syzbot


KASAN: user-memory-access Read in hidraw_ioctl

Status: closed as dup on 2019/08/13 13:43
Subsystems: input
[Documentation on labels]
Reported-by: syzbot+5a8c44432a51154ff6d5@syzkaller.appspotmail.com
First crash: 1745d, last: 1698d
Duplicate of
Title Repro Cause bisect Fix bisect Count Last Reported
BUG: bad usercopy in hidraw_ioctl hardening mm 5 1719d 1737d
Discussions (1)
Title Replies (including bot) Last reply
KASAN: user-memory-access Read in hidraw_ioctl 1 (2) 2019/08/13 13:42

Sample crash report:
==================================================================
BUG: KASAN: user-memory-access in _copy_to_user+0x124/0x150 lib/usercopy.c:27
Read of size 2829 at addr 0000004000000000 by task syz-executor.5/15333

CPU: 1 PID: 15333 Comm: syz-executor.5 Not tainted 5.3.0-rc7+ #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+0xca/0x13e lib/dump_stack.c:113
 __kasan_report.cold+0x5/0x33 mm/kasan/report.c:486
 kasan_report+0xe/0x12 mm/kasan/common.c:618
 check_memory_region_inline mm/kasan/generic.c:185 [inline]
 check_memory_region+0x128/0x190 mm/kasan/generic.c:192
 _copy_to_user+0x124/0x150 lib/usercopy.c:27
 copy_to_user include/linux/uaccess.h:152 [inline]
 hidraw_ioctl+0x39c/0xae0 drivers/hid/hidraw.c:392
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:509 [inline]
 do_vfs_ioctl+0xd2d/0x1330 fs/ioctl.c:696
 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:713
 __do_sys_ioctl fs/ioctl.c:720 [inline]
 __se_sys_ioctl fs/ioctl.c:718 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:718
 do_syscall_64+0xb7/0x580 arch/x86/entry/common.c:296
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4598e9
Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f193beb4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9
RDX: 00000000200003c0 RSI: 0000000090044802 RDI: 0000000000000003
RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f193beb56d4
R13: 00000000004c228c R14: 00000000004d5778 R15: 00000000ffffffff
==================================================================

Crashes (10):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2019/09/15 15:44 https://github.com/google/kasan.git usb-fuzzer f0df5c1be1e9 32d59357 .config console log report ci2-upstream-usb
2019/09/07 04:23 https://github.com/google/kasan.git usb-fuzzer f0df5c1be1e9 a60cb4cd .config console log report ci2-upstream-usb
2019/08/26 19:28 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 d21c5d9d .config console log report ci2-upstream-usb
2019/08/23 17:14 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 78ded196 .config console log report ci2-upstream-usb
2019/08/23 01:47 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 ca6f3cfa .config console log report ci2-upstream-usb
2019/08/21 02:53 https://github.com/google/kasan.git usb-fuzzer eea39f24f4a5 6b8391d0 .config console log report ci2-upstream-usb
2019/08/11 20:02 https://github.com/google/kasan.git usb-fuzzer e96407b49762 acb51638 .config console log report ci2-upstream-usb
2019/08/11 02:51 https://github.com/google/kasan.git usb-fuzzer e96407b49762 acb51638 .config console log report ci2-upstream-usb
2019/08/10 22:29 https://github.com/google/kasan.git usb-fuzzer e96407b49762 acb51638 .config console log report ci2-upstream-usb
2019/07/29 23:53 https://github.com/google/kasan.git usb-fuzzer 7f7867ff95bf f67095ee .config console log report ci2-upstream-usb
* Struck through repros no longer work on HEAD.