John Baldwin 39033470fe Close a race in the kern.ttys sysctl handler that resulted in panics in ...

dev2udev() when a tty was being detached concurrently with the sysctl
handler:
- Hold the 'tty_list_mutex' lock while we read all the fields out of the
  struct tty for copying out later.  Previously the pty(4) and pts(4)
  destroy routines could set t_dev to NULL, drop their reference on the
  tty and destroy the cdev while the sysctl handler was attempting to
  invoke dev2udev() on the cdev being destroyed.  This happened when the
  sysctl handler read the value of t_dev prior to it being set to NULL
  either due to it being stale or due to timing races.  By holding the
  list lock we guarantee that the destroy routines will block in ttyrel()
  in that case and not destroy the cdev until after we've copied all of our
  data.  We may see a NULL cdev pointer or we may see the previous value,
  but the previous value will no longer point to a destroyed cdev if we
  see it.
- Fix the ttyfree() routine used by tty device drivers in their detach
  methods to use ttyrel() on the tty so we don't leak them.  Also, fix it
  to use the same order of operations as pty/pts destruction (set t_dev
  NULL, ttyrel(), destroy_dev()) so it cooperates with the sysctl handler.

MFC after:	3 days
Tested by:	avatar

2008-01-08 04:53:28 +00:00

..

bus_if.m

o break newbus api: add a new argument of type driver_filter_t to

2007-02-23 12:19:07 +00:00

clock_if.m

…

cpufreq_if.m

…

device_if.m

…

genassym.sh

…

imgact_aout.c

Fix for the panic("vm_thread_new: kstack allocation failed") and

2007-11-05 11:36:16 +00:00

imgact_elf32.c

…

imgact_elf64.c

…

imgact_elf.c

Fall back to the binary-specified interpreter (ld-elf.so.1) if the

2008-01-05 08:35:56 +00:00

imgact_gzip.c

Fix for the panic("vm_thread_new: kstack allocation failed") and

2007-11-05 11:36:16 +00:00

imgact_shell.c

…

inflate.c

…

init_main.c

give thread0 the tid 100000 and bumpt the others to start at 100001

2007-12-22 04:56:48 +00:00

init_sysent.c

Regenerate.

2007-08-16 05:32:26 +00:00

kern_acct.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

kern_alq.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

kern_clock.c

Add a new 'why' argument to kdb_enter(), and a set of constants to use

2007-12-25 17:52:02 +00:00

kern_condvar.c

Commit 2/14 of sched_lock decomposition.

2007-06-04 23:50:56 +00:00

kern_conf.c

Apply a workaround for the unkillable jail problem where some devices created

2007-12-05 01:22:03 +00:00

kern_context.c

Further system call comment cleanup:

2007-03-05 13:10:58 +00:00

kern_cpu.c

If we're on an SMP kernel and there is more than 1 CPU, reject any attempts

2007-10-30 22:18:08 +00:00

kern_descrip.c

Make ftruncate a 'struct file' operation rather than a vnode operation.

2008-01-07 20:05:19 +00:00

kern_environment.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

kern_event.c

Make ftruncate a 'struct file' operation rather than a vnode operation.

2008-01-07 20:05:19 +00:00

kern_exec.c

Add the superpage reservation system. This is "part 2 of 2" of the

2007-12-29 19:53:04 +00:00

kern_exit.c

Introduce a way to make pure kernal threads.

2007-10-26 08:00:41 +00:00

kern_fork.c

When forking, the new thread deserves a name too. Don't just use the

2007-11-15 02:13:44 +00:00

kern_idle.c

rename the process to 'idle' and 'intr' as per jhb.

2007-10-27 00:52:26 +00:00

kern_intr.c

fix typo in code normally not compiled in.

2007-10-29 20:45:31 +00:00

kern_jail.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

kern_kse.c

Fix build.

2007-11-15 14:16:20 +00:00

kern_kthread.c

Acquire the process mutex and spin locks before calling thread_exit() in

2007-11-15 21:45:17 +00:00

kern_ktr.c

Remove slightly oddly placed suser() call from the KTR/ALQ setup sysctl:

2006-09-09 16:09:01 +00:00

kern_ktrace.c

A bunch more files that should probably print out a thread name

2007-11-14 06:51:33 +00:00

kern_linker.c

The kernel linker includes a number of utility functions to look up symbol

2007-12-01 19:24:28 +00:00

kern_lock.c

Trimm out now unused option LK_EXCLUPGRADE from the lockmgr namespace.

