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freebsd-skq/sys/kern
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mjg 11a0ed9355 vfs: fix device count leak on vrele racing with vgone 
The race is:

CPU1                                CPU2
                                    devfs_reclaim_vchr
make v_usecount 0
                                      VI_LOCK
                                      sees v_usecount == 0, no updates
                                      vp->v_rdev = NULL;
                                      ...
                                      VI_UNLOCK
VI_LOCK
v_decr_devcount
  sees v_rdev == NULL, no updates

In this scenario si_devcount decrement is not performed.

Note this can only happen if the vnode lock is not held.

Reviewed by:	kib
Tested by:	pho
Differential Revision:	https://reviews.freebsd.org/D23529
2020-02-10 22:28:54 +00:00
..
bus_if.m
Add necessary bits for Linux KPI to work correctly on powerpc
2019-08-04 19:28:10 +00:00
capabilities.conf
Add a way to manage thread signal mask using shared word, instead of syscall.
2020-02-09 11:53:12 +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
expose thread_lite definition to tied modules
2018-07-03 02:50:07 +00:00
imgact_aout.c
vfs: drop the mostly unused flags argument from VOP_UNLOCK
2020-01-03 22:29:58 +00:00
imgact_binmisc.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
imgact_elf32.c
…
imgact_elf64.c
…
imgact_elf.c
Add AT_BSDFLAGS auxv entry.
2020-02-09 12:10:37 +00:00
imgact_shell.c
Add helper functions to copy strings into struct image_args.
2018-11-29 21:00:56 +00:00
init_main.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
init_sysent.c
Regen.
2020-02-09 11:53:37 +00:00
kern_acct.c
vfs: drop the mostly unused flags argument from VOP_UNLOCK
2020-01-03 22:29:58 +00:00
kern_alq.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
kern_clock.c
sleep(9), sleepqueue(9): const'ify wchan pointers
2019-12-24 16:19:33 +00:00
kern_clocksource.c
Rename hardclock_cnt() to hardclock() and remove the old implementation.
2018-09-06 02:10:59 +00:00
kern_condvar.c
…
kern_conf.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
kern_cons.c
kern_cons: add a stub kbdinit for configs with no keyboard/console drivers
2019-12-26 15:47:19 +00:00
kern_context.c
Remove superfluous bzero in getcontext/swapcontext/sendsig
2018-11-26 20:56:05 +00:00
kern_cpu.c
hwpstate_intel(4): Silence/fix Coverity reports
2020-01-29 03:15:34 +00:00
kern_cpuset.c
bitset: rename confusing macro NAND to ANDNOT
2019-12-13 09:32:16 +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: always nullify *fdp in fget* routines
2020-02-05 00:20:26 +00:00
kern_dtrace.c
…
kern_dump.c
[PPC64] Initial kernel minidump implementation
2019-10-14 13:04:04 +00:00
kern_environment.c
Follow up r352244: kenv: tighten up assertions
2019-09-12 14:34:46 +00:00
kern_et.c
…
kern_event.c
Avoid relying on header pollution from sys/refcount.h.
2019-07-29 20:26:01 +00:00
kern_exec.c
Add a way to manage thread signal mask using shared word, instead of syscall.
2020-02-09 11:53:12 +00:00
kern_exit.c
Remove sparc64 kernel support
2020-02-03 17:35:11 +00:00
kern_fail.c
Use callout(9) instead of deprecated timeout(9) for fail points.
2019-12-13 19:26:04 +00:00
kern_ffclock.c
…
kern_fork.c
Add a way to manage thread signal mask using shared word, instead of syscall.
