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bee314a798
At shutdown time, we drain all of the zevents and set the ZEVENT_SHUTDOWN flag. On FreeBSD, we may end up calling zfs_zevent_destroy() after the zevent_lock has been destroyed while the sysevent thread is winding down; we observe ESHUTDOWN, then back out. Events have already been drained, so just inline the kmem_free call in sysevent_worker() to avoid the race, and document the assumption that zfs_zevent_destroy doesn't do anything else useful at that point. This fixes a panic that can occur at module unload time. Reviewed-by: Ryan Moeller <freqlabs@FreeBSD.org> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Signed-off-by: Kyle Evans <kevans@FreeBSD.org> Closes #13220 |
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| .. | ||
| acl_common.c | ||
| callb.c | ||
| list.c | ||
| sha224.h | ||
| sha256.h | ||
| sha256c.c | ||
| sha384.h | ||
| sha512.h | ||
| sha512c.c | ||
| sha512t.h | ||
| spl_acl.c | ||
| spl_atomic.c | ||
| spl_cmn_err.c | ||
| spl_dtrace.c | ||
| spl_kmem.c | ||
| spl_kstat.c | ||
| spl_misc.c | ||
| spl_policy.c | ||
| spl_procfs_list.c | ||
| spl_string.c | ||
| spl_sunddi.c | ||
| spl_sysevent.c | ||
| spl_taskq.c | ||
| spl_uio.c | ||
| spl_vfs.c | ||
| spl_vm.c | ||
| spl_zlib.c | ||
| spl_zone.c | ||