------------[ cut here ]------------ kernel BUG at mm/filemap.c:1619! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 17685 Comm: segctord Not tainted 6.4.0-rc7-syzkaller-00226-ga92b7d26c743 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 RIP: 0010:folio_end_writeback+0x43a/0x700 mm/filemap.c:1619 Code: 84 db 00 00 00 e8 86 e6 cf ff e9 48 fc ff ff e8 7c e6 cf ff 4c 89 ff 48 c7 c6 c0 cb f2 8a e8 fd a8 0f 00 0f 0b e8 66 e6 cf ff <0f> 0b e8 5f e6 cf ff 4c 89 ff 48 c7 c6 80 ce f2 8a e8 e0 a8 0f 00 RSP: 0018:ffffc900038df6b8 EFLAGS: 00010293 RAX: ffffffff81bb9e8a RBX: 0000000000000083 RCX: ffff8880794abb80 RDX: 0000000000000000 RSI: ffffffff8aea9f20 RDI: ffffffff8b384860 RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1cabba6 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffea00022b6b34 R13: 1ffffd4000456d66 R14: ffffea00022b6b08 R15: ffffea00022b6b00 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f47637831b8 CR3: 0000000039667000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: nilfs_segctor_complete_write fs/nilfs2/segment.c:1897 [inline] nilfs_segctor_wait fs/nilfs2/segment.c:1958 [inline] nilfs_segctor_do_construct+0x53cd/0x6e30 fs/nilfs2/segment.c:2124 nilfs_segctor_construct+0x145/0x8c0 fs/nilfs2/segment.c:2411 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2519 [inline] nilfs_segctor_thread+0x53a/0x1140 fs/nilfs2/segment.c:2602 kthread+0x2b8/0x350 kernel/kthread.c:379 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:folio_end_writeback+0x43a/0x700 mm/filemap.c:1619 Code: 84 db 00 00 00 e8 86 e6 cf ff e9 48 fc ff ff e8 7c e6 cf ff 4c 89 ff 48 c7 c6 c0 cb f2 8a e8 fd a8 0f 00 0f 0b e8 66 e6 cf ff <0f> 0b e8 5f e6 cf ff 4c 89 ff 48 c7 c6 80 ce f2 8a e8 e0 a8 0f 00 RSP: 0018:ffffc900038df6b8 EFLAGS: 00010293 RAX: ffffffff81bb9e8a RBX: 0000000000000083 RCX: ffff8880794abb80 RDX: 0000000000000000 RSI: ffffffff8aea9f20 RDI: ffffffff8b384860 RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1cabba6 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffea00022b6b34 R13: 1ffffd4000456d66 R14: ffffea00022b6b08 R15: ffffea00022b6b00 FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc94ce7c18 CR3: 000000002c863000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400