Y2038

y2038@lists.linaro.org

1132 discussions

[PATCH v2] scsi: bfa: Use ktime_get_real_seconds()

by Amitoj Kaur Chawla

32 bit systems using 'struct timeval' will break in the year 2038, so we modify the code appropriately. This patch replaces the use of struct timeval and do_gettimeofday() with ktime_get_real_seconds() which returns a 64 bit value which is safer than struct timeval. This patch also replaces u32 time storing variables with u64 variables to store the 64 bit seconds value returned by ktime_get_real_seconds() Signed-off-by: Amitoj Kaur Chawla <amitoj1606(a)gmail.com> --- Changes in v2: -Converted u32 type to u64 type drivers/scsi/bfa/bfa_fcpim.c | 2 +- drivers/scsi/bfa/bfa_fcpim.h | 4 ++-- drivers/scsi/bfa/bfad_bsg.c | 6 +++--- 3 files changed, 6 insertions(+), 6 deletions(-) diff --git a/drivers/scsi/bfa/bfa_fcpim.c b/drivers/scsi/bfa/bfa_fcpim.c index d7385d1..224db4e 100644 --- a/drivers/scsi/bfa/bfa_fcpim.c +++ b/drivers/scsi/bfa/bfa_fcpim.c @@ -468,7 +468,7 @@ bfa_ioim_profile_start(struct bfa_ioim_s *ioim) } bfa_status_t -bfa_fcpim_profile_on(struct bfa_s *bfa, u32 time) +bfa_fcpim_profile_on(struct bfa_s *bfa, u64 time) { struct bfa_itnim_s *itnim; struct bfa_fcpim_s *fcpim = BFA_FCPIM(bfa); diff --git a/drivers/scsi/bfa/bfa_fcpim.h b/drivers/scsi/bfa/bfa_fcpim.h index e693af6..274e3af 100644 --- a/drivers/scsi/bfa/bfa_fcpim.h +++ b/drivers/scsi/bfa/bfa_fcpim.h @@ -135,7 +135,7 @@ struct bfa_fcpim_s { struct bfa_fcpim_del_itn_stats_s del_itn_stats; bfa_boolean_t ioredirect; bfa_boolean_t io_profile; - u32 io_profile_start_time; + u64 io_profile_start_time; bfa_fcpim_profile_t profile_comp; bfa_fcpim_profile_t profile_start; }; @@ -309,7 +309,7 @@ bfa_status_t bfa_fcpim_port_iostats(struct bfa_s *bfa, struct bfa_itnim_iostats_s *stats, u8 lp_tag); void bfa_fcpim_add_stats(struct bfa_itnim_iostats_s *fcpim_stats, struct bfa_itnim_iostats_s *itnim_stats); -bfa_status_t bfa_fcpim_profile_on(struct bfa_s *bfa, u32 time); +bfa_status_t bfa_fcpim_profile_on(struct bfa_s *bfa, u64 time); bfa_status_t bfa_fcpim_profile_off(struct bfa_s *bfa); #define bfa_fcpim_ioredirect_enabled(__bfa) \ diff --git a/drivers/scsi/bfa/bfad_bsg.c b/drivers/scsi/bfa/bfad_bsg.c index 023b9d4..92f5b0f 100644 --- a/drivers/scsi/bfa/bfad_bsg.c +++ b/drivers/scsi/bfa/bfad_bsg.c @@ -15,6 +15,7 @@ * General Public License for more details. */ +#include <linux/ktime.h> #include <linux/uaccess.h> #include "bfad_drv.h" #include "bfad_im.h" @@ -2093,13 +2094,12 @@ bfad_iocmd_fcpim_cfg_profile(struct bfad_s *bfad, void *cmd, unsigned int v_cmd) { struct bfa_bsg_fcpim_profile_s *iocmd = (struct bfa_bsg_fcpim_profile_s *)cmd; - struct timeval tv; unsigned long flags; - do_gettimeofday(&tv); spin_lock_irqsave(&bfad->bfad_lock, flags); if (v_cmd == IOCMD_FCPIM_PROFILE_ON) - iocmd->status = bfa_fcpim_profile_on(&bfad->bfa, tv.tv_sec); + iocmd->status = bfa_fcpim_profile_on(&bfad->bfa, + ktime_get_real_seconds()); else if (v_cmd == IOCMD_FCPIM_PROFILE_OFF) iocmd->status = bfa_fcpim_profile_off(&bfad->bfa); spin_unlock_irqrestore(&bfad->bfad_lock, flags); -- 1.9.1

