Date: Thu, 12 Oct 2017 23:45:35 -0700 From: Adrian Chadd <adrian@freebsd.org> To: Cy Schubert <Cy.Schubert@komquats.com> Cc: "src-committers@freebsd.org" <src-committers@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, "svn-src-head@freebsd.org" <svn-src-head@freebsd.org> Subject: Re: svn commit: r324570 - head/sys/net80211 Message-ID: <CAJ-Vmo=XftK9ctK8RD3MrahvZ2KWF4gTRVTWdHqoP-4V9sqj5A@mail.gmail.com> In-Reply-To: <201710130153.v9D1rahI002918@slippy.cwsent.com> References: <adrian@FreeBSD.org> <201710122156.v9CLuwH4017132@repo.freebsd.org> <201710130153.v9D1rahI002918@slippy.cwsent.com>
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god damnit. lemme go look at what's going on. thanks for the heads up! -a On 12 October 2017 at 18:53, Cy Schubert <Cy.Schubert@komquats.com> wrote: > In message <201710122156.v9CLuwH4017132@repo.freebsd.org>, Adrian Chadd > writes: >> Author: adrian >> Date: Thu Oct 12 21:56:58 2017 >> New Revision: 324570 >> URL: https://svnweb.freebsd.org/changeset/base/324570 >> >> Log: >> [net80211] begin handling multiple hardware decap'ed A-MSDU in the RX path. >> >> The duplicate detection code currently expects A-MSDU frames to be encaped >> - >> they're decap'ed /after/ duplicate detection. >> >> However for ath10k (and iwm hardware later on) the firmware supports >> doing A-MSDU decap in hardware - which shows up as multiple frames with >> the same sequence number and IV. >> >> This is the first part of decap handling - if we see a stretch of A-MSDU >> frames from the driver with the MORE bit set, then don't treat them >> as duplicates. >> >> This isn't 100% complete as crypto sequence number handling and "A-MSDU in >> A-MPDU" needs handling, but it's a start. >> >> This should be a glorified no-op for everyone. Please tell me if it isn't. >> > > Hi Adrian, > > This is causing iwn in my laptop a bit of gas. > > wlan0: Ethernet address: 20:6a:8a:72:03:17 > <118>Created wlan(4) interfaces: wlan0. > <118>Created clone interfaces: lagg0. > <5>bge0: link state changed to DOWN > iwn0: iwn_read_firmware: ucode rev=0x12a80601 > <118>Starting wpa_supplicant. > <5>lagg0: link state changed to DOWN > iwn0: iwn_read_firmware: ucode rev=0x12a80601 > <118>Starting dhclient. > <118>lagg0: no link ... > > > Fatal trap 12: page fault while in kernel mode > cpuid = 0; apic id = 00 > fault virtual address = 0x4 > fault code = supervisor read data, page not present > instruction pointer = 0x20:0xffffffff8155cd59 > stack pointer = 0x28:0xfffffe01491e4790 > frame pointer = 0x28:0xfffffe01491e4830 > code segment = base 0x0, limit 0xfffff, type 0x1b > = DPL 0, pres 1, long 1, def32 0, gran 1 > processor eflags = interrupt enabled, resume, IOPL = 0 > current process = 12 (irq265: iwn0) > trap number = 12 > panic: page fault > cpuid = 0 > time = 1507858438 > KDB: stack backtrace: > db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame > 0xfffffe01491e4370 > vpanic() at vpanic+0x19c/frame 0xfffffe01491e43f0 > panic() at panic+0x43/frame 0xfffffe01491e4450 > trap_fatal() at