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BUG: KASAN: slab-out-of-bounds in mceusb_handle_command drivers/media/rc/mceusb.c:1146 [inline]
BUG: KASAN: slab-out-of-bounds in mceusb_process_ir_data drivers/media/rc/mceusb.c:1238 [inline]
BUG: KASAN: slab-out-of-bounds in mceusb_dev_recv+0x101e/0x12e0 drivers/media/rc/mceusb.c:1321
Read of size 1 at addr ffff8881d4730880 by task kworker/1:5/2773
CPU: 1 PID: 2773 Comm: kworker/1:5 Not tainted 5.4.0-rc1+ #0
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.constprop.0+0x36/0x50 mm/kasan/report.c:374
__kasan_report.cold+0x1a/0x33 mm/kasan/report.c:506
kasan_report+0xe/0x20 mm/kasan/common.c:634
mceusb_handle_command drivers/media/rc/mceusb.c:1146 [inline]
mceusb_process_ir_data drivers/media/rc/mceusb.c:1238 [inline]
mceusb_dev_recv+0x101e/0x12e0 drivers/media/rc/mceusb.c:1321
__usb_hcd_giveback_urb+0x1f2/0x470 drivers/usb/core/hcd.c:1654
usb_hcd_giveback_urb+0x368/0x420 drivers/usb/core/hcd.c:1719
dummy_timer+0x120f/0x2fa2 drivers/usb/gadget/udc/dummy_hcd.c:1965
call_timer_fn+0x179/0x650 kernel/time/timer.c:1404
expire_timers kernel/time/timer.c:1449 [inline]
__run_timers kernel/time/timer.c:1773 [inline]
__run_timers kernel/time/timer.c:1740 [inline]
run_timer_softirq+0x5e3/0x1490 kernel/time/timer.c:1786
__do_softirq+0x221/0x912 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:536 [inline]
smp_apic_timer_interrupt+0x12f/0x500 arch/x86/kernel/apic/apic.c:1137
apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830
RIP: 0010:arch_local_irq_restore arch/x86/include/asm/irqflags.h:85 [inline]
RIP: 0010:console_unlock+0xa2a/0xc40 kernel/printk/printk.c:2481
Code: 00 89 ee 48 c7 c7 40 59 d3 86 e8 41 b6 03 00 65 ff 0d f2 82 d9 7e e9 db f9 ff ff e8 50 b0 15 00 e8 6b db 1a 00 ff 74 24 30 9d 18 fe ff ff e8 3c b0 15 00 48 8d 7d 08 48 89 f8 48 c1 e8 03 42
RSP: 0018:ffff8881c8bcf6c8 EFLAGS: 00000216 ORIG_RAX: ffffffffffffff13
RAX: 0000000000000007 RBX: 0000000000000200 RCX: 0000000000000006
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff8881d9b1684c
RBP: 0000000000000000 R08: ffff8881d9b16000 R09: fffffbfff11b25a5
R10: fffffbfff11b25a4 R11: ffffffff88d92d27 R12: 0000000000000059
R13: dffffc0000000000 R14: ffffffff8293d990 R15: ffffffff87076f90
vprintk_emit+0x171/0x3e0 kernel/printk/printk.c:1996
dev_vprintk_emit+0x4fc/0x541 drivers/base/core.c:3312
dev_printk_emit+0xba/0xf1 drivers/base/core.c:3323
__dev_printk+0x1db/0x203 drivers/base/core.c:3335
_dev_info+0xd7/0x109 drivers/base/core.c:3381
announce_device drivers/usb/core/hub.c:2262 [inline]
usb_new_device.cold+0x394/0xe79 drivers/usb/core/hub.c:2516
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+0x1b5c/0x3640 drivers/usb/core/hub.c:5441
process_one_work+0x92b/0x1530 kernel/workqueue.c:2269
worker_thread+0x96/0xe20 kernel/workqueue.c:2415
kthread+0x318/0x420 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Allocated by task 83:
save_stack+0x1b/0x80 mm/kasan/common.c:69
set_track mm/kasan/common.c:77 [inline]
__kasan_kmalloc mm/kasan/common.c:510 [inline]
__kasan_kmalloc.constprop.0+0xbf/0xd0 mm/kasan/common.c:483
kmalloc include/linux/slab.h:557 [inline]
hcd_buffer_alloc+0x1ed/0x290 drivers/usb/core/buffer.c:132
usb_alloc_coherent+0x5d/0x80 drivers/usb/core/usb.c:910
