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WARNING: CPU: 1 PID: 14602 at drivers/gpu/drm/vkms/vkms_gem.c:37 vkms_gem_free_object+0x85/0xa0 drivers/gpu/drm/vkms/vkms_gem.c:37
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 14602 Comm: syz-executor.3 Not tainted 5.9.0-rc3-syzkaller #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+0x198/0x1fd lib/dump_stack.c:118
 panic+0x347/0x7c0 kernel/panic.c:231
 __warn.cold+0x20/0x46 kernel/panic.c:600
 report_bug+0x1bd/0x210 lib/bug.c:198
 handle_bug+0x38/0x90 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x14/0x40 arch/x86/kernel/traps.c:254
 asm_exc_invalid_op+0x12/0x20 arch/x86/include/asm/idtentry.h:536
RIP: 0010:vkms_gem_free_object+0x85/0xa0 drivers/gpu/drm/vkms/vkms_gem.c:37
Code: 00 75 2b e8 ed 17 0d fd 48 8d bd 30 02 00 00 e8 81 0c f2 fc 48 89 ef e8 09 62 a5 ff 48 89 ef 5d e9 50 b4 4c fd e8 cb 17 0d fd <0f> 0b eb a8 e8 c2 17 0d fd 0f 0b eb cc e8 09 2a 4d fd eb bb e8 02
RSP: 0018:ffffc90009c0fbb8 EFLAGS: 00010216
RAX: 000000000000a26d RBX: ffffffff846732b0 RCX: ffffc9000eeca000
RDX: 0000000000040000 RSI: ffffffff84673335 RDI: ffff888051467ac0
RBP: ffff888051467800 R08: 0000000000000001 R09: ffff888051467803
R10: 0000000000000001 R11: 0000000000000000 R12: ffff8882186e4c28
R13: ffff888051467808 R14: ffff888051467928 R15: ffff88808f385000
 drm_gem_object_free drivers/gpu/drm/drm_gem.c:990 [inline]
 kref_put include/linux/kref.h:65 [inline]
 __drm_gem_object_put include/drm/drm_gem.h:370 [inline]
 drm_gem_object_put include/drm/drm_gem.h:383 [inline]
 drm_gem_object_handle_put_unlocked+0x3ac/0x420 drivers/gpu/drm/drm_gem.c:238
 drm_gem_object_release_handle+0xf9/0x1b0 drivers/gpu/drm/drm_gem.c:260
 drm_gem_handle_delete+0x75/0xb0 drivers/gpu/drm/drm_gem.c:288
 drm_gem_close_ioctl+0xd6/0x120 drivers/gpu/drm/drm_gem.c:820
 drm_ioctl_kernel+0x220/0x2e0 drivers/gpu/drm/drm_ioctl.c:787
 drm_ioctl+0x4f1/0x982 drivers/gpu/drm/drm_ioctl.c:887
 drm_compat_ioctl+0x259/0x2f0 drivers/gpu/drm/drm_ioc32.c:984
 __do_compat_sys_ioctl+0x1d3/0x230 fs/ioctl.c:842
 do_syscall_32_irqs_on arch/x86/entry/common.c:84 [inline]
 __do_fast_syscall_32+0x57/0x80 arch/x86/entry/common.c:126
 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:149
 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c
RIP: 0023:0xf7f4d549
Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 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:00000000f55470cc EFLAGS: 00000296 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000040086409
RDX: 0000000020000500 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..