| { |
| "containers": { |
| "cna": { |
| "providerMetadata": { |
| "orgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038" |
| }, |
| "descriptions": [ |
| { |
| "lang": "en", |
| "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbtrfs: fix re-dirty process of tree-log nodes\n\nThere is a report of a transaction abort of -EAGAIN with the following\nscript.\n\n #!/bin/sh\n\n for d in sda sdb; do\n mkfs.btrfs -d single -m single -f /dev/\\${d}\n done\n\n mount /dev/sda /mnt/test\n mount /dev/sdb /mnt/scratch\n\n for dir in test scratch; do\n echo 3 >/proc/sys/vm/drop_caches\n fio --directory=/mnt/\\${dir} --name=fio.\\${dir} --rw=read --size=50G --bs=64m \\\n --numjobs=$(nproc) --time_based --ramp_time=5 --runtime=480 \\\n --group_reporting |& tee /dev/shm/fio.\\${dir}\n echo 3 >/proc/sys/vm/drop_caches\n done\n\n for d in sda sdb; do\n umount /dev/\\${d}\n done\n\nThe stack trace is shown in below.\n\n [3310.967991] BTRFS: error (device sda) in btrfs_commit_transaction:2341: errno=-11 unknown (Error while writing out transaction)\n [3310.968060] BTRFS info (device sda): forced readonly\n [3310.968064] BTRFS warning (device sda): Skipping commit of aborted transaction.\n [3310.968065] ------------[ cut here ]------------\n [3310.968066] BTRFS: Transaction aborted (error -11)\n [3310.968074] WARNING: CPU: 14 PID: 1684 at fs/btrfs/transaction.c:1946 btrfs_commit_transaction.cold+0x209/0x2c8\n [3310.968131] CPU: 14 PID: 1684 Comm: fio Not tainted 5.14.10-300.fc35.x86_64 #1\n [3310.968135] Hardware name: DIAWAY Tartu/Tartu, BIOS V2.01.B10 04/08/2021\n [3310.968137] RIP: 0010:btrfs_commit_transaction.cold+0x209/0x2c8\n [3310.968144] RSP: 0018:ffffb284ce393e10 EFLAGS: 00010282\n [3310.968147] RAX: 0000000000000026 RBX: ffff973f147b0f60 RCX: 0000000000000027\n [3310.968149] RDX: ffff974ecf098a08 RSI: 0000000000000001 RDI: ffff974ecf098a00\n [3310.968150] RBP: ffff973f147b0f08 R08: 0000000000000000 R09: ffffb284ce393c48\n [3310.968151] R10: ffffb284ce393c40 R11: ffffffff84f47468 R12: ffff973f101bfc00\n [3310.968153] R13: ffff971f20cf2000 R14: 00000000fffffff5 R15: ffff973f147b0e58\n [3310.968154] FS: 00007efe65468740(0000) GS:ffff974ecf080000(0000) knlGS:0000000000000000\n [3310.968157] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033\n [3310.968158] CR2: 000055691bcbe260 CR3: 000000105cfa4001 CR4: 0000000000770ee0\n [3310.968160] PKRU: 55555554\n [3310.968161] Call Trace:\n [3310.968167] ? dput+0xd4/0x300\n [3310.968174] btrfs_sync_file+0x3f1/0x490\n [3310.968180] __x64_sys_fsync+0x33/0x60\n [3310.968185] do_syscall_64+0x3b/0x90\n [3310.968190] entry_SYSCALL_64_after_hwframe+0x44/0xae\n [3310.968194] RIP: 0033:0x7efe6557329b\n [3310.968200] RSP: 002b:00007ffe0236ebc0 EFLAGS: 00000293 ORIG_RAX: 000000000000004a\n [3310.968203] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007efe6557329b\n [3310.968204] RDX: 0000000000000000 RSI: 00007efe58d77010 RDI: 0000000000000006\n [3310.968205] RBP: 0000000004000000 R08: 0000000000000000 R09: 00007efe58d77010\n [3310.968207] R10: 0000000016cacc0c R11: 0000000000000293 R12: 00007efe5ce95980\n [3310.968208] R13: 0000000000000000 R14: 00007efe6447c790 R15: 0000000c80000000\n [3310.968212] ---[ end trace 1a346f4d3c0d96ba ]---\n [3310.968214] BTRFS: error (device sda) in cleanup_transaction:1946: errno=-11 unknown\n\nThe abort occurs because of a write hole while writing out freeing tree\nnodes of a tree-log tree. For zoned btrfs, we re-dirty a freed tree\nnode to ensure btrfs can write the region and does not leave a hole on\nwrite on a zoned device. The current code fails to re-dirty a node\nwhen the tree-log tree's depth is greater or equal to 2. That leads to\na transaction abort with -EAGAIN.\n\nFix the issue by properly re-dirtying a node on walking up the tree." |
| } |
| ], |
| "affected": [ |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "unaffected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "fs/btrfs/tree-log.c" |
| ], |
| "versions": [ |
| { |
| "version": "d3575156f6623eecf086a20bcf99a63f1598109c", |
| "lessThan": "477675049ca803aa95ff77468ffbddd966b415b0", |
| "status": "affected", |
| "versionType": "git" |
| }, |
| { |
| "version": "d3575156f6623eecf086a20bcf99a63f1598109c", |
| "lessThan": "84c25448929942edacba905cecc0474e91114e7a", |
| "status": "affected", |
| "versionType": "git" |
| } |
| ] |
| }, |
| { |
| "product": "Linux", |
| "vendor": "Linux", |
| "defaultStatus": "affected", |
| "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git", |
| "programFiles": [ |
| "fs/btrfs/tree-log.c" |
| ], |
| "versions": [ |
| { |
| "version": "5.12", |
| "status": "affected" |
| }, |
| { |
| "version": "0", |
| "lessThan": "5.12", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.15.8", |
| "lessThanOrEqual": "5.15.*", |
| "status": "unaffected", |
| "versionType": "semver" |
| }, |
| { |
| "version": "5.16", |
| "lessThanOrEqual": "*", |
| "status": "unaffected", |
| "versionType": "original_commit_for_fix" |
| } |
| ] |
| } |
| ], |
| "cpeApplicability": [ |
| { |
| "nodes": [ |
| { |
| "operator": "OR", |
| "negate": false, |
| "cpeMatch": [ |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.12", |
| "versionEndExcluding": "5.15.8" |
| }, |
| { |
| "vulnerable": true, |
| "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", |
| "versionStartIncluding": "5.12", |
| "versionEndExcluding": "5.16" |
| } |
| ] |
| } |
| ] |
| } |
| ], |
| "references": [ |
| { |
| "url": "https://git.kernel.org/stable/c/477675049ca803aa95ff77468ffbddd966b415b0" |
| }, |
| { |
| "url": "https://git.kernel.org/stable/c/84c25448929942edacba905cecc0474e91114e7a" |
| } |
| ], |
| "title": "btrfs: fix re-dirty process of tree-log nodes", |
| "x_generator": { |
| "engine": "bippy-1.2.0" |
| } |
| } |
| }, |
| "cveMetadata": { |
| "assignerOrgId": "f4215fc3-5b6b-47ff-a258-f7189bd81038", |
| "cveID": "CVE-2021-47510", |
| "requesterUserId": "gregkh@kernel.org", |
| "serial": "1", |
| "state": "PUBLISHED" |
| }, |
| "dataType": "CVE_RECORD", |
| "dataVersion": "5.0" |
| } |
