last executing test programs:

kernel console output (not intermixed with test programs):

Warning: Permanently added '10.128.1.183' (ED25519) to the list of known hosts.
[   73.054286][ T4944] Oops: general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] SMP KASAN PTI
[   73.067189][ T4944] KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
[   73.075644][ T4944] CPU: 1 UID: 0 PID: 4944 Comm: jbd2/sda1-8 Not tainted syzkaller #0 PREEMPT(full) 
[   73.085125][ T4944] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
[   73.095376][ T4944] RIP: 0010:__bh_submit+0x22d/0x8d0
[   73.101239][ T4944] Code: c1 e8 03 48 89 44 24 18 42 80 3c 20 00 74 08 48 89 df e8 f6 e7 d7 ff 48 89 5c 24 28 48 8b 1b 4c 8d 7b 08 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ff e8 d4 e7 d7 ff 4d 8b 3f 4c 89 fe 48
[   73.123017][ T4944] RSP: 0018:ffffc900101ff868 EFLAGS: 00010202
[   73.130379][ T4944] RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff84b9d9a9
[   73.139866][ T4944] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff888073da5660
[   73.148132][ T4944] RBP: 0000000000009801 R08: ffff888073da56bf R09: 1ffff1100e7b4ad7
[   73.156304][ T4944] R10: dffffc0000000000 R11: ffffed100e7b4ad8 R12: dffffc0000000000
[   73.164384][ T4944] R13: ffff888073da5640 R14: ffff888034d56e00 R15: 0000000000000008
[   73.172371][ T4944] FS:  0000000000000000(0000) GS:ffff88812495b000(0000) knlGS:0000000000000000
[   73.181419][ T4944] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   73.188381][ T4944] CR2: 00007f92eadeb840 CR3: 000000000ed48000 CR4: 00000000003526f0
[   73.196642][ T4944] Call Trace:
[   73.200022][ T4944]  <TASK>
[   73.202984][ T4944]  ? __pfx_journal_end_buffer_io_sync+0x10/0x10
[   73.209421][ T4944]  jbd2_journal_commit_transaction+0x2285/0x5c80
[   73.216012][ T4944]  ? __pfx_jbd2_journal_commit_transaction+0x10/0x10
[   73.222783][ T4944]  ? __pfx_do_raw_spin_lock+0x10/0x10
[   73.228299][ T4944]  ? _raw_spin_unlock_irqrestore+0x30/0x80
[   73.234137][ T4944]  ? _raw_spin_unlock_irqrestore+0x4c/0x80
[   73.240117][ T4944]  ? __timer_delete_sync+0x4a7/0x520
[   73.245437][ T4944]  kjournald2+0x3bc/0x740
[   73.249884][ T4944]  ? __pfx_kjournald2+0x10/0x10
[   73.254764][ T4944]  ? __pfx_autoremove_wake_function+0x10/0x10
[   73.260935][ T4944]  ? __kthread_parkme+0x71/0x1f0
[   73.266012][ T4944]  ? __kthread_parkme+0x199/0x1f0
[   73.271073][ T4944]  kthread+0x38b/0x480
[   73.275150][ T4944]  ? __pfx_kjournald2+0x10/0x10
[   73.280029][ T4944]  ? __pfx_kthread+0x10/0x10
[   73.284820][ T4944]  ret_from_fork+0x514/0xb70
[   73.289423][ T4944]  ? __pfx_ret_from_fork+0x10/0x10
[   73.294570][ T4944]  ? __switch_to+0xc89/0x1420
[   73.299263][ T4944]  ? __pfx_kthread+0x10/0x10
[   73.304490][ T4944]  ret_from_fork_asm+0x1a/0x30
[   73.309395][ T4944]  </TASK>
[   73.312554][ T4944] Modules linked in:
[   73.316795][ T4944] ---[ end trace 0000000000000000 ]---
** replaying previous printk message **
[   73.323201][ T4944] RIP: 0010:__bh_submit+0x22d/0x8d0
[   73.323237][ T4944] Code: c1 e8 03 48 89 44 24 18 42 80 3c 20 00 74 08 48 89 df e8 f6 e7 d7 ff 48 89 5c 24 28 48 8b 1b 4c 8d 7b 08 4c 89 f8 48 c1 e8 03 <42> 80 3c 20 00 74 08 4c 89 ff e8 d4 e7 d7 ff 4d 8b 3f 4c 89 fe 48
[   73.323265][ T4944] RSP: 0018:ffffc900101ff868 EFLAGS: 00010202
[   73.323285][ T4944] RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff84b9d9a9
[   73.323297][ T4944] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff888073da5660
[   73.323307][ T4944] RBP: 0000000000009801 R08: ffff888073da56bf R09: 1ffff1100e7b4ad7
[   73.323321][ T4944] R10: dffffc0000000000 R11: ffffed100e7b4ad8 R12: dffffc0000000000
[   73.323335][ T4944] R13: ffff888073da5640 R14: ffff888034d56e00 R15: 0000000000000008
[   73.323349][ T4944] FS:  0000000000000000(0000) GS:ffff88812485b000(0000) knlGS:0000000000000000
[   73.323365][ T4944] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   73.323378][ T4944] CR2: 00007f92eae08738 CR3: 000000000ed48000 CR4: 00000000003526f0
[   73.323399][ T4944] Kernel panic - not syncing: Fatal exception
[   73.428517][ T4944] Kernel Offset: disabled
[   73.432888][ T4944] Rebooting in 86400 seconds..