WARNING: CPU: 0 PID: 8651 at mm/slab_common.c:1031 kmalloc_slab+0x56/0x70 mm/slab_common.c:1031
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 8651 Comm: syz-executor4 Not tainted 4.19.0-rc6+ #173
kobject: 'loop2' (00000000b752cc98): kobject_uevent_env
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+0x1c4/0x2b4 lib/dump_stack.c:113
 panic+0x238/0x4e7 kernel/panic.c:184
kobject: 'loop2' (00000000b752cc98): fill_kobj_path: path = '/devices/virtual/block/loop2'
 __warn.cold.8+0x163/0x1ba kernel/panic.c:536
 report_bug+0x254/0x2d0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 do_error_trap+0x1fc/0x4d0 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:993
RIP: 0010:kmalloc_slab+0x56/0x70 mm/slab_common.c:1031
Code: c5 60 ab 00 89 5d c3 48 85 ff b8 10 00 00 00 74 f4 83 ef 01 c1 ef 03 0f b6 87 80 aa 00 89 eb d8 31 c0 81 e6 00 02 00 00 75 db <0f> 0b 5d c3 48 8b 04 c5 a0 aa 00 89 5d c3 66 90 66 2e 0f 1f 84 00
RSP: 0018:ffff88018c0c7ad8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00000000fffffff9 RCX: ffffc90009ec2000
RDX: 0000000000000038 RSI: 0000000000000000 RDI: 0000003ffffffe60
RBP: ffff88018c0c7ad8 R08: ffff88018c5ce6c0 R09: ffffed00385f5009
R10: ffff88018c0c7ba8 R11: ffff8801c2fa804f R12: 0000000000000000
R13: 0000000000000000 R14: ffff8801bfbd6500 R15: 00000000006080c0
 __do_kmalloc mm/slab.c:3713 [inline]
 __kmalloc+0x25/0x760 mm/slab.c:3727
 kmalloc include/linux/slab.h:518 [inline]
 kzalloc include/linux/slab.h:707 [inline]
 input_mt_init_slots+0xe5/0x4a0 drivers/input/input-mt.c:52
 uinput_create_device drivers/input/misc/uinput.c:335 [inline]
 uinput_ioctl_handler.isra.10+0x2049/0x2540 drivers/input/misc/uinput.c:876
 uinput_compat_ioctl+0x6b/0x90 drivers/input/misc/uinput.c:1060
 __do_compat_sys_ioctl fs/compat_ioctl.c:1419 [inline]
 __se_compat_sys_ioctl fs/compat_ioctl.c:1365 [inline]
 __ia32_compat_sys_ioctl+0x20e/0x630 fs/compat_ioctl.c:1365
 do_syscall_32_irqs_on arch/x86/entry/common.c:326 [inline]
 do_fast_syscall_32+0x34d/0xfb2 arch/x86/entry/common.c:397
 entry_SYSENTER_compat+0x70/0x7f arch/x86/entry/entry_64_compat.S:139
RIP: 0023:0xf7f97ca9
Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 0c 24 c3 8b 1c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90
RSP: 002b:00000000f5f930cc EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000005501
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
Kernel Offset: disabled
Rebooting in 86400 seconds..