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dd16f28153
freebsd-skq/sys/kern
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jhb dd16f28153 Only clear a pending thread event if one is pending. 
This fixes a panic when attaching to an already-stopped process after
r325028.  While here, clean up a few other things in the control flow
of the 'sendsig' section:
- Only check for P_STOPPED_TRACE rather than either of P_STOPPED_SIG
  or P_STOPPED_TRACE for most ptrace requests.  The signal handling
  code in kern_sig.c never sets just P_STOPPED_SIG for a traced
  process, so if P_STOPPED_SIG is stopped, P_STOPPED_TRACE should be
  set anyway.  Remove a related debug printf.  Assuming P_STOPPED_TRACE
  permits simplifications in the 'sendsig:' block.
- Move the block to clear the pending thread state up into a new
  block conditional on P_STOPPED_TRACE and handle delivering pending
  signals to the reporting thread and clearing the reporting thread's
  state in this block.
- Consolidate case to send a signal to the process in a single case
  for PT_ATTACH.  The only case that could have been in the else before
  was a PT_ATTACH where P_STOPPED_SIG was not set, so both instances
  of kern_psignal() collapse down to just PT_ATTACH.

Reported by:	pho, mmel
Reviewed by:	kib
Differential Revision:	https://reviews.freebsd.org/D12837
2017-11-13 19:58:58 +00:00
..
bus_if.m "Buses" is the preferred plural of "bus" 2017-01-15 17:54:01 +00:00
capabilities.conf allow posix_fallocate in capability mode 2017-10-12 15:45:53 +00:00
clock_if.m
cpufreq_if.m
device_if.m Import the 'iflib' API library for network drivers. From the author: 2016-05-18 04:35:58 +00:00
genassym.sh Don't prefix zero with 0x in assym.s. 2017-04-13 15:43:44 +00:00
imgact_aout.c Revert r323722. A better fix will be committed shortly, as well as 2017-09-28 08:38:24 +00:00
imgact_binmisc.c tighten buffer bounds in imgact_binmisc_populate_interp 2017-03-21 18:02:14 +00:00
imgact_elf32.c
imgact_elf64.c
imgact_elf.c Add AT_HWCAP2 ELF auxiliary vector. 2017-10-21 12:05:01 +00:00
imgact_gzip.c
imgact_shell.c ANSI-fy exec_shell_imgact(). 2017-11-04 15:41:08 +00:00
inflate.c Remove register keyword from sys/ and ANSIfy prototypes 2017-05-17 00:34:34 +00:00
init_main.c Introduce EVENTHANDLER_LIST and some users. 2017-11-09 22:51:48 +00:00
init_sysent.c regen init_sysent.c r324560 2017-10-12 15:48:37 +00:00
kern_acct.c Commit the 64-bit inode project. 2017-05-23 09:29:05 +00:00
kern_alq.c
kern_clock.c Remove register keyword from sys/ and ANSIfy prototypes 2017-05-17 00:34:34 +00:00
kern_clocksource.c Remove cpu_deepest_sleep variable. 2017-02-24 16:11:55 +00:00
kern_condvar.c Introduce SCHEDULER_STOPPED_TD for use when the thread pointer was already read 2017-02-17 06:45:04 +00:00
kern_conf.c Undo r309891. Konstantin is right in that this condition normally 2016-12-12 19:11:04 +00:00
kern_cons.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
kern_context.c
kern_cpu.c Add an EARLY_AP_STARTUP option to start APs earlier during boot. 2016-05-14 18:22:52 +00:00
kern_cpuset.c Fix size to copyout(9) for cpuset_getid(2). 2017-08-22 20:46:29 +00:00
kern_ctf.c Fix improper use of "its". 2016-11-08 23:59:41 +00:00
kern_descrip.c ddb show files: fix up file types and whitespace 2017-06-14 07:46:52 +00:00
kern_dtrace.c Sprinkle __read_frequently on few obvious places. 2017-09-06 20:33:33 +00:00
kern_dump.c Move kernel dump offset tracking into MI code. 2017-10-18 15:38:05 +00:00
kern_environment.c Create wrappers for uint64_t and int64_t for the tunables. While not 2016-04-15 03:09:55 +00:00