2020-02-09 11:53:12 +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
Fix for unbalanced EPOCH(9) usage in the generic kernel interrupt
2020-02-10 20:23:08 +00:00
kern_jail.c
vfs: remove now useless ENODEV handling from vn_fullpath consumers
2020-02-08 15:51:08 +00:00
kern_kcov.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
kern_khelp.c
…
kern_kthread.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
kern_ktr.c
Add KERNEL_PANICKED macro for use in place of direct panicstr tests
2020-01-12 06:07:54 +00:00
kern_ktrace.c
ktrace: provide ktrstat_error
2020-02-03 22:26:00 +00:00
kern_linker.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
kern_lock.c
lockmgr: don't touch the lock past unlock
2020-01-24 07:42:57 +00:00
kern_lockf.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
kern_lockstat.c
Add lockmgr(9) probes to the lockstat DTrace provider.
2019-08-21 23:43:58 +00:00
kern_loginclass.c
Replace hand-rolled unrefs if > 1 with refcount_release_if_not_last
2018-12-07 16:11:45 +00:00
kern_malloc.c
Remove sparc64 kernel support
2020-02-03 17:35:11 +00:00
kern_mbuf.c
uma: convert mbuf_jumbo_alloc to UMA_ZONE_CONTIG & tag others
2020-02-04 22:40:23 +00:00
kern_mib.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
kern_module.c
Use NULL for SYSINIT's last arg, which is a pointer type
2018-05-18 17:58:09 +00:00
kern_mtxpool.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
kern_mutex.c
Add KERNEL_PANICKED macro for use in place of direct panicstr tests
2020-01-12 06:07:54 +00:00
kern_ntptime.c
Clear pad bytes in the struct exported by kern.ntp_pll.gettime.
2018-11-20 20:32:10 +00:00
kern_osd.c
…
kern_physio.c
Allocate pager bufs from UMA instead of 80-ish mutex protected linked list.
2019-01-15 01:02:16 +00:00
kern_pmc.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
kern_poll.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
kern_priv.c
Check for probes enabled in priv_check_cred before evaluting the error.
2018-12-19 23:28:29 +00:00
kern_proc.c
Add sysctl kern.proc.sigfastblk for reporting sigfastblock word address.
2020-02-09 12:29:51 +00:00
kern_procctl.c
Add procctl(PROC_STACKGAP_CTL)
2019-09-03 18:56:25 +00:00
kern_prot.c
malloc: remove assumptions about MINALLOCSIZE
2020-01-14 02:14:02 +00:00
kern_racct.c
proc: eliminate the zombproc list
2019-08-28 16:18:23 +00:00
kern_rangelock.c
rangelock: add rangelock_cookie_assert
2019-09-15 02:59:53 +00:00
kern_rctl.c
…
kern_resource.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
kern_rmlock.c
rms: use newly added zpcpu routines instead of direct access where appropriate
2020-02-07 22:44:41 +00:00
kern_rwlock.c
locks: add default delay struct
2020-01-05 12:48:19 +00:00
kern_sdt.c
…
kern_sema.c
…
kern_sendfile.c
Avoid releasing object PIP in vn_sendfile() if no pages were grabbed.
2020-02-05 16:09:21 +00:00
kern_sharedpage.c
Fix the last few cases that grab without busy or valid. The grab functions must
2019-12-02 22:38:25 +00:00
kern_shutdown.c
Add "panicked" boolean which can be tested instead of panicstr
2020-01-12 06:09:10 +00:00
kern_sig.c
Add a way to manage thread signal mask using shared word, instead of syscall.
2020-02-09 11:53:12 +00:00
kern_switch.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
kern_sx.c
locks: add default delay struct
2020-01-05 12:48:19 +00:00
kern_synch.c
Provide an API for interlocked refcount sleeps.
2020-01-19 18:18:17 +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
Restore the behavior of allowing empty string in a string sysctl
2020-02-10 20:53:59 +00:00
kern_tc.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
kern_thr.c
Fix a recursion on the thread lock by acquiring it after call rtp_to_pri().
2020-02-04 02:42:54 +00:00
kern_thread.c
Add a way to manage thread signal mask using shared word, instead of syscall.
