btrfs: fix hang during unmount when stopping a space reclaim… (CVE-2022-48664)

Résumé

btrfs: fix hang during unmount when stopping a space reclaim worker

Description d'origine

La description telle que publiée par la source (souvent en anglais).

In the Linux kernel, the following vulnerability has been resolved:

btrfs: fix hang during unmount when stopping a space reclaim worker

Often when running generic/562 from fstests we can hang during unmount,
resulting in a trace like this:

Sep 07 11:52:00 debian9 unknown: run fstests generic/562 at 2022-09-07 11:52:00
Sep 07 11:55:32 debian9 kernel: INFO: task umount:49438 blocked for more than 120 seconds.
Sep 07 11:55:32 debian9 kernel: Not tainted 6.0.0-rc2-btrfs-next-122 #1
Sep 07 11:55:32 debian9 kernel: "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
Sep 07 11:55:32 debian9 kernel: task:umount state:D stack: 0 pid:49438 ppid: 25683 flags:0x00004000
Sep 07 11:55:32 debian9 kernel: Call Trace:
Sep 07 11:55:32 debian9 kernel:
Sep 07 11:55:32 debian9 kernel: __schedule+0x3c8/0xec0
Sep 07 11:55:32 debian9 kernel: ? rcu_read_lock_sched_held+0x12/0x70
Sep 07 11:55:32 debian9 kernel: schedule+0x5d/0xf0
Sep 07 11:55:32 debian9 kernel: schedule_timeout+0xf1/0x130
Sep 07 11:55:32 debian9 kernel: ? lock_release+0x224/0x4a0
Sep 07 11:55:32 debian9 kernel: ? lock_acquired+0x1a0/0x420
Sep 07 11:55:32 debian9 kernel: ? trace_hardirqs_on+0x2c/0xd0
Sep 07 11:55:32 debian9 kernel: __wait_for_common+0xac/0x200
Sep 07 11:55:32 debian9 kernel: ? usleep_range_state+0xb0/0xb0
Sep 07 11:55:32 debian9 kernel: __flush_work+0x26d/0x530
Sep 07 11:55:32 debian9 kernel: ? flush_workqueue_prep_pwqs+0x140/0x…

Source: OSV.dev (Open Source Vulnerabilities) NVD OSV

Paquets affectés

Linux Kernel

[{"type":"ECOSYSTEM","events":[{"introduced":"4.20.0"},{"fixed":"5.10.147"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.71"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"5.19.12"}]}]

État des correctifs par distribution

Paquets corrigés publiés par chaque distribution pour cette CVE

Debian DEBIAN-CVE-2022-48664 linux Corrigé dans: 5.10.148-1
Ubuntu UBUNTU-CVE-2022-48664 linux-azure

Résumé

Description d'origine

Paquets affectés

État des correctifs par distribution

Références