9 years, 5 months

[PATCH v3 1/2] scsi: bfa: bfa_svc: Use ktime_get_real_seconds()

by Amitoj Kaur Chawla

32 bit systems using 'struct timeval' will break in the year 2038, so we modify the code appropriately. This patch removes the function bfa_get_log_time() which is only used to get current time in seconds. bfa_get_log_time() is replaced with ktime_get_real_seconds() which returns a 64 bit value. Signed-off-by: Amitoj Kaur Chawla <amitoj1606(a)gmail.com> --- Changes in v2: -None Changes in v3: -None drivers/scsi/bfa/bfa_svc.c | 21 +++++---------------- 1 file changed, 5 insertions(+), 16 deletions(-) diff --git a/drivers/scsi/bfa/bfa_svc.c b/drivers/scsi/bfa/bfa_svc.c index 625225f..b3668e9 100644 --- a/drivers/scsi/bfa/bfa_svc.c +++ b/drivers/scsi/bfa/bfa_svc.c @@ -15,6 +15,7 @@ * General Public License for more details. */ +#include <linux/ktime.h> #include "bfad_drv.h" #include "bfad_im.h" #include "bfa_plog.h" @@ -303,18 +304,6 @@ plkd_validate_logrec(struct bfa_plog_rec_s *pl_rec) return 0; } -static u64 -bfa_get_log_time(void) -{ - u64 system_time = 0; - struct timeval tv; - do_gettimeofday(&tv); - - /* We are interested in seconds only. */ - system_time = tv.tv_sec; - return system_time; -} - static void bfa_plog_add(struct bfa_plog_s *plog, struct bfa_plog_rec_s *pl_rec) { @@ -335,7 +324,7 @@ bfa_plog_add(struct bfa_plog_s *plog, struct bfa_plog_rec_s *pl_rec) memcpy(pl_recp, pl_rec, sizeof(struct bfa_plog_rec_s)); - pl_recp->tv = bfa_get_log_time(); + pl_recp->tv = ktime_get_real_seconds(); BFA_PL_LOG_REC_INCR(plog->tail); if (plog->head == plog->tail) @@ -6278,7 +6267,7 @@ bfa_fcdiag_lb_is_running(struct bfa_s *bfa) * D-port */ #define bfa_dport_result_start(__dport, __mode) do { \ - (__dport)->result.start_time = bfa_get_log_time(); \ + (__dport)->result.start_time = ktime_get_real_seconds();\ (__dport)->result.status = DPORT_TEST_ST_INPRG; \ (__dport)->result.mode = (__mode); \ (__dport)->result.rp_pwwn = (__dport)->rp_pwwn; \ @@ -6717,7 +6706,7 @@ bfa_dport_scn(struct bfa_dport_s *dport, struct bfi_diag_dport_scn_s *msg) switch (dport->i2hmsg.scn.state) { case BFI_DPORT_SCN_TESTCOMP: - dport->result.end_time = bfa_get_log_time(); + dport->result.end_time = ktime_get_real_seconds(); bfa_trc(dport->bfa, dport->result.end_time); dport->result.status = msg->info.testcomp.status; @@ -6764,7 +6753,7 @@ bfa_dport_scn(struct bfa_dport_s *dport, struct bfi_diag_dport_scn_s *msg) case BFI_DPORT_SCN_SUBTESTSTART: subtesttype = msg->info.teststart.type; dport->result.subtest[subtesttype].start_time = - bfa_get_log_time(); + ktime_get_real_seconds(); dport->result.subtest[subtesttype].status = DPORT_TEST_ST_INPRG; -- 1.9.1