kern_et.c Add labels to sysctls related to clocks. 2016-12-14 12:56:58 +00:00
kern_event.c Add pfind_any 2017-11-11 18:04:39 +00:00
kern_exec.c Introduce EVENTHANDLER_LIST and some users. 2017-11-09 22:51:48 +00:00
kern_exit.c Introduce EVENTHANDLER_LIST and some users. 2017-11-09 22:51:48 +00:00
kern_fail.c Avoid open-coding PRI_UNCHANGED. 2017-05-18 18:24:11 +00:00
kern_ffclock.c kernel: use our nitems() macro when it is available through param.h. 2016-04-19 23:48:27 +00:00
kern_fork.c Introduce EVENTHANDLER_LIST and some users. 2017-11-09 22:51:48 +00:00
kern_gzio.c Add support for compressed kernel dumps. 2017-10-25 00:51:00 +00:00
kern_hhook.c Get closer to a VIMAGE network stack teardown from top to bottom rather 2016-06-21 13:48:49 +00:00
kern_idle.c
kern_intr.c Extend cpuset_get/setaffinity() APIs 2017-05-03 18:41:08 +00:00
kern_jail.c Jails: Optionally prevent jailed root from binding to privileged ports 2017-06-06 02:15:00 +00:00
kern_khelp.c
kern_kthread.c Re-schedule signals after kthread exits, since apparently there are 2016-08-10 13:47:12 +00:00
kern_ktr.c Fix a couple of comment typos 2017-08-15 02:21:02 +00:00
kern_ktrace.c Ktracing kevent(2) calls with unusual arguments might leads to an 2017-03-12 13:48:24 +00:00
kern_linker.c sysctl-s in a module should be accessible only when the module is initialized 2017-10-05 12:32:14 +00:00
kern_lock.c lockmgr: implement fast path 2017-02-12 09:49:44 +00:00
kern_lockf.c put very expensive sanity checks of advisory locks under DIAGNOSTIC 2017-01-30 15:20:13 +00:00
kern_lockstat.c Sprinkle __read_frequently on few obvious places. 2017-09-06 20:33:33 +00:00
kern_loginclass.c Fixup r325264, take #2 2017-11-01 06:46:58 +00:00
kern_malloc.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
kern_mbuf.c Improvements to sendfile(2) mbuf free routine. 2017-10-09 21:06:16 +00:00
kern_mib.c All these files need sys/vmmeter.h, but now they got it implicitly 2017-04-17 17:07:00 +00:00
kern_module.c
kern_mtxpool.c sys/kern: spelling fixes in comments. 2016-04-29 22:15:33 +00:00
kern_mutex.c mtx: implement thread lock fastpath 2017-10-21 22:40:09 +00:00
kern_ntptime.c ANSIfy kern_ntptime.c 2017-01-25 20:22:32 +00:00
kern_numa.c Remove unneeded include of vm_phys.h. 2017-04-17 16:51:04 +00:00
kern_osd.c osd(9): Change array pointer to array pointer type from void* 2016-04-26 19:57:35 +00:00
kern_physio.c Add four new RCTL resources - readbps, readiops, writebps and writeiops, 2016-04-07 04:23:25 +00:00
kern_pmc.c Cast values to (int) before comparing them to the range of the 2017-02-24 01:39:12 +00:00
kern_poll.c
kern_priv.c
kern_proc.c Be more careful when doing calculation with request from userland. 2017-11-13 07:47:43 +00:00
kern_procctl.c reaper: Make REAPER_KILL_SUBTREE actually work. 2016-12-14 22:49:20 +00:00
kern_prot.c Add security.bsd.see_jail_proc 2017-05-23 16:59:24 +00:00
kern_racct.c try to fix RACCT_RSS accounting 2017-02-14 13:54:05 +00:00
kern_rangelock.c
kern_rctl.c sys/kern: spelling fixes in comments. 2016-04-29 22:15:33 +00:00
kern_resource.c Save on uihash table locking by checking if the caller already uses the struct 2017-11-01 05:51:20 +00:00
kern_rmlock.c Corrected misspelled versions of rendezvous. 2017-04-09 02:00:03 +00:00
kern_rwlock.c rwlock: use fcmpset for setting RW_LOCK_WRITE_SPINNER 2017-11-11 09:34:11 +00:00
kern_sdt.c sdt: make all sdt probe sites test one variable 2017-10-22 20:22:23 +00:00
kern_sema.c
kern_sendfile.c Address two problems with sendfile(..., SF_NOCACHE) and apply one 2017-10-13 16:31:50 +00:00
kern_sharedpage.c
kern_shutdown.c Handle RB_POWERCYCLE in the MI part of the kernel 2017-10-25 15:30:44 +00:00
