Konstantin Belousov 6690381ef1 The dependency chain for priority-inheritance mutexes could be ...

subverted by userspace into cycle.  Both umtx_propagate_priority() and
umtx_repropagate_priority() would then loop infinitely, owning the
spinlock.

Check for the cycle using standard Floyd' algorithm before doing the
pass in the affected functions.  Add simple check for condition of
tricking the thread into a wait for itself, which could be easily
simulated by usermode without race.

Found by:	Eric van Gyzen <eric@vangyzen.net>
In collaboration with:	Eric van Gyzen <eric@vangyzen.net>
Tested by:	pho
MFC after:	1 week

2015-01-31 12:27:40 +00:00

..

bus_if.m

Add a bus method to fetch the VM domain for the given device/bus.

2014-10-09 05:33:25 +00:00

capabilities.conf

Add futimens and utimensat system calls.

2015-01-23 21:07:08 +00:00

clock_if.m

…

cpufreq_if.m

…

device_if.m

Change the default method for device_quiesce() to return 0 instead of

2015-01-08 21:46:28 +00:00

genassym.sh

…

imgact_aout.c

…

imgact_binmisc.c

Allow multiple image activators to run on the same execution by changing

2014-09-04 21:31:25 +00:00

imgact_elf32.c

…

imgact_elf64.c

…

imgact_elf.c

The size value should be asserted when it is known.

2014-11-22 18:15:02 +00:00

imgact_gzip.c

Add a mmap flag (MAP_32BIT) on 64-bit platforms to request that a mapping use

2013-09-09 18:11:59 +00:00

imgact_shell.c

Allow multiple image activators to run on the same execution by changing

2014-09-04 21:31:25 +00:00

inflate.c

…

init_main.c

Revert for r277213:

2015-01-22 11:12:42 +00:00

init_sysent.c

Run make sysent.

2015-01-23 21:08:24 +00:00

kern_acct.c

acct: create a special plimit object and set it for exiting processes

2013-06-30 19:08:06 +00:00

kern_alq.c

Prevent alq from panic when the invalid alq_file path specified.

2014-04-05 16:54:47 +00:00

kern_clock.c

The process spin lock currently has the following distinct uses:

2014-11-26 14:10:00 +00:00

kern_clocksource.c

On some Intel CPUs with a P-state but not C-state invariant TSC the TSC

2015-01-05 20:44:44 +00:00

kern_condvar.c

Revert for r277213:

2015-01-22 11:12:42 +00:00

kern_conf.c

Stop enforcing additional reference on all cdevs, which was introduced

2015-01-19 17:36:52 +00:00

kern_cons.c

Rework r276532 a bit. Always avoid recursing into the console drivers

2015-01-03 17:21:19 +00:00

kern_context.c

…

kern_cpu.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

kern_cpuset.c

Reject attempts to read the cpuset mask of a negative domain ID.

2015-01-08 19:11:14 +00:00

kern_ctf.c

…

kern_descrip.c

filedesc: avoid spurious copying of capabilities in fget_unlocked

2015-01-21 18:32:53 +00:00

kern_dtrace.c

Commit the rest of the changes that were intended to be part of r266826.

2014-05-29 01:42:22 +00:00

kern_dump.c

Factor out duplicated code from dumpsys() on each architecture into generic

2015-01-07 01:01:39 +00:00

kern_environment.c

Test if 'env' is NULL before doing memset() and strlen(),

2014-10-23 18:23:50 +00:00

kern_et.c

Fix build breakage. Apparently all ARM configs build kern_et.c, but only a

2014-04-02 17:34:17 +00:00

kern_event.c

prevent doing filter ops locking for staticly compiled filter ops...

2014-11-16 01:18:41 +00:00

kern_exec.c

Add procctl(2) PROC_TRACE_CTL command to enable or disable debugger

2015-01-18 15:13:11 +00:00

kern_exit.c

Add a facility for non-init process to declare itself the reaper of

2014-12-15 12:01:42 +00:00

kern_fail.c

…

kern_ffclock.c

The SYSCTL data pointers can come from userspace and must not be

2014-10-28 12:00:39 +00:00

kern_fork.c

Add procctl(2) PROC_TRACE_CTL command to enable or disable debugger

2015-01-18 15:13:11 +00:00

kern_gzio.c

…

kern_hhook.c

Move hhook's per-vnet initialisation to an earlier SYSINIT SI_SUB stage to

2013-06-15 10:08:34 +00:00

kern_idle.c

…

kern_intr.c

This is the much-discussed major upgrade to the random(4) device, known to you all as /dev/random.

