syzbot


WARNING in hfs_bnode_create

Status: upstream: reported C repro on 2023/04/04 01:35
Bug presence: origin:upstream
Labels: missing-backport
[Documentation on labels]
Reported-by: syzbot+ce523929d0f93927ba4f@syzkaller.appspotmail.com
First crash: 777d, last: 3d16h
Fix bisection: failed (error log, bisect log)
  
Bug presence (3)
Date Name Commit Repro Result
2025/04/29 linux-5.15.y (ToT) f7347f400572 C [report] WARNING in hfs_bnode_create
2023/05/09 upstream (ToT) ba0ad6ed89fd C [report] WARNING in hfs_bnode_create
2025/04/29 upstream (ToT) ca91b9500108 C Didn't crash
Similar bugs (4)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in hfs_bnode_create hfs C done error 2081 2d15h 2603d 0/28 upstream: reported C repro on 2018/04/04 03:02
linux-4.19 WARNING in hfs_bnode_create hfs C 16 810d 905d 0/1 upstream: reported C repro on 2022/11/26 06:17
linux-6.1 WARNING in hfs_bnode_create origin:upstream C error 76 22d 778d 0/3 upstream: reported C repro on 2023/04/02 22:27
linux-4.14 WARNING in hfs_bnode_create C 2 809d 891d 0/1 upstream: reported C repro on 2022/12/10 13:46
Last patch testing requests (7)
Created Duration User Patch Repo Result
2025/04/07 16:44 13m retest repro linux-5.15.y report log
2025/04/07 16:44 10m retest repro linux-5.15.y report log
2025/03/03 00:30 13m retest repro linux-5.15.y report log
2025/03/03 00:30 9m retest repro linux-5.15.y report log
2025/03/03 00:30 9m retest repro linux-5.15.y report log
2025/03/03 00:30 9m retest repro linux-5.15.y report log
2025/03/03 00:30 9m retest repro linux-5.15.y report log
Fix bisection attempts (2)
Created Duration User Patch Repo Result
2023/12/03 15:19 0m bisect fix linux-5.15.y error job log
2023/10/11 09:00 1h02m bisect fix linux-5.15.y OK (0) job log log

Sample crash report:
RAX: ffffffffffffffda RBX: 00007ffc9da3de90 RCX: 00007f8909c1dbd9
RDX: 000000000208e24b RSI: 0000200000000240 RDI: 0000000000000004
RBP: 0000000000000001 R08: 00007ffc9da3dc07 R09: 00007ffc9da3deb0
R10: 0000000000000001 R11: 0000000000000246 R12: 00007ffc9da3de8c
R13: 0000000000000018 R14: 431bde82d7b634db R15: 00007ffc9da3ded0
 </TASK>
hfs: new node 0 already hashed?
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4190 at fs/hfs/bnode.c:438 hfs_bnode_create+0x3d1/0x450 fs/hfs/bnode.c:437
Modules linked in:
CPU: 1 PID: 4190 Comm: syz-executor131 Not tainted 5.15.181-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:hfs_bnode_create+0x3d1/0x450 fs/hfs/bnode.c:438
Code: 72 1f 8a 89 ee e8 af ea 69 07 e9 57 fd ff ff e8 b5 f9 4a ff 4c 89 ef e8 0d c7 7d 07 48 c7 c7 60 72 1f 8a 89 ee e8 8f ea 69 07 <0f> 0b eb b7 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 63 fc ff ff 4c
RSP: 0018:ffffc90002dbefd0 EFLAGS: 00010246
RAX: 000000000000001f RBX: ffff88807aa18000 RCX: 19b27816fd3fdc00
RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: fffff520005b7d5d
R10: fffff520005b7d5d R11: 1ffff920005b7d5c R12: 0000000000000000
R13: ffff88807aa180e0 R14: ffff888019fdd200 R15: dffffc0000000000
FS:  0000555576b88380(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 0000000074c12000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfs_bmap_alloc+0x5b2/0x660 fs/hfs/btree.c:288
 hfs_btree_inc_height+0xf3/0xac0 fs/hfs/brec.c:471
 hfs_brec_insert+0x73e/0xbc0 fs/hfs/brec.c:148
 __hfs_ext_write_extent+0x2a1/0x470 fs/hfs/extent.c:124
 __hfs_ext_cache_extent+0x6b/0x9b0 fs/hfs/extent.c:174
 hfs_ext_read_extent fs/hfs/extent.c:202 [inline]
 hfs_extend_file+0x313/0x1280 fs/hfs/extent.c:401
 hfs_get_block+0x3d4/0xbd0 fs/hfs/extent.c:353
 __block_write_begin_int+0x54e/0x15a0 fs/buffer.c:2012
 __block_write_begin fs/buffer.c:2062 [inline]
 block_write_begin fs/buffer.c:2122 [inline]
 cont_write_begin+0x58a/0x7b0 fs/buffer.c:2471
 hfs_write_begin+0x92/0xe0 fs/hfs/inode.c:59
 generic_perform_write+0x2aa/0x530 mm/filemap.c:3785
 __generic_file_write_iter+0x25f/0x4e0 mm/filemap.c:3912
 generic_file_write_iter+0xa6/0x1b0 mm/filemap.c:3944
 call_write_iter include/linux/fs.h:2172 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0x712/0xd00 fs/read_write.c:594
 ksys_write+0x14d/0x250 fs/read_write.c:647
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f8909c1dbd9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 1b 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffc9da3de68 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007ffc9da3de90 RCX: 00007f8909c1dbd9
RDX: 000000000208e24b RSI: 0000200000000240 RDI: 0000000000000004
RBP: 0000000000000001 R08: 00007ffc9da3dc07 R09: 00007ffc9da3deb0
R10: 0000000000000001 R11: 0000000000000246 R12: 00007ffc9da3de8c
R13: 0000000000000018 R14: 431bde82d7b634db R15: 00007ffc9da3ded0
 </TASK>

