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Chernikov Envelope-From: melifaro@ipfw.ru To: Nick Hibma Cc: "current@freebsd.org" , "Cy.Schubert@cschubert.com" In-Reply-To: References: <20191008121519.GS1263@albert.catwhisker.org> <20191009120451.GK1263@albert.catwhisker.org> <83DFEF06-AB56-4F5C-A11C-9888C85A34F5@van-laarhoven.org> <833361579628288@myt4-2943a877c094.qloud-c.yandex.net> Subject: Re: panic: Assertion in_epoch(net_epoch_preempt) failed at ... src/sys/net/if.c:3694 MIME-Version: 1.0 X-Mailer: Yamail [ http://yandex.ru ] 5.0 Date: Thu, 23 Jan 2020 09:16:24 +0000 Message-Id: <3041901579770984@myt4-4d473ee472d6.qloud-c.yandex.net> Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=utf-8 X-Rspamd-Queue-Id: 483GqL3MKNz4MgP X-Spamd-Bar: ----- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=ipfw.ru header.s=mail header.b=Xaf7sv6N; dmarc=none; spf=pass (mx1.freebsd.org: domain of melifaro@ipfw.ru designates 2a02:6b8:0:1472:2741:0:8b7:120 as permitted sender) smtp.mailfrom=melifaro@ipfw.ru X-Spamd-Result: default: False [-5.83 / 15.00]; ARC_NA(0.00)[]; TO_DN_EQ_ADDR_SOME(0.00)[]; R_DKIM_ALLOW(-0.20)[ipfw.ru:s=mail]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; R_SPF_ALLOW(-0.20)[+ip6:2a02:6b8:0:1000::/52]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[freebsd.org]; TO_DN_SOME(0.00)[]; RCVD_COUNT_THREE(0.00)[4]; TO_MATCH_ENVRCPT_SOME(0.00)[]; DKIM_TRACE(0.00)[ipfw.ru:+]; RCVD_IN_DNSWL_NONE(0.00)[0.2.1.0.7.b.8.0.0.0.0.0.1.4.7.2.2.7.4.1.0.0.0.0.8.b.6.0.2.0.a.2.list.dnswl.org : 127.0.5.0]; IP_SCORE(-3.63)[ip: (-9.66), ipnet: 2a02:6b8::/32(-4.72), asn: 13238(-3.80), country: RU(0.01)]; FORGED_SENDER(0.30)[melifaro@freebsd.org,melifaro@ipfw.ru]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_LAST(0.00)[]; ASN(0.00)[asn:13238, ipnet:2a02:6b8::/32, country:RU]; FROM_NEQ_ENVFROM(0.00)[melifaro@freebsd.org,melifaro@ipfw.ru] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 23 Jan 2020 09:16:32 -0000 21.01.2020, 20:10, "Nick Hibma" : > That (with the return added, thanks Cy) worked like a charm. Got committed in r357038. Thank you for the report! > > Thanks for the fast response. > > Nick Hibma > nick@van-laarhoven.org > > -- Open Source: We stand on the shoulders of giants. > >>  On 21 Jan 2020, at 18:38, Alexander V. Chernikov wrote: >> >>  21.01.2020, 17:25, "Nick Hibma" : >>>  When using a trivial program to read from the divert socket and post back the machine panics instantly when a packet is sent to userland and back again (incoming packet for the interface, so ifname is set). This is current from today with no changes >>> >>>  Any pointers as to how to fix this? >>  Could you please try to apply an attached patch and try again? >>>  Thanks in advance for any help. >>> >>>  Nick Hibma >>>  nick@van-laarhoven.org >>> >>>  -- Open Source: We stand on the shoulders of giants. >>> >>>  Unread portion of the kernel message buffer: >>>  panic: Assertion in_epoch(net_epoch_preempt) failed at /usr/src/sys/netinet/in.c:968 >>>  cpuid = 0 >>>  time = 1579626632 >>>  KDB: stack backtrace: >>>  db_trace_self_wrapper(3836393a,1a9000a,0,1fdc088c,bd5320,...) at db_trace_self_wrapper+0x2a/frame 0x1fdc0860 >>>  kdb_backtrace(2,1e03ebc,1fdc08e8,14683a4,20b72500,...) at kdb_backtrace+0x2e/frame 0x1fdc08c0 >>>  vpanic(1461278,1fdc0904,1fdc0904,1fdc0918,11355ac,...) at vpanic+0x11f/frame 0x1fdc08e4 >>>  panic(1461278,1512573,154b440,3c8,20b72500,...) at panic+0x14/frame 0x1fdc08f8 >>>  in_broadcast(f02000a,94df400,20b72594,1dc0ae8,2001be24,...) at in_broadcast+0x8c/frame 0x1fdc0918 >>>  div_send(2001bcc0,0,20b72500,9082e10,0,177f1a80) at div_send+0x1bd/frame 0x1fdc0958 >>>  sosend_generic(2001bcc0,9082e10,1fdc0a18,0,0,0,177f1a80) at sosend_generic+0x3c5/frame 0x1fdc09b4 >>>  sosend(2001bcc0,9082e10,1fdc0a18,0,0,...) at sosend+0x50/frame 0x1fdc09e4 >>>  kern_sendit(177f1a80,3,1fdc0aa0,0,0,0) at kern_sendit+0x1b4/frame 0x1fdc0a50 >>>  sendit(1fdc0aa0,0) at sendit+0x196/frame 0x1fdc0a88 >>>  sys_sendto(177f1a80,177f1d0c) at sys_sendto+0x50/frame 0x1fdc0ac8 >>>  