syzbot


kernel BUG in nilfs_btnode_create_block (2)

Status: upstream: reported on 2024/06/15 16:32
Subsystems: nilfs
[Documentation on labels]
Reported-by: syzbot+89cc4f2324ed37988b60@syzkaller.appspotmail.com
First crash: 37d, last: 37d
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [nilfs?] kernel BUG in nilfs_btnode_create_block (2) 1 (2) 2024/06/15 23:36
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream kernel BUG in nilfs_btnode_create_block nilfs C 8 426d 633d 23/27 fixed on 2023/07/04 09:17
linux-6.1 kernel BUG in nilfs_btnode_create_block origin:upstream C error 1 395d 426d 0/3 auto-obsoleted due to no activity on 2023/09/27 08:52

Sample crash report:
------------[ cut here ]------------
kernel BUG at fs/nilfs2/btnode.c:59!
Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI
CPU: 1 PID: 7600 Comm: segctord Not tainted 6.10.0-rc3-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:nilfs_btnode_create_block+0x3dc/0x400 fs/nilfs2/btnode.c:59
Code: 8e 48 89 da e8 85 25 73 01 e9 a7 fd ff ff e8 cb d2 28 fe eb 0c e8 c4 d2 28 fe eb 05 e8 bd d2 28 fe 4c 89 ef e8 35 00 00 00 90 <0f> 0b e8 ad d2 28 fe 4c 89 f7 48 c7 c6 40 f2 06 8c e8 8e c0 6f fe
RSP: 0000:ffffc90004f1f270 EFLAGS: 00010202
RAX: ffffffff821b2801 RBX: 0000000000000010 RCX: ffffffff821b2819
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff88807746f5d0
RBP: 0000000000001cc3 R08: ffff88807746f5d3 R09: 1ffff1100ee8deba
R10: dffffc0000000000 R11: ffffed100ee8debb R12: dffffc0000000000
R13: ffff88807746f570 R14: 1ffff1100ee8deae R15: ffff88805e399490
FS:  0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdd25186000 CR3: 000000007a728000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 nilfs_btnode_prepare_change_key+0x26d/0x300 fs/nilfs2/btnode.c:219
 nilfs_btree_prepare_update_v+0x397/0x450 fs/nilfs2/btree.c:1942
 nilfs_btree_prepare_propagate_v fs/nilfs2/btree.c:2001 [inline]
 nilfs_btree_propagate_v fs/nilfs2/btree.c:2054 [inline]
 nilfs_btree_propagate+0x3bf/0xdf0 fs/nilfs2/btree.c:2111
 nilfs_bmap_propagate+0x75/0x120 fs/nilfs2/bmap.c:345
 nilfs_segctor_apply_buffers+0x184/0x340 fs/nilfs2/segment.c:1006
 nilfs_segctor_scan_file+0x810/0xa50 fs/nilfs2/segment.c:1066
 nilfs_segctor_collect_blocks fs/nilfs2/segment.c:1164 [inline]
 nilfs_segctor_collect fs/nilfs2/segment.c:1492 [inline]
 nilfs_segctor_do_construct+0x1c43/0x6b50 fs/nilfs2/segment.c:2040
 nilfs_segctor_construct+0x181/0x6b0 fs/nilfs2/segment.c:2408
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2516 [inline]
 nilfs_segctor_thread+0x55c/0x11b0 fs/nilfs2/segment.c:2601
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:nilfs_btnode_create_block+0x3dc/0x400 fs/nilfs2/btnode.c:59
Code: 8e 48 89 da e8 85 25 73 01 e9

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/06/11 16:28 upstream 83a7eefedc9b b7d9eb04 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs kernel BUG in nilfs_btnode_create_block
* Struck through repros no longer work on HEAD.