Crashes (615):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/05/08 21:08 linux-5.15.y 16fdf2c7111b dbf35fa1 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/11/17 07:15 linux-5.15.y d98fd109f827 cfe3a04a .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/08/07 03:12 linux-5.15.y 7e89efd3ae1c 1ef9fe42 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/08/02 21:09 linux-5.15.y 7e89efd3ae1c 1e9c4cf3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/07/20 03:40 linux-5.15.y 7c6d66f0266f 890ce4f3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/07/20 01:58 linux-5.15.y 7c6d66f0266f 890ce4f3 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/05/19 19:48 linux-5.15.y 83655231580b c0f1611a .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2023/11/03 11:38 linux-5.15.y 12952a23a5da c4ac074c .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2023/06/09 08:06 linux-5.15.y d7af3e5ba454 058b3a5a .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2023/05/23 18:24 linux-5.15.y 9d6bde853685 4bce1a3e .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2023/04/29 19:26 linux-5.15.y f48aeeaaa64c 62df2017 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2025/05/11 10:51 linux-5.15.y 3b8db0e4f263 77908e5f .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 WARNING in hfs_bnode_create
2025/01/26 21:35 linux-5.15.y 003148680b79 9fbd772e .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 WARNING in hfs_bnode_create
2024/03/23 07:43 linux-5.15.y b95c01af2113 0ea90952 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 WARNING in hfs_bnode_create
2023/05/19 00:33 linux-5.15.y 9d6bde853685 3bb7af1d .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 WARNING in hfs_bnode_create
2025/05/08 20:29 linux-5.15.y 16fdf2c7111b dbf35fa1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/12/28 19:34 linux-5.15.y 91786f140358 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/11/17 06:23 linux-5.15.y d98fd109f827 cfe3a04a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/28 12:10 linux-5.15.y 3a5928702e71 ba29ff75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/27 20:24 linux-5.15.y 3a5928702e71 440b26ec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/26 18:47 linux-5.15.y 3a5928702e71 9314348a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/25 23:20 linux-5.15.y 3a5928702e71 0d19f247 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/25 10:35 linux-5.15.y 3a5928702e71 349a68c4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/25 10:34 linux-5.15.y 3a5928702e71 349a68c4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/24 16:54 linux-5.15.y 3a5928702e71 5643e0e9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/24 10:50 linux-5.15.y 3a5928702e71 89298aad .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/24 08:42 linux-5.15.y 3a5928702e71 89298aad .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/23 13:07 linux-5.15.y 3a5928702e71 89298aad .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/22 07:14 linux-5.15.y 3a5928702e71 6f888b75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/19 21:45 linux-5.15.y 3a5928702e71 6f888b75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/19 21:45 linux-5.15.y 3a5928702e71 6f888b75 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/16 17:54 linux-5.15.y 3a5928702e71 c673ca06 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/14 23:28 linux-5.15.y 3a5928702e71 08d8a733 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/14 11:47 linux-5.15.y 3a5928702e71 c7e35043 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/14 01:02 linux-5.15.y 3a5928702e71 b58f933c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/14 01:02 linux-5.15.y 3a5928702e71 b58f933c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/09 04:34 linux-5.15.y 14e468424d3e 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/08 13:01 linux-5.15.y 14e468424d3e 9750182a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/05 04:38 linux-5.15.y 14e468424d3e dfbe2ed4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/05 03:33 linux-5.15.y 14e468424d3e dfbe2ed4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/04 22:14 linux-5.15.y 14e468424d3e dfbe2ed4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/04 16:26 linux-5.15.y 14e468424d3e 9d47f20a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/04 08:20 linux-5.15.y fa93fa65db6e 9d47f20a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/03 11:41 linux-5.15.y fa93fa65db6e 326f9c5a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/09/03 00:15 linux-5.15.y fa93fa65db6e 8045124c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/08/31 06:45 linux-5.15.y fa93fa65db6e 1eda0d14 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2024/08/30 19:46 linux-5.15.y fa93fa65db6e 1eda0d14 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
2025/05/16 11:54 linux-5.15.y 3b8db0e4f263 cfde8269 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in hfs_bnode_create
2025/04/24 04:14 linux-5.15.y f7347f400572 73a168d0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in hfs_bnode_create
2025/04/20 17:16 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in hfs_bnode_create
2025/04/18 17:12 linux-5.15.y f7347f400572 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in hfs_bnode_create
2025/04/14 17:56 linux-5.15.y f7347f400572 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in hfs_bnode_create
2025/03/23 20:43 linux-5.15.y 0c935c049b5c 4e8d3850 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in hfs_bnode_create
2025/03/21 12:47 linux-5.15.y 0c935c049b5c 62330552 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in hfs_bnode_create
2025/03/08 12:27 linux-5.15.y c16c81c81336 7e3bd60d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in hfs_bnode_create
2024/12/07 17:10 linux-5.15.y 0a51d2d4527b 9ac0fdc6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in hfs_bnode_create
2024/11/29 21:00 linux-5.15.y 0a51d2d4527b 5df23865 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in hfs_bnode_create
2024/11/29 08:24 linux-5.15.y 0a51d2d4527b 5df23865 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in hfs_bnode_create
2024/11/13 23:22 linux-5.15.y 3c17fc483905 bb3f8425 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in hfs_bnode_create
2024/09/18 22:46 linux-5.15.y 3a5928702e71 c673ca06 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in hfs_bnode_create
2023/04/04 01:35 linux-5.15.y c957cbb87315 41147e3e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfs_bnode_create
* Struck through repros no longer work on HEAD.