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WARNING: CPU: 0 PID: 29981 at drivers/gpu/drm/vkms/vkms_gem.c:37 vkms_gem_free_object+0x8d/0xa0 drivers/gpu/drm/vkms/vkms_gem.c:37
Kernel panic - not syncing: panic_on_warn set ...
CPU: 1 PID: 29981 Comm: syz-executor.0 Not tainted 5.9.0-rc2-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+0x1f0/0x31e lib/dump_stack.c:118
 panic+0x264/0x7a0 kernel/panic.c:231
 __warn+0x227/0x250 kernel/panic.c:600
 report_bug+0x1b1/0x2e0 lib/bug.c:198
 handle_bug+0x42/0x80 arch/x86/kernel/traps.c:234
 exc_invalid_op+0x16/0x40 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+0x8d/0xa0 drivers/gpu/drm/vkms/vkms_gem.c:37
Code: f9 01 f2 fc 49 8d be 30 02 00 00 e8 4d 7e d6 fc 4c 89 f7 e8 d5 d8 9d ff 4c 89 f7 5b 41 5e 41 5f e9 88 4b 31 fd e8 d3 01 f2 fc <0f> 0b eb ae e8 ca 01 f2 fc 0f 0b eb cd 66 0f 1f 44 00 00 55 41 57
RSP: 0018:ffffc90007b4fc58 EFLAGS: 00010293
RAX: ffffffff8482f64d RBX: ffff888034ad42c0 RCX: ffff8880a7ba0300
RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff888034ad4000
RBP: ffff888047b071e8 R08: ffffffff8420b409 R09: ffffed100695a801
R10: ffffed100695a801 R11: 0000000000000000 R12: ffff88809306db30
R13: dffffc0000000000 R14: ffff888034ad4000 R15: dffffc0000000000
 drm_gem_object_release_handle+0x150/0x160 drivers/gpu/drm/drm_gem.c:260
 idr_for_each+0x16b/0x260 lib/idr.c:208
 drm_gem_release+0x21/0x30 drivers/gpu/drm/drm_gem.c:947
 drm_file_free+0x7a3/0xa70 drivers/gpu/drm/drm_file.c:282
 drm_close_helper drivers/gpu/drm/drm_file.c:309 [inline]
 drm_release+0x33e/0x5c0 drivers/gpu/drm/drm_file.c:494
 __fput+0x34f/0x7b0 fs/file_table.c:281
 task_work_run+0x137/0x1c0 kernel/task_work.c:141
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:140 [inline]
 exit_to_user_mode_prepare+0xfa/0x1b0 kernel/entry/common.c:167
 syscall_exit_to_user_mode+0x5e/0x1a0 kernel/entry/common.c:242
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x416f01
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01
RSP: 002b:00007ffe65aa9460 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000008 RCX: 0000000000416f01
RDX: 0000000000000000 RSI: 0000000000001205 RDI: 0000000000000007
RBP: 0000000000000001 R08: 0000000070fcd205 R09: 0000000070fcd209
R10: 00007ffe65aa9550 R11: 0000000000000293 R12: 0000000001190690
R13: 000000000011d4bd R14: ffffffffffffffff R15: 000000000118cf4c
Kernel Offset: disabled
Rebooting in 86400 seconds..