On 2019/8/6 下午9:58, David Sterba wrote:
> On Thu, Jul 25, 2019 at 02:12:20PM +0800, Qu Wenruo wrote:
>>
>> if (!first_key)
>> return 0;
>> + /* We have @first_key, so this @eb must have at least one item */
>> + if (btrfs_header_nritems(eb) == 0) {
>> + btrfs_err(fs_info,
>> + "invalid tree nritems, bytenr=%llu nritems=0 expect >0",
>> + eb->start);
>> + WARN_ON(IS_ENABLED(CONFIG_BTRFS_DEBUG));
>> + return -EUCLEAN;
>> + }
>
> generic/015 complains:
>
> generic/015 [13:51:40][ 5949.416657] run fstests generic/015 at
> 2019-08-06 13:51:40I hit this once, but not this test case. The same backtrace for csum tree. Have you ever hit it again? Thanks, Qu > [ 5949.603473] BTRFS: device fsid 6a7e1bd0-42d2-4bab-9d9e-791635466751 devid > 1 transid 5 /dev/vdb > [ 5949.616969] BTRFS info (device vdb): turning on discard > [ 5949.619414] BTRFS info (device vdb): disk space caching is enabled > [ 5949.622493] BTRFS info (device vdb): has skinny extents > [ 5949.624694] BTRFS info (device vdb): flagging fs with big metadata feature > [ 5949.629003] BTRFS info (device vdb): checking UUID tree > [ 5949.802548] BTRFS error (device vdb): invalid tree nritems, > bytenr=30736384 nritems=0 expect >0 > [ 5949.806259] ------------[ cut here ]------------ > [ 5949.808127] WARNING: CPU: 1 PID: 27019 at fs/btrfs/disk-io.c:417 > btrfs_verify_level_key.cold+0x1e/0x2b [btrfs] > [ 5949.811946] Modules linked in: dm_log_writes dm_flakey dm_mod btrfs > libcrc32c xor zstd_decompress zstd_compress xxhash raid6_pq loop af_packet > [ 5949.816321] CPU: 1 PID: 27019 Comm: kworker/u8:10 Tainted: G W > 5.3.0-rc3-next-20190806-default #5 > [ 5949.819269] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS > rel-1.12.1-0-ga5cab58-prebuilt.qemu.org 04/01/2014 > [ 5949.822202] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs] > [ 5949.824231] RIP: 0010:btrfs_verify_level_key.cold+0x1e/0x2b [btrfs] > [ 5949.825348] Code: ff ff e8 9f c8 ff ff e9 4d 58 f5 ff 48 8b 13 48 c7 c6 48 > 9c 48 c0 48 89 ef e8 88 c8 ff ff 48 c7 c7 c0 95 48 c0 e8 c0 e9 c6 df <0f> 0b > 41 be 8b ff ff ff e9 dd 5a f5 ff be e9 05 00 00 48 c7 > c7 40 > [ 5949.828251] RSP: 0018:ffffab1288803ab8 EFLAGS: 00010246 > [ 5949.829759] RAX: 0000000000000024 RBX: ffff9d4f6ed47b10 RCX: > 0000000000000001 > [ 5949.830961] RDX: 0000000000000000 RSI: 0000000000000001 RDI: > ffffffffa00d02ca > [ 5949.832107] RBP: ffff9d4f60568000 R08: 0000000000000000 R09: > 0000000000000000 > [ 5949.833414] R10: 0000000000000000 R11: 0000000000000000 R12: > 0000000000000006 > [ 5949.834508] R13: ffffab1288803b6e R14: ffff9d4f3325e850 R15: > 0000000000000000 > [ 5949.835572] FS: 0000000000000000(0000) GS:ffff9d4f7d800000(0000) > knlGS:0000000000000000 > [ 5949.837190] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > [ 5949.838135] CR2: 00005645c3a0c078 CR3: 0000000014011000 CR4: > 00000000000006e0 > [ 5949.839197] Call Trace: > [ 5949.839729] read_block_for_search.isra.0+0x13d/0x3d0 [btrfs] > [ 5949.840909] btrfs_search_slot+0x25d/0xc10 [btrfs] > [ 5949.841796] btrfs_lookup_csum+0x6a/0x160 [btrfs] > [ 5949.842561] ? kmem_cache_alloc+0x1f2/0x280 > [ 5949.843268] btrfs_csum_file_blocks+0x198/0x6f0 [btrfs] > [ 5949.844305] add_pending_csums+0x50/0x70 [btrfs] > [ 5949.845553] btrfs_finish_ordered_io+0x3cb/0x7f0 [btrfs] > [ 5949.846963] normal_work_helper+0xd1/0x540 [btrfs] > [ 5949.848258] process_one_work+0x22d/0x580 > [ 5949.849337] worker_thread+0x50/0x3b0 > [ 5949.850361] kthread+0xfe/0x140 > [ 5949.851267] ? process_one_work+0x580/0x580 > [ 5949.852405] ? kthread_park+0x80/0x80 > [ 5949.853429] ret_from_fork+0x24/0x30 > [ 5949.854422] irq event stamp: 0 > [ 5949.855341] hardirqs last enabled at (0): [<0000000000000000>] 0x0 > [ 5949.856688] hardirqs last disabled at (0): [<ffffffffa005ff00>] > copy_process+0x6d0/0x1ac0 > [ 5949.858104] softirqs last enabled at (0): [<ffffffffa005ff00>] > copy_process+0x6d0/0x1ac0 > [ 5949.859400] softirqs last disabled at (0): [<0000000000000000>] 0x0 > [ 5949.860611] ---[ end trace f6f3adf90f4ea40f ]--- > [ 5949.862745] ------------[ cut here ]------------ > [ 5949.864103] BTRFS: Transaction aborted (error -117) > [ 5949.865577] WARNING: CPU: 1 PID: 27019 at fs/btrfs/inode.c:3175 > btrfs_finish_ordered_io+0x781/0x7f0 [btrfs] > [ 5949.868267] Modules linked in: dm_log_writes dm_flakey dm_mod btrfs > libcrc32c xor zstd_decompress zstd_compress xxhash raid6_pq loop af_packet > [ 5949.872781] CPU: 1 PID: 27019 Comm: kworker/u8:10 Tainted: G W > 5.3.0-rc3-next-20190806-default #5 > [ 5949.875535] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS > rel-1.12.1-0-ga5cab58-prebuilt.qemu.org 04/01/2014 > [ 5949.878428] Workqueue: btrfs-endio-write btrfs_endio_write_helper [btrfs] > [ 5949.880211] RIP: 0010:btrfs_finish_ordered_io+0x781/0x7f0 [btrfs] > [ 5949.881317] Code: e9 aa fc ff ff 49 8b 47 50 f0 48 0f ba a8 e8 33 00 00 02 > 72 17 41 83 fd fb 74 5b 44 89 ee 48 c7 c7 08 b4 48 c0 e8 22 55 c9 df <0f> 0b > 44 89 e9 ba 67 0c 00 00 eb b0 88 5c 24 10 41 89 de 41 > bd fb >
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