The patch titled isdn: use non-racy method for proc entries creation has been added to the -mm tree. Its filename is isdn-use-non-racy-method-for-proc-entries-creation.patch Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/SubmitChecklist when testing your code *** See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find out what to do about this The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: isdn: use non-racy method for proc entries creation From: "Denis V. Lunev" <den@xxxxxxxxxx> Use proc_create()/proc_create_data() to make sure that ->proc_fops and ->data be setup before gluing PDE to main tree. Add correct ->owner to proc_fops to fix reading/module unloading race. Signed-off-by: Denis V. Lunev <den@xxxxxxxxxx> Cc: Karsten Keil <kkeil@xxxxxxx> Cc: Alexey Dobriyan <adobriyan@xxxxxxxxx> Cc: "Eric W. Biederman" <ebiederm@xxxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- drivers/isdn/capi/kcapi_proc.c | 24 +++++++++------------- drivers/isdn/divert/divert_procfs.c | 5 +--- drivers/isdn/hardware/eicon/divasproc.c | 8 +------ drivers/isdn/hysdn/hysdn_procconf.c | 9 +++----- drivers/isdn/hysdn/hysdn_proclog.c | 8 +++---- 5 files changed, 22 insertions(+), 32 deletions(-) diff -puN drivers/isdn/capi/kcapi_proc.c~isdn-use-non-racy-method-for-proc-entries-creation drivers/isdn/capi/kcapi_proc.c --- a/drivers/isdn/capi/kcapi_proc.c~isdn-use-non-racy-method-for-proc-entries-creation +++ a/drivers/isdn/capi/kcapi_proc.c @@ -114,6 +114,7 @@ static int seq_contrstats_open(struct in } static const struct file_operations proc_controller_ops = { + .owner = THIS_MODULE, .open = seq_controller_open, .read = seq_read, .llseek = seq_lseek, @@ -121,6 +122,7 @@ static const struct file_operations proc }; static const struct file_operations proc_contrstats_ops = { + .owner = THIS_MODULE, .open = seq_contrstats_open, .read = seq_read, .llseek = seq_lseek, @@ -219,6 +221,7 @@ seq_applstats_open(struct inode *inode, } static const struct file_operations proc_applications_ops = { + .owner = THIS_MODULE, .open = seq_applications_open, .read = seq_read, .llseek = seq_lseek, @@ -226,21 +229,13 @@ static const struct file_operations proc }; static const struct file_operations proc_applstats_ops = { + .owner = THIS_MODULE, .open = seq_applstats_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release, }; -static void -create_seq_entry(char *name, mode_t mode, const struct file_operations *f) -{ - struct proc_dir_entry *entry; - entry = create_proc_entry(name, mode, NULL); - if (entry) - entry->proc_fops = f; -} - // --------------------------------------------------------------------------- static void *capi_driver_start(struct seq_file *seq, loff_t *pos) @@ -283,6 +278,7 @@ seq_capi_driver_open(struct inode *inode } static const struct file_operations proc_driver_ops = { + .owner = THIS_MODULE, .open = seq_capi_driver_open, .read = seq_read, .llseek = seq_lseek, @@ -296,11 +292,11 @@ kcapi_proc_init(void) { proc_mkdir("capi", NULL); proc_mkdir("capi/controllers", NULL); - create_seq_entry("capi/controller", 0, &proc_controller_ops); - create_seq_entry("capi/contrstats", 0, &proc_contrstats_ops); - create_seq_entry("capi/applications", 0, &proc_applications_ops); - create_seq_entry("capi/applstats", 0, &proc_applstats_ops); - create_seq_entry("capi/driver", 0, &proc_driver_ops); + proc_create("capi/controller", 0, NULL, &proc_controller_ops); + proc_create("capi/contrstats", 0, NULL, &proc_contrstats_ops); + proc_create("capi/applications", 0, NULL, &proc_applications_ops); + proc_create("capi/applstats", 0, NULL, &proc_applstats_ops); + proc_create("capi/driver", 0, NULL, &proc_driver_ops); } void __exit diff -puN drivers/isdn/divert/divert_procfs.c~isdn-use-non-racy-method-for-proc-entries-creation drivers/isdn/divert/divert_procfs.c --- a/drivers/isdn/divert/divert_procfs.c~isdn-use-non-racy-method-for-proc-entries-creation +++ a/drivers/isdn/divert/divert_procfs.c @@ -288,13 +288,12 @@ divert_dev_init(void) isdn_proc_entry = proc_mkdir("isdn", init_net.proc_net); if (!isdn_proc_entry) return (-1); - isdn_divert_entry = create_proc_entry("divert", S_IFREG | S_IRUGO, isdn_proc_entry); + isdn_divert_entry = proc_create("divert", S_IFREG | S_IRUGO, + isdn_proc_entry, &isdn_fops); if (!isdn_divert_entry) { remove_proc_entry("isdn", init_net.proc_net); return (-1); } - isdn_divert_entry->proc_fops = &isdn_fops; - isdn_divert_entry->owner = THIS_MODULE; #endif /* CONFIG_PROC_FS */ return (0); diff -puN drivers/isdn/hardware/eicon/divasproc.c~isdn-use-non-racy-method-for-proc-entries-creation drivers/isdn/hardware/eicon/divasproc.c --- a/drivers/isdn/hardware/eicon/divasproc.c~isdn-use-non-racy-method-for-proc-entries-creation +++ a/drivers/isdn/hardware/eicon/divasproc.c @@ -125,15 +125,11 @@ static const struct file_operations diva int create_divas_proc(void) { - divas_proc_entry = create_proc_entry(divas_proc_name, - S_IFREG | S_IRUGO, - proc_net_eicon); + proc_create(divas_proc_name, S_IFREG | S_IRUGO, proc_net_eicon, + &divas_fops); if (!divas_proc_entry) return (0); - divas_proc_entry->proc_fops = &divas_fops; - divas_proc_entry->owner = THIS_MODULE; - return (1); } diff -puN drivers/isdn/hysdn/hysdn_procconf.c~isdn-use-non-racy-method-for-proc-entries-creation drivers/isdn/hysdn/hysdn_procconf.c --- a/drivers/isdn/hysdn/hysdn_procconf.c~isdn-use-non-racy-method-for-proc-entries-creation +++ a/drivers/isdn/hysdn/hysdn_procconf.c @@ -370,6 +370,7 @@ hysdn_conf_close(struct inode *ino, stru /******************************************************/ static const struct file_operations conf_fops = { + .owner = THIS_MODULE, .llseek = no_llseek, .read = hysdn_conf_read, .write = hysdn_conf_write, @@ -402,11 +403,9 @@ hysdn_procconf_init(void) while (card) { sprintf(conf_name, "%s%d", PROC_CONF_BASENAME, card->myid); - if ((card->procconf = (void *) create_proc_entry(conf_name, - S_IFREG | S_IRUGO | S_IWUSR, - hysdn_proc_entry)) != NULL) { - ((struct proc_dir_entry *) card->procconf)->proc_fops = &conf_fops; - ((struct proc_dir_entry *) card->procconf)->owner = THIS_MODULE; + if ((card->procconf = (void *) proc_create(conf_name, + S_IFREG | S_IRUGO | S_IWUSR, + hysdn_proc_entry)) != NULL) { hysdn_proclog_init(card); /* init the log file entry */ } card = card->next; /* next entry */ diff -puN drivers/isdn/hysdn/hysdn_proclog.c~isdn-use-non-racy-method-for-proc-entries-creation drivers/isdn/hysdn/hysdn_proclog.c --- a/drivers/isdn/hysdn/hysdn_proclog.c~isdn-use-non-racy-method-for-proc-entries-creation +++ a/drivers/isdn/hysdn/hysdn_proclog.c @@ -380,6 +380,7 @@ hysdn_log_poll(struct file *file, poll_t /**************************************************/ static const struct file_operations log_fops = { + .owner = THIS_MODULE, .llseek = no_llseek, .read = hysdn_log_read, .write = hysdn_log_write, @@ -402,10 +403,9 @@ hysdn_proclog_init(hysdn_card * card) if ((pd = kzalloc(sizeof(struct procdata), GFP_KERNEL)) != NULL) { sprintf(pd->log_name, "%s%d", PROC_LOG_BASENAME, card->myid); - if ((pd->log = create_proc_entry(pd->log_name, S_IFREG | S_IRUGO | S_IWUSR, hysdn_proc_entry)) != NULL) { - pd->log->proc_fops = &log_fops; - pd->log->owner = THIS_MODULE; - } + pd->log = proc_create(pd->log_name, + S_IFREG | S_IRUGO | S_IWUSR, hysdn_proc_entry, + &log_fops); init_waitqueue_head(&(pd->rd_queue)); _ Patches currently in -mm which might be from den@xxxxxxxxxx are git-net.patch proc-introduce-proc_create_data-to-setup-de-data.patch nfsd-use-proc_create-to-setup-de-proc_fops.patch nfs-use-proc_create-to-setup-de-proc_fops.patch afs-use-non-racy-method-for-proc-entries-creation.patch ext4-use-non-racy-method-for-proc-entries-creation.patch reiserfs-use-non-racy-method-for-proc-entries-creation.patch jbd2-use-non-racy-method-for-proc-entries-creation.patch sysvipc-use-non-racy-method-for-proc-entries-creation.patch mm-use-non-racy-method-for-proc-swaps-creation.patch sound-use-non-racy-method-for-proc-driver-snd-page-alloc-creation.patch zorro-use-non-racy-method-for-proc-entries-creation.patch samples-use-non-racy-method-for-proc-marker-example-creation.patch scsi-use-non-racy-method-for-proc-entries-creation.patch usb-use-non-racy-method-for-proc-entries-creation.patch s390-use-non-racy-method-for-proc-entries-creation.patch arm-use-non-racy-method-for-proc-davinci_clocks-creation.patch avr32-proc-use-non-racy-method-for-proc-tlb-creation.patch cris-use-non-racy-method-for-proc-system_profile-creation.patch ia64-use-non-racy-method-for-proc-entries-creation.patch parisc-use-non-racy-method-for-proc-pcxl_dma-creation.patch powerpc-use-non-racy-method-for-proc-entries-creation.patch acpi-use-non-racy-method-for-proc-entries-creation.patch netdev-use-non-racy-method-for-proc-entries-creation.patch isdn-use-non-racy-method-for-proc-entries-creation.patch kernel-use-non-racy-method-for-proc-entries-creation.patch parisc-use-non-racy-method-for-proc-entries-creation.patch drivers-use-non-racy-method-for-proc-entries-creation.patch drivers-use-non-racy-method-for-proc-entries-creation-2.patch sysctl-merge-equal-proc_sys_read-and-proc_sys_write.patch sysctl-clean-from-unneeded-extern-and-forward-declarations.patch sysctl-add-the-permissions-callback-on-the-ctl_table_root.patch proc-use-non-racy-method-for-proc-page_owner-creation-page_owner.patch -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html