kern_sig.c Use pfind_any in linux_rt_sigqueueinfo and kern_sigqueue 2017-11-11 18:10:09 +00:00
kern_switch.c Add comments explaining unobvious td_critnest adjustments in 2017-01-22 19:41:42 +00:00
kern_sx.c locks: take the number of readers into account when waiting 2017-10-05 19:18:02 +00:00
kern_synch.c - Remove 'struct vmmeter' from 'struct pcpu', leaving only global vmmeter 2017-04-17 17:34:47 +00:00
kern_syscalls.c
kern_sysctl.c sysctl: try to avoid malloc in name2oid 2017-11-11 21:50:36 +00:00
kern_tc.c The th_bintime, th_microtime and th_nanotime members of the timehand 2017-10-11 11:03:11 +00:00
kern_thr.c Defer ptracestop() signals that cannot be delivered immediately 2017-02-20 15:53:16 +00:00
kern_thread.c Introduce EVENTHANDLER_LIST and some users. 2017-11-09 22:51:48 +00:00
kern_time.c Add clock_nanosleep() 2017-03-19 00:51:12 +00:00
kern_timeout.c Remove register keyword from sys/ and ANSIfy prototypes 2017-05-17 00:34:34 +00:00
kern_umtx.c Convert explicit panic() call to assert. 2017-11-04 10:49:34 +00:00
kern_uuid.c Hint at the intended usage for the "ll" field of struct uuid_private. 2017-06-13 15:37:04 +00:00
kern_xxx.c Remove register keyword from sys/ and ANSIfy prototypes 2017-05-17 00:34:34 +00:00
ksched.c
link_elf_obj.c Reduce stack usage in link_elf_load_file(), allocating struct nameidata. 2017-03-09 00:45:15 +00:00
link_elf.c kern: for pointers replace 0 with NULL. 2016-04-15 16:10:11 +00:00
linker_if.m sys/kern: spelling fixes in comments. 2016-04-29 22:15:33 +00:00
Make.tags.inc
Makefile Don't create pointless backups of generated files in "make sysent". 2016-07-28 21:29:04 +00:00
makesyscalls.sh Commit the 64-bit inode project. 2017-05-23 09:29:05 +00:00
md4c.c ANSIfy sys/kern/md4c.c 2017-11-05 19:49:44 +00:00
md5c.c crypto routines: Hint minimum buffer sizes to the compiler 2016-05-26 19:29:29 +00:00
msi_if.m Introduce MSI and MSI-X support to intrng. This adds a new msi device 2016-05-16 09:11:40 +00:00
p1003_1b.c Use passed thread pointer instead of curthread in sys_sched_yield 2017-11-12 02:34:33 +00:00
pic_if.m INTRNG: Rework handling with resources. Partially revert r301453. 2016-08-19 10:52:39 +00:00
posix4_mib.c Make p1003_1b.aio_listio_max a tunable 2017-08-08 16:14:31 +00:00
sched_4bsd.c Remove register keyword from sys/ and ANSIfy prototypes 2017-05-17 00:34:34 +00:00
sched_ule.c Don't take Giant for SMP status and cpu topology sysctls. 2017-10-18 22:00:44 +00:00
serdev_if.m
stack_protector.c
subr_acl_nfs4.c
subr_acl_posix1e.c
subr_autoconf.c Add config_intrhook_oneshot(): schedule an intrhook function and unregister 2017-08-13 18:10:24 +00:00
subr_blist.c The recent change to initialization of blists (r324420) relied on '-1' 2017-10-09 18:19:06 +00:00
subr_bufring.c
subr_bus_dma.c Add CAM/NVMe support for CAM_DATA_SG 2017-08-29 15:29:57 +00:00
subr_bus.c Add eventhandler notifications for newbus device attach/detach. 2017-10-08 17:33:49 +00:00
subr_busdma_bufalloc.c
subr_capability.c
subr_clock.c Add common code to support realtime clocks that store year without century. 2017-07-23 21:28:00 +00:00
subr_counter.c Zero return value when counter_rate() switches over to next second and 2016-12-13 20:11:45 +00:00
subr_devmap.c o Replace __riscv__ with __riscv 2017-08-07 14:09:57 +00:00
subr_devstat.c Add support for managing Shingled Magnetic Recording (SMR) drives. 2016-05-19 14:08:36 +00:00
subr_disk.c
subr_dummy_vdso_tc.c
subr_eventhandler.c Introduce EVENTHANDLER_LIST and some users. 2017-11-09 22:51:48 +00:00
subr_fattime.c
subr_firmware.c Fix improper use of "its". 2016-11-08 23:59:41 +00:00
