WARNING in btrfs_free_reserved_data_space_noquota (3)

Status: upstream: reported C repro on 2024/10/22 14:15
Subsystems: btrfs
Labels: prio:low
[Documentation on labels]
Reported-by: syzbot+9064acebb06685edb243@syzkaller.appspotmail.com
First crash: 754d, last: 47d
✨ AI-generated root cause summary:

In btrfs direct I/O writes, btrfs_dio_iomap_begin() reserves data space upfront via btrfs_check_data_free_space(), which accounts bytes in data_sinfo->bytes_may_use and sets dio_data->data_space_reserved = true. During btrfs_get_blocks_direct_write(), btrfs_reserve_extent() allocates an extent and transfers the allocated bytes from bytes_may_use to bytes_reserved via btrfs_add_reserved_bytes(). If a subsequent step fails (such as btrfs_create_dio_extent() failing to allocate an ordered extent or extent map), btrfs_free_reserved_extent() decrements bytes_reserved, but bytes_may_use is not restored. The error then propagates to the cleanup path in btrfs_dio_iomap_begin(), which attempts to free the full data reservation from bytes_may_use again because dio_data->data_space_reserved is still true, underflowing data_sinfo->bytes_may_use and triggering a WARN_ON in btrfs_space_info_update_bytes_may_use().

▶ ▼ ✨ Full AI root cause analysis
Based on kernel commit c71f8fb4dc91:

Root Cause Analysis

1. Involved Functions and Data Structures

2. Technical Mechanism

  1. Space Reservation in Direct I/O Write: When entering btrfs_dio_iomap_begin() for a non-NOWAIT direct I/O write, btrfs reserves data space upfront:

    ret = btrfs_check_data_free_space(BTRFS_I(inode), &dio_data->data_reserved,
                                  start, data_alloc_len, false);
if (!ret)
    dio_data->data_space_reserved = true;

    btrfs_check_data_free_space() increments data_sinfo->bytes_may_use by data_alloc_len.

  2. Extent Allocation and Space Transfer: Next, btrfs_get_blocks_direct_write() executes. In the COW write path, it invokes btrfs_new_extent_direct(), which calls btrfs_reserve_extent():

    ret = btrfs_reserve_extent(root, len, len, fs_info->sectorsize,
                           0, alloc_hint, &ins, 1, 1);

    Upon successfully finding free blocks, find_free_extent() calls btrfs_add_reserved_bytes():

    cache->reserved += num_bytes;
space_info->bytes_reserved += num_bytes;
btrfs_space_info_update_bytes_may_use(cache->fs_info, space_info, -ram_bytes);

    This converts the allocated range (ins.offset) from bytes_may_use to bytes_reserved by subtracting ins.offset from data_sinfo->bytes_may_use.

  3. Allocation Failure in btrfs_create_dio_extent: Following extent reservation, btrfs_new_extent_direct() calls:

    em = btrfs_create_dio_extent(inode, dio_data, start, &file_extent, BTRFS_ORDERED_REGULAR);

    If btrfs_create_dio_extent() encounters a failure (such as -ENOMEM from btrfs_create_io_em() or btrfs_alloc_ordered_extent(), injected via fault injection in the reproducer), btrfs_new_extent_direct() frees the reserved extent:

    if (IS_ERR(em))
    btrfs_free_reserved_extent(fs_info, ins.objectid, ins.offset, 1);
return em;

    btrfs_free_reserved_extent() calls btrfs_free_reserved_bytes(), which only decrements space_info->bytes_reserved. Crucially, it does not restore bytes_may_use.

  4. Double-Release in btrfs_dio_iomap_begin Error Path: btrfs_get_blocks_direct_write() returns the error (ret < 0), causing btrfs_dio_iomap_begin() to jump to unlock_err and fall through to err:

    err:
    if (dio_data->data_space_reserved) {
        btrfs_free_reserved_data_space(BTRFS_I(inode),
                                       dio_data->data_reserved,
                                       start, data_alloc_len);
        extent_changeset_free(dio_data->data_reserved);
    }

    Because dio_data->data_space_reserved was never cleared or adjusted, btrfs_free_reserved_data_space() calls btrfs_space_info_free_bytes_may_use(), attempting to subtract the entire data_alloc_len from data_sinfo->bytes_may_use.

