opnsense-src/sys/kern
Chuck Silvers a0a36d4886 vfs: avoid exposing partially constructed vnodes
If multiple threads race calling vfs_hash_insert() while creating vnodes
with the same identity, all of the vnodes which lose the race must be
destroyed before any other thread can see them. Previously this was
accomplished by the vput() in vfs_hash_insert() resulting in the vnode's
VOP_INACTIVE() method calling vgone() before the vnode lock was unlocked,
but at some point changes to the the vnode refcount/inactive logic have caused
that to no longer work, leading to crashes, so instead vfs_hash_insert()
must call vgone() itself before calling vput() on vnodes which lose the race.

Reviewed by:	mjg, kib
Sponsored by:	Netflix
Differential Revision:	https://reviews.freebsd.org/D26291
2020-09-05 00:26:03 +00:00
..
bus_if.m Remove trailing white space. 2020-02-26 16:22:28 +00:00
capabilities.conf Permit cpuset_(get|set)domain() in capability mode. 2020-07-06 16:34:29 +00:00
clock_if.m
cpufreq_if.m
device_if.m
genassym.sh
genoffset.c Merge td_epochnest with td_no_sleeping. 2019-10-29 17:28:25 +00:00
genoffset.sh
imgact_aout.c Make ps_strings in struct image_params into a pointer. 2020-04-15 20:21:30 +00:00
imgact_binmisc.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
imgact_elf.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
imgact_elf32.c
imgact_elf64.c
imgact_shell.c
init_main.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
init_sysent.c Regenerate. 2020-07-06 16:34:49 +00:00
kern_acct.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_alq.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_clock.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_clocksource.c
kern_condvar.c
kern_conf.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_cons.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_context.c
kern_cpu.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_cpuset.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_ctf.c vfs: drop the mostly unused flags argument from VOP_UNLOCK 2020-01-03 22:29:58 +00:00
kern_descrip.c fd: pwd_drop after releasing filedesc lock 2020-08-22 16:57:45 +00:00
kern_dtrace.c
kern_dump.c - Cleanups related to sparc64 removal. 2020-07-28 10:58:37 +00:00
kern_environment.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_et.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_event.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_exec.c cache: drop the always curthread argument from reverse lookup routines 2020-08-24 08:57:02 +00:00
kern_exit.c Fix several issues with process group orphanage. 2020-08-22 21:32:11 +00:00
kern_fail.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_ffclock.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
kern_fork.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_hhook.c Remove duplicated empty lines from kern/*.c 2020-01-30 20:05:05 +00:00
kern_idle.c
kern_intr.c Allow swi_sched() to be called from NMI context. 2020-07-25 15:19:38 +00:00
kern_jail.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_kcov.c Mark COVERAGE and KCOV as part of KCSAN 2020-08-19 14:11:25 +00:00
kern_khelp.c
kern_kthread.c Do a lockless check in kthread_suspend_check 2020-07-25 07:14:33 +00:00
kern_ktr.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_ktrace.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
kern_linker.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_lock.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_lockf.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_lockstat.c
kern_loginclass.c
kern_malloc.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_mbuf.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_mib.c Add sysctl(8) formatting for hw.pagesizes. 2020-09-02 18:17:08 +00:00
kern_module.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_mtxpool.c Remove duplicated empty lines from kern/*.c 2020-01-30 20:05:05 +00:00
kern_mutex.c mtx: add mtx_wait_unlocked 2020-08-04 23:00:00 +00:00
kern_ntptime.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_osd.c
kern_physio.c
kern_pmc.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_poll.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
kern_priv.c vfs: respect PRIV_VFS_LOOKUP in vaccess_smr 2020-08-25 14:18:50 +00:00
kern_proc.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_procctl.c correct procctl(PROC_PROTMAX_STATUS _NOFORCE return 2020-05-01 14:30:59 +00:00
kern_prot.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_racct.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_rangelock.c rangelock: add rangelock_cookie_assert 2019-09-15 02:59:53 +00:00
kern_rctl.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_resource.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_rmlock.c rms: fix typo: bitmamp -> bitmap 2020-08-04 20:31:03 +00:00
kern_rwlock.c locks: fix a long standing bug for primitives with kdtrace but without spinning 2020-07-23 17:26:53 +00:00
kern_sdt.c
kern_sema.c
kern_sendfile.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_sharedpage.c kern_sharedpage.c: Add exec_sysvec_init_secondary() helper. 2020-08-23 19:43:47 +00:00
