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2d8a2b51dc
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Chunwei Chen 2d8a2b51dc
Fix zpl_test_super race with zfs_umount 
We cannot call zpl_enter in zpl_test_super, because zpl_test_super is
under spinlock so we can't sleep, and also because zpl_test_super is
called without sb->s_umount taken, so it's possible we would race with
zfs_umount and call zpl_enter on freed zfsvfs.

Here's an stack trace when this happens:
[ 2379.114837] VERIFY(cvp->cv_magic == CV_MAGIC) failed
[ 2379.114845] PANIC at spl-condvar.c:497:__cv_broadcast()
[ 2379.114854] Kernel panic - not syncing: VERIFY(cvp->cv_magic == CV_MAGIC) failed
[ 2379.115012] Call Trace:
[ 2379.115019]  dump_stack+0x74/0x96
[ 2379.115024]  panic+0x114/0x2f6
[ 2379.115035]  spl_panic+0xcf/0xfc [spl]
[ 2379.115477]  __cv_broadcast+0x68/0xa0 [spl]
[ 2379.115585]  rrw_exit+0xb8/0x310 [zfs]
[ 2379.115696]  rrm_exit+0x4a/0x80 [zfs]
[ 2379.115808]  zpl_test_super+0xa9/0xd0 [zfs]
[ 2379.115920]  sget+0xd1/0x230
[ 2379.116033]  zpl_mount+0xdc/0x230 [zfs]
[ 2379.116037]  legacy_get_tree+0x28/0x50
[ 2379.116039]  vfs_get_tree+0x27/0xc0
[ 2379.116045]  path_mount+0x2fe/0xa70
[ 2379.116048]  do_mount+0x80/0xa0
[ 2379.116050]  __x64_sys_mount+0x8b/0xe0
[ 2379.116052]  do_syscall_64+0x35/0x50
[ 2379.116054]  entry_SYSCALL_64_after_hwframe+0x61/0xc6
[ 2379.116057] RIP: 0033:0x7f9912e8b26a

Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Chunwei Chen <david.chen@nutanix.com>
Closes #15077
2023-07-20 10:30:21 -07:00
.github Refine some details for the github actions update 2023-03-16 10:00:14 -07:00
cmd Do not report bytes skipped by scan as issued. 2023-06-30 08:47:13 -07:00
config Linux 6.5 compat: disk_check_media_change() was added 2023-07-20 09:09:25 -07:00
contrib Rollback before zfs root is mounted 2023-07-20 09:55:22 -07:00
etc Revert "systemd: Use non-absolute paths in Exec* lines" 2023-06-07 11:14:05 -07:00
include spa_min_alloc should be GCD, not min 2023-07-20 10:23:52 -07:00
lib Fix remount when setting multiple properties. 2023-06-30 08:36:43 -07:00
man Pack our DDT ZAPs a bit denser. 2023-06-30 09:42:02 -07:00
module Fix zpl_test_super race with zfs_umount 2023-07-20 10:30:21 -07:00
rpm rpm: Use libtirpc-devel and /usr/lib on SUSE 2023-02-09 11:57:50 -08:00
scripts Fix kmodtool for packaging mainline Linux 2023-03-22 09:22:52 -07:00
tests Ignore pool ashift property during vdev attachment 2023-07-20 09:57:16 -07:00
udev Replace dead opensolaris.org license link 2022-07-11 14:16:13 -07:00
.editorconfig Add an .editorconfig; document git whitespace settings 2020-01-27 13:32:52 -08:00
.gitignore autoconf: use include directives instead of recursing down cmd 2022-05-10 10:18:38 -07:00
.gitmodules .gitmodules: link to openzfs github repository 2021-04-12 09:37:23 -07:00
AUTHORS zfs_rename: support RENAME_* flags 2022-10-28 09:49:20 -07:00
autogen.sh Ubuntu 22.04 integration: ShellCheck 2022-11-18 11:24:48 -08:00
CODE_OF_CONDUCT.md Documentation corrections 2022-12-22 11:34:28 -08:00
configure.ac Add native-deb* targets to build native Debian packages 2022-12-13 17:33:05 -08:00
copy-builtin copy-builtin: add hooks with sed/>> 2022-05-10 10:17:43 -07:00
COPYRIGHT Fix typos 2020-06-09 21:24:09 -07:00
LICENSE Update build system and packaging 2018-05-29 16:00:33 -07:00
Makefile.am Process script directory for all configs 2022-10-27 16:45:14 -07:00
META Update META 2023-06-30 13:32:18 -07:00
NEWS Fix NEWS file 2020-08-26 21:44:41 -07:00
NOTICE Update build system and packaging 2018-05-29 16:00:33 -07:00
README.md README: Update OpenZFS website url 2022-01-06 16:25:01 -08:00
RELEASES.md Add RELEASES.md file 2021-04-02 16:33:40 -07:00
TEST Remove CI builder customization from TEST 2020-03-16 10:46:03 -07:00
zfs.release.in Move zfs.release generation to configure step 2012-07-12 12:22:51 -07:00

README.md

img

OpenZFS is an advanced file system and volume manager which was originally developed for Solaris and is now maintained by the OpenZFS community. This repository contains the code for running OpenZFS on Linux and FreeBSD.

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Official Resources

Installation

Full documentation for installing OpenZFS on your favorite operating system can be found at the Getting Started Page.

Contribute & Develop

We have a separate document with contribution guidelines.

We have a Code of Conduct.

Release

OpenZFS is released under a CDDL license. For more details see the NOTICE, LICENSE and COPYRIGHT files; UCRL-CODE-235197

Supported Kernels

  • The META file contains the officially recognized supported Linux kernel versions.
  • Supported FreeBSD versions are any supported branches and releases starting from 12.2-RELEASE.