2007-12-28 00:38:13 +00:00

kern_lockf.c

Do not call free() while holding vnode interlock.

2007-08-07 09:04:50 +00:00

kern_malloc.c

Use vm_offset_t for kmembase and kmemlimit rather than char *, avoiding

2007-06-27 13:39:38 +00:00

kern_mbuf.c

- fix tab to space issue, hmm maybe I should use vi.

2007-12-15 23:14:53 +00:00

kern_mib.c

Actually declare the kern.features sysctl node.

2007-12-31 22:03:57 +00:00

kern_module.c

Move several data structure definitions out of freebsd32_misc.c and into

2007-12-06 23:11:27 +00:00

kern_mtxpool.c

Universally adopt most conventional spelling of acquire.

2007-05-27 20:50:23 +00:00

kern_mutex.c

- Re-implement lock profiling in such a way that it no longer breaks

2007-12-15 23:13:31 +00:00

kern_ntptime.c

Only require privilege to set the current time adjustment, not in order to

2007-06-14 18:37:58 +00:00

kern_physio.c

…

kern_pmc.c

Kernel and hwpmc(4) support for callchain capture.

2007-12-07 08:20:17 +00:00

kern_poll.c

Remove the now-unused NET_{LOCK,UNLOCK,ASSERT}_GIANT() macros, which

2007-08-06 14:26:03 +00:00

kern_priv.c

Continue kernel privilege cleanup for 7.0: unstaticize suser_enabled and

2007-07-02 14:03:29 +00:00

kern_proc.c

Return ESRCH when a kernel stack is queried on a process in execve() --

2007-12-27 22:44:01 +00:00

kern_prot.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

kern_resource.c

Fix LOR of thread lock and umtx's priority propagation mutex due

2007-12-11 08:25:36 +00:00

kern_rmlock.c

Expand lock class with the "virtual" function lc_assert which will offer

2007-11-18 14:43:53 +00:00

kern_rwlock.c

- Re-implement lock profiling in such a way that it no longer breaks

2007-12-15 23:13:31 +00:00

kern_sema.c

…

kern_shutdown.c

Add textdump(4) facility, which provides an alternative form of kernel

2007-12-26 11:32:33 +00:00

kern_sig.c

Be more exact with sigaction SA_SIGINFO handling.

2007-12-18 20:39:13 +00:00

kern_subr.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

kern_switch.c

generally we are interested in what thread did something as

2007-11-14 06:21:24 +00:00

kern_sx.c

- Re-implement lock profiling in such a way that it no longer breaks

2007-12-15 23:13:31 +00:00

kern_synch.c

A bunch more files that should probably print out a thread name

2007-11-14 06:51:33 +00:00

kern_syscalls.c

…

kern_sysctl.c

Add sysctl_rename_oid() to support device_set_unit() usage. Otherwise,

2007-11-30 21:29:08 +00:00

kern_tc.c

Note what is too {short,long}.

2008-01-02 18:48:27 +00:00

kern_thr.c

This time REALLY copy the name from the proc to the thread as a default.

2007-11-15 06:35:26 +00:00

kern_thread.c

give thread0 the tid 100000 and bumpt the others to start at 100001

2007-12-22 04:56:48 +00:00

kern_time.c

rufetch and calcru sometimes should be called atomically together.

2007-06-09 21:48:44 +00:00

kern_timeout.c

Cache the value of c_lock as it can change, in the struct,

2007-11-22 12:15:54 +00:00

kern_umtx.c

Check NULL pointer.

2007-12-17 08:09:37 +00:00

kern_uuid.c

Correct typo.

2007-04-23 12:53:00 +00:00

kern_xxx.c

Further system call comment cleanup:

2007-03-05 13:10:58 +00:00

ksched.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

link_elf_obj.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

link_elf.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

linker_if.m

Add a function to list symbols in a file and their values at the

2007-11-18 00:23:31 +00:00

Make.tags.inc

Remove netkey directory from cscope/TAGs generation and replace

2007-07-05 08:55:14 +00:00

Makefile

style.Makefile(5)

2007-12-14 21:30:51 +00:00

makesyscalls.sh

Add support for COMPAT6 syscalls.

