NILFS (loop5): segctord starting. Construction interval = 5 seconds, CP frequency < 30 seconds ------------[ cut here ]------------ kernel BUG at mm/filemap.c:1614! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 3972 Comm: segctord Not tainted 6.1.27-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/14/2023 RIP: 0010:folio_end_writeback+0x432/0x6f0 mm/filemap.c:1614 Code: 84 d3 00 00 00 e8 6e 7b d3 ff e9 4c fc ff ff e8 64 7b d3 ff 4c 89 ff 48 c7 c6 e0 c8 f4 8a e8 f5 55 12 00 0f 0b e8 4e 7b d3 ff <0f> 0b e8 47 7b d3 ff 4c 89 ff 48 c7 c6 a0 c8 f4 8a e8 d8 55 12 00 RSP: 0018:ffffc9000479f6b8 EFLAGS: 00010293 RAX: ffffffff81b64d72 RBX: 0000000000000081 RCX: ffff88807d0bd7c0 RDX: 0000000000000000 RSI: ffffffff8aebe1a0 RDI: ffffffff8b3cbfa0 RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1ca5da6 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffea0001e47ff4 R13: 1ffffd40003c8ffe R14: ffffea0001e47fc8 R15: ffffea0001e47fc0 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f09284f8718 CR3: 0000000020cc5000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: nilfs_segctor_complete_write fs/nilfs2/segment.c:1888 [inline] nilfs_segctor_wait fs/nilfs2/segment.c:1949 [inline] nilfs_segctor_do_construct+0x5245/0x6c70 fs/nilfs2/segment.c:2112 nilfs_segctor_construct+0x145/0x8c0 fs/nilfs2/segment.c:2399 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2507 [inline] nilfs_segctor_thread+0x536/0x1130 fs/nilfs2/segment.c:2590 kthread+0x26e/0x300 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:folio_end_writeback+0x432/0x6f0 mm/filemap.c:1614 Code: 84 d3 00 00 00 e8 6e 7b d3 ff e9 4c fc ff ff e8 64 7b d3 ff 4c 89 ff 48 c7 c6 e0 c8 f4 8a e8 f5 55 12 00 0f 0b e8 4e 7b d3 ff <0f> 0b e8 47 7b d3 ff 4c 89 ff 48 c7 c6 a0 c8 f4 8a e8 d8 55 12 00 RSP: 0018:ffffc9000479f6b8 EFLAGS: 00010293 RAX: ffffffff81b64d72 RBX: 0000000000000081 RCX: ffff88807d0bd7c0 RDX: 0000000000000000 RSI: ffffffff8aebe1a0 RDI: ffffffff8b3cbfa0 RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1ca5da6 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffea0001e47ff4 R13: 1ffffd40003c8ffe R14: ffffea0001e47fc8 R15: ffffea0001e47fc0 FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f093081a000 CR3: 0000000026eec000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400