2014-10-30 21:21:53 +00:00

kern_jail.c

Add allow.mount.fdescfs jail flag.

2015-01-28 21:08:09 +00:00

kern_khelp.c

Cleanup and simplification in khelp_{register|deregister}_helper(). No

2013-06-15 06:45:17 +00:00

kern_kthread.c

Do not use potentially stale thread in kthread_add()

2013-08-17 17:02:43 +00:00

kern_ktr.c

Drop KTR records when we're in the debugger so that the debugger isn't

2014-07-02 22:13:07 +00:00

kern_ktrace.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

kern_linker.c

Const poison in a few places to ensure we don't modify things

2014-12-03 22:14:13 +00:00

kern_lock.c

Revert for r277213:

2015-01-22 11:12:42 +00:00

kern_lockf.c

Improve style and fix a possible use-after-free case introduced in r268384

2015-01-10 06:48:35 +00:00

kern_lockstat.c

- For kernel compiled only with KDTRACE_HOOKS and not any lock debugging

2013-11-25 07:38:45 +00:00

kern_loginclass.c

Simplify sys_getloginclass.

2014-10-28 04:59:33 +00:00

kern_malloc.c

svn revisions r269964 and r269963 seemed to have impaired small memory

2014-09-22 05:07:22 +00:00

kern_mbuf.c

Test for absence of M_NOFREE before attempting to purge the mbuf's tags.

2014-09-30 23:16:26 +00:00

kern_mib.c

Fix multiple incorrect SYSCTL arguments in the kernel:

2014-10-21 07:31:21 +00:00

kern_module.c

…

kern_mtxpool.c

Garbage collect mtxpool_lockbuilder, the mutex pool historically used

2014-05-02 07:57:40 +00:00

kern_mutex.c

Add _NEW flag to mtx(9), sx(9), rmlock(9) and rwlock(9).

2014-12-13 21:00:10 +00:00

kern_ntptime.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

kern_osd.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

kern_physio.c

Fix some issues in change 254760 pointed out by Bruce Evans:

2013-08-29 16:41:40 +00:00

kern_pmc.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

kern_poll.c

- Remove empty wrappers ether_poll_[de]register_drv(). [1]

2014-09-28 14:05:18 +00:00

kern_priv.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

kern_proc.c

Fix gcc build.

2014-12-14 08:43:13 +00:00

kern_procctl.c

Add procctl(2) PROC_TRACE_CTL command to enable or disable debugger

2015-01-18 15:13:11 +00:00

kern_prot.c

Add procctl(2) PROC_TRACE_CTL command to enable or disable debugger

2015-01-18 15:13:11 +00:00

kern_racct.c

The process spin lock currently has the following distinct uses:

2014-11-26 14:10:00 +00:00

kern_rangelock.c

Change the queue of locks in kern_rangelock.c from holding lock requests in

2013-08-15 20:19:17 +00:00

kern_rctl.c

…

kern_resource.c

The process spin lock currently has the following distinct uses:

2014-11-26 14:10:00 +00:00

kern_rmlock.c

Add _NEW flag to mtx(9), sx(9), rmlock(9) and rwlock(9).

2014-12-13 21:00:10 +00:00

kern_rwlock.c

Add _NEW flag to mtx(9), sx(9), rmlock(9) and rwlock(9).

2014-12-13 21:00:10 +00:00

kern_sdt.c

Print a backtrace if the SDT(9) stub gets called so that there's at least

2014-02-22 01:41:45 +00:00

kern_sema.c

…

kern_sharedpage.c

Remove the deprecated VM_ALLOC_RETRY flag for the vm_page_grab(9).

2013-08-22 07:39:53 +00:00

kern_shutdown.c

Factor out duplicated code from dumpsys() on each architecture into generic

2015-01-07 01:01:39 +00:00

kern_sig.c

Add procctl(2) PROC_TRACE_CTL command to enable or disable debugger

2015-01-18 15:13:11 +00:00

kern_switch.c

Revert for r277213:

2015-01-22 11:12:42 +00:00

kern_sx.c

Add _NEW flag to mtx(9), sx(9), rmlock(9) and rwlock(9).

