X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=fs%2Fproc%2Fbase.c;h=39a3d7c969c5de96496e418eb397b3dec4ed789b;hb=0a4908e19fd016d60403fc76cf38b2d08d21e2d2;hp=42cb4f5613b6f43c5eeb386718b02352f3539d4a;hpb=492559af235eb56884d62553f191c0b5c4def990;p=linux-2.6 diff --git a/fs/proc/base.c b/fs/proc/base.c index 42cb4f5613..39a3d7c969 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -63,15 +63,19 @@ #include #include #include +#include #include #include #include #include +#include #include #include #include #include #include +#include +#include #include "internal.h" /* NOTE: @@ -198,27 +202,6 @@ static int proc_root_link(struct inode *inode, struct dentry **dentry, struct vf (task->state == TASK_STOPPED || task->state == TASK_TRACED) && \ security_ptrace(current,task) == 0)) -static int proc_pid_environ(struct task_struct *task, char * buffer) -{ - int res = 0; - struct mm_struct *mm = get_task_mm(task); - if (mm) { - unsigned int len; - - res = -ESRCH; - if (!ptrace_may_attach(task)) - goto out; - - len = mm->env_end - mm->env_start; - if (len > PAGE_SIZE) - len = PAGE_SIZE; - res = access_process_vm(task, mm->env_start, buffer, len, 0); -out: - mmput(mm); - } - return res; -} - static int proc_pid_cmdline(struct task_struct *task, char * buffer) { int res = 0; @@ -303,7 +286,7 @@ static int proc_pid_schedstat(struct task_struct *task, char *buffer) return sprintf(buffer, "%llu %llu %lu\n", task->sched_info.cpu_time, task->sched_info.run_delay, - task->sched_info.pcnt); + task->sched_info.pcount); } #endif @@ -321,6 +304,78 @@ static int proc_oom_score(struct task_struct *task, char *buffer) return sprintf(buffer, "%lu\n", points); } +struct limit_names { + char *name; + char *unit; +}; + +static const struct limit_names lnames[RLIM_NLIMITS] = { + [RLIMIT_CPU] = {"Max cpu time", "ms"}, + [RLIMIT_FSIZE] = {"Max file size", "bytes"}, + [RLIMIT_DATA] = {"Max data size", "bytes"}, + [RLIMIT_STACK] = {"Max stack size", "bytes"}, + [RLIMIT_CORE] = {"Max core file size", "bytes"}, + [RLIMIT_RSS] = {"Max resident set", "bytes"}, + [RLIMIT_NPROC] = {"Max processes", "processes"}, + [RLIMIT_NOFILE] = {"Max open files", "files"}, + [RLIMIT_MEMLOCK] = {"Max locked memory", "bytes"}, + [RLIMIT_AS] = {"Max address space", "bytes"}, + [RLIMIT_LOCKS] = {"Max file locks", "locks"}, + [RLIMIT_SIGPENDING] = {"Max pending signals", "signals"}, + [RLIMIT_MSGQUEUE] = {"Max msgqueue size", "bytes"}, + [RLIMIT_NICE] = {"Max nice priority", NULL}, + [RLIMIT_RTPRIO] = {"Max realtime priority", NULL}, +}; + +/* Display limits for a process */ +static int proc_pid_limits(struct task_struct *task, char *buffer) +{ + unsigned int i; + int count = 0; + unsigned long flags; + char *bufptr = buffer; + + struct rlimit rlim[RLIM_NLIMITS]; + + rcu_read_lock(); + if (!lock_task_sighand(task,&flags)) { + rcu_read_unlock(); + return 0; + } + memcpy(rlim, task->signal->rlim, sizeof(struct rlimit) * RLIM_NLIMITS); + unlock_task_sighand(task, &flags); + rcu_read_unlock(); + + /* + * print the file header + */ + count += sprintf(&bufptr[count], "%-25s %-20s %-20s %-10s\n", + "Limit", "Soft Limit", "Hard Limit", "Units"); + + for (i = 0; i < RLIM_NLIMITS; i++) { + if (rlim[i].rlim_cur == RLIM_INFINITY) + count += sprintf(&bufptr[count], "%-25s %-20s ", + lnames[i].name, "unlimited"); + else + count += sprintf(&bufptr[count], "%-25s %-20lu ", + lnames[i].name, rlim[i].rlim_cur); + + if (rlim[i].rlim_max == RLIM_INFINITY) + count += sprintf(&bufptr[count], "%-20s ", "unlimited"); + else + count += sprintf(&bufptr[count], "%-20lu ", + rlim[i].rlim_max); + + if (lnames[i].unit) + count += sprintf(&bufptr[count], "%-10s\n", + lnames[i].unit); + else + count += sprintf(&bufptr[count], "\n"); + } + + return count; +} + /************************************************************************/ /* Here the fs part begins */ /************************************************************************/ @@ -369,18 +424,21 @@ struct proc_mounts { static int mounts_open(struct inode *inode, struct file *file) { struct task_struct *task = get_proc_task(inode); + struct nsproxy *nsp; struct mnt_namespace *ns = NULL; struct proc_mounts *p; int ret = -EINVAL; if (task) { - task_lock(task); - if (task->nsproxy) { - ns = task->nsproxy->mnt_ns; + rcu_read_lock(); + nsp = task_nsproxy(task); + if (nsp) { + ns = nsp->mnt_ns; if (ns) get_mnt_ns(ns); } - task_unlock(task); + rcu_read_unlock(); + put_task_struct(task); } @@ -443,16 +501,20 @@ static int mountstats_open(struct inode *inode, struct file *file) if (!ret) { struct seq_file *m = file->private_data; + struct nsproxy *nsp; struct mnt_namespace *mnt_ns = NULL; struct task_struct *task = get_proc_task(inode); if (task) { - task_lock(task); - if (task->nsproxy) - mnt_ns = task->nsproxy->mnt_ns; - if (mnt_ns) - get_mnt_ns(mnt_ns); - task_unlock(task); + rcu_read_lock(); + nsp = task_nsproxy(task); + if (nsp) { + mnt_ns = nsp->mnt_ns; + if (mnt_ns) + get_mnt_ns(mnt_ns); + } + rcu_read_unlock(); + put_task_struct(task); } @@ -491,7 +553,7 @@ static ssize_t proc_info_read(struct file * file, char __user * buf, count = PROC_BLOCK_SIZE; length = -ENOMEM; - if (!(page = __get_free_page(GFP_KERNEL))) + if (!(page = __get_free_page(GFP_TEMPORARY))) goto out; length = PROC_I(inode)->op.proc_read(task, (char*)page); @@ -531,7 +593,7 @@ static ssize_t mem_read(struct file * file, char __user * buf, goto out; ret = -ENOMEM; - page = (char *)__get_free_page(GFP_USER); + page = (char *)__get_free_page(GFP_TEMPORARY); if (!page) goto out; @@ -601,7 +663,7 @@ static ssize_t mem_write(struct file * file, const char __user *buf, goto out; copied = -ENOMEM; - page = (char *)__get_free_page(GFP_USER); + page = (char *)__get_free_page(GFP_TEMPORARY); if (!page) goto out; @@ -657,6 +719,76 @@ static const struct file_operations proc_mem_operations = { .open = mem_open, }; +static ssize_t environ_read(struct file *file, char __user *buf, + size_t count, loff_t *ppos) +{ + struct task_struct *task = get_proc_task(file->f_dentry->d_inode); + char *page; + unsigned long src = *ppos; + int ret = -ESRCH; + struct mm_struct *mm; + + if (!task) + goto out_no_task; + + if (!ptrace_may_attach(task)) + goto out; + + ret = -ENOMEM; + page = (char *)__get_free_page(GFP_TEMPORARY); + if (!page) + goto out; + + ret = 0; + + mm = get_task_mm(task); + if (!mm) + goto out_free; + + while (count > 0) { + int this_len, retval, max_len; + + this_len = mm->env_end - (mm->env_start + src); + + if (this_len <= 0) + break; + + max_len = (count > PAGE_SIZE) ? PAGE_SIZE : count; + this_len = (this_len > max_len) ? max_len : this_len; + + retval = access_process_vm(task, (mm->env_start + src), + page, this_len, 0); + + if (retval <= 0) { + ret = retval; + break; + } + + if (copy_to_user(buf, page, retval)) { + ret = -EFAULT; + break; + } + + ret += retval; + src += retval; + buf += retval; + count -= retval; + } + *ppos = src; + + mmput(mm); +out_free: + free_page((unsigned long) page); +out: + put_task_struct(task); +out_no_task: + return ret; +} + +static const struct file_operations proc_environ_operations = { + .read = environ_read, +}; + static ssize_t oom_adjust_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) { @@ -787,7 +919,7 @@ static ssize_t proc_loginuid_write(struct file * file, const char __user * buf, /* No partial writes. */ return -EINVAL; } - page = (char*)__get_free_page(GFP_USER); + page = (char*)__get_free_page(GFP_TEMPORARY); if (!page) return -ENOMEM; length = -EFAULT; @@ -926,7 +1058,7 @@ static const struct file_operations proc_pid_sched_operations = { .read = seq_read, .write = sched_write, .llseek = seq_lseek, - .release = seq_release, + .release = single_release, }; #endif @@ -953,7 +1085,8 @@ static int do_proc_readlink(struct dentry *dentry, struct vfsmount *mnt, char __user *buffer, int buflen) { struct inode * inode; - char *tmp = (char*)__get_free_page(GFP_KERNEL), *path; + char *tmp = (char*)__get_free_page(GFP_TEMPORARY); + char *path; int len; if (!tmp) @@ -1014,7 +1147,7 @@ static int task_dumpable(struct task_struct *task) task_lock(task); mm = task->mm; if (mm) - dumpable = mm->dumpable; + dumpable = get_dumpable(mm); task_unlock(task); if(dumpable == 1) return 1; @@ -1386,7 +1519,7 @@ static int proc_readfd_common(struct file * filp, void * dirent, struct dentry *dentry = filp->f_path.dentry; struct inode *inode = dentry->d_inode; struct task_struct *p = get_proc_task(inode); - unsigned int fd, tid, ino; + unsigned int fd, ino; int retval; struct files_struct * files; struct fdtable *fdt; @@ -1395,7 +1528,6 @@ static int proc_readfd_common(struct file * filp, void * dirent, if (!p) goto out_no_task; retval = 0; - tid = p->pid; fd = filp->f_pos; switch (fd) { @@ -1630,7 +1762,6 @@ static int proc_pident_readdir(struct file *filp, const struct pid_entry *ents, unsigned int nents) { int i; - int pid; struct dentry *dentry = filp->f_path.dentry; struct inode *inode = dentry->d_inode; struct task_struct *task = get_proc_task(inode); @@ -1643,7 +1774,6 @@ static int proc_pident_readdir(struct file *filp, goto out_no_task; ret = 0; - pid = task->pid; i = filp->f_pos; switch (i) { case 0: @@ -1725,7 +1855,7 @@ static ssize_t proc_pid_attr_write(struct file * file, const char __user * buf, goto out; length = -ENOMEM; - page = (char*)__get_free_page(GFP_USER); + page = (char*)__get_free_page(GFP_TEMPORARY); if (!page) goto out; @@ -1785,6 +1915,91 @@ static const struct inode_operations proc_attr_dir_inode_operations = { #endif +#if defined(USE_ELF_CORE_DUMP) && defined(CONFIG_ELF_CORE) +static ssize_t proc_coredump_filter_read(struct file *file, char __user *buf, + size_t count, loff_t *ppos) +{ + struct task_struct *task = get_proc_task(file->f_dentry->d_inode); + struct mm_struct *mm; + char buffer[PROC_NUMBUF]; + size_t len; + int ret; + + if (!task) + return -ESRCH; + + ret = 0; + mm = get_task_mm(task); + if (mm) { + len = snprintf(buffer, sizeof(buffer), "%08lx\n", + ((mm->flags & MMF_DUMP_FILTER_MASK) >> + MMF_DUMP_FILTER_SHIFT)); + mmput(mm); + ret = simple_read_from_buffer(buf, count, ppos, buffer, len); + } + + put_task_struct(task); + + return ret; +} + +static ssize_t proc_coredump_filter_write(struct file *file, + const