Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] PREEMPT SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 6177 Comm: syz.3.15 Not tainted 6.12.0-rc1-next-20241003-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:metapage_write_folio+0xb7/0x10e0 fs/jfs/jfs_metapage.c:346
Code: 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 6d 3c cf fe 48 8b 1b 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 4b 3c cf fe 4c 8b 2b 48 8d 84 24 b0
RSP: 0018:ffffc9000347f2a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: ffffc90016199000 RSI: 000000000001d9fb RDI: 000000000001d9fc
RBP: ffffc9000347f3b0 R08: ffffea0000c16db7 R09: 1ffffd4000182db6
R10: dffffc0000000000 R11: fffff94000182db7 R12: ffffea0000c16db4
R13: ffffea0000c16d80 R14: dffffc0000000000 R15: ffffc9000347f400
FS:  00007fc3a9f6c6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6f20aa1378 CR3: 00000000680c8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 metapage_write_one+0x2c7/0x680 fs/jfs/jfs_metapage.c:710
 force_metapage+0x10a/0x2b0 fs/jfs/jfs_metapage.c:732
 txForce fs/jfs/jfs_txnmgr.c:2215 [inline]
 txCommit+0x6250/0x6b90 fs/jfs/jfs_txnmgr.c:1315
 diNewIAG fs/jfs/jfs_imap.c:2592 [inline]
 diAllocExt fs/jfs/jfs_imap.c:1905 [inline]
 diAllocAG+0x17ab/0x1e50 fs/jfs/jfs_imap.c:1669
 diAlloc+0x1d2/0x1630 fs/jfs/jfs_imap.c:1590
 ialloc+0x8f/0x900 fs/jfs/jfs_inode.c:56
 jfs_mkdir+0x1c5/0xba0 fs/jfs/namei.c:225
 vfs_mkdir+0x2f9/0x4f0 fs/namei.c:4257
 do_mkdirat+0x264/0x3a0 fs/namei.c:4280
 __do_sys_mkdirat fs/namei.c:4295 [inline]
 __se_sys_mkdirat fs/namei.c:4293 [inline]
 __x64_sys_mkdirat+0x87/0xa0 fs/namei.c:4293
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc3a917dff9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc3a9f6c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 00007fc3a9336058 RCX: 00007fc3a917dff9
RDX: 0000000000000135 RSI: 0000000020000140 RDI: ffffffffffffff9c
RBP: 00007fc3a91f0296 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fc3a9336058 R15: 00007ffeb7369938
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:metapage_write_folio+0xb7/0x10e0 fs/jfs/jfs_metapage.c:346
Code: 48 89 d8 48 c1 e8 03 42 80 3c 30 00 74 08 48 89 df e8 6d 3c cf fe 48 8b 1b 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <80> 3c 08 00 74 08 48 89 df e8 4b 3c cf fe 4c 8b 2b 48 8d 84 24 b0
RSP: 0018:ffffc9000347f2a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: ffffc90016199000 RSI: 000000000001d9fb RDI: 000000000001d9fc
RBP: ffffc9000347f3b0 R08: ffffea0000c16db7 R09: 1ffffd4000182db6
R10: dffffc0000000000 R11: fffff94000182db7 R12: ffffea0000c16db4
R13: ffffea0000c16d80 R14: dffffc0000000000 R15: ffffc9000347f400
FS:  00007fc3a9f6c6c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffd99d35dc8 CR3: 00000000680c8000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	48 89 d8             	mov    %rbx,%rax
   3:	48 c1 e8 03          	shr    $0x3,%rax
   7:	42 80 3c 30 00       	cmpb   $0x0,(%rax,%r14,1)
   c:	74 08                	je     0x16
   e:	48 89 df             	mov    %rbx,%rdi
  11:	e8 6d 3c cf fe       	call   0xfecf3c83
  16:	48 8b 1b             	mov    (%rbx),%rbx
  19:	48 89 d8             	mov    %rbx,%rax
  1c:	48 c1 e8 03          	shr    $0x3,%rax
  20:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  27:	fc ff df
* 2a:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1) <-- trapping instruction
  2e:	74 08                	je     0x38
  30:	48 89 df             	mov    %rbx,%rdi
  33:	e8 4b 3c cf fe       	call   0xfecf3c83
  38:	4c 8b 2b             	mov    (%rbx),%r13
  3b:	48                   	rex.W
  3c:	8d                   	.byte 0x8d
  3d:	84 24 b0             	test   %ah,(%rax,%rsi,4)