trap_fatal+0x34d/frame 0xfffffe01491e44a0 > trap_pfault() at trap_pfault+0x49/frame 0xfffffe01491e4500 > trap() at trap+0x2a9/frame 0xfffffe01491e46c0 > calltrap() at calltrap+0x8/frame 0xfffffe01491e46c0 > --- trap 0xc, rip = 0xffffffff8155cd59, rsp = 0xfffffe01491e4790, rbp = > 0xfffffe01491e4830 --- > sta_input() at sta_input+0xb89/frame 0xfffffe01491e4830 > iwn_notif_intr() at iwn_notif_intr+0x15f7/frame 0xfffffe01491e4970 > iwn_intr() at iwn_intr+0x5a0/frame 0xfffffe01491e49e0 > intr_event_execute_handlers() at intr_event_execute_handlers+0xec/frame > 0xfffffe01491e4a20 > ithread_loop() at ithread_loop+0xd6/frame 0xfffffe01491e4a70 > fork_exit() at fork_exit+0x85/frame 0xfffffe01491e4ab0 > fork_trampoline() at fork_trampoline+0xe/frame 0xfffffe01491e4ab0 > --- trap 0, rip = 0, rsp = 0, rbp = 0 --- > Uptime: 29s > Dumping 704 out of 7978 MB:..3%..12%..21%..32%..41%..53%..62%..71%..82%..91% > > > Loaded symbols for /boot/kernel/nullfs.ko > #0 doadump (textdump=1) at pcpu.h:232 > 232 pcpu.h: No such file or directory. > in pcpu.h > (kgdb) bt > #0 doadump (textdump=1) at pcpu.h:232 > #1 0xffffffff80583eb6 in kern_reboot (howto=260) at > /opt/src/svn-current/sys/kern/kern_shutdown.c:386 > #2 0xffffffff805843a6 in vpanic (fmt=<value optimized out>, ap=<value > optimized out>) at /opt/src/svn-current/sys/kern/kern_shutdown.c:779 > #3 0xffffffff805841c3 in panic (fmt=<value optimized out>) at > /opt/src/svn-current/sys/kern/kern_shutdown.c:710 > #4 0xffffffff80886a8d in trap_fatal (frame=0xfffffe01491e46d0, eva=4) at > /opt/src/svn-current/sys/amd64/amd64/trap.c:799 > #5 0xffffffff80886ae9 in trap_pfault (frame=0xfffffe01491e46d0, > usermode=0) at pcpu.h:232 > #6 0xffffffff80886339 in trap (frame=0xfffffe01491e46d0) at > /opt/src/svn-current/sys/amd64/amd64/trap.c:420 > #7 0xffffffff8086acf1 in calltrap () at /opt/src/svn-current/sys/amd64/amd6 > 4/exception.S:237 > #8 0xffffffff8155cd59 in sta_input (ni=0xfffffe0012651000, > m=0xfffff80004040e00, rxs=0x0, rssi=63, nf=-95) at ieee80211_input.h:280 > #9 0xffffffff81513987 in iwn_notif_intr () from /boot/kernel/if_iwn.ko > #10 0xffffffff8150a270 in iwn_intr () from /boot/kernel/if_iwn.ko > #11 0xffffffff80548dcc in intr_event_execute_handlers (p=<value optimized > out>, ie=0xfffff80002b06800) at /opt/src/svn-current/sys/kern/kern_intr.c:13 > 36 > #12 0xffffffff80549496 in ithread_loop (arg=0xfffff80002b50c20) at > /opt/src/svn-current/sys/kern/kern_intr.c:1349 > #13 0xffffffff80546135 in fork_exit (callout=0xffffffff805493c0 > <ithread_loop>, arg=0xfffff80002b50c20, frame=0xfffffe01491e4ac0) at > /opt/src/svn-current/sys/kern/kern_fork.c:1044 > #14 0xffffffff8086b2de in fork_trampoline () at /opt/src/svn-current/sys/amd > 64/amd64/exception.S:651 > #15 0x0000000000000000 in ?? () > Current language: auto; currently minimal > > > -- > Cheers, > Cy Schubert <Cy.Schubert@cschubert.com> > FreeBSD UNIX: <cy@FreeBSD.org> Web: http://www.FreeBSD.org > > The need of the many outweighs the greed of the few. > > > > >
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