d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
2851f51eb1
freebsd-nq/sys/kern
History
John Baldwin 2851f51eb1 Revert most of revision 1.235 and fix the problem a different way. We 
can't acquire an sx lock in ttyinfo() because ttyinfo() can be called
from interrupt handlers (such as atkbd_intr()).  Instead, go back to
locking the process group while we pick a thread to display information for
and hold that lock until after we drop sched_lock to make sure the
process doesn't exit out from under us.  sched_lock ensures that the
specific thread from that process doesn't go away.  To protect against
the process exiting after we drop the proc lock but before we dereference
it to lookup the pid and p_comm in the call to ttyprintf(), we now copy
the pid and p_comm to local variables while holding the proc lock.

This problem was found by the recently added TD_NO_SLEEPING assertions for
interrupt handlers.

Tested by:	emaste
MFC after:	1 week
2005-10-27 16:47:28 +00:00
..
bus_if.m /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
clock_if.m /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
cpufreq_if.m Introduce a new method, cpufreq_drv_type(), that returns the type of the 2005-02-18 00:23:36 +00:00
device_if.m /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
genassym.sh
imgact_aout.c - Neither of our image formats require Giant now that the vm and vfs have 2005-05-03 10:51:38 +00:00
imgact_elf32.c
imgact_elf64.c
imgact_elf.c Back out alpha/alpha/trap.c:1.124, osf1_ioctl.c:1.14, osf1_misc.c:1.57, 2005-09-28 07:03:03 +00:00
imgact_gzip.c - Change the vm_mmap() function to accept an objtype_t parameter specifying 2005-04-01 20:00:11 +00:00
imgact_shell.c Fix a panic which could occur parsing #!-lines in a shell-script. If the 2005-06-19 02:21:03 +00:00
inflate.c
init_main.c Remove mac_create_root_mount() and mpo_create_root_mount(), which 2005-09-19 13:59:57 +00:00
init_sysent.c Regen for POSIX timer syscalls. 2005-10-23 04:26:10 +00:00
kern_acct.c Pass 'curthread' into VFS_STATFS() from acctwatch(), rather than passing 2005-09-21 15:28:07 +00:00
kern_acl.c Implement new world order in VFS locking for ACLs. This will remove the 2005-09-17 22:01:14 +00:00
kern_alq.c Modify the alq(9) alq_open() API to accept a file creation mode, rather 2005-04-16 12:12:27 +00:00
kern_clock.c Reorganize the interrupt handling code a bit to make a few things cleaner 2005-10-25 19:48:48 +00:00
kern_condvar.c Refine the turnstile and sleep queue interfaces just a bit: 2004-10-12 18:36:20 +00:00
kern_conf.c Move the initialization of the devmtx into the mutex_init() function 2005-10-18 18:27:44 +00:00
kern_context.c
kern_cpu.c make saved cpu level stackable. 2005-10-03 06:57:29 +00:00
kern_descrip.c Use FILEDESC_UNLOCK(fdp) after FILE_UNLOCK(p), not before to avoid LOR. 2005-10-04 16:27:54 +00:00
kern_environment.c Reorder statements to avoid accessing unknown memory. 2005-09-26 14:14:55 +00:00
kern_event.c Add in kqueue support to LIO event notification and fix how it handled 2005-10-12 17:51:31 +00:00
kern_exec.c Make p_itimers as a pointer, so file sys/proc.h does not need to include 2005-10-23 12:19:08 +00:00
kern_exit.c - Fix leak of struct nlminfo on process exit. 2005-10-26 07:18:37 +00:00
kern_fork.c Fix the recent panics/LORs/hangs created by my kqueue commit by: 2005-07-01 16:28:32 +00:00
kern_idle.c Divorce critical sections from spinlocks. Critical sections as denoted by 2005-04-04 21:53:56 +00:00
kern_intr.c Add a swi_remove() function to teardown software interrupt handlers. For 2005-10-26 15:51:05 +00:00
kern_jail.c Push Giant down in jails. Pass the MPSAFE flag to NDINIT, and keep track 2005-09-28 00:30:56 +00:00
kern_kse.c 1. Change prototype of trapsignal and sendsig to use ksiginfo_t *, most 2005-10-14 12:43:47 +00:00
kern_kthread.c /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
kern_ktr.c - Add curthread to the state that ktr is saving. The extra information is 2005-06-10 23:21:29 +00:00