  5. Underflow and WARNING: Since btrfs_add_reserved_bytes() had already subtracted ins.offset from data_sinfo->bytes_may_use, subtracting data_alloc_len again causes data_sinfo->bytes_may_use < -bytes. This triggers the warning condition inside btrfs_space_info_update_bytes_may_use():

    if (bytes < 0 && sinfo->name < -bytes) {
    WARN_ON(1);
    sinfo->name = 0;
    return;
}
▶ ▼ ✨ AI Patch Versions (2)
Version Stage Reported Report Link Job
2 moderation 2026/05/22 18:53 Discussion 343be34d-df17-4e23-82ac-9918e4cd4783
1 moderation 2026/05/22 00:53 Discussion 913538c5-7b36-4127-ab45-6efa99a3628e
▶ ▼ ✨ AI Jobs (12)
ID Workflow Result Correct Bug Created Started Finished Revision
7f8e720f assessment-security DenialOfService: ❌ Exploitable: ❌ FilesystemTrigger: ❌ FuzzingArtifact: ❌ MemoryCorruption: ❌ NetworkNeedsSetup: ❌ NetworkTrigger: ❌ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ✅ UserNamespace: ✅ VMGuestTrigger: ❌ VMHostTrigger: ❌ ❓ WARNING in btrfs_free_reserved_data_space_noquota (3) 2026/11/09 06:52 2026/11/09 06:52 2026/11/09 07:20 5cecaf1f
95f384e4 assessment-security 💥 WARNING in btrfs_free_reserved_data_space_noquota (3) 2026/10/09 05:12 2026/10/09 05:12 2026/10/09 05:39 b2734a59
0b72f654 assessment-security 💥 WARNING in btrfs_free_reserved_data_space_noquota (3) 2026/09/09 04:06 2026/09/09 04:06 2026/09/09 04:31 243b72f1
690475ce assessment-security 💥 WARNING in btrfs_free_reserved_data_space_noquota (3) 2026/08/09 23:10 2026/08/09 23:10 2026/08/09 23:25 5d63f80b
961aa8e0 assessment-security 💥 WARNING in btrfs_free_reserved_data_space_noquota (3) 2026/07/09 01:50 2026/07/09 01:51 2026/07/09 02:14 93f57954
bc8591de assessment-security 💥 WARNING in btrfs_free_reserved_data_space_noquota (3) 2026/06/22 03:57 2026/06/22 03:57 2026/06/22 04:26 43bfcdb0
3ecc7ca9 assessment-security 💥 WARNING in btrfs_free_reserved_data_space_noquota (3) 2026/06/14 03:12 2026/06/14 03:12 2026/06/14 03:33 4f06757f
6bf741e2 assessment-security 💥 WARNING in btrfs_free_reserved_data_space_noquota (3) 2026/06/09 18:53 2026/06/09 18:53 2026/06/09 19:20 c36c07f6
48b5c33a assessment-security 💥 WARNING in btrfs_free_reserved_data_space_noquota (3) 2026/06/02 17:44 2026/06/02 17:44 2026/06/02 18:11 62fe1528
ecffb673 assessment-security 💥 WARNING in btrfs_free_reserved_data_space_noquota (3) 2026/05/26 06:45 2026/05/26 06:45 2026/05/26 07:05 c69befb3
343be34d patch-iteration ❓ WARNING in btrfs_free_reserved_data_space_noquota (3) 2026/05/22 18:19 2026/05/22 18:19 2026/05/22 18:53 df8ac09c
913538c5 patching ❓ WARNING in btrfs_free_reserved_data_space_noquota (3) 2026/05/21 20:52 2026/05/21 21:14 2026/05/22 00:52 d5742584
▶ ▼ Discussions (3)
Title Replies (including bot) Last reply
[syzbot] Monthly btrfs report (Jul 2026) 0 (1) 2026/07/04 12:32
[syzbot] Monthly btrfs report (Jun 2026) 0 (1) 2026/06/03 04:32
[syzbot] [btrfs?] WARNING in btrfs_free_reserved_data_space_noquota (3) 0 (2) 2024/10/26 05:29
▶ ▼ Similar bugs (2)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in btrfs_free_reserved_data_space_noquota btrfs -1 syz, C done done 7 1031d 1443d 25/29 fixed on 2024/05/19 05:34
upstream WARNING in btrfs_free_reserved_data_space_noquota (2) btrfs -1 1 875d 871d 0/29 auto-obsoleted due to no activity on 2024/09/27 21:32
▶ ▼ Last patch testing requests (10)
Created Duration User Patch Repo Result
2026/11/10 18:51 22m retest repro upstream no crash job log log
2026/09/01 18:15 14m retest repro upstream error job log
2026/06/23 16:37 24m retest repro upstream report log
2026/06/04 01:47 40m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci no crash log
2026/04/11 01:01 16m retest repro upstream error
2026/03/21 19:23 38m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci error
2026/01/31 00:06 15m retest repro upstream report log
2026/01/10 17:53 1h07m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log
2025/11/21 23:45 19m retest repro upstream report log
2025/11/01 16:57 19m retest repro git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci report log

