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gve: Implement gettimex64 with -EOPNOTSUPP

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gve implemented a ptp_clock for sole use of do_aux_work at this time.
ptp_clock_gettime() and ptp_sys_offset() assume every ptp_clock has
implemented either gettimex64 or gettime64. Stub gettimex64 and return
-EOPNOTSUPP to prevent NULL dereferencing.

Fixes: acd1638052 ("gve: Add initial PTP device support")
Reported-by: syzbot+c8c0e7ccabd456541612@syzkaller.appspotmail.com
Closes: https://syzkaller.appspot.com/bug?extid=c8c0e7ccabd456541612
Signed-off-by: Tim Hostetler <thostet@google.com>
Reviewed-by: Harshitha Ramamurthy <hramamurthy@google.com>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Signed-off-by: Joshua Washington <joshwash@google.com>
Link: https://patch.msgid.link/20251029184555.3852952-2-joshwash@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Tim Hostetler 2025-10-29 11:45:39 -07:00 committed by Jakub Kicinski
parent 284987ab6c
commit 6ab753b5d8
1 changed files with 8 additions and 0 deletions
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8
drivers/net/ethernet/google/gve/gve_ptp.c
View File

@ -26,6 +26,13 @@ int gve_clock_nic_ts_read(struct gve_priv *priv)
return 0;
}
static int gve_ptp_gettimex64(struct ptp_clock_info *info,
struct timespec64 *ts,
struct ptp_system_timestamp *sts)
{
return -EOPNOTSUPP;
}
static long gve_ptp_do_aux_work(struct ptp_clock_info *info)
{
const struct gve_ptp *ptp = container_of(info, struct gve_ptp, info);
@ -47,6 +54,7 @@ static long gve_ptp_do_aux_work(struct ptp_clock_info *info)
static const struct ptp_clock_info gve_ptp_caps = {
.owner = THIS_MODULE,
.name = "gve clock",
.gettimex64 = gve_ptp_gettimex64,
.do_aux_work = gve_ptp_do_aux_work,
};