kern_ktrace.c Close another information leak in ktrace(2): one was able to find active 2005-06-24 12:05:24 +00:00
kern_linker.c Fix a bug in the kernel module runtime linker that made it impossible 2005-10-19 20:40:30 +00:00
kern_lock.c Include kdb.h so that kdb_active is declared regardless of KDB being 2005-10-02 10:03:51 +00:00
kern_lockf.c Print name of device instead of useless major/minor numbers. 2005-03-29 08:13:01 +00:00
kern_mac.c Standard Giant push down operations for the Mandatory Access Control (MAC) 2005-10-04 14:32:58 +00:00
kern_malloc.c Change format string for u_int64_t to %ju from %llu, in order to use the 2005-10-20 21:28:31 +00:00
kern_mbuf.c No longer maintain mbstat statistics for the mbuf allocator, UMA 2005-09-27 20:28:43 +00:00
kern_mib.c mp_ncpus is always (properly) initialized, even on UP kernels, so just use it. 2005-08-21 18:03:31 +00:00
kern_module.c Swap the arguments for CP so we copy the correct source and 2005-02-18 22:14:40 +00:00
kern_mtxpool.c Make a bunch of malloc types static. 2005-02-10 12:02:37 +00:00
kern_mutex.c Move the initialization of the devmtx into the mutex_init() function 2005-10-18 18:27:44 +00:00
kern_ntptime.c Explicitly acquire Giant around the ntp_gettime() and assert it in the 2005-05-28 14:34:41 +00:00
kern_physio.c /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
kern_pmc.c Fail the module loading process if the currently executing kernel 2005-07-30 09:02:42 +00:00
kern_poll.c - Don't pollute opt_global.h with DEVICE_POLLING and introduce 2005-10-05 10:09:17 +00:00
kern_proc.c Document in #ifdef notnow code the actions that proc_fini would need to 2005-10-24 20:15:23 +00:00
kern_prot.c Use the refcount API to manage the reference count for user credentials 2005-09-27 18:09:42 +00:00
kern_resource.c Use the reference count API to manage the reference counts for process 2005-09-27 18:07:05 +00:00
kern_sema.c /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
kern_shutdown.c Don't pretend to be thread0 when calling sync(). 2005-09-22 15:34:15 +00:00
kern_sig.c 1. Make ksiginfo_alloc and ksiginfo_free public. 2005-10-23 04:12:26 +00:00
kern_subr.c /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
kern_switch.c In adjustrunqueue(), add code to handle thread migrating case for 2005-08-03 01:23:45 +00:00
kern_sx.c /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
kern_synch.c Use low level constructs borrowed from interrupt threads to wait for 2005-05-23 23:01:53 +00:00
kern_syscalls.c Do a pass over all modules in the kernel and make them return EOPNOTSUPP 2004-07-15 08:26:07 +00:00
kern_sysctl.c Drop in a WITNESS_WARN into SYSCTL_IN to make sure that we are 2005-08-08 21:06:42 +00:00
kern_tc.c Start time_uptime with 1 instead of 0. 2005-09-19 22:16:31 +00:00
kern_thr.c do umtx_wake at userland thread exit address, so that others userland 2005-10-26 06:55:46 +00:00
kern_thread.c Make p_itimers as a pointer, so file sys/proc.h does not need to include 2005-10-23 12:19:08 +00:00
kern_time.c Don't touch last overrun if signal was already on queue. 2005-10-23 22:59:33 +00:00
kern_timeout.c Oops, missed adding the required include. 2005-09-15 20:20:36 +00:00
kern_umtx.c do umtx_wake at userland thread exit address, so that others userland 2005-10-26 06:55:46 +00:00
kern_uuid.c Add parse_uuid() that creates a binary representation of an UUID from 2005-10-07 13:37:10 +00:00
kern_xxx.c /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
ksched.c /* -> /*- for license, minor formatting changes 2005-01-07 02:29:27 +00:00
link_elf_obj.c Handle vm_map_wire()'s failure. 2005-08-28 05:38:40 +00:00
link_elf.c Add support for kernel modules with a single PT_LOAD section. 2005-10-17 23:21:55 +00:00
linker_if.m /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
Make.tags.inc
Makefile Add a 'sysent' target that depends on the various files built from 2005-07-13 20:50:17 +00:00
makesyscalls.sh Introduce a new field in the syscalls.master file format to hold the 2005-05-30 15:09:18 +00:00
md4c.c /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