Sample crash report:
loop0: detected capacity change from 0 to 32768
BTRFS: device fsid c9fe44da-de57-406a-8241-57ec7d4412cf devid 1 transid 8 /dev/loop0 (7:0) scanned by syz.0.0 (5323)
BTRFS info (device loop0): first mount of filesystem c9fe44da-de57-406a-8241-57ec7d4412cf
BTRFS info (device loop0): using crc32c checksum algorithm
BTRFS info (device loop0): enabling ssd optimizations
BTRFS info (device loop0): enabling free space tree
BTRFS info (device loop0): enabling auto defrag
BTRFS info (device loop0): use zlib compression, level 3
BTRFS info (device loop0): max_inline set to 0
FAULT_INJECTION: forcing a failure.
name failslab, interval 1, probability 0, space 0, times 1
CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
Call Trace:
 <TASK>
 dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
 fail_dump lib/fault-inject.c:73 [inline]
 should_fail_ex+0x410/0x560 lib/fault-inject.c:174
 should_failslab+0xa8/0x100 mm/failslab.c:46
 slab_pre_alloc_hook mm/slub.c:4638 [inline]
 slab_alloc_node mm/slub.c:4974 [inline]
 kmem_cache_alloc_noprof+0xa1/0x600 mm/slub.c:5010
 btrfs_alloc_extent_map+0x21/0xf0 fs/btrfs/extent_map.c:48
 btrfs_create_io_em+0x22b/0x6d0 fs/btrfs/inode.c:7592
 btrfs_create_dio_extent+0x4b/0x160 fs/btrfs/direct-io.c:151
 btrfs_new_extent_direct fs/btrfs/direct-io.c:205 [inline]
 btrfs_get_blocks_direct_write+0x8cb/0xea0 fs/btrfs/direct-io.c:330
 btrfs_dio_iomap_begin fs/btrfs/direct-io.c:540 [inline]
 iomap_iter_next include/linux/iomap.h:382 [inline]
 btrfs_dio_iomap_next+0x1075/0x16c0 fs/btrfs/direct-io.c:807
 iomap_iter+0xe2/0xec0 fs/iomap/iter.c:122
 __iomap_dio_rw+0xc87/0x1c40 fs/iomap/direct-io.c:815
 btrfs_dio_write fs/btrfs/direct-io.c:861 [inline]
 btrfs_direct_write+0x7fe/0xce0 fs/btrfs/direct-io.c:965
 btrfs_do_write_iter+0x325/0x790 fs/btrfs/file.c:1427
 aio_write+0x5d0/0x870 fs/aio.c:1687
 __io_submit_one fs/aio.c:-1 [inline]
 io_submit_one+0x798/0x13d0 fs/aio.c:2106
 __do_sys_io_submit fs/aio.c:2165 [inline]
 __se_sys_io_submit+0x195/0x340 fs/aio.c:2135
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f13df59e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f13db9f4fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007f13df825fa0 RCX: 00007f13df59e159
RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f13e035f000
RBP: 00007f13db9f5050 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007f13df826038 R14: 00007f13df825fa0 R15: 00007ffd4fba8788
 </TASK>
------------[ cut here ]------------
1
WARNING: fs/btrfs/space-info.h:286 at btrfs_space_info_update_bytes_may_use fs/btrfs/space-info.h:286 [inline], CPU#0: syz.0.0/5323