2020-02-09 11:53:12 +00:00
kern_time.c
Remove unneeded assert for curproc. Simplify.
2020-02-04 21:02:08 +00:00
kern_timeout.c
Remove the deprecated timeout(9) interface.
2019-12-13 21:03:12 +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
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
kern_uuid.c
Use sbuf_cat() in GEOM confxml generation.
2019-06-19 15:36:02 +00:00
kern_xxx.c
Normalize COMPAT_43 syscall declarations.
2018-12-04 16:48:47 +00:00
ksched.c
…
link_elf_obj.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
link_elf.c
Add SYSCTL to get KERNBASE and relocated KERNBASE
2020-02-05 11:34:10 +00:00
linker_if.m
…
Make.tags.inc
Remove a couple of harmless stray references to nandfs.
2019-06-25 16:39:25 +00:00
Makefile
sysent targets: further cleanup and deduplication
2020-01-18 20:37:45 +00:00
makesyscalls.sh
Restore the ability to set capenabled directly in syscalls.conf.
2019-09-30 20:58:29 +00:00
md4c.c
…
md5c.c
…
msi_if.m
…
p1003_1b.c
…
pic_if.m
…
posix4_mib.c
Use NULL for SYSINIT's last arg, which is a pointer type
2018-05-18 17:58:09 +00:00
sched_4bsd.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
sched_ule.c
Fix the !SMP case in sched_add() after r355779.
2020-02-03 22:49:05 +00:00
serdev_if.m
…
stack_protector.c
Revert r346292 (permit_nonrandom_stackcookies)
2019-05-13 23:37:44 +00:00
subr_acl_nfs4.c
Remove unused argument to priv_check_cred.
2018-12-11 19:32:16 +00:00
subr_acl_posix1e.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +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
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
subr_boot.c
When parsing command line stuff, treat tabs and spaces the same.
2019-04-18 22:52:12 +00:00
subr_bufring.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
subr_bus_dma.c
Add an external mbuf buffer type that holds multiple unmapped pages.
2019-06-29 00:48:33 +00:00
subr_bus.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
subr_busdma_bufalloc.c
Add malloc_domainset(9) and _domainset variants to other allocator KPIs.
2018-10-30 18:26:34 +00:00
subr_capability.c
capsicum: faster cap_rights_contains
2020-02-03 17:08:11 +00:00
subr_clock.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
subr_compressor.c
GZIO: Update to use zlib 1.2.11.
2019-08-25 07:50:44 +00:00
subr_counter.c
Fix pre-SI_SUB_CPU initialization of per-CPU counters.
2018-07-10 00:18:12 +00:00
subr_coverage.c
Extract the coverage sanitizer KPI to a new file.
2019-01-29 11:04:17 +00:00
subr_csan.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
subr_devmap.c
Print upper 32 bits in devmap table entries
2019-12-20 03:40:53 +00:00
subr_devstat.c
Use atomic for start_count in devstat_start_transaction().
2019-12-30 03:13:38 +00:00
subr_disk.c
Fix botched merge with 355066
2019-03-12 05:10:41 +00:00
subr_dummy_vdso_tc.c
…
subr_early.c
Add a file missed in r339321
2018-10-12 00:32:45 +00:00
subr_epoch.c
Change argument order of epoch_call() to more natural, first function,
2020-01-17 06:10:24 +00:00
subr_eventhandler.c
Include ktr.h in more compilation units
2019-05-21 20:38:48 +00:00
subr_fattime.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
subr_filter.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
subr_firmware.c
Factor out check for mounted root file system.
2019-11-28 08:47:36 +00:00
subr_gtaskqueue.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +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
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
subr_kdb.c
Reimplement stack capture of running threads on i386 and amd64.
2020-01-31 15:43:33 +00:00
subr_kobj.c
Prevent some kobj memory allocation failures from panicking the system.
