EXT4-fs (loop5): Free/Dirty block details EXT4-fs (loop5): free_blocks=2415919104 EXT4-fs (loop5): dirty_blocks=336 EXT4-fs (loop5): Block reservation details EXT4-fs (loop5): i_reserved_data_blocks=20 ------------[ cut here ]------------ kernel BUG at fs/ext4/inode.c:2844! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 172 Comm: kworker/u4:2 Not tainted 5.4.219-syzkaller-00097-ga76dfbc99260 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: writeback wb_workfn (flush-7:5) RIP: 0010:ext4_writepages+0x3a2b/0x3a50 fs/ext4/inode.c:2843 Code: 94 c3 40 0f 94 c6 31 ff e8 12 9d a0 ff 84 db 75 2e e8 79 9a a0 ff 48 bb 00 00 00 00 00 fc ff df e9 a9 f6 ff ff e8 65 9a a0 ff <0f> 0b e8 5e 9a a0 ff 0f 0b e8 57 9a a0 ff e8 d2 96 3b ff eb a3 e8 RSP: 0018:ffff8881e4fa7140 EFLAGS: 00010293 RAX: ffffffff81c4b0bb RBX: 0000010000000000 RCX: ffff8881eb390000 RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000 RBP: ffff8881e4fa7510 R08: ffffffff81c47f87 R09: ffffed1034618e69 R10: ffffed1034618e69 R11: 1ffff11034618e68 R12: ffff8881a30c73f0 R13: ffff8881e4fa7870 R14: 0000010410000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2cf2a000 CR3: 00000001b21b2000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: do_writepages+0x13a/0x280 mm/page-writeback.c:2344 __writeback_single_inode+0xc5/0x840 fs/fs-writeback.c:1467 writeback_sb_inodes+0xa04/0x1890 fs/fs-writeback.c:1730 wb_writeback+0x429/0xcb0 fs/fs-writeback.c:1905 wb_do_writeback+0x1f2/0xbd0 fs/fs-writeback.c:2050 wb_workfn+0xf8/0x450 fs/fs-writeback.c:2091 process_one_work+0x6ca/0xc40 kernel/workqueue.c:2287 worker_thread+0xae0/0x1440 kernel/workqueue.c:2433 kthread+0x2d8/0x360 kernel/kthread.c:288 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:354 Modules linked in: ---[ end trace 2d36df0f44ca57b3 ]--- RIP: 0010:ext4_writepages+0x3a2b/0x3a50 fs/ext4/inode.c:2843 Code: 94 c3 40 0f 94 c6 31 ff e8 12 9d a0 ff 84 db 75 2e e8 79 9a a0 ff 48 bb 00 00 00 00 00 fc ff df e9 a9 f6 ff ff e8 65 9a a0 ff <0f> 0b e8 5e 9a a0 ff 0f 0b e8 57 9a a0 ff e8 d2 96 3b ff eb a3 e8 RSP: 0018:ffff8881e4fa7140 EFLAGS: 00010293 RAX: ffffffff81c4b0bb RBX: 0000010000000000 RCX: ffff8881eb390000 RDX: 0000000000000000 RSI: 0000010000000000 RDI: 0000000000000000 RBP: ffff8881e4fa7510 R08: ffffffff81c47f87 R09: ffffed1034618e69 R10: ffffed1034618e69 R11: 1ffff11034618e68 R12: ffff8881a30c73f0 R13: ffff8881e4fa7870 R14: 0000010410000000 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f6f47cb6000 CR3: 00000001eb8c8000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400