WARNING: fs/btrfs/space-info.h:286 at btrfs_space_info_free_bytes_may_use fs/btrfs/space-info.h:323 [inline], CPU#0: syz.0.0/5323
WARNING: fs/btrfs/space-info.h:286 at btrfs_free_reserved_data_space_noquota+0x3df/0x680 fs/btrfs/delalloc-space.c:191, CPU#0: syz.0.0/5323
Modules linked in:
CPU: 0 UID: 0 PID: 5323 Comm: syz.0.0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014
RIP: 0010:btrfs_space_info_update_bytes_may_use fs/btrfs/space-info.h:286 [inline]
RIP: 0010:btrfs_space_info_free_bytes_may_use fs/btrfs/space-info.h:323 [inline]
RIP: 0010:btrfs_free_reserved_data_space_noquota+0x3df/0x680 fs/btrfs/delalloc-space.c:191
Code: 00 74 08 48 89 ef e8 40 72 f8 fd 4c 8b 7d 00 4c 89 ff 4c 8b 64 24 08 4c 89 e6 e8 3c d2 86 fd 4d 39 e7 73 16 e8 62 cf 86 fd 90 <0f> 0b 90 45 31 ff 41 80 7c 1d 00 00 75 94 eb 9a e8 4c cf 86 fd 41
RSP: 0018:ffffc9000ee372e8 EFLAGS: 00010293
RAX: ffffffff84411dae RBX: dffffc0000000000 RCX: ffff888036b68000
RDX: 0000000000000000 RSI: 0000000000800000 RDI: 000000000067d000
RBP: ffff88801294b080 R08: ffffffff907a847f R09: 1ffffffff20f508f
R10: dffffc0000000000 R11: fffffbfff20f5090 R12: 0000000000800000
R13: 1ffff11002529610 R14: ffff88801294b000 R15: 000000000067d000
FS:  00007f13db9f56c0(0000) GS:ffff88808c2bf000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f13e035f000 CR3: 0000000043a13000 CR4: 0000000000352ef0
Call Trace:
 <TASK>
 btrfs_free_reserved_data_space+0x9f/0xe0 fs/btrfs/delalloc-space.c:211
 btrfs_dio_iomap_begin fs/btrfs/direct-io.c:613 [inline]
 iomap_iter_next include/linux/iomap.h:382 [inline]
 btrfs_dio_iomap_next+0xeb4/0x16c0 fs/btrfs/direct-io.c:807
 iomap_iter+0xe2/0xec0 fs/iomap/iter.c:122
 __iomap_dio_rw+0xc87/0x1c40 fs/iomap/direct-io.c:815
 btrfs_dio_write fs/btrfs/direct-io.c:861 [inline]
 btrfs_direct_write+0x7fe/0xce0 fs/btrfs/direct-io.c:965
 btrfs_do_write_iter+0x325/0x790 fs/btrfs/file.c:1427
 aio_write+0x5d0/0x870 fs/aio.c:1687
 __io_submit_one fs/aio.c:-1 [inline]
 io_submit_one+0x798/0x13d0 fs/aio.c:2106
 __do_sys_io_submit fs/aio.c:2165 [inline]
 __se_sys_io_submit+0x195/0x340 fs/aio.c:2135
 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline]
 do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f13df59e159
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f13db9f4fe8 EFLAGS: 00000246 ORIG_RAX: 00000000000000d1
RAX: ffffffffffffffda RBX: 00007f13df825fa0 RCX: 00007f13df59e159
RDX: 0000200000000540 RSI: 000000000000003b RDI: 00007f13e035f000
RBP: 00007f13db9f5050 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002
R13: 00007f13df826038 R14: 00007f13df825fa0 R15: 00007ffd4fba8788
 </TASK>

