svn commit: r307394 - in head: share/man/man4 sys/conf sys/dev/netmap sys/modules/netmap sys/net tools/tools/netmap

[Olivier Cochard-Labbé]

​Hi,

since this commit, my system panic when using netmap pkt-gen with a Chelsio
T540-CR NIC (I didn't reproduce it with Intel NIC).

- Latest known working system: FreeBSD 12.0-CURRENT #2 r307393
- Crash since: FreeBSD 12.0-CURRENT #1 r307396

On a fresh (r309034) system, here is he behavior:

[root at SM]~# pkt-gen -i vcxl0 -f rx -w 4
133.571714 main [2546] interface is vcxl0
133.572025 main [2670] running on 1 cpus (have 8)
133.572377 extract_ip_range [462] range is 10.0.0.1:1234 to 10.0.0.1:1234
133.572393 extract_ip_range [462] range is 10.1.0.1:1234 to 10.1.0.1:1234

​Fatal trap 12: page fault while in kernel mode
cpuid = 7; apic id = 0e
fault virtual address   = 0x0
fault code              = supervisor write data, page not present
instruction pointer     = 0x20:0xffffffff80d5480e
stack pointer           = 0x28:0xfffffe0466ba61e0
frame pointer           = 0x28:0xfffffe0466ba61e0
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         = 1900 (pkt-gen)
trap number             = 12
panic: page fault
cpuid = 7
KDB: stack backtrace:
#0 0xffffffff80971167 at kdb_backtrace+0x67
#1 0xffffffff80929b72 at vpanic+0x182
#2 0xffffffff809299e3 at panic+0x43
#3 0xffffffff80d56e84 at trap_fatal+0x324
#4 0xffffffff80d57083 at trap_pfault+0x1e3
#5 0xffffffff80d56683 at trap+0x273
#6 0xffffffff80d39261 at calltrap+0x8
#7 0xffffffff8047c664 at cxgbe_netmap_reg+0x2f4
#8 0xffffffff8063d48c at netmap_hw_reg+0x2c
#9 0xffffffff8063a93b at netmap_do_regif+0x2ab
#10 0xffffffff8063b564 at netmap_ioctl+0xba4
#11 0xffffffff8063f14e at freebsd_netmap_ioctl+0x3e
#12 0xffffffff8085e47c at devfs_ioctl+0xac
#13 0xffffffff80eee78d at VOP_IOCTL_APV+0x8d
#14 0xffffffff80a08901 at vn_ioctl+0x131
#15 0xffffffff8085ecdf at devfs_ioctl_f+0x1f
#16 0xffffffff8098ed7b at kern_ioctl+0x29b
#17 0xffffffff8098ea71 at sys_ioctl+0x171
Uptime: 4m41s
Dumping 1112 out of 16325 MB:..2%..11%..21%..31%..41%..
51%..61%..71%..81%..91%
Dump complete

