NILFS error (device loop2): nilfs_bmap_lookup_contig: broken bmap (inode number=20) ------------[ cut here ]------------ kernel BUG at fs/buffer.c:2785! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 UID: 0 PID: 6001 Comm: syz.2.59 Not tainted 6.12.0-rc3-syzkaller-00007-g6485cf5ea253 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:submit_bh_wbc+0x556/0x560 fs/buffer.c:2785 Code: 89 fa e8 dd d7 cb 02 e9 95 fe ff ff e8 63 9b 74 ff 90 0f 0b e8 5b 9b 74 ff 90 0f 0b e8 53 9b 74 ff 90 0f 0b e8 4b 9b 74 ff 90 <0f> 0b e8 43 9b 74 ff 90 0f 0b 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000381f1d8 EFLAGS: 00010283 RAX: ffffffff82204bb5 RBX: 0000000000000154 RCX: 0000000000040000 RDX: ffffc9000cb19000 RSI: 00000000000004cf RDI: 00000000000004d0 RBP: 0000000000000100 R08: ffffffff82204779 R09: 1ffff1100b0c2579 R10: dffffc0000000000 R11: ffffed100b0c257a R12: 0000000000000000 R13: ffff888058612bc8 R14: 0000000000000000 R15: 1ffff1100b0c2579 FS: 00007f3c9e63c6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5c71a22000 CR3: 00000000739e8000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: submit_bh fs/buffer.c:2824 [inline] block_read_full_folio+0x93b/0xcd0 fs/buffer.c:2451 do_mpage_readpage+0x1a73/0x1c80 fs/mpage.c:317 mpage_read_folio+0x108/0x1e0 fs/mpage.c:392 filemap_read_folio+0x14b/0x630 mm/filemap.c:2367 do_read_cache_folio+0x3f5/0x850 mm/filemap.c:3825 read_mapping_folio include/linux/pagemap.h:1011 [inline] nilfs_get_folio+0x4b/0x240 fs/nilfs2/dir.c:190 nilfs_find_entry+0x138/0x650 fs/nilfs2/dir.c:313 nilfs_inode_by_name+0xa8/0x210 fs/nilfs2/dir.c:393 nilfs_lookup+0x76/0x110 fs/nilfs2/namei.c:62 __lookup_slow+0x28c/0x3f0 fs/namei.c:1732 lookup_slow+0x53/0x70 fs/namei.c:1749 walk_component+0x2e1/0x410 fs/namei.c:2053 lookup_last fs/namei.c:2556 [inline] path_lookupat+0x16f/0x450 fs/namei.c:2580 filename_lookup+0x256/0x610 fs/namei.c:2609 do_linkat+0x13f/0x6f0 fs/namei.c:4789 __do_sys_link fs/namei.c:4843 [inline] __se_sys_link fs/namei.c:4841 [inline] __x64_sys_link+0x82/0x90 fs/namei.c:4841 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3c9d77dff9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f3c9e63c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000056 RAX: ffffffffffffffda RBX: 00007f3c9d935f80 RCX: 00007f3c9d77dff9 RDX: 0000000000000000 RSI: 0000000020000300 RDI: 0000000020000200 RBP: 00007f3c9d7f0296 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f3c9d935f80 R15: 00007ffc4c269218 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:submit_bh_wbc+0x556/0x560 fs/buffer.c:2785 Code: 89 fa e8 dd d7 cb 02 e9 95 fe ff ff e8 63 9b 74 ff 90 0f 0b e8 5b 9b 74 ff 90 0f 0b e8 53 9b 74 ff 90 0f 0b e8 4b 9b 74 ff 90 <0f> 0b e8 43 9b 74 ff 90 0f 0b 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 0018:ffffc9000381f1d8 EFLAGS: 00010283 RAX: ffffffff82204bb5 RBX: 0000000000000154 RCX: 0000000000040000 RDX: ffffc9000cb19000 RSI: 00000000000004cf RDI: 00000000000004d0 RBP: 0000000000000100 R08: ffffffff82204779 R09: 1ffff1100b0c2579 R10: dffffc0000000000 R11: ffffed100b0c257a R12: 0000000000000000 R13: ffff888058612bc8 R14: 0000000000000000 R15: 1ffff1100b0c2579 FS: 00007f3c9e63c6c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5c71a22000 CR3: 00000000739e8000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400