https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=254440
Bug ID: 254440
Summary: FreeBSD 13.0-BETA kldload zfs spins on VMWare
Product: Base System
Version: 13.0-STABLE
Hardware: i386
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: b...@freebsd.org
Reporter: o...@j.email.ne.jp
After upgrading 12.2-RELEASE to 13.0-BETA, 'kldload zfs' spins and doesn't come
back.
This only happens with VWare and doesn't with 2~3 other hardwares.
Another note is another 13.0-BETA version which has been following since
current-13 doesn't hung same way; only upgrade from 12.2-RELEASE among my
environment.
I don't have ZFS boot.
I also don't set zfs_enable as I often connect USB disk and mount zfs file
systems.
vmare# procstat -kk 1049
PID TID COMM TDNAME KSTACK
1049 100215 kldload - spa_init+0xc6
zfs_kmod_init+0x1a
zfs_modevent+0x34 module_register_init+0x8c linker_load_module+0xaab
kern_kldload+0xc1
sys_kldload+0x50 syscall+0x17d g_ctx+0xe280bf29
vmware# kgdb101 /usr/usr/lib/debug/boot/kernel/zfs.ko.debug
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Reading symbols from zfs.ko.debug...
(kgdb) info line *spa_init+0xc6
Line 2345 of "/usr/src/sys/contrib/openzfs/module/zfs/spa_misc.c"
starts at address 0x2b0461 <spa_init+193>
and ends at 0x2b0467 <spa_init+199>.
(kgdb)
void
spa_init(spa_mode_t mode)
{
mutex_init(&spa_namespace_lock, NULL, MUTEX_DEFAULT, NULL);
mutex_init(&spa_spare_lock, NULL, MUTEX_DEFAULT, NULL); // <- line 2345
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