md5c.c MD5Pad() should never have been exposed. 2005-02-10 12:20:42 +00:00
p1003_1b.c Actually commit the code for kern_sched_get_rr_interval(). 2005-03-31 22:54:48 +00:00
posix4_mib.c Back when VOP_* was introduced, we did not have new-style struct 2004-12-01 23:16:38 +00:00
sched_4bsd.c Move HWPMC_HOOKS into its own opt_hwpmc_hooks.h file. It doesn't merit 2005-06-24 00:16:57 +00:00
sched_ule.c Temporarily disable nice threshold detection code, as it can starve 2005-09-22 01:19:37 +00:00
subr_acl_posix1e.c Implement new world order in VFS locking for ACLs. This will remove the 2005-09-17 22:01:14 +00:00
subr_autoconf.c /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
subr_blist.c
subr_bus.c When data passed into devctl_notify is NULL, don't print (null). Instead 2005-10-04 22:25:14 +00:00
subr_clist.c /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
subr_clock.c /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
subr_devstat.c - Remove two mtx_asserts that can incorrectly trigger if 2005-05-03 10:58:05 +00:00
subr_disk.c - Fix insertions of bios which represent data earlier than anything else 2005-06-15 23:32:07 +00:00
subr_eventhandler.c eliminate potential null deref 2005-02-23 19:32:29 +00:00
subr_hints.c The resource_xxx routines in subr_hints.c are called before and after the 2005-07-31 10:46:55 +00:00
subr_kdb.c Commit something we found useful at work at one point. Add sysctls for 2005-10-26 22:40:07 +00:00
subr_kobj.c Export a routine, kobj_machdep_init(), that allows platforms 2005-08-07 02:20:35 +00:00
subr_log.c Use dynamic major number allocation. 2005-02-27 22:02:03 +00:00
subr_mbpool.c /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
subr_mchain.c Change API of mb_copy_t in libmchain so that netsmb can handle 2005-07-29 13:22:37 +00:00
subr_module.c
subr_msgbuf.c /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
subr_param.c Partially revert revision 1.66, which contained a change that did not 2005-10-14 19:15:10 +00:00
subr_pcpu.c Add "show allpcpu" to DDB, which prints the current CPU id followed by 2005-09-26 16:55:11 +00:00
subr_power.c
subr_prf.c Acquire Giant in uprintf() and tprintf() rather than asserting it. In 2005-09-26 08:02:24 +00:00
subr_prof.c netchild's mega-patch to isolate compiler dependencies into a central 2005-03-02 21:33:29 +00:00
subr_rman.c Eliminate __RMAN_RESOURCE_VISIBLE hack entirely by moving the struct 2005-10-06 21:49:31 +00:00
subr_rtc.c /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
subr_sbuf.c Make a bunch of malloc types static. 2005-02-10 12:02:37 +00:00
subr_scanf.c
subr_sleepqueue.c - Add a new simple facility for marking the current thread as being in a 2005-09-15 19:05:37 +00:00
subr_smp.c Rename the KDB_STOP_NMI kernel option to STOP_NMI and make it apply to all 2005-10-24 21:04:19 +00:00
subr_stack.c Add 'depth' argument to CTRSTACK() macro, which allows to reduce number 2005-08-29 11:34:08 +00:00
subr_taskqueue.c Use shorter names for the Giant and fast taskqueues so that their names 2005-10-25 19:29:02 +00:00
subr_trap.c 1. Change prototype of trapsignal and sendsig to use ksiginfo_t *, most 2005-10-14 12:43:47 +00:00
subr_turnstile.c Trim a couple of unneeded includes. 2005-09-29 19:13:52 +00:00
subr_unit.c Remove debugging printfs. 2005-03-14 06:51:29 +00:00
subr_witness.c Reorganize the interrupt handling code a bit to make a few things cleaner 2005-10-25 19:48:48 +00:00
sys_generic.c - Add two new system calls: preadv() and pwritev() which are like readv() 2005-07-07 18:17:55 +00:00
sys_pipe.c Fix the recent panics/LORs/hangs created by my kqueue commit by: 2005-07-01 16:28:32 +00:00
sys_process.c Fix a LOR between sched_lock and sleep queue lock. 2005-08-19 13:35:34 +00:00
sys_socket.c Introduce three additional MAC Framework and MAC Policy entry points to 2005-04-16 18:46:29 +00:00
syscalls.c Regen for POSIX timer syscalls. 2005-10-23 04:26:10 +00:00
syscalls.master Implement POSIX timers. Current only CLOCK_REALTIME and CLOCK_MONOTONIC 2005-10-23 04:22:56 +00:00
