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741b6cf8a5
freebsd-dev/sys/kern
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Konstantin Belousov 741b6cf8a5 Another problem caused by the knlist_cleardel() potentially dropping 
PIPE_MTX().

Since the pipe_present is cleared before (potentially) sleeping, the
second thread may enter the pipeclose() for the reciprocal pipe end.
The test at the end of the pipeclose() for the pipe_present == 0 would
succeed, allowing the second thread to free the pipe memory. First
threads then accesses the freed memory after being woken up.

Properly track the closing state of the pipe in the pipe_present.
Introduce the intermediate state that marks the pipe as mostly
dismantled but might be sleeping waiting for the knote list to be
cleared. Free the pipe pair memory only when both ends pass that point.

Debugging help and tested by:	pho
Discussed with:	jmg
MFC after:	2 weeks
2008-05-23 11:14:03 +00:00
..
bus_if.m Implement a BUS_BIND_INTR() method in the bus interface to bind an IRQ 2008-03-20 21:24:32 +00:00
clock_if.m
cpufreq_if.m
device_if.m
genassym.sh refactor code so it can run in a chroot without having to have /dev/mounted 2008-01-18 17:02:14 +00:00
imgact_aout.c VOP_LOCK1() (and so VOP_LOCK()) and VOP_UNLOCK() are only used in 2008-01-13 14:44:15 +00:00
imgact_elf32.c
imgact_elf64.c
imgact_elf.c Go back to using the process command name (p_comm) for the file name and 2008-05-15 03:07:34 +00:00
imgact_gzip.c VOP_LOCK1() (and so VOP_LOCK()) and VOP_UNLOCK() are only used in 2008-01-13 14:44:15 +00:00
imgact_shell.c
inflate.c
init_main.c In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +00:00
init_sysent.c Add code to allow the system to handle multiple routing tables. 2008-05-09 23:03:00 +00:00
kern_acct.c VOP_LOCK1() (and so VOP_LOCK()) and VOP_UNLOCK() are only used in 2008-01-13 14:44:15 +00:00
kern_alq.c In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +00:00
kern_clock.c Implement per-cpu callout threads, wheels, and locks. 2008-04-02 11:20:30 +00:00
kern_condvar.c - Pass the priority argument from *sleep() into sleepq and down into 2008-03-12 06:31:06 +00:00
kern_conf.c Implement the per-open file data for the cdev. 2008-05-21 09:31:44 +00:00
kern_context.c Further system call comment cleanup: 2007-03-05 13:10:58 +00:00
kern_cpu.c Fix a few edge cases with error handling in cpufreq(4)'s CPUFREQ_GET() 2008-05-05 19:13:52 +00:00
kern_cpuset.c - Add the interrupt vector number to intr_event_create so MI code can 2008-04-11 03:26:41 +00:00
kern_ctf.c Add the CTF source file which gets shared with link_elf.c and link_elf_obj.c. 2008-05-23 03:04:27 +00:00
kern_descrip.c Implement the per-open file data for the cdev. 2008-05-21 09:31:44 +00:00
kern_dtrace.c Add support for the DTrace struct proc and struct thread extended 2008-05-18 19:43:52 +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 Kqueue_scan() may sleep when encountered the influx knotes. On the other 2008-05-10 11:37:05 +00:00
kern_exec.c Implement the fexecve(2) syscall. 2008-03-31 12:05:52 +00:00
kern_exit.c In abort2(2): Accept a NULL arg pointer if nargs == 0 2008-03-22 16:32:52 +00:00
kern_fork.c Fix the leak of the vmspace on the fork when the process limits 2008-03-20 15:24:49 +00:00
kern_idle.c In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +00:00
kern_intr.c - Make SCHED_STATS more generic by adding a wrapper to create the 2008-04-17 04:20:10 +00:00
kern_jail.c Instead of rolling our own jail number allocation procedure, use 2008-04-11 21:31:15 +00:00
kern_kthread.c Document the kproc_kthread_add() call 2008-04-29 22:43:15 +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 This patch adds a new ktrace(2) record type, KTR_STRUCT, whose payload 2008-02-23 01:01:49 +00:00
kern_linker.c Add the ctf_get function and update the args to linker_file_function_listall. 2008-05-23 07:08:59 +00:00
kern_lock.c Use a "rel" memory barrier for disowning the lock as it cames from an 2008-04-13 01:21:56 +00:00
kern_lockf.c When blocking on an F_FLOCK style lock request which is upgrading a 2008-05-09 10:34:23 +00:00
kern_malloc.c Add support for the DTrace malloc provider which can enable probes 2008-05-23 00:43:36 +00:00
kern_mbuf.c Reintroduce UMA_SLAB_KMAP; however, change its spelling to 2008-04-04 18:41:12 +00:00
kern_mib.c Make sysctl_kern_arnd return a random buffer instead of a random long, 2008-02-17 16:44:48 +00:00
kern_module.c In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +00:00
kern_mtxpool.c Universally adopt most conventional spelling of acquire. 2007-05-27 20:50:23 +00:00
