Hi Alexey, Alexey Brodkin wrote, > Even though by default for ARC uClibc gets compiled with > disabled long-calls user may provide UCLIBC_EXTRA_CFLAGS > with "-mlong-calls". With this option uClibc will be > successfully compiled but later it will fail in runtime > because dynamic loader cannot deal with relocations > at least very early on its start. > > In particular it will be seen as call to non-relocated > symbol _dl_parse_dynamic_info() which ends-up as a segfault > like this: > ------------------------>8-------------------- > potentially unexpected fatal signal 11. > Path: /bin/test > CPU: 0 PID: 63 Comm: test Not tainted 4.5.2 #7 > task: 9f13f180 ti: 9f166000 task.ti: 9f166000 > > [ECR ]: 0x00040000 => Insn could not be fetched > [EFA ]: 0x0000283c > [BLINK ]: 0x2000407c > [ERET ]: 0x283c > @No matching VMA found > [STAT32]: 0x8008009e : IE U > BTA: 0x0000283c SP: 0x5fef5ccc FP: 0x00000000 > LPS: 0x20004080 LPE: 0x20004064 LPC: 0x00000000 > r00: 0x20006684 r01: 0x5fef5db0 r02: 0x00000000 > r03: 0x20000000 r04: 0x80808080 r05: 0x2f2f2f2f > r06: 0x41464d00 r07: 0x00000080 r08: 0x000000dd > r09: 0x00000000 r10: 0x00000073 r11: 0x80808080 > r12: 0x2000407c r13: 0x20000000 r14: 0x5fef5e74 > r15: 0x000ceb3c r16: 0x5fef5e7c r17: 0x5fef5d44 > r18: 0x000ceb0c r19: 0xffffffff r20: 0x000ceb1c > r21: 0x00000000 r22: 0x00000000 r23: 0x000d08a5 > r24: 0x00000000 r25: 0x80808080 > > Segmentation fault > ------------------------>8-------------------- > > Solution to this issue is simple we make sure dynamic > loader never gets compiled with "-mlong-calls" by forcing > "-mno-long-calls" on it. > > Signed-off-by: Alexey Brodkin <abrodkin at synopsys.com> > Cc: Vineet Gupta <vgupta at synopsys.com> > Cc: Anton Kolesov <akolesov at synopsys.com> > Cc: linux-snps-arc at lists.infradead.org applied and pushed, Thanks Waldemar
