[syzbot] [ext4?] general protection fault in jbd2_journal_dirty_metadata

[syzbot <syzbot+de24c3fe3c4091051710@syzkaller.appspotmail.com>]

Hello,

syzbot found the following issue on:

HEAD commit:    5bc1018675ec Merge tag 'pci-v6.15-fixes-3' of git://git.ke..
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=12730374580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=90837c100b88a636
dashboard link: https://syzkaller.appspot.com/bug?extid=de24c3fe3c4091051710
compiler:       Debian clang version 20.1.2 (++20250402124445+58df0ef89dd6-1~exp1~20250402004600.97), Debian LLD 20.1.2
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=149e6270580000

Downloadable assets:
disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7feb34a89c2a/non_bootable_disk-5bc10186.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/3a2f39285e07/vmlinux-5bc10186.xz
kernel image: https://storage.googleapis.com/syzbot-assets/2a37a55f34fb/bzImage-5bc10186.xz
mounted in repro #1: https://storage.googleapis.com/syzbot-assets/852ff332bbf1/mount_0.gz
  fsck result: OK (log: https://syzkaller.appspot.com/x/fsck.log?x=14730374580000)
mounted in repro #2: https://storage.googleapis.com/syzbot-assets/e42a022d555a/mount_9.gz
mounted in repro #3: https://storage.googleapis.com/syzbot-assets/7cbdc25f298f/mount_13.gz
  fsck result: OK (log: https://syzkaller.appspot.com/x/fsck.log?x=109e6270580000)

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+de24c3fe3c4091051710@syzkaller.appspotmail.com

(syz.0.497,7529,0):ocfs2_xa_prepare_entry:2151 ERROR: status = -30
(syz.0.497,7529,0):ocfs2_xa_set:2254 ERROR: status = -30
Oops: general protection fault, probably for non-canonical address 0xdffffc0000000000: 0000 [#1] SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000000-0x0000000000000007]
CPU: 0 UID: 0 PID: 7529 Comm: syz.0.497 Not tainted 6.15.0-rc3-syzkaller-00342-g5bc1018675ec #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
RIP: 0010:jbd2_journal_dirty_metadata+0x234/0xcd0 fs/jbd2/transaction.c:1531
Code: 74 08 4c 89 ff e8 ec a5 9c ff 4d 39 37 0f 84 49 01 00 00 e8 de b0 3a ff 31 c0 e9 5e 05 00 00 4c 8b 34 24 4c 89 f0 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 f7 e8 be a5 9c ff 49 8b 06 48 89 44 24 38
RSP: 0018:ffffc9000d47ec18 EFLAGS: 00010246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff88801f980000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff888043abc420 R08: ffff888043aacd9f R09: 1ffff110087559b3
R10: dffffc0000000000 R11: ffffed10087559b4 R12: 1ffff1100382e0df
R13: 1ffff11008757884 R14: 0000000000000000 R15: 1ffff1100382e0dc
FS:  00007f9939c2b6c0(0000) GS:ffff88808d6cc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5fec172720 CR3: 000000004e785000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ocfs2_journal_dirty+0x149/0x740 fs/ocfs2/journal.c:812
 ocfs2_xa_journal_dirty fs/ocfs2/xattr.c:1453 [inline]
 ocfs2_xa_set+0x2516/0x3050 fs/ocfs2/xattr.c:2263
 ocfs2_xattr_block_set+0x3c4/0x2bc0 fs/ocfs2/xattr.c:2985
 __ocfs2_xattr_set_handle+0x661/0xf20 fs/ocfs2/xattr.c:3387
 ocfs2_xattr_set+0xde8/0x11f0 fs/ocfs2/xattr.c:3650
 __vfs_setxattr+0x439/0x480 fs/xattr.c:200
 __vfs_setxattr_noperm+0x12d/0x660 fs/xattr.c:234
 vfs_setxattr+0x16b/0x2f0 fs/xattr.c:321
 do_setxattr fs/xattr.c:636 [inline]
 filename_setxattr+0x274/0x600 fs/xattr.c:665
 path_setxattrat+0x364/0x3a0 fs/xattr.c:713
 __do_sys_setxattr fs/xattr.c:747 [inline]
 __se_sys_setxattr fs/xattr.c:743 [inline]
 __x64_sys_setxattr+0xbc/0xe0 fs/xattr.c:743
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f9938d8e969
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:00007f9939c2b038 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007f9938fb6160 RCX: 00007f9938d8e969
RDX: 0000200000000240 RSI: 0000200000000140 RDI: 0000200000000080
RBP: 00007f9938e10ab1 R08: 0000000000000002 R09: 0000000000000000
R10: 000000000000001e R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f9938fb6160 R15: 00007fff798d5618
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:jbd2_journal_dirty_metadata+0x234/0xcd0 fs/jbd2/transaction.c:1531
Code: 74 08 4c 89 ff e8 ec a5 9c ff 4d 39 37 0f 84 49 01 00 00 e8 de b0 3a ff 31 c0 e9 5e 05 00 00 4c 8b 34 24 4c 89 f0 48 c1 e8 03 <80> 3c 18 00 74 08 4c 89 f7 e8 be a5 9c ff 49 8b 06 48 89 44 24 38
RSP: 0018:ffffc9000d47ec18 EFLAGS: 00010246
RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000000
RDX: ffff88801f980000 RSI: 0000000000000000 RDI: 0000000000000001
RBP: ffff888043abc420 R08: ffff888043aacd9f R09: 1ffff110087559b3
R10: dffffc0000000000 R11: ffffed10087559b4 R12: 1ffff1100382e0df
R13: 1ffff11008757884 R14: 0000000000000000 R15: 1ffff1100382e0dc
FS:  00007f9939c2b6c0(0000) GS:ffff88808d6cc000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000940c71 CR3: 000000004e785000 CR4: 0000000000352ef0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	74 08                	je     0xa
   2:	4c 89 ff             	mov    %r15,%rdi
   5:	e8 ec a5 9c ff       	call   0xff9ca5f6
   a:	4d 39 37             	cmp    %r14,(%r15)
   d:	0f 84 49 01 00 00    	je     0x15c
  13:	e8 de b0 3a ff       	call   0xff3ab0f6
  18:	31 c0                	xor    %eax,%eax
  1a:	e9 5e 05 00 00       	jmp    0x57d
  1f:	4c 8b 34 24          	mov    (%rsp),%r14
  23:	4c 89 f0             	mov    %r14,%rax
  26:	48 c1 e8 03          	shr    $0x3,%rax
* 2a:	80 3c 18 00          	cmpb   $0x0,(%rax,%rbx,1) <-- trapping instruction
  2e:	74 08                	je     0x38
  30:	4c 89 f7             	mov    %r14,%rdi
  33:	e8 be a5 9c ff       	call   0xff9ca5f6
  38:	49 8b 06             	mov    (%r14),%rax
  3b:	48 89 44 24 38       	mov    %rax,0x38(%rsp)


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