when running ifconfig down em0 following by ifconfig up em0 the kernel panics: root@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]
^Triage: reassign to pool by assignee request.