9 years, 5 months

[PATCH 0/3] fix y2038 problem in input_event

by WEN Pingbo

Before this, I have discussed this problem with Arnd. And Arnd have an idea that by converting timeval to long / long in input_event, so that input_event structure size will be unchanged, and timeval structure will removed entirely. But we also need to avoid using CLOCK_REALTIME in userland, to keep the new input_event structure y2038 safe. The input_event will only support monotonic time in Arnd's idea. And we still need to add wall time support for old 32-bit binary. Those patches try to keep original input capacity, and resolve y2038 problem in input_event radically. struct input_event is only used between kernel and userspace communication (except uinput). So that we can replace input_event with input_event64 in kernel entirely, and add a conversion in input_event_from/to_user() to keep compatible with old 32-bits binary. userland can switch to input_event64, which is y2038 safe, via ioctl. WEN Pingbo (3): evdev: convert input_event to input_event64 evdev: add new ioctl EVIOCSEVENT / EVIOCGEVENT uinput: convert input_event to input_event64 drivers/input/evdev.c | 38 ++++++++++++------- drivers/input/input-compat.c | 88 +++++++++++++++++++++++++++++++++++++------- drivers/input/input-compat.h | 9 +++-- drivers/input/misc/uinput.c | 17 ++++++--- include/linux/uinput.h | 2 +- include/uapi/linux/input.h | 18 +++++++++ 6 files changed, 134 insertions(+), 38 deletions(-) -- 1.9.1

9 years, 5 months

[PATCH] scsi: replace struct timeval with ktime_get_real_seconds()

by Alison Schofield

Replace the use of struct timeval and do_gettimeofday() with 64 bit ktime_get_real_seconds. Prevents 32-bit type overflow in year 2038 on 32-bit systems. Signed-off-by: Alison Schofield <amsfield22(a)gmail.com> --- drivers/scsi/pmcraid.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/pmcraid.c b/drivers/scsi/pmcraid.c index ed31d8c..3f64275 100644 --- a/drivers/scsi/pmcraid.c +++ b/drivers/scsi/pmcraid.c @@ -45,6 +45,7 @@ #include <asm/processor.h> #include <linux/libata.h> #include <linux/mutex.h> +#include <linux/ktime.h> #include <scsi/scsi.h> #include <scsi/scsi_host.h> #include <scsi/scsi_device.h> @@ -5563,11 +5564,9 @@ static void pmcraid_set_timestamp(struct pmcraid_cmd *cmd) __be32 time_stamp_len = cpu_to_be32(PMCRAID_TIMESTAMP_LEN); struct pmcraid_ioadl_desc *ioadl = ioarcb->add_data.u.ioadl; - struct timeval tv; __le64 timestamp; - do_gettimeofday(&tv); - timestamp = tv.tv_sec * 1000; + timestamp = ktime_get_real_seconds() * 1000; pinstance->timestamp_data->timestamp[0] = (__u8)(timestamp); pinstance->timestamp_data->timestamp[1] = (__u8)((timestamp) >> 8); -- 2.1.4

9 years, 5 months

You have 1 new fax, document 0000852481

by Interfax Online

You have received a new fax. Scanned fax document is attached to this email. Scanned by: Daniel Chamberlain Document name: scan_0000852481.doc Date: Thu, 5 Nov 2015 03:19:32 +0300 Scan quality: 500 DPI File size: 144 Kb Pages sent: 3 Scanned in: 47 seconds Thanks for using Interfax service!