2019-01-31 22:27:39 +00:00
subr_lock.c
locks: add default delay struct
2020-01-05 12:48:19 +00:00
subr_log.c
…
subr_mchain.c
…
subr_module.c
Have preload_delete_name() free pages backing preloaded data.
2018-07-19 20:00:28 +00:00
subr_msgbuf.c
msgbuf: Light detailing (const'ify and bool'itize)
2018-08-09 17:42:27 +00:00
subr_param.c
Remove sparc64 kernel support
2020-02-03 17:35:11 +00:00
subr_pcpu.c
schedlock 1/4
2019-12-15 21:11:15 +00:00
subr_pctrie.c
kern/subr_pctrie: Fix mismatched signedness in assertion comparison
2019-04-06 21:56:24 +00:00
subr_pidctrl.c
When pidctrl_daemon() is called multiple times within an interval, it
2018-06-07 07:48:50 +00:00
subr_power.c
Extract eventfilter declarations to sys/_eventfilter.h
2019-05-20 00:38:23 +00:00
subr_prf.c
Add KERNEL_PANICKED macro for use in place of direct panicstr tests
2020-01-12 06:07:54 +00:00
subr_prof.c
ANSIfy sys/kern
2018-06-01 13:26:45 +00:00
subr_rangeset.c
Implement rangesets.
2019-02-20 09:38:19 +00:00
subr_rman.c
add support for marking interrupt handlers as suspended
2018-12-17 17:11:00 +00:00
subr_rtc.c
Improve error messages from clock_if.m method failures.
2018-09-02 20:17:51 +00:00
subr_sbuf.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
subr_scanf.c
Add support for 'j', 't' and 'z' flags to kernel sscanf().
2019-08-16 19:46:22 +00:00
subr_sfbuf.c
…
subr_sglist.c
Add an external mbuf buffer type that holds multiple unmapped pages.
2019-06-29 00:48:33 +00:00
subr_sleepqueue.c
Reimplement stack capture of running threads on i386 and amd64.
2020-01-31 15:43:33 +00:00
subr_smp.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
subr_smr.c
Fix a race in smr_advance() that could result in unnecessary poll calls.
2020-02-06 20:51:46 +00:00
subr_stack.c
Add debugging facility EPOCH_TRACE that checks that epochs entered are
2019-09-25 18:26:31 +00:00
subr_stats.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
subr_syscall.c
Add a way to manage thread signal mask using shared word, instead of syscall.
2020-02-09 11:53:12 +00:00
subr_taskqueue.c
schedlock 1/4
2019-12-15 21:11:15 +00:00
subr_terminal.c
kernel terminal should initialize fg and bg variables before calling TUNABLE_INT_FETCH
2019-09-26 07:19:26 +00:00
subr_trap.c
Add a way to manage thread signal mask using shared word, instead of syscall.
2020-02-09 11:53:12 +00:00
subr_turnstile.c
schedlock 4/4
2019-12-15 21:26:50 +00:00
subr_uio.c
Remove sparc64 kernel support
2020-02-03 17:35:11 +00:00
subr_unit.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
subr_vmem.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
subr_witness.c
Remove sparc64 kernel support
2020-02-03 17:35:11 +00:00
sys_capability.c
capsicum: faster cap_rights_contains
2020-02-03 17:08:11 +00:00
sys_generic.c
fd: remove the seq argument from fget_unlocked
2020-02-03 22:27:55 +00:00
sys_getrandom.c
Fix a typo in r356667 comment
2020-01-12 23:52:16 +00:00
sys_pipe.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +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
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
sys_socket.c
…
syscalls.c
Regen.
2020-02-09 11:53:37 +00:00
syscalls.master
Add a way to manage thread signal mask using shared word, instead of syscall.
2020-02-09 11:53:12 +00:00
systrace_args.c
Regen.
2020-02-09 11:53:37 +00:00
sysv_ipc.c
sysv: get rid of fork/exit hooks if the code is compiled in
2019-05-04 19:05:30 +00:00
sysv_msg.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
sysv_sem.c
Correct the malloc tag used when freeing the temporary semop(2) buffer.
