Panic with recent -CURRENT kernel in EC2

[Pieper, Jeffrey E]

Hrm…

> taskqgroup_attach_cpu: setaffinity failed: 22
> taskqgroup_attach_cpu: setaffinity failed: 22

Is this a fresh snapshot? That should have been fixed in https://svnweb.freebsd.org/base?view=revision&revision=327013 . Can you please file a bug on this? This looks like an iflib issue. 

Thanks,
Jeff

On 1/12/18, 2:43 AM, "owner-freebsd-net at freebsd.org on behalf of Colin Percival" <owner-freebsd-net at freebsd.org on behalf of cperciva at tarsnap.com> wrote:

    This sounds like it may be related to r327031, which make ixgbe (and thus ixv)
    use iflib... maybe erj@ will have some ideas here?
    
    In case it helps, dhclient sets the MTU, which in the past has caused
    problems due to drivers resetting -- the fact that sys_ioctl is ending
    up in iflib_init_locked makes me wonder if this is a similar issue.  (If
    it is, there's a locking problem somewhere...)
    
    Colin Percival
    
    On 01/12/18 01:23, Bradley T. Hughes wrote:
    > (Cross-posting to -net, but I'm not subscribed there... yet)
    > 
    > I was wondering if anyone else has experienced this panic when dhclient
    tries to get an IP address after booting a recent 12.0-CURRENT kernel? Using
    the 12.0-CURRENT AMI from early November works, but with the latest snapshot
    or when using a kernel built from source I get this:
    > 
    > ixv0: <Intel(R) PRO/10GbE Virtual Function Network Driver> mem 0xf3000000-0xf3003fff,0xf3004000-0xf3007fff at device 3.0 on pci0
    > ixv0: using 2048 tx descriptors and 2048 rx descriptors
    > ixv0: msix_init qsets capped at 1
    > ixv0: pxm cpus: 2 queue msgs: 2 admincnt: 1
    > ixv0: using 1 rx queues 1 tx queues 
    > ixv0: Using MSIX interrupts with 2 vectors
    > ixv0: allocated for 1 queues
    > ixv0: allocated for 1 rx queues
    > taskqgroup_attach_cpu: setaffinity failed: 22
    > taskqgroup_attach_cpu: setaffinity failed: 22
    > ixv0: Ethernet address: 0a:ad:68:70:ea:78
    > ixv0: netmap queues/slots: TX 1/2048, RX 1/2048
    > ...
    > panic: Assertion if_getdrvflags(ifp) == i failed at /usr/src/sys/net/iflib.c:2199
    > cpuid = 3
    > time = 1515673176
    > KDB: stack backtrace:
    > db_trace_self_wrapper() at db_trace_self_wrapper+0x2b/frame 0xfffffe008a8ee600
    > vpanic() at vpanic+0x19c/frame 0xfffffe008a8ee680
    > kassert_panic() at kassert_panic+0x126/frame 0xfffffe008a8ee6f0
    > iflib_init_locked() at iflib_init_locked+0x75f/frame 0xfffffe008a8ee750
    > iflib_if_ioctl() at iflib_if_ioctl+0x744/frame 0xfffffe008a8ee7b0
    > ifioctl() at ifioctl+0x1903/frame 0xfffffe008a8ee850
    > kern_ioctl() at kern_ioctl+0x2c4/frame 0xfffffe008a8ee8b0
    > sys_ioctl() at sys_ioctl+0x15c/frame 0xfffffe008a8ee980
    > amd64_syscall() at amd64_syscall+0x79b/frame 0xfffffe008a8eeab0
    > Xfast_syscall() at Xfast_syscall+0xfb/frame 0xfffffe008a8eeab0
    > --- syscall (54, FreeBSD ELF64, sys_ioctl), rip = 0x80100a4fa, rsp = 0x7fffffffe408, rbp = 0x7fffffffe460 ---
    > 
    > Thanks in advance :)
    
    -- 
    Colin Percival
    Security Officer Emeritus, FreeBSD | The power to serve
    Founder, Tarsnap | www.tarsnap.com | Online backups for the truly paranoid
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