kern_shutdown.c Fix writing of the final block of encrypted, compressed kernel dumps. 2020-08-27 17:36:06 +00:00
kern_sig.c Always report ENOSYS in init 2020-09-02 23:17:33 +00:00
kern_switch.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
kern_sx.c locks: fix a long standing bug for primitives with kdtrace but without spinning 2020-07-23 17:26:53 +00:00
kern_synch.c Handle PCATCH in blockcount_sleep() so it can be interrupted. 2020-04-21 17:13:06 +00:00
kern_syscalls.c add a sanity check to the system call registration code 2019-12-11 15:52:29 +00:00
kern_sysctl.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_tc.c Remove double-calls to tc_get_timecount() to warm timecounters. 2020-06-10 22:30:32 +00:00
kern_thr.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
kern_thread.c cred: add more asserts for td_realucred == td_ucred 2020-08-01 16:02:32 +00:00
kern_time.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
kern_timeout.c Assert that cc_exec_drain(cc, direct) is NULL before assigning a new value. 2020-09-02 10:00:30 +00:00
kern_tslog.c
kern_ubsan.c Remove duplicated empty lines from kern/*.c 2020-01-30 20:05:05 +00:00
kern_umtx.c sys/: Document few more sysctls. 2020-03-02 15:30:52 +00:00
kern_uuid.c validate_uuid: absorb the rest of parse_uuid with a flags arg 2020-04-15 18:39:12 +00:00
kern_xxx.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
ksched.c
link_elf.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
link_elf_obj.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
linker_if.m
Make.tags.inc
Makefile sys/kern sysent: re-add dependency on capabilities.conf 2020-02-12 19:06:34 +00:00
makesyscalls.sh makesyscalls.sh: improve the 'this is going away' message 2020-07-28 01:05:40 +00:00
md4c.c
md5c.c
msi_if.m
p1003_1b.c
pic_if.m
posix4_mib.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
sched_4bsd.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
sched_ule.c sys/: Document few more sysctls. 2020-03-02 15:30:52 +00:00
serdev_if.m
stack_protector.c
subr_acl_nfs4.c vfs: remove the obsolete privused argument from vaccess 2020-08-05 09:27:03 +00:00
subr_acl_posix1e.c vfs: remove the obsolete privused argument from vaccess 2020-08-05 09:27:03 +00:00
subr_atomic64.c emulated atomic64: disable interrupts as the lock mechanism on !SMP 2020-01-03 18:29:20 +00:00
subr_autoconf.c
subr_blist.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_boot.c
subr_bufring.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_bus.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_bus_dma.c crypto(9): add CRYPTO_BUF_VMPAGE 2020-08-26 02:37:42 +00:00
subr_busdma_bufalloc.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_capability.c Remove unused SYSINIT macros for capability rights. 2020-03-26 15:02:37 +00:00
subr_clock.c Remove duplicated empty lines from kern/*.c 2020-01-30 20:05:05 +00:00
subr_compressor.c clamp kernel dump compression level when using gzip 2020-02-20 23:53:48 +00:00
subr_counter.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_coverage.c Mark COVERAGE and KCOV as part of KCSAN 2020-08-19 14:11:25 +00:00
subr_csan.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_devmap.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_devstat.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
subr_disk.c
subr_dummy_vdso_tc.c
subr_early.c
subr_epoch.c Add full support support for dynamic allocation and freeing of epoch's. 2020-08-07 15:32:42 +00:00
subr_eventhandler.c
subr_fattime.c Remove duplicated empty lines from kern/*.c 2020-01-30 20:05:05 +00:00
subr_filter.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_firmware.c Fix a panic when unloading firmware 2020-06-29 21:35:50 +00:00
subr_gtaskqueue.c Remove the "config" taskqgroup and its KPIs. 2020-03-30 14:24:03 +00:00
subr_hash.c
subr_hints.c Remove duplicated empty lines from kern/*.c 2020-01-30 20:05:05 +00:00
subr_intr.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_kdb.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
subr_kobj.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_lock.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_log.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_mchain.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_module.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_msgbuf.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_param.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
subr_pcpu.c Add COUNTER_U64_SYSINIT() and COUNTER_U64_DEFINE_EARLY(). 2020-03-06 19:09:01 +00:00
subr_pctrie.c Use SMR to provide safe unlocked lookup for pctries from SMR zones 2020-07-24 17:32:10 +00:00
subr_physmem.c Convert arm's physmem interface to MI code 2020-04-19 00:12:30 +00:00
subr_pidctrl.c
subr_power.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_prf.c remove %n support from printf(9) 2020-05-09 15:56:02 +00:00
subr_prng.c Add prng(9) API 2020-08-13 20:48:14 +00:00
subr_prof.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
subr_rangeset.c
subr_rman.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
subr_rtc.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
subr_sbuf.c Remove duplicated empty lines from kern/*.c 2020-01-30 20:05:05 +00:00
