------------[ cut here ]------------ Bad or missing usercopy whitelist? Kernel memory exposure attempt detected from SLUB object 'shmem_inode_cache' (offset 88, size 33)! WARNING: CPU: 1 PID: 4765 at mm/usercopy.c:74 usercopy_warn+0xe8/0x110 mm/usercopy.c:74 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 4765 Comm: syz-executor.4 Not tainted 5.3.0-rc5+ #28 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 panic+0x2a3/0x6da kernel/panic.c:219 __warn.cold+0x20/0x4a kernel/panic.c:576 report_bug+0x262/0x2a0 lib/bug.c:186 fixup_bug arch/x86/kernel/traps.c:179 [inline] fixup_bug arch/x86/kernel/traps.c:174 [inline] do_error_trap+0x12b/0x1e0 arch/x86/kernel/traps.c:272 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:291 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1028 RIP: 0010:usercopy_warn+0xe8/0x110 mm/usercopy.c:74 Code: e8 bd f8 d6 ff 49 89 e9 4c 89 e1 48 89 de 41 57 48 c7 c7 40 f5 cd 85 41 55 41 56 4c 8b 44 24 20 48 8b 54 24 18 e8 9d de ac ff <0f> 0b 48 83 c4 18 e9 45 ff ff ff 48 c7 c5 40 f3 cd 85 49 89 ee 49 RSP: 0018:ffff8881cdd9fbe8 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffffffff85cdf500 RCX: 0000000000000000 RDX: 000000000000862c RSI: ffffffff81288cfd RDI: ffffed1039bb3f6f RBP: ffffffff85cc2ca0 R08: ffff8881d65f6000 R09: fffffbfff11ad7a3 R10: fffffbfff11ad7a2 R11: ffffffff88d6bd17 R12: ffffffff86a6b0c8 R13: 0000000000000058 R14: ffffffff85cdf380 R15: 0000000000000021 check_heap_object mm/usercopy.c:234 [inline] __check_object_size mm/usercopy.c:280 [inline] __check_object_size+0x327/0x39a mm/usercopy.c:250 check_object_size include/linux/thread_info.h:119 [inline] check_copy_size include/linux/thread_info.h:150 [inline] copy_to_user include/linux/uaccess.h:151 [inline] hidraw_ioctl+0x65f/0xae0 drivers/hid/hidraw.c:440 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: 0033:0x459829 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:00007f73ab189c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459829 RDX: 0000000020001ac0 RSI: 0000000080404804 RDI: 000000000000000b RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f73ab18a6d4 R13: 00000000004c21c9 R14: 00000000004d5628 R15: 00000000ffffffff Kernel Offset: disabled Rebooting in 86400 seconds..