subr_gtaskqueue.c Fix "taskqgroup_attach: setaffinity failed: 3" with iflib drivers 2017-10-05 14:43:30 +00:00
subr_hash.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
subr_hints.c
subr_intr.c Fix compile error with option DEBUG. This is fallout from some long-ago 2017-08-16 16:51:55 +00:00
subr_kdb.c Change kdb_active type to u_char. 2017-10-22 13:42:56 +00:00
subr_kobj.c - Also outside of the KOBJOPLOOKUP macro - which in turn is used by 2017-05-08 21:08:39 +00:00
subr_lock.c locks: follow up r313386 2017-02-07 16:01:07 +00:00
subr_log.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
subr_mchain.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
subr_module.c
subr_msgbuf.c sys/kern: spelling fixes in comments. 2016-04-29 22:15:33 +00:00
subr_param.c Allow sysctl kern.vm_guest to return bhyve when running under bhyve. 2017-06-08 04:02:14 +00:00
subr_pcpu.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
subr_pctrie.c Make the number of children for pctrie node available outside subr_pctrie.c. 2017-07-27 16:40:14 +00:00
subr_power.c
subr_prf.c kvprintf %b enhancements 2017-07-12 07:30:14 +00:00
subr_prof.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
subr_rman.c Add new bus methods for mapping resources. 2016-05-20 17:57:47 +00:00
subr_rtc.c Add clock_schedule(), a feature that allows realtime clock drivers to 2017-07-31 01:18:21 +00:00
subr_sbuf.c An off-by-one error exists in sbuf_vprintf()'s use of SBUF_HASROOM() when an 2017-08-18 02:06:28 +00:00
subr_scanf.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
subr_sfbuf.c subr_sfbus.c need sys/proc.h for struct thread definition. 2017-02-07 17:31:24 +00:00
subr_sglist.c Add sglist_append_sglist(). 2017-05-16 23:31:52 +00:00
subr_sleepqueue.c Make the sleepq chain hash size configurable per-arch and bump on amd64. 2017-10-22 20:43:50 +00:00
subr_smp.c Don't take Giant for SMP status and cpu topology sysctls. 2017-10-18 22:00:44 +00:00
subr_stack.c Let stack_create(9) take a malloc flags argument. 2017-10-06 21:52:28 +00:00
subr_syscall.c Move struct syscall_args syscall arguments parameters container into 2017-06-12 21:03:23 +00:00
subr_taskqueue.c Add taskqueue_enqueue_timeout_sbt(), because sometimes you want more control 2017-07-31 00:54:50 +00:00
subr_terminal.c Oops, my fix for bright colors broke bright black some more (in cases 2017-03-27 10:48:28 +00:00
subr_trap.c - Remove 'struct vmmeter' from 'struct pcpu', leaving only global vmmeter 2017-04-17 17:34:47 +00:00
subr_turnstile.c Remove unused declaration and update ddb.4 2017-08-24 19:16:25 +00:00
subr_uio.c Simplify UIO_SYSSPACE and UIO_NOCOPY paths in uiomove 2017-07-06 15:03:54 +00:00
subr_unit.c Properly reset the fields in clean_unrhdr. 2017-10-16 16:14:50 +00:00
subr_vmem.c Start annotating global _padalign locks with __exclusive_cache_line 2017-09-06 20:28:18 +00:00
subr_witness.c Bump WITNESS_PENDLIST to accomodate sleepq chain bump. 2017-10-23 01:00:35 +00:00
sys_capability.c capsicum: perform copyout without the fildesc lock held in sys_cap_ioctls_get 2016-10-21 16:12:23 +00:00
sys_generic.c Fix NULL pointer dereference and panic with shm file pread/pwrite. 2017-03-10 10:09:44 +00:00
sys_pipe.c Generate syscall tables and update pipe() implementation after r302094. 2016-06-22 21:18:19 +00:00
sys_procdesc.c Hide the boottime and bootimebin globals, provide the getboottime(9) 2016-07-27 11:08:59 +00:00
sys_process.c Only clear a pending thread event if one is pending. 2017-11-13 19:58:58 +00:00
sys_socket.c Don't grab SOCK_LOCK for soref() when queuing an AIO request. 2017-08-25 23:10:27 +00:00
syscalls.c Regen. 2017-06-17 00:58:19 +00:00
