffffea00073d0a00 0000000200000002 ffff8881dac02600 raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8881cf47bc00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881cf47bc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff8881cf47bd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff8881cf47bd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff8881cf47be00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================