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f83a7864aa
Without this patch, the following crash can occur when
a file system is configured with "xattr=dir".
VNASSERT failed: locked not true at
/posix-acl/freebsd-rdma/sys/kern/vfs_subr.c:5786 (assert_vop_locked)
hold count flags ()
flags ()
lock type zfs: UNLOCKED
panic: zfs_dirent_lookup: vnode is not locked but should be
cpuid = 3
time = 1770520763
KDB: stack backtrace:
db_trace_self_wrapper() at db_trace_self_wrapper+0x2b
vpanic() at vpanic+0x136/frame 0xfffffe00914c8270
panic() at panic+0x43/frame 0xfffffe00914c82d0
assert_vop_locked() at assert_vop_locked+0x78
zfs_dirent_lookup() at zfs_dirent_lookup+0x41
zfs_setattr_dir() at zfs_setattr_dir+0x123
zfs_setattr() at zfs_setattr+0x1389
zfs_freebsd_setattr() at zfs_freebsd_setattr+0x56b
VOP_SETATTR_APV() at VOP_SETATTR_APV+0x5d
setfown() at setfown+0xb1
kern_fchownat() at kern_fchownat+0x192
This patch fixes the problem by moving the vput() call for
attrzp to after the zfs_setattr_dir() call that takes it as
an argument.
Reviewed-by: Alexander Motin <alexander.motin@TrueNAS.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Rick Macklem <rmacklem@uoguelph.ca>
Closes: #18188
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