syscall(1fdc0ba8,3b,3b,3b,54,...) at syscall+0x2db/frame 0x1fdc0b9c >>>  Xint0x80_syscall() at 0xffc033c9/frame 0x1fdc0b9c >>>  --- syscall (133, FreeBSD ELF32, sys_sendto), eip = 0xffc01230, esp = 0xffc07fe8, ebp = 0xffbfeb68 --- >>>  KDB: enter: panic >>> >>>  0x00fd1129 in doadump (textdump=0) at /usr/src/sys/kern/kern_shutdown.c:392 >>>  392 savectx(&dumppcb); >>>  (kgdb) quit >>>  {e}nick@fimkjecurrent:/home/nick % svn info /usr/src >>>  Path: /usr/src >>>  Working Copy Root Path: /usr/src >>>  URL: svn+ssh://repo.freebsd.org/base/head >>>  Relative URL: ^/head >>>  Repository Root: svn+ssh://repo.freebsd.org/base >>>  Repository UUID: ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f >>>  Revision: 356907 >>>  Node Kind: directory >>>  Schedule: normal >>>  Last Changed Author: jhibbits >>>  Last Changed Rev: 356904 >>>  Last Changed Date: 2020-01-20 05:01:35 +0100 (Mon, 20 Jan 2020) >>> >>>>   On 9 Oct 2019, at 14:04, David Wolfskill wrote: >>>> >>>>   On Tue, Oct 08, 2019 at 05:15:19AM -0700, David Wolfskill wrote: >>>>>   This was on my laptop (build machine, which was updated in parallel, >>>>>   but uses a different NIC, had no issues) after a src update from >>>>>   r353176 to r353298; laptop's NIC is wlan(4) (which is iwn(4), in >>>>>   this case). >>>> >>>>   After restoring the /boot/*.old set, I was able to reboot & update from >>>>   r353298 to r353336. The subsequent reboot seemed OK ... until the >>>>   keyboard & mouse were enabled (under X11; I use xdm on the laptop). >>>> >>>>   Then I got a slightly different panic: >>>> >>>>   panic: Assertion in_epoch(net_epoch_preempt) failed at /usr/src/sys/net/if.c:356 >>>> >>>>   Backtrace: >>>> >>>>   panic: Assertion in_epoch(net_epoch_preempt) failed at /usr/src/sys/net/if.c:356 >>>>   cpuid = 0 >>>>   time = 1570621553 >>>>   KDB: stack backtrace: >>>>   db_trace_self_wrapper() at 0xffffffff8049ebab = db_trace_self_wrapper+0x2b/frame 0xfffffe1072956580 >>>>   vpanic() at 0xffffffff80b978fd = vpanic+0x19d/frame 0xfffffe10729565d0 >>>>   panic() at 0xffffffff80b97693 = panic+0x43/frame 0xfffffe1072956630 >>>>   if_ref() at 0xffffffff80ca1b10 = if_ref/frame 0xfffffe1072956650 >>>>   sysctl_ifdata() at 0xffffffff80cb247d = sysctl_ifdata+0x4d/frame 0xfffffe1072956760 >>>>   sysctl_root_handler_locked() at 0xffffffff80ba714b = sysctl_root_handler_locked+0x7b/frame 0xfffffe10729567a0 >>>>   sysctl_root() at 0xffffffff80ba64dc = sysctl_root+0x20c/frame 0xfffffe1072956820 >>>>   userland_sysctl() at 0xffffffff80ba6bab = userland_sysctl+0x17b/frame 0xfffffe10729568d0 >>>>   sys___sysctl() at 0xffffffff80ba69ef = sys___sysctl+0x5f/frame 0xfffffe1072956980 >>>>   amd64_syscall() at 0xffffffff810480f4 = amd64_syscall+0x2d4/frame 0xfffffe1072956ab0 >>>>   fast_syscall_common() at 0xffffffff8101eaa0 = fast_syscall_common+0x101/frame 0xfffffe1072956ab0 >>>>   --- syscall (202, FreeBSD ELF64, sys___sysctl), rip = 0x8014d4d2a, rsp = 0x7fffffffeaa8, rbp = 0x7fffffffeae0 --- >>>>   KDB: enter: panic >>>> >>>>>   The ddb "dump" command recorded a dump, which I managed to capture; the >>>>>   information may be found at >>>>>   http://www.catwhisker.org/~david/FreeBSD/head/r353298/ >>>> >>>>   This one is at http://www.catwhisker.org/~david/FreeBSD/head/r353336 >>>> >>>>   As before, the (headless) build machine had no issues that I could see. >>>> >>>>   Peace, >>>>   david >>>>   -- >>>>   David H. Wolfskill david@catwhisker.org >>>>   I am amazed that anyone would condone what Trunp has publicly admitted he did. >>>> >>>>   See http://www.catwhisker.org/~david/publickey.gpg for my public key. >>> >>>  _______________________________________________ >>>  freebsd-current@freebsd.org mailing list >>>  https://lists.freebsd.org/mailman/listinfo/freebsd-current >>>  To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org" >>   > > _______________________________________________ > freebsd-current@freebsd.org mailing list > https://lists.freebsd.org/mailman/listinfo/freebsd-current > To unsubscribe, send any mail to "freebsd-current-unsubscribe@freebsd.org"