general protection fault, probably for non-canonical address 0xdffffc000000003d: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000001e8-0x00000000000001ef]
CPU: 0 PID: 29425 Comm: segctord Not tainted 6.5.0-rc3-syzkaller-00123-g57012c57536f #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023
RIP: 0010:__lock_acquire+0x10d/0x7f70 kernel/locking/lockdep.c:5012
Code: 85 75 18 00 00 83 3d 15 1e 2d 0d 00 48 89 9c 24 10 01 00 00 0f 84 f8 0f 00 00 83 3d 5c ed b3 0b 00 74 34 48 89 d0 48 c1 e8 03 <42> 80 3c 00 00 74 1a 48 89 d7 e8 64 5e 79 00 48 8b 94 24 80 00 00
RSP: 0018:ffffc900035bee60 EFLAGS: 00010002
RAX: 000000000000003d RBX: 1ffff920006b7df0 RCX: 0000000000000000
RDX: 00000000000001e8 RSI: 0000000000000000 RDI: 00000000000001e8
RBP: ffffc900035bf128 R08: dffffc0000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1d30bae R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000000 R15: ffff888021de5940
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff97f69bd58 CR3: 00000000907a8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 lock_acquire+0x1e3/0x520 kernel/locking/lockdep.c:5761
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 folio_create_empty_buffers+0xce/0x750 fs/buffer.c:1678
 nilfs_lookup_dirty_data_buffers+0x35c/0x980 fs/nilfs2/segment.c:730
 nilfs_segctor_scan_file+0x23d/0xa10 fs/nilfs2/segment.c:1080
 nilfs_segctor_collect_blocks fs/nilfs2/segment.c:1202 [inline]
 nilfs_segctor_collect fs/nilfs2/segment.c:1529 [inline]
 nilfs_segctor_do_construct+0x1c74/0x6e30 fs/nilfs2/segment.c:2077
 nilfs_segctor_construct+0x145/0x8c0 fs/nilfs2/segment.c:2411
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2519 [inline]
 nilfs_segctor_thread+0x53a/0x1140 fs/nilfs2/segment.c:2602
 kthread+0x2b8/0x350 kernel/kthread.c:389
 ret_from_fork+0x2e/0x60 arch/x86/kernel/process.c:145
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:296
RIP: 0000:0x0
Code: Unable to access opcode bytes at 0xffffffffffffffd6.
RSP: 0000:0000000000000000 EFLAGS: 00000000 ORIG_RAX: 0000000000000000
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__lock_acquire+0x10d/0x7f70 kernel/locking/lockdep.c:5012
Code: 85 75 18 00 00 83 3d 15 1e 2d 0d 00 48 89 9c 24 10 01 00 00 0f 84 f8 0f 00 00 83 3d 5c ed b3 0b 00 74 34 48 89 d0 48 c1 e8 03 <42> 80 3c 00 00 74 1a 48 89 d7 e8 64 5e 79 00 48 8b 94 24 80 00 00
RSP: 0018:ffffc900035bee60 EFLAGS: 00010002
RAX: 000000000000003d RBX: 1ffff920006b7df0 RCX: 0000000000000000
RDX: 00000000000001e8 RSI: 0000000000000000 RDI: 00000000000001e8
RBP: ffffc900035bf128 R08: dffffc0000000000 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1d30bae R12: 0000000000000000
R13: 0000000000000001 R14: 0000000000000000 R15: ffff888021de5940
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000000907a8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	85 75 18             	test   %esi,0x18(%rbp)
   3:	00 00                	add    %al,(%rax)
   5:	83 3d 15 1e 2d 0d 00 	cmpl   $0x0,0xd2d1e15(%rip)        # 0xd2d1e21
   c:	48 89 9c 24 10 01 00 	mov    %rbx,0x110(%rsp)
  13:	00
  14:	0f 84 f8 0f 00 00    	je     0x1012
  1a:	83 3d 5c ed b3 0b 00 	cmpl   $0x0,0xbb3ed5c(%rip)        # 0xbb3ed7d
  21:	74 34                	je     0x57
  23:	48 89 d0             	mov    %rdx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 00 00       	cmpb   $0x0,(%rax,%r8,1) <-- trapping instruction
  2f:	74 1a                	je     0x4b
  31:	48 89 d7             	mov    %rdx,%rdi
  34:	e8 64 5e 79 00       	call   0x795e9d
  39:	48                   	rex.W
  3a:	8b                   	.byte 0x8b
  3b:	94                   	xchg   %eax,%esp
  3c:	24 80                	and    $0x80,%al