kern_mutex.c Add KASSERT()'s to catch attempts to recurse on spin mutexes that aren't 2008-02-13 23:39:05 +00:00
kern_ntptime.c In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +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 In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +00:00
kern_priv.c Add __FBSDID() tag. 2008-03-07 15:27:08 +00:00
kern_proc.c - Relax requirements for p_numthreads, p_threads, p_swtick, and p_nice from 2008-03-19 06:19:01 +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 Remove extra uihold() call that accidentally sneak in during perforce 2008-03-19 07:52:07 +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 - Add sysctls at debug.rwlock to control the behavior of the speculative 2008-04-04 10:00:46 +00:00
kern_sdt.c Add kernel support for the Statically Defined Trace provider. 2008-05-18 19:32:36 +00:00
kern_sema.c
kern_shutdown.c In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +00:00
kern_sig.c - Add a new td flag TDF_NEEDSUSPCHK that is set whenever a thread needs 2008-03-21 08:23:25 +00:00
kern_subr.c - Make SCHED_STATS more generic by adding a wrapper to create the 2008-04-17 04:20:10 +00:00
kern_switch.c fix typo in runz_fuzz 2008-05-12 06:42:06 +00:00
kern_sx.c - Embed the recursion counter for any locking primitive directly in the 2008-05-15 20:10:06 +00:00
kern_synch.c - Make SCHED_STATS more generic by adding a wrapper to create the 2008-04-17 04:20:10 +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 In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +00:00
kern_thr.c Fix compiling problem. 2008-04-29 05:48:05 +00:00
kern_thread.c - Make SCHED_STATS more generic by adding a wrapper to create the 2008-04-17 04:20:10 +00:00
kern_time.c Make sure reading td_runtime in critical section since thread may be 2008-01-18 13:00:28 +00:00
kern_timeout.c - Correct a major error introduced in the per-cpu timeout commit. Sleep 2008-04-06 11:08:49 +00:00
kern_umtx.c Introduce command UMTX_OP_WAIT_UINT_PRIVATE and UMTX_OP_WAKE_PRIVATE 2008-04-29 03:48:48 +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 Add hooks for the Compact C Type Format (CTF) data to be attached to 2008-05-23 00:49:39 +00:00
link_elf.c Add hooks for the Compact C Type Format (CTF) data to be attached to 2008-05-23 00:49:39 +00:00
linker_if.m Add the ctf_get method. 2008-05-23 04:06:49 +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 Generate another function for the DTrace syscall provider to specify 2008-03-27 01:53:44 +00:00
md4c.c
md5c.c
p1003_1b.c Remove kernel support for M:N threading. 2008-03-12 10:12:01 +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 - Add an integer argument to idle to indicate how likely we are to wake 2008-04-25 05:18:50 +00:00
sched_ule.c - Add an integer argument to idle to indicate how likely we are to wake 2008-04-25 05:18:50 +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 In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +00:00
subr_blist.c add malloc flag to blist so that it can be used in ithread context 2008-05-05 19:48:54 +00:00
subr_bus.c devctl_process_running(): Check for devsoftc.inuse == 1 instead of 2008-05-18 13:55:51 +00:00
subr_clist.c In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +00:00
subr_clock.c Now that all platforms use genclock, shuffle things around slightly 2008-04-22 19:38:30 +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 In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +00:00
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 Do image loading in a context known to have a root directory: 2008-04-09 19:07:48 +00:00
subr_hints.c
subr_kdb.c Expand kdb_alt_break a little, most commonly used with the option 2008-05-04 23:29:38 +00:00
subr_kobj.c
subr_lock.c - Embed the recursion counter for any locking primitive directly in the 2008-05-15 20:10:06 +00:00
subr_log.c In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +00:00
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 Replaced the misleading uses of a historical artefact M_TRYWAIT with M_WAIT. 2008-03-25 09:39:02 +00:00
subr_module.c
subr_msgbuf.c
subr_param.c - Export HZ value via kern.hz sysctl (this is the same name as for the 2008-05-09 07:42:02 +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 In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +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 Now that all platforms use genclock, shuffle things around slightly 2008-04-22 19:38:30 +00:00
subr_sbuf.c
subr_scanf.c
subr_sleepqueue.c - Make SCHED_STATS more generic by adding a wrapper to create the 2008-04-17 04:20:10 +00:00
