WARNING in hfsplus_free_extents

Status: auto-obsoleted due to no activity on 2025/11/10 13:23
Bug presence: origin:upstream
[Documentation on labels]
Reported-by: syzbot+4b5f0821b1142785380e@syzkaller.appspotmail.com
First crash: 1207d, last: 399d
Fix bisection: failed (error log, bisect log)
  
▶ ▼ Bug presence (1)
Date Name Commit Repro Result
2023/07/23 upstream (ToT) c2782531397f C [report] WARNING in hfsplus_free_extents
▶ ▼ Similar bugs (4)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-6.1 WARNING in hfsplus_free_extents -1 syz, C error 44 440d 1086d 0/3 auto-obsoleted due to no activity on 2025/09/30 14:37
linux-4.19 WARNING in hfsplus_free_extents hfsplus -1 syz, C 29 1279d 1356d 0/1 upstream: reported C repro on 2022/12/19 07:06
upstream WARNING in hfsplus_free_extents hfs -1 syz, C error 402 409d 1370d 29/29 fixed on 2025/09/04 16:57
linux-6.6 WARNING in hfsplus_free_extents -1 1 405d 405d 0/2 auto-obsoleted due to no activity on 2025/11/04 03:02
▶ ▼ Last patch testing requests (9)
Created Duration User Patch Repo Result
2025/10/14 00:18 44m retest repro linux-5.15.y no crash log
2025/09/23 02:13 20m retest repro linux-5.15.y no crash log
2025/09/23 02:13 55m retest repro linux-5.15.y no crash log
2025/09/21 11:32 19m retest repro linux-5.15.y no crash log
2025/08/02 13:11 10m retest repro linux-5.15.y report log
2025/07/13 06:01 18m retest repro linux-5.15.y report log
2025/07/13 06:01 12m retest repro linux-5.15.y report log
2025/07/13 06:01 16m retest repro linux-5.15.y report log
2025/05/23 03:39 12m retest repro linux-5.15.y report log
▶ ▼ Fix bisection attempts (8)
Created Duration User Patch Repo Result
2024/07/20 18:12 18m bisect fix linux-5.15.y error job log
2024/06/06 11:51 2h18m bisect fix linux-5.15.y OK (0) job log log
2024/04/03 23:52 1h19m bisect fix linux-5.15.y OK (0) job log log
2024/03/04 08:13 1h35m bisect fix linux-5.15.y OK (0) job log log
2024/01/27 09:06 1h10m bisect fix linux-5.15.y OK (0) job log log
2023/12/27 06:28 1h06m bisect fix linux-5.15.y OK (0) job log log
2023/11/26 21:29 1h19m bisect fix linux-5.15.y OK (0) job log log
2023/10/26 15:23 1h09m bisect fix linux-5.15.y OK (0) job log log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6470 at fs/hfsplus/extents.c:346 hfsplus_free_extents+0x6e9/0xac0 fs/hfsplus/extents.c:346
Modules linked in:

CPU: 0 PID: 6470 Comm: syz.5.532 Not tainted 5.15.186-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:hfsplus_free_extents+0x6e9/0xac0 fs/hfsplus/extents.c:346
Code: 8b 1b 0f cb 89 ef 89 de e8 34 81 4d ff 39 dd 75 20 49 83 c7 28 e8 c7 7f 4d ff 41 bc 05 00 00 00 e9 fa f9 ff ff e8 b7 7f 4d ff <0f> 0b e9 9d f9 ff ff 89 ef 89 de e8 07 81 4d ff 29 dd 73 0a e8 9e
RSP: 0018:ffffc90003c4f890 EFLAGS: 00010283
RAX: ffffffff822a4359 RBX: ffff888062720020 RCX: 0000000000080000
RDX: ffffc90014315000 RSI: 0000000000026866 RDI: 0000000000026867
RBP: 000000000000014e R08: dffffc0000000000 R09: ffffed1004ade00a
R10: ffffed1004ade00a R11: 1ffff11004ade009 R12: ffff888078bdc000
R13: 1ffff92000789f30 R14: 000000000000014e R15: ffff88807b78bcd8
FS:  00007fa1bec6c6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3051bff8 CR3: 000000001d148000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 hfsplus_file_truncate+0x745/0xb40 fs/hfsplus/extents.c:592
 hfsplus_write_begin+0xd4/0xe0 fs/hfsplus/inode.c:57
 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: 0033:0x7fa1c0e46929
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:00007fa1bec6c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fa1c106e160 RCX: 00007fa1c0e46929
RDX: 000000000208e24b RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007fa1c0ec8b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fa1c106e160 R15: 00007ffcf9990ab8
 </TASK>

Crashes (24):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/06/28 14:22 linux-5.15.y 3dea0e7f549e fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2025/06/16 16:32 linux-5.15.y 1c700860e8bc d1716036 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2025/06/14 03:20 linux-5.15.y 1c700860e8bc 0e8da31f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2025/06/09 07:24 linux-5.15.y 1c700860e8bc 4826c28e .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2025/06/09 06:35 linux-5.15.y 1c700860e8bc 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2025/06/09 06:29 linux-5.15.y 1c700860e8bc 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2025/06/09 06:26 linux-5.15.y 1c700860e8bc 4826c28e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2025/02/14 16:27 linux-5.15.y c16c81c81336 1022af74 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2024/12/31 14:28 linux-5.15.y 91786f140358 d3ccff63 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2024/12/31 13:25 linux-5.15.y 91786f140358 d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2024/10/31 10:56 linux-5.15.y 74cdd62cb470 96eb609f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2024/09/13 12:21 linux-5.15.y 3a5928702e71 73e8a465 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2024/04/07 18:39 linux-5.15.y 9465fef4ae35 ca620dd8 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2023/09/22 07:01 linux-5.15.y 35ecaa3632bf 0b6a67ac .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2023/09/11 18:36 linux-5.15.y aff03380bda4 59da8366 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2023/08/14 01:28 linux-5.15.y 24c4de4069cb 39990d51 .config console log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2023/07/23 09:09 linux-5.15.y d54cfc420586 27cbe77f .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2025/03/20 22:12 linux-5.15.y 0c935c049b5c 62330552 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in hfsplus_free_extents
2025/02/27 23:03 linux-5.15.y c16c81c81336 6a8fcbc4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan-arm64 WARNING in hfsplus_free_extents
2024/08/12 05:08 linux-5.15.y 7e89efd3ae1c 6f4edef4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in hfsplus_free_extents
2024/05/06 16:40 linux-5.15.y 284087d4f7d5 d884b519 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in hfsplus_free_extents
2024/04/30 14:43 linux-5.15.y b925f60c6ee7 3ce4924c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in hfsplus_free_extents
2023/07/26 01:36 linux-5.15.y 5c6a716301d9 6756545c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
2023/05/17 17:56 linux-5.15.y 9d6bde853685 eaac4681 .config console log report info ci2-linux-5-15-kasan WARNING in hfsplus_free_extents
* Struck through repros no longer work on HEAD.