struct timeval on 32-bit systems will have its tv_sec value overflow in year 2038 and beyond. Use a 64 bit value to print time of the coredump in seconds. ktime_get_real_seconds is chosen here for efficiency reasons.

Suggested by: Arnd Bergmann arnd@arndb.de Signed-off-by: Tina Ruchandani ruchandani.tina@gmail.com Signed-off-by: Arnd Bergmann arnd@arndb.de --- I've had this patch in my queue for a while, and would like for someone to pick it up into mainline.

Andrew Morton seems to be the one who has handled most of the coredump.c patches. Andrew, can you take this for 4.5?

My tree is part of linux-next, so I assume I have to drop it before you can take it into -mm?

Alternatively, Al could take it for his vfs tree, or Thomas or John for the timekeeping branch in tip.

diff --git a/fs/coredump.c b/fs/coredump.c index 1777331eee76..b3c153ca435d 100644 --- a/fs/coredump.c +++ b/fs/coredump.c @@ -32,6 +32,7 @@ #include <linux/pipe_fs_i.h> #include <linux/oom.h> #include <linux/compat.h> +#include <linux/timekeeping.h>

#include <asm/uaccess.h> #include <asm/mmu_context.h> @@ -232,9 +233,10 @@ static int format_corename(struct core_name *cn, struct coredump_params *cprm) break; /* UNIX time of coredump */ case 't': { - struct timeval tv; - do_gettimeofday(&tv); - err = cn_printf(cn, "%lu", tv.tv_sec); + time64_t time; + + time = ktime_get_real_seconds(); + err = cn_printf(cn, "%lld", time); break; } /* hostname */