Crashes (35):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/09/25 14:17 upstream 165768bb7026 f281d9d2 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2026/09/11 16:22 upstream 08df884136f1 9c29f801 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2026/07/15 13:03 upstream 58717b2a1365 a4ed0f4f .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2026/06/09 15:25 upstream 2d3090a8aeb5 c36c07f6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2026/05/21 01:37 upstream df685633c3db 41b8c833 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2026/05/15 13:59 upstream 70eda68668d1 9cd3beaa .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2026/05/15 13:58 upstream 70eda68668d1 9cd3beaa .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2026/05/15 01:47 upstream 66182ca873a4 6ccb967e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2026/05/11 12:42 upstream 5d6919055dec 845acb1c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2026/05/10 04:09 upstream 1bfaee9d3351 29233ece .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2026/04/14 20:42 upstream d60bc1401583 362d1323 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2026/04/14 17:50 upstream d60bc1401583 362d1323 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2026/02/22 11:38 upstream 32a92f8c8932 6e7b5511 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2026/02/19 07:04 upstream 956b9cbd7f15 746545b8 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2026/02/17 22:13 upstream d295082ea672 f4288eed .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2026/02/17 00:20 upstream 0f2acd3148e0 5d52cba5 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2026/02/15 11:21 upstream ca4ee40bf13d 1e62d198 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2026/02/11 14:06 upstream 192c0159402e 75707236 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2025/03/25 17:34 upstream 2f2d52945852 875573af .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro (clean fs)] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2025/03/25 16:55 upstream 2f2d52945852 875573af .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2025/01/31 20:30 upstream 69e858e0b8b2 aa47157c .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2025/01/02 01:18 upstream 56e6a3499e14 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2024/12/26 14:32 upstream 9b2ffa6148b1 d3ccff63 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2024/12/14 16:11 upstream a446e965a188 7cbfbb3a .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2024/12/06 14:45 upstream b8f52214c61a 9ac0fdc6 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2024/12/04 00:19 upstream ceb8bf2ceaa7 b50eb251 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2024/12/01 01:50 upstream d8b78066f4c9 68914665 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2024/11/09 16:46 upstream da4373fbcf00 6b856513 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2024/11/08 15:39 upstream 906bd684e4b1 d40c056e .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2024/10/26 05:29 upstream c71f8fb4dc91 65e8686b .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] [mounted in repro] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2024/10/26 05:02 upstream c71f8fb4dc91 65e8686b .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2024/10/18 14:11 upstream 4d939780b705 0270e729 .config console log report [disk image (non-bootable)] [vmlinux] [kernel image] ci-snapshot-upstream-root WARNING in btrfs_free_reserved_data_space_noquota
2025/08/29 07:35 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 8f5ae30d69d7 3e1beec6 .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in btrfs_free_reserved_data_space_noquota
2025/08/09 13:44 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 82af5ea7c611 32a0e5ed .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci-upstream-gce-arm64 WARNING in btrfs_free_reserved_data_space_noquota
2025/08/09 13:06 git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci 82af5ea7c611 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci-upstream-gce-arm64 WARNING in btrfs_free_reserved_data_space_noquota
* Struck through repros no longer work on HEAD.