sysv_ipc.c /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
sysv_msg.c Add much needed descriptions for a number of the IPC related sysctl OIDs. 2005-02-12 01:22:39 +00:00
sysv_sem.c Gratuitous renaming of four System V Semaphore MAC Framework entry 2005-06-07 05:03:28 +00:00
sysv_shm.c Re-order MAC and DAC checks in shmget() in order to give precedence to 2005-10-04 16:40:20 +00:00
tty_compat.c Make ttsetcompat() static 2005-10-16 20:40:40 +00:00
tty_conf.c Preparation commit for the tty cleanups that will follow in the near 2004-07-15 20:47:41 +00:00
tty_cons.c Use dynamic major number allocation for /dev/console, there is no 2005-02-27 21:52:42 +00:00
tty_pty.c Merge the dev_clone and dev_clone_cred event handlers into a single 2005-08-08 19:55:32 +00:00
tty_subr.c /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
tty_tty.c Merge the dev_clone and dev_clone_cred event handlers into a single 2005-08-08 19:55:32 +00:00
tty.c Revert most of revision 1.235 and fix the problem a different way. We 2005-10-27 16:47:28 +00:00
uipc_accf.c o setsockopt(2) cannot remove accept filter. [1] 2005-06-11 11:59:48 +00:00
uipc_cow.c Previously, nothing prevented the page that was returned by pmap_extract() 2005-10-23 07:41:56 +00:00
uipc_domain.c /* -> /*- for copyright notices, minor format tweaks as necessary 2005-01-06 23:35:40 +00:00
uipc_mbuf2.c Define four constants, MBUF_{,MEM,CLUSTER,PACKET,TAG}_MEM_NAME, which 2005-07-17 14:04:03 +00:00
uipc_mbuf.c Changes and cleanups to m_sanity(): 2005-08-30 21:31:42 +00:00
uipc_proto.c
uipc_sem.c Const-qualify ksem_timedwait's parameter abstime as it's only passed in. 2005-10-18 11:46:24 +00:00
uipc_sockbuf.c Re-comment sbcompress() to explain what it is it does; it took me 2005-09-18 10:30:10 +00:00
uipc_socket2.c Re-comment sbcompress() to explain what it is it does; it took me 2005-09-18 10:30:10 +00:00
uipc_socket.c Allow 32bit get/setsockopt with SO_SNDTIMEO or SO_RECVTIMEO to work. 2005-10-27 04:26:35 +00:00
uipc_syscalls.c Implement the 32bit versions of recvmsg, recvfrom, sendmsg 2005-10-15 05:57:06 +00:00
uipc_usrreq.c Canonicalize the UNIX domain socket copyright layout: original holders 2005-09-23 12:41:06 +00:00
vfs_acl.c Implement new world order in VFS locking for ACLs. This will remove the 2005-09-17 22:01:14 +00:00
vfs_aio.c Fix tinderbox box by removing incomplete/bad spl usage. Proper giant free 2005-10-12 22:33:22 +00:00
vfs_bio.c Release clean buffer with wrong size and no dependencies also for non-VMIO 2005-10-09 22:41:25 +00:00
vfs_cache.c - Fix a leaked reference to a vnode via v_dd. We rely on cache_purge() and 2005-06-17 01:05:13 +00:00
vfs_cluster.c Only set B_RAM (Read ahead mark) on an incore buffers if we can lock it. 2005-10-24 14:23:04 +00:00
vfs_default.c In vop_stdpathconf(ap) also default for _PC_NAME_MAX and _PC_PATH_MAX. 2005-08-17 06:59:23 +00:00
vfs_export.c Use the refcount API to manage the reference count for user credentials 2005-09-27 18:09:42 +00:00
vfs_extattr.c Implement new world order in VFS locking for extended attributes. This will 2005-09-24 23:47:04 +00:00
vfs_hash.c Don't retry when vget() returns ENOENT in the nonblocking case due to the 2005-09-12 01:48:57 +00:00
vfs_init.c Remove VFS_START(). Its original purpose involved the mfs filesystem, 2005-02-20 23:02:20 +00:00
vfs_lookup.c Use correct VFS locking rather than unconditionally grabbing Giant around 2005-09-21 19:49:42 +00:00
vfs_mount.c Don't unbusy the devfs mount in vfs_mountroot_try() as it gets accessed 2005-09-02 13:37:54 +00:00
vfs_subr.c mpsafevm has been stable and defaulted to 1 on sparc64 for over 6 months, 2005-10-14 23:56:13 +00:00
vfs_syscalls.c Implement new world order in VFS locking for extended attributes. This will 2005-09-24 23:47:04 +00:00
vfs_vnops.c - Replace the series of DEBUG_LOCKS hacks which tried to save the vn_lock 2005-08-03 04:48:22 +00:00
vnode_if.src Allow EVFILT_VNODE events to work on every filesystem type, not just 2005-06-09 20:20:31 +00:00