metapage_write_end_io: I/O error
ERROR: (device loop4): release_metapage: metapage_write_one() failed
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 1 UID: 0 PID: 18344 Comm: syz.4.3143 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:metapage_write_folio+0x9d/0xe10 fs/jfs/jfs_metapage.c:428
Code: 48 8d 7b 18 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 0b 0c 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 6b 18 48 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 df 0b 00 00 48 8b 6d 00 48 8d 45 28 48 89 c2 48
RSP: 0018:ffffc900105773b8 EFLAGS: 00010256
RAX: dffffc0000000000 RBX: ffffea000161d3c0 RCX: ffffc900072a1000
RDX: 0000000000000000 RSI: ffffffff83a33453 RDI: ffffea000161d3d8
RBP: 0000000000000000 R08: 0000000000000001 R09: fffff940002c3a7e
R10: ffffea000161d3f7 R11: 0000000000000000 R12: ffffea000161d3f4
R13: ffffc900105774e0 R14: 0000000000000082 R15: 0000000000000001
FS:  00007f14447f66c0(0000) GS:ffff888124443000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000032000 CR3: 000000003226f000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 metapage_write_one+0x300/0x4a0 fs/jfs/jfs_metapage.c:818
 force_metapage+0x1ba/0x370 fs/jfs/jfs_metapage.c:840
 txForce fs/jfs/jfs_txnmgr.c:2216 [inline]
 txCommit+0x2896/0x4a90 fs/jfs/jfs_txnmgr.c:1316
 diNewIAG fs/jfs/jfs_imap.c:2592 [inline]
 diAllocExt fs/jfs/jfs_imap.c:1905 [inline]
 diAllocAG+0xf9b/0x22e0 fs/jfs/jfs_imap.c:1669
 diAlloc+0x8bf/0x1830 fs/jfs/jfs_imap.c:1590
 ialloc+0x82/0x9a0 fs/jfs/jfs_inode.c:56
 jfs_mkdir+0x254/0xb50 fs/jfs/namei.c:226
 vfs_mkdir+0x361/0x850 fs/namei.c:5233
 filename_mkdirat+0x48b/0x5e0 fs/namei.c:5266
 __do_sys_mkdirat fs/namei.c:5287 [inline]
 __se_sys_mkdirat fs/namei.c:5284 [inline]
 __x64_sys_mkdirat+0x89/0xc0 fs/namei.c:5284
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f144659c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f14447f6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007f1446815fa0 RCX: 00007f144659c799
RDX: 00000000000001f4 RSI: 0000200000000080 RDI: ffffffffffffff9c
RBP: 00007f1446632c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1446816038 R14: 00007f1446815fa0 R15: 00007fffd229aa08
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:metapage_write_folio+0x9d/0xe10 fs/jfs/jfs_metapage.c:428
Code: 48 8d 7b 18 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 0b 0c 00 00 48 b8 00 00 00 00 00 fc ff df 48 8b 6b 18 48 89 ea 48 c1 ea 03 <80> 3c 02 00 0f 85 df 0b 00 00 48 8b 6d 00 48 8d 45 28 48 89 c2 48
RSP: 0018:ffffc900105773b8 EFLAGS: 00010256
RAX: dffffc0000000000 RBX: ffffea000161d3c0 RCX: ffffc900072a1000
RDX: 0000000000000000 RSI: ffffffff83a33453 RDI: ffffea000161d3d8
RBP: 0000000000000000 R08: 0000000000000001 R09: fffff940002c3a7e
R10: ffffea000161d3f7 R11: 0000000000000000 R12: ffffea000161d3f4
R13: ffffc900105774e0 R14: 0000000000000082 R15: 0000000000000001
FS:  00007f14447f66c0(0000) GS:ffff888124343000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f97fabe9e80 CR3: 000000003226f000 CR4: 0000000000350ef0
----------------
Code disassembly (best guess):
   0:	48 8d 7b 18          	lea    0x18(%rbx),%rdi
   4:	48 89 f8             	mov    %rdi,%rax
   7:	48 c1 e8 03          	shr    $0x3,%rax
   b:	80 3c 28 00          	cmpb   $0x0,(%rax,%rbp,1)
   f:	0f 85 0b 0c 00 00    	jne    0xc20
  15:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  1c:	fc ff df
  1f:	48 8b 6b 18          	mov    0x18(%rbx),%rbp
  23:	48 89 ea             	mov    %rbp,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	0f 85 df 0b 00 00    	jne    0xc13
  34:	48 8b 6d 00          	mov    0x0(%rbp),%rbp
  38:	48 8d 45 28          	lea    0x28(%rbp),%rax
  3c:	48 89 c2             	mov    %rax,%rdx
  3f:	48                   	rex.W