loop0: detected capacity change from 0 to 128
EXT4-fs (loop0): mounted filesystem without journal. Quota mode: none.
general protection fault, probably for non-canonical address 0xdffffc0000000007: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000038-0x000000000000003f]
CPU: 1 PID: 4048 Comm: syz.0.73 Not tainted 6.1.109-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__ext4_journal_get_write_access+0xc6/0x6b0 fs/ext4/ext4_jbd2.c:231
Code: 31 c0 49 8d 5e 30 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 98 9e af ff 48 8b 1b 48 83 c3 38 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 7b 9e af ff 4c 8b 23 4d 85 e4 4c
RSP: 0018:ffffc9000539f800 EFLAGS: 00010202
RAX: 0000000000000007 RBX: 0000000000000038 RCX: ffff8880293dd940
RDX: dffffc0000000000 RSI: ffff8880293dd940 RDI: ffffc9000539f780
RBP: ffffc9000539f8d0 R08: ffff888070511bc8 R09: 0000000000000001
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888058d30678
R13: dffffc0000000000 R14: ffff888070511bc8 R15: 0000000000000001
FS:  00007f82d8d3d6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f14f146abd0 CR3: 0000000027581000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ext4_update_primary_sb fs/ext4/ioctl.c:67 [inline]
 ext4_update_superblocks_fn+0x2f5/0x1020 fs/ext4/ioctl.c:221
 ext4_fill_super+0x3142/0x8b50 fs/ext4/super.c:5683
 get_tree_bdev+0x3fe/0x620 fs/super.c:1366
 vfs_get_tree+0x88/0x270 fs/super.c:1573
 do_new_mount+0x2ba/0xb40 fs/namespace.c:3051
 do_mount fs/namespace.c:3394 [inline]
 __do_sys_mount fs/namespace.c:3602 [inline]
 __se_sys_mount+0x2d5/0x3c0 fs/namespace.c:3579
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f82d7f7f69a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f82d8d3ce68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f82d8d3cef0 RCX: 00007f82d7f7f69a
RDX: 0000000020000240 RSI: 0000000020000280 RDI: 00007f82d8d3ceb0
RBP: 0000000020000240 R08: 00007f82d8d3cef0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000020000280
R13: 00007f82d8d3ceb0 R14: 0000000000000236 R15: 00000000200002c0
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:__ext4_journal_get_write_access+0xc6/0x6b0 fs/ext4/ext4_jbd2.c:231
Code: 31 c0 49 8d 5e 30 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 98 9e af ff 48 8b 1b 48 83 c3 38 48 89 d8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 df e8 7b 9e af ff 4c 8b 23 4d 85 e4 4c
RSP: 0018:ffffc9000539f800 EFLAGS: 00010202
RAX: 0000000000000007 RBX: 0000000000000038 RCX: ffff8880293dd940
RDX: dffffc0000000000 RSI: ffff8880293dd940 RDI: ffffc9000539f780
RBP: ffffc9000539f8d0 R08: ffff888070511bc8 R09: 0000000000000001
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff888058d30678
R13: dffffc0000000000 R14: ffff888070511bc8 R15: 0000000000000001
FS:  00007f82d8d3d6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055a8bccf9600 CR3: 0000000027581000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	31 c0                	xor    %eax,%eax
   2:	49 8d 5e 30          	lea    0x30(%r14),%rbx
   6:	48 89 d8             	mov    %rbx,%rax
   9:	48 c1 e8 03          	shr    $0x3,%rax
   d:	42 80 3c 28 00       	cmpb   $0x0,(%rax,%r13,1)
  12:	74 08                	je     0x1c
  14:	48 89 df             	mov    %rbx,%rdi
  17:	e8 98 9e af ff       	call   0xffaf9eb4
  1c:	48 8b 1b             	mov    (%rbx),%rbx
  1f:	48 83 c3 38          	add    $0x38,%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 7b 9e af ff       	call   0xffaf9eb4
  39:	4c 8b 23             	mov    (%rbx),%r12
  3c:	4d 85 e4             	test   %r12,%r12
  3f:	4c                   	rex.WR