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: 1 UID: 0 PID: 5924 Comm: syz.2.3 Not tainted 6.14.0-rc2-syzkaller-00039-g09fbf3d50205 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:metapage_write_folio+0xab/0xf20 fs/jfs/jfs_metapage.c:346
Code: 5f 18 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 37 87 d2 fe 4c 8d b4 24 b0 00 00 00 48 8b 1b 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 16 87 d2 fe 48 8b 03 48 89 44 24
RSP: 0018:ffffc900046af1a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000c6f9000 RSI: 000000000000fd50 RDI: 000000000000fd51
RBP: ffffc900046af2b0 R08: ffffea000082f677 R09: 1ffffd4000105ece
R10: dffffc0000000000 R11: fffff94000105ecf R12: 1ffff920008d5e40
R13: dffffc0000000000 R14: ffffc900046af250 R15: ffffea000082f640
FS:  00007fec42ea36c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007feb9774f000 CR3: 0000000034436000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 metapage_write_one+0x292/0x4b0 fs/jfs/jfs_metapage.c:710
 force_metapage+0x1ae/0x370 fs/jfs/jfs_metapage.c:732
 txForce fs/jfs/jfs_txnmgr.c:2215 [inline]
 txCommit+0x6250/0x6b90 fs/jfs/jfs_txnmgr.c:1315
 duplicateIXtree+0x33f/0x550 fs/jfs/jfs_imap.c:3019
 diNewIAG fs/jfs/jfs_imap.c:2597 [inline]
 diAllocExt fs/jfs/jfs_imap.c:1905 [inline]
 diAllocAG+0x17dc/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:4313
 do_mkdirat+0x264/0x3a0 fs/namei.c:4336
 __do_sys_mkdir fs/namei.c:4356 [inline]
 __se_sys_mkdir fs/namei.c:4354 [inline]
 __x64_sys_mkdir+0x6c/0x80 fs/namei.c:4354
 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: 0033:0x7fec41f8cde9
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:00007fec42ea3038 EFLAGS: 00000246 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 00007fec421a5fa0 RCX: 00007fec41f8cde9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000400000000000
RBP: 00007fec4200e2a0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fec421a5fa0 R15: 00007ffec56516e8
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:metapage_write_folio+0xab/0xf20 fs/jfs/jfs_metapage.c:346
Code: 5f 18 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 37 87 d2 fe 4c 8d b4 24 b0 00 00 00 48 8b 1b 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 16 87 d2 fe 48 8b 03 48 89 44 24
RSP: 0018:ffffc900046af1a0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000080000
RDX: ffffc9000c6f9000 RSI: 000000000000fd50 RDI: 000000000000fd51
RBP: ffffc900046af2b0 R08: ffffea000082f677 R09: 1ffffd4000105ece
R10: dffffc0000000000 R11: fffff94000105ecf R12: 1ffff920008d5e40
R13: dffffc0000000000 R14: ffffc900046af250 R15: ffffea000082f640
FS:  00007fec42ea36c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fb23ead7d60 CR3: 0000000034436000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	5f                   	pop    %rdi
   1:	18 48 89             	sbb    %cl,-0x77(%rax)
   4:	d8 48 c1             	fmuls  -0x3f(%rax)
   7:	e8 03 42 80 3c       	call   0x3c80420f
   c:	28 00                	sub    %al,(%rax)
   e:	74 08                	je     0x18
  10:	48 89 df             	mov    %rbx,%rdi
  13:	e8 37 87 d2 fe       	call   0xfed2874f
  18:	4c 8d b4 24 b0 00 00 	lea    0xb0(%rsp),%r14
  1f:	00
  20:	48 8b 1b             	mov    (%rbx),%rbx
  23:	48 89 d8             	mov    %rbx,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1) <-- trapping instruction
  2f:	74 08                	je     0x39
  31:	48 89 df             	mov    %rbx,%rdi
  34:	e8 16 87 d2 fe       	call   0xfed2874f
  39:	48 8b 03             	mov    (%rbx),%rax
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	44                   	rex.R
  3f:	24                   	.byte 0x24