2007-07-04 22:38:28 +00:00

md4c.c

…

md5c.c

…

p1003_1b.c

generally we are interested in what thread did something as

2007-11-14 06:21:24 +00:00

posix4_mib.c

Fix mispatch of includes list; allows my kernel to build successfully.

2006-11-12 03:34:03 +00:00

sched_4bsd.c

- Re-implement lock profiling in such a way that it no longer breaks

2007-12-15 23:13:31 +00:00

sched_ule.c

- Restore timeslicing code for all bit SCHED_FIFO priority classes.

2008-01-05 04:47:31 +00:00

serdev_if.m

…

subr_acl_posix1e.c

Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); in

2007-06-12 00:12:01 +00:00

subr_autoconf.c

…

subr_blist.c

…

subr_bus.c

When devclass_get_maxunit is passed a NULL, return -1 to indicate that

2007-12-19 22:05:07 +00:00

subr_clist.c

…

subr_clock.c

If clock_ct_to_ts fails to convert time time from the real time clock,

2007-07-23 09:42:32 +00:00

subr_devstat.c

…

subr_disk.c

Add a new I/O request - BIO_FLUSH, which basically tells providers below to

2006-10-31 21:11:21 +00:00

subr_eventhandler.c

…

subr_fattime.c

Better naming of fattime conversion functions, they do convert to timespec

2006-10-24 10:27:23 +00:00

subr_firmware.c

Cleanup and document the implementation of firmware(9) based on

2007-02-15 17:21:31 +00:00

subr_hints.c

…

subr_kdb.c

Add a new 'why' argument to kdb_enter(), and a set of constants to use

2007-12-25 17:52:02 +00:00

subr_kobj.c

…

subr_lock.c

Fix logic in skipcount handling (used to sample every 1/N lock operations

2008-01-08 01:11:40 +00:00

subr_log.c

…

subr_mbpool.c

Add parens around *free in *free++ in mbp_count() so that mbp_count()

2007-05-27 17:38:36 +00:00

subr_mchain.c

…

subr_module.c

…

subr_msgbuf.c

…

subr_param.c

Export maxswzone, maxbcache, maxtsiz, dfldsiz, maxdsiz, dflssiz, maxssiz,

2007-10-16 10:40:53 +00:00

subr_pcpu.c

generally we are interested in what thread did something as

2007-11-14 06:21:24 +00:00

subr_power.c

…

subr_prf.c

Instead of doing comparisons using the pcpu area to see if

2007-03-08 06:44:34 +00:00

subr_prof.c

Commit 14/14 of sched_lock decomposition.

2007-06-05 00:00:57 +00:00

subr_rman.c

Complete removal of restriction about overlaps to rman_manage_region:

2007-04-28 07:37:49 +00:00

subr_rtc.c

Use utc_offset() where applicable, and hide the internals of it

2006-10-02 18:23:37 +00:00

subr_sbuf.c

…

subr_scanf.c

…

subr_sleepqueue.c

A bunch more files that should probably print out a thread name

2007-11-14 06:51:33 +00:00

subr_smp.c

A few whitespace fixes.

2008-01-02 17:09:15 +00:00

subr_stack.c

When a symbol name can't be resolved, return "??" as the name, rather

2007-12-03 14:44:35 +00:00

subr_taskqueue.c

Rename the kthread_xxx (e.g. kthread_create()) calls

2007-10-20 23:23:23 +00:00

subr_trap.c

Kernel and hwpmc(4) support for callchain capture.

2007-12-07 08:20:17 +00:00

subr_turnstile.c

generally we are interested in what thread did something as

2007-11-14 06:21:24 +00:00

subr_unit.c

Since cdev mutex is after system map mutex in global lock order, free()

2007-07-04 06:56:58 +00:00

subr_witness.c

Add a new 'why' argument to kdb_enter(), and a set of constants to use

2007-12-25 17:52:02 +00:00

sys_generic.c

Make ftruncate a 'struct file' operation rather than a vnode operation.

2008-01-07 20:05:19 +00:00

sys_pipe.c

Make ftruncate a 'struct file' operation rather than a vnode operation.

2008-01-07 20:05:19 +00:00

sys_process.c

Use VM_FAULT_DIRTY to fault in pages for write access in

2007-11-08 19:35:36 +00:00

sys_socket.c

Make ftruncate a 'struct file' operation rather than a vnode operation.

2008-01-07 20:05:19 +00:00

syscalls.c

Regenerate.