mceusb_dev_probe+0x714/0x2f51 drivers/media/rc/mceusb.c:1674
usb_probe_interface+0x305/0x7a0 drivers/usb/core/driver.c:361
really_probe+0x281/0x6d0 drivers/base/dd.c:548
driver_probe_device+0x104/0x210 drivers/base/dd.c:721
__device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828
bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430
__device_attach+0x217/0x360 drivers/base/dd.c:894
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490
device_add+0xae6/0x16f0 drivers/base/core.c:2201
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+0x281/0x6d0 drivers/base/dd.c:548
driver_probe_device+0x104/0x210 drivers/base/dd.c:721
__device_attach_driver+0x1c2/0x220 drivers/base/dd.c:828
bus_for_each_drv+0x162/0x1e0 drivers/base/bus.c:430
__device_attach+0x217/0x360 drivers/base/dd.c:894
bus_probe_device+0x1e4/0x290 drivers/base/bus.c:490
device_add+0xae6/0x16f0 drivers/base/core.c:2201
usb_new_device.cold+0x6a4/0xe79 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+0x1b5c/0x3640 drivers/usb/core/hub.c:5441
process_one_work+0x92b/0x1530 kernel/workqueue.c:2269
process_scheduled_works kernel/workqueue.c:2331 [inline]
worker_thread+0x7ab/0xe20 kernel/workqueue.c:2417
kthread+0x318/0x420 kernel/kthread.c:255
ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:352
Freed by task 3662:
save_stack+0x1b/0x80 mm/kasan/common.c:69
set_track mm/kasan/common.c:77 [inline]
kasan_set_free_info mm/kasan/common.c:332 [inline]
__kasan_slab_free+0x130/0x180 mm/kasan/common.c:471
slab_free_hook mm/slub.c:1424 [inline]
slab_free_freelist_hook mm/slub.c:1475 [inline]
slab_free mm/slub.c:3018 [inline]
kfree+0xe4/0x2f0 mm/slub.c:3959
full_proxy_release+0x1ee/0x2e0 fs/debugfs/file.c:267
__fput+0x2d7/0x840 fs/file_table.c:280
task_work_run+0x13f/0x1c0 kernel/task_work.c:113
exit_task_work include/linux/task_work.h:22 [inline]
do_exit+0x8c4/0x2c00 kernel/exit.c:817
do_group_exit+0x125/0x340 kernel/exit.c:921
get_signal+0x466/0x23d0 kernel/signal.c:2734
do_signal+0x88/0x14e0 arch/x86/kernel/signal.c:815
exit_to_usermode_loop+0x1a2/0x200 arch/x86/entry/common.c:159
prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline]
syscall_return_slowpath arch/x86/entry/common.c:274 [inline]
do_syscall_64+0x45f/0x580 arch/x86/entry/common.c:300
entry_SYSCALL_64_after_hwframe+0x49/0xbe
The buggy address belongs to the object at ffff8881d4730780
which belongs to the cache kmalloc-256 of size 256
The buggy address is located 0 bytes to the right of
256-byte region [ffff8881d4730780, ffff8881d4730880)
The buggy address belongs to the page:
page:ffffea000751cc00 refcount:1 mapcount:0 mapping:ffff8881da002780 index:0x0
flags: 0x200000000000200(slab)
raw: 0200000000000200 ffffea000759b100 0000000400000004 ffff8881da002780
raw: 0000000000000000 00000000000c000c 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff8881d4730780: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
ffff8881d4730800: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
>ffff8881d4730880: fc fc fc fc fc fc fc fc fb fb fb fb fb fb fb fb
^
ffff8881d4730900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff8881d4730980: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc
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