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* [PATCH] inline more audit helpersAl Viro2006-06-201-10/+4Star
| | | | | | pull checks for ->audit_context into inlined wrappers Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] update of IPC audit record cleanupLinda Knippers2006-06-201-17/+5Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following patch addresses most of the issues with the IPC_SET_PERM records as described in: https://www.redhat.com/archives/linux-audit/2006-May/msg00010.html and addresses the comments I received on the record field names. To summarize, I made the following changes: 1. Changed sys_msgctl() and semctl_down() so that an IPC_SET_PERM record is emitted in the failure case as well as the success case. This matches the behavior in sys_shmctl(). I could simplify the code in sys_msgctl() and semctl_down() slightly but it would mean that in some error cases we could get an IPC_SET_PERM record without an IPC record and that seemed odd. 2. No change to the IPC record type, given no feedback on the backward compatibility question. 3. Removed the qbytes field from the IPC record. It wasn't being set and when audit_ipc_obj() is called from ipcperms(), the information isn't available. If we want the information in the IPC record, more extensive changes will be necessary. Since it only applies to message queues and it isn't really permission related, it doesn't seem worth it. 4. Removed the obj field from the IPC_SET_PERM record. This means that the kern_ipc_perm argument is no longer needed. 5. Removed the spaces and renamed the IPC_SET_PERM field names. Replaced iuid and igid fields with ouid and ogid in the IPC record. I tested this with the lspp.22 kernel on an x86_64 box. I believe it applies cleanly on the latest kernel. -- ljk Signed-off-by: Linda Knippers <linda.knippers@hp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] add filtering by ppidAl Viro2006-06-201-0/+4
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] log ppidAl Viro2006-06-201-2/+5
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] collect sid of those who send signals to auditdAl Viro2006-06-201-11/+12
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] execve argument loggingAl Viro2006-06-201-0/+51
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] Audit Filter PerformanceSteve Grubb2006-05-011-4/+7
| | | | | | | | | | While testing the watch performance, I noticed that selinux_task_ctxid() was creeping into the results more than it should. Investigation showed that the function call was being called whether it was needed or not. The below patch fixes this. Signed-off-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] Rework of IPC auditingSteve Grubb2006-05-011-3/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1) The audit_ipc_perms() function has been split into two different functions: - audit_ipc_obj() - audit_ipc_set_perm() There's a key shift here... The audit_ipc_obj() collects the uid, gid, mode, and SElinux context label of the current ipc object. This audit_ipc_obj() hook is now found in several places. Most notably, it is hooked in ipcperms(), which is called in various places around the ipc code permforming a MAC check. Additionally there are several places where *checkid() is used to validate that an operation is being performed on a valid object while not necessarily having a nearby ipcperms() call. In these locations, audit_ipc_obj() is called to ensure that the information is captured by the audit system. The audit_set_new_perm() function is called any time the permissions on the ipc object changes. In this case, the NEW permissions are recorded (and note that an audit_ipc_obj() call exists just a few lines before each instance). 2) Support for an AUDIT_IPC_SET_PERM audit message type. This allows for separate auxiliary audit records for normal operations on an IPC object and permissions changes. Note that the same struct audit_aux_data_ipcctl is used and populated, however there are separate audit_log_format statements based on the type of the message. Finally, the AUDIT_IPC block of code in audit_free_aux() was extended to handle aux messages of this new type. No more mem leaks I hope ;-) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] More user space subject labelsSteve Grubb2006-05-011-2/+2
| | | | | | | | | | | | Hi, The patch below builds upon the patch sent earlier and adds subject label to all audit events generated via the netlink interface. It also cleans up a few other minor things. Signed-off-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] change lspp ipc auditingSteve Grubb2006-05-011-47/+21Star