2020-02-04 20:00:45 +00:00
sysv_shm.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
tty_compat.c
…
tty_info.c
Reimplement stack capture of running threads on i386 and amd64.
2020-01-31 15:43:33 +00:00
tty_inq.c
tty: use __unused annotation instead to silence warnings
2018-05-19 04:48:26 +00:00
tty_outq.c
tty: use __unused annotation instead to silence warnings
2018-05-19 04:48:26 +00:00
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
Extract eventfilter declarations to sys/_eventfilter.h
2019-05-20 00:38:23 +00:00
tty_ttydisc.c
Replace ttyprintf with sbuf_printf and tty drain routine
2018-10-20 18:31:36 +00:00
tty.c
fd: remove the seq argument from fget_unlocked
2020-02-03 22:27:55 +00:00
uipc_accf.c
…
uipc_debug.c
Load balance sockets with new SO_REUSEPORT_LB option.
2018-06-06 15:45:57 +00:00
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
Make sure the VNET is properly set when calling tcp_drop() from
2020-01-21 11:43:25 +00:00
uipc_mbuf2.c
m_pulldown(): Change an if () panic() into a KASSERT().
2019-11-06 22:40:19 +00:00
uipc_mbuf.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
uipc_mbufhash.c
…
uipc_mqueue.c
Make mqueue objects work across a fork again.
2020-01-27 22:36:54 +00:00
uipc_sem.c
Remove unused argument to priv_check_cred.
2018-12-11 19:32:16 +00:00
uipc_shm.c
Don't hold the object lock while calling getpages.
2020-01-19 23:47:32 +00:00
uipc_sockbuf.c
sysctl: hide 2.x era compat node
2020-01-02 01:23:43 +00:00
uipc_socket.c
Cleanup unneeded includes that crept in with r353292.
2019-10-09 16:59:42 +00:00
uipc_syscalls.c
Only enable COMPAT_43 changes for syscalls ABI for a.out processes.
2019-08-11 19:16:07 +00:00
uipc_usrreq.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
vfs_acl.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
vfs_aio.c
vfs: drop the mostly unused flags argument from VOP_UNLOCK
2020-01-03 22:29:58 +00:00
vfs_bio.c
Fix up various vnode-related asserts which did not dump the used vnode
2020-02-03 14:25:32 +00:00
vfs_cache.c
Provide O_SEARCH
2020-02-02 16:34:57 +00:00
vfs_cluster.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
vfs_default.c
vfs: consistently use size_t for buflen around VOP_VPTOCNP
2020-02-01 20:34:43 +00:00
vfs_export.c
Ensure that directory entry padding bytes are zeroed.
2018-11-23 22:24:59 +00:00
vfs_extattr.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
vfs_hash.c
vfs: incomplete pass at converting more ints to u_long
2020-01-11 22:56:20 +00:00
vfs_init.c
Remove duplicated empty lines from kern/*.c
2020-01-30 20:05:05 +00:00
vfs_lookup.c
namei: preserve errors from fget_cap_locked
2020-02-03 18:59:07 +00:00
vfs_mount.c
vfs: remove now useless ENODEV handling from vn_fullpath consumers
2020-02-08 15:51:08 +00:00
vfs_mountroot.c
vfs: drop the mostly unused flags argument from VOP_UNLOCK
2020-01-03 22:29:58 +00:00
vfs_subr.c
vfs: fix device count leak on vrele racing with vgone
2020-02-10 22:28:54 +00:00
vfs_syscalls.c
fd: remove the seq argument from fget_unlocked
2020-02-03 22:27:55 +00:00
vfs_vnops.c
vfs: tidy up vget_finish and vn_lock
2020-02-08 15:52:20 +00:00
vnode_if.src
vfs: remove the now empty vop_unlock_post
2020-02-02 09:36:32 +00:00