syscalls.master Add abstime kqueue(2) timers and expand struct kevent members. 2017-06-17 00:57:26 +00:00
systrace_args.c Regen. 2017-06-17 00:58:19 +00:00
sysv_ipc.c
sysv_msg.c Remove register keyword from sys/ and ANSIfy prototypes 2017-05-17 00:34:34 +00:00
sysv_sem.c sysvsem: check if semu_list has anything on it before grabbing the lock 2017-10-19 00:31:00 +00:00
sysv_shm.c Audit arguments to System V IPC system calls implementing sempahores, 2017-03-30 22:26:15 +00:00
tty_compat.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
tty_info.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
tty_inq.c Check tty_gone() after allocating IO buffers. The tty lock has to be 2017-01-13 16:37:38 +00:00
tty_outq.c Check tty_gone() after allocating IO buffers. The tty lock has to be 2017-01-13 16:37:38 +00:00
tty_pts.c Commit the 64-bit inode project. 2017-05-23 09:29:05 +00:00
tty_tty.c
tty_ttydisc.c
tty.c Commit the 64-bit inode project. 2017-05-23 09:29:05 +00:00
uipc_accf.c Listening sockets improvements. 2017-06-08 21:30:34 +00:00
uipc_debug.c ddb show socket debugging 2017-06-15 04:49:12 +00:00
uipc_domain.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
uipc_mbuf2.c Remove writability requirement for single-mbuf, contiguous-range 2017-01-12 06:38:03 +00:00
uipc_mbuf.c mbuf(9): unbreak m_fragment() 2017-10-16 21:46:11 +00:00
uipc_mbufhash.c
uipc_mqueue.c Correct sysent flags for dynamically loaded syscalls. 2017-07-14 09:34:44 +00:00
uipc_sem.c Audit arguments to POSIX message queues, semaphores, and shared memory. 2017-03-31 13:43:00 +00:00
uipc_shm.c Replace manyinstances of VM_WAIT with blocking page allocation flags 2017-11-08 02:39:37 +00:00
uipc_sockbuf.c Third take on the r319685 and r320480. Actually allow for call soisconnected() 2017-08-24 20:49:19 +00:00
uipc_socket.c Fix locking in soisconnected(). 2017-09-14 18:05:54 +00:00
uipc_syscalls.c Listening sockets improvements. 2017-06-08 21:30:34 +00:00
uipc_usrreq.c Hide struct socket and struct unpcb from the userland. 2017-10-02 23:29:56 +00:00
vfs_acl.c Add system-call argument auditing for ACL-related system calls. 2017-03-30 22:00:58 +00:00
vfs_aio.c Fix aio_suspend in 32-bit emulation 2017-10-26 19:45:15 +00:00
vfs_bio.c Replace manyinstances of VM_WAIT with blocking page allocation flags 2017-11-08 02:39:37 +00:00
vfs_cache.c namecache: bump numcache after dropping all locks 2017-11-05 22:29:45 +00:00
vfs_cluster.c Move bogus_page declaration to vm_page.h and initialization to vm_page.c. 2017-01-04 22:27:19 +00:00
vfs_default.c Only handle _PC_MAX_CANON, _PC_MAX_INPUT, and _PC_VDISABLE for TTY devices. 2017-09-21 23:05:32 +00:00
vfs_export.c vfs_export_lookup: Fix r324054 2017-10-06 09:02:36 +00:00
vfs_extattr.c
vfs_hash.c Add vfs_hash_ref(9) function, which finds a vnode by the hash value 2016-05-11 06:32:22 +00:00
vfs_init.c Renumber license clauses in sys/kern to avoid skipping #3 2016-09-15 13:16:20 +00:00
vfs_lookup.c When a Linux program tries to access a /path the kernel tries 2017-10-15 18:53:21 +00:00
vfs_mount.c remove process and jail directory machinations from dounmount 2017-10-13 09:42:05 +00:00
vfs_mountroot.c Make root_mount_rel(9) ignore NULL arguments, like it used to before r313351. 2017-09-05 14:32:56 +00:00
vfs_subr.c Avoid the nbp lookup in the final loop iteration in flushbuflist(). 2017-10-20 14:56:13 +00:00
vfs_syscalls.c Remove the support for mknod(S_IFMT), which created dummy vnodes with 2017-10-22 08:11:45 +00:00
vfs_vnops.c Use whole mnt_stat.f_fsid bits for st_dev. 2017-05-27 17:00:30 +00:00
vnode_if.src For UNIX sockets make vnode point not to the socket, but to the UNIX PCB, 2017-06-02 17:31:25 +00:00