9 years, 5 months

[RESEND PATCH] USB: usbmon: Use 64bit timestamp for mon_bin_hdr

by Tina Ruchandani

struct mon_bin_hdr allows for a 64-bit seconds timestamp. The code currently uses 'struct timeval' to populate the timestamp in mon_bin_hdr, which has a 32-bit seconds field and will overflow in year 2038 and beyond. This patch replaces 'struct timeval' with 'struct timespec64' which is y2038 safe. This patch is part of a larger attempt to remove instances of struct timeval and other 32-bit timekeeping (time_t, struct timespec) from the kernel. Signed-off-by: Tina Ruchandani <ruchandani.tina(a)gmail.com> --- drivers/usb/mon/mon_bin.c | 17 +++++++++-------- 1 file changed, 9 insertions(+), 8 deletions(-) diff --git a/drivers/usb/mon/mon_bin.c b/drivers/usb/mon/mon_bin.c index 3598f1a..1a874a1 100644 --- a/drivers/usb/mon/mon_bin.c +++ b/drivers/usb/mon/mon_bin.c @@ -18,6 +18,7 @@ #include <linux/mm.h> #include <linux/scatterlist.h> #include <linux/slab.h> +#include <linux/time64.h> #include <asm/uaccess.h> @@ -92,8 +93,8 @@ struct mon_bin_hdr { unsigned short busnum; /* Bus number */ char flag_setup; char flag_data; - s64 ts_sec; /* gettimeofday */ - s32 ts_usec; /* gettimeofday */ + s64 ts_sec; /* getnstimeofday64 */ + s32 ts_usec; /* getnstimeofday64 */ int status; unsigned int len_urb; /* Length of data (submitted or actual) */ unsigned int len_cap; /* Delivered length */ @@ -483,7 +484,7 @@ static void mon_bin_event(struct mon_reader_bin *rp, struct urb *urb, char ev_type, int status) { const struct usb_endpoint_descriptor *epd = &urb->ep->desc; - struct timeval ts; + struct timespec64 ts; unsigned long flags; unsigned int urb_length; unsigned int offset; @@ -494,7 +495,7 @@ static void mon_bin_event(struct mon_reader_bin *rp, struct urb *urb, struct mon_bin_hdr *ep; char data_tag = 0; - do_gettimeofday(&ts); + getnstimeofday64(&ts); spin_lock_irqsave(&rp->b_lock, flags); @@ -568,7 +569,7 @@ static void mon_bin_event(struct mon_reader_bin *rp, struct urb *urb, ep->busnum = urb->dev->bus->busnum; ep->id = (unsigned long) urb; ep->ts_sec = ts.tv_sec; - ep->ts_usec = ts.tv_usec; + ep->ts_usec = ts.tv_nsec / NSEC_PER_USEC; ep->status = status; ep->len_urb = urb_length; ep->len_cap = length + lendesc; @@ -629,12 +630,12 @@ static void mon_bin_complete(void *data, struct urb *urb, int status) static void mon_bin_error(void *data, struct urb *urb, int error) { struct mon_reader_bin *rp = data; - struct timeval ts; + struct timespec64 ts; unsigned long flags; unsigned int offset; struct mon_bin_hdr *ep; - do_gettimeofday(&ts); + getnstimeofday64(&ts); spin_lock_irqsave(&rp->b_lock, flags); @@ -656,7 +657,7 @@ static void mon_bin_error(void *data, struct urb *urb, int error) ep->busnum = urb->dev->bus->busnum; ep->id = (unsigned long) urb; ep->ts_sec = ts.tv_sec; - ep->ts_usec = ts.tv_usec; + ep->ts_usec = ts.tv_nsec / NSEC_PER_USEC; ep->status = error; ep->flag_setup = '-'; -- 2.6.0.rc2.230.g3dd15c0

9 years, 5 months

[RESEND PATCH] qla2xxx: Remove use of 'struct timeval'

