143 lines
4.1 KiB
Diff
143 lines
4.1 KiB
Diff
From 3a85bf0e417d0977136efbade7c7ea269e24bc21 Mon Sep 17 00:00:00 2001
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From: Mateusz Grzonka <mateusz.grzonka@intel.com>
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Date: Mon, 28 Jun 2021 14:15:04 +0200
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Subject: [PATCH 14/15] imsm: Fix possible memory leaks and refactor freeing
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struct dl
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Free memory allocated by structs dl and intel_super.
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Allow __free_imsm_disk to decide if fd has to be closed and propagate it
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across code instead of direct struct dl freeing.
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Signed-off-by: Mateusz Grzonka <mateusz.grzonka@intel.com>
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Signed-off-by: Jes Sorensen <jsorensen@fb.com>
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---
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super-intel.c | 39 +++++++++++++++++++--------------------
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1 file changed, 19 insertions(+), 20 deletions(-)
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diff --git a/super-intel.c b/super-intel.c
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index aeea137..da37625 100644
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--- a/super-intel.c
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+++ b/super-intel.c
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@@ -4499,9 +4499,9 @@ load_and_parse_mpb(int fd, struct intel_super *super, char *devname, int keep_fd
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return err;
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}
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-static void __free_imsm_disk(struct dl *d)
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+static void __free_imsm_disk(struct dl *d, int close_fd)
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{
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- if (d->fd >= 0)
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+ if (close_fd && d->fd > -1)
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close(d->fd);
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if (d->devname)
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free(d->devname);
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@@ -4518,17 +4518,17 @@ static void free_imsm_disks(struct intel_super *super)
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while (super->disks) {
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d = super->disks;
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super->disks = d->next;
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- __free_imsm_disk(d);
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+ __free_imsm_disk(d, 1);
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}
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while (super->disk_mgmt_list) {
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d = super->disk_mgmt_list;
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super->disk_mgmt_list = d->next;
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- __free_imsm_disk(d);
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+ __free_imsm_disk(d, 1);
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}
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while (super->missing) {
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d = super->missing;
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super->missing = d->next;
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- __free_imsm_disk(d);
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+ __free_imsm_disk(d, 1);
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}
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}
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@@ -5243,10 +5243,13 @@ static int load_super_imsm(struct supertype *st, int fd, char *devname)
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free_super_imsm(st);
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super = alloc_super();
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- if (!get_dev_sector_size(fd, NULL, &super->sector_size))
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- return 1;
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if (!super)
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return 1;
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+
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+ if (!get_dev_sector_size(fd, NULL, &super->sector_size)) {
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+ free_imsm(super);
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+ return 1;
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+ }
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/* Load hba and capabilities if they exist.
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* But do not preclude loading metadata in case capabilities or hba are
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* non-compliant and ignore_hw_compat is set.
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@@ -5884,9 +5887,7 @@ static int add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk,
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rv = imsm_read_serial(fd, devname, dd->serial, MAX_RAID_SERIAL_LEN);
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if (rv) {
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pr_err("failed to retrieve scsi serial, aborting\n");
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- if (dd->devname)
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- free(dd->devname);
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- free(dd);
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+ __free_imsm_disk(dd, 0);
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abort();
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}
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@@ -5900,10 +5901,7 @@ static int add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk,
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if (!diskfd_to_devpath(fd, 2, pci_dev_path) ||
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!diskfd_to_devpath(fd, 1, cntrl_path)) {
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pr_err("failed to get dev paths, aborting\n");
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-
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- if (dd->devname)
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- free(dd->devname);
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- free(dd);
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+ __free_imsm_disk(dd, 0);
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return 1;
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}
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@@ -5939,15 +5937,16 @@ static int add_to_super_imsm(struct supertype *st, mdu_disk_info_t *dk,
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!imsm_orom_has_tpv_support(super->orom)) {
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pr_err("\tPlatform configuration does not support non-Intel NVMe drives.\n"
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"\tPlease refer to Intel(R) RSTe/VROC user guide.\n");
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- free(dd->devname);
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- free(dd);
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+ __free_imsm_disk(dd, 0);
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return 1;
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}
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}
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get_dev_size(fd, NULL, &size);
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- if (!get_dev_sector_size(fd, NULL, &member_sector_size))
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+ if (!get_dev_sector_size(fd, NULL, &member_sector_size)) {
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+ __free_imsm_disk(dd, 0);
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return 1;
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+ }
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if (super->sector_size == 0) {
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/* this a first device, so sector_size is not set yet */
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@@ -9260,7 +9259,7 @@ static int remove_disk_super(struct intel_super *super, int major, int minor)
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else
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super->disks = dl->next;
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dl->next = NULL;
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- __free_imsm_disk(dl);
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+ __free_imsm_disk(dl, 1);
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dprintf("removed %x:%x\n", major, minor);
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break;
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}
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@@ -9310,7 +9309,7 @@ static int add_remove_disk_update(struct intel_super *super)
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}
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}
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/* release allocate disk structure */
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- __free_imsm_disk(disk_cfg);
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+ __free_imsm_disk(disk_cfg, 1);
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}
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}
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return check_degraded;
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@@ -10511,7 +10510,7 @@ static void imsm_delete(struct intel_super *super, struct dl **dlp, unsigned ind
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struct dl *dl = *dlp;
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*dlp = (*dlp)->next;
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- __free_imsm_disk(dl);
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+ __free_imsm_disk(dl, 1);
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}
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}
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--
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2.7.5
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