general protection fault, probably for non-canonical address 0xdffffc000000002d: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000168-0x000000000000016f]
CPU: 0 PID: 3608 Comm: segctord Not tainted 6.1.0-rc3-syzkaller-00299-g2f5065a0bc9d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:_compound_head include/linux/page-flags.h:253 [inline]
RIP: 0010:lock_page+0x3b/0x2f0 include/linux/pagemap.h:958
Code: 5f 55 fe be bc 03 00 00 48 c7 c7 80 61 31 8a e8 fb 91 2b fe 2e 2e 2e 31 c0 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 64 02 00 00 4c 8b 6d 08 31 ff 4d 89 ec 41 83 e4
RSP: 0018:ffffc90003f7fb10 EFLAGS: 00010216
RAX: dffffc0000000000 RBX: ffff888071f48ae0 RCX: 0000000000000001
RDX: 000000000000002d RSI: 0000000000000000 RDI: ffff88801f5a09e0
RBP: 0000000000000160 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000160
R13: dffffc0000000000 R14: 0000000000000168 R15: ffffea0001bc6000
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f51c55561d0 CR3: 000000000bc8e000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 nilfs_segctor_prepare_write fs/nilfs2/segment.c:1664 [inline]
 nilfs_segctor_do_construct+0x2049/0x6af0 fs/nilfs2/segment.c:2074
 nilfs_segctor_construct+0x8e3/0xb30 fs/nilfs2/segment.c:2379
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2487 [inline]
 nilfs_segctor_thread+0x3c3/0xf30 fs/nilfs2/segment.c:2570
 kthread+0x2e4/0x3a0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:_compound_head include/linux/page-flags.h:253 [inline]
RIP: 0010:lock_page+0x3b/0x2f0 include/linux/pagemap.h:958
Code: 5f 55 fe be bc 03 00 00 48 c7 c7 80 61 31 8a e8 fb 91 2b fe 2e 2e 2e 31 c0 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80> 3c 02 00 0f 85 64 02 00 00 4c 8b 6d 08 31 ff 4d 89 ec 41 83 e4
RSP: 0018:ffffc90003f7fb10 EFLAGS: 00010216
RAX: dffffc0000000000 RBX: ffff888071f48ae0 RCX: 0000000000000001
RDX: 000000000000002d RSI: 0000000000000000 RDI: ffff88801f5a09e0
RBP: 0000000000000160 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000160
R13: dffffc0000000000 R14: 0000000000000168 R15: ffffea0001bc6000
FS:  0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f51c55561d0 CR3: 000000000bc8e000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess), 3 bytes skipped:
   0:	be bc 03 00 00       	mov    $0x3bc,%esi
   5:	48 c7 c7 80 61 31 8a 	mov    $0xffffffff8a316180,%rdi
   c:	e8 fb 91 2b fe       	callq  0xfe2b920c
  11:	2e 2e 2e 31 c0       	cs cs cs xor %eax,%eax
  16:	4c 89 f2             	mov    %r14,%rdx
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	48 c1 ea 03          	shr    $0x3,%rdx
* 27:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2b:	0f 85 64 02 00 00    	jne    0x295
  31:	4c 8b 6d 08          	mov    0x8(%rbp),%r13
  35:	31 ff                	xor    %edi,%edi
  37:	4d 89 ec             	mov    %r13,%r12
  3a:	41                   	rex.B
  3b:	83                   	.byte 0x83
  3c:	e4                   	.byte 0xe4