by Tina Ruchandani

struct register_host_info stores a 64-bit UTC system time timestamp. This patch removes the use of 'struct timeval' to obtain that timestamp as its tv_sec value will overflow on 32-bit systems in year 2038 beyond. The patch uses ktime_get_real_seconds() which returns a 64-bit seconds value. Signed-off-by: Tina Ruchandani <ruchandani.tina(a)gmail.com> --- drivers/scsi/qla2xxx/qla_mr.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/scsi/qla2xxx/qla_mr.c b/drivers/scsi/qla2xxx/qla_mr.c index 6d190b4..d64a64a 100644 --- a/drivers/scsi/qla2xxx/qla_mr.c +++ b/drivers/scsi/qla2xxx/qla_mr.c @@ -6,6 +6,7 @@ */ #include "qla_def.h" #include <linux/delay.h> +#include <linux/ktime.h> #include <linux/pci.h> #include <linux/ratelimit.h> #include <linux/vmalloc.h> @@ -1812,7 +1813,6 @@ qlafx00_fx_disc(scsi_qla_host_t *vha, fc_port_t *fcport, uint16_t fx_type) struct host_system_info *phost_info; struct register_host_info *preg_hsi; struct new_utsname *p_sysid = NULL; - struct timeval tv; sp = qla2x00_get_sp(vha, fcport, GFP_KERNEL); if (!sp) @@ -1886,8 +1886,7 @@ qlafx00_fx_disc(scsi_qla_host_t *vha, fc_port_t *fcport, uint16_t fx_type) p_sysid->domainname, DOMNAME_LENGTH); strncpy(phost_info->hostdriver, QLA2XXX_VERSION, VERSION_LENGTH); - do_gettimeofday(&tv); - preg_hsi->utc = (uint64_t)tv.tv_sec; + preg_hsi->utc = (uint64_t)ktime_get_real_seconds(); ql_dbg(ql_dbg_init, vha, 0x0149, "ISP%04X: Host registration with firmware\n", ha->pdev->device); -- 2.2.0.rc0.207.ga3a616c

9 years, 5 months

[PATCH] AFS: Correctly use 64-bit time for UUID

by Tina Ruchandani

UUID calculation uses 'struct timespec' whose seconds will overflow in year 2038 and beyond for 32-bit systems. This patch removes the dependency on 'struct timespec' by using ktime_get_real(). While the patch does not fix a 'bug' as such, it is part of a larger effort to remove instances of 'struct timespec' and other data-structures suffering from y2038 problem from the kernel. Suggested-by: Arnd Bergmann <arnd(a)arndb.de> Signed-off-by: Tina Ruchandani <ruchandani.tina(a)gmail.com> --- Changes in v2: - Use 64-bit division API, fix 32-bit build --- fs/afs/main.c | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-) diff --git a/fs/afs/main.c b/fs/afs/main.c index 35de0c0..129ff43 100644 --- a/fs/afs/main.c +++ b/fs/afs/main.c @@ -14,6 +14,7 @@ #include <linux/init.h> #include <linux/completion.h> #include <linux/sched.h> +#include <linux/ktime.h> #include "internal.h" MODULE_DESCRIPTION("AFS Client File System"); @@ -37,7 +38,6 @@ struct workqueue_struct *afs_wq; */ static int __init afs_get_client_UUID(void) { - struct timespec ts; u64 uuidtime; u16 clockseq; int ret; @@ -48,9 +48,7 @@ static int __init afs_get_client_UUID(void) if (ret < 0) return ret; - getnstimeofday(&ts); - uuidtime = (u64) ts.tv_sec * 1000 * 1000 * 10; - uuidtime += ts.tv_nsec / 100; + uuidtime = ktime_divns(ktime_get_real(), 100); uuidtime += AFS_UUID_TO_UNIX_TIME; afs_uuid.time_low = uuidtime; afs_uuid.time_mid = uuidtime >> 32; -- 1.9.1