| | | | | | | | | | | | Hi, The patch below converts IPC auditing to collect sid's and convert to context string only if it needs to output an audit record. This patch depends on the inode audit change patch already being applied. Signed-off-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] audit inode patchSteve Grubb2006-05-011-37/+16Star
| | | | | | | | | | Previously, we were gathering the context instead of the sid. Now in this patch, we gather just the sid and convert to context only if an audit event is being output. This patch brings the performance hit from 146% down to 23% Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] support for context based audit filtering, part 2Darrel Goeddel2006-05-011-0/+20
| | | | | | | | | | | This patch provides the ability to filter audit messages based on the elements of the process' SELinux context (user, role, type, mls sensitivity, and mls clearance). It uses the new interfaces from selinux to opaquely store information related to the selinux context and to filter based on that information. It also uses the callback mechanism provided by selinux to refresh the information when a new policy is loaded. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] no need to wank with task_lock() and pinning task down in ↵Al Viro2006-05-011-9/+1Star
| | | | | | audit_syscall_exit() Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] drop task argument of audit_syscall_{entry,exit}Al Viro2006-05-011-4/+4
| | | | | | ... it's always current, and that's a good thing - allows simpler locking. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] drop gfp_mask in audit_log_exit()Al Viro2006-05-011-30/+32
| | | | | | | now we can do that - all callers are process-synchronous and do not hold any locks. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] move call of audit_free() into do_exit()Al Viro2006-05-011-8/+1Star
| | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* [PATCH] deal with deadlocks in audit_free()Al Viro2006-05-011-10/+10
| | | | | | | Don't assume that audit_log_exit() et.al. are called for the context of current; pass task explictly. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* Merge branch 'audit.b3' of ↵Linus Torvalds2006-03-251-400/+434
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current * 'audit.b3' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit-current: (22 commits) [PATCH] fix audit_init failure path [PATCH] EXPORT_SYMBOL patch for audit_log, audit_log_start, audit_log_end and audit_format [PATCH] sem2mutex: audit_netlink_sem [PATCH] simplify audit_free() locking [PATCH] Fix audit operators [PATCH] promiscuous mode [PATCH] Add tty to syscall audit records [PATCH] add/remove rule update [PATCH] audit string fields interface + consumer [PATCH] SE Linux audit events [PATCH] Minor cosmetic cleanups to the code moved into auditfilter.c [PATCH] Fix audit record filtering with !CONFIG_AUDITSYSCALL [PATCH] Fix IA64 success/failure indication in syscall auditing. [PATCH] Miscellaneous bug and warning fixes [PATCH] Capture selinux subject/object context information. [PATCH] Exclude messages by message type [PATCH] Collect more inode information during syscall processing. [PATCH] Pass dentry, not just name, in fsnotify creation hooks. [PATCH] Define new range of userspace messages. [PATCH] Filter rule comparators ... Fixed trivial conflict in security/selinux/hooks.c
| * [PATCH] simplify audit_free() lockingIngo Molnar2006-03-201-3/+7
| | | | | | | | | | | | | | | | | | | | | | Simplify audit_free()'s locking: no need to lock a task that we are tearing down. [the extra locking also caused false positives in the lock validator] Signed-off-by: Ingo Molnar <mingo@elte.hu> Cc: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [PATCH] Add tty to syscall audit recordsSteve Grubb2006-03-201-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Hi, >From the RBAC specs: FAU_SAR.1.1 The TSF shall provide the set of authorized RBAC administrators with the capability to read the following audit information from the audit records: <snip> (e) The User Session Identifier or Terminal Type A patch adding the tty for all syscalls is included in this email. Please apply. Signed-off-by: Steve Grubb <sgrubb@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [PATCH] audit string fields interface + consumerAmy Griffis2006-03-201-26/+24Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Updated patch to dynamically allocate audit rule fields in kernel's internal representation. Added unlikely() calls for testing memory allocation result. Amy Griffis wrote: [Wed Jan 11 2006, 02:02:31PM EST] > Modify audit's kernel-userspace interface to allow the specification > of string fields in audit rules. > > Signed-off-by: Amy Griffis <amy.griffis@hp.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> (cherry picked from 5ffc4a863f92351b720fe3e9c5cd647accff9e03 commit)
