Messages in this thread Patch in this message | | | Date | Sun, 05 Nov 2023 16:20:42 -0800 | Subject | Re: [syzbot] [PATCH] null pointer dereference | From | syzbot <> |
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Subject: [PATCH] null pointer dereference Author: yuran.pereira@hotmail.com
#syz test: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
Signed-off-by: Yuran Pereira <yuran.pereira@hotmail.com> --- drivers/ptp/ptp_chardev.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/ptp/ptp_chardev.c b/drivers/ptp/ptp_chardev.c index 282cd7d24077..5b36c34629a0 100644 --- a/drivers/ptp/ptp_chardev.c +++ b/drivers/ptp/ptp_chardev.c @@ -173,6 +173,8 @@ long ptp_ioctl(struct posix_clock_context *pccontext, unsigned int cmd, int enable, err = 0; tsevq = pccontext->private_clkdata; + if (!tsevq) + return -EINVAL; switch (cmd) { -- 2.25.1
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