Hello, When using Healer to fuzz the latest Linux kernel, the following crash was triggered. HEAD commit: 519d81956ee2 Linux 5.15-rc6 git tree: upstream console output: https://drive.google.com/file/d/1657ywLUsQk5HIV6DDfHHJydz_PPTdr6V/view?usp=sharing kernel config: https://drive.google.com/file/d/12PUnxIM1EPBgW4ZJmI7WJBRaY1lA83an/view?usp=sharing C reproducer: https://drive.google.com/file/d/1PV2erZe9uWRr7cGc3BLKkwBwaSVjksLc/view?usp=sharing Syzlang reproducer: https://drive.google.com/file/d/1A921cPkylfbW2cYCvbtImODZXd0mbg3l/view?usp=sharing If you fix this issue, please add the following tag to the commit: Reported-by: Hao Sun <sunhao.th@xxxxxxxxx> ------------[ cut here ]------------ WARNING: CPU: 0 PID: 32158 at block/genhd.c:1081 disk_release+0x1c0/0x230 block/genhd.c:1081 Modules linked in: CPU: 0 PID: 32158 Comm: syz-executor Not tainted 5.15.0-rc6 #4 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 RIP: 0010:disk_release+0x1c0/0x230 block/genhd.c:1081 Code: 00 00 00 00 fc ff df 48 8d 7b 28 48 89 fa 48 c1 ea 03 80 3c 02 00 75 4e 48 8b 7b 28 5b 5d 41 5c e9 b5 8b ff fd e8 20 2e a5 fd <0f> 0b e9 06 ff ff ff e8 34 be ec fd e9 2b ff ff ff e8 2a be ec fd RSP: 0018:ffffc900019efda0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffff88801a718800 RCX: ffff888113811c80 RDX: 0000000000000000 RSI: ffff888113811c80 RDI: 0000000000000002 RBP: ffff88801a718880 R08: ffffffff83d130a0 R09: ffffed100c7c6542 R10: ffff888063e32a0b R11: ffffed100c7c6541 R12: ffff888103988688 R13: 0000000000000002 R14: ffff8880194fa4d8 R15: ffff888014acee00 FS: 0000555555d8a940(0000) GS:ffff888135c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007efdcf048820 CR3: 000000010cd05000 CR4: 0000000000350ee0 Call Trace: device_release+0x9f/0x240 drivers/base/core.c:2232 kobject_cleanup lib/kobject.c:705 [inline] kobject_release lib/kobject.c:736 [inline] kref_put include/linux/kref.h:65 [inline] kobject_put+0x1c8/0x530 lib/kobject.c:753 put_device+0x1b/0x30 drivers/base/core.c:3503 blkdev_close+0x8d/0xb0 block/fops.c:460 __fput+0x288/0x9f0 fs/file_table.c:280 task_work_run+0xe0/0x1a0 kernel/task_work.c:164 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:175 [inline] exit_to_user_mode_prepare+0x28d/0x2a0 kernel/entry/common.c:207 __syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline] syscall_exit_to_user_mode+0x19/0x60 kernel/entry/common.c:300 do_syscall_64+0x42/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7efdcefd62cb Code: 03 00 00 00 0f 05 48 3d 00 f0 ff ff 77 41 c3 48 83 ec 18 89 7c 24 0c e8 63 fc ff ff 8b 7c 24 0c 41 89 c0 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 2f 44 89 c7 89 44 24 0c e8 a1 fc ff ff 8b 44 RSP: 002b:00007ffdc6a50700 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007ffdc6a50770 RCX: 00007efdcefd62cb RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000003 RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffdc6a505b0 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000003 R13: 0000000000000003 R14: 00007ffdc6a507b0 R15: 00007ffdc6a5076c