2014-12-13 21:00:10 +00:00

kern_synch.c

Revert for r277213:

2015-01-22 11:12:42 +00:00

kern_syscalls.c

Fix up module unload for syscall_module_handler consumers.

2014-11-01 22:36:40 +00:00

kern_sysctl.c

sysctl: don't modify oid_running for static nodes

2014-12-28 19:24:01 +00:00

kern_tc.c

Update the vdso timehands only via tc_windup().

2015-01-20 03:54:30 +00:00

kern_thr.c

Clean up confusing comment. Move it to the place of code which is

2014-11-03 11:29:08 +00:00

kern_thread.c

Revert for r277213:

2015-01-22 11:12:42 +00:00

kern_time.c

Fix an off by one in ppsratecheck(). If you asked for N=1 you'd get one,

2015-01-11 20:48:29 +00:00

kern_timeout.c

Call WITNESS_WARN() in callout_drain() to check whether any locks are

2015-01-26 04:04:57 +00:00

kern_umtx.c

The dependency chain for priority-inheritance mutexes could be

2015-01-31 12:27:40 +00:00

kern_uuid.c

Fix a bug in be_uuid_dec(); it called le16dec() instead of be16dec(),

2014-02-13 22:24:36 +00:00

kern_xxx.c

…

ksched.c

…

link_elf_obj.c

Fully support constructors for the purpose of code coverage analysis.

2014-10-20 17:04:03 +00:00

link_elf.c

Fully support constructors for the purpose of code coverage analysis.

2014-10-20 17:04:03 +00:00

linker_if.m

…

Make.tags.inc

Remove AppleTalk support.

2014-03-14 06:29:43 +00:00

Makefile

…

makesyscalls.sh

Fix syscalls that can be loaded as kernel modules - they were not given

2013-12-15 23:19:42 +00:00

md4c.c

…

md5c.c

…

p1003_1b.c

…

posix4_mib.c

…

sched_4bsd.c

Restore pre-r239157 handling of sched_yield(), when thread time slice was

2014-08-23 17:31:56 +00:00

sched_ule.c

Update the ULE scheduler + thread and kinfo structs to use int for cpuid

2014-10-18 19:36:11 +00:00

serdev_if.m

…

stack_protector.c

…

subr_acl_nfs4.c

…

subr_acl_posix1e.c

…

subr_autoconf.c

…

subr_blist.c

Remove reference to the rlist code from comments, and fix a typo visible

2013-02-05 20:08:33 +00:00

subr_bufring.c

…

subr_bus_dma.c

Add bus_dmamap_load_ma() function to load map with the array of

2013-10-27 21:39:16 +00:00

subr_bus.c

Trim trailing whitespace.

2015-01-05 20:50:44 +00:00

subr_busdma_bufalloc.c

Replace kernel virtual address space allocation with vmem. This provides

2013-08-07 06:21:20 +00:00

subr_capability.c

Remove duplicated includes.

2014-06-26 13:57:44 +00:00

subr_clock.c

For architectures where time_t is wide enough, in particular, 64bit

2014-12-12 09:37:18 +00:00

subr_counter.c

Create two public UMA_ZONE_PCPU zones: 64 bit sized and pointer sized.

2014-02-10 19:59:46 +00:00

subr_devstat.c

Fix multiple incorrect SYSCTL arguments in the kernel:

2014-10-21 07:31:21 +00:00

subr_disk.c

…

subr_dummy_vdso_tc.c

Update the vdso timehands only via tc_windup().

2015-01-20 03:54:30 +00:00

subr_eventhandler.c

…

subr_fattime.c

Where appropriate, use the modern terms for the one true time base

2014-12-21 05:07:11 +00:00

subr_firmware.c

…

subr_hash.c

…

subr_hints.c

Follow up to r225617. In order to maximize the re-usability of kernel code

2014-10-16 18:04:43 +00:00

subr_kdb.c

Fix multiple incorrect SYSCTL arguments in the kernel:

2014-10-21 07:31:21 +00:00

subr_kobj.c

…

subr_lock.c

Add _NEW flag to mtx(9), sx(9), rmlock(9) and rwlock(9).

2014-12-13 21:00:10 +00:00

subr_log.c

MFcalloutng (r244255 by mav, with minor changes):

2013-03-04 16:07:55 +00:00

subr_mbpool.c

All mbuf external free functions never fail, so let them be void.