9 years, 5 months

[RESEND PATCH v3] scsi: stex: Remove use of struct timeval

by Tina Ruchandani

Function stex_gettime uses 'struct timeval' whose tv_sec value will overflow on 32-bit systems in year 2038 and beyond. This patch replaces the use of struct timeval and do_gettimeofday with ktime_get_real_seconds, which returns a 64-bit seconds value. Suggested-by: Arnd Bergmann <arnd(a)arndb.de> Signed-off-by: Tina Ruchandani <ruchandani.tina(a)gmail.com> -- Changes in v3: - Remove stex_gettime altogether, directly assign the timestamp. Changes in v2: - Change subject line to indicate that the patch is restricted to stex driver. --- --- drivers/scsi/stex.c | 13 +++---------- 1 file changed, 3 insertions(+), 10 deletions(-) diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c index 98a62bc..84e196e 100644 --- a/drivers/scsi/stex.c +++ b/drivers/scsi/stex.c @@ -25,6 +25,7 @@ #include <linux/types.h> #include <linux/module.h> #include <linux/spinlock.h> +#include <linux/ktime.h> #include <asm/io.h> #include <asm/irq.h> #include <asm/byteorder.h> @@ -362,14 +363,6 @@ MODULE_DESCRIPTION("Promise Technology SuperTrak EX Controllers"); MODULE_LICENSE("GPL"); MODULE_VERSION(ST_DRIVER_VERSION); -static void stex_gettime(__le64 *time) -{ - struct timeval tv; - - do_gettimeofday(&tv); - *time = cpu_to_le64(tv.tv_sec); -} - static struct status_msg *stex_get_status(struct st_hba *hba) { struct status_msg *status = hba->status_buffer + hba->status_tail; @@ -1002,7 +995,7 @@ static int stex_common_handshake(struct st_hba *hba) h->req_cnt = cpu_to_le16(hba->rq_count+1); h->status_sz = cpu_to_le16(sizeof(struct status_msg)); h->status_cnt = cpu_to_le16(hba->sts_count+1); - stex_gettime(&h->hosttime); + h->hosttime = cpu_to_le64(ktime_get_real_seconds()); h->partner_type = HMU_PARTNER_TYPE; if (hba->extra_offset) { h->extra_offset = cpu_to_le32(hba->extra_offset); @@ -1076,7 +1069,7 @@ static int stex_ss_handshake(struct st_hba *hba) h->req_cnt = cpu_to_le16(hba->rq_count+1); h->status_sz = cpu_to_le16(sizeof(struct status_msg)); h->status_cnt = cpu_to_le16(hba->sts_count+1); - stex_gettime(&h->hosttime); + h->hosttime = cpu_to_le64(ktime_get_real_seconds()); h->partner_type = HMU_PARTNER_TYPE; h->extra_offset = h->extra_size = 0; scratch_size = (hba->sts_count+1)*sizeof(u32); -- 2.2.0.rc0.207.ga3a616c

9 years, 5 months

[PATCH v2] USB: usbmon: Remove timeval usage for timestamp

by Tina Ruchandani

struct timeval' uses 32-bits for its seconds field and will overflow in the year 2038 and beyond. This patch replaces the usage of 'struct timeval' in mon_get_timestamp() with timespec64 which uses a 64-bit seconds field and is y2038-safe. mon_get_timestamp() truncates the timestamp at 4096 seconds, so the correctness of the code is not affected. This patch is part of a larger attempt to remove instances of struct timeval and other 32-bit timekeeping (time_t, struct timespec) from the kernel. Signed-off-by: Tina Ruchandani <ruchandani.tina(a)gmail.com> Suggested-by: Arnd Bergmann <arnd(a)arndb.de> --- Changes in v2: - Switch to monotonic time since we only care about time elapsed. --- drivers/usb/mon/mon_text.c | 9 +++++---- 1 file changed, 5 insertions(+), 4 deletions(-) diff --git a/drivers/usb/mon/mon_text.c b/drivers/usb/mon/mon_text.c index ad40825..98e4f63 100644 --- a/drivers/usb/mon/mon_text.c +++ b/drivers/usb/mon/mon_text.c @@ -9,6 +9,7 @@ #include <linux/usb.h> #include <linux/slab.h> #include <linux/time.h> +#include <linux/ktime.h> #include <linux/export.h> #include <linux/mutex.h> #include <linux/debugfs.h> @@ -176,12 +177,12 @@ static inline char mon_text_get_data(struct mon_event_text *ep, struct urb *urb, static inline unsigned int mon_get_timestamp(void) { - struct timeval tval; + struct timespec64 now; unsigned int stamp; - do_gettimeofday(&tval); - stamp = tval.tv_sec & 0xFFF; /* 2^32 = 4294967296. Limit to 4096s. */ - stamp = stamp * 1000000 + tval.tv_usec; + ktime_get_ts64(&now); + stamp = now.tv_sec & 0xFFF; /* 2^32 = 4294967296. Limit to 4096s. */ + stamp = stamp * USEC_PER_SEC + now.tv_nsec / NSEC_PER_USEC; return stamp; } -- 2.6.0.rc2.230.g3dd15c0

9 years, 5 months

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