[Bug 222107] ifconfig down / up panics the kernel
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bugzilla-noreply at freebsd.org
Wed Sep 6 18:25:39 UTC 2017
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=222107
Bug ID: 222107
Summary: ifconfig down / up panics the kernel
Product: Base System
Version: CURRENT
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: arm
Assignee: freebsd-arm at FreeBSD.org
Reporter: heinz at project-fifo.net
when running ifconfig down em0 following by ifconfig up em0 the kernel panics:
root at thunderx:~ # ifconfig em0 up
link state changed to down
Kernel page fault with the following non-sleepable locks held:
exclusive sleep mutex em0 (iflib ctx lock) r = 0 (0xfffffd00041f2d40) locked @
/usr/src/sys/net/iflib.c:3636
stack backtrace:
#0 0xffff00000036d390 at witness_debugger+0x64
#1 0xffff00000036e6a0 at witness_warn+0x3fc
#2 0xffff0000005fcb3c at data_abort+0xe0
#3 0xffff0000005fc968 at do_el1h_sync+0xfc
#4 0xffff0000005e5874 at handle_el1h_sync+0x74
#5 0xffff00000040e9e0 at _iflib_fl_refill+0x370
#6 0xffff00000040e9e0 at _iflib_fl_refill+0x370
#7 0xffff00000040a770 at iflib_init_locked+0x3e0
#8 0xffff00000040f51c at iflib_if_ioctl+0x724
#9 0xffff0000003f6830 at ifioctl+0x1260
#10 0xffff000000372d28 at kern_ioctl+0x358
#11 0xffff000000372980 at sys_ioctl+0x158
#12 0xffff0000005fd548 at do_el0_sync+0x898
#13 0xffff0000005e59f4 at handle_el0_sync+0x74
x0: fffffd000434ce00
x1: fffffd0004155200
x2: 1
x3: 0
x4: 0
x5: 0
x6: 0
x7: ffff0006237765dc
x8: 10
x9: ffff0000005e2524
x10: 100000000
x11: ffff000000a949d8
x12: 1
x13: fffffd00041f2d40
x14: ffff000040687e80
x15: ffff00000085a078
x16: 6caa9fec
x17: 3bb1bdac
x18: ffff0006237765a0
x19: deadc0dedeadc0de
x20: fffffd0004155200
x21: fffffd000434ce00
x22: 0
x23: 1
x24: 0
x25: fffffd00bff92000
x26: 0
x27: ffff0000419ea000
x28: 0
x29: ffff000623776610
sp: ffff0006237765a0
lr: ffff00000040e9e4
elr: ffff0000005e2584
spsr: 80000345
far: deadc0dedeadc10e
esr: 96000004
panic: data abort in critical section or under mutex
cpuid = 29
time = 1504643295
KDB: stack backtrace:
db_trace_self() at db_trace_self_wrapper+0x28
pc = 0xffff0000005e3ab8 lr = 0xffff000000087228
sp = 0xffff000623775fc0 fp = 0xffff0006237761d0
db_trace_self_wrapper() at vpanic+0x184
pc = 0xffff000000087228 lr = 0xffff00000030fd84
sp = 0xffff0006237761e0 fp = 0xffff000623776260
vpanic() at panic+0x44
pc = 0xffff00000030fd84 lr = 0xffff00000030fe0c
sp = 0xffff000623776270 fp = 0xffff0006237762f0
panic() at data_abort+0x250
pc = 0xffff00000030fe0c lr = 0xffff0000005fccac
sp = 0xffff000623776300 fp = 0xffff0006237763b0
data_abort() at do_el1h_sync+0xfc
pc = 0xffff0000005fccac lr = 0xffff0000005fc968
sp = 0xffff0006237763c0 fp = 0xffff0006237763f0
do_el1h_sync() at handle_el1h_sync+0x74
pc = 0xffff0000005fc968 lr = 0xffff0000005e5874
sp = 0xffff000623776400 fp = 0xffff000623776510
handle_el1h_sync() at _iflib_fl_refill+0x370
pc = 0xffff0000005e5874 lr = 0xffff00000040e9e0
sp = 0xffff000623776520 fp = 0xffff000623776610
_iflib_fl_refill() at _iflib_fl_refill+0x370
pc = 0xffff00000040e9e0 lr = 0xffff00000040e9e0
sp = 0xffff000623776620 fp = 0xffff0006237766e0
_iflib_fl_refill() at iflib_init_locked+0x3e0
pc = 0xffff00000040e9e0 lr = 0xffff00000040a770
sp = 0xffff0006237766f0 fp = 0xffff000623776750
iflib_init_locked() at iflib_if_ioctl+0x724
pc = 0xffff00000040a770 lr = 0xffff00000040f51c
sp = 0xffff000623776760 fp = 0xffff0006237767b0
iflib_if_ioctl() at ifioctl+0x1260
pc = 0xffff00000040f51c lr = 0xffff0000003f6830
sp = 0xffff0006237767c0 fp = 0xffff000623776860
ifioctl() at kern_ioctl+0x358
pc = 0xffff0000003f6830 lr = 0xffff000000372d28
sp = 0xffff000623776870 fp = 0xffff0006237768c0
kern_ioctl() at sys_ioctl+0x158
pc = 0xffff000000372d28 lr = 0xffff000000372980
sp = 0xffff0006237768d0 fp = 0xffff0006237769a0
sys_ioctl() at do_el0_sync+0x898
pc = 0xffff000000372980 lr = 0xffff0000005fd548
sp = 0xffff0006237769b0 fp = 0xffff000623776a70
do_el0_sync() at handle_el0_sync+0x74
pc = 0xffff0000005fd548 lr = 0xffff0000005e59f4
sp = 0xffff000623776a80 fp = 0xffff000623776b90
handle_el0_sync() at 0x21ea8
pc = 0xffff0000005e59f4 lr = 0x0000000000021ea8
sp = 0xffff000623776ba0 fp = 0x0000ffffffffe320
KDB: enter: panic
[ thread pid 845 tid 100347 ]
Stopped at bounce_bus_dmamap_sync+0x60: ldr x19, [x19, #48]
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