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WARNING: CPU: 0 PID: 28313 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: 0 PID: 28313 Comm: syz-executor.3 Not tainted 5.9.0-rc8-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+0x382/0x7fb kernel/panic.c:231
 __warn.cold+0x20/0x4b 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 4d 6d e7 fc 48 8d bd 30 02 00 00 e8 a1 01 cc fc 48 89 ef e8 f9 13 a4 ff 48 89 ef 5d e9 c0 cd 27 fd e8 2b 6d e7 fc <0f> 0b eb a8 e8 22 6d e7 fc 0f 0b eb cc e8 49 46 28 fd eb bb e8 42
RSP: 0018:ffffc9001a707c08 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffffffff848ed160 RCX: ffffffff84330948
RDX: ffff8880450ea280 RSI: ffffffff848ed1e5 RDI: ffff8880a6c7a2c0
RBP: ffff8880a6c7a000 R08: 0000000000000001 R09: ffff8880a6c7a003
R10: 0000000000000001 R11: 0000000000000000 R12: ffff8882186ecc28
R13: ffff8880a6c7a008 R14: ffff8880a6c7a128 R15: ffff8880a466d800
 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
 idr_for_each+0x113/0x220 lib/idr.c:208
 drm_gem_release+0x22/0x30 drivers/gpu/drm/drm_gem.c:947
 drm_file_free.part.0+0x866/0xcb0 drivers/gpu/drm/drm_file.c:282
 drm_file_free drivers/gpu/drm/drm_file.c:251 [inline]
 drm_close_helper.isra.0+0x17d/0x1f0 drivers/gpu/drm/drm_file.c:309
 drm_release+0x1e6/0x530 drivers/gpu/drm/drm_file.c:494
 __fput+0x285/0x920 fs/file_table.c:281
 task_work_run+0xdd/0x190 kernel/task_work.c:141
 tracehook_notify_resume include/linux/tracehook.h:188 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:165 [inline]
 exit_to_user_mode_prepare+0x1e1/0x200 kernel/entry/common.c:192
 syscall_exit_to_user_mode+0x7e/0x2e0 kernel/entry/common.c:267
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x417781
Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 a4 1a 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:000000000169fbf0 EFLAGS: 00000293 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 0000000000417781
RDX: 0000001b32620000 RSI: 0000000000001231 RDI: 0000000000000003
RBP: 0000000000000001 R08: 000000001f443231 R09: 000000001f443235
R10: 000000000169fcd0 R11: 0000000000000293 R12: 000000000118c9a0
R13: 000000000118c9a0 R14: 00000000000003e8 R15: 000000000118bfd4
Kernel Offset: disabled
Rebooting in 86400 seconds..