| * [PATCH] Fix audit record filtering with !CONFIG_AUDITSYSCALLDavid Woodhouse2006-03-201-376/+4Star
| | | | | | | | | | | | | | | | | | | | This fixes the per-user and per-message-type filtering when syscall auditing isn't enabled. [AV: folded followup fix from the same author] Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [PATCH] Miscellaneous bug and warning fixesDustin Kirkland2006-03-201-9/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch fixes a couple of bugs revealed in new features recently added to -mm1: * fixes warnings due to inconsistent use of const struct inode *inode * fixes bug that prevent a kernel from booting with audit on, and SELinux off due to a missing function in security/dummy.c * fixes a bug that throws spurious audit_panic() messages due to a missing return just before an error_path label * some reasonable house cleaning in audit_ipc_context(), audit_inode_context(), and audit_log_task_context() Signed-off-by: Dustin Kirkland <dustin.kirkland@us.ibm.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * [PATCH] Capture selinux subject/object context information.Dustin Kirkland2006-03-201-8/+134
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch extends existing audit records with subject/object context information. Audit records associated with filesystem inodes, ipc, and tasks now contain SELinux label information in the field "subj" if the item is performing the action, or in "obj" if the item is the receiver of an action. These labels are collected via hooks in SELinux and appended to the appropriate record in the audit code. This additional information is required for Common Criteria Labeled Security Protection Profile (LSPP). [AV: fixed kmalloc flags use] [folded leak fixes] [folded cleanup from akpm (kfree(NULL)] [folded audit_inode_context() leak fix] [folded akpm's fix for audit_ipc_perm() definition in case of !CONFIG_AUDIT] Signed-off-by: Dustin Kirkland <dustin.kirkland@us.ibm.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [PATCH] Exclude messages by message typeDustin Kirkland2006-03-201-1/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Add a new, 5th filter called "exclude". - And add a new field AUDIT_MSGTYPE. - Define a new function audit_filter_exclude() that takes a message type as input and examines all rules in the filter. It returns '1' if the message is to be excluded, and '0' otherwise. - Call the audit_filter_exclude() function near the top of audit_log_start() just after asserting audit_initialized. If the message type is not to be audited, return NULL very early, before doing a lot of work. [combined with followup fix for bug in original patch, Nov 4, same author] [combined with later renaming AUDIT_FILTER_EXCLUDE->AUDIT_FILTER_TYPE and audit_filter_exclude() -> audit_filter_type()] Signed-off-by: Dustin Kirkland <dustin.kirkland@us.ibm.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [PATCH] Collect more inode information during syscall processing.Amy Griffis2006-03-201-24/+118
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch augments the collection of inode info during syscall processing. It represents part of the functionality that was provided by the auditfs patch included in RHEL4. Specifically, it: - Collects information for target inodes created or removed during syscalls. Previous code only collects information for the target inode's parent. - Adds the audit_inode() hook to syscalls that operate on a file descriptor (e.g. fchown), enabling audit to do inode filtering for these calls. - Modifies filtering code to check audit context for either an inode # or a parent inode # matching a given rule. - Modifies logging to provide inode # for both parent and child. - Protect debug info from NULL audit_names.name. [AV: folded a later typo fix from the same author] Signed-off-by: Amy Griffis <amy.griffis@hp.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| * [PATCH] Pass dentry, not just name, in fsnotify creation hooks.Amy Griffis2006-03-201-1/+1
| | | | | | | | | | | | | | | | The audit hooks (to be added shortly) will want to see dentry->d_inode too, not just the name. Signed-off-by: Amy Griffis <amy.griffis@hp.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * [PATCH] Filter rule comparatorsDustin Kirkland2006-03-201-42/+75
