Closed
Description
System information
| Type | Version/Name |
|---|---|
| Distribution Name | Gentoo |
| Distribution Version | |
| Linux Kernel | 5.4.97-gentoo-x86_64 |
| Architecture | amd64 |
| ZFS Version | 2.0.3-r0-gentoo (USE=debug) |
| SPL Version | 2.0.3-r0-gentoo |
Describe the problem you're observing
[15163.534474] VERIFY3(se->se_taskqid == TASKQID_INVALID) failed (29 == 0)
[15163.536053] PANIC at zfs_ctldir.c:374:zfsctl_snapshot_unmount_delay_impl()
[15163.536391] Showing stack for process 27720
[15163.536396] CPU: 6 PID: 27720 Comm: spl_delay_taskq Tainted: P O 5.4.97-gentoo-x86_64 #2
[15163.536397] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS ?-20190711_202441-buildvm-armv7-10.arm.fedoraproject.org-2.fc31 04/01/2014
[15163.536398] Call Trace:
[15163.536408] dump_stack+0x69/0x84
[15163.536416] spl_dumpstack+0x24/0x26 [spl]
[15163.536420] spl_panic+0xcf/0xf7 [spl]
[15163.536659] ? zfs_refcount_add+0x11/0x13 [zfs]
[15163.536700] ? zfsctl_snapshot_find_by_objsetid+0x8b/0xae [zfs]
[15163.536703] ? _raw_spin_lock+0x9/0xb
[15163.536752] ? zfs_refcount_remove+0x11/0x13 [zfs]
[15163.536791] ? zfsctl_snapshot_rele+0x19/0x4c [zfs]
[15163.536795] ? do_raw_spin_lock+0x2c/0x4e
[15163.536797] ? _raw_spin_lock+0x9/0xb
[15163.536841] ? zfs_refcount_remove_many+0x153/0x1d8 [zfs]
[15163.536880] zfsctl_snapshot_unmount_delay_impl+0x37/0x79 [zfs]
[15163.536919] snapentry_expire+0x72/0xe8 [zfs]
[15163.536923] taskq_thread+0x3fc/0x4ed [spl]
[15163.536928] ? wake_up_q+0x47/0x47
[15163.536933] ? taskq_create+0x40b/0x40b [spl]
[15163.536936] kthread+0xf4/0xf9
[15163.536939] ? kthread_unpark+0x4f/0x4f
[15163.536942] ret_from_fork+0x22/0x40
[15358.081184] INFO: task spl_delay_taskq:27720 blocked for more than 122 seconds.
[15358.081189] Tainted: P O 5.4.97-gentoo-x86_64 #2
[15358.081191] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[15358.081192] spl_delay_taskq D 0 27720 2 0x80004000
[15358.081198] Call Trace:
[15358.081208] __schedule+0x4f3/0x555
[15358.081214] schedule+0x71/0x8d
[15358.081221] spl_panic+0xf5/0xf7 [spl]
[15358.081277] ? zfs_refcount_add+0x11/0x13 [zfs]
[15358.081317] ? zfsctl_snapshot_find_by_objsetid+0x8b/0xae [zfs]
[15358.081320] ? _raw_spin_lock+0x9/0xb
[15358.081366] ? zfs_refcount_remove+0x11/0x13 [zfs]
[15358.081406] ? zfsctl_snapshot_rele+0x19/0x4c [zfs]
[15358.081410] ? do_raw_spin_lock+0x2c/0x4e
[15358.081412] ? _raw_spin_lock+0x9/0xb
[15358.081456] ? zfs_refcount_remove_many+0x153/0x1d8 [zfs]
[15358.081508] zfsctl_snapshot_unmount_delay_impl+0x37/0x79 [zfs]
[15358.081547] snapentry_expire+0x72/0xe8 [zfs]
[15358.081552] taskq_thread+0x3fc/0x4ed [spl]
[15358.081556] ? wake_up_q+0x47/0x47
[15358.081561] ? taskq_create+0x40b/0x40b [spl]
[15358.081565] kthread+0xf4/0xf9
[15358.081567] ? kthread_unpark+0x4f/0x4f
[15358.081569] ret_from_fork+0x22/0x40
Nothing really happens, just traces similar to those above pop up every now and then welp, while I was writing this a simple ls .zfs/snapshot started to hang indefinitely.
Describe how to reproduce the problem
- import degraded pool (v28, simple mirror, missing drive,
-o readonly=on) cd .zfs/snapshot; ls; cd whatevertar cf /somewhere-else . --acls --xattrs- leave directory, rinse, repeat