syzbot


WARNING in nilfs_btree_assign (2)

Status: upstream: reported on 2023/12/03 05:17
Subsystems: nilfs
[Documentation on labels]
Reported-by: syzbot+9f22ab249b48e3877e87@syzkaller.appspotmail.com
First crash: 87d, last: 87d
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [nilfs?] WARNING in nilfs_btree_assign (2) 0 (1) 2023/12/03 05:17
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in nilfs_btree_assign origin:upstream missing-backport C unreliable 18 168d 339d 0/3 upstream: reported C repro on 2023/03/22 07:45
linux-4.14 WARNING in nilfs_btree_assign nilfs2 C 7 371d 483d 0/1 upstream: reported C repro on 2022/10/28 16:42
upstream WARNING in nilfs_btree_assign nilfs C error 799 213d 516d 23/26 fixed on 2023/09/28 17:51
linux-5.15 WARNING in nilfs_btree_assign C done 26 249d 324d 3/3 fixed on 2023/08/10 11:37

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 21731 at fs/nilfs2/btree.c:2283 nilfs_btree_assign+0xab7/0xd20 fs/nilfs2/btree.c:2283
Modules linked in:
CPU: 0 PID: 21731 Comm: segctord Not tainted 6.7.0-rc3-syzkaller-00024-g18d46e76d7c2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:nilfs_btree_assign+0xab7/0xd20 fs/nilfs2/btree.c:2283
Code: 0f 85 80 02 00 00 44 89 f0 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 f6 c6 35 fe 4c 8b 7c 24 38 eb a6 e8 ea c6 35 fe 90 <0f> 0b 90 41 be fe ff ff ff eb 95 44 89 f1 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc90009877560 EFLAGS: 00010293
RAX: ffffffff8358b356 RBX: ffff888036b43358 RCX: ffff8880752c9dc0
RDX: 0000000000000000 RSI: 00000000fffffffe RDI: 00000000fffffffe
RBP: ffffc90009877690 R08: ffffffff8358ac9b R09: 1ffff11007864d22
R10: dffffc0000000000 R11: ffffed1007864d23 R12: dffffc0000000000
R13: ffff888038e7e900 R14: 00000000fffffffe R15: 1ffff9200130eebc
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555555aba788 CR3: 0000000030425000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 nilfs_bmap_assign+0x8b/0x160 fs/nilfs2/bmap.c:390
 nilfs_segctor_update_payload_blocknr fs/nilfs2/segment.c:1626 [inline]
 nilfs_segctor_assign fs/nilfs2/segment.c:1660 [inline]
 nilfs_segctor_do_construct+0x37ae/0x6e40 fs/nilfs2/segment.c:2092
 nilfs_segctor_construct+0x145/0x8c0 fs/nilfs2/segment.c:2415
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2523 [inline]
 nilfs_segctor_thread+0x53a/0x1140 fs/nilfs2/segment.c:2606
 kthread+0x2d3/0x370 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/11/29 05:09 upstream 18d46e76d7c2 1adfb6f6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in nilfs_btree_assign
* Struck through repros no longer work on HEAD.