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freebsd-dev/sys/netinet
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Mark Johnston 5fd1a67e88 inpcb: Release the inpcb cred reference before freeing the structure 
Now that the inp_cred pointer is accessed only while the inpcb lock is
held, we can avoid deferring a crfree() call when freeing an inpcb.

This fixes a problem introduced when inpcb hash tables started being
synchronized with SMR: the credential reference previously could not be
released until all lockless readers have drained, and there is no
mechanism to explicitly purge cached, freed UMA items.  Thus, ucred
references could linger indefinitely, and since ucreds hold a jail
reference, the jail would linger indefinitely as well.  This manifests
as jails getting stuck in the DYING state.

Discussed with:	glebius
Tested by:	glebius
Sponsored by:	Klara, Inc.
Sponsored by:	Modirum MDPay
Differential Revision:	https://reviews.freebsd.org/D38573
2023-04-20 12:13:06 -04:00
..
cc Move access to tcp's t_logstate into inline functions and provide new tracepoint and bbpoint capabilities. 2023-03-16 11:43:16 -04:00
khelp tcp: provide macros to access inpcb and socket from a tcpcb 2022-11-08 10:24:40 -08:00
libalias libalias: Mark set but unused variables as unused. 2023-04-10 10:35:29 -07:00
netdump IfAPI: Explicitly include <net/if_private.h> in netstack 2023-01-31 15:02:16 -05:00
tcp_stacks tcp: rack the request level logging is a bit too noisy when doing point logging. 2023-04-19 14:02:12 -04:00
accf_data.c
accf_dns.c
accf_http.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
dccp.h
icmp6.h pf: apply the network stack's ICMP rate limiting to ICMP errors sent by pf 2022-10-14 10:36:16 +02:00
icmp_var.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
if_ether.c IfAPI: Explicitly include <net/if_private.h> in netstack 2023-01-31 15:02:16 -05:00
if_ether.h
igmp_var.h igmp: use callout(9) directly instead of pr_slowtimo, pr_fasttimo 2022-08-17 11:50:31 -07:00
igmp.c IfAPI: Explicitly include <net/if_private.h> in netstack 2023-01-31 15:02:16 -05:00
igmp.h
in_cksum.c netinet: Implement in_cksum_skip() using m_apply() 2021-11-24 13:31:16 -05:00
in_debug.c Use network epoch to protect local IPv4 addresses hash. 2021-10-22 14:40:53 -07:00
in_fib_algo.c Fix IPv4 fib bsearch4() lookup array construction. 2021-01-17 20:32:26 +00:00
in_fib_dxr.c fib_algo: shift / mask by constants in dxr_lookup() 2022-01-17 00:13:47 +01:00
in_fib.c IfAPI: Explicitly include <net/if_private.h> in netstack 2023-01-31 15:02:16 -05:00
in_fib.h Refactor fib4/fib6 functions. 2020-11-29 13:41:49 +00:00
in_gif.c IfAPI: Explicitly include <net/if_private.h> in netstack 2023-01-31 15:02:16 -05:00
in_jail.c jail: convert several functions from int to bool 2023-03-14 21:05:33 -06:00
in_kdtrace.c Fix dtrace SDT probe tcp:::debug-input 2021-12-20 17:15:43 -09:00
in_kdtrace.h tcp: retire TCPDEBUG 2022-12-14 09:54:06 -08:00
in_mcast.c in_mcat.c: change multicast not member condition 2023-03-03 22:25:17 -07:00
in_pcb_var.h inpcb: Avoid inp_cred dereferences in SMR-protected lookup 2023-04-20 12:13:06 -04:00
in_pcb.c inpcb: Release the inpcb cred reference before freeing the structure 2023-04-20 12:13:06 -04:00
