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kernel BUG at fs/ext4/inode.c:2802!
Oops: invalid opcode: 0000 [#1] SMP KASAN NOPTI
CPU: 0 UID: 0 PID: 6970 Comm: kworker/u8:16 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
Workqueue: writeback wb_workfn (flush-7:4)
RIP: 0010:ext4_do_writepages+0x2e69/0x3f50 fs/ext4/inode.c:2802
Code: a5 10 ff ff ff 48 c1 ea 03 80 3c 02 00 0f 84 c6 e7 ff ff 48 8b bd 28 ff ff ff e8 c2 de a4 ff e9 b5 e7 ff ff e8 98 87 39 ff 90 <0f> 0b e8 90 87 39 ff 89 9d f8 fe ff ff 44 0f b6 ad a3 fe ff ff e9
RSP: 0018:ffffc900031a7270 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888056a956a8 RCX: ffffffff82ced301
RDX: ffff88802a6e3c80 RSI: ffffffff82cef008 RDI: ffff88802a6e3c80
RBP: ffffc900031a7440 R08: 0000000000000007 R09: 0000000000000000
R10: 0000004000000000 R11: 0000000000000080 R12: 0000000000000001
R13: ffff888056a958f0 R14: 1ffff92000634e6e R15: ffffc900031a7488
FS:  0000000000000000(0000) GS:ffff888124353000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd14c7e42f8 CR3: 000000005b8ff000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 ext4_writepages+0x347/0x790 fs/ext4/inode.c:3019
 do_writepages+0x278/0x600 mm/page-writeback.c:2554
 __writeback_single_inode+0x164/0x13c0 fs/fs-writeback.c:1750
 writeback_sb_inodes+0x72e/0x1bf0 fs/fs-writeback.c:2041
 wb_writeback+0x1c0/0xbe0 fs/fs-writeback.c:2227
 wb_do_writeback fs/fs-writeback.c:2374 [inline]
 wb_workfn+0x142/0xc00 fs/fs-writeback.c:2414
 process_one_work+0x9d7/0x1920 kernel/workqueue.c:3275
 process_scheduled_works kernel/workqueue.c:3358 [inline]
 worker_thread+0x5da/0xe40 kernel/workqueue.c:3439
 kthread+0x370/0x450 kernel/kthread.c:467
 ret_from_fork+0x754/0xd80 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:ext4_do_writepages+0x2e69/0x3f50 fs/ext4/inode.c:2802
Code: a5 10 ff ff ff 48 c1 ea 03 80 3c 02 00 0f 84 c6 e7 ff ff 48 8b bd 28 ff ff ff e8 c2 de a4 ff e9 b5 e7 ff ff e8 98 87 39 ff 90 <0f> 0b e8 90 87 39 ff 89 9d f8 fe ff ff 44 0f b6 ad a3 fe ff ff e9
RSP: 0018:ffffc900031a7270 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffff888056a956a8 RCX: ffffffff82ced301
RDX: ffff88802a6e3c80 RSI: ffffffff82cef008 RDI: ffff88802a6e3c80
RBP: ffffc900031a7440 R08: 0000000000000007 R09: 0000000000000000
R10: 0000004000000000 R11: 0000000000000080 R12: 0000000000000001
R13: ffff888056a958f0 R14: 1ffff92000634e6e R15: ffffc900031a7488
FS:  0000000000000000(0000) GS:ffff888124453000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe08951bd58 CR3: 000000005b858000 CR4: 0000000000350ef0