2014-07-11 13:58:48 +00:00

subr_mchain.c

Mechanically substitute flags from historic mbuf allocator with

2012-12-05 08:04:20 +00:00

subr_module.c

Turns out, this isn't only called from i386...

2014-12-30 02:39:47 +00:00

subr_msgbuf.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

subr_param.c

Rework virtual machine hypervisor detection.

2014-10-28 19:17:44 +00:00

subr_pcpu.c

Create two public UMA_ZONE_PCPU zones: 64 bit sized and pointer sized.

2014-02-10 19:59:46 +00:00

subr_pctrie.c

- Add a new general purpose path-compressed radix trie which can be used

2013-05-12 04:05:01 +00:00

subr_power.c

…

subr_prf.c

Fix usage example in kvprintf(9) and its copy in libstand(3): trailing '\n'

2015-01-23 07:30:57 +00:00

subr_prof.c

The process spin lock currently has the following distinct uses:

2014-11-26 14:10:00 +00:00

subr_rman.c

Nuke the never-used RF_TIMESHARE feature, reducing the complexity of the

2014-07-16 22:18:19 +00:00

subr_rtc.c

…

subr_sbuf.c

Unbreak the ABI by reverting r268494 until the compat shims are provided

2014-07-28 07:20:22 +00:00

subr_scanf.c

…

subr_sfbuf.c

Move KASSERT into locked region.

2014-08-11 15:06:07 +00:00

subr_sglist.c

Fix a couple of panics when detaching from a cxgbe/cxl interface that was

2015-01-26 16:26:28 +00:00

subr_sleepqueue.c

Revert for r277213:

2015-01-22 11:12:42 +00:00

subr_smp.c

Pull in r267961 and r267973 again. Fix for issues reported will follow.

2014-06-28 03:56:17 +00:00

subr_stack.c

…

subr_syscall.c

Thread waiting for the vfork(2)-ed child to exec or exit, must allow

2014-12-08 16:18:05 +00:00

subr_taskqueue.c

Prevent live-lock and access of destroyed data in taskqueue_drain_all().

2015-01-04 19:55:44 +00:00

subr_terminal.c

vt(4): Adjust the cursor position after changing the window size

2014-11-01 17:05:15 +00:00

subr_trap.c

Revert r263475: TDP_DEVMEMIO no longer needed, since amd64 /dev/kmem

2015-01-12 08:58:07 +00:00

subr_turnstile.c

dtrace sdt: remove the ugly sname parameter of SDT_PROBE_DEFINE

2013-11-26 08:46:27 +00:00

subr_uio.c

Add type qualifier volatile to the base (userspace) address argument

2014-10-31 17:43:21 +00:00

subr_unit.c

Move the definition of the struct unrhdr into a separate header file,

2013-08-30 07:37:45 +00:00

subr_vmem.c

Do not set M_BESTFIT if a strategy has already been provided. This

2014-04-16 21:39:43 +00:00

subr_witness.c

Fix a typo from r189544, which replaced unp_global_rwlock with unp_list_lock

2014-10-20 20:21:40 +00:00

sys_capability.c

Use crcopysafe(9) to make a copy of a process' credential struct. crcopy(9)

2015-01-05 23:07:22 +00:00

sys_generic.c

Style changes:

2014-11-28 09:32:07 +00:00

sys_pipe.c

Do not assert that the new pipepair mutex is not initialized. The

2015-01-21 16:32:54 +00:00

sys_procdesc.c

Add a new fo_fill_kinfo fileops method to add type-specific information to

2014-09-22 16:20:47 +00:00

sys_process.c

Add a facility for non-init process to declare itself the reaper of

2014-12-15 12:01:42 +00:00

sys_socket.c

In preparation of merging projects/sendfile, transform bare access to

2014-11-12 09:57:15 +00:00

syscalls.c

Run make sysent.

2015-01-23 21:08:24 +00:00

syscalls.master

Add futimens and utimensat system calls.

2015-01-23 21:07:08 +00:00

systrace_args.c

Run make sysent.

2015-01-23 21:08:24 +00:00

sysv_ipc.c

…

sysv_msg.c

Avoid dynamic syscall overhead for statically compiled modules.

2014-10-26 19:42:44 +00:00

sysv_sem.c

Avoid dynamic syscall overhead for statically compiled modules.