in_pcb.h inpcb: Avoid inp_cred dereferences in SMR-protected lookup 2023-04-20 12:13:06 -04:00
in_prot.c
in_proto.c netinet*: add back necessary headers 2022-10-26 08:16:44 -07:00
in_rmx.c IfAPI: Explicitly include <net/if_private.h> in netstack 2023-01-31 15:02:16 -05:00
in_rss.c in_rss: fix set but not used warning 2022-05-07 18:17:33 +02:00
in_rss.h Implement flowid calculation for outbound connections to balance 2020-10-18 17:15:47 +00:00
in_systm.h
in_var.h inet: Simplify if_multiaddrs iteration. 2022-10-08 13:10:07 -04:00
in.c IfAPI: Explicitly include <net/if_private.h> in netstack 2023-01-31 15:02:16 -05:00
in.h netinet: Remove the IP(V6)_RSS_LISTEN_BUCKET socket option 2023-02-28 15:57:21 -05:00
ip6.h tcp: use IPV6_FLOWLABEL_LEN 2023-04-11 18:53:51 +02:00
ip_carp_nl.h carp: allow commands to use interface name rather than index 2023-03-31 11:29:58 +02:00
ip_carp.c carp: allow commands to use interface name rather than index 2023-03-31 11:29:58 +02:00
ip_carp.h protosw: separate pr_input and pr_ctlinput out of protosw 2022-08-17 11:50:31 -07:00
ip_divert.c IfAPI: Explicitly include <net/if_private.h> in netstack 2023-01-31 15:02:16 -05:00
ip_divert.h divert(4): provide statistics 2022-08-30 15:09:21 -07:00
ip_dummynet.h ipfw: use unsigned int for dummynet bandwidth 2021-08-19 10:48:53 +02:00
ip_ecn.c
ip_ecn.h
ip_encap.c
ip_encap.h
ip_fastfwd.c IfAPI: Explicitly include <net/if_private.h> in netstack 2023-01-31 15:02:16 -05:00
ip_fw.h ipfw: add support radix tables and table lookup for MAC addresses 2022-06-04 19:12:29 +03:00
ip_gre.c IfAPI: Explicitly include <net/if_private.h> in netstack 2023-01-31 15:02:16 -05:00
ip_icmp.c netinet: Disallow unspecified addresses in ICMP-embedded packets 2023-03-13 10:45:56 -04:00
ip_icmp.h netinet*: remove PRC_ constants and streamline ICMP processing 2022-10-03 20:53:04 -07:00
ip_id.c
ip_input.c netinet: Tighten checks for unspecified source addresses 2023-03-06 15:06:00 -05:00
ip_mroute.c mroute: partially sanitize the file 2023-02-23 13:35:44 +00:00
ip_mroute.h IPv4 multicast: fix netstat -g 2022-03-22 07:38:01 -05:00
ip_options.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
ip_options.h
ip_output.c netinet: Remove the IP(V6)_RSS_LISTEN_BUCKET socket option 2023-02-28 15:57:21 -05:00
ip_reass.c IfAPI: Explicitly include <net/if_private.h> in netstack 2023-01-31 15:02:16 -05:00
ip_var.h ipfw: garbage collect ip_fw_chk_ptr 2023-03-03 10:30:15 -08:00
ip.h ip_reass: retire ipreass_slowtimo() in favor of per-slot callout 2022-09-08 13:49:58 -07:00
pim_var.h
pim.h
raw_ip.c inpcb: Split PCB hash tables 2023-04-20 12:13:06 -04:00
sctp_asconf.c sctp: improve consistency 2022-05-14 06:28:19 +02:00
sctp_asconf.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_auth.c net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_auth.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_bsd_addr.c sctp: Remove unused variable. 2022-04-12 14:58:59 -07:00
sctp_bsd_addr.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_cc_functions.c sctp: plug set-but-not-used vars 2022-04-19 12:45:57 +00:00
sctp_constants.h sctp: initial implementation of draft-tuexen-tsvwg-sctp-zero-checksum 2023-03-10 01:45:46 +01:00
