| Date | Name | Commit | Repro | Result | 
|---|---|---|---|---|
| 2025/10/27 | linux-6.6.y (ToT) | 4a243110dc88 | C | [report] WARNING in btrfs_chunk_alloc | 
| 2025/10/27 | upstream (ToT) | dcb6fa37fd7b | C | Didn't crash | 
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| Date | Name | Commit | Repro | Result | 
|---|---|---|---|---|
| 2025/10/27 | linux-6.6.y (ToT) | 4a243110dc88 | C | [report] WARNING in btrfs_chunk_alloc | 
| 2025/10/27 | upstream (ToT) | dcb6fa37fd7b | C | Didn't crash | 
| Kernel | Title | Rank 🛈 | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status | 
|---|---|---|---|---|---|---|---|---|---|---|
| linux-5.15 | WARNING in btrfs_chunk_alloc | -1 | 6 | 870d | 953d | 0/3 | auto-obsoleted due to no activity on 2023/09/22 15:34 | |||
| linux-6.1 | WARNING in btrfs_chunk_alloc (2) origin:lts-only | -1 | C | done | 55 | 49d | 716d | 0/3 | upstream: reported C repro on 2023/11/15 16:30 | |
| linux-6.1 | WARNING in btrfs_chunk_alloc | -1 | 1 | 948d | 948d | 0/3 | auto-obsoleted due to no activity on 2023/07/26 13:54 | |||
| upstream | WARNING in btrfs_chunk_alloc btrfs | -1 | C | inconclusive | done | 638 | 3h23m | 1074d | 0/29 | upstream: reported C repro on 2022/11/22 11:56 | 
| linux-6.6 | WARNING in btrfs_chunk_alloc | -1 | 1 | 122d | 122d | 0/2 | auto-obsoleted due to no activity on 2025/10/09 03:44 | |||
| linux-5.15 | WARNING in btrfs_chunk_alloc (2) origin:lts-only | -1 | C | 46 | 12h30m | 767d | 0/3 | upstream: reported C repro on 2023/09/25 19:35 | 
------------[ cut here ]------------ BTRFS: Transaction aborted (error -28) WARNING: CPU: 0 PID: 42 at fs/btrfs/block-group.c:3947 do_chunk_alloc fs/btrfs/block-group.c:3947 [inline] WARNING: CPU: 0 PID: 42 at fs/btrfs/block-group.c:3947 btrfs_chunk_alloc+0xe42/0xfe0 fs/btrfs/block-group.c:4189 Modules linked in: CPU: 0 PID: 42 Comm: kworker/u4:2 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 Workqueue: events_unbound btrfs_async_reclaim_data_space RIP: 0010:do_chunk_alloc fs/btrfs/block-group.c:3947 [inline] RIP: 0010:btrfs_chunk_alloc+0xe42/0xfe0 fs/btrfs/block-group.c:4189 Code: c7 40 f7 ee 8a 89 ee e8 4c fc b7 fd 0f 0b 4c 89 fb e9 2f fe ff ff e8 cd 7e ed fd 48 c7 c7 40 f7 ee 8a 44 89 f6 e8 2e fc b7 fd <0f> 0b 4c 89 fb e9 7c fe ff ff e8 af 7e ed fd 48 c7 c7 40 f7 ee 8a RSP: 0018:ffffc90000b37918 EFLAGS: 00010246 RAX: 7850eb74c2146200 RBX: ffff88805ea44001 RCX: ffff8880192a9e00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: 0000000000000000 R08: ffffc90000b37527 R09: 1ffff92000166ea4 R10: dffffc0000000000 R11: fffff52000166ea5 R12: ffff888023a66800 R13: dffffc0000000000 R14: ffffffffffffffe4 R15: ffff88806e308800 FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000717000 CR3: 000000000cb30000 CR4: 00000000003506f0 Call Trace: <TASK> flush_space+0x516/0xd10 fs/btrfs/space-info.c:764 btrfs_async_reclaim_data_space+0x12a/0x530 fs/btrfs/space-info.c:1283 process_one_work kernel/workqueue.c:2634 [inline] process_scheduled_works+0xa45/0x15b0 kernel/workqueue.c:2711 worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 </TASK>
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title | 
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025/10/25 16:21 | linux-6.6.y | 4a243110dc88 | c0460fcd | .config | console log | report | syz / log | C | [disk image] [vmlinux] [kernel image] [mounted in repro (clean fs)] | ci2-linux-6-6-kasan | WARNING in btrfs_chunk_alloc | |
| 2025/10/25 19:55 | linux-6.6.y | 4a243110dc88 | c0460fcd | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-6-kasan | WARNING in btrfs_chunk_alloc | ||
| 2025/10/25 18:52 | linux-6.6.y | 4a243110dc88 | c0460fcd | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-6-kasan | WARNING in btrfs_chunk_alloc | ||
| 2025/10/25 18:49 | linux-6.6.y | 4a243110dc88 | c0460fcd | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-6-kasan | WARNING in btrfs_chunk_alloc | ||
| 2025/10/25 18:43 | linux-6.6.y | 4a243110dc88 | c0460fcd | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-6-kasan | WARNING in btrfs_chunk_alloc | ||
| 2025/10/25 14:29 | linux-6.6.y | 4a243110dc88 | c0460fcd | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-6-kasan | WARNING in btrfs_chunk_alloc | ||
| 2025/10/25 14:23 | linux-6.6.y | 4a243110dc88 | c0460fcd | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-6-kasan | WARNING in btrfs_chunk_alloc | ||
| 2025/10/24 07:19 | linux-6.6.y | 4a243110dc88 | c0460fcd | .config | console log | report | info | [disk image] [vmlinux] [kernel image] | ci2-linux-6-6-kasan | WARNING in btrfs_chunk_alloc |