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: 20238 Comm: syz-executor.0 Not tainted 6.6.0-syzkaller-15758-ga12deb44f973 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__lock_acquire+0x109/0x5de0 kernel/locking/lockdep.c:5004
Code: 45 85 c9 0f 84 cc 0e 00 00 44 8b 05 11 d6 81 0b 45 85 c0 0f 84 be 0d 00 00 48 ba 00 00 00 00 00 fc ff df 4c 89 d1 48 c1 e9 03 <80> 3c 11 00 0f 85 e8 40 00 00 49 81 3a a0 79 b5 90 0f 84 96 0d 00
RSP: 0018:ffffc90029327830 EFLAGS: 00010002
RAX: ffff8880257d0000 RBX: 1ffff92005264f36 RCX: 000000000000002a
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000150
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000150 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88802c700000(0063) knlGS:00000000f7f3db40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7378020 CR3: 000000005eef1000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire kernel/locking/lockdep.c:5753 [inline]
 lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5718
 down_write+0x93/0x200 kernel/locking/rwsem.c:1579
 inode_lock include/linux/fs.h:802 [inline]
 simple_recursive_removal+0x175/0x810 fs/libfs.c:523
 debugfs_remove+0x5d/0x80 fs/debugfs/inode.c:764
 ptp_release+0x79/0x2b0 drivers/ptp/ptp_chardev.c:144
 ptp_read+0xf6/0x830 drivers/ptp/ptp_chardev.c:589
 posix_clock_read+0x138/0x1b0 kernel/time/posix-clock.c:51
 vfs_read+0x1ce/0x8f0 fs/read_write.c:468
 ksys_read+0x12f/0x250 fs/read_write.c:613
 do_syscall_32_irqs_on arch/x86/entry/common.c:164 [inline]
 __do_fast_syscall_32+0x61/0xe0 arch/x86/entry/common.c:230
 do_fast_syscall_32+0x33/0x70 arch/x86/entry/common.c:255
 entry_SYSENTER_compat_after_hwframe+0x70/0x7a
RIP: 0023:0xf7f63579
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 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00
RSP: 002b:00000000f7f3d5ac EFLAGS: 00000292 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020000080
RDX: 00000000000000a9 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__lock_acquire+0x109/0x5de0 kernel/locking/lockdep.c:5004
Code: 45 85 c9 0f 84 cc 0e 00 00 44 8b 05 11 d6 81 0b 45 85 c0 0f 84 be 0d 00 00 48 ba 00 00 00 00 00 fc ff df 4c 89 d1 48 c1 e9 03 <80> 3c 11 00 0f 85 e8 40 00 00 49 81 3a a0 79 b5 90 0f 84 96 0d 00
RSP: 0018:ffffc90029327830 EFLAGS: 00010002
RAX: ffff8880257d0000 RBX: 1ffff92005264f36 RCX: 000000000000002a
RDX: dffffc0000000000 RSI: 0000000000000000 RDI: 0000000000000150
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000150 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff88802c700000(0063) knlGS:00000000f7f3db40
CS:  0010 DS: 002b ES: 002b CR0: 0000000080050033
CR2: 00000000f7378020 CR3: 000000005eef1000 CR4: 0000000000350ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	45 85 c9             	test   %r9d,%r9d
   3:	0f 84 cc 0e 00 00    	je     0xed5
   9:	44 8b 05 11 d6 81 0b 	mov    0xb81d611(%rip),%r8d        # 0xb81d621
  10:	45 85 c0             	test   %r8d,%r8d
  13:	0f 84 be 0d 00 00    	je     0xdd7
  19:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  20:	fc ff df
  23:	4c 89 d1             	mov    %r10,%rcx
  26:	48 c1 e9 03          	shr    $0x3,%rcx
* 2a:	80 3c 11 00          	cmpb   $0x0,(%rcx,%rdx,1) <-- trapping instruction
  2e:	0f 85 e8 40 00 00    	jne    0x411c
  34:	49 81 3a a0 79 b5 90 	cmpq   $0xffffffff90b579a0,(%r10)
  3b:	0f                   	.byte 0xf
  3c:	84                   	.byte 0x84
  3d:	96                   	xchg   %eax,%esi
  3e:	0d                   	.byte 0xd