sctp_crc32.c sctp: fix a signed/unsigned mismatch. 2022-02-17 22:45:57 +01:00
sctp_crc32.h sctp: fix a signed/unsigned mismatch. 2022-02-17 22:45:57 +01:00
sctp_header.h sctp: improve negotiation of zero checksum feature 2023-03-15 22:29:52 +01:00
sctp_indata.c sctp: tweak panic message 2022-08-03 17:28:15 +02:00
sctp_indata.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_input.c sctp: enforce Kahn's rule during the handshake 2023-03-16 17:40:40 +01:00
sctp_input.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_kdtrace.c
sctp_kdtrace.h
sctp_lock_bsd.h sctp: get rid of stcb send lock 2022-03-29 01:50:17 +02:00
sctp_module.c protosw: refactor protosw and domain static declaration and load 2022-08-17 11:50:32 -07:00
sctp_os_bsd.h IfAPI: Explicitly include <net/if_private.h> in netstack 2023-01-31 15:02:16 -05:00
sctp_os.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_output.c sctp: fix typo in assignment 2023-03-18 23:58:50 +01:00
sctp_output.h sctp: cleanup the SCTP_MAXSEG socket option. 2021-12-27 23:40:31 +01:00
sctp_pcb.c sctp: initial implementation of draft-tuexen-tsvwg-sctp-zero-checksum 2023-03-10 01:45:46 +01:00
sctp_pcb.h sctp: initial implementation of draft-tuexen-tsvwg-sctp-zero-checksum 2023-03-10 01:45:46 +01:00
sctp_peeloff.c sctp: Remove an unused sctp_inpcb field 2021-09-07 11:19:29 -04:00
sctp_peeloff.h
sctp_ss_functions.c sctp: fix typos 2022-03-29 21:09:51 +02:00
sctp_structs.h sctp: initial implementation of draft-tuexen-tsvwg-sctp-zero-checksum 2023-03-10 01:45:46 +01:00
sctp_syscalls.c sctp: ansify 2023-02-13 18:17:10 +00:00
sctp_sysctl.c sctp: initial implementation of draft-tuexen-tsvwg-sctp-zero-checksum 2023-03-10 01:45:46 +01:00
sctp_sysctl.h sctp: initial implementation of draft-tuexen-tsvwg-sctp-zero-checksum 2023-03-10 01:45:46 +01:00
sctp_timer.c Fix unused variable warning in sctp_timer.c 2022-07-25 22:08:28 +02:00
sctp_timer.h net: clean up empty lines in .c and .h files 2020-09-01 21:19:14 +00:00
sctp_uio.h sctp: initial implementation of draft-tuexen-tsvwg-sctp-zero-checksum 2023-03-10 01:45:46 +01:00
sctp_usrreq.c sctp: allow disabling of SCTP_ACCEPT_ZERO_CHECKSUM socket option 2023-03-15 22:55:23 +01:00
sctp_var.h sctp: minor changes due to upstreaming of Glebs recent changes 2022-11-06 23:06:40 +01:00
sctp.h sctp: initial implementation of draft-tuexen-tsvwg-sctp-zero-checksum 2023-03-10 01:45:46 +01:00
sctputil.c sctp: initial implementation of draft-tuexen-tsvwg-sctp-zero-checksum 2023-03-10 01:45:46 +01:00
sctputil.h sctp: more sb_cc related cleanups 2022-05-23 16:09:23 +02:00
siftr.c pfil: add pfil_mem_{in,out}() and retire pfil_run_hooks() 2023-02-14 10:02:49 -08:00
tcp_accounting.h Move access to tcp's t_logstate into inline functions and provide new tracepoint and bbpoint capabilities. 2023-03-16 11:43:16 -04:00
tcp_ecn.c tcp: retire TCPDEBUG 2022-12-14 09:54:06 -08:00
tcp_ecn.h tcp: add conservative d.cep accounting algorithm 2022-11-06 12:05:22 +01:00
tcp_fastopen.c tcp: provide macros to access inpcb and socket from a tcpcb 2022-11-08 10:24:40 -08:00
tcp_fastopen.h Use stub inline functions for no-op versions of tcp_fastopen*(). 2022-04-08 17:25:13 -07:00