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, audit only supports the "=" and "!=" operators in the -F filter rules. This patch reworks the support for "=" and "!=", and adds support for ">", ">=", "<", and "<=". This turned out to be a pretty clean, and simply process. I ended up using the high order bits of the "field", as suggested by Steve and Amy. This allowed for no changes whatsoever to the netlink communications. See the documentation within the patch in the include/linux/audit.h area, where there is a table that explains the reasoning of the bitmask assignments clearly. The patch adds a new function, audit_comparator(left, op, right). This function will perform the specified comparison (op, which defaults to "==" for backward compatibility) between two values (left and right). If the negate bit is on, it will negate whatever that result was. This value is returned. Signed-off-by: Dustin Kirkland <dustin.kirkland@us.ibm.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * [PATCH] AUDIT: kerneldoc for kernel/audit*.cRandy Dunlap2006-03-201-18/+132
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - add kerneldoc for non-static functions; - don't init static data to 0; - limit lines to < 80 columns; - fix long-format style; - delete whitespace at end of some lines; (chrisw: resend and update to current audit-2.6 tree) Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Chris Wright <chrisw@osdl.org> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
| * [PATCH] make vm86 call audit_syscall_exitJason Baron2006-03-201-5/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | hi, The motivation behind the patch below was to address messages in /var/log/messages such as: Jan 31 10:54:15 mets kernel: audit(:0): major=252 name_count=0: freeing multiple contexts (1) Jan 31 10:54:15 mets kernel: audit(:0): major=113 name_count=0: freeing multiple contexts (2) I can reproduce by running 'get-edid' from: http://john.fremlin.de/programs/linux/read-edid/. These messages come about in the log b/c the vm86 calls do not exit via the normal system call exit paths and thus do not call 'audit_syscall_exit'. The next system call will then free the context for itself and for the vm86 context, thus generating the above messages. This patch addresses the issue by simply adding a call to 'audit_syscall_exit' from the vm86 code. Besides fixing the above error messages the patch also now allows vm86 system calls to become auditable. This is useful since strace does not appear to properly record the return values from sys_vm86. I think this patch is also a step in the right direction in terms of cleaning up some core auditing code. If we can correct any other paths that do not properly call the audit exit and entries points, then we can also eliminate the notion of context chaining. I've tested this patch by verifying that the log messages no longer appear, and that the audit records for sys_vm86 appear to be correct. Also, 'read_edid' produces itentical output. thanks, -Jason Signed-off-by: Jason Baron <jbaron@redhat.com> Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | Merge ../powerpc-mergePaul Mackerras2006-02-241-3/+3
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| * [PATCH] GFP_KERNEL allocations in atomic (auditsc)Al Viro2006-02-181-3/+3
| | | | | | | | | | | | | | | | audit_log_exit() is called from atomic contexts and gets explicit gfp_mask argument; it should use it for all allocations rather than doing some with gfp_mask and some with GFP_KERNEL. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
* | [PATCH] powerpc: trivial: modify comments to refer to new location of filesJon Mason2006-02-101-1/+1
|/ | | | | | | | | This patch removes all self references and fixes references to files in the now defunct arch/ppc64 tree. I think this accomplises everything wanted, though there might be a few references I missed. Signed-off-by: Jon Mason <jdmason@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [PATCH] EDAC: atomic scrub operationsAlan Cox2006-01-191-1/+1
| | | | | | | | | | | | | | | | | EDAC requires a way to scrub memory if an ECC error is found and the chipset does not do the work automatically. That means rewriting memory locations atomically with respect to all CPUs _and_ bus masters. That means we can't use atomic_add(foo, 0) as it gets optimised for non-SMP This adds a function to include/asm-foo/atomic.h for the platforms currently supported which implements a scrub of a mapped block. It also adjusts a few other files include order where atomic.h is included before types.h as this now causes an error as atomic_scrub uses u32. Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [PATCH] gfp_t: kernel/*Al Viro2005-10-281-1/+1
| | | | | Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* [AUDIT] Allow filtering on system call success _or_ failureDavid Woodhouse2005-08-271-2/+6
| | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* AUDIT: Prevent duplicate syscall rulesAmy Griffis2005-08-171-39/+56
| | | | | | | | | | | The following patch against audit.81 prevents duplicate syscall rules in a given filter list by walking the list on each rule add. I also removed the unused struct audit_entry in audit.c and made the static inlines in auditsc.c consistent. Signed-off-by: Amy Griffis <amy.griffis@hp.com> Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* AUDIT: Speed up audit_filter_syscall() for the non-auditable case.David Woodhouse2005-08-171-10/+12
| | | | | | | It was showing up fairly high on profiles even when no rules were set. Make sure the common path stays as fast as possible. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* AUDIT: Fix task refcount leak in audit_filter_syscall()David Woodhouse2005-08-171-1/+2
| | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* AUDIT: Reduce contention in audit_serial()David Woodhouse2005-07-181-1/+3
| | | | | | | | ... by generating serial numbers only if an audit context is actually _used_, rather than doing so at syscall entry even when the context isn't necessarily marked auditable. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* AUDIT: Fix compile error in audit_filter_syscallDavid Woodhouse2005-07-141-1/+1
| | | | | | We didn't rename it to audit_tgid after all. Except once... Doh. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* AUDIT: Avoid scheduling in idle threadDavid Woodhouse2005-07-131-5/+8
| | | | | | | When we flush a pending syscall audit record due to audit_free(), we might be doing that in the context of the idle thread. So use GFP_ATOMIC Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* AUDIT: Exempt the whole auditd thread-group from auditingDavid Woodhouse2005-07-131-2/+2
| | | | | | and not just the one thread. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* AUDIT: Really don't audit auditd.David Woodhouse2005-07-021-2/+2
| | | | | | | | The pid in the audit context isn't always set up. Use tsk->pid when checking whether it's auditd in audit_filter_syscall(), instead of ctx->pid. Remove a band-aid which did the same elsewhere. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* AUDIT: Clean up user message filteringDavid Woodhouse2005-06-241-14/+42
| | | | | | | | Don't look up the task by its pid and then use the syscall filtering helper. Just implement our own filter helper which operates solely on the information in the netlink_skb_parms. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* AUDIT: Return correct result from audit_filter_rules()David Woodhouse2005-06-241-1/+1
| | | | | | | | | | When the task refcounting was added to audit_filter_rules() it became more of a problem that this function was violating the 'only one return from each function' rule. In fixing it to use a variable to store 'ret' I stupidly neglected to actually change the 'return 1;' at the end. This makes it not work very well. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* AUDIT: No really, we don't want to audit auditd.David Woodhouse2005-06-231-1/+1
| | | | Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* AUDIT: Wait for backlog to clear when generating messages.David Woodhouse2005-06-221-7/+7
| | | | | | | | | | | | | Add a gfp_mask to audit_log_start() and audit_log(), to reduce the amount of GFP_ATOMIC allocation -- most of it doesn't need to be GFP_ATOMIC. Also if the mask includes __GFP_WAIT, then wait up to 60 seconds for the auditd backlog to clear instead of immediately abandoning the message. The timeout should probably be made configurable, but for now it'll suffice that it only happens if auditd is actually running. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* AUDIT: Optimise the audit-disabled case for discarding user messagesDavid Woodhouse2005-06-221-5/+16
| | | | | | | Also exempt USER_AVC message from being discarded to preserve existing behaviour for SE Linux. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
* AUDIT: Spawn kernel thread to list filter rules.David Woodhouse2005-06-211-8/+45
| | | | | | | | | | If we have enough rules to fill the netlink buffer space, it'll deadlock because auditctl isn't ever actually going to read from the socket until we return, and we aren't going to return until it reads... so we spawn a kernel thread to spew out the list and then exit. Signed-off-by: David Woodhouse <dwmw2@infradead.org>
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