subr_smp.c Allow a rendezvous with just a specified CPU too. 2008-05-23 04:05:26 +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 Use kthread_exit() to terminate a taskqueue thread rather than kproc_exit() 2008-04-11 17:35:54 +00:00
subr_trap.c - Make SCHED_STATS more generic by adding a wrapper to create the 2008-04-17 04:20:10 +00:00
subr_turnstile.c - Make SCHED_STATS more generic by adding a wrapper to create the 2008-04-17 04:20:10 +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 - Embed the recursion counter for any locking primitive directly in the 2008-05-15 20:10:06 +00:00
sys_generic.c - Remove stale comment. 2008-03-19 07:33:16 +00:00
sys_pipe.c Another problem caused by the knlist_cleardel() potentially dropping 2008-05-23 11:14:03 +00:00
sys_process.c - Relax requirements for p_numthreads, p_threads, p_swtick, and p_nice from 2008-03-19 06:19:01 +00:00
sys_socket.c Add code to allow the system to handle multiple routing tables. 2008-05-09 23:03:00 +00:00
syscalls.c Add code to allow the system to handle multiple routing tables. 2008-05-09 23:03:00 +00:00
syscalls.master Add code to allow the system to handle multiple routing tables. 2008-05-09 23:03:00 +00:00
systrace_args.c Add code to allow the system to handle multiple routing tables. 2008-05-09 23:03:00 +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 Make sure we restrict Linux only IPC calls from being executed 2008-02-12 20:55:03 +00:00
tty_compat.c
tty_conf.c
tty_cons.c The "free-lance" timer in the i8254 is only used for the speaker 2008-03-26 20:09:21 +00:00
tty_pts.c In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +00:00
tty_pty.c In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +00:00
tty_subr.c In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +00:00
tty_tty.c In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +00:00
tty.c Implement POSIX function tcgetsid() which returns session id. 2008-04-15 08:33:32 +00:00
uipc_accf.c
uipc_cow.c Give MEXTADD() another argument to make both void pointers to the 2008-02-01 19:36:27 +00:00
uipc_debug.c Add missing sb_sndptr* fields to db_print_sockbuf(). 2008-01-03 15:19:31 +00:00
uipc_domain.c In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +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 Attempt to make the print types more friendly to other architectures. 2008-04-30 20:00:30 +00:00
uipc_mqueue.c - Use vget() to lock the vnode rather than refing without a lock and 2008-03-29 23:30:40 +00:00
uipc_sem.c Attempt to improve convergence of POSIX semaphore code with style(9). 2008-05-16 18:10:07 +00:00
uipc_shm.c Initialize the vm object's flags to include OBJ_NOSPLIT, just like the 2008-04-13 21:08:34 +00:00
uipc_sockbuf.c Update the kernel to count the number of mbufs and clusters 2008-05-15 20:18:44 +00:00
uipc_socket.c Add code to allow the system to handle multiple routing tables. 2008-05-09 23:03:00 +00:00
uipc_syscalls.c When sendto(2) is called with an explicit destination address 2008-05-22 07:18:54 +00:00
uipc_usrreq.c Move unlock of global UNIX domain socket lock slightly lower in 2008-01-18 19:16:03 +00:00
vfs_acl.c Add the support for the AT_FDCWD and fd-relative name lookups to the 2008-03-31 12:01:21 +00:00
vfs_aio.c Use FEATURE() macro to advertise aio availability. 2008-02-01 11:59:14 +00:00
vfs_bio.c b_waiters cannot be adequately protected by the interlock because it is 2008-03-28 12:30:12 +00:00
vfs_cache.c - Use LK_TYPE_MASK where needed. Actually after sys/sys/lockmgr.h:1.69 it is 2008-04-09 20:19:55 +00:00
vfs_cluster.c - Complete part of the unfinished bufobj work by consistently using 2008-03-22 09:15:16 +00:00
vfs_default.c Move the head of byte-level advisory lock list from the 2008-04-16 11:33:32 +00:00
vfs_export.c Add code to allow the system to handle multiple routing tables. 2008-05-09 23:03:00 +00:00
vfs_extattr.c Add the support for the AT_FDCWD and fd-relative name lookups to the 2008-03-31 12:01:21 +00:00
vfs_hash.c In keeping with style(9)'s recommendations on macros, use a ';' 2008-03-16 10:58:09 +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 Implement the linux syscalls 2008-04-08 09:45:49 +00:00
vfs_mount.c Lock filedesc exclusively when modifying fd_[cr]dir. 2008-04-29 21:40:11 +00:00
vfs_subr.c Be more friendly for DDB pager. 2008-05-18 21:08:12 +00:00
vfs_syscalls.c vfs_syscalls.c 1.452 mistakenly swapped the behavior of chown() and lchown(). 2008-04-07 00:29:32 +00:00
vfs_vnops.c Add the support for the O_EXEC open(2) mode, as specified by the 2008-03-31 11:57:18 +00:00
vnode_if.src Add the new kernel-mode NFS Lock Manager. To use it instead of the 2008-03-26 15:23:12 +00:00