EXT4-fs (loop1): Delayed block allocation failed for inode 18 at logical offset 2052 with max blocks 2048 with error 28
EXT4-fs (loop4): i_reserved_data_blocks=674
EXT4-fs (loop3): This should not happen!! Data will be lost
EXT4-fs (loop4): Delayed block allocation failed for inode 18 at logical offset 2052 with max blocks 2048 with error 28
EXT4-fs (loop5): This should not happen!! Data will be lost
WARNING: CPU: 0 PID: 3194 at fs/ext4/ext4_jbd2.c:53 ext4_journal_check_start+0x43/0x70 fs/ext4/ext4_jbd2.c:65
EXT4-fs (loop3): Total free blocks count 0
Kernel panic - not syncing: panic_on_warn set ...

CPU: 0 PID: 3194 Comm: kworker/u4:7 Not tainted 4.19.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: writeback wb_workfn (flush-7:1)
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x89/0xba lib/dump_stack.c:113
 panic+0xef/0x24e kernel/panic.c:184
EXT4-fs (loop5): Total free blocks count 0
 __warn.cold.7+0x31/0x37 kernel/panic.c:536
 report_bug+0xb6/0xe0 lib/bug.c:186
 fixup_bug arch/x86/kernel/traps.c:178 [inline]
 fixup_bug arch/x86/kernel/traps.c:173 [inline]
 do_error_trap+0xfe/0x180 arch/x86/kernel/traps.c:296
 do_invalid_op+0x1b/0x20 arch/x86/kernel/traps.c:316
 invalid_op+0x14/0x20 arch/x86/entry/entry_64.S:993
RIP: 0010:ext4_journal_check_start+0x43/0x70 fs/ext4/ext4_jbd2.c:53
EXT4-fs (loop3): Free/Dirty block details
Code: 47 50 01 75 49 83 bf e0 02 00 00 04 55 48 89 e5 74 18 48 8b 92 e0 02 00 00 31 c0 48 85 d2 74 08 48 8b 02 83 e0 02 75 06 5d c3 <0f> 0b eb e4 48 c7 c1 19 e9 02 83 ba 3d 00 00 00 48 c7 c6 e0 4e a3
RSP: 0018:ffffc90000e6f9d0 EFLAGS: 00010246
RAX: 00000000fffffffb RBX: ffff88012984d000 RCX: 0000000000000000
RDX: ffff88012984a000 RSI: 0000000000000b15 RDI: ffff88012984d000
RBP: ffffc90000e6f9d0 R08: 0000000000000000 R09: ffff88012fd91380
R10: ffffffff83482da0 R11: ffff88012c6eb7c8 R12: 0000000000000006
R13: 0000000000000000 R14: ffffffff813bad9e R15: ffff88012090d628
 __ext4_journal_start_sb+0x4d/0x180 fs/ext4/ext4_jbd2.c:74
 __ext4_journal_start fs/ext4/ext4_jbd2.h:311 [inline]
 ext4_writepages+0x71e/0x1120 fs/ext4/inode.c:2836
 do_writepages+0x3c/0xd0 mm/page-writeback.c:2340
EXT4-fs (loop5): Free/Dirty block details
 __writeback_single_inode+0x72/0x590 fs/fs-writeback.c:1323
 writeback_sb_inodes+0x226/0x5b0 fs/fs-writeback.c:1587
 wb_writeback+0x12f/0x420 fs/fs-writeback.c:1763
EXT4-fs (loop5): free_blocks=68451041280
 wb_do_writeback fs/fs-writeback.c:1908 [inline]
 wb_workfn+0x12d/0x580 fs/fs-writeback.c:1949
 process_one_work+0x25c/0x550 kernel/workqueue.c:2153
 worker_thread+0x32/0x3a0 kernel/workqueue.c:2296
 kthread+0x11c/0x140 kernel/kthread.c:246
 ret_from_fork+0x22/0x40 arch/x86/entry/entry_64.S:413
Kernel Offset: disabled
Rebooting in 86400 seconds..