char __user *buf, + size_t count, + loff_t *ppos) +{ + struct task_struct *task; + struct mm_struct *mm; + char buffer[PROC_NUMBUF], *end; + unsigned int val; + int ret; + int i; + unsigned long mask; + + ret = -EFAULT; + memset(buffer, 0, sizeof(buffer)); + if (count > sizeof(buffer) - 1) + count = sizeof(buffer) - 1; + if (copy_from_user(buffer, buf, count)) + goto out_no_task; + + ret = -EINVAL; + val = (unsigned int)simple_strtoul(buffer, &end, 0); + if (*end == '\n') + end++; + if (end - buffer == 0) + goto out_no_task; + + ret = -ESRCH; + task = get_proc_task(file->f_dentry->d_inode); + if (!task) + goto out_no_task; + + ret = end - buffer; + mm = get_task_mm(task); + if (!mm) + goto out_no_mm; + + for (i = 0, mask = 1; i < MMF_DUMP_FILTER_BITS; i++, mask <<= 1) { + if (val & mask) + set_bit(i + MMF_DUMP_FILTER_SHIFT, &mm->flags); + else + clear_bit(i + MMF_DUMP_FILTER_SHIFT, &mm->flags); + } + + mmput(mm); + out_no_mm: + put_task_struct(task); + out_no_task: + return ret; +} + +static const struct file_operations proc_coredump_filter_operations = { + .read = proc_coredump_filter_read, + .write = proc_coredump_filter_write, +}; +#endif + /* * /proc/self: */ @@ -1792,14 +2007,14 @@ static int proc_self_readlink(struct dentry *dentry, char __user *buffer, int buflen) { char tmp[PROC_NUMBUF]; - sprintf(tmp, "%d", current->tgid); + sprintf(tmp, "%d", task_tgid_vnr(current)); return vfs_readlink(dentry,buffer,buflen,tmp); } static void *proc_self_follow_link(struct dentry *dentry, struct nameidata *nd) { char tmp[PROC_NUMBUF]; - sprintf(tmp, "%d", current->tgid); + sprintf(tmp, "%d", task_tgid_vnr(current)); return ERR_PTR(vfs_follow_link(nd,tmp)); } @@ -1962,9 +2177,10 @@ static const struct pid_entry tgid_base_stuff[] = { DIR("task", S_IRUGO|S_IXUGO, task), DIR("fd", S_IRUSR|S_IXUSR, fd), DIR("fdinfo", S_IRUSR|S_IXUSR, fdinfo), - INF("environ", S_IRUSR, pid_environ), + REG("environ", S_IRUSR, environ), INF("auxv", S_IRUSR, pid_auxv), INF("status", S_IRUGO, pid_status), + INF("limits", S_IRUSR, pid_limits), #ifdef CONFIG_SCHED_DEBUG REG("sched", S_IRUGO|S_IWUSR, pid_sched), #endif @@ -1994,8 +2210,11 @@ static const struct pid_entry tgid_base_stuff[] = { #ifdef CONFIG_SCHEDSTATS INF("schedstat", S_IRUGO, pid_schedstat), #endif -#ifdef CONFIG_CPUSETS +#ifdef CONFIG_PROC_PID_CPUSET REG("cpuset", S_IRUGO, cpuset), +#endif +#ifdef CONFIG_CGROUPS + REG("cgroup", S_IRUGO, cgroup), #endif INF("oom_score", S_IRUGO, oom_score), REG("oom_adj", S_IRUGO|S_IWUSR, oom_adjust), @@ -2005,6 +2224,9 @@ static const struct pid_entry tgid_base_stuff[] = { #ifdef CONFIG_FAULT_INJECTION REG("make-it-fail", S_IRUGO|S_IWUSR, fault_inject), #endif +#if defined(USE_ELF_CORE_DUMP) && defined(CONFIG_ELF_CORE) + REG("coredump_filter", S_IRUGO|S_IWUSR, coredump_filter), +#endif #ifdef CONFIG_TASK_IO_ACCOUNTING INF("io", S_IRUGO, pid_io_accounting), #endif @@ -2054,27 +2276,27 @@ static const struct inode_operations proc_tgid_base_inode_operations = { * that no dcache entries will exist at process exit time it * just makes it very unlikely that any will persist. */ -void proc_flush_task(struct task_struct *task) +static void proc_flush_task_mnt(struct vfsmount *mnt, pid_t pid, pid_t tgid) { struct dentry *dentry, *leader, *dir; char buf[PROC_NUMBUF]; struct qstr name; name.name = buf; - name.len = snprintf(buf, sizeof(buf), "%d", task->pid); - dentry = d_hash_and_lookup(proc_mnt->mnt_root, &name); + name.len = snprintf(buf, sizeof(buf), "%d", pid); + dentry = d_hash_and_lookup(mnt->mnt_root, &name); if (dentry) { shrink_dcache_parent(dentry); d_drop(dentry); dput(dentry); } - if (thread_group_leader(task)) + if (tgid == 0) goto out; name.name = buf; - name.len = snprintf(buf, sizeof(buf), "%d", task->tgid); - leader = d_hash_and_lookup(proc_mnt->mnt_root, &name); + name.len = snprintf(buf, sizeof(buf), "%d", tgid); + leader = d_hash_and_lookup(mnt->mnt_root, &name); if (!leader) goto out; @@ -2085,7 +2307,7 @@ void proc_flush_task(struct task_struct *task) goto out_put_leader; name.name = buf; - name.len = snprintf(buf, sizeof(buf), "%d", task->pid); + name.len = snprintf(buf, sizeof(buf), "%d", pid); dentry = d_hash_and_lookup(dir, &name); if (dentry) { shrink_dcache_parent(dentry); @@ -2100,6 +2322,36 @@ out: return; } +/* + * when flushing dentries from proc one need to flush them from global + * proc (proc_mnt) and from all the namespaces' procs this task was seen + * in. this call is supposed to make all this job. + */ + +void proc_flush_task(struct task_struct *task) +{ + int i, leader; + struct pid *pid, *tgid; + struct upid *upid; + + leader = thread_group_leader(task); + proc_flush_task_mnt(proc_mnt, task->pid, leader ? task->tgid : 0); + pid = task_pid(task); + if (pid->level == 0) + return; + + tgid = task_tgid(task); + for (i = 1; i <= pid->level; i++) { + upid = &pid->numbers[i]; + proc_flush_task_mnt(upid->ns->proc_mnt, upid->nr, + leader ? 0 : tgid->numbers[i].nr); + } + + upid = &pid->numbers[pid->level]; + if (upid->nr == 1) + pid_ns_release_proc(upid->ns); +} + static struct dentry *proc_pid_instantiate(struct inode *dir, struct dentry * dentry, struct task_struct *task, const void *ptr) @@ -2135,6 +2387,7 @@ struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct struct dentry *result = ERR_PTR(-ENOENT); struct task_struct *task; unsigned tgid; + struct pid_namespace *ns; result = proc_base_lookup(dir, dentry); if (!IS_ERR(result) || PTR_ERR(result) != -ENOENT) @@ -2144,8 +2397,9 @@ struct dentry *proc_pid_lookup(struct inode *dir, struct dentry * dentry, struct if (tgid == ~0U) goto out; + ns = dentry->d_sb->s_fs_info; rcu_read_lock(); - task = find_task_by_pid(tgid); + task = find_task_by_pid_ns(tgid, ns); if (task) get_task_struct(task); rcu_read_unlock(); @@ -2162,7 +2416,8 @@ out: * Find the first task with tgid >= tgid * */ -static struct task_struct *next_tgid(unsigned int tgid) +static struct task_struct *next_tgid(unsigned int tgid, + struct pid_namespace *ns) { struct task_struct *task; struct pid *pid; @@ -2170,9 +2425,9 @@ static struct task_struct *next_tgid(unsigned int tgid) rcu_read_lock(); retry: task = NULL; - pid = find_ge_pid(tgid); + pid = find_ge_pid(tgid, ns); if (pid) { - tgid = pid->nr + 1; + tgid = pid_nr_ns(pid, ns) + 1; task = pid_task(pid, PIDTYPE_PID); /* What we to know is if the pid we have find is the * pid of a thread_group_leader. Testing for task @@ -2212,6 +2467,7 @@ int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir) struct task_struct *reaper = get_proc_task(filp->f_path.dentry->d_inode); struct task_struct *task; int tgid; + struct pid_namespace *ns; if (!reaper) goto out_no_task; @@ -2222,11 +2478,12 @@ int proc_pid_readdir(struct file * filp, void * dirent, filldir_t filldir) goto out; } + ns = filp->f_dentry->d_sb->s_fs_info; tgid = filp->f_pos - TGID_OFFSET; - for (task = next_tgid(tgid); + for (task = next_tgid(tgid, ns); task; - put_task_struct(task), task = next_tgid(tgid + 1)) { - tgid = task->pid; + put_task_struct(task), task = next_tgid(tgid + 1, ns)) { + tgid = task_pid_nr_ns(task, ns); filp->f_pos = tgid + TGID_OFFSET; if (proc_pid_fill_cache(filp, dirent, filldir, task, tgid) < 0) { put_task_struct(task); @@ -2246,9 +2503,10 @@ out_no_task: static const struct pid_entry tid_base_stuff[] = { DIR("fd", S_IRUSR|S_IXUSR, fd), DIR("fdinfo", S_IRUSR|S_IXUSR, fdinfo), - INF("environ", S_IRUSR, pid_environ), + REG("environ", S_IRUSR, environ), INF("auxv", S_IRUSR, pid_auxv), INF("status", S_IRUGO, pid_status), + INF("limits", S_IRUSR, pid_limits), #ifdef CONFIG_SCHED_DEBUG REG("sched", S_IRUGO|S_IWUSR, pid_sched), #endif @@ -2277,8 +2535,11 @@ static const struct pid_entry tid_base_stuff[] = { #ifdef CONFIG_SCHEDSTATS INF("schedstat", S_IRUGO, pid_schedstat), #endif -#ifdef CONFIG_CPUSETS +#ifdef CONFIG_PROC_PID_CPUSET REG("cpuset", S_IRUGO, cpuset), +#endif +#ifdef CONFIG_CGROUPS + REG("cgroup", S_IRUGO, cgroup), #endif INF("oom_score", S_IRUGO, oom_score), REG("oom_adj", S_IRUGO|S_IWUSR, oom_adjust), @@ -2347,6 +2608,7 @@ static struct dentry *proc_task_lookup(struct inode *dir, struct dentry * dentry struct task_struct *task; struct task_struct *leader = get_proc_task(dir); unsigned tid; + struct pid_namespace *ns; if (!leader) goto out_no_task; @@ -2355,14 +2617,15 @@ static struct dentry *proc_task_lookup(struct inode *dir, struct dentry * dentry if (tid == ~0U) goto out; + ns = dentry->d_sb->s_fs_info; rcu_read_lock(); - task = find_task_by_pid(tid); + task = find_task_by_pid_ns(tid, ns); if (task) get_task_struct(task); rcu_read_unlock(); if (!task) goto out; - if (leader->tgid != task->tgid) + if (!same_thread_group(leader, task)) goto out_drop_task; result = proc_task_instantiate(dir, dentry, task, NULL); @@ -2387,14 +2650,14 @@ out_no_task: * threads past it. */ static struct task_struct *first_tid(struct task_struct *leader, - int tid, int nr) + int tid, int nr, struct pid_namespace *ns) { struct task_struct *pos; rcu_read_lock(); /* Attempt to start with the pid of a thread */ if (tid && (nr > 0)) { - pos = find_task_by_pid(tid); + pos = find_task_by_pid_ns(tid, ns); if (pos && (pos->group_leader == leader)) goto found; } @@ -2463,6 +2726,7 @@ static int proc_task_readdir(struct file * filp, void * dirent, filldir_t filldi ino_t ino; int tid; unsigned long pos = filp->f_pos; /* avoiding "long long" filp->f_pos */ + struct pid_namespace *ns; task = get_proc_task(inode); if (!task) @@ -2496,16 +2760,17 @@ static int proc_task_readdir(struct file * filp, void * dirent, filldir_t filldi /* f_version caches the tgid value that the last readdir call couldn't * return. lseek aka telldir automagically resets f_version to 0. */ - tid = filp->f_version; + ns = filp->f_dentry->d_sb->s_fs_info; + tid = (int)filp->f_version; filp->f_version = 0; - for (task = first_tid(leader, tid, pos - 2); + for (task = first_tid(leader, tid, pos - 2, ns); task; task = next_tid(task), pos++) { - tid = task->pid; + tid = task_pid_nr_ns(task, ns); if (proc_task_fill_cache(filp, dirent, filldir, task, tid) < 0) { /* returning this tgid failed, save it as the first * pid for the next readir call */ - filp->f_version = tid; + filp->f_version = (u64)tid; put_task_struct(task); break; }