tcp_fsm.h tcp: remove a 4.4BSD relic 2022-12-13 20:21:45 -08:00
tcp_hostcache.c tcp(4): Fix a typo in a sysctl description 2021-11-30 07:17:30 +01:00
tcp_hpts.c tcp: Inconsistent use of hpts_calling flag 2023-04-17 17:10:26 -04:00
tcp_hpts.h tcp_hpts: plug a compiler warn 2023-04-05 14:32:13 +00:00
tcp_input.c tcp: reduce argument list to functions that pass a segment 2023-04-07 12:18:06 -07:00
tcp_log_buf.c We have a TCP_LOG_CONNEND log that should come out at the very last log of every connection. This 2023-04-19 12:54:25 -04:00
tcp_log_buf.h tcp: misc cleanup of options for rack as well as socket option logging. 2023-04-07 10:15:29 -04:00
tcp_lro.c tcp_hpts: use queue(9) STAILQ for the input queue 2023-04-17 09:07:23 -07:00
tcp_lro.h tcp_lro: Fix for undefined behaviour. 2023-01-13 11:18:19 +01:00
tcp_offload.c IfAPI: Explicitly include <net/if_private.h> in netstack 2023-01-31 15:02:16 -05:00
tcp_offload.h Path MTU discovery hooks for offloaded TCP connections. 2021-04-21 13:00:16 -07:00
tcp_output.c tcp: use IPV6_FLOWLABEL_LEN 2023-04-11 18:53:51 +02:00
tcp_pcap.c tcp: embed inpcb into tcpcb 2022-12-07 09:00:48 -08:00
tcp_pcap.h
tcp_ratelimit.c Move access to tcp's t_logstate into inline functions and provide new tracepoint and bbpoint capabilities. 2023-03-16 11:43:16 -04:00
tcp_ratelimit.h rack and bbr not loading if TCP_RATELIMIT is not configured. 2023-01-05 11:59:52 -05:00
tcp_reass.c tcp: retire TCPDEBUG 2022-12-14 09:54:06 -08:00
tcp_sack.c tcp: send SACK rescue retransmission also mid-stream 2023-03-28 04:47:01 +02:00
tcp_seq.h tcp: Correctly compute the retransmit length for all 64-bit platforms. 2022-06-03 10:49:17 +02:00
tcp_stats.c tcp: add missing void keyword to tcp_stats_init 2023-02-13 18:38:04 +00:00
tcp_subr.c We have a TCP_LOG_CONNEND log that should come out at the very last log of every connection. This 2023-04-19 12:54:25 -04:00
tcp_syncache.c tcp: bbr.c is non-capable of doing ECN and sets an INP flag to fend off ECN however our syncache is not aware of that flag. 2023-04-18 12:21:56 -04:00
tcp_syncache.h tcp: Add/update AccECN related statistics and numbers 2022-02-10 00:21:31 +01:00
tcp_timer.c Move access to tcp's t_logstate into inline functions and provide new tracepoint and bbpoint capabilities. 2023-03-16 11:43:16 -04:00
tcp_timer.h tcp: rearrange enum and remove unused variable 2023-02-21 18:26:49 +01:00
tcp_timewait.c tcp: retire TCPDEBUG 2022-12-14 09:54:06 -08:00
tcp_usrreq.c tcp: pass tcpcb in the tfb_tcp_ctloutput() method instead of inpcb 2023-04-07 12:18:10 -07:00
tcp_var.h tcp_hpts: use queue(9) STAILQ for the input queue 2023-04-17 09:07:23 -07:00
tcp.h tcp: misc cleanup of options for rack as well as socket option logging. 2023-04-07 10:15:29 -04:00
tcpip.h
toecore.c IfAPI: Explicitly include <net/if_private.h> in netstack 2023-01-31 15:02:16 -05:00
toecore.h Path MTU discovery hooks for offloaded TCP connections. 2021-04-21 13:00:16 -07:00
udp_usrreq.c inpcb: use family specific sockaddr argument for bind functions 2023-02-15 10:30:16 -08:00
udp_var.h udp: add protocol method declarations to udp_var.h 2022-12-07 11:51:49 -08:00
udp.h headers: make a few more headers self-contained 2022-01-03 10:12:30 +01:00
udplite.h