The branch main has been updated by fsu:

URL: 
https://cgit.FreeBSD.org/src/commit/?id=1484574843a3b49d5535ad1f7866295a0a5fb597

commit 1484574843a3b49d5535ad1f7866295a0a5fb597
Author:     Fedor Uporov <[email protected]>
AuthorDate: 2021-02-18 08:40:18 +0000
Commit:     Fedor Uporov <[email protected]>
CommitDate: 2021-05-07 07:08:20 +0000

    Fix inode birthtime updating logic.
    
    The birthtime field of struct vattr does not checked
    for VNOVAL in case of ext2_setattr() and produce incorrect
    inode birthtime values.
    
    Found using pjdfstest:
        pjdfstest/tests/utimensat/03.t
    
    Reviewed by:    pfg
    MFC after:      2 weeks
    Differential Revision:  https://reviews.freebsd.org/D29929
---
 sys/fs/ext2fs/ext2_vnops.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/sys/fs/ext2fs/ext2_vnops.c b/sys/fs/ext2fs/ext2_vnops.c
index e00dbc3e0adc..1ab360a7ad87 100644
--- a/sys/fs/ext2fs/ext2_vnops.c
+++ b/sys/fs/ext2fs/ext2_vnops.c
@@ -377,7 +377,7 @@ ext2_getattr(struct vop_getattr_args *ap)
        vap->va_mtime.tv_nsec = E2DI_HAS_XTIME(ip) ? ip->i_mtimensec : 0;
        vap->va_ctime.tv_sec = ip->i_ctime;
        vap->va_ctime.tv_nsec = E2DI_HAS_XTIME(ip) ? ip->i_ctimensec : 0;
-       if E2DI_HAS_XTIME(ip) {
+       if (E2DI_HAS_XTIME(ip)) {
                vap->va_birthtime.tv_sec = ip->i_birthtime;
                vap->va_birthtime.tv_nsec = ip->i_birthnsec;
        }
@@ -506,8 +506,10 @@ ext2_setattr(struct vop_setattr_args *ap)
                        ip->i_mtime = vap->va_mtime.tv_sec;
                        ip->i_mtimensec = vap->va_mtime.tv_nsec;
                }
-               ip->i_birthtime = vap->va_birthtime.tv_sec;
-               ip->i_birthnsec = vap->va_birthtime.tv_nsec;
+               if (E2DI_HAS_XTIME(ip) && vap->va_birthtime.tv_sec != VNOVAL) {
+                       ip->i_birthtime = vap->va_birthtime.tv_sec;
+                       ip->i_birthnsec = vap->va_birthtime.tv_nsec;
+               }
                error = ext2_update(vp, 0);
                if (error)
                        return (error);
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