general protection fault, probably for non-canonical address 0xdffffc000000002a: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000150-0x0000000000000157] CPU: 1 PID: 3617 Comm: udevd Not tainted 5.18.0-rc3-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__lock_acquire+0x6a/0x1f80 kernel/locking/lockdep.c:4899 Code: ff df 8a 04 10 84 c0 0f 85 60 16 00 00 83 3d 60 95 79 0c 00 0f 84 10 15 00 00 83 3d 1f b7 17 0b 00 74 2c 4c 89 e8 48 c1 e8 03 <80> 3c 10 00 74 12 4c 89 ef e8 a8 bc 6f 00 48 ba 00 00 00 00 00 fc RSP: 0000:ffffc90003b2f9a8 EFLAGS: 00010002 RAX: 000000000000002a RBX: 0000000000000000 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000150 RBP: ffff88801c49d700 R08: 0000000000000001 R09: 0000000000000000 R10: fffffbfff1bc082e R11: 1ffffffff1bc082d R12: 0000000000000000 R13: 0000000000000150 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f4abcd9e840(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9913e80008 CR3: 000000004ac2b000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1a7/0x400 kernel/locking/lockdep.c:5641 down_write+0x95/0x170 kernel/locking/rwsem.c:1514 inode_lock include/linux/fs.h:748 [inline] simple_recursive_removal+0x8e/0x860 fs/libfs.c:276 debugfs_remove+0x45/0x60 fs/debugfs/inode.c:742 blk_mq_debugfs_unregister_queue_rqos+0x3c/0x60 block/blk-mq-debugfs.c:840 rq_qos_exit+0x23/0xf0 block/blk-rq-qos.c:297 disk_release_mq block/genhd.c:1142 [inline] disk_release+0x174/0x300 block/genhd.c:1168 device_release+0x98/0x1c0 kobject_cleanup+0x235/0x470 lib/kobject.c:673 blkdev_close+0x55/0x80 block/fops.c:512 __fput+0x3b9/0x820 fs/file_table.c:317 task_work_run+0x146/0x1c0 kernel/task_work.c:164 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x134/0x160 kernel/entry/common.c:169 exit_to_user_mode_prepare+0xad/0x110 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f4abc925fc3 Code: 48 ff ff ff b8 ff ff ff ff e9 3e ff ff ff 66 0f 1f 84 00 00 00 00 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 RSP: 002b:00007fff4bce76f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007f4abcd9e6a8 RCX: 00007f4abc925fc3 RDX: 000000000000001c RSI: 00007fff4bce6ef8 RDI: 0000000000000008 RBP: 0000561fd6cfa040 R08: 0000000000000007 R09: 0000561fd6ce1830 R10: 00007f4abc9b4fc0 R11: 0000000000000246 R12: 0000000000000002 R13: 0000561fd6ce2b00 R14: 0000000000000008 R15: 0000561fd6cd9910 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire+0x6a/0x1f80 kernel/locking/lockdep.c:4899 Code: ff df 8a 04 10 84 c0 0f 85 60 16 00 00 83 3d 60 95 79 0c 00 0f 84 10 15 00 00 83 3d 1f b7 17 0b 00 74 2c 4c 89 e8 48 c1 e8 03 <80> 3c 10 00 74 12 4c 89 ef e8 a8 bc 6f 00 48 ba 00 00 00 00 00 fc RSP: 0000:ffffc90003b2f9a8 EFLAGS: 00010002 RAX: 000000000000002a RBX: 0000000000000000 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000150 RBP: ffff88801c49d700 R08: 0000000000000001 R09: 0000000000000000 R10: fffffbfff1bc082e R11: 1ffffffff1bc082d R12: 0000000000000000 R13: 0000000000000150 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f4abcd9e840(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9913e80008 CR3: 000000004ac2b000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: df 8a 04 10 84 c0 fisttps -0x3f7beffc(%rdx) 6: 0f 85 60 16 00 00 jne 0x166c c: 83 3d 60 95 79 0c 00 cmpl $0x0,0xc799560(%rip) # 0xc799573 13: 0f 84 10 15 00 00 je 0x1529 19: 83 3d 1f b7 17 0b 00 cmpl $0x0,0xb17b71f(%rip) # 0xb17b73f 20: 74 2c je 0x4e 22: 4c 89 e8 mov %r13,%rax 25: 48 c1 e8 03 shr $0x3,%rax * 29: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1) <-- trapping instruction 2d: 74 12 je 0x41 2f: 4c 89 ef mov %r13,%rdi 32: e8 a8 bc 6f 00 callq 0x6fbcdf 37: 48 rex.W 38: ba 00 00 00 00 mov $0x0,%edx 3d: 00 fc add %bh,%ah