(kgdb) backtrace
#0  doadump (textdump=<value optimized out>) at pcpu.h:222
#1  0xffffffff809295f9 in kern_reboot (howto=260) at
/usr/local/BSDRP/BSDRPcur/FreeBSD/src/sys/kern/kern_shutdown.c:366
#2  0xffffffff80929bab in vpanic (fmt=<value optimized out>, ap=<value
optimized out>) at
/usr/local/BSDRP/BSDRPcur/FreeBSD/src/sys/kern/kern_shutdown.c:759
#3  0xffffffff809299e3 in panic (fmt=0x0) at
/usr/local/BSDRP/BSDRPcur/FreeBSD/src/sys/kern/kern_shutdown.c:690
#4  0xffffffff80d56e84 in trap_fatal (frame=0xfffffe0466ba6120, eva=0) at
/usr/local/BSDRP/BSDRPcur/FreeBSD/src/sys/amd64/amd64/trap.c:801
#5  0xffffffff80d57083 in trap_pfault (frame=0xfffffe0466ba6120,
usermode=0) at
/usr/local/BSDRP/BSDRPcur/FreeBSD/src/sys/amd64/amd64/trap.c:658
#6  0xffffffff80d56683 in trap (frame=0xfffffe0466ba6120) at
/usr/local/BSDRP/BSDRPcur/FreeBSD/src/sys/amd64/amd64/trap.c:421
#7  0xffffffff80d39261 in calltrap () at
/usr/local/BSDRP/BSDRPcur/FreeBSD/src/sys/amd64/amd64/exception.S:236
#8  0xffffffff80d5480e in bzero () at
/usr/local/BSDRP/BSDRPcur/FreeBSD/src/sys/amd64/amd64/support.S:53
#9  0xffffffff8047c664 in cxgbe_netmap_reg (na=<value optimized out>,
on=<value optimized out>) at
/usr/local/BSDRP/BSDRPcur/FreeBSD/src/sys/dev/cxgbe/t4_netmap.c:102
#10 0xffffffff8063d48c in netmap_hw_reg (na=0xfffff800055ba400, onoff=1) at
/usr/local/BSDRP/BSDRPcur/FreeBSD/src/sys/dev/netmap/netmap.c:2788
#11 0xffffffff8063a93b in netmap_do_regif (priv=<value optimized out>,
na=<value optimized out>, ringid=<value optimized out>, flags=<value
optimized out>)
    at /usr/local/BSDRP/BSDRPcur/FreeBSD/src/sys/dev/netmap/netmap.c:2050
#12 0xffffffff8063b564 in netmap_ioctl (priv=<value optimized out>,
cmd=<value optimized out>, data=0xfffffe0466ba69b0 "vcxl0",
td=0xfffff8001509a500)
    at /usr/local/BSDRP/BSDRPcur/FreeBSD/src/sys/dev/netmap/netmap.c:2257
#13 0xffffffff8063f14e in freebsd_netmap_ioctl (dev=<value optimized out>,
cmd=3225184658, data=0xfffffe0466ba69b0 "vcxl0", ffla=<value optimized out>,
    td=0xfffff8001509a500) at
/usr/local/BSDRP/BSDRPcur/FreeBSD/src/sys/dev/netmap/netmap_freebsd.c:1389
#14 0xffffffff8085e47c in devfs_ioctl (ap=<value optimized out>) at
/usr/local/BSDRP/BSDRPcur/FreeBSD/src/sys/fs/devfs/devfs_vnops.c:831
#15 0xffffffff80eee78d in VOP_IOCTL_APV (vop=<value optimized out>,
a=<value optimized out>) at vnode_if.c:1067
#16 0xffffffff80a08901 in vn_ioctl (fp=0xfffff80015191f00, com=<value
optimized out>, data=0xfffffe0466ba69b0, active_cred=0xfffff8019928bd00,
td=0x1) at vnode_if.h:448
#17 0xffffffff8085ecdf in devfs_ioctl_f (fp=0x0, com=131072, data=0x0,
cred=0x4000, td=0xfffff8001509a500)
    at /usr/local/BSDRP/BSDRPcur/FreeBSD/src/sys/fs/devfs/devfs_vnops.c:789
#18 0xffffffff8098ed7b in kern_ioctl (td=<value optimized out>, fd=<value
optimized out>, com=3225184658, data=0xfffffe0466ba69b0 "vcxl0") at
file.h:327
#19 0xffffffff8098ea71 in sys_ioctl (td=0xfffff8001509a500,
uap=0xfffffe0466ba6b10) at
/usr/local/BSDRP/BSDRPcur/FreeBSD/src/sys/kern/sys_generic.c:746
#20 0xffffffff80d57825 in amd64_syscall (td=<value optimized out>,
traced=0) at subr_syscall.c:135
#21 0xffffffff80d3954b in Xfast_syscall () at
/usr/local/BSDRP/BSDRPcur/FreeBSD/src/sys/amd64/amd64/exception.S:396
#22 0x000000080100e5ca in ?? ()


​Regards,

Olivier​