subr_scanf.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_sfbuf.c
subr_sglist.c Step 4.2: start divorce of M_EXT and M_EXTPG 2020-05-03 00:37:16 +00:00
subr_sleepqueue.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
subr_smp.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_smr.c Use COUNTER_U64_DEFINE_EARLY() in places where it simplifies things. 2020-03-06 19:10:00 +00:00
subr_stack.c kern.tty_info_kstacks: add a compact format 2020-07-06 16:33:28 +00:00
subr_stats.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
subr_syscall.c Retire procfs-based process debugging. 2020-04-01 19:22:09 +00:00
subr_taskqueue.c Add flag to struct task to mark the task as requiring network epoch. 2020-02-11 18:48:07 +00:00
subr_terminal.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_trap.c Retire procfs-based process debugging. 2020-04-01 19:22:09 +00:00
subr_turnstile.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_uio.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_unit.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
subr_vmem.c vmem: Avoid allocating span tags when segments are never released. 2020-08-26 14:31:35 +00:00
subr_witness.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
sys_capability.c Enter a write sequence when updating rights. 2020-03-19 15:39:45 +00:00
sys_generic.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
sys_getrandom.c Fix a typo in r356667 comment 2020-01-12 23:52:16 +00:00
sys_pipe.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
sys_procdesc.c procdesc: allow to collect status through wait(1) if process is traced 2019-11-25 18:33:21 +00:00
sys_process.c cache: drop the always curthread argument from reverse lookup routines 2020-08-24 08:57:02 +00:00
sys_socket.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
syscalls.c Update the files created from the new syscalls.master from r361599. 2020-05-28 21:23:02 +00:00
syscalls.master Add a syscall for the nfs-over-tls daemons to use. 2020-05-28 21:06:10 +00:00
systrace_args.c Update the files created from the new syscalls.master from r361599. 2020-05-28 21:23:02 +00:00
sysv_ipc.c
sysv_msg.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
sysv_sem.c Apply the logic from r363051 to semctl(2) and __sem_base field. 2020-07-09 18:34:54 +00:00
sysv_shm.c Centralize compatability translation macros. 2020-04-14 20:30:48 +00:00
tty.c Implement FLUSHO 2020-08-27 05:11:15 +00:00
tty_compat.c
tty_info.c kern.tty_info_kstacks: set compact format as default 2020-07-06 16:34:15 +00:00
tty_inq.c
tty_outq.c
tty_pts.c tty_pts: don't rely on tty header pollution for sys/mutex.h 2019-11-29 03:56:01 +00:00
tty_tty.c
tty_ttydisc.c Implement FLUSHO 2020-08-27 05:11:15 +00:00
uipc_accf.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
uipc_debug.c
uipc_domain.c - Move global network epoch definition to epoch.h, as more different 2020-01-15 03:34:21 +00:00
uipc_ktls.c uipc_ktls: remove unused static function 2020-09-05 00:19:40 +00:00
uipc_mbuf.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
uipc_mbuf2.c m_pulldown(): Change an if () panic() into a KASSERT(). 2019-11-06 22:40:19 +00:00
uipc_mbufhash.c
uipc_mqueue.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
uipc_sem.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
uipc_shm.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
uipc_sockbuf.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
uipc_socket.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
uipc_syscalls.c
uipc_usrreq.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
vfs_acl.c vfs: fix trivial whitespace issues which don't interefere with blame 2020-07-10 09:01:36 +00:00
vfs_aio.c vfs: drop the error parameter from vn_isdisk, introduce vn_isdisk_error 2020-08-19 02:51:17 +00:00
vfs_bio.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
vfs_cache.c cache: don't update timestmaps on found entry 2020-08-27 06:31:55 +00:00
vfs_cluster.c vfs: fix trivial whitespace issues which don't interefere with blame 2020-07-10 09:01:36 +00:00
vfs_default.c vfs: assert that VI_TEXT_REF is not already set 2020-08-16 18:45:31 +00:00
vfs_export.c kern: clean up empty lines in .c and .h files 2020-09-01 22:12:32 +00:00
vfs_extattr.c vfs_extattr: Allow extattr names up to the full max 2020-05-14 03:01:23 +00:00
vfs_hash.c vfs: avoid exposing partially constructed vnodes 2020-09-05 00:26:03 +00:00
vfs_init.c vfs: fix trivial whitespace issues which don't interefere with blame 2020-07-10 09:01:36 +00:00
vfs_lookup.c Add a comment to clarify when and why cached names are deleted 2020-08-27 22:14:58 +00:00
vfs_mount.c Fix a "v_seqc_users == 0 not met" panic when VFS_STATFS() fails during mount. 2020-08-26 21:49:43 +00:00
vfs_mountroot.c vfs: fix trivial whitespace issues which don't interefere with blame 2020-07-10 09:01:36 +00:00
vfs_subr.c vfs: retire vholdl as a symbol 2020-09-02 19:21:37 +00:00
vfs_syscalls.c devfs: rework si_usecount to track opens 2020-08-11 14:27:57 +00:00
vfs_vnops.c cache: drop the always curthread argument from reverse lookup routines 2020-08-24 08:57:02 +00:00
vnode_if.src vfs: remove the always-curthread td argument from VOP_RECLAIM 2020-08-19 07:28:01 +00:00