2007-08-16 05:32:26 +00:00

syscalls.master

Put comments about syscalls by the correct ones, and use the correct syscall

2007-10-19 19:17:53 +00:00

systrace_args.c

Regenerate.

2007-08-16 05:32:26 +00:00

sysv_ipc.c

Eliminate now-unused SUSER_ALLOWJAIL arguments to priv_check_cred(); in

2007-06-12 00:12:01 +00:00

sysv_msg.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

sysv_sem.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

sysv_shm.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

tty_compat.c

…

tty_conf.c

…

tty_cons.c

Rewrite kern.console handling in sbuf(9). My intention is to leave

2007-12-25 21:17:34 +00:00

tty_pts.c

Fix bad function type passed to destroy_dev_sched_cb().

2007-07-05 05:54:47 +00:00

tty_pty.c

Bump up the number of ttys supported by pty(4) to 512 by making use of

2007-11-19 20:49:42 +00:00

tty_subr.c

…

tty_tty.c

Lock Giant and proctree lock around dereferencing p_session->s_ttyvp->v_rdev.

2007-07-03 17:46:37 +00:00

tty.c

Close a race in the kern.ttys sysctl handler that resulted in panics in

2008-01-08 04:53:28 +00:00

uipc_accf.c

…

uipc_cow.c

…

uipc_debug.c

Add missing sb_sndptr* fields to db_print_sockbuf().

2008-01-03 15:19:31 +00:00

uipc_domain.c

Remove the now-unused NET_{LOCK,UNLOCK,ASSERT}_GIANT() macros, which

2007-08-06 14:26:03 +00:00

uipc_mbuf2.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

uipc_mbuf.c

This patch adds an M_NOFREE flag which allows one to mark an mbuf as

2007-10-06 21:42:39 +00:00

uipc_mqueue.c

Make ftruncate a 'struct file' operation rather than a vnode operation.

2008-01-07 20:05:19 +00:00

uipc_sem.c

Free MAC label on a POSIX semaphore when the semaphore is freed.

2008-01-07 22:03:19 +00:00

uipc_sockbuf.c

Add SB_NOCOALESCE flag to disable socket buffer update in place

2007-12-17 10:02:01 +00:00

uipc_socket.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

uipc_syscalls.c

Remove explicit locking of struct file.

2007-12-30 01:42:15 +00:00

uipc_usrreq.c

- Place the fhold() in unp_internalize_fp to be more consistent with refs.

2008-01-01 01:46:42 +00:00

vfs_acl.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

vfs_aio.c

Rename the kthread_xxx (e.g. kthread_create()) calls

2007-10-20 23:23:23 +00:00

vfs_bio.c

Rather than not redirting the bp when we get ENXIO, only redirty it

2007-12-30 05:53:45 +00:00

vfs_cache.c

Remove remaining Giant acquisition around vn_fullpath1. This was missed

2007-11-22 21:26:25 +00:00

vfs_cluster.c

- Move rusage from being per-process in struct pstats to per-thread in

2007-06-01 01:12:45 +00:00

vfs_default.c

Since renaming of vop_lock to _vop_lock, pre- and post-condition

2007-05-18 13:02:13 +00:00

vfs_export.c

Move vnode-to-file-handle translation from vfs_vptofh to vop_vptofh method.

2007-02-15 22:08:35 +00:00

vfs_extattr.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

vfs_hash.c

Make insmntque() externally visibile and allow it to fail (e.g. during

2007-03-13 01:50:27 +00:00

vfs_init.c

Remove VFS_VPTOFH entirely. API is already broken and it is good time to

2007-02-16 17:32:41 +00:00

vfs_lookup.c

Merge first in a series of TrustedBSD MAC Framework KPI changes

2007-10-24 19:04:04 +00:00

vfs_mount.c

In vfs_scanopt(), make sure that the mount option value is not NULL

2007-12-31 23:44:53 +00:00

vfs_subr.c

In "show lockedvnods" DDB command, use db_printf() rather than printf()

2007-12-28 00:47:31 +00:00

vfs_syscalls.c

Make ftruncate a 'struct file' operation rather than a vnode operation.

2008-01-07 20:05:19 +00:00

vfs_vnops.c

Make ftruncate a 'struct file' operation rather than a vnode operation.

2008-01-07 20:05:19 +00:00

vnode_if.src

Revert UF_OPENING workaround for CURRENT.

2007-05-31 11:51:53 +00:00