Messages in this thread | | | Date | Wed, 18 Dec 2019 07:15:09 -0800 | Subject | KASAN: use-after-free Read in hidinput_hid_event | From | syzbot <> |
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Hello,
syzbot found the following crash on:
HEAD commit: d533c992 usb: core: kcov: collect coverage from usb comple.. git tree: https://github.com/google/kasan.git usb-fuzzer console output: https://syzkaller.appspot.com/x/log.txt?x=100798b9e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=743b91162e9f9496 dashboard link: https://syzkaller.appspot.com/bug?extid=c961cb836a707f66e2f8 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15519951e00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=166f72fee00000
IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+c961cb836a707f66e2f8@syzkaller.appspotmail.com
================================================================== BUG: KASAN: use-after-free in test_bit include/asm-generic/bitops/instrumented-non-atomic.h:110 [inline] BUG: KASAN: use-after-free in hidinput_hid_event+0x1111/0x15d3 drivers/hid/hid-input.c:1381 Read of size 8 at addr ffff8881cfb19738 by task swapper/0/0
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0xef/0x16e lib/dump_stack.c:118 print_address_description.constprop.0+0x16/0x200 mm/kasan/report.c:374 __kasan_report.cold+0x37/0x7f mm/kasan/report.c:506 kasan_report+0xe/0x20 mm/kasan/common.c:639 check_memory_region_inline mm/kasan/generic.c:185 [inline] check_memory_region+0x152/0x1c0 mm/kasan/generic.c:192 test_bit include/asm-generic/bitops/instrumented-non-atomic.h:110 [inline] hidinput_hid_event+0x1111/0x15d3 drivers/hid/hid-input.c:1381 hid_process_event+0x4a0/0x580 drivers/hid/hid-core.c:1506 hid_input_field drivers/hid/hid-core.c:1550 [inline] hid_report_raw_event+0xabb/0xed0 drivers/hid/hid-core.c:1757 hid_input_report+0x315/0x3f0 drivers/hid/hid-core.c:1824 hid_irq_in+0x50e/0x690 drivers/hid/usbhid/hid-core.c:284 __usb_hcd_giveback
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