------------[ cut here ]------------
kernel BUG at fs/nilfs2/btnode.c:59!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 7340 Comm: segctord Not tainted 6.3.0-syzkaller-10620-g33afd4b76393 #0
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014
RIP: 0010:nilfs_btnode_create_block+0x405/0x670 fs/nilfs2/btnode.c:59
Code: 0f 85 83 01 00 00 e8 0a 49 57 fe 48 89 e8 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 f3 48 57 fe 48 89 ef e8 fb 3a c9 fe <0f> 0b e8 e4 48 57 fe be 08 00 00 00 48 89 ef e8 37 f4 a9 fe f0 80
RSP: 0018:ffffc90023c4f850 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff888015d0c800 RSI: ffffffff832c8d45 RDI: ffff888070477148
RBP: ffff8880704770e8 R08: 0000000000000001 R09: ffff88807047714b
R10: ffffed100e08ee29 R11: 0000000000000000 R12: 0000000000001223
R13: ffff8880739287c0 R14: 0000000000001007 R15: ffff88806f8569b8
FS:  0000000000000000(0000) GS:ffff88802c700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000056c95efc CR3: 000000006bcff000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 nilfs_btnode_prepare_change_key+0x145/0x570 fs/nilfs2/btnode.c:219
 nilfs_btree_prepare_update_v+0x3a7/0x510 fs/nilfs2/btree.c:1928
 nilfs_btree_prepare_propagate_v fs/nilfs2/btree.c:1995 [inline]
 nilfs_btree_propagate_v fs/nilfs2/btree.c:2040 [inline]
 nilfs_btree_propagate+0x84e/0xd60 fs/nilfs2/btree.c:2097
 nilfs_bmap_propagate+0x77/0x170 fs/nilfs2/bmap.c:337
 nilfs_collect_file_data+0x49/0xd0 fs/nilfs2/segment.c:587
 nilfs_segctor_apply_buffers+0x14a/0x470 fs/nilfs2/segment.c:1039
 nilfs_segctor_scan_file+0x3f4/0x6f0 fs/nilfs2/segment.c:1088
 nilfs_segctor_collect_blocks fs/nilfs2/segment.c:1197 [inline]
 nilfs_segctor_collect fs/nilfs2/segment.c:1524 [inline]
 nilfs_segctor_do_construct+0x2747/0x71a0 fs/nilfs2/segment.c:2067
 nilfs_segctor_construct+0x8e3/0xb30 fs/nilfs2/segment.c:2401
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2509 [inline]
 nilfs_segctor_thread+0x3c7/0xf30 fs/nilfs2/segment.c:2592
 kthread+0x344/0x440 kernel/kthread.c:379
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:nilfs_btnode_create_block+0x405/0x670 fs/nilfs2/btnode.c:59
Code: 0f 85 83 01 00 00 e8 0a 49 57 fe 48 89 e8 48 83 c4 08 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 f3 48 57 fe 48 89 ef e8 fb 3a c9 fe <0f> 0b e8 e4 48 57 fe be 08 00 00 00 48 89 ef e8 37 f4 a9 fe f0 80
RSP: 0018:ffffc90023c4f850 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000
RDX: ffff888015d0c800 RSI: ffffffff832c8d45 RDI: ffff888070477148
RBP: ffff8880704770e8 R08: 0000000000000001 R09: ffff88807047714b
R10: ffffed100e08ee29 R11: 0000000000000000 R12: 0000000000001223
R13: ffff8880739287c0 R14: 0000000000001007 R15: ffff88806f8569b8
FS:  0000000000000000(0000) GS:ffff88802c700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000056c95efc CR3: 000000001d117000 CR4: 0000000000350ee0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400