2014-10-26 19:42:44 +00:00

sysv_shm.c

Avoid dynamic syscall overhead for statically compiled modules.

2014-10-26 19:42:44 +00:00

tty_compat.c

…

tty_info.c

…

tty_inq.c

…

tty_outq.c

…

tty_pts.c

Implement FIODTYPE for master ptys.

2014-10-15 12:38:26 +00:00

tty_tty.c

…

tty_ttydisc.c

…

tty.c

Fix draining in ttydev_leave():

2014-10-09 02:30:38 +00:00

uipc_accf.c

The accept filter code is not specific to the FreeBSD IPv4 network stack,

2014-07-26 19:27:34 +00:00

uipc_debug.c

Merge from projects/sendfile:

2014-11-30 12:52:33 +00:00

uipc_domain.c

Merge from projects/sendfile: extend protocols API to support

2014-11-30 13:24:21 +00:00

uipc_mbuf2.c

Remove a 'This is dumb' comment that has been incorrect for at least a

2015-01-09 12:08:51 +00:00

uipc_mbuf.c

In order to support ongoing work to implement variable-size mbufs, and

2015-01-14 23:44:00 +00:00

uipc_mqueue.c

Avoid dynamic syscall overhead for statically compiled modules.

2014-10-26 19:42:44 +00:00

uipc_sem.c

Avoid dynamic syscall overhead for statically compiled modules.

2014-10-26 19:42:44 +00:00

uipc_shm.c

Add a new fo_fill_kinfo fileops method to add type-specific information to

2014-09-22 16:20:47 +00:00

uipc_sockbuf.c

In sbappend*() family of functions clear M_PROTO flags of incoming

2014-12-22 15:39:24 +00:00

uipc_socket.c

Revert r274494, r274712, r275955 and provide extra comments explaining

2014-12-20 22:12:04 +00:00

uipc_syscalls.c

Remove the no-at variants of the kern_xx() syscall helpers. E.g., we

2014-11-13 18:01:51 +00:00

uipc_usrreq.c

The VOP_LOOKUP() implementations for CREATE op do not put the name

2014-12-18 10:01:12 +00:00

vfs_acl.c

Replace some calls to fuword() by fueword() with proper error checking.

2014-10-28 15:28:20 +00:00

vfs_aio.c

Avoid dynamic syscall overhead for statically compiled modules.

2014-10-26 19:42:44 +00:00

vfs_bio.c

When getnewbuf_reuse_bp() is called to reclaim some (clean) buffer,

2014-12-08 16:42:34 +00:00

vfs_cache.c

Indeed, instead of hiding the kern___getcwd() bug by bogus cast

2015-01-04 10:34:02 +00:00

vfs_cluster.c

When allocating a pbuf for the cluster write, do not sleep waiting

2013-08-27 01:31:12 +00:00

vfs_default.c

Fix the comment introduced in r276192 so that it clearly

2014-12-25 14:44:04 +00:00

vfs_export.c

After the changes in r274118 make NOIP kernels compile by hiding an

2014-11-06 12:19:39 +00:00

vfs_extattr.c

Update kernel inclusions of capability.h to use capsicum.h instead; some

2014-03-16 10:55:57 +00:00

vfs_hash.c

Convert vfs hash lock from a mutex to an rwlock.

2014-12-30 21:40:45 +00:00

vfs_init.c

Rename sysctl_lock and _unlock to sysctl_xlock and _xunlock.

2014-10-21 19:02:26 +00:00

vfs_lookup.c

Fix two issues with lockmgr(9) LK_CAN_SHARE() test, which determines

2014-11-02 13:10:31 +00:00

vfs_mount.c

Do not call VFS_SYNC() before VFS_UNMOUNT() for forced unmount.

2014-12-09 10:00:47 +00:00

vfs_mountroot.c

Remove the no-at variants of the kern_xx() syscall helpers. E.g., we

2014-11-13 18:01:51 +00:00

vfs_subr.c

Change the default VFS timestamp precision from seconds to microseconds.

2015-01-25 19:56:45 +00:00

vfs_syscalls.c

Add futimens and utimensat system calls.

2015-01-23 21:07:08 +00:00

vfs_vnops.c

Add VN_OPEN_NAMECACHE flag for vn_open_cred(9), which requests that

2014-12-21 13:32:07 +00:00

vnode_if.src

